WO2024251889A1 - System und verfahren zur vereinzelung von stofflagen - Google Patents
System und verfahren zur vereinzelung von stofflagen Download PDFInfo
- Publication number
- WO2024251889A1 WO2024251889A1 PCT/EP2024/065633 EP2024065633W WO2024251889A1 WO 2024251889 A1 WO2024251889 A1 WO 2024251889A1 EP 2024065633 W EP2024065633 W EP 2024065633W WO 2024251889 A1 WO2024251889 A1 WO 2024251889A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- effector
- fabric layer
- fabric
- handling mechanism
- handling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J9/00—Program-controlled manipulators
- B25J9/16—Program controls
- B25J9/1612—Program controls characterised by the hand, wrist, grip control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J11/00—Manipulators not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J15/00—Gripping heads and other end effectors
- B25J15/0071—Gripping heads and other end effectors with needles engaging into objects to be gripped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J15/00—Gripping heads and other end effectors
- B25J15/06—Gripping heads and other end effectors with vacuum or magnetic holding means
- B25J15/0616—Gripping heads and other end effectors with vacuum or magnetic holding means with vacuum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J9/00—Program-controlled manipulators
- B25J9/16—Program controls
- B25J9/1679—Program controls characterised by the tasks executed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/08—Separating articles from piles using pneumatic force
- B65H3/0808—Suction grippers
- B65H3/0816—Suction grippers separating from the top of pile
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/08—Separating articles from piles using pneumatic force
- B65H3/14—Air blasts producing partial vacuum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/18—Separating articles from piles using electrostatic force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/22—Separating articles from piles by needles or the like engaging the articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J9/00—Program-controlled manipulators
- B25J9/16—Program controls
- B25J9/1694—Program controls characterised by use of sensors other than normal servo-feedback from position, speed or acceleration sensors, perception control, multi-sensor controlled systems, sensor fusion
- B25J9/1697—Vision controlled systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2555/00—Actuating means
- B65H2555/30—Multi-axis
Definitions
- the present invention relates to a system and a method for handling and processing fabric layers with a handling mechanism and a monitoring device for monitoring the separation of a fabric layer from a fabric layer stack.
- a textile processing system which is designed for automated sewing, for example, requires a handling mechanism to separate the fabric from a stack and, after manipulation, to feed it to a sewing system (or sewing machine) in sufficient proximity.
- robots with an effector are used, on which appropriate gripping mechanisms are arranged to grip the piece of fabric.
- pieces of fabric that make up a piece of clothing have different sizes and can have different properties both among themselves and within the same piece.
- a system for handling and processing fabric layers has a handling robot with an effector for handling fabric layers.
- the effector has a handling mechanism which is designed to pick up and place at least one fabric layer, wherein the handling mechanism has an effector contour.
- the fabric layer can be fastened within the effector contour, wherein the effector contour is smaller than an outer contour of the fabric layer. In other words, the fabric layer is larger than the effector contour and protrudes beyond the effector contour.
- the handling mechanism is configured to individually separate and pick up at least one fabric layer from a fabric layer stack, wherein the handling mechanism is further configured to lay at least one separated fabric layer flat on a work surface of a work table and to stretch the fabric layer within the effector contour without creases.
- the system further comprises a monitoring device which is configured to monitor the separation of the at least one material layer from the material layer stack.
- the monitoring device can monitor the process of separating the at least one material layer and thus ensure whether, for example, the predetermined number, i.e. one or a specific number of material layers, are handled.
- a further aspect of the present invention describes a method for handling and processing fabric layers.
- the method comprises picking up and placing down at least one fabric layer by means of a handling mechanism of an effector of a handling robot, wherein the handling mechanism has an effector contour and wherein the fabric layer can be fastened within the effector contour.
- the effector contour is smaller than an outer contour of the fabric layer, wherein the handling mechanism is configured to individually separate and pick up at least one fabric layer from a fabric layer stack and to place at least one separated fabric layer flat on a work surface of a work table.
- the fabric layer is stretched within the effector contour without wrinkles.
- the method also includes monitoring of the Separation of at least one fabric layer from the fabric layer stack by means of a monitoring device.
- the handling robot has the effector, to which the corresponding handling mechanism is attached, in particular in an exchangeable manner.
- the handling robot is attached to the floor or work table with a stationary robot base in order to introduce corresponding forces into the corresponding system.
- the handling robot can also be configured in such a way that the robot base is designed to be movable along the floor.
- a robot arm can be arranged between the effector and the robot base, which has, for example, one or more joints in order to control the effector into a desired position.
- the handling robot is a programmable multi-purpose handling device for moving material, workpieces, tools or special equipment.
- the handling robot is designed to handle or manipulate the material layers and to move and position them accordingly.
- the handling robot enables a machine-controlled position change option in more than one axis and/or along a translational position change of the material layers.
- fabric layer refers to the possible textiles or textile parts of a textile product, in particular a piece of clothing.
- the term fabric layer includes different types of knitted fabrics, in particular woven fabrics and fleeces.
- the left/left side of a fabric layer is understood to be the inside (ie the underside of the fabric, the inside of the fabric or the 'not pretty side' of a fabric layer. In a piece of clothing, the left side corresponds to the invisible side of the fabric layer.
- the right/right side of a fabric layer is used to refer to the 'pretty side' of a fabric or fabric layer (eg the Fabric top side, visible side, fabric outside side). In a garment, the right side corresponds to the visible side of the fabric or fabric layer (e.g.
- a fabric part can consist of several fabric layers.
- a fabric part (such as a garment) can be folded over several times and lie on a work table as a fabric layer stack with several fabric layers.
- the fabric layers can each represent separate fabric parts that form a fabric layer stack on top of each other.
- the controllable handling mechanism is arranged on the effector.
- the handling mechanism transports one or more layers of material.
- the layers of material can be laid loosely on top of one another and gripped as a stack (for example by means of negative pressure or by means of a mechanical gripper of the handling mechanism), or the layers of material can be fastened together, for example temporarily.
- the handling mechanism can transport the layers of material to a joining unit.
- the effector or the handling mechanism can adapt to the contour of the layers of material, for example by adjusting the fixing points of the handling mechanism to which the layer of material is fixed.
- the fixing elements described below can be arranged for this purpose, in which the individual fixing points are formed.
- the handling mechanism covers in particular the outline-relevant points of a contour of the layer of material, with one edge of the layers of material preferably remaining free as a joining area and not being covered by the handling mechanism.
- the area of the layers of material that is covered by the effector or the handling mechanism for fixing the layers of material is referred to below as the effector contour.
- the effector thus forms an end part of the handling robot with, for example, grippers as handling mechanics, which can move a layer of material (for example a flat unprocessed layer of material or a whole garment as a fabric layer) or a fabric layer stack consisting of fabric layers attached with a fixing mechanism.
- grippers as handling mechanics, which can move a layer of material (for example a flat unprocessed layer of material or a whole garment as a fabric layer) or a fabric layer stack consisting of fabric layers attached with a fixing mechanism.
- the joining unit is configured to process the joining areas of a fabric layer and/or to connect at least two fabric layers.
- the joining unit can be a sewing machine, a welding machine, a stapling machine, a crochet machine, an automatic gluing machine or other automatic connecting machines for fabric layers.
