EP0314888B1 - Kupplungsvorrichtung für Greiferschienenabschnitte einer Transfereinrichtung - Google Patents

Kupplungsvorrichtung für Greiferschienenabschnitte einer Transfereinrichtung Download PDF

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Publication number
EP0314888B1
EP0314888B1 EP88113586A EP88113586A EP0314888B1 EP 0314888 B1 EP0314888 B1 EP 0314888B1 EP 88113586 A EP88113586 A EP 88113586A EP 88113586 A EP88113586 A EP 88113586A EP 0314888 B1 EP0314888 B1 EP 0314888B1
Authority
EP
European Patent Office
Prior art keywords
gripper rail
sleeve
centring
rail portion
tightening rod
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
EP88113586A
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German (de)
English (en)
French (fr)
Other versions
EP0314888A3 (en
EP0314888A2 (de
Inventor
Günter Zierpka
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0314888A2 publication Critical patent/EP0314888A2/de
Publication of EP0314888A3 publication Critical patent/EP0314888A3/de
Application granted granted Critical
Publication of EP0314888B1 publication Critical patent/EP0314888B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/05—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work specially adapted for multi-stage presses
    • B21D43/057—Devices for exchanging transfer bars or grippers; Idle stages, e.g. exchangeable

Definitions

  • the invention relates to a coupling device for the fixed, but optionally separable connection of gripper rail sections of a transfer device for the gradual material and / or workpiece transport, in particular in presses, with centering means interacting in the coupling position of the gripper rail sections and extending beyond the separation point between these gripper rail sections , in a gripper rail section axially movably and rotatably mounted and a clamping surface having a holding surface of one end part of the other gripper rail section behind a clamping head, which can be clamped axially between the gripper rail sections and brought out of engagement with the holding surface of the end part of the one gripper rail section as a result of rotation about its longitudinal axis with its clamping head and can be pulled axially out of its engagement position projecting into said end part.
  • Such tools are usually with transfer systems for gradual material and / or Workpiece transport coupled, the actual transfer device being assigned to the machine tool or press. It is therefore necessary, on the one hand, to dissolve the gripper rails of such transfer systems into those rail sections which are assigned to the machine tool or press, and on the other hand to rail sections assigned to the respective tool.
  • the tool-side and machine-side gripper rail sections must be easily and quickly coupled and disconnectable again, because when changing the tool, the tool-side gripper rail sections must be removed from the machine tool or press in addition to the tool.
  • a generic coupling device of the type specified at the beginning also appears to be in need of improvement, in which the coupling or uncoupling of a tool-side gripper rail section with a machine-side gripper rail section succeeds in such a way that after the retraction of one equipped with tool-side gripper rail sections and on a shuttle table received tool into a press with the gripper rail sections aligned with one another, a tension rod is inserted through a corresponding longitudinal recess, which extends in the end part of the tool-side gripper rail section, and then rotated with its clamping head into a locking position engaging behind the holding surface of the end part, in the region of the separation point at the Ends of the gripper rail sections to be coupled in each case centering means are arranged in the form of interacting cones which convey a precise assignment of the parts to be coupled to one another.
  • centering means are arranged in the form of interacting cones which convey a precise assignment of the parts to be coupled to one another.
  • the coupling device according to DE-OS 3501946 is characterized by a simple device structure, but when coupling or uncoupling the press and tool-side gripper rail sections, these must be moved in the longitudinal direction of the gripper rail in order to arrange the centering means arranged in the area of the separation point, which act as a cone and counter cone are designed to bring together or to separate so that a tool with the gripper rail sections on the tool side perpendicular to the gripper rail longitudinal extension can be inserted into or removed from a press.
  • the axial displacement of the gripper rail sections which is necessary when coupling or uncoupling has an effect in particular in the case of a larger number of tools which are linked to one another via a transfer device problematic because then the required displacement paths in the area of the respective separation points add up.
  • the problem underlying the invention is therefore directed to the creation of an improved coupling device for the gripper rail sections of a transfer device, which can, however, be detachably coupled, in which no coupling or uncoupling of the respective gripper rail sections is required, and consequently the chaining also of a larger number of tools or similar facilities work well together.
  • a coupling device of the type specified at the outset by a centering piece which is operatively connected to the tension rod and is accommodated in the gripper rail section which is supported in the latter and which is clamped in the coupling position between the then coupled gripper rail sections and by bridging the separation point into an end-face centering recess in the end part of the engages a gripper rail section, but can be withdrawn from the centering recess when the tensioning rod is released when uncoupling.
