EP1350582A2 - Matrizenseitige Auswerfvorrichtung für Werkstücke bei Ein- oder Mehrstufenpressen - Google Patents
Matrizenseitige Auswerfvorrichtung für Werkstücke bei Ein- oder Mehrstufenpressen Download PDFInfo
- Publication number
- EP1350582A2 EP1350582A2 EP03003766A EP03003766A EP1350582A2 EP 1350582 A2 EP1350582 A2 EP 1350582A2 EP 03003766 A EP03003766 A EP 03003766A EP 03003766 A EP03003766 A EP 03003766A EP 1350582 A2 EP1350582 A2 EP 1350582A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- ejector
- lever
- die
- press
- ejector pin
- 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.)
- Withdrawn
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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 die-side ejection device for workpieces at one or Multi-stage presses, in which a stationary die is placed on a press is provided, which with a press ram for forming a hole in the Press die inserted interacts with one in a hole in the press frame slidably mounted ejector pin, the die-side end in the hole the press die protrudes and the other end is pretensioned against an ejector lever is pressed, which in turn is driven by a cam gear Operating lever between a starting position, in which the ejector pin with its end of the die is inserted into the bore of the die, and an ejection end position is pivotable and in on its side facing away from the ejector pin supports its starting point against a pressure piece attached to the press frame.
- Such die-side ejectors are used for single or multi-stage presses Workpieces, e.g. B. screws, bolts, rivets or similar parts, after the forming process eject from the die again, the ejection process in the cycle of Press operation is integrated.
- Workpieces e.g. B. screws, bolts, rivets or similar parts
- EP 0 950 447 A2 describes a device for ejecting Workpieces known in forging presses, which also have a remarkably large size Effort on joints, levers etc. and thus works with a variety of masses. Should be here the fixed point of the ejector pin inserted into the die must be adjusted, then one two adjustments are made, namely an adjustment of the stroke and one Adjustment of the starting point of the ejector pin. Such a solution is not only very expensive, but also complicated and cumbersome when switching to another Workpiece.
- the ejector lever is supported in its starting position (when the die is inserted into the die Ejector pin) against the end of the operating lever, on which this is on the axis at the Adjustment spindle sits, so that during the forming process on the workpiece and over this and the ejector pin force exerted on the ejector lever by the latter via the Operating lever forwarded to the adjusting spindle and via this on the press frame is supported.
- the support force is via a thread in the support block or Press frame initiated, which is also not advantageous. Should an adjustment of the retracted fixed point of the ejector pin, one is required for this Twisting of the adjusting spindle, which is also time-consuming and somewhat cumbersome.
- a device of the type mentioned is known from DE 851 792 C. This is supported the ejector lever with its position when the ejector pin is retracted Lever end facing away from ejector pin in turn on one in the press frame screwed adjustment spindle. So that is during the forming process exerted forming force via the ejector pin and the ejector lever without Interposition of an operating lever on the adjusting spindle and thus that Press housing transferred, but again there is the case that the supporting force must be introduced into the support block via a thread.
- the object of the invention is a die-side Eject device of the type mentioned to improve so that with her a special effective introduction of the forces acting on the ejector lever during the forming process in the press frame and also a quick and easy adjustability in the die retracted starting position of the ejector pin is reached.
- the forces to be absorbed do not act on the solution according to the invention the gear for ejecting, the absorption of the pressing force directly over one Fixed stop forming pressure piece in the press frame or a corresponding one Pressure plate, which is provided on this can take place.
- the device according to the invention is significantly lower in mass than the known devices and the pressing force that can occur be introduced directly into the press frame, without, as is sometimes the case with the Technology to be supported on the drive for the ejector lever.
- the adjustment of the retracted initial position of the ejector pin can be easily by an appropriate Displacement of the supporting part between its two travel stops can be set, being in the retracted position of the end of the ejector pin in the die Always head over the complementary contact surfaces of the pressure piece and ejector lever supported flat (and thus over a relatively large area) on the frame.
