CN201077161Y - Minute-pressure demoulding protection device of hydraulic press - Google Patents
Minute-pressure demoulding protection device of hydraulic press Download PDFInfo
- Publication number
- CN201077161Y CN201077161Y CNU2007201701767U CN200720170176U CN201077161Y CN 201077161 Y CN201077161 Y CN 201077161Y CN U2007201701767 U CNU2007201701767 U CN U2007201701767U CN 200720170176 U CN200720170176 U CN 200720170176U CN 201077161 Y CN201077161 Y CN 201077161Y
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- cylinder
- piston rod
- minute
- hydraulic press
- piston
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- Expired - Fee Related
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Abstract
The utility model discloses a micro-pressure release protection device, which comprises an upper slider, an upper template, two cylinders fixed on the upper slider and the upper template, and a piston and a piston rod arranged inside the cylinder; wherein the upper slider is connected with the bottom of the cylinder; the piston rod is connected with the upper template; the cylinder is positioned in the center of the upper template, and the air inlet pipe of the cylinder is arranged in the bottom of the cylinder; the piston rod is screwed with the upper template. The utility model has the advantages that since the piston rod inside the cylinder can exert micro-pressure on the compact for a period of time, the gas escaping time is prolonged, and the springback of the compact in the process of compact release is decreased; the structure is simple, and the practical value is high.
Description
Technical field
The utility model relates to the demoulding protective device of hydraulic press.
Background technology
On hydraulic press for powder formation; sometimes because the product of compacting is thinner; compacting back product internal stress is big; in the demoulding,, will cause product shortcomings such as crackle to occur if the demoulding is improper; need a kind of demoulding protective device to be used for the exhaust protection demoulding; it is adjustable that it can make the protection knockout press stablize, thereby protect product effectively, improves product percent of pass.
The utility model content
The utility model is to provide a kind of minute-pressure demoulding protective device of hydraulic press for powder formation; during compacting; it can make the air that is entrained in the powder have the long period to overflow from mold cavity, slows down during the demoulding and damages resilience on pressing direction by pressure, improves the qualification rate of product.
The utility model comprises top shoe, cope match-plate pattern, is fixed on the cylinder between top shoe and the cope match-plate pattern, is positioned at the piston and the piston rod of cylinder, and the cylinder bottom of described cylinder connects top shoe, and piston rod connects upper module, and cylinder is positioned at the center of upper module.
The air inlet pipe of described cylinder is positioned at cylinder bottom.
The screw that is connected to of described piston rod and cope match-plate pattern is connected.
By the effect of piston, minute-pressure for some time acts on the pressed compact, thereby has increased the time that gas is overflowed when suppressing, and the resilience of pressed compact is simple in structure in the time of can reducing the pressed compact demoulding in addition, the practical value height.
Description of drawings
Figure is a structural representation of the present utility model.
The specific embodiment
As shown in the figure, 1 is the cylinder base plate, 2 is piston, and 3 is cylinder body, and 4 is cope match-plate pattern, 5 is slide block, 6 is the gas passage in the cylinder base plate, and 7 is piston rod, 8,9 is attachment screw, 10 is gas chamber, cylinder base plate 1 is fixed on the slide block 5, and cylinder body 3 is fixing with cylinder base plate 1 usefulness screw 8, cylinder body 3 gentle cylinder bottom plates 1, constitute gas chamber 10 between the piston 2, piston 2 is arranged in the gas chamber 10, piston 2 piston rod 7 of ining succession, cope match-plate pattern 4 is connected with piston rod 7 usefulness screws 9, in hydraulic press for powder formation, when suppressing downwards, slide block controls by PLC, magnetic valve gets electric, and gas promotes piston 2, piston rod 7 moves downward, and piston rod 7 stretches out, so just realized upper punch slightly pre-stamped in early days to powder, thereby made the air that is entrained in the powder have the long period to overflow from mold cavity; In powder compaction process, along with suppressing resistance gradually greater than gas load on the piston, piston is compressed to top dead-centre, patrix moves down with slide block and suppresses afterwards, after the compacting pressurize finishes, slide block little time, reach magnetic valve on the gas passage 6 by PLC control with signal this moment, magnetic valve is an open type, electric after, this magnetic valve is opened, Compressed Gas enters gas chamber 10 by gas passage 6, gas chamber 10 seals, and gas promotes piston 2 and moves downward, and piston 2 promotes piston rod 7 and moves downward, piston rod 7 is connected with screw 9 with cope match-plate pattern, piston rod 7 will promote the patrix minute-pressure and act on the pressed compact, has slowed down the resilience of hydraulic pressure base on pressing direction, and the demoulding has guaranteed the qualification rate of product then.
Claims (3)
1. a kind of minute-pressure demoulding protective device of hydraulic press; comprise top shoe, cope match-plate pattern, be fixed on the cylinder on top shoe and the cope match-plate pattern; and be positioned at the piston and the piston rod of cylinder; it is characterized in that: the cylinder bottom of described cylinder connects top shoe; piston rod connects cope match-plate pattern, and cylinder is positioned at the center of cope match-plate pattern.
2. a kind of minute-pressure demoulding protective device of hydraulic press according to claim 1, it is characterized in that: the air inlet pipe of described cylinder is positioned at cylinder bottom.
3. a kind of minute-pressure demoulding protective device of hydraulic press according to claim 1, it is characterized in that: the screw that is connected to of described piston rod and cope match-plate pattern is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201701767U CN201077161Y (en) | 2007-08-13 | 2007-08-13 | Minute-pressure demoulding protection device of hydraulic press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201701767U CN201077161Y (en) | 2007-08-13 | 2007-08-13 | Minute-pressure demoulding protection device of hydraulic press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201077161Y true CN201077161Y (en) | 2008-06-25 |
Family
ID=39569217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201701767U Expired - Fee Related CN201077161Y (en) | 2007-08-13 | 2007-08-13 | Minute-pressure demoulding protection device of hydraulic press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201077161Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294483A (en) * | 2011-09-06 | 2011-12-28 | 西北有色金属研究院 | Demoulding method for powder cold-press formed pipe blank |
| CN110189911A (en) * | 2019-07-05 | 2019-08-30 | 浙江宝威电气有限公司 | A kind of multiple groups transformer coil hydraulic press with minute-pressure dullness function |
-
2007
- 2007-08-13 CN CNU2007201701767U patent/CN201077161Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294483A (en) * | 2011-09-06 | 2011-12-28 | 西北有色金属研究院 | Demoulding method for powder cold-press formed pipe blank |
| CN102294483B (en) * | 2011-09-06 | 2012-12-05 | 西北有色金属研究院 | Demoulding method for powder cold-press formed pipe blank |
| CN110189911A (en) * | 2019-07-05 | 2019-08-30 | 浙江宝威电气有限公司 | A kind of multiple groups transformer coil hydraulic press with minute-pressure dullness function |
| CN110189911B (en) * | 2019-07-05 | 2024-05-24 | 浙江宝威电气有限公司 | Multi-group transformer coil hydraulic press with micro-pressure monotone function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080625 Termination date: 20090914 |