EP0929370A1 - Dispositif pour le transport automatique de pieces sur une machine de formage a etages multiples - Google Patents

Dispositif pour le transport automatique de pieces sur une machine de formage a etages multiples

Info

Publication number
EP0929370A1
EP0929370A1 EP97918875A EP97918875A EP0929370A1 EP 0929370 A1 EP0929370 A1 EP 0929370A1 EP 97918875 A EP97918875 A EP 97918875A EP 97918875 A EP97918875 A EP 97918875A EP 0929370 A1 EP0929370 A1 EP 0929370A1
Authority
EP
European Patent Office
Prior art keywords
pliers
box
tong
forming
workpieces
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97918875A
Other languages
German (de)
English (en)
Other versions
EP0929370B1 (fr
Inventor
Ulrich Steinhauser
Stefan STÖCKLE
Christoph Pergher
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
Publication of EP0929370A1 publication Critical patent/EP0929370A1/fr
Application granted granted Critical
Publication of EP0929370B1 publication Critical patent/EP0929370B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

Definitions

  • the present invention relates to a device for the automatic transport of workpieces on a multi-stage metal forming machine which is used for non-cutting forming of metal parts, as defined in the preamble of independent claim 1.
  • Such a device known from EP-B-0 206 186, has an upper and a lower transverse transport tube, which is driven in the working cycle of the forming machine and is guided back and forth in its forming area in fixed bearings, to which an upper or lower tong box is attached is.
  • the two transverse transport tubes are connected by a yoke to form a slidingly displaceable unit.
  • Workpieces are gripped by means of paired pliers grippers, one in each case in the upper pliers box and the other in the lower pliers box and the opening and closing movement of the pliers formed by the respective interacting pliers grippers in the form of control shafts rotatably arranged in the transverse transport tubes is controlled by camshafts via transmission levers.
  • Such pliers easily enable the detection of workpieces of very different sizes in hot-forming machines.
  • a disadvantage of this device is that a gripper is moved from below to grasp a workpiece, which means that the gripper is at great risk of colliding with falling parts.
  • the pliers In addition, grippers are particularly exposed to heavy soiling, for example from lubricants and / or scale and / or water, in hot-forming machines.
  • two camshafts are required for controlling the opening and closing movement of the pliers and two cross transport tubes for the reciprocating movement of the pliers, the movements of the two camshafts and the two cross transport tubes each having to be coordinated.
  • the invention is based on the following object.
  • a device of the type mentioned at the beginning for the automatic transport of workpieces on a multi-stage forming machine which does not require a pliers gripper to be gripped from below, whereby it should be ensured in a simple and inexpensive manner that workpieces of very different diameters or graded workpieces, such as flange shafts or similar parts with different diameters, can be captured at freely selectable locations.
  • the device should be constructed as simply as possible.
  • a device which is attached to a transverse transport tube brought pliers box comprises a pliers box base body, on which one or more interchangeable pliers cassettes, each with a pair of pliers, with which a workpiece can be gripped laterally from above, are arranged.
  • Each pair of pliers is connected via a coupling point to the associated transmission means, which are arranged in the pliers box body and have a plier curve for controlling the opening and closing movement of the pliers, which are in turn operatively connected to a control shaft rotatably mounted in the transverse transport tube.
  • the transport of a workpiece, which is gripped by a pair of pliers with pair of pliers grippers, from one forming station to the adjacent forming station and the return movement of the pliers takes place by means of the back and forth movement of the cross transport tube, which is driven in the working cycle of the forming machine and is guided in its bearing area in fixed bearings.
  • the device according to the invention is also of simple construction since the tongs are arranged on a single tongs box attached to a transverse transport tube and the opening and the closing movement of the pliers is controlled by a single control shaft.
