A protective film scratch resistance testing device

Abstract

The present invention relates to a protective film scratch resistance testing device in the field of physical analysis. In the present application, when the testing needle is driven to rotate by an electric roller, the pressure of the testing needle on the surface of the testing object gradually increases to a peak in a vertical state and then gradually decreases to achieve testing of different intensities. In the above process, the electromagnetic slider can drive the testing object to slide freely in the electromagnetic sliding groove, thereby achieving the detection of scratch resistance at different places on the surface of the testing object. At the same time, a collection and reinstallation device is provided for the broken testing needle, and the damaged testing needle can be recovered and installed in time, so that the equipment can work continuously and automatically for a long time. Even if a testing needle is broken due to fatigue accumulation, there is no need to stop the testing equipment for replacement, and automatic replacement can be achieved. In the entire testing process, no manual intervention is required, and the operation is simpler.

Description

Technical Field

[0001] The present invention relates to a protective film scratch resistance performance testing device, in particular to a protective film scratch resistance performance testing device applied in the field of physical analysis. Background Art

[0002] Protective film scratch resistance testing equipment is mainly used to evaluate and test various protective films, such as mobile phone screen protective films, car paint protective films, etc., to see how well they can withstand scratches or scratches. This type of equipment simulates the scratching scenarios in actual applications and conducts quantitative tests on the protective film to ensure that it achieves the expected durability and protective effect.

[0003] The specification of utility model patent CN202123245024.8 discloses a scratch resistance tester. The application clamps the sample by setting a turntable, a slider, a first arc block, a fixed block, a second bolt and a second arc block, pulls the square block outward to move the inclined block outward, rotates the rectangular rod to make the cutter head contact the surface of the sample, and can move left and right by sliding the rectangular sleeve to test different positions on the surface of the sample. The turntable is rotated by the motor to rotate so that the cutter head is tested on the surface of the sample, and the counterweight blocks can be added or removed in sequence to facilitate testing of the sample under different pressures.

[0004] In the above utility model patent, different positions on the surface of the sample can be tested with different forces. However, during the testing process, once the cutter head breaks, it is necessary to replace the cutter head to continue the work, which may easily affect the efficiency of the scratch resistance test. Moreover, it is relatively troublesome to achieve different force tests by adding and subtracting counterweights. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that in the detection process of the prior art, once the cutter head breaks, the cutter head needs to be replaced to continue the work, which easily affects the efficiency of the scratch resistance detection, and it is relatively troublesome to achieve tests of different intensities by adding and subtracting counterweights.

[0006] In order to solve the above problems, the present invention provides a protective film scratch resistance performance testing device, including a testing base, the testing base includes a base body, a lifting groove is bored at the upper end of the base body, an electric push rod is fixedly connected to the bottom plate of the lifting groove, the upper end of the electric push rod is fixedly connected to a testing platform matching the opening of the lifting groove, the testing platform includes a movable platform, an electromagnetic sliding groove is bored at the upper end of the movable platform, an electromagnetic sliding slider matching itself is slidably connected in the electromagnetic sliding groove, a testing object is fixedly connected to the electromagnetic slider, a frame is fixedly connected to the side wall of the movable platform, the frame includes a frame body, electric grooves are bored on the opposite side walls of the frame body, an electric roller is rotatably connected between the two electric grooves, a plurality of mounting holes are bored on the electric roller, mounting bases matching itself are respectively fixedly connected in the plurality of mounting holes, and a testing needle is fixedly connected in the mounting base.

[0007] In the above-mentioned protective film scratch resistance testing equipment, multiple testing needles can be used to ensure that even if a testing needle breaks due to accumulated fatigue, there is no need to shut down the testing equipment for replacement. At the same time, the testing force is changed by the different angles formed by the testing needle and the test object. During the entire testing process, manual replacement is not required, and the operation is simpler.

