Airtightness detection equipment for explosion-proof valve

Abstract

The utility model provides airtight detection equipment for an explosion-proof valve. The airtight detection equipment comprises a case, and a feeding conveying belt mechanism, an OK blanking conveying belt mechanism, an NG blanking conveying belt mechanism, a first carrying manipulator, an airtight detection mechanism, a second carrying manipulator and a material storage and collection mechanism which are mounted on the case, the first carrying manipulator is used for carrying the explosion-proof valve at the right end of the feeding conveying belt mechanism to the airtightness detection mechanism and carrying the explosion-proof valve detected in the airtightness detection mechanism to the front end of the NG discharging conveying belt mechanism or the left end of the OK discharging conveying belt mechanism according to a detection result. The stored material collecting mechanism is arranged on the rear side of the OK discharging conveying belt mechanism and used for collecting the anti-explosion valves for detecting OK; the second carrying mechanical arm is arranged on the right side of the OK discharging conveying belt mechanism and the right side of the material storage and collection mechanism and used for carrying the anti-explosion valve at the right end of the OK discharging conveying belt mechanism to the material storage and collection mechanism, the working procedures of feeding, airtightness detection and classified conveying of the anti-explosion valve and storage and placement of OK materials can be automatically completed, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof valve processing technology, and in particular to an explosion-proof valve airtightness testing device. Background Technology

[0002] During the processing of explosion-proof valves, various performance tests are required, including airtightness testing to check whether the explosion-proof valve will leak air. In the past, it was necessary to manually place each explosion-proof valve on an airtightness testing fixture, clamp it in place, ventilate it, and test whether the product was qualified before classifying and storing it. This method is inefficient and cannot meet the processing requirements, so it needs to be improved. Utility Model Content

[0003] The purpose of this invention is to provide an explosion-proof valve airtightness testing device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An explosion-proof valve airtightness testing device includes a chassis and a feeding conveyor belt mechanism, an OK unloading conveyor belt mechanism, an NG unloading conveyor belt mechanism, a first handling robot, an airtightness testing mechanism, a second handling robot, and a material storage and collection mechanism installed on the chassis.

[0006] The loading conveyor belt mechanism, the first handling robot, and the OK unloading conveyor belt mechanism are arranged sequentially from left to right; the NG unloading conveyor belt mechanism is arranged longitudinally behind the first handling robot.

[0007] The airtightness testing mechanism is located on the left side of the NG unloading conveyor belt mechanism and is used to receive the explosion-proof valve and test the airtightness of the explosion-proof valve.

[0008] The left end of the feeding conveyor belt mechanism is connected to an explosion-proof valve and controls the explosion-proof valve to convey to the right;

[0009] The first handling robot is used to move the explosion-proof valve at the right end of the loading conveyor belt mechanism to the air tightness testing mechanism, and to move the explosion-proof valve that has been tested in the air tightness testing mechanism to the front end of the NG unloading conveyor belt mechanism or the left end of the OK unloading conveyor belt mechanism according to the test results.

[0010] The NG unloading conveyor belt mechanism is used to control the explosion-proof valve to be conveyed backward;

[0011] The OK unloading conveyor belt mechanism is used to control the explosion-proof valve to be conveyed to the right.

[0012] The material collection mechanism is located behind the OK unloading conveyor belt mechanism and is used to collect the explosion-proof valves that detect OK.

[0013] The second handling robot is located on the right side of the OK unloading conveyor belt mechanism and the storage and collection mechanism, and is used to transport the explosion-proof valve at the right end of the OK unloading conveyor belt mechanism to the storage and collection mechanism.

[0014] Further description of this utility model: the feeding conveyor belt mechanism includes a first mounting frame, a conveyor belt, a conveyor belt drive device, a right limit block, and a clamping cylinder; the first mounting frame is fixed on the chassis; both ends of the conveyor belt are mounted on the first mounting frame via rotating shafts; the conveyor belt drive device is mounted on the first mounting frame and its power output end is connected to one of the rotating shafts; the right limit block is fixed to the right end of the first mounting frame; the clamping cylinder is mounted on the right end of the first mounting frame and is used to clamp and position the explosion-proof valve.

[0015] As further described in this utility model, the structure of the OK unloading conveyor belt mechanism is the same as that of the loading conveyor belt mechanism.

