A punch test device for testing the breaking resistance of a packaging box

Abstract

The utility model relates to packing box punch test technical field especially for a kind of packing box breaking degree detection's punch test device, including the case, the top of the case is rotatably connected with carousel, and the bottom of the carousel is fixedly connected with gear, the inside of the case is fixedly connected with motor, the output of the motor is fixedly connected with screw rod, the top of the carousel is fixedly connected with fixed cylinder, the top of multiple fixed cylinders is respectively threadedly connected with limit cap, the inner side wall of the fixed cylinder is slidably connected with sealing block, the top of the sealing block is provided with rubber sheet, the sidewall of the limit cap is fixedly connected with handle, the utility model drives screw rod by setting motor, to make carousel rotate on the top of case, improve the flexibility and application scope of packing box punch test device, it is favorable to improve test efficiency, and setting handle makes the installation, disassembly of limit cap more convenient.

Description

Technical Field

[0001] This utility model relates to the field of packaging box puncture test technology, and in particular to a puncture test device for testing the bursting strength of packaging boxes. Background Technology

[0002] Bursting strength is the limit of paper and paperboard under uniformly increasing pressure in the vertical direction per unit area, measured in kilopascals. This index is measured by a Mullen bursting strength tester, and the measured value is called absolute bursting strength. Dividing it by the paper weight yields the bursting index, which is used to evaluate the material's resistance to compression. The relevant index is often obtained through a puncture test.

[0003] As disclosed in Chinese Patent No. CN211877609U, the height of multiple sharp blocks is controlled by a pneumatic cylinder, so that the sharp blocks puncture the cardboard during the test. However, in actual tests, the tips of the sharp blocks are quite sharp, which significantly damages the surface of the cardboard, making it difficult to accurately determine the slope resistance of the cardboard. At the same time, it is also inconvenient to replace sharp blocks of different sizes whenever needed. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing the following technical solution:

[0005] A puncture test device for testing the bursting strength of packaging boxes includes a chassis. A turntable is rotatably connected to the top of the chassis, and a gear is fixedly connected to the bottom of the turntable. A motor is fixedly connected inside the chassis, and a lead screw is fixedly connected to the output end of the motor. A fixed cylinder is fixedly connected to the top of the turntable, and multiple fixed cylinders are arranged in a circumferential array. Limit caps are threadedly connected to the top of each of the multiple fixed cylinders. A sealing block is slidably connected to the inner side wall of the fixed cylinder, and a rubber sheet is provided on the top of the sealing block. A handle is fixedly connected to the side wall of the limit cap.

[0006] The above structure, with its motor-driven lead screw, allows the turntable to rotate on the top of the chassis, enhancing the flexibility and applicability of the packaging box puncture test device and improving test efficiency. The addition of a throttle handle also makes the installation and removal of the limit cap more convenient.

[0007] As an improvement to the above technical solution, a double cylinder is fixedly connected inside the chassis, a push block is fixedly connected to the output end of the double cylinder, a limit rod is fixedly connected to the top of the push block, and the two limit rods are arranged in a corresponding manner. A sliding groove is opened at the bottom of the turntable, and the sliding groove is set to the size of the limit rod. A limit hole is opened at the bottom of the turntable, and multiple limit holes are arranged in a circumferential array.

[0008] With the above structure, the height of the limit rod is controlled by a double cylinder, so that when the turntable rotates to a predetermined angle, the limit rod is inserted into the limit hole to achieve the positioning of the turntable. This helps to improve the accuracy of the test device, enhance its practicality, and reduce the difficulty of operation.

[0009] As an improvement to the above technical solution, a fixed shaft is fixedly connected inside the chassis, and a fixed frame is fixedly connected to the top of the fixed shaft. A fixed block is fixedly connected to the side wall of the fixed frame. A hydraulic cylinder is fixedly connected to the top of the fixed block. A pressure rod is fixedly connected to the output end of the hydraulic cylinder, and a pressure block is ball-jointed to the bottom of the pressure rod.

[0010] With the above structure, the height of the pressure rod and the pressure block is controlled by a hydraulic cylinder, thereby fixing the paper of the packaging box to be tested on the top of the corresponding limit cap. At the same time, the ball joint relationship between the pressure rod and the pressure block improves the flexibility of the pressure block, which is beneficial to improving the clamping stability of the pressure block and the limit cap.

