A device for detecting wear resistance of BOPP film

Abstract

The utility model relates to a kind of BOPP film abrasion resistance detection device, to solve the current BOPP film abrasion resistance detection mode single, cannot comprehensively reflect the complex scene that film can face in actual application technical problem, including: detection mechanism, the detection mechanism includes fixedly connected on the stand upright board, rectangular slot is opened on the upright board, slidingly connected with moving block in the rectangular slot, the moving block is penetrated with connecting shaft, the connecting shaft is rotatably connected between moving block through bearing, the front end of the connecting shaft is fixedly connected with detection roller, the outside of the detection roller is fixedly connected with friction layer, reciprocating movement mechanism is arranged between the moving block and rectangular slot, the utility model has simulated BOPP film in the rolling friction working condition in winding conveying process and effectively reproduced the sliding friction scene of BOPP film in stacking storage and transportation, realizes the overall evaluation to BOPP film material dynamic friction characteristic.

Description

Technical Field

[0001] This utility model relates to the field of BOPP film testing, specifically a device for testing the abrasion resistance of BOPP film. Background Technology

[0002] BOPP film is widely used in packaging for bread, clothing, shoes, socks, and cigarette and book covers. BOPP film is prone to scratches during packaging due to friction with machinery, and also during the packing process in logistics. For cigarette and book covers, these scratches significantly affect the aesthetics and can reduce consumer purchasing desire. Therefore, the abrasion resistance of BOPP film is tested before use.

[0003] Traditional methods for testing the abrasion resistance of BOPP films are limited and cannot comprehensively reflect the complex scenarios the films may face in real-world applications. Furthermore, they can only test one BOPP film at a time, resulting in low testing efficiency. Therefore, a new technical solution is needed to address these issues. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to practical needs, and provide a BOPP film abrasion resistance testing device to solve the technical problem that the current BOPP film abrasion resistance testing method is singular and cannot fully reflect the complex scenarios that the film may face in actual applications.

[0005] To achieve the objective of this utility model, the technical solution adopted is as follows: A device for testing the abrasion resistance of BOPP film is designed, comprising: The testing mechanism includes a vertical plate fixedly connected to a base, a rectangular groove on the vertical plate, a movable block slidably connected within the rectangular groove, a connecting shaft passing through the movable block, and a rotatable connection between the connecting shaft and the movable block via a bearing. A testing roller is fixedly connected to the front end of the connecting shaft, a friction layer is fixedly connected to the outer side of the testing roller, a reciprocating movement mechanism is provided between the movable block and the rectangular groove for reciprocating movement of the testing roller to test the BOPP film, a transmission mechanism is provided between the end of the connecting shaft away from the testing roller and the vertical plate for rotation during the movement of the testing roller, and a fixing bolt passes through the bottom of the movable block, the fixing bolt is threadedly connected to the movable block, and the fixing bolt is in contact with the surface of the connecting shaft. Fixing mechanism for fixing BOPP film during testing.

[0006] Preferably, the transmission mechanism includes a connecting plate disposed at the rear end of the upright plate, the surface of the connecting plate is provided with a plurality of teeth, and a gear is fixedly connected to the end of the connecting shaft away from the detection roller, the gear meshing with the teeth.

[0007] Preferably, the reciprocating moving mechanism includes limiting grooves formed at the upper and lower ends of the inner cavity of the rectangular groove, and limiting blocks are slidably connected in both limiting grooves. A reciprocating screw is rotatably connected between the two sides of the inner cavity of one of the limiting grooves through a bearing. The limiting block is slidably sleeved on the outside of the reciprocating screw. A drive motor is fixedly installed at one end of the upright plate. The drive end of the drive motor rotates through the upright plate and is connected to the reciprocating screw through a coupling.

[0008] Preferably, the fixing mechanism includes two fixing frames disposed on the upright plate, the two fixing frames being respectively placed on the upper and lower sides of the detection roller, and a groove being provided at the end of each fixing frame away from the detection roller, the groove being rectangular, and a fixing strip being inserted into the groove.

