EP2921261B2 - Appareil à entraînement pneumatique - Google Patents

Appareil à entraînement pneumatique Download PDF

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Publication number
EP2921261B2
EP2921261B2 EP14164124.1A EP14164124A EP2921261B2 EP 2921261 B2 EP2921261 B2 EP 2921261B2 EP 14164124 A EP14164124 A EP 14164124A EP 2921261 B2 EP2921261 B2 EP 2921261B2
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EP
European Patent Office
Prior art keywords
piston rod
arm
bearing element
head housing
work tool
Prior art date
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Application number
EP14164124.1A
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German (de)
English (en)
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EP2921261A1 (fr
EP2921261B1 (fr
Inventor
Stefano Raimondi
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.)
Univer SpA
Original Assignee
Univer SpA
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Application filed by Univer SpA filed Critical Univer SpA
Priority to EP14164124.1A priority Critical patent/EP2921261B2/fr
Priority to US14/907,700 priority patent/US10016878B2/en
Priority to PCT/EP2015/055901 priority patent/WO2015140288A1/fr
Publication of EP2921261A1 publication Critical patent/EP2921261A1/fr
Publication of EP2921261B1 publication Critical patent/EP2921261B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/12—Arrangements for positively actuating jaws using toggle links
    • B25B5/122—Arrangements for positively actuating jaws using toggle links with fluid drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/061—Arrangements for positively actuating jaws with fluid drive
    • B25B5/064—Arrangements for positively actuating jaws with fluid drive with clamping means pivoting around an axis perpendicular to the pressing direction

