Multi-cylinder linkage control system

Abstract

The utility model discloses and provides a novel multi-cylinder linkage control system, which is characterized in that a plurality of air paths are added on the basis of the air path of the original control system, and a one-way valve and an electromagnetic valve are added, so that a pressure relief loop for controlling a jig to ascend and descend is changed, and the risk is reduced through decentralized control; the air cylinder device comprises a first air cylinder, a second air cylinder, a first electromagnetic valve and a second electromagnetic valve, and the working end and the reset end of the first air cylinder are connected and matched with the first electromagnetic valve through pipelines respectively to form a first air path and a second air path. The working end and the reset end of the second air cylinder are connected and matched with the second electromagnetic valve through pipelines to form a third air channel and a fourth air channel, air inlet channels of the first electromagnetic valve and the second electromagnetic valve are connected with an external air source, and a pressure relief module and a linkage module are arranged on the first air channel and the second air channel. And the first gas circuit is connected and matched with the third gas circuit through the linkage module. The device is applied to the field of industrial automation.

Description

Technical Field

[0001] The utility model is applied to the field of industrial automation, and particularly relates to a multi-cylinder linkage control system. Background Art

[0002] In the field of industrial automation, multi-cylinder linkage control systems are widely used in various automated equipment and production lines to achieve complex mechanical movements and precise control. However, existing multi-cylinder linkage control systems often have shortcomings in dealing with solenoid valve failures. If the solenoid valves they control fail, the cylinders may suddenly change their movement posture, causing damage to the fixture and the product under test, or even leading to production accidents. Furthermore, the linkage and stability of the cylinder movements in existing systems need to be improved to meet the increasing demands for production efficiency and product quality. Therefore, to address these issues, a new multi-cylinder linkage control system would be designed. This system would add additional air circuits to the existing control system, add check valves and solenoid valves, and modify the pressure relief circuits that control the lifting and lowering of the fixture. This decentralized control reduces risk. If the original solenoid valves controlling the lifting and lowering of the fixture fail, the additional air circuits would allow the fixture to continue moving, preventing uncontrolled lifting of the fixture, ensuring equipment safety, and thus improving system reliability and security. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a novel multi-cylinder linkage control system. The system adds more air paths to the air paths of the original control system, and adds a one-way valve and a solenoid valve, thereby changing the pressure relief circuit for controlling the rise and fall of the fixture. Risks are reduced through decentralized control. When a problem occurs with the original solenoid valve for controlling the rise / fall, the newly added air path allows the fixture to continue to move, preventing the fixture from rising out of control, ensuring the safety of the equipment, and thus improving the reliability and safety of the system.

[0004] The technical solution adopted by the present invention is as follows: the present invention includes a first air cylinder, a second air cylinder, a first solenoid valve, and a second solenoid valve, wherein the working end and the reset end of the first air cylinder are respectively connected to the first solenoid valve through a pipeline to form a first air path and a second air path, and the working end and the reset end of the second air cylinder are respectively connected to the second solenoid valve through a pipeline to form a third air path and a fourth air path, and the air inlet of the first solenoid valve and the second solenoid valve are connected to an external air source, and a pressure relief module and a linkage module are provided on the first air path and the second air path, and the first air path is connected to the third air path through the linkage module. It can be seen that the first solenoid valve and the second solenoid valve respectively control the first air cylinder and the second air cylinder, and the pressure relief module provides a deflation protection function for both the first air path and the second air path to prevent the first air cylinder from suddenly changing its action posture when the first solenoid valve fails, thereby damaging the fixture and the product to be tested, and the linkage module provides a linkage function for the first air path and the third air path, so that when the first solenoid valve fails, the second solenoid valve also keeps the first air cylinder in motion, resisting the force of the first cylinder's opposite action.

[0005] Furthermore, the pressure relief module includes a first three-way valve, a first one-way valve and a third solenoid valve. The first three-way valve is respectively connected and cooperated with the reset end of the first cylinder, the reverse interface of the first one-way valve and the third solenoid valve, and the positive interface of the first one-way valve is connected and cooperated with the first solenoid valve.

[0006] Furthermore, the linkage module includes a second three-way valve, a second one-way valve and a third three-way valve, the second three-way valve is respectively connected and cooperated with the working end of the first cylinder, the reverse interface of the second one-way valve and the pressure relief module, and the third three-way valve is respectively connected and cooperated with the working end of the second cylinder, the positive interface of the second one-way valve and the second solenoid valve.

[0007] Furthermore, the first gas circuit and the second gas circuit are provided with a throttle speed regulating valve near the first cylinder, and the third gas circuit and the fourth gas circuit are provided with a throttle speed regulating valve near the second cylinder.