[0008] As a further improvement of the present application, the detection needle is made of magnetic material, and the mounting base includes a fixed shell, and the electromagnetic block and the electromagnetic ring are respectively fixedly connected on the groove bottom plate of the fixed shell, and the electromagnetic ring is sleeved on the outside of the electromagnetic block. The electromagnetic block is attracted to the detection needle when powered on, and the electromagnetic ring repels the detection needle when powered on. When the device is in a working state, the electromagnetic block is powered on and the electromagnetic ring is powered off to fix the detection needle. When the detection needle needs to be removed, the electromagnetic block is powered off and the electromagnetic ring is powered on to facilitate the disassembly of the detection needle. When the detection needle needs to be installed, the electromagnetic block is switched back to the state where the electromagnetic block is powered on and the electromagnetic ring is powered off.

[0009] As a further improvement of the present application, the detection needle includes a fixing part, an end of the fixing part away from the mounting base is fixedly connected to a transmitting part, and an end of the transmitting part away from the fixing part is fixedly connected to a detecting part, wherein the side walls of the transmitting part and the detecting part are both inclined in design to facilitate the installation of the detection needle.

[0010] As a further improvement of the present application, a recovery bracket is fixedly connected to a side wall at the upper end of the frame, and a winding groove is opened at the end of the recovery bracket away from the frame, and a winding rod is rotatably connected in the winding groove, and a capture net is wound on the winding rod, one end of the capture net is fixedly connected to the winding rod, and the other end of the capture net naturally droops to the height where the detection needle is horizontally directed, and an infrared receiver whose position matches the detection needle is fixedly connected to the recovery bracket, and an infrared generator whose position matches the infrared receiver is fixedly connected to the movable table, so that the damaged detection needle can be recovered in time, and the weight of the recovered detection needle can drive the capture net to be pulled down as a whole, so that the capture net captures the detection needle and moves downward, and the unloaded capture net moves to the optimal capture position of the detection needle, so as to realize continuous capture of damaged detection needles.

[0011] As a further improvement of the present application, the maximum diameter of the launch part is larger than the diameter of the capture net, and barbs are provided on the side of the detection part away from the launch part to reduce the possibility of the detection needle falling off from the capture net naturally.

[0012] As a further improvement and supplement to the present application, a counterweight block is fixedly connected to one end of the capture net away from the winding rod. When the detection needle is not captured on the capture net, the overall stability of the detection needle is increased, so that the detection needle is not likely to cause excessive shaking of the capture net when shooting towards the capture net, and is not likely to affect the capture effect of the capture net.

[0013] As another improvement of the present application, a feeding trough is bored at the upper end of the frame body, and a vortex baffle and an electric airbag are fixedly connected in the feeding trough. The electric airbag is located at the extended part of the vortex baffle, and a part of the electric airbag is cut into the vortex baffle. Multiple detection needles are placed in the vortex baffle, and the multiple detection parts are all facing upward. A feeding port is bored at the lower end of the feeding trough, and a sealing cover matching the detection needle is threadedly connected to the opening of the feeding trough, which can automatically complete the automatic installation of the detection needle, so as to facilitate the equipment to perform long-term continuous automatic operation.

[0014] As another improvement of the present application, the frame is made of magnetic material, and the frame and the detection needles are integrally adsorbed, so that the multiple detection needles are not easily automatically dropped from the loading port due to mutual repulsion.

[0015] To sum up, when the detection needle is driven by the electric roller to rotate, the detection needle goes through three stages of cutting in, vertical and leaving during the process of contacting with the surface of the detection object. In the above three stages, the pressure of the detection needle on the surface of the detection object gradually increases to the peak of the vertical state, and then gradually decreases to achieve detection of different intensities. In the above process, the electromagnetic slider can drive the detection object to slide freely in the electromagnetic sliding groove, thereby realizing the detection of scratch resistance at different places on the surface of the detection object. Compared with the existing technology, through multiple detection needles, even if a detection needle breaks due to fatigue accumulation, there is no need to shut down the detection equipment for replacement. At the same time, the detection intensity is changed by the different angles formed by the detection needle and the detection object. In the entire detection process, manual replacement is not required, and the operation is simpler.