Definitions

  • the invention relates to a pneumatically operable working device for use in body construction in the motor vehicle industry, with a cylinder which has a cylinder housing, a piston displaceable therein and a piston rod connected to it, linearly displaceable and led out of the cylinder housing, and with a cylinder connected to the cylinder housing Head housing, wherein an area of the piston rod projecting into the head housing interacts with at least one toggle lever for pivoting an arm assigned to the toggle lever, in particular gripping arm or tensioning arm, this arm being mounted in the head housing and being pivotable between a closed position and an open position.
  • Such a tool is from the DE 296 15 157 U1 known.
  • two toggle levers pivot directly on the end of the piston rod located in the head housing.
  • two gripping arms can be pivoted between a closed position and an open position. In the closed position, the gripping arms are arranged parallel to one another.
  • a bearing axis for the two toggle levers which is arranged in the region of the free end of the piston rod is provided at the end with bearing rollers which are guided in guide grooves in the head housing.
  • Pneumatically operated tools that have gripping or clamping arms, and in which a piston rod that cannot be adjusted in length are used, are also from the DE 10 2004 040 606 B3 .
  • the piston rod In the EP 2 548 700 A1 describes a pneumatically operable working device in which a piston of a cylinder is positioned in the open position of a tensioning arm in the region of a base of the cylinder housing.
  • the piston rod In order to be able to set the opening angle of the tension arm, the piston rod is designed to be variable in length and has piston rod parts with threaded sections, the piston rod parts being screwed into one another.
  • a pneumatically operable implement that has the features of the upper portion of claim 1 is known from the US 4,576,367 A. known.
  • the bearing element has a single receptacle for the pivotable mounting of a single joint connector. This interacts with a toggle lever to which an arm is assigned which is mounted in the head housing. This arm is a clamping arm for clamping a workpiece.
  • the object of the present invention is to develop a working tool of the type mentioned at the outset such that a large pivoting angle range, in particular a large opening angle of the arm, can be represented with a universal design of the connection of the piston rod and at least one arrangement of the toggle lever and the associated arm.
  • the piston rod receives a bearing element for the toggle lever in the region of its end projecting into the head housing.
  • the bearing element is guided in a guide of the head housing in the direction of the longitudinal axis of the piston rod.
  • the bearing element has a receptacle for the pivotable mounting of an articulated connector at a radial distance from the longitudinal axis of the piston rod. This is pivotally connected to the arm at a distance from a pivot axis of the arm in the region of an end facing away from the bearing element.
  • the end pivot axes of the joint connector and the pivot axis of the arm are arranged parallel to each other.
  • the at least one toggle lever for pivoting the arm assigned to the toggle lever is not mounted directly in the piston rod, but instead the bearing element is provided for mounting this toggle lever.
  • This bearing element is designed so that the toggle lever engages the bearing element at a radial distance from the longitudinal axis of the piston rod. Because of this mounting, the piston rod does not limit the pivoting path of the articulated connector forming part of the toggle lever.
  • the bearing element is designed in such a way that it has receptacles on opposite sides for the pivotable mounting of two joint connectors.
  • a receptacle can remain free with this design, with which only one of the two receptacles receives an articulated connector to which an arm is assigned, or both receptacles are equipped with articulated connectors so that the working device has two arms. Because the bearing element is guided in a guide of the head housing in the direction of the longitudinal axis of the piston rod, forces can be optimally introduced into the arm or from the arm into the bearing element, regardless of whether the implement has one or two arms.
  • the implement can thus be designed such that the receptacles for the pivotable mounting of the two joint connectors are provided on the respective side of the bearing element, thus laterally with respect to the longitudinal axis of the piston rod.
  • This design enables a structurally simple connection of the two articulated connectors that interact with the arms.
  • the same bearing element can be used for reasons of standardization of the implement, in which case only one joint connector is connected to the bearing element for connection to one arm, while the other receptacle of the bearing element does not accept a joint connector.
  • the bearing element receives the two hinge connectors, it is considered to be particularly advantageous if the bearing element, the hinge connectors and the arms are arranged symmetrically to a plane running through the longitudinal axis of the piston rod. This results in a symmetrical design of the implement in the area of the head housing and the two arms, so that gripping or clamping forces introduced into the two arms are introduced symmetrically into the implement when contacting a component associated with the implement, for example a body panel.
  • the guidance of the bearing element in the guidance of the head housing in the direction of the longitudinal axis of the piston rod is particularly advantageous. This guidance is important not only from the point of the actual guidance of the bearing element in the head housing, but also from the aspect of introducing the forces acting on the arm or arms from the bearing element into the head housing.
