EP0559991B1 - Dispositif de retournement pour presses à transfert transversal - Google Patents

Dispositif de retournement pour presses à transfert transversal Download PDF

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Publication number
EP0559991B1
EP0559991B1 EP92810098A EP92810098A EP0559991B1 EP 0559991 B1 EP0559991 B1 EP 0559991B1 EP 92810098 A EP92810098 A EP 92810098A EP 92810098 A EP92810098 A EP 92810098A EP 0559991 B1 EP0559991 B1 EP 0559991B1
Authority
EP
European Patent Office
Prior art keywords
section
turning device
turning
pin
rocking 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
EP92810098A
Other languages
German (de)
English (en)
Other versions
EP0559991A1 (fr
Inventor
Ulrich Steinhauser
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.)
Hatebur Umformmaschinen AG
Original Assignee
Hatebur Umformmaschinen 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
Application filed by Hatebur Umformmaschinen AG filed Critical Hatebur Umformmaschinen AG
Priority to EP92810098A priority Critical patent/EP0559991B1/fr
Priority to DE59202091T priority patent/DE59202091D1/de
Priority to AT92810098T priority patent/ATE121977T1/de
Priority to TW082100642A priority patent/TW210981B/zh
Priority to US08/013,299 priority patent/US5343730A/en
Priority to JP5024417A priority patent/JP2686404B2/ja
Publication of EP0559991A1 publication Critical patent/EP0559991A1/fr
Application granted granted Critical
Publication of EP0559991B1 publication Critical patent/EP0559991B1/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
    • 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
    • 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

