CN216044680U - Air pressure conversion air circuit and clamp comprising same - Google Patents
Air pressure conversion air circuit and clamp comprising same Download PDFInfo
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- CN216044680U CN216044680U CN202121756105.1U CN202121756105U CN216044680U CN 216044680 U CN216044680 U CN 216044680U CN 202121756105 U CN202121756105 U CN 202121756105U CN 216044680 U CN216044680 U CN 216044680U
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Abstract
One embodiment of the present invention discloses an air pressure conversion air circuit and a clamp including the same, wherein the air pressure conversion air circuit includes: the first pressure regulating valve and the second pressure regulating valve are respectively communicated with an air source, and the output pressure of the first pressure regulating valve is greater than that of the second pressure regulating valve; the multi-position and multi-way first electromagnetic valve is communicated with the air passages of the first pressure regulating valve and the second pressure regulating valve; the multi-position multi-way second electromagnetic valve is communicated with the gas path of the first electromagnetic valve; the air cylinder is communicated with the air passage of the second electromagnetic valve; and the logic controller is used for respectively controlling the working position of the first electromagnetic valve and the working position of the second electromagnetic valve according to working signals and adjusting the pressure output to the cylinder by the air pressure conversion air circuit.
Description
Technical Field
The utility model relates to the technical field of automatic cylinder actions, in particular to an air pressure conversion air circuit and a clamp comprising the same.
Background
The traditional clamp air cylinder air circuit only comprises an air tank, a pressure reducing valve and a direct-acting electromagnetic valve, and the thrust of the air cylinder is large when the air pressure of an air source is large according to a force and pressure formula P (F/S). Therefore, when workers load and unload materials, industrial accidents are easy to occur when the high-pressure air source drives the clamp cylinder to act, and products are easy to damage.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an air pressure conversion air circuit and a clamp comprising the air pressure conversion air circuit, which solve the problems that industrial accidents are easy to generate and products are easy to damage when a high-pressure air source drives an air cylinder to act through high and low air pressures to drive the air cylinder to act in a sectional manner.
In order to achieve the purpose, the utility model adopts the following technical scheme:
in one aspect, the present invention provides an air pressure conversion air circuit, including:
the first pressure regulating valve and the second pressure regulating valve are respectively communicated with an air source, and the output pressure of the first pressure regulating valve is greater than that of the second pressure regulating valve;
the multi-position and multi-way first electromagnetic valve is communicated with the air passages of the first pressure regulating valve and the second pressure regulating valve;
the multi-position multi-way second electromagnetic valve is communicated with the gas path of the first electromagnetic valve;
the air cylinder is communicated with the air passage of the second electromagnetic valve; and
and the logic controller is used for respectively controlling the working position of the first electromagnetic valve and the working position of the second electromagnetic valve according to the working signal and adjusting the pressure output to the cylinder by the air pressure conversion air circuit.
In one embodiment, the first solenoid valve and the second solenoid valve are pilot solenoid valves, respectively.
In one embodiment, the air pressure conversion circuit further comprises a third pressure regulating valve communicated with the air source, the third pressure regulating valve is respectively communicated with the pilot gas circuit of the first electromagnetic valve and the pilot gas circuit of the second electromagnetic valve, and the pilot gas circuits of the first electromagnetic valve and the second electromagnetic valve are controlled to be opened and closed.
In one embodiment, the first solenoid valve is a three-position three-way solenoid valve, the first air inlet is in air path communication with the first pressure regulating valve, the second air inlet is in air path communication with the second pressure regulating valve, the first air outlet is in air path communication with the second solenoid valve, and the first air inlet or the second air inlet of the first solenoid valve is in air path communication with the first air outlet or the first air inlet and the second air inlet are disconnected from the first air outlet in response to the control of the logic controller.
In one embodiment, the second solenoid valve is a two-position five-way solenoid valve, the third air inlet is in air path communication with the first air outlet of the first solenoid valve, the second air outlet and the third air outlet are in air path communication with the cylinder respectively, and the third air inlet of the second solenoid valve is in air path communication with the second air outlet or the third air outlet in response to the control of the logic controller.
In one embodiment, the first solenoid valve is a center-sealed spring-return solenoid valve and the second solenoid valve is a pressure-return solenoid valve.