[0009] Preferably, an adjustment groove is provided on one side of the upright plate near the fixed frame. A bidirectional lead screw is rotatably connected between the upper and lower sides of the inner cavity of the adjustment groove via a bearing. Two adjustment blocks are slidably connected in the adjustment groove. The two adjustment blocks are threaded onto the outer sides of the bidirectional lead screw, and the two adjustment blocks are fixedly connected to the two fixed frames respectively.

[0010] Preferably, the fixing strip is a rubber strip and the fixing strip is elastic.

[0011] Preferably, the two fixed frames are symmetrically distributed on the upper and lower sides of the detection roller.

[0012] Preferably, the adjustment mechanism includes a guide groove formed at the rear end of the upright plate, a guide block slidably connected in the guide groove, the guide block being fixedly connected to the connecting plate, and an electric cylinder being fixedly installed at the bottom of the inner cavity of the guide groove, the telescopic end of the electric cylinder being fixedly connected to the bottom of the guide block.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model combines a detection roller, a friction layer, a moving block, a rectangular groove, a reciprocating lead screw, a connecting shaft, a fixing bolt, teeth, gears, a drive motor, an electric cylinder, a limiting block, a limiting groove, a guide groove, and a guide block, and through a switchable mechanism design, it achieves a comprehensive evaluation of the dynamic friction characteristics of BOPP film materials, providing a precise and efficient experimental platform for the study of the wear resistance of BOPP film products.

[0014] 2. This utility model combines a fixed frame, a fixed strip, a bidirectional lead screw, an adjusting block, and an adjusting groove. When testing the abrasion resistance of BOPP film, the film is placed on the surfaces of two fixed frames near the test roller. Then, the fixed strip is inserted into the groove to tighten the BOPP film on the fixed frame surface near the test roller. By turning the bidirectional lead screw, the adjusting block moves within the adjusting groove, allowing two BOPP films to contact the friction layer on the test roller simultaneously. This enables simultaneous abrasion resistance testing of two BOPP films, improving efficiency by 50% compared to traditional abrasion resistance testing devices. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall front structure of this utility model; Figure 2 This is a schematic diagram of the overall side structure of this utility model; Figure 3 This is a schematic diagram of the overall rear structure of this utility model; Figure 4 This is a schematic diagram of the connection structure between the moving block and the detection roller of this utility model; Figure 5 This is a schematic diagram of the connection structure between the fixing frame and the fixing strip of this utility model.

[0016] In the diagram: 1. Base; 11. Vertical plate; 12. Rectangular groove; 2. Drive motor; 21. Limiting groove; 22. Limiting block; 23. Reciprocating lead screw; 3. Detection roller; 31. Friction layer; 32. Moving block; 33. Connecting shaft; 4. Adjusting groove; 41. Adjusting block; 42. Bidirectional lead screw; 5. Fixing frame; 51. Groove; 52. Fixing strip; 6. Connecting plate; 61. Tooth; 62. Gear; 63. Guide groove; 64. Guide block; 65. Electric cylinder; 7. Fixing bolt. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments: Example 1: A device for testing the abrasion resistance of BOPP film, see [link to example]. Figures 1 to 5The system includes: a testing mechanism, comprising a vertical plate 11 fixedly connected to a base 1, a rectangular groove 12 formed on the vertical plate 11, a movable block 32 slidably connected within the rectangular groove 12, a connecting shaft 33 passing through the movable block 32, and a rotatable connection between the connecting shaft 33 and the movable block 32 via a bearing; a testing roller 3 fixedly connected to the front end of the connecting shaft 33; a friction layer 31 fixedly connected to the outer side of the testing roller 3; and a reciprocating movement mechanism between the movable block 32 and the rectangular groove 12 for reciprocating movement of the testing roller 3 to test the BOPP film. The reciprocating movement mechanism includes limiting grooves 21 formed at the upper and lower ends of the inner cavity of the rectangular groove 12. Limiting blocks 22 are slidably connected within each of the two limiting grooves 21. A reciprocating lead screw 23 is rotatably connected between the two sides of the inner cavity of one of the limiting grooves 21 via bearings. The limiting block 22 is slidably sleeved on the outer side of the reciprocating lead screw 23. The surface of the reciprocating lead screw 23 is machined with two threaded grooves of the same pitch but opposite directions (usually left-hand and right-hand threads), and a smooth connection between the helical grooves is achieved through transition curves at both ends. The limiting block 22 is embedded into the helical groove by a guide device, typically using a roller. The structure uses a ball bearing or sliding bearing to reduce frictional resistance. A drive motor 2 is fixedly mounted on one end of the vertical plate 11. The drive end of the drive motor 2 rotates through the vertical plate 11 and is connected to a reciprocating lead screw 23 via a coupling. A transmission mechanism is provided between the end of the connecting shaft 33 away from the detection roller 3 and the vertical plate 11 for rotating the detection roller 3 during its movement. The transmission mechanism includes a connecting plate 6 located at the rear end of the vertical plate 11. An adjustment mechanism is provided between the connecting plate 6 and the vertical plate 11. The adjustment mechanism includes a guide groove 63 located at the rear end of the vertical plate 11, within which a guide is slidably connected. The guide block 64 is fixedly connected to the connecting plate 6. An electric cylinder 65 is fixedly installed at the bottom of the inner cavity of the guide groove 63. The telescopic end of the electric cylinder 65 is fixedly connected to the bottom of the guide block 64. Multiple teeth 61 are installed on the surface of the connecting plate 6. A gear 62 is fixedly connected to the end of the connecting shaft 33 away from the detection roller 3. The gear 62 meshes with the teeth 61. A fixing bolt 7 passes through the bottom of the moving block 32. The fixing bolt 7 is threadedly connected to the moving block 32 and contacts the surface of the connecting shaft 33. A fixing mechanism is used to fix the BOPP film to be detected.

