EP2646180B1 - Disque de pression - Google Patents

Disque de pression Download PDF

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Publication number
EP2646180B1
EP2646180B1 EP11790616.4A EP11790616A EP2646180B1 EP 2646180 B1 EP2646180 B1 EP 2646180B1 EP 11790616 A EP11790616 A EP 11790616A EP 2646180 B1 EP2646180 B1 EP 2646180B1
Authority
EP
European Patent Office
Prior art keywords
sealing ring
dummy block
notch
filler
filler piece
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.)
Active
Application number
EP11790616.4A
Other languages
German (de)
English (en)
Other versions
EP2646180A1 (fr
Inventor
Horst Heydasch
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.)
Horst Heydasch Dummy Block & Co KG GmbH
Original Assignee
Horst Heydasch Dummy Block & Co KG 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 Horst Heydasch Dummy Block & Co KG GmbH filed Critical Horst Heydasch Dummy Block & Co KG GmbH
Publication of EP2646180A1 publication Critical patent/EP2646180A1/fr
Application granted granted Critical
Publication of EP2646180B1 publication Critical patent/EP2646180B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/08—Making wire, bars, tubes
    • B21C23/085—Making tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C26/00—Rams or plungers; Discs therefor
    • 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

Definitions

  • the invention relates to a press disk for mounting on the press die of a pressing device, wherein the press disk is formed according to the preamble of claim 1.
  • presses which comprise pressure disks with which pressure can be transmitted to the material to be pressed.
  • the press disks are generally rotationally symmetrical and are located during the pressing process in a transducer which encases them.
  • the press plate is made of a metal such as hot-work steel.
  • the pressing disc is subjected to a strong pressure load and an increase in diameter, which leads to stress on the material. This stress leads to wear of the dummy disk material. Furthermore, in the case of the pressing devices according to the prior art, the problem arises that air contained in the sensor at the beginning of the pressing process can often not completely escape and impairs the material to be pressed.
  • the German patent specification discloses DE 100 36 463 B4 an advantageous pressure plate and a pressing device with such a pressure plate, wherein the pressure plate comprises a filler with a pressing surface with which a force can be exerted on a material to be pressed.
  • the filler is formed on its outer diameter conical with an outer cone surface and surrounded by a likewise belonging to the pressure washer sealing ring, which is designed with its inner diameter so that it forms a gap with its inner cone surface and the outer cone surface of the filler. Further extends between the filler and the sealing ring at least one radial gap which widens conically from the inside out.
  • the German Utility Model DE 73 14 414 U describes a dummy block for press punches of extruders, wherein the dummy block a frontal, the pressed material Having facing circular recess, and further comprising a conical seat for abutment of an inner plate which terminates flush in the applied state with the Pressusionnstirn Formation comprises.
  • these include various components that could for example be made in one piece to reduce the number of components.
  • the sealing ring, the intermediate ring and the Pressusionnkern according to the DE 100 36 463 B4 or the DE 73 14 414 U be made in one piece in one component.
  • the object of the invention is therefore to provide an improved dummy block with efficient ventilation, high wear resistance and thus high durability, which has as few individual parts and the lowest possible height. According to the invention this object is achieved by a dummy block with the features of the independent claim 1.
  • Advantageous developments of the dummy block will become apparent from the dependent claims 2-7.
  • the pressure disk according to the invention is suitable for mounting on the press ram of a pressing device, wherein the pressure disk comprises at least one filling piece with a pressing surface, via which a force can be exerted on a material to be pressed.
  • the filler is formed on its outer diameter conical with an outer cone surface and surrounded by a likewise belonging to the pressure washer sealing ring, which is designed with its inner diameter so that it forms a gap with its inner cone surface and the outer cone surface of the filler. Between the filler and the sealing ring extends at least one radial gap which widens conically from the inside outwards.
  • the pressure washer according to the invention is characterized in that the sealing ring has a circumferential recess which extends from the radial gap between filler and sealing ring in the sealing ring inside.
  • the puncture preferably runs in the axial direction.
  • the sealing ring Due to the circumferential groove, the sealing ring becomes bendable and can expand in a controlled manner to the outside over the entire circumference during the pressing process. Due to the dimensions and arrangement of the recess, the elasticity and thus the degree of spreading of the sealing ring can be adjusted specifically.
  • the sealing ring can be made in one piece, so that the pressing plate consists essentially only of the filler, the sealing ring and any connecting elements, without the advantageous functionality of the conical surfaces and the gap between the two components repealed becomes. This makes it much easier to assemble and disassemble the dummy block.
  • this type of pressure disk a longer service life can also be achieved, wherein the pressure disk has a lower wear and the diameter increase and the subsequent discharge is permanently ensured. Furthermore, the inclusion of air in the pressing volume is prevented, whereby the press quality is improved.
  • a bearing surface is arranged according to the invention between the recess and the inner cone surface on the sealing ring.
  • the inner contour of the groove on its outside may have at least one step, wherein the groove tapers towards its bottom.
  • the puncture has at least one ventilation channel, which establishes a connection between the puncture and the environment.
  • the filler can be connected directly to the sealing ring or mounted by means of at least one connecting element to the sealing ring and secured against axial movement, while the sealing ring is mounted on connecting means on the press ram of a pressing device.
  • the sealing ring may then have means for preventing rotation relative to the ram of a pressing device.