- the joining unit can, for example, connect two fabric layers to one another so that a seam (fabric seam or weld seam, etc.) is created.
- the seam describes, for example, the connection of two fabric layers by means of a thread or yarn, with at least one material essentially being a fabric, a fleece or a woven fabric.
- a monitoring device in particular which monitors the separation of at least one fabric layer or the plurality of fabric layers from the fabric layer stack. This ensures that an exact orientation of the fabric layers and an exact placement of the fabric layers is possible for subsequent further processing, for example at the joining unit.
- the monitoring device can also detect the wrinkle-free state of the fabric layers when this is picked up by the handling mechanism within the effector contour.
- the monitoring device can detect the correct separation of the desired fabric layers by the handling mechanism, for example by means of a weight measurement, an optical measurement/or by measuring an electromagnetic field.
- the monitoring device has an optical sensor, in particular a monitoring camera.
- the optical sensor is configured to detect an isolated layer of material which is picked up by the handling mechanism.
- an optical sensor e.g. a camera and suitable downstream evaluation, both the picking up of the layers of material and the crease-free positioning after laying down can be ensured.
- the monitoring device has a weight sensor, wherein the weight sensor is arranged on the effector in such a way that a weight of the fabric layer picked up by the handling mechanism can be measured.
- the weight sensor is installed in the work table and configured in such a way that a change in the weight of the fabric layer stack can be measured before and after the separation of a fabric layer.
- the fabric layer stack and/or the weight increase on the effector can be weighed before and after separation. By comparing before and after separation, it can be concluded how many fabric layers have been removed from the fabric layer stack by the effector.
- the monitoring device comprises a touch sensor and/or a distance sensor to determine the presence of an isolated layer of material on the handling mechanism.
- the presence of a layer of material held by the handling mechanism and, for example, the thickness of the layers of material or the total thickness of the layers of material on the effector can be monitored using the touch, distance or proximity sensor.
- a touch sensor can be understood as, for example, a pressure sensor which can determine how many layers of material are being held based on the penetration depth of a held layer of material or layers of material with a certain pressure.
- a distance sensor can, for example, measure the thickness of the layers of material.
- the distance sensor can be an ultrasound or an optical sensor, for example.
- the pressure sensor can, for example, have an extendable piston which measures the resistance when pressed into the layers of material. This can, for example, ensure that only one layer of material or a desired number of layers of material has been picked up. Such a device can also be used to decide when a gripping process should be started and when it is completed.
- the handling mechanism has a suction device that is configured to separate and pick up a layer of material from the stack of layers of material by means of negative pressure.
- the monitoring device has in particular a vacuum sensor that is configured to measure an air flow of the suction device, wherein the air flow is indicative of whether the suction device is holding a layer of material, whether several layers of material are being held or whether no layer of material is being picked up.
- the suction device has, for example, at least one suction device, wherein the suction device is designed to suck air from at least one layer of material to be held by means of the suction device in such a way that a layer of material or layers of material lying on top of one another can be fixed to the suction device. Since the Since fabric layers are permeable to air to a certain degree due to their material properties, one, two or more fabric layers can be secured in a fabric layer stack by means of suction with an appropriately set suction power.
- the suction device has, for example, a vacuum pump, which can be arranged at a distance from the effector, for example on the work table.
- One or more suction devices such as suction cups can be attached to the effector as part of the handling mechanism.
- the suction device with the suction devices can also form parts of the handling mechanism in order to align and transport the fixed fabric layers.
- the suction device also forms parts of the handling mechanism for handling the fabric layers.
- the suction device can also form a tightening area in the work table in order to hold a fabric layer lying on the work table from below (according to the principle of a vacuum clamping table) and to hold the upper fabric from above with the effector. This allows an improved relative alignment between the first fabric layer and the second fabric layer to be achieved, since the fabric layer lying on the work table does not slip and remains fixed.
- the vacuum sensor can measure the air flow (in particular the volume flow) which is sucked in by the suction cups through the held fabric layers, in particular depending on the power consumption of the vacuum pump. Based on these parameters, it can be determined whether one or more fabric layers are being held. If, for example, several fabric layers are being held, the volume flow which is sucked out with a corresponding power consumption of the vacuum pump is reduced. If the inlet air flow is reduced when a vacuum suction cup is picking up a piece of fabric, this can be seen as a sign of successful picking up by means of pressure monitoring on the vacuum line or a Flow monitoring of the suction air flow can be detected. In the case of somewhat permeable textiles, flow monitoring can also detect the incorrect picking up of two pieces of fabric. In particular, it can be discriminated, for example, that the volume flow of a vacuum gripper must be between a minimum and a maximum value.
- the suction device forms a suction surface to which one of the fabric layers or the fabric layer stack can be placed.
- the suction surface has a large number of suction openings, in particular more than 9, more than 15, more than 22 and/or more than 30 suction openings.
- the intake openings have a diameter of less than 20 mm, in particular less than 10 mm, further in particular less than 5 mm, further in particular less than 3 mm. Good results were achieved with more than 9, in particular more than 15, preferably more than 22, particularly preferably more than 30 suction openings.
- the tests on the diameter of these suction openings have shown that diameters of less than 20 mm, in particular less than 10 mm, more particularly less than 5 mm, more particularly less than 3 mm are particularly advantageous because, for example, a support material inserted between layers of fabric keeps the fabric part flat in the xy plane. This prevents distortion and the formation of wrinkles when it is laid down later.
- the monitoring device has a sensor for measuring an electromagnetic field, wherein the electromagnetic field strength is indicative of whether the handling mechanism is holding a layer of material, whether several layers of material are being held or whether no layer of material is being picked up.
- the handling mechanism has an electrostatic gripping device.
- a contact surface for example made of metal, can be formed on the effector, to which electrodes are coupled that serve as a potential source and can thus generate an electrostatic force of attraction with the layers of material.
- an electrostatic gripping device When picking up with an electrostatic gripping device, its energy flow and/or its damping by means of a capacitively coupled electromagnetic field can then be evaluated depending on whether an individual piece of material has been successfully picked up.
- the handling mechanism is configured to grasp a fabric layer at fixing points to which the handling mechanism fixes the fabric layer.
- the handling mechanism is further configured such that by moving the fixing points, the fixed fabric layer can be tensioned.
- the handling mechanism is further configured to fix the fabric layer at further fixing points within the effector contour and/or to re-tighten it with the further fixing points.
- corresponding vacuum suction cups, electrostatic attraction elements or mechanical grippers can be arranged at the fixing point.
- Corresponding movable fixing elements such as holding rods, which can be extended and retracted, for example, telescopically or by means of a joint-like connection, can be attached to the effector, with a corresponding handling mechanism attached to the holding rods.
- a fixing point By moving the fixing elements, a fixing point can then be moved, for example, and the held fabric layers can be tensioned accordingly.
- the relevant contour points for example at the edge of the effector contour.
- additional fixing points and corresponding handling mechanisms can also be placed within the clamped effector contour, which keep the piece of fabric in the clamped plane (even in the event of rapid position changes of the effector) and/or the holding rods or grippers can pre-tension the piece of fabric in the direction 'away from the center' after it has been picked up.