Definitions

  • the invention relates to a turning device for an automatic cross conveyor press for processing cylindrical sections cut off from a wire into pressed parts, according to the preamble of independent claim 1.
  • the starting material is pulled in the direction of the press axis next to the press slide against a stop and sheared off with a shear knife.
  • the shear carriage also serves as a feed of the sheared blank in front of the 1st forming station or into a loading station, the longitudinal axis remaining parallel to the press axis.
  • This problem can be solved by developing a device which enables the sheared blank to be rotated through 90 ° and thereby has its longest dimension transverse to the press axis; the blank is therefore transverse to the die of a first forming station.
  • This device should be able to be attached to the original forming presses without too much effort and as required.
  • the section can be turned over in a first stage of operation or during transport from one stage to another.
  • the first pair of pliers would take over a section that has already been turned and transport it in front of the 1st forming stage (2nd working stage).
  • the section is turned within the first working stage, but is not initiated under positive control.
  • the geometry and surface condition of the section also have a very large influence on the trouble-free functioning under production conditions. This solution has therefore not proven itself in practice.
  • FIG. 1 shows an anvil 1 which is arranged in a stationary manner in the machine and in which four work stations I to IV are arranged.
  • the work stations II to IV are pure forming stations, in which a rod section is pushed from a punch into a die and is thereby formed without cutting.
  • the punches are arranged coaxially to the dies on a reciprocatingly driven press slide.
  • a typical starting product, the transverse extent of which exceeds the longitudinal dimensions by a multiple, is shown, for example, in FIG. 10 of DE OS 2 114 674.
  • Working stage I is a turning station at which the section A separated from the wire D by a shear knife 2 is turned through 90 ° in a horizontal plane before it is formed.
  • a tong holder 3 which can be moved back and forth in the direction of arrow P is connected to a drive (not shown) via two hollow shafts 4, only the upper one of which is visible and which are clamped on the tong holder 3 by means of screws 5.
  • the pliers carrier 3 carries a pliers carrier box 6, on the underside and top of which the pliers consoles designated 7 to 12 are fixedly arranged on the front.
  • the transport tongs Z are fastened to the latter, which therefore periodically move back and forth with the tongs carrier and thereby bring section A from one work station to another.
  • the turning station I includes, among other things, a U-profile 13 which is open at the bottom and which according to its function is henceforth referred to as a guide link 13, is fastened to the tong carrier box 6 and therefore takes part in its reciprocating movement.
  • the setting 13 can be integrally formed on the pliers carrier box 6 and form a single part with this.
  • a pivot pin 14 is rotatably mounted and, at its upper part 14a projecting from the anvil 1, is connected in a torsionally rigid manner to a rocker arm 15, the free end thereof carries a transfer roller 16 projecting into the guide link 13.
  • the easy removal of the pivot axis 14 is ensured by a cover plate 17 which is fastened to the anvil 1 by means of screws 18.
  • the reciprocating movement of the tong holder 3 is thus transmitted from the guide link 13 via the transfer roller 16 and the rocker arm 15 to the pivot pin 14.
  • a driver 19 which, according to FIG. 2, is pressed down by a compression spring 20, the travel of the driver 19 being limited by a stop 21.
  • the cylindrical section A can thus be inserted between the spring-loaded driver 19 and a stationary counter-holder 22 which is fastened to the anvil 1 by means of screws 23.
  • the counter-holder 22 could also be rotatably mounted as required to facilitate the turning of the section A.
  • the cylindrical rod section A has just been pushed by the shear carriage 24 in front of a retaining pin 25, which has the task of inserting the section A between the driver 19 and the counter-holder 22.
  • the section A after it has been pushed into its turning position, is held on its end faces by the holding pin 25 and a fixed, adjustable stop pin 26.
  • the end faces of retaining pin 25 and stop pin 26 are provided with an indentation E, which is preferably in the form of a spherical cap.
  • the guided in a sleeve 27 and biased by a spring 28 holding pin 25 is provided with a laterally projecting arm 29, the spring 28, which is designed as a helical spring, but instead of which a pneumatic cylinder can be used, pushes the section into the turning stage , while the arm 29 limits the forward stroke of the holding pin 25 when it hits the anvil leading edge AV.
  • FIG. 3 to 8 illustrate the movement of the rocker arm 15 and the turning of the section A. After the 90 ° turn (FIGS. 7 and 8), the section is pushed by an ejector 30 into the transport tongs 31 provided and the first of these Forming station II supplied.
  • the turning device described can be attached to existing machines without difficulty and can also be easily removed after the pivotably mounted tong holder 6 has been pivoted up by means of the pivoting device indicated at 32 in FIG. 1.
  • the known swivel device 32, the coupling pin of which can be inserted into a bore 33 of the tong holder box 6, is rotatably mounted and can be pivoted by a drive 34.
  • roller lever length matched to the transverse transport stroke and the symmetrical placement of the link stroke end positions with respect to the axis of the turning stage gives exactly the required swivel angle.
  • the tong holder 3 and the shear carriage 24 (FIG. 3), which brings the sheared section in front of the turning stage I, move approximately synchronously in time, so that the section is in front of the turning stage I and is inserted into the same by the spring-loaded retaining pin 25, while the cross transport remains in the final stroke position "bring". Before the end of "pushing in", the shear carriage 24 can move back to the shear stage.
  • the gripper tongs Z bring the turned section A through the transverse transport in front of the 1st forming stage, at the same time the turning device is returned to the basic position by the moving guide link 13, i.e. Section insertion position, turned back.
  • the ejector pins 30 are released in good time from the control cam (not shown) and withdrawn or released if necessary so that they can be pushed back.
  • the driver 19 in the turning stage I and the fixed opposite counter-holder 22 are wear parts and are dimensioned depending on the section diameter and can only be replaced when the turning stage is removed. This works as follows: The upper drive of the cross transport tong holder 3 is disengaged, so that the tong holder 3 can be moved beyond the "fetch" end position (FIG. 1) and coupled to a swivel device (32, 34) only partially shown; the rocker arm 15 was rotated beyond the 90 ° turning position by the link 13, so that a snap device 35 keeps the rocker arm 15 in this removal and installation position E. The tong holder 3 can now be brought into its swiveled-up position, at the same time the backdrop 13, which is open at the bottom, and the Anvil cover of turning stage I with the rocker arm projecting upwards is freely accessible for removal.
  • the anvil cover is lifted out by a lifting device, the hook of which engages in an opening 36 of the anvil cover.
  • a cover flag 37 fastened to the rocker arm 15 lies directly above the opening 36 during the operation of the turning stage I, so that it is not accessible for the mentioned hook.
  • the latching opening 36 of the anvil cover is released for the lifting device by the cover flag 37 which is pivoted away, so that when the complete turning station is reinstalled, the rocker arm 15 is in the only permitted position for lowering the guide link 13 onto the roller 16 is.
  • the 1st stage can be converted back into a normal forming stage, in which case the guide link has no function.
  • the pliers element can therefore be designed, for example, as shown in FIG. 1b, which brings significant savings and a reduction in interference. Further, essential advantages of the arrangement described are the simple expandability or accessibility of the pliers carrier and the die carrier (anvil) and the laying of the turning process behind the forming plane.
  • the swing lever 15 which is constructed as U-shaped guide slot 13 can also be arranged on the oscillating lever 15 and the swing lever 15 may be itself formed as a guiding slide of U-shaped cross-section, in which case the U-shaped cross section upwardly open and the transfer roller, which is rotatably mounted on the pliers carrier box 6, should protrude from above into the guide link, so that the pliers carrier box 6 can also be pivoted up easily for the purpose of carrying out exchange and repair work.
  • management backdrop used in the present context should be understood to include not only a closed backdrop (U-profile) but also open backdrops, e.g. Can be designed as a flat "ruler", the transfer roller rests on the ruler by spring force.

