DE1629681A1 - Device for stamping grooves in records - Google Patents

Device for stamping grooves in records

Info

Publication number
DE1629681A1
DE1629681A1 DE19651629681 DE1629681A DE1629681A1 DE 1629681 A1 DE1629681 A1 DE 1629681A1 DE 19651629681 DE19651629681 DE 19651629681 DE 1629681 A DE1629681 A DE 1629681A DE 1629681 A1 DE1629681 A1 DE 1629681A1
Authority
DE
Germany
Prior art keywords
records
embossing
grooves
electrodes
stamping grooves
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.)
Pending
Application number
DE19651629681
Other languages
German (de)
Inventor
Heinz Borchard
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.)
TELDEC Telefunken Decca Schallplatten GmbH
Original Assignee
TELDEC Telefunken Decca Schallplatten 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 TELDEC Telefunken Decca Schallplatten GmbH filed Critical TELDEC Telefunken Decca Schallplatten GmbH
Publication of DE1629681A1 publication Critical patent/DE1629681A1/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/12Dielectric heating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C59/00Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/02Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D17/00Producing carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records; Producing record discs from master stencils
    • B29D17/002Producing phonograph records
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2017/00Carriers for sound or information
    • B29L2017/001Carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records
    • B29L2017/003Records or discs

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Description

Vorrichtung zum Prägen von Rillen in Schallplatten Die vorliogonde Erfindung bezicht sich auf die Herstollung von Rillen in thermoplastisch vorformbaren Werkstoffen, di. der Schallaufzeichnung dienen; z.B. die die Herstellung von tonmodulierten Schaltplattenrillen oder von Führungarillon in magnetischen Tonträgern. Device for embossing grooves in records The vorliogonde Invention relates to the production of grooves in thermoplastically preformable Materials, di. serve to record sound; e.g. the production of sound modulated Switchboard grooves or guide arillon in magnetic sound carriers.

Die llerstellung von Schallplatten, Schallfo. and Schallpostkarten erfolgt heute im we@entlichen durch Pressen oder Prägen unter hohem Pruck, wobei die zur Verformung der Thcrmopleston notwendigewärme im wesentlichen durch Beheizung der Matrizen zugeführt wird oder auch durch entsprechende- Vorwärmung des Pre#materials. Aucb bei der Prägung von nichtmodulierten Rillen in magnetische Tonträger, wie sie in Diktiergerüten oder Qucb bei der Datenverarbeitung genutzt werden, wird de@ Werkstoff beim Prägen, damit eine plastisch. Verformung eintritt, Wärme zugeführt, Die hierbei zum Einsatz kommenden Formen dienen dann nach dee Prägevorgong gleichzoitig zum Kühlon des verformten Werkstoffe@. Die Beheizung der hierfür im Eins@tz bofindlichon Formen erfolgt in der überwiegenden Mehrzehl mit Dampf, während ein geringer Teil auch mit elektrischer Energie arbeitet. Die Kühlung wird mit Wasser vorgenommen. Uer Nachteil nlldieser Verfaljren liegt darin, daß nicht nur dem zu vorformenden Werkstoff die notwendige Wärme zuge-@ührt wird, sondern auch ie gunze Pre#form bei jeder Pressung einmal aufgeheizt und wieder abgekühlt wird. Die Wärmebilanz steht hierbei in einem sehr unwirtschaftlichen Verhältnis. Auf etwa 10 keal für den Werkstoff kommen bis zu 500 kcal für die Preßform.The production of records, sound fo. and sonic postcards takes place nowadays by pressing or embossing under high pressure, whereby the heat necessary for the deformation of the thermoplastic material is essentially provided by heating is fed to the dies or by preheating the pre # material accordingly. Aucb for the embossing of non-modulated grooves in magnetic sound carriers, like them are used in dictation machines or Qucb for data processing, de @ material when embossing, so that one is plastic. Deformation occurs, heat is added, which in this case The forms used are then used according to the embossing process at the same time Cooling of the deformed material @. The heating of the bofindlichon for this in use Most of the molding is done with steam, while a small part also works with electrical energy. The cooling is done with water. The disadvantage of this process is that it is not just the one to be preformed The necessary heat is supplied to the material, but also the gunze pre # form each time it is pressed, it is heated up and then cooled down again. The heat balance stands here in a very uneconomical relationship. To about 10 keal for the material come up to 500 kcal for the mold.