- the handling mechanism is further configured such that fabric layers can be picked up individually from two spaced-apart fabric layer stacks.
- One of the major tasks in subsequent automatic assembly is turning fabric layers from 'right' to 'left' (or vice versa). This task can be tackled when separating a fabric layer from the fabric layer stack by either having a fabric layer stack 'on the left' and a fabric layer stack 'on the right' or by the cutting process stacks the fabric layers in such a way that one layer is on the 'left' and one layer is on the 'right'.
- the effector has at least two handling mechanisms which can be selectively controlled for fixing one of the fabric layers or the fabric layer stack, wherein the at least two handling mechanisms can be activated and controlled in particular depending on location and/or depending on a sensor value and/or depending on a manipulation step and/or a joining step.
- the effector has at least one fixing element on which the handling mechanism or the fixing points at which the handling mechanism is present are formed.
- the handling mechanism is further designed to fix and transport the stack of fabric layers for handling to the joining unit, in particular within the effector contour.
- the handling mechanism is selected, for example, from the group consisting of grippers, suction cups, clamps, areas with increased friction and/or electrostatic attraction, holding needles, rollers, freezing grippers, and/or Bernoulli grippers.
- Electroadhesive grippers for electrostatic attraction work with electrostatic fields. Holding forces are generated by polarization. They can be generated on the upper side of the fabric layer, which is in contact with a gripper dielectric of the electroadhesive gripper.
- a Bernoulli gripper has a suction body, whereby compressed air flows outwards between the fabric part and the suction body along the x-y plane via a flow channel of the suction body at the edge areas of the suction body. In the center of the suction body there is an air opening which is coupled to the flow channel. Due to the Bernoulli effect, air is sucked into the flow channel from the direction of the fabric part. This creates a fixing force of the fabric part on the suction body.
- a freezing gripper has a very cooled contact surface with the material part, whereby frozen water or ice acts as an adhesive that adheres the material part to the contact surface.
- the water can be taken as an adhesive from the atmosphere (humidity) or added from an adhesive supply.
- the handling mechanism can be controlled in such a way that different gripping intensities can be controlled for fixing one of the fabric layers or several fabric layers. If fabric layers of different thicknesses, different technical/haptic properties or different layering 'left' / 'right' have to be processed with the handling mechanism, it is advantageous if the gripping can be controlled in a further degree of freedom, namely with the different gripping intensity. In particular, a different gripping intensity and A different handling mechanism can also be selected if the material layer being gripped involves the left or right side of the material part.
- the end of a material layer can be gently gripped with a suction device, while the left side can be picked up with holding needles, since a line on the left side of the material layer is acceptable.
- the gripping intensity and/or the type of handling mechanism can be selected depending on the location of the material layer.
- an effector can have a handling mechanism for large material layers with a large area and a handling mechanism with several closely spaced fixation points in another area of the effector.
- location-dependent gripping can be selected with one handling mechanism on the effector or with the other handling mechanism on the effector.
- the gripping intensity can be selected depending on the process step of the handling robot.
- a greater gripping intensity can be selected, for example a high suction power of a suction device can be present, but less gripping intensity, ie less suction power of the suction device when moving the layer of fabric along the work table.
- appropriate control of the suction power can also prevent the suction device from getting stuck on the work table, for example.
- the fixing elements each have, for example, at least one support rod (or, as described below, a framework of coupling rods), which is movably attached to the effector at one end.
- corresponding fixing devices or fixing mechanisms are provided, such as a gripper or a holding needle device, which has holding needles for holding the piece of fabric.
- the support rod can in particular, it can be attached to the effector in a pivotable and/or translationally displaceable manner.
- the support rod can be telescopically retractable and extendable, for example, in order to change its length.
- the support rod itself can have at least one joint, so that the support rod itself has two partial areas that can be pivoted towards itself. This enables precise setting and adjustment of the gripping device of a fixing element.
- the adjustment of the effector contour of the effector can be made possible, for example, by integrated actuators (e.g. stepper motors with mechanical transmission to the fixing elements).
- the fixing elements are arranged on the effector such that at least one fixing element or all guide elements have two degrees of freedom per arm in an x-y plane and in particular a further additional degree of freedom in the z plane (for folding away inactive grippers).
- the x-y plane is defined as the plane in which the material layer is located when it is fixed by the fixing elements.
- the material layer is stretched between the fixing elements. In this stretched state, the material layer has a flat shape and is therefore located within the x-y plane.
- the normal of the x-y plane forms the z direction.
- the x-y plane forms the material plane and the thickness of the material is defined along the z direction.
- the monitoring device generates monitoring data which describe the number, orientation and/or nature of the material layer which is fixed to the handling mechanism, wherein the handling mechanism can be controlled based on the monitoring data.
- the monitoring data can be obtained and monitored, for example, using sensors described above.
- the data is, for example, processed in a control unit.
- the control unit can also be configured to control the handling robot and in particular the handling mechanism.
- the handling mechanisms are adapted in real time based on the sensor signals. For example, an electronic weighing device or the weight sensor of the fabric stack or the load weight on the effector can determine whether only one layer of fabric has really been separated.
- the optical sensor can monitor the manipulation progress in various work steps and, if necessary, have an effect on the handling mechanism or the manipulation.
- artificial intelligence mechanisms can be used for wrinkle detection or prevention.
- a learning process can improve the detection and/or the effect on the robotics/gripping of this embodiment.
- the unevenness can be determined using a 3D scan of the surface of the separated piece of fabric. If the unevenness reaches a certain level (especially if the first derivative of the Z height of a measuring line in one of the coordinate directions produces a noticeable impulse response), it can be assumed that wrinkles are forming. As a countermeasure, the layer of fabric can be lifted again and placed back down, or the layer of fabric can be sorted out into a faulty pile. Such an embodiment can ensure that only one piece of fabric is picked up during separation.
- control unit is designed to control the handling robot and/or the joining unit, wherein the control unit is configured to collect and evaluate the data relating to the movement of the effector and data relating to the joining result of the joining unit and in particular the monitoring data in order to take measures relating to the control of the movement of the effector and the joining process of the joining unit in the event of a predetermined deviation from a predeterminable limit value.
- the control unit can be connected wirelessly or with a cable to the individual sensors of the system in order to obtain the corresponding movement data, position data and status data of the effector as well as the data of the joining unit and the status data of the joining point or the joining result of the material part.
- control unit can be equipped with a storage unit with a database or with the data processing unit or can be coupled with a remote, web-based or cloud-stored database.
- the database can contain, for example, target values for the data or measured parameters. Based on an actual/target value comparison, the control unit can generate corresponding control commands for the system.
- the system according to the invention uses the findings from the sensory assessment to determine whether the respective manipulation was successful. In this way, a change in reliability can be detected and communicated to a higher-level system. This can, for example, initiate preventive maintenance or an adjustment of the handling parameters.
- the handling mechanism has a holding needle device with holding needles, which is configured such that a piercing depth and/or a piercing angle of at least one holding needle can be controlled, in particular in real time and/or based on sensor feedback.
- the holding needle device is designed to introduce holding needles into the fabric layers for fixing.
