Pneumatic safety valve mounting device

Abstract

The utility model discloses a pneumatic safety valve installation device which comprises a vacuum device, an air pump and a linear driving device, the driving end of the linear driving device is connected with a sealing pipe, the bottom of the sealing pipe is communicated with a plurality of groups of containing pipes for containing safety valves, and limiting devices for limiting the height of the safety valves are arranged in the containing pipes. The air exhaust end of the vacuum device is connected with the sealing pipe through a first hose, and a first valve is arranged on the first hose. Compared with the prior art, the containing pipe can adsorb and fix the safety valve in a negative pressure state, and the containing pipe can cover the periphery of the acid filling port of the battery box body, so that the air pressure in the containing pipe is increased due to the working of the air pump, and the safety valve in the containing pipe is lowered under the action of the air pressure; therefore, the plurality of safety valves can be tightly matched with the plurality of acid injection ports under the action of air pressure, so that the sealing performance of the safety valves to the acid injection ports is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of battery safety valve installation, in particular to a pneumatic safety valve installation device. Background Art

[0002] During the production process of batteries, acid injection operations are required. There are multiple acid injection ports on the battery box. The acid injection ports are generally concave. After the acid is injected and charged, acid extraction operations are required. Then, a safety valve will be installed on the acid injection port.

[0003] When installing the safety valve, a suction cup is generally used to fix the safety valve, and then a manipulator is used to align the adsorbed safety valve with the acid injection port on the battery box body. Then, the adsorbed safety valve is driven down by components such as a cylinder until the safety valve is embedded in the acid injection port. In this installation method, the safety valve is installed by pressing down the cylinder. Since the top of the battery box body is made of plastic, its flatness itself has an error (the error is within 0.5 mm for qualified products), and the battery box body will also undergo certain deformation after being subjected to a large force in the previous steps, further resulting in multiple acid injection ports of different heights and a small drop. When the cylinder presses down the safety valve, the downward pressure distance only takes an intermediate value, which will cause some acid injection ports to be unable to fully cooperate with the safety valve, resulting in the possibility of battery leakage. Utility Model Content

[0004] The main purpose of the utility model is to provide a pneumatic safety valve installation device, wherein a housing tube can adsorb and fix the safety valve under negative pressure, and the housing tube can be covered on the periphery of the acid injection port of a battery box body. At this time, the air pressure inside the housing tube increases due to the operation of the air pump, so that the safety valve in the housing tube descends under the action of the air pressure until it enters the acid injection port of the battery box body, thereby enabling multiple safety valves to closely cooperate with the multiple acid injection ports under the action of the air pressure to ensure the sealing performance of the safety valve to the acid injection port.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A pneumatic safety valve installation device includes a vacuum device, an air pump and a linear drive device, wherein the driving end of the linear drive device is connected to a sealing tube, the bottom of the sealing tube is connected to multiple groups of accommodating tubes for accommodating safety valves, and a limit device for limiting the height of the safety valve is provided in the accommodating tube. The air extraction end of the vacuum device is connected to the sealing tube through a first hose and a first valve is provided on the first hose, and the air outlet end of the air pump is connected to the sealing tube through a second hose and a second valve is provided on the second hose.

[0007] Furthermore, the sealing tube includes a horizontal tube and a vertical tube, the horizontal tube and the vertical tube are connected and the vertical tube is vertically fixed at the center position of the horizontal tube, the second hose and the second hose are connected to the vertical tube, and multiple groups of the containing tubes are equidistantly connected to the horizontal tube.

[0008] Furthermore, the limiting device is a limiting ring, the outer side of the limiting ring is fixedly connected to the containing tube and the bottom of the limiting ring is fixedly connected to a sealing ring.

[0009] Furthermore, a suction cup is fixedly connected to the bottom of the accommodating tube.

