EP0166340A2 - Dispositif de préhension d'une pièce flexible plane à partir d'un support - Google Patents

Dispositif de préhension d'une pièce flexible plane à partir d'un support Download PDF

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Publication number
EP0166340A2
EP0166340A2 EP85107436A EP85107436A EP0166340A2 EP 0166340 A2 EP0166340 A2 EP 0166340A2 EP 85107436 A EP85107436 A EP 85107436A EP 85107436 A EP85107436 A EP 85107436A EP 0166340 A2 EP0166340 A2 EP 0166340A2
Authority
EP
European Patent Office
Prior art keywords
needle
workpiece
movement
support surface
opening
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.)
Granted
Application number
EP85107436A
Other languages
German (de)
English (en)
Other versions
EP0166340A3 (en
EP0166340B1 (fr
Inventor
E.J. Van Der Weide
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.)
Beisler GmbH
Original Assignee
Beisler 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 Beisler GmbH filed Critical Beisler GmbH
Publication of EP0166340A2 publication Critical patent/EP0166340A2/fr
Publication of EP0166340A3 publication Critical patent/EP0166340A3/de
Application granted granted Critical
Publication of EP0166340B1 publication Critical patent/EP0166340B1/fr
Expired legal-status Critical Current

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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
    • B65H3/00—Separating articles from piles
    • B65H3/22—Separating articles from piles by needles or the like engaging the articles

