BRPI0703362A2 - cast metal injection piston - Google Patents
cast metal injection pistonInfo
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Reciprocating Pumps (AREA)
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).
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)
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)
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 |
ATE364464T1 (en) * | 2002-03-04 | 2007-07-15 | Allper Ag | SEALING RING AND PISTON FOR A 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 |
-
2007
- 2007-08-15 BR BRPI0703362 patent/BRPI0703362A2/en not_active Application Discontinuation
-
2008
- 2008-07-31 WO PCT/BR2008/000225 patent/WO2009021298A1/en active Application Filing
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. |