[0011] As an improvement to the above technical solution, an air injection pipe is fixedly connected to the top of the push block, an air delivery pipe is fixedly connected to the side wall of the push block, and an air pump is fixedly connected to the end of the air delivery pipe away from the push block. The air pump is fixedly connected inside the machine housing, and an air hole is opened at the bottom of the turntable.

[0012] With the above structure, an air pump is set up to provide air pressure. By fixing an air injection pipe to the top of the push block, the air injection pipe moves synchronously with the limit rod, so that the air pump can transmit air pressure to the bottom of multiple rubber sheets, which enhances the practicality of the device.

[0013] As an improvement to the above technical solution, a collar is fixedly connected to the side wall of the fixed shaft.

[0014] The above structure, with its protective collar between the fixed shaft and the turntable, ensures closer contact between the components, enhances the device's sealing, helps reduce the coefficient of friction between components, protects the component structure, and extends the device's service life.

[0015] As an improvement to the above technical solution, a fixing ring is fixedly connected to the side wall of the chassis, and a cover plate is fixedly connected to the top of the fixing ring.

[0016] The above structure, with its fixing ring and shielding plate covering the bottom components, helps to prevent these components from being exposed to the outside for extended periods, thus extending the lifespan of the device and reducing maintenance requirements.

[0017] As an improvement to the above technical solution, a lubrication hole is provided on the side wall of the pressure rod, and the lubrication hole penetrates through the bottom of the pressure rod.

[0018] With the above structure, a lubrication hole is opened inside the pressure rod, allowing the operator to inject lubricant between the pressure rod and the pressure block, which helps to prevent the components from jamming and improves the durability of the device.

[0019] The beneficial effects of this utility model are:

[0020] 1. By setting a motor-driven lead screw, the turntable rotates on the top of the machine, which improves the flexibility and applicability of the packaging box puncture test device and helps to improve test efficiency. At the same time, the addition of a throttle makes the installation and removal of the limit cap more convenient.

[0021] 2. By setting a double cylinder to control the height of the limit rod, the limit rod is inserted into the limit hole when the turntable rotates to a predetermined angle, thereby achieving the positioning of the turntable. This helps to improve the accuracy of the test device, enhance its practicality, and reduce the difficulty of operation. Attached Figure Description

[0022] Figure 1 This is a perspective view of the present utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the turntable in this utility model;

[0024] Figure 3 This is a schematic diagram of the chassis structure in this utility model;

[0025] Figure 4 This is a schematic diagram of the pusher block in this utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the fixing frame in this utility model.

[0027] Reference numerals: 1. Chassis; 11. Turntable; 12. Gear; 13. Motor; 14. Lead screw; 15. Fixed cylinder; 16. Limit cap; 17. Sealing block; 18. Rubber sheet; 19. Throttle; 2. Double cylinder; 21. Push block; 22. Limit rod; 23. Slide groove; 24. Limit hole; 3. Fixed shaft; 31. Fixed frame; 32. Fixed block; 33. Hydraulic cylinder; 34. Pressure rod; 35. Pressure block; 4. Air injection pipe; 41. Air delivery pipe; 42. Air pump; 43. Air hole; 5. Collar; 6. Fixed ring; 61. Cover plate; 7. Lubrication hole. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the following provides a more detailed description of the utility model. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the utility model.