  • This guided mounting of the bearing element makes it possible to implement the implement both in the variant with one arm and in the variant with two arms. In the variant with one arm, forces are introduced asymmetrically into the head housing via the arm. This is easily possible due to the guidance of the bearing element in the head housing, because the forces are introduced directly into the head housing via the bearing element and the guide assigned to it.
  • the bearing element is mounted in a guide of the head housing by means of a sliding and / or roller bearing.
  • roller bearings in particular, the use of roller bearings in the form of roller or barrel bearings is considered to be advantageous.
  • the guide has in particular mutually parallel guide surfaces which are arranged parallel to the pivot axis of the arm.
  • the respective receptacle has a plate-shaped attachment which is connected to a base body of the bearing element, the attachment having a hole for receiving a bearing pin for the associated joint connector.
  • a particularly good guidance of the bearing element with an optimal force application point of the joint connector or joints results in the working device according to the invention in that the bearing element in the axial direction of the piston rod has one behind the other bearing parts for supporting the bearing element in the head housing, whereby, based on the axial direction of the Piston rod, the at least one receptacle is arranged between the bearing parts. Because of this design, forces can be transmitted between the bearing element and the articulated connector with a high tilting stability of the bearing element.
  • the pneumatically operated implement has in particular a toggle lever for pivoting an arm assigned to it, or in particular two toggle levers, each of the two toggle levers serving to pivot an arm assigned to this toggle lever.
  • the arm is in particular a gripping arm.
  • the toggle lever or the toggle lever are arranged in the closed position of the arm or the arms in particular in an over-dead center position. A further pivoting of the respective toggle lever beyond the dead center position is prevented by a stop which can be arranged as desired and which has the task of preventing an axial displacement of the piston rod or components interacting with this piston rod in the direction of a bottom of the cylinder housing.
  • the working device can be designed such that the cylinder and the head housing represent separate structural units or a common structural unit.
  • the stop part is in particular non-rotatably positioned in the head housing. If the piston rod is rotated with respect to its longitudinal axis, and thus the position of the stop part changes in the direction of the longitudinal axis of the piston rod, the stop part is accordingly not rotated and is only displaced in the axial direction of the piston rod.
  • This positioning of the stop part in the head housing can be achieved in different ways, for example by guiding the stop part in the direction of the longitudinal axis of the piston rod in the head housing, or by an out-of-round design of the stop part, the non-round outer contour of the stop part with a correspondingly designed inner contour of the head housing cooperates.
  • the position of the stop part can be adjusted in a structurally particularly simple manner if a bottom of the cylinder housing facing away from the head housing has means for rotating the piston rod in the closed position of the arm when the piston is arranged in the region of the bottom. These means penetrate in particular the floor and can preferably be displaced in the direction of the longitudinal axis of the piston rod in order to be brought into engagement with the piston rod. It is then possible to turn the piston rod from outside the cylinder housing. If the stop part is in the desired set position, the means are brought out of engagement with the piston rod again. This takes place, for example, when the cylinder is pressurized by the pressure medium.
  • a bottom of the cylinder housing facing away from the head housing has means for axially displacing the piston rod in the closed position of the arm when the piston is arranged in the region of the bottom in order to move the toggle lever out of an over-center position.
  • This means for axially displacing the piston rod in the closed position of the arm is provided in order to enable the arm to be released from the over-dead center position of the toggle lever in a fluid-independent manner if the supply of fluid to the cylinder should fail in the closed position of the arm.
  • the pivoting angle of the toggle lever from the dead center position to the overdead position is a fraction of an angular degree, so that it is only necessary to move the toggle lever out of the overdead position by moving the piston rod a short distance by means of the means for axially displacing the piston rod, which corresponds to this small angle.
  • the means for axially displacing the piston rod have the means for rotating the piston rod.
  • the means are designed in the simplest manner as displaceable in the bottom of the cylinder housing and a plunger sealed against the bottom, which has a receptacle for a tool for rotating the plunger outside the cylinder housing and a receptacle for non-rotatably engaging in a receptacle of the latter within the cylinder housing facing end of the piston rod.
  • the implement 1 has a cylinder 3.
  • a head housing 5 is connected to a cylinder housing 4 via fastening means (not illustrated).
  • the cylinder housing 4 accommodates a piston 6 displaceable in this and a piston rod 7 connected to it, linearly displaceable and guided out of the cylinder housing 4 and sealed, and not variable in length.
  • a region of the piston rod 7 projecting into the head housing 5 interacts with at least one toggle lever 8 for pivoting the arm 2 assigned to it.
  • This arm 2 is mounted in the head housing 5 via an axis 9 and about this axis 9 between an open position ( Fig. 1 ) and a closed position ( Fig. 3 ) swiveling.
