EP0452434B1 - Pince-etau pour transporteurs a chaine - Google Patents

Pince-etau pour transporteurs a chaine Download PDF

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Publication number
EP0452434B1
EP0452434B1 EP90914891A EP90914891A EP0452434B1 EP 0452434 B1 EP0452434 B1 EP 0452434B1 EP 90914891 A EP90914891 A EP 90914891A EP 90914891 A EP90914891 A EP 90914891A EP 0452434 B1 EP0452434 B1 EP 0452434B1
Authority
EP
European Patent Office
Prior art keywords
lever
jaw
clamping jaw
housing
operating lever
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.)
Expired - Lifetime
Application number
EP90914891A
Other languages
German (de)
English (en)
Other versions
EP0452434A1 (fr
Inventor
Peter Merkli
Albert Eugster
Jean-Claude Oppliger
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.)
Grapha Holding AG
Original Assignee
Grapha Holding 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4268376&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0452434(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Grapha Holding AG filed Critical Grapha Holding AG
Publication of EP0452434A1 publication Critical patent/EP0452434A1/fr
Application granted granted Critical
Publication of EP0452434B1 publication Critical patent/EP0452434B1/fr
Anticipated expiration legal-status Critical
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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
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/003—Delivering or advancing articles from machines; Advancing articles to or into piles by grippers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2402/00—Constructional details of the handling apparatus
    • B65H2402/50—Machine elements
    • B65H2402/54—Springs, e.g. helical or leaf springs