  • the pressure disk can be designed so that a rotation of the sealing ring about the axis of rotation of the pressure disk depending on the direction of rotation a backup of the pressure plate on the press ram of a pressing device against axial movement can be produced or released, whereby the sealing ring and the filler from the side of the pressure plate can be mounted on the punch and dismounted from.
  • Fig. 1 shows an embodiment of a dummy block in a schematic cross section.
  • the pressure plate 10 comprises a filler 20 with a front pressing surface 21, with the pressure on a material to be pressed can be applied.
  • the filler 20 is formed at its outer diameter conical with an outer cone surface 22 and surrounded by a sealing ring 30 which is designed with its inner diameter so that it forms a gap 60 with its inner cone surface 34 and the outer cone surface 22 of the filler 20.
  • Between the filler 20 and the sealing ring 30 further extends at least one radial gap 61 which widens conically from the inside out.
  • a circumferential recess 31 is introduced, which extends from the radial gap 61 into the sealing ring 30 in.
  • the recess 31 extends in the axial direction and thus parallel to the longitudinal axis of the pressure plate 10.
  • the recess 31 may also extend at an angle to the longitudinal axis of the pressure plate 10.
  • the width of the groove 31 depends essentially on the dimensions of the dummy block 10 and the desired elasticity of the sealing ring 30, which have proved to be common for common press discs widths of the order of 4-8 mm, since they are easy to manufacture and the Do not weaken sealing ring 30 too much.
  • the filler 20 can be sufficiently supported on the sealing ring 30 during pressing.
  • wider or narrower punctures are also possible.
  • the recess 31 may also be made so wide that a ring can be inserted into it.
  • the depth of the groove 31 also depends on the dimensions of the pressure plate 10 and the desired elasticity of the sealing ring 30, wherein distances between the pressing surface 21 and the bottom of the groove 31 in the order of 15-70 mm have proved to be appropriate. Again, however, other depths are possible.
  • the recess 31 may be arranged at different positions on the radial gap 61. For example, he may, as in Fig. 1 shown, located directly on the inner taper surface 34 of the sealing ring 30. The inner cone surface 34 thus passes directly into the groove 31.
  • the recess 31 could also be arranged on the outside so that it partially penetrates the inner cone surface 34 of the sealing ring 30.
  • the inner cone surface 34 of the sealing ring 30 would then pass over the gap 61 into the recess 31 already.
  • the recess 31 is arranged further inside the sealing ring 30, so that a bearing surface 33 is provided on the sealing ring 30 between the recess 31 and the inner cone surface 34.
  • the recess 31 then does not directly adjoin the inner cone surface 34, and this embodiment according to the invention is shown in FIG Fig. 2 shown.
  • the width of this support surface 33 is variable, with support surfaces having a width of 3-5 mm have proven to be appropriate.
  • the recess 31 has at least one venting channel 32, which establishes a connection between the recess 31 and the environment.
  • the vent channel 32 shown in phantom
  • FIGS. 1 and 2 closes the vent channel 32 (shown in phantom) at the bottom of the groove 31 and leads first axially and then radially outward. Trapped air can be passed during the pressing process in the gap 61 and thus in the recess 31 and escape to the outside.
  • other courses for one or more ventilation channels can be selected.
  • the puncture 31 is circumferential, as in the section AA in the Fig. 3 is shown.
  • individual interruptions of the puncture would be conceivable, but this could lead to an uneven pressure distribution during the pressing process.
  • small interruptions of the puncture 31 in the context of the invention should be regarded as circumferential.
  • the entire pressure plate 10, consisting at least of the filler 20 and the sealing ring 30, can be connected to the ram of a pressing device, this connection can be made in different ways. In this case, different applications may require different embodiments of the connection, which are adapted to the respective conditions. For example, it may be significant for the design of the dummy block, whether a floating bearing to the adapter of the dummy block must be realized or the connection to the ram is already floating.
  • a connecting element 40 in the form of a bolt, which projects through the filler 20 in the sealing ring 30.
  • a nut 50 in the thread of the connecting bolt 40 can be screwed.
  • the bolt head expands preferably conically outward, so that it uniformly pulls the filler 20 during assembly to the sealing ring 30 and centered.
  • the bolt head also serves as a pressing surface.
  • the filler 20 and the connecting bolt 40 are made in one piece, so that the thus formed filler is screwed directly into the nut 50.
  • the sealing ring 30 can be mounted for example via an internal thread 35 on a press die, not shown, a pressing device or an adapter for this purpose by the sealing ring 30 is screwed onto an associated bolt.
  • a pressing device or an adapter for this purpose by the sealing ring 30 is screwed onto an associated bolt.
  • other types of threaded connections, bayonet connections or other types of connection may be used.
  • the entire pressure plate 10 can be mounted by rotating the sealing ring 30 about the longitudinal axis of the pressure plate 10 to a ram and also disassembled from it.
  • an anti-rotation is realized between the sealing ring 30 and the ram of a pressing device, so that the dummy plate does not accidentally detached from the ram.
  • connecting parts such as screws and pins can be installed radially and / or axially. Attention should be paid However, always that the sealing ring 30 is not weakened too much by the rotation.
  • the retraction force of the ram is transmitted via the thread 35 directly to the sealing ring 30.
  • the connecting element 40 could also project through the sealing ring 30 and be screwed into the press die of the pressing device or an adapter.
  • a connection between the dummy plate 10 and the ram would be realized, in which the retraction force of the ram is indirectly transmitted via the connecting element 40 to the sealing ring 30.
  • various embodiments of such a connecting element are conceivable, wherein the connecting element may be part of the pressing disc or part of the press ram or an adapter on the ram.
  • the sealing ring should preferably spread only limitedly under maximum pressure load and not be loaded in the cone during the return movement of the ram, so that spreading by friction forces on the transducer is prevented.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Devices (AREA)
  • Gasket Seals (AREA)
  • Bolts, Nuts, And Washers (AREA)

