A sealing property detection device for a packaging can

Abstract

The utility model relates to the technical fields of sealing detection device of packing jar, disclose a kind of sealing detection device of packing jar, including chassis, the side of chassis is fixedly connected with connecting frame, the top of chassis is fixedly connected with first servo cylinder, the top of first servo cylinder is fixedly connected with adjusting disc, by setting liftable top cover and sealing ring, reliable sealing to the top of packing jar is realized, and by continuous inflation, the pressure change in cavity drives the movement of sliding disc and contact disc in exhaust pipe, when the tank body is well sealed, cavity pressure is quickly established, and the microswitch on the sliding disc is triggered by spring, when the tank body exists leakage, gas pressure cannot be effectively formed, and the contact disc is delayed or insufficient by spring, thereby realizing automatic judgment to sealing. At the same time, by setting buffer tank between air inlet and sealing area, gas impact force can be effectively slowed down, the stability of pressure change is guaranteed, and the accuracy and repeatability of detection results are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of sealing detection devices for packaging cans, specifically a sealing detection device for packaging cans. Background Technology

[0002] Metal packaging cans are sealed containers made of metal materials such as tinplate, aluminum alloy, or stainless steel, primarily used for the storage and transportation of food, beverages, chemical products, and other goods. Currently, during the production process of metal packaging cans, their sealing performance is typically tested to ensure the reliability of the cans during storage, transportation, and long-term sealed storage.

[0003] Existing methods for testing sealing often employ water pressurization or negative pressure extraction. These methods are complex to operate, have low efficiency, and are greatly affected by the environment. Some testing devices lack a real-time response mechanism to changes in air pressure during the inflation process, making it difficult to accurately determine minor leaks in the tank.

[0004] Therefore, it is necessary to design a sealing test device for packaging cans to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a sealing performance testing device for packaging cans, which solves the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sealing performance testing device for packaging cans, comprising a chassis, a connecting frame fixedly connected to one side of the chassis, a first servo cylinder fixedly connected to the top of the chassis, an adjusting plate fixedly connected to the top of the first servo cylinder, two symmetrical mounting openings on the outer surface of the adjusting plate, a second servo cylinder fixedly connected to the top and bottom of the connecting frame, a connecting plate fixedly connected to the bottom of the second servo cylinder, two symmetrical connecting columns fixedly connected to the bottom of the connecting plate, and a top cover fixedly connected to the bottom of each connecting column. A sealing ring is fixed to the bottom of the top cover. An air inlet and a pressure relief port are opened on the top of the top cover. A buffer box is fixed to the bottom of the top cover. An exhaust pipe is fixedly inserted into the top of the top cover. A screw is threaded into the top of the exhaust pipe. A rotating column and a turntable are fixed to the top and bottom of the air inlet, respectively. A micro switch is fixed to the bottom of the turntable. A fixed plate is fixed inside the exhaust pipe. A pin is slidably inserted inside the fixed plate. A contact plate and a sliding plate are fixed to the top and bottom of the pin, respectively. Two symmetrical springs are fixed to the bottom of the fixed plate.

[0007] Preferably, the turntable is rotatably disposed inside the exhaust pipe, and the outer surface of the turntable is in contact with the inner wall of the exhaust pipe, and the micro switch is rotatably disposed between the turntable and the contact plate.

[0008] Preferably, the outer surfaces of the contact plate and the sliding plate are in contact with the inner wall of the exhaust pipe, and the top and bottom ends of the two springs are respectively fixed to the bottom of the fixed plate and the top of the sliding plate.

[0009] Preferably, the bottom end of the air inlet is connected to the top end of the buffer box, and the bottom of the buffer box is provided with multiple circular holes, and the pressure relief port, exhaust pipe and buffer box are all located inside the sealing ring.

[0010] Preferably, there are two top covers and two sealing rings, and the two top covers and two sealing rings are located directly above the two mounting ports, and there is a gap between the two rotating posts and the bottom of the connecting plate.

[0011] Preferably, a rubber ring is fixed inside each of the two mounting ports, and the two sealing rings are slidably disposed inside the two rubber rings, and the diameter of the two top covers is larger than the diameter of the two rubber rings.