[0010] Furthermore, the vacuum device is a vacuum pump, and the linear drive device is a pneumatic cylinder or a hydraulic cylinder.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The housing tube of the utility model can adsorb and fix the safety valve under negative pressure, and the housing tube can be covered on the periphery of the acid injection port of the battery box body. At this time, the air pressure inside the housing tube increases due to the operation of the air pump, so that the safety valve in the housing tube descends under the action of the air pressure until it enters the acid injection port of the battery box body, thereby enabling multiple safety valves to closely cooperate with the multiple acid injection ports under the action of the air pressure to ensure the sealing performance of the safety valve to the acid injection port.

[0013] The limiting device of the utility model can contact the bottom of the safety valve when the safety valve is located in the accommodating tube, thereby preventing the safety valve from continuing to rise under the action of negative pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is an overall schematic diagram of a pneumatic safety valve installation device.

[0015] Figure 2 The utility model is a schematic diagram of the connection between a cross pipe and a receiving pipe of a pneumatic safety valve installation device.

[0016] Figure 3 The utility model is a schematic diagram of the connection between a limit device and a sealing ring of a pneumatic safety valve installation device.

[0017] In the figure: 1. vacuum device; 2. linear drive device; 3. first valve; 4. first hose; 5. second hose; 6. second valve; 7. air pump; 8. sealing tube; 801. horizontal tube; 802. vertical tube; 9. containing tube; 10. suction cup; 11. limiting device; 12. sealing ring. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] like Figure 1-3 As shown, a pneumatic safety valve installation device includes a vacuum device 1, an air pump 7 and a linear drive device 2, the vacuum device 1 is a vacuum pump, the linear drive device 2 is a cylinder or a hydraulic cylinder, the driving end of the linear drive device 2 is connected to a sealing tube 8, the bottom of the sealing tube 8 is connected to multiple groups of accommodating tubes 9 for accommodating safety valves, and a limiting device 11 for limiting the height of the safety valve is arranged in the accommodating tube 9, the air extraction end of the vacuum device 1 is connected to the sealing tube 8 through a first hose 4 and a first valve 3 is arranged on the first hose 4, and the air outlet end of the air pump 7 is connected to the sealing tube 8 through a second hose 5 and a second valve 6 is arranged on the second hose 5.

[0020] In this embodiment, except for the first hose 4 and the second hose 5, the gas can only enter or flow out of the sealing tube 8 from the containing tube 9, and after the safety valve is located in the containing tube 9, it will closely contact the inner wall of the containing tube 9. At this time, the second valve 6 is closed and the first valve 3 is opened, so that when the vacuum device 1 is working, the gas in the sealing tube 8 can be extracted, so that negative pressure is formed inside the sealing tube 8, and then the safety valve is closely contacted with the limiting device 11, and the safety valve is fixed in the sealing tube 8 by the negative pressure;

[0021] When it is necessary to fix the safety valve to the acid injection port on the battery box body, the linear drive device 2 drives the sealing tube 8 to descend, so that the bottom opening of the accommodating tube 9 is covered outside the acid injection port of the battery box body. At this time, the vacuum device 1 stops working, closes the first valve 3, opens the second valve 6, and controls the air pump 7 to work, so that the air pump 7 inflates the sealing tube 8, and then the safety valve is embedded in the acid injection port of the battery box body under the action of air pressure.

[0022] Among them, Figure 1 and Figure 2 As shown, the sealing tube 8 includes a horizontal tube 801 and a vertical tube 802, the horizontal tube 801 and the vertical tube 802 are connected and the vertical tube 802 is vertically fixed at the center position of the horizontal tube 801, the second hose 5 and the second hose 5 are connected to the vertical tube 802, and multiple groups of containing tubes 9 are equidistantly connected to the horizontal tube 801, and the multiple groups of containing tubes 9 respectively correspond to the acid injection ports on the battery box body. Therefore, when the sealing tube 8 descends, the multiple groups of containing tubes 9 will be respectively covered on the periphery of the acid injection port of the battery box body to ensure that the safety valve in the containing tube 9 can be embedded in the acid injection port.

