EP0184079A2 - Dispositif pour transférer des pièces dans une presse de formage à postes multiples - Google Patents

Dispositif pour transférer des pièces dans une presse de formage à postes multiples Download PDF

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Publication number
EP0184079A2
EP0184079A2 EP85114814A EP85114814A EP0184079A2 EP 0184079 A2 EP0184079 A2 EP 0184079A2 EP 85114814 A EP85114814 A EP 85114814A EP 85114814 A EP85114814 A EP 85114814A EP 0184079 A2 EP0184079 A2 EP 0184079A2
Authority
EP
European Patent Office
Prior art keywords
gripper
coupling
gripper tongs
movement
workpieces
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
EP85114814A
Other languages
German (de)
English (en)
Other versions
EP0184079A3 (en
EP0184079B1 (fr
Inventor
Klaus Blei
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.)
L Schuler GmbH
Original Assignee
L Schuler GmbH
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 L Schuler GmbH filed Critical L Schuler GmbH
Publication of EP0184079A2 publication Critical patent/EP0184079A2/fr
Publication of EP0184079A3 publication Critical patent/EP0184079A3/de
Application granted granted Critical
Publication of EP0184079B1 publication Critical patent/EP0184079B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K27/00—Handling devices, e.g. for feeding, aligning, discharging, Cutting-off means; Arrangement thereof
    • B21K27/02—Feeding devices for rods, wire, or strips
    • B21K27/04—Feeding devices for rods, wire, or strips allowing successive working steps

