An eraser abrasion resistance detection device

Abstract

The utility model discloses a kind of eraser wear resistance detection devices, including bottom plate, paper locking mechanism, first linear driver, eraser mounting mechanism, weight, support plate, lifting mechanism, brush mechanism and second linear driver;Paper locking mechanism is used for horizontal locking paper, slidingly connected on the upside of bottom plate, by first linear driver drive;Eraser mounting mechanism includes sleeve compatible with eraser, and tray fixedly connected on the upper end of sleeve, weight is placed on tray, sleeve vertically penetrates support plate, and is slidably connected with support plate;Brush mechanism includes sliding seat, motor and brush roll, and second linear driver drives sliding seat, to make brush roll move to between paper and eraser, or leave from between paper and eraser.The utility model proposes a kind of eraser wear resistance detection device, can clean the rubber crumbs between eraser and paper, improve test accuracy.

Description

Technical Field

[0001] This utility model relates to the field of eraser testing technology, and in particular to an eraser abrasion resistance testing device. Background Technology

[0002] Erasers require abrasion resistance testing during development to evaluate their wear resistance performance. Existing abrasion resistance testing devices consist of a paper locking mechanism, an eraser locking mechanism, weights, and a drive mechanism. During testing, the paper locking mechanism locks the paper, and the eraser locking mechanism locks the eraser to be tested. The weights apply a constant downward pressure to the eraser, causing the lower end of the eraser to press against the upper side of the paper. The drive mechanism drives the paper to reciprocate, causing friction between the lower end of the eraser and the paper to test the eraser's abrasion resistance. However, existing abrasion resistance testing devices often overlook the long strips of eraser shavings produced during eraser friction. These shavings roll back and forth between the paper and the eraser, affecting the contact between them and thus the test results. Utility Model Content

[0003] To address the shortcomings of existing abrasion resistance testing devices that cannot clean eraser shavings between the eraser and paper, thus affecting test results, this invention proposes an eraser abrasion resistance testing device that can clean eraser shavings between the eraser and paper, thereby improving test accuracy.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: An eraser abrasion resistance testing device includes a base plate, a paper locking mechanism, a first linear actuator, an eraser mounting mechanism, weights, a support plate, a lifting mechanism, a brush mechanism, and a second linear actuator. The paper locking mechanism is used to horizontally lock the paper, is slidably connected to the upper side of the base plate, and is driven by the first linear driver; The eraser mounting mechanism includes a sleeve that fits the eraser, a tray fixedly connected to the upper end of the sleeve, a weight placed on the tray, the sleeve vertically penetrating a support plate and slidably connected to the support plate; a lifting mechanism can drive the support plate to move upward so that the eraser leaves the paper. The brush mechanism includes a sliding seat, a motor, and a brush roller. The sliding seat is slidably connected to the upper side of the base plate, and the motor is fixedly connected to the upper side of the base plate and connected to the brush roller. The lower side of the brush roller is adapted to the height of the paper. A second linear driver drives the sliding seat to move the brush roller between the paper and the eraser, or away from the paper and the eraser.

[0005] With the above settings, during testing, the lifting mechanism can drive the eraser upwards away from the paper, and the brush roller can move between the eraser and the paper to clean the eraser shavings on the eraser and the paper, so that when the eraser rubs against the paper, the contact between the eraser and the paper is better, thus improving the accuracy of the abrasion resistance test.

[0006] Furthermore, the paper locking mechanism includes a support base, a pressure plate, and an electric push rod. The support base is slidably connected to the upper side of the base plate, the pressure plate is positioned above the support base, and the electric push rod is vertically mounted on the support base and connected to the pressure plate.

[0007] With the above setup, the electric push rod presses the paper firmly onto the support base via the pressure plate.

