CN102310579A - Pressure pad device of mechanical press - Google Patents
Pressure pad device of mechanical press Download PDFInfo
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- CN102310579A CN102310579A CN201010220169XA CN201010220169A CN102310579A CN 102310579 A CN102310579 A CN 102310579A CN 201010220169X A CN201010220169X A CN 201010220169XA CN 201010220169 A CN201010220169 A CN 201010220169A CN 102310579 A CN102310579 A CN 102310579A
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- hydraulic cylinder
- pressure pad
- pad device
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Abstract
The invention relates to a pressure pad device of a mechanical press. The pressure pad device comprises an ejector rod supporting plate on which an ejector rod is arranged; the pressure pad device also comprises a cylinder with a power source and a hydraulic cylinder without a power source, wherein both the cylinder and the hydraulic cylinder are fixedly connected with the ejector rod supporting plate, a rod-holding cavity and a rod-free cavity of the hydraulic cylinder are connected with an oil tank through oil pipes respectively, and a charging valve is connected in series to the oil pipes; and the rod-free cavity of the hydraulic cylinder is connected with a booster oil passage, and the rod-holding cavity of the hydraulic cylinder is connected with an unloading oil passage. The hydraulic cylinder is boosted by the booster oil passage after a sliding block descends to press the ejector rod, and is matched with the cylinder to achieve the rated pressure requirement, so that the cylinder does not need to be designed into a multistage cylinder with huge volume, meanwhile, the consumption of a gas source is reduced, and the use cost of a user is reduced; after the sliding block ascends, the unloading loop of the hydraulic cylinder is respectively locked, quickly unloaded and slowly unloaded according to the process requirements, and the ejector rod is fist static, then quickly ascends and slowly ascends when approaching an upper dead point, so that high impact and noise are reduced.
Description
Technical field
The present invention relates to a kind of punching machine pressure pad device, particularly a kind of compact conformation and energy-conservation punching machine pressure pad device.
Background technology
The pressure pad of punching machine plays flanging and inloading part effect when being used for pull and stretch, play the head part effect during stamping-out, and present pressure pad is pneumatic; Connecting cylinder by air accumulator combines; For reaching specified tonnage, the cylinder of air cushion is made multistage cylinder usually, and is bulky.And in technical process, require pressure pad not rise immediately with slide block and reset, but reset again after a period of time that lags behind, avoid workpiece deformation, this function is called the pressure spot blocking function.For realizing this blocking function, need on the multistage cylinder to connect extra locking assembly, further increased volume.Bury underground below the general press bench with below the face of land, darker melt pit need to be set, the forcing press about 400T for example, its melt pit is generally more than 5 meters, and the melt pit cost is high, brings serious financial burden to enterprise.
In addition, the stroke height of pressure pad generally needs scalable, need install stroke control mechanism in addition additional, and its cost of manufacture is higher.
Summary of the invention
The technical problem that the present invention will solve provides a kind of compact conformation and energy-conservation punching machine pressure pad device.
For solving the problems of the technologies described above; Technical scheme of the present invention is: a kind of punching machine pressure pad device; Comprise the push rod supporting plate that push rod is installed; It is characterized in that: also comprise cylinder with power source and passive delivery hydraulic jack, both all are fixedly connected with the push rod supporting plate, and cylinder is connected with the air compressor air accumulator; The rod chamber of hydraulic jack is connected with fuel tank through oil pipe respectively with rodless cavity, and prefill valve is housed on the oil pipe; Rodless cavity at hydraulic jack is connected with a Pressure Increasing Oil-Line, on this Pressure Increasing Oil-Line overflow valve is installed, and rod chamber is connected with an off-load oil circuit, on this off-load oil circuit the valve that carries out flow-control is installed.
Further, said overflow valve also can be replaced by flow speed control valve, operated proportional flow control valve or proportional pressure control valve.
Further, the said valve that is used for flow-control can be operated proportional flow control valve, choke valve, flow speed control valve, overflow throttle valve or flow divider-combiner.
The invention has the advantages that: this pressure pad is combined by cylinder and passive delivery hydraulic jack; Hydraulic jack carries out supercharging by Pressure Increasing Oil-Line after slide block down is pushed down push rod; Cooperate with cylinder to reach the rated pressure requirement, need not to be provided with cylinder is designed to bulky multistage cylinder, saved the expense that manufacturing cost and user are provided with large-scale melt pit; Reduce consumption of air source simultaneously, thereby significantly reduced customer using cost; After slide block is up; The relief circuit of hydraulic jack is carried out locking, quick relief and slowly off-load respectively according to technological requirement under cylinder cooperates; Make push rod at first static, fast uplink then, slowly up during near the top dead centre of required stroke; Reduce large impact and noise, and can realize the electrodeless adjusting of lift rod stroke.
Description of drawings
Accompanying drawing is a punching machine pressure pad device example structure sketch map of the present invention.
The specific embodiment
Shown in accompanying drawing; Comprise the push rod supporting plate 2 that push rod 1 is installed; Push rod 1 top is provided with and is mated slide block 9 slide blocks 3 that carry out workpiece compression moulding and is driven by toggle and do periodically uply, OK, also comprises cylinder with power source 3, and passive delivery hydraulic jack 4.
During concrete the action: push rod 1 is in top dead center position, slide block 9 row impellers, and this moment, the rodless cavity of hydraulic jack 4 was promoted to rated pressure in the effect downforce of overflow valve 5, and slide block 9 compresses, shaping workpiece.After slide block 9 compacting is accomplished, initial uplink, at this moment, hydraulic jack 4 off-load oil circuits solenoid directional control valve 6,7 all close, the off-load oil circuit is closed, hydraulic jack 4 is in blocking, cylinder 3 can't promote to move on hydraulic jack 4 and the push rod 1, push rod 1 is static; Slide block 9 continues up, and solenoid directional control valve 6,7 is opened, and cylinder 3 promotes hydraulic jack 4 and push rod 1 fast uplink; During near push rod 1 top dead centre, solenoid directional control valve 6 cuts out, and solenoid directional control valve 7 continues to open; Under the effect of choke valve 8, hydraulic jack 4 rod chamber oil extraction speed are slowed down, and push rod 1 is slowly up; Avoid high speed impact and noise, solenoid directional control valve 6,7 all cuts out, and push rod stops at the top dead centre of required stroke.
Claims (3)
1. a punching machine pressure pad device comprises the push rod supporting plate that push rod is installed, and it is characterized in that: also comprise cylinder with power source and passive delivery hydraulic jack, both all are fixedly connected with the push rod supporting plate, and cylinder is connected with the air compressor air accumulator; The rod chamber of hydraulic jack is connected with fuel tank through oil pipe respectively with rodless cavity, and prefill valve is housed on the oil pipe; Rodless cavity at hydraulic jack is connected with a Pressure Increasing Oil-Line, on this Pressure Increasing Oil-Line overflow valve is installed, and rod chamber is connected with an off-load oil circuit, on this off-load oil circuit the valve that carries out flow-control is installed.
2. punching machine pressure pad device according to claim 1 is characterized in that: said overflow valve also can be replaced by flow speed control valve, operated proportional flow control valve or proportional pressure control valve.
3. punching machine pressure pad device according to claim 1 is characterized in that: the said valve that is used for flow-control can be operated proportional flow control valve, choke valve, flow speed control valve, overflow throttle valve or flow divider-combiner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010220169XA CN102310579A (en) | 2010-07-08 | 2010-07-08 | Pressure pad device of mechanical press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010220169XA CN102310579A (en) | 2010-07-08 | 2010-07-08 | Pressure pad device of mechanical press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102310579A true CN102310579A (en) | 2012-01-11 |
Family
ID=45424333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010220169XA Pending CN102310579A (en) | 2010-07-08 | 2010-07-08 | Pressure pad device of mechanical press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102310579A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102744334A (en) * | 2012-07-17 | 2012-10-24 | 沃得重型机床（中国）有限公司 | Ejector rod ejecting device of movable worktable of press |
| CN103753850A (en) * | 2012-06-08 | 2014-04-30 | 镇江市锻压机床厂 | Pressure pad device for pressure machinery |
| CN108339901A (en) * | 2018-02-11 | 2018-07-31 | 扬力集团股份有限公司 | A kind of sliding block backhaul air cushion delays the device and its control method of ejection |
