Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
  • B65H29/24—Delivering or advancing articles from machines; Advancing articles to or into piles by air blast or suction apparatus
  • B65H29/241—Suction devices
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
  • B65H29/24—Delivering or advancing articles from machines; Advancing articles to or into piles by air blast or suction apparatus
  • B65H29/241—Suction devices
  • B65H29/243—Suction rollers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
  • B65H29/54—Article strippers, e.g. for stripping from advancing elements
  • B65H29/56—Article strippers, e.g. for stripping from advancing elements for stripping from elements or machines
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
  • B65H29/58—Article switches or diverters
  • B65H29/62—Article switches or diverters diverting faulty articles from the main streams
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H31/00—Pile receivers
  • B65H31/30—Arrangements for removing completed piles
  • B65H31/3036—Arrangements for removing completed piles by gripping the pile
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42C—BOOKBINDING
  • B42C19/00—Multi-step processes for making books
  • B42C19/06—Multi-step processes for making books starting with webs not provided for elsewhere
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2220/00—Function indicators
  • B65H2220/09—Function indicators indicating that several of an entity are present
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2301/00—Handling processes for sheets or webs
  • B65H2301/40—Type of handling process
  • B65H2301/42—Piling, depiling, handling piles
  • B65H2301/421—Forming a pile
  • B65H2301/4217—Forming multiple piles
  • B65H2301/42172—Forming multiple piles simultaneously
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2301/00—Handling processes for sheets or webs
  • B65H2301/40—Type of handling process
  • B65H2301/44—Moving, forwarding, guiding material
  • B65H2301/445—Moving, forwarding, guiding material stream of articles separated from each other
  • B65H2301/4451—Moving, forwarding, guiding material stream of articles separated from each other forming a stream or streams of separated articles
  • B65H2301/44512—Moving, forwarding, guiding material stream of articles separated from each other forming a stream or streams of separated articles forming parallel streams of separated articles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2301/00—Handling processes for sheets or webs
  • B65H2301/40—Type of handling process
  • B65H2301/44—Moving, forwarding, guiding material
  • B65H2301/447—Moving, forwarding, guiding material transferring material between transport devices
  • B65H2301/4473—Belts, endless moving elements on which the material is in surface contact
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2301/00—Handling processes for sheets or webs
  • B65H2301/40—Type of handling process
  • B65H2301/44—Moving, forwarding, guiding material
  • B65H2301/447—Moving, forwarding, guiding material transferring material between transport devices
  • B65H2301/4474—Pair of cooperating moving elements as rollers, belts forming nip into which material is transported
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2301/00—Handling processes for sheets or webs
  • B65H2301/40—Type of handling process
  • B65H2301/44—Moving, forwarding, guiding material
  • B65H2301/448—Diverting
  • B65H2301/4481—Stripping material from carrier web
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2406/00—Means using fluid
  • B65H2406/10—Means using fluid made only for exhausting gaseous medium
  • B65H2406/12—Means using fluid made only for exhausting gaseous medium producing gas blast
  • B65H2406/122—Nozzles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2406/00—Means using fluid
  • B65H2406/30—Suction means
  • B65H2406/31—Suction box; Suction chambers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2406/00—Means using fluid
  • B65H2406/30—Suction means
  • B65H2406/36—Means for producing, distributing or controlling suction
  • B65H2406/364—Means for producing, distributing or controlling suction simultaneously blowing and sucking
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2801/00—Application field
  • B65H2801/48—Bookbinding

Definitions

• the invention relates to a removal device for removing flat parts, in particular paper sheets, from a transport path, in particular a plant of the paper-processing industry, with a conveyor, which defines a relative to the transport path angled branch.
• Such a device is alternatively also referred to as a discharge device or sheet diverter and is preferably used in systems in which paper sheets are produced from a roll of paper by longitudinal and transverse cutting and accumulated in stacks or blocks, or in printing machines o. The like. For use. It is sometimes necessary, after cutting, so downstream of the cutting station or the cutting stations, if necessary, to remove individual flat parts or sheets from a series of consecutively transported individual flat parts or sheets. This is particularly necessary for flat parts or sheets that have a faulty pressure, damage, kinks or other errors.
