CN204451294U - A kind of fully automatic hydraulic essence impact machine high and low pressure translation function optimizes hydraulic system - Google Patents
A kind of fully automatic hydraulic essence impact machine high and low pressure translation function optimizes hydraulic system Download PDFInfo
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- CN204451294U CN204451294U CN201520078096.3U CN201520078096U CN204451294U CN 204451294 U CN204451294 U CN 204451294U CN 201520078096 U CN201520078096 U CN 201520078096U CN 204451294 U CN204451294 U CN 204451294U
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Abstract
The utility model discloses a kind of fully automatic hydraulic essence impact machine high and low pressure translation function and optimize 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 high, medium and low three cover accumulators, also comprises pressure compensator.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, the utility model is 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.
Description
Technical field
The utility model 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 utility model 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.
Utility model content
Technical problem to be solved in the utility model 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 utility model 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 beneficial effects of the utility model are 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, detailed description of the invention of the present utility model is described in further detail.
Fig. 1 is the structural representation of the main haulage gear of the utility model.
Detailed description of the invention
Drawings illustrate structure of the present utility model, 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 utility model, be not intended to limit protection domain of the present utility model.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
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 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, in described 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, in the constant situation of automatically controlled signal, 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.
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520078096.3U CN204451294U (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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520078096.3U CN204451294U (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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| Publication Number | Publication Date |
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| CN204451294U true CN204451294U (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520078096.3U Withdrawn - After Issue CN204451294U (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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| CN (1) | CN204451294U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104647800A (en) * | 2015-02-04 | 2015-05-27 | 中精集团有限公司 | High-and-low-pressure conversion function optimizing hydraulic system for full-automatic hydraulic fine-blanking press |
-
2015
- 2015-02-04 CN CN201520078096.3U patent/CN204451294U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104647800A (en) * | 2015-02-04 | 2015-05-27 | 中精集团有限公司 | High-and-low-pressure conversion function optimizing hydraulic system for full-automatic hydraulic fine-blanking press |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150708 Effective date of abandoning: 20160330 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |