EP0253780A2 - Vorrichtung zum Ergreifen von maschinell hergestellten Textilprodukten - Google Patents

Vorrichtung zum Ergreifen von maschinell hergestellten Textilprodukten Download PDF

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Publication number
EP0253780A2
EP0253780A2 EP87830261A EP87830261A EP0253780A2 EP 0253780 A2 EP0253780 A2 EP 0253780A2 EP 87830261 A EP87830261 A EP 87830261A EP 87830261 A EP87830261 A EP 87830261A EP 0253780 A2 EP0253780 A2 EP 0253780A2
Authority
EP
European Patent Office
Prior art keywords
spring
gripping
fabric
turns
lamellae
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Withdrawn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
EP87830261A
Other languages
English (en)
French (fr)
Other versions
EP0253780A3 (de
Inventor
Vinicio Gazzarrini
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.)
Solis SRL
Original Assignee
Solis SRL
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 Solis SRL filed Critical Solis SRL
Publication of EP0253780A2 publication Critical patent/EP0253780A2/de
Publication of EP0253780A3 publication Critical patent/EP0253780A3/de
Withdrawn legal-status Critical Current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

Definitions

  • the present invention relates to devices for taking textile manufactured products.
  • the pneumatic and mechanical systems known to date do not solve this problem in a reliable and repeatable manner, inter alia, for the following reasons: the first do not work with breathable fabrics because they let the air that can catch more than one piece at a time, and the latter use pins that can pierce through and therefore grab more than one layer of fabric.
  • such devices are not suitable for very fine fabrics such as stockings and tights.
  • a similar difficulty encountered with known devices consists in widening, by acting from the outside, a piece of flattened tubular fabric, a fundamental operation in the manufacture of stockings and tights, which poses a problem for such devices. equivalent to taking one piece of fabric at a time from a pile.
  • the object of the present invention is to provide a gripping device which eliminates the drawbacks of devices of this type known to date and which allows, in a reliable and repeatable manner, to take on a single side, a manufactured textile product automatically. , of a pile of pieces of fabric even very thin and light.
  • a device for taking textile manufactured products which comprises a support structure for a plurality of elements for taking the form of helical turns or strips arranged side by side on the same axis and movable thereon, and means for moving said elements away before setting and therefore bringing the same elements together when they are in contact with the fabric of the manufactured product to be taken.
  • These elements can for example constitute the turns of a tension spring, which is conveniently extended in the inactive position by the removal means while it is released by said means, in contact with the fabric, to allow the setting.
  • the device comprises means for controlling the correct setting of the manufactured product, thus allowing the automation of the device for its use in the handling of manufactured textile products.
  • FIG. 1 shows the front view of a first embodiment of the gripping device according to the present invention, in the rest position;
  • Fig. 2 shows the side view of the gripping device of FIG.
  • FIG. 3 shows the detail of the means for controlling the setting on the part of the device of FIG. 1;
  • Fig. 4 shows a detail of the device of FIG. 1, before setting the tissue;
  • Fig. 5 shows the detail of FIG. 4, after taking the tissue;
  • Fig. 6 shows the device of FIG. 1 active, before taking a tissue;
  • Fig. 7 shows the side view, partly sectioned, of a second embodiment of the gripping device according to the invention;
  • Fig. 8 shows the partially sectioned front view of another embodiment the gripping device according to the invention; and
  • Fig. 9 shows the side view of the device of FIG. 8.
  • the device for taking textile manufactured products in accordance with the invention comprises a support structure 1 in the form of a cross in which two points B and C are defined for fixing to a handling device (for example the arm of a robot), and three connecting points D, E and F, rotatably in the plane of the cross, respectively at one end of a pneumatic cylinder 2 and at an intermediate point of one of the two levers 3 and 4.
  • These points B to F constitute the fixed points of the gripping device, the points B, C and D being located near the upper part of the cross and the points E and F at each end of the horizontal bar of that -this.
  • the lever 3 is mounted on a pivot in G at the other end of the pneumatic cylinder 2 and, at the lower end, in H, at a first element 5 for fixing one end of a spring.
  • traction 6 with cylindrical spiral with several turns 7 of circular section.
  • the other end of the spring 6 is fixed to a second fixing element 8 mounted on an I-pivot on the lower end of the lever 4.
  • the points E, F, H and I are chosen so that the distances EH and FI are equal.
  • a centering rod 9 is mounted on a pivot at one of its ends, to lever 3 at a point K which is located between points E and H, and at its other end, to lever 4 at a point L which is located above the fixed point F so that the distances EK and FL are equal.
  • an element 10 is provided, the concave internal surface of which is intended to receive the spring 6 to which it acts as a stop during the gripping operation which will be described below.
  • the mode of use of the device of FIG. 1, and more generally the operating principle of a gripping device according to the present invention, and with further reference to FIGS. 4 and 5 of the accompanying drawings is as follows. At the start of the gripping operation, the device is in the position shown in FIG. 1, the turns 7 of the spring 6 being adherent to each other and the rod of the pneumatic cylinder 2 in the extended position.
  • the rod When the cylinder 2 is activated by means known per se, the rod, by retracting, imposes at point H of the lever 3, a movement to the left, that is to say a distance from the vertical axis of the device . During this movement, the rod 9 imposes on the lever 4 an angular displacement equal to that of the lever 3 but to the right.
  • the device which is held by the cylinder 2 with the spring in the "open" position is disposed with the spring 6 in abutment against a plane 11 on which is extended the textile manufactured product 12 to be sampled so that the turns 7 of the spring press on the fabric 12 itself.
  • the pneumatic cylinder is then deactivated so that the rod comes out, gradually releasing the spring which compresses.
  • the coils of the spring approach each other, the fabric, not being retained at its ends and moving with the spring at the points of contact with it, penetrates between a coil and the other of the spring thus forming folds 13 which have a development corresponding to the pitch of the turns of the spring in the open position.
  • Fig. 3 is illustrated in section a detail not yet described of the device of FIG. 1, which constitutes an exemplary embodiment for controlling the setting on the part of the spring.
  • the structure 1 is provided with a lateral projection 14 which ends in a fork through which passes and is free to move the elongated end 4a of the lever 4.
  • the elements 16 and 17 constitute a grip control system which emits a signal when the hole 18 n 'is not aligned with the radius transmitted to the receiver 17 by the transmitter to signal the effective setting of the tissue after the closing of the spring 6.
  • Such a system therefore allows the complete automation of the device according to the invention, and although it is not shown in FIGS. 7 and 8 for simplicity, it is easily adaptable to the variants illustrated on these.
  • This photoelectric cell control system can also be replaced by an equivalent static or electromechanical system.
  • Fig. 7 of the accompanying drawings is illustrated a simplified variant of the gripping device of FIG. 1.
  • This device comprises a support element 23 to which is transversely fixed a pneumatic cylinder 20 on the rod 22 from which a helical spring with several turns 21 is mounted coaxially with one end secured to the support 23 and the other end secured to the free end of the rod 22.
  • a pneumatic cylinder 20 on the rod 22 from which a helical spring with several turns 21 is mounted coaxially with one end secured to the support 23 and the other end secured to the free end of the rod 22.
  • Figs. 8 and 9 shows another embodiment of the gripping device according to the invention, in which the spring has been replaced by two sets of identical strips 25 and 26, fixed side by side and axially spaced along two corresponding parallel rods 27 and 28 by a distance greater than their thickness and in a position such that each strip 25 is juxtaposed with a corresponding strip 26.
  • the rod 28 is fixed transversely to a projection 29a of a support element 29 and the rod 27 is fixed to the rod 31 of a pneumatic cylinder 30 fixed transversely to the support element 29.
  • lamellae 25 By activating and deactivating the pneumatic cylinder 30, one obtains the approximation or the distance of each of the lamellae 25 relative to the corresponding lamella 26 and therefore the grip and the relaxation of a piece of fabric on which the free ends have been pressed. lamellae 25, 26. These lamellae can advantageously be covered, at their end part, with rubber to increase the grip capacity.
  • the springs and the lamellae of the devices described can be of metallic material, plastic, synthetic rubber or any other suitable material and the springs can be produced with wire of circular or polygonal cross section.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manipulator (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
EP87830261A 1986-07-15 1987-07-08 Vorrichtung zum Ergreifen von maschinell hergestellten Textilprodukten Withdrawn EP0253780A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT943786 1986-07-15
IT8609437A IT1215035B (it) 1986-07-15 1986-07-15 Dispositivo di presa di manufatti tessili.