[0008] Furthermore, the lifting mechanism includes a bracket, a telescopic guide, a guide plate, a connecting plate, and rollers. The bracket is fixedly connected to the base plate. The upper side of the support plate is connected to the bracket via a vertically arranged telescopic guide. One end of the support plate extends horizontally towards the sliding seat and is fixedly connected to the aforementioned guide plate. The guide plate includes an inclined portion and a horizontal portion. The inclined portion, away from the support plate, is inclined upwards and fixedly connected to the horizontal portion. The rollers are rotatably connected above the sliding seat via the connecting plate. The detection device has a chip removal state and a detection state. In the detection state, the rollers are located below the horizontal portion, and the eraser is in contact with the paper surface. In the chip removal state, the rollers are located below the support plate, and the brush roller is located between the eraser and the paper.

[0009] With the above configuration, when the second linear actuator drives the sliding seat to move, the sliding seat is connected to the support plate through the lifting mechanism, and the support plate automatically moves up and down accordingly. That is, the support plate and the sliding seat share the second linear actuator as the power source, making the structure of the detection device more compact.

[0010] Furthermore, the support also includes a top plate and a connecting rod. The top plate is fixedly connected to the bottom plate through the connecting rod. The top plate is horizontally positioned above the support plate, and the support plate is connected to the top plate through a telescopic guide.

[0011] Furthermore, the telescopic guide includes a guide sleeve and a guide rod. The guide sleeve is vertically fixedly connected to the lower side of the top plate, the upper end of the guide rod is slidably connected in the guide sleeve, and the lower end of the guide rod is fixedly connected to the support plate.

[0012] Furthermore, the testing device also includes a guide rail, with the sliding seat and paper locking mechanism slidably connected to both ends of the guide rail.

[0013] The above settings improve the stability of the movement of the sliding block and the paper locking mechanism.

[0014] Furthermore, there are two pressure plates, and a detection gap is formed between the two pressure plates, which is parallel to the guide rail. The axis of the brush roller is parallel to the guide rail, and the end of the brush roller faces the detection gap. The paper enters and exits through one end of the detection gap.

[0015] With the above settings, the brush roller will not come into contact with the pressure plate as it moves to the top of the paper. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the detection device in an embodiment.

[0017] Figure 2 This is a side view of the detection device in an embodiment.

[0018] Figure 3 This is a schematic diagram of the detection state of the detection device in an embodiment.

[0019] Figure 4 This is a schematic diagram of the chip removal state of the detection device in an embodiment. Detailed Implementation

[0020] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0021] like Figures 1 to 4 An eraser abrasion resistance testing device includes a base plate 3, a paper locking mechanism 4, a first linear actuator 5, an eraser mounting mechanism 6, a weight 7, a support plate 15, a lifting mechanism 8, a brush mechanism 9, and a second linear actuator 10. The paper locking mechanism 4 is used to horizontally lock the paper, and is slidably connected to the upper side of the base plate 3 and driven by the first linear driver 5; the eraser mounting mechanism 6 includes a sleeve 61 adapted to the eraser 11, and a tray 62 fixedly connected to the upper end of the sleeve 61. The weight 7 is placed on the tray 62. The sleeve 61 vertically penetrates the support plate 15 and is slidably connected to the support plate 15; the lifting mechanism 8 can drive the support plate 15 to move upward so that the eraser leaves the paper 14. The brush mechanism 9 includes a sliding seat 91, a motor 92, and a brush roller 93. The sliding seat 91 is slidably connected to the upper side of the base plate 3, and the motor 92 is fixedly connected to the upper side of the base plate 3 and connected to the brush roller 93. The lower side of the brush roller 93 is adapted to the height of the paper. The second linear driver 10 drives the sliding seat 91 so that the brush roller 93 moves between the paper and the eraser, or moves away from the paper and the eraser.

[0022] With the above settings, during testing, the lifting mechanism 8 can drive the eraser upward away from the paper, and the brush roller 93 can move between the eraser and the paper to clean the eraser shavings on the eraser and the paper, so that when the eraser rubs against the paper, the contact between the eraser and the paper is better, thus improving the accuracy of the abrasion resistance test.

