Paper tape wear resistance testing machine

Abstract

The invention discloses a paper tape wear resistance testing machine, which relates to the technical field of wear resistance testing equipment, and comprises a winding assembly mounted at one end of a rack and used for winding a paper tape. According to the wear resistance testing machine for the paper tape, the cooling mechanism, the cooling plate and the leveling roller extrude and cool the paper tape, and meanwhile, the swing plate rotates and swings back and forth to generate airflow, so that residual heat on the paper tape is taken away by the airflow, and the influence on the test performance of the paper tape due to expansion of the surface of the paper tape caused by friction is avoided; fibers can be helped to recover to the original state through cooling, the possibility of breakage of the paper tape is reduced, when the paper tape is accidentally broken, the breakage condition of the paper tape is reflected through the triggering mechanism, the limiting mechanism is triggered to press the broken and retracted end of the paper tape, the broken end of the paper tape is prevented from continuing to retract, the downtime is shortened, the test is rapidly recovered, and the test efficiency is improved. Abnormal abrasion of the workpiece or long-time interruption of data recording can be reduced, the accuracy of a test result is ensured, and the influence of test delay on the whole progress is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of wear-resistant testing equipment, in particular to a paper tape wear-resistant testing machine. Background Art

[0002] The paper tape abrasion tester is a specialized device used to test the surface wear resistance of materials. It is widely used in testing the wear resistance of materials such as plastics, coatings, paints, leather, and textiles. Its working principle is to rub a paper tape against the sample surface at a certain pressure and speed to simulate the wear conditions in actual use and evaluate the wear resistance of the material. By setting the number of frictions, speed, and pressure, the equipment can accurately reproduce the wear behavior under different working conditions. The patent announcement number is CN205404318U. A paper tape wear tester comprises a base and a bracket fixed on the base, and also comprises a paper winding wheel, a transition wheel group and a paper placing wheel fixedly connected to the bracket and arranged in sequence from left to right above the base. A swing arm is provided below the transition wheel group and the middle portion thereof is passed through the bracket. A pressure piece is provided at the right end of the swing arm, and a weight platform for measuring the pressure of the pressure piece is provided at the left end thereof. The bottom end of the pressure piece passes through a limit frame arranged below the pressure piece. A liftable test platform is provided below the limit frame on the base. A paper tape is wound around the paper placing wheel, and one end of the paper tape passes through the bottom end of the pressure piece, the swing arm, the transition wheel group and the paper winding wheel in sequence. The bottom end of the pressure piece presses the paper tape against the sample on the test platform, and the paper winding wheel drives the paper winding tape to move the paper tape and rub the sample. The device is small in size and has the advantages of optimized structure and convenient operation. According to the above-mentioned existing patents, it can be known that the existing paper tape wear tester presses the paper tape against the sample surface through the bottom end of the pressure piece, and drives the paper tape to move and rub the sample by winding the paper tape. In some tests that require the paper tape to move quickly, the paper tape moves too fast, which will generate a certain amount of heat due to friction, causing the temperature of the paper tape after friction to rise. The high temperature destroys the fiber structure of the paper tape, resulting in a decrease in strength and easy breakage. After the paper tape breaks, the end of the paper tape close to the paper placing component will retract due to inertia and be blocked by the bracket and buffer roller. It cannot quickly respond to the breakage and the broken end of the paper tape is limited, resulting in the staff being unable to quickly pull the broken end of the paper tape, extending the downtime and affecting the continuity of the detection process. For this reason, we have proposed a paper tape wear tester. Summary of the Invention

[0003] The object of the present invention is to provide a paper tape wear tester to solve the problems raised by the above background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: a paper tape wear tester, comprising a winding assembly mounted at one end of a frame for winding a paper tape, a paper unwinding assembly mounted at the other end of the frame away from the winding assembly, a mounting frame and a support platform assembly mounted in the middle of the frame via bolts, and a connecting bracket mounted on one side of the mounting frame via a rotating shaft; A mounting plate is fixed below the connecting bracket, a trigger mechanism for driving the paper tape to run after it breaks is installed on one side of the mounting plate, and a limiting mechanism for clamping the end of the broken paper tape and connected to the trigger mechanism is installed on the inner side of the mounting plate; The cooling plate, cooling channel and cooling mechanism assist in cooling the paper tape and squeeze and flatten the wrinkles of the paper tape to prevent the paper tape from breaking.

