EP0187120A2 - Tête de préhension - Google Patents

Tête de préhension Download PDF

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Publication number
EP0187120A2
EP0187120A2 EP85810575A EP85810575A EP0187120A2 EP 0187120 A2 EP0187120 A2 EP 0187120A2 EP 85810575 A EP85810575 A EP 85810575A EP 85810575 A EP85810575 A EP 85810575A EP 0187120 A2 EP0187120 A2 EP 0187120A2
Authority
EP
European Patent Office
Prior art keywords
pin
housing
gripper head
needles
hollow cylinders
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
EP85810575A
Other languages
German (de)
English (en)
Other versions
EP0187120B1 (fr
EP0187120A3 (en
Inventor
Ferenc Schell
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.)
POLYTEX AG
Original Assignee
POLYTEX AG
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 POLYTEX AG filed Critical POLYTEX AG
Publication of EP0187120A2 publication Critical patent/EP0187120A2/fr
Publication of EP0187120A3 publication Critical patent/EP0187120A3/de
Application granted granted Critical
Publication of EP0187120B1 publication Critical patent/EP0187120B1/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 gripper head for picking up a piece of material or similar pierceable material lying on top from a stack of such pieces of material, with the aid of curved needles, which are attached on the end face in hollow cylinders arranged concentrically to one another, for the purpose of receiving the piece of material, in, opposite directions are rotatable.
  • the gripper head can also be used for separating other pieces of material such as felt pieces, wallpaper sections with a rough surface, knitted fabrics, leather pieces, foam plastic pieces and other stacked pieces pierceable pieces of material are used.
  • Such a gripper head has become known from Austrian Patent No. 238640.
  • the end faces of the hollow cylinders provided with needles protrude against the housing in which they are guided.
  • the device is provided with compressed air blow-out openings through the hollow cylinder.
  • the invention has for its object to provide a gripper head of this type with the help of substances of different thicknesses picked up and afterwards again without the aid of compressed air. can be delivered.
  • the invention solves this problem with a gripper head which has the specific features of claim 1. Since the gripper head lets go of a piece of fabric without additional external energy, it can be fitted with a handle and is then suitable for manual operation. But it can also be attached to a machine that operates it mechanically or using compressed air.
  • the main components of the gripper head are: a housing 10 with a collar 20, a central trigger pin 30 with Hollow cylinders 40 arranged concentrically thereto.
  • the housing 10 comprises an upper fixed part 11 on which a part 13 is rotatably held by means of a flange 12. With the help of the adjusting ring 20, the housing part 13 can be rotated with respect to the fixed housing part 11, 12.
  • the fixed housing part 11 is provided with a corresponding thread on the inside.
  • Ring 22 serves as a stop, as will be described later.
  • the pusher pin 30 has a cylindrical shaft 31 and a thickened cylindrical head 32. In the shaft 31 there is a pin 33 which penetrates it diametrically and protrudes laterally from the shaft.
  • FIG. 2 shows the two hollow cylinders 41 and 42 arranged concentrically around the shaft 31. They are equipped with needles 43 that face each other in opposite directions.
  • the pin 33 which is mounted in the shaft 31 of the trigger bolt, projects through horizontally extending slots 44a through 44 through both hollow cylinders up to the outer circumference of the outer hollow cylinder 42.
  • the slots have a greater width than the diameter of the pin 33.
  • small rollers 35 placed on the pin 33 have space in the slots.
  • oblique, helically extending through slots 45, 46 are provided in the hollow cylinders, which have mutually opposite directions of incline. Where these two slots intersect, pin 14 protrudes through both slots.
