Screen panel friction test equipment

Abstract

The invention provides screen panel friction test equipment, which comprises a rack (1), a bearing mechanism (2), a lightening mechanism (3) and a test mechanism (4), the bearing mechanism (2) comprises a plurality of carriers (21), each carrier (21) comprises a plurality of positioning devices (22) which are adjusted in the horizontal direction, the lightening mechanism (3) is located below the bearing mechanism (2) and is connected with a test product for lightening, and the test mechanism (4) is connected with the lightening mechanism (3). The testing mechanism (4) is located above the bearing mechanism (2), the testing mechanism (4) comprises a three-axis linear displacement device (41), a visual device (42) and a plurality of end execution devices (43), and the three-axis linear displacement device drives the end execution devices (43) to downwards press and rub the tested product. Through the arrangement of a double-station structure, after a station worker places a product on a jig, the worker can switch according to machine types, and different pressing forces and touch routes are set through a program.

Description

Technical Field

[0001] The present application relates to the technical field of screen panel testing, and in particular to a screen panel friction testing device. Background Art

[0002] LCD panel manufacturers, in response to the increasing demand for screen sizes and processes for mobile phones and tablets, must undergo a series of tests, including vibration and friction testing, before mass production begins.

[0003] Existing screen friction testing equipment is used for batch production testing and can only test one product at a time. The size switching mechanism of the testing equipment needs to be replaced, the cost of equipment replacement is high, and the equipment is difficult to move when the test laboratory is changed. Summary of the Invention

[0004] Based on the above, the present invention aims to provide a screen panel friction testing device with a dual-station structure. After placing the product on the jig, the worker can switch between different models. By programming different pressure and touch paths, the machine can perform long-term testing and track the results in real time. This device has a compact 1000mm*1000mm footprint, making it easy to move the device to different laboratories at a low cost, thus meeting the laboratory needs of customers.

[0005] In order to solve the above problems, the following provides a screen panel friction testing device, including a frame, a supporting mechanism, a lighting mechanism and a testing mechanism, the supporting mechanism is installed in the middle of the frame, the supporting mechanism includes multiple carriers, and the carriers include multiple positioning devices adjusted in the horizontal direction, which are used to adjust the supporting size and place the test product. The lighting mechanism is located below the supporting mechanism and is connected to the test product to light up. The testing mechanism is located above the supporting mechanism. The testing mechanism includes a three-axis linear displacement device, a visual device and multiple end-effectors. The three-axis linear displacement device drives multiple end-effectors to press down and rub the test product.

[0006] The carrier includes a rectangular frame, and the frame includes a first adjustment plate, a second adjustment plate, a third adjustment plate, and a fourth adjustment plate arranged opposite to each other in pairs. The first adjustment plate, the second adjustment plate, the third adjustment plate, and the fourth adjustment plate are all provided with slide grooves, and locking devices are installed at both ends of the first adjustment plate and the second adjustment plate. The locking device cooperates with the slide groove to enable the first adjustment plate and the second adjustment plate to slide along the slide groove direction. The positioning device is installed in the slide groove of the first adjustment plate and the second adjustment plate through the locking device. By opening or closing the locking device, the first adjustment plate, the second adjustment plate and the positioning device slide or are fixed.

[0007] The positioning device includes a fixing plate and a fixture. The positioning plate is fixedly mounted on the locking device. The fixture is mounted on the inner end surface of the positioning plate. An opening groove is provided on the fixture. The opening of the opening groove faces the frame.

[0008] The three-axis linear displacement device includes a first linear drive unit, a second linear drive unit and a third linear drive unit. The driving end of the first linear unit is fixedly installed with the second linear drive unit. The second linear drive unit is provided with multiple driving ends, and each of the multiple driving ends is installed with a third linear drive unit. The driving end of the third linear drive unit is installed with the end effector.

[0009] The end effector comprises a mounting seat, a pressure sensor collector is mounted on the lower end of the mounting seat, and a friction unit is mounted on the end of the pressure sensor collector.

[0010] The end effector further includes a buffer unit, which is used to connect the pressure sensor collector and the friction unit.