- one or more needle-like pins or holding needles can be driven from a magazine into or through the fabric layers either from the effector side, from the work table side or from an auxiliary system (e.g. auxiliary plate, needle band) in order to fasten them to one another and/or to the effector.
- the holding needle device has in particular a feed device, for example a holding needle magazine, which is configured to feed holding needles for the holding needle device.
- An additional form of differentiated gripping may involve the depth of a piercing needle or holding needle and/or the angle of a holding needle (and particularly a plurality of them).
- a holding needle may be inserted at a shallow angle or not as deeply into the fabric layer during singulation, while with thicker fabric layers a steeper angle or greater penetration depth may be used to securely grip the fabric layer or layers.
- the holding needles have a diameter of less than 1300 micrometers, less than 900 micrometers, in particular less than 550 micrometers, and more particularly less than 250 micrometers. It has been found that when fine microneedles are used as holding needles in combination with a suitable vacuum and a suitable air flow, no quality-impairing effects remain on the fabric surface after processing. This has been shown particularly with needle diameters of less than 1300 micrometers, less than 900 micrometers, in particular less than 550 micrometers, preferably less than 250 micrometers.
- the handling mechanism has a support element, in particular a support plate, for placing the at least one material layer to be transported, wherein the handling mechanism is configured in particular such that the material layer can be lifted and the support element can be transported under the fixed material layer.
- the support element can, for example, have a fork shape, or the support plate can have a round support surface or a square support surface.
- the support element can have an adhesive surface so that the material layer does not slip down accidentally during transport or joining.
- the support element can, for example (e.g. via a another robot arm) must be articulated on the effector in order to be inserted under or between the layers of fabric.
- the handling mechanism can lift the topmost fabric layer or at least one edge or border using the embodiments explained (e.g. using a temporary adhesive, with holding or micro needles, using a Bernoulli gripper or using suction cups or a vacuum) so that the support element can be moved in between, i.e. can then be transported between the topmost fabric layer(s) and the underlying fabric layers or the work table.
- the support element first moves in the x or y direction under the fabric layer to be lifted so that at the beginning the front edge of the support element is parallel to the straight cut edge of the fabric layer.
- the support element is completely (or at least partially) pushed under, the support element is lifted vertically or in the z direction together with the fabric layer to be lifted and is thus separated from the rest of the underlying fabric layers.
- the handling mechanism is designed such that a joining area of the fabric layer, on which a joining step of a joining unit can be carried out, forms a projection of more than 0.5 cm, in particular more than 1 cm, more particularly more than 2 cm or more than 3 cm, relative to the effector contour.
- the resulting material projection defines the joining areas and enables subsequent joining.
- the joining area can then be placed on at least one other free joining area of another fabric layer.
- the joining area can be manipulated in such a way that it is folded (e.g. for a hem) and thus forms the fabric layer. It is particularly important that all handling mechanisms or fixing points are located within the effector contour.
- edge effects which are particularly characterized by the cutting process of the fabric layers (fibers that jam into the next layer below, bending of cut edges in stiffer fabrics, fraying of fabric due to cutting, cutting bleeds, etc.), or to control them in handling.
- a joining area of a fabric layer describes an area that is to be processed with a joining unit.
- the joining area can, for example, be the area of a fabric layer where a seam or hem can run.
- joining areas of two superimposed fabric layers are placed on top of each other so that they can be connected using the joining unit (for example by sewing or welding).
- the system further comprises the work table with the work surface, wherein the work table has a holding-down device which is designed to selectively fix the fabric layer to the work table, in particular by means of electrostatic holding forces.
- the holding-down device can press against the work table/work surface with a force, which leads to a fixation of the two intermediate fabric layers.
- the effector can also allow compressed air to flow between its underside and the fabric layers. This is particularly helpful when the effector has to reposition itself so that it can quickly overcome the adhesive forces between the effector and the first fabric layer. This allows a fabric part to be deposited safely and flatly after separation.
- the monitoring device has a humidity sensor.
- the handling mechanism which is designed in particular as an electrostatic Handling mechanics are designed to be controlled based on the measured air humidity.
- the system also has an air humidification device for adjusting the air humidity, wherein the air humidification device is controllable based on the measured air humidity.
- the air humidity can be measured in the ambient air of the work area and in particular near or in the stack of material. From the humidity values determined, the air humidity can be increased using a suitable additional device (e.g. an air humidifier) so that no disruptive electrostatic effects occur and/or influences on the gripping mechanism can be triggered (e.g. higher holding forces when the layers of material are moist and therefore heavier).
- Electrostatic gripping systems in particular are strongly influenced by material moisture and air humidity, so that this type of application is particularly recommended there.
- the monitoring device is set up to detect incorrect gripping or incorrect placement of the material layer on the handling mechanism, wherein the handling mechanism is designed to put down the material layer and re-grip it when incorrect gripping or incorrect placement is detected.
- the incorrect gripping can be detected in particular by the monitoring device and its described sensors. This can effectively prevent a material layer from being misaligned during handling due to incorrect handling (e.g. pressing together too hard and the corresponding formation of creases) or joints between two material layers from being misaligned due to incorrect positioning.
- the effector is designed to be exchangeable.
- the system can have an effector exchange device which is designed to automatically couple and decouple an effector from the handling robot.
- the effector exchange device is particularly designed to automatically couple and decouple supply lines to the effector.
- the effector exchange device is also configured to transport the effector between a storage location and the handling robot.
- the effector can thus be deposited at a location and another effector can be coupled to the handling robot.
- the required connections to resources energy, compressed air, vacuum, data, control lines
- dust-tightness is ensured. In this way, the contour issue can be solved for pieces of fabric of different sizes.
- the effector exchange device is arranged, for example, in a storage location where a large number of different effectors with different handling mechanisms can be stored.
- the handling robot can place the effector at a predetermined location on the effector exchange device by moving its robot arm.
- the effector exchange device can be arranged locally at the storage location to accommodate the effector.
- automatic coupling and decoupling can take place on the robot arm in order to place the effector at a desired location on the effector exchange device.
- the effector exchange device can also have coupling elements, such as decoupling tools, to release corresponding fluid lines or lines between the effector and the robot arm or to connect them during coupling.
- the effector exchange device itself can have a robot arm and move to the coupling location of the effector.
- the effector exchange device can decouple and couple the effector accordingly using a decoupling tool.
- the system may comprise an effector cleaning system, particularly at the storage location, in order to clean.
- the unused effector can be cleaned (automatically) with the effector cleaning system.
- surfaces with special friction resistance require regular cleaning to ensure the desired friction effects.
- sensors such as optical lenses of the optical sensor or parts of the suction device or the vacuum system can be cleaned with the effector cleaning system.
- the effector is designed to press the fabric layer down on a work surface of a work table.
- the robot can carry out a hold-down action before separation and, for example, press on the fabric layer stack.
- This can, for example, be a brief pressing down of the fabric stack (without activated grippers) so that the air between the fabric layers can escape from the side.
- the contour reduction or the reduced effector contour of the effector is again advantageous, since when the fabric layer stack is compressed, there is less obstruction to residual air escaping between the fabric layers.
- the effector is configured to carry out a smoothing action on the fabric layer, in particular when a fold is detected by means of the monitoring device.
