EP2181839B1 - Poinçon pour une presse rotative - Google Patents

Poinçon pour une presse rotative Download PDF

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Publication number
EP2181839B1
EP2181839B1 EP09012255.7A EP09012255A EP2181839B1 EP 2181839 B1 EP2181839 B1 EP 2181839B1 EP 09012255 A EP09012255 A EP 09012255A EP 2181839 B1 EP2181839 B1 EP 2181839B1
Authority
EP
European Patent Office
Prior art keywords
punch
head
press
insert
shaft
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.)
Not-in-force
Application number
EP09012255.7A
Other languages
German (de)
English (en)
Other versions
EP2181839A2 (fr
EP2181839A3 (fr
Inventor
Friedrich Meissner
Daniel Malick
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.)
Fette GmbH
Original Assignee
Fette GmbH
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 Fette GmbH filed Critical Fette GmbH
Publication of EP2181839A2 publication Critical patent/EP2181839A2/fr
Publication of EP2181839A3 publication Critical patent/EP2181839A3/fr
Application granted granted Critical
Publication of EP2181839B1 publication Critical patent/EP2181839B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams
    • B30B15/065—Press rams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/08—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space co-operating with moulds carried by a turntable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
    • B30B15/026—Mounting of dies, platens or press rams
    • 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
    • Y10T83/929—Tool or tool with support
    • Y10T83/9411—Cutting couple type
    • Y10T83/9423—Punching tool
    • 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
    • Y10T83/929—Tool or tool with support
    • Y10T83/9457—Joint or connection
    • 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
    • Y10T83/929—Tool or tool with support
    • Y10T83/9457—Joint or connection
    • Y10T83/9473—For rectilinearly reciprocating tool
    • Y10T83/9476—Tool is single element with continuous cutting edge [e.g., punch, etc.]

