CN104647800A - High-and-low-pressure conversion function optimizing hydraulic system for full-automatic hydraulic fine-blanking press - Google Patents
High-and-low-pressure conversion function optimizing hydraulic system for full-automatic hydraulic fine-blanking press Download PDFInfo
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- CN104647800A CN104647800A CN201510057007.1A CN201510057007A CN104647800A CN 104647800 A CN104647800 A CN 104647800A CN 201510057007 A CN201510057007 A CN 201510057007A CN 104647800 A CN104647800 A CN 104647800A
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- 238000006243 chemical reaction Methods 0.000 title abstract description 4
- 230000008859 change Effects 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 5
- 238000004146 energy storage Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000009977 dual effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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Abstract
The invention discloses a high-and-low-pressure conversion function optimizing hydraulic system for a full-automatic hydraulic fine-blanking press. The system comprises a machine body and a working table surface arranged in the machine body, and is characterized in that a main oil cylinder, a left auxiliary oil cylinder and a right auxiliary oil cylinder are arranged at the bottom of the working table surface; the system further comprises a high energy accumulator, a middle energy accumulator and a low energy accumulator, and further comprises a pressure compensator. In a blanking process, a liquid filling valve is in a closed state, and the pressure compensator is in a working condition state, so that a pressure difference value between an inlet and an outlet of a proportional cartridge valve matched with the pressure compensator can be controlled, and the flow of the proportional cartridge valve of a dual driving valve is in a constant value (under the condition that an electric control signal is not changed) and cannot be changed due to the change of an external load; therefore the main cylinder can move at a constant speed. In the blanking process, the high-and-low-pressure conversion function optimizing hydraulic system can automatically adjust the blanking speed to guarantee the repeated positioning precision of a machine tool, and the requirement of a fine-blanking technology is completely met.
Description
Technical field
The present invention relates to plant equipment automatic control technology field, specifically a kind of improvement invention of guiding mechanism of closed dead point of fine-edge blanking hydraulic press.The invention of hydraulic system is optimized in particular to a kind of fully automatic hydraulic essence impact machine high and low pressure translation function.
Background technology
Fine-edge blanking hydraulic press (hereinafter referred to as smart impact machine) grows up on common stamping machine basis, fine-edge blanking is powerful flanging stamping-out, technological principle is on triple action press, utilize the fine blanking die of special construction, under forceful action, make material produce plasticity, detrusion, thus obtain the fine blanking part of high-quality.A working cycles of essence impact machine, speed change will be realized in little stroke range, simultaneously, velocity variations value is very large, if process bad, is easy to cause hydraulic shock and speed change to lose efficacy, blanking process needs again speed adjustable, so whole hydraulic system must have good rigidity, proportional direction valve and flow speed control valve must have very high response speed.This just has higher requirement to the performance of smart impact machine and die cutting accuracy.
Summary of the invention
Technical problem to be solved by this invention overcomes the deficiencies in the prior art, provides a kind of rational in infrastructure, accurate a kind of full-automatic essence of closed height adjustment to rush hydraulic press closed height adjusting device.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme to realize: this kind of fully automatic hydraulic essence impact machine is high, low pressure translation function optimizes hydraulic system, comprise body and be arranged on the work top on body, it is characterized in that the bottom of described work top is provided with a master cylinder and two, left and right auxiliary cylinder, this system described also comprises height, in, low three cover accumulators, two, described left and right auxiliary cylinder is connected by electrohydraulic proportional directional valve and low pressure accumulator, described master cylinder is connected by two initiatively proportional cartridge valve and high pressure accumulator, during proportional cartridge valve and high-voltage energy-storage, setting difference type pressure compensator is installed, master cylinder and proportional cartridge valve connecting pipe, bypass is connected with superposing type prefill valve, superposing type prefill valve is connected with system surge-tank, control it by the solenoid directional control valve be connected with intermediate-pressure accumulator to open and close, described work top is by carrying out fast, detection, stamping-out and rewind four strokes, described fast travel is realized in operating mode by two, left and right auxiliary cylinder, in Fast Process, prefill valve is in opening, during F.F. operating mode, master cylinder is by prefill valve repairing, during rewind operating mode, master cylinder is by prefill valve oil extraction. and stamping-out stroke drives master cylinder action to realize by two initiatively proportional cartridge valve and high pressure accumulator after connecting, described in blanking process, prefill valve is in closed condition, pressure compensator is in work condition state, the proportional cartridge valve import that can control to coordinate with it is constant with outlet pressure difference, the flow of two aggressive valve proportional cartridge valve is made to be in steady state value, do not change because of the change of extraneous load, thus master cylinder is with constant speed movement.