Gegenst@nd der vorliegenden Erfindung ist eine Vorrichtung zum Prägen von llillon in SchallplattenO Sie besteht aus zwei als Druckflächen einer Presse ausgebildeten und mit mindestens einer Prägematrize verschenen elektroden eines Wocbfrequentgenoratore.The subject matter of the present invention is a device for embossing by llillon in SchallplattenO It consists of two as the pressure surfaces of a press trained and with At least one embossing die gives away electrodes of a Wocbfrequentgenoratore.

Bei Anwendung der Vorrichtung nach der Erfindung bleibt die Wärme, die dem Thermoplasten zugeführt werden muß in wesentlichen auf diesen beschränkt. Durch die Anordnung läßt sich die Pressung oder Prägung des Werkstoffes in einem Arbeltsgang bewerk@telligen, wobei zunächst im dielektrischen Werkstoff im Hochfrequenzfeld die erforderliche Temperatur er zeugt wird und durch Druckbelastung der Elektroden gegéneinander die Verformung erfolgt und nach Abschalten der Hochfrequenzerregung über die gekühlten Elektroden eine Rückkühlung vorgenommen wird.When using the device according to the invention, the heat remains which must be supplied to the thermoplastic is essentially limited to this. The arrangement allows the pressing or embossing of the material in one Arbeltsgang bewerk @ telligen, whereby first in the dielectric material in the high frequency field the required temperature is generated and by pressure loading of the electrodes the deformation takes place against each other and after switching off the high-frequency excitation recooling is carried out via the cooled electrodes.

In der beigefügten Abbildung ist eine Vorrichtung als Au4-führungsbeispiel für die Erfindung d@rgestellt. Auf beiden Elektrodon 1, 2 eines Hochfrequenzgenerators 3 befinden eich Preßnvtrizen 4. Der zu prägende Werkstoff 5, vorzungsweise eine Folienbahn, wird zwischen die Elektroden geleitet und druckbelastet (6). In diesem Zustand oder auch schon vor des Einsetzen des Druckes wird zwischen don Elektroden ein Feld aufgehaut. Der Werkstoff erwär@t sich und wird pla@tisch verfornt Die Elektroden werden vorteilh@ft mit einer Kühlvorrichtung ausgerü@tet, insbesondere mit einer Wasserkühlung; sie entzichen dem verformten Werkstoff nnc doni Pre#@organg die Wärme.In the attached figure is a device as an example of execution for the invention. On both electrodons 1, 2 of a high frequency generator 3 are press molds 4. The material to be embossed 5, preferably one Foil web, is passed between the electrodes and subjected to pressure (6). In this State or even before the onset of pressure is between the electrodes built a field. The material heats up and is plastically deformed The electrodes are advantageously equipped with a cooling device, in particular with a Water cooling; they remove the heat from the deformed material nnc doni Pre # @ organg.

3 Seiten Beschreibung 1 Patentanspruch3 pages description 1 claim

Claims (1)

P a t e n t a n s p r u c h @. Vorrichtung zum Prägen von Rillen in Schallplatten, bestehend aus zwei als Druckflächen einer Presse ausgebildeten und mit mindestens einer prägematrize versehenen Elektroden eines Hochfrequenzgener autors. P a t e n t a n s p r u c h @. Device for embossing grooves in records, consisting of two designed as pressure surfaces of a press and electrodes of a high-frequency generator provided with at least one embossing die author.
DE19651629681 1965-10-23 1965-10-23 Device for stamping grooves in records Pending DE1629681A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET0029652 1965-10-23

Publications (1)

Publication Number Publication Date
DE1629681A1 true DE1629681A1 (en) 1971-01-28

Family

ID=7555047

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19651629681 Pending DE1629681A1 (en) 1965-10-23 1965-10-23 Device for stamping grooves in records

Country Status (1)

Country Link
DE (1) DE1629681A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2527509A1 (en) * 1982-05-26 1983-12-02 Sematra Sa Preheating audio or video disc moulding materials - by intermittent induction to minimise heat losses and temp. differentials
EP0335830A2 (en) * 1988-03-28 1989-10-04 De La Rue Giori S.A. Process and installation for producing a multiple form for the reproduction of line engraved intaglio printing plates

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2527509A1 (en) * 1982-05-26 1983-12-02 Sematra Sa Preheating audio or video disc moulding materials - by intermittent induction to minimise heat losses and temp. differentials
EP0335830A2 (en) * 1988-03-28 1989-10-04 De La Rue Giori S.A. Process and installation for producing a multiple form for the reproduction of line engraved intaglio printing plates
EP0335830A3 (en) * 1988-03-28 1990-07-18 De La Rue Giori S.A. Process and installation for producing a multiple form for the reproduction of line engraved intaglio printing plates

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