EP0559991A1 - Turning device for cross-transfer presses - Google Patents

Turning device for cross-transfer presses Download PDF

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Publication number
EP0559991A1
EP0559991A1 EP92810098A EP92810098A EP0559991A1 EP 0559991 A1 EP0559991 A1 EP 0559991A1 EP 92810098 A EP92810098 A EP 92810098A EP 92810098 A EP92810098 A EP 92810098A EP 0559991 A1 EP0559991 A1 EP 0559991A1
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EP
European Patent Office
Prior art keywords
section
turning device
turning
rocker arm
holder
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
EP92810098A
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German (de)
French (fr)
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EP0559991B1 (en
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
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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 DE59202091T priority Critical patent/DE59202091D1/en
Priority to EP92810098A priority patent/EP0559991B1/en
Priority to AT92810098T priority patent/ATE121977T1/en
Priority to TW082100642A priority patent/TW210981B/zh
Priority to US08/013,299 priority patent/US5343730A/en
Priority to JP5024417A priority patent/JP2686404B2/en
Publication of EP0559991A1 publication Critical patent/EP0559991A1/en
Application granted granted Critical
Publication of EP0559991B1 publication Critical patent/EP0559991B1/en
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    • 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 patent 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 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 the 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 fixed 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 section A, which is separated from 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 at 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 the section A from one work station to another.
  • the turning station I includes, among other things, a downwardly open U-profile 13, which according to its function is henceforth referred to as a guide link 13, is fastened to the tong carrier box 6 and therefore participates in its reciprocating movement.
  • the backdrop 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 rotationally 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 needed 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 spherical cap-shaped.
  • 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 90 ° has been turned (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 "push 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 by 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 an only partially shown upward pivoting device (32, 34); 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 swung-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 to the mentioned hook.
  • the latching opening 36 of the anvil cover is released for the lifting device by the cover flag 37 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 results in significant savings and a reduction in interference.
  • essential advantages of the arrangement described lie in the simple expandability or accessibility of the tong holder and the die holder (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 is to 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.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Automatic Assembly (AREA)
  • Attitude Control For Articles On Conveyors (AREA)

Abstract

The turning device has a guideway (13) formed on the tong carrier (3), in which guideway the roller (16) of an oscillating lever (15) is guided. The reciprocating motion of the guideway (13) is transmitted via the oscillating lever (15) to a pivot (14). The latter turns portion (A) in interaction with a counterholder (22). For use on horizontal cross-transfer presses with a high production frequency for the forming of metal starting from lengths of rod. <IMAGE>

Description

Die Erfindung betrifft eine Wendeeinrichtung für eine automatische Querförderpresse zur Verarbeitung zylindrischer, ab einem Draht abgescherter Abschnitte zu Pressteilen, gemäss dem Oberbegriff des unabhängigen Patentanspruchs 1.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 patent claim 1.

Bei herkömmlichen mehrstufigen Umformmaschinen, die Teile direkt ab Drahtring oder Stangen umformen, wird das Ausgangsmaterial in Pressachsenrichtung neben dem Pressschlitten gegen einen Anschlag gezogen und mit einem Schermesser abgeschert. Dabei dient der Scherschlitten zugleich als Zuführung des abgescherten Rohlings vor die 1. Umformstation oder in eine Ladestation, wobei die Längsachse parallel zur Pressachse bleibt.In conventional multi-stage forming machines that form parts directly from the wire ring or bars, 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.

Gilt es nun, ein Pressteil zu formen, dessen Querausdehnung, insbesondere in eine Richtung, erheblich grösser ist als die Längsabmessungen, kann es wegen des grossen Verformungsgrades und damit grosser Presskräfte sehr schwer oder sogar unmöglich sein, derartige Teile auf solchen Mehrstufenpressen herzustellen.If it is now a question of forming a pressed part whose transverse extent, in particular in one direction, is considerably larger than the longitudinal dimensions, it can be very difficult or even impossible to produce such parts on such multi-stage presses because of the large degree of deformation and thus large pressing forces.

Dieses Problem kann gelöst werden, indem eine Vorrichtung entwickelt wird, die es ermöglicht, den abgescherten Rohling um 90° zu drehen, und dieser dadurch seine längste Ausdehnung quer zur Pressachse hat; der Rohling liegt also quer vor der Matrize einer ersten Umformstation. Diese Vorrichtung sollte ohne allzu grossen Aufwand und je nach Bedarfsfall an die ursprünglichen Umformpressen angebaut werden können.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.

