Device for testing adaptation of tank body and tank cover by simulating negative pressure environment

Abstract

The invention discloses a device for testing adaptation of a tank body and a tank cover by simulating a negative pressure environment, the device comprises a vacuum box, a pressing mechanism, a clamping assembly, a sealing cover and an exhaust pipe, the clamping assembly comprises a rotary table, a bearing table and a clamp mechanism, and the clamp mechanism comprises a guide rod, a deflection plate, a support plate and a bottom plate; through the structural design of the clamping assembly, the connecting table between the rotary table and the bearing table and the penetrating groove, switching between the clamping state and the loosening state of the clamping assembly can be achieved only by pressing the tank body, the tank body can be replaced more conveniently and rapidly, and a guide rod can slide to the corresponding position according to the size of the tank body in the clamping process; the clamping assembly is arranged in the vacuum box, so that the clamping assembly can effectively clamp tank bodies of various different specifications, the detection range of the detection device is further expanded, the rotary table is rotationally arranged in the vacuum box, the direction of the tank bodies can be adjusted in the detection process, the tank bodies are evenly pressed, dynamic testing is conducted on the tank bodies, and then the detection result is more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of negative pressure detection, and specifically, it is a device for simulating a negative pressure environment to test the fit between a can body and a can lid. Background Art

[0002] A device for simulating a negative pressure environment to test the fit between a can body and a can lid is a device that evaluates whether the can lid can tightly seal the can body by simulating the negative pressure environment in actual use, preventing external air or moisture from entering, and ensuring the weight and safety of the product. It mainly includes a test chamber, a negative pressure generating system, a pressure monitoring system, a clamping and positioning mechanism, and a control system.

[0003] Among them, most of the existing clamping and positioning mechanisms use mechanical clamping mechanisms to clamp the can body. When clamping, it is necessary to manually or mechanically adjust the clamping mechanism according to the size of the can body, and then secondary positioning adjustment is required after clamping the can body, which is rather troublesome. Moreover, generally, the space of the test chamber is small, which makes the clamping and replacement of the can body extremely troublesome and time-consuming, thus affecting the detection efficiency of the detection of the fit between the can body and the can lid.

[0004] Therefore, it is necessary to provide a device for simulating a negative pressure environment to test the fit between a can body and a can lid to solve the problems raised in the above background art. Summary of the Invention

[0005] To achieve the above object, the present invention provides the following technical solution: A device for simulating a negative pressure environment to test the fit between a can body and a can lid, including a vacuum chamber, a downward pressing mechanism, a clamping assembly, a sealing cover, and an air extraction pipe. Among them, the vacuum chamber is a cylindrical chamber with an opening at the top. The downward pressing mechanism is slidably arranged at the bottom of the vacuum chamber. A clamping assembly is arranged at the central position of the vacuum chamber. The sealing cover is sealingly connected to the opening. Two air extraction pipes are arranged at the top of the vacuum chamber, and the two air extraction pipes are communicated with an external vacuum pump. The clamping assembly includes a turntable, a receiving table, and a fixture mechanism. Among them, the turntable is rotatably arranged in the vacuum chamber. A plurality of limiting holes are formed in the turntable. A positioning rod is slidably arranged in the limiting hole through a first spring. The receiving table is fixedly arranged on the positioning rod. Four fixture mechanisms are slidably arranged in a circular shape on the receiving table.

[0006] Preferably, the fixture mechanism includes a guide rod, a deflection plate, a support plate, and a bottom plate. Among them, the guide rod is slidably arranged on the receiving table, deflection plates are symmetrically and rotatably arranged on both sides of the guide rod, an arc-shaped guide bar is fixedly arranged on the deflection plate, the two arc-shaped guide bars are fixedly connected by a pull bar, an arc-shaped guide groove is formed on the guide rod, the arc-shaped guide bar slides along the arc-shaped guide groove, and a second spring is arranged between the pull bar and the guide rod. A support plate is slidably arranged on one side of the deflection plate close to the receiving table, and a T-shaped pull rod is fixedly arranged on the support plate. A third spring is arranged between the T-shaped pull rod and the guide rod. A bottom plate is vertically and fixedly arranged on the support plate, and an air bag strip is also arranged on the deflection plate.

