Multi-station copper pipe full-automatic airtightness detection equipment

Abstract

The utility model provides a kind of full-automatic air-tightness detection equipment of multi-station copper pipe: including workbench and set on workbench's feeding mechanism, taking and placing mechanism and air-tightness detection mechanism;Air-tightness detection mechanism includes air-tightness detection seat, and air-tightness detection seat is equipped with and the accommodation groove that copper pipe shape is matched and top is open end, the top of air-tightness detection seat is open and is connected with sealing cover plate, and sealing cover plate is connected with air pressure sensor towards the end surface of accommodation groove, for detecting the air pressure in accommodation groove;Air-tightness detection seat is equipped with several sealing components corresponding with copper pipe port one to one, and sealing component is used to block corresponding copper pipe port;One of sealing components is equipped with the inflation passage that connects outside air source and copper pipe inner chamber, for inflating to copper pipe inner chamber;After being thus arranged, when the gas in copper pipe leaks, the pressure change in accommodation groove is more obvious, and the sealing property of copper pipe can be accurately detected, guarantee product quality.

Description

Technical Field

[0001] This utility model relates to the technical field of airtightness testing equipment, specifically a multi-station fully automatic airtightness testing equipment for copper pipes. Background Technology

[0002] Copper pipes require airtightness testing during production to determine if they are damaged. Existing airtightness testing equipment requires placing the product into a sealed testing chamber, injecting high-pressure gas, and then observing the changes in pressure sensor or differential pressure sensor readings after a period of time to determine the product's airtightness.

[0003] However, when tiny gaps appear in the copper tube, gas can slowly enter the inner cavity. Since the sealing detection chamber is relatively large compared to the inner cavity of the copper tube, the pressure change within the chamber is extremely slight, making it easy for the sensor to fail to detect the gas, resulting in insufficient detection accuracy. For copper tubes with high sealing requirements, product quality is difficult to guarantee. Furthermore, existing copper tube airtightness testing methods are mostly single-unit tests, leading to low detection efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a multi-station fully automatic airtightness testing device for copper pipes with high detection accuracy.

[0005] The technical solution of this utility model is to provide a multi-station fully automatic copper tube airtightness testing device with the following structure:

[0006] It includes a workbench and a feeding mechanism, a pick-and-place mechanism and an airtightness testing mechanism set on the workbench; the feeding mechanism is used to transport the copper tube to be tested to the pick-and-place mechanism, and the pick-and-place mechanism is used to move the copper tube transported by the feeding mechanism to the airtightness testing mechanism, and then remove the copper tube after the airtightness testing mechanism has completed the test.

[0007] The airtightness testing mechanism includes an airtightness testing seat, which has a receiving groove that matches the shape of the copper tube and has an open top. The top of the airtightness testing seat is connected to a sealing cover that can be opened. A pressure sensor is connected to one end of the sealing cover facing the receiving groove to detect the air pressure in the receiving groove. The airtightness testing seat has several sealing components that correspond one-to-one with the copper tube ports. The sealing components are used to seal the corresponding copper tube ports. One of the sealing components has an inflation channel that connects an external air source to the inner cavity of the copper tube for inflating the inner cavity of the copper tube.

[0008] With the above structure, the multi-station fully automatic copper tube airtightness testing equipment of this utility model has the following advantages compared with the prior art:

[0009] This invention seals the copper tube port with a sealing component, then inflates the inner cavity of the copper tube through an inflation channel. After a period of time, the pressure change in the containment tank is observed using a pressure sensor. Since the gas is directly injected into the inner cavity of the copper tube, and the containment tank is matched with the copper tube, the pressure change in the containment tank is more obvious when the gas leaks out of the copper tube. This allows for accurate detection of the copper tube's sealing performance and ensures product quality.

[0010] Preferably, the airtightness testing mechanism includes a testing bracket and a testing drive unit. The testing bracket is mounted on the workbench, and the testing drive unit is connected to the testing bracket. The output end of the testing drive unit is connected to the sealing cover plate and is used to drive the sealing cover plate to move vertically up and down to open or close the receiving groove.