Das Wenden des Abschnittes kann in einer ersten Arbeitsstufe geschehen oder während des Transportes von einer Stufe zur anderen. Im ersten Fall würde das erste Zangenpaar einen bereits gewendeten Abschnitt übernehmen und vor die 1. Umformstufe (2. Arbeitsstufe) transportieren.The section can be turned over in a first stage or during transport from one stage to another. In the first case, 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).

Eine Ausführung der 1. Art (Wenden in 1. Stufe) ist in der DE-OS 2 114 674 beschrieben.An embodiment of the 1st type (turning in the 1st stage) is described in DE-OS 2 114 674.

Gemäss dieser DE-OS 2 114 674 erfolgt das Wenden des Abschnitts innerhalb der 1. Arbeitsstufe, wird aber nicht zwangsgesteuert eingeleitet. Auch haben dabei die Geometrie und der Oberflächenzustand des Abschnittes einen sehr grossen Einfluss auf das störungsfreie Funktionieren unter Produktionsbedingungen. In der Praxis hat sich diese Lösung daher nicht bewährt.According to this DE-OS 2 114 674, the section is turned within the first working stage, but is not initiated under positive control. The geometry and the 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.

Die europäische Patentschrift 41 690 zeigt eine Wendevorrichtung, die sich aufgrund folgender Nachteile nicht durchsetzen konnte:

  • Komplizierte Demontage des Amboss beim Werkzeugwechsel, da am Amboss bzw. am Ambossdeckel feste Schwenkpunkte unten und oben angeschraubt sind.
  • Die Drehachse der unteren Wendezange ist Prinzipbedingt vor der Ambossvorderkante angeordnet. Daher ist sie durch das Kühlwasser extremer Verschmutzung ausgesetzt, was den Verschleiss sehr begünstigt.
  • Es besteht die Gefahr einer Kollision der unteren Zange, insbesondere mit zu entsorgenden Teilen, was sich für eine drehbar angesteuerte Ausführung zerstörend auswirken muss.
European patent specification 41 690 shows a turning device which could not be implemented due to the following disadvantages:
  • Complicated disassembly of the anvil when changing tools, as fixed pivot points are screwed to the anvil or anvil cover at the top and bottom.
  • The axis of rotation of the lower turning pliers is arranged in front of the front edge of the anvil. Therefore, it is exposed to extreme pollution from the cooling water, which favors wear and tear.
  • There is a risk of a collision of the lower pliers, especially with parts to be disposed of, which must have a destructive effect for a rotatably controlled version.

Es ist daher die Aufgabe der vorliegenden Erfindung, eine Querförderpresse vorzuschlagen, deren Wendestation im Gegensatz zu den bekannten Lösungsvorschlägen

  • kein unteres drehbares Zangenelement erfordert und somit weniger störungsanfällig ist,
  • das Wenden hinter der Ambossvorderkante ausführt, so dass dieser Vorgang nicht durch einen fallengelassenen Abschnitt gestört werden kann,
  • einen problemlosen Werkzeugwechsel gestattet, indem beim Ausbau des Ambossdeckels gleichzeitig die ganze Wendeeinrichtung ausgebaut werden kann,
  • einen problemlosen Ausbau des Ambossdeckels erlaubt, da kein störendes Wendeantriebsgestänge, d.h. räumliches Zweischlaggetriebe, den Zugang bei hochgeschwenkter oberer Zange versperrt und
  • eine Störung durch fallengelassene Abschnitte praktisch ausschaltet.
It is therefore the object of the present invention to propose a cross conveyor press, the turning station of which, in contrast to the known proposed solutions
  • no lower rotating pliers element required and is therefore less prone to malfunction,
  • makes turns behind the anvil leading edge so that this process cannot be disturbed by a dropped section,
  • allows a problem-free tool change by simultaneously removing the entire turning device when removing the anvil cover,
  • problem-free removal of the anvil cover allows, since there is no annoying turning drive linkage, ie spatial two-stroke transmission, which blocks access when the upper pliers are swiveled up and
  • practically eliminates a malfunction caused by dropped sections.

Diese Aufgabe wird durch die vorliegende Erfindung, die im kennzeichnenden Teil des unabhängigen Patentanspruchs 1 definiert ist, gelöst. Bevorzugte Ausführungsformen sind in den abhängigen Patentansprüchen definiert.This object is achieved by the present invention, which is defined in the characterizing part of independent patent claim 1. Preferred embodiments are defined in the dependent claims.

Nachstehend wird anhand der beiliegenden Zeichnung ein Ausführungsbeispiel des Erfindungsgegenstandes erläutert. Es zeigen.

