CN210949318U - Quick return hydraulic system of shearing machine - Google Patents
Quick return hydraulic system of shearing machine Download PDFInfo
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- CN210949318U CN210949318U CN201921532008.7U CN201921532008U CN210949318U CN 210949318 U CN210949318 U CN 210949318U CN 201921532008 U CN201921532008 U CN 201921532008U CN 210949318 U CN210949318 U CN 210949318U
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Abstract
The utility model discloses a quick return hydraulic system of cutter, including first cartridge valve and second pressure cartridge valve, its B mouth of first cartridge valve passes through the oil circuit and links to each other with the pole chamber that has of cutter middle hydro-cylinder, installs flexible line and pressure relay on the aforementioned oil circuit. The utility model discloses set up pressure relay on the oil feed oil circuit of cutter middle shearing hydro-cylinder, be the single cylinder return stroke when shearing the jar return stroke, the return stroke is fast, if appear the unable return stroke of card material hydro-cylinder then realize the three-cylinder return stroke together after giving the signal through pressure relay, solve the problem of the unable return stroke of card material to continue the single cylinder return stroke again after no longer blocking the material, the return stroke is fast.
Description
Technical Field
The utility model relates to a quick return stroke hydraulic system of cutter.
Background
The shearing machine is driven by hydraulic pressure, has reliable safety performance and convenient operation, is suitable for metal recycling processing factories, scrapped automobile disassembly sites and smelting and casting industries, and is used for cold shearing and pressing flanging of profile steel and various metal materials in various shapes and pressing and molding of powdery products, plastics, glass fiber reinforced plastics, insulating materials and rubber. The shears are further divided into different categories: metal shearing machine, combined punching and shearing machine, and bar shearing machine of hydraulic shearing machine. The most common of metal shears are the crocodile type and the gantry type. The existing gantry shearing machine is generally provided with three shearing cylinders, the three cylinders advance simultaneously during shearing to enable the blades to have large shearing force on materials to be sheared, the three cylinders do not need to return oil simultaneously during return stroke of the oil cylinder, but the situation that the return stroke is blocked due to the fact that the materials are clamped between the upper blade and the lower blade when the tool apron is driven by the shearing cylinders to return stroke frequently occurs at present.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the defect that exists among the prior art, provide a quick return stroke hydraulic system of cutter, the return stroke is fast, and has solved the problem of the unable return stroke of card material to no longer block very fast return stroke behind the material, and the oil mass is few.
In order to achieve the purpose, the technical scheme of the utility model is to design a quick return hydraulic system of shearing machine, including first cartridge valve and second pressure cartridge valve, its B mouth of first cartridge valve links to each other through the pole chamber of oil circuit and shearing machine middle cylinder, install flexible pipeline and pressure relay on the aforesaid oil circuit, its A mouth of first cartridge valve links to each other with the oil pump through the oil feed oil circuit, its X mouth of first cartridge valve links to each other with the P mouth of first two-position four-way reversing valve, the A mouth of first two-position four-way reversing valve links to each other with the A mouth of first shuttle valve, the P1 mouth of first shuttle valve links to each other with its B mouth of first cartridge valve through the pilot control oil circuit, the P2 mouth of first shuttle valve links to each other with its A mouth of first cartridge valve through the pilot control oil circuit; the rod cavities of the cylinders on the left side and the right side of the middle cylinder of the shearing machine are connected with the ports B of the three-position four-way reversing valve with the U-shaped middle function through oil paths, the ports B of the three-position four-way reversing valve are connected with the rod cavity of the middle cylinder of the shearing machine through branch oil paths, the port A of the three-position four-way reversing valve is connected with the oil tank, the rodless cavities of the three cylinders of the shearing machine are connected with the port A of the second pressure cartridge valve through the oil paths, one of the two oil ports on the side part of the second pressure cartridge valve is connected with the oil tank, the other of the two oil ports is connected with the port X of the second pressure cartridge valve through a third overflow valve, and the port X of the second pressure cartridge valve is also connected. The first cartridge valve is used as a cartridge valve for the return stroke of a shearing cylinder of the shearing machine; the second cartridge valve is used as the cartridge valve when the shearing cylinder of the shearing machine advances; the device is characterized in that the device is a single-cylinder return stroke when the device is arranged, and the oil cylinders on the left side and the right side are provided with rod cavities which are directly communicated with an oil tank to release air, so that the return stroke speed is high, the oil consumption is low, the oil circuit pressure rises when the return stroke is blocked due to the fact that materials sheared in the early stage are clamped between the upper blade and the lower blade, when the pressure rises to a set value, the pressure relay sends a signal to enable the three-position four-way reversing valve to be powered on, the condition that the three cylinders return stroke simultaneously is formed to solve the problem that the return stroke is blocked by the blocked materials, when the blocked materials are separated from the upper blade or the lower blade or the upper blade and the lower blade (not connected to the blades), the oil circuit pressure is reduced, the device returns to the condition of. The flexible pipeline is used for connection, so that the following advantages are achieved: (1) when the flexible pipeline is connected, the damage of vibration generated when the equipment runs and the pipeline is used to the pipeline interface can be effectively reduced; (2) the flexible pipeline is convenient to maintain.
