CN202900815U - Servo hydraulic control system capable of adjusting punching stroke and punching speed of punch automatically - Google Patents
Servo hydraulic control system capable of adjusting punching stroke and punching speed of punch automatically Download PDFInfo
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- CN202900815U CN202900815U CN 201220628064 CN201220628064U CN202900815U CN 202900815 U CN202900815 U CN 202900815U CN 201220628064 CN201220628064 CN 201220628064 CN 201220628064 U CN201220628064 U CN 201220628064U CN 202900815 U CN202900815 U CN 202900815U
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- 238000004080 punching Methods 0.000 title claims abstract description 28
- 239000000945 filler Substances 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 111
- 238000000034 method Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
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Abstract
The utility model discloses a servo hydraulic control system capable of adjusting the punching stroke and the punching speed of a punch automatically. The servo hydraulic control system comprises a punching oil cylinder, a high-pressure oil line, a low-pressure oil line, a return oil line and an electrical control system, wherein the high-pressure oil line is connected with an upper cavity of the oil cylinder, the low-pressure oil line is connected with a lower cavity of the oil cylinder, both the high-pressure oil line and the low-pressure oil line are connected with the return oil line through overflow valves, a servo reversing valve is arranged between the high-pressure oil line and the low-pressure oil line, a control oil opening of the servo reversing valve is connected with the low-pressure oil line, and an oil inlet of the servo reversing valve is connected with the low-pressure oil line through a first one-way valve. The servo hydraulic control system capable of adjusting the punching stroke and the punching speed of the punch automatically is provided with the electrical control system, a grating ruler, the servo reversing valve and a high-pressure reversing valve, the stroke of the punch can be preset in the electrical control system, and when the grating ruler detects that the stroke of the oil cylinder reaches the preset stroke of the punch in the electrical control system, the electrical control system controls the stop position of a piston rod of the oil cylinder by controlling the high-pressure reversing valve and the servo reversing valve.
Description
Technical field
The utility model relates to a kind of hydraulic control system, particularly a kind of hydraulic control system of punch press punching.
Background technique
Traditional dull and stereotyped punch press working procedure is divided into two classes, and a class determines that by the oil cylinder piston throw of lever punching stroke, its working procedure generally are the oil cylinder piston total travels, therefore when it is to the workpiece punching of different-thickness, the punching stroke is non-adjustable, and efficient is lower, and wastes energy.The second situation is to come the feedback operation punching position by position limit switch, its working stroke and speed are manually adjustable, but ratio of precision is the end of than, and larger to oil cylinder upper end cap impulse ratio during traditional dull and stereotyped punch press punching backhaul, long-time use can cause reduce or damage the working life of oil cylinder and pipeline, joint, sebific duct.
Summary of the invention
The technical problems to be solved in the utility model is: provide automatically adjustable servo hydraulic control system of a kind of punch press punching stroke and speed, punching stroke and the speed that can automatically regulate drift.
In order to solve the problems of the technologies described above, the utility model comprises the punching oil cylinder, high-pressure oil passage, low pressure oil way, oil circuit and electric control system, high-pressure oil passage connects the epicoele of oil cylinder, low pressure oil way connects the cavity of resorption of oil cylinder, high-pressure oil passage and low pressure oil way all take back oil circuit by relief valve, be provided with servo reversing valve between described high-pressure oil passage and the low pressure oil way, the control port of servo reversing valve is connected with low pressure oil way, the filler opening of servo reversing valve connects low pressure oil way by the first one-way valve, the oil outlet of servo reversing valve connects high-pressure oil passage, the return opening of servo reversing valve connects oil circuit, high-pressure oil passage is provided with high-pressure reversing valve, high-pressure reversing valve is three position four-way directional control valve, the P of high-pressure reversing valve and A mouth are connected on the high-pressure oil passage, the B mouth connects low pressure oil way, the T mouth takes back oil circuit, oil cylinder is provided with the grating scale that detects the oil cylinder piston throw of lever, grating scale is connected with electric control system, electric control system is used for receiving testing signal and the commutation of control servo reversing valve of grating scale and the valve core opening size of regulating servo reversing valve, and electric control system also is used for the commutation of control high-pressure reversing valve.
For the ease of arranging, the main scale of described grating scale is arranged on the cylinder body of oil cylinder, and the read head of grating scale is fixed on the piston rod of oil cylinder, and the datawire of grating scale is connected with electric control system.
For can be energy-conservation, described low pressure oil way is provided with accumulator, low pressure oil way connects oil circuit by unloading valve, low pressure oil way is provided with the second one-way valve, the contact of the contact of high-pressure reversing valve and low pressure oil way and the filler opening of unloading valve and low pressure oil way is before the second one-way valve, the control port of unloading valve and the contact of low pressure oil way are after the second one-way valve, and accumulator is positioned at after the second one-way valve.
For can throttling, the pipeline that the control port of described servo reversing valve is connected with low pressure oil way be provided with throttle valve.
In order to reduce the oil circuit vibrations, described oil circuit is provided with vibration damper.
