Gas circuit control loop suitable for pneumatic press
By designing the gas circuit control circuits of gas storage cylinders, main cylinders, check-way valves and solenoid valves in the pneumatic press, the problem of insufficient speed and stability of the pneumatic press is solved, and the platform is rapidly reduced and production quality is achieved. ensure.
Patent Information
- Application Number
- CN202421140790.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-23
AI Technical Summary
The main cylinder speed and stability of pneumatic presses are not as fast as those of servo presses and hydraulic presses, which affects production efficiency and product quality.
An air circuit control circuit including gas storage cylinder, main cylinder, one-way valve and solenoid valve is designed. By setting up a pressurized gas circuit, a return gas circuit and a switching branch, a three-position five-way solenoid valve and two-way solenoid valve are used. The valve realizes rapid rise and slow decline of the platform, ensuring that the platform position remains and no return flue during the production process.
Improve the speed and stability of the main cylinder of the pneumatic press, realize the platform quickly drops to the product surface and fits the product, ensures that the production quality and rhythm do not decrease, and realizes follow-up and emergency stops in the mold change mode. maintain position.
Smart Images
Figure CN222346377U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of pneumatic presses, in particular to an air path control loop suitable for pneumatic presses. Background Art
[0002] A pneumatic press is a stamping press. In production, the stamping process has the advantages of saving materials and energy, high efficiency, low technical requirements for operators, and the ability to produce products that cannot be achieved by mechanical processing through various mold applications. Therefore, its use is becoming more and more extensive.
[0003] As competition among enterprises becomes increasingly fierce, cost reduction and efficiency improvement are the keywords for all companies. In this context, pneumatic presses suitable for medium-load conditions have gradually replaced servo presses and hydraulic presses. However, the speed and stability of the main cylinder of pneumatic presses are not as good as those of servo and hydraulic presses. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide an air path control circuit suitable for a pneumatic press and capable of improving the speed and stability of a main cylinder.
[0005] In order to solve the above technical problems, the technical solution of the utility model is: a gas circuit control circuit suitable for a pneumatic press, the innovation of which is: comprising a gas storage bottle, a main cylinder, a one-way valve and a solenoid valve;
[0006] There are two one-way valves, namely the first one-way valve and the second one-way valve, and there are three solenoid valves, namely a three-position five-way solenoid valve, a two-way solenoid valve that closes when powered on, and a two-way solenoid valve that opens when powered on;
[0007] The main cylinder is connected to two air inlet and outlet circuits, namely a pressure air circuit and a return air circuit. The gas storage cylinder is connected to the main air circuit, which is connected to the pressure air circuit and the return air circuit through a three-position five-way solenoid valve;
[0008] The pressing gas circuit is connected with a first one-way valve, the return gas circuit is connected with a second one-way valve and a two-way solenoid valve that is closed when powered on in sequence, a switching branch is also connected between the second one-way valve and the two-way solenoid valve that is closed when powered on on the return gas circuit, and a two-way solenoid valve that is open when powered on is connected on the switching branch, the switching branch is a mold-changing branch, and a section of the return gas circuit from the connection point of the switching branch and the return gas circuit to the three-position five-way solenoid valve is a mass production branch;
[0009] The first one-way valve is also connected to the return air circuit through the first branch air circuit, and the second one-way valve is also connected to the compression air circuit through the second branch air circuit.
[0010] Furthermore, the one-way valve is a pilot-operated one-way valve.
[0011] Furthermore, the three-position five-way solenoid valve is a large-flow three-position five-way solenoid valve with a Cv value of 5.2.
[0012] The advantages of the utility model are: the pneumatic circuit of the utility model is provided with two branch air circuits. In the mass production mode, the mass production branch air circuit is used to switch the mold changing branch air circuit, and the mold changing mode always uses the mold changing branch air circuit, so that the rising speed of the platform is not affected, and the platform quickly descends to 100mm from the product surface and decelerates and descends until it fits the product; in the mold changing mode, the platform moves slowly and stops as it moves, and the emergency stop of the equipment can realize the position maintenance of the lifting platform without backwashing.
[0013] The pneumatic circuit for controlling the main cylinder of the utility model does not reduce the production rhythm and ensures the production quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of an air control circuit suitable for a pneumatic press according to the utility model. DETAILED DESCRIPTION
[0015] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.