As preferentially: described fast travel is 200MM per second, described detection stroke is 70MM per second, and described stamping-out stroke is 5-60MM per second, and described rewind stroke is 200MM per second.
The invention has the beneficial effects as follows in the process of stamping-out, can automatically regulate stamping-out speed, thus ensure the repetitive positioning accuracy of lathe, meet the requirement of fine blanking technology completely.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is the structural representation of the main haulage gear of the present invention.
Detailed description of the invention
Drawings illustrate structure of the present invention, further illustrate its details by reference to the accompanying drawings more below.It is high that this kind of full-automatic essence rushes hydraulic press, low pressure translation function optimizes hydraulic system, comprise body and be arranged on the work top on body, the bottom of described work top is provided with a master cylinder 1 and two, left and right auxiliary cylinder 2, this system described also comprises height, in, low three groups of accumulator A, B, C, two, described left and right auxiliary cylinder is connected with low pressure accumulator C by electrohydraulic proportional directional valve 3 (external control type), controlling oil to be connected with intermediate-pressure accumulator. described master cylinder is connected by two initiatively proportional cartridge valve 4 and high pressure accumulator A, during proportional cartridge valve 4 and high-voltage energy-storage, setting difference type pressure compensator is installed, master cylinder and proportional cartridge valve connecting pipe, bypass is connected with superposing type prefill valve 6, superposing type prefill valve 6 is connected with system surge-tank, controlling it by the solenoid directional control valve 5 be connected with intermediate-pressure accumulator B to open and close. described work top is by carrying out fast, detection, stamping-out and rewind four strokes, described fast and detection stroke realized in operating mode by two, left and right auxiliary cylinder, stamping-out stroke drives master cylinder action to realize by two initiatively proportional cartridge valve and high pressure accumulator after connecting, described in blanking process, prefill valve is in closed condition, pressure compensator is in work condition state, the proportional cartridge valve import that can control to coordinate with it is constant with outlet pressure difference, the flow of two aggressive valve proportional cartridge valve is made to be in steady state value (in the constant situation of automatically controlled signal), do not change because of the change of extraneous load, thus master cylinder is with constant speed movement. it is high that this kind of full-automatic essence rushes hydraulic press, low pressure translation function optimizes hydraulic system, described fast travel is 200MM per second, described detection stroke is 70MM per second, described stamping-out stroke is 5-60MM per second, described rewind stroke is 200MM per second.
(when work slide block rises fast, when slide block detects conversion by fast heading, the oblique wave instruction that control system is passed through, make slide block even retardation, highly sensitive electrohydraulic proportional directional valve YAC can in very short stroke, complete and work top is moved up with 200mm/s by auxiliary cylinder, the table top that proceeds with one's work by the smooth transition of auxiliary cylinder to 70mm/s, can not cause hydraulic shock and vibration.When work top enters stamping-out state constantly, magnetic valve 5 obtains electric, the quick closedown of superposing type prefill valve, because the pressure of master cylinder changes along with the change of workload, so the hydraulic oil of high pressure accumulator has to pass through pressure compensator (not shown), ensure that two initiatively proportional cartridge valve 4 inlet outlet pressure differential is constant.Now, a steady state value is only by the flow of two active proportional cartridge valve 4.Can ensure that work top can complete part stamping-out with constant setting speed.After work top arrives top dead-centre pressure release, electro-hydraulic proportion reversing valve and other magnetic valves etc. accept control instruction, under the effect that work top is conducted oneself with dignity at mechanical part, with the downward rapid movement of the speed of 200mm/s.The position of slide block in electric control system moment monitoring table top, when distance bottom dead centre 10mm, control system can pass through oblique wave instruction, and control electrohydraulic proportional directional valve, progressively reduce valve core opening, make work top even retardation, at bottom dead centre, place steadily stops.