[0023] Figure 1The front, back, left, and right directions of the testing device are marked. The base plate 3 is horizontally set. The paper locking mechanism 4 can move back and forth on the base plate 3 under the action of the first linear drive 5. After the paper is horizontally laid on the upper side of the paper locking mechanism 4, the paper locking mechanism 4 locks the paper. The eraser to be tested is installed at the lower end of the sleeve 61. The outer surface of the eraser is in contact with the inner wall of the sleeve 61. Under the action of friction, the eraser will not fall off the sleeve 61. The tray 62 is horizontally fixedly connected to the upper end of the sleeve 61. The edge of the tray 62 protrudes from the side of the sleeve 61. The weight 7 is placed on the upper end of the tray 62. When testing abrasion resistance, the lower end of the eraser abuts against the paper. The tray 62 does not contact the support plate 15. The weight 7 makes a constant pressure between the lower end of the eraser and the paper. The first linear drive 5... The actuator 5 can be an electric cylinder or a cam structure to drive the paper locking mechanism 4 to reciprocate back and forth. In this application, after the paper locking mechanism 4 reciprocates 10 times, simulating a real user scenario, long strips of eraser shavings are generated on the paper. The first linear actuator 5 pauses, and the lifting mechanism 8 drives the support plate 15 to move upward. The support plate 15 lifts the tray 62, and the tray 62, sleeve 61, and eraser move upward. The eraser separates from the paper. The output shaft of the motor 92 extends forward and backward and is coaxially connected to the brush roller 93. The brush roller 93 is located in front of the paper locking mechanism 4. The second linear actuator 10 can be an electric cylinder. The second linear actuator 10 drives the sliding seat 91 to move backward, and the brush roller 93 moves between the eraser and the paper. Figure 4 The upper side of the brush roller 93 contacts the lower end of the eraser, and the lower side of the brush roller 93 contacts the paper. The motor 92 drives the brush roller 93 to rotate, and the brush roller 93 brushes away the eraser shavings on the lower end of the eraser and the upper side of the paper. The bristles on the surface of the brush roller 93 are similar to the bristles of a paintbrush, and are soft in texture, so they can brush away the eraser shavings without abrading the eraser. The second linear actuator 10 drives the brush roller 93 to move forward and away from the paper and eraser. The lifting mechanism 8 drives the support plate 15 to move downward. After the lower end of the eraser contacts the paper, the support plate 15 continues to move downward, so that the support plate 15 is separated from the tray 62. The first linear actuator 5 continues to drive the paper locking mechanism 4 to reciprocate back and forth. Every 10 reciprocations, the first linear actuator 5 needs to pause. The detection device cleans the eraser shavings on the lower end of the eraser and the paper according to the above steps, so that there are few or no eraser shavings between the eraser and the paper during the eraser abrasion test, so that the eraser and the paper have good contact and improve the accuracy of the abrasion test.

[0024] As one implementation, the paper locking mechanism 4 includes a support base 41, a pressure plate 42, and an electric push rod 43. The support base 41 is slidably connected to the upper side of the base plate 3, the pressure plate 42 is disposed above the support base 41, and the electric push rod 43 is vertically mounted on the support base 41 and connected to the pressure plate 42.

[0025] With the above configuration, the electric push rod 43 presses the paper onto the support base 41 via the pressure plate 42.

[0026] The support base 41 of this application is horizontal on the upper side, and two pressure plates 42 are provided, one on the left and one on the right above the support base 41. Each pressure plate 42 is connected to an electric push rod 43 on its lower side. When the electric push rod 43 drives the pressure plate 42 to move upward, the paper is spread on the upper side of the support base 41. When the electric push rod 43 drives the pressure plate 42 to move downward, the two pressure plates 42 press the left and right sides of the paper tightly onto the support base 41. The lower end of the eraser passes between the two pressure plates 42 and abuts against the paper. When the first linear actuator 5 drives the support base 41 to move back and forth, the eraser will not contact the pressure plate 42.

