EP0200775B1 - Stanzvorrichtung - Google Patents

Stanzvorrichtung Download PDF

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Publication number
EP0200775B1
EP0200775B1 EP85905793A EP85905793A EP0200775B1 EP 0200775 B1 EP0200775 B1 EP 0200775B1 EP 85905793 A EP85905793 A EP 85905793A EP 85905793 A EP85905793 A EP 85905793A EP 0200775 B1 EP0200775 B1 EP 0200775B1
Authority
EP
European Patent Office
Prior art keywords
punching
interval
swivel
previous
swivel arm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP85905793A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0200775A1 (de
Inventor
Helmut Thurner
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.)
Bayrisches Druckguss-Werk Thurner & Co KG GmbH
Bayerisches Druckgusswerk Thurner KG
Original Assignee
Bayrisches Druckguss-Werk Thurner & Co KG GmbH
Bayerisches Druckgusswerk Thurner KG
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 Bayrisches Druckguss-Werk Thurner & Co KG GmbH, Bayerisches Druckgusswerk Thurner KG filed Critical Bayrisches Druckguss-Werk Thurner & Co KG GmbH
Priority to AT85905793T priority Critical patent/ATE31645T1/de
Publication of EP0200775A1 publication Critical patent/EP0200775A1/de
Application granted granted Critical
Publication of EP0200775B1 publication Critical patent/EP0200775B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S83/00—Cutting
    • Y10S83/914—Flash trimming
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2066—By fluid current
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2096—Means to move product out of contact with tool
    • Y10T83/2122—By ejector within a hollow cutter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2198—Tiltable or withdrawable support
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/444—Tool engages work during dwell of intermittent workfeed
    • Y10T83/4604—Work feed functions as tool support
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/444—Tool engages work during dwell of intermittent workfeed
    • Y10T83/4607—With rotary work-carrier