The beneficial effects of the utility model are: the utility model is provided with electric control system, grating scale, servo reversing valve and high-pressure reversing valve, can in electric control system, preset punch stroke, when the stroke of grating scale detection oil cylinder reaches the punch stroke that presets in the electric control system, electric control system commutates to control the cylinder piston rod stop position by control high-pressure reversing valve and servo reversing valve, can do suitable adjustment according to different operative workpiece slab-thicknesses and shorten the punching stroke, electric control system can also be controlled by the valve core opening size of control servo reversing valve the flow velocity of hydraulic oil, thereby control punching speed is increased work efficiency.
Description of drawings
Accompanying drawing is fundamental diagram of the present utility model;
Among the figure: 1, high-pressure overflow valve, 2, high-pressure reversing valve, 3, orifice plug, 4, servo reversing valve, 5, one-way valve, 6, vibration damper, 7, accumulator, 8, oil cylinder, 9, pressure alarm, 10, main scale, 11, read head, 12, low pressure relief valve, 13, pressure gauge, 14, one-way valve, 15, the electromagnetism load releasing valve.
Embodiment
A kind of embodiment as shown in Figure 1, it comprises high-pressure overflow valve 1, high-pressure reversing valve 2, orifice plug 3, servo reversing valve 4, one-way valve 5, vibration damper 6, accumulator 7, oil cylinder 8, pressure alarm 9, grating scale, low pressure relief valve 12, pressure gauge 13, one-way valve 14, electromagnetism load releasing valve 15, high-pressure oil passage Ph, low pressure oil way Pl and oil circuit T.Oil circuit T comprises oil circuit T1 and oil circuit T2.
High-pressure oil passage Ph connects oil circuit T1 by high-pressure overflow valve 1, and high-pressure overflow valve 1 provides high-pressure oil passage Ph maximum pressure.High-pressure oil passage Pl connects oil circuit T1 by low pressure relief valve 12.Be provided with vibration damper 6 on the oil circuit T1.High-pressure reversing valve 2 and servo reversing valve 4 are arranged between high-pressure oil passage Ph and the low pressure oil way Pl.
High-pressure reversing valve 2 is three position four-way directional control valve, has oil inlet P, oil return inlet T and two actuator port AB.The P mouth of high-pressure reversing valve 2 connects high-pressure oil passage Ph, and the A mouth of high-pressure reversing valve 2 connects oil cylinder 8 epicoeles, and the B mouth of high-pressure reversing valve 2 connects low pressure oil way Pl, and the T mouth of high-pressure reversing valve 2 connects oil circuit T1.
Low pressure oil way Pl connects oil circuit T2 by unloading electromagnetic valve 15, also be provided with one-way valve 14, pressure gauge 13 and pressure alarm 9 and accumulator 7 on the low pressure oil way Pl, one-way valve 14 is positioned at after the contact of the filler opening of the contact of high-pressure reversing valve 2 and low pressure oil way Pl and unloading electromagnetic valve 15 and low pressure oil way Pl, the contact of the control port of unloading electromagnetic valve 15 and low pressure oil way Pl is positioned at after the one-way valve 14, is used for preventing that low pressure oil way Pl pressure oil from refluxing.Forward and backward described in this patent refer near oil inlet end be before, away from oil inlet end be after.
When high-pressure reversing valve 2 does not commutate and low pressure oil way communicate, share unloading electromagnetic valve 15, commutate to left position and provide high-pressure for cylinder upper cavity oil, commutate to right position cylinder upper cavity oil is communicated with oil circuit T1, orifice plug 3 is connected on servo reversing valve and changes 4 and be used for stablize servo reversing valve 4 in the oil circuit control and commutate steady.
Grating scale is arranged on the oil cylinder 8, and grating scale comprises main scale 10, read head 11 and datawire.Main scale 10 is fixed on the cylinder body of oil cylinder 8, and read head 11 links to each other with the piston rod of oil cylinder 8, and datawire connects electric control system.Grating scale feeds back the working position of oil cylinder 8 constantly.Electric control system is used for receiving the feedback signal of grating scale, and according to above-mentioned SC sigmal control high-pressure reversing valve 2 and servo reversing valve 4.
Working principle:
Oil cylinder 8 is descending: measure first the thickness thickness of slab H of processed flat board, then input electrical system, it is L that system regulates the punching stroke automatically.Supply system high pressure oil and low pressure oil, electrical system control high-pressure reversing valve 2 gets the electric left position of changing to, the high pressure oil of high-pressure oil passage Ph enters the epicoele of oil cylinder 8, servo reversing valve 4 commutates to the next simultaneously, the low pressure oil of low pressure oil way Pl also enters the epicoele of oil cylinder 8 by one-way valve 5, oil cylinder 8 goes downwards to the contact workpiece, pressure raises, one-way valve 5 is closed, the punching of the independent fuel feeding of high-pressure oil passage Ph is dull and stereotyped, and during signal when electric control system receives grating scale meter feedback oil cylinder stroke and reaches L, electric control system control high-pressure reversing valve 2 and servo reversing valve 4 dead electricity are changed to meta, and control high-pressure oil passage Ph fuel cut-off, punching is descending complete.