In a specific embodiment, the air pressure conversion circuit further comprises a position sensor for sensing the position of a cylinder rod of the air cylinder, and the logic controller further controls the working positions of the first solenoid valve and the second solenoid valve according to the output of the position sensor.
In a specific embodiment, the first, second and third pressure regulating valves are pressure reducing valves or throttle valves, respectively.
The air cylinder of the air pressure conversion air passage drives the clamp to work, when the clamp is driven to clamp, the second pressure regulating valve is communicated with the air passages of the first electromagnetic valve and the second electromagnetic valve, air flow is gradually input to the second end of the air cylinder to drive the clamp to move towards one side of the workpiece to be clamped to clamp the workpiece to be clamped, when the preset clamping force is reached, the second pressure regulating valve is disconnected with the air passages of the first electromagnetic valve and the second electromagnetic valve, the first pressure regulating valve is communicated with the air passages of the first electromagnetic valve and the second electromagnetic valve, the air flow is gradually input to the second end of the air cylinder to drive the clamp to clamp and keep the workpiece to be clamped towards one side of the workpiece to be clamped.
In one embodiment, before the clamp is driven to clamp, the third pressure regulating valve is respectively communicated with the first electromagnetic valve and the second electromagnetic valve in an air path mode, and pilot holes of the first electromagnetic valve and the second electromagnetic valve are controlled to be opened.
The utility model has the following beneficial effects:
according to the air pressure conversion air circuit and the clamp comprising the air pressure conversion air circuit, the air cylinder is driven to act in a segmented mode through high air pressure and low air pressure, even if the air cylinder is closed by the low air pressure, misoperation can not cause damage to staff or products, the air cylinder keeps pressure by switching the high air pressure after the air cylinder is detected to be completely closed, the workpieces cannot fall off, and the problem that industrial accidents are easily caused and the products are easily damaged when the air cylinder is driven to act by a high-pressure air source is well solved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are one embodiment of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram illustrating a structure of a conventional clamp cylinder air passage.
Fig. 2 shows a detailed structure diagram of a conventional clamp cylinder air passage.
Fig. 3 is a schematic diagram illustrating a gas circuit component structure for converting gas pressure according to an embodiment of the present invention.
Fig. 4 is a schematic diagram illustrating a specific structure of an air pressure conversion air circuit according to an embodiment of the present invention.
Detailed Description
In order to make the technical solution of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and examples. The present invention will be described in detail with reference to specific examples, but the present invention is not limited to these examples. Variations and modifications may be made by those skilled in the art without departing from the principles of the utility model and should be considered within the scope of the utility model.
As shown in fig. 1 and 2, the conventional jig cylinder air passage includes: a gas tank 10, a pressure reducing valve 11 and a direct-acting solenoid valve 12; the gas tank outputs gas with the pressure of 0.7MPa to a pressure reducing valve, the pressure reducing valve reduces the pressure of the received gas to 0.55MPa and then outputs the gas to the direct-acting electromagnetic valve, and the direct-acting electromagnetic valve reverses the gas to drive the clamp cylinder 13 to close or open. The direct-acting electromagnetic valve is a two-position five-way single-coil spring reset direct-acting electromagnetic valve.
According to the formula of force and pressure P ═ F/S, when the air pressure of the air source is large, the thrust of the air cylinder is large. Therefore, when workers load and unload materials, industrial accidents are easy to occur when the high-pressure air source drives the clamp cylinder to act, and products are easy to damage.
For solving the problem that traditional anchor clamps cylinder gas circuit exists, this embodiment provides an atmospheric pressure conversion gas circuit, as shown in fig. 3, this atmospheric pressure conversion gas circuit includes: the air source 20, the first pressure regulating valve 21, the second pressure regulating valve 22, the third pressure regulating valve 23, the first electromagnetic valve 24, the second electromagnetic valve 25, the air cylinder 26, a position sensor (not shown in the figure) and a logic controller (not shown in the figure).
In FIG. 3, the diamonds represent cross-type communication vessels;
the first pressure regulating valve and the second pressure regulating valve are respectively communicated with an air source. The output pressure of the first pressure regulating valve is larger than that of the second pressure regulating valve, wherein the output pressure of the first pressure regulating valve is the pressure under the normal working condition, and the output pressure of the second pressure regulating valve is the pressure under the low-pressure protection condition.