• the removal device on a conveyor which defines a branch which is angled relative to the transport path to lead out the flat part to be removed from the transport path.
• the addressed transport path usually defines the process direction and thus forms the main transport path.
• this transport path can also be referred to as a first transport path, while the branch forms a second transport path leading away from this first transport path.
• DE 195 30 052 A shows a known device of the type mentioned above with two transport units, each having a belt drive. Further deflection belts are provided which cooperate with the belt drives and at least partially guided over a deflecting element in order to align the Auslenkriemen with the belt drive of one or the other transport unit.
• a sheet diverter for a printing press which has a deflecting element which is movable between a first position and a second position, wherein the deflecting element in the first position transporting a sheet along a first transport path allows and blocked along a relative to the first transport path angled second transport path and blocked in the second position, a transport of the sheet along the first transport path and deflects it to the second transport path.
• a disadvantage of the known sampling devices is that their installation requires more structural interventions, modifications and / or adjustments in a system to integrate the removal device functionally reliable in the entire system. Furthermore, it is disadvantageous in the known removal devices that their arrangement requires a relatively large amount of space. It is an object of the present invention to provide a removal device that can be arranged to save space, does not require significant structural intervention in a system and works reliably.
• a removal device for removing flat parts, in particular paper sheets, from a transport path, in particular a plant of the paper-processing industry, with a conveyor which defines a relative to the transport path branch, characterized in that the conveyor for arrangement above a Transport path formed and a suction device is provided for sucking a defective flat part of the transport path in the branch.
• the removal device according to the invention is designed for arrangement above a transport path, it can be mounted in a particularly space-saving manner.
• the only prerequisite for the assembly of the removal device according to the invention is that at the installation above a portion of the transport path in the system according to some free space is available.
• those sections are regularly along the transport path, in which the conveying device are provided only with funding, on the upper side of the flat parts are worn; This is regularly the case where only sub-bands are used to transport the flat parts, the upper strand is provided for supporting the flat parts, so top bands are not present and thus appropriate space is available.
• the removal device according to the invention that the removal of a flat part from the transport path into the branch takes place by suction, for which purpose a corresponding suction device is provided.
• the inventive use of a suction device which ensures that the flat part lifted from the transport path and - initially with the leading edge ahead - is pulled into the branch, can be implemented in a simple yet clever way, the arrangement of the conveyor above the transport path. Because of the suction engagement with the A further advantage of the solution according to the invention is that the incorporation of the removal device according to the invention substantially without any influence on other components in the Area of the transport path remains and thus constructive interventions, especially in the area of the transport path and the transport device provided there are not necessary. Therefore, the solution according to the invention is particularly suitable for retrofitting already existing systems.
• flat parts are to be understood as meaning, in particular, paper sheets of the paper-processing industry, but also other flat articles, such as film sections made of plastic, metal, nonwovens, paper or the like, but these are the ones in question here Flat parts basically not limited.
• the suction device should expediently be designed to pressurize the branch with negative pressure.
• the branch is inclined at an angle to the Erdhorizontalen upwards.
• the branch is formed as a pipe or shaft.
• the tube or the shaft preferably have a rectangular or slot-shaped cross-section, whose long side is aligned transversely to the transport path.
• the width of the branch should correspond approximately to the width of the transport path.
• a further preferred embodiment of the invention is characterized in that the suction device has a rotatably mounted roller which can be arranged substantially directly over the transport path and, for the generation of negative pressure on the lateral surface of the roller, over a first angular range which, viewed in the direction of rotation of the roller, begins at a location adjacent to the transport path, is formed.
• a roller is used to remove the flat part from the transport path upwards, in which passes due to the negative pressure, the flat part in adhesion to the lateral surface of the roller.
• the first angular range viewed in the direction of rotation of the roller, ends approximately at a position for discharging the flat part from the roller into the branch in order to ensure a smooth transition of the flat part from the roller into the branch.
• this transition can be supported by a compressed air device which generates overpressure on the lateral surface of the roller in a second angular range which, viewed in the direction of rotation of the roller, lies behind the first angular range.