Definitions

  • the invention relates to a punching device for automatic deburring of injection molded or cast parts with the features of the preamble of claim 1.
  • a device for removing workpieces from a printing or spraying machine in which a punching tool consisting of a punching die and a counterform is arranged on a machine frame deburr the workpiece provided with casting or injection burrs.
  • a punching tool consisting of a punching die and a counterform
  • one of the two cutting tool halves is slidably attached to the machine frame for opening the punching tool.
  • a workpiece transfer device is provided which has a swivel arm which can be swiveled intermittently about a pivot axis fixed to the frame, at the end of which a workpiece holder is provided which can accommodate the molding to be deburred.
  • the take-over device consists of a carrier mounted on a horizontal drive shaft, on which - offset by 90 ° in each case - four cylinder piston units are arranged, on the piston rods of which a transfer arm suitable for receiving a workpiece is arranged .
  • the transfer movement thus takes place in a vertical plane, although a purely circular movement is not sufficient for receiving and transferring the workpieces into the die, but a relatively complicated movement sequence must be controlled, which on the one hand consists of a multiple linear movement of the cylinder piston units and on the other hand from one the rotational movement superimposed displacement movement of the carrier on the drive shaft.
  • the known device is not only relatively complicated in construction, but the arrangement of the workpieces on relatively thin, long piston rods also makes it difficult to transfer heavy moldings through the transfer device. This is all the more so since, in the prior art, the molded articles are attached to the piston rods of the transfer device by sprue bars, the inherent rigidity of which, in particular when hot, is not sufficient to withstand high bending moments and thus to carry heavier shapes. Finally, in the device according to the prior art, it is necessary to provide the deburring machine directly next to the casting mold, which does not always have to be advantageous for reasons of internal space.
  • the invention has for its object to provide a punching device suitable for deburring even relatively massive moldings, which is simple and robust and the workpiece transfer device with simple movements, an exact feeding of the workpiece to the punch and a separation of the deburred moldings from the stamped waste parts enables in a simple manner.
  • the invention advantageously makes use of the feature that the workpiece holder for transferring the molding into the punching position is formed by the punch die, which is rigidly attached to the end of the swivel arm at a constant distance from the swivel axis runs through a simple circular path.
  • the entire swivel device can be made relatively rigid, so that even very heavy cast parts such as engine blocks and the like. Like. Can be easily transferred from one position to another.
  • the swivel movement it is also possible to have different processes run in different swivel positions, namely in a first swivel position feeding the workpiece into the punch die, in a second swivel position the actual punching process and in a third swivel position ejecting the punched burrs a waste collector.
  • the main plane of the workpiece holder in the first cycle position, in which the workpiece is fed runs obliquely upwards, since lateral feeding of the workpiece is then possible, and at the same time, due to the weight of the workpiece, secure storage in the stamping die is ensured without additional holding forces .
  • the punching process should be carried out by a punching movement directed from top to bottom, because then the relatively high acceleration peaks can be introduced into the substructure of the machine frame relatively easily.
  • the punch die In the third cycle position (ejection position), it is advantageous if the punch die is pivoted so that its surface points obliquely downward, because the waste can then fall more or less independently into the waste collector.
  • the die can not only be re-loaded in the first cycle position, but simultaneously - if necessary, by a counter mold arranged ejection device - the molding can be released from the mold and automatically released into a workpiece collector when the workpiece holder is pivoted into the second cycle position.
  • the collecting device is advantageously designed as a slide which is approximately horizontal in the first cycle position and which, in the second cycle position, points obliquely downward towards the workpiece collector. In order to the workpiece released from the counter-shape first falls into the slide and is then - as it were in sync with the swivel movement - gently accelerated by the sloping course of the slide and slides into the waste collector.