[0027] As one implementation, the lifting mechanism 8 includes a bracket 81, a telescopic guide 82, a guide plate 83, a connecting plate 84, and a roller 85. The bracket 81 is fixedly connected to the base plate 3. The upper side of the support plate 15 is connected to the bracket 81 through the vertically arranged telescopic guide 82. One end of the support plate 15 extends horizontally towards the sliding seat 91 and is fixedly connected to the guide plate 83. The guide plate 83 includes an inclined part 831 and a horizontal part 832. The inclined part is inclined upward away from the support plate 15 and is fixedly connected to the horizontal part. The roller 85 is rotatably connected above the sliding seat 91 through the connecting plate 84. The detection device has a chip removal state and a detection state. In the detection state, the roller 85 is located below the horizontal part and the eraser is in contact with the paper surface. In the chip removal state, the roller 85 is located below the support plate 15 and the brush roller 93 is located between the eraser and the paper.

[0028] With the above configuration, when the second linear actuator 10 drives the sliding seat 91 to move, the sliding seat 91 is connected to the support plate 15 through the lifting mechanism 8. The support plate 15 automatically moves up and down accordingly. That is, the support plate 15 and the sliding seat 91 share the second linear actuator 10 as the power source, making the structure of the detection device more compact.

[0029] The bracket 81 and telescopic guide 82 of this application serve a guiding function, ensuring that the support plate 15 can only move stably up and down. The support plate 15 and guide plate 83 are integrally formed and can be obtained by bending a single steel plate. The horizontal part is horizontal to the support plate 15, and the roller 85 can move back and forth between the horizontal part and the support plate 15 through the inclined part. When the roller 85 is located below the horizontal part, such as Figure 1When the detection device is in detection mode, the brush roller 93 is located in front of the paper. At this time, the support plate 15 is at a low height, so that the lower end of the eraser is in contact with the paper. When the second linear driver 10 drives the sliding seat 91 to move backward, the roller 85 rolls through the inclined part to the lower side of the support plate 15, and the support plate 15 is raised. The upper side of the brush roller 93 is matched with the lower end of the eraser. The second linear driver 10 continues to drive the sliding seat 91 to move backward until the brush roller 93 moves between the eraser and the paper. When the second linear driver 10 drives the sliding seat 91 to move forward, the roller 85 moves back to the lower side of the horizontal part, and the support plate 15 moves downward under the action of gravity, and the lower end of the eraser is in contact with the paper again.

[0030] As one implementation, the bracket 81 also includes a top plate 811 and a connecting rod 812. The top plate 811 is fixedly connected to the bottom plate 3 through the connecting rod 812. The top plate 811 is horizontally positioned above the support plate 15. The support plate 15 is connected to the top plate 811 through a telescopic guide 82.

[0031] As one implementation, the telescopic guide 82 includes a guide sleeve 821 and a guide rod 822. The guide sleeve 821 is vertically fixedly connected to the lower side of the top plate 811, the upper end of the guide rod 822 is slidably connected in the guide sleeve 821, and the lower end of the guide rod 822 is fixedly connected to the support plate 15.

[0032] The telescopic guide 82 of this application is provided with at least two guide sleeves 821 and guide rods 822. The outer periphery of the guide rod 822 is in contact with the inner wall of the guide sleeve 821, so that the guide rod 822 slides up and down stably in the guide sleeve 821, thereby improving the stability of the support plate 15 moving up and down.

[0033] As one implementation method, the detection device also includes a guide rail 16, with the sliding seat 91 and the paper locking mechanism 4 slidably connected to both ends of the guide rail 16.

[0034] The above settings improve the stability of the movement of the slide block 91 and the paper locking mechanism 4.

[0035] As one implementation, the pressure plate 42 is provided with two plates, and a detection gap is formed between the two plates, which is parallel to the guide rail 16. The axis of the brush roller 93 is parallel to the guide rail 16, and the end of the brush roller 93 faces the detection gap. The paper enters and exits through one end of the detection gap.