- the effector is configured in particular such that the effector places the fabric layer on a work table and changes the fixing points of the handling mechanism with the fabric layer, so that the fabric layer can be smoothed out.
- the smoothing action can be carried out by
- Effector may comprise a roller unit which is particularly configured such that that the effector places the fabric layer on a work table and smooths the fabric layer using the roller unit.
- the effector in order to carry out the smoothing action, can be configured in particular in such a way that repositioning and corresponding smoothing of the material layer can be carried out by lifting it and placing it again on a work table.
- the effector in particular be configured such that a shaking movement can be carried out by means of the effector in order to achieve a smoothing of the material layer.
- the effector can have a blow-out unit for blowing out compressed air in the direction of the fabric layer, which is in particular configured such that compressed air can be blown onto the surface of a fabric layer in order to stretch it to reduce wrinkles.
- the effector can have a smoothing plate, in particular a heatable smoothing plate, and can be configured such that smoothing can be carried out by pressing the smoothing plate onto the fabric layer.
- the effector can have an elastic and/or inflatable stamp (so-called fulling) and can be configured in such a way that the surface of the stamp can be enlarged by pressing the stamp onto the fabric layer, thus making it possible to smooth the fabric layer. Due to a friction surface between the stamp and the fabric layer, when the surface of the stamp is enlarged, the fabric layer spreads apart and wrinkles are reduced.
- the system has a loosening unit for loosening the fabric layer stack, wherein the loosening unit is arranged on a work table next to a fabric layer stack and/or on the effector.
- the loosening unit has, for example, a shaking unit for shaking the fabric layer stack, a compressed air unit for blowing compressed air into the fabric layer stack from the side and/or an elastostatic unit for statically charging the fabric layers of the fabric layer stack.
- the effector can press on the fabric layer stack and at the same time loosen the fabric layer stack with compressed air and/or with a mechanical movement of the loosening unit, which can be mounted stationary on the work table or on the effector.
- the loosening unit can blow compressed air in, for example, from the side, over the cut edges of the fabric stack.
- the smaller effector contour of the effector compared to the corresponding outer fabric layer contour is an advantage, as this leaves the edge zones free for loosening movement.
- a shaking mechanism can also loosen the fabric stack. In the case of fabric stacks, this can be achieved using electromagnetic/electrostatic effects or compressed air flowing past at the side.
- the system comprises a feed unit configured to convey a fabric layer stack.
- the feed unit is configured to transport a fabric layer stack from a storage area to a work table, at which fabric layers of the fabric layer stack can be separated by means of the handling mechanism of the effector.
- the feed unit can, for example, have a conveyor belt and/or a manipulator (for example another handling robot or a forklift truck) which transports the fabric layer stack from the storage area to the work table.
- the fabric layer stack is automatically brought from a storage area to the work area of the separation according to the invention.
- the separation system can obtain sufficiently precise information as to when a successful separation has been completed due to the additional monitoring of the separation, a prediction can be derived from this as to when the next separation can take place (at the earliest). This is of functional importance, especially when changing fabric layer stacks, in order to prevent breaks and waiting times, since the automatic feeding of another fabric layer stack from a storage area requires a certain lead time before the first fabric part from this fabric layer stack is separated.
- the effector has a contact surface to which one of the fabric layers or the fabric layer stack can be applied within the effector contour. This allows the fabric layer to be transported and later deposited without distortion or wrinkles.
- the contact surface forms in particular part of the handling mechanism for fixing one of the fabric layers or the fabric layer stack, whereby the contact surface is designed to hold one of the fabric layers or the fabric layer stack magnetically, based on air pressure, mechanically or electrostatically to the effector.
- the contact surface allows the To transport fabric layers or the fabric layer stack without distortion or creases and to deposit them later. After positioning or stacking the fabric layers, the fabric layers can be fixed more easily using the contact surface.
- the contact surface can be part of a magnetic device, for example, and be designed to be magnetic accordingly.
- the contact surface can hold the fabric layers using negative pressure, mechanical elements (e.g. continuous microneedles) or electrostatic elements.
- the contact surface forms a suction surface as part of the handling mechanism, onto which one of the fabric layers or the fabric layer stack can be placed.
- the system has a data processing unit which is configured to provide fabric layer data relating in particular to fabric layer material and/or fabric layer geometry.
- the data processing unit is further configured to provide processing data, in particular left/right position, orientation, folds and/or manufacturing quality of one of the fabric layers or the fabric layer stack.
- the system can thus pass on information details on the placement of the fabric layers to a subsequent handling system for the next work step. This means that the new recording of position details, material details and/or left/right placement of the fabric layer can be omitted. It has been shown that details on material properties, left/right position, location, folds and/or manufacturing quality are particularly suitable for forwarding.
- control unit particularly in conjunction with the data processing system, can be used to draw on findings from the sensory evaluation to determine whether the respective manipulation or handling was successful. In this way, a change in reliability can be detected and communicated to a higher-level system. This can, for example, preventive maintenance or an adjustment of the handling parameters can be initiated.
- the effector has at least two, in particular different, handling mechanisms, wherein the two handling mechanisms have different handling mechanisms and/or apply different gripping intensities on the left and right side of one of the fabric layers or the fabric layer stack.
- the different handling mechanisms can, for example, have an electrostatic and/or a vacuum-based (e.g. a suction device) handling mechanism on the one hand, which are controlled differently for the separation than for other manipulation steps.
- a vacuum-based (e.g. a suction device) handling mechanism on the one hand, which are controlled differently for the separation than for other manipulation steps.
- a vacuum-based (e.g. a suction device) handling mechanism can, which are controlled differently for the separation than for other manipulation steps.
- only some of the existing vacuum suction devices of a suction device can be activated for the separation so that several fabric layers are not grasped, but then all suction devices can be activated so that the fabric layer remains securely fixed when the effector changes position quickly.
- the same principle can also be implemented with electrostatic/e
- the effector is designed to wait between two separations, in which a material layer is separated from the material layer stack using the handling mechanism, for more than 1 second, in particular more than 2 seconds, in particular more than 4 seconds, in particular more than 8 seconds, until the next separation from the same material layer stack.
- Picking up and handling a material layer from a material layer stack can lead to the material layers lying further down being lifted. It has been shown that by taking a break between two separations from the same Stacks of fabric layers, the raised layers can sink back again.
- Fig. 1 shows a schematic representation of a system for handling fabric layers according to an exemplary embodiment.
- Fig. 2 shows a schematic representation of an effector with a handling mechanism according to an exemplary embodiment.
- Fig. 3 shows a schematic representation of a handling mechanism with a suction surface according to an exemplary embodiment of the present invention.
- Fig. 4 shows a schematic representation of a system for handling and processing fabric layers with fixation elements arranged on the effector, according to an exemplary embodiment.
- Fig. 5 shows a schematic representation of a system with an effector exchange device according to an exemplary embodiment.
- Fig. 6 shows a schematic representation of a system with a roller unit for performing a smoothing action according to an exemplary embodiment.
- Fig. 7 shows a schematic representation of a system with a blow-out unit for performing a smoothing action according to an exemplary embodiment.
- Fig. 8 shows a schematic representation of a system with a smoothing plate for performing a smoothing action according to an exemplary embodiment.