Definitions

  • the invention relates to a device for conveying workpieces from one processing stage to the next in a multi-stage press for massive forming with gripper tongs that can be moved back and forth in the conveying direction and perpendicularly to it, each gripper tongs being arranged in the extension of a coupling articulated by two driven swing arms.
  • Devices of the type are used to transfer workpieces from tool to tool. It is necessary for the workpieces to be located between the male and female dies at the correct time of the ram movement (movement of the male part) and for the workpieces to be gripped again by the gripper tongs which have moved back to the previous processing stage, depending on the movement of the ejector plunger. Often, workpieces are also to be formed that have asymmetrical molded parts or polygonal approaches. These workpieces must not be rotated during the transfer movement.
  • DE-PS 11 44 085 shows a device for transferring workpieces from one tool to the subsequent tool in a multi-stage press with a gripper tongs attached to a coupling.
  • Two swing arms are articulated to the coupling, which are operatively connected to a cam follower part of a cam control via swivel arms, push rods and other deflection means. When it is driven (rotation of a cam disc), each swing arm causes a partial movement of the gripper tongs.
  • the object of the invention is to provide a device of the generic type with a higher than previously possible number of cycles and with an improved possibility of coordinating the gripper operation to the plunger and ejector plunger movements, both the movement of the gripper towards the tools and away from them as well Movement of the gripper tongs in the conveying direction and in the direction opposite to the conveying direction can be brought about by a single drive means.
  • the workpieces are deposited in the subsequent machining step without twisting.
  • Advantages also result from the fact that only one drive means is required for the conversion movements of the gripper tongs.
  • the movement of each gripper tongs corresponds to the movement of the coupling point of each swing arm on the coupling.
  • the pivot points of the swing arms are fixed in the gun box.
  • the means and the design of the swing arms and the coupling for a constant parallel alignment of the coupling allow both the use of the device for active gripper tongs, parallel drive movements of all couplers, as well as the use of the device for inactive gripper tongs with a transfer movement depending on the ejector movement.
  • the transfer movements of workpieces 5 in the processing stages 2 and 3 and into the storage station 4 take place in accordance with FIGS. 1 and 2 by means of active gripper tongs 1 in the conveying direction 25.
  • the gripper tongs 1 are arranged in an end region 7 of a support plate 6 and essentially consist of tong legs 18, which can be pivoted about pivot points 19 by means of closer-opener part 17.
  • the support plate 6 forms a coupling articulated via swing arms 9 and extended beyond the articulation points 30.
  • each swing arm 9 takes place via a gearwheel 11, to which the swing arm 9 is rigidly connected, and via an intermediate gearwheel 12, which is connected to both gearwheels 11 and which is connected via a linkage rod 15, which is rigidly connected to the intermediate gearwheel 12, to a pendulum indexing gear 13 Connecting rod 14 is connected.
  • the connecting rod 14 connects all the connecting rods 15 for a synchronous transfer movement supply of the gripper tongs 1.
  • Gears 11 and intermediate gears 12 are rotatably mounted in a pliers box 20. At least the swing arms 9 belonging together in pairs are of equal length. The distance between the center bearings of the gearwheels 11 corresponds to the distance between the articulation points 30 of the swing arm 9 on the support plate 6.
  • the swing arms 9 are always in parallel alignment with one another during the movement and in the transfer / transfer stations for the workpieces also in a parallel alignment to the conveying direction 25
  • the movement of an articulation point 16 of the connecting rod 14 on the articulation rod 15 on a circular arc around the intermediate gear 12 can correspond to the movement of the pendulum locking gear 13 from rest to rest; an intermediate gear is thus avoided.
  • the movement 10 'of the workpieces 5 corresponds to the movement 10 of the coupling points 30.
  • a coupling 21 is introduced for transmitting the movement for the gripper tongs activities.
  • the coupling 21 can consist of a guide groove 23 which is introduced into the actuating rod 22 transversely to the longitudinal extent of an actuating rod 22 which is displaceably mounted on the support plate 6 and is operatively connected to the closer-opener part 17.
  • a sliding block 24 is slidably mounted in the guide groove 23 and is connected to an articulated shaft 26 via a cranked lever 33.
  • the articulation shaft 26 is rotated from a cam follower part 28, which is placed on a control cam 27 by means of a pressure cylinder 31 via a roller 29 and the cam profiling takes place during its rotation.
  • the linear movement of the cam follower part 28 is deflected via a cranked lever 32 into a rotational movement and into a counter-rotating movement of the propeller shaft 26.
  • the conversion of the rotary movements of the cardan shaft 26 into a linear movement that adjusts the closer / opener part 17 takes place via the cranked lever 33.
  • the opening and closing movements of the gripper tongs 1 and their conversion movements for the workpieces 5 are due to the ejecting process of the workpieces 5 from in the processing stages 2, 3 and to match the movement of the press ram holding the male.
  • FIG. 3 illustrates these dependencies.
  • the gripper tongs 1 move against the conveying direction 25 (FIG. 1) without workpieces 5.
  • the pendulum gear 13 (FIG. 1) is locked , the ejector activity drops and the gripper tongs 1 must be closed.
  • the gripper tongs 1 must be opened to transfer the workpieces 5. Takeover, transfer and transfer of the workpieces 5 and part of the movement of the gripper tongs 1 with the workpiece 5 from the tool area takes place in the movement phase of the ram after opening and before closing the tools.
  • Control cams 27 and the movement-transmitting means 28, 29, 31, 32, 26, 33, 22 are to be provided in the number of gripper tongs 1 to be controlled.
  • each of the Intermediate gearwheels 12 take place here, for example, each from a control cam 52 via a cam follower part 50, which is attached to the control cam 52 via a roller 51, and a connecting rod 49 articulated to the articulation point 16 of the connecting rod 15 rigidly connected to the intermediate gearwheel 12 here is a support rod 46, on the area of which, in addition to the coupling, an area that extends in pairs and is paired with pliers legs 47 are mounted in pivot points 53.
  • the holding force for the workpieces 5 is caused by a compression spring 48.
  • the gear ratios, their translation, the lengths of the swing arm 9 and the bearing and pivot points correspond to those of the dimensions described for FIGS. 1 and 2.
  • the gripper tongs 41 are adjusted to take over the workpieces 5 at the end of the ejection movement of the workpieces 5 from the die into the workpiece area. On the one hand, this results in the individual drive of each gripper tongs, and on the other hand, the movements of the gripper tongs 41 towards the workpieces 5 can be adjusted via variable envelopes of the control curve 52, in particular with regard to the time at which the workpieces 5 are detected.
  • the conversion of the linear movement of cam follower part 50 and connecting rod ge 49 in rotary movements of the intermediate gear 12 is carried out via a cranked lever 54th
  • the diagram in FIG. 6 shows the variable range of the transfer of the workpiece 5 from the tool, which falls into the working range of the ejector, and the variable range of the transfer of the workpiece 5 to the tool before the return movement of the gripper tongs 41 in the direction opposite to the conveying direction 25 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manipulator (AREA)
  • Forging (AREA)
EP85114814A 1984-12-01 1985-11-21 Dispositif pour transférer des pièces dans une presse de formage à postes multiples Expired EP0184079B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843443874 DE3443874A1 (de) 1984-12-01 1984-12-01 Vorrichtung zum foerdern von werkstuecken in einer mehrstufenpresse fuer die massivumformung
DE3443874 1984-12-01

Publications (3)

Publication Number Publication Date
EP0184079A2 true EP0184079A2 (fr) 1986-06-11
EP0184079A3 EP0184079A3 (en) 1987-10-21
EP0184079B1 EP0184079B1 (fr) 1989-07-19