[0018] During operation, the BOPP film to be tested for abrasion resistance is fixed by the fixing mechanism, and the BOPP film is brought into contact with the friction layer 31 of the test roller 3. In the rolling test mode, the fixing bolt 7 is turned to disengage from the connecting shaft 33, thereby releasing the constraint on the connecting shaft 33. Then, the electric cylinder 65 is started to drive the connecting plate 6 to move upward, so that the teeth 61 mesh with the gear 62. At this time, the drive motor 2 is started to drive the test roller 3 to move at a constant speed along the film surface through the reciprocating screw 23. At the same time, through the meshing of the gear 62 and the teeth 61, the test roller 3 rotates, thereby accurately simulating the rolling motion of the BOPP film during the winding and conveying process. In dynamic friction mode, when switching to sliding detection mode, the connecting shaft 33 is contacted by tightening the fixing bolt 7, and the connecting shaft 33 is limited by friction. The electric cylinder 65 is activated to drive the connecting plate 6 downward, so that the gear 62 separates from the tooth 61. At this time, the drive motor 2 drives the detection roller 3 to slide along the film surface while maintaining a stationary state, effectively reproducing the sliding friction scenario of BOPP film during stacking and storage. This dual-mode detection system, through the switchable mechanism design, realizes a comprehensive evaluation of the dynamic friction characteristics of BOPP film material, and provides a precise and efficient experimental platform for the study of the wear resistance of BOPP film products.

[0019] For details, see Figure 1 and Figure 5 The fixing mechanism includes two fixing frames 5 mounted on the upright plate 11. The two fixing frames 5 are respectively positioned on the upper and lower sides of the detection roller 3. Each fixing frame 5 has a rectangular groove 51 at its end furthest from the detection roller 3. A fixing strip 52, made of rubber and elastic, is inserted into the groove 51. The two fixing frames 5 are symmetrically distributed on the upper and lower sides of the detection roller 3. An adjusting groove 4 is provided on the side of the upright plate 11 closest to the fixing frames 5. A bidirectional lead screw 42 is rotatably connected between the upper and lower sides of the inner cavity of the adjusting groove 4 via bearings. Two adjusting blocks 41 are slidably connected within the adjusting groove 4. The two adjusting blocks 41 are fixedly connected to the two fixed frames 5 respectively, and the two adjusting blocks 42 are threaded on both sides of the double-acting screw 42. When the abrasion resistance of the BOPP film is tested, the film is placed on the surface of the two fixed frames 5 near the test roller 3. Then, the fixing strip 52 is inserted into the groove 51 to tighten the BOPP film on the surface of the fixed frame 5 near the test roller 3. Then, by turning the double-acting screw 42, the adjusting blocks 41 are guided to move in the adjusting groove 4, so that the two BOPP films can contact the friction layer 31 on the test roller 3 at the same time, and the abrasion resistance of the two BOPP films can be tested at the same time. The efficiency is improved by 50% compared with the traditional abrasion resistance testing device.

