EP2191904A2 - Procédé et dispositif destinés à l'application d'un mélange à plusieurs composants - Google Patents

Procédé et dispositif destinés à l'application d'un mélange à plusieurs composants Download PDF

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Publication number
EP2191904A2
EP2191904A2 EP09001831A EP09001831A EP2191904A2 EP 2191904 A2 EP2191904 A2 EP 2191904A2 EP 09001831 A EP09001831 A EP 09001831A EP 09001831 A EP09001831 A EP 09001831A EP 2191904 A2 EP2191904 A2 EP 2191904A2
Authority
EP
European Patent Office
Prior art keywords
spray head
mixing device
component
mixing
mixture
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.)
Withdrawn
Application number
EP09001831A
Other languages
German (de)
English (en)
Inventor
Simeon Christl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sturm Maschinenbau GmbH
Original Assignee
Sturm Maschinenbau GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sturm Maschinenbau GmbH filed Critical Sturm Maschinenbau GmbH
Priority to EP09001831A priority Critical patent/EP2191904A2/fr
Publication of EP2191904A2 publication Critical patent/EP2191904A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2489—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device
    • B05B7/2497—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device several liquids from different sources being supplied to the discharge device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/14—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet
    • B05B12/1418—Arrangements for controlling delivery; Arrangements for controlling the spray area for supplying a selected one of a plurality of liquids or other fluent materials or several in selected proportions to a spray apparatus, e.g. to a single spray outlet for supplying several liquids or other fluent materials in selected proportions to a single spray outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/04—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
    • B05B13/0431—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with spray heads moved by robots or articulated arms, e.g. for applying liquid or other fluent material to three-dimensional [3D] surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/26—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device
    • B05B7/28—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid
    • B05B7/32—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device in which one liquid or other fluent material is fed or drawn through an orifice into a stream of a carrying fluid the fed liquid or other fluent material being under pressure

