DE556903C - Pressing device for the production of objects from synthetic resin or similar thermo-plastic masses - Google Patents

Pressing device for the production of objects from synthetic resin or similar thermo-plastic masses

Info

Publication number
DE556903C
DE556903C DE1930556903D DE556903DD DE556903C DE 556903 C DE556903 C DE 556903C DE 1930556903 D DE1930556903 D DE 1930556903D DE 556903D D DE556903D D DE 556903DD DE 556903 C DE556903 C DE 556903C
Authority
DE
Germany
Prior art keywords
production
objects
synthetic resin
pressing device
plastic masses
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
DE1930556903D
Other languages
German (de)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of DE556903C publication Critical patent/DE556903C/en
Expired legal-status Critical Current

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
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2909/00—Use of inorganic materials not provided for in groups B29K2803/00 - B29K2807/00, as mould material
    • B29K2909/08—Glass

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Description

Preßvorrichtung zur Herstellung von Gegenständen aus Kunstharz oder ähnlichen wärmeplastischen Massen Zur Herstellung von Gegenständen durch Pressen aus Kunstharz oder ähnlichen plastischen Massen benutzte man bisher Formen aus hochwertigem Stahl.Pressing device for the production of objects made of synthetic resin or Similar thermo-plastic masses For the production of objects by pressing Made of synthetic resin or similar plastic masses, high-quality molds have been used up to now Stole.

Die Anfertigung derartiger Formen ist außerordentlich langwierig und nur durch äußerst geübte Handwerker durch Handarbeit möglich. Die Formen werden im Negativ zumeist aus dem vollen Stück herausgearbeitet, gehärtet und von Hand poliert, wenn das fertiggeformte Stück glatte oder gar glänzende Oberflächen haben soll.The production of such forms is extremely tedious and Only possible through handwork by extremely skilled craftsmen. The forms are In the negative, mostly worked out from the full piece, hardened and by hand polished when the finished piece has smooth or even shiny surfaces target.

Das Härten der Formen, besonders bei komplizierten Teilen, ist schwierig, wenn Maßhaltigkeit verlangt wird. Werden die Formen beim Arbeitsgang selbst erhitzt, so verändert sich häufig die Struktur des -Materials, die Härte läßt nach, so daß sich Eindrücke und Unebenheiten in der Form ergeben.Hardening the molds, especially with complex parts, is difficult when dimensional accuracy is required. If the molds are heated during the process themselves, the structure of the material often changes, the hardness decreases, so that there are impressions and unevenness in the shape.

Beim Pressen von Gegenständen, die aus schleifendem, ätzendem Material zusammengesetzt sind, wird selbst der gehärtete Stahl stark angegriffen, so daß die Genauigkeit der Form bald nachläßt und nach einer gewissen Benutzungsdauer die Anfertigung einer neuen Form erforderlich ist. Hierzu ist genau dieselbe Arbeit-wie zur ersten Form nötig.When pressing objects made of abrasive, corrosive material are composed, even the hardened steel is strongly attacked, so that the accuracy of the form soon wears off and after a certain period of use the Making a new mold is required. This is exactly the same work as necessary for the first form.

Diese Nachteile werden gemäß der Erfindung dadurch vermieden, daß zur Herstellung der Preßform (Matrize) Glas benutzt wird, dieses läßt sich auf ein Positiv des zu pressenden Stückes leicht aufformen, hat eine große Härte, eine vollkommene Dichte und glatte Oberfläche und eine hohe Druckfestigkeit bei geringem Ausdehnungskoeffizienten.These disadvantages are avoided according to the invention in that for the production of the mold (die) glass is used, this can be on a Slightly mold the positive of the piece to be pressed, has a great hardness, a perfect one Dense and smooth surface and high compressive strength with a low coefficient of expansion.

Der herzustellende Körper -wird im Positiv aus einem unverbrennbaren, hitzebeständigen Stoff hergestellt und dieser in Glas abgeformt. Diese so erhaltene Glasform besitzt außerordentliche Härte, hohe Oberflächendichte und erfordert keinerlei Nacharbeit. Sie stellt ein ideales Negativ des zu formenden Körpers dar. Dieses Negativ kann nun z. B. in eine Masse eingebettet werden, deren Druckfestigkeit dem Druck entspricht, der beim Arbeitsgang nötig ist. Auch ohne Bettungsmaterial kann gearbeitet werden, wenn durch entsprechende Vorrichtung Sorge getragen -wird, daß der äußere Druck auf die Glasform gleich dem inneren während des Arbeitsvorganges ist.The body to be produced - is positively made from an incombustible, made of heat-resistant fabric and molded in glass. This so obtained Glass shape has extraordinary hardness, high surface density and does not require any Rework. It represents an ideal negative of the body to be formed. This Negative can now e.g. B. be embedded in a mass, the compressive strength of the Corresponds to the pressure required for the operation. Even without bedding material be worked, if care is taken by the appropriate device that the external pressure on the glass mold is the same as the internal pressure during the working process is.