[0011] Preferably, the sealing assembly includes a sealing drive unit, a sealing push rod, and a sealing plate. The airtightness testing seat has several through holes that correspond one-to-one with the sealing assembly and penetrate the side wall of the airtightness testing seat. The sealing drive unit is connected to the outer side wall of the airtightness testing seat. One end of the sealing push rod is connected to the output end of the sealing drive unit, and the other end passes through the corresponding through hole and is connected to the sealing plate. The sealing push rod can slide along the extension direction of the through hole and seals with the through hole. The sealing drive unit is used to drive the sealing push rod to move horizontally along the corresponding through hole, thereby causing the sealing plate to block or open the corresponding copper pipe port.

[0012] Preferably, the inflation channel is disposed on one of the sealing push rods, and one end of the inflation channel passes through the corresponding sealing sheet to connect the inner cavity of the copper tube.

[0013] Preferably, a lever assembly is provided between one of the sealing drive units and the sealing push rod. The two ends of the lever assembly are connected to the sealing drive unit and the sealing push rod, respectively. The lever assembly includes a first lever and a second lever. One end of the first lever is hinged to the sealing push rod, and the other end is hinged to the upper end of the second lever. The upper middle part of the second lever is hinged to the outer wall of the airtightness detection seat, and the lower end of the second lever is hinged to the output end of the sealing drive unit. This allows the sealing drive unit to output a greater force.

[0014] Preferably, the feeding mechanism includes a vibrating feeding plate, a feeding conveyor belt, and a position adjustment component mounted on the worktable. One end of the feeding conveyor belt is connected to the discharge port of the vibrating feeding plate, and the position adjustment component is disposed between the vibrating feeding plate and the feeding conveyor belt. The vibrating feeding plate is used to convey copper tubes to the feeding conveyor belt, and the position adjustment component is used to adjust the position and spacing of the copper tubes on the feeding conveyor belt to facilitate the picking and placing mechanism to clamp the copper tubes.

[0015] Preferably, the position adjustment component includes a position adjustment bracket, a first spacing adjustment cylinder, a second spacing adjustment cylinder, and a position adjustment cylinder. The position adjustment bracket is set on the workbench, and the first spacing adjustment cylinder, the position adjustment cylinder, and the second spacing adjustment cylinder are sequentially set on the position adjustment bracket along the transmission direction of the feeding conveyor belt. The spacing between the first spacing adjustment cylinder and the second spacing adjustment cylinder is not less than the width of the copper tube. A sensor is installed on one side of the first spacing adjustment cylinder to detect whether a copper tube is passing by. When the copper tube conveyed by the vibrating feeding tray passes the second spacing adjustment cylinder, the jaws on the second spacing adjustment cylinder will move down to block the movement of the copper tube. Then, the position adjustment cylinder will drive its two jaws to move towards each other, moving the copper tube to the middle position of the feeding conveyor belt. Then, the jaws on the second spacing adjustment cylinder will reset, and the copper tube will be conveyed along the feeding conveyor belt. During this process, the first spacing adjustment cylinder will drive its jaws to move down to lock the second copper tube, preventing the second copper tube from moving with the first copper tube. Then, the jaws on the second spacing adjustment cylinder will move down, and the jaws on the first spacing adjustment cylinder will reset. At this time, the second copper tube is located below the position adjustment cylinder. The position adjustment cylinder adjusts the position of the second copper tube. After the first copper tube moves to the set distance, the jaws on the second spacing adjustment cylinder will reset, allowing the second copper tube to move along the feeding conveyor belt. The above steps are repeated to ensure that the position and spacing of the copper tubes on the feeding conveyor belt are the same.