[0007] Preferably, four support columns are fixedly arranged in a circle on the turntable, and a rotating rod is fixedly arranged on the support column;

[0008] A deflection groove is formed on one side of the guide rod close to the support column, the rotating rod rotates and slides along the deflection groove, and a spring telescopic rod is hinged between the guide rod and the support column.

[0009] Preferably, a connecting ring is rotatably arranged on one side of the guide rod close to the receiving table, a cross rod is fixedly arranged on the connecting ring, and a toothed disc is rotatably arranged at the output end of the cross rod;

[0010] Four earth-shaped chutes are formed in a circle on the receiving table, the cross rod is clamped into the chute and slides along the chute, a first rack is fixedly arranged at the bottom of the chute, and the toothed disc slides along the chute and meshes with the first rack.

[0011] Preferably, a push plate is slidably arranged on the other side of the chute, a second rack is slidably arranged on the push plate, and the second rack can mesh with the toothed disc.

[0012] Preferably, a plurality of card slots are formed in a circle on the receiving table, a clamping plate is slidably arranged in the card slot, a connecting block is vertically and fixedly arranged on the clamping plate, and a connecting groove is formed in the connecting block;

[0013] A shaft rod is fixedly arranged on one side of the bottom plate close to the deflection plate, the shaft rod is slidably and rotatably connected with the connecting groove, and a receiving cavity capable of accommodating the connecting block is formed in the support plate.

[0014] Preferably, a limiting groove is formed in the bottom plate, a limiting block is slidably arranged in the limiting groove through a fourth spring, and a limiting rod is slidably arranged in the clamping plate;

[0015] Four push bars with an inclined surface are slidably arranged in the receiving table, and the limiting rod is slidably clamped with the push bar.

[0016] Preferably, four sliding plates are slidably arranged in the receiving table. Two pushing blocks I and II with an inclined surface are respectively and fixedly arranged on both sides of the sliding plate. A fifth spring is arranged between the sliding plate and the receiving table, and the sliding plate is fixedly connected with the pushing plate through two support rods. The pushing block I can push the pushing bar to slide;

[0017] A driving block is slidably arranged in the receiving table. The lower end of the driving block penetrates through the receiving table, and a sixth spring is arranged between the other end and the receiving table. A pushing groove with an inclined surface is formed in the driving block, and the pushing block II can slide and be stuck in the pushing groove.

[0018] Preferably, a through groove is formed in the turntable. Eight clamping blocks with an inclined surface are slidably arranged on the through groove in a circumferentially uniform manner. An eighth spring is arranged between the clamping block and the turntable. An arc groove is formed at the bottom of the clamping block. A rotating ring is rotatably arranged at the bottom of the through groove. Eight driving rods are slidably arranged in the rotating ring in a circumferentially uniform manner. A ninth spring is arranged between the driving rod and the rotating ring. Eight arc-shaped plates are fixedly arranged on the rotating ring in a circumferentially uniform manner. The arc-shaped plate can be stuck in the arc groove;

[0019] A connecting table is fixedly arranged at the bottom of the receiving table. An annular groove is formed in the connecting table. The connecting table can push the clamping block to slide, and the clamping block can be stuck in the annular groove. Two driving plates I and two driving plates II are arranged at the bottom of the connecting table in a circumferentially uniform manner. The driving plates I and II are arranged in a staggered manner and can alternately push the driving rod to slide.

[0020] Compared with the prior art, the present invention provides a device for simulating a negative pressure environment to test the adaptability between a can body and a can lid, and has the following beneficial effects:

[0021] In the present invention, through the structural design of the clamping assembly, the connecting table and the structure in the through groove, the switching between the clamping and loosening states of the clamping assembly can be realized only by pressing the can body, so that the replacement of the can body is more convenient and fast. When clamping, the guide rod will slide to the corresponding position according to the size of the can body, so that the clamping assembly can effectively clamp various cans with different specifications, further expanding the detection range of the detection device. In addition, the turntable is rotatably arranged in the vacuum box, which can adjust the orientation of the can body during the detection process, so that the can body is uniformly pressed and dynamically tested, and the detection result is more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is a schematic diagram of the structure of the clamping assembly in the present invention;

[0024] Figure 3 Schematic diagram of the structure inside the receiving plate and the driving block in the present invention;

[0025] Figure 4 is Figure 3 Enlarged schematic diagram of the structure of part A of;

[0026] Figure 5 Schematic diagram of the structure of the turntable in the present invention;