  • the pliers stroke can be optimally adapted to the different workpieces by using pliers cassettes with pliers with suitable lever ratios and / or setting or exchanging the pliers curves for controlling the pliers, so that, among other things, no unnecessarily large pliers movements have to be carried out.
  • pliers with suitable lever ratios it is possible to grasp relatively large workpieces without the pliers getting in the way of neighboring pliers cartridges.
  • workpieces with large flanges can also be gripped at locations with a small diameter, the pliers then performing a large stroke due to the space requirement of the flange.
  • each pliers is connected to the transmission means assigned to it in the pliers box base body via only one coupling point. is the one that creates the connection to the control shaft for controlling the opening and closing movements.
  • the opening and closing movement sequence of each pliers can be set individually.
  • the setting is also user-friendly, since the control shaft does not have to be removed from the transverse transport tube as in the previously known devices.
  • the transmission means assigned to a pliers comprise a pliers drive shaft arranged at right angles to the control shaft, which is operatively connected to it via a bevel gear, on which the pliers curve is arranged, with which via at least one further lever, one end of which has the coupling point with the pliers or a pliers arm is operatively connected, the opening and closing movement of the pliers is controlled.
  • This embodiment variant has the advantage that the tong drive shaft controlling the opening and closing movement of a tong by means of a tong curve rotates in the direction of the opening and closing movement, that is to say that no movement deflection is necessary.
  • the mass after the pliers curve can be kept lower than in the previously known devices, which allows faster and more precise movement.
  • the vibration behavior is improved.
  • the movement deflection between the control shaft and the pinion drive shaft via a bevel gear has no negative influence on the vibration behavior, if the speed of rotation of the control shaft is constant in normal operation.
  • the cross transport pipe to which the pliers box is attached is rotatably arranged so that by rotating the cross transport pipe by means of a cross transport pipe arranged outside the forming area -
  • the rotating device of the pliers box can be raised or lowered.
  • the pliers cassettes are preferably arranged in a cassette holder which is connected to the plier box base body via a cassette carrier pivot axis and when the plier box is lifted up in this way is controlled that it is pivoted in the opposite direction together with the pliers cartridges.
  • At least one pivoting curve is advantageously provided on the already existing control shaft, a plunger or lever being arranged between the pivoting curve and the cassette carrier.
  • the coupling points of the pliers with the respectively assigned transmission means arranged in the pliers box base body are arranged in the region of the cassette carrier pivot axis.
  • the pliers box is supported in its lowered position on the anvil, the support being carried out by means of a rolling or sliding guide which ensures that the pliers are vertical in the forming stations are positioned exactly. In this way, the vertical positioning accuracy of the pliers is decoupled from the movement mechanism.
  • FIG. 1 shows a schematic view of a transport device according to the invention on a four-stage forming machine
  • FIG. 2 shows a part of the device from FIG. 1 in the forming area of the forming machine, three pliers with different strokes being shown;
  • FIG. 5 shows a plan view of a part of the device from FIG. 1 in the forming area of the forming machine to illustrate the opening and closing movement of the pliers;
  • FIG. 6 shows a part of the device from FIG. 1 in the shaping and shaping area of the shaping machine, with four pincer drives being shown to illustrate the opening and closing movement and the exact positioning of the pliers in contrast to FIG. 1;
  • Fig. 7 is a perspective view of a coupling of the gun arm and gun drive lever
  • FIG. 13 shows a cross section through the transverse transport drive device according to line A-A in FIG. 12;
  • FIG. 14 shows a front view of the transverse transport drive device from FIG. 12;
  • FIG. 16 shows a side view of the cross transport tube rotating device from FIG. 15.