[0011] The buffer unit includes a cylinder, a buffer part is installed in the cylinder and two opposite buffer holes are provided on the side wall. A through hole is provided on the upper part of the friction unit. After the upper end of the friction unit extends into the cylinder, it passes through the through hole and the buffer hole through the adjusting column.

[0012] A PC host and a switch are also installed at the lower part of the rack.

[0013] The lighting mechanism includes a controller and multiple PG signal generating devices. The multiple PG signal generating devices are respectively located below the test product. The PG signal generating devices are connected to the test product through a connector. The controller is located in the middle of the multiple PG signal generating devices.

[0014] The outside of the frame is covered with a chassis, which is provided with a feed port and a plurality of observation windows. Curtains are installed inside the chassis at locations corresponding to the observation windows. A PC control unit and a plurality of control regulators are also installed outside the chassis.

[0015] A screen panel friction test method, the test method is as follows:

[0016] (1) Manually place two test products on the carrier, fix the positioning device, plug the screen panel into the lighting mechanism and light it up, and close the protective door at the feed port;

[0017] (2) Set the force and route of the simulated pressing on the product on the device PC;

[0018] (3) The visual device takes a photo of the test product and confirms its position;

[0019] (4) The end effector starts to press down, and the three-axis linear displacement device rubs the test product from different directions along the set route;

[0020] (5) At the end of the test or in the middle of the test, the test product can be taken out manually and observed to see if there is any abnormality in the test product after being rubbed.

[0021] Compared with the prior art, the beneficial effects of the present invention mainly include the following:

[0022] This application uses two parallel carriers to form a dual-station structure, which can simultaneously test two products and is compatible with different sizes from 0.2 inches (10mm*5mm) to 13.3 inches (30mm*17mm). After the workstation personnel place the product on the fixture, they can switch according to the machine model and use different pressure and touch routes set by the program to enable the machine to test for a long time and track the results in real time, replacing manual testing. This equipment has a small space of 1000mm*1000mm, which is convenient for moving the equipment to different laboratories at a low cost. It meets the laboratory needs of customers. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the specific embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A schematic diagram of the structure of a screen panel friction testing device provided by the present invention Figure 1 ;

[0025] Figure 2 A schematic diagram of the structure of a screen panel friction testing device provided by the present invention Figure 2 ;

[0026] Figure 3 A schematic diagram of the structure of the end effector of a screen panel friction testing device provided by the present invention Figure 1 ;

[0027] Figure 4 A schematic diagram of the structure of the end effector of a screen panel friction testing device provided by the present invention Figure 2 ;

[0028] Figure 5 A schematic structural diagram of a bearing mechanism of a screen panel friction testing device provided by the present invention;

[0029] Figure 6 A schematic diagram of a chassis for a screen panel friction testing device provided by the present invention Figure 1 ;

[0030] Figure 7 A schematic diagram of a chassis for a screen panel friction testing device provided by the present invention Figure 2 . DETAILED DESCRIPTION

[0031] The foregoing and other technical aspects, features, and functions of the present invention are clearly presented in the following detailed description of a preferred embodiment with reference to the accompanying drawings. Directional terms such as up, down, left, right, front, and back, used in the following embodiments, are intended solely to refer to the directions in the accompanying drawings. Therefore, the directional terms used are for illustrative purposes only and are not intended to limit the present invention.

[0032] The following detailed description of the various embodiments of the present application is provided in conjunction with the accompanying drawings. However, those skilled in the art will appreciate that many technical details are provided in the various embodiments of the present application to facilitate a better understanding of the present application. However, even without these technical details and the various variations and modifications based on the following embodiments, the technical solutions claimed in the present application can still be implemented.

[0033] like Figure 1-Figure 7 As shown, a screen panel friction testing device includes a frame 1, a supporting mechanism 2, a lighting mechanism 3 and a testing mechanism 4. The supporting mechanism 2 is installed in the middle of the frame 1. The supporting mechanism 2 includes multiple carriers 21. The carrier 21 includes multiple positioning devices 22 that are adjusted in the horizontal direction, which are used to adjust the bearing size and place the test product. The lighting mechanism 3 is located below the supporting mechanism 2 and is connected to the test product to light up. The testing mechanism 4 is located above the supporting mechanism 2. The testing mechanism 4 includes a three-axis linear displacement device 41, a visual device 42 and multiple end-effectors 43. The three-axis linear displacement device drives multiple end-effectors to press down and rub the test product. The test products of this application include liquid crystal panels such as mobile phones and tablets.