[0012] The technical solution provided by this utility model has the following advantages compared with the prior art: This invention achieves a reliable seal on the top of the packaging can by incorporating a liftable top cover and a sealing ring. Continuous inflation causes pressure changes within the cavity, which in turn move a sliding disc and a contact disc inside the exhaust pipe. When the can is well-sealed, the internal pressure builds up rapidly, causing the sliding disc to spring back and trigger a microswitch. When there is a leak in the can, the pressure cannot build up effectively, resulting in a delayed or insufficient springback of the contact disc, thus enabling automatic judgment of the seal. Simultaneously, by placing a buffer box between the air inlet and the sealing area, the gas impact force is effectively reduced, ensuring the stability of pressure changes and improving the accuracy and repeatability of the test results. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded schematic diagram of the exhaust pipe structure of this utility model; Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle; In the diagram: 1. Chassis; 2. Connecting frame; 3. First servo electric cylinder; 4. Adjusting plate; 5. Rubber ring; 7. Second servo electric cylinder; 8. Connecting plate; 9. Connecting column; 10. Top cover; 11. Sealing ring; 12. Air inlet; 13. Exhaust pipe; 14. Buffer box; 15. Pressure relief protection port; 16. Sliding plate; 17. Insertion column; 18. Spring; 19. Fixed plate; 20. Contact plate; 21. Screw; 22. Turntable; 23. Rotating column; 24. Micro switch. Detailed Implementation

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0015] Obviously, many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0016] Please see Figures 1-3 This utility model provides a sealing performance testing device for packaging cans, including a chassis 1. A connecting frame 2 is fixedly connected to one side of the chassis 1. A first servo electric cylinder 3 is fixedly connected to the top of the chassis 1. An adjusting plate 4 is fixedly connected to the top of the first servo electric cylinder 3. The outer surface of the adjusting plate 4 has two symmetrical mounting holes. A second servo electric cylinder 7 is fixedly connected to the top and bottom of the connecting frame 2. A connecting plate 8 is fixedly connected to the bottom of the second servo electric cylinder 7. Two symmetrical connecting posts 9 are fixedly connected to the bottom of the connecting plate 8. A top cover 10 is fixedly connected to the bottom, and a sealing ring 11 is fixedly connected to the bottom of the top cover 10. An air inlet 12 and a pressure relief protection port 15 are opened on the top of the top cover 10. A buffer box 14 is fixedly connected to the bottom of the top cover 10. An exhaust pipe 13 is fixedly inserted into the top of the top cover 10, and a screw 21 is threaded into the top of the exhaust pipe 13. A rotating column 23 and a turntable 22 are fixedly connected to the top and bottom of the air inlet 12, respectively. A micro switch 24 is fixedly connected to the bottom of the turntable 22. A fixed plate 19 is fixedly connected inside the exhaust pipe 13. The fixed plate 19 has a sliding insert post 17 inside. The top and bottom ends of the insert post 17 are respectively fixed to a contact plate 20 and a sliding plate 16. Two symmetrical springs 18 are fixed to the bottom of the fixed plate 19. This device detects the sealing performance of the packaging can by continuous inflation. The packaging can to be inspected is placed into the two mounting ports. The height of the adjusting plate 4 is adjusted by raising and lowering the first servo cylinder 3 to clamp and stabilize the packaging can to be inspected. The extension and retraction of the second servo cylinder 7 allows the two top covers 10 and the two sealing rings 1 to move together. 1. Seal the tops of two packaging cans to be inspected. When the packaging cans are well sealed, inflate them through the two air inlets 12. The air pressure inside the two chambers rises rapidly, causing the two elastic sliding discs 16 and two contact discs 20 at the two exhaust pipes 13 to spring up. The two contact discs 20 then contact the two microswitches 24. The rotation of the two rotating columns 23 pre-sets the limit positions for contact. When there is a leak in the can, the air pressure inside the chamber cannot be effectively established, resulting in insufficient or delayed springing of the contact discs 20. By detecting the displacement of the contact discs 20 or the response time of the microswitches 24, the sealing performance of the packaging cans can be determined.

[0017] To improve the stability of the turntable 22 sliding inside the exhaust pipe 13, the turntable 22 is rotatably disposed inside the exhaust pipe 13, and the outer surface of the turntable 22 is in contact with the inner wall of the exhaust pipe 13, and the micro switch 24 is rotatably disposed between the turntable 22 and the contact plate 20.

