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DE1203941B - Process for the transfer molding of articles made of rubber - Google Patents

Process for the transfer molding of articles made of rubber

Info

Publication number
DE1203941B
DE1203941B DEG38264A DEG0038264A DE1203941B DE 1203941 B DE1203941 B DE 1203941B DE G38264 A DEG38264 A DE G38264A DE G0038264 A DEG0038264 A DE G0038264A DE 1203941 B DE1203941 B DE 1203941B
Authority
DE
Germany
Prior art keywords
injection
rubber
transfer molding
articles made
injection molding
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
DEG38264A
Other languages
German (de)
Inventor
Dr Techn Ernst Fuhrmann
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.)
Goetzewerke Friedrich Goetze AG
Original Assignee
Goetzewerke Friedrich Goetze AG
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 Goetzewerke Friedrich Goetze AG filed Critical Goetzewerke Friedrich Goetze AG
Priority to DEG38264A priority Critical patent/DE1203941B/en
Priority to GB3118864A priority patent/GB1033125A/en
Publication of DE1203941B publication Critical patent/DE1203941B/en
Pending 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Description

Verfahren zum Spritzpressen von Gegenständen aus Gummi Die Erfindung bezieht sich auf ein Verfahren zum Spritzpressen von Gegenständen aus Gummi oder einem gleichartigen Werkstoff, z. B. von Wellendichtringen oder Formartikeln, bei dem eine Kautschukmischung oder ein gleichartiger plastischer Werkstoff als Spritzmasse mittels einer Spritzpresse mit Spritzpreßzylinder und -kolben über Spritzkanäle in eine Spritzform gepreßt wird.Method of transfer molding articles from rubber The invention refers to a method of transfer molding articles made of rubber or a similar material, e.g. B. of shaft seals or molded articles which is a rubber mixture or a similar plastic material as an injection molding compound by means of an injection press with injection cylinder and piston via injection channels is pressed into an injection mold.

Bekanntlich erfordert das Spritzpressen mehr Gummimasse als das Verdrängen, da neben der für die zu spritzenden Gegenstände erforderlichen Werkstoffmasse auch noch genügend Masse zum Verdrängen derselben im Spritzzylinder und den Spritzdüsen notwendig ist. It is well known that transfer molding requires more rubber mass than displacement, because in addition to the material mass required for the objects to be sprayed there is still enough mass to displace the same in the injection cylinder and the injection nozzles necessary is.

Der Erfindung liegt die Aufgabe zugrunde, die in den Spritzzylinder einzulegende, auf die zu spritzenden Gegenstände abgestimmte Spritzpreßmasse von der zum Verdrängen notwendigen Masse zu trennen, um größere Gummirückstände zu vermeiden. Gemäß der Erfindung wird für das obengenannte Verfahren vorgeschlagen, daß der am Spritzpreßkolben anliegende Teil der Spritzmasse als ein die Spritzkanäle ausfüllender Stoff minderer Qualität eingelegt wird. The invention is based on the object in the injection cylinder injection molding compound to be inserted and matched to the objects to be injected to separate the mass necessary for displacement in order to avoid larger rubber residues. According to the invention it is proposed for the above method that the on Transfer molding piston adjacent part of the injection molding compound as a filling the injection channels Inferior quality fabric is inserted.

Dadurch wird mit Sicherheit vermieden, daß größere Gummirückstände anfallen, die das Fertigprodukt nur unnötigerweise verteuern. Durch die Verwendung eines Stoffes minderer Qualität als Volumenausgleich im Spritzzylinder kann die Fertigung wirtschaftlicher gestaltet werden. Thereby it is avoided with certainty that larger rubber residues incurred, which only unnecessarily make the finished product more expensive. By using of a substance of inferior quality as volume compensation in the injection cylinder, the Manufacturing can be made more economical.

Claims (1)

Patentanspruch: Verfahren zum Spritzpressen von Gegenständen aus Gummi oder einem gleichartigen Werkstoff, bei dem eine Kautschukmischung oder ein gleichartiger plastischer Werkstoff als Spritzmasse mittels einer Spritzpresse mit Spritzpreßzylinder und -kolben über Spritzkanäle in eine Spritzform gepreßt wird, d a d u r c h g e -kennzeichnet, daß der am Spritzpreßkolben anliegende Teil der Spritzmasse als ein die Spritzkanäle ausfüllender Stoff minderer Qualität eingelegt wird. ~~~~~~~~ In Betracht gezogene Druckschriften: USA.-Patentschriften Nr. 1 978 985, 2 641 023. Claim: Method for injection molding objects from Rubber or a similar material in which a rubber mixture or a similar plastic material as injection molding compound by means of an injection press Injection molding cylinder and piston is pressed into an injection mold via injection channels, d a d u r c h g e - indicates that the part of the Injection compound inserted as a substance of inferior quality that fills the injection channels will. ~~~~~~~~ Publications considered: USA.Patent Specifications No. 1 978 985, 2 641 023.
DEG38264A 1963-07-23 1963-07-23 Process for the transfer molding of articles made of rubber Pending DE1203941B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DEG38264A DE1203941B (en) 1963-07-23 1963-07-23 Process for the transfer molding of articles made of rubber
GB3118864A GB1033125A (en) 1963-07-23 1964-08-04 Injection moulding process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG38264A DE1203941B (en) 1963-07-23 1963-07-23 Process for the transfer molding of articles made of rubber

Publications (1)

Publication Number Publication Date
DE1203941B true DE1203941B (en) 1965-10-28

Family

ID=7125834

Family Applications (1)

Application Number Title Priority Date Filing Date
DEG38264A Pending DE1203941B (en) 1963-07-23 1963-07-23 Process for the transfer molding of articles made of rubber

Country Status (2)

Country Link
DE (1) DE1203941B (en)
GB (1) GB1033125A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3483287A (en) * 1966-04-12 1969-12-09 Goodrich Co B F Transfer molding method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9200127A (en) * 1992-01-23 1993-08-16 Ireneus Johannes Theodorus Mar METHOD FOR PRESSING IN A MOLDING SECTION OF A PLASTIC CURED BY A REACTION, A PILLARED PRESSURE MATERIAL TO BE USED THEREIN AND A HOLDER OF SUCH MATERIALS

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1978985A (en) * 1930-09-11 1934-10-30 Revere Rubber Co Method of making flashless molded articles
US2641023A (en) * 1948-09-03 1953-06-09 Bak Carel Willem Heijne Den Method of producing articles from rubber

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1978985A (en) * 1930-09-11 1934-10-30 Revere Rubber Co Method of making flashless molded articles
US2641023A (en) * 1948-09-03 1953-06-09 Bak Carel Willem Heijne Den Method of producing articles from rubber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3483287A (en) * 1966-04-12 1969-12-09 Goodrich Co B F Transfer molding method

Also Published As

Publication number Publication date
GB1033125A (en) 1966-06-15

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