  • the stop part 11 is non-rotatably positioned in the head housing 5, specifically via a groove, not shown, which extends parallel to the longitudinal axis 13 of the piston rod 7 and into which the stop part 11 engages.
  • the thread in the area of the threaded section 10 between the piston rod 7 and the stop part 11 is self-locking.
  • the piston rod 7 is rotatable with respect to its longitudinal axis 13 and receives a bearing element 15 for the toggle lever 8 in the region of its end facing the toggle lever 8.
  • the piston rod 7 is rotatable about the longitudinal axis 13 with respect to the bearing element 15.
  • the piston rod 7 is inserted into a receptacle 16 of the bearing element 15 and is fixedly connected to the bearing element 15 by means of a form-locking ring 17 extending the longitudinal axis 13.
  • a bottom 18 of the cylinder housing 4 facing away from the head housing 5 has means 19 for rotating the piston rod 7 in the closed position ( FIG. 3 ) of the arm 2 with the piston 6 arranged in the region of the base 18.
  • This means 19 is a plunger, which is sealed in the bottom 18 and is displaceable in the longitudinal axis 13 of the piston rod 7.
  • the end of the plunger 19 arranged outside the cylinder housing 4 has a hexagon recess 20 for receiving a tool (not shown) for rotating the plunger 19 about the longitudinal axis 13, the tool being inserted into the hexagon recess 20 with a hexagon end.
  • the end arranged inside the cylinder housing 4 is provided with a projection 21 with a hexagonal cross section.
  • Fig. 14 shows the engagement of the plunger 19, wherein the projection 21 in the closed position of the arm 2 is inserted into a recess 22 of cross-section of the facing end of the piston rod 7.
  • the bearing element 15 has in the axial direction 13 of the piston rod 7 one behind the other at a distance from each other the roller bearing elements 26 for mounting the bearing element 15 in the head housing 5. Relative to the axial direction 13 of the piston rod 7, the receptacle 28 or the two receptacles 28 is arranged between these roller bearing elements 26.
  • Fig. 15 shows a detail of the mounting of the articulated connector 29 in the arm 2.
  • the axis 31 is extended and engages in a guide groove 33 of the head housing 5 which extends essentially over a quarter circle.
  • the piston 6 moves further, it finally reaches its end position adjacent to the base 18, in which the two gripping elements 36 and 37 make contact or a sheet metal arranged between them is gripped by means of the gripping elements 36 and 37.
  • the toggle lever 8 is in a slight dead center position, in which the connecting line of the two axes 30 and 31, based on their center point, is at an angle slightly unequal to 90 ° to the longitudinal axis 13 of the piston rod 7 is arranged such that the center point of the axis 30 is arranged somewhat closer to the ground than the center point of the axis 31.
  • this over-center position of the toggle lever 8 can be released by the mechanical action of the plunger 19 described above.
  • the axial displacement of the piston rod 7 and thus the corresponding axial displacement of the bearing element 15 mean that the joint connector 29 is pivoted slightly so that the center point of the axis 30 is further away from the ground than the center point of the axis 31. In this position there is a pivoting movement of the arm 2 mechanically possible by gripping the arm 2.
  • the position of the stop member 11 can be changed by rotating the piston rod 7.
  • the plunger 19 is inserted into the recess 22 of the piston rod 7.
  • the plunger 19 is moved back when the cylinder 3 is pressurized to transfer the piston 6 from the closed position of the working device, with pressure medium being fed to the working space 35 and also acting on the facing end face of the plunger 19. Even when the plunger 19 is mechanically acted upon in order to transfer the toggle lever from the dead center position, the plunger 19 is subsequently moved back on account of the pressure medium supplied to the working space 35 (after the pressure medium is available again).
  • the reference numeral 38 denotes an interrogation device which is mounted in the head housing 5 and serves to interrogate the position of the bearing element 15 or the stop part 11.
  • the 5 to 7 show for the previously discussed operating states according to the 1 to 4 a working device 1 adjusted with respect to the opening angle with an opening angle of 50 °.
  • This adjustment clearly results, for example, from the fact that the contact surfaces 12 and 14 are at a different distance from one another when the arm 2 is closed, the change in the distance corresponding to the change in the position of the stop part 11 with respect to the piston rod 7.
  • the embodiment according to the 8 to 13 largely corresponds to that of 1 to 7 , To avoid repetition, reference is made to the detailed description of the first exemplary embodiment.
  • two arms 2 are provided instead of one arm 2.
  • the connection of the second arm is identical to the one arm according to the first exemplary embodiment, with which the bearing element 15, the articulated connector 29 and the arms 2 are arranged symmetrically to the plane running through the longitudinal axis 13 of the piston rod 7. In this respect, reference is made to the above description regarding the connection of one arm 2.
  • Fig. 8 shows the implement 1 with the two arms 2 in an open position of 90 °
  • Fig. 9 the intermediate position
  • Fig. 10 the closed position in which the two gripping elements 36 and 37 make contact.
  • Fig. 11 shows for the execution of the implement 1 with the two arms 2 an adjusted position of the stop part 11, so that an open position of 160 ° according to Fig. 11 reveals Fig. 12 illustrates the intermediate position and Fig. 13 shows the closed position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Manipulator (AREA)