[0016] At the same time, the present application provides a collection and reinstallation device for broken detection needles, which can timely recover damaged detection needles, and by recovering the weight of the detection needles, drive the capture net to be pulled down as a whole, so that the capture net captures the detection needle and moves down. The unloaded capture net moves to the best capture position of the detection needle, which can realize continuous capture of damaged detection needles, and utilize the loading trough, vortex baffle, electric airbag and loading port arranged on the frame to realize the reinstallation of the detection needle, so that the equipment can work continuously and automatically for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a protective film scratch resistance testing device according to a first embodiment of the present application;

[0018] Figure 2 A side cross-sectional view of a protective film scratch resistance testing device according to a first embodiment of the present application;

[0019] Figure 3 This is a schematic structural diagram of a mounting base according to a first embodiment of the present application;

[0020] Figure 4 A side cross-sectional view of a mounting base according to a first embodiment of the present application;

[0021] Figure 5 This is a schematic diagram of the structure of a detection needle according to the first embodiment of the present application;

[0022] Figure 6 This is a schematic diagram of the structure of the protective film scratch resistance performance testing equipment of the second embodiment of the present application. Figure 1 ;

[0023] Figure 7 A side cross-sectional view of a protective film scratch resistance testing device according to a second embodiment of the present application;

[0024] Figure 8This is a schematic diagram of the structure of the protective film scratch resistance performance testing equipment of the second embodiment of the present application. Figure 2 ;

[0025] Fig. 9 This is a schematic structural diagram of the protective film scratch resistance testing device according to the second embodiment of the present application after the feeding cover is opened;

[0026] Fig.10 for Fig. 9 Schematic diagram of the structure at A in the middle.

[0027] Description of the numbers in the figure:

[0028] 1 detection base, 101 base body, 102 lifting slot, 103 electric push rod, 2 detection platform, 201 movable table, 202 electromagnetic sliding slot, 203 electromagnetic slider, 204 detection object, 3 rack, 301 frame, 302 electric slot, 303 feeding slot, 304 vortex baffle, 305 electric airbag, 306 feeding port, 4 electric roller, 5 mounting base, 501 fixed shell, 502 electromagnetic block, 503 electromagnetic ring, 6 detection needle, 601 fixed part, 602 transmitting part, 603 detection part, 7 recovery bracket, 8 infrared receiver, 9 capture net. DETAILED DESCRIPTION

[0029] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0030] The first implementation method:

[0031] Figure 1-2 The present invention shows a protective film scratch resistance performance testing device, comprising a testing base 1, the testing base 1 comprising a base body 101, a lifting groove 102 is bored on the upper end of the base body 101, an electric push rod 103 is fixedly connected to the bottom plate of the lifting groove 102, the upper end of the electric push rod 103 is fixedly connected to a testing platform 2 matching the opening of the lifting groove 102, the testing platform 2 comprises a movable platform 201, an electromagnetic sliding groove 202 is bored on the upper end of the movable platform 201, an electromagnetic sliding block 202 matching the movable platform 201 is slidably connected in the electromagnetic sliding groove 202 3. A detection object 204 is fixedly connected to the electromagnetic slider 203, and the electromagnetic slider 203 and the detection object 204 are fixedly connected by a buckle. A frame 3 is fixedly connected to the side wall of the movable platform 201, and the frame 3 includes a frame body 301. Electric grooves 302 are drilled on the opposite side walls of the frame body 301, and an electric roller 4 is rotatably connected between the two electric grooves 302. A plurality of mounting holes are drilled on the electric roller 4, and mounting bases 5 matching the electric rollers are respectively fixedly connected in the plurality of mounting holes, and a detection needle 6 is fixedly connected in the mounting base 5.

[0032] In particular, the various structures in the present application are not drawn strictly in proportion, and those skilled in the art may reasonably design the dimensions of each structure according to actual conditions. This is a known technology to those skilled in the art and is therefore not disclosed in detail in the present application.

[0033] In addition, the electrical structures in the present application, including but not limited to the power supply, installation and working state control methods of the electric push rod 103, electromagnetic slider 203 and electric roller 4 are also well-known technologies to those skilled in the art. Those skilled in the art can reasonably install and use the electrical structures in the present application according to actual work needs.