The oil inlet of a third overflow valve is connected with an X port of the second pressure cartridge valve, and the oil outlet of the third overflow valve is connected with an oil port on the side part of the second pressure cartridge valve; and a port P of the fourth two-position four-way reversing valve is connected with an oil port on the side part of the second pressure cartridge valve. The port P of the fourth two-position four-way reversing valve is connected with the oil port on the side part of the second pressure cartridge valve (namely the side oil port connected with the overflow valve) (which is equivalent to the connection between the port P of the fourth two-position four-way reversing valve and the oil outlet of the third overflow valve).
The further technical scheme is that rodless cavities of three oil cylinders of the shearing machine are connected with a port B of a second cartridge valve through a branch oil path, a port A of the second cartridge valve is connected with an oil inlet path, a port X of the second cartridge valve is connected with a port A of a second shuttle valve, a port P1 of the second shuttle valve is connected with a port B of the second cartridge valve, a port P2 of the second shuttle valve is connected with a port P of a second two-position four-way reversing valve, a port A of the second two-position four-way reversing valve is connected with a port A of the second cartridge valve, and a port B of the second cartridge valve is connected with an oil tank.
The further technical scheme is that a port B of the first cartridge valve is connected with a port A of the first pressure cartridge valve through a branch oil path, two oil ports on the side part of the second pressure cartridge valve are respectively a left oil port and a right oil port, the right oil port is connected with an oil tank, the left oil port is connected with a port X of the second pressure cartridge valve through a third overflow valve, the side part of the first pressure cartridge valve is also provided with the left oil port and the right oil port, the right oil port of the first pressure cartridge valve is connected with the left oil port of the second pressure cartridge valve, the port X of the first pressure cartridge valve is connected with an oil inlet of the first overflow valve, the oil inlet of the second overflow valve is connected, the X port of the first pressure cartridge valve is also connected with the B port of the third two-position four-way reversing valve, the oil outlet of the second overflow valve is connected with the T port of the third two-position four-way reversing valve, the A port of the third two-position four-way reversing valve is connected with the left oil port of the first pressure cartridge valve, and the oil outlet of the first overflow valve is connected with the left oil port of the first pressure cartridge valve.
The further technical scheme is that the first two-position four-way reversing valve, the second two-position four-way reversing valve, the third two-position four-way reversing valve and the fourth two-position four-way reversing valve are all single electric control two-position four-way electromagnetic reversing valves.