[0016] Preferably, the picking and placing mechanism includes a picking and placing bracket mounted on a workbench. The picking and placing bracket has a horizontal slide rail perpendicular to the conveying direction of the feeding conveyor belt. A horizontal drive assembly is slidably connected to the horizontal slide rail. One end of the horizontal drive assembly is connected to a plurality of first vertical drive assemblies spaced apart along the conveying direction of the feeding conveyor belt. The other end of the horizontal drive assembly is connected to a plurality of second vertical drive assemblies corresponding one-to-one with the first vertical drive assemblies. Multiple airtightness testing seats are also provided, each corresponding one-to-one with a first vertical drive assembly. A discharge conveyor belt parallel to the feeding conveyor belt is provided on the workbench. The spacing between the conveyor belt and the unloading conveyor belt is the same as the spacing between the first vertical drive assembly and the second vertical drive assembly; the worktable is provided with several waste ports corresponding one-to-one with the airtightness testing seat between the unloading conveyor belt and the airtightness testing seat, which are used to recycle copper tubes that fail the test; the horizontal drive assembly is used to drive the first vertical drive assembly and the second vertical drive assembly to move horizontally, the first vertical drive assembly is used to clamp the copper tube on the loading conveyor belt and move it into the airtightness testing seat for testing, and the second vertical drive assembly is used to clamp the copper tube after testing in the airtightness testing seat and move it to the waste port or the unloading conveyor belt.

[0017] Preferably, the horizontal drive assembly includes a horizontal slide block slidably connected to a horizontal slide rail and a horizontal motor connected to the worktable. The horizontal motor is driven by the horizontal slide block and is used to drive the horizontal slide block to slide along the horizontal slide rail. The first vertical drive assembly and the second vertical drive assembly each include a plurality of vertical motors evenly spaced along the length direction of the horizontal slide block. The output end of the vertical motor is connected to a gripper. The vertical motor is used to drive the gripper to move vertically up and down, and the gripper is used to grip the corresponding copper tube.

[0018] Preferably, a recycling bin is connected to the unloading end of the unloading conveyor belt on the workbench for recycling qualified copper pipes, and a waste bin is provided below the waste inlet inside the workbench for recycling unqualified copper pipes. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a partial structural schematic diagram of the present invention.

[0021] Figure 3 This is a schematic diagram of the position adjustment component in this utility model.

[0022] Figure 4 This is a schematic diagram of the pick-and-place mechanism in this utility model.

[0023] Figure 5 This is a partial structural schematic diagram of the airtightness testing mechanism in this utility model.

[0024] Figure 6 This is a schematic diagram of the airtightness testing seat and sealing assembly in this utility model.

[0025] Figure 7 This is a cross-sectional view of the airtightness testing seat and sealing assembly in this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Workbench; 11. Feeding conveyor belt; 12. Waste outlet; 13. Recycling bin; 2. Feeding mechanism; 21. Vibrating feeding plate; 22. Feeding conveyor belt; 23. Position adjustment assembly; 231. Position adjustment bracket; 232. First spacing adjustment cylinder; 233. Second spacing adjustment cylinder; 234. Position adjustment cylinder; 3. Picking and placing mechanism; 31. Picking and placing bracket; 311. Horizontal slide rail; 32. Horizontal drive assembly; 33. First vertical drive assembly; 34. Second vertical drive assembly; 4. Air tightness detection mechanism; 41. Air tightness detection seat; 411. Receiving groove; 412. Through hole; 42. Sealing cover plate; 43. Sealing assembly; 431. Sealing drive unit; 432. Sealing push rod; 4321. Inflation channel; 433. Sealing sheet; 434. Lever assembly; 44. Detection bracket; 45. Detection drive unit; 5. Copper pipe. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. At the same time, the terms "first", "second", etc., are only used to distinguish the names of various components and do not have a primary or secondary relationship. Therefore, they should not be construed as limitations on this utility model.

[0030] like Figures 1-7 As shown, this utility model discloses a multi-station fully automatic copper tube airtightness testing device: including a workbench 1 and a feeding mechanism 2, a pick-and-place mechanism 3, and an airtightness testing mechanism 4 disposed on the workbench 1. The feeding mechanism 2 is used to transport the copper tube to be tested to the pick-and-place mechanism 3, and the pick-and-place mechanism 3 is used to move the copper tube transported by the feeding mechanism 2 to the airtightness testing mechanism 4. After the airtightness testing mechanism 4 has completed the test, the copper tube is removed.