The first electromagnetic valve and the second electromagnetic valve are all multi-position and multi-way electromagnetic valves. The first electromagnetic valve is communicated with a first pressure regulating valve and a second pressure regulating valve through an air path, the second electromagnetic valve is communicated with the first electromagnetic valve through an air path, and the air cylinder is communicated with the second electromagnetic valve through an air path. Preferably, the first solenoid valve and the second solenoid valve are external pilot solenoid valves respectively, and the pilot solenoid valves can act when the large cylinder diameter is switched, so that damage to the solenoid valves due to excessive force is prevented.
And the third pressure regulating valve is communicated with the air source through a cross-shaped communicating vessel, is respectively communicated with the pilot gas circuit of the first electromagnetic valve and the pilot gas circuit of the second electromagnetic valve, and controls the opening and closing of pilot holes of the first electromagnetic valve and the second electromagnetic valve.
Preferably, the first, second and third pressure regulating valves are pressure reducing valves or throttle valves, respectively.
And the logic controller is used for respectively controlling the working position of the first electromagnetic valve and the working position of the second electromagnetic valve according to the working signal and adjusting the pressure output to the cylinder by the air pressure conversion air circuit. The logic controller can be a single chip microcomputer or a programmable logic controller.
The cylinder is a double-acting single-rod clamp cylinder.
Preferably, the output air pressure of the first pressure regulating valve is greater than 0.5MPa, the output air pressure of the second pressure regulating valve is less than 0.1MPa, and the output air pressure of the third pressure regulating valve is about 0.2 MPa.
In one embodiment, the first solenoid valve is a three-position three-way center-sealed spring-return two-way flow solenoid valve that includes a first inlet port, a second inlet port, and a first outlet port. The first electromagnetic valve responds to the control of the logic controller to connect the first air inlet or the second air inlet of the first electromagnetic valve with the first air outlet air circuit, or disconnect the first air inlet and the second air inlet from the first air outlet air circuit.
The second electromagnetic valve is a two-position five-way single-coil pressure resetting two-way circulation electromagnetic valve and comprises a third air inlet, a second air outlet, a third air outlet, a first exhaust port and a second exhaust port. The third air inlet is communicated with a first air outlet air passage of the first electromagnetic valve, the second air outlet and the third air outlet are respectively communicated with the two passages of the cylinder, the second air outlet is communicated with the first end of the cylinder, the third air outlet is communicated with the second end of the cylinder, the second electromagnetic valve responds to the control of the logic controller to communicate the third air inlet of the second electromagnetic valve with the second air outlet or the third air outlet air passage, and communicate the second air outlet or the third air outlet with the first air outlet air passage or communicate the second air outlet or the third air outlet with the second air outlet air passage. The first and second exhaust ports are for cylinder exhaust.
Those skilled in the art will appreciate that the second solenoid valve can also be replaced with a three-position, five-way solenoid valve.
The position sensor is arranged on the air cylinder and used for sensing the position of an air cylinder rod of the air cylinder, and the logic controller further controls the working positions of the first electromagnetic valve and the second electromagnetic valve according to the output of the position sensor.
The embodiment further provides a clamp comprising an air pressure conversion air passage, wherein the air cylinder of the air pressure conversion air passage drives the clamp to work, before the clamp is driven to clamp, the third pressure regulating valve is respectively communicated with the air passages of the first electromagnetic valve and the second electromagnetic valve to control the pilot holes of the first electromagnetic valve and the second electromagnetic valve to be opened, when the air pressure conversion air passage drives the clamp to clamp, the second pressure regulating valve is communicated with the air passages of the first electromagnetic valve and the second electromagnetic valve to gradually input air flow to the second end of the air cylinder to drive the clamp to move towards one side of a workpiece to be clamped to clamp the workpiece to be clamped, and when a preset clamping force is reached (namely the clamp is completely closed), the second pressure regulating valve is disconnected with the air passages of the first electromagnetic valve and the second electromagnetic valve, the first pressure regulating valve is communicated with the air passages of the first electromagnetic valve and the second electromagnetic valve to gradually input air flow to the second end of the air cylinder, the clamp is driven to face one side of the workpiece to be clamped to clamp and hold the workpiece to be clamped.