Claims (7)

  1. Disque de pression (10) destiné à être monté sur le poinçon d'un dispositif de pressage, le disque de pression (10) comprenant au moins une pièce de remplissage (20) avec une surface de pressage (21) via laquelle une force peut être exercée sur une matière à presser, et la pièce de remplissage (20) étant, sur son diamètre extérieur, réalisée en forme de cône avec une face conique extérieure (22) et étant entourée d'une bague d'étanchéité (30) faisant également partie du disque de pression et conçue, avec son diamètre intérieur, de manière à former une fente (60) avec sa face conique intérieure (34) et la face conique extérieure (22) de la pièce de remplissage (20), et entre la pièce de remplissage (20) et la bague d'étanchéité (30) passant au moins une fente radiale (61) qui va s'élargissant en cône de l'intérieur vers l'extérieur, caractérisé en ce que la bague d'étanchéité (30) présente une gorge périphérique (31) qui s'étend de la fente radiale (61) jusque dans la bague d'étanchéité (30), entre la gorge (31) et la face conique intérieure (34) étant agencée une surface d'appui (33) sur la bague d'étanchéité (30).
  2. Disque de pression selon la revendication 1, caractérisé en ce que la gorge (31) va en direction axiale.
  3. Disque de pression selon l'une des revendications 1 à 2, caractérisé en ce que le contour intérieur de la gorge (31) présente, sur son côté extérieur, au moins un gradin, la gorge (31) se rétrécissant en direction de son fond.
  4. Disque de pression selon l'une des revendications 1 à 3, caractérisé en ce que la gorge (31) comprend au moins un canal de ventilation (32) qui établit une liaison entre la gorge (31) et l'environnement.
  5. Disque de pression selon l'une des revendications 1 à 4, caractérisé en ce que la pièce de remplissage (20) est, par l'intermédiaire d'au moins un élément de liaison (40), montée sur la bague d'étanchéité (30) et est protégée contre un mouvement axial, tandis que la bague d'étanchéité (30) peut, via des moyens de liaison, être montée sur le poinçon d'un dispositif de pressage.
  6. Disque de pression selon l'une des revendications 1 à 5, caractérisé en ce que le disque de pression est réalisé de telle sorte que, par une rotation de la bague d'étanchéité (30) autour de l'axe de rotation du disque de pression (10), selon le sens de rotation, un blocage du disque de pression (10) sur le poinçon d'un dispositif de pressage empêchant un mouvement axial peut être réalisé ou supprimé, de sorte que la bague d'étanchéité (30) et la pièce de remplissage (20) peut être montée sur le poinçon, ou démontée, depuis le côté du disque de pression (10).
  7. Disque de pression selon l'une des revendications 1 à 6, caractérisé en ce que la bague d'étanchéité (30) comporte des moyens pour empêcher une rotation par rapport au poinçon d'un dispositif de pressage.
EP11790616.4A 2010-12-01 2011-11-30 Disque de pression Active EP2646180B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010062258 2010-12-01
DE102011007729A DE102011007729B3 (de) 2010-12-01 2011-04-20 Pressscheibe
PCT/EP2011/071396 WO2012072686A1 (fr) 2010-12-01 2011-11-30 Disque de pression