- Fig. 9 shows a schematic representation of a system with a stamp for performing a smoothing action according to an exemplary embodiment.
- Fig. 10 shows a schematic representation of a system with a loosening unit for supporting the separation of material layers according to an exemplary embodiment.
- Fig. 1 shows a schematic representation of a system 100 for handling material layers 111 according to an exemplary embodiment.
- the system has a handling robot 100 with an effector 101 for handling material layers 111, wherein the effector 101 has a handling mechanism 120 which is designed to pick up and place down at least one material layer 111.
- the handling mechanism 120 has an effector contour 106, wherein the material layer 111 can be fastened within the effector contour 106, wherein the effector contour 106 is smaller than an outer contour of the material layer 111.
- the handling mechanism 120 is configured to separate and pick up at least one fabric layer 111 individually from a fabric layer stack 112, to lay at least one separated fabric layer 111 flat on a work surface 102 of a work table 103, and to transport the fabric layer 111 within the effector contour 106 without creases. Furthermore, the system has a monitoring device 130 which is configured to monitor the separation of the at least one fabric layer 111 from the fabric layer stack 112.
- the handling mechanism 120 is configured to individually separate and pick up at least one fabric layer 111 from a fabric layer stack 112, wherein the handling mechanism 120 is further configured to lay at least one separated fabric layer 111 flat on a work surface 102 of a work table 103 and to stretch the fabric layer 111 within the effector contour 106 without creases.
- the system has a monitoring device 130 which is configured to monitor the separation of the at least one material layer 111 from the material layer stack 112.
- the monitoring device 130 can monitor the process of separating the at least one material layer 111 and thus ensure whether, for example, the predetermined number, i.e. one or a specific number of material layers 111 are handled.
- the handling robot 100 has the effector 101, to which the corresponding handling mechanism 120 is attached, in particular in an exchangeable manner.
- the handling robot 100 is attached to a stationary robot base on the floor or on the work table 103 in order to introduce corresponding forces into the corresponding system.
- the handling robot 100 can also be configured in such a way that the robot base is designed to be movable along the floor.
- a robot arm 104 can be arranged between the effector 101 and the robot base, which has, for example, one or more joints in order to thus control the effector 101 into a desired position.
- the controllable handling mechanism 120 is arranged on the effector 101.
- the handling mechanism 120 transports one or more material layers 111.
- the material layers 111 can be laid loosely on top of one another and gripped as a stack (for example by means of negative pressure or by means of a mechanical gripper of the handling mechanism 120), or the material layers 111 are fastened together, for example temporarily.
- the handling mechanism 120 can transport the material layers 111 to a joining unit 140.
- the effector 101 or the handling mechanism 120 can adapt to the contour of the material layers 111, for example by adjusting the fixing points of the handling mechanism 120 to which the material layers 111 are fixed.
- the fixing elements 401 described below can be arranged for this purpose, in which the individual fixing points are formed.
- the handling mechanism 120 covers in particular the outline-relevant points of a contour of the material layer 111, with one edge of the material layers 111 preferably remaining free as a joining area 113 and not being covered by the handling mechanism 120.
- the area of the material layers 111 that is covered by the effector 101 or the handling mechanism 120 for fixing the material layers 111 is referred to below as the effector contour 106.
- the effector 101 has a contact surface to which one of the material layers 111 or the material layer stack 112 can be placed within the effector contour 106. This allows the material layer 111 to be transported and later deposited without distortion or wrinkles.
- the effector 101 thus forms an end part of the handling robot 100 with, for example, grippers as handling mechanism 120, which grasp and manipulate a fabric layer 111 (for example a flat unprocessed fabric layer 111 or an entire garment as fabric layer 111) or a fabric layer stack 112 consisting of fabric layers 111 that are fastened with a fixing mechanism.
- the joining unit 140 is configured to process the joining areas of a fabric layer 111 and/or to connect at least two fabric layers 111.
- the joining unit 140 can be a sewing machine, a welding machine, a stapling machine, a crocheting machine, an automatic gluing machine or other automatic connecting machines for fabric layers 111.
- the joining unit 140 can, for example, connect two fabric layers 111 to one another so that a seam (fabric seam or weld seam, etc.) is created.
- the seam describes, for example, the connection of two fabric layers 111 by means of a thread or yarn, wherein at least one material essentially represents a fabric, a fleece or a woven fabric.
- a monitoring device 130 which monitors the separation of the at least one fabric layer 111 or the plurality of fabric layers 111 from the fabric layer stack 112. This ensures that an exact orientation of the fabric layers 111 and an exact placement of the fabric layers 111 is possible for subsequent further processing, for example on the joining unit 140.
- the monitoring device 130 can also detect the wrinkle-free state of the fabric layers 111 when they are picked up by the handling mechanism 120 within the effector contour 106.
- the monitoring device 130 has an optical sensor 131, in particular a monitoring camera.
- the optical sensor 131 is configured to detect an isolated fabric layer 111 which is picked up by the handling mechanism 120.
- an optical sensor 131 e.g. a camera and suitable downstream evaluation, both the pickup in the fabric layers 111 and the crease-free positioning after laying down can be ensured.
- the monitoring device 130 has a weight sensor 132, wherein the weight sensor 132 is arranged on the effector 101 such that a Weight of the material layer 111 picked up by the handling mechanism 120 is measurable.
- a weight sensor 403 is installed in the work table 103 (see Fig. 4) and configured such that a change in weight of the material layer stack 112 before and after the separation of a material layer 111 is measurable.
- the monitoring device 130 has a distance sensor 133 to determine the presence of an isolated material layer 111 on the handling mechanism 120.
- the distance sensor 133 By means of the distance sensor 133, the presence of a material layer 111, which is held by the handling mechanism 120, and, for example, also the thickness of the material layers 111 or the total thickness of the material layers 111 on the effector 101 can be monitored.
- the handling mechanism 120 has a suction device 121 that is configured to use negative pressure to separate and pick up a fabric layer 111 from the fabric layer stack 112.
- the monitoring device 130 has, for example, a vacuum sensor that is configured to measure an air flow of the suction device 121, wherein the air flow is indicative of whether the suction device 121 is holding a fabric layer 111, whether several fabric layers 111 are being held, or whether no fabric layer 111 is being picked up.
- the suction device 121 has, for example, at least one suction device, wherein the suction device 121 is designed to suck air from at least one material layer 111 to be held by means of the suction device in such a way that the material layers 111 can be fixed to the suction device 121. Since the material layers 111 are permeable to air to a certain extent due to their material properties, one, two or more material layers 111 can be attached in a material layer stack 112 by means of suction with a correspondingly set suction power.
- the suction device 121 has, for example, a Vacuum pump, which can be arranged at a distance from the effector 101, for example on the work table 103.
- One or more suction devices can be attached to the effector 101 as part of the handling mechanism 120.
- the suction device 121 with the suction devices can also form parts of the handling mechanism 120 in order to align and transport the fixed material layers 111.
- the suction device 121 also forms parts of the handling mechanism 120 for handling the material layers 111.
- the handling mechanism 120 is, for example, selected from the group consisting of grippers, suction cups, clamps, areas with increased friction and/or electrostatic attraction, holding needles, rollers, freezing grippers, and/or Bernoulli grippers.