- an appropriate Displacement of the supporting part between its two travel stops can be set, being in the retracted position of the end of the ejector pin in the die Always head over the complementary contact surfaces of the pressure piece and ejector lever supported flat (and thus over a relatively large area) on the frame.
- the invention presents itself in a very compact design with relatively few levers and thus low mass Adjustment of the support part can be in any suitable manner, e.g. B. also servomotor take place so that a servomotor adjustment or adjustment of the ejector stroke if necessary, can even be carried out while the forming machine is in operation. That remains the front ejection position of the ejector plunger is always the same.
- the complementary shaped surfaces on the ejector lever on the one hand and on Pressure piece can be designed in any suitable shape, which only ensures that even when the support part is moved, both shaped surfaces are complementary to one another Keep plant. This can be achieved particularly preferably by that in an ejection device according to the invention z. B. the molding surface on the ejector lever corresponds to a curved path in the form of a cylindrical section and that the complementary, counter-shaped surface also running in the form of a cylindrical section on a pressure piece is provided, which otherwise has a cylindrical shape. This will make it easier Way made a very effective design of the mold surfaces in any position of the support piece ensures the desired flat-complementary system.
- the pressure piece is particularly preferably pivotable about a central axis, and again preferred, attached to a pressure plate attached to the press frame.
- the configuration of the support part in an ejection device according to the invention can also be carried out in any suitable form, for example as a sliding support carriage or a movable slide valve.
- the method of the support member can also be implemented in any suitable manner, wherein this can be done both via a motor-driven spindle drive, but completely particularly preferred, via a servo motor drive.
- the ejector lever is particularly preferred as a two-armed lever formed, wherein the ejector pin bears against the end region of a lever arm and at the end of the other lever arm a rotatable roller is attached, which is against supports the operating lever under pressure, the latter, relative to Ejector lever seen, is provided on the same side of the ejector lever as the Ejector pin.
- Cam gear for the operating lever attached to an ejector shaft Cam includes one on the free end of the operating lever rotatably mounted roller runs, the actuating lever for pressing the roller on the Cam is biased against the latter. This also makes it a very simple, however nevertheless outstandingly functional design of the cam mechanism used few levers and thus low masses achieved.
- the ejector pin is advantageously turned off one in the hole in the press frame, designed as a sliding piston Section and an adjoining this, in the bore of the die protruding portion with a smaller diameter formed by a hole in the press frame on the die side closing cover plate is passed, whereby Apply the preload of the ejector pin against the ejector lever of the area placed between the piston section and the cover plate of the bore in the press Compressed air supply line is connected.
- the compressed air supply line is the desirable one Preload the ejector pin against the ejector lever safely, while at the same time applied compressed air due to its compressibility also a cushioning of suddenly occurring Allows pressure peaks.
- one of the is also particularly preferred Ejector pin independent device for biasing the ejector lever in the direction of used the operating lever so that the roller at the end of the operating lever always with a certain pressure preload against the cam on the ejector shaft becomes.
- This is particularly advantageously carried out so that the independent device from an arranged in another hole in the press frame, against the ejector lever there spring-biased piston, which is located on the facing side of the Ejector lever is supported on this by a slide shoe.
- the support of the ejector pin on the ejector lever is also advantageously carried out via a made suitable slide shoe, the spherical end in a conventional manner of the ejector pin with a complementary receptacle and this opposite is pivotable at least to a certain extent.
- the two sliding shoes preferably run on a side surface of the ejector lever is formed overall as a flat surface and on which the sliding shoes also at one Adjust the support part can slide.
- the ejection device 12 on the die side which is only shown as an example in the drawing, is part a (only partially shown) single or multi-stage press and is used by a (not shown) in a press frame 14 back and forth slidably guided by means of carriage-side forming tools (stamping), which are also not shown, in Manufacture stationary matrices made from workpiece blanks (if necessary gradually) Workpieces, such as screws or bolts or the like, from the die of the forming press eject.
- a support part in the form of a Carriage or slide 20 guided up and down.
- the support member 20 in the working position Ejection device can be fixed on the pressure plate 16.