Publications (2)

Publication Number Publication Date
EP2646180A1 EP2646180A1 (fr) 2013-10-09
EP2646180B1 true EP2646180B1 (fr) 2017-11-15

Family

ID=45872624

Family Applications (2)

Application Number Title Priority Date Filing Date
EP11790964.8A Active EP2646181B1 (fr) 2010-12-01 2011-11-30 Système comprenant un disque de pression et un adaptateur pour le montage sur une presse d'extrusion
EP11790616.4A Active EP2646180B1 (fr) 2010-12-01 2011-11-30 Disque de pression

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP11790964.8A Active EP2646181B1 (fr) 2010-12-01 2011-11-30 Système comprenant un disque de pression et un adaptateur pour le montage sur une presse d'extrusion

Country Status (6)

Country Link
US (1) US9492855B2 (fr)
EP (2) EP2646181B1 (fr)
CA (1) CA2819279C (fr)
DE (2) DE102010064400B4 (fr)
SI (1) SI2646181T1 (fr)
WO (2) WO2012072686A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3108979B1 (fr) 2015-06-24 2017-08-09 Uddeholm Svenska AB Grain de poussée pour une presse d'extrusion
WO2018064771A1 (fr) * 2016-10-06 2018-04-12 Exco Technologies Limited Composition d'acier d'outil pour composant d'appareil de coulée sous pression ou de presse d'extrusion
WO2020102806A1 (fr) * 2018-11-15 2020-05-22 The Regents Of The University Of Michigan Extrusion de matériau métallique à l'aide d'un bloc factice ayant une surface incurvée
CN115283474B (zh) * 2022-10-08 2023-01-24 中北大学 一种高性能板坯均匀正挤压控制成形模具
US12090537B2 (en) * 2022-12-16 2024-09-17 Exco Technologies Limited Dummy block for extrusion press

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7314414U (de) * 1977-07-28 Schloemann-Siemag Ag, 4000 Duesseldorf Preßscheibe für den Preßstempel von Strangpressen, insbesondere von Aluminiumstrangpressen
JPS51122151U (fr) * 1975-03-28 1976-10-04
GB2067944B (en) * 1980-01-26 1983-03-23 Centry Aluminium Co Ltd Extrusion process
JPH0750007Y2 (ja) * 1990-11-06 1995-11-15 日本軽金属株式会社 ダミーブロックの押出ステムへの連結構造
DE4132810C2 (de) * 1991-10-02 1994-02-17 Erbsloeh Julius & August Preßscheibe mit Entlüftungseinrichtung
US5272900A (en) * 1992-09-18 1993-12-28 Exco Technologies, Limited Bayonet style connector for metal extrusion dummy block
US5918498A (en) * 1996-07-18 1999-07-06 Robbins; Paul H. Dummy block construction
DE10036463B4 (de) * 2000-07-25 2005-08-04 Heydasch, Horst Pressscheibe und Pressvorrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2012072688A1 (fr) 2012-06-07
EP2646181A1 (fr) 2013-10-09
WO2012072686A1 (fr) 2012-06-07
SI2646181T1 (sl) 2021-08-31
CA2819279C (fr) 2018-11-13
US20130247640A1 (en) 2013-09-26
DE102010064400B4 (de) 2012-09-20
EP2646180A1 (fr) 2013-10-09
EP2646181B1 (fr) 2021-03-31
US9492855B2 (en) 2016-11-15
DE102011007729B3 (de) 2012-04-12
CA2819279A1 (fr) 2012-06-07
DE102010064400A1 (de) 2012-06-06

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