The action process is as follows:
during return stroke (namely the process of resetting the upper tool apron after shearing by the shearing machine), the electromagnets of the first two-position four-way reversing valve and the fourth two-position four-way reversing valve are electrified, the shearing cylinder in the middle of the shearing machine returns stroke (namely the shearing cylinder has a rod cavity for feeding oil and has no rod cavity for returning oil, and because piston rods of the three shearing cylinders are connected with the upper tool apron, piston rods of the shearing cylinders on two sides of the middle shearing cylinder also return stroke but have no oil feeding and discharging), when material clamping occurs, the pressure relay acts, so that the right electromagnet of the three-position four-way reversing valve is obtained, oil on an oil feeding oil path enters the rod cavities of the two shearing cylinders on two sides of the middle shearing cylinder, the condition of simultaneous return stroke of the three cylinders is formed, when the material clamping is no longer connected with the upper and lower blades, the pressure of.
The utility model has the advantages and the beneficial effects that: the pressure relay is arranged on an oil inlet oil way of a shearing cylinder in the middle of the shearing machine, a single-cylinder return stroke is adopted during the return stroke of the shearing cylinder, the return stroke speed is high, if the material blocking cylinder cannot return stroke, the three cylinders return stroke together after a signal is given by the pressure relay, the problem that the material blocking cylinder cannot return stroke is solved, the single-cylinder return stroke is continued after the material blocking is stopped, and the return stroke speed is high; the single-cylinder return stroke is started, and meanwhile, the oil cylinders on the left side and the right side are directly communicated with the oil tank through the rod cavities to release air, so that the return stroke speed is high, the oil consumption is low, then the oil circuit pressure rises when the return stroke is blocked due to the fact that materials sheared in the early stage are clamped between the upper blade and the lower blade, when the set value is increased, the pressure relay sends a signal to enable the three-position four-way reversing valve to be powered on, the condition that the three cylinders return stroke simultaneously is formed so as to solve the problem that the return stroke is blocked by the materials, when the materials are blocked by the upper blade or the lower blade or the upper blade and the lower blade (not connected to the blades), the oil circuit pressure is reduced, the condition that the single-cylinder return stroke is returned due to the action of the pressure. The oil circuit adopts a flexible pipeline, so that the damage of vibration generated when the equipment runs and the pipeline is used to the pipeline interface can be effectively reduced during connection; and is convenient for maintenance.
Drawings
Fig. 1 is a schematic diagram of a quick return hydraulic system of a shearing machine according to the present invention;
FIG. 2 is an enlarged schematic view of the upper half of FIG. 1;
fig. 3 is an enlarged schematic view of the lower half of fig. 1.
In the figure: 1. a first cartridge valve; 2. a second cartridge valve; 3. a first pressure cartridge valve; 4. a second pressure cartridge valve; 5. a first two-position four-way reversing valve; 6. a second two-position four-way reversing valve; 7. a third two-position four-way reversing valve; 8. a fourth two-position four-way reversing valve; 9. a three-position four-way reversing valve; 10. a first overflow valve; 11. a second overflow valve; 12. a third overflow valve; 13. a first shuttle valve; 14. a second shuttle valve; 15. a pressure relay; 16. an oil cylinder; 17. a flexible conduit; 18. and an oil inlet channel.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1 to 3, the utility model relates to a quick return hydraulic system of shearing machine, including first cartridge valve 1 and second pressure cartridge valve 4, its B mouth of first cartridge valve 1 passes through the oil circuit and links to each other with the pole chamber of shearing machine middle cylinder 16, install flexible pipeline 17 and pressure relay 15 on the aforesaid oil circuit, its a mouth of first cartridge valve 1 passes through oil inlet circuit 18 and links to each other with the oil pump, its X mouth of first cartridge valve 1 links to each other with the P mouth of first two-position four-way reversing valve 5, the a mouth of first two-position four-way reversing valve 5 links to each other with the a mouth of first shuttle valve 13, the P1 mouth of first shuttle valve 13 passes through the pilot control oil circuit and links to each other with its B mouth of first cartridge valve 1, the P2 mouth of first shuttle valve 13 passes through the pilot control oil circuit and links to each other with its a mouth of first cartridge valve 1; the rod cavities of the oil cylinders 16 on the left side and the right side of the middle oil cylinder 16 of the shearing machine are connected with the B port of a three-position four-way reversing valve 9 with a U-shaped middle position function through oil passages, the B ports of the three-position four-way reversing valve 9 are connected with the rod cavity of the middle oil cylinder 16 of the shearing machine through