A screen panel rub test apparatus

Abstract

The utility model provides a kind of screen panel friction test equipment, including end effector (43), the end effector (43) includes mounting seat (431), the lower end of mounting seat (431) installs pressure sensing collector (432), the pressure sensing collector (432) is installed the friction unit (433) by buffer unit (434), the friction unit (433) is used to press down friction test product.The application is set by double-station structure, and after station personnel can place product on fixture, personnel can switch according to machine type, and the different pressing force, the route of touch is set by program.

Description

Technical Field

[0001] This application relates to the field of screen panel testing technology, and in particular to a screen panel friction testing device. Background Technology

[0002] Major panel manufacturers update their LCD panel production processes according to the needs of mobile phones, tablets, and other devices, adjusting screen sizes and manufacturing processes accordingly. After producing samples of new models, these samples must undergo a series of tests, including vibration and friction tests. Mass production can only begin after these reliability tests are completed. Existing screen friction testing equipment is designed for batch production testing, but can only test one product at a time. The equipment size switching mechanism needs to be replaced, resulting in high costs for equipment upgrades and difficulties in transporting the equipment when changing testing laboratories. Utility Model Content

[0003] Based on the above, the purpose of this utility model is to provide a screen panel friction testing device. With a dual-station structure, operators can place the product on the fixture and switch between different models. By using pre-programmed pressure and touch paths, the device can perform long-term testing and track results in real time. This device has a compact 1000mm*1000mm footprint, making it easy to move to different laboratories, and it is also cost-effective. It meets the laboratory needs of customers.

[0004] To address the aforementioned issues, a screen panel friction testing device is provided, comprising an end effector. The end effector includes a mounting base, with a pressure sensor mounted on the lower end of the mounting base. The pressure sensor is mounted on a friction unit via a buffer unit, and the friction unit is used to press down on the friction test product.

[0005] The buffer unit includes a cylindrical body, in which a buffer element is installed and two opposing buffer holes are provided on the side wall. The friction unit has a through hole at its upper part. After the upper end of the friction unit extends into the cylindrical body, it passes through the through hole and the buffer hole via an adjusting column.

[0006] The buffer hole is an elongated hole, and the buffer element is a buffer spring.

[0007] The friction unit includes a rod and a probe installed at the lower end of the rod. The probe is a copper rod probe or a stylus.

[0008] It also includes a three-axis linear displacement device and a vision device. The three-axis linear displacement device has multiple moving ends, and the multiple moving ends of the three-axis linear displacement device respectively drive an end effector to press down and rub against the test product.

[0009] The three-axis linear displacement device includes a first linear drive unit, a second linear drive unit, and a third linear drive unit. The second linear drive unit is fixedly mounted on the drive end of the first linear drive unit. The second linear drive unit is provided with multiple drive ends, and a third linear drive unit is mounted on each of the multiple drive ends. The end effector is mounted on the drive end of the third linear drive unit.

[0010] It also includes a frame, a support mechanism, and a lighting mechanism. The support mechanism is installed in the middle of the frame and includes multiple carriers. Each carrier includes multiple horizontally adjustable positioning devices for adjusting the load-bearing size and placing the test product. The lighting mechanism is located below the support mechanism and is connected to the test product for lighting. The three-axis linear displacement device drives multiple end effectors to press down and rub against the test product.

[0011] The carrier includes a rectangular frame, which includes a first adjusting plate, a second adjusting plate, a third adjusting plate, and a fourth adjusting plate arranged in pairs opposite each other. Each of the first adjusting plate, the second adjusting plate, the third adjusting plate, and the fourth adjusting plate is provided with a sliding groove. Locking devices are installed at both ends of the first adjusting plate and the second adjusting plate. The locking devices cooperate with the sliding grooves to allow the first adjusting plate and the second adjusting plate to slide along the direction of the sliding grooves. The positioning device is installed in the sliding grooves of the first adjusting plate and the second adjusting plate through the locking devices. By opening or closing the locking devices, the first adjusting plate, the second adjusting plate, and the positioning device can slide or be fixed.

[0012] The positioning device includes a fixing plate and a fixture. The fixing plate is fixedly installed on the locking device, and the fixture is installed on the upper surface of the fixing plate. The fixture is provided with an opening groove, and the opening of the opening groove faces the inside of the frame.

[0013] The lower part of the rack is also equipped with a PC host and a switch; the lighting mechanism includes a controller and multiple PG signal generating devices, which are respectively located below the test product. The PG signal generating devices are connected to the test product through connectors, and the controller is located in the middle of the multiple PG signal generating devices.