[0027] Figure 6 Schematic diagram of the structure of the receiving table in the present invention;

[0028] Figure 7 Schematic diagram of the structure of the guide rod and the cross rod in the present invention;

[0029] Figure 8 Schematic diagram of the structure of the bottom plate and the support plate in the present invention;

[0030] Figure 9 Schematic diagram of the structure of the sliding plate and the pushing plate in the present invention;

[0031] In the figure: 1, vacuum box; 2, downward pressing mechanism; 3, clamping assembly; 31, turntable; 311, support column; 312, rotating rod; 313, spring telescopic rod; 314, clamping block; 315, rotating ring; 316, driving rod; 317, arc plate; 32, receiving table; 321, sliding groove; 322, rack one; 323, pushing plate; 324, rack two; 325, clamping plate; 326, connecting block; 327, limiting rod; 328, pushing strip; 33, fixture mechanism; 331, guide rod; 332, deflecting plate; 333, support plate; 334, bottom plate; 335, deflecting groove; 336, connecting ring; 337, cross rod; 338, gear disk; 339, shaft rod; 34, sliding plate; 341, pushing block one; 342, pushing block two; 35, driving block; 351, pushing groove; 36, connecting table; 361, annular groove; 362, driving plate one; 363, driving plate two; 4, sealing cover; 5, air extraction pipe. Detailed implementation manners

[0032] Please refer to Figures 1 to 9, in an embodiment of the present invention, a device for simulating a negative pressure environment to test the adaptability between a can body and a can lid includes a vacuum chamber 1, a pressing mechanism 2, a clamping assembly 3, a sealing cover 4, and an air extraction pipe 5. Among them, the vacuum chamber 1 is a cylindrical chamber with an opening at the top. The pressing mechanism 2 is slidably arranged at the bottom of the vacuum chamber 1. A clamping assembly 3 is arranged at the central position of the vacuum chamber 1. The sealing cover 4 is hermetically connected to the opening. Two air extraction pipes 5 are arranged at the top of the vacuum chamber 1, and the two air extraction pipes 5 are communicated with an external vacuum pump. The clamping assembly 3 includes a turntable 31, a receiving table 32, and a fixture mechanism 33. Among them, the turntable 31 is rotatably arranged in the vacuum chamber 1. A plurality of limit holes are formed in the turntable 31, and positioning rods are slidably arranged in the limit holes through a first spring. The receiving table 32 is fixedly arranged on the positioning rods. Four fixture mechanisms 33 are arranged on the receiving table 32 to slide in a circular manner;

[0033] In addition, the power source for the rotation of the turntable 31 along the vacuum chamber 1 is an external driving mechanism, such as direct drive by a motor and a gear mechanism. The power source for the sliding of the pressing mechanism 2 along the vacuum chamber 1 is an external driving mechanism, such as a lead screw nut mechanism, a hydraulic driving mechanism, and a worm and worm gear;

[0034] The fixture mechanism 33 includes a guide rod 331, a deflection plate 332, a support plate 333, and a bottom plate 334. Among them, the guide rod 331 is slidably arranged on the receiving table 32. Deflection plates 332 are symmetrically and rotatably arranged on both sides of the guide rod 331. Arc-shaped guide bars are fixedly arranged on the deflection plates 332. The two arc-shaped guide bars are fixedly connected by a pull bar. An arc-shaped guide groove is formed in the guide rod 331. The arc-shaped guide bars slide along the arc-shaped guide groove, and a second spring is arranged between the pull bar and the guide rod 331. A support plate 333 is slidably arranged on one side of the deflection plate 332 close to the receiving table 32, and a T-shaped pull rod is fixedly arranged on the support plate 333. A third spring is arranged between the T-shaped pull rod and the guide rod 331. A bottom plate 334 is vertically and fixedly arranged on the support plate 333. An airbag strip is also arranged on the deflection plate 332;

[0035] Four support columns 311 are fixedly arranged on the turntable 31 in a circular manner, and a rotating rod 312 is fixedly arranged on the support columns 311;

[0036] A deflection groove 335 is formed on one side of the guide rod 331 close to the support column 311. The rotating rod 312 rotates and slides along the deflection groove 335, and a spring telescopic rod 313 is hinged between the guide rod 331 and the support column 311;

