EP0392371A2 - Entraînement d'un éjecteur situé du côté du poinçon et coulissant dans le coulisseau d'une presse mécanique de formage - Google Patents

Entraînement d'un éjecteur situé du côté du poinçon et coulissant dans le coulisseau d'une presse mécanique de formage Download PDF

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Publication number
EP0392371A2
EP0392371A2 EP90106573A EP90106573A EP0392371A2 EP 0392371 A2 EP0392371 A2 EP 0392371A2 EP 90106573 A EP90106573 A EP 90106573A EP 90106573 A EP90106573 A EP 90106573A EP 0392371 A2 EP0392371 A2 EP 0392371A2
Authority
EP
European Patent Office
Prior art keywords
drive
articulated
lever
ram
ejector
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
EP90106573A
Other languages
German (de)
English (en)
Other versions
EP0392371B1 (fr
EP0392371A3 (fr
Inventor
Günther Riedisser
Oswald Barodte
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 EP0392371A2 publication Critical patent/EP0392371A2/fr
Publication of EP0392371A3 publication Critical patent/EP0392371A3/fr
Application granted granted Critical
Publication of EP0392371B1 publication Critical patent/EP0392371B1/fr
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
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/08—Accessories for handling work or tools
    • B21J13/14—Ejecting devices

Definitions

  • the invention relates to a drive for a slide-side ejector mounted displaceably in a ram of a mechanical forming press, with an angle lever pivotably mounted in the ram, one leg of which acts on the end of the ejector facing away from the male part and the other leg of which is in drive connection with a handlebar stands, which is articulated on a drive connecting rod for the tappet and transmits drive movements intermittently to the bell crank.
  • a pin-shaped ejector penetrating the male part see e.g. DE 28 27 561 A1
  • an ejector sleeve surrounding the patrix of existing ejectors for workpieces that are sleeve-shaped or have a central recess see e.g. DE 925 566 C3 to understand.
  • a drive of the type mentioned is known for example from DE 16 27 977 B2.
  • the drive connection is made from the handlebar to the other leg of the angle lever via a further angle lever, which is pivotally mounted in the frame of the press and the arm is articulated on one leg.
  • the other leg of this further angle lever carries an actuating plate on which the other leg of the angle lever actuating the ejector is held in contact via a roller.
  • the possible stroke of the Ram is limited by the length of the actuating plate, on which the roller must remain in contact.
  • a plunger adjustment to adapt to different heights of the die and patrix is neither provided here nor can it be provided with regard to the possible length of the actuating plate.
  • a drive for a male-side ejector mounted displaceably in a ram of a mechanical forming press with a lever pivotably mounted in the ram is known from DE 10 63 013 C3.
  • the lever is here with one arm, the outer end of which acts on the end of the ejector facing away from the male part, while a control curve is formed in a region closer to the articulation, on which a roller mounted in a handlebar rolls for actuating the ejector.
  • the handlebar is articulated on a drive connecting rod for the tappet and is supported by a rocker arm articulated on the handlebar and the tappet. Adaptation to different heights of the female and male molds is only possible to a very limited extent using a cross-adjustable wedge.
  • the two known drives have the disadvantage in common that the actuating force for the scraper is transmitted via a roller and an area on which it rolls. This results in only a linear contact, which is not suitable for the transmission of larger stripper forces and is subject to considerable wear and tear during continuous operation.
  • the object on which the invention is based is to avoid an actuation surface-roller pairing with only linear contact in the drive connection and to design the drive connection in such a way that a ram adjustment is provided to adapt to different heights of the die and the male can and their operation does not affect the function of the drive connection for the ejector.
  • the drive connection extends a two-armed lever, at least whose remote from the angle lever extends approximately parallel to the direction of movement of the plunger, at the end remote from the angle lever, the link and the is pivotally mounted on a bolt, and comprises a tab which is articulated with its two ends either to the other leg of the angle lever and to the end of the second lever facing this, the pickling is fastened to the plunger, or is articulated at one end to the plunger and at the other end carries the pickling, the other leg of the angle lever being articulated on the end of the two-armed lever facing this, and that the link is approximately at right angles to the direction of movement of the plunger.
  • the drive connection between the connecting rod serving to drive the tappet and the angle lever serving to drive the ejector each consists of a continuous link chain in which all connections can be designed as closed joints.