Claims (13)

  1. Appareil de travail à commande pneumatique (1), pour l'utilisation dans la construction de carrosseries dans l'industrie automobile, comprenant un cylindre (3) qui présente un carter de cylindre (4), un piston (6) déplaçable dans celui-ci et une tige de piston (7), connectée à celui-ci, déplaçable linéairement et guidée hors du carter de cylindre (4), ainsi qu'un boîtier de tête (5) connecté au carter de cylindre (4), une région de la tige de piston (7) faisant saillie dans le boîtier de tête (5) coopérant avec au moins une genouillère (8) pour le pivotement d'un bras (2) associé à la genouillère (8), en particulier un bras de préhension ou un bras de serrage, ce bras (2) étant supporté dans le boîtier de tête (5) et pouvant pivoter entre une position fermée et une position ouverte, la tige de piston (7), dans la région de son extrémité saillant dans le boîtier de tête (5), recevant un élément de palier (15) pour la genouillère (8), l'élément de palier (15) étant guidé dans un guide (27) du boîtier de tête (5) dans la direction de l'axe longitudinal (13) de la tige de piston (7), et l'élément de palier (15), à distance radiale de l'axe longitudinal (13) de la tige de piston (7), présentant un logement (28) pour le support pivotant d'un dispositif de connexion articulé (29) qui, dans la région d'une extrémité opposée à l'élément de palier (15), est connecté de manière pivotante au bras (2) à distance d'un axe de pivotement (9) du bras (2), les axes de pivotement du côté de l'extrémité (30/31) du dispositif de connexion articulé (29) et l'axe de pivotement (9) du bras (29) étant disposés parallèlement l'un à l'autre, l'élément de palier (15) présente, sur des côtés opposés, des logements (28) pour le support pivotant de deux dispositifs de connexion articulés (29), caractérisé en ce que l'élément de palier (15) présente, dans la direction de l'axe de la tige de piston (7), des pièces de palier (26) disposées les unes derrière les autres et espacées les unes des autres pour le support de l'élément de palier (15) dans le boîtier de tête (5), l'au moins un logement (28) étant disposé entre les pièces de palier (26) par rapport à la direction de l'axe (13) de la tige de piston (7).
  2. Appareil de travail selon la revendication 1, caractérisé en ce qu'il présente une genouillère unique (8) pour faire pivoter un bras (2) associé à celle-ci, ou deux genouillères (8, 8), chacune des deux genouillères (8, 8) servant au pivotement d'un bras (2) associé à cette genouillère (8).
  3. Appareil de travail selon la revendication 1 ou 2, caractérisé en ce que les deux dispositifs de connexion articulés (29) qui sont connectés aux logements (28) sont connectés dans la région de leurs extrémités opposées à l'élément de palier (15) de manière pivotante à deux bras (2) à distance des axes de pivotement (9) des bras (2), les axes de pivotement (9, 30, 31) des dispositifs de connexion articulés (29) et des bras (2) étant disposés parallèlement l'un à l'autre.
  4. Appareil de travail selon la revendication 3, caractérisé en ce que l'élément de palier (15), les dispositifs de connexion articulés (29) et les bras (2) sont disposés de manière symétrique par rapport à un plan s'étendant à travers l'axe longitudinal (13) de la tige de piston (7).
  5. Appareil de travail selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le logement respectif (28) présente un insert en forme de plaque (28) qui est connecté à un corps de base (39) de l'élément de palier (15), l'insert (28) présentant un trou pour recevoir un boulon de palier (30) pour le dispositif de connexion articulé associé (29).
  6. Appareil de travail selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'élément de palier (15) est supporté au moyen d'un support de palier lisse et/ou à rouleaux dans le guide (27) du boîtier de tête (5).
  7. Appareil de travail selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le guide (27) présente des surfaces de guidage parallèles les unes aux autres qui sont disposées parallèlement à l'axe de pivotement (9) du bras (2) .
  8. Appareil de travail selon l'une quelconque des revendictions 1 à 7, caractérisé en ce que la tige de piston (7) est non variable en longueur et la position ouverte du bras (2) peut être ajustée en continu, la tige de piston (7) présentant une portion filetée (10) et recevant dans la région de la portion filetée (10) une partie de butée (11) réglable dans la direction longitudinale de la tige de piston (7), laquelle, dans la position ouverte de ce bras (2), s'applique contre un appui (12) stationnaire par rapport au boîtier de tête (5), et la tige de piston (7) étant rotative par rapport à son axe longitudinal (13), la tige de piston (7) pouvant tourner par rapport à l'élément de palier (15).
  9. Appareil de travail selon la revendication 8, caractérisé en ce que la partie de butée (11) est positionnée de manière solidaire en rotation dans le boîtier de tête (5).
  10. Appareil de travail selon la revendication 8 ou 9, caractérisé en ce que l'appui stationnaire (12) est réalisé sous forme de surface d'appui du boîtier de tête (5).
  11. Appareil de travail selon l'une quelconque des revendications 1 à 10, caractérisé en ce que la genouillère (8) ou les genouillères (8, 8) dans la position fermée du bras (2) ou des bras (2, 2) sont disposées dans une position de point mort haut.
  12. Appareil de travail selon l'une quelconque des revendications 1 à 11, caractérisé en ce qu'un fond (18) du carter de cylindre (4) opposé au boîtier de tête (5) présente des moyens (19) pour faire tourner la tige de piston (7) dans la position fermée du bras (2) lorsque le piston (6) est disposé dans la région du fond (18).
  13. Appareil de travail selon l'une quelconque des revendications 1 à 12, caractérisé en ce qu'un fond (18) du carter de cylindre (4) opposé au boîtier de tête (5) présente des moyens (19) pour le déplacement axial de la tige de piston (7) dans la position fermée du bras (2) lorsque le piston (6) est disposé dans la région du fond (18) afin de déplacer la genouillère (8) hors d'une position de point mort haut.
EP14164124.1A 2014-03-20 2014-04-10 Appareil à entraînement pneumatique Active EP2921261B2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP14164124.1A EP2921261B2 (fr) 2014-03-20 2014-04-10 Appareil à entraînement pneumatique
US14/907,700 US10016878B2 (en) 2014-03-20 2015-03-20 Pneumatically operable work tool
PCT/EP2015/055901 WO2015140288A1 (fr) 2014-03-20 2015-03-20 Engin de travail à fonctionnement pneumatique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14160861.2A EP2921260B1 (fr) 2014-03-20 2014-03-20 Appareil à entraînement pneumatique
EP14164124.1A EP2921261B2 (fr) 2014-03-20 2014-04-10 Appareil à entraînement pneumatique

