Plastic bottle sealing performance detection device

Abstract

The utility model belongs to the technical field of plastic bottle processing, and discloses a plastic bottle sealing performance detection device which comprises a bottom plate, a supporting table is fixedly arranged on the upper surface of the bottom plate, a conveying belt is installed at one end of the supporting table, and a supporting frame with a U-shaped cross section is fixedly arranged on the upper surface of the bottom plate. An air cylinder is fixedly arranged on the upper surface of the supporting frame, a piston rod of the air cylinder penetrates through the supporting frame, an air blower is fixedly arranged at the end of the piston rod of the air cylinder, a rotating disc is rotationally arranged on the supporting table, and a plurality of positioning grooves are formed in the upper surface of the rotating disc in an array mode. A driving assembly used for driving the rotating disc to rotate is arranged on the supporting table. The device has the effect of prolonging the service life of the device.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic bottle processing, in particular to a plastic bottle sealing detection device. Background Art

[0002] Plastic bottles are mainly made of polyester, polyethylene, and polypropylene as raw materials. After adding the corresponding organic solvents and being heated at high temperature, they are blow molded, extruded, or injection molded through plastic molds to obtain plastic containers. Plastic bottles have the characteristics of being not easy to break, low cost, high transparency, and made of food-grade raw materials. Due to the thin thickness of plastic bottles, defective products with holes and leaks will appear during production and processing, and corresponding detection and screening devices need to be used for screening.

[0003] Chinese utility model patent publication number CN216433443U discloses a device for testing the sealing properties of plastic bottles. The device aims to address the technical problem of existing plastic bottles being prone to tipping over due to the lack of positioning during testing. The device comprises a machine platform; a rotating disk disposed above the machine platform, with a positioning slot defined on its edge; a drive motor connected to the rotating disk; a conveyor platform disposed on one side of the rotating disk; and a push-and-blow mechanism mounted above the positioning slot. The positioning slot is structured to fit the plastic bottle, and when the outlet of the conveyor platform aligns with the positioning slot, the conveyor platform delivers the plastic bottle into the positioning slot, whereupon the push-and-blow mechanism performs air blowing testing on the plastic bottle.

[0004] The inventors believe that the following drawbacks exist in the aforementioned related art: The device positions the plastic bottle using positioning grooves on the surface of a rotating disk. During use, the rotating disk is driven by a motor. However, the seal test on the plastic bottle takes a while. During this time, the motor must stop, which results in frequent stopping and starting of the motor. This frequent stopping and starting can easily damage the motor, thereby reducing the device's service life. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a plastic bottle sealing detection device.

[0006] The above technical objectives of the present utility model are achieved through the following technical solutions: a plastic bottle sealing detection device, comprising a base plate, a support platform is fixedly provided on the upper surface of the base plate, a conveyor belt is installed at one end of the support platform, a support frame with a U-shaped cross-section is fixedly provided on the upper surface of the base plate, a cylinder is fixedly provided on the upper surface of the support frame, the piston rod of the cylinder passes through the support frame, an air blower is fixedly provided on the end of the cylinder piston rod, a rotating disk is rotatably provided on the support platform, a plurality of positioning grooves are arrayed on the upper surface of the rotating disk, and a drive component for driving the rotating disk to rotate is provided on the support platform.

[0007] By adopting the above technical solution, when the staff needs to perform a seal test on the plastic bottle, the staff needs to place the plastic bottle on the conveyor belt, and then the conveyor belt transports the plastic bottle to the positioning groove. At this time, the staff needs to start the cylinder, and then extend the piston rod of the cylinder, so that the blower moves downward under the action of the cylinder piston rod to test the seal of the plastic bottle. During this process, the staff needs to start the drive assembly to drive the rotating disk to rotate. During the process of the drive assembly driving the rotating disk, the rotating disk rotates intermittently under the action of the drive assembly, so that when the seal test is performed, the rotating disk does not rotate, thereby eliminating the need to repeatedly open and close the drive assembly, thereby reducing the probability of damage to the drive assembly and extending the service life of the drive assembly.