Definitions

  • the invention relates to a device for receiving a flexible flat workpiece, in particular a fabric part from a base, comprising a holder for at least one needle, which is by means of a drive device between a rest position in which the needle tip is above a support surface of the workpiece to be held on the workpiece Bracket is located, and a working position is adjustable, in which the needle at least partially protrudes downward through an opening in the support surface.
  • the invention has for its object to provide a device of the type mentioned, with which it is possible to automatically remove the top workpiece from a workpiece stack.
  • the needle only sticks superficially into the workpiece to be picked up, then runs parallel to the workpiece plane and comes out of the workpiece again with the needle tip after the insertion side.
  • the workpiece to be picked up thus hangs on the needle.
  • the needle swings back into its rest position, it is pulled out of the workpiece again so that it can be put down.
  • the needle can be adjusted in different ways, for example by means of compressed air cylinder, wherein the needle is preferably biased into its rest position by spring force, so that the drive device only needs to be effective when the needle is moved into the working position.
  • the angle of rotation of the needle movement is preferably dimensioned such that the needle tip lies above the contact surface in both end positions of the needle. This ensures that the workpiece hanging on the needle cannot slide off the needle during transport from the receiving point to a depositing point.
  • This security is further increased by the fact that the opening in the direction of movement of the needle is dimensioned such that the opening edges running transverse to the direction of movement of the needle lie directly on the path of movement of the needle.
  • the picked-up workpiece cannot slide off the needle tip even when a certain pull is exerted, since the perforation edge of the contact surface would prevent this.
  • the workpiece is safely stripped from the needle when the needle returns to its rest position, so that the deposited workpiece cannot get caught on the needle.
  • the distance of the axis of the path of movement of the needle from the contact surface is expediently chosen such that the needle in its working position is about the needle size down the contact surface protrudes.
  • the needle is preferably attached to a needle carrier rotatably mounted on the holder, which can be rotated by a predetermined angle of rotation by the drive device.
  • the needle can therefore be easily replaced if necessary.
  • the distance of the needle carrier relative to the support surface can be adjustable in order to be able to adjust the amount by which the needle emerges from the support surface in adaptation to different strengths and qualities of the workpieces to be picked up.
  • the needle carrier can be connected to a workpiece hold-down device which is at a short distance - in the direction of movement of the needle considered - lies in front of the needle tip and its end surface touches the path of movement of the needle. If the support surface is placed on the workpiece to be picked up, the workpiece hold-down presses on the workpiece to be picked up and prevents the formation of a shaft of the workpiece lying in front of the tip of the needle in the area of the opening.
  • the workpiece hold-down smoothes the workpiece during this movement, so that the needle can only penetrate the workpiece superficially.
  • the needle and / or the workpiece hold-down device can be adjustable relative to one another in the direction of movement of the needle.
  • the needle carrier is preferably formed by a circular disk rotatably mounted in a housing, which has a circumferential groove for receiving the needle and a flattened circumferential section which extends over a slightly larger angular section than the curved needle section intended for penetration into the workpiece.
  • a needle carrier is very easy to manufacture.
  • the needle can also be easily held in the circumferential groove of the circular disk so that it can be adjusted in the circumferential direction of the circular disk.
  • the hold-down device can be formed by the cam or the corner that results at the transition between the circumference of the circle and the flattened disk section.
  • the reliability of the device according to the invention can be further increased in that several needles are provided, which can be arranged, for example, so as to be rotatable about a common axis.
  • the needles can be arranged both with the same direction of movement and with the opposite direction of movement, in the latter case a forceps-like effect results in the needles, which absolutely excludes the falling of the picked-up workpiece from the needles, unless the workpiece is torn off the needles.
  • Several devices described above can be provided in any desired arrangement for holding large workpieces, the plurality of needles also being able to be actuated by a common drive device.
  • the device shown in FIGS. 1 to 4, generally designated 10, serves to receive the uppermost piece of fabric from a stack of fabric parts. It comprises a block-shaped housing 12 in the form of a flat cuboid with a flat cylindrical recess 14, the axis 16 of which is directed perpendicular to the large side surfaces 18 of the housing 12.
  • the recess 14 is formed in the housing 12 such that its circumferential surface intersects an edge surface 20 running parallel to the axis 16 to form an opening 22.
  • a circular disk 24 is rotatably mounted about the axis 16.
  • the circular disk 24 has a flattened peripheral section 26, which is shown in FIGS. 1 and 2 as a chord for the sake of simplicity, but does not necessarily have to run in a straight line.
  • the circular disk 24 is provided with a circumferential groove 28 (FIG. 4) in which a circular arc-shaped needle 30 is held by means not shown in such a way that it has a front curved needle section adjoining the needle tip 32 over most of the flattened circumferential section 26 of the circular disk 24 extends, as can be seen in FIGS. 1 and 2.
  • the needle 30 can be connected fixed or adjustable in the direction of the double arrow B in FIG. 1 to the circular disk 24, which forms a needle carrier.