  • the invention makes use of the centering pieces assigned to each gripper rail section, which are operatively connected to the tension rod and in engage the coupling position in an end recess of the other gripper rail section, but when uncoupling, like the tensioning rod, can be withdrawn from its engagement position in the other gripper rail section.
  • the coupling and uncoupling of gripper rail sections thus succeeds without these having to perform any type of axial movement relative to one another, because the centering piece associated with the one gripper rail section and which engages in the coupling position in a centering recess of the other gripper rail section is operatively connected to the tension rod.
  • the centering piece as a centering sleeve which is guided coaxially with the tensioning rod in the gripper rail section bearing this and which is rotatably mounted on the tensioning rod but axially movable within predetermined limits and in the coupling position by rotation about its longitudinal axis on the back, that is to say on the side facing away from the clamping head, can be supported on stops which are arranged in the gripper rail section which supports the clamping rod and which engage in circumferential recesses arranged thereon when the centering sleeve is not in the coupling position.
  • This rotation corresponds to the required rotation of the tension rod in order to bring its tension head into a position that engages behind the holding surface in the end part of the gripper rail section to be coupled. If the tensioning rod is then tensioned in the manner practiced in the previously known device according to DE-OS 3501946, the centering sleeve is braced between the end part of the gripper rail section to be coupled and the stops supporting the centering sleeve on the rear side of the other gripper rail section, so that a form-fittingly firm and perfect Centered coupling connection is made, which meets all requirements for such a coupling device and is able to absorb any bending moments that may occur.
  • the uncoupling process takes place in the opposite way in that first the tensioning effect of the tension rod is canceled and then this is turned with its tension head into a position in which the tension head no longer engages behind the holding surface in the end part of the one gripper rail section and the tension rod axially from the mentioned end part is extractable.
  • the tension rod is rotated, the rear support of the centering sleeve is attached to the Stops of the gripper rail section supporting the tension rod are canceled so that when the tension rod is withdrawn from its engagement position in said end part, the centering sleeve is also pulled out of its engagement position in the frontal centering recess of said end part.
  • the mutually assigned front ends of the gripper rail sections are spaced from one another, so that a tool with gripper rail sections on the tool side can be moved essentially perpendicularly to the gripper rail longitudinal extension from the previous coupling position.
  • a centering sleeve is also used as the centering piece, which is received in the gripper rail section bearing the tension rod in an axially movable but non-rotatable manner and in the coupling position engages in a form-fitting manner in the centering recess in the end part of the other gripper rail section and is supported on the back on a support sleeve.
  • This embodiment differs from the first embodiment explained in that the centering sleeve is rotatably guided in the gripper rail section supporting the tension rod and the centering sleeve is assigned a support sleeve which is rotatable relative to the gripper rail section and is axially movable but rotatably mounted on the tension rod to a limited extent.
  • This configuration thus enables a torsionally rigid connection of the gripper rail sections to be coupled to one another, the coupling and uncoupling taking place in a manner corresponding to that in the first configuration.
  • the centering sleeve can expediently have at least one longitudinal wedge projecting radially above it and guided in a longitudinal groove, which in the coupling position engages in a longitudinal groove arranged in the region of the centering recess in the end part of the other gripper rail section.
  • the centering sleeve or the support sleeve on the side facing away from the clamping head of the clamping rod has axially extending support claws between circumferential recesses and that similar support claws are provided as stops for the rear support of the centering sleeve or the support sleeve in the coupling position which with the centering sleeve withdrawn from the coupling position engage in the circumferential recesses between the support claws of the centering sleeve or support sleeve and on which, in the coupling position, the support claws of the centering sleeve or support sleeve are supported on the end face after their rotation by a circumferential angle corresponding to the pitch between the support claws.
  • This configuration is a design of similarly known claw couplings, the claws of the centering sleeve or support sleeve and the claws of the gripper rail section being supported on the end face against one another in the coupling position, on the other hand engaging in the decoupled position with the centering sleeve withdrawn from its centering position.