Eine weitere Möglichkeit besteht darin, daß man nur die eigentlichen formgebenden Flächen der Matrize aus Glas oder ähnlichem Material mit hoher Oberflächendichte herstellt.Another possibility is that you only get the actual Forming surfaces of the die made of glass or similar material with high surface density manufactures.

Es kommt in allen Fällen nur darauf an, den Glaskörper der Form nicht auf Zug und Biegung zu beanspruchen.In all cases, the only thing that matters is not the glass body of the form to stress on tension and bending.

Claims (1)

PATENTANSPRUCH: Preßvorrichtung zur Herstellung von Gegenständen aus Kunstharz und ähnlichen wärmeplastischen Massen, dadurch gekennzeichnet, daß die Matrize, in der die Masse gepreßt wird, aus Glas oder ähnlichem besteht. Claim: Pressing device for the production of objects from synthetic resin and similar thermo-plastic masses, characterized in that the die in which the mass is pressed consists of glass or the like.
DE1930556903D 1930-10-10 1930-10-10 Pressing device for the production of objects from synthetic resin or similar thermo-plastic masses Expired DE556903C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE556903T 1930-10-10

Publications (1)

Publication Number Publication Date
DE556903C true DE556903C (en) 1932-08-16

Family

ID=6564909

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1930556903D Expired DE556903C (en) 1930-10-10 1930-10-10 Pressing device for the production of objects from synthetic resin or similar thermo-plastic masses

Country Status (1)

Country Link
DE (1) DE556903C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2747797A1 (en) * 1977-10-25 1979-04-26 Polygram Gmbh Heatable and coolable press mould - made of high compressive strength glass for thermoplastic video discs and other plate-like information carriers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2747797A1 (en) * 1977-10-25 1979-04-26 Polygram Gmbh Heatable and coolable press mould - made of high compressive strength glass for thermoplastic video discs and other plate-like information carriers

Similar Documents

Publication Publication Date Title
DE556903C (en) Pressing device for the production of objects from synthetic resin or similar thermo-plastic masses
DE569555C (en) Process for molding objects from synthetic resin
DE1504505B2 (en) CASTING FORM FOR MANUFACTURING OPTICAL ELEMENTS, IN PARTICULAR EYE LENSES FROM PLASTICS
DE599895C (en) Process for the production of molded articles from molding compounds
AT167144B (en) Process for the production of two-part or multi-part metal molds
DE832937C (en) Process for the production of foundry hollow cores and foundry form skins
DE636413C (en) Process for the production of compacted wooden objects
DE903316C (en) Process for the production of colored patterned objects, in particular typefaces, from hardenable synthetic resin molding materials in powder form
DE904345C (en) Mold for the production of adhesive glasses from thermoplastics
DE850421C (en) Process for multiplying objects in cold-hardenable plastics
DE556133C (en) Process for shaping plastic ceramic bodies
DE625384C (en) Process for the production of press or casting molds for roof tiles with a roughened surface
DE375211C (en) Process for the production of ceramic or marble-like objects by means of ring-shaped, closed glass molds
DE463735C (en) Process for the production of printing blocks
DE355417C (en) Process for the production of male and female molds by casting
DE453009C (en) Preliminary product for the production of objects, part of which is made of synthetic resin and an abutting part of hard rubber or similar material
AT150729B (en) Process for the production of molds which are used to produce moldings from castable or plastic masses of all kinds.
DE245148C (en)
DE386265C (en) Process for manufacturing diaphragm pressure gauges with protection against excess pressure
DE412345C (en) Process for the production of thin-walled objects from steel by tempering and annealing
DE816125C (en) Method and device for the production of molds, especially press molds
AT60173B (en) Replacement of metal plating, stereotypes, etching and the like.
DE866432C (en) Process for the production of abrasion-resistant and pressure-resistant precision impression bodies
AT236049B (en) Process for the production of decorative material, in particular tiles and cladding panels
DE929649C (en) Tool for pressing bodies of complex shapes from powders