[0008] Furthermore, a rotation groove is provided on the upper surface of the support platform, and a receiving groove is provided on the inner bottom wall of the rotation groove. The driving assembly includes a rotating rod rotatably arranged in the rotation groove, a rotating part fixedly arranged on the bottom surface of the rotating rod, a motor fixedly arranged on the inner bottom wall of the receiving groove, a driving disk fixedly arranged at the end of the motor output shaft, and a connecting rod fixedly arranged on the upper surface of the driving disk, and a plurality of through grooves are formed through the upper surface array of the rotating part, the connecting rod and the through grooves match each other, the connecting rod is eccentrically arranged on the upper surface of the driving disk, the upper surface of the driving disk abuts against the bottom surface of the rotating part, and the rotating rod and the rotating disk are fixed to each other.

[0009] By adopting the above technical solution, when a worker needs to drive the rotating disk to rotate, the worker needs to start the motor, thereby rotating the output shaft of the motor, so that the driving disk rotates synchronously with the motor output shaft under the action of the motor output shaft, and then the connecting rod rotates under the action of the driving disk. During this process, when the connecting rod is aligned with the through slot, the connecting rod rotates into the through slot under the action of the driving disk, thereby rotating the rotating member under the action of the connecting rod, thereby rotating the rotating rod under the action of the rotating member, and then rotating the rotating disk under the action of the rotating rod. During this process, when the rotating member rotates 90 degrees, the connecting rod and the through slot separate from each other, thereby stopping the rotating member, thereby stopping the rotating rod and the rotating disk. Subsequently, when the connecting rod is aligned with the through slot again, the rotating member, the rotating rod and the rotating disk rotate 90 degrees again under the action of the connecting rod. During this process, the rotating disk rotates intermittently, without the need to frequently start and stop the motor, thereby reducing the probability of motor damage and extending the service life of the device.

[0010] Furthermore, a limit plate is fixedly provided on the upper surface of the driving plate, the axis of the limit plate coincides with the axis of the driving plate, a plurality of first arc grooves are arrayed on the outer wall of the rotating member, and the limit plate is rotatably connected to the first arc grooves.

[0011] By adopting the above technical solution, when the driving disk rotates, the limiting disk rotates with the driving disk under the action of the driving disk, thereby causing the limiting disk and the first arc groove to rotate relative to each other. During this process, the outer wall of the limiting disk abuts against the first arc groove, thereby causing the limiting disk to limit the rotating part, thereby reducing the probability of the rotating part shaking and causing the connecting rod to be unable to face the through groove, thereby improving the stability of the device.

[0012] Furthermore, a second arc groove is formed on the outer wall of the limiting plate, and the second arc groove is directly opposite to the connecting rod.

[0013] By adopting the above technical solution, when the connecting rod drives the rotating member to rotate, the second arc groove reduces the probability of the rotating member colliding with the limit plate during rotation, thereby improving the stability of the device.

[0014] Furthermore, a plurality of fixing holes are provided in a circular array on the inner wall of the rotating groove, a plurality of limiting holes are provided in an array on the outer wall of the rotating rod, a fixing rod is slidably arranged in the fixing hole, the fixing rod is slidably connected to the limiting hole, a first spring is fixedly provided on the side wall of the fixing rod, and the other end of the first spring is fixedly provided on the inner wall of the fixing hole.

[0015] By adopting the above technical solution, when the rotating rod rotates, the staff needs to move the fixed rod into the fixed slot. Then, when the rotating rod rotates 90 degrees, the fixed hole and the limit hole are aligned, and the fixed rod slides into the limit hole under the action of the first spring, so that the fixed rod can limit the rotating rod. This reduces the probability of the rotating rod rotating under the action of external forces when it stops rotating, thereby improving the stability of the device.

[0016] Furthermore, an annular groove is provided on the inner wall of the rotating groove, an annular block is rotatably provided in the annular groove, and the annular block is fixed to the rotating rod.

[0017] By adopting the above technical solution, when the rotating rod rotates, the annular block rotates synchronously with the rotating rod under the action of the rotating rod. During this process, the annular block limits the rotating rod, thereby reducing the probability of the rotating rod sliding up and down, thereby improving the stability of the device.

[0018] Furthermore, a plurality of heat dissipation holes are arranged in an array on the inner wall of the accommodating groove.

[0019] By adopting the above technical solution, the heat dissipation holes reduce the probability of the motor being damaged by overheating when used for a long time in a closed environment, thereby extending the service life of the motor.

[0020] Furthermore, one end of the fixing rod away from the first spring is provided with a rounded corner.

[0021] By adopting the above technical solution, when the rotating rod rotates, due to the existence of the rounded corners, the fixed rod slides into the fixed hole. During this process, the staff does not need to manually slide the fixed rod, thereby reducing the difficulty of the staff's work.