[0005] Furthermore, a buffer roller for tensioning the paper tape is installed on the inner side of the mounting frame through a bearing, and a paper tape pressing component for making the paper tape close to the surface of the workpiece to be measured is installed on one side of the connecting bracket.

[0006] Furthermore, the trigger mechanism includes a support plate fixed to one side of the mounting plate for supporting the paper tape, an inner wall of the mounting plate away from the support plate is provided with an inclined groove, and a slide rod is fixed inside the inclined groove; The outer side of the slide rod is slidably sleeved with a slide shaft and a return spring, and a sliding connection structure is formed between the slide shaft and the inclined groove. The outer side of the slide shaft is movably sleeved with a supporting roller for squeezing the paper tape.

[0007] Furthermore, the limiting mechanism includes a lifting shaft located in the inner wall of the mounting plate and connected via a bearing, and one end of the lifting shaft located outside the mounting plate is fixedly sleeved with a lifting cylinder for driving the lifting shaft to rotate; The inner sliding sleeve of the mounting plate near the upper end is connected to a traction rod for driving the lifting cylinder to rotate, the top of the traction rod is installed with a counterweight block that sinks due to gravity, and the outer sliding sleeve of the lifting shaft is connected to a pressure plate for pressing the paper tape.

[0008] Furthermore, the outer surface of the lifting cylinder is provided with a first lifting groove in a spiral structure for the end of the traction rod to slide and lift, and the outer surface of the lifting shaft is provided with a second lifting groove in a spiral structure for the pressure plate to slide and lift; The spiral directions of the No. 1 lifting groove and the No. 2 lifting groove are opposite, and the rising directions of the two are away from each other. The traction rod is in a "" shape structure, and the bottom end of the traction rod close to the sliding shaft is fixedly connected to an extrusion block with a triangular cross-section.

[0009] Furthermore, a vertical frame is fixed above the frame on one side of the winding assembly, and a side frame is fixedly connected to the vertical frame on one side. A cooling plate for assisting cooling and flattening wrinkles of the paper tape is installed on the side of the vertical frame away from the side frame through a connecting plate, and the cooling plate is set to a semicircular structure. A guide roller for guiding the paper tape is installed on the surface of the side frame close to the cooling plate through a bearing.

[0010] Furthermore, the outer side of the cooling plate is connected to a delivery pump for circulating coolant through a hose, and a cooling box connected to the delivery pump is installed on the upper surface of the frame. The cooling box cools the incoming coolant. The cooling box is used to store the coolant and is made of high thermal conductivity copper material. A cooling channel for the coolant to flow is provided inside the cooling plate.

[0011] Furthermore, a cooling mechanism for assisting heat dissipation is installed on the surface of the side frame and the vertical frame. The cooling mechanism includes a swinging plate for fanning the airflow installed on the surface of the side frame through a bearing. A leveling roller for squeezing and guiding the paper tape is installed on one side of the vertical frame below the cooling plate through a bearing.

[0012] Furthermore, one end of the leveling roller is fixedly connected to a driving synchronous wheel through a connecting shaft, a turntable is installed on the side of the side frame close to the swing plate through a bearing, and one end of the turntable is fixedly connected to a driven synchronous wheel through a connecting shaft.