Definitions

  • the invention relates to a stamp for a rotary press according to claim 1.
  • a rotary press contains a plurality of upper and lower punches, which are guided in suitable guide bores of punch guides and cooperate with bores of a die plate.
  • the individual punches have a shaft and a head at one end, which cooperates with pressure rollers of the press.
  • a punch insert is arranged, which is designed separately and can be connected via suitable fastening means with the shaft. The connection is made with the help of screws or pins.
  • DE 829 48 242 or JP 'A'11347798 It has become known to attach a punch insert with the aid of a clamping screw on the punch shaft.
  • the head and the punch shaft on a through bore through which a threaded rod is passed, which is screwed with its threaded end into an internal thread of the punch insert.
  • the head of the threaded rod is recessed in a recess of the stamp head.
  • the document DE 571 885 C discloses a ram according to the preamble of claim 1.
  • the known stamp constructions have some disadvantages.
  • the removal and installation of the stamp inserts is expensive, especially time consuming.
  • An exchange of the stamp inserts within the rotary press is not possible.
  • the attachment of the stamp inserts is susceptible to interference and exposed to high wear. Problems also arise with regard to centering and alignment of the punch inserts, especially in non-round dies.
  • the invention is therefore an object of the invention to provide a ram for a rotary press, which ensures easy installation and removal of the punch insert and allows cleaning within the press.
  • the pull rod has a clamping head at the end facing away from the stamp head with at least one connecting section.
  • the connecting portion is engageable with a facing recess of the punch insert.
  • clamping means are arranged with which the pull rod in the direction of the punch head can be tensioned.
  • the clamping head has at least one radial projection, which allows in one rotational position of the punch insert relative to the pull rod an introduction of the clamping head into the recess and engages behind the undercut in the recess in another rotational position.
  • the punch insert is connected to the facing end of the drawbar, namely the chuck.
  • the pull rod is actuated to pull the punch insert axially against the punch shaft.
  • the pull rod has a thread on which on the punch head side a clamping nut is screwed, which is supported on a shoulder in the axial through hole.
  • the tension can also be applied by a spring instead of a clamping nut, which biases the pull rod in the direction of the punch head.
  • the inventive compound of a punch insert with the punch shaft allows outwardly only smooth surfaces of the punch shaft and punch insert. This results in a good washability of the entire stamp, since neither stamp shank nor stamp insert on the outside have threads, joints or other unfavorable geometries. Assembly and disassembly of the stamp insert is possible within a very short time, even within the rotary press, even by automatic means.
  • the punches are known to be held during their movement in the rotary press in certain sections of curved sections. These sections can then be manipulated on the punches to install or remove the punch insert.
  • the outer contour of the punch insert near the punch shaft is preferably congruent to the outer contour of the punch shaft, so that no stepped transitions are present.
  • the plant of the punch insert at the facing end of the stamp shank is preferably carried out via plane Surfaces.
  • a friction fit can be obtained via these surfaces, which prevents a relative rotation of the punch insert to the punch shaft.
  • a position pin can be provided which is inserted in the punch shaft and cooperates with a facing hole in the punch insert.
  • stamp head 12 and punch shaft 14 have an axial bore 16.
  • the bore 16 has the punch head 12 end facing a bore portion 18 of larger diameter.
  • the bore 16 receives a pull rod 20 which has a clamping head 22 at the lower end.
  • a nut 24 serves as an abutment for a coil spring 26, located on a Washer 28 is supported.
  • the disc 28 is supported on the facing shoulder of the bore portion 18 from. Below the disc 28, an elastomeric seal 30 is arranged. It is intended to prevent liquid or dust from passing from the stamp head 12 in the direction of the through hole 18.
  • a punch insert 32 is connected by the clamping head 22, which engages in a recess 34 of the punch insert 32, is clamped against the facing end of the shaft 14.
  • a position pin 36 is seated in an axially parallel blind bore of the shaft 14. It cooperates with a hole 38 at the facing end of the punch insert 32.
  • a gasket 40 made of plastic.
  • the peripheral contour of the punch insert 32 near the punch shaft 14 is congruent with that of the punch shaft 14, and the punch shaft 14 and punch insert 32 are abutted against each other via planar surfaces perpendicular to the axis of the punch 10. Therefore, there is no stepped transition to the outside and no gap in which impurities can enter.
  • a pressing tool 42 is integrally formed.
  • the attachment of the punch insert 32 is clear from the FIGS. 3 and 4 out. How out FIG. 4 shows, the chuck 22 diametrically opposed radial lugs 44.
  • the punch insert 32 has in the recess 34 diametrically opposite axially parallel grooves 46. They are adapted to receive the radial lugs 44 when the punch insert is set against the shaft 14 and the chuck 22 into the recess 34 dips. At the end of the grooves 46 transversely to the axis extending shoulders are formed by a free rotation 48, which form an undercut in the recess 34.
  • a hole 50 is formed in the punch insert, which is formed in the radial direction as a slot. In the circumferential direction, it is suitable to receive the position pin 36 fitting.
  • the punch insert 32 is held in a rotational position such that the radial projections 44 are aligned with the grooves 46. Then the punch insert 32 is advanced against the shaft 14 until the position pin 36 abuts against the facing planar surface of the punch insert 32. Subsequently, the punch insert 32 is rotated by about 45 °, whereby the radial lugs 44 or lugs engage behind the shoulders formed by the free rotation. The rotation is carried out until the position pin 36 is above the hole 50. Subsequently, the pull rod 20 is tightened, so that the punch insert according to FIG. 1 is stretched against the shaft 14 of the punch 10. In order to carry out the described assembly, according to arrow F in FIG.
  • FIG. 2 a stamp 10a can be seen, which the stamp 10 in FIG. 1 essentially resembles. He takes a pull rod 20a in a corresponding Through hole, wherein the through hole near the punch head 12 has an extended bore portion 18 a.
  • a clamping nut 52 is screwed onto a thread of the drawbar 20a, so that on the drawbar 20a, a tensile force can be exerted in the direction of the punch head 12 to clamp a punch insert 32a against the punch shaft 14a.
  • the connection of the clamping head 22a with the punch insert 32a can be done in the same way as this FIG. 1 has been described.
  • the clamping nut 52 is axially secured by a locking ring 54 in the bore portion 18 a.
  • FIG. 5 shows the lower end of a shaft 14b of a further not shown pressing ram, to which a punch insert 32b is attached in a manner as described in connection with the FIGS. 1 to 3 has been described. Therefore, this connection will not be discussed in more detail.
  • the peculiarity of the stamp insert 32b after FIG. 5 is that the punch insert 32b has four pressing sections 56. In operation, the pressing portions 56 cooperate with four die holes simultaneously.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Automatic Assembly (AREA)
  • Punching Or Piercing (AREA)