[0022] In summary, the present invention has the following beneficial effects:

[0023] 1. In this application, when the staff needs to perform a seal test on the plastic bottle, the staff needs to place the plastic bottle on the conveyor belt, and then the conveyor belt transports the plastic bottle to the positioning slot. At this time, the staff needs to start the cylinder, and then extend the piston rod of the cylinder, so that the blower moves downward under the action of the cylinder piston rod to perform a seal test on the plastic bottle. During this process, the staff needs to start the drive assembly to drive the rotating disk to rotate. During the process of the drive assembly driving the rotating disk, the rotating disk rotates intermittently under the action of the drive assembly, so that when the seal test is performed, the rotating disk does not rotate, so there is no need to repeatedly open and close the drive assembly, thereby reducing the probability of damage to the drive assembly and extending the service life of the drive assembly.

[0024] 2. In the present application, when the staff needs to drive the rotating disk to rotate, the staff needs to start the motor, thereby rotating the output shaft of the motor, so that the driving disk rotates synchronously with the motor output shaft under the action of the motor output shaft, and then the connecting rod rotates under the action of the driving disk. During this process, when the connecting rod is directly opposite to the through slot, the connecting rod rotates into the through slot under the action of the driving disk, thereby rotating the rotating member under the action of the connecting rod, thereby rotating the rotating rod under the action of the rotating member, and then rotating the rotating disk under the action of the rotating rod. During this process, when the rotating member rotates 90 degrees, the connecting rod and the through slot are separated from each other, thereby stopping the rotating member, thereby stopping the rotating rod and the rotating disk. Subsequently, when the connecting rod is directly opposite to the through slot again, the rotating member, the rotating rod and the rotating disk rotate 90 degrees again under the action of the connecting rod. During this process, the rotating disk rotates intermittently, and there is no need to frequently start and stop the motor, thereby reducing the probability of motor damage and extending the service life of the device.

[0025] 3. In the present application, when the driving disk rotates, the limiting disk rotates along with the driving disk under the action of the driving disk, thereby causing the limiting disk and the first arc groove to rotate relative to each other. During this process, the outer wall of the limiting disk abuts against the first arc groove, thereby causing the limiting disk to limit the rotating part, thereby reducing the probability of the rotating part shaking and causing the connecting rod to be unable to face the through groove, thereby improving the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0027] Figure 2 Schematic diagram of the cross-sectional structure of the interior of the support platform in an embodiment of the present utility model;

[0028] Figure 3 This is a schematic diagram of the structure of the drive assembly in the embodiment of the present utility model;

[0029] Figure 4 It is a schematic cross-sectional structure diagram of the support platform and the rotating disk in an embodiment of the present utility model;

[0030] Figure 5 yes Figure 4 Schematic diagram of the enlarged structure of A in the figure.

[0031] In the figure: 1. Base plate; 11. Support platform; 12. Conveyor belt; 13. Support frame; 14. Cylinder; 15. Blower; 16. Rotating disk; 2. Positioning groove; 21. Rotating groove; 22. Accommodating groove; 23. Through groove; 24. First arc groove; 25. Second arc groove; 26. Fixing hole; 27. Limiting hole; 28. Annular groove; 3. Driving assembly; 31. Rotating rod; 32. Rotating part; 33. Motor; 34. Driving disk; 35. Connecting rod; 4. Limiting disk; 5. Fixing rod; 51. First spring; 6. Ring block; 7. Heat dissipation hole; 8. Fillet. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; it is obvious that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0033] like Figure 1-5 As shown, an embodiment of the present application discloses a plastic bottle sealing detection device, including a base plate 1, a support platform 11, a conveyor belt 12, a support frame 13, a cylinder 14, an air blower 15, a rotating disk 16, a drive assembly 3, a limit plate 4, a fixing rod 5, a first spring 51 and an annular block 6. The base plate 1 is a rectangular plate structure, the support platform 11 is a rectangular parallelepiped structure, and the support platform 11 is fixedly arranged on the upper surface of the base plate 1. The conveyor belt 12 is mounted at one end of the support platform 11 for transporting plastic bottles. The cross section of the support frame 13 is U-shaped, and the support frame 13 is fixedly arranged on the upper surface of the base plate 1. The cylinder 14 is fixedly arranged on the upper surface of the support frame 13, and the axis of its piston rod is vertical. The piston rod of the cylinder 14 passes through the support frame 13. The blower 15 is fixed to the end of the piston rod of the cylinder 14 and is used to detect the sealing of the plastic bottles. The detailed structure of the blower 15 can be found in the Chinese Utility Model Patent Publication No. CN216433443U. Since the blower 15 belongs to the prior art, its structure will not be described in detail. The rotating disk 16 is a circular plate with a vertical axis. The rotating disk 16 is rotatably mounted on the support platform 11. The upper surface of the rotating disk 16 is provided with a plurality of positioning grooves 2 in an array.