Definitions

  • the invention relates to a device for applying a multi-component mixture, in particular a multi-component adhesive, to a workpiece.
  • the invention further relates to a method for applying a multi-component mixture, in particular a multi-component adhesive, to a workpiece.
  • Multi-component blends such as multi-component adhesives, paints, or sealants, are well known and include several separate components that react with one another when blended.
  • Multi-component adhesives usually have two components, wherein a first component is referred to as an adhesive and a second component as a curing agent. In principle, however, multicomponent mixtures may also have more than two, for example three or four components.
  • a problem with the handling of such multi-component mixtures, in particular multi-component adhesives, is that the mixture begins to react or harden as soon as the components come into contact with one another.
  • a common approach for applying a multi-component adhesive is to produce a predetermined amount of the adhesive by mixing the components in a reservoir and then applying the adhesive as quickly as possible to the workpiece.
  • the disadvantage here is that not or not processed fast enough adhesive components can cure in the reservoir.
  • a method and an apparatus for dispensing a two-component mixture is known from US 5,156,074 DE 693 19 230 T2 known.
  • the execution of a rinsing process with one of the components is provided.
  • a device for manually applying a multi-component adhesive to a workpiece is known from the German utility model 71 29 954 U1 known.
  • the device comprises a mouthpiece to which at least two containers each filled with an adhesive component can be connected. By pressing the container, the adhesive components pass into a mixing zone formed in the mouthpiece, in which they are mixed together. The adhesive mixture is applied to the workpiece to be bonded via an outlet opening. With this device, however, neither an accurate dosage nor a particularly good mixing of the adhesive components is possible.
  • the object of the invention is to specify a device and a method for the precise, efficient and resource-saving application of a multicomponent mixture to a workpiece.
  • the device has a first conveying device for conveying a first component, a second conveying device for conveying a second component, a control device for controlling the delivery quantities of the first and second conveying device and a mixing device which is connected to the first and second conveying device.
  • the mixing device the multicomponent mixture can be produced by mixing the at least two components.
  • the device further comprises a spray head separate from the mixer for spraying the multicomponent mixture onto a workpiece and a hose-like conduit connected for directing the multicomponent mixture to an exit side of the mixer and connecting it to the swivel head.
  • the method according to the invention comprises the following method steps: a first component is conveyed by means of a first conveyor; a second component is conveyed by means of a second conveyor; the first and second components are mixed in a mixer to produce the multicomponent mixture; the multicomponent mixture is passed via a hose-like line from the mixing device to a spray head; the multi-component mixture is sprayed onto a workpiece by means of the spray head.
  • the device according to the invention and the method according to the invention are in particular intended for use in an automatic adhesive application system in which the metering of the components and the application of the mixture are carried out automatically, controlled by a controller.
  • a basic idea of the invention can be seen in applying the multicomponent mixture to a workpiece directly after mixing the components. This immediate further processing of the freshly mixed product prevents more product from being produced than is eventually consumed. So it is always mixed only the required amount. This also avoids that a considerable amount of the mixture formed by mixing the components cures in the device.
  • a hose-like line can be understood as any line for conveying a medium.
  • the hose-like conduit is preferably an at least partially flexible hose, for example made of a plastic material.
  • the hose-like line represents a celevoluminges component for overcoming the distance between the mixing device and the spray head.
  • a particularly flexible applicability of the device according to the invention results from the fact that the spray head is arranged spatially separated from the conveyors and the mixing device.
  • the conveyors can be made relatively bulky.
  • the spray head which is connected via the hose-like line to the mixing device, however, can be made comparatively small, so that it can also be used in less accessible places.
  • the spray head can be operated manually and as a spray gun with a control element, such as an operating lever, be formed.
  • the spray head can also be operated by a controller.
  • the two components and the multicomponent mixture are continuously conveyed by the conveyors through the mixing device, the hose-like line and the spray head during the operation of the device.
  • no reservoir is provided for the multi-component mixture.
  • a handling device in particular an industrial robot, which has at least one pivotable relative to a base pivot arm and that the conveyors, the mixing device and / or the spray head is arranged on the pivot arm.
  • the handling device preferably has at least three axes of rotation in order to be able to reach arbitrary spatial points.
  • the handling device has at least two pivot arms, which are rotatably connected to each other.
  • the conveyors, the static mixing device and the spray head can basically be arranged on the same pivot arm.
  • the conveyors and the spray head are arranged on different pivot arms of the handling device. It is particularly preferred if the conveyors are arranged on a first pivot arm and the spray head on a second pivot arm, which is preferably articulated on the first arm, is arranged. Overall, so the mix can be very be produced continuously close to the point of consumption, which is material-saving and low-maintenance.
  • a further embodiment of the device according to the invention is given by the fact that the spray head has a compressed air connection for atomizing the multi-component mixture.
  • the sputtering allows contactless and particularly uniform and thin application of the multicomponent mixture to the workpiece.
  • control device is arranged to control a compressed air supply to the spray head. It is particularly preferred in this context that upon activation of the spray head, either by manual or automatic actuation, substantially simultaneously the conveyors for conveying the components are set in motion and tuned to the compressed air supply is turned on or activated.
  • the controller thus controls not only the conveyors, but also the compressed air supply to the spray head. In connection with the handling device, it is furthermore preferred that this also be controllable by means of the control device.