Family

ID=6251655

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85114814A Expired EP0184079B1 (fr) 1984-12-01 1985-11-21 Dispositif pour transférer des pièces dans une presse de formage à postes multiples

Country Status (2)

Country Link
EP (1) EP0184079B1 (fr)
DE (2) DE3443874A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH712402A1 (de) * 2016-04-28 2017-10-31 Hatebur Umformmaschinen Ag Transportvorrichtung mit Greifzangen zum Umsetzen von Werkstücken in einer mindestens zwei Stufen umfassenden Umformeinrichtung.
CH712403A1 (de) * 2016-04-28 2017-10-31 Hatebur Umformmaschinen Ag Transportverfahren zum Umsetzen von Werkstücken zwischen mehreren aufeinanderfolgenden Stufen einer Bearbeitungseinrichtung.
CH712401A1 (de) * 2016-04-28 2017-10-31 Hatebur Umformmaschinen Ag Transportvorrichtung zum Umsetzen von Werkstücken in einer mindestens zwei Stufen umfassenden Bearbeitungseinrichtung.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19545570A1 (de) 1995-12-07 1997-06-12 Schuler Pressen Gmbh & Co Transfereinrichtung für Mehrstationenpressen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2741581B2 (de) * 1977-09-13 1979-11-15 Nedschroef Octrooi Maatschappij N.V., Helmond (Niederlande) Vorrichtung zum Transport von Bolzen, Muttern o.dgl. Werkstücken auf Mehrstufenbearbeitungsmaschinen
DE2148529C2 (de) * 1971-09-29 1982-08-26 L. Schuler GmbH, 7320 Göppingen Fördereinrichtung zum Transport von Werkstücken von einer Matrize zur nächsten an Mehrstufenpressen
DE2434540C2 (de) * 1974-07-18 1983-09-08 Hatebur Umformmaschinen AG, Basel Einrichtung zum automatischen Quertransport von Werkstücken auf mehrstufigen Umformpressen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2148529C2 (de) * 1971-09-29 1982-08-26 L. Schuler GmbH, 7320 Göppingen Fördereinrichtung zum Transport von Werkstücken von einer Matrize zur nächsten an Mehrstufenpressen
DE2434540C2 (de) * 1974-07-18 1983-09-08 Hatebur Umformmaschinen AG, Basel Einrichtung zum automatischen Quertransport von Werkstücken auf mehrstufigen Umformpressen
DE2741581B2 (de) * 1977-09-13 1979-11-15 Nedschroef Octrooi Maatschappij N.V., Helmond (Niederlande) Vorrichtung zum Transport von Bolzen, Muttern o.dgl. Werkstücken auf Mehrstufenbearbeitungsmaschinen

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH712402A1 (de) * 2016-04-28 2017-10-31 Hatebur Umformmaschinen Ag Transportvorrichtung mit Greifzangen zum Umsetzen von Werkstücken in einer mindestens zwei Stufen umfassenden Umformeinrichtung.
CH712403A1 (de) * 2016-04-28 2017-10-31 Hatebur Umformmaschinen Ag Transportverfahren zum Umsetzen von Werkstücken zwischen mehreren aufeinanderfolgenden Stufen einer Bearbeitungseinrichtung.
CH712401A1 (de) * 2016-04-28 2017-10-31 Hatebur Umformmaschinen Ag Transportvorrichtung zum Umsetzen von Werkstücken in einer mindestens zwei Stufen umfassenden Bearbeitungseinrichtung.
WO2017186672A1 (fr) * 2016-04-28 2017-11-02 Hatebur Umformmaschinen Ag Dispositif de transport pour déplacer des pièces dans un dispositif d'usinage
WO2017186673A1 (fr) * 2016-04-28 2017-11-02 Hatebur Umformmaschinen Ag Dispositif de transport à pinces de préhension
US20190134694A1 (en) * 2016-04-28 2019-05-09 Hatebur Umformmaschinen Ag Transport Apparatus for Transferring Workpieces in a Processing Device
US10537932B2 (en) 2016-04-28 2020-01-21 Hatebur Umformmaschinen Ag Transport method for transferring workpieces
US10737313B2 (en) * 2016-04-28 2020-08-11 Hatebur Umformmaschinen Ag Transport apparatus for transferring workpieces in a processing device

Also Published As

Publication number Publication date
EP0184079A3 (en) 1987-10-21
DE3571564D1 (en) 1989-08-24
DE3443874A1 (de) 1986-07-10
EP0184079B1 (fr) 1989-07-19

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