[0013] Furthermore, the outer sides of the active synchronous wheel and the driven synchronous wheel are sleeved with synchronous belts for driving synchronous rotation, the surface edge of the turntable is fixed with a round rod for pulling the swing plate to swing back and forth, and the inner side of the swing plate is provided with a traction groove for the round rod to slide.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This paper tape wear tester is equipped with a cooling mechanism, cooling plates, and leveling rollers to squeeze and cool the paper tape. Simultaneously, the swing plate rotates back and forth, generating airflow that removes residual heat from the paper tape, preventing surface expansion due to friction that could affect test performance. Cooling helps restore the fibers to their original state, reducing the possibility of breakage. Cooling and extrusion also flatten the paper tape, reducing deviations caused by wrinkles that could affect test results. 2. This paper tape wear tester can trigger a mechanism to respond to the breakage if the tape accidentally breaks. The triggering mechanism also compresses the retracted end of the tape to prevent it from continuing to retract and causing it to become entangled or stuck on other components, potentially damaging them. This allows staff to quickly and easily handle the broken tape, reducing downtime and allowing for rapid testing resumption. This reduces abnormal wear on the workpiece or prolonged interruptions in data recording, ensuring the accuracy of test results and minimizing the impact of test delays on overall progress. 3. The paper tape wear tester generates airflow through the swing plate to disturb the air, which can prevent dust particles in the air from directly stagnating on the upper surface of the paper tape, causing local bulges or depressions on the paper tape, and can effectively improve the efficiency and smoothness of the paper tape winding and rewinding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the frame structure of the present invention; Figure 3 This is a schematic diagram of the connecting bracket structure of the present invention; Figure 4 Schematic diagram of the trigger mechanism structure of the present invention; Figure 5 This is a schematic diagram of the internal structure of the mounting plate of the present invention; Figure 6 This is a schematic diagram of the traction rod structure of the present invention; Figure 7 This is a schematic diagram of the structure of the No. 1 lifting tank of the present invention; Figure 8 This is a schematic diagram of the cooling plate structure of the present invention; Figure 9 This is a schematic diagram of the cooling mechanism structure of the present invention; Figure 10 This is a schematic diagram of the internal structure of the swing plate of the present invention; Figure 11 This is a schematic diagram of the internal structure of the cooling and hardening device of the present invention; Figure 12 This is a schematic diagram of the cooling channel structure of the present invention.

[0016] Figure: 1, frame; 2, winding assembly; 3, paper placing assembly; 4, mounting frame; 5, support platform assembly; 6, cooling mechanism; 601, swing plate; 602, turntable; 603, leveling roller; 604, synchronous belt; 605, active synchronous wheel; 606, driven synchronous wheel; 7, buffer roller; 8, connecting bracket; 9, trigger mechanism; 901, supporting roller; 902, return spring; 903, chute; 904, slide bar; 905, slide shaft; 906, support plate; 10, cooling mechanism Cooling channel; 11. Paper tape pressing assembly; 12. Mounting plate; 13. Connecting plate; 14. Stand; 15. Cooling box; 16. Traction trough; 17. Limiting mechanism; 1701. Lifting shaft; 1702. Lifting cylinder; 1703. Traction rod; 1704. Counterweight; 1705. Pressing plate; 18. Round rod; 19. Extrusion block; 20. Lifting trough No. 1; 21. Lifting trough No. 2; 22. Delivery pump; 23. Hose; 24. Cooling plate; 25. Side frame; 26. Guide roller. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 3 The present invention provides a technical solution: a paper tape wear resistance testing machine, comprising a winding assembly 2 for winding a paper tape installed at one end of a frame 1, a paper placing assembly 3 installed at the other end of the frame 1 away from the winding assembly 2, a mounting frame 4 and a support platform assembly 5 are installed in the middle of the frame 1 by bolts, a buffer roller 7 for tensioning the paper tape is installed on the inner side of the mounting frame 4 through a bearing, a connecting bracket 8 is installed on one side of the mounting frame 4 through a rotating shaft, and a paper tape pressing assembly 11 is installed on one side of the connecting bracket 8 to make the paper tape close to the surface of the workpiece to be measured.

[0019] During specific implementation, when using paper tape to perform wear resistance test on the workpiece, the workpiece is placed on the surface of the support table assembly 5 and limited, and the winding assembly 2 is driven by the electric drive system of the testing machine itself to wind up, thereby pulling the paper tape to move, and the paper tape is pulled out from the paper placing assembly 3, passing through the buffer roller 7, and the buffer roller 7 tensions the paper tape. The connecting bracket 8 limits and supports the paper tape again, and then the paper tape passes through the paper tape pressing assembly 11, and finally reaches the winding assembly 2. The paper tape pressing assembly 11 brings the friction surface of the paper tape close to the surface of the workpiece. Through the traction of the winding assembly 2, the paper tape moves and rubs on the surface of the workpiece, thereby testing the wear resistance of the workpiece surface coating and whether the test coating is easy to fall off or break under friction.