  • a preferred further development of the invention is characterized in that a first coupling element is arranged between the mixing device and the hose-like line, that a second coupling element is arranged between the hose-like line and the spray head and that the hose-like line is detachably fastened to the mixing device and the spray head ,
  • the coupling elements arranged between the mixing device and spray head can be replaced in a particularly simple manner.
  • This simple interchangeability of the hose is a particular advantage of the device.
  • the hose-like line can be a simple and inexpensive to produce element. If adhesive residues remain in the line and harden, then this is easily and without major financial losses interchangeable.
  • the tubular conduit preferably has a length of up to a few meters, in particular 0.5 to 2 meters and a diameter in the millimeter range, so that the volume of the hose is comparatively small.
  • the delivery devices are designed as screw pumps, in particular as progressing cavity pumps.
  • the screw pumps also called screw conveyors, allow a continuous conveying of both components to the mixing device. Eccentric screw pumps are particularly suitable for precise dosing, even the smallest dosing quantities.
  • progressing cavity pumps are suitable for viscous and highly viscous media and are particularly robust due to fewer moving parts.
  • the use of screw pumps for metering the components also allows automated operation of the device and allows material-friendly conveying.
  • the mixing device can have a driven stirrer.
  • the mixing device has a static mixer with at least one internal, fixed mixing element.
  • the internal mixing element causes the component streams to be mixed as they pass through the mixer.
  • a plurality of, in particular obliquely arranged, baffles are preferably provided in the mixing device.
  • the static mixer has no moving parts and is therefore very robust.
  • a particularly effective mixing of the components in a small space can be achieved by means of a large number of deflections in the mixer.
  • the mixing device can thus be manufactured as a simple and inexpensive part to be manufactured, which allows a one-way use and frequent replacement.
  • the mixing device may be made of metal or plastic and may be about a one-piece injection molded part.
  • a further development of the method according to the invention consists in that the multicomponent mixture is conveyed through the mixing device and the hose-like line by a pressure built up by the conveying devices.
  • the entire device ie in particular the conveying devices, the mixing device and the tube-like line, is completely filled with the components or the mixture.
  • no gas spaces are provided in the device.
  • the conveyors can convey the material through the entire device to the spray head in a precisely metered manner.
  • the components or the multicomponent mixture are conveyed by means of the conveyors alone through the mixing device and the tubular conduit and applied to the workpiece via the spray head. Additional conveyors for conveying the already mixed product are therefore not required.
  • a possible embodiment of the method is that the mixing device is rinsed with one of the components and / or with a rinsing liquid.
  • the rinsing process allows residues of the multicomponent mixture, which remain in the mixing device, to be discharged.
  • a solvent as a rinsing liquid already cured mixtures can be removed.
  • the mixing device can be rinsed with a rinsing liquid and the spray head with compressed air.
  • the mixing device designed as a disposable part can also be exchanged with the line. This virtually eliminates the use of solvents.
  • Fig. 1 shows a device 10 for applying a multi-component mixture to a workpiece.
  • the device 10 has a first conveyor 12 for conveying a first component and a second conveyor 14 for conveying a second component.
  • further conveying devices for conveying further components can be provided.
  • the conveyors 12, 14 are designed as progressing cavity pumps.
  • the first conveyor 12 is connected via a first supply line 23 to a reservoir 22.
  • a first component such as a hardener
  • the second conveyor 14 is connected via a second feed line 25 to a second reservoir 24, which contains a second component, for example an adhesive.
  • a mixing device 20 Downstream of the two conveyors 12, 14, a mixing device 20 is arranged with two input-side terminals, to which the conveyors are connected.
  • the mixing device 20 is designed as a static mixing device. It comprises a mixing head, in which the two components are brought together, and a static mixer, which also referred to as static mixing tube can be. In the static mixer, a repeated deflection of the mixture, whereby a good mixing of the components is achieved.
  • the mixture is passed through an approximately 2 m long hose-like line 30 to a spray head 40.
  • the spray head 40 By means of the spray head 40, the mixture is finely atomized and applied to a workpiece.
  • the spray head 40 is connected via a compressed air hose 60 to a compressed air system.
  • the multicomponent mixture produced by mixing the components is thus applied directly to the workpiece without intermediate storage.
  • the spray head 40 is designed as a remote-controlled element in the manner of a spray gun.
  • the hose-like line 30, which is a plastic hose in the illustrated embodiment, is connected to the mixing device 20 via a first coupling element 32.
  • a second coupling element 34 By means of a second coupling element 34, the tubular conduit 30 is releasably attached to the spray head 40. In the case of hardening of material in the hose, this can thus be easily released and replaced by the mixing device 20 and the spray head 40.
  • the device 10 has a handling device 50, for example an industrial robot.
  • the handling device 50 comprises a base 52 which may be fixedly mounted on a ground surface.
  • a first pivot arm 54 is rotatably mounted, preferably about a vertical and a horizontal axis.
  • a second pivot arm 56 is pivotally coupled to the first pivot arm 54.
  • the conveyors 12, 14 are fixedly connected to the pivot arm 56 so that they can be moved together with the pivot arm 56.
  • the conveyors 12, 14 mounted on a plate-shaped member 58 which is fixed to the second pivot arm 56.
  • the spray head 40 is rotatably mounted on the second pivot arm 56.
  • the spray head 40 is arranged detached from the handling device 50 or at a further pivot arm of the handling device 50.
  • the components are mixed in a defined volume ratio.
  • a control device 28 set the respective metered quantities by controlling the separate drives of the first and second conveyor 12, 14.
  • the control device 28 is further configured to control the compressed air supply to the spray head 40.
  • both the conveyors 12, 14 and the compressed air supply are switched on or activated in a coordinated manner.
  • the handling device 50 may additionally be provided to control the handling device 50 by means of the control device 28.
  • a multicomponent mixture in particular a multi-component adhesive
  • the device according to the invention is particularly suitable for use in automatic adhesive application systems.