[0034] When the staff needs to test the sealing of the plastic bottle, the staff needs to place the plastic bottle on the conveyor belt 12, and then the conveyor belt 12 transports the plastic bottle to the positioning groove 2. At this time, the staff needs to start the cylinder 14, and then extend the piston rod of the cylinder 14, so that the blower 15 moves downward under the action of the piston rod of the cylinder 14 to test the sealing of the plastic bottle. During this process, the staff needs to start the drive assembly 3 to drive the rotating disk 16 to rotate. During the process of the drive assembly 3 driving the rotating disk 16, the rotating disk 16 rotates intermittently under the action of the drive assembly 3, so that when the sealing test is performed, the rotating disk 16 does not rotate, thereby eliminating the need to repeatedly open and close the drive assembly 3, thereby reducing the probability of damage to the drive assembly 3 and extending the service life of the drive assembly 3.

[0035] A rotating groove 21 is provided on the upper surface of the support platform 11, and a receiving groove 22 is provided on the inner bottom wall of the rotating groove 21. The driving assembly 3 is arranged on the support platform 11, and is used to drive the rotating disk 16 to rotate. The driving assembly 3 includes a rotating rod 31, a rotating member 32, a motor 33, a driving disk 34 and a connecting rod 35. The rotating rod 31 is a round rod-shaped structure, and its axis coincides with the axis of the rotating disk 16. The rotating rod 31 is rotatably arranged in the rotating groove 21, and the rotating rod 31 and the rotating disk 16 are fixed to each other. The rotating member 32 is fixedly provided on the bottom surface of the rotating rod 31, and its axis coincides with the axis of the rotating rod 31. A plurality of through grooves 23 are arranged in an array on the upper surface of the rotating member 32. The motor 33 is fixedly provided on the inner bottom wall of the receiving groove 22, and the axis of its output shaft is vertical. The drive disc 34 is a disc-shaped structure, whose axis coincides with the axis of the output shaft of the motor 33. The drive disc 34 is fixedly mounted at the end of the output shaft of the motor 33, and the upper surface of the drive disc 34 abuts the bottom surface of the rotating member 32. The connecting rod 35 is a round rod-shaped structure with a vertical axis. The connecting rod 35 is fixedly mounted on the upper surface of the drive disc 34, matching the through slot 23, and is eccentrically mounted on the upper surface of the drive disc 34.

[0036] When the staff needs to drive the rotating disk 16 to rotate, the staff needs to start the motor 33, thereby rotating the output shaft of the motor 33, so that the driving disk 34 rotates synchronously with the output shaft of the motor 33 under the action of the output shaft of the motor 33, and then the connecting rod 35 rotates under the action of the driving disk 34. During this process, when the connecting rod 35 is facing the through slot 23, the connecting rod 35 is rotated into the through slot 23 under the action of the driving disk 34, and then the rotating member 32 is rotated under the action of the connecting rod 35, so that the rotating rod 31 is rotated under the action of the rotating member 32, and then the rotating disk 16 is rotated under the action of the rotating rod 31. During this process, when the rotating member 32 rotates 90 degrees, the connecting rod 35 and the through slot 23 are separated from each other, and then the rotating member 32 stops rotating, thereby stopping the rotating rod 31 and the rotating disk 16 from rotating. Subsequently, when the connecting rod 35 is aligned with the through slot 23 again, the rotating member 32, the rotating rod 31 and the rotating disk 16 rotate 90 degrees again under the action of the connecting rod 35. During this process, the rotating disk 16 rotates intermittently, and there is no need to frequently start and stop the motor 33, thereby reducing the probability of damage to the motor 33 and extending the service life of the device.