  • the molding is taken along by the counter-mold which lifts upwards from the punching die and remains clamped there until the punching die has moved from the third cycle position to the first cycle position. Then a workpiece ejection device takes effect, which pushes the molded part out of the clamping seat of the counter mold onto the slide underneath, after which - as already described above - when the punch die is pivoted, it reaches the second cycle position of the molded part in the workpiece collector.
  • the punching force does not exert any tilting moments on the punch die and thus on the swivel arm and the associated drive parts. Rather, the punching force is introduced directly into the machine frame via the bearings of the swivel axis. This not only protects the load-absorbing machine parts, but also achieves an exact punching result. This can be further improved by the fact that the direction of the punch stroke is directed vertically from top to bottom and also runs through the pivot axis. This means that the counter-shape, the punch die and the swivel axis in the second cycle position (working position) are in a vertical position one above the other and thus (in relation to the effect of gravity) tilt-free.
  • the swivel arm is bent on one side approximately U-shaped or crescent-shaped, the deflection running in the swivel plane. This can advantageously be achieved that the swivel arm and the parts attached to it, namely the punch die and the slide, when swiveling into the second cycle position, engage laterally like a hook between the guide columns, on which the counterform is guided during its vertical punching movement.
  • a support bearing is provided on the machine frame, on which the bottom side of the punch die rests in the second swivel position (working position).
  • the swivel arm overlaps the support bearing on the side.
  • the surface of the support bearing is at least partially beveled on one side in the pivoting direction.
  • a drive cylinder for example a hydraulic cylinder
  • the piston rod of which is connected to an extension of the swivel arm which projects beyond the swivel axis.
  • the connection is made by a knee joint, the extension should point in the direction of the punch stroke in the second cycle position and the knee joint is preferably stretched in this cycle position, so that a certain locking of the punching / pivoting position can be achieved in that the piston in the Drive cylinder is held in its dead center position.
  • a gearwheel which is rotatably mounted on the swivel arm is provided on the swivel axis and a toothed rack driven by a further drive cylinder meshes with its teeth. If the dead center lock in the first drive cylinder is released, the rack arm can pivot the swivel arm from the second to the first or third cycle position.
  • the parts interacting with the punch die must be arranged on a circular path due to the circular movement of the punch die, it is advantageous to utilize the space between the first and the half space on the side of the pivoting-out movement provide a pivot angle of approximately 50 ° in the second cycle position and a pivot angle of approximately 75 ° between the first and third cycle positions. Due to the relatively large swivel angle between the first and third cycle positions, the surface of the punch die points downward in the third cycle position, so that the stamped waste parts can easily fall out of the die.
  • the workpiece feed device is preferably designed as a conveyor stamp which can be pivoted linearly against the pivot axis, the end face of which carries the workpiece to be supplied, the displacement movement of the stamp including an angle of approximately 50 ° with the direction of the punch stroke, so that the workpiece is flat in the first cycle punch die is inserted.
  • a spray device can be provided with which a lubricant is sprayed onto the surface under pressure, which at the same time achieves a certain pre-lubrication effect for the next stamping process.
  • the punching device 10 for the automatic deburring of injection molded or cast parts essentially consists of a machine frame 14 on which two interacting cutting tool halves (punch die 16, counter mold 18) are arranged, the counter mold 18 being arranged along vertical, frame-fixed guide struts 20 is slidable to open the punch.
  • a transfer device, generally designated 24 is pivotally pivoted on the machine frame 14, which essentially consists of a pivot arm 26 and a workpiece holder attached to the end of this pivot arm 26 for receiving the blank 12 to be deburred.
  • the workpiece holder is formed by the punch die 16, which can therefore be moved together and in synchronism with the swivel arm 26 in three different cycle positions, the punch die 16 generally being at a constant distance from the swivel axis 22 and the die main plane 28 always parallel to the swivel axis 22 lies.
  • the surface 28 of the punch die 16 points against a workpiece feed device 30, which is designed as a conveying punch 32 directed against the pivot axis 22, which carries the molding 12 to be fed on its end face 34.
  • the surface 28 of the stamping die 16 is parallel to the underside 36 of the counterform 18, in the third cycle position (ejection position, see FIG. 3) the surface 28 is directed towards a waste collector 38, which consists for example of a conveyor belt 40 and a waste basket 42.