[0029] Please refer to Figures 1 to 4As shown, this utility model provides a puncture test device for testing the burst strength of packaging boxes, including a housing 1. A turntable 11 is rotatably connected to the top of the housing 1, and a gear 12 is fixedly connected to the bottom of the turntable 11. A motor 13 is fixedly connected inside the housing 1, and a lead screw 14 is fixedly connected to the output end of the motor 13. A fixed cylinder 15 is fixedly connected to the top of the turntable 11, and multiple fixed cylinders 15 are arranged in a circumferential array. Limit caps 16 are threadedly connected to the top of the multiple fixed cylinders 15 respectively. A sealing block 17 is slidably connected to the inner side wall of the fixed cylinder 15, and a rubber sheet 18 is provided on the top of the sealing block 17. A handle 19 is fixedly connected to the side wall of the limit cap 16. During operation, the lead screw 14 fixed to the output end of the motor 13 meshes with the gear 12 fixed to the bottom of the turntable 11. The operator can drive the motor 13 to rotate the turntable 11 on the top of the housing 1, thereby adjusting the turntable. The angle of 11 allows different fixing cylinders 15 to face the operator. The rubber sheets 18 inside the multiple fixing cylinders 15 are of different sizes. The operator can use the different sizes of the rubber sheets 18 to test the packaging box. At the same time, whenever a rubber sheet 18 is damaged, the operator can use the handle 19 to rotate the limit cap 16 until the limit cap 16 falls off the top of the corresponding fixing cylinder 15. After the rubber sheet 18 is replaced, the operator can tighten the limit cap 16 back onto the top of the fixing cylinder 15. The sealing block 17 serves to support the rubber sheet 18. Through the above structure, the motor 13 drives the lead screw 14, thereby making the turntable 11 rotate on the top of the machine box 1. This improves the flexibility and applicability of the packaging box puncture test device and helps to improve the test efficiency. At the same time, the handle 19 makes the installation and removal of the limit cap 16 more convenient.

[0030] Please refer to Figures 3 to 4As shown, a double cylinder 2 is fixedly connected inside the casing 1. A push block 21 is fixedly connected to the output end of the double cylinder 2. A limit rod 22 is fixedly connected to the top of the push block 21, and the two limit rods 22 are arranged correspondingly. A slide groove 23 is opened at the bottom of the turntable 11, and the slide groove 23 is set to correspond to the size of the limit rod 22. A limit hole 24 is opened at the bottom of the turntable 11, and multiple limit holes 24 are arranged in a circumferential array. During operation, the two limit rods 22 fixed to the top of the push block 21 respectively contact the inside of the slide groove 23. During the rotation of the turntable 11, the operator can drive the double cylinder 2, so that the double cylinder 2 generates a pushing force on the push block 21, causing... The limiting rod 22 compresses the slide groove 23. Whenever the turntable 11 rotates to a predetermined angle, the corresponding limiting hole 24 at the bottom of the turntable 11 will reach the top of the limiting rod 22. At this time, the two limiting rods 22 will enter the interior of the limiting hole 24 respectively. After the limiting rods 22 enter the limiting hole 24, the turntable 11 will stop rotating. Through the above structure, the height of the limiting rod 22 is controlled by the double cylinder 2, so that when the turntable 11 rotates to the predetermined angle, the limiting rod 22 is inserted into the interior of the limiting hole 24, thereby achieving the positioning of the turntable 11. This helps to improve the accuracy of the test device, enhance the practicality of the device, and reduce the difficulty of operation.

[0031] Please refer to Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, a fixed shaft 3 is fixedly connected inside the casing 1, and a fixed frame 31 is fixedly connected to the top of the fixed shaft 3. A fixed block 32 is fixedly connected to the side wall of the fixed frame 31, and a hydraulic cylinder 33 is fixedly connected to the top of the fixed block 32. A pressure rod 34 is fixedly connected to the output end of the hydraulic cylinder 33, and a pressure block 35 is ball-jointed to the bottom of the pressure rod 34. During operation, after the paper of the packaging box to be tested is placed on the top of the corresponding limit cap 16, the operator can drive the hydraulic cylinder 33 to lower the height of the pressure block 35. The pressure block 35 and the pressure rod 34 are ball-jointed. The pressure block 35 can rotate within a certain range. Finally, the paper to be tested will be clamped and fixed by the pressure block 35 and the limiting cap 16. The fixing shaft 3, the fixing frame 31, and the fixing block 32 play a supporting role. Through the above structure, the hydraulic cylinder 33 controls the height of the pressure rod 34 and the pressure block 35, thereby fixing the paper to be tested packaging box on the top of the corresponding limiting cap 16. At the same time, the ball joint relationship between the pressure rod 34 and the pressure block 35 improves the flexibility of the pressure block 35, which is conducive to improving the clamping stability of the pressure block 35 and the limiting cap 16.