  • a device according to the invention for the automatic transport of workpieces is arranged on a four-stage forming machine which is used for non-cutting forming of metal parts and which has a machine body 6, a shearing station S and an anvil 8 with four forming stations U1, U2, U3, U4.
  • the transport device is provided with a transverse transport tube 2, which is mounted in the transverse transport tube bearings 20, 21 mounted in the machine body 6 and can be moved back and forth in the transport direction and in which a control shaft 3 is arranged coaxially.
  • the tube 2 In the forming area of the forming machine, the tube 2, a pliers box 1 with a pliers box base body 10, a cassette holder 11 and three pliers cassettes 12a, 12b, 12c are attached, the pliers cassette 12a not being shown here, so that the part of the cassette holder 11 behind it with fastening thread 125 is visible.
  • the pliers cassettes 12a, 12b, 12c each have pliers with pliers arms 13, 14 and are fastened to the cassette carrier 11 by means of central cassette fastening screws 121. In the square opening 119 in the cassette holder 11 one can see one end of a tong drive lever 18 in the left and right end positions.
  • Support bolts 152 on the pliers cartridges serve to stabilize the pliers cartridges 12a, 12b, 12c on the cartridge carrier 11.
  • the ends of the swivel joints 132, 142 and the support bolt 152 on the box carrier side rest on the support elements 122 and 123, respectively, and thus form a centering 3-point support for each pliers cassette.
  • the pliers of the pliers cassette 12c are in their closed position and grips a workpiece W3, while the pliers of the pliers cassette 12b are in their open position and have not yet gripped a workpiece W2.
  • the opening and closing movement of the pliers is controlled by the control shaft 3, which is driven by a control shaft drive device 30 arranged outside the forming area of the forming machine.
  • the back and forth movement of the cross Transport tube 2 is carried out by means of a transverse transport drive device 4, and by means of a transverse transport tube rotating device 5, the transverse transport tube 2 is rotated to raise and lower the pliers box 1.
  • the transverse transport drive device 4 and the transverse transport tube rotating device 5 are likewise arranged outside the forming area of the forming machine and are described in more detail below.
  • the workflow is generally as follows: The tongs capture their respectively assigned workpieces, are moved from one forming station U1, U2, U3 to the respectively adjacent forming station U2, U3, U4 by moving the transverse transport tube 2 and release the workpieces there for the forming process.
  • the pliers box 1 with the pliers is then raised by turning the cross transport tube 2, the cross transport tube 2 with the pliers box 1 is pushed back again and the pliers box 1 is lowered again into the starting position.
  • the three pliers of the pliers cassettes 12a, 12b, 12c are each in their closed position, in which they grip three workpieces W1, W2, W3, and their open position. posed .
  • Each pair of pliers comprises two pliers arms 13, 14, which are designed as double-armed levers and are rotatably suspended on pivot joints 132, 142, one end of which is formed by pliers grippers 130, 140 provided with pliers shoes 131, 141.
  • the forceps grippers 130, 140 are connected to the rest of the forceps arms 13, 14 via predetermined breaking points 133, 143, so that in the event of a malfunction during the forming process, only the forceps grippers 130, 140 generally break off and the rest of the device remains intact.
  • the predetermined breaking points 133, 143 are preferably monitored using sensors 134, 144.
  • the swivel joints 132, 142 of each pliers are arranged so that the lengths of the two levers of each pliers arm 13, 14 are selected such that the pliers have a pliers stroke suitable for the workpiece W1, W2, W3 to be gripped.
  • the pliers cartridges 12a, 12b, 12c are shown here with pliers that are suitable for workpieces of small, medium and large diameters. By exchanging pliers cassettes, the transport device of the forming machine can be easily changed over to new workpieces during a production changeover.
  • the pliers are opened and closed by rotating the pliers arms 13, 14 about the rotary joints 132, 142.
  • one end of the pliers arm 14 is coupled at a coupling point 19 to transmission means arranged in the pliers box base body 10, which transfer the rotation of the control shaft 3 into a suitable one Convert back and forth motion.