  • the surface 28 of the stamping die 16 extends obliquely upwards in the first cycle position, horizontally in the second cycle position and obliquely downwards in the third cycle position, the entire pivoting movement of the swivel arm 26 and the punching matrix 16 attached to it plays essentially in the embodiment shown in the drawing figures to the left of the swivel axis 22 from the half space, so that the feed device 30 and the waste collector 38 are also arranged to the left of or on the machine frame 14.
  • a collecting device 46 which is designed as a slide which is approximately horizontal in the first cycle position and sloping downwards in the second cycle position, the lower end 48 of which in the second cycle position is formed against a basket Workpiece collector 50 stands so that the molded articles 12 'deposited on the collecting device 46 in the first cycle position slip into the workpiece collector 50 in the second cycle position in the direction of the arrow 52.
  • an ejection device in the form of a plunger 58 is provided, which can be displaced in the punching direction 56 in the counter mold 18 and whose lower end face 60 acts on the clamped workpiece 12 'and expresses it from the counter mold.
  • the central perpendicular 62 of the punch die 16 runs through the center of the pivot axis 22, so that the punching direction 56 and the central perpendicular 62 are aligned with one another in a second cycle.
  • the swivel arm 26 is bent on one side in the swivel plane (paper plane of the drawing figures) between the swivel axis 22 and the punch die 16, so that the upper part of the swivel arm 26 provided with the punch die 16 and the collecting device 46 is swung into the second cycle position between the (Four in the exemplary embodiment) guide struts 20 can retract.
  • the underside of the punch die 16 or the inner contour 64 of the upper region of the cantilever arm 26 forming this lies on a correspondingly beveled surface 66 of a support bearing 68 fixed to the frame, the bevel when the swivel arm 26 is pivoted in that the inner contour 64 slides on the beveled surface 66 allowed.
  • the contact between the inner contour 64 and surface 66 is preferably flat.
  • the pivot arm 26 is provided with an extension 70 beyond the pivot axis 22, which is connected at its extension end 72 to the drive end 74 of the piston rod 76 of a first drive cylinder 78, the piston rod 76 and the extension 70 forming the legs of a knee joint 80.
  • the knee joint 80 is stretched; H. the longitudinal axes of the extension 70 and the drive cylinder 78 are aligned with the punching direction 56 and the central perpendicular 62.
  • a gear 82 is arranged, which is non-rotatably coupled to the swivel arm 26.
  • a toothed rack 86 meshes with the toothing 84 and is driven by a second drive cylinder 88.
  • the displacement movement of the rack 86 is suitable, for example, in conjunction with an incrementally operating linear encoder for the exact determination of the position of the swivel arm in the three cycle positions gene, since the entire device should be controlled, for example, via a programmable logic controller.
  • a spray device is designated by 90 which, under pressure, sprays a coolant / lubricant on the downward-facing surface 28 of the punching die 16 in the third cycle position and thus ensures that even the last residues of the waste chips are thoroughly removed from the punching die.
  • the surface of the stamping die 16 faces the feed device 30, from the conveying stamp of which, with the end face 34, the molding 12 is placed flat in the surface 28.
  • the punch die 16 is equipped for a subsequent punching process.
  • the stamp 58 pushes out the molded part 12 'deburred in the previous punching process from the counter-mold 18 and deposits it on the collecting device 46.
  • the counter mold 18 is pressed down against the surface 28 of the punch die 16, the molding 12 being deburred. Since the catch device 46 points obliquely downwards in this cycle position, the molding 12 'previously placed in it reaches the workpiece collector 50. The countermold 18 lifts upwards from the surface 28 of the punching die 16 with the now deburred molding 12 that the punch die 16 is released for pivoting out into the third cycle position.
  • the spray device 90 is activated and, as it were, washes the last chips out of the punch die 16.
  • the device is then moved into the first cycle position, in which, as described above, it is equipped with a new molding and the molding which has already been deburred is placed on the collecting device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Press Drives And Press Lines (AREA)
  • Amplifiers (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
EP85905793A 1984-10-26 1985-10-25 Stanzvorrichtung Expired EP0200775B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85905793T ATE31645T1 (de) 1984-10-26 1985-10-25 Stanzvorrichtung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843439316 DE3439316A1 (de) 1984-10-26 1984-10-26 Stanzvorrichtung
DE3439316 1984-10-26