[0020] See Figure 2-Figure 5 It can be seen that a mounting plate 12 is fixed below the connecting bracket 8. A trigger mechanism 9 is installed on one side of the mounting plate 12, which is driven to operate after the paper tape breaks. The trigger mechanism 9 includes a support plate 906 fixed to one side of the mounting plate 12 for supporting the paper tape. An inclined groove 903 is formed on the inner wall of the mounting plate 12 on the side away from the support plate 906. A slide rod 904 is fixed inside the inclined groove 903. The outer side of the slide bar 904 is slidably sleeved with a slide shaft 905 and a return spring 902, and a sliding connection structure is formed between the slide shaft 905 and the inclined groove 903. The outer side of the slide shaft 905 is movably sleeved with a supporting roller 901 for squeezing the paper tape. The supporting roller 901 is supported by the tension generated by the tension of the paper tape, thereby driving the slide shaft 905 to slide and rise in the inclined groove 903 along the outer side of the slide bar 904, so that the supporting roller 901 is located on the upper surface of the paper tape. The elastic coefficient of the return spring 902 can be set according to the tension coefficient of the paper tape, and the elastic coefficient of the return spring 902 can be less than the tension coefficient of the paper tape.

[0021] When the paper tape is pulled out from the buffer roller 7, it passes through the top of the support plate 906 and finally passes through the bottom of the supporting roller 901, and the paper tape is tightened by the winding component 2. Then the tension of the paper tape squeezes and supports the supporting roller 901, so that the supporting roller 901 drives the slide shaft 905 to slide obliquely upward in the inclined groove 903 and squeeze the return spring 902. The return spring 902 contracts. The tension of the paper tape is greater than the elastic coefficient of the return spring 902. When the paper tape moves normally, the return spring 902 is in a compressed state. When the paper tape rubs and breaks at the paper tape pressing component 11, the paper tape loses its tension and the supporting roller 901 loses the supporting force of the paper tape, so that the return spring 902 rebounds and pushes the slide shaft 905 to slide on the outside of the slide rod 904, so that the supporting roller 901 and the slide shaft 905 return to their original position, reflecting the paper tape breakage.

[0022] See Figure 3-Figure 7 As can be seen, a limiting mechanism 17 connected to the trigger mechanism 9 for clamping the end of the broken paper tape is installed on the inner side of the mounting plate 12. The limiting mechanism 17 includes a lifting shaft 1701 located in the inner wall of the mounting plate 12 and connected by a bearing. The end of the lifting shaft 1701 located outside the mounting plate 12 is fixedly sleeved with a lifting cylinder 1702 that drives the lifting shaft 1701 to rotate. The inner sliding sleeve of the mounting plate 12 near the upper end is connected to a traction rod 1703 for driving the lifting cylinder 1702 to rotate, and the top of the traction rod 1703 is installed with a counterweight block 1704 that sinks due to gravity. The outer sliding sleeve of the lifting shaft 1701 is connected to a pressure plate 1705 for pressing the paper tape, and the contact surface between the pressure plate 1705 and the paper tape is provided with rubber bumps distributed at equal intervals to increase friction.

[0023] During specific implementation, after the supporting roller 901 and the sliding shaft 905 return to their original positions, the sliding shaft 905 squeezes the inclined surface of the squeezing block 19, so that the squeezing block 19 lifts the traction rod 1703 upward, and one end of the traction rod 1703 interacts and squeezes the lifting cylinder 1702 in the No. 1 lifting groove 20, driving the lifting cylinder 1702 to rotate clockwise, and then the lifting cylinder 1702 drives the lifting shaft 1701 to rotate clockwise, and the lifting shaft 1701 drives the No. 2 lifting groove 21 to squeeze the inner wall of the pressing plate 1705, so that the protruding part of the inner wall of the pressing plate 1705 slides along the No. 2 lifting groove 21, and the pressing plate 1705 moves downward, so that the rubber protrusion below is pressed on the surface of the paper tape, which can prevent the paper tape from sliding; When the supporting roller 901 is pushed up by the taut paper tape, the counterweight block 1704 can drive the traction rod 1703 to slide downward through the action of gravity. By resetting the traction rod 1703 and the extrusion block 19, the pressure plate 1705 can be lifted away from the paper tape without affecting the normal movement of the paper tape.

