ATE132781T1 - CASTING UNIT FOR HYDRAULIC DIE CASTING MACHINE WITH A DEVICE FOR REMOVING PRESSURE PEAKS DURING CASTING - Google Patents
CASTING UNIT FOR HYDRAULIC DIE CASTING MACHINE WITH A DEVICE FOR REMOVING PRESSURE PEAKS DURING CASTINGInfo
- Publication number
- ATE132781T1 ATE132781T1 AT91909466T AT91909466T ATE132781T1 AT E132781 T1 ATE132781 T1 AT E132781T1 AT 91909466 T AT91909466 T AT 91909466T AT 91909466 T AT91909466 T AT 91909466T AT E132781 T1 ATE132781 T1 AT E132781T1
- Authority
- AT
- Austria
- Prior art keywords
- piston
- casting
- injection
- unit
- pressure peaks
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The injection unit comprises an injection cylinder (9), a hydraulically-operated injection piston (10), a fluid accumulator (1) for the operation at high speed of the injection piston (10) during the injection stroke and a pressure multiplier (12) for the operation at low speed and high pressure of the piston (10) at the end of the injection stroke of the piston (10). It also comprises an auxiliary cylinder/piston unit (6, 7) interposed between the injection piston (10) and the accumulator (1) to allow the advancement of the piston (7) of said auxiliary unit under the action of the accumulator (1) and the advancement of said injection piston (10) in accordance with that of said auxiliary piston (7). The cross-section of the auxiliary cylinder (6) is greater than the cross-section of the injection cylinder (9).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT02039490A IT1248476B (en) | 1990-05-22 | 1990-05-22 | INJECTION GROUP FOR HYDRAULIC DIE-CASTING MACHINE, EQUIPPED WITH A DEVICE FOR THE ELIMINATION OF INJECTION PRESSURE PEAKS |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE132781T1 true ATE132781T1 (en) | 1996-01-15 |
Family
ID=11166319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT91909466T ATE132781T1 (en) | 1990-05-22 | 1991-05-15 | CASTING UNIT FOR HYDRAULIC DIE CASTING MACHINE WITH A DEVICE FOR REMOVING PRESSURE PEAKS DURING CASTING |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0530244B1 (en) |
CN (1) | CN1056643A (en) |
AT (1) | ATE132781T1 (en) |
DE (1) | DE69116361T2 (en) |
ES (1) | ES2080948T3 (en) |
IT (1) | IT1248476B (en) |
WO (1) | WO1991017850A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101774005B (en) * | 2009-01-12 | 2012-05-30 | 深圳领威科技有限公司 | Oil-electric hybrid cold-chamber die casting machine injection system |
CN101774004B (en) * | 2009-01-12 | 2012-05-23 | 深圳领威科技有限公司 | Oil-electric hybrid hot-chamber die casting machine injection system |
CN101530902B (en) * | 2009-04-16 | 2010-12-08 | 宁海县德科模塑有限公司 | Stable-pressure device of Zinc alloy die casting mold |
CN102451899A (en) * | 2010-10-25 | 2012-05-16 | 上海一达机械有限公司 | Oil pump driving device for pump station of hydraulic system in die casting machine |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2021539B2 (en) * | 1970-05-02 | 1971-04-22 | Wotan Werke Gmbh | DIE CASTING MACHINE WITH MULTIPLIER |
DE3014868A1 (en) * | 1979-06-18 | 1981-01-22 | Buehler Ag Geb | DIE CASTING MACHINE |
DE3123498C1 (en) * | 1981-06-13 | 1983-02-03 | Maschinenfabrik Müller-Weingarten AG, 7987 Weingarten | Device for the accelerated build-up and for the regulation of the squeezing pressure in die-casting machines |
-
1990
- 1990-05-22 IT IT02039490A patent/IT1248476B/en active IP Right Grant
-
1991
- 1991-05-15 DE DE69116361T patent/DE69116361T2/en not_active Expired - Fee Related
- 1991-05-15 ES ES91909466T patent/ES2080948T3/en not_active Expired - Lifetime
- 1991-05-15 AT AT91909466T patent/ATE132781T1/en active
- 1991-05-15 WO PCT/EP1991/000913 patent/WO1991017850A1/en active IP Right Grant
- 1991-05-15 EP EP91909466A patent/EP0530244B1/en not_active Expired - Lifetime
- 1991-05-22 CN CN91103431.5A patent/CN1056643A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
ES2080948T3 (en) | 1996-02-16 |
IT9020394A1 (en) | 1991-11-22 |
DE69116361D1 (en) | 1996-02-22 |
IT9020394A0 (en) | 1990-05-22 |
CN1056643A (en) | 1991-12-04 |
IT1248476B (en) | 1995-01-19 |
EP0530244B1 (en) | 1996-01-10 |
EP0530244A1 (en) | 1993-03-10 |
DE69116361T2 (en) | 1996-05-30 |
WO1991017850A1 (en) | 1991-11-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69102744D1 (en) | Device for force regulation of the hold-down device of a press | |
IT8121187A0 (en) | DEVICE FOR SIGNALING BACKWARDS EXACTLY THE POSITION OF A WORKING PISTON, WHICH CAN BE PRESSED BILATERALLY, IN A HYDRAULIC WORKING CYLINDER. | |
ES8206274A1 (en) | Workpiece ejector system for presses | |
ATE132781T1 (en) | CASTING UNIT FOR HYDRAULIC DIE CASTING MACHINE WITH A DEVICE FOR REMOVING PRESSURE PEAKS DURING CASTING | |
ES456312A1 (en) | Hydraulic press | |
DE3873331D1 (en) | DEVICE FOR THE ELECTROEROSIVON PRODUCTION OF HOLES IN WORKPIECES. | |
DE3781099D1 (en) | DRAWING DEVICE FOR A PRESS. | |
FR2424810A1 (en) | PUNCHING MACHINE ALLOWING QUICK TOOL EXCHANGE | |
GB2016980A (en) | Apparatus for operating hydraulic rams | |
DE3871161D1 (en) | DRAWER IN A PRESS. | |
SU106072A1 (en) | Manual hydraulic press | |
GB2014078A (en) | Punching press | |
ES8306447A1 (en) | Bending machine. | |
FR2414378A1 (en) | Die casting machine - with finishing piston pressure controlled for rapid rise without overshoot | |
IT1115618B (en) | Friction driven press with crank - has overrun of ram after work stroke prevented by mechanical stop | |
FR2318024A1 (en) | Injection moulding machine - with double acting hydraulic actuator for applying extra high mould closure pressure during injection | |
GB1162343A (en) | Forging | |
FR2349419A1 (en) | Portable machine for splitting billets of wood - has hydraulic cylinder with vee shaped head guided in frame and acting against stop | |
JPS561295A (en) | Press working method of press machine and out-of-machine press working device for mechanical press used for this | |
ES8203247A1 (en) | Injection assembly for pressure die-casting machines | |
RU1816556C (en) | Metal-cutting machine | |
JPS57191035A (en) | Control circuit for injection process | |
IT8224970A0 (en) | DIE CASTING MACHINE WITH A MOVABLE PRESS PISTON IN A PRESS CYLINDER WITH HYDRAULIC DAMPING AT THE END OF THE PRESS PISTON STROKE. | |
DE69423636D1 (en) | Hydraulic circuit for hydraulic log splitter | |
SE8403687L (en) | press shop |