Publications (2)

Publication Number Publication Date
EP0253780A2 true EP0253780A2 (de) 1988-01-20
EP0253780A3 EP0253780A3 (de) 1989-10-18

Family

ID=11130131

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87830261A Withdrawn EP0253780A3 (de) 1986-07-15 1987-07-08 Vorrichtung zum Ergreifen von maschinell hergestellten Textilprodukten

Country Status (2)

Country Link
EP (1) EP0253780A3 (de)
IT (1) IT1215035B (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2749908A1 (de) * 1977-11-08 1979-05-10 Union Special Gmbh Einrichtung zum aufnehmen einzelner stoffteile
FR2543119A1 (fr) * 1983-03-25 1984-09-28 Letard Michel Dispositif de prise d'une feuille superieure sur une pile de feuilles en matiere souple
EP0130102A1 (de) * 1983-06-24 1985-01-02 Les Applications Industrielles Vosgiennes, Société anonyme dite en abrégé S.A.P.I.V.O.G. Vorrichtung zum Greifen, Transferieren und Umschlagen von Textilstücken

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2749908A1 (de) * 1977-11-08 1979-05-10 Union Special Gmbh Einrichtung zum aufnehmen einzelner stoffteile
FR2543119A1 (fr) * 1983-03-25 1984-09-28 Letard Michel Dispositif de prise d'une feuille superieure sur une pile de feuilles en matiere souple
EP0130102A1 (de) * 1983-06-24 1985-01-02 Les Applications Industrielles Vosgiennes, Société anonyme dite en abrégé S.A.P.I.V.O.G. Vorrichtung zum Greifen, Transferieren und Umschlagen von Textilstücken

Also Published As

Publication number Publication date
IT8609437A0 (it) 1986-07-15
IT1215035B (it) 1990-01-31
EP0253780A3 (de) 1989-10-18

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