| CN108506254A (en) * | 2018-03-05 | 2018-09-07 | 北京航空航天大学 | It is controllable to coordinate to unload electro-hydraulic actuator |
| CN108555106A (en) * | 2018-06-08 | 2018-09-21 | 中山市新泰五金制品有限公司 | A kind of oleo cushion air cushion |
| CN111531012A (en) * | 2020-04-30 | 2020-08-14 | 大昌汽车部件(苏州)有限公司 | Forming system for piston machining and control method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS645711U (en) * | 1987-06-29 | 1989-01-13 | ||
| US5295383A (en) * | 1991-09-04 | 1994-03-22 | Toyota Jidosha Kabushiki Kaisha | Hydraulic cushioning system for press, having shut-off valve for disconnection of pressure-pin cylinders from power supply upon contact of movable die with workpiece |
| US5361615A (en) * | 1992-04-07 | 1994-11-08 | Toyota Jidosha Kabushiki Kaisha | Apparatus for measuring blank holding force acting on pressure ring of a press |
| JPH081247A (en) * | 1994-06-21 | 1996-01-09 | Toyota Motor Corp | Method and device for adjusting pressure equalizing cushion device |
| US5528918A (en) * | 1993-05-25 | 1996-06-25 | Toyota Jidosha Kabushiki Kaisha | Method and apparatus for adjusting pressure of cushioning pneumatic cylinder on press when cushion platen is at setup position |
| JPH08206898A (en) * | 1995-02-06 | 1996-08-13 | Toyota Motor Corp | Equalizer in press machine |
| US5813275A (en) * | 1994-07-05 | 1998-09-29 | Komatsu Ltd. | Safety circuit for press die cushion |
| US20040187546A1 (en) * | 2003-03-28 | 2004-09-30 | Shigeki Kodani | Die cushion apparatus of press machine and surge pressure reduction method for die cushion apparatus |
| CN201736456U (en) * | 2010-07-08 | 2011-02-09 | 南通锻压设备有限公司 | Pressure pad device of mechanical press |
-
2010
- 2010-07-08 CN CN201010220169XA patent/CN102310579A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS645711U (en) * | 1987-06-29 | 1989-01-13 | ||
| US5295383A (en) * | 1991-09-04 | 1994-03-22 | Toyota Jidosha Kabushiki Kaisha | Hydraulic cushioning system for press, having shut-off valve for disconnection of pressure-pin cylinders from power supply upon contact of movable die with workpiece |
| US5361615A (en) * | 1992-04-07 | 1994-11-08 | Toyota Jidosha Kabushiki Kaisha | Apparatus for measuring blank holding force acting on pressure ring of a press |
| US5528918A (en) * | 1993-05-25 | 1996-06-25 | Toyota Jidosha Kabushiki Kaisha | Method and apparatus for adjusting pressure of cushioning pneumatic cylinder on press when cushion platen is at setup position |
| JPH081247A (en) * | 1994-06-21 | 1996-01-09 | Toyota Motor Corp | Method and device for adjusting pressure equalizing cushion device |
| US5813275A (en) * | 1994-07-05 | 1998-09-29 | Komatsu Ltd. | Safety circuit for press die cushion |
| JPH08206898A (en) * | 1995-02-06 | 1996-08-13 | Toyota Motor Corp | Equalizer in press machine |
| US20040187546A1 (en) * | 2003-03-28 | 2004-09-30 | Shigeki Kodani | Die cushion apparatus of press machine and surge pressure reduction method for die cushion apparatus |
| CN201736456U (en) * | 2010-07-08 | 2011-02-09 | 南通锻压设备有限公司 | Pressure pad device of mechanical press |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753850A (en) * | 2012-06-08 | 2014-04-30 | 镇江市锻压机床厂 | Pressure pad device for pressure machinery |
| CN102744334A (en) * | 2012-07-17 | 2012-10-24 | 沃得重型机床（中国）有限公司 | Ejector rod ejecting device of movable worktable of press |
| CN108339901A (en) * | 2018-02-11 | 2018-07-31 | 扬力集团股份有限公司 | A kind of sliding block backhaul air cushion delays the device and its control method of ejection |
| CN108506254A (en) * | 2018-03-05 | 2018-09-07 | 北京航空航天大学 | It is controllable to coordinate to unload electro-hydraulic actuator |
| CN108506254B (en) * | 2018-03-05 | 2019-12-27 | 北京航空航天大学 | Controllable coordinated unloading electro-hydraulic actuator |
| CN108555106A (en) * | 2018-06-08 | 2018-09-21 | 中山市新泰五金制品有限公司 | A kind of oleo cushion air cushion |
| CN111531012A (en) * | 2020-04-30 | 2020-08-14 | 大昌汽车部件(苏州)有限公司 | Forming system for piston machining and control method thereof |
| CN111531012B (en) * | 2020-04-30 | 2021-08-10 | 大昌汽车部件(苏州)有限公司 | Forming system for piston machining and control method thereof |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120111 |