[0014] Compared with existing technologies, the beneficial effects of this utility model mainly include the following: This application, by arranging two carriers in parallel to form a dual-station structure, simultaneously meets the testing needs of two products and is compatible with different sizes from 0.2 inch (10mm*5mm) to 13.3 inch (30mm*17mm). Workers can place the products on the fixtures and switch between machines according to the model, using different programmed pressing pressures and touch paths to enable long-term testing and real-time result tracking, replacing manual testing. This equipment has a small 1000mm*1000mm footprint, facilitating its movement to different laboratories, and is cost-effective. It meets the laboratory needs of customers. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the specific embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the structure of a screen panel friction testing device provided by this utility model. Figure 1 ; Figure 2 A schematic diagram of the structure of a screen panel friction testing device provided by this utility model. Figure 2 ; Figure 3 A schematic diagram of the end effector of a screen panel friction testing device provided by this utility model. Figure 1 ; Figure 4 A schematic diagram of the end effector of a screen panel friction testing device provided by this utility model. Figure 2 ; Figure 5 A schematic diagram of the supporting mechanism of a screen panel friction testing device provided by this utility model; Figure 6 A schematic diagram of the chassis of a screen panel friction testing device provided by this utility model. Figure 1 ; Figure 7 A schematic diagram of the chassis of a screen panel friction testing device provided by this utility model. Figure 2 . Detailed Implementation

[0017] The foregoing and other technical contents, features, and effects of this utility model will be clearly presented in the following detailed description of a preferred embodiment with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front, or back, are only for reference to the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the scope of this utility model.

[0018] The embodiments of this application will now be described in detail with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the embodiments of this application to facilitate a better understanding of the application. However, the technical solutions claimed in this application can be implemented even without these technical details and various variations and modifications based on the following embodiments.

[0019] like Figures 1-7 As shown, a screen panel friction testing device includes a frame 1, a support mechanism 2, a lighting mechanism 3, and a testing mechanism 4. The support mechanism 2 is installed in the middle of the frame 1 and includes multiple carriers 21. Each carrier 21 includes multiple horizontally adjustable positioning devices 22 for adjusting the support size and placing the test product. The lighting mechanism 3 is located below the support mechanism 2 and connected to the test product for lighting. The testing mechanism 4 is located above the support mechanism 2 and includes a three-axis linear displacement device 41, a vision device 42, and multiple end effectors 43. The three-axis linear displacement device drives the multiple end effectors to press down and rub the test product. The test products of this application include LCD panels of mobile phones, tablets, etc.

[0020] The carrier 21 includes a rectangular frame, which includes a first adjusting plate 211, a second adjusting plate 212, a third adjusting plate 213, and a fourth adjusting plate 214 arranged opposite to each other. Each of the first adjusting plate 211, the second adjusting plate 212, the third adjusting plate 213, and the fourth adjusting plate 214 is provided with a sliding groove 215. Locking devices 216 are installed at both ends of the first adjusting plate 211 and the second adjusting plate 212. The locking devices 216 cooperate with the sliding grooves 215 to allow the first adjusting plate 211 and the second adjusting plate 212 to slide along the direction of the sliding grooves 215. The positioning device 22 is installed in the sliding grooves 215 of the first adjusting plate 211 and the second adjusting plate 212 through the locking devices 216. By opening or closing the locking devices 216, the first adjusting plate 211, the second adjusting plate 212, and the positioning device 22 can slide or be fixed.

[0021] Specifically, the locking device 216 uses bolts, and multiple positioning holes 217 are provided in the slide groove, with the bolts cooperating with the positioning holes.

[0022] More specifically, a scale 218 is also installed in the slide 215 to accurately determine the positions of the first adjusting plate 211, the second adjusting plate 212 and the positioning device 22.

[0023] More specifically, the supporting mechanism 2 also includes a supporting platform 219, on which multiple carriers are mounted in parallel. The supporting platform is also provided with multiple connection holes for connecting the lighting mechanism to the test product for lighting. In specific implementations, multiple carriers can be set on the supporting platform, selected according to actual conditions to meet practical needs. The structure and layout of the three-axis linear displacement device are then designed based on the positions of the carriers.

[0024] The positioning device 22 includes a fixing plate 221 and a fixture 222. The fixing plate 221 is fixedly installed on the locking device 216, and the fixture 222 is installed on the upper end face of the fixing plate 221. The fixture 222 is provided with an opening groove, and the opening of the opening groove faces the inside of the frame.