branch oil passages, the A ports of the three-position four-way reversing valve 9 are connected with an oil tank, the rodless cavities of the three oil cylinders 16 of the shearing machine are connected with the A port of a second pressure cartridge valve 4 through oil passages, one of two oil ports on the side part of the second pressure cartridge valve 4 is connected with the oil tank, the other oil port is connected with the X port of the second pressure cartridge valve 4 through a third overflow valve 12, and the X port of the second pressure cartridge valve 4 is also connected with the B port. An oil inlet of the third overflow valve 12 is connected with an X port of the second pressure cartridge valve 4, and an oil outlet of the third overflow valve 12 is connected with an oil port on the side part of the second pressure cartridge valve 4; and a port P of the fourth two-position four-way reversing valve 8 is connected with an oil port on the side part of the second pressure cartridge valve 4. The rodless cavities of the three oil cylinders 16 of the shearing machine are also connected with a port B of the second cartridge valve 2 through a branch oil path, a port A of the second cartridge valve 2 is connected with an oil inlet path 18, a port X of the second cartridge valve 2 is connected with a port A of the second shuttle valve 14, a port P1 of the second shuttle valve 14 is connected with a port B of the second cartridge valve 2, a port P2 of the second shuttle valve 14 is connected with a port P of the second two-position four-way reversing valve 6, a port A of the second two-position four-way reversing valve 6 is connected with a port A of the second cartridge valve 2, and a port B of the second cartridge valve 2 is connected with an oil tank. The port B of the first cartridge valve 1 is connected with the port A of the first pressure cartridge valve 3 through a branch oil path, the two oil ports on the side part of the second pressure cartridge valve 4 are respectively a left oil port and a right oil port, the right oil port is connected with an oil tank, the left oil port is connected with the port X of the second pressure cartridge valve 4 through a third overflow valve 12, the side part of the first pressure cartridge valve 3 is also provided with the left oil port and the right oil port, the right oil port of the first pressure cartridge valve 3 is connected with the left oil port of the second pressure cartridge valve 4, the port X of the first pressure cartridge valve 3 is connected with the oil inlet of a first overflow valve 10 and the oil inlet of a second overflow valve 11, the port X of the first pressure cartridge valve 3 is also connected with the port B of a third two-position four-way reversing valve 7, the oil outlet of the second overflow valve 11 is connected with the port T of the third two-position four-way reversing valve 7, the port A of the third pressure cartridge valve 7 is connected with the port left oil, an oil outlet of the first overflow valve 10 is connected with a left oil port of the first pressure cartridge valve 3. The first two-position four-way reversing valve 5, the second two-position four-way reversing valve 6, the third two-position four-way reversing valve 7 and the fourth two-position four-way reversing valve 8 are all single electric control two-position four-way electromagnetic reversing valves. The allowable pressure adjusting ranges of the first overflow valve 10, the second overflow valve 11 and the third overflow valve 12 are 0-15 Mpa.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The quick return hydraulic system of the shearing machine is characterized by comprising a first cartridge valve and a second pressure cartridge valve, wherein a port B of the first cartridge valve is connected with a rod cavity of a middle oil cylinder of the shearing machine through an oil way, a flexible pipeline and a pressure relay are installed on the oil way, a port A of the first cartridge valve is connected with an oil pump through an oil inlet way, a port X of the first cartridge valve is connected with a port P of a first two-position four-way reversing valve, the port A of the first two-position four-way reversing valve is connected with the port A of a first shuttle valve, the port P1 of the first shuttle valve is connected with the port B of the first cartridge valve through a pilot control oil way, and the port P2 of the first shuttle valve is connected with the port A of the first cartridge valve through a pilot control oil way; the rod cavities of the cylinders on the left side and the right side of the middle cylinder of the shearing machine are connected with the ports B of the three-position four-way reversing valve with the U-shaped middle function through oil paths, the ports B of the three-position four-way reversing valve are connected with the rod cavity of the middle cylinder of the shearing machine through branch oil paths, the port A of the three-position four-way reversing valve is connected with the oil tank, the rodless cavities of the three cylinders of the shearing machine are connected with the port A of the second pressure cartridge valve through the oil paths, one of the two oil ports on the side part of the second pressure cartridge valve is connected with the oil tank, the other of the two oil ports is connected with the port X of the second pressure cartridge valve through a third overflow valve, and the port X of the second pressure cartridge valve is also connected.