Definitions

  • the present invention relates to a clamp for chain conveyors according to the preamble of claim 1.
  • a pair of pliers of this type is known from GB-A-803027.
  • the clamping pliers are opened and closed by means of a control cam arranged on the chain conveyor's circulation path. If a cam roller mounted on the operating lever runs onto the cam during operation of the chain conveyor, the pliers closes and remains closed until the cam roller leaves the cam. This has the disadvantage that the control curve must be present along the entire transport path of the chain transporter, which is complex for long transport routes.
  • the disadvantage here is that the opening travel required on the actuating lever is comparatively large, which prevents rapid opening of the clamping pliers.
  • Another disadvantage is that the closing force exerted by the spring in thin printed products is considerably smaller than in thick printed products, which makes it difficult to convey them in the correct position.
  • the present invention therefore has the task of eliminating the disadvantages mentioned in a clamp of the type mentioned at the outset without accepting the disadvantages caused by a simple spring mechanism.
  • the clamping pliers shown have a substantially rectangular, box-shaped and upwardly open housing 1 made of a plastic.
  • the clamping pliers have a jaw 4 fastened to the housing base 2 with screws 3, a pivotably movable jaw 5 and an actuating lever 6.
  • the plate-shaped jaws 4 and 5 are shown interrupted in Fig. 1 for clarity.
  • the screws 3 can also serve to fasten the clamp on a chain conveyor, not shown.
  • the lever 6 is provided with a roller 7 for its actuation by an external organ.
  • the lever 6 is pivotally mounted on a shaft 8 arranged in the housing 1, specifically in a corner cutout 9 of the housing 1 (FIG. 1).
  • the lever 6 is formed with two arms and on its lever arm 10 opposite the roller 7 has a shoulder 11 which comes to rest in the closed position of the clamping pliers on the inside of the base 2 (FIG. 3) and thus the pivoting movement of the lever 6 around the Shaft 8 limited in one pivot direction.
  • the lever arm 10 is provided with a lug 12 having a bore.
  • a bearing pin 13 is also arranged parallel to the shaft 8.
  • the bearing pin 13 carries a first, on this rotatable sleeve part 14 and, axially separated from the sleeve part 14, a second, on the bearing pin 13 rotatable sleeve part 15.
  • the two independently rotatable sleeve parts 14 and 15 are by a coaxial coil spring 16 (Fig. 1st ) connected to each other, the helical spring 16 being inserted at one end 17 into a lug 18 of the second sleeve part 15 and at its other end 19 (FIG. 1) into the first sleeve part 14.
  • a second coaxial coil spring 20 is arranged as a return spring, which is inserted at one end 21 into a side wall 22 of the housing 1 and at its other end 23 into a nose 24 of the first sleeve part 14.
  • the movable jaw 5 is firmly anchored to a projection 25 of the first sleeve part 14 (FIGS. 2, 3) by means of screws 26 (FIG. 2). It can thus be pivoted on the bearing pin 13 against the force of the helical spring 20 from the open position according to FIG. 2 to the closed position according to FIG. 3.
  • the open position of the jaw 5 is limited in that the jaw 5 comes to rest on an upper housing edge 27 (FIGS. 2, 3).
  • the lever 6 is connected to the second sleeve part 15 via a tab 28, the nose 12 of the lever arm 10 being rotatably mounted in a slot 29 of the tab 28 by means of a bolt 30.
  • the other end of the tab 28 is mounted in a slot 31 of the nose 18 of the second sleeve part 15 by means of the end 17 of the coil spring 16.
  • a rotary movement of the lever 6 thus causes a rotation of the second sleeve part 15 or a rotary movement of the helical spring 16 via the tab 28.
  • the return spring 20 acts from the first sleeve part 14 via the first coil spring 16 and the tab 28 also on the lever 6 and holds it in the position shown in FIG. 2. Since the lever 6 is freely movable in this case is, the coil spring 16 is to be regarded as a quasi-rigid connection between the first sleeve part 14 and the lever 6.
  • the helical spring 16 is twisted when the lever 6 is pivoted further in the direction of the arrow 32, that is to say tensioned since the first sleeve part 14 can no longer rotate.
  • the counterforce now acting on the lever 6 is approximately equal to the force which the movable jaw 5 exerts on the fixed jaw 4, directly or via the object 34.
  • the lever 6 is pivoted in a simple manner in the opposite direction to the arrow 32, the coil spring 16 first opening the movable jaw 5 and pressing the lever 6 downward and then the return spring 20 for a full opening, including the pivoting of the lever 6 in its position according to FIG. 2.
  • FIGS. 4 to 6 The further embodiment of the clamping pliers according to the invention shown in FIGS. 4 to 6 makes use of another dead center mechanism, namely a locking curve instead of a knee joint.
  • the clamping pliers in turn have an approximately rectangular, box-shaped housing 41 with a housing base 42, to which a clamping jaw 44, shown broken off in FIG. 4, is fastened by means of screws 43.
  • a pivotably movable jaw 45 is wire-shaped.
  • the clamping pliers again have a lever 46 for their actuation, which is provided with a roller 47.
  • the lever 46 is connected to a first shaft 48 which is rotatably mounted in the housing 41 and which is subjected to the force of a coaxial restoring spring 49 which is supported on the housing base 42 and which thus rests the lever 46 in the position shown in FIG. 5 against a housing stop 50 presses.
  • a second shaft 51 which is designed as a hollow shaft and, like the housing 41, is made of a plastic, is rotatably mounted.
  • the shaft 51 is provided in the interior of the housing 41 with a longitudinal slot 52.
  • the shaft 51 projects beyond it and is provided with an integrally formed lever arm 53.
  • the lever arm 53 has a straight longitudinal groove 54 which is open at the radially outer end and has a sharp-angled bend 55 in its radially outer end region and a curvature 56 on the other side (FIGS. 5, 6).
  • the lever 46 is provided on its side opposite the groove 54 with a roller 57 which is guided in the groove 54. A pivoting movement of the lever 46 thus causes the shaft 51 to rotate.
  • the wire-shaped, movable jaw 45 is wound inside the housing 41 with its two side parts 58 and 59 around the shaft 51 and with its ends 60 and 61 in the slot 52 of the Shaft 51 inserted.
  • the winding sections of the movable jaw 45 thus each form a helical spring 62 or 63, which connect the jaw 45 to the lever 46 via the shaft 51 and the lever arm 53.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Discharge By Other Means (AREA)
  • Chain Conveyers (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Clamps And Clips (AREA)
  • Manipulator (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Claims (8)