[0016] In a further description of this utility model, a CCD imaging device is provided on the right front side of the feeding conveyor belt mechanism.

[0017] Further description of this utility model: the airtightness testing mechanism includes a second mounting frame, a slide block, a Y-axis drive cylinder, a gantry frame, a first Z-axis drive cylinder, a sealing cover, and a testing instrument; the second mounting frame is fixed to the chassis; the slide block is slidably connected to the second mounting frame; a first air hole is provided in the middle of the slide block; two positioning pins are provided on the slide block; a second air hole communicating with the first air hole is provided on one side of the slide block; the Y-axis drive cylinder is mounted on the second mounting frame and its power output end is connected to the slide block; the gantry frame is mounted horizontally across the rear and above the second mounting frame; the first Z-axis drive cylinder is mounted on the gantry frame and its power output end is connected to the sealing cover; the testing instrument is connected to the second air hole through an air pipe; the testing instrument is used to supply gas and detect air pressure.

[0018] Further description of this utility model: the first handling robot includes a mounting plate, a slide, a second Z-axis drive cylinder, a first rotary drive device, a swinging component, and a handling assembly; the mounting plate is fixed to the chassis; the slide includes a base plate, a guide rod, and a top plate; the base plate is located below the mounting plate, and the top plate is located above the mounting plate; the guide rod connects the base plate and the top plate and is slidably connected to the mounting plate via a guide sleeve; the second Z-axis drive cylinder is mounted on the base plate and its power output end is connected to the mounting plate; the first rotary drive device is mounted on the top plate; the swinging component has a V-shaped structure and includes components fixed to the rotary drive device. The power output end has a fixed part, and two swing arms are connected to both sides of the fixed part; the conveying assembly is provided in two sets and is respectively installed at the outer ends of the two swing arms; the conveying assembly includes a first suction head, a connecting plate and two positioning posts; the first suction head is fixed to the bottom of the swing arm; the middle of the connecting plate is provided with a clearance hole for the first suction head to pass through; the connecting plate is fixed to the bottom of the swing arm; the two sides of the connecting plate are provided with outwardly extending connecting parts; the two positioning posts are respectively fixed to the bottom of the two connecting parts; the bottom of the positioning post is provided with a downwardly protruding positioning protrusion; the upper end of the positioning pin is provided with a positioning groove that cooperates with the positioning protrusion.

[0019] Further description of this utility model: the second handling robot includes a third mounting frame, a Y-axis drive device, an X-axis drive device, a Z-axis drive device, a second rotary drive device, and a second suction head; the third mounting frame is fixed on the chassis; the Y-axis drive device is mounted on the third mounting frame and its power output end is connected to the X-axis drive device; the Z-axis drive device is mounted on the power output end of the X-axis drive device; the second rotary drive device is mounted on the power output end of the Z-axis drive device; the power output end of the second rotary drive device is connected to the second suction head, used to control the second suction head to rotate around the Z-axis.

[0020] Further description of this utility model: the material collection mechanism includes several material trays, two sets of lifting and stacking devices distributed on the left and right, and a third handling robot arm disposed on the rear side of the two sets of lifting and stacking devices; the lifting and stacking device includes two limiting baffles distributed on the left and right, a lifting drive assembly disposed on the front side between the two limiting baffles, and a support plate located between the two limiting baffles and connected to the power output end of the lifting drive assembly; the material trays are provided with several placement slots; the material trays are used to place on the support plate.

[0021] The beneficial effects of this utility model are as follows:

[0022] This design can fully automate the processes of feeding, airtightness testing, sorting and unloading, and collecting OK materials for explosion-proof valves, significantly improving work efficiency. Furthermore, the first handling robot is positioned between the feeding conveyor belt mechanism, the NG unloading conveyor belt mechanism, the OK unloading conveyor belt mechanism, and the airtightness testing mechanism. It controls the transport of explosion-proof valves from the feeding conveyor belt mechanism to the airtightness testing mechanism, and transports the explosion-proof valves that have completed the airtightness testing to the NG unloading conveyor belt mechanism or the OK unloading conveyor belt mechanism based on the test results, thereby improving efficiency and reducing costs. Attached Figure Description

[0023] Figure 1 This is an overall structural diagram of the present invention;

[0024] Figure 2 This is a structural diagram of the feeding conveyor belt mechanism and CCD imaging device of this utility model;

[0025] Figure 3 This is a partial structural diagram of the airtightness testing mechanism of this utility model;