Claims (8)

  1. Dispositif de pivotement pour des presses à transfert transversal automatiques destinées à transformer des segments métalliques (A), obtenus en particulier par cisaillement d'un fil d'acier, en des pièces pressées dont la dimension perpendiculaire à la direction de pressage est supérieure à la dimension dans la direction de pressage, étant entendu que la presse à transfert transversal comporte un porte-matrices (enclume 1) portant plusieurs matrices (M) fixes, disposées horizontalement les unes à côté des autres, ainsi qu'un coulisseau de presse entraîné en va-et-vient et portant des poinçons disposés coaxialement devant les matrices (M), et un dispositif transporteur comportant un porte-pinces (3) à mouvement de va-et-vient qui saisit le segment (A) à soumettre au formage au moyen d'au moins une paire de pinces (Z) et l'amène d'un poste de formage (II-IV) à l'autre devant la matrice (M) correspondante, le dispositif de pivotement étant prévu pour faire pivoter le segment de 90° ± 45° dans un plan horizontal, caractérisé en ce que ce dispositif comprend un tourillon (14) vertical, monté à rotation autour de son axe longitudinal dans le porte-matrices (1) et disposé en dehors du plan de transport transversal, dont l'extrémité supérieure est reliée rigidement en rotation à un levier oscillant (15), étant entendu que sur le porte-pinces (3) ou sur le levier oscillant (15) est prévue une coulisse de guidage (13) dans laquelle un organe de transmission (16) monté sur le levier oscillant (15) ou sur le porte-pinces (3) est installé de telle façon que le mouvement de va-et-vient du porte-pinces (3) soit transmis par l'intermédiaire de la coulisse de guidage (13) et de l'organe de transmission (16) sous la forme d'un pivotement oscillant de 90° ± 45° au tourillon (14) et de celui-ci au segment (A) à faire pivoter.
  2. Dispositif de pivotement suivant la revendication 1, caractérisé en ce que la coulisse de guidage (13) est un profilé en U monté, de préférence, de manière amovible sur le porte-pinces (3) du dispositif transporteur, le profilé étant ouvert vers le bas de manière à ne pas retenir les battitures qui tombent et de permettre le démontage du porte-pinces, le galet fou (16) du levier oscillant (15) étant guidé entre les deux parois de guidage parallèles (F) du profilé.
  3. Dispositif de pivotement suivant la revendication 1, caractérisé en ce que le levier oscillant (15) porte une coulisse de guidage de section transversale en U ou a lui-même la forme d'une coulisse de guidage en U et qu'un galet fou (16) monté sur le porte-pinces (3) s'étend à l'intérieur de cette coulisse.
  4. Dispositif de pivotement suivant l'une quelconque des revendications 1 à 3, caractérisé en ce que ledit tourillon pivotant (14) présente, à son extrémité inférieure, un entraîneur (19) qui est pressé par un ressort (20) disposé à l'intérieur du tourillon pivotant (14) vers le bas contre le segment (A) à maintenir qui repose, pour sa part, sur un support de contrepartie (22) monté fixe ou tournant.
  5. Dispositif de pivotement suivant l'une quelconque des revendications 1 à 4, dans lequel le poste de pivotement (I) est installé, en tant que premier étage de travail, devant le premier poste de formage (II), caractérisé en ce que le segment cylindrique (A), après le cisaillement dans le poste de pivotement est maintenu par ses faces d'about entre une tige de maintien à ressort (25) et une tige de butée (26) montée fixe sur le corps de matrice, les faces d'about de la tige de maintien et de la tige de butée tournées vers le segment (A) présentant chacune un creux (E) correspondant au rayon de pivotement des bords du segment.
  6. Dispositif de pivotement suivant la revendication 5, caractérisé en ce que ledit creux a la forme d'une calotte sphérique.
  7. Dispositif de pivotement suivant la revendication 5 ou 6, caractérisé en ce que la tige de maintien à ressort (25) présente un doigt de butée (29) qui fait saillie latéralement au-delà de son bord avant et qui limite la course de la tige de maintien (25) en direction du segment (A) à faire pivoter lors de l'arrivée sur le bord avant (AV) de l'enclume.
  8. Dispositif de pivotement suivant l'une quelconque des revendications 1 à 7, caractérisé en ce qu'au levier oscillant (15) est fixée une aile de recouvrement (37) qui, dans la position de fonctionnement du dispositif de pivotement recouvre une ouverture (36) prévue, en vue de son démontage, pour l'enclenchement d'un dispositif de levage, mais démasque cette ouverture dans une position extrême (E) prévue pour le démontage.
EP92810098A 1992-02-11 1992-02-11 Dispositif de retournement pour presses à transfert transversal Expired - Lifetime EP0559991B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP92810098A EP0559991B1 (fr) 1992-02-11 1992-02-11 Dispositif de retournement pour presses à transfert transversal
DE59202091T DE59202091D1 (de) 1992-02-11 1992-02-11 Wendeeinrichtung für automatische Querförderpresse.
AT92810098T ATE121977T1 (de) 1992-02-11 1992-02-11 Wendeeinrichtung für automatische querförderpresse.
TW082100642A TW210981B (fr) 1992-02-11 1993-02-01
US08/013,299 US5343730A (en) 1992-02-11 1993-02-04 Turning device for an automatic cross-transfer press
JP5024417A JP2686404B2 (ja) 1992-02-11 1993-02-12 自動交差移送プレス加工のための転回装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92810098A EP0559991B1 (fr) 1992-02-11 1992-02-11 Dispositif de retournement pour presses à transfert transversal