  • the circular disk 24 is mounted in the housing 12 with the aid of a pin 40, which in the present exemplary embodiment is integrally connected to the circular disk 24.
  • the free end of the pin 40 projects into a further recess 42 in the housing 12, which is open towards the side 18 of the housing 12 opposite the recess 14.
  • the pin 40 is connected to a radially directed lever 44 which is tensioned counter-clockwise against a stop 48 by means of a tension spring 46 in FIG. 3.
  • a compressed air cylinder 50 Also attached to the housing 12 is a compressed air cylinder 50, the piston rod 52 of which projects through a housing bore (not shown) into the recess 42 in the housing 12 and engages the lever 44 with its free end.
  • the needle 30 emerges slightly from the slot 38 during the transition from its rest position into its working position, so that it projects beyond the contact surface 54 formed by the free side of the plate 36.
  • the extent to which the needle 30 protrudes beyond the support surface 54 in the working position depends primarily on the thickness of the part of the fabric to be picked up. It has surprisingly been found that with one and the same setting of the needle 30 relative to the support surface 54, fabric parts with different quality and thickness can be accommodated without there being the risk that two or more fabric parts are pierced at the same time or that the fabric part is not can be reliably grasped by the needle. If you want to change the setting, you can do this simply by screwing on whose plate 36 are made with a different thickness on the edge surface 20.
  • the fabric part 56 is pressed down by the circular disk 24 when the device 10 is placed on the stack 57 in the area of the slot 38.
  • the needle 30 could pierce several layers of fabric, with the result that several pieces of fabric would then be removed from the stack 57 at the same time.
  • the distance between the needle tip 32 and the transition region 59 is dimensioned such that just enough material of the material part 56 to be accommodated can slide into this gap in order to be gripped by the needle 30. By adjusting the needle 30 in the direction of the double arrow B, this distance can optionally be adapted to the quality and the thickness of the fabric part.
  • circular disks or needle holders for several needles 30 can also be provided, which are arranged in axially adjacent grooves 28.
  • 5 shows an exemplary embodiment in which two circular disks 24 'are arranged coaxially to one another in a housing 12', each of which carries a needle 30 '.
  • the arrangement This is such that the circular disks 24 'are each adjustable in opposite directions of rotation about an axis 16' with the aid of a compressed air cylinder 50 ', so that the needles 30' move towards one another or move away from one another in the manner of pliers.
  • the coupling of the compressed air pistons 50 'to the circular disks 24' takes place in the manner described with reference to FIGS. 3 and 4.
  • FIGS. 1 to 4 and in FIG. 5 can be attached to a corresponding support frame 58 in any arrangement.
  • the circular disks 24 of a plurality of coaxially arranged devices 10 can also be connected to one another by a common shaft 60, so that a single compressed air cylinder 50 is sufficient to adjust the circular disks 24 of the coupled devices synchronously, as is indicated schematically in FIG. 6 is.
  • the main advantage of the solution according to the invention is that the uppermost fabric part can be automatically removed from a stack of fabric parts without the risk that two or more fabric parts are picked up at the same time.
  • the housing 12 need not be block-shaped and the needle holder need not be designed as a circular disk. It is sufficient if a contact surface is provided with an opening corresponding to the opening or slot 38 and if a needle is curved in the shape of a circular arc and adjustable on a circular path is arranged relative to the support surface in such a way that it superficially punctures the workpiece to be picked up on its circular arc-shaped movement path and exits the workpiece on the same side.
  • FIGS. 7 and 8 show a particularly preferred embodiment of the device according to the invention, which differs in some details from the device according to FIGS. 1 to 4. However, the same parts are again provided with the same reference symbols and are not explained in more detail.
  • a first essential difference from the embodiment described with reference to FIGS. 1 to 4 is that; that the housing 12 is closed.
  • the housing 12 comprises a base part 62, in which the disk-shaped needle carrier 24 is mounted, and a cover 64 closing the base part (FIG. 8).
  • the fully assembled housing 12 has only the opening 22 through which the needle 30 can pass.
  • the disk-shaped needle carrier 24 is not rotatably mounted on the base part 62 but in a fork head 66 by means of a pin 68.
  • the fork head 66 is slidably guided in a recess 70 of the base part 62 perpendicular to the edge surface 20 of the base part 62 and has at its upper end a threaded bore 72 into which a set screw 74 engages, which has a bore 76 parallel to the adjustment direction of the fork head 66 in the Base part 62 penetrates.
  • the set screw 74 By turning the set screw 74, the fork head 66 can be moved up and down in FIG. 7 and the size can thus be set around which the needle 30 protrudes beyond the edge surface 20 as it passes through the opening 22. 7, the clevis 66 is shown adjusted to the top.
  • the disk-shaped needle carrier 24 is connected to a radially directed lift 78, which in turn is connected in an articulated manner to a fork head 80 via an elongated pin connection 82.
  • the clevis 80 is attached to the free end of the piston rod 52 of the working cylinder 50.
  • the device shown in FIGS. 7 and 8 works the same way as the device explained in FIGS. 1 to 4.
  • the completely closed housing has the advantage that the enclosed mechanism is protected against contamination and that there is no risk of injury to the operating personnel from the moving parts.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
EP85107436A 1984-06-15 1985-06-14 Dispositif de préhension d'une pièce flexible plane à partir d'un support Expired EP0166340B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3422337A DE3422337C2 (de) 1984-06-15 1984-06-15 Vorrichtung zum Aufnehmen flexibler, flächiger Werkstücke, insbesondere Stoffteile, von einer Unterlage
DE3422337 1984-06-15