  • Fig. 1 eine vereinfachte Perspektivansicht dreier Umformstationen mit Wendestation und Transporteinrichtung,
  • Fig. 1a/1b zwei Ausführungsdetails,
  • Fig. 2 eine Schnittdarstellung des Wendeantriebs und
  • Fig. 3 bis 8 eine schematische Darstellung der verschiedenen Wendephasen.
An exemplary embodiment of the subject matter of the invention is explained below with reference to the accompanying drawing. Show it.
  • 1 is a simplified perspective view of three forming stations with a turning station and transport device,
  • 1a / 1b two execution details,
  • Fig. 2 is a sectional view of the turning drive and
  • 3 to 8 a schematic representation of the different turning phases.

Die Fig. 1 zeigt einen ortsfest in der Maschine angeordneten Amboss 1, in welchem vier Arbeitsstationen I bis IV angeordnet sind. Die Arbeitsstationen II bis IV sind reine Umformstationen, in welchen ein Stangenabschnitt von einem Stempel in eine Matrize gestossen und dabei spanlos umgeformt wird. Die Stempel sind wie üblich koaxial zu den Matrizen auf einem hin- und hergehend angetriebenen Pressschlitten angeordnet. Die Ausbildung der herzustellenden Umformteile ist dem Fachmann bekannt und daher nicht dargestellt. Ein typisches Ausgangsprodukt, dessen Querausdehnung die Längsabmessungen um ein Mehrfaches übersteigt, ist beispielsweise in Figur 10 der DE OS 2 114 674 dargestellt.FIG. 1 shows an anvil 1 which is fixed 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. As usual, the punches are arranged coaxially to the dies on a reciprocatingly driven press slide. The design of the formed parts to be produced is known to the person skilled in the art and is therefore not shown. 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.

Die Arbeitsstufe I ist eine Wendestation, an welcher der durch ein Schermesser 2 vom Draht D abgetrennte Abschnitt A vor dessen Umformung in einer Horizontalebene um 90° gewendet wird.Working stage I is a turning station at which section A, which is separated from wire D by a shear knife 2, is turned through 90 ° in a horizontal plane before it is formed.

Ein in Pfeilrichtung P hin- und herbewegbarer Zangenträger 3 ist über zwei Hohlwellen 4, wovon nur die obere sichtbar ist und die am Zangenträger 3 mittels Schrauben 5 eingespannt sind, mit einem nichtgezeigten Antrieb verbunden. Der Zangenträger 3 trägt einen Zangenträgerkasten 6, an dessen Unter- und Oberseite frontseitig die mit 7 bis 12 bezeichneten Zangenkonsolen fest angeordnet sind. An letzteren sind die Transportzangen Z befestigt, die sich daher mit dem Zangenträger periodisch hin- und herbewegen und dabei den Abschnitt A von einer Arbeitsstation zur anderen bringen.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 at 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 the section A from one work station to another.

Zur Wendestation I gehört u.a. ein nach unten offenes U-Profil 13, das seiner Funktion entsprechend hinfort als Führungskulisse 13 bezeichnet wird, am Zangenträgerkasten 6 befestigt ist und daher an dessen hin- und hergehender Bewegung teilnimmt. Die Kulisse 13 kann am Zangenträgerkasten 6 angeformt sein und mit diesem ein einziges Teil bilden. In dem der ersten Arbeitsstation I entsprechenden Abschnitt des Amboss 1 ist ein Schwenkzapfen 14 drehbar gelagert und an seinem oberen, aus dem Amboss 1 herausragenden Teil 14a drehstarr mit einem Schwinghebel 15 verbunden, dessen freies Ende eine in die Führungskulisse 13 hineinragende Uebertragungsrolle 16 trägt. Die leichte Ausbaubarkeit der Schwenkachse 14 wird durch eine Abdeckplatte 17 gewährleistet, die mittels Schrauben 18 am Amboss 1 befestigt ist.The turning station I includes, among other things, a downwardly open U-profile 13, which according to its function is henceforth referred to as a guide link 13, is fastened to the tong carrier box 6 and therefore participates in its reciprocating movement. The backdrop 13 can be integrally formed on the pliers carrier box 6 and form a single part with this. In the section of the anvil 1 corresponding to the first work station I, a pivot pin 14 is rotatably mounted and, at its upper part 14a projecting from the anvil 1, is connected in a rotationally 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.

Die hin- und hergehende Bewegung des Zangenträgers 3 überträgt sich somit von der Fürhungskulisse 13 über die Uebertragungsrolle 16 und den Schwinghebel 15 auf den Schwenkzapfen 14.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.