[0034] In the present application, the installation and removal of the detection object 204 can be performed by a robotic arm. After the detection object 204 is installed, a scratch resistance test can be performed. When the detection needle 6 is driven to rotate by the electric roller 4, the detection needle 6 experiences three stages of cutting in, verticality and leaving during the contact with the surface of the detection object 204. In the above three stages, the pressure of the detection needle 6 on the surface of the detection object 203 gradually increases to the peak of the vertical state, and then gradually decreases to achieve detection of different forces. In the above process, the electromagnetic slider 203 can drive the detection object 204 to slide freely in the electromagnetic sliding groove 202, thereby realizing the scratch resistance test of different places on the surface of the detection object 204. Compared with the prior art, through multiple detection needles 6, even if a detection needle 6 breaks due to fatigue accumulation, there is no need to shut down the detection equipment for replacement. At the same time, the detection force is changed by the different angles formed by the detection needle 6 and the detection object 204. In the entire detection process, manual replacement is not required, and the operation is simpler.

[0035] The test object 204 tested by the device is then subjected to surface testing manually or by an image recognition device to confirm the scratch resistance of the test object 204 .

[0036] In addition, in the present application, the presence of the electric push rod 103 can adjust the overall height of the detection platform 2, and then adjust the maximum depth of the detection needle 6 cutting into the detection object 204, that is, adjust the scraping force of the detection needle 6, and the presence of the electric groove 302 is to raise the overall height of the electric roller 4 during the installation and disassembly process of the detection object 204, thereby reducing the impact on the operation of the robotic arm.

[0037] See also Figure 2-4The detection needle 6 is made of magnetic material, and the mounting base 5 includes a fixed shell 501. The electromagnetic block 502 and the electromagnetic ring 503 are fixedly connected to the groove bottom plate of the fixed shell 501, and the electromagnetic ring 503 is sleeved on the outer side of the electromagnetic block 502. The electromagnetic block 502 is attracted to the detection needle 6 when it is powered on, and the electromagnetic ring 503 repels the detection needle 6 when it is powered on. In the working state of the device, the electromagnetic block 502 is powered on and the electromagnetic ring 503 is powered off to fix the detection needle 6. When the detection needle 6 needs to be removed, the electromagnetic block 502 is powered off and the electromagnetic ring 503 is powered on to facilitate the removal of the detection needle 6. When the detection needle 6 needs to be installed, the electromagnetic block 502 is switched back to the state where the electromagnetic block 502 is powered on and the electromagnetic ring 503 is powered off.

[0038] See also Figure 5 The detection needle 6 includes a fixing portion 601, an end of the fixing portion 601 away from the mounting base 5 is fixedly connected to a transmitting portion 602, and an end of the transmitting portion 602 away from the fixing portion 601 is fixedly connected to a detecting portion 603, wherein the side walls of the transmitting portion 602 and the detecting portion 603 are both inclinedly designed to facilitate the installation of the detection needle 6.

[0039] The second implementation method:

[0040] Figure 6 and Figure 8 A protective film scratch resistance testing device is shown, a recovery bracket 7 is fixedly connected to one side wall of the upper end of the frame 301, a winding groove is formed on the end of the recovery bracket 7 away from the frame 3, a winding rod is rotatably connected in the winding groove, a capture net 9 is wound on the winding rod, one end of the capture net 9 is fixedly connected to the winding rod, the other end of the capture net 9 naturally hangs down to the height of the detection needle 6 in the horizontal direction, and the capture net 9 cannot drive the recovery bracket 7 to rotate in the natural state, an infrared receiver 8 whose position matches the detection needle 6 is fixedly connected to the recovery bracket 7, and an infrared generator whose position matches the infrared receiver 8 is fixedly connected to the movable platform 201.

[0041] In the present application, the detection base 1 is equipped with a control terminal for controlling the working status of each electrical structure of the present application. At the same time, the detection data of the infrared receiver 8 will also be uploaded to the control terminal for decision-making of the control terminal.