In one embodiment of the jig including the air pressure switching circuit, as shown in fig. 4, the first to third pressure regulating valves are pressure reducing valves, the air pressure of the air source 20 is 0.7Mpa, the first pressure regulating valve 21 reduces the pressure of the input air to 0.55Mpa, the second pressure regulating valve 22 reduces the pressure of the input air to 0.05Mpa, and the third pressure regulating valve 23 reduces the pressure of the input air to 0.2 Mpa.
When the cylinder works, the air source provides air for the first to third pressure regulating valves.
And the third pressure regulating valve reduces the pressure of the received gas so as to provide pilot gas pressure for the first electromagnetic valve and the second electromagnetic valve, so that pilot holes of the first electromagnetic valve and the second electromagnetic valve are opened.
And the logic controller controls the second electromagnetic valve to be electrified and the A end of the first electromagnetic valve to be electrified according to the working signal, so that the second air inlet and the first air outlet of the first electromagnetic valve are communicated, the third air inlet and the third air outlet of the second electromagnetic valve are communicated, and the second air outlet and the first air outlet are communicated.
The second pressure regulating valve provides low-pressure gas of 0.05Mpa to the second end D of the cylinder through the first electromagnetic valve and the second electromagnetic valve, pushes the cylinder rod to close the cylinder, and exhausts the gas through the first exhaust port of the second pressure regulating valve.
The cylinder drives the clamp assembled on the cylinder to work, a worker manually assembles or replaces a workpiece in the process of closing the cylinder, and the cylinder can drive the clamp to move towards one side of the workpiece to be clamped to clamp the workpiece to be clamped.
When the logic controller receives a complete closing signal of the cylinder sent by the position sensor, the B end of the first electromagnetic valve is controlled to be electrified, so that the first air inlet and the first air outlet of the first electromagnetic valve are communicated, the third air inlet and the third air outlet are communicated with the second electromagnetic valve, and the second air outlet and the first air outlet are communicated with each other.
The first pressure regulating valve supplies 0.55Mpa of high-pressure gas to the second end D of the cylinder through the first electromagnetic valve and the second electromagnetic valve, so that the cylinder keeps pressure, the clamp is driven to face one side of the workpiece to be clamped to clamp the workpiece to be clamped, and exhaust is performed through a first exhaust port of the second pressure regulating valve.
After the workpiece on the clamp is processed, the logic controller controls the second electromagnetic valve to lose power according to the working signal, so that the third air inlet and the second air outlet of the second electromagnetic valve are communicated, the third air outlet and the second air outlet are communicated, and the first electromagnetic valve is still communicated with the first air inlet and the first air outlet.
The first pressure regulating valve supplies high-pressure gas of 0.55Mpa to the first end C of the cylinder through the first electromagnetic valve and the second electromagnetic valve, pushes the cylinder rod to open the cylinder, and exhausts the gas through the second exhaust port of the second pressure regulating valve.
When the logic controller receives a cylinder full-opening signal sent by the position sensor, the first electromagnetic valve is controlled to be powered off, so that the first electromagnetic valve works at the middle position, and the first air inlet, the second air inlet and the first air outlet are not communicated.
The technical personnel in the field can understand that one end of the cylinder rod is provided with a piston, the cylinder is considered to be completely closed when the piston of the cylinder rod is closely attached to one end of the cylinder assembly fixture, and the cylinder is considered to be completely opened when the piston of the cylinder rod is closely attached to one end of the cylinder which is not provided with the fixture, wherein the position sensor can judge whether the cylinder is completely closed or not according to whether the clamping force of the fixture for clamping a workpiece to be clamped reaches the preset clamping force or not.