[0026] Figure 4 This is a structural diagram of the slide block of this utility model;

[0027] Figure 5 This is a structural diagram of the first handling robot of this utility model;

[0028] Figure 6 This is a structural diagram of the second handling robot of this utility model;

[0029] Figure 7 This is a structural diagram of the material storage and collection mechanism of this utility model. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings:

[0031] like Figure 1 As shown, an explosion-proof valve airtightness testing device includes a housing 1 and a feeding conveyor belt mechanism 2, an OK unloading conveyor belt mechanism 3, an NG unloading conveyor belt mechanism 4, a first handling robot 5, an airtightness testing mechanism 6, a second handling robot 7, and a storage and collection mechanism 8 installed on the housing 1.

[0032] The loading conveyor belt mechanism 2, the first handling robot 5, and the OK unloading conveyor belt mechanism 3 are arranged sequentially from left to right; the NG unloading conveyor belt mechanism 4 is arranged longitudinally behind the first handling robot 5.

[0033] like Figure 2As shown, the left end of the feeding conveyor belt mechanism 2 is connected to the explosion-proof valve and controls the explosion-proof valve to be conveyed to the right; the NG unloading conveyor belt mechanism 4 is used to control the explosion-proof valve to be conveyed backward; and the OK unloading conveyor belt mechanism 3 is used to control the explosion-proof valve to be conveyed to the right.

[0034] The feeding conveyor belt mechanism 2 includes a first mounting frame 21, a conveyor belt 22, a conveyor belt drive device 23, a right limit block 24, and a clamping cylinder 25. The first mounting frame 21 is fixed on the housing 1. The two ends of the conveyor belt 22 are mounted on the first mounting frame 21 via rotating shafts. The conveyor belt drive device 23 is mounted on the first mounting frame 21 and its power output end is connected to one of the rotating shafts. The right limit block 24 is fixed to the right end of the first mounting frame 21. The clamping cylinder 25 is mounted on the right end of the first mounting frame 21 and is used to clamp and position the explosion-proof valve. After the explosion-proof valve is clamped and positioned by the clamping cylinder 25, it is ready for the first handling robot 5 to pick up the material.

[0035] The structure of the OK unloading conveyor belt mechanism 3 is the same as that of the loading conveyor belt mechanism 2. After the OK detection explosion-proof valve is conveyed to the right end and clamped and positioned, it prepares for the second handling robot 7 to pick up the material.

[0036] Defective products conveyed to the rear end of the NG unloading conveyor belt mechanism 4 do not require clamping or positioning and can be directly removed manually.

[0037] In this design, a CCD imaging device 9 is provided on the right front side of the feeding conveyor belt mechanism 2. The CCD imaging device 9 detects whether the product flow position is accurate. If the product position is inaccurate, the equipment will issue an alarm to remind the staff to tidy up.

[0038] like Figure 1 , 3 As shown in Figure 4, the airtightness testing mechanism 6 is located on the left side of the NG unloading conveyor belt mechanism 4, and is used to pick up the explosion-proof valve and test the airtightness of the explosion-proof valve.

[0039] The airtightness testing mechanism 6 includes a second mounting frame 61, a slide block 62, a Y-axis drive cylinder 63, a gantry frame 64, a first Z-axis drive cylinder 65, a sealing cover 66, and a testing instrument 67. The second mounting frame 61 is fixed to the housing 1. The slide block 62 is slidably connected to the second mounting frame 61. A first air hole 621 is provided in the middle of the slide block 62. Two positioning pins 622 are provided on the slide block 62. A second air hole 622 communicating with the first air hole 621 is provided on one side of the slide block 62. The Y-axis drive cylinder 63 is mounted on the second mounting frame 61 and its power output end is connected to the slide block 62. The gantry frame 64 is mounted horizontally above and behind the second mounting frame 61. The first Z-axis drive cylinder 65 is mounted on the gantry frame 64 and its power output end is connected to the sealing cover 66. The testing instrument 67 is connected to the second air hole 622 through an air pipe. The testing instrument 67 is used to supply gas and detect the gas. The Y-axis drive cylinder 63 controls the slide block 62 to move forward to pick up the explosion-proof valve. The explosion-proof valve is placed on the slide block 62. The explosion-proof valve has round holes on both sides. The positioning pin 622 extends into the round holes to position the explosion-proof valve. After picking up the explosion-proof valve, the Y-axis drive cylinder 63 controls the slide block 62 to move backward to below the sealing cover 66. Then, the first Z-axis drive cylinder 65 controls the sealing cover 66 to move downward. The sealing cover 66 abuts against the top of the explosion-proof valve. The detection instrument 67 supplies gas. The gas enters through the pipe from the second air hole 622 and enters the bottom of the explosion-proof valve through the first air hole 621. The detection device detects whether the pressure of the supplied gas changes. If the pressure changes, it indicates that there is gas leakage in the explosion-proof valve and the airtightness is insufficient. If the gas pressure does not change, the airtightness meets the standard. After the test is completed, the first Z-axis drive cylinder 65 controls the sealing cover 66 to reset, and the Y-axis drive cylinder 63 controls the slide block 62 to move forward to prepare for unloading the explosion-proof valve after the test.