[0031] The feeding mechanism 2 includes a vibrating feeding plate 21, a feeding conveyor belt 22, and a position adjustment component 23, all mounted on the workbench 1. One end of the feeding conveyor belt 22 is connected to the discharge port of the vibrating feeding plate 21, and the position adjustment component 23 is positioned between the vibrating feeding plate 21 and the feeding conveyor belt 22. The vibrating feeding plate 21 is used to feed copper tubes onto the feeding conveyor belt 22, and the position adjustment component 23 is used to adjust the position and spacing of the copper tubes on the feeding conveyor belt 22 to facilitate the picking and placing mechanism 3 in picking up the copper tubes.

[0032] The position adjustment assembly 23 includes a position adjustment bracket 231, a first spacing adjustment cylinder 232, a second spacing adjustment cylinder 233, and a position adjustment cylinder 234. The position adjustment bracket 231 is mounted on the workbench 1. The first spacing adjustment cylinder 232, the position adjustment cylinder 234, and the second spacing adjustment cylinder 233 are sequentially mounted on the position adjustment bracket 231 along the conveying direction of the feeding conveyor belt 22, and the distance between the first spacing adjustment cylinder 232 and the second spacing adjustment cylinder 233 is slightly larger than the width of the copper tube. A sensor is provided on one side of the first spacing adjustment cylinder 232 to detect whether a copper tube is passing by.

[0033] When the copper tube (i.e., the first copper tube) conveyed by the vibrating feeding plate 21 passes the second spacing adjusting cylinder 233, the jaws on the second spacing adjusting cylinder 233 will move downwards, thus blocking the movement of the copper tube. Then, the position adjusting cylinder 234 will drive its two jaws to move towards each other, moving the copper tube to the middle position of the feeding conveyor belt 22. Then, the jaws on the second spacing adjusting cylinder 233 will reset, and the copper tube will be conveyed along the feeding conveyor belt 22. During this process, the first spacing adjusting cylinder 232 will drive its jaws to move downwards, locking the second copper tube to prevent... The second copper tube moves together with the first copper tube; then the jaws on the second spacing adjusting cylinder 233 move down, and the jaws on the first spacing adjusting cylinder 232 reset. At this time, the second copper tube is located below the position adjusting cylinder 234. The position adjusting cylinder 234 adjusts the position of the second copper tube. After the first copper tube moves to the set distance, the jaws on the second spacing adjusting cylinder 233 reset, so that the second copper tube moves along the feeding conveyor belt 22. Repeat the above steps to make the position and spacing of the copper tubes on the feeding conveyor belt 22 the same.

[0034] The pick-and-place mechanism 3 includes a pick-and-place bracket 31 mounted on the workbench 1. The pick-and-place bracket 31 has a horizontal slide rail 311 perpendicular to the conveying direction of the feeding conveyor belt 22. A horizontal drive assembly 32 is slidably connected to the horizontal slide rail 311. One end of the horizontal drive assembly 32 is connected to several first vertical drive assemblies 33 spaced apart along the conveying direction of the feeding conveyor belt 22. The other end of the horizontal drive assembly 32 is connected to several second vertical drive assemblies 34 corresponding one-to-one with the first vertical drive assemblies 33. The spacing between two adjacent first vertical drive assemblies 33 is the same as the spacing between two adjacent copper tubes on the feeding conveyor belt 22. The workbench 1 has a discharge conveyor belt 11 parallel to the feeding conveyor belt 22. The spacing between the unloading conveyor belt 11 and the spacing between the first vertical drive assembly 33 and the second vertical drive assembly 34 are the same. Several waste ports 12 corresponding to the second vertical drive assembly 34 are provided on the workbench 1 between the unloading conveyor belt 11 and the airtightness detection mechanism 4 for recycling copper tubes that fail the inspection. The horizontal drive assembly 32 is used to drive the first vertical drive assembly 33 and the second vertical drive assembly 34 to move horizontally. The first vertical drive assembly 33 is used to clamp the corresponding copper tube on the loading conveyor belt 22 and move it to the airtightness detection seat 41 for inspection. The second vertical drive assembly 34 is used to clamp the copper tube after inspection in the airtightness detection seat 41 and move it to the waste port 12 or the unloading conveyor belt 11.