[0037] The limiting disk 4 is a disc-shaped structure. The limiting disk 4 is fixedly arranged on the upper surface of the driving disk 34. The axis of the limiting disk 4 coincides with the axis of the driving disk 34. A plurality of first arc grooves 24 are arranged in an array on the outer wall of the rotating member 32, and the limiting disk 4 is rotatably connected to the first arc groove 24.

[0038] When the driving disk 34 rotates, the limiting disk 4 rotates along with the driving disk 34 under the action of the driving disk 34, thereby causing the limiting disk 4 and the first arc groove 24 to rotate relative to each other. During this process, the outer wall of the limiting disk 4 abuts against the first arc groove 24, thereby causing the limiting disk 4 to limit the rotating member 32, thereby reducing the probability of the rotating member 32 shaking and causing the connecting rod 35 to be unable to face the through groove 23, thereby improving the stability of the device.

[0039] To improve the stability of the device, a second arcuate groove 25 is formed on the outer wall of the limit plate 4, and the second arcuate groove 25 is directly opposite the connecting rod 35. When the connecting rod 35 drives the rotating member 32 to rotate, the second arcuate groove 25 reduces the probability of the rotating member 32 colliding with the limit plate 4 during rotation, thereby improving the stability of the device.

[0040] A plurality of fixing holes 26 are formed in a circular array on the inner wall of the rotation slot 21, and a plurality of limiting holes 27 are formed in an array on the outer wall of the rotation rod 31. The fixing rod 5 is a round rod with a horizontal axis. The fixing rod 5 is slidably mounted within the fixing holes 26 and is slidably connected to the limiting holes 27. One end of a first spring 51 is fixed to the side wall of the fixing rod 5, and the other end of the first spring 51 is fixed to the inner wall of the fixing hole 26.

[0041] When the rotating rod 31 rotates, the staff needs to move the fixed rod 5 into the fixed groove. Then, when the rotating rod 31 rotates 90 degrees, the fixing hole 26 and the limiting hole 27 are aligned, and the fixing rod 5 slides into the limiting hole 27 under the action of the first spring 51, so that the fixed rod 5 can limit the rotating rod 31. This reduces the probability of the rotating rod 31 rotating under the action of external forces when it stops rotating, thereby improving the stability of the device.

[0042] An annular groove 28 is provided on the inner wall of the rotating groove 21 . The annular block 6 is a circular ring structure, and its axis coincides with the axis of the rotating rod 31 . The annular block 6 is rotatably arranged in the annular groove 28 , and the annular block 6 and the rotating rod 31 are fixed to each other.

[0043] When the rotating rod 31 rotates, the annular block 6 rotates synchronously with the rotating rod 31 under the action of the rotating rod 31. During this process, the annular block 6 limits the rotating rod 31, thereby reducing the probability of the rotating rod 31 sliding up and down, thereby improving the stability of the device.

[0044] In order to extend the service life of the motor 33, a plurality of heat dissipation holes 7 are arranged in an array on the inner wall of the receiving groove 22. The heat dissipation holes 7 reduce the probability of overheating and damage of the motor 33 during long-term use in a closed environment, thereby extending the service life of the motor 33.

[0045] To reduce the difficulty of the staff's work, the end of the fixing rod 5 away from the first spring 51 is provided with a rounded corner 8. When the rotating rod 31 rotates, due to the presence of the rounded corner 8, the fixing rod 5 slides into the fixing hole 26. During this process, the staff does not need to manually slide the fixing rod 5, thereby reducing the difficulty of the staff's work.

[0046] The operating principle of the plastic bottle sealing test device in this embodiment is as follows: when a worker needs to test the sealing of a plastic bottle, the worker needs to place the plastic bottle on the conveyor belt 12, which then transports the plastic bottle to the positioning groove 2. At this time, the worker needs to activate the cylinder 14, thereby extending the piston rod of the cylinder 14. The blower 15 is then moved downward by the piston rod of the cylinder 14 to test the sealing of the plastic bottle. During this process, the worker needs to activate the drive assembly 3 to drive the rotating disk 16 to rotate. At this time, the staff needs to start the motor 33, so that the output shaft of the motor 33 rotates, so that the driving disk 34 rotates synchronously with the output shaft of the motor 33 under the action of the output shaft of the motor 33, and thus the connecting rod 35 rotates under the action of the driving disk 34. During this process, when the connecting rod 35 is facing the through slot 23, the connecting rod 35 is rotated into the through slot 23 under the action of the driving disk 34, and thus the rotating member 32 is rotated under the action of the connecting rod 35, so that the rotating rod 31 is rotated under the action of the rotating member 32, and then the rotating disk 16 is rotated under the action of the rotating rod 31. During this process, when the rotating member 32 rotates 90 degrees, the connecting rod 35 and the through slot 23 are separated from each other, so that the rotating member 32 stops rotating, so that the rotating rod 31 and the rotating disk 16 stop rotating. Subsequently, when the connecting rod 35 is aligned with the through slot 23 again, the rotating member 32, the rotating rod 31 and the rotating disk 16 rotate 90 degrees again under the action of the connecting rod 35. During this process, the rotating disk 16 rotates intermittently, and there is no need to frequently start and stop the motor 33, thereby reducing the probability of damage to the motor 33 and extending the service life of the device.