  • the at least with its two-armed lever facing away from the angle lever and approximately parallel to the direction of movement of the plunger bridges the area of the plunger in the drive connection in which the drive connecting rod is articulated, and enables an adjustment of this articulation in the plunger.
  • Such adjustments do not affect the function of the drive for the ejector because of the position of the handlebar approximately at right angles to the direction of movement of the ram.
  • the articulated chain is advantageously extended up to the connection with the ejector or a control pin acting on it.
  • the maximum of the stroke of the ejector during the return stroke of the ram results approximately at the position of the drive rod, which is reached 90 o crank angle after the bottom / front dead center.
  • the invention can be used both in forming presses with a vertical direction of movement of the ram and in those with a horizontal direction of movement of the ram, both in single-stage and in multi-stage forming presses.
  • the main drive shaft 2 is mounted in a frame 1 of the forming press and can be driven by a motor (not shown) via a gearwheel 3 and an upstream pinion 7.
  • the main drive shaft 2 carries an eccentricity 4, on which a drive rod 5 is mounted, which is articulated at the other end on a plunger 6, which is guided in the frame 1 so that it can move vertically.
  • the articulation of the tappet 6 on the drive connecting rod 5 is produced by means of a bearing pin 8 which is mounted in an external thread adjustment part 9.
  • an internal thread adjusting sleeve 10 is provided, which is mounted in the plunger 6 so as to be axially immovable but rotatable and lockable.
  • the external thread-internal thread pairing is used to adjust the linkage in the plunger 6 in order to adapt the forming press to different heights of the die and the male.
  • a table-like clamping surface 11 is formed for a die, not shown, which is clamped thereon.
  • a die acts on the die on a tappet base 12 of the tappet 6 for.
  • a pin-shaped ejector penetrating this can be provided in the die and can be acted upon by a drive (not shown) for the same.
  • a pin-shaped ejector penetrating this is movably guided in the patrix.
  • a leg 14 of an angle lever 15 acts on the end of the ejector facing away from the engraving of the patrix.
  • the angle lever 15 is pivotally mounted on an axis 18 in the plunger 6.
  • the other leg 16 of the angle lever 15 is in drive connection with a link 17 which is at least approximately at right angles to the direction of movement of the plunger 6 and is articulated at one end on the drive connecting rod 5.
  • one end of a two-armed lever 19 is articulated on the handlebar 17 at the end facing away from the drive connecting rod 5, which lever is mounted in its central region on a pin 20 which is attached to the tappet 6 is attached.
  • a tab 21 is articulated, which is articulated at the other end on the leg 16 of the angle lever 15 facing away from the control pin 13.
  • the end of the leg 14 of the angle lever 15 facing the control pin 13 is held in contact with the end of the control pin 13 facing away from the male part.
  • one end of a two-armed lever 22 is articulated on the handlebar 17 at the end facing away from the drive connecting rod 5, which lever has an arcuate guide 23 in its central region in which a sliding block 24 can be adjusted and locked is stored.
  • the sliding block 24 has a bolt 25 which serves as a linkage for one end of a tab 26, the other end of which is articulated on the plunger 6.
  • the radius of the guide 23 is equal to the effective length of the lug 26.
  • the adjustment and locking of the sliding block 24 in the guide 23 is carried out by a screw spindle 27 pivotably mounted on the lever 22, which in FIG Axial direction fixed in the bearing on the lever 22, but can be rotated by means of a square 28.
  • a screw nut 29 is seated on the screw spindle 27 and is pivotably mounted in a lug 30 on the sliding block 24.
  • the end of the lever 22 facing away from the linkage of the link 17 is articulated on the leg 16 of the angle lever 15 facing away from the control pin 13.
  • the leg 14 of the angle lever 15 facing the control pin 13 is connected in an articulated manner to the control pin 13 at both ends via a further tab 31.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Adornments (AREA)
  • Punching Or Piercing (AREA)
EP90106573A 1989-04-12 1990-04-05 Entraînement d'un éjecteur situé du côté du poinçon et coulissant dans le coulisseau d'une presse mécanique de formage Expired - Lifetime EP0392371B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3911921A DE3911921A1 (de) 1989-04-12 1989-04-12 Antrieb fuer einen in einem stoessel einer mechanischen umformpresse verschieblich gelagerten, patrizenseitigen auswerfer
DE3911921 1989-04-12

Publications (3)

Publication Number Publication Date
EP0392371A2 true EP0392371A2 (fr) 1990-10-17
EP0392371A3 EP0392371A3 (fr) 1991-04-24
EP0392371B1 EP0392371B1 (fr) 1993-10-06