Publications (3)

Publication Number Publication Date
EP0166340A2 true EP0166340A2 (fr) 1986-01-02
EP0166340A3 EP0166340A3 (en) 1986-09-10
EP0166340B1 EP0166340B1 (fr) 1988-09-28

Family

ID=6238485

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85107436A Expired EP0166340B1 (fr) 1984-06-15 1985-06-14 Dispositif de préhension d'une pièce flexible plane à partir d'un support

Country Status (3)

Country Link
US (1) US4641826A (fr)
EP (1) EP0166340B1 (fr)
DE (2) DE3422337C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2195618A (en) * 1986-10-03 1988-04-13 Rhoden Partners Ltd Separating sheet material
GB2202827A (en) * 1987-03-19 1988-10-05 Secretary Trade Ind Brit Needle gripping device
EP0312874A2 (fr) * 1987-10-19 1989-04-26 Prab Robots, Inc. Appareil de manutention de matériaux

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3611101A1 (de) * 1986-04-03 1987-10-08 Basf Ag Vorrichtung zum aufnehmen flexibler und/oder poroeser und/oder klebriger flaechengebilde oder formkoerper
US5087315A (en) * 1988-01-15 1992-02-11 The Secretary Of State For Trade & Industry In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Fabric lifting apparatus and method
SG71046A1 (en) * 1996-10-10 2000-03-21 Connector Systems Tech Nv High density connector and method of manufacture
US8142128B1 (en) 2004-02-05 2012-03-27 James Haas Anchor and method for anchoring
US8230794B1 (en) 2004-02-05 2012-07-31 James Haas Holding system and method for a workbench
US8047890B1 (en) 2004-02-05 2011-11-01 James Haas Toy construction set and method
US7998029B2 (en) * 2008-12-11 2011-08-16 Campbell Mary E Article, assembly and method for rehabilitating cranial (facial and neck) muscles
CN105555668B (zh) * 2014-11-05 2017-05-17 安徽永成电子机械技术有限公司 一种自动灌装线用仿生开袋装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2002750A1 (de) * 1970-01-22 1971-09-09 Rodex Gmbh Umsetzvorrichtung fuer Textilstoffzuschnitte
FR2218417A1 (fr) * 1973-02-20 1974-09-13 Nuovo Pignone Spa

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3402833A (en) * 1966-08-29 1968-09-24 Owens Corning Fiberglass Corp Method and apparatus for handling fibrous materials
US3813094A (en) * 1972-06-06 1974-05-28 Usm Corp Mechanism for transfering flexible work pieces
IT1044272B (it) * 1975-03-20 1980-03-20 Nuovo Pignone Spa Dispositivo per afferrare automaticamente pezze di tessuto di qualunque spessore

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2002750A1 (de) * 1970-01-22 1971-09-09 Rodex Gmbh Umsetzvorrichtung fuer Textilstoffzuschnitte
FR2218417A1 (fr) * 1973-02-20 1974-09-13 Nuovo Pignone Spa

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2195618A (en) * 1986-10-03 1988-04-13 Rhoden Partners Ltd Separating sheet material
GB2202827A (en) * 1987-03-19 1988-10-05 Secretary Trade Ind Brit Needle gripping device
GB2202827B (en) * 1987-03-19 1991-04-24 Secretary Trade Ind Brit Materials gripping device and frame.
EP0312874A2 (fr) * 1987-10-19 1989-04-26 Prab Robots, Inc. Appareil de manutention de matériaux
EP0312874A3 (fr) * 1987-10-19 1990-04-25 Prab Robots, Inc. Appareil de manutention de matériaux

Also Published As

Publication number Publication date
EP0166340A3 (en) 1986-09-10
US4641826A (en) 1987-02-10
EP0166340B1 (fr) 1988-09-28
DE3422337A1 (de) 1985-12-19
DE3422337C2 (de) 1987-02-19
DE3565245D1 (en) 1988-11-03

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