[0024] See Figure 5-Figure 7 It can be seen that the outer surface of the lifting cylinder 1702 is provided with a No. 1 lifting groove 20 with a spiral structure for the end of the traction rod 1703 to slide and lift, and the outer surface of the lifting shaft 1701 is provided with a No. 2 lifting groove 21 with a spiral structure for the pressure plate 1705 to slide and lift, and the spiral directions of the No. 1 lifting groove 20 and the No. 2 lifting groove 21 are opposite, and the rising directions of the two are away from each other. The traction rod 1703 is a "7"-shaped structure, and the traction rod 1703 is fixedly connected to the bottom end of the sliding shaft 905 with an extrusion block 19 with a triangular cross-section.

[0025] During specific implementation, since the spiral directions of the No. 1 lifting groove 20 and the No. 2 lifting groove 21 are opposite, the pressure plate 1705 moves downward on the outside of the lifting shaft 1701, driving the pressure plate 1705 to quickly descend and fit into the support plate 906, and compressing the broken and retracted paper tape, which can prevent the broken end of the paper tape from continuing to retract, causing the paper tape to be entangled or stuck on other components, causing damage to other components. At the same time, it is convenient for the staff to deal with the broken paper tape in a timely and rapid manner, reduce downtime, and quickly resume testing, which can reduce abnormal wear on the workpiece or long-term interruption of data recording, ensure the accuracy of the test results, and reduce the impact of test delays on the overall progress.

[0026] See Figure 1 、 Figure 8 、 Figure 9 and Figure 11It can be seen that a vertical frame 14 is fixed above the frame 1 on one side of the winding component 2, and a side frame 25 is fixedly connected to one side of the vertical frame 14. A cooling plate 24 for assisting cooling and flattening the wrinkles of the paper tape is installed on the side of the vertical frame 14 away from the side frame 25 through a connecting plate 13, and the cooling plate 24 is set to a semicircular structure. A guide roller 26 for guiding the paper tape is installed on the surface of the side frame 25 close to the cooling plate 24 through a bearing.

[0027] In specific implementation, during the paper tape transmission process, the cooling plate 24 contacts the paper tape to cool the paper tape that generates frictional heat, and at the same time, the guide roller 26 guides the paper tape to ensure stable transmission of the paper tape.

[0028] See Figure 2 、 Figure 8 、 Figure 9 、 Figure 11 and Figure 12 It can be seen that the outer side of the cooling plate 24 is connected to a delivery pump 22 for circulating the coolant through a hose 23. A cooling box 15 connected to the delivery pump 22 is installed on the upper surface of the frame 1. The cooling box 15 cools the incoming coolant. The cooling box 15 is used to store the coolant and is made of copper material with high thermal conductivity. A cooling channel 10 for the coolant to flow is provided inside the cooling plate 24.

[0029] During specific implementation, when the paper tape passes through the inner side of the cooling plate 24, the delivery pump 22 delivers the coolant in the cooling box 15 into the cooling channel 10 to reduce the temperature of the cooling plate 24. The cooling plate 24 absorbs the heat generated by the friction on the paper tape. At the same time, the delivery pump 22 drives the coolant to circulate through the hose 23. When the paper tape is heated, its fibers will expand or deform. The cooling plate 24 and the leveling roller 603 squeeze and cool the paper tape. Cooling can help the fibers return to their original state, thereby reducing the offset caused by wrinkles, which affects the accuracy of the test results. At the same time, it prevents the paper tape from accidentally breaking due to overheating, improves the durability of the paper tape, and reduces the test cost.

[0030] See Figures 8-10 It can be seen that the surfaces of the side frame 25 and the vertical frame 14 are installed with a cooling mechanism 6 for auxiliary heat dissipation. The cooling mechanism 6 includes a swing plate 601 for fanning the airflow, which is installed on the surface of the side frame 25 through a bearing. A leveling roller 603 for squeezing and guiding the paper tape is installed on the side of the vertical frame 14 below the cooling plate 24 through a bearing. The leveling roller 603 is in contact with the inner arc surface of the cooling plate 24. One end of the leveling roller 603 is fixedly sleeved with an active synchronous wheel 605 through a connecting shaft. A turntable 602 is installed on the side of the side frame 25 close to the swing plate 601 through a bearing. One end of the turntable 602 is fixedly connected to a driven synchronous wheel 606 through a connecting shaft, and the outer sides of the active synchronous wheel 605 and the driven synchronous wheel 606 are connected to drive the synchronous rotation of a synchronous belt 604. The surface edge of the turntable 602 is fixed with a round rod 18 that pulls the swing plate 601 to swing back and forth. The inner side of the swing plate 601 is provided with a traction groove 16 for the sliding of the round rod 18, and the inner side of the leveling roller 603 is provided with a paper plugging groove for pulling the plugged paper.