Family

ID=6378463

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90106573A Expired - Lifetime EP0392371B1 (fr) 1989-04-12 1990-04-05 Entraînement d'un éjecteur situé du côté du poinçon et coulissant dans le coulisseau d'une presse mécanique de formage

Country Status (6)

Country Link
US (1) US5031439A (fr)
EP (1) EP0392371B1 (fr)
CA (1) CA2014368C (fr)
DE (2) DE3911921A1 (fr)
ES (1) ES2045615T3 (fr)
RU (2) RU2071860C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0569819A1 (fr) * 1992-05-11 1993-11-18 SCHULER PRESSEN GmbH & Co. Entraînement d'un éjecteur situé du côté du poinçon dans une presse mécanique de formage

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5884520A (en) * 1997-11-17 1999-03-23 The Whitaker Corporation Die set having shut height adjust and stripper plate actuator mechanisms
DE19935657A1 (de) * 1999-07-29 2001-02-01 Schuler Pressen Gmbh & Co Presse mit Auswerfereinrichtung für unterschiedliche Auswerferhübe
GB2360235B (en) * 2000-03-10 2002-02-06 Platarg Engineering Ltd Workpiece ejector for transfer press
US7232539B2 (en) * 2003-06-20 2007-06-19 Jere F. Irwin Trim press, article ejecting device, trim press article ejector, and method of stacking and cleaning out thermoformed articles
CN103658492A (zh) * 2013-12-30 2014-03-26 江苏金源锻造股份有限公司 一种模锻压力机的自动顶料机构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3688322A (en) * 1970-07-08 1972-09-05 Nedschroef Octrooi Maats Machine for upsetting bolts and similar articles
US4044619A (en) * 1975-06-23 1977-08-30 Peltzer & Ehlers Device for controlling auxiliary means arranged in the reciprocating carriage of single or multistage presses
GB1516091A (en) * 1975-08-04 1978-06-28 Lamberton & Co Ltd Ejector mechanisms in machine presses
EP0241571A1 (fr) * 1986-04-16 1987-10-21 Th. Kieserling & Albrecht GmbH & Co. Mécanisme d'éjection au côté poinçon dans une presse

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2680860A (en) * 1949-05-03 1954-06-15 Nat Machinery Co Apparatus for forming hollow articles
DE1063013B (de) * 1952-10-10 1959-08-06 Nat Machinery Co Bolzenstauchpresse
DE1627977B2 (de) * 1967-02-06 1978-01-05 Vyzkumny ustav tvarecich stroju a technologie tvareni, Brunn (Tschechoslowakei) Auswerfvorrichtung an einer mechanischen presse
DD99131A1 (fr) * 1972-08-24 1973-07-20
DE2827561C2 (de) * 1978-06-23 1985-08-29 Th. Kieserling & Albrecht Gmbh & Co, 5650 Solingen Kurbelpresse mit stempelseitigem Auswerfer
DD219432A1 (de) * 1983-11-28 1985-03-06 Warnke Umformtech Veb K Tischauswerfer fuer pressen mit kurbeltrieb
DD235194A1 (de) * 1985-03-13 1986-04-30 Warnke Umformtech Veb K Stoesselauswerfer fuer kurbelpressen der massivumformung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3688322A (en) * 1970-07-08 1972-09-05 Nedschroef Octrooi Maats Machine for upsetting bolts and similar articles
US4044619A (en) * 1975-06-23 1977-08-30 Peltzer & Ehlers Device for controlling auxiliary means arranged in the reciprocating carriage of single or multistage presses
GB1516091A (en) * 1975-08-04 1978-06-28 Lamberton & Co Ltd Ejector mechanisms in machine presses
EP0241571A1 (fr) * 1986-04-16 1987-10-21 Th. Kieserling & Albrecht GmbH & Co. Mécanisme d'éjection au côté poinçon dans une presse

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0569819A1 (fr) * 1992-05-11 1993-11-18 SCHULER PRESSEN GmbH & Co. Entraînement d'un éjecteur situé du côté du poinçon dans une presse mécanique de formage

Also Published As

Publication number Publication date
US5031439A (en) 1991-07-16
RU2071860C1 (ru) 1997-01-20
ES2045615T3 (es) 1994-01-16
EP0392371B1 (fr) 1993-10-06
EP0392371A3 (fr) 1991-04-24
US5031439B1 (fr) 1993-06-29
DE3911921A1 (de) 1990-10-18
DE59002966D1 (de) 1993-11-11
RU2018405C1 (ru) 1994-08-30
CA2014368A1 (fr) 1990-10-12
CA2014368C (fr) 2000-02-08

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