[0032] Please refer to Figure 4As shown, an air injection pipe 4 is fixedly connected to the top of the push block 21, and an air delivery pipe 41 is fixedly connected to the side wall of the push block 21. An air pump 42 is fixedly connected to the end of the air delivery pipe 41 away from the push block 21. The air pump 42 is fixedly connected inside the housing 1. An air hole 43 is provided at the bottom of the turntable 11. During operation, after clamping the test paper, the operator can drive the air pump 42 and gradually increase its output power. At this time, the air pump 42 can transmit gas to the air injection pipe 4 through the air delivery pipe 41. The air injection tube 4 is located inside the air hole 43. Gas can be conducted through the air injection tube 4 to the sealing block 17, and finally to the rubber sheet 18 at the bottom of the paper sheet, causing the rubber sheet 18 to bulge under air pressure. Once the paper sheet breaks, the test is complete. Through the above structure, the air pump 42 is set to provide air pressure. By fixing the air injection tube 4 to the top of the push block 21, the air injection tube 4 and the limiting rod 22 move synchronously, so that the air pump 42 can conduct air pressure to the bottom of multiple rubber sheets 18, which enhances the practicality of the device.

[0033] Please refer to Figures 3 to 5 As shown, a collar 5 is fixedly connected to the side wall of the fixed shaft 3. During operation, the collar 5 fixed to the side wall of the fixed shaft 3 can protect the fixed shaft 3 and the turntable 11 through its own material, reducing the wear on both. Through the above structure, the collar 5 protects the fixed shaft 3 and the turntable 11, making the contact between the components closer, enhancing the sealing of the device, helping to reduce the friction coefficient between components, protecting the structural stability of the components, and extending the service life of the device.

[0034] Please refer to Figure 1 and Figure 3 As shown, a fixing ring 6 is fixedly connected to the side wall of the chassis 1, and a cover plate 61 is fixedly connected to the top of the fixing ring 6. During operation, the cover plate 61 fixed to the top of the fixing ring 6 encloses the multiple fixing cylinders 15 and the top components of the fixing cylinders 15. The cover plate 61 can protect the components by itself. Through the above structure, the fixing ring 6 and the cover plate 61 are set to cover the bottom components, which helps to avoid the relevant components being exposed to the outside for a long time, which helps to extend the service life of the device and reduce maintenance requirements.

[0035] Please refer to Figure 5 As shown, a lubrication hole 7 is provided on the side wall of the pressure rod 34, and the lubrication hole 7 penetrates the bottom of the pressure rod 34. During operation, the operator can periodically inject lubricant into the lubrication hole 7. Since the lubrication hole 7 penetrates the bottom of the pressure rod 34, the lubricant can reach the contact surface between the pressure rod 34 and the pressure block 35 through the lubrication hole 7. With the above structure, the lubrication hole 7 is provided inside the pressure rod 34, so that the operator can inject lubricant between the pressure rod 34 and the pressure block 35, which helps to prevent the components from jamming and improves the durability of the device.