Am unteren Ende des Schwenkzapfens 14 befindet sich ein Mitnehmer 19, der gemäss Fig. 2 durch eine Druckfeder 20 nach unten gedrückt wird, wobei der Hubweg des Mitnehmers 19 durch einen Anschlag 21 begrenzt ist. Der zylindrische Abschnitt A lässt sich so zwischen den federbelasteten Mitnehmer 19 und einen ortsfesten Gegenhalter 22 einschieben, der mittels Schrauben 23 am Amboss 1 befestigt ist. Der Gegenhalter 22 könnte je nach Bedarf auch drehbar gelagert sein, um die Wendung des Abschnitts A zu erleichtern.At the lower end of the pivot pin 14 there is 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 needed to facilitate the turning of the section A.

Gemäss Fig. 3, die den Schwinghebel 15 schematisch in seiner Ausgangslage zeigt, wurde der zylindrische Stangenabschnitt A gerade vom Scherschlitten 24 vor einen Haltestift 25 geschoben, der die Aufgabe hat, den Abschnitt A zwischen Mitnehmer 19 und Gegenhalter 22 einzuschieben. Wie ferner Fig. 4 zeigt, wird der Abschnitt A, nachdem er in seine Wendeposition eingeschoben wurde, an seinen Stirnseiten durch den Haltestift 25 und einen ortsfesten, verstellbaren Anschlagstift 26 gehalten. Um die Drehung des Abschnitts A, welche beispielsweise 90° beträgt, aber in der Praxis um ± 45° variieren kann, nicht zu behindern, sind die Stirnflächen von Haltestift 25 und Anschlagstift 26 mit einer Einbuchtung E versehen, welche vorzugsweise kugelkalottenförmig ist. Der in einer Büchse 27 geführte und durch eine Feder 28 vorgespannte Haltestift 25 ist mit einem seitlich auskragenden Arm 29 versehen, die Feder 28, die als Schraubenfeder ausgebildet ist, an deren Stelle aber auch ein Pneumatikzylinder verwendet werden kann, schiebt den Abschnitt in die Wendestufe, während der Arm 29 den Vorwärtshub des Haltestiftes 25 beim Auftreffen auf die Amboss-Vorderkante AV begrenzt.3, which shows the rocker arm 15 schematically in its initial position, 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. As further shown in FIG. 4, 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. In order not to impede the rotation of section A, which is, for example, 90 °, but can vary in practice by ± 45 °, the end faces of retaining pin 25 and stop pin 26 are provided with an indentation E, which is preferably spherical cap-shaped. 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.

Die Fig. 3 bis 8 veranschaulichen die Bewegung des Schwinghebels 15 und das Wenden des Abschnitts A. Nach erfolgter 90°-Wendung (Fig. 7 und 8) wird der Abschnitt durch einen Auswerfer 30 in die bereitstehenden Transportzangen 31 geschoben und von diesen der ersten Umformstation II zugeführt.3 to 8 illustrate the movement of the rocker arm 15 and the turning of the section A. After 90 ° has been turned (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.

Die beschriebene Wendevorrichtung lässt sich ohne Schwierigkeit an bestehende Maschinen anbringen und auch leicht ausbauen, nachdem der schwenkbar gelagerte Zangenträger 6 mittels der in Fig. 1 bei 32 angedeuteten Schwenkvorrichtung hochgeschwenkt wurde. Die an sich bekannte Schwenkvorrichtung 32, deren Kupplungszapfen sich in eine Bohrung 33 des Zangenträgerkastens 6 einschieben lässt, ist drehbar gelagert und kann durch einen Antrieb 34 verschwenkt werden.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.

Die auf den Quertransporthub abgestimmte Rollenhebellänge und die symetrische Plazierung der Kulissenhubendlagen bezüglich Achse der Wendestufe ergibt genau den erforderlichen Schwenkwinkel.The 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.

Der Zangenträger 3 und der Scherschlitten 24 (Fig. 3), welcher den abgescherten Abschnitt vor die Wendestufe I bringt, bewegen sich ungefähr synchron im Takt, so dass der Abschnitt vor der Wendestufe I ist und durch den vorgefederten Haltestift 25 in dieselbe eingeschoben wird, während der Quertransport in Endhublage "Bringen" verharrt. Noch vor Ende "Einschieben" kann sich der Scherschlitten 24 wieder zur Scherstufe zurückbewegen.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 "push in" the shear carriage 24 can move back to the shear stage.