[0018] To improve the sliding stability of the contact plate 20 and the sliding plate 16 inside the exhaust pipe 13, the outer surfaces of the contact plate 20 and the sliding plate 16 are in contact with the inner wall of the exhaust pipe 13, and the top and bottom ends of the two springs 18 are respectively fixed to the bottom of the fixed plate 19 and the top of the sliding plate 16.

[0019] Furthermore, in order to buffer the gas during inflation and reduce the gas impact force, the bottom end of the air inlet 12 is connected to the top end of the buffer box 14, and the bottom of the buffer box 14 is provided with multiple circular holes, and the pressure relief protection port 15, the exhaust pipe 13 and the buffer box 14 are all located inside the sealing ring 11.

[0020] To better seal the top of the packaging can to be inspected, and to facilitate the rotation of the rotating column 23, there are two top covers 10 and two sealing rings 11, and the two top covers 10 and the two sealing rings 11 are located directly above the two mounting ports, and there is a gap between the two rotating columns 23 and the bottom of the connecting plate 8.

[0021] To improve the positioning and clamping stability of the appropriate packaging cans to be inspected, rubber rings 5 ​​are fixed inside the two mounting ports, and the two sealing rings 11 are slidably disposed inside the two rubber rings 5, and the diameters of the two top covers 10 are both larger than the diameters of the two rubber rings 5.

[0022] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0023] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0024] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A sealing performance testing device for packaging cans, comprising a chassis (1), characterized in that: A connecting frame (2) is fixed to one side of the chassis (1), a first servo electric cylinder (3) is fixed to the top of the chassis (1), an adjusting plate (4) is fixed to the top of the first servo electric cylinder (3), and two symmetrical mounting holes are provided on the outer surface of the adjusting plate (4). A second servo electric cylinder (7) is fixed to the top and bottom of the connecting frame (2), a connecting plate (8) is fixed to the bottom of the second servo electric cylinder (7), two symmetrical connecting columns (9) are fixed to the bottom of the connecting plate (8), a top cover (10) is fixed to the bottom of the connecting column (9), a sealing ring (11) is fixed to the bottom of the top cover (10), and an air inlet (12) and a pressure relief protection port (13) are provided on the top of the top cover (10). 5) A buffer box (14) is fixedly connected to the bottom of the top cover (10). An exhaust pipe (13) is fixedly inserted into the top of the top cover (10). A screw (21) is threaded into the top of the exhaust pipe (13). A rotating column (23) and a turntable (22) are fixedly connected to the top and bottom of the air inlet (12), respectively. A micro switch (24) is fixedly connected to the bottom of the turntable (22). A fixed plate (19) is fixedly connected inside the exhaust pipe (13). A plug (17) is slidably inserted into the inside of the fixed plate (19). A contact plate (20) and a sliding plate (16) are fixedly connected to the top and bottom of the plug (17), respectively. Two symmetrical springs (18) are fixedly connected to the bottom of the fixed plate (19).

2. The sealing performance testing device for a packaging can according to claim 1, characterized in that: The turntable (22) is rotatably disposed inside the exhaust pipe (13), and the outer surface of the turntable (22) is in contact with the inner wall of the exhaust pipe (13), and the micro switch (24) is rotatably disposed between the turntable (22) and the contact plate (20).

3. The sealing performance testing device for a packaging can according to claim 1, characterized in that: The outer surfaces of the contact plate (20) and the sliding plate (16) are in contact with the inner wall of the exhaust pipe (13), and the top and bottom ends of the two springs (18) are respectively fixed to the bottom of the fixed plate (19) and the top of the sliding plate (16).

4. The sealing performance testing device for a packaging can according to claim 1, characterized in that: The bottom end of the air inlet (12) is connected to the top end of the buffer box (14), and the bottom of the buffer box (14) is provided with multiple circular holes. The pressure relief protection port (15), the exhaust pipe (13) and the buffer box (14) are all located inside the sealing ring (11).

5. The sealing performance testing device for a packaging can according to claim 1, characterized in that: The number of top cover (10) and sealing ring (11) is two, and the two top covers (10) and two sealing rings (11) are located directly above the two mounting ports, and the two rotating posts (23) form a gap with the bottom of the connecting plate (8).

6. The sealing performance testing device for a packaging can according to claim 1, characterized in that: Both of the mounting ports are fixed with rubber rings (5), and the two sealing rings (11) are slidably disposed inside the two rubber rings (5), and the diameters of the two top covers (10) are both greater than the diameters of the two rubber rings (5).

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