[0037] A connecting ring 336 is rotatably arranged on one side of the guide rod 331 close to the receiving table 32. A cross rod 337 is fixedly arranged on the connecting ring 336, and a toothed disc 338 is rotatably arranged at the output end of the cross rod 337;

[0038] Four earth-shaped chutes 321 are circumferentially formed on the receiving table 32. The cross rod 337 is inserted into the chute 321 and slides along the chute 321. A first rack 322 is fixedly arranged at the bottom of the chute 321, and the toothed disc 338 slides along the chute 321 and meshes with the first rack 322;

[0039] A push plate 323 is slidably arranged on the other side of the chute 321. A second rack 324 is slidably arranged on the push plate 323, and the second rack 324 can mesh with the toothed disc 338;

[0040] A plurality of card slots are circumferentially formed on the receiving table 32. A card plate 325 is slidably arranged in the card slot. A connecting block 326 is vertically fixedly arranged on the card plate 325, and a connecting groove is formed in the connecting block 326;

[0041] A shaft rod 339 is fixedly arranged on one side of the bottom plate 334 close to the deflecting plate 332. The shaft rod 339 is slidably and rotatably connected with the connecting groove, and a receiving cavity capable of accommodating the connecting block 326 is formed in the support plate 333;

[0042] A limiting groove is formed in the bottom plate 334. A limiting block is slidably arranged in the limiting groove through a fourth spring. A limiting rod 327 is slidably arranged in the card plate 325;

[0043] Specifically, setting the cross rod 337 can keep the distance between the guide rod 331 and the receiving table 32 unchanged during the sliding process. Similarly, setting the connecting block 326 and the shaft rod 339 can also ensure that the guide rod 331 can drive the card plate 325 to slide during the sliding process, and one end of the card plate 325 and the bottom plate 334 are always in the same vertical position during the sliding process. Furthermore, when the bottom plate 334 and the card plate 324 are in a parallel state, the limiting rod 327 can effectively slide into the limiting groove, and setting the receiving cavity can ensure that the bottom plate 334 can fit with the card plate 324;

[0044] Four push strips 328 with an inclined surface are slidably arranged in the receiving table 32. The limiting rod 327 is slidably clamped with the push strip 328;

[0045] Four sliding plates 34 are slidably arranged in the receiving table 32. On both sides of each sliding plate 34, two pushing blocks 341 and 342 with an inclined surface are fixedly arranged respectively. A fifth spring is arranged between the sliding plate 34 and the receiving table 32. The sliding plate 34 is fixedly connected to the pushing plate 323 through two support rods. The pushing block 341 can push the pushing bar 328 to slide;

[0046] A driving block 35 is slidably arranged in the receiving table 32. The lower end of the driving block 35 penetrates the receiving table 32. A sixth spring is arranged between the other end and the receiving table 32. A pushing groove 351 with an inclined surface is formed in the driving block 35. The pushing block 342 can slide and be stuck in the pushing groove 351.

[0047] A through groove is formed in the turntable 31. Eight clamping blocks 314 with an inclined surface are slidably arranged on the through groove in a circumferentially uniform manner. An eighth spring is arranged between the clamping block 314 and the turntable 31. An arc groove is formed at the bottom of the clamping block 314. A rotating ring 315 is rotatably arranged at the bottom of the through groove. Eight driving rods 316 are slidably arranged in the rotating ring 315 in a circumferentially uniform manner. A ninth spring is arranged between the driving rod 316 and the rotating ring 315. Eight arc-shaped plates 317 are fixedly arranged on the rotating ring 315 in a circumferentially uniform manner. The arc-shaped plate 317 can be stuck in the arc groove;

[0048] A connecting table 36 is fixedly arranged at the bottom of the receiving table 32. An annular groove 361 is formed in the connecting table 36. The connecting table 36 can push the clamping block 314 to slide, and the clamping block 314 can be stuck in the annular groove 361. Two driving plates 362 and two driving plates 363 are arranged at the bottom of the connecting table 36 in a circumferentially uniform manner. The driving plates 362 and 363 are arranged in a staggered manner and can alternately push the driving rod 316 to slide.