  • the pin 33 takes both hollow cylinders 41, 42 with it by means of the rollers 35 engaging in the slots.
  • the shape of the slots 44 only allow rotation of the cylinders around the shaft, or of the outer cylinder 42 around the inner cylinder 41.
  • Pin 33 can be moved together with the push pin 31 in the housing 10 up and down. It ensures that the two hollow cylinders 41, 42 move up and down in synchronism with the pusher pin, but allows, due to the shape of the slot 44, their rotation about the pin 31.
  • pin 14 is fixed in the housing part 13. It therefore does not follow the upward and downward movement of the trigger pin 31, but prevents its rotation because it engages in the axially extending slot 34. Pin 14 also penetrates the helical slots 45, 46 in the cylinders 41, 42. An upward or downward movement of the cylinders therefore results in a counter-rotation thereof about the pusher pin 31 secured against rotation.
  • a return spring 36 is attached under the head 32, which is supported on an annular plate 16 located in the housing part 13.
  • the size of the downward movement, the stroke H is determined by the position of the stop ring 22 in the fixed housing part 11. It is of crucial importance for the operation of the gripper head to be able to set this stroke very precisely and sensitively.
  • the size of the stroke determines how far the needles 43 come out of the housing and at the same time their angle of rotation.
  • Such a sensitive adjustment of the stroke can be accomplished with the help of the adjusting ring 20.
  • the adjusting ring takes the housing part 13 with all the parts mounted therein.
  • the stop ring 22 provided with an external thread is thereby rotated in the internal thread of the fixed housing part 11. This allows a micrometer-like adjustment of the stroke H.
  • a gripper head is shown in side view.
  • a scale 17 is attached to the outside of the fixed housing part 11, 12.
  • An arrow is provided on the adjusting ring 20, which indicates the position of the rotatable housing part 13 relative to the fixed housing part. As described above, this position determines the stroke H and the protrusion of the needles 43 from the housing.
  • the adjustment must be carried out with great precision and precisely, so that the needle tips protrude from the housing part 13 precisely in relation to the material thickness and its nature with respect to the lower edge 13a. During operation, this lower edge is pressed more or less strongly onto a pile of fabric in order to be able to remove the uppermost piece of fabric from it. It has been shown that it is advantageous to use a cover cap 18 as shown in FIG. 6.
  • the cap 18 is provided with openings from which the needle tips protrude more or less during operation.
  • the crib has the effect that when the gripper head is placed on a stack of fabric, not only the housing edge 13a, but a larger area presses onto the fabric and keeps it flat so that the needle tips do not penetrate too deeply.
  • the gripper head can be actuated either with compressed air or mechanically.
  • the head 32 of the pusher pin is designed like a piston with a sealing O-ring 37 which can be moved up and down in a cylindrical bore in the housing part 11. If the gripper head is attached to a machine that transports pieces of material during its operation, it will preferably be operated with compressed air.
  • the handle 50 is connected to the gripper head by means of screws 51 which engage in the threaded bores 18 of the housing part 11 (see FIG. 1).
  • the handle shaft 31 is actuated by means of a pin 52 guided in the housing part 11.
  • a handle 53 is mounted in a groove in the handle housing 50 and can be pivoted about a pin 54.
EP85810575A 1984-12-21 1985-12-05 Tête de préhension Expired EP0187120B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH6118/84 1984-12-21
CH6118/84A CH667259A5 (de) 1984-12-21 1984-12-21 Greiferkopf zum vereinzelten aufnehmen eines materialstueckes, z.b. aus stoff, von einem stapel.

