CN103753850A - Pressure pad device for pressure machinery - Google Patents
Pressure pad device for pressure machinery Download PDFInfo
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- CN103753850A CN103753850A CN201210187238.0A CN201210187238A CN103753850A CN 103753850 A CN103753850 A CN 103753850A CN 201210187238 A CN201210187238 A CN 201210187238A CN 103753850 A CN103753850 A CN 103753850A
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- hydraulic oil
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Abstract
The invention discloses a pressure pad device for pressure machinery. The pressure pad device for pressure machinery comprises an ejection rod supporting plate provided with an ejection rod, an air cylinder provided with a power source, and a hydraulic oil cylinder without a power source, wherein the air cylinder provided with the power source and the hydraulic oil cylinder without the power source are fixedly connected with the ejection rod supporting plate; the rod cavity and the rodless cavity of the hydraulic oil cylinder are connected with an oil tank by an oil tube respectively, and a liquid-filling valve is installed on the oil tube; the rodless cavity of the hydraulic oil cylinder is connected with a boost oil circuit, an overflow valve is installed on the boost oil circuit, and the rod cavity is connected with an unloading oil circuit. After a slide block moves downwards to press the ejection rod, the boost oil circuit of the hydraulic oil cylinder is used for boosting, and cooperated with the air cylinder to achieve requirements on a rated pressure, and the air cylinder does not need to be designed into a multi-stage air cylinder with a large volume, meanwhile, the consumption of an air source is reduced, and then the use cost of users is greatly reduced; after the slide block moves upwards, the unloading loop of the hydraulic oil cylinder is used for performing locking, rapid unloading and slow unloading respectively according to process requirements, thus the ejection rod is static at first, and then rapidly moves upwards, and slowly moves upwards while approaching to an upper dead centre, thus reducing impact and noise.
Description
Technical field
The present invention relates to a kind of press pressure pad device, particularly the pressure pad device of a kind of compact conformation and energy-conservation press.
Background technology
Pressure pad plays limit and inloading part effect while being used for drawing, plays head part effect during stamping-out, and current pressure pad is pneumatic, connects cylinder combine by air accumulator, for reaching specified tonnage, by the cylinder of air cushion, makes multi-stage cylinder, bulky.And in technical process, require pressure pad not with the slide block reset of rising immediately, but reset again after a period of time that lags behind, avoid workpiece deformation, this function is called pressure spot blocking function.For realizing this blocking function, on multi-stage cylinder, need to connect extra locking assembly, further increased volume.General press bench is buried underground below with below earth's surface, needs to arrange darker melt pit.The for example forcing press of 400 tons of left and right, its melt pit is generally more than 5 meters, and melt pit cost is high, to enterprise, brings heavier financial burden.
In addition, the stroke height of pressure pad generally needs adjustable, need install in addition stroke control mechanism additional, and its cost of manufacture is higher.
Summary of the invention
Goal of the invention: the pressure pad device that the object of this invention is to provide a kind of compact conformation and energy-conservation press.
Technical scheme: a kind of pressure pad device of press, comprise the push rod supporting plate that push rod is installed, also comprise cylinder with power source and passive delivery hydraulic jack, both are all fixedly connected with push rod supporting plate, and cylinder is connected with air compressor air storage tank; The rod chamber of hydraulic jack is connected with fuel tank by oil pipe respectively with rodless cavity, and prefill valve is housed on oil pipe; At the rodless cavity of hydraulic jack, be connected with a Pressure Increasing Oil-Line, in this Pressure Increasing Oil-Line, overflow valve be installed, 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.
Described overflow valve also can be replaced by flow speed control valve, operated proportional flow control valve or proportional pressure control valve.
The described valve for flow-control can be operated proportional flow control valve, choke valve, flow speed control valve, overflow throttle valve or flow divider-combiner.
Beneficial effect: pressure pad of the present invention 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, coordinate with cylinder and reach rated pressure requirement, without arranging, cylinder is designed to bulky Multi-stage cylinder, saved manufacturing cost and user the expensive expense of large-scale melt pit has been set, 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 respectively locking, quick relief and slowly off-load according to technological requirement under cylinder coordinates, make push rod first static, then fast uplink, slowly up while approaching required top dead centre, reduce large impact and noise, and can realize the electrodeless adjusting of lift rod stroke.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
The specific embodiment
As shown in the figure, a kind of pressure pad device of press, comprises the push rod supporting plate 2 that push rod 1 is installed, and push rod 1 top is provided with to be mated carries out the compressing slide block of workpiece 9, and slide block 9 is driven and done periodically up, downward movement by toggle.