[0040] like Figure 5As shown, the first handling robot 5 is used to transport the explosion-proof valve at the right end of the loading conveyor belt mechanism 2 to the airtightness testing mechanism 6, and to transport the explosion-proof valve that has been tested in the airtightness testing mechanism 6 to the front end of the NG unloading conveyor belt mechanism 4 or the left end of the OK unloading conveyor belt mechanism 3 according to the test results; the first handling robot 5 includes a mounting plate 51, a slide 52, a second Z-axis drive cylinder 53, a first rotary drive device 54, a swinging component 55, and a handling assembly 56; the mounting plate 51 is fixed on the chassis 1; the slide 52 includes a base plate 521, a guide rod 522, and a top plate 523; the base plate 521 is located below the mounting plate 51, and the top plate 523 is located below the mounting plate 51. 23 is located above the mounting plate 51; the guide rod 522 is connected between the bottom plate 521 and the top plate 523 and is slidably connected to the mounting plate 51 through the guide sleeve 511; the second Z-axis drive cylinder 53 is mounted on the bottom plate 521 and its power output end is connected to the mounting plate 51; the first rotary drive device 54 is mounted on the top plate 523; the swing member 55 has a V-shaped structure, including a fixed part 551 fixed to the power output end of the rotary drive device, and two swing arms 552 connected to both sides of the fixed part 551; the conveying assembly 56 is provided in two sets and is respectively installed on the outer ends of the two swing arms 552; the conveying assembly 56 includes a first suction head 5 61. A connecting plate 562 and two positioning posts 563; the first suction head 561 is fixed to the bottom of the swing arm 552; the middle of the connecting plate 562 is provided with a clearance hole for the first suction head 561 to pass through; the connecting plate 562 is fixed to the bottom of the swing arm 552; the two sides of the connecting plate 562 are provided with outwardly extending connecting portions 5621; the two positioning posts 563 are respectively fixed to the bottom of the two connecting portions 5621; the bottom of the positioning post 563 is provided with a downwardly protruding positioning protrusion 5631; the upper end of the positioning pin 622 is provided with a positioning groove 6221 that cooperates with the positioning protrusion 5631; the second Z-axis drive cylinder 53 and the first rotary drive The device 54 controls the position of two sets of conveying components 56 to move the explosion-proof valve. The conveying component 56 installed on the front swing arm 552 is used to pick up the material from the feeding conveyor belt mechanism 2 and move it to the airtightness testing mechanism 6. The conveying component 56 installed on the rear swing arm 552 is used to take out the explosion-proof valve that has completed the test from the airtightness testing mechanism 6 and move it to the OK unloading conveyor belt mechanism 3 or the NG unloading conveyor belt mechanism 4. The positioning pin 563 in the conveying component 56 is used to insert into the round hole of the explosion-proof valve to position the product. The bottom is provided with a positioning protrusion 5631, which is used to cooperate with the positioning groove 6221 of the positioning pin 622 to improve the positioning accuracy when picking up and unloading materials.

[0041] The material collection mechanism 8 is located on the rear side of the OK unloading conveyor belt mechanism 3 and is used to collect the explosion-proof valves that detect OK.

[0042] like Figure 6As shown, the second handling robot 7 is located on the right side of the OK unloading conveyor belt mechanism 3 and the storage and collection mechanism 8, and is used to transport the explosion-proof valve at the right end of the OK unloading conveyor belt mechanism 3 to the storage and collection mechanism 8.