Publications (3)

Publication Number Publication Date
EP2921261A1 EP2921261A1 (fr) 2015-09-23
EP2921261B1 EP2921261B1 (fr) 2016-11-02
EP2921261B2 true EP2921261B2 (fr) 2020-01-22

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EP14160861.2A Not-in-force EP2921260B1 (fr) 2014-03-20 2014-03-20 Appareil à entraînement pneumatique
EP14164124.1A Active EP2921261B2 (fr) 2014-03-20 2014-04-10 Appareil à entraînement pneumatique

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EP14160861.2A Not-in-force EP2921260B1 (fr) 2014-03-20 2014-03-20 Appareil à entraînement pneumatique

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US (1) US10016878B2 (fr)
EP (2) EP2921260B1 (fr)
WO (1) WO2015140288A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10786886B2 (en) * 2016-11-01 2020-09-29 Dominion Technologies Group, Inc. Pneumatic crankshaft clamp assembly
KR102032416B1 (ko) * 2019-02-25 2019-10-15 김용구 내열형 에어 클램프 장치
CN112916817B (zh) * 2019-12-06 2023-03-21 汉达精密电子(昆山)有限公司 压铸件抓取装置
CN113500540A (zh) * 2021-07-28 2021-10-15 沭阳鑫洪锐金属制品有限公司 一种连接紧固件

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DE29615157U1 (de) † 1996-01-09 1996-11-07 Tünkers Maschinenbau GmbH, 40880 Ratingen Kniehebelspann- und Greifvorrichtung
DE10013874A1 (de) † 2000-03-21 2001-09-27 Sta Co Mettallerzeugnisse Gmbh Kniehebelspannvorrichtung
EP1201370A2 (fr) † 2000-10-23 2002-05-02 DE-STA-CO Metallerzeugnisse GmbH Dispositif de serrage de pièces à usiner à actionnement électrique
DE102004040606B3 (de) † 2004-08-21 2006-01-12 Tünkers Maschinenbau Gmbh Als Gripper ausgebildete Kniehebelspannvorrichtung, insbesondere zur Verwendung im Karosseriebau der Kfz-Industrie
USRE41223E1 (en) † 1998-01-07 2010-04-13 Norgren Automotive, Inc. Clamp with improved internal cam action
EP2241402A1 (fr) † 2009-04-16 2010-10-20 VEP Automation S.r.l. Dispositif de verrouillage de pièces
EP2548700A1 (fr) † 2011-07-20 2013-01-23 UNIVER S.p.A. Outil pneumatique

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EP2921260A1 (fr) 2015-09-23
EP2921260B1 (fr) 2016-08-31
EP2921261A1 (fr) 2015-09-23
WO2015140288A1 (fr) 2015-09-24
EP2921261B1 (fr) 2016-11-02
US20160167202A1 (en) 2016-06-16
US10016878B2 (en) 2018-07-10

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