[0008] Furthermore, sensors are provided on the first cylinder and the second cylinder at locations close to the working end and the reset end, and the sensors are connected to and cooperate with an external controller via electrical signals.

[0009] Furthermore, the first solenoid valve is a five-port, three-position, dual-control solenoid valve, the A and B interfaces of the first solenoid valve are respectively connected to the two pressure relief modules, and the P interface of the first solenoid valve is connected to the external gas source equipment.

[0010] Furthermore, the third solenoid valve is a five-port, two-position, single-control solenoid valve, the A interface of the third solenoid valve is connected and matched with the first three-way valve, and the P interface of the third solenoid valve is in a closed state.

[0011] Furthermore, the second solenoid valve is a five-port, two-position single-control solenoid valve, the A interface of the second solenoid valve is connected and cooperated with the throttling speed control valve on the second cylinder near the reset end, the B interface of the second solenoid valve is connected and cooperated with the linkage module, and the P interface of the second solenoid valve is connected and cooperated with the external air source equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a system block diagram of the utility model. DETAILED DESCRIPTION

[0013] like Figure 1 As described, in this embodiment, the utility model includes a first cylinder 1, a second cylinder 2, a first solenoid valve 3 and a second solenoid valve 4, the working end and the reset end of the first cylinder 1 are respectively connected to the first solenoid valve 3 through pipelines to form a first air path 10 and a second air path 11, the working end and the reset end of the second cylinder 2 are respectively connected to the second solenoid valve 4 through pipelines to form a third air path 12 and a fourth air path 13, the air inlets of the first solenoid valve 3 and the second solenoid valve 4 are connected to an external air source, the first air path 10 and the second air path 11 are provided with a pressure relief module 5 and a linkage module 6, the first air path 10 is connected to the third air path 12 through the linkage module 6. It can be seen that the first solenoid valve 3 and the second solenoid valve 4 respectively control the first cylinder 1 and the second cylinder 2, and the pressure relief module 5 provides air leakage protection for the first air circuit 10 and the second air circuit 11 to prevent the first cylinder 1 from suddenly changing its action posture when the first solenoid valve 3 fails, thereby causing damage to the fixture and the product to be tested. The linkage module 6 provides a linkage between the first air circuit 10 and the third air circuit 12. When the first solenoid valve 3 fails, the second solenoid valve 4 also keeps the first cylinder 1 in action to resist the force of the opposite action of the first cylinder 1.

[0014] like Figure 1In this embodiment, the pressure relief module 5 includes a first three-way valve 50, a first check valve 51, and a third solenoid valve 52. The first three-way valve 50 is respectively connected to the reset end of the first cylinder 1, the reverse port of the first check valve 51, and the third solenoid valve 52. The forward port of the first check valve 51 is connected to the first solenoid valve 3. Thus, the first three-way valve 50 serves to merge fluids from different pipelines into one pipeline or to separate fluids in one pipeline into different pipelines, thereby achieving control over flow diversion and merging. The first check valve 51 prevents fluid backflow and ensures flow consistency. When the first solenoid valve 3 fails, an external controller controls the third solenoid valve 52 to perform an exhaust action, preventing the first cylinder 1 from switching from a downward pressure action to an upward action or vice versa. When the first solenoid valve 3 is normal, the third solenoid valve 52 closes, allowing the first cylinder 1 to perform a normal upward or downward action. The third solenoid valve 52 acts as a switch in the gas circuit.

[0015] like Figure 1 In this embodiment, the linkage module 6 includes a second three-way valve 60, a second one-way valve 61 and a third three-way valve 62. The second three-way valve 60 is respectively connected to the working end of the first cylinder 1, the reverse interface of the second one-way valve 61 and the pressure relief module 5, and the third three-way valve 62 is respectively connected to the working end of the second cylinder 2, the positive interface of the second one-way valve 61 and the second solenoid valve 4. It can be seen that the second three-way valve 60 and the third three-way valve 62 play the role of merging the fluids of different pipelines into one pipeline or separating the fluids in one pipeline into different pipelines, thereby realizing the control of diversion and merging. The second one-way valve 61 plays the role of preventing the fluid from flowing back and ensuring the consistency of the flow direction. Due to the existence of the second three-way valve 60, the linkage module 6 is respectively connected and cooperated with the second solenoid valve 4 and the pressure relief module 5, so that the second solenoid valve 4 strengthens the downward pressure action of the first cylinder 1 to push the fixture. At the same time, when the first solenoid valve 3 fails, the P interface of the first solenoid valve 3 is switched from the A interface to the B interface, and the second solenoid valve 4 also allows the first cylinder 1 to continue to move, resisting the force of the opposite action of the first cylinder 1.