  • the tongs arm 13 is rotated by the tongs arm 14 via guide surfaces 135, 145 arranged on the two tongs arms 13, 14 and in operative connection.
  • a spring 136 provides for the fact that the guide surface 135 is constantly pressed against the guide surface 145 and that the pliers are pretensioned in such a way that they tend to close.
  • FIG. 2 it can also be seen that the cassette carrier 11 is pivotably attached to the base body 10 of the pliers box by means of preferably preloaded roller bearings 110.
  • the purpose of this arrangement is explained below in connection with FIGS. 8 and 9.
  • a punch holder 7 for receiving forming dies is arranged opposite the anvil 8, the pliers for the workpiece transport reaching into the space between the punch holder 7 and the anvil 8.
  • transmission means are provided between the control shaft 3 and the pliers arm 14, which include a pliers drive shaft 15 with a pliers curve 16, a roller lever 17 and a pliers drive lever 18.
  • the generally uniform rotation of the control shaft 3 is transmitted via a bevel gear 150 to the tong drive shaft 15, on which the tong curve 16 is attached.
  • a roller 170 which is rotatably arranged on a first end of a roller lever 17 rests on the pliers curve 16 (see FIGS. 3 and 6), while the second end of the roller lever 17 is fixedly connected to a first end of the tong drive lever 18 (see FIGS. 4 to 6).
  • the second end of the tong drive lever 18 is via a coupling device 180 rotatably connected to the gun arm 14 (see FIGS. 4 and 6).
  • the first gun drive lever 18 is shown from the left in a position in which the associated gun is closed, while the second gun drive lever 18 is shown from the left in a position in which the associated gun is open.
  • the pliers curve 16 which rotates due to the rotation of the pliers drive shaft 15, presses the first end of the roller lever 17 carrying the roller 170 downward when the pliers are opened, as a result of which the pliers drive lever 18 is rotated to the left.
  • a spring 171 attached to the body of the pliers box pushes the pliers drive lever 18 to the right, as a result of which the first end of the roller lever 17 is moved upward, so that the roller 170 always bears against the pliers curve 16.
  • the pliers curve 16 can be adjusted through an adjustment opening 161 (see FIG. 3) which is present in the pliers box body and can be closed with a cover 162, so that different opening and closing movement sequences and pliers strokes can be set in a simple manner.
  • two plungers 112 can be seen, which are arranged between pivoting curves 111 attached to the control shaft 3 and the cassette carrier 11 and serve to pivot the cassette carrier 11 relative to the pliers box base body 10, which is described in more detail in connection with FIGS. 8 and 9 .
  • the pliers box 1 is provided with a roller 101 with which it is supported on the ruler 80.
  • the vertical positioning accuracy of the pliers in the forming stations U1, U2, U3, U4 is in this way independent of the accuracy when lowering and moving the pliers box 1 in the transport direction. Two variants of attaching the roller 101 to the pliers box 1 are explained in connection with FIGS. 10 and 11.
  • the pliers arm 14 has at its end facing the coupling device 180 a coupling bolt 146 on which a first cubic part 182 is rotatably mounted.
  • the coupling device 180 further comprises a second cubic part 181, which is rotatably mounted on a second coupling bolt 185, which is approximately at right angles to the first and which is attached to the tong drive lever 18.
  • the two cubic parts can be rotated and displaced relative to one another via sliding surfaces 183, 183 '. In this way, a transmission of the movement of the tong drive lever 18 to the tong arm 14 is made possible even when the cassette carrier 11 is pivoted - with the tong arm 14 - relative to the tong box base body 10 - with the tong drive lever 18.
  • Changing the pliers cassette can result in different lever lengths of the pliers arm 14 (shown in dashed lines), and the cubic parts 181, 182 can be rotated and, under certain circumstances, be coupled again via two other sliding surfaces. _, r
  • the pliers drive lever 18 is provided with an extension 184 for the roller lever 17 which extends at right angles from the lever base body.
  • the lower part of the cassette carrier 11 which bears the pliers and is directed towards the anvil 8 about a cassette carrier pivot axis 113 at the same time.