[0034] The carrier 21 includes a rectangular frame, which includes a first adjustment plate 211, a second adjustment plate 212, a third adjustment plate 213, and a fourth adjustment plate 214 arranged opposite to each other. The first adjustment plate 211, the second adjustment plate 212, the third adjustment plate 213, and the fourth adjustment plate 214 are all provided with a slide groove 215. Both ends of the first adjustment plate 211 and the second adjustment plate 212 are installed with a locking device 216. The locking device 216 cooperates with the slide groove 215 to enable the first adjustment plate 211 and the second adjustment plate 212 to slide along the direction of the slide groove 215. The positioning device 22 is installed in the slide groove 215 of the first adjustment plate 211 and the second adjustment plate 212 through the locking device 216. By opening or closing the locking device 216, the first adjustment plate 211, the second adjustment plate 212 and the positioning device 22 are slid or fixed.

[0035] Specifically, the locking device 216 is a bolt, and a plurality of positioning holes 217 are provided in the slide groove, and the bolts cooperate with the positioning holes.

[0036] More specifically, a scale 218 is installed in the slide groove 215 to accurately measure the positions of the first adjustment plate 211 , the second adjustment plate 212 and the positioning device 22 .

[0037] More specifically, the support mechanism 2 also includes a support platform 219, on which multiple carriers are mounted in parallel. The support platform is also provided with multiple connection holes for connecting the lighting mechanism to the test product for lighting. In practice, multiple carriers can be installed on the support platform, and selection can be made based on actual needs to meet the actual situation. The structure and layout of the three-axis linear displacement device are then designed based on the position of the carriers.

[0038] The positioning device 22 includes a fixing plate 221 and a fixture 222. The positioning plate 221 is fixedly mounted on the locking device 216. The fixture 222 is mounted on the upper end surface of the positioning plate 221. An opening groove is provided on the fixture 222, and the opening of the opening groove faces the frame.

[0039] 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 driving end of the first linear drive unit 411 is fixedly mounted to the second linear drive unit 412. The second linear drive unit 412 is provided with multiple driving ends, each of which is mounted with a third linear drive unit 413. The driving end of the third linear drive unit 413 is mounted with the end effector 43. Specifically, in the embodiment of the present application, the second linear drive unit is provided with two driving ends, which can drive the end effector to move separately, thereby testing the test product according to a predetermined force and route.

[0040] The end effector 43 includes a mounting base 431 , a pressure sensor collector 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 collector 432 .

[0041] The end effector 43 further includes a buffer unit 434 , which is used to connect the pressure sensor collector 432 and the friction unit 433 .

[0042] The buffer unit 434 includes a cylinder 4341, a buffer part 4342 is installed in the cylinder 4341 and two opposite buffer holes 4343 are provided on the side wall. A through hole is provided on the upper part of the friction unit 433. After the upper end of the friction unit 433 extends into the cylinder 4341, it passes through the through hole and the buffer hole 4343 through the adjusting column 4344.

[0043] Specifically, the friction unit 433 includes a rod body and a probe mounted at the lower end of the rod body, wherein the probe is a copper rod probe or a stylus pen. The probe can be selected according to actual conditions to meet actual needs.

[0044] A PC host 6 and a switch 5 are also installed at the lower part of the rack 1.

[0045] 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 a connector. The controller 31 is located in the middle of the multiple PG signal generating devices 32.

[0046] The exterior of the rack 1 is covered by a chassis 7, which is provided with a feed port and a plurality of observation windows. Curtains 73 are installed inside the chassis 7 at locations corresponding to the observation windows. A PC control unit 71 and a plurality of control regulators 72 are also installed on the exterior of the chassis 7. The PC control unit 71 stores a data acquisition and processing control system. Specifically, an observation window is provided on each side wall of the chassis except for the feed port. Shields are installed at the feed port and the plurality of observation windows. The shields include a rotating shaft and a curtain. The rotating shaft can adjust the shielding area of ​​the curtain to meet the needs of personnel observation and confidentiality of products. Specifically, the curtain is made of a light-blocking material to prevent external light from entering the interior of the chassis and affecting optical detection.