[0036] During operation, the lead screw 14 fixed to the output end of the motor 13 meshes with the gear 12 fixed to the bottom of the turntable 11. The operator can drive the motor 13 to rotate the turntable 11 on top of the housing 1, thereby adjusting the angle of the turntable 11 so that different fixed cylinders 15 face the operator. The rubber sheets 18 inside the multiple fixed cylinders 15 are of different sizes, allowing the operator to test packaging boxes using the different sizes of the rubber sheets 18. Simultaneously, whenever a rubber sheet 18 is damaged, the operator can use the handle 19 to rotate the limit cap 16 until the limit cap 16 falls off the top of the corresponding fixed cylinder 15, allowing the rubber sheet 18 to be replaced. After completion, the operator can tighten the limit cap 16 back onto the top of the fixed cylinder 15. The sealing block 17 serves to support the rubber sheet 18. The two limit rods 22, fixed to the top of the push block 21, contact the inside of the slide groove 23. During the rotation of the turntable 11, the operator can drive the double cylinder 2, causing it to push against the push block 21, thus squeezing the limit rods 22 against the slide groove 23. Whenever the turntable 11 rotates to a predetermined angle, the corresponding limit hole 24 at the bottom of the turntable 11 will reach the top of the limit rod 22. At this time, the two limit rods 22 will enter the interior of the limit hole 24. After the limit rods 22 enter the limit hole 24... Turntable 11 will stop rotating. After placing the test packaging box paper sheet on top of the corresponding limit cap 16, the operator can drive hydraulic cylinder 33 to lower the height of pressure block 35. Pressure block 35 and pressure rod 34 are in a ball joint relationship, and pressure block 35 can rotate within a certain range. Finally, the test paper sheet will be clamped and fixed by pressure block 35 and limit cap 16. Fixing shaft 3, fixing frame 31, and fixing block 32 provide support. After clamping the test paper sheet, the operator can drive air pump 42 and gradually increase the output power of air pump 42. At this time, air pump 42 can transmit gas to air injection pipe 4 through air supply pipe 41. At this time, air injection pipe 4 is in air hole 43. Inside, gas can be conducted through the air injection pipe 4 to the sealing block 17, and finally to the rubber sheet 18 at the bottom of the paper, causing the rubber sheet 18 to bulge under air pressure. Once the paper breaks, the test is complete. The collar 5 fixed to the side wall of the fixed shaft 3 can protect the fixed shaft 3 and the turntable 11 through its own material, reducing the wear on both. The cover plate 61 fixed to the top of the fixed ring 6 encloses multiple fixed cylinders 15 and the top components of the fixed cylinders 15. The cover plate 61 can protect the components by itself. The staff can periodically inject lubricant into the lubrication hole 7. Since the lubrication hole 7 penetrates the bottom of the pressure rod 34, the lubricant can reach the contact surface between the pressure rod 34 and the pressure block 35 through the lubrication hole 7.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A puncture test apparatus for bursting strength testing of packaging boxes, comprising a housing (1), characterized in that: A turntable (11) is rotatably connected to the top of the chassis (1), and a gear (12) is fixedly connected to the bottom of the turntable (11). A motor (13) is fixedly connected inside the chassis (1), and a lead screw (14) is fixedly connected to the output end of the motor (13). A fixed cylinder (15) is fixedly connected to the top of the turntable (11), and multiple fixed cylinders (15) are arranged in a circumferential array. Limit caps (16) are threadedly connected to the top of the multiple fixed cylinders (15). A sealing block (17) is slidably connected to the inner side wall of the fixed cylinder (15), and a rubber sheet (18) is provided on the top of the sealing block (17). A throttle (19) is fixedly connected to the side wall of the limit cap (16).

2. The puncture test device for testing the bursting strength of packaging boxes according to claim 1, characterized in that: The internal casing (1) is fixedly connected to a double cylinder (2), and the output end of the double cylinder (2) is fixedly connected to a push block (21). The top of the push block (21) is fixedly connected to a limit rod (22), and the two limit rods (22) are arranged in a corresponding manner. The bottom of the turntable (11) is provided with a sliding groove (23), and the sliding groove (23) is set to the size of the limit rod (22). The bottom of the turntable (11) is provided with limit holes (24), and multiple limit holes (24) are arranged in a circular array.

3. The puncture test device for testing the bursting strength of packaging boxes according to claim 1, characterized in that: A fixed shaft (3) is fixedly connected inside the chassis (1), and a fixed frame (31) is fixedly connected to the top of the fixed shaft (3). A fixed block (32) is fixedly connected to the side wall of the fixed frame (31), and a hydraulic cylinder (33) is fixedly connected to the top of the fixed block (32). A pressure rod (34) is fixedly connected to the output end of the hydraulic cylinder (33), and a pressure block (35) is ball-jointed to the bottom of the pressure rod (34).

4. The puncture test device for testing the bursting strength of packaging boxes according to claim 2, characterized in that: An air injection pipe (4) is fixed to the top of the push block (21), an air delivery pipe (41) is fixed to the side wall of the push block (21), and an air pump (42) is fixed to the end of the air delivery pipe (41) away from the push block (21). The air pump (42) is fixed inside the housing (1), and an air hole (43) is opened at the bottom of the turntable (11).

5. The puncture test device for testing the bursting strength of packaging boxes according to claim 3, characterized in that: A collar (5) is fixedly connected to the side wall of the fixed shaft (3).

6. The puncture test device for testing the bursting strength of packaging boxes according to claim 1, characterized in that: A fixing ring (6) is fixedly connected to the side wall of the chassis (1), and a cover plate (61) is fixedly connected to the top of the fixing ring (6).

7. The puncture test device for testing the bursting strength of packaging boxes according to claim 3, characterized in that: The pressure rod (34) has a lubrication hole (7) on its side wall, and the lubrication hole (7) penetrates the bottom of the pressure rod (34).

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