[0025] The triaxial linear displacement device 41 includes a first linear drive unit 411, a second linear drive unit 412, and a third linear drive unit 413. The second linear drive unit 412 is fixedly mounted on the drive end of the first linear drive unit 411. The second linear drive unit 412 has multiple drive ends, and a third linear drive unit 413 is mounted on each of the multiple drive ends. The end effector 43 is mounted on the drive end of the third linear drive unit 413. Specifically, in this embodiment, the second linear drive unit has two drive ends, which can drive the end effector to move separately, and test the test product according to the preset force and route.

[0026] The end effector 43 includes a mounting base 431, a pressure sensor 432 is mounted on the lower end of the mounting base 431, and a friction unit 433 is mounted on the end of the pressure sensor 432.

[0027] The end effector 43 further includes a buffer unit 434, which is used to connect the pressure sensor 432 and the friction unit 433.

[0028] The buffer unit 434 includes a cylindrical body 4341, a buffer member 4342 is installed inside the cylindrical body 4341 and two opposing buffer holes 4343 are provided on the side wall. The friction unit 433 has a through hole at its upper part. After the upper end of the friction unit 433 extends into the cylindrical body 4341, it passes through the through hole and the buffer hole 4343 through the adjusting column 4344.

[0029] Specifically, the friction unit 433 includes a rod and a probe mounted on the lower end of the rod. The probe can be a copper rod probe or a stylus. The appropriate probe can be selected based on the specific needs of the application.

[0030] The lower part of the rack 1 is also equipped with a PC host 6 and a switch 5.

[0031] The lighting mechanism 3 includes a controller 31 and multiple PG signal generating devices 32. The multiple PG signal generating devices 32 are respectively located below the test product. The PG signal generating devices 32 are connected to the test product through connectors. The controller 31 is located in the middle of the multiple PG signal generating devices 32.

[0032] The frame 1 is enclosed by a housing 7, which has a feed inlet and multiple observation windows. Curtains 73 are installed inside the housing 7 corresponding to the observation windows. A PC control unit 71 and multiple control regulators 72 are also installed outside the housing 7. The PC control unit 71 stores a data acquisition, processing, and control system. Specifically, each side wall of the housing, except for the feed inlet, has an observation window. Shields are installed at the feed inlet and the multiple observation windows. Each shield includes a pivot and a curtain. The pivot can adjust the area shielded by the curtain, satisfying both personnel observation and product confidentiality requirements. Specifically, the curtains are made of a light-blocking material to prevent external light from entering the housing and affecting optical detection.

[0033] Specifically, the multiple control regulators 72 include a force feedback sensor, control buttons, and an EMO button.

[0034] Specifically, the vision device 42 is mounted on the top of the chassis, above the support mechanism 2, and connected to the data acquisition, processing, and control system. More specifically, the vision device uses a wide-field-of-view camera. As an intelligent industrial camera, it features high resolution, fast image processing capabilities, and stable readout speed.

[0035] Compared with the prior art, the beneficial effects of this utility model mainly include the following: This application utilizes two parallel carriers to form a dual-station structure, simultaneously accommodating the testing of two products. It is compatible with different sizes from 0.2 inches (10mm*5mm) to 13.3 inches (30mm*17mm). Workers can place the products on the fixtures and switch between machines according to the model, using programmed pressure and touch paths to enable extended testing and real-time result tracking, replacing manual testing. This compact 1000mm*1000mm space facilitates movement to different laboratories and offers low cost, meeting the needs of customers' laboratories.

[0036] The working method of the screen panel friction testing device disclosed in this application is as follows: (1) Two touch screens are placed on the carrier manually, and the two products can be of different sizes at the same time; (2) After the personnel adjust and fix the carrier, they connect the test product and turn it on; (3) Close the protective door of the feeding area; (4) Set the magnitude and path of the simulated pressing force on the test product on the PC control unit of the equipment; (5) The wide-view camera inside the chassis takes pictures of the test product and then confirms the product's location; (6) The three-axis linear displacement device drives the probe or friction pen to start pressing down, and can rub the touch screen from different directions according to the set route; (7) Ground the probe or friction pen to prevent product damage caused by static electricity; (8) A pressure sensor head is installed on the probe or friction pen, and the personnel can observe the magnitude of the downward pressure from an external sensor amplifier; (9) At the end of the test or in the middle of the test, the tester can take out the product and observe whether there are any abnormalities in the screen after it has been rubbed. (10) Through long-term verification, the reliability of the test product samples after the upgrade can be achieved.