[0042] In the present application, the direction in which the electric roller 4 rotates is from the bottom to the direction of the capture net 9. During the above process, the detection needle 6 will be driven to periodically block the conduction of infrared light between the infrared receiver 8 and the infrared generator. When the detection needle 6 is broken, it is impossible to block the conduction of infrared light between the infrared receiver 8 and the infrared generator. When the control terminal receives the above complete infrared light conduction signal, it is determined that the current detection needle 6 is damaged. When the detection needle 6 continues to move toward the capture net 9 and the angle with the horizontal direction is 45°, the control terminal controls the electromagnetic block 502 to cut off the power and turns on the electromagnetic ring 50. 3. The detection needle 6 is thrown toward the capture net 9 as a whole, and partially passes through the capture net 9 to be captured. The ejection of multiple detection needles 6 is an independent event, so their landing points on the detection needles 6 are not completely consistent, and therefore will not affect the subsequent capture of the detection needles 6. As the number of detection needles 6 on the capture net 9 increases, the load of the capture net 9 increases, driving the capture net 9 to be pulled down as a whole, so that the capture net 9 captures the detection needle 6 and moves downward. The unloaded capture net 9 moves to the best capture position of the detection needle 6, which can realize the continuous capture of the damaged detection needle 6, and then restores to the state where the electromagnetic block 502 is energized and the electromagnetic ring 503 is de-energized.

[0043] The maximum diameter of the launch part 602 is larger than the diameter of the capture net 9, and the detection part 603 is provided with barbs on the side away from the launch part 602 to reduce the possibility of the detection needle 6 falling off from the capture net 9 naturally. The end of the capture net 9 away from the winding rod is fixedly connected with a counterweight block. When the detection needle 6 is not captured on the capture net 9, the overall stability of the detection needle 6 is increased, so that the detection needle 6 is not likely to cause excessive shaking of the capture net 9 when it is shot towards the capture net 9, and is not likely to affect the capture effect of the capture net 9.

[0044] See also Figure 7 and 9 -10. A feeding trough 303 whose position matches that of the detection needle 6 is formed at the upper end of the frame 301. A vortex baffle 304 and an electric airbag 305 are fixedly connected in the feeding trough 303. The electric airbag 305 is located at the extended part of the vortex baffle 304, and a part of the electric airbag 305 is cut into the vortex baffle 304. A plurality of detection needles 6 are placed in the vortex baffle 304, and a plurality of detection parts 603 are all facing upward. A feeding port 306 whose position matches that of the detection needle 6 is formed at the lower end of the feeding trough 303. A sealing cover matching the feeding trough 303 is threadedly connected at the opening of the feeding trough 303.

[0045] When the detection needle 6 in the local installation base 5 completes the ejection work, the overall rotation speed of the electric roller 4 is slowed down until it moves to the lower side of the feeding trough 303. At this time, the electric airbag 305 is started, and gas is introduced into the interior and expands. At this time, the electric airbag 305 will push multiple detection needles 6 until one detection needle 6 moves to the position of the feeding port 306, passes through the feeding port 306, and falls into the corresponding installation base 5, completing the automatic installation of the detection needle 6, so as to facilitate the equipment to perform long-term continuous automatic operation.

[0046] The gas can be introduced into the electric airbag 305 by means of a small air pump, and the specific working time of the electric airbag 305 and the speed of gas introduction are controlled by the control terminal. Even if there is a deviation in the time for the gas introduction of the electric airbag 305, the shape of the detection needle 6 is convenient for it to fall into the corresponding mounting base 5 with a certain error.

[0047] The frame 301 is made of magnetic material, and the frame 301 and the detection needles 6 are integrally adsorbed, so that the plurality of detection needles 6 are not likely to automatically fall off from the loading port 306 due to mutual repulsion.

[0048] Compared with the first embodiment, the present embodiment provides a collection and reinstallation device for the broken detection needle 6, so that the damaged detection needle 6 can be recovered in time, and the weight of the recovered detection needle 6 can drive the capture net 9 to be pulled down as a whole, so that the position where the capture net 9 captures the detection needle 6 moves down, and the unloaded capture net 9 moves to the best capture position of the detection needle 6, so as to realize continuous capture of the damaged detection needle 6, and the loading trough 303, the vortex baffle 304, the electric airbag 305 and the loading port 306 arranged on the frame 301 are used to realize the reinstallation of the detection needle 6, so that the device can work continuously and automatically for a long time.