Publications (2)

Publication Number Publication Date
EP0200775A1 EP0200775A1 (de) 1986-11-12
EP0200775B1 true EP0200775B1 (de) 1988-01-07

Family

ID=6248873

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85905793A Expired EP0200775B1 (de) 1984-10-26 1985-10-25 Stanzvorrichtung

Country Status (7)

Country Link
US (1) US4665785A (enrdf_load_stackoverflow)
EP (1) EP0200775B1 (enrdf_load_stackoverflow)
JP (1) JPS61103659A (enrdf_load_stackoverflow)
AU (1) AU5192486A (enrdf_load_stackoverflow)
DE (1) DE3439316A1 (enrdf_load_stackoverflow)
FR (1) FR2619033B3 (enrdf_load_stackoverflow)
WO (1) WO1986002584A1 (enrdf_load_stackoverflow)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
DE10302751A1 (de) * 2003-01-24 2004-08-05 Bayerische Motoren Werke Ag Verfahren und Vorrichtung zum Entfernen von einem Anguss von einem Gussteil

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EP0371496A1 (en) * 1988-12-01 1990-06-06 Schering Corporation Compositions for transdermal delivery of estradiol
AT400936B (de) * 1991-07-17 1996-04-25 Kristanz Johann Druckguss-maschineneinheit
US6155760A (en) * 1999-05-03 2000-12-05 Cannelli, Jr.; Victor Workpiece receptacle for presses
US6138491A (en) * 1999-06-25 2000-10-31 General Electric Company Apparatus and method for low heat transfer rate chill down during forging
US6223573B1 (en) 1999-06-25 2001-05-01 General Electric Company Method for precision temperature controlled hot forming
US6237454B1 (en) * 1999-06-25 2001-05-29 Honda Of America Mfg., Inc. Self-centering trim punch
US6382064B1 (en) 1999-11-12 2002-05-07 Modern Technologies & Machinery, Inc. Apparatus and method for trimming formed elements
DE10225528A1 (de) * 2002-06-10 2004-01-08 G+K Umformtechnik Gmbh Entgratpresse
ITBS20020093A1 (it) * 2002-10-16 2004-04-17 Meccanica Pi Erre Srl Apparato e metodo per la tranciatura di sfridi da getti in materiali
US7559759B2 (en) * 2004-07-20 2009-07-14 Irwin Research And Development, Inc. Trim press having an article ejector, article ejecting device with linear drive mechanism, and method
KR100588516B1 (ko) 2004-11-30 2006-06-09 현대자동차주식회사 다이 캐스팅 소재 내부 오버 플로우 제거장치
ITBS20050062A1 (it) * 2005-05-27 2006-11-28 Automazioni Ind S R L Dispositivo per la tranciatura di bave
KR100915310B1 (ko) * 2007-12-26 2009-09-03 주식회사 이성엔지니어링 트리밍 프레스의 하판 구조 및 그 회전 방법
CN102133630B (zh) * 2011-03-02 2013-01-09 连云港杰瑞模具技术有限公司 空气锤式压铸溢流边敲边装置
US8777549B2 (en) 2011-06-24 2014-07-15 Honda Motor Co., Ltd. Die rotation system and method
DE202014008037U1 (de) * 2014-10-10 2014-11-03 Tobias Flaig Vorrichtung zum Brikettieren von Materialien
CN105414314B (zh) * 2015-12-25 2017-02-01 东莞市本润机器人科技股份有限公司 一种冲压装置及其冲压方法
JP6342944B2 (ja) * 2016-04-28 2018-06-13 ファナック株式会社 プレス装置
CN105798277A (zh) * 2016-05-16 2016-07-27 上海皮尔博格有色零部件有限公司 铸件缓存台的限位装置
JP6564442B2 (ja) 2017-11-07 2019-08-21 ファナック株式会社 プレス装置
CN112008540B (zh) * 2020-09-09 2022-05-10 泗县东方塑料有限责任公司 一种塑料制品加工生产用修边装置
JP2022101871A (ja) * 2020-12-25 2022-07-07 Ｄｇｓｈａｐｅ株式会社 切削加工機
CN118492152B (zh) * 2024-07-17 2024-09-17 溧阳市力士汽车配件制造有限公司 一种汽车冲压件冲压定位机构

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DE3036338A1 (de) * 1980-09-26 1982-04-22 B+N Maschinenbau GmbH, 4236 Hamminkeln Energieversorgungszug fuer den untertagebetrieb
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10302751A1 (de) * 2003-01-24 2004-08-05 Bayerische Motoren Werke Ag Verfahren und Vorrichtung zum Entfernen von einem Anguss von einem Gussteil
DE10302751B4 (de) * 2003-01-24 2006-01-05 Bayerische Motoren Werke Ag Verfahren und Vorrichtung zum Entfernen von einem Anguss von einem Gussteil

Also Published As

Publication number Publication date
AU5192486A (en) 1986-05-15
US4665785A (en) 1987-05-19
FR2619033B3 (fr) 1989-06-16
EP0200775A1 (de) 1986-11-12
JPH0152104B2 (enrdf_load_stackoverflow) 1989-11-07
WO1986002584A1 (en) 1986-05-09
DE3439316C2 (enrdf_load_stackoverflow) 1993-03-18
DE3439316A1 (de) 1986-04-30
FR2619033A3 (fr) 1989-02-10
JPS61103659A (ja) 1986-05-22

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