Publications (2)

Publication Number Publication Date
EP0559991A1 EP0559991A1 (fr) 1993-09-15
EP0559991B1 true EP0559991B1 (fr) 1995-05-03

Family

ID=8211869

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92810098A Expired - Lifetime EP0559991B1 (fr) 1992-02-11 1992-02-11 Dispositif de retournement pour presses à transfert transversal

Country Status (6)

Country Link
US (1) US5343730A (fr)
EP (1) EP0559991B1 (fr)
JP (1) JP2686404B2 (fr)
AT (1) ATE121977T1 (fr)
DE (1) DE59202091D1 (fr)
TW (1) TW210981B (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6196044B1 (en) * 1999-11-19 2001-03-06 Hms Products Co. Press transfer bar-finger support
WO2003080875A2 (fr) * 2002-03-26 2003-10-02 Nedschroef Herentals N.V. Dispositif permettant de transferer des elements de fil

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3466917A (en) * 1966-10-19 1969-09-16 Nat Machinery Co The Method and apparatus for forging blanks
NL7005104A (fr) * 1970-04-09 1971-10-12
US3965718A (en) * 1973-07-23 1976-06-29 The National Machinery Company Transfer mechanism
DE2715966C3 (de) * 1977-04-09 1980-03-27 Hatebur Umformmaschinen Ag, Basel (Schweiz) Einrichtung zum automatischen Transport von Werkstücken an mehrstufigen Quertransportpressen
US4430882A (en) * 1980-06-10 1984-02-14 Hatebur Umformmaschinen Ag Multi-stage metal-working machine
US4351180A (en) * 1980-06-30 1982-09-28 The National Machinery Company Workpiece turning transfer

Also Published As

Publication number Publication date
JPH05337579A (ja) 1993-12-21
DE59202091D1 (de) 1995-06-08
EP0559991A1 (fr) 1993-09-15
ATE121977T1 (de) 1995-05-15
US5343730A (en) 1994-09-06
JP2686404B2 (ja) 1997-12-08
TW210981B (fr) 1993-08-11

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