Wenn der Abschnitt ganz eingeschoben ist, wird der vorgefederte Haltestift 25 durch seinen Anschlagfinger 29 gegen die Ambossvorderkante AV in Ruhe gehalten, der Zangenträger 3 bewegt sich im Leerrücklauf in die Endlage zum Holen zurück und die am Zangenträger 3 befestigte Kulisse 13 schwenkt dabei den Schwinghebel 15 jetzt genau um die 90°, so dass der in der Wendestufe gefedert festgehaltene Abschnitt A über den Formschluss des Mitnehmers 19 horizontal gewendet wird. Nach dem Wenden sind die Greiferzangen Z vor der Wendestation I, so dass die beiden kurvengesteuerten Auswerfer 30 (Fig. 7) von hinten den Abschnitt A, dessen längste Ausdehnung jetzt quer zur Pressachse liegt, aus dem Mitnehmer 19 in die Greiferzange Z schieben, wobei der Mitnehmer 19 gegen die Federkraft nach oben aufgestossen werden muss.When the section is fully inserted, the spring-loaded retaining pin 25 is held at rest by its stop finger 29 against the front edge of the anvil AV, the tong holder 3 moves back to the end position for retrieval in the idle return and the link attached to the tong holder 3 13 pivots the rocker arm 15 exactly by 90 °, so that section A, which is spring-loaded in the turning stage, is turned horizontally via the positive engagement of the driver 19. After turning, the gripper tongs Z are in front of the turning station I, so that the two cam-controlled ejectors 30 (FIG. 7) push section A from the rear, the longest extension of which is now transverse to the press axis, from the driver 19 into the gripper tongs Z, whereby the driver 19 must be pushed open against the spring force.

Die Greiferzangen Z bringen den gewendeten Abschnitt A durch den Quertransport vor die 1. Umformstufe, gleichzeitig wird durch die mitlaufende Führungskulisse 13 die Wendevorrichtung wieder in die Grundstellung, d.h. Abschnitt-Einschiebestellung, zurückgedreht.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.

Rechtzeitig werden die Auswerferstifte 30 von der nicht dargestellten Steuerkurve freigegeben und bei Bedarf zurückgezogen bzw. freigegeben, damit sie zurückgestossen werden können.The ejector pins 30 are released in good time by the control cam (not shown) and withdrawn or released if necessary so that they can be pushed back.

Der Mitnehmer 19 in der Wendestufe I und der festangeordnete gegenüberliegende Gegenhalter 22 sind Verschleissteile und abhängig vom Abschnittdurchmesser dimensioniert und können nur bei ausgebauter Wendestufe ausgetauscht werden. Dies läuft folgendermassen ab:
   Der obere Antrieb des Quertransport-Zangenträgers 3 wird ausgekuppelt, so dass der Zangenträger 3 über die Endlage "Holen" (Fig. 1) hinaus bewegt und an eine nur teilweise gezeigte Hochschwenkeinrichtung (32, 34) angekuppelt werden kann; dabei wurde durch die Kulissse 13 der Schwinghebel 15 über die 90°-Wenden-Stellung hinausgedreht, so dass eine Schnappvorrichtung 35 den Schwinghebel 15 in dieser Aus- und Einbaustellung E behält. Der Zangenträger 3 kann jetzt in seine hochgeschwenkte Position gebracht werden, dabei hebt sich gleichzeitig die nach unten offene Kulisse 13, und der Ambossdeckel der Wendestufe I mit dem nach oben ragenden Schwinghebel ist für den Ausbau frei zugänglich.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 an only partially shown upward pivoting device (32, 34); 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 swung-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.

Das Herausheben des Ambossdeckels erfolgt durch eine Hebevorrichtung, deren Haken in eine Öffnung 36 des Ambossdeckels eingreift. Eine am Schwinghebel 15 befestigte Abdeckfahne 37 liegt während des Betriebs der Wendestufe I direkt über der Öffnung 36, so dass diese für den genannten Haken nicht zugänglich ist. In der Aus- und Einbaustellung des Schwinghebels 15 wird durch die weggeschwenkte Abdeckfahne 37 die Einklinköffnung 36 des Ambossdeckels für die Hebevorrichtung freigegeben, so dass beim Wiedereinbau der kompletten Wendestation der Schwinghebel 15 in der einzig erlaubten Stellung für das Absenken der Führungskulisse 13 auf die Rolle 16 ist.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 to the mentioned hook. In the removal and installation position of the rocker arm 15, the latching opening 36 of the anvil cover is released for the lifting device by the cover flag 37 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.

