BRPI0703362A2 - cast metal injection piston - Google Patents

cast metal injection piston

Info

Publication number
BRPI0703362A2
BRPI0703362A2 BRPI0703362A BRPI0703362A2 BR PI0703362 A2 BRPI0703362 A2 BR PI0703362A2 BR PI0703362 A BRPI0703362 A BR PI0703362A BR PI0703362 A2 BRPI0703362 A2 BR PI0703362A2
Authority
BR
Brazil
Prior art keywords
middle portion
chamber
piston
metal injection
rings
Prior art date
Application number
Other languages
Portuguese (pt)
Inventor
Wilmar Fischer
Original Assignee
W Fischer Tecnica Ltda
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 W Fischer Tecnica Ltda filed Critical W Fischer Tecnica Ltda
Priority to BRPI0703362 priority Critical patent/BRPI0703362A2/en
Priority to PCT/BR2008/000225 priority patent/WO2009021298A1/en
Publication of BRPI0703362A2 publication Critical patent/BRPI0703362A2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/2015—Means for forcing the molten metal into the die
    • B22D17/203—Injection pistons

Abstract

PISTãO PARA INJEçãO DE METAL FUNDIDO. O pistão para injeção de metal fundido é acoplado a uma haste de acionamento (15), axialmente deslocável no interior de uma câmara de injeção (10) do tipo câmara quente e apresentando uma parede lateral cilíndrica (11) O pistão (20) compreende: uma porção mediana (21) com diâmetro externo substancialmente menor que o diâmetro da câmara (10); duas porções extremas (22,23) fixadas, cada uma, em um respectivo extremo da porção mediana (21) e apresentando diâmetro ligeiramente menor que aquele da câmara (10). Uma das porções extremas (22,23) é acoplada à haste de acionamento (15) e sendo que pelo menos uma delas é fixada, de modo removível, à porção mediana (21) para que anéis de vedação (30) sejam montados em torno da porção mediana (21), sendo ditos anéis dimensionados para serem circunferencial e elasticamente forçados contra a parede lateral cilíndrica (11) da câmara de injeção (10) .Um anel separador flutuante (40) é montado em torno da porção mediana (21), entre cada dois anéis (30) consecutivos.PISTON FOR CAST METAL INJECTION. The molten metal injection piston is coupled to an axially displaceable drive rod (15) within a hot runner type injection chamber (10) and having a cylindrical sidewall (11). The piston (20) comprises: a median portion (21) with an outside diameter substantially smaller than the diameter of the chamber (10); two end portions (22,23) each attached to a respective end of the middle portion (21) and having a diameter slightly smaller than that of the chamber (10). One of the end portions (22,23) is coupled to the drive rod (15) and at least one of them is removably attached to the middle portion (21) so that sealing rings (30) are mounted around of the middle portion (21), said rings being sized to be circumferentially and elastically forced against the cylindrical side wall (11) of the injection chamber (10). A floating separating ring (40) is mounted around the middle portion (21) , between each two consecutive rings (30).

BRPI0703362 2007-08-15 2007-08-15 cast metal injection piston BRPI0703362A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BRPI0703362 BRPI0703362A2 (en) 2007-08-15 2007-08-15 cast metal injection piston
PCT/BR2008/000225 WO2009021298A1 (en) 2007-08-15 2008-07-31 Piston for the injection of molten metal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BRPI0703362 BRPI0703362A2 (en) 2007-08-15 2007-08-15 cast metal injection piston

Publications (1)

Publication Number Publication Date
BRPI0703362A2 true BRPI0703362A2 (en) 2009-03-31

Family

ID=39877960

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0703362 BRPI0703362A2 (en) 2007-08-15 2007-08-15 cast metal injection piston

Country Status (2)

Country Link
BR (1) BRPI0703362A2 (en)
WO (1) WO2009021298A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SI24287A (en) * 2013-02-14 2014-08-29 Hts Ic D.O.O. Piston for cold chamber die casting

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB812536A (en) * 1957-10-11 1959-04-29 Dow Chemical Co Piston assembly
JPS55156662A (en) * 1979-05-25 1980-12-05 Akio Nakano Molten metal pressing machine
JPS56136269A (en) * 1980-03-28 1981-10-24 Akio Nakano Pressure device for molten metal
JPS5768257A (en) * 1980-10-17 1982-04-26 Toyota Motor Corp Injector for die casting
DE19938076A1 (en) * 1999-08-12 2001-02-15 Munderkinger Industrievertretu Plunger piston for a cold chamber die casting machine has an element between a piston head and a piston rod formed so that cooling channels for transporting a cooling medium are formed between the rod and the element
AU2002257612A1 (en) * 2002-03-04 2003-09-16 Allper Ag Sealing ring and piston for a pressure die casting cylinder
DE20309181U1 (en) * 2003-06-13 2004-10-28 Allper Ag Multi-part piston for a cold chamber die casting machine
JP2005349397A (en) * 2004-06-08 2005-12-22 Nissan Motor Co Ltd Plunger tip for die casting
JP4772388B2 (en) * 2004-06-25 2011-09-14 株式会社クボタ Plunger tip for die casting machine

Also Published As

Publication number Publication date
WO2009021298A1 (en) 2009-02-19

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Legal Events

Date Code Title Description
B03A Publication of an application: publication of a patent application or of a certificate of addition of invention
B07A Technical examination (opinion): publication of technical examination (opinion)
B09B Decision: refusal

Free format text: INDEFIRO O PEDIDO DE ACORDO COM O(S) ARTIGO(S) 8O, 13 E 25 DA LPI

B09B Decision: refusal

Free format text: MANTIDO O INDEFERIMENTO UMA VEZ QUE NAO FOI APRESENTADO RECURSO DENTRO DO PRAZO LEGAL.