- a two-armed ejector lever 32 On the support member 20 is a two-armed ejector lever 32 with a longer one on a bolt 30 Lever arm 34a and a shorter lever arm 34b pivotally mounted in the plane of the drawing. On the smaller lever arm 34b of the ejector lever 32 there is a roller 38 on a bolt 36 rotatably arranged.
- the end face of the ejector lever 32 facing the pressure plate 16 is a curved path 40 executed, the course of the curve was determined by calculation.
- the cam track 40 of the Ejector lever 32 cooperates with a pressure piece 44, the concave contact surface 46 represents a shaped surface corresponding to (sections) of the curved path 40 of the lever 32.
- the pressure piece 44 itself can be rotated on a bolt 48 in the pressure plate 16 fixed to the frame stored so that the flat complementary system with an adjustment of the support member 20 the facing curve shape of the cam track 40 of the lever 32 is always guaranteed, because the pressure piece 44 can also perform a slight rotary movement.
- the pressure piece 44 is, as can be seen from the figures, in the form of a cylindrical section designed, only the shaped surface 46 one of the cylindrical shape has a different shape.
- the pressure piece 44 sits in a receiving bore 42 of the pressure plate 16, the Diameter of the receiving bore 42 the outer diameter of the pressure piece 44 equivalent.
- the shorter, remote arm 74 of the actuating lever 56 acts on it by means of one attached contact surface 76 with a in the press frame 14 on a spring mandrel 78 guided, preloaded compression spring 80 together, which is on a plate 82 Press frame 14 supports.
- the roller 62 is always non-positively on the contour of the Cam 70 on.
- the roller 38 attached to the shorter arm 34b of the ejector lever 32 rests on it facing end of the long arm 58 of the operating lever 56 under the action of a in the press frame 14 preloaded compression spring 86 permanently non-positively.
- the compression spring 86 is in a bore 88 running horizontally in the press frame 14 on a spring mandrel 90, which is fixed with a cover plate 92 screwed to the press frame 14 is connected.
- the compression spring 86 is at one end on the cover plate 92 and with its other end on the end face of a guide sleeve 96, in the blind bore 98 immerses the facing, free end of the spring mandrel 90.
- the guide sleeve 96 itself is in a bushing 100 fastened in the press position 14 and arranged coaxially to the bore 88 slidably guided.
- a Pressure piece on the spherical end 102 of the guide sleeve 96 is a Pressure piece in the form of a slide shoe 104 with a dome-shaped receptacle 106 articulated stored put on.
- the press frame 14 is still with a Compressed air supply line 132, which opens into the cylinder bore 110, continuously with compressed air is acted upon and together with the piston 130 in the cylinder bore 110 an air spring formed.
- the ejector lever 32 is on its side facing the two sliding shoes 104 and 124 provided with a flat surface 108, which acts as a counter surface for the sliding shoes 104 and 124 serves and on which this occurs when the lever 32 is adjusted or moved Can perform sliding movements.
- the ejector pin throws a deformed, e. H. z. B. with a Hexagon head provided short workpiece 138 (FIG. 1) or a long workpiece 136 (Fig. 2), each with its shaft in the bore of the fixed die 120 '(Fig. 1) or 120 (FIG. 2) lies from the latter in such a way that the respective workpiece 136 or 138 so in front of the die 120 or 120 'that the front end of the ejector pin 112 after the ejection process is always in the same position Lo as this state in FIG. 3 is shown. This is the position in which the ejected workpiece 136 or 138 (like both 3 is alternatively shown) can be gripped and transported further.
- the front end of the ejector pin 112 must, as long as the workpiece 136 or 138 is formed, be in a retracted position: If it is the long workpiece 136, the facing end of the ejector pin 112 must be in position L 2 in during the forming process of the die 120 (see FIG. 2), while the short end 138 of the ejector pin 112 must be in position L 1 in the die 120 'during the manufacture of the short workpiece 138 (see FIG. 1).
- the ejector pin 112 In each retracted position L 1 or L 2 of the ejector pin 112 or in any position in between, the ejector pin 112 must transmit the pressing force generated by the press slide (not shown) for the forming process into the pressure plate 16 fixed to the frame.