  1. Pince-étau pour transporteurs à chaîne, avec un boîtier (1 ; 41) qui peut être relié à la chaîne transporteuse et dans lequel sont disposés un premier mors de serrage (4 ; 44) et un second mors de serrage (5 ; 45), monté à pivotement et pouvant être déplacé, autour d'un premier axe (13 ; 51), contre le premier mors de serrage (4 ; 44) à partir d'une position ouverte, et avec un levier d'actionnement (6 ; 46), monté dans le boîtier (1 ; 41) et qui peut être pivoté, autour d'un second axe (8 ; 48) parallèle au premier axe (13 ; 51), entre deux positions finales qui correspondent respectivement à la position ouverte et à la position fermée du second mors de serrage (5 ; 45) par rapport au premier mors de serrage (4 ; 44), le levier d'actionnement (6 ; 46) entraînant, par une liaison en pivotement (29, 30 ; 54, 57), un autre levier (28 ; 53) qui transmet son mouvement de pivotement au second mors de serrage (5 ; 45) par l'intermédiaire d'un élément de ressort (16 ; 62, 63), serrant ainsi ce second mors pendant le mouvement de fermeture, caractérisée en ce que la liaison en pivotement (29, 30 ; 54, 57) entre les leviers (respectivement 6 ; 46 et 28 ; 53) passe par un point mort pendant la tension de l'élément de ressort (16 ; 62, 63), de telle sorte que l'élément de ressort (16 ; 62, 63), une fois le point mort dépassé, maintient bloqués le second mors de serrage (5 ; 45) et le levier d'actionnement (6 ; 46) dans la position fermée.
  2. Pince-étau selon la revendication 1, caractérisée en ce que le levier (28) est une patte qui est reliée de façon articulée au levier d'actionnement (6) par sa première extrémité et à l'élément de ressort (16) par son autre extrémité.
  3. Pince-étau selon la revendication 2, caractérisée en ce que le levier d'actionnement (6) est à deux bras, la patte (28) étant reliée de façon articulée au second bras de levier (10, 12).
  4. Pince-étau selon la revendication 2 ou 3, caractérisée en ce que le levier d'actionnement (6) est relié à un arbre (8), monté à rotation dans le boîtier (1) et constituant ledit second axe, en ce que le mors de serrage mobile (5) est monté à pivotement sur un pivot (13) constituant ledit premier axe, et en ce que l'élément de ressort est un ressort à boudin (16) disposé coaxialement au pivot (13) et possédant deux extrémités (17, 19) s'étendant dans la direction longitudinale du pivot (13), dont l'une (17) sert d'axe d'articulation pour la patte (28) et dont l'autre (19) est reliée en transmission de couple de rotation au mors de serrage mobile (5).
  5. Pince-étau selon la revendication 4, caractérisée en ce qu'un autre ressort à boudin (20) est disposé sur le pivot (13) comme ressort de rappel pour le mors de serrage mobile (5) et pour le levier d'actionnement (6).
  6. Pince-étau selon la revendication 1, caractérisée en ce que la liaison en pivotement (54, 57) présente une rainure (54), formant une piste de came déterminant le point mort et présentant de préférence un coudage anguleux (55), et une came (57) s'engageant dans la rainure (54).
  7. Pince-étau selon la revendication 6, caractérisée en ce que le levier d'actionnement (46) est lié en rotation à un premier arbre (48), monté dans le boîtier (41) et constituant ledit second axe, en ce que le levier (53) pourvu de la rainure (54) est formé sur un second arbre (51), monté dans le boîtier (41) et constituant ledit premier axe, et en ce que le mors de serrage mobile (45) est réalisé en fil d'acier, ses parties latérales (58, 59) s'étendant en direction du second arbre (51) étant enroulées en sens contraires autour du second arbre (51) sous la forme de ressorts à boudin (62, 63), et fixées au second arbre (51) par leurs extrémités (60, 61).
  8. Pince-étau selon la revendication 7, caractérisée en ce qu'un autre ressort à boudin (49) est disposé sur le premier arbre (48) comme ressort de rappel pour le levier d'actionnement (46) et pour le mors de serrage mobile (45).
EP90914891A 1989-11-08 1990-10-22 Pince-etau pour transporteurs a chaine Expired - Lifetime EP0452434B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH4023/89 1989-11-08
CH402389 1989-11-08
PCT/CH1990/000247 WO1991007342A1 (fr) 1989-11-08 1990-10-22 Pince-etau pour transporteurs a chaine

Publications (2)

Publication Number Publication Date
EP0452434A1 EP0452434A1 (fr) 1991-10-23
EP0452434B1 true EP0452434B1 (fr) 1994-07-20

Family

ID=4268376

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90914891A Expired - Lifetime EP0452434B1 (fr) 1989-11-08 1990-10-22 Pince-etau pour transporteurs a chaine