  • the centering sleeve or the support sleeve and on the back thereof the gripper rail section supporting the tensioning rod are each provided with two support claws each extending over a circumferential angle of 90 ° and offset from one another by 180 °.
  • a particularly simple construction results if, according to yet another development of the invention, a support body with support claws extending to the front end of the gripper rail section supporting the tensioning rod section and through which the tension rod extends is arranged in the guide receiving the centering sleeve or support sleeve .
  • the press 10 which is only indicated in FIG. 1, has a changing table 12 which can be moved in a known manner on rails 11 between the position shown in the press and an unillustrated mounting position outside the press, on which a tool (not shown) is accommodated. Furthermore, the press is equipped with a transfer device 14, which is only indicated, and which has two gripper rails 17 which extend parallel to one another through the press at a distance from one another and together back and forth in accordance with double arrow 15 and in accordance with the double arrow 16 in a manner which is of no further interest here.
  • Each of these gripper rails consists of two gripper rail sections 18, 18 'assigned to the press and a gripper rail section 19 which, with the two gripper rail sections guided in the press, is connected in separation points 20, 20', but can be detachably coupled, and which is received on the shuttle table 12 of the press 10 Tool is assigned.
  • FIG. 2 shows the fixed connection of one of the press-side gripper rail sections 18 to one of the tool-side gripper rail sections 19, whereas the sectional view according to FIG. 5 shows the two gripper rail sections 18, 19 in the uncoupled state.
  • Serving as coupling means are a tension rod 22 which is rotatably and axially movably mounted in the press-side gripper rail section 18 and a centering sleeve 24 which is operatively connected to this and which is received in a guide 25 of the gripper rail section 18 which supports the tension rod and is open at the end.
  • the centering sleeve 24 is mounted on the tension rod 22 and is received between a hammer head-like tension head 26 at the front end of the tension rod and a shoulder 27 arranged at a distance therefrom.
  • the centering sleeve 24 is axially movable in the region between the clamping head 26 and said shoulder 27 of the clamping rod 22 and has two rearward-facing claws 28, 28 ', each of which extends over a 90 ° circumferential angle and is offset by 180 °.
  • a support body 30 Within the centering sleeve 24 receiving guide 25 is rotatably and axially fixed a support body 30, through which the tension rod 22 extends in a central recess 31 with play and the two towards the centering sleeve 24 towards supporting claws 32, 32 ', which is also about extend a circumferential angle of 90 ° and are offset from each other by 180 °.
  • the front end of the tool-side gripper rail section 19 is provided with an end-face centering recess 34 adapted to the diameter of the centering sleeve 24 and in the center of this centering recess extends through the end part of this gripper rail section an elongated hole-like recess 35, the cross section of which is dimensioned such that in one rotational position the Tensioning rod 22, the tensioning head 26 can be passed through this slot-like recess, while in a position of the tensioning rod rotated by 90 °, the tensioning head with its tensioning surfaces 36 arrives in a position engaging behind a retaining surfaces 37 of this longitudinal recess.
  • the tensioning rod 22 can be actuated by means of drive means arranged in the gripper rail section 18, which are not shown in the drawing.
  • the clamping rod 22 extends with play through the slot-like recess 35 in the end part of the tool-side gripper rail section 19 and engages with its hammer head-like clamping head 26 at the end remote from the press-side gripper rail section 18, a holding surface 36 inside of the end part of the tool-side gripper rail section 19, as a result of which the two gripper rail sections are held in their coupling position in the manner shown in FIG. 2 in particular.
  • centering sleeve 24 engages in the frontal centering recess 34 in the end part of the tool-side gripper rail section 19 and is supported with its rear claws 28, 28 'on the front side on the claws 32, 32' of the guide 25 of the tool-side gripper rail section 18 rotatably and axially fixed Support body 30 from.
  • the holding surface 37 in the end part of the gripper rail section 19 on the tool side and the clamping surface 36 of the clamping head 26 cooperating therewith in the coupling position are designed as matching cones.
  • the clamping force required to maintain the coupling position is applied by the actuating means for the clamping rod 22 mentioned in the press-side gripper rail section 18. Otherwise, the clamping rod 22 is axially movable and rotatably received in the press-side gripper rail section 18 by the actuating means mentioned and the recess 35 in the end part of the gripper rail section 19 is transverse to one direction 2 and 3, the coupling position of the clamping head 26 is dimensioned such that the clamping head 26 of the clamping rod can be pulled out of its engagement position and overall from the end part of the tool-side gripper rail section 19 through this recess in a corresponding rotational position.
  • the double arrow 38 and the rotary arrow 39 in FIG. 2 indicate the axial movability and rotatability of the tension rod.