Claims (13)

  1. Poinçon pour une presse rotative, avec une tige de poinçon (14, 14a), qui a une tête de poinçon (12, 12a) dans l'une extrémité, et dans l'autre extrémité des moyens pour le logement d'un insert de poinçon séparé (32, 32a) et avec des moyens de fixation pour la fixation amovible de l'insert de poinçon (32, 32a) dans la tige de poinçon (14, 14a), la tête de poinçon (12, 12a) et la tige de poinçon (14, 14a) ayant un perçage axial (20), le perçage axial logeant une barre de tirage (20, 20a) qui a une partie de liaison dans l'extrémité détournée de la tête de poinçon (12, 12a) qui coopère de façon amovible avec une cavité de l'insert de poinçon (32, 32a) faisant face vers la tige de poinçon (14, 14a) et des moyens de serrage étant arrangés dans le perçage axial (20), par lesquels la barre de tirage (20, 20a) peut être précontrainte vers la direction de la tête de poinçon (12, 12a), caractérisé en ce que la barre de tirage (20, 20a) a un mandrin de serrage (22, 22a) dans l'extrémité détournée de la tête de poinçon (12, 12a), le mandrin de serrage (22, 22a) a une extension radiale qui est plus grande que le rayon du perçage axial (20), la cavité (34, 34a) est munie d' une échancrure, de sorte que dans une première position de rotation de l' insert de poinçon (32, 32a) par rapport à la barre de tirage (20, 20a), le mandrin de serrage (22, 22a) peut être inséré dans la cavité (34, 34a), et dans une deuxième position de rotation l'extension radiale s'engage derrière l'échancrure.
  2. Poinçon selon la revendication 1, caractérisé en ce que la barre de tirage (20, 20a) a un filetage sur lequel est vissé au coté tête de poinçon un écrou de serrage (52), qui est supporté sur une épaule dans le perçage axial (18a).
  3. Poinçon selon la revendication 2, caractérisé en ce que l'écrou (52) est axialement retenu dans le perçage (18a) au moyen d'une bague de blocage (54).
  4. Poinçon selon la revendication 1 ou 2, caractérisé en ce que une partie (18) du perçage près de la tête de poinçon (12) a un diamètre plus grand que le reste du perçage (20), un ressort hélicoïdal, à disque ou en élastomère est logé dans la partie (18) du perçage et est supporté sur une butée de la barre de tirage (20) sur l'extrémité tête de poinçon.
  5. Poinçon selon la revendication 4, caractérisé en ce que le ressort (26) est supporté via un disque (28) sur une épaule de la partie (18) du perçage.
  6. Poinçon selon la revendication 5, caractérisé en ce que un élément d'étanchéité (30) est arrangé entre le disque (28) et l'épaule.
  7. Poinçon selon l'une quelconque des revendications 4 à 6, caractérisé en ce que la butée est formée par un écrou de butée (24) qui est vissé sur un filetage de la barre de tirage (20).
  8. Poinçon selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le mandrin de serrage (22) a deux pattes (44) ou nez radiales opposées, et la cavité (34) a deux rainures (46) de manière parallèle à l'axe à travers desquelles les pattes radiales (44) peuvent être insérées dans la cavité (34), et l'échancrure dans la cavité (34) est formée par des épaules qui sont engagés en prise arrière par les pattes radiales (44).
  9. Poinçon selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le contour extérieur de l'insert de poinçon (32, 32a) est congruent avec le contour extérieur de la tige de poinçon (14, 14a) près de l'extrémité de l' insert de poinçon.
  10. Poinçon selon l'une quelconque des revendications 1 à 9, caractérisé en ce que la tige de poinçon (14, 14a) et l'insert de poinçon (32, 32a) reposent à plat l'une contre l'autre sur des surfaces planes.
  11. Poinçon selon l'une quelconque des revendications 1 à 10, caractérisé en ce que l'extrémité de la tige de poinçon (14, 14a) détournée de la tête de poinçon (12) a un perçage de positionnement excentrique pour le logement d'une goupille de positionnement (36), et l'insert de poinçon (32) a un trou (50) qui loge l'extrémité de la goupille de positionnement qui fait saillie du perçage de la tige de poinçon.
  12. Poinçon selon la revendication 11, caractérisé en ce que le trou (50) est réalisé comme un trou oblong dans la direction radiale.
  13. Poinçon selon l'une quelconque des revendications 1 à 12, caractérisé en ce que l'insert de poinçon (32b) est muni de plusieurs parties de poinçon parallèles (56).
EP09012255.7A 2008-10-28 2009-09-28 Poinçon pour une presse rotative Not-in-force EP2181839B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008053453A DE102008053453B4 (de) 2008-10-28 2008-10-28 Stempel für eine Rundläuferpresse