Publications (3)

Publication Number Publication Date
EP0187120A2 true EP0187120A2 (fr) 1986-07-09
EP0187120A3 EP0187120A3 (en) 1987-03-18
EP0187120B1 EP0187120B1 (fr) 1989-03-15

Family

ID=4304563

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85810575A Expired EP0187120B1 (fr) 1984-12-21 1985-12-05 Tête de préhension

Country Status (5)

Country Link
US (1) US4687241A (fr)
EP (1) EP0187120B1 (fr)
JP (1) JPS61155136A (fr)
CH (1) CH667259A5 (fr)
DE (1) DE3568761D1 (fr)

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
DE3640404A1 (de) * 1986-11-26 1988-06-09 Meyer Herbert Kg Vorrichtung zum aufnehmen flaechiger werkstuecke
EP0385234A2 (fr) * 1989-03-02 1990-09-05 Tecnotour S.P.A. Distributeur mécanique actionné par des pièces de monnaie ou des jetons, pour la distribution de tickets ou d'objets similaires
EP0461074A2 (fr) * 1990-06-04 1991-12-11 Zünd Systemtechnik Ag Dispositif pour avancer et tenir un matériau en bande
FR2754804A1 (fr) * 1996-10-18 1998-04-24 Huber Automation Dispositif de prehension et de maintien de produits alveolaires souples ou rigides, de produits textiles ou autres produits presentant une structure perforable

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5228679A (en) * 1990-04-19 1993-07-20 Xerox Corporation Sheet damping mechanism
JP2555546Y2 (ja) * 1991-04-12 1997-11-26 矢崎総業株式会社 配線ユニットの固定金具
WO2015049141A1 (fr) * 2013-10-01 2015-04-09 J. Schmalz Gmbh Dispositif de préhension à aiguille

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT238640B (de) * 1962-02-21 1965-02-25 Trikotfabriken J Schiesser Ag Vorrichtung zum Ergreifen und Abgeben von Gebilden aus einem anstechbaren Stoff, insbesondere von Geweben, Gewirken und Gestricken
JPS552542A (en) * 1978-06-20 1980-01-10 Kayaba Ind Co Ltd Apparatus for picking up fabric

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4009786A (en) * 1974-12-02 1977-03-01 Kenneth Joseph Littlewood Method of and apparatus for handling fabric workpieces
IT1133524B (it) * 1979-10-26 1986-07-09 Hellin J P Dispositivo per prelevare e trasferire selettrivamente e con precisione uno o piu pezzi di tessuto sia manualmente che automaticamente
US4579331A (en) * 1983-01-10 1986-04-01 Veb Textil- Und Konfektionsbetrieb Method and apparatus for gripping and separating sheets

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT238640B (de) * 1962-02-21 1965-02-25 Trikotfabriken J Schiesser Ag Vorrichtung zum Ergreifen und Abgeben von Gebilden aus einem anstechbaren Stoff, insbesondere von Geweben, Gewirken und Gestricken
JPS552542A (en) * 1978-06-20 1980-01-10 Kayaba Ind Co Ltd Apparatus for picking up fabric

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 4, Nr. 25(M-1)[507], 5. März 1980, Seite 155 (M-1); & JP-A-55 002 542 (KAYABA KOGYO) 10.01.1980 *

Cited By (7)

* 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
DE3640404A1 (de) * 1986-11-26 1988-06-09 Meyer Herbert Kg Vorrichtung zum aufnehmen flaechiger werkstuecke
EP0385234A2 (fr) * 1989-03-02 1990-09-05 Tecnotour S.P.A. Distributeur mécanique actionné par des pièces de monnaie ou des jetons, pour la distribution de tickets ou d'objets similaires
EP0385234A3 (fr) * 1989-03-02 1992-09-23 Tecnotour S.P.A. Distributeur mécanique actionné par des pièces de monnaie ou des jetons, pour la distribution de tickets ou d'objets similaires
EP0461074A2 (fr) * 1990-06-04 1991-12-11 Zünd Systemtechnik Ag Dispositif pour avancer et tenir un matériau en bande
EP0461074A3 (en) * 1990-06-04 1992-08-19 Zuend Systemtechnik Ag Device for advancing and holding of web material
FR2754804A1 (fr) * 1996-10-18 1998-04-24 Huber Automation Dispositif de prehension et de maintien de produits alveolaires souples ou rigides, de produits textiles ou autres produits presentant une structure perforable

Also Published As

Publication number Publication date
JPS61155136A (ja) 1986-07-14
EP0187120B1 (fr) 1989-03-15
EP0187120A3 (en) 1987-03-18
CH667259A5 (de) 1988-09-30
US4687241A (en) 1987-08-18
DE3568761D1 (en) 1989-04-20

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