[0016] like Figure 1In this embodiment, the first gas path 10 and the second gas path 11 are provided with a throttle speed regulating valve 7 near the first cylinder 1, and the third gas path 12 and the fourth gas path 13 are provided with a throttle speed regulating valve 7 near the second cylinder 2. Thus, the throttle speed regulating valve 7 can accurately control the flow rate and speed of gas and liquid, and the operating speed of the first cylinder 1 and the second cylinder 2 can be adjusted by adjusting the throttle speed regulating valve 7.

[0017] like Figure 1 As mentioned above, in this embodiment, sensors 9 are installed near the working end and the reset end of each of the first and second cylinders 1 and 2. These sensors 9 are connected to an external controller via electrical signals. Therefore, the first and second cylinders 1 and 2 support and secure the sensors 9. The sensors 9 are used to detect the positions of the pistons in the first and second cylinders 1 and 2, and transmit the detection signals to the external controller via electrical signals.

[0018] like Figure 1 As described, in this embodiment, the first solenoid valve 3 is a five-port, three-position, dual-control solenoid valve. The A and B interfaces of the first solenoid valve 3 are respectively connected to the two pressure relief modules 5, and the P interface of the first solenoid valve 3 is connected to the external gas source device. It can be seen that the first solenoid valve 3 is a five-port, three-position, dual-control solenoid valve. The first solenoid valve 3 controls the high-pressure gas to enter through the P interface, and then the P interface is connected to the A or B interface respectively, pushing the first cylinder 1 to press down or the first cylinder 1 to rise, thereby controlling the movement of the first cylinder 1. Because the first cylinder 1 controls the fixture longitudinally, in order to play a protective role in the event of a power outage, a safer five-port, three-position, dual-control solenoid valve is used to protect the fixture and the product to be tested.

[0019] like Figure 1 In this embodiment, the third solenoid valve 52 is a five-port, two-position, single-control solenoid valve. The third solenoid valve 52 is connected to an external controller. The A port of the third solenoid valve 52 is connected to the first three-way valve 50, and the P port of the third solenoid valve 52 is in a closed state. Therefore, the P port of the third solenoid valve 52 is in a closed state. When the first solenoid valve 3 fails, the P port of the first solenoid valve 3 switches from the A port to the B port, and the external controller controls the third solenoid valve 52 to perform an exhaust action, preventing the first cylinder 1 from switching from a downward pressure action to an upward action or vice versa. When the first solenoid valve 3 is normal, the third solenoid valve 52 closes, allowing the first cylinder 1 to perform a normal upward or downward action. The third solenoid valve 52 acts as a switch in the air circuit.

[0020] like Figure 1 In this embodiment, the second solenoid valve 4 is a five-port, two-position, single-control solenoid valve. The A port of the second solenoid valve 4 is connected to the throttle speed control valve 7 near the reset end of the second cylinder 2. The B port of the second solenoid valve 4 is connected to the linkage module 6. The P port of the second solenoid valve 4 is connected to an external air source. Thus, the second solenoid valve 4 provides both a push and a reset for the second cylinder. Furthermore, the B port of the second solenoid valve 4 is connected to the linkage module 6, reinforcing the downward movement of the fixture by the first cylinder 1.

[0021] In this embodiment, the working principle of the utility model is as follows:

[0022] like Figure 1 As shown, test the product to be tested:

[0023] The first solenoid valve 3, the second solenoid valve 4, the third solenoid valve 52, and the sensor respectively cooperate with the electrical signals of the external controller. The external controller circuit board detects the signal of each sensor 9 to ensure that the initial position of the fixture is correct. The external controller controls the first solenoid valve 1 to connect the first air path 10 and the second air path 11, driving the first cylinder 1 to perform the fixture downward pressure action. The external controller circuit board detects the sensor signal in the first cylinder 1 to ensure that the fixture downward pressure is completed. The external controller circuit board controls the second solenoid valve 4 to connect the third air path 13, allowing the second cylinder 2 to perform the fixture horizontal push action. At the same time, the external controller circuit board also simultaneously connects the pipeline in the linkage module 6 to apply an additional compressed air channel to the first cylinder 1, acting on the first cylinder 1 to strengthen the control of the fixture downward pressure action. At this time, if the first solenoid valve 3 fails, resulting in the first air path 10 being cut off and the second air path 11 being ventilated, the fixture will not automatically rise uncontrollably because the third air path 12 still acts on the first cylinder 1, allowing the fixture to continue to maintain the downward pressure state, avoiding the risk of needle membrane damage. At this time, the third solenoid valve 52 on the first gas path 10 is in a closed state and will not affect the motion control of the fixture.