2. A quick return hydraulic system of a shearing machine according to claim 1, characterized in that an oil inlet of the third overflow valve is connected with an X port of the second pressure cartridge valve, and an oil outlet of the third overflow valve is connected with an oil port at the side of the second pressure cartridge valve; and a port P of the fourth two-position four-way reversing valve is connected with an oil port on the side part of the second pressure cartridge valve.
3. A quick return hydraulic system of a shearing machine as claimed in claim 2, characterized in that the rodless cavities of the three cylinders of the shearing machine are further connected with a port B of a second cartridge valve through a branch oil path, a port A of the second cartridge valve is connected with an oil inlet path, a port X of the second cartridge valve is connected with a port A of a second shuttle valve, a port P1 of the second shuttle valve is connected with a port B of the second cartridge valve, a port P2 of the second shuttle valve is connected with a port P of a second two-position four-way reversing valve, a port A of the second two-position four-way reversing valve is connected with a port A of the second cartridge valve, and a port B of the second cartridge valve is connected with an oil tank.
4. A quick return hydraulic system of a shearing machine as claimed in claim 3, wherein the port B of the first cartridge valve is connected with the port A of the first pressure cartridge valve through a branch oil path, the two oil ports on the side of the second pressure cartridge valve are respectively a left oil port and a right oil port, the right oil port is connected with an oil tank, the left oil port is connected with the port X of the second pressure cartridge valve through a third overflow valve, the side of the first pressure cartridge valve is also provided with the left oil port and the right oil port, the right oil port of the first pressure cartridge valve is connected with the left oil port of the second pressure cartridge valve, the port X of the first pressure cartridge valve is connected with the oil inlet of the first overflow valve and the oil inlet of the second overflow valve, the port X of the first pressure cartridge valve is further connected with the port B of the third two-position four-way reversing valve, the oil outlet of the second overflow valve is connected with the port T of the third two-position four-way reversing valve, the port A of the third two-position four-way reversing, an oil outlet of the first overflow valve is connected with a left oil port of the first pressure cartridge valve.
5. A quick return hydraulic system of a shearing machine according to claim 4, wherein the first, second, third and fourth two-position four-way reversing valves are single electrically controlled two-position four-way electromagnetic reversing valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921532008.7U CN210949318U (en) | 2019-09-16 | 2019-09-16 | Quick return hydraulic system of shearing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921532008.7U CN210949318U (en) | 2019-09-16 | 2019-09-16 | Quick return hydraulic system of shearing machine |
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| CN210949318U true CN210949318U (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921532008.7U Active CN210949318U (en) | 2019-09-16 | 2019-09-16 | Quick return hydraulic system of shearing machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113634809A (en) * | 2021-10-13 | 2021-11-12 | 山东泰丰智能控制股份有限公司 | Control system for solving cutter clamping fault |
| CN114251318A (en) * | 2021-12-21 | 2022-03-29 | 江苏高德液压机械有限公司 | Rapid box type shearing machine and working method thereof |
-
2019
- 2019-09-16 CN CN201921532008.7U patent/CN210949318U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113634809A (en) * | 2021-10-13 | 2021-11-12 | 山东泰丰智能控制股份有限公司 | Control system for solving cutter clamping fault |
| CN114251318A (en) * | 2021-12-21 | 2022-03-29 | 江苏高德液压机械有限公司 | Rapid box type shearing machine and working method thereof |
| CN114251318B (en) * | 2021-12-21 | 2023-12-19 | 江苏高德液压机械有限公司 | Quick box-type shearing machine and working method thereof |
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