[0049] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A protective film scratch resistance testing device, comprising a testing base (1), characterized in that: The detection base (1) comprises a base body (101), a lifting groove (102) is bored at the upper end of the base body (101), an electric push rod (103) is fixedly connected to the bottom plate of the lifting groove (102), the upper end of the electric push rod (103) is fixedly connected to a detection platform (2) matching the opening of the lifting groove (102), the detection platform (2) comprises a movable platform (201), an electromagnetic sliding groove (202) is bored at the upper end of the movable platform (201), an electromagnetic sliding block (202) matching the movable platform (201) is slidably connected in the electromagnetic sliding groove (202) 03), a detection object (204) is fixedly connected to the electromagnetic slider (203), a frame (3) is fixedly connected to the side wall of the movable platform (201), the frame (3) comprises a frame body (301), electric grooves (302) are respectively bored on the opposite side walls of the frame body (301), an electric roller (4) is rotatably connected between two of the electric grooves (302), the electric roller (4) is bored with a plurality of mounting holes, a mounting base (5) matching the electric roller is respectively fixedly connected in the plurality of mounting holes, and a detection needle (6) is fixedly connected in the mounting base (5); The detection needle (6) is made of magnetic material. The mounting base (5) comprises a fixed shell (501). The bottom plate of the fixed shell (501) is fixedly connected to an electromagnetic block (502) and an electromagnetic ring (503), respectively. The electromagnetic ring (503) is sleeved on the outer side of the electromagnetic block (502). The electromagnetic block (502) is attracted to the detection needle (6) when powered on. The electromagnetic ring (503) repels the detection needle (6) when powered on. The detection needle (6) comprises a fixed portion (601). An end of the fixed portion (601) away from the mounting base (5) is fixedly connected to a transmitting portion (602). An end of the transmitting portion (602) away from the fixed portion (601) is fixedly connected to a detecting portion (603).

2. The protective film scratch resistance testing device according to claim 1, characterized in that: A recovery bracket (7) is fixedly connected to a side wall at the upper end of the frame (301); a reeling groove is formed at one end of the recovery bracket (7) away from the frame (3); a reeling rod is rotatably connected in the reeling groove; a capture net (9) is wound around the reeling rod; one end of the capture net (9) is fixedly connected to the reeling rod; the other end of the capture net (9) naturally hangs down to a height at which the detection needle (6) is in a horizontal direction; an infrared receiver (8) whose position matches the detection needle (6) is fixedly connected to the recovery bracket (7); and an infrared generator whose position matches the infrared receiver (8) is fixedly connected to the movable platform (201).

3. The protective film scratch resistance testing device according to claim 1, characterized in that: The maximum diameter of the transmitting portion (602) is larger than the diameter of the capturing net (9), and a barb is provided on a side of the detecting portion (603) away from the transmitting portion (602).

4. The protective film scratch resistance testing device according to claim 2, characterized in that: One end of the capture net (9) away from the reeling rod is fixedly connected to a counterweight block.

5. The protective film scratch resistance testing device according to claim 1, characterized in that: The upper end of the frame (301) is provided with a feeding trough (303) whose position matches that of the detection needle (6); a vortex baffle (304) and an electric airbag (305) are fixedly connected in the feeding trough (303); the electric airbag (305) is located at the extended portion of the vortex baffle (304), and a part of the electric airbag (305) is cut into the vortex baffle (304); a plurality of detection needles (6) are placed in the vortex baffle (304); the plurality of detection parts (603) are all facing upwards; a feeding port (306) whose position matches that of the detection needle (6) is formed at the lower end of the feeding trough (303); and a sealing cover matching the feeding trough (303) is threadedly connected to the opening of the feeding trough (303).

6. The protective film scratch resistance testing device according to claim 1, characterized in that: The frame (301) is made of magnetic material, and the frame (301) and the detection needle (6) are integrally adsorbed.

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