[0024] like Figure 1 As shown, the product test is completed:

[0025] After the test is completed, the external controller controls the second solenoid valve 4 to allow the fourth air path 13 to be ventilated and the third air path 12 to be deflated, so that the horizontal push structure and the needle membrane are reset. The external controller confirms that the horizontal push needle membrane is reset by collecting the signal of the sensor 9 on the second cylinder 2. The external controller controls the first solenoid valve 3 to cut off the first air path 10 and ventilate the second air path 11. The pressure relief module 5 on the first air path 10 is turned on, driving the first cylinder 1 to perform the fixture rising action.

[0026] Although the embodiments of the present invention are described with practical solutions, they do not limit the meaning of the present invention. For those skilled in the art, it is obvious to modify the implementation scheme and combine it with other solutions based on this description.

Claims

1. A multi-cylinder linkage control system, comprising a first cylinder (1), a second cylinder (2), a first solenoid valve (3) and a second solenoid valve (4), wherein a working end and a reset end of the first cylinder (1) are respectively connected to the first solenoid valve (3) through a pipeline to form a first air path (10) and a second air path (11), and a working end and a reset end of the second cylinder (2) are respectively connected to the second solenoid valve (4) through a pipeline to form a third air path (12) and a fourth air path (13), and an air inlet of the first solenoid valve (3) and the second solenoid valve (4) is connected to an external air source, characterized in that: A pressure relief module (5) and a linkage module (6) are provided on the first gas circuit (10) and the second gas circuit (11); the first gas circuit (10) is connected to and cooperates with the third gas circuit (12) via the linkage module (6).

2. A multi-cylinder linkage control system according to claim 1, characterized in that: The pressure relief module (5) comprises a first three-way valve (50), a first one-way valve (51) and a third solenoid valve (52); the first three-way valve (50) is respectively connected to the reset end of the first cylinder (1), the reverse port of the first one-way valve (51) and the third solenoid valve (52); the positive port of the first one-way valve (51) is connected to the first solenoid valve (3).

3. The multi-cylinder linkage control system according to claim 1, characterized in that: The linkage module (6) comprises a second three-way valve (60), a second one-way valve (61) and a third three-way valve (62), wherein the second three-way valve (60) is respectively connected to and cooperates with the working end of the first cylinder (1), the reverse port of the second one-way valve (61) and the pressure relief module (5), and the third three-way valve (62) is respectively connected to and cooperates with the working end of the second cylinder (2), the forward port of the second one-way valve (61) and the second solenoid valve (4).

4. The multi-cylinder linkage control system according to claim 1, characterized in that: The first gas path (10) and the second gas path (11) are provided with a throttle speed regulating valve (7) near the first cylinder (1), and the third gas path (12) and the fourth gas path (13) are both provided with a throttle speed regulating valve (7) near the second cylinder (2).

5. The multi-cylinder linkage control system according to claim 1, characterized in that: Sensors (9) are provided on the first cylinder (1) and the second cylinder (2) at locations close to the working end and the reset end, and the sensors (9) are connected and coordinated with an external controller via electrical signals.

6. The multi-cylinder linkage control system according to claim 1, characterized in that: The first solenoid valve (3) is a five-port, three-position, dual-control solenoid valve. The first solenoid valve (3) is connected to an external controller. The A and B interfaces of the first solenoid valve (3) are respectively connected to the two pressure relief modules (5). The P interface of the first solenoid valve (3) is connected to an external gas source device.

7. The multi-cylinder linkage control system according to claim 2, characterized in that: The third solenoid valve (52) is a five-port, two-position, single-control solenoid valve. The third solenoid valve (52) is connected to and cooperates with an external controller. The A interface of the third solenoid valve (52) is connected to and cooperates with the first three-way valve (50). The P interface of the third solenoid valve (52) is in a closed state.

8. The multi-cylinder linkage control system according to claim 4, characterized in that: The second solenoid valve (4) is a five-port, two-position, single-control solenoid valve. The second solenoid valve (4) is connected to an external controller. The A interface of the second solenoid valve (4) is connected to the throttling speed regulating valve (7) on the second cylinder (2) near the reset end. The B interface of the second solenoid valve (4) is connected to the linkage module (6). The P interface of the second solenoid valve (4) is connected to an external gas source device.

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