[0035] The horizontal drive assembly 32 includes a horizontal slide block slidably connected to the horizontal slide rail 311 and a horizontal motor connected to the worktable 1. The horizontal motor is driven by the horizontal slide block and is used to drive the horizontal slide block to slide along the horizontal slide rail 311. The first vertical drive assembly 33 and the second vertical drive assembly 34 both include a number of vertical motors evenly spaced along the length of the horizontal slide block. The output end of the vertical motor is connected to a gripper. The vertical motor is used to drive the gripper to move vertically up and down, and the gripper is used to grip the corresponding copper tube.

[0036] A recycling bin 13 is connected to the unloading end of the unloading conveyor belt 11 on the workbench 1 for recycling qualified copper pipes. A waste bin is provided inside the workbench 1 below the waste outlet 12 for recycling unqualified copper pipes.

[0037] The airtightness detection mechanism 4 includes multiple airtightness detection seats 41 corresponding one-to-one with the first vertical drive assembly 33. Each airtightness detection seat 41 has a receiving groove 411 that matches the shape of the copper tube and has an open top. A sealing cover 42 is connected to the top of the airtightness detection seat 41, and a pressure sensor (not shown in the figure) is connected to one end of the sealing cover 42 facing the receiving groove 411 to detect the air pressure in the receiving groove 411. The airtightness detection seat 41 has several sealing components 43 that correspond one-to-one with the copper tube ports. The sealing components 43 are used to seal the corresponding copper tube ports. One of the sealing components 43 has an inflation channel 4321 that connects the external air source and the inner cavity of the copper tube to inflate the inner cavity of the copper tube.

[0038] The airtightness testing mechanism 4 also includes a testing bracket 44 installed on the workbench 1. The testing bracket 44 is provided with a testing drive unit 45 corresponding to a plurality of sealing cover plates 42. The output end of the testing drive unit 45 is connected to the corresponding sealing cover plate 42 and is used to drive the sealing cover plate 42 to move vertically up and down to open or close the corresponding receiving groove 411.

[0039] The sealing assembly 4 includes a sealing drive unit 431, a sealing push rod 432, and a sealing plate 433. The airtightness testing seat 41 has several through holes 412 that correspond one-to-one with the sealing assembly 43 and penetrate the side wall of the airtightness testing seat 41. The sealing drive unit 431 is connected to the outer side wall of the airtightness testing seat 41. One end of the sealing push rod 432 is connected to the output end of the sealing drive unit 431, and the other end passes through the corresponding through hole 412 and is connected to the sealing plate 433. The sealing push rod 432 can slide along the extension direction of the through hole 412 and is sealed with the through hole 412 through a sealing ring. The sealing drive unit 431 is used to drive the sealing push rod 432 to move horizontally along the corresponding through hole 412, thereby driving the sealing plate 433 to block or open the corresponding copper pipe port.

[0040] An inflation channel 4321 is provided on one of the sealing push rods 432, and one end of the inflation channel 4321 passes through the corresponding sealing piece 433 to connect the inner cavity of the copper tube.

[0041] A lever assembly 434 is provided between one of the sealing drive units 431 and the sealing push rod 432. The two ends of the lever assembly 434 are connected to the sealing drive unit 431 and the sealing push rod 432, respectively. The lever assembly 434 includes a first lever and a second lever. One end of the first lever is hinged to the sealing push rod 432, and the other end is hinged to the upper end of the second lever. The upper middle part of the second lever is hinged to the outer wall of the airtightness detection seat 41, and the lower end of the second lever is hinged to the output end of the sealing drive unit 431. This allows the sealing drive unit 431 to output a greater force.

