WO1995003928A1 - Vorrichtung zur herstellung von formkörpern, und verfahren zur herstellung dieser vorrrichtung - Google Patents
Vorrichtung zur herstellung von formkörpern, und verfahren zur herstellung dieser vorrrichtung Download PDFInfo
- Publication number
- WO1995003928A1 WO1995003928A1 PCT/EP1994/002441 EP9402441W WO9503928A1 WO 1995003928 A1 WO1995003928 A1 WO 1995003928A1 EP 9402441 W EP9402441 W EP 9402441W WO 9503928 A1 WO9503928 A1 WO 9503928A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- heat compensation
- producing
- mold insert
- compensation element
- cavity
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
- B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/76—Cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2017/00—Carriers for sound or information
- B29L2017/001—Carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records
- B29L2017/003—Records or discs
Definitions
- the invention relates to a device for producing moldings, in particular plastic moldings, with a tool body having at least two mold insert elements and temperature control medium spaces, the mold insert elements enclosing the mold cavity, and a method for producing such a device.
- multi-part, usually two-part molds are used in the production of moldings, in particular plastic moldings, which on the one hand enclose the mold cavity and on the other hand have to be separated from one another in order to remove the cured molded body.
- plastic moldings which on the one hand enclose the mold cavity and on the other hand have to be separated from one another in order to remove the cured molded body.
- these must meet certain conditions with regard to their surface properties. This applies in particular to moldings which later serve as data carriers, such as CDs.
- the invention is therefore based on the object of providing a device for producing shaped articles and a method for producing such shaped articles, the productivity of the device or the corresponding production process being able to be increased by shorter cycle times.
- the invention therefore relates to a method of compensating for temperature errors which would occur if the temperature was set very close to the wall of the molded body cavity.
- This compensation of the tempering error takes place via a heat compensation layer, the thermal conductivity of which is considerably higher than that of the mold steel. Due to the high thermal conductivity, the isotherms, which are usually arranged concentrically around a temperature control room, are "blurred". Initial tests have shown that the heat in the heat-emitting layer is dissipated at about seven times the speed. This ensures a homogeneous temperature on the mold cavity wall and ultimately leads to a reduction in cycle times due to the significantly better cooling effect.
- the heat compensation layer consists of copper or copper alloys and power transmission elements.
- the power transmission elements are therefore necessary so that the pressure occurring during the pressing process, which is normally absorbed by the mold steel, can also be absorbed by the "softer" heat compensation layer or passed on to the other side of the heat compensation layer.
- Steel balls can serve as power transmission elements.
- Another teaching of the invention provides that a prefabricated as a heat compensation layer
- Heat compensation element of high thermal conductivity is used.
- the production of a prefabricated heat compensation element is expedient because the direct pouring of liquid copper or a liquid copper alloy into the mold insert element can lead to stresses and defects in the mold insert elements.
- a cavity is thus first created in the mold insert elements, which accommodates the heat compensation element on the one hand and the temperature control medium system on the other hand.
- the heat compensation element and also the element having the temperature control medium spaces are expediently connected to the mold insert element by high-temperature brazing.
- the mold insert element 1 has tempering agent spaces 2 and a wall 3 for delimiting the mold cavity, not shown.
- the wall 3 of the mold insert element 1 is designed as a flat surface. So that the temperature control agent rooms 2 are now relatively close to the wall 3 can be brought up, a heat compensation layer 4 is provided according to the invention between tempering agent rooms 2 and wall 3.
- the heat compensation layer 4 is designed as a prefabricated heat compensation element, which is inserted into a cavity 5 produced in the mold insert element 1 and then connected to the mold insert element 1, preferably by high-temperature hard soldering.
- the heat compensation element is reinforced by incorporated, not shown, power transmission elements.
- both the heat compensation element 4 and the temperature control element 6 are designed as hollow cylindrical disks.
- the invention can also be implemented in devices for producing non-symmetrical moldings.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960700408A KR960703716A (ko) | 1993-07-29 | 1994-07-23 | 금형 제조장치 및 그러한 장치의 제조방법(device for producing moulded bodies and process for producing said device) |
SK129-96A SK12996A3 (en) | 1993-07-29 | 1994-07-23 | Device for producing moulded bodies, in particular plastic moulded bodies, and process for producing said device |
JP7505547A JPH09500838A (ja) | 1993-07-29 | 1994-07-23 | 成型体を形成する装置並びにこの種の装置を製造する方法 |
EP94924283A EP0713444A1 (de) | 1993-07-29 | 1994-07-23 | Vorrichtung zur herstellung von formkörpern, und verfahren zur herstellung dieser vorrichtung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4325481.0 | 1993-07-29 | ||