• the second angular range should substantially follow the first angular range.
• the branch may also have a double-roller arrangement.
• tubular or shaft-shaped, branch provided and thereby the inlet of the branch substantially immediately adjacent to the roller and further arranged at a distance above the transport path can be arranged.
• the inlet of the branch is located adjacent to the point for dispensing a flat part from the roll.
• a further preferred embodiment of the invention is characterized in that a closure element is arranged at the inlet of the branch, which closes between an open position in which it completely opens the inlet of the branch, and a closed position in which it completely closes the inlet of the branch. is movably mounted, and a drive for adjusting the closure element is provided.
• the removal device can be very quickly activated or deactivated and, if necessary, also control and adjust the suction strength very quickly.
• This version therefore offers a very short reaction time.
• the execution makes use of the knowledge that the operation of the suction device is sometimes too slow to achieve correspondingly fast response times, which in contrast is readily possible with the control of a closure element.
• a fast reaction time is particularly important in the detection of faulty flat parts, in order to remove them as soon as possible from the transport path and thus from the process.
• a control device which controls the opening and closing of the branch drive for the closure element in response to a signal indicating the presence of a to be taken, preferably faulty, flat part accordingly.
• the suction device for generating be formed or adjusted a substantially constant negative pressure.
• such a suction device may preferably be provided and designed to generate negative pressure in the interior of a particular tubular or shaft-shaped branch and / or on the outer or circumferential surface of a roller.
• closure element as between the open position and the closed position substantially linearly movably mounted slide whose drive is preferably a linear drive, or be designed as between the open position and the closed position rotatably mounted rotary valve.
• a suction device which can be activated in order to selectively generate no negative pressure or negative pressure, preferably of variable intensity, in particular for activating and deactivating the removal device.
• a control device should be provided, which controls the suction device in response to a signal indicating the presence of a to be taken, in particular faulty, flat part accordingly.
• a detection device should be arranged upstream of the branch, which is provided for detecting a to be taken, in particular faulty, flat part and connected to the control device.
• Fig. 1 by way of example a schematic side view of a plant for book block production
• Fig. 2 is a schematic plan view of the system of Fig. 1; 3 shows schematically a partially sectioned, enlarged side view of a sheet switch provided in the appendix of FIGS. 1 and 2 according to a first preferred embodiment of the invention;
• FIG. 4 shows schematically a partially sectioned, enlarged side view of a sheet switch provided in the appendix of FIGS. 1 and 2 according to a second preferred embodiment of the invention.
• Fig. 5 schematically shows a partially sectioned, enlarged side view of a provided in the Appendix of Figures 1 and 2 sheet switch according to a third preferred embodiment of the invention.
• FIGS. 1 and 2 initially contains a sheet-web delivery station 2 which has a frame 4 on which two rollers 6, 8 are rotatably mounted in the exemplary embodiment shown.
• Each roller 6, 8 consists of a wound continuous sheet web, preferably made of paper, which is unwound for processing in the illustrated system of the corresponding role.
• only one role during operation is used, while the other role can be interchanged.
• the web running direction takes place from left to right, which is also indicated by the arrow A.
• the arrow A denotes the transport direction, which simultaneously corresponds to the process direction.
• gekennzeich- is net, in the illustrated embodiment, a feed station 16, which supports the transport of the printed sheet web 14 in the web running direction according to arrow A.
• a refractive station 18 Subordinate to the feed station 16 in the web running direction is in the illustrated embodiment, a refractive station 18, in which the sheet web 14 is broken on both sides and thus in both directions to eliminate any possibly caused by the printing process ripple.
• the system has a longitudinal cutting station 20 which contains a plurality of transverse to the web running direction adjacent and thereby spaced apart blades 22, as shown in FIG. 2 can be seen schematically.
• the knives 22 are preferably designed as rotary drivable circular knives whose respective axis of rotation is oriented transversely to the web running direction. Further, the blades 22 are each positioned transversely positionable relative to the web running direction of the sheet web 14, whereby the distance between two adjacent blades 22 from each other for the purpose of format adjustment is variable.