In sum, these are only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. a fully automatic hydraulic essence impact machine is high, low pressure translation function optimizes hydraulic system, comprise body and be arranged on the work top on body, it is characterized in that the bottom of described work top is provided with a master cylinder and two, left and right auxiliary cylinder, this system described also comprises height, in, low three cover accumulators, two, described left and right auxiliary cylinder is connected by electrohydraulic proportional directional valve and low pressure accumulator, described master cylinder is connected by two initiatively proportional cartridge valve and high pressure accumulator, during two active proportional cartridge valve and high-voltage energy-storage, setting difference type pressure compensator is installed, master cylinder and proportional cartridge valve connecting pipe, bypass is connected with superposing type prefill valve, superposing type prefill valve is connected with system surge-tank, control it by the solenoid directional control valve be connected with intermediate-pressure accumulator to open and close, described work top is by carrying out fast, detection, stamping-out and rewind four strokes, described fast travel is realized in operating mode by two, left and right auxiliary cylinder, in Fast Process, prefill valve is in opening, during F.F. operating mode, master cylinder is by prefill valve repairing, during rewind operating mode, master cylinder is by prefill valve oil extraction. and stamping-out stroke drives master cylinder action to realize by two initiatively proportional cartridge valve and high pressure accumulator after connecting, described in blanking process, prefill valve is in closed condition, pressure compensator is in work condition state, the proportional cartridge valve import that can control to coordinate with it is constant with outlet pressure difference, the flow of two aggressive valve proportional cartridge valve is made to be in steady state value (in the constant situation of automatically controlled signal), do not change because of the change of extraneous load, thus master cylinder is with constant speed movement.
2. fully automatic hydraulic essence impact machine high and low pressure translation function as claimed in claim 1 optimizes hydraulic system, it is characterized in that described fast travel is 200MM per second, described detection stroke is 70MM per second, described stamping-out stroke is 5-60MM per second, and described rewind stroke is 200MM per second.
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| CN201510057007.1A CN104647800B (en) | 2015-02-04 | 2015-02-04 | A kind of fully automatic hydraulic essence impact machine high and low pressure translation function optimizes hydraulic system |
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| CN201510057007.1A CN104647800B (en) | 2015-02-04 | 2015-02-04 | A kind of fully automatic hydraulic essence impact machine high and low pressure translation function optimizes hydraulic system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298945A (en) * | 2015-11-27 | 2016-02-03 | 南通锻压设备股份有限公司 | Hydraulic system of quick pressing type hydraulic press |
| CN106903284A (en) * | 2017-03-17 | 2017-06-30 | 重庆江东机械有限责任公司 | Response charging device and its control method high of large-scale high speed hydraulic press |
| CN107234201A (en) * | 2017-05-26 | 2017-10-10 | 武汉理工大学 | A kind of controllable heavily loaded forging equipment Hydraulic system and control method of feed speed |
| CN112283181A (en) * | 2020-09-25 | 2021-01-29 | 哈尔滨工业大学 | High-power-density auxiliary boosting hydraulic cylinder for foot type robot |
| WO2023273165A1 (en) * | 2021-06-29 | 2023-01-05 | 盐城市智成机械制造有限公司 | Rapid forming method and forming mechanism for automobile steering wheel sheath |
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2015
- 2015-02-04 CN CN201510057007.1A patent/CN104647800B/en active Active
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| JP2004337868A (en) * | 2003-05-13 | 2004-12-02 | Kawasaki Hydromechanics Corp | Forming method with hydraulic press |
| CN101391491A (en) * | 2008-10-17 | 2009-03-25 | 合肥锻压机床有限公司 | Slow descending device for slider of hydraulic press |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105298945A (en) * | 2015-11-27 | 2016-02-03 | 南通锻压设备股份有限公司 | Hydraulic system of quick pressing type hydraulic press |
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| CN107234201A (en) * | 2017-05-26 | 2017-10-10 | 武汉理工大学 | A kind of controllable heavily loaded forging equipment Hydraulic system and control method of feed speed |
| CN107234201B (en) * | 2017-05-26 | 2019-01-01 | 武汉理工大学 | A kind of heavily loaded forging equipment Hydraulic system and control method that feed speed is controllable |
| CN112283181A (en) * | 2020-09-25 | 2021-01-29 | 哈尔滨工业大学 | High-power-density auxiliary boosting hydraulic cylinder for foot type robot |
| WO2023273165A1 (en) * | 2021-06-29 | 2023-01-05 | 盐城市智成机械制造有限公司 | Rapid forming method and forming mechanism for automobile steering wheel sheath |
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| CN104647800B (en) | 2016-03-30 |
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Denomination of invention: An optimized hydraulic system for high and low pressure conversion function of full-automatic hydraulic fine blanking machine Effective date of registration: 20220119 Granted publication date: 20160330 Pledgee: Wenzhou Financing Guarantee Co.,Ltd. Pledgor: ZHONGJING GROUP Co.,Ltd. Registration number: Y2022990000041 |
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Date of cancellation: 20240102 Granted publication date: 20160330 Pledgee: Wenzhou Financing Guarantee Co.,Ltd. Pledgor: ZHONGJING GROUP Co.,Ltd. Registration number: Y2022990000041 |