  • the pivoting is controlled by the pivoting curve 111 attached to the control shaft 3, a pivoting spring 114 exerting a force which presses the lower cassette carrier part against one end of the plunger 112, the other end of which rests against the pivoting curve 111.
  • two pivot springs 114, two plungers 112 and two pivot curves 111 are advantageously present (see FIG. 5).
  • the pliers box 1 is additionally shown in a position completely raised from the anvil 8, into which it is brought for tool changes or maintenance work in the tool room.
  • the tongs box 1 is supported in the embodiment variant shown in FIG a roller 101, which is rotatably mounted on the pliers box base body 10, on the ruler 80 attached to the anvil 8, while in the embodiment variant shown in FIG 101 guaranteed with the ruler 80.
  • the guide rods 46, 47 are attached to the machine body 6 by means of fastening elements 461, 462, 471, 472.
  • transverse transport tube 2 is mounted in the crosshead 40 in such a way that it is rotatably and axially pretensioned to it. In this way, lifting and lowering and, on the other hand, moving the tong box 1 back and forth is made possible by rotating or displacing the transverse transport tube 2.
  • the control shaft 3 is driven here with a control shaft drive device 30 which has a drive shaft 31 arranged parallel to the control shaft 3.
  • the rotation of the drive shaft 31 is via a gear train 32 on the Transfer control shaft 3.
  • the transverse transport tube rotating device 5 for rotating the transverse transport tube 2 comprises two control cams 51, 52, against each of which a roller 531, 532 of a drive lever 53 rotatable about an axis 54 bears.
  • a compensating lever 56 is articulated to the drive lever 53 via a pivot pin 55.
  • the compensating lever 56 has a contact surface 561 which, in the starting position shown in FIG. 15, is pressed by a compensating spring 50 against a contact surface 533 on the drive lever 53.
  • the compensating lever 56 is articulated to the lower end of a coupling rod 58 via a further pivot pin 57.
  • the upper end of the coupling rod 58 is connected to a cuff-like transmission lever 59 which is arranged around the transverse transport tube 2 and which transmits coupling rod movements to the transverse transport tube 2.
  • This can be achieved, for example, by means of a press connection, controllable with fluid cylinders, between cross transport tube 2 and transmission lever 59, in order to be able to bring the pliers box 1 into the completely raised position shown in FIG. 8 by releasing the press connection.
  • the pliers box 1 In the starting position shown in FIG. 15, the pliers box 1 is in the lowered position and the pliers are assigned to the first three forming stations U1, U2, U3.
  • the pliers move to the adjacent forming stations U2, U3, U4, ie a transverse displacement of the transverse transport tube 2 to the right, as can be seen in FIG. 17, the upper end of the coupling rod 58 is displaced to the right and in a first phase of movement - supply until the coupling rod 58 has reached the vertical position, the pivot pin 57 with the associated end of the compensating lever 56 pressed down and the contact surface 561 upwards.
  • a gap 500 opens between the two contact surfaces 533 and 561.
  • the gap 500 is closed again since the pivot pin 57 with the end of the compensating lever 56 assigned to it is pulled up again and the contact surface 561 is thus pressed down.
  • the pliers box 1 is at the end of the transverse displacement to the right, in which the workpieces W1, W2, W3 have already been taken over by the forming stations U2, U3, U4 and released by the pliers grippers.
  • the drive lever 53 was rotated counterclockwise and had pressed the contact surface 561 of the compensating lever 56 upward and thus the pivot pin 57 downward.
  • the coupling rod 58 was pulled down, which caused the transverse transport tube 2 to be rotated and the pliers box 1 to be raised via the transmission lever 59 caused.
  • the pliers box 1 is ready to be moved back.
  • this can also compensate for the forceps opening or change of the pinion gear 150 arranged on the pinion drive shafts 15 when the pinion drive shafts 15 are raised or lowered onto the gear cones arranged on the control shaft 3
  • the pliers closing speed can be varied accordingly during the lifting and lowering of the pliers box 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Specific Conveyance Elements (AREA)
  • Labeling Devices (AREA)
  • Intermediate Stations On Conveyors (AREA)
  • Punching Or Piercing (AREA)