DE4325481A DE4325481C2 (de) | 1993-07-29 | 1993-07-29 | Vorrichtung zur Herstellung von Formkörpern und Verfahren zur Herstellung einer solchen Vorrichtung |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995003928A1 true WO1995003928A1 (de) | 1995-02-09 |
Family
ID=6494005
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1994/002441 WO1995003928A1 (de) | 1993-07-29 | 1994-07-23 | Vorrichtung zur herstellung von formkörpern, und verfahren zur herstellung dieser vorrrichtung |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0713444A1 (de) |
JP (1) | JPH09500838A (de) |
KR (1) | KR960703716A (de) |
CA (1) | CA2168267A1 (de) |
DE (1) | DE4325481C2 (de) |
SK (1) | SK12996A3 (de) |
WO (1) | WO1995003928A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10151078B4 (de) * | 2000-10-11 | 2004-09-09 | Fachhochschule Jena | Spritzgiesswerkzeug |
DE102006008359B4 (de) * | 2006-02-21 | 2008-06-05 | Direkt Form Gmbh | Temperierbares Werkzeug aus einem gegossenen metallischen Werkstoff zur Formgebung von Werkstücken |
DE102007054723B4 (de) * | 2007-11-14 | 2015-05-28 | Cl Schutzrechtsverwaltungs Gmbh | Formteil |
DE102020118192A1 (de) * | 2020-07-09 | 2022-01-13 | Fox Velution Gmbh | Formwerkzeug zur Herstellung eines Partikelschaumformteils |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB149502A (en) * | 1919-07-07 | 1920-08-19 | John Voorhees Errickson | Improvements in and relating to a method and apparatus for moulding phonograph records and like articles |
DE1904279A1 (de) * | 1969-01-29 | 1970-08-13 | Teldec Telefunken Decca | Schallplattenpressform mit geringer Waermekapazitaet und rueckseitiger Waermeisolierung |
CH507802A (de) * | 1970-02-25 | 1971-05-31 | Synthexa Establishment | Verfahren und Spritzwerkzeug zur Herstellung von Hohlkörpern aus thermoplastischen Kunststoffen |
DE2702623A1 (de) * | 1977-01-17 | 1977-08-04 | Emi Electrola Gmbh | Druckplatte fuer eine schallplattenpresse, einrichtung zur herstellung von schallplatten sowie schallplattenpresse mit einer druckplatte |
EP0146191A1 (de) * | 1983-12-22 | 1985-06-26 | Koninklijke Philips Electronics N.V. | Abwechselnd heiz- und kühlbare Pressform |
EP0261523A2 (de) * | 1986-09-25 | 1988-03-30 | Agfa-Gevaert AG | Verfahren zur Herstellung eines Spritzgiesswerkzeugs |
GB2195943A (en) * | 1986-08-29 | 1988-04-20 | Acushnet Co | Fast thermal response mold |
DE3808363A1 (de) * | 1988-03-12 | 1989-09-21 | Wolff Hans Martin | Kern fuer spritzgiesswerkzeug und verfahren zu seiner herstellung |
DE9201642U1 (de) * | 1992-02-11 | 1992-06-04 | Gebr. Krallmann GmbH, 4901 Hiddenhausen | Spritzgießwerkzeug |
DE4234961A1 (de) * | 1992-10-16 | 1994-04-21 | Klaus Schmetz | Temperierbares Werkzeug bzw. temperierbare Form zur Herstellung von Kunststofformteilen und Verfahren zur Herstellung solcher Werkzeuge bzw. Formen |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB815388A (en) * | 1956-08-01 | 1959-06-24 | Transcription Mfg And Recordin | Improvements in or relating to apparatus for moulding gramophone disc records |
-
1993
- 1993-07-29 DE DE4325481A patent/DE4325481C2/de not_active Expired - Lifetime
-
1994
- 1994-07-23 WO PCT/EP1994/002441 patent/WO1995003928A1/de not_active Application Discontinuation
- 1994-07-23 KR KR1019960700408A patent/KR960703716A/ko not_active Application Discontinuation
- 1994-07-23 CA CA002168267A patent/CA2168267A1/en not_active Abandoned
- 1994-07-23 SK SK129-96A patent/SK12996A3/sk unknown
- 1994-07-23 JP JP7505547A patent/JPH09500838A/ja not_active Ceased
- 1994-07-23 EP EP94924283A patent/EP0713444A1/de not_active Withdrawn
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB149502A (en) * | 1919-07-07 | 1920-08-19 | John Voorhees Errickson | Improvements in and relating to a method and apparatus for moulding phonograph records and like articles |
DE1904279A1 (de) * | 1969-01-29 | 1970-08-13 | Teldec Telefunken Decca | Schallplattenpressform mit geringer Waermekapazitaet und rueckseitiger Waermeisolierung |
CH507802A (de) * | 1970-02-25 | 1971-05-31 | Synthexa Establishment | Verfahren und Spritzwerkzeug zur Herstellung von Hohlkörpern aus thermoplastischen Kunststoffen |
DE2702623A1 (de) * | 1977-01-17 | 1977-08-04 | Emi Electrola Gmbh | Druckplatte fuer eine schallplattenpresse, einrichtung zur herstellung von schallplatten sowie schallplattenpresse mit einer druckplatte |
EP0146191A1 (de) * | 1983-12-22 | 1985-06-26 | Koninklijke Philips Electronics N.V. | Abwechselnd heiz- und kühlbare Pressform |
GB2195943A (en) * | 1986-08-29 | 1988-04-20 | Acushnet Co | Fast thermal response mold |
EP0261523A2 (de) * | 1986-09-25 | 1988-03-30 | Agfa-Gevaert AG | Verfahren zur Herstellung eines Spritzgiesswerkzeugs |
DE3808363A1 (de) * | 1988-03-12 | 1989-09-21 | Wolff Hans Martin | Kern fuer spritzgiesswerkzeug und verfahren zu seiner herstellung |
DE9201642U1 (de) * | 1992-02-11 | 1992-06-04 | Gebr. Krallmann GmbH, 4901 Hiddenhausen | Spritzgießwerkzeug |
DE4234961A1 (de) * | 1992-10-16 | 1994-04-21 | Klaus Schmetz | Temperierbares Werkzeug bzw. temperierbare Form zur Herstellung von Kunststofformteilen und Verfahren zur Herstellung solcher Werkzeuge bzw. Formen |
Also Published As
Publication number | Publication date |
---|---|
EP0713444A1 (de) | 1996-05-29 |
SK12996A3 (en) | 1996-11-06 |
KR960703716A (ko) | 1996-08-31 |
DE4325481C2 (de) | 1996-07-11 |
CA2168267A1 (en) | 1995-02-09 |
DE4325481A1 (de) | 1995-02-02 |
JPH09500838A (ja) | 1997-01-28 |
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