[0049] Specifically, staggering the positions of the first driving plate 362 and the second driving plate 363 can ensure that after the first driving plate 362 drives one of the driving rods 316 to rotate, another driving rod 316 adjacent to this driving rod 316 can be exactly within the driving range of the second driving plate 363. And after the first driving plate 362 and the driving plate 363 are pressed down simultaneously, the second driving plate 363 will occupy the sliding range of the driving rod 316, thereby slidingly arranging the driving rod 316 so that the driving rod 316 can slide when it contacts the second driving plate 363 and can slide under the action of the ninth spring after the second driving plate 363 slides upward to the driving range of the second driving plate 363, thus ensuring that the second driving plate 363 can drive this driving rod 316 to slide during the next slide, and so on in a cycle. By alternately driving the rotating ring 315 to rotate with the first driving plate 362 and the second driving plate 363, the clamping block 314 can be switched between the active and engaged states, that is, the receiving table 32 can be switched between the active and engaged states, and further the clamping assembly 3 can be switched between the clamping and releasing states for the tank body, so that the replacement of the tank body can be realized only by pressing down the tank body downward.

[0050] During implementation, open the sealing cover 4, place the tank body to be detected into the vacuum chamber 1 and clamp the tank body through the clamping assembly 3. Then seal the sealing cover 4 and use the pressing mechanism 2 to press down the tank cover. Subsequently, use a vacuum pump to extract the air in the vacuum chamber 1, thereby creating a negative pressure environment in the cavity to detect the adaptability between the tank body and the tank cover. During this process, when placing the tank body onto the clamping assembly 3, in the initial state, the spring telescopic rod 313 will push the four guide rods 331 to the central position of the receiving platform 32. Subsequently, during the process of lowering the tank body, the tank body will first come into contact with the four guide rods 331, and under the restricting action of the four guide rods 331, the tank body will be located at the central position of the four guide rods 331, that is, at the central position of the receiving platform 32. Then continue to push the tank body downward to slide. At this time, the four guide rods 331 will slide outward from the receiving platform 32 under the thrust, and the cross rod 337 will slide along the chute 321, and the toothed disc 338 will rotate meshing with the first rack 322. When the tank body slides downward and the bottom of the tank body contacts one end of the bottom plate 334, the tank body will press down the bottom plate 334, causing the bottom plate 334 to drive the deflecting plate 332 to deflect, that is, making the bottom plate 334 fit with the bottom of the tank body, and the deflecting plate 332 deflects to the vertical position and fits against the outer side of the tank body. At this time, continue to press down the tank body, causing the bottom plate 334 to drive the support plate 333 to slide and snap into the card slot. At this time, the bottom of the tank body fits with the receiving platform 32. Continue to press down the tank body, causing the tank body to drive the bottom plate 334 and the receiving platform 32 to slide downward together. During this process, the driving block 35 will contact the turntable 31 and slide upward, and push the second push block 342 to slide, that is, causing the slide plate 34 to slide. The sliding of the slide plate 34 can further drive the push plate 323 to slide, that is, making the second rack 324 mesh with the toothed disc 338, and further causing the toothed disc 338 to be restricted and no longer slide, that is, the guide rod 331 is fixed on the receiving platform 32. At the same time, the first push block 341 can push the push bar 328 to slide, that is, causing the limiting rod 327 to disengage from the clamping plate 325 and push the limiting block to slide, that is, the limiting rod 327 snaps into the limiting groove, and further causing the limiting rod 327 to restrict the bottom plate 334, so that the bottom plate 334 and the deflecting plate 332 will not rotate. At the same time, the connecting platform 36 will slide into the through groove, and the connecting platform 36 will push the clamping block 314 to slide. When the annular groove 361 is aligned, the clamping block 314 can snap into the annular groove 361, that is, the receiving platform 32 is clamped after being pressed down. At this time, the tank body is stably placed on the bottom plate 334, and the deflecting plate 332 fits against the outer side of the tank body. Then inflate the airbag strip so that the airbag strip fits against the tank body, thereby stably clamping the tank body. Subsequently, when it is necessary to replace the tank body after the detection is completed, loosen the airbag strip, and then continue to press down the tank body, causing the receiving platform 32 to slide downward.At this time, the clamping block 314 disengages from the annular groove 361 and slides into the turntable 31. Subsequently, the first driving plate 362 or the second driving plate 363 drives the driving rod 316 to rotate and drives the rotating ring 315 to rotate, so that the arc-shaped plate 317 is clamped into the arc-shaped groove to limit the clamping block 314, that is, the clamping block 314 will not slide out of the turntable 31. At this time, the tank body is released, and the receiving table 32 can rebound upward under the action of the first spring. At the same time, the driving block 35, the sliding plate 34, the pushing bar 318, the bottom plate 334, the deflecting plate 332 and the guide rod 331 can all be reset under the action of the springs arranged thereon, so that the tank body is disengaged. Subsequently, a new tank body is pressed down in the same manner. Different from this, at this time, the clamping block 314 is in a clamped state. Therefore, it is necessary to continuously press down the receiving table 32 to make the second driving plate 363 or the first driving plate 362 drive the rotating ring 315 to rotate, that is, to make the arc-shaped plate 317 disengage from the arc-shaped groove, and the clamping block 314 can be clamped into the annular groove 361, that is, the clamping of the tank body is completed. In this way, when the tank body is replaced, there is no need to adjust the fixture additionally. Only by pressing down the tank body can the switching between the two states of clamping and disengagement be completed, making the replacement of the tank body more convenient. Moreover, the clamping assembly 3 can effectively clamp various different specifications of tank bodies when clamping the tank body, and can effectively perform adaptability tests on various different specifications of tank bodies and tank covers, so that the detection range is wider.