• the printed sheet web 14 is cut by the knives 22 in the web running direction according to arrow A by a number of longitudinal sections into a plurality of respective partial webs corresponding to a desired width of a book block side, which is not recognizable in the figures. Due to the variable positioning of the individual knives 22 transversely to the web running direction of the sheet 14, the distance between two adjacent knives 22 can be adjusted to the desired width of a book block page, resulting in a high format flexibility.
• the width of the sheet web 14 is a multiple of the width of one side of the book block to be produced with the machine, a corresponding plurality of book blocks can be produced simultaneously in parallel, so that a corresponding number of parallel, in the conveying direction according to arrow A running and transverse to the conveying direction adjacent Transport paths is defined, which are not shown in the figures.
• Downstream of the longitudinal cutting station 20 in the web running direction is a transverse cutting station 24, in which the partial webs cut longitudinally by the preceding slitting station 20 are simultaneously cut transversely to the conveying direction into sheets, each of which forms a book block side for a book to be produced from the sheets.
• the cross-cutting station 24 has a cylindrical knife drum extending over the entire width of the sheet web 14 with a wave-shaped knife disposed thereon inclined with respect to the axis of rotation of the knife drum, which is not shown in detail in the figures.
• a signature soft 26 which is followed by a weft tape 28 which is led out of the system transversely to the web running direction, as shown in FIG.
• the curved switch 26 is shown in Figures 1 and 2 as all assemblies and stations of the system shown in Figures 1 and 2 by way of example only very schematically, contrast, however, in three different preferred embodiments in Figures 3 to 5 shown in detail and is described below with reference to Fig. 3 to 5 described in more detail.
• inferior sheets which in particular have faulty printed images, connecting, spreading or joints or other irregularities or even damage, or empty sheets and removed via the weft tape 28 from the system.
• a sensor which determines the number of sheets passing and determines whether the determined number of sheets corresponds to the number of pages formed by the sheets for the production of the book block, as well as to be discarded Identified sheets and controls the curved switch 26 accordingly via a control device, also not shown.
• a conveying device 30 which is provided as an inlet assembly for a collecting station 32 which adjoins downstream.
• the conveyor device 30 is preferably provided with deceleration means for braking the sheets in order to prevent the To transfer sheets in the collecting station 32, wherein the braking operation in particular leads to an overlap of the sheets.
• the collecting station 32 Downstream of the conveying device 30, the collecting station 32, which contains a plurality of adjacent compartments 34, which are schematically visible in FIG.
• These compartments 34 are laterally bounded by side walls unspecified in the figures, which are adjustable transversely to the web running direction according to arrow A, so that the width of the individual compartments 34 can be adapted to the width of the sheets cut from the individual transport paths or partial webs.
• the side walls of the compartments 34 should be adjusted according to the blades 22 of the slitting station 20 transversely to the web running direction, so as to ensure that the side walls of the compartments 34 in the collecting station 32 occupy the same transverse position as the corresponding blades 22 of the slitting station 20.
• each of the compartments 34 a stack of superimposed sheets is set up in the collecting station 32, which upon completion forms the desired book block, the compartments 34 being arranged in a number corresponding to the number of sub-paths or transport paths, thereby forming a corresponding plurality of parallel ones and book blocks forming sheet stacks are accumulated.
• pliers conveyors are provided, wherein preferably each of the compartments 34 is associated with a pliers conveyor.
• the forceps conveyors serve to remove a stack accumulated in a finished book block from the respective compartment 34 by clampingly engaging a stack embodying a finished book block between the forceps heads of the forceps conveyor.
• FIGs 1 and 2 adjacent to the downstream side of the collecting station 32, still schematically disclose a transverse conveyor 36 onto which the book blocks, also not shown in the figures, are transferred out of the collecting station 32 by means of the mentioned gripper conveyors.
• the book blocks by means of the cross conveyor 36 of the in Figures 1 and 2 schematically shown system transported away.
• the transport or conveying direction of the transverse conveyor 36 is oriented transversely to the process direction, as the arrow B can be seen in Fig. 2.