[0043] The second handling robot 7 includes a third mounting frame 71, a Y-axis drive device 72, an X-axis drive device 73, a Z-axis drive device 74, a second rotary drive device 75, and a second suction head 76. The third mounting frame 71 is fixed on the housing 1. The Y-axis drive device 72 is mounted on the third mounting frame 71 and its power output end is connected to the X-axis drive device 73. The Z-axis drive device 74 is mounted on the power output end of the X-axis drive device 73. The second rotary drive device 75 is mounted on the power output end of the Z-axis drive device 74. The power output end of the second rotary drive device 75 is connected to the second suction head 76, which is used to control the second suction head 76 to rotate around the Z-axis. The movement of the second suction head 76 is controlled by the linkage of the Y-axis drive device 72, the X-axis drive device 73, the Z-axis drive device 74, and the second rotary drive device 75. The second suction head 76 picks up material from the right end of the OK unloading conveyor belt mechanism 3 and places it in the storage and collection mechanism 8.

[0044] like Figure 7 As shown, the material collection mechanism 8 includes several material trays 81, two sets of lifting and stacking devices 82 distributed on the left and right, and a third handling robot 83 disposed behind the two sets of lifting and stacking devices 82; the lifting and stacking device 82 includes two limiting baffles 821 distributed on the left and right, a lifting drive assembly 822 disposed between the two limiting baffles 821 and in front, and a support plate 823 located between the two limiting baffles 821 and connected to the power output end of the lifting drive assembly 822. In this design, the support plate 823 is slidably connected to the power output end of the lifting drive assembly 822 through a guide rail pair. After being pulled backward, the material trays 81 can be placed and removed; the material trays 81 are provided with several placement slots 811; the material trays 81... 1 is used to place on pallet 823, wherein multiple empty material trays 81 are stacked in the left lifting and stacking device 82. The third handling robot 83 is used to transport the empty material trays 81 in the left lifting and stacking device 82 to the right lifting and stacking device 82. After the uppermost material tray 81 in the right lifting and stacking device 82 is filled with OK material, the next empty material tray 81 is transported. Each time an empty material tray 81 is taken out in the left lifting and stacking device 82, the lifting drive device controls the pallet 823 to rise by the height of one material tray 81. Before placing an empty material tray 81 in the right lifting and stacking device 82, the lifting drive device controls the pallet 823 to fall by the height of one material tray 81 to prepare for the placement of the empty material tray 81.

[0045] The above description does not limit the technical scope of this invention. Any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this invention shall still fall within the scope of the technical solution of this invention.

Claims

1. An explosion-proof valve airtightness testing device, characterized in that: It includes a chassis and a feeding conveyor belt mechanism, an OK unloading conveyor belt mechanism, an NG unloading conveyor belt mechanism, a first handling robot, an airtightness detection mechanism, a second handling robot, and a material storage and collection mechanism mounted on the chassis; The loading conveyor belt mechanism, the first handling robot, and the OK unloading conveyor belt mechanism are arranged sequentially from left to right; the NG unloading conveyor belt mechanism is arranged longitudinally behind the first handling robot. The airtightness testing mechanism is located on the left side of the NG unloading conveyor belt mechanism and is used to receive the explosion-proof valve and test the airtightness of the explosion-proof valve. The left end of the feeding conveyor belt mechanism is connected to an explosion-proof valve and controls the explosion-proof valve to convey to the right; The first handling robot is used to move the explosion-proof valve at the right end of the loading conveyor belt mechanism to the air tightness testing mechanism, and to move the explosion-proof valve that has been tested in the air tightness testing mechanism to the front end of the NG unloading conveyor belt mechanism or the left end of the OK unloading conveyor belt mechanism according to the test results. The NG unloading conveyor belt mechanism is used to control the explosion-proof valve to be conveyed backward; The OK unloading conveyor belt mechanism is used to control the explosion-proof valve to be conveyed to the right. The material collection mechanism is located behind the OK unloading conveyor belt mechanism and is used to collect the explosion-proof valves that detect OK. The second handling robot is located on the right side of the OK unloading conveyor belt mechanism and the storage and collection mechanism, and is used to transport the explosion-proof valve at the right end of the OK unloading conveyor belt mechanism to the storage and collection mechanism.