[0036] With the above settings, the brush roller 93 will not come into contact with the pressure plate 42 during its movement to the upper side of the paper.

[0037] Specifically, a detection gap is formed between the two pressure plates 42, extending in the front-to-back direction along the length. The detection gap is specifically used to avoid the eraser. When the first linear actuator 5 drives the paper locking mechanism 4 to reciprocate back and forth, the eraser will not contact the pressure plate 42. The front end of the detection gap faces the brush roller 93. When the second linear actuator 10 drives the brush roller 93 to move backward, the brush roller 93 will not contact the pressure plate 42, thus reducing brush wear.

[0038] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A device for testing the abrasion resistance of an eraser, characterized in that, It includes a base plate, a paper locking mechanism, a first linear actuator, an eraser mounting mechanism, weights, a support plate, a lifting mechanism, a brush mechanism, and a second linear actuator; The paper locking mechanism is used to horizontally lock the paper, is slidably connected to the upper side of the base plate, and is driven by the first linear driver. The eraser mounting mechanism includes a sleeve adapted to the eraser and a tray fixedly connected to the upper end of the sleeve. The weight is placed on the tray. The sleeve vertically penetrates the support plate and is slidably connected to the support plate. The lifting mechanism can drive the support plate to move upward so that the eraser leaves the paper. The brush mechanism includes a sliding seat, a motor, and a brush roller. The sliding seat is slidably connected to the upper side of the base plate, and the motor is fixedly connected to the upper side of the base plate and connected to the brush roller. The lower side of the brush roller is adapted to the height of the paper. The second linear driver drives the sliding seat to move the brush roller between the paper and the eraser, or away from the paper and the eraser.

2. The eraser abrasion resistance testing device according to claim 1, characterized in that, The paper locking mechanism includes a support base, a pressure plate, and an electric push rod. The support base is slidably connected to the upper side of the base plate, the pressure plate is disposed above the support base, and the electric push rod is vertically mounted on the support base and connected to the pressure plate.

3. The eraser abrasion resistance testing device according to claim 1, characterized in that, The lifting mechanism includes a bracket, a telescopic guide, a guide plate, a connecting plate, and rollers. The bracket is fixedly connected to the base plate. The upper side of the support plate is connected to the bracket via a vertically arranged telescopic guide. One end of the support plate extends horizontally towards the sliding seat and is fixedly connected to the guide plate. The guide plate includes an inclined portion and a horizontal portion. The inclined portion, away from the support plate, is inclined upwards and fixedly connected to the horizontal portion. The rollers are rotatably connected above the sliding seat via the connecting plate. The detection device has a chip removal state and a detection state. In the detection state, the rollers are located below the horizontal portion, and the eraser is in contact with the paper surface. In the chip removal state, the rollers are located below the support plate, and the brush roller is located between the eraser and the paper.

4. The eraser abrasion resistance testing device according to claim 3, characterized in that, The support also includes a top plate and a connecting rod. The top plate is fixedly connected to the bottom plate through the connecting rod. The top plate is horizontally positioned above the support plate. The support plate is connected to the top plate through a telescopic guide.

5. The eraser abrasion resistance testing device according to claim 4, characterized in that, The telescopic guide includes a guide sleeve and a guide rod. The guide sleeve is vertically fixedly connected to the lower side of the top plate, the upper end of the guide rod is slidably connected in the guide sleeve, and the lower end of the guide rod is fixedly connected to the support plate.

6. The eraser abrasion resistance testing device according to claim 1, characterized in that, The detection device also includes a guide rail, and the sliding seat and the paper locking mechanism are slidably connected to both ends of the guide rail.

7. The eraser abrasion resistance testing device according to claim 2, characterized in that, The pressure plate consists of two plates, with a detection gap formed between them that is parallel to the guide rail. The axis of the brush roller is parallel to the guide rail, and the end of the brush roller faces the detection gap, through which the paper enters and exits.

Images