The punching backhaul: electric control system control high-pressure reversing valve 2 got electric to right position when punching was complete, servo reversing valve 4 gets electric to upper, this moment, the epicoele of oil cylinder 8 led to oil circuit T1, low pressure oil enters into the cavity of resorption of oil cylinder 8, oil cylinder 8 up L are to oil cylinder 8 piston rod job initiation positions, the grating scale transmitted signal, and electric control system control high-pressure reversing valve 2 and servo reversing valve 4 dead electricity are changed to meta, cylinder upper cavity oil stops oil return, and oil cylinder 8 is parked in the job initiation position.Punching backhaul working procedure is complete.
Punching speed is regulated: the spool of electric control system control servo reversing valve 4 is opened size and is controlled the hydraulic fluid flow rate that arrives oil cylinder 8 upper and lower cavities, thereby can change at any time the movement velocity of piston rod.
Claims (5)
1. the automatic adjustable servo hydraulic control system of a punch press punching stroke and speed, comprise the punching oil cylinder, high-pressure oil passage, low pressure oil way, oil circuit and electric control system, high-pressure oil passage connects the epicoele of oil cylinder, low pressure oil way connects the cavity of resorption of oil cylinder, high-pressure oil passage and low pressure oil way all take back oil circuit by relief valve, it is characterized in that: be provided with servo reversing valve between described high-pressure oil passage and the low pressure oil way, the control port of servo reversing valve is connected with low pressure oil way, the filler opening of servo reversing valve connects low pressure oil way by the first one-way valve, the oil outlet of servo reversing valve connects high-pressure oil passage, the return opening of servo reversing valve connects oil circuit, high-pressure oil passage is provided with high-pressure reversing valve, high-pressure reversing valve is three position four-way directional control valve, the P of high-pressure reversing valve and A mouth are connected on the high-pressure oil passage, the B mouth connects low pressure oil way, the T mouth takes back oil circuit, oil cylinder is provided with the grating scale that detects the oil cylinder piston throw of lever, grating scale is connected with electric control system, electric control system is used for receiving testing signal and the commutation of control servo reversing valve of grating scale and the valve core opening size of regulating servo reversing valve, and electric control system also is used for the commutation of control high-pressure reversing valve.
2. servo hydraulic control system according to claim 1, it is characterized in that: the main scale of described grating scale is arranged on the cylinder body of oil cylinder, and the read head of grating scale is fixed on the piston rod of oil cylinder, and the datawire of grating scale is connected with electric control system.
3. servo hydraulic control system according to claim 1 and 2, it is characterized in that: described low pressure oil way is provided with accumulator, low pressure oil way connects oil circuit by unloading valve, low pressure oil way is provided with the second one-way valve, the contact of the contact of high-pressure reversing valve and low pressure oil way and the filler opening of unloading valve and low pressure oil way is before the second one-way valve, the control port of unloading valve and the contact of low pressure oil way are after the second one-way valve, and accumulator is positioned at after the second one-way valve.
4. servo hydraulic control system according to claim 3, it is characterized in that: the pipeline that the control port of described servo reversing valve is connected with low pressure oil way is provided with throttle valve.
5. servo hydraulic control system according to claim 3, it is characterized in that: described oil circuit is provided with vibration damper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220628064 CN202900815U (en) | 2012-11-26 | 2012-11-26 | Servo hydraulic control system capable of adjusting punching stroke and punching speed of punch automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220628064 CN202900815U (en) | 2012-11-26 | 2012-11-26 | Servo hydraulic control system capable of adjusting punching stroke and punching speed of punch automatically |
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| Publication Number | Publication Date |
|---|---|
| CN202900815U true CN202900815U (en) | 2013-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220628064 Expired - Fee Related CN202900815U (en) | 2012-11-26 | 2012-11-26 | Servo hydraulic control system capable of adjusting punching stroke and punching speed of punch automatically |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202900815U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966615A (en) * | 2012-11-26 | 2013-03-13 | 山东法因数控机械股份有限公司 | Servo hydraulic control system with automatically adjustable punching stroke and speed of punch press |
| CN111536108A (en) * | 2020-05-08 | 2020-08-14 | 朱佳琦 | A hydraulic control system with automatic adjustment of punching stroke and speed of punching machine |
-
2012
- 2012-11-26 CN CN 201220628064 patent/CN202900815U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102966615A (en) * | 2012-11-26 | 2013-03-13 | 山东法因数控机械股份有限公司 | Servo hydraulic control system with automatically adjustable punching stroke and speed of punch press |
| CN111536108A (en) * | 2020-05-08 | 2020-08-14 | 朱佳琦 | A hydraulic control system with automatic adjustment of punching stroke and speed of punching machine |
| CN111536108B (en) * | 2020-05-08 | 2021-07-06 | 江苏金沃伺服冲床有限公司 | A hydraulic control system with automatic adjustment of punching stroke and speed of punching machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20151126 |