2. The explosion-proof valve airtightness testing device according to claim 1, characterized in that: The feeding conveyor belt mechanism includes a first mounting frame, a conveyor belt, a conveyor belt drive device, a right limit block, and a clamping cylinder; the first mounting frame is fixed on the chassis; both ends of the conveyor belt are mounted on the first mounting frame via rotating shafts; the conveyor belt drive device is mounted on the first mounting frame and its power output end is connected to one of the rotating shafts; the right limit block is fixed to the right end of the first mounting frame; the clamping cylinder is mounted on the right end of the first mounting frame and is used to clamp and position the explosion-proof valve.

3. The explosion-proof valve airtightness testing device according to claim 2, characterized in that: The structure of the OK unloading conveyor belt mechanism is the same as that of the loading conveyor belt mechanism.

4. The explosion-proof valve airtightness testing device according to claim 2, characterized in that: A CCD camera is installed on the right front side of the feeding conveyor belt mechanism.

5. The explosion-proof valve airtightness testing device according to claim 1, characterized in that: The airtightness testing mechanism includes a second mounting bracket, a slide block, a Y-axis drive cylinder, a gantry frame, a first Z-axis drive cylinder, a sealing cover, and a testing instrument. The second mounting bracket is fixed to the chassis. The slide block is slidably connected to the second mounting bracket. A first air hole is provided in the middle of the slide block. Two positioning pins are provided on the slide block. A second air hole communicating with the first air hole is provided on one side of the slide block. The Y-axis drive cylinder is mounted on the second mounting bracket and its power output end is connected to the slide block. The gantry frame is mounted horizontally above and behind the second mounting bracket. The first Z-axis drive cylinder is mounted on the gantry frame and its power output end is connected to the sealing cover. The testing instrument is connected to the second air hole through an air pipe. The testing instrument is used to supply gas and detect air pressure.

6. The explosion-proof valve airtightness testing device according to claim 5, characterized in that: The first handling robot includes a mounting plate, a carriage, a second Z-axis drive cylinder, a first rotary drive device, a swinging component, and a handling assembly. The mounting plate is fixed to the chassis. The carriage includes a base plate, a guide rod, and a top plate. The base plate is located below the mounting plate, and the top plate is located above the mounting plate. The guide rod connects the base plate and the top plate and is slidably connected to the mounting plate via a guide sleeve. The second Z-axis drive cylinder is mounted on the base plate, and its power output end is connected to the mounting plate. The first rotary drive device is mounted on the top plate. The swinging component has a V-shaped structure and includes a fixed component on the power output end of the rotary drive device. The device comprises a fixed part and two swing arms connected to both sides of the fixed part; the conveying assembly is provided in two sets and is respectively installed at the outer ends of the two swing arms; the conveying assembly includes a first suction head, a connecting plate and two positioning posts; the first suction head is fixed to the bottom of the swing arm; the middle of the connecting plate is provided with a clearance hole for the first suction head to pass through; the connecting plate is fixed to the bottom of the swing arm; the two sides of the connecting plate are provided with outwardly extending connecting parts; the two positioning posts are respectively fixed to the bottom of the two connecting parts; the bottom of the positioning post is provided with a downwardly protruding positioning protrusion; the upper end of the positioning pin is provided with a positioning groove that cooperates with the positioning protrusion.

7. The explosion-proof valve airtightness testing device according to claim 1, characterized in that: The second handling robot includes a third mounting frame, a Y-axis drive device, an X-axis drive device, a Z-axis drive device, a second rotary drive device, and a second suction head; the third mounting frame is fixed to the chassis; the Y-axis drive device is mounted on the third mounting frame and its power output end is connected to the X-axis drive device; the Z-axis drive device is mounted on the power output end of the X-axis drive device; The second rotary drive device is installed at the power output end of the Z-axis drive device; The power output end of the second rotary drive device is connected to the second adsorption head, which is used to control the second adsorption head to rotate around the Z-axis.

8. The explosion-proof valve airtightness testing device according to claim 1, characterized in that: The material storage and collection mechanism includes several material trays, two sets of lifting and stacking devices distributed on the left and right, and a third handling robot arm disposed behind the two sets of lifting and stacking devices; the lifting and stacking device includes two limiting baffles distributed on the left and right, a lifting drive assembly disposed between the two limiting baffles and in front, and a support plate located between the two limiting baffles and connected to the power output end of the lifting drive assembly; the material trays are provided with several placement slots; the material trays are used to place on the support plate.

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