[0020] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.

[0021] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A device for testing the abrasion resistance of BOPP film, characterized in that, include: The testing mechanism includes a vertical plate (11) fixedly connected to a base (1). A rectangular groove (12) is provided on the vertical plate (11). A movable block (32) is slidably connected in the rectangular groove (12). A connecting shaft (33) passes through the movable block (32). The connecting shaft (33) and the movable block (32) are rotatably connected by a bearing. A testing roller (3) is fixedly connected to the front end of the connecting shaft (33). A friction layer (31) is fixedly connected to the outer side of the testing roller (3). A reciprocating moving mechanism is provided between the moving block (32) and the rectangular groove (12) for the reciprocating movement of the detection roller (3) to detect the BOPP film. A transmission mechanism is provided between the end of the connecting shaft (33) away from the detection roller (3) and the upright plate (11) for the detection roller (3) to rotate during the movement. A fixing bolt (7) passes through the bottom of the moving block (32). The fixing bolt (7) is threadedly connected to the moving block (32), and the fixing bolt (7) is in contact with the surface of the connecting shaft (33). Fixing mechanism for fixing BOPP film during testing.

2. The BOPP film abrasion resistance testing device as described in claim 1, characterized in that, The transmission mechanism includes a connecting plate (6) located at the rear end of the upright plate (11). An adjustment mechanism is provided between the connecting plate (6) and the upright plate (11). Multiple teeth (61) are installed on the surface of the connecting plate (6). A gear (62) is fixedly connected to one end of the connecting shaft (33) away from the detection roller (3). The gear (62) meshes with the teeth (61).

3. The BOPP film abrasion resistance testing device as described in claim 1, characterized in that, The reciprocating movement mechanism includes limiting grooves (21) opened at the upper and lower ends of the inner cavity of the rectangular groove (12). Limiting blocks (22) are slidably connected in both limiting grooves (21). A reciprocating screw (23) is rotatably connected between the two sides of the inner cavity of one of the limiting grooves (21) through a bearing. The limiting block (22) is slidably sleeved on the outside of the reciprocating screw (23). A drive motor (2) is fixedly installed at one end of the upright plate (11). The drive end of the drive motor (2) rotates through the upright plate (11) and is connected to the reciprocating screw (23) through a coupling.

4. The BOPP film abrasion resistance testing device as described in claim 1, characterized in that, The fixing mechanism includes two fixing frames (5) set on the upright plate (11). The two fixing frames (5) are respectively placed on the upper and lower sides of the detection roller (3). The two fixing frames (5) are provided with a groove (51) at the end away from the detection roller (3). The groove (51) is rectangular and a fixing strip (52) is inserted into the groove (51).

5. The BOPP film abrasion resistance testing device as described in claim 4, characterized in that, An adjustment groove (4) is provided on one side of the upright plate (11) near the fixed frame (5). A bidirectional lead screw (42) is rotatably connected between the upper and lower sides of the inner cavity of the adjustment groove (4) through a bearing. Two adjustment blocks (41) are slidably connected in the adjustment groove (4). The two adjustment blocks (41) are respectively threaded on the outer sides of the bidirectional lead screw (42). The two adjustment blocks (41) are respectively fixedly connected to the two fixed frames (5).

6. The BOPP film abrasion resistance testing device as described in claim 4, characterized in that, The fixing strip (52) is a rubber strip and the fixing strip (52) is elastic.

7. The BOPP film abrasion resistance testing device as described in claim 4, characterized in that, The two fixed frames (5) are symmetrically distributed on the upper and lower sides of the detection roller (3).

8. The BOPP film abrasion resistance testing device as described in claim 2, characterized in that, The adjustment mechanism includes a guide groove (63) opened at the rear end of the upright plate (11), a guide block (64) is slidably connected in the guide groove (63), the guide block (64) is fixedly connected to the connecting plate (6), and an electric cylinder (65) is fixedly installed at the bottom of the inner cavity of the guide groove (63), and the telescopic end of the electric cylinder (65) is fixedly connected to the bottom of the guide block (64).

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