[0031] During specific implementation, since a paper insertion slot is provided on the inner side of the leveling roller 603, before the test work, one end of the paper tape can be inserted into the paper insertion slot and the leveling roller 603 can be rotated to pass the paper tape through the gap between the cooling plate 24 and the leveling roller 603. After the cooling plate 24 assists in cooling, the tension of the paper tape can be used to drive the leveling roller 603 to rotate, and the leveling roller 603 then drives the active synchronous wheel 605 to rotate. The active synchronous wheel 605 pulls the driven synchronous wheel 606 to rotate simultaneously through the synchronous belt 604, and the driven synchronous wheel 606 drives the turntable 602 to rotate, so that the turntable 602 drives the round rod 18 to move along a circular trajectory. The round rod 18 slides in the traction groove 16, driving the swing plate 601 to rotate and swing back and forth, generating airflow, so that the airflow takes away the residual heat on the paper tape, thereby preventing the expansion of the paper tape surface from affecting the test performance of the paper tape, and reducing the possibility of the paper tape breaking. In addition, the airflow generated by the swing plate 601 can prevent dust particles in the air from directly stagnating on the upper surface of the paper tape, causing local bulges or depressions on the paper tape, which can effectively improve the efficiency and smoothness of the winding and reeling operation of the paper tape.

[0032] In summary, when using the paper tape wear tester, the winding component 2 winds the paper tape, and the paper release component 3 releases the paper tape. The paper tape moves through the traction of the winding component 2, and the paper tape pressing component 11 makes the paper tape close to the surface of the workpiece for wear resistance testing. At the same time, the heat generated by the friction on the paper tape is taken away by the cooling mechanism 6 and the cooling plate 24 to prevent the paper tape from breaking due to heat or wrinkles, and the cooling mechanism 6 drives the air flow to reduce the situation where dust particles directly stagnate on the upper surface of the paper tape, thereby improving the winding efficiency. When the paper tape breaks, the trigger mechanism 9 can drive the limiting mechanism 17 to mechanically react to the broken paper tape and clamp the broken end of the paper tape to prevent the paper tape from directly retracting to the paper release component 3, thereby reducing downtime, facilitating the staff to quickly handle the broken paper tape, and improving the working efficiency of the paper tape wear tester. The content not described in detail in this description belongs to the existing technology known to professional and technical personnel in this field.

Claims

1. A paper tape wear tester, characterized by: The invention comprises a winding assembly (2) for winding a paper tape installed at one end of a frame (1); a paper placing assembly (3) is installed at the other end of the frame (1) away from the winding assembly (2); a mounting frame (4) and a support platform assembly (5) are installed in the middle of the frame (1) via bolts; a connecting bracket (8) is installed on one side of the mounting frame (4) via a rotating shaft; A mounting plate (12) is fixed below the connecting bracket (8), a trigger mechanism (9) for driving the paper tape to run after it breaks is mounted on one side of the mounting plate (12), and a limiting mechanism (17) for clamping the end of the broken paper tape and connected to the trigger mechanism (9) is mounted on the inner side of the mounting plate (12); The cooling plate (24), the cooling channel (10) and the cooling mechanism (6) assist in cooling the paper tape and squeeze and flatten the wrinkles of the paper tape to prevent the paper tape from breaking.

2. A paper tape wear tester according to claim 1, characterized in that: A buffer roller (7) for tensioning the paper tape is installed on the inner side of the mounting frame (4) via a bearing, and a paper tape pressing assembly (11) for bringing the paper tape close to the surface of the workpiece to be measured is installed on one side of the connecting bracket (8).