The air pressure conversion air circuit and the clamp comprising the air pressure conversion air circuit drive the air cylinder to act in a segmented mode through high air pressure and low air pressure, the low air pressure enables the air cylinder to be closed, even if the air cylinder is closed, misoperation cannot be caused to workers or products, the workers can safely finish work piece assembly or replacement work in the air cylinder closing process, the air cylinder keeps pressure by switching high pressure after the air cylinder is detected to be completely closed, the work pieces cannot fall off, and the problem that industrial accidents are easily caused when the air cylinder is driven to act through a high-pressure air source and the products are easily damaged is well solved.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (10)
1. The utility model provides an atmospheric pressure conversion gas circuit, its characterized in that, atmospheric pressure conversion gas circuit includes:
the first pressure regulating valve and the second pressure regulating valve are respectively communicated with an air source, and the output pressure of the first pressure regulating valve is greater than that of the second pressure regulating valve;
the multi-position and multi-way first electromagnetic valve is communicated with the air passages of the first pressure regulating valve and the second pressure regulating valve;
the multi-position multi-way second electromagnetic valve is communicated with the gas path of the first electromagnetic valve;
the air cylinder is communicated with the air passage of the second electromagnetic valve; and
and the logic controller is used for respectively controlling the working position of the first electromagnetic valve and the working position of the second electromagnetic valve according to the working signal and adjusting the pressure output to the cylinder by the air pressure conversion air circuit.
2. The air pressure conversion air circuit according to claim 1, wherein the first solenoid valve and the second solenoid valve are pilot solenoid valves, respectively.
3. The air pressure conversion circuit according to claim 2, further comprising a third pressure regulating valve in communication with the air source, wherein the third pressure regulating valve is in communication with the pilot air paths of the first solenoid valve and the second solenoid valve respectively, and controls the opening and closing of the pilot holes of the first solenoid valve and the second solenoid valve.
4. The air pressure conversion circuit according to claim 1, wherein the first solenoid valve is a three-position three-way solenoid valve, the first air inlet is in air communication with a first pressure regulating valve, the second air inlet is in air communication with a second pressure regulating valve, the first air outlet is in air communication with the second solenoid valve, and the first air inlet or the second air inlet of the first solenoid valve is in air communication with the first air outlet or the first air inlet and the second air inlet are disconnected from the first air outlet in response to the control of the logic controller.
5. The air pressure conversion air passage according to claim 4, wherein the second solenoid valve is a two-position five-way solenoid valve, the third air inlet is in air passage communication with the first air outlet of the first solenoid valve, the second air outlet and the third air outlet are in air passage communication with the cylinder respectively, and the third air inlet of the second solenoid valve is in air passage communication with the second air outlet or the third air outlet in response to the control of the logic controller.
6. The air pressure conversion circuit according to claim 1, wherein the first solenoid valve is a center-sealed spring-return solenoid valve, and the second solenoid valve is a pressure-return solenoid valve.
7. The air pressure switching circuit according to claim 1, further comprising a position sensor for sensing a position of a rod of the air cylinder, wherein the logic controller further controls the operating positions of the first solenoid valve and the second solenoid valve according to an output of the position sensor.
8. The air pressure switching circuit of claim 3, wherein the first, second and third pressure regulating valves are pressure reducing valves or throttle valves, respectively.
9. The clamp comprising the air pressure conversion air circuit is characterized in that the clamp is driven to work by the air cylinder of the air pressure conversion air circuit according to any one of claims 1 to 8, when the clamp is driven to clamp, the second pressure regulating valve is communicated with the air circuits of the first electromagnetic valve and the second electromagnetic valve, air flow is gradually input to the second end of the air cylinder to drive the clamp to move towards one side of a workpiece to be clamped to clamp the workpiece to be clamped, when a preset clamping force is reached, the second pressure regulating valve is disconnected from the air circuits of the first electromagnetic valve and the second electromagnetic valve, the first pressure regulating valve is communicated with the air circuits of the first electromagnetic valve and the second electromagnetic valve, the air flow is gradually input to the second end of the air cylinder to drive the clamp to clamp and keep the workpiece to be clamped towards one side of the workpiece to be clamped.
10. The clamp of claim 9, wherein prior to actuating said clamp to clamp, said third pressure regulating valve is in pneumatic communication with a first solenoid valve and a second solenoid valve, respectively, controlling pilot holes of said first and second solenoid valves to open.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121756105.1U CN216044680U (en) | 2021-07-29 | 2021-07-29 | Air pressure conversion air circuit and clamp comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121756105.1U CN216044680U (en) | 2021-07-29 | 2021-07-29 | Air pressure conversion air circuit and clamp comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216044680U true CN216044680U (en) | 2022-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121756105.1U Active CN216044680U (en) | 2021-07-29 | 2021-07-29 | Air pressure conversion air circuit and clamp comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216044680U (en) |
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2021
- 2021-07-29 CN CN202121756105.1U patent/CN216044680U/en active Active
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