Country Status (6)

Country Link
US (1) US5178262A (fr)
EP (1) EP0452434B1 (fr)
JP (1) JPH04502608A (fr)
AT (1) ATE108746T1 (fr)
DE (1) DE59006518D1 (fr)
WO (1) WO1991007342A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2053184C1 (ru) * 1990-08-06 1996-01-27 Радуцкий Григорий Аврамович Устройство для вывода газетной продукции из фальцаппарата рулонной ротационной машины
SE469889B (sv) * 1992-03-16 1993-10-04 Wamag Idab Ab Griparetransportör med permanent förspänd klämback
SE469890B (sv) * 1992-03-16 1993-10-04 Wamag Idab Ab Griparetransportör med permanent förspänd gripare
ATE127425T1 (de) * 1992-12-01 1995-09-15 Frisco Findus Ag Greifvorrichtung.
DE59306510D1 (de) * 1992-12-02 1997-06-26 Ferag Ag Greifer für eine Fördereinrichtung zum Fördern von ein- oder mehrblättrigen Druckereierzeugnissen
US5575379A (en) * 1993-06-17 1996-11-19 Gammerler Maschinenbau Und Anlagentechnik Gmbh Newspaper conveyor
US5810347A (en) * 1994-11-21 1998-09-22 Heidelberger Druckmaschinen Ag Apparatus for gripping and conveying sheet-like products
DE19642117A1 (de) 1996-10-12 1998-04-16 Koenig & Bauer Albert Ag Klemmzange für Endlosförderer
US6336310B1 (en) * 1998-09-08 2002-01-08 Sanford Redmond Method and apparatus for making compact packages for speadable product
US6227588B1 (en) * 1999-02-17 2001-05-08 Heidelberger Druckmaschinen Aktiengesellschaft Gripper assembly
US6357741B1 (en) * 2000-01-20 2002-03-19 Heidelberger Druckmaschinen Ag Velocity adjustable grippers on sliding carriage
US6925784B2 (en) * 2003-09-11 2005-08-09 The Procter & Gamble Company Flexible manufacturing system for consumer packaged products
US7690635B2 (en) * 2007-12-24 2010-04-06 Pitney Bowes Inc. Cam driven insert gripper
EP2840049B1 (fr) * 2013-08-20 2017-05-10 Harro Höfliger Verpackungsmaschinen GmbH Dispositif de transport d'un prospectus
WO2019130316A1 (fr) * 2018-01-01 2019-07-04 Foldimate Inc. Attache d'article pour plieuse, ensemble attache d'article et procédé d'introduction d'article pour plieuse

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB803027A (en) * 1956-03-12 1958-10-15 Roland Offsetmaschf Improvements in or relating to sheet conveying mechanism of printing machines
US2940750A (en) * 1957-11-26 1960-06-14 Mestre Luis Collating machine
FR2214292A5 (fr) * 1973-01-16 1974-08-09 Ctre Etud Tech Ind Habillement
CH590778A5 (fr) * 1975-10-08 1977-08-31 Ferag Ag
CH618398A5 (fr) * 1977-06-06 1980-07-31 Ferag Ag
US4167996A (en) * 1978-03-27 1979-09-18 General Motors Corporation Suspension type clamping transport hook
CH644816A5 (de) * 1980-02-08 1984-08-31 Ferag Ag Foerdereinrichtung, inbesondere fuer druckprodukte, mit an einem umlaufenden zugorgan verankerten greifzangen.
US4681213A (en) * 1985-10-23 1987-07-21 Harris Graphics Corporation Gripper assembly
US4746007A (en) * 1986-02-20 1988-05-24 Quipp Incorporated Single gripper conveyor system
US4921294A (en) * 1988-06-03 1990-05-01 Am International Incorporated Spring wire gripper jaw
CH677652A5 (fr) * 1989-03-07 1991-06-14 Grapha Holding Ag
US4968081A (en) * 1989-03-13 1990-11-06 Hall Processing Systems Non-contact actuator

Also Published As

Publication number Publication date
EP0452434A1 (fr) 1991-10-23
WO1991007342A1 (fr) 1991-05-30
ATE108746T1 (de) 1994-08-15
DE59006518D1 (de) 1994-08-25
US5178262A (en) 1993-01-12
JPH04502608A (ja) 1992-05-14

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