• a lateral removal of the book blocks using the cross conveyor 36 takes place.
• the transverse conveyor 36 preferably has a continuous in the direction of arrow B circulating conveyor belt, which is not designated in the figures.
• the cross conveyor 36 leads to a downstream bookbinding machine and / or a downstream packaging machine, which are not shown in the figures. In the packaging machine, the stacks are then wrapped with packaging material and / or packaged in larger units.
• FIG. 3 the schematic structure of the curved switch 26 according to a first preferred embodiment is shown in detail.
• the sheet diverter 26 is disposed above the conveyor 30, of the in Fig. 3 sections, an endlessly circulating conveyor belt 40 and pulleys 41, 42 for deflecting the conveyor belt 40 and support rollers 44 are shown on which the between the two guide rollers 41, 42 defined upper run 40a of the conveyor belt 40 runs along.
• the upper run 40a of the conveyor belt 40 serves to support the cut of the slitting station 20 and the cross cutting station 24 on format sheets, of which in Fig. 3 by way of example an arc is shown and designated by the reference numeral "46".
• the conveyor device 30 further comprises a drive, not shown, which sets the conveyor belt 40 in motion, that moves its upper run 40a in the direction of the arrow A, which identifies the transport or web running direction, which at the same time the process direction of the in the Figures 1 and 2 corresponds schematically illustrated system.
• the conveyor belt 40 is used as a lower belt, while at least in the region depicted by FIG. 3 the conveying device 30 has no upper belts.
• This unused space is used in the illustrated embodiment for the arrangement of the curved switch 26, which is thus positioned directly above the upper run 40a of the conveyor belt 40, as shown in FIG. 3 reveals.
• the curved switch 26 has a frame 48, which is at least partially designed as a housing in particular for receiving electrical connections, control devices and various units.
• the frame 48 is attached to a carrier, not shown.
• the frame 48 is mounted vertically adjustable on the carrier not shown in the figures and possibly additionally also the carrier in the web running direction according to arrow A and possibly even transversely to this movable be arranged.
• a substantially vertical shaft 50 is provided, which has an inlet 50a at its end adjacent to the conveyor belt 40 and at its opposite end a funnel-shaped widening outlet 50b.
• the shaft 50 forms a branch for the removal and discharge of sheets to be separated out and subsequent transfer to the weft tape 28 (FIG. 2), for which purpose the shaft 50 is correspondingly coupled to the weft tape 28.
• the shaft 50 At least in the region of its inlet 50a, the shaft 50 preferably has a rectangular or slot-shaped cross section, which extends in particular over the width of the conveyor belt 40 or the transport path.
• the inlet 50a of the shaft 50 is arranged substantially directly above the upper run 40a of the conveyor belt 40, the distance from the conveyor belt 40 being as minimal as possible and thus the inlet 50a of the shaft 50 being as close as possible to the sheets should.
• a suction device is provided, which is connected to the shaft 50 in such a way that a suction air flow leading from its inlet 50a to its outlet 50b is produced in the shaft 50.
• the reference numeral "52" schematically shows a part of the suction device.
• the inlet 50a of the shaft 50 takes over the function of a suction nozzle and may alternatively be referred to as such.
• a closure element 54 is provided in the illustrated embodiment, which between an open position in which it completely opens the inlet 50a of the shaft 50, and a closed position in which the inlet 50a and thus the shaft 50 completely closes, is movable.
• the curved diverter 26 has a drive 56, lead from the electrical connection and control cable 58 to the frame 48.
• the closure member 54 is formed as a linearly movable slide and arranged on the underside of the frame 48 and the associated drive 56 designed as a linear electric motor.
• the closure element 54 embodied as a linearly moveable slide consists essentially of a plate which is oriented substantially horizontally and can be displaced in the horizontal direction.
• the closure member 54 is shown in its closed position in which it completely closes the inlet 50a of the shaft 50.
• the closure element 54 is to be displaced to the right by the drive 56 according to FIG. 3 until it releases the inlet 50a of the shaft 50.
• the curved switch 26 is driven accordingly and thus activated or deactivated.