Abstract

L'invention concerne un dispositif pour le transport automatique de pièces sur une machine de formage à étages multiples, comportant une boîte à pinces (1) située sur un tube de transport transversal (2). Cette boîte à pinces (1) comprend un corps de base (10) sur lequel sont placées des cassettes interchangeables (12a, 12b, 12c) possédant chacune une paire de pinces permettant la préhension latérale d'une pièce (W2, W3) depuis le haut. Chaque paire de pinces est reliée, par l'intermédiaire d'un point d'accouplement (19), à des moyens de transmission associés. Ces moyens coopèrent avec un arbre de commande (3) monté rotatif dans le tube de transport transversal (2) et permettant de commander le mouvement d'ouverture et de fermeture des pinces. Le transport d'une pièce (W2, W3), saisie par une paire de pinces pourvues de griffes (130, 140) coopérant par paire, depuis un poste de formage (U1, U2, U3) jusqu'au poste de formage voisin (U2, U3, U4), et le mouvement de retour des pinces sont assurés par un mouvement alternatif du tube de transport transversal (2). L'emploi de cassettes (12a, 12b, 12c) comportant des pinces présentant des coefficients d'articulation appropriés permet d'adapter la course des pinces aux pièces (W2, W3).
EP97918875A 1996-10-03 1997-09-29 Dispositif pour le transport automatique de pieces sur une machine de formage a etages multiples Expired - Lifetime EP0929370B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH241096 1996-10-03
CH241096 1996-10-03
PCT/CH1997/000366 WO1998014289A1 (fr) 1996-10-03 1997-09-29 Dispositif pour le transport automatique de pieces sur une machine de formage a etages multiples

Publications (2)

Publication Number Publication Date
EP0929370A1 true EP0929370A1 (fr) 1999-07-21
EP0929370B1 EP0929370B1 (fr) 2001-05-23

Family

ID=4233148

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97918875A Expired - Lifetime EP0929370B1 (fr) 1996-10-03 1997-09-29 Dispositif pour le transport automatique de pieces sur une machine de formage a etages multiples

Country Status (13)

Country Link
US (1) US6247578B1 (fr)
EP (1) EP0929370B1 (fr)
JP (1) JP3397327B2 (fr)
KR (1) KR100322945B1 (fr)
CN (1) CN1072045C (fr)
AU (1) AU4293597A (fr)
CZ (1) CZ288949B6 (fr)
DE (1) DE59703614D1 (fr)
EA (1) EA000551B1 (fr)
ES (1) ES2157069T3 (fr)
TW (1) TW378163B (fr)
UA (1) UA49038C2 (fr)
WO (1) WO1998014289A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1211171C (zh) * 1999-07-29 2005-07-20 哈特伯金属成型机股份公司 用于产生升降运动的装置
TWM458366U (zh) 2012-11-30 2013-08-01 Shimano Kk 驅動裝置、及座墊支柱驅動機構
CN115338303B (zh) * 2022-08-22 2023-08-18 东莞市京优精密机械有限公司 一种龙门型高速冲床及其使用方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2929800A1 (de) * 1977-09-13 1981-02-12 Nedschroef Octrooi Maats Vorrichtung zum transport von bolzen, muttern o.dgl. auf werkzeugmaschinen
ATE39633T1 (de) 1985-06-24 1989-01-15 Hatebur Umformmaschinen Ag Einrichtung zum automatischen transport von werkstuecken an einer mehrstufigen umformmaschine.
US4966028A (en) * 1988-11-14 1990-10-30 Kabushiki Kaisha Sakamurakikai Seisakusho Multi-stage cold forging machine
US5713236A (en) * 1995-02-08 1998-02-03 The National Machinery Company, Pick and place transfer
JP3037672U (ja) * 1996-11-11 1997-05-20 株式会社阪村機械製作所 多段式圧造成形機の素材移送装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9814289A1 *

Also Published As

Publication number Publication date
KR20000022397A (ko) 2000-04-25
CZ288949B6 (cs) 2001-10-17
US6247578B1 (en) 2001-06-19
JP2000507509A (ja) 2000-06-20
UA49038C2 (uk) 2002-09-16
AU4293597A (en) 1998-04-24
DE59703614D1 (de) 2001-06-28
CN1228723A (zh) 1999-09-15
CZ111399A3 (cs) 2000-07-12
JP3397327B2 (ja) 2003-04-14
ES2157069T3 (es) 2001-08-01
KR100322945B1 (ko) 2002-10-25
WO1998014289A1 (fr) 1998-04-09
TW378163B (en) 2000-01-01
EA199900076A1 (ru) 1999-08-26
CN1072045C (zh) 2001-10-03
EA000551B1 (ru) 1999-10-28
EP0929370B1 (fr) 2001-05-23

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