3. The paper tape wear tester according to claim 1, characterized in that: The trigger mechanism (9) includes a support plate (906) fixed to one side of the mounting plate (12) for supporting the paper tape, an inclined groove (903) is provided on the inner wall of the mounting plate (12) away from the support plate (906), and a slide rod (904) is fixed inside the inclined groove (903); The outer side of the slide rod (904) is slidably sleeved with a slide shaft (905) and a return spring (902), and a sliding connection structure is formed between the slide shaft (905) and the inclined groove (903). The outer side of the slide shaft (905) is movably sleeved with a supporting roller (901) for squeezing the paper tape.

4. The paper tape wear tester according to claim 1, characterized in that: The limiting mechanism (17) comprises a lifting shaft (1701) located in the inner wall of the mounting plate (12) and connected via a bearing, wherein one end of the lifting shaft (1701) located outside the mounting plate (12) is fixedly sleeved with a lifting cylinder (1702) for driving the lifting shaft (1701) to rotate; The inner sliding sleeve of the mounting plate (12) near the upper end is connected to a traction rod (1703) for driving the lifting cylinder (1702) to rotate, and a counterweight block (1704) that sinks due to gravity is installed on the top of the traction rod (1703). The outer sliding sleeve of the lifting shaft (1701) is connected to a pressure plate (1705) for pressing the paper tape.

5. The paper tape wear tester according to claim 4, characterized in that: The outer surface of the lifting cylinder (1702) is provided with a first lifting groove (20) having a spiral structure for the end of the traction rod (1703) to slide and rise, and the outer surface of the lifting shaft (1701) is provided with a second lifting groove (21) having a spiral structure for the pressure plate (1705) to slide and rise; The spiral directions of the No. 1 lifting groove (20) and the No. 2 lifting groove (21) are opposite, and the rising directions of the two are away from each other. The traction rod (1703) has a "7"-shaped structure. The bottom end of the traction rod (1703) close to the sliding shaft (905) is fixedly connected to an extrusion block (19) with a triangular cross section.

6. The paper tape wear tester according to claim 1, characterized in that: The frame (1) is fixed with a vertical frame (14) above one side of the winding assembly (2), and one side of the vertical frame (14) is fixedly connected to a side frame (25). A cooling plate (24) for assisting cooling and flattening wrinkles of the paper tape is installed on the side of the vertical frame (14) away from the side frame (25) through a connecting plate (13), and the cooling plate (24) is set as a semicircular structure. A guide roller (26) for guiding the paper tape is installed on the surface of one side of the side frame (25) close to the cooling plate (24) through a bearing.

7. The paper tape wear tester according to claim 6, characterized in that: The outer side of the cooling plate (24) is connected to a delivery pump (22) for circulating the coolant through a hose (23). A cooling box (15) connected to the delivery pump (22) is installed on the upper surface of the frame (1). The cooling box (15) cools the incoming coolant. The cooling box (15) is used to store the coolant and is made of a copper material with high thermal conductivity. A cooling channel (10) for the coolant to flow is provided inside the cooling plate (24).

8. The paper tape wear tester according to claim 6, characterized in that: A cooling mechanism (6) for assisting heat dissipation is installed on the surface of the side frame (25) and the vertical frame (14). The cooling mechanism (6) includes a swing plate (601) for fanning airflow, which is installed on the surface of the side frame (25) through a bearing. A leveling roller (603) for squeezing and guiding the paper tape is installed on one side of the vertical frame (14) below the cooling plate (24) through a bearing.

9. The paper tape wear tester according to claim 8, characterized in that: One end of the leveling roller (603) is fixedly sleeved with a driving synchronous wheel (605) via a connecting shaft, and a turntable (602) is mounted on a side of the side frame (25) close to the swing plate (601) via a bearing, and one end of the turntable (602) is fixedly sleeved with a driven synchronous wheel (606) via a connecting shaft.

10. The paper tape wear tester according to claim 9, characterized in that: The outer sides of the active synchronous wheel (605) and the driven synchronous wheel (606) are sleeved with a synchronous belt (604) for driving synchronous rotation. A round rod (18) for pulling the swing plate (601) to swing back and forth is fixed on the surface edge of the turntable (602). A traction groove (16) for the round rod (18) to slide is provided on the inner side of the swing plate (601).

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