Publications (3)

Publication Number Publication Date
EP2181839A2 EP2181839A2 (fr) 2010-05-05
EP2181839A3 EP2181839A3 (fr) 2013-02-20
EP2181839B1 true EP2181839B1 (fr) 2018-09-26

Family

ID=41491542

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09012255.7A Not-in-force EP2181839B1 (fr) 2008-10-28 2009-09-28 Poinçon pour une presse rotative

Country Status (3)

Country Link
US (1) US8490529B2 (fr)
EP (1) EP2181839B1 (fr)
DE (1) DE102008053453B4 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW201016360A (en) * 2008-10-27 2010-05-01 Rexon Ind Corp Ltd Quick release device for sawing machine
JP5658980B2 (ja) * 2010-11-17 2015-01-28 株式会社菊水製作所 粉体圧縮成形機の杵
CN102267245A (zh) * 2011-08-12 2011-12-07 成都科盛石油科技有限公司 压力机中压制工件的冲头
DE102016113724B4 (de) 2016-07-26 2019-01-17 Fette Compacting Gmbh Stempel für eine Rundläuferpresse
DE102019112547A1 (de) * 2019-05-14 2020-11-19 Felss Systems Gmbh Bearbeitungseinheit und Bearbeitungsmaschine zur Bearbeitung eines Werkstücks an einer Werkstückwand sowie Verfahren zur Herstellung einer Bearbeitungseinheit der genannten Art

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US458076A (en) * 1891-08-18 Punch
DE571885C (de) * 1930-04-08 1933-03-07 Bisterfeld & Stolting Maschine zum Herstellen von Formstuecken aus Kunstharzen
US3791034A (en) * 1972-03-23 1974-02-12 C Carver Hole punching tool
DE2948242C2 (de) * 1979-11-30 1982-10-28 Sandoz AG, 8500 Nürnberg Stempel für Pressen mit einer Kulissenführung
US4375774A (en) * 1979-12-26 1983-03-08 Wilson Tool Company Adjustable punch head
US4487566A (en) * 1983-07-11 1984-12-11 Barna Alex J Punching tool having interchangeable punches
JPH0342199A (ja) * 1989-07-06 1991-02-22 Toshiba Mach Co Ltd 杵および臼のクランプ装置
US5329835A (en) * 1992-10-07 1994-07-19 Wilson Tool International, Inc. Adjustable length punch set assembly
JP3847412B2 (ja) * 1997-05-02 2006-11-22 株式会社村田製作所 ロータリ式粉体圧縮成形装置
JPH11347798A (ja) * 1998-06-02 1999-12-21 Fujitsu Towa Electron Ltd 成形用金型
DE19854075A1 (de) * 1998-11-24 2000-05-25 Henkel Kgaa Verfahren zur Serienfertigung von Formkörpern mit geringer Härteschwankung
US6276247B1 (en) * 2000-03-03 2001-08-21 Strippit, Inc. Adjustable punch assembly with releasable locking
US6895849B2 (en) * 2002-06-07 2005-05-24 Wilson Tool International, Inc. Stripper plate retention system
DE202005009013U1 (de) * 2005-06-08 2005-08-25 Opitz Gmbh Kennzeichnungsstempel

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Also Published As

Publication number Publication date
DE102008053453B4 (de) 2011-05-26
DE102008053453A1 (de) 2010-05-06
US20100101394A1 (en) 2010-04-29
EP2181839A2 (fr) 2010-05-05
EP2181839A3 (fr) 2013-02-20
US8490529B2 (en) 2013-07-23

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