  • the clamping rod 22 has to be axially a small amount in the direction of the tool side from the illustrated clamping position according to arrow 38 within the scope of the axial play between the centering sleeve and the shoulder 27 of the clamping rod Gripper rail section 19 can be moved. Thereafter, the clamping rod 22 is brought into a rotational position according to the arrow 39, in which the clamping head 26 comes from a position which engages behind the holding surfaces 37 in the end part 19 and, through the recess 35, which is widened at right angles to the clamping position, from the engagement position in the end part of the tool-side gripper rail section 19 according to arrow 38 can be pulled out.
  • the coupling process takes place in an analogous manner, but in the reverse order of the above-described processes, the centering sleeve 24 being advanced by the shoulder 27 of the clamping bar when the tensioning rod 22 is pushed into its engagement position with the gripper rail section 19 on the tool side and into its engagement position in the centering recess 34 is brought in the tool-side gripper rail section.
  • the tensioning rod is rotated into a position in which the tensioning head 26 engages behind the holding surfaces 37, the centering sleeve experiences a rotation through 90 °, as a result of which the claws 28, 28 ' get into an aligned with the claws 32, 32 'of the support sleeve.
  • the centering sleeve When the tensioning rod is tensioned, the centering sleeve experiences tension between the end part of the tool-side gripper rail section 19 and the end faces of the claws 32, 32 'of the support body 30 received in the guide 25 of the press-side gripper rail section 18.
  • FIGS. 9 to 11 differs from the first embodiment in the main by a rear side of the Centering sleeve 124 in a guide 125 received support sleeve 124 'which is rotatably, but limited axially movable on the axially extending through the centering sleeve 122 extending rod.
  • the tension rod 122 is an axially fixed in a groove in the tension rod spring 140 which engages with limited play in a in the region of the hub bore in the support sleeve 124' extending longitudinal groove.
  • the support sleeve has two adjoining claws 128, 128 'at the hub part offset from one another by 180 °, each of which extends over a circumferential area of 90 °, so that two free spaces corresponding to the shape of the support claws are formed between the support claws.
  • the rest of the support sleeve is guided in a guide 125 at the end of the press-side gripper rail section and in the depth of the guide, in the same way as in the support body 30 of the first embodiment, mutually opposite support claws 132, 132 'are arranged, which fit into the circumferential recesses between the support claws 128, 128' of the support sleeve 124 'when the support sleeve is in its retracted position corresponding to the decoupled position.
  • the rearward-facing support claws 128, 128 ' are therefore not assigned to the centering sleeve 124, but to a support sleeve 124' separate therefrom.
  • the centering sleeve is designed as a splined shaft and engages with corresponding longitudinal wedges 145 in longitudinal grooves 146 in the guide of the gripper rail section 118 on the press side.
  • the longitudinal wedges of the centering sleeve corresponding longitudinal grooves are also arranged in the centering recess 134 of the end part of the tool-side gripper rail section 119, in which engages in the coupling position the end of the centering sleeve 124 'remote from the support sleeve 124', so that in this position a rotationally fixed connection between the press side and tool-side gripper rail sections is realized.
  • a tool-side gripper rail section 119 is to be coupled to a press-side gripper rail section 118, the tensioning rod 122 is in a retracted position similar to FIG. 5, the claws 128, 128 'of the support sleeve 124' being the support claws permanently assigned to the press-side gripper rail section Take 132, 132 'between them and the centering sleeve 124 is in a retracted position relative to the free end of the press-side gripper rail section.
  • the clamping rod 122 of the respective press-side gripper rail section is advanced, with the collar 127 of the clamping rod 122 arranged on the rear side of the support sleeve on the back the support sleeve 124 'strikes and this and the centering sleeve 124 within the end guide of the press-side gripper rail section advances until the centering sleeve engages in the centering recess 134 in the end part of the tool-side gripper rail section and the clamping head 126 of the tension rod is passed through the slot-like recess in the end part of the other gripper rail section .
  • the coupling process is then completed by tensioning the tensioning rod 122 against its original direction of movement, whereby the centering sleeve 124 is braced between the gripper rail sections via the support sleeve 124 'supported on the support claws 132, 132' of the press-side gripper rail section.
  • the uncoupling process takes place in reverse, which has already been explained above in connection with the first embodiment.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Assembly (AREA)
  • Intermediate Stations On Conveyors (AREA)
  • Specific Conveyance Elements (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Forging (AREA)
EP88113586A 1987-10-07 1988-08-22 Kupplungsvorrichtung für Greiferschienenabschnitte einer Transfereinrichtung Expired - Lifetime EP0314888B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3733881 1987-10-07
DE19873733881 DE3733881A1 (de) 1987-10-07 1987-10-07 Kupplungsvorrichtung zum festen, jedoch wahlweise trennbaren verbinden von greiferschienenabschnitten einer transfereinrichtung zum schrittweisen material- und/oder werkstuecktransport