[0016] like Figure 1 The air control circuit shown is suitable for a pneumatic press, comprising a gas storage bottle 1, a main cylinder 3, a one-way valve and a solenoid valve.
[0017] There are two one-way valves, namely the first one-way valve 4 and the second one-way valve 7, and the first one-way valve 4 and the second one-way valve 7 are both pilot one-way valves. There are three solenoid valves, namely the three-position five-way solenoid valve 11, the two-way solenoid valve 9 that is closed when power is turned on, and the two-way solenoid valve 13 that is open when power is turned on, and the three-position five-way solenoid valve 11 is a large-flow three-position five-way solenoid valve with a Cv value of 5.2.
[0018] The main cylinder 3 is connected to two air inlet and outlet circuits, namely the compression air circuit 6 and the return air circuit 14. The gas storage bottle 1 is connected to the main air circuit 2, which is connected to the compression air circuit 6 and the return air circuit 14 through a three-position five-way solenoid valve 11.
[0019] A first one-way valve is connected to the pressing air circuit 6, and a second one-way valve 7 and a two-way solenoid valve 9 that is closed when energized are connected in sequence to the return air circuit 14, and the second one-way valve 7 is located on a side close to the second one-way valve 7, and the two-way solenoid valve 9 that is closed when energized is located on a side close to the three-position five-way solenoid valve 11. A switching branch is also connected between the second one-way valve 7 and the two-way solenoid valve 9 that is closed when energized on on the return air circuit 14, and a two-way solenoid valve 13 that is open when energized is connected to the switching branch. The switching branch is a mold-changing branch air circuit 12, and a section of the return air circuit from the connection point of the switching branch and the return air circuit 14 to the three-position five-way solenoid valve 11 is a mass production branch air circuit 10.
[0020] The first one-way valve 4 is also connected to the return air circuit 14 through the first branch air circuit 5, and the connection point between the first branch air circuit 5 and the return air circuit 14 is located on a section of the return air circuit 14 between the second one-way valve 7 and the connection point between the switching branch and the return air circuit 14. The second one-way valve 7 is also connected to the pressing air circuit 6 through the second branch air circuit 8, and the connection point between the second branch air circuit 8 and the pressing air circuit 6 is located on a section of the pressing air circuit 6 between the first one-way valve 4 and the three-position five-way solenoid valve 11.
[0021] The pneumatic circuit of the utility model is provided with two branch air circuits. In the mass production mode, the mass production branch air circuit is used to switch the mold changing branch air circuit 12, and the mold changing mode always uses the mold changing branch air circuit 10. This can ensure that the rising speed of the platform is not affected, and the platform quickly descends to 100 mm from the product surface and then decelerates and descends until it fits the product. In the mold changing mode, the platform moves slowly and stops as it moves. The emergency stop of the equipment can maintain the position of the lifting platform without backwashing.
[0022] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. A pneumatic control circuit suitable for a pneumatic press, characterized in that: It includes a gas storage bottle, a master cylinder, a one-way valve and a solenoid valve; There are two one-way valves, namely the first one-way valve and the second one-way valve, and there are three solenoid valves, namely a three-position five-way solenoid valve, a two-way solenoid valve that closes when powered on, and a two-way solenoid valve that opens when powered on; The main cylinder is connected to two air inlet and outlet circuits, namely a pressure air circuit and a return air circuit. The gas storage cylinder is connected to the main air circuit, which is connected to the pressure air circuit and the return air circuit through a three-position five-way solenoid valve; The pressing gas circuit is connected with a first one-way valve, the return gas circuit is connected with a second one-way valve and a two-way solenoid valve that is closed when powered on in sequence, a switching branch is also connected between the second one-way valve and the two-way solenoid valve that is closed when powered on on the return gas circuit, and a two-way solenoid valve that is open when powered on is connected on the switching branch, the switching branch is a mold-changing branch, and a section of the return gas circuit from the connection point of the switching branch and the return gas circuit to the three-position five-way solenoid valve is a mass production branch; The first one-way valve is also connected to the return air circuit through the first branch air circuit, and the second one-way valve is also connected to the compression air circuit through the second branch air circuit.
2. The air control circuit for a pneumatic press according to claim 1, characterized in that: The one-way valve is a pilot-operated one-way valve.
3. The air control circuit for a pneumatic press according to claim 2, characterized in that: The three-position five-way solenoid valve is a large-flow three-position five-way solenoid valve with a Cv value of 5.2.