Bei Umformprozessen, welche keine Wendestation benötigen, kann die 1. Stufe wieder in eine normale Umformstufe umgebaut werden, in diesem Fall hat dann die Führungskulisse keine Funktion.In the case of forming processes that do not require a turning station, the 1st stage can be converted back into a normal forming stage, in which case the guide link has no function.

Wie bereits erwähnt wurde, ist es dank der vorliegenden Erfindung möglich, auf die Anbringung eines unteren drehbaren Zangenelementes zu verzichten. Das Zangenelement kann daher beispielsweise so ausgebildet werden, wie dies Fig. 1b zeigt, was eine bedeutende Einsparung und eine Verminderung von Störungen mit sich bringt. Weitere, wesentliche Vorteile der beschriebenen Anordnung liegen in der einfachen Ausbaubarkeit bzw. Zugänglichkeit des Zangenträgers und des Matritzenträgers (Amboss) sowie der Verlegung des Wendevorganges hinter die Umformebene.As already mentioned, it is possible thanks to the present invention to dispense with the attachment of a lower rotatable pliers element. The pliers element can therefore be designed, for example, as shown in FIG. 1b, which results in significant savings and a reduction in interference. Further, essential advantages of the arrangement described lie in the simple expandability or accessibility of the tong holder and the die holder (anvil) and the laying of the turning process behind the forming plane.

In Abweichung von dem beschriebenen Ausführungsbeispiel kann die als U-Profil ausgebildete Führungskulisse 13 auch am Schwinghebel 15 angeordnet bzw. der Schwinghebel 15 selbst als Führungskulisse mit U-förmigem Querschnitt ausgebildet sein, wobei hier der U-förmige Querschnitt nach oben offen und die am Zangenträgerkasten 6 drehbar gelagerte Uebertragungsrolle von oben in die Führungskulisse hineinragen sollte, damit auch bei dieser Ausführung der Zangenträgerkasten 6 zwecks Ausführung von Austausch- und Reparaturarbeiten problemlos hochgeschwenkt werden kann.In deviation from the described embodiment, 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.

In den meisten Fällen dürfte es zweckmässig sein, die beschriebene Wendevorrichtung als erste Arbeitsstation , vor der ersten Umformstufe II, anzubringen. Es wäre aber auch möglich, eine Wendestation zwischen zwei beliebigen Umformstationen einzubauen, wobei die Führungskulisse 13 dann an der Unterseite des Zangenträgerkastens 6 angebracht werden könnte.In most cases, it should be expedient to install the turning device described as the first work station, before the first forming stage II. However, it would also be possible to install a turning station between any two forming stations, in which case the guide link 13 could then be attached to the underside of the pliers carrier box 6.

Der im vorliegenden Zusammenhang verwendete Ausdruck "Führungskulisse" ist so zu verstehen, dass er nicht nur eine geschlossene Kulisse (U-Profil), sondern auch offene Kulissen umfasst, die z.B. als flaches "Lineal" ausgebildet sein können, wobei die Uebertragungsrolle durch Federkraft am Lineal anliegt.The term "management backdrop" used in the present context is to 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)