- the handling mechanism 120 can be controlled in particular by the control unit 105 such that different gripping intensities for fixing one of the material layers 111 or several material layers 111 can be controlled.
- the monitoring device 130 generates monitoring data which describe the number, orientation and/or nature of the material layer 111 which is fixed to the handling mechanism 120, wherein the handling mechanism 120 can be controlled based on the monitoring data.
- the monitoring data can be acquired and monitored using sensors 131, 132, 133, for example.
- the data is processed in the control unit 105, for example.
- the control unit 105 can also be configured to control the handling robot 100 and in particular the handling mechanism 120.
- the control unit 105 is thus designed to control the handling robot 100 and/or the joining unit 140, wherein the control unit 105 is configured to receive the data relating to the movement of the effector 101 and To collect and evaluate data on the joining result of the joining unit 140 and in particular the monitoring data in order to take measures relating to the control of the movement of the effector 101 and the joining process of the joining unit 140 in the event of a predetermined deviation from a predeterminable limit value.
- the control unit 105 can be coupled wirelessly or by cable to the individual sensors of the system in order to receive the corresponding movement data, position data and status data of the effector 101 as well as the data of the joining unit 140 and the status data of the joining point or the joining result of the material part.
- the system further comprises a feed unit 107 which is configured to convey a fabric layer stack 112.
- the feed unit 107 is configured to convey a fabric layer stack 112 from a storage area to a work table 103, at which fabric layers 111 of the fabric layer stack 112 can be separated by means of the handling mechanism 120 of the effector 101.
- the feed unit 107 can comprise, for example, a conveyor belt and/or a manipulator (for example, another handling robot 100 or a forklift truck) which conveys the fabric layer stack 112 from the storage area to the work table 103.
- Fig. 2 shows a schematic representation of an effector 101 with a handling mechanism 120 according to an exemplary embodiment.
- the effector 101 has at least two, in particular different, handling mechanisms 120, wherein the two handling mechanisms 120 have different handling mechanisms and/or apply different gripping intensities on the left and right side of one of the fabric layers 111 or the fabric layer stack 112.
- the effector 101 has a suction device 121 and a holding needle device 201.
- the suction device 121 and the Holding needle device 201 can be selectively controlled to fix one of the fabric layers 111 or the fabric layer stack 112.
- the holding needle device 201 has holding needles 202 which are configured such that a piercing depth and/or a piercing angle of at least one holding needle 202 can be controlled.
- the holding needle device 201 is designed to introduce holding needles 202 into the material layers 111 for fixing.
- one or more needle-like pins or holding needles can be driven from a magazine into or through the material layers 111 either from the effector side, from the work table side or from an auxiliary system (e.g. auxiliary plate, needle band) in order to fasten them to one another and/or to the effector 101.
- the holding needle device 201 has in particular a feed device, for example a holding needle magazine, which is configured to feed holding needles for the holding needle device.
- Fig. 3 shows a schematic representation of a handling mechanism 120 with a suction surface 301 according to an exemplary embodiment of the present invention.
- the suction device 121 forms the suction surface 301, to which one of the fabric layers 111 or the fabric layer stack 112 can be placed.
- This surface 301 thus forms the effector contour 106.
- the suction surface 301 has a plurality of suction openings 302. In a handling mechanism 120 based on negative pressure, with a small suction opening, sufficient force can only be generated with high negative pressure to hold the fabric layers 111.
- Fig. 4 shows a schematic representation of a system for handling and processing fabric layers 111 with fixing elements 401 arranged on the effector 101, according to an exemplary embodiment.
- the fixing elements 401 can be pivoted on the effector 101 and
- the handling mechanism 120 can be arranged extendably on one of the fixing elements 401, wherein the handling mechanism 120 is further designed to fix and transport the fabric layer stack 112 for handling to the joining unit 140, in particular within the effector contour 106.
- the effector 101 can have several, e.g. five, fixation elements 401.
- a fixation element 401 has at least one handling mechanism 120, for example a suction device 121, a mechanical gripper, grippers with vacuum nozzles, a holding needle device 201 with holding needles 202, a fixation system with electrostatic attraction, fixation rollers, in particular counter-rotating fixation rollers and/or clamps.
- Several fixing points with corresponding (identical or different) handling mechanisms 120 can be arranged on a support rod of a fixing element 401.
- the support rod can in particular be attached to the effector 101 in a pivotable and/or translationally displaceable manner.
- the support rod can be telescopically retractable and extendable, for example, in order to change its length.
- the support rod itself can have at least one joint, so that the support rod itself has two partial areas that can be pivoted towards itself. This enables precise setting and adjustment of the gripping device of a fixing element 401.
- the adjustment of the effector contour 106 of the effector 101 can be made possible, for example, by integrated actuators (e.g. stepper motors with mechanical transmission to the fixing elements 401).
- the fixing elements 401 are arranged on the effector 101 such that at least one fixing element 401 or all guide elements 401 have two degrees of freedom per arm in an xy plane and in particular a further additional degree of freedom in the z-plane (for folding away inactive grippers).
- the x-y plane is defined as the plane in which the material layer 111 is present when it is fixed by the fixing elements.
- the material layer 111 is stretched between the fixing elements. In this stretched state, the material layer 111 has a flat shape and thus lies within the x-y plane.
- the normal of the x-y plane forms the z direction.
- the x-y plane forms the material plane and the thickness of the material is defined along the z direction.
- the handling mechanism 120 is configured to grasp a fabric layer 111 at fixing points to which the handling mechanism 120 fixes the fabric layer 111.
- the handling mechanism 120 is further configured such that the fixed fabric layer 111 can be tensioned by moving the fixing points.
- the handling mechanism 120 is further configured to fix the fabric layer 111 at further fixing points within the effector contour 106 and/or to re-tension it with the further fixing points. By moving the fixing elements 401, a fixing point can then be moved, for example, and tensioning of the held fabric layers 111 can be made possible accordingly.
- a data processing unit 402 is shown, which is configured to provide fabric layer data relating in particular to fabric layer material and/or fabric layer geometry.
- the data processing unit 402 is further configured to provide processing data, in particular left/right position, alignment, folds and/or manufacturing quality of one of the fabric layers 111 or the fabric layer stack 112.
- the data processing unit 402 is coupled to the control unit 105 for data exchange.
- the control unit 105 can be used to In conjunction with the data processing system 402, the findings from the sensory evaluation can be used to determine whether the respective manipulation or handling was successful.
- Fig. 5 shows a schematic representation of a system with an effector exchange device 501 according to an exemplary embodiment.
- the effector 101 is designed to be exchangeable.
- the system can have an effector exchange device 501 which is designed to automatically couple and decouple an effector 101 from the handling robot 100.
- the effector exchange device 501 is designed in particular to automatically couple and decouple supply lines to the effector 101.
- the effector exchange device 501 is also configured to transport the effector 101 between a storage location 503 and the handling robot 100.
- the effector 101 can thus be deposited at a location and another effector 101 can be coupled to the handling robot 100.
- the required connections to resources energy, compressed air, vacuum, data, control lines
- dust tightness is ensured. In this way, the contour issue can be solved for pieces of fabric of different sizes.