• the control of the drive 56 for the movement of the closure element 54 is effected by the already mentioned above control device, which is not shown in the figures.
• the suction power or suction of the suction device 52 may be set constant, since the activation and deactivation of the Suction effect and thus the curved switch 26 takes place by opening and closing the closure element 54, which can be carried out in a very short reaction time.
• suction power of the suction device 52 in particular by means of the mentioned control device.
• auxiliary or conveying means may be provided immediately upstream of the inlet 50a as needed.
• auxiliary or conveying means may for example be designed so that they support the lifting of the bowzinein 46 by appropriate action on its underside, for example by blowing air from below.
• these auxiliary or conveying means may also be designed to apply a holding force from above to the bow 46 to be separated in order to pull it in the direction of the inlet 50a, for which purpose in particular the use of a correspondingly above the upper run 40a of the conveyor belt 40 arranged suction conveyor offers.
• the aforementioned auxiliary or conveying means are not shown in the figures. Conveniently, the activation of such auxiliary or conveying means takes place simultaneously with the activation of the suction in the shaft 50 by the mentioned control device.
• FIG. 4 the schematic structure of a curved switch 26 'according to a second preferred embodiment is shown in detail, wherein these 3 differs essentially from the first preferred embodiment according to FIG. 3 in that a transport roller arrangement 60 is located between the upper run 40a of the conveyor belt 40 and the shaft 50.
• a transport roller arrangement 60 is located between the upper run 40a of the conveyor belt 40 and the shaft 50.
• the transport roller arrangement 60 has a roller 62, which forms a cylindrical, sleeve-shaped component and is arranged coaxially on a stationary, cylindrical bearing body and rotatably mounted.
• a drive 66 is provided which has a drive motor 68.
• the drive motor 68 which preferably consists of an electric motor, drives in the illustrated embodiment, a pulley 70, via which an endless belt 72 is guided, which also runs over a larger portion of the circumference 74a of a Riemenantriebsflansches 74.
• the Riemenantriebsflansch 74 is non-rotatably connected to the roller 62 or an integral part of the roller 62 and forms in the illustrated embodiment, a coaxial with the roller 62 and the bearing body 64 arranged ring whose diameter in the illustrated embodiment is greater than the roller 62 in the region of their Mantel- or Surface 62a is.
• roller 62 and stationary bearing body 64 is made such that on the surface 62a of the roller 62 optionally by means of suction air, a negative pressure or by means of compressed air, an overpressure can be generated.
• the roller 62 is provided over its axial width and over its circumference with a plurality of in FIG. 4 in detail not recognizable through holes, which are open at the shell or surface 62 a of the roller 62.
• these through bores lead to the in unspecified in FIG. NEN face of the roller 62 provided there openings, which are arranged and formed so that they communicate during the rotation of the roller 62 continuously or discontinuously with openings which provided in the unspecified in Fig.
• the roller 62 is arranged horizontally and thus rotatably mounted about a horizontally extending axis of rotation not designated in FIG. 4.
• the roller 62 is arranged above the conveyor belt 40 so that the lowest point of the lateral surface 62a is located just above the upper run 40a of the conveyor belt 40.
• a gap is formed, which is not visible in Fig. 4 and also not designated, but has such a minimum thickness in the vertical direction that on the upper run 40a of the conveyor belt 40 lying sheet 46 can be easily transported under the roller 62 in the direction of arrow A. This point is marked in Fig. 4 with "X".
• a sector begins which defines a portion of the roller 62 and the cylindrical bearing body 64 and extends in an anti-clockwise direction over an angular range indicated by "a" in FIG. Accordingly, this sector of two radii r- ⁇ and r 2 is limited, of which a radius r- ⁇ to the aforementioned point X and the second radius r 2 to a location y adjacent to the free end 80a of a baffle 80th which leads obliquely upwards to the inlet 50a of a shaft 50.
• the sector with the angular range ⁇ is adjoined by a second sector, which is defined by an angular range which is denoted by " ⁇ " in FIG. 4 and by the radius r 2 and a further radius r 3 is limited.