Wendeeinrichtung für automatische Querförderpressen zur Verarbeitung metallischer, insbesondere ab einem Stahldraht abgescherter Abschnitte (A) zu Pressteilen, deren quer zur Pressrichtung liegende Ausdehnung grösser ist, als ihre in der Pressrichtung liegende Ausdehnung, wobei die Querförderpresse einen Matrizenträger (Amboss 1) mit mehreren horizontal nebeneinander angeordneten ortsfesten Matrizen (M) sowie einen hin und hergehend angetriebenen Pressschlitten mit koaxial vor den Matrizen (M) angeordneten Stempeln aufweist, sowie eine einen hin- und hergehenden Zangenträger (3) aufweisende Transporteinrichtung, welche den umzuformenden Abschnitt (A) mit mindestens einem Greiferpaar (Z) erfasst und von einer Umformstation (II-IV) zur anderen vor die jeweilige Matrize (M) bringt, wobei die Wendeeinrichtung vorgesehen ist, um den Abschnitt um 90° ± 45° in einer Horizontalebene zu wenden, dadurch gekennzeichnet, dass dieselbe einen ausserhalb der Quertransportebene angeordneten, im Matrizenträger (1) um seine Längsachse drehbar gelagerten vertikalen Schwenkzapfen (14) aufweist, dessen oberes Ende drehstarr mit einem Schwinghebel (15) verbunden ist, wobei entweder am Zangenträger (3) oder am Schwinghebel (15) eine Führungskulisse (13) angeordnet ist, in welcher ein am Schwinghebel (15) bzw. am Zangenträger (3) angeordnetes Uebertragungsorgan (16) so gelagert ist, dass die hin- und hergehende Bewegung des Zangenträgers (3) über die Führungskulisse (13) und das Uebertragungsorgan (16) in Form einer oszillierenden 90° + 45°-Verschwenkung auf den Schwenkzapfen (14) und von diesem auf den zu wendenden Abschnitt (A) übertragen wird.Turning device for automatic cross conveyor presses for processing metallic sections (A), in particular sheared off from a steel wire, into pressed parts, the extent of which lies transversely to the pressing direction than their extent lying in the pressing direction, the transverse conveying press being a die carrier (anvil 1) with several horizontally next to one another arranged stationary dies (M) and a reciprocally driven press slide with punches arranged coaxially in front of the dies (M), and a transport device having a reciprocating tong holder (3), which section (A) to be formed with at least one pair of grippers (Z) detected and from one forming station (II-IV) to the other in front of the respective die (M), the turning device being provided to turn the section through 90 ° ± 45 ° in a horizontal plane, characterized in that the same an arranged outside the cross transport plane, in the die holder (1) rotatably mounted about its longitudinal axis vertical pivot pin (14), the upper end of which is connected in a rotationally rigid manner to a rocker arm (15), a guide link (13) being arranged either on the tong holder (3) or on the rocker arm (15) , in which a transmission member (16) arranged on the rocker arm (15) or on the tong holder (3) is mounted in such a way that the reciprocating movement of the tong holder (3) via the guide link (13) and the transmission member (16) in Form of an oscillating 90 ° + 45 ° pivoting on the pivot pin (14) and is transferred from this to the section to be turned (A). Wendeeinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Führungskulisse (13) ein am Zangenträger (3) der Transporteinrichtung vorzugsweise lösbar angeordnetes, im Hinblick auf anfallenden Zunder und die Ausbaubarkeit des Zangenträgers nach unten offenes U-Profil ist, zwischen dessen beiden parallelen Führungswänden (F) die lose Rolle (16) des Schwinghebels (15) geführt ist.Turning device according to claim 1, characterized in that the guide link (13) is a U-profile which is preferably detachably arranged on the tong holder (3) of the transport device and is open towards the bottom with regard to scale and the expandability of the tong holder, between the two parallel guide walls (F) the loose roller (16) of the rocker arm (15) is guided. Wendeeinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Schwinghebel (15) eine Führungskulisse von U-förmigem Querschnitt trägt bzw. selbst als U-förmige Führungskulisse ausgebildet ist und dass in dieselbe eine am Zangenträger (3) angeordnete lose Rolle (16) hineinragt.Turning device according to claim 1, characterized in that the rocker arm (15) carries a guide link of U-shaped cross section or is itself designed as a U-shaped guide link and that a loose roller (16) arranged on the tong holder (3) projects into the latter. Wendeeinrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der genannte Schwenkzapfen (14) an seinem unteren Ende einen Mitnehmer (19) aufweist, der von einer innerhalb des Schwenkzapfens (14) angeordneten Feder (20) nach unten gegen den zu haltenden Abschnitt (A) gedrückt wird, der seinerseits auf einem ortsfesten Gegenhalter (22) ruht (Fig. 2).Turning device according to one of claims 1 to 3, characterized in that the said pivot pin (14) has at its lower end a driver (19) which is held down by a spring (20) arranged inside the pivot pin (14) against the one to be held Section (A) is pressed, which in turn rests on a stationary counter-holder (22) (Fig. 2). Wendeeinrichtung nach einem der Ansprüche 1 bis 4, wobei die Wendestation (I) als erste Arbeitsstufe vor der ersten Umformstation (II) angeordnet ist, dadurch gekennzeichnet, dass der zylindrische Abschnitt (A) nach dem Abscheren in der Wendestation stirnseitig zwischen einem gefederten Haltestift (25) und einem am Matrizenkörper ortsfest angeordneten Anschlagstift (26) gehalten ist, wobei die dem Abschnitt (A) zugewandten Stirnflächen des Halte- und Anschlagstifts jeweils eine dem Wenderadius der Abschnittkanten entsprechende Einbuchtung (E) aufweisen.Turning device according to one of claims 1 to 4, wherein the turning station (I) is arranged as a first work stage before the first forming station (II), characterized in that the cylindrical section (A) after shearing in the turning station between a spring-loaded holding pin ( 25) and a stop pin (26) arranged in a fixed position on the die body, the end faces of the holding and stop pin facing section (A) each having an indentation (E) corresponding to the turning radius of the section edges. Wendeeinrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die genannte Einbuchtung kugelkalottenförmig ist.Turning device according to claim 5, characterized in that said indentation is spherical cap-shaped. Wendeeinrichtung nach einem der Ansprüche 5 oder 6, dadurch gekennzeichnet, dass der gefederte Haltestift (25) einen seitlich dessen Vorderkante überragenden Anschlagfinger (29) aufweist, der den Hub des Haltestifts (25) in Richtung auf den zu wendenden Abschnitt (A) beim Auftreffen auf die Amboss-Vorderkante (AV) begrenzt.Turning device according to one of claims 5 or 6, characterized in that the spring-loaded holding pin (25) has a stop finger (29) projecting laterally from its front edge, which stops the stroke of the holding pin (25) in the direction of the section (A) to be turned Impact limited to the anvil leading edge (AV). Wendeeinrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass am Schwinghebel (15) eine Abdeckfahne (37) befestigt ist, welche in der Betriebsstellung der Wendeeinrichtung eine zu deren Ausbau für das Einklinken einer Hebevorrichtung vorgesehene Öffnung (36) abdeckt, in einer für den Ausbau vorgesehenen Endlage (E) aber freigibt.Turning device according to one of Claims 1 to 7, characterized in that a cover flag (37) is fastened to the rocker arm (15) and, in the operating position of the turning device, covers an opening (36) provided for its removal for latching a lifting device, in one but released for the intended end position (E).
EP92810098A 1992-02-11 1992-02-11 Turning device for cross-transfer presses Expired - Lifetime EP0559991B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE59202091T DE59202091D1 (en) 1992-02-11 1992-02-11 Turning device for automatic cross conveyor press.
EP92810098A EP0559991B1 (en) 1992-02-11 1992-02-11 Turning device for cross-transfer presses
AT92810098T ATE121977T1 (en) 1992-02-11 1992-02-11 TURNING DEVICE FOR AUTOMATIC CROSS CONVEYOR PRESS.
TW082100642A TW210981B (en) 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 (en) 1992-02-11 1993-02-12 Turning device for automatic cross transfer press working