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  • Engineering & Computer Science (AREA)
  • Robotics (AREA)
  • Coating Apparatus (AREA)
  • Nozzles (AREA)
EP09001831A 2008-12-01 2009-02-10 Procédé et dispositif destinés à l'application d'un mélange à plusieurs composants Withdrawn EP2191904A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09001831A EP2191904A2 (fr) 2008-12-01 2009-02-10 Procédé et dispositif destinés à l'application d'un mélange à plusieurs composants

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP08020858 2008-12-01
EP09001831A EP2191904A2 (fr) 2008-12-01 2009-02-10 Procédé et dispositif destinés à l'application d'un mélange à plusieurs composants

Publications (1)

Publication Number Publication Date
EP2191904A2 true EP2191904A2 (fr) 2010-06-02

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EP09001831A Withdrawn EP2191904A2 (fr) 2008-12-01 2009-02-10 Procédé et dispositif destinés à l'application d'un mélange à plusieurs composants

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EP (1) EP2191904A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018050482A1 (fr) * 2016-09-13 2018-03-22 Chemetall Gmbh Dispositif et procédé de dosage dynamique de matières d'étanchéité
CN109002895A (zh) * 2018-07-17 2018-12-14 深圳市雷赛控制技术有限公司 一种桌面点胶示教方法及装置
CN113526012A (zh) * 2021-07-23 2021-10-22 南京超亿智能科技有限公司 一种机械手自动化送料机构
CN114603568A (zh) * 2020-12-08 2022-06-10 广东博智林机器人有限公司 机械臂装置及涂敷机器人

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69114163T2 (de) 1990-03-28 1996-04-04 British United Shoe Machinery Handhabung eines Mehrkomponentenklebers.
DE69319230T2 (de) 1992-03-17 1998-10-22 Nordson Corp Zwei komponente abgabe system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69114163T2 (de) 1990-03-28 1996-04-04 British United Shoe Machinery Handhabung eines Mehrkomponentenklebers.
DE69319230T2 (de) 1992-03-17 1998-10-22 Nordson Corp Zwei komponente abgabe system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018050482A1 (fr) * 2016-09-13 2018-03-22 Chemetall Gmbh Dispositif et procédé de dosage dynamique de matières d'étanchéité
CN109789436A (zh) * 2016-09-13 2019-05-21 凯密特尔有限责任公司 用于密封材料的动态配量的设备和方法
CN109789436B (zh) * 2016-09-13 2021-07-09 凯密特尔有限责任公司 用于密封材料的动态配量的设备和方法
US11059070B2 (en) 2016-09-13 2021-07-13 Chemetall Gmbh Device and method for dynamic metering of sealing compounds
CN109002895A (zh) * 2018-07-17 2018-12-14 深圳市雷赛控制技术有限公司 一种桌面点胶示教方法及装置
CN109002895B (zh) * 2018-07-17 2021-01-12 深圳市雷赛控制技术有限公司 一种桌面点胶示教方法及装置
CN114603568A (zh) * 2020-12-08 2022-06-10 广东博智林机器人有限公司 机械臂装置及涂敷机器人
CN113526012A (zh) * 2021-07-23 2021-10-22 南京超亿智能科技有限公司 一种机械手自动化送料机构

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