[0051] In summary, when the present invention is implemented, through the structural design of the clamping assembly 3, the connecting table 36 and the structure in the through groove, the switching between the two states of clamping and loosening of the clamping assembly 3 can be realized only by pressing the tank body, making the replacement of the tank body more convenient and fast. Moreover, when clamping, the guide rod 331 will slide to the corresponding position according to the size of the tank body, so that the clamping assembly can effectively clamp various different specifications of tank bodies, further expanding the detection range of the detection device. In addition, the turntable 31 is rotatably arranged in the vacuum chamber 1, which can adjust the orientation of the tank body during the detection process, making the tank body evenly stressed and performing a dynamic test on the tank body, so that the detection result is more accurate.

[0052] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent replacements or changes, and should be covered by the protection scope of the present invention.

Claims

1. A device for testing the adaptability of a can body and a can cover in a simulated negative pressure environment, characterized in that: The vacuum box (1) comprises a vacuum box (1), a pressing mechanism (2), a clamping assembly (3), a sealing cover (4) and an exhaust pipe (5), wherein the vacuum box (1) is a cylindrical chamber with an opening at the top, the pressing mechanism (2) is slidably arranged at the bottom of the vacuum box (1), a clamping assembly (3) is arranged at the center of the vacuum box (1), the sealing cover (4) is sealed and connected to the opening, two exhaust pipes (5) are arranged at the top of the vacuum box (1), and the two exhaust pipes (5) are connected to an external vacuum pump, the clamping assembly (3) comprises a turntable (31), a receiving platform (32) and a clamping mechanism (33), wherein the turntable (31) is rotatably arranged in the vacuum box (1), a plurality of limiting holes are opened on the turntable (31), a positioning rod is slidably arranged in the limiting hole through a spring, the receiving platform (32) is fixedly arranged on the positioning rod, and four clamping mechanisms (33) are slidably arranged on the receiving platform (32) in a circular manner.

2. The device for testing the adaptability of a can body and a can cover in a simulated negative pressure environment according to claim 1, characterized in that: The clamp mechanism (33) comprises a guide rod (331), a deflection plate (332), a support plate (333) and a bottom plate (334), wherein the guide rod (331) is slidably arranged on the receiving platform (32), the deflection plates (332) are symmetrically arranged on both sides of the guide rod (331) for rotation, an arc-shaped guide bar is fixedly arranged on the deflection plate (332), and the two arc-shaped guide bars are fixedly connected by a pull bar, and an arc-shaped guide groove is opened on the guide rod (331), and the arc-shaped guide groove is fixedly arranged on the guide rod (331). The guide strip slides along the arc-shaped guide groove and a second spring is arranged between the pull strip and the guide rod (331); a support plate (333) is slidably arranged on one side of the deflection plate (332) close to the receiving platform (32), and a T-shaped pull rod is fixedly arranged on the support plate (333); a third spring is arranged between the T-shaped pull rod and the guide rod (331); a bottom plate (334) is vertically fixedly arranged on the support plate (333), and an airbag strip is also arranged on the deflection plate (332).