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92810098A EP0559991B1 (en) 1992-02-11 1992-02-11 Turning device for cross-transfer presses

Publications (2)

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

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EP92810098A Expired - Lifetime EP0559991B1 (en) 1992-02-11 1992-02-11 Turning device for cross-transfer presses

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US (1) US5343730A (en)
EP (1) EP0559991B1 (en)
JP (1) JP2686404B2 (en)
AT (1) ATE121977T1 (en)
DE (1) DE59202091D1 (en)
TW (1) TW210981B (en)

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Publication number Priority date Publication date Assignee Title
US6196044B1 (en) * 1999-11-19 2001-03-06 Hms Products Co. Press transfer bar-finger support

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003080875A2 (en) * 2002-03-26 2003-10-02 Nedschroef Herentals N.V. Device for transferring wire pieces

Citations (2)

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Publication number Priority date Publication date Assignee Title
DE3125394A1 (en) * 1980-06-30 1982-04-29 The National Machinery Co., 44883 Tiffin, Ohio FORGING MACHINE CONVEYOR
EP0041690B1 (en) * 1980-06-10 1984-03-28 Hatebur Umformmaschinen AG Multistage metal-forming machine

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US3466917A (en) * 1966-10-19 1969-09-16 Nat Machinery Co The Method and apparatus for forging blanks
NL7005104A (en) * 1970-04-09 1971-10-12
US3965718A (en) * 1973-07-23 1976-06-29 The National Machinery Company Transfer mechanism
DE2715966C3 (en) * 1977-04-09 1980-03-27 Hatebur Umformmaschinen Ag, Basel (Schweiz) Device for the automatic transport of workpieces on multi-stage cross transport presses

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Publication number Priority date Publication date Assignee Title
EP0041690B1 (en) * 1980-06-10 1984-03-28 Hatebur Umformmaschinen AG Multistage metal-forming machine
DE3125394A1 (en) * 1980-06-30 1982-04-29 The National Machinery Co., 44883 Tiffin, Ohio FORGING MACHINE CONVEYOR

Cited By (1)

* 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

Also Published As

Publication number Publication date
EP0559991B1 (en) 1995-05-03
DE59202091D1 (en) 1995-06-08
TW210981B (en) 1993-08-11
US5343730A (en) 1994-09-06
JP2686404B2 (en) 1997-12-08
JPH05337579A (en) 1993-12-21
ATE121977T1 (en) 1995-05-15

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