[0042] This invention seals the copper tube port with a sealing component 43, then inflates the inner cavity of the copper tube through an inflation channel. After a period of time, the pressure change in the receiving groove 411 is observed by an air pressure sensor. Since the gas is directly injected into the inner cavity of the copper tube, and the receiving groove 411 is matched with the copper tube, the pressure change in the receiving groove 411 is more obvious when the gas in the copper tube leaks out. This allows for accurate detection of the sealing performance of the copper tube, ensuring product quality.

[0043] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A multi-station fully automatic copper tube airtightness testing device, characterized in that: It includes a workbench (1) and a feeding mechanism (2), a pick-and-place mechanism (3) and an airtightness testing mechanism (4) set on the workbench (1); the feeding mechanism (2) is used to transport the copper tube to be tested to the pick-and-place mechanism (3), and the pick-and-place mechanism (3) is used to move the copper tube transported by the feeding mechanism (2) to the airtightness testing mechanism (4), and then remove the copper tube after the airtightness testing mechanism (4) has completed the test; The airtightness testing mechanism (4) includes an airtightness testing seat (41), which has a receiving groove (411) that matches the shape of the copper tube and has an open top. The top of the airtightness testing seat (41) is connected to a sealing cover (42), and a pressure sensor is connected to one end of the sealing cover (42) facing the receiving groove (411) for detecting the pressure inside the receiving groove (411). The airtightness testing seat (41) has several sealing components (43) that correspond one-to-one with the copper tube ports. The sealing components (43) are used to seal the corresponding copper tube ports. One of the sealing components (43) has an inflation channel (4321) that connects the external air source and the inner cavity of the copper tube for inflating the inner cavity of the copper tube.

2. The multi-station fully automatic copper tube airtightness testing equipment according to claim 1, characterized in that: The airtightness testing mechanism (4) includes a testing bracket (44) and a testing drive unit (45). The testing bracket (44) is mounted on the workbench (1), and the testing drive unit (45) is connected to the testing bracket (44). The output end of the testing drive unit (45) is connected to the sealing cover plate (42) and is used to drive the sealing cover plate (42) to move vertically up and down to open or close the receiving groove (411).

3. The multi-station fully automatic copper tube airtightness testing equipment according to claim 1, characterized in that: The sealing assembly (43) includes a sealing drive unit (431), a sealing push rod (432), and a sealing plate (433). The airtightness testing seat (41) is provided with a plurality of through holes (412) that correspond one-to-one with the sealing assembly (43) and penetrate through the side wall of the airtightness testing seat (41). The sealing drive unit (431) is connected to the outer side wall of the airtightness testing seat (41). One end of the sealing push rod (432) is connected to the output end of the sealing drive unit (431), and the other end passes through the corresponding through hole (412) and is connected to the sealing plate (433). The sealing push rod (432) can slide along the extension direction of the through hole (412) and is sealed in cooperation with the through hole (412). The sealing drive unit (431) is used to drive the sealing push rod (432) to move horizontally, thereby driving the sealing plate (433) to block or open the corresponding copper pipe port.

4. The multi-station fully automatic copper tube airtightness testing equipment according to claim 3, characterized in that: The inflation channel (4321) is set on one of the sealing push rods (432), and one end of the inflation channel (4321) passes through the corresponding sealing piece (433) to connect the inner cavity of the copper tube.

5. The multi-station fully automatic copper tube airtightness testing equipment according to claim 4, characterized in that: One of the sealing drive units (431) and the sealing push rod (432) is also provided with a lever assembly (434), the two ends of which are connected to the sealing drive unit (431) and the sealing push rod (432) respectively.