- the pressing force is introduced into the pressure plate 16 via the ejector pin 112, the sliding block 124, the ejector lever 32 and the pressure piece 44.
- the pressure piece 44 with its concave shaped surface 46 always fits snugly on the cam track 40 of the ejector lever 32, so that there is always a flat contact.
- the ejector lever 32 exerts no force on the during the forming process of the workpiece Roller 38, the lever 56 and the roller 62 on the cam 70 of the cam gear 64.
- the cam stands before the start of the ejection process of a formed workpiece Cam 70 on the continuously rotating ejector shaft 68 vertically, d. H. parallel to the pressure plate 16 of the press frame 14, as shown in FIGS. 1 and 2.
- the ejector lever 32 is also simultaneously pivoted about the pin 30 as a fulcrum via the roller 38, which rests firmly against the end of the actuating lever 56 by the force of the spring 86.
- This subsequent movement causes the shaped workpiece to be ejected from the die 120 or 120 'by the ejector pin 112.
- 3 shows a position after a long workpiece 136 or a short workpiece 138 has been ejected from the die 120 or 120 '(namely in position L 0 of the ejector pin 112).
- the cam track 40 of the ejector lever 32 is designed so that it always bears against the complementarily shaped counter surface 46 on the pressure piece 44 in all conceivable positions between L 1 and L 2 in the rear end positions of the ejector pin 112 near the printing plate. This prevents the pin 30, the roller 38, the actuating lever 56, the roller 62 and the cam 70 from acting on the pressing force, which is harmful to such components, during the forming process, which would destroy these parts over time.
- L 2 can be done from any position of the ejector pin 112.
- the control of the forming machine will enter the desired ejection stroke, whereupon the servo motor 22 will be excited and, after releasing the slide lock (not shown), the support part 20 will be moved up or down until the corresponding position of the The pivot point (bolt 30) of the ejector lever 32 and thus the rear starting position for the ejector pin 112 is reached in order to obtain the desired ejection stroke.
- This adjustment of the pivot point 30 of the ejector lever 112 can even be carried out during the operation of the forming machine.
- the sliding shoes 104 and 124 slide on the flat, facing, frontal sliding surface 108 of the ejector lever 32 along and are due to the Biasing by the force of the compression spring 86 or the piston 130 pressurized with compressed air in the cylinder bore 110, always frictionally on this sliding surface 108.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Punching Or Piercing (AREA)
- Press Drives And Press Lines (AREA)
Abstract
Description
- Fig. 1
- eine prinzipielle, teilweise geschnittene Darstellung einer erfindungsgemäßen Vorrichtung mit Auswerferhebel und -stößel in einer ersten Einstellung zum Auswerfen eines kurzen Werkstücks;
- Fig. 2
- eine der Fig. 1 ähnliche Darstellung derselben Auswerfvorrichtung mit Auswerferhebel und -stößel in einer zweiten Einstellung zum Auswerfen eines langen Werkstücks, und
- Fig. 3
- eine Darstellung ähnlich den Darstellungen aus den Fig. 1 und 2, welche dieselbe Auswerfvorrichtung mit Auswerferhebel und -stößel in einer dritten Endstellung zeigt, die der Auswerf-Endstellung entspricht, bei der das lange bzw. kurze Werkstück ausgeworfen ist.