3. The device for testing the adaptability of a can body and a can cover in a simulated negative pressure environment according to claim 2, characterized in that: Four support columns (311) are fixedly arranged in a circle on the turntable (31), and a rotating rod (312) is fixedly arranged on the support column (311); A deflection groove (335) is provided on one side of the guide rod (331) close to the support column (311), the rotating rod (312) is arranged to rotate and slide along the deflection groove (335), and a spring telescopic rod (313) is hinged between the guide rod (331) and the support column (311).

4. The device for testing the adaptability of a can body and a can cover in a simulated negative pressure environment according to claim 2, characterized in that: A connecting ring (336) is rotatably provided on one side of the guide rod (331) close to the receiving platform (32), a cross rod (337) is fixedly provided on the connecting ring (336), and a toothed disc (338) is rotatably provided on the output end of the cross rod (337); The receiving platform (32) is provided with four earth-shaped sliding grooves (321) in a circumferential manner, the cross rod (337) is inserted into the sliding groove (321) and slides along the sliding groove (321), a rack (322) is fixedly provided at the bottom of the sliding groove (321), and the toothed disc (338) slides along the sliding groove (321) and meshes with the rack (322).

5. The device for testing the adaptability of a can body and a can cover in a simulated negative pressure environment according to claim 4, characterized in that: A push plate (323) is slidably disposed on the other side of the slide groove (321), and a second rack (324) is slidably disposed on the push plate (323), and the second rack (324) can mesh with the toothed disc (338).

6. The device for testing the adaptability of a can body and a can cover in a simulated negative pressure environment according to claim 5, characterized in that: The receiving platform (32) is provided with a plurality of slots in a circumferential shape, a card plate (325) is slidably arranged in the slot, a connecting block (326) is vertically fixedly arranged on the card plate (325), and a connecting slot is provided on the connecting block (326); A shaft rod (339) is fixedly provided on one side of the bottom plate (334) close to the deflection plate (332), the shaft rod (339) is slidably and rotatably connected to the connection groove, and a receiving cavity capable of receiving the connection block (326) is provided in the support plate (333).

7. The device for testing the adaptability of a can body and a can cover in a simulated negative pressure environment according to claim 6, characterized in that: A limiting groove is provided in the bottom plate (334), a limiting block is slidably arranged in the limiting groove via a spring 4, and a limiting rod (327) is slidably arranged in the clamping plate (325); Four push bars (328) with an inclined surface are slidably arranged in the receiving platform (32), and the limiting rod (327) is slidably engaged with the push bars (328).

8. The device for testing the adaptability of a can body and a can cover in a simulated negative pressure environment according to claim 7, characterized in that: Four slide plates (34) are slidably arranged in the receiving platform (32), and two push blocks (341) and (342) with an inclined surface are fixedly arranged on both sides of the slide plate (34), a spring (5) is arranged between the slide plate (34) and the receiving platform (32), and the slide plate (34) is fixedly connected to the push plate (323) through two supporting rods, and the push block (341) can push the push bar (328) to slide; A driving block (35) is slidably arranged in the receiving platform (32), the lower end of the driving block (35) penetrates the receiving platform (32), and a spring (6) is arranged between the other end and the receiving platform (32). A push groove (351) with an inclined surface is opened on the driving block (35), and the push block (342) can be slidably inserted into the push groove (351).

9. The device for testing the adaptability of a can body and a can cover in a simulated negative pressure environment according to claim 1, characterized in that: The turntable (31) is provided with a through groove, and eight blocks (314) with an inclined surface are evenly slidably arranged on the through groove in a circular manner, a spring eight is arranged between the block (314) and the turntable (31), an arc groove is provided at the bottom of the block (314), a rotating ring (315) is rotatably arranged at the bottom of the through groove, eight driving rods (316) are evenly slidably arranged in the rotating ring (315), a spring nine is arranged between the driving rods (316) and the rotating ring (315), and eight arc plates (317) are evenly fixedly arranged on the rotating ring (315), and the arc plates (317) can be inserted into the arc groove; A connecting platform (36) is fixedly arranged at the bottom of the receiving platform (32), and an annular groove (361) is provided on the connecting platform (36). The connecting platform (36) can push the clamping block (314) to slide, and the clamping block (314) can be clamped into the annular groove (361). Two driving plates (362) and two driving plates (363) are evenly arranged in a circumferential manner at the bottom of the connecting platform (36). The driving plates (362) and the driving plates (363) are staggered and can alternately push the driving rod (316) to slide.

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