- the effector exchange device 501 is arranged, for example, at a storage location 503, at which a plurality of different effectors with different handling mechanisms can be stored.
- the handling robot 100 can place the effector 101 at a predetermined location on the effector exchange device 501 by moving its robot arm 104.
- the effector exchange device 501 can be arranged locally at the storage location 503 to receive the effector 101.
- automatic coupling and decoupling can take place on the robot arm 104 in order to place the effector 101 at a desired location on the effector exchange device 501.
- the system can have an effector cleaning system 504 in particular at the storage location 503 in order to clean the effector 101.
- the unused effector 101 can be cleaned (automatically) with the effector cleaning system 504.
- surfaces with special friction resistance require regular cleaning to ensure the desired friction effects.
- sensors such as optical lenses of the optical sensor 131 or parts of the suction device 121 or the vacuum system can be cleaned with the effector cleaning system 504.
- the work table 103 has a hold-down device 505, which is designed to selectively fix the material layer 111 to the work table 103, in particular by means of electrostatic holding forces.
- the hold-down device 505 can press against the work table 103/the work surface 102 with a force, which leads to a fixation of the two intermediate material layers 111.
- the effector 101 can also allow compressed air to flow between its underside and the material layers 111. This is particularly helpful when the effector 101 has to reposition itself so that it can quickly overcome the adhesive forces between the effector 101 and the first material layer 111.
- Fig. 6 shows a schematic representation of a system with a roller unit 601 for carrying out a smoothing action according to an exemplary embodiment. If a fold is detected by means of the monitoring device 130, such a smoothing action of the fabric layer 111 can be carried out.
- the effector 101 is configured in particular such that the effector 101 places the fabric layer 111 on a work table 103 and changes the fixing points of the handling mechanism 120 with the fabric layer 111 so that the fabric layer 111 can be smoothed out.
- the effector 101 can in particular be configured in such a way that be configured such that repositioning and corresponding smoothing of the material layer 111 can be carried out by lifting it and placing it again on a work table 103.
- the effector 101 can be configured in particular such that a shaking movement can be carried out by means of the effector 101 in order to achieve smoothing of the material layer 111.
- the effector 101 can have a roller unit 601 to carry out the smoothing action, in particular it is configured such that the effector 101 places the fabric layer 111 on a work table 103 and smooths the fabric layer 111 by means of the roller unit 601.
- Fig. 7 shows a schematic representation of a system with a blow-out unit 701 for carrying out a smoothing action according to an exemplary embodiment.
- the effector 101 can have a blow-out unit 701 for blowing out compressed air in the direction of the fabric layer 111, which is particularly configured such that compressed air can be blown onto the surface of a fabric layer 111 in order to stretch it to reduce wrinkles.
- Fig. 8 shows a schematic representation of a system with a smoothing plate 801 for carrying out a smoothing action according to an exemplary embodiment.
- the effector 101 can have a smoothing plate 801, in particular a heatable smoothing plate 801, and can be configured such that smoothing can be carried out by pressing the smoothing plate 801 onto the material layer 111.
- Fig. 9 shows a schematic representation of a system with a stamp 901 for carrying out a smoothing action according to an exemplary embodiment.
- the effector 101 has a elastic and/or inflatable stamp 901 and be configured such that by pressing the stamp 901 onto the fabric layer
- the surface of the stamp 901 can be enlarged and thus a smoothing of the material layer 111 can be carried out.
- Fig. 10 shows a schematic representation of a system with a loosening unit 1001 for supporting the separation of fabric layers 111 according to an exemplary embodiment.
- the loosening unit 1001 is arranged on a work table 103 next to a fabric layer stack 112 and/or on the effector 101.
- the loosening unit 1001 has a compressed air unit for blowing compressed air into the fabric layer stack from the side.
- the effector 101 can press on the fabric layer stack 112 and at the same time loosen the fabric layer stack 112 with compressed air and/or a mechanical movement of the loosening unit 1001, which is mounted stationary on the work table 103.
- the loosening unit 1001 can, for example, blow compressed air in, in particular from the side, over the cut edges of the fabric layer stack 112.
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Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202480037987.6A CN121620435A (zh) | 2023-06-07 | 2024-06-06 | 用于分离织物层的系统和方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102023114951.2A DE102023114951A1 (de) | 2023-06-07 | 2023-06-07 | System zur Vereinzelung von Stofflagen |
| DE102023114951.2 | 2023-06-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024251889A1 true WO2024251889A1 (de) | 2024-12-12 |
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ID=91481689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2024/065633 Ceased WO2024251889A1 (de) | 2023-06-07 | 2024-06-06 | System und verfahren zur vereinzelung von stofflagen |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN121620435A (de) |
| DE (1) | DE102023114951A1 (de) |
| WO (1) | WO2024251889A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119927951A (zh) * | 2025-02-21 | 2025-05-06 | 泰州君达新材料科技有限公司 | 一种三防布加工生产线用自动化夹持机械臂 |
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| DE3101705A1 (de) * | 1980-03-28 | 1982-01-28 | Veb Kombinat Textima, Ddr 9010 Karl-Marx-Stadt | Vorrichtung zum vereinzeln flexibler flaechengebilde |
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| IL66381A0 (en) * | 1982-07-23 | 1982-11-30 | Beta Eng & Dev Ltd | Automatic sewing apparatus |
| DE3628381A1 (de) * | 1986-08-21 | 1988-02-25 | Fraunhofer Ges Forschung | Sauggreifer (i) |
| CH680850A5 (de) * | 1986-12-03 | 1992-11-30 | Antogi Ag | |
| DE4229955C2 (de) * | 1992-09-08 | 1996-02-15 | Fraunhofer Ges Forschung | Vorrichtung zum Vereinzeln von gestapelten biegeschlaffen Teilen |
| DE102012019958A1 (de) * | 2012-10-09 | 2013-04-11 | Daimler Ag | Verfahren zur Herstellung eines Bauteils aus faserverstärktem Kunststoff und Vorrichtung zur Durchführung des Verfahrens |
| DE102017118946A1 (de) * | 2016-08-26 | 2018-03-01 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Verfahren zum Drapieren eines biegeschlaffen flächigen Materials |
| EP4412775B1 (de) * | 2021-10-04 | 2026-01-28 | BEUMER Group A/S | Sortiersystem mit hintereinandergeschalteten robotern, sowie verfahren |
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2023
- 2023-06-07 DE DE102023114951.2A patent/DE102023114951A1/de active Pending
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2024
- 2024-06-06 WO PCT/EP2024/065633 patent/WO2024251889A1/de not_active Ceased
- 2024-06-06 CN CN202480037987.6A patent/CN121620435A/zh active Pending
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| DE3101705A1 (de) * | 1980-03-28 | 1982-01-28 | Veb Kombinat Textima, Ddr 9010 Karl-Marx-Stadt | Vorrichtung zum vereinzeln flexibler flaechengebilde |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119927951A (zh) * | 2025-02-21 | 2025-05-06 | 泰州君达新材料科技有限公司 | 一种三防布加工生产线用自动化夹持机械臂 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN121620435A (zh) | 2026-03-06 |
| DE102023114951A1 (de) | 2024-12-12 |
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