Claims (9)
- Matrizenseitige Auswerfvorrichtung für Werkstücke bei Ein- oder Mehrstufenpressen, bei denen eine auf einem Pressengestell (14) stationäre Preßmatrize (120) vorgesehen ist, die mit einem Preßstempel zur Umformung eines in eine Bohrung der Preßmatrize (120; 120') eingeführten Preßlings (136; 138) zusammenwirkt, mit einem in einer Bohrung (110) im Pressengestell (14) verschiebbar gelagerten Auswerferstift (112; 116), dessen matrizenseitiges Ende in die Bohrung der Preßmatrize (120; 120') ragt und dessen anderes Ende unter Vorspannung gegen einen Auswerferhebel (32) angedrückt ist, der seinerseits von einem über ein Kurvengetriebe (62, 68, 70) angetriebenen Betätigungshebel (56) zwischen einer Ausgangsstellung, bei welcher der Auswerferstift (112) mit seinem matrizenseitigen Ende in die Bohrung der Matrize (120; 120') eingefahren ist, und einer Auswerf-Endstellung verschwenkbar ist und sich auf seiner dem Auswerferstift (112) abgewandten Seite in seiner Ausgangsstellung gegen ein am Pressengestell (14) befestigtes Druckstück (44) abstützt, dadurch gekennzeichnet, daß der Auswerferhebel (32) verschwenkbar auf einem Trageteil (20) sitzt, das am Pressengestell (14) in einer Richtung senkrecht zur Längsachse des Auswerferstiftes (112) und parallel zur Verschwenkebene des Betätigungshebels (56) zwischen zwei Anschlägen (50, 52) verfahrbar ist und auf seiner dem Druckstück (44) zugewandten Seite zur Anlage an diesem mit einer Formfläche (40) versehen ist, die gegen eine komplementäre Formfläche (46) am Druckstück (44) flächig anlegbar ist, wobei in der Ausgangsstellung des Auswerferhebels (32) auch bei einem Verfahren des Trageteiles (20) an beiden Formflächen (40; 46) deren flächig-komplementäre Anlage erhalten bleibt.
- Auswerfvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Formfläche (40) am Auswerferhebel (32) konvex gekrümmt ausgebildet und die komplementäre, konkave Formfläche (46) an einem ansonsten zylindrischen Druckstück (44) vorgesehen ist.
- Auswerfvorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß das Druckstück (44) um eine Mittelachse (48) verschwenkbar auf einer am Pressengestell (14) befestigten Druckplatte (16) angebracht ist.
- Auswerfvorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Trageteil (20) für den Auswerferhebel ein verfahrbarer Stützschieber oder Stützschlitten ist.
- Auswerfvorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Auswerferhebel (32) als zweiarmiger Hebel ausgebildet ist, wobei der Auswerferstift (112) gegen den Endbereich des einen Hebelarmes (34a) anliegt und am Endbereich des anderen Hebelarmes (34b) eine verdrehbare Rolle (38) angebracht ist, die sich gegen den Betätigungshebel (56) abstützt, der, relativ zum Auswerferhebel (32) gesehen, auf derselben Seite von diesem wie der Auswerferstift (112) vorgesehen ist.
- Auswerfvorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Kurvengetriebe für den Betätigungshebel (56) eine auf einer Auswerferwelle (68) angebrachte Kurvenscheibe (70) umfaßt, auf der eine am freien Ende des Betätigungshebels (56) drehbar angebrachte Rolle (62) abläuft, wobei der Betätigungshebel (56) zum Andruck der Rolle (62) an der Kurvenscheibe (70) gegen letztere hin vorgespannt ist.
- Auswerfvorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Auswerferstift aus einem in der Bohrung (110) im Pressengestell (14) angebrachten, als Verschiebekolben (130) ausgebildeten Kolbenabschnitt mit größerem Durchmesser und einem sich an diesen anschließenden, in die Bohrung der Preßmatrize (12) hineinragenden Abschnitt (116) mit kleinerem Durchmesser aufweist, der durch eine die Bohrung (110) im Pressengestellt (14) matrizenseitig verschließende Abdeckplatte (92) hindurchgeführt ist, und daß zum Aufbringen der Vorspannung des Auswerferstiftes (112; 116) gegen den Auswerferhebel (32) der Bereich zwischen dem Kolbenabschnitt (130) mit größerem Durchmesser und der Abdeckplatte (92) der Bohrung (110) im Pressengestell (14) an eine Druckluftzuleitung (132) angeschlossen ist.
- Auswerfvorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß eine vom Auswerferstift (112; 116) unabhängige Vorrichtung zum Vorspannen des Auswerferhebels (32) gegen den Betätigungshebel (58) hin vorgesehen ist.
- Auswerfvorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Vorrichtung zum Vorspannen des Auswerferhebels (32) aus einem in einer weiteren Bohrung (88) im Pressengestell (14) angeordneten, gegen den Auswerferhebel (32) hin federvorgespannten Kolben (96) besteht, der sich an der zugewandten Seite des Auswerferhebels (32) über einen Gleitschuh (104) abstützt.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10213850A DE10213850C1 (de) | 2002-03-27 | 2002-03-27 | Matritzenseitige Auswerfvorrichtung für Werkstücke bei Ein- und Mehrstufenpressen |
| DE10213850 | 2002-03-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1350582A2 true EP1350582A2 (de) | 2003-10-08 |
| EP1350582A3 EP1350582A3 (de) | 2004-07-14 |
Family
ID=7714231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03003766A Withdrawn EP1350582A3 (de) | 2002-03-27 | 2003-02-19 | Matrizenseitige Auswerfvorrichtung für Werkstücke bei Ein- oder Mehrstufenpressen |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20030182981A1 (de) |
| EP (1) | EP1350582A3 (de) |
| DE (1) | DE10213850C1 (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103112199B (zh) * | 2013-02-01 | 2016-02-17 | 中山市胜龙锻压机械有限公司 | 一种凸轮顶料机构 |
| CN104338829B (zh) * | 2014-10-13 | 2017-02-15 | 重庆延锋江森汽车部件系统有限公司 | 一种用于汽车座椅靠背上横板侧翻孔的模具 |
| CN109365667B (zh) * | 2018-11-30 | 2023-10-10 | 鑫望威科技有限公司 | 一种汽车轮毂模具的脱模机构及其脱模方法 |
| CN113579212B (zh) * | 2020-04-30 | 2023-05-16 | 富鼎电子科技(嘉善)有限公司 | 顶出装置 |
| CN115365446B (zh) * | 2022-07-26 | 2026-01-23 | 江阴东邦钢球机械有限公司 | 一种钢球快锻机活动模顶出机构 |
| CN116275035B (zh) * | 2023-03-29 | 2025-02-25 | 株洲钻石切削刀具股份有限公司 | 一种带内冷孔压坯的压制装置及压制方法 |
| CN119369603B (zh) * | 2024-11-21 | 2025-10-28 | 九江迅威新材料有限公司 | 3d成型模压玻纤板治具及其工作方法 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3266071A (en) * | 1965-03-29 | 1966-08-16 | Hilgeland Fa Geb | Cam-controlled apparatus for throwing out the bolts from the counter punch of bolt presses or the like |
| DE1627977B2 (de) * | 1967-02-06 | 1978-01-05 | Vyzkumny ustav tvarecich stroju a technologie tvareni, Brunn (Tschechoslowakei) | Auswerfvorrichtung an einer mechanischen presse |
| DE1927830A1 (de) * | 1969-05-31 | 1970-12-17 | Schuler Gmbh L | Vorrichtung zum Auswerfen von Werkstuecken aus Pressmatrizen |
| DE3806352A1 (de) * | 1988-02-27 | 1989-09-07 | Schuler Gmbh L | Vorrichtung zum auswerfen von werkstuecken aus matrizen in einer umformpresse |
| IT1303027B1 (it) * | 1998-04-17 | 2000-10-20 | Carlo Salvi & C S R L | Dispositivo di regolazione per la formatura di minuterie metalliche |
| DE10007255A1 (de) * | 2000-02-17 | 2001-09-06 | Wafios Ag | Einrichtung zum stempelseitigen Auswerfen von Werkstücken für Ein- oder Mehrstufenpressen |
-
2002
- 2002-03-27 DE DE10213850A patent/DE10213850C1/de not_active Expired - Fee Related
-
2003
- 2003-02-19 EP EP03003766A patent/EP1350582A3/de not_active Withdrawn
- 2003-03-27 US US10/400,215 patent/US20030182981A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| EP1350582A3 (de) | 2004-07-14 |
| US20030182981A1 (en) | 2003-10-02 |
| DE10213850C1 (de) | 2003-06-05 |
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