Publications (3)

Publication Number Publication Date
EP0314888A2 EP0314888A2 (de) 1989-05-10
EP0314888A3 EP0314888A3 (en) 1989-09-20
EP0314888B1 true EP0314888B1 (de) 1991-08-14

Family

ID=6337797

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88113586A Expired - Lifetime EP0314888B1 (de) 1987-10-07 1988-08-22 Kupplungsvorrichtung für Greiferschienenabschnitte einer Transfereinrichtung

Country Status (2)

Country Link
EP (1) EP0314888B1 (enrdf_load_stackoverflow)
DE (2) DE3733881A1 (enrdf_load_stackoverflow)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4968380A (en) * 1989-05-24 1990-11-06 Mobil Solar Energy Corporation System for continuously replenishing melt
DE9000189U1 (de) * 1990-01-09 1991-05-08 Grote & Hartmann Gmbh & Co Kg, 42369 Wuppertal Zuführvorrichtung für elektrische Verbinder in Crimpwerkzeuge einer Crimpmaschine
DE4221441C2 (de) * 1992-06-30 2003-04-17 Grob Werke Burkhart Grob Ek Transferstraße
DE4309237A1 (de) * 1993-03-23 1994-09-29 Schuler Gmbh L Vorrichtung zum Kuppeln und Entkuppeln bzw. zum Verriegeln und Entriegeln von Ausbau-/Austauschteilen, wie Werkzeuge, Greiferschienenteilstücke u. dgl.
DE4309643C2 (de) * 1993-03-25 2002-06-13 Schuler Pressen Gmbh & Co Umsetzeinrichtung für den Werkstücktransport
DE4320431B4 (de) * 1993-06-21 2004-08-19 Müller Weingarten AG Transferpressenkomplex
DE19716266C1 (de) * 1997-04-18 1998-09-03 Berg & Co Gmbh Kupplung zur lösbaren Verbindung von Greiferschienen einer Transferpresse

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3150508C1 (de) * 1981-12-21 1983-11-17 Maschinenfabrik Müller-Weingarten AG, 7987 Weingarten Vorrichtung zur lösbaren Verbindung von Greiferschienenteilen der Greiferschienen in einer Transfer-Presse
DE3233102C1 (de) * 1982-09-07 1983-05-19 Maschinenfabrik Müller-Weingarten AG, 7987 Weingarten Vorrichtung zur lösbaren Verbindung von Greiferschienenteilen der Greiferschienen in einer Transfer-Presse
DE3235308A1 (de) * 1982-09-24 1984-03-29 L. Schuler GmbH, 7320 Göppingen Pressen-einheit mit zugleich mit dem werkzeugwechsel auszutauschenden greiferschienen
DE3436075C1 (de) * 1984-10-02 1985-04-25 Maschinenfabrik Müller-Weingarten AG, 7987 Weingarten Vorrichtung zur Ioesbaren Verbindung von Greiferschienenteilen der Greiferschienen in einer Transfer-Presse
DE3437241A1 (de) * 1984-10-11 1986-04-17 L. Schuler GmbH, 7320 Göppingen Vorrichtung zum kuppeln und entkuppeln von greiferschienenteilstuecken einer transferpresse
DE3501946A1 (de) * 1985-01-22 1986-07-24 Günter 7500 Karlsruhe Zierpka Transfereinrichtung zum schrittweisen material- und/oder werkstuecktransport, insbesondere in pressen
DE3520343A1 (de) * 1985-06-07 1986-12-11 L. Schuler GmbH, 7320 Göppingen Vorrichtung zum kuppeln und entkuppeln von greiferschienenteilstuecken einer transferpresse

Also Published As

Publication number Publication date
DE3733881C2 (enrdf_load_stackoverflow) 1990-02-08
EP0314888A3 (en) 1989-09-20
DE3864237D1 (de) 1991-09-19
EP0314888A2 (de) 1989-05-10
DE3733881A1 (de) 1989-04-20

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