Also comprise cylinder with power source 3 and passive delivery hydraulic jack 4, cylinder 3 has two, is fixed on the both sides, lower surface of push rod supporting plate 2, and cylinder 3 is connected with air compressor air storage tank by tracheae.
Hydraulic jack 4 is located between two cylinders 3, and its piston rod is fixedly connected with push rod supporting plate 2, and the rod chamber of hydraulic jack 4 is connected with fuel tank 10 by oil pipe respectively with rodless cavity, is serially connected with prefill valve 11 on oil pipe; At the rodless cavity of hydraulic jack 4, be connected with a Pressure Increasing Oil-Line, overflow valve 5 is installed in this Pressure Increasing Oil-Line, rod chamber is connected with an off-load oil circuit, three two electric change valves 6,7 of two-way on this off-load oil circuit, have been installed in parallel, wherein on a solenoid directional control valve 7, being serially connected with 8, two three two electric change valves 6,7 of choke valve also can directly be replaced by a 3-position 4-way solenoid directional control valve.
During concrete action: push rod 1 is in top dead center position, slide block 9 row impellers, now the rodless cavity of hydraulic jack 4 rises to rated pressure in the effect downforce of overflow valve 5, and slide block 9 compresses, shaping workpiece.After slide block 9 has been suppressed, initial uplink, now, the solenoid directional control valve 6,7 of hydraulic jack 4 off-load oil circuits all cuts out, and off-load oil circuit is closed, and hydraulic jack 4 is in blocking, and cylinder 3 cannot promote to move on hydraulic jack 4 and push rod 1, and push rod 1 is static; Slide block 9 continues up, solenoid directional control valve 6,7 is opened, and cylinder 3 promotes hydraulic jack 4 and push rod 1 fast uplink, while approaching push rod 1 top dead centre, solenoid directional control valve 6 cuts out, solenoid directional control valve 7 continues to open, and under choke valve 8 effects, hydraulic jack 4 rod chamber oil extraction speed slow down, 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 pressure pad device for press, 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 are all fixedly connected with push rod supporting plate, and cylinder is connected with air compressor air storage tank; The rod chamber of hydraulic jack is connected with fuel tank by oil pipe respectively with rodless cavity, and prefill valve is housed on oil pipe; At the rodless cavity of hydraulic jack, be connected with a Pressure Increasing Oil-Line, in this Pressure Increasing Oil-Line, overflow valve be installed, 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. the pressure pad device of press as claimed in claim 1, is characterized in that: described overflow valve also can be replaced by flow speed control valve, operated proportional flow control valve or proportional pressure control valve.
3. the pressure pad device of press as claimed in claim 1, is characterized in that: the described valve 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 |
|---|---|---|---|
| CN201210187238.0A CN103753850A (en) | 2012-06-08 | 2012-06-08 | Pressure pad device for pressure machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210187238.0A CN103753850A (en) | 2012-06-08 | 2012-06-08 | Pressure pad device for pressure machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103753850A true CN103753850A (en) | 2014-04-30 |
Family
ID=50521244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210187238.0A Pending CN103753850A (en) | 2012-06-08 | 2012-06-08 | Pressure pad device for pressure machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103753850A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111093838A (en) * | 2017-11-17 | 2020-05-01 | 东丽工程株式会社 | Intermittent coating device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN102310579A (en) * | 2010-07-08 | 2012-01-11 | 南通锻压设备股份有限公司 | Pressure pad device of mechanical press |
-
2012
- 2012-06-08 CN CN201210187238.0A patent/CN103753850A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN102310579A (en) * | 2010-07-08 | 2012-01-11 | 南通锻压设备股份有限公司 | Pressure pad device of mechanical press |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111093838A (en) * | 2017-11-17 | 2020-05-01 | 东丽工程株式会社 | Intermittent coating device |
| CN111093838B (en) * | 2017-11-17 | 2021-12-14 | 东丽工程株式会社 | Intermittent coating device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140430 |