• the bearing body 64 In the angular range ⁇ of the bearing body 64 is provided with suction channels, which are connected to an external Saugluftquelle not shown. This has the consequence that on the lateral surface 62a of the roller 62 in the angular range ⁇ creates a negative pressure. If the aforementioned external suction air source is activated, this negative pressure causes a sheet 46, starting with its leading edge portion 46 a, sucked against the lateral surface 62 a of the roller 62 and thus lifted off the conveyor belt 40, while the roller 62 in the direction of arrow B against the Rotates clockwise. In this way, the sheet 46 is transported from the point X, where it is lifted from the conveyor belt 40, by the roller 62 to the point Y, while it adheres to the lateral surface 62 a of the roller 62.
• the bearing body 64 is provided with compressed air channels which are connected to an external compressed air source, likewise not shown in FIG. 4.
• an overpressure is generated in the angular range ⁇ on the lateral surface 62a of the roller 62, which leads to the sheet 46 still adhering to the lateral surface 62a of the roller 62, again beginning here with its leading edge portion 46a, after reaching the point Y is selectively released from the lateral surface 62a of the roller 62.
• the sheet 46 passes first with its leading edge portion 46a and then with its remaining portion on the top 80b of the baffle 80.
• the arc 46 starting with its leading edge portion 46a of the lateral surface 62a of Roller 62 selectively blown toward the top 80 b of the baffle 80.
• the sheet 46 also passes first with its leading edge portion 46a under the Influence of the prevailing at the inlet 50 a of the shaft 50 negative pressure, whereby the sheet 46 is drawn from the baffle 80 into the slot 50.
• a compressed air chamber 90 can be arranged, which is not shown in FIG , external compressed air source is supplied.
• the compressed air directed upward toward the roller 62, the sheet 46, starting with its leading edge section 46a, is lifted off the conveyor belt 40 and pressed against the lateral surface 62a of the roller 62.
• the conveyor belt 40 should be, for example, perforated accordingly.
• the inlet 50a of the well 50 is not as in the first preferred embodiment described with reference to FIG adjacent to the upper run 40a of the conveyor belt 40 at a location similar to the point X of Fig. 4, but adjacent to the point Y and thus arranged at a distance above the conveyor belt 40.
• FIG. 5 shows the schematic structure of a curved switch 26 "according to a third preferred embodiment.
• This third preferred embodiment differs from the second preferred embodiment according to FIG. 4 only in that, instead of a suction-aired shaft, a double-roller arrangement 100 is provided to remove a sheet 46 drawn from the roller 62 by the conveyor belt 40 via the aforementioned weft belt 28 , which in Fig. 5 only sees is shown as a rectangular block.
• the double roller assembly 100 also referred to as Nippwalzen arrangement, in the illustrated embodiment, an upper first roller 101 and a lower second roller 102, between which a picked up by the roller 62 and then discharged onto the guide plate 80 sheet 46 is pulled.
• the double roller assembly 100 takes over the function of the branch for transporting a sheet 46 in the direction of the weft tape 28.
• only the transport roller assembly 60 is used as a suction device to draw a sheet 46 from the conveyor belt 40 into the sheet switch 26 "by applying suction.
• the diverter 26 in its first preferred embodiment according to FIG. 3 can be designed such that the shaft 50 extends with its inlet 50a over the entire width of all transport paths and thus the entire web or each transport path has its own and separately controlled diverter 26 or at least one separate shaft with an associated and separately controlled suction device is assigned.
• the third preferred embodiment of the diverter 26 "according to FIG. 5 can be configured so that the transport roller assembly 60, the compressed air chamber 90 and the double roller assembly 100 extend over the entire width of all transport paths and thus the entire web or each transport path own and separately controlled sheet diverter 26 "or at least a separate transport roller assembly, a separate compressed air chamber and a separate double roller assembly is assigned.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Delivering By Means Of Belts And Rollers (AREA)
• Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)

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• 2012
  • 2012-04-25 DE DE102012206848.1A patent/DE102012206848B4/de not_active Expired - Fee Related
• 2013
  • 2013-04-25 WO PCT/EP2013/058631 patent/WO2013160402A1/fr not_active Ceased

Patent Citations (3)

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