[0023] Among them, Figure 2 and Figure 3As shown, the limiting device 11 is a limiting ring, the outer side of the limiting ring is fixedly connected to the containing tube 9 and the bottom of the limiting ring is fixedly connected with a sealing ring 12. When the safety valve is located in the containing tube 9, its top will contact with the limiting ring, thereby preventing the safety valve from continuing to rise under the action of negative pressure. In this state, the bottom of the safety valve is at the same height as the bottom of the containing tube 9. After the limiting ring contacts the safety valve, the sealing ring 12 can improve the tightness of the connection between the two and avoid gas leakage.

[0024] Among them, Figure 2 As shown, a suction cup 10 is fixedly connected to the bottom of the accommodating tube 9. The suction cup 10 is a plastic suction cup. When the sealing tube 8 descends, the suction cup 10 will adsorb the outer periphery of the acid injection port of the paper battery box due to the force to avoid air leakage, thereby ensuring that the gas pushes the safety valve down until the safety valve enters the acid injection port.

[0025] Working principle: First, connect the linear drive device 2 to the manipulator of the production line. When the conveyor transports the battery box to the specified position, the manipulator drives the device to move above the safety valve to be used. At this time, the linear drive device 2 drives the sealing tube 8 to descend, thereby causing the receiving tube 9 to descend, so that multiple safety valves are respectively located in multiple receiving tubes 9. Then, the personnel controls the second valve 6 to close, the first valve 3 to open, and controls the vacuum device 1 to work, so as to extract the gas in the sealing tube 8, thereby forming a negative pressure inside the sealing tube 8, so that the safety valve is in close contact. The limiting device 11 uses negative pressure to fix the safety valve in the sealing tube 8. In the next step, the manipulator resets the device so that the safety valve in the receiving tube 9 is aligned with the acid injection port of the battery box body. At this time, the personnel controls the linear drive device 2 to drive the sealing tube 8 to descend, so that the bottom opening of the receiving tube 9 is covered outside the acid injection port of the battery box body. At this time, the vacuum device 1 stops working, closes the first valve 3, opens the second valve 6, and controls the air pump 7 to work, so that the air pump 7 inflates the sealing tube 8, and then the safety valve is embedded in the acid injection port of the battery box body under the action of air pressure.

[0026] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A pneumatic safety valve installation device, comprising a vacuum device (1), an air pump (7) and a linear drive device (2), characterized in that: The driving end of the linear drive device (2) is connected to a sealing tube (8), the bottom of the sealing tube (8) is connected to a plurality of groups of accommodating tubes (9) for accommodating safety valves, and a limit device (11) for limiting the height of the safety valve is arranged in the accommodating tube (9). The air extraction end of the vacuum device (1) is connected to the sealing tube (8) via a first hose (4), and the first hose (4) is provided with a first valve (3). The air outlet end of the air pump (7) is connected to the sealing tube (8) via a second hose (5), and the second hose (5) is provided with a second valve (6).

2. A pneumatic safety valve installation device according to claim 1, characterized in that: The sealing tube (8) comprises a horizontal tube (801) and a vertical tube (802), wherein the horizontal tube (801) and the vertical tube (802) are connected and the vertical tube (802) is vertically fixed at the center of the horizontal tube (801), the second hose (5) and the second hose (5) are connected to the vertical tube (802), and a plurality of groups of the containing tubes (9) are equidistantly connected to the horizontal tube (801).

3. A pneumatic safety valve installation device according to claim 1 or 2, characterized in that: The limiting device (11) is a limiting ring, the outer side of the limiting ring is fixedly connected to the containing tube (9) and the bottom of the limiting ring is fixedly connected to a sealing ring (12).

4. A pneumatic safety valve installation device according to claim 3, characterized in that: A suction cup (10) is fixedly connected to the bottom of the accommodation tube (9).

5. A pneumatic safety valve installation device according to claim 3, characterized in that: The vacuum device (1) is a vacuum pump, and the linear drive device (2) is a cylinder or a hydraulic cylinder.

Images