[0047] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A plastic bottle sealing detection device, comprising a bottom plate (1), characterized in that: A support platform (11) is fixedly provided on the upper surface of the base plate (1), a conveyor belt (12) is installed at one end of the support platform (11), a support frame (13) with a U-shaped cross section is fixedly provided on the upper surface of the base plate (1), a cylinder (14) is fixedly provided on the upper surface of the support frame (13), a piston rod of the cylinder (14) passes through the support frame (13), and a blower (15) is fixedly provided at the end of the piston rod of the cylinder (14), a rotating disk (16) is rotatably provided on the support platform (11), a plurality of positioning grooves (2) are arranged in an array on the upper surface of the rotating disk (16), and a driving component (3) for driving the rotating disk (16) to rotate is provided on the support platform (11).

2. A plastic bottle sealing detection device according to claim 1, characterized in that: The upper surface of the support platform (11) is provided with a rotation groove (21), and the inner bottom wall of the rotation groove (21) is provided with an accommodating groove (22). The driving assembly (3) comprises a rotation rod (31) rotatably arranged in the rotation groove (21), a rotation member (32) fixedly arranged on the bottom surface of the rotation rod (31), a motor (33) fixedly arranged on the inner bottom wall of the accommodating groove (22), a driving disk (34) fixedly arranged at the end of the output shaft of the motor (33), and a connecting rod (35) fixedly arranged on the upper surface of the driving disk (34). The upper surface of the rotating member (32) is provided with a plurality of through grooves (23) in an array, and the connecting rod (35) and the through grooves (23) are matched with each other. The connecting rod (35) is eccentrically arranged on the upper surface of the driving disk (34), and the upper surface of the driving disk (34) abuts against the bottom surface of the rotation member (32). The rotation rod (31) and the rotating disk (16) are fixed to each other.

3. A plastic bottle sealing detection device according to claim 2, characterized in that: A limiting disk (4) is fixedly provided on the upper surface of the driving disk (34), the axis of the limiting disk (4) coincides with the axis of the driving disk (34), a plurality of first circular arc grooves (24) are arranged in an array on the outer wall of the rotating member (32), and the limiting disk (4) is rotatably connected to the first circular arc grooves (24).

4. A plastic bottle sealing detection device according to claim 3, characterized in that: A second arc groove (25) is provided on the outer wall of the limiting plate (4), and the second arc groove (25) is directly opposite to the connecting rod (35).

5. The device for detecting the sealing performance of a plastic bottle according to claim 2, wherein: A plurality of fixing holes (26) are provided in a circumferential array on the inner wall of the rotating groove (21), a plurality of limiting holes (27) are provided in an array on the outer wall of the rotating rod (31), a fixing rod (5) is slidably provided in the fixing hole (26), the fixing rod (5) is slidably connected to the limiting hole (27), a first spring (51) is fixedly provided on the side wall of the fixing rod (5), and the other end of the first spring (51) is fixedly provided on the inner wall of the fixing hole (26).

6. The device for detecting the sealing performance of a plastic bottle according to claim 2, wherein: An annular groove (28) is provided on the inner wall of the rotating groove (21), an annular block (6) is rotatably arranged in the annular groove (28), and the annular block (6) and the rotating rod (31) are fixed to each other.

7. The device for detecting the sealing performance of a plastic bottle according to claim 2, wherein: A plurality of heat dissipation holes (7) are arranged in an array on the inner wall of the accommodating groove (22).

8. The device for detecting the sealing performance of a plastic bottle according to claim 5, wherein: An end of the fixing rod (5) away from the first spring (51) is provided with a rounded corner (8).

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