6. The multi-station fully automatic copper tube airtightness testing equipment according to claim 1, characterized in that: The feeding mechanism (2) includes a vibrating feeding plate (21), a feeding conveyor belt (22) and a position adjustment component (23) set on the workbench (1). One end of the feeding conveyor belt (22) is connected to the discharge port of the vibrating feeding plate (21). The position adjustment component (23) is set between the vibrating feeding plate (21) and the feeding conveyor belt (22). The vibrating feeding plate (21) is used to feed copper tubes to the feeding conveyor belt (22). The position adjustment component (23) is used to adjust the position and spacing of the copper tubes on the feeding conveyor belt (22).

7. The multi-station fully automatic copper tube airtightness testing equipment according to claim 6, characterized in that: The position adjustment component (23) includes a position adjustment bracket (231), a first spacing adjustment cylinder (232), a second spacing adjustment cylinder (233), and a position adjustment cylinder (234). The position adjustment bracket (231) is set on the workbench (1). The first spacing adjustment cylinder (232), the position adjustment cylinder (234), and the second spacing adjustment cylinder (233) are sequentially set on the position adjustment bracket (231) along the transmission direction of the feeding conveyor belt (22). The spacing between the first spacing adjustment cylinder (232) and the second spacing adjustment cylinder (233) is not less than the width of the copper tube.

8. A multi-station fully automatic copper tube airtightness testing device according to claim 1 or 7, characterized in that: The pick-and-place mechanism (3) includes a pick-and-place bracket (31) set on the workbench (1). The pick-and-place bracket (31) is provided with a horizontal slide rail (311) perpendicular to the transmission direction of the feeding conveyor belt (22). A horizontal drive assembly (32) is slidably connected to the horizontal slide rail (311). One end of the horizontal drive assembly (32) is connected to a plurality of first vertical drive assemblies (33) spaced apart along the transmission direction of the feeding conveyor belt (22). The other end of the horizontal drive assembly (32) is connected to a plurality of second vertical drive assemblies (34) corresponding one-to-one with the first vertical drive assemblies (33). There are also multiple airtightness detection seats (41), which correspond one-to-one with the first vertical drive assemblies (33). The workbench (1) is provided with a discharge conveyor belt (11) parallel to the feeding conveyor belt (22). The feeding conveyor belt (11) is provided with a horizontal slide rail (311) perpendicular to the transmission direction of the feeding conveyor belt (22). 22) The distance between the unloading conveyor belt (11) and the distance between the first vertical drive assembly (33) and the second vertical drive assembly (34) are the same; the workbench (1) is provided with several waste ports (12) corresponding to the airtightness testing seat (41) between the unloading conveyor belt (11) and the airtightness testing seat (41) for recycling copper tubes that fail the test; the horizontal drive assembly (32) is used to drive the first vertical drive assembly (33) and the second vertical drive assembly (34) to move horizontally. The first vertical drive assembly (33) is used to clamp the copper tube on the loading conveyor belt (22) and move it to the airtightness testing seat (41) for testing. The second vertical drive assembly (34) is used to clamp the copper tube after testing in the airtightness testing seat (41) and move it to the waste port (12) or the unloading conveyor belt (11).

9. The multi-station fully automatic copper tube airtightness testing equipment according to claim 8, characterized in that: The horizontal drive assembly (32) includes a horizontal slide block slidably connected to a horizontal slide rail (311) and a horizontal motor connected to a worktable (1). The horizontal motor is driven by the horizontal slide block and is used to drive the horizontal slide block to slide along the horizontal slide rail (311). The first vertical drive assembly (33) and the second vertical drive assembly (34) each include a number of vertical motors evenly spaced along the length of the horizontal slide block. The output end of the vertical motor is connected to a gripper. The vertical motor is used to drive the gripper to move vertically up and down. The gripper is used to grip the corresponding copper tube.

10. A multi-station fully automatic copper tube airtightness testing device according to claim 8, characterized in that: The workbench (1) is connected to the unloading end of the unloading conveyor belt (11) by a recycling bin (13) for recycling qualified copper pipes. The workbench (1) is provided with a waste bin below the waste inlet (12) for recycling unqualified copper pipes.

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