[0037] The commonly used English terms or letters used in this utility model for clarity of description are merely illustrative and not limiting or specific, and should not be construed as limiting the scope of protection of this utility model based on their possible Chinese translations or specific letters. It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A screen panel friction testing device, characterized in that, The device includes an end effector (43), which includes a mounting base (431). A pressure sensor (432) is mounted on the lower end of the mounting base (431). The pressure sensor (432) is mounted on a friction unit (433) via a buffer unit (434). The friction unit (433) is used to press down on the friction test product.

2. The screen panel friction testing device according to claim 1, characterized in that, The buffer unit (434) includes a cylindrical body (4341), a buffer component (4342) is installed inside the cylindrical body (4341), and two opposing buffer holes (4343) are provided on the side wall. The friction unit (433) has a through hole at the top. After the upper end of the friction unit (433) extends into the cylindrical body (4341), it passes through the through hole and the buffer hole (4343) through the adjusting column (4344).

3. The screen panel friction testing device according to claim 2, characterized in that, The buffer hole (4343) is an elongated hole, and the buffer element (4342) is a buffer spring.

4. The screen panel friction testing device according to claim 1, characterized in that, The friction unit (433) includes a rod and a probe installed at the lower end of the rod. The probe is a copper rod probe or a stylus.

5. The screen panel friction testing device according to claim 1, characterized in that, It also includes a three-axis linear displacement device (41) and a vision device (42). The three-axis linear displacement device (41) has multiple moving ends, and the multiple moving ends of the three-axis linear displacement device (41) respectively drive an end effector (43) to press down and rub the test product.

6. The screen panel friction testing device according to claim 5, characterized in that, The three-axis linear displacement device (41) includes a first linear drive unit (411), a second linear drive unit (412), and a third linear drive unit (413). The second linear drive unit (412) is fixedly installed at the drive end of the first linear drive unit (411). The second linear drive unit (412) is provided with multiple drive ends, and a third linear drive unit (413) is installed on each of the multiple drive ends. The end effector (43) is installed on the drive end of the third linear drive unit (413).

7. The screen panel friction testing device according to claim 6, characterized in that, It also includes a frame (1), a support mechanism (2) and a lighting mechanism (3). The support mechanism (2) is installed in the middle of the frame (1). The support mechanism (2) includes multiple carriers (21). The carriers (21) include multiple positioning devices (22) that are adjustable in the horizontal direction for adjusting the bearing size and placing the test product. The lighting mechanism (3) is located below the support mechanism (2) and is connected to the test product to light it up. The three-axis linear displacement device (41) drives multiple end effectors (43) to press down and rub the test product.

8. The screen panel friction testing device according to claim 7, characterized in that, The carrier (21) includes a rectangular frame, which includes a first adjusting plate (211), a second adjusting plate (212), a third adjusting plate (213), and a fourth adjusting plate (214) arranged opposite to each other. Each of the first adjusting plate (211), the second adjusting plate (212), the third adjusting plate (213), and the fourth adjusting plate (214) is provided with a sliding groove (215). Locking devices (216) are installed at both ends of the first adjusting plate (211) and the second adjusting plate (212). The device (216) cooperates with the slide (215) to make the first adjusting plate (211) and the second adjusting plate (212) slide along the slide (215). The positioning device (22) is installed in the slide (215) of the first adjusting plate (211) and the second adjusting plate (212) through the locking device (216). By opening or closing the locking device (216), the first adjusting plate (211), the second adjusting plate (212) and the positioning device (22) slide or are fixed.

9. A screen panel friction testing device according to claim 8, characterized in that, The positioning device (22) includes a fixing plate (221) and a fixture (222). The fixing plate (221) is fixedly installed on the locking device (216). The fixture (222) is installed on the upper end face of the fixing plate (221). The fixture (222) is provided with an opening groove, and the opening of the opening groove faces the inside of the frame.

10. A screen panel friction testing device according to claim 9, characterized in that, The lower part of the rack (1) is also equipped with a PC host (6) and a switch (5); the lighting mechanism (3) includes a controller (31) and multiple PG signal generating devices (32), the multiple PG signal generating devices (32) are respectively located below the test product, the PG signal generating devices (32) are connected to the test product through connectors, and the controller (31) is located in the middle of the multiple PG signal generating devices (32).

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