[0047] Specifically, the plurality of control regulators 72 include a force feedback sensor, a control button, and an EMO button.

[0048] Specifically, the visual device 42 is mounted on the top of the chassis, above the support mechanism 2, and is connected to the data acquisition, processing, and control system. More specifically, the visual device utilizes a wide-field camera. As an intelligent industrial camera, it features high resolution, fast image processing capabilities, and stable reading speeds.

[0049] Compared with the prior art, the beneficial effects of the present invention mainly include the following:

[0050] This application uses two parallel carriers to form a dual-station structure, which can simultaneously test two products and is compatible with different sizes from 0.2 inches (10mm*5mm) to 13.3 inches (30mm*17mm). After the workstation personnel place the product on the fixture, they can switch according to the machine model and use different pressure and touch routes set by the program to enable the machine to test for a long time and track the results in real time, replacing manual testing. This equipment has a small space of 1000mm*1000mm, which is convenient for moving the equipment to different laboratories at a low cost. It meets the laboratory needs of customers.

[0051] The working method of the screen panel friction testing device of the present application is as follows:

[0052] (1) Manually place two touch screens on the carrier. The two products can be of different sizes at the same time;

[0053] (2) After the personnel adjust and fix the carrier, plug in the test product and light it up;

[0054] (3) Close the protective door of the feeding area;

[0055] (4) Set the force and route of the simulated pressing on the test product on the device PC control unit;

[0056] (5) The wide-field camera inside the chassis takes a picture of the test product and confirms the product position;

[0057] (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;

[0058] (7) The probe or friction pen should be grounded to prevent product damage caused by static electricity;

[0059] (8) A pressure sensor head is installed on the probe or friction pen, and personnel can observe the downward pressure through the external sensor amplifier;

[0060] (9) At the end of the test or in the middle of the test, the experimenter can take out the product and observe whether there is any abnormality on the screen after being rubbed;

[0061] (10) Through long-term verification, the reliability of the test product samples after upgrading can be achieved.

[0062] In order to facilitate the description of the present invention, some common English nouns or letters are used for illustrative reference only and are not intended to be restrictive or specific. The scope of protection of the present invention should not be limited by their possible Chinese translations or specific letters.

[0063] It should also be noted that, in this article, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

Claims

1. A screen panel friction testing device, characterized in that: The invention comprises a frame (1), a bearing mechanism (2), a lighting mechanism (3) and a testing mechanism (4); the bearing mechanism (2) is installed in the middle of the frame (1); the bearing mechanism (2) comprises a plurality of carriers (21); the carriers (21) comprise a plurality of positioning devices (22) that are adjusted in the horizontal direction and are used to adjust the bearing size and place the test product; the lighting mechanism (3) is located below the bearing mechanism (2) and is connected to the test product for lighting; the testing mechanism (4) is located above the bearing mechanism (2); the testing mechanism (4) comprises a three-axis linear displacement device (41), a visual device (42) and a plurality of end-actuating devices (43); the three-axis linear displacement device drives the plurality of end-actuating devices (43) to press down and rub the test product.

2. A screen panel friction testing device according to claim 1, characterized in that: The carrier (21) includes a rectangular frame, the frame including a first adjustment plate (211), a second adjustment plate (212), a third adjustment plate (213), and a fourth adjustment plate (214) arranged opposite to each other, the first adjustment plate (211), the second adjustment plate (212), the third adjustment plate (213), and the fourth adjustment plate (214) are all provided with a slide groove (215), and both ends of the first adjustment plate (211) and the second adjustment plate (212) are installed with a locking device (216), the locking device The device (216) cooperates with the slide groove (215) to enable the first adjustment plate (211) and the second adjustment plate (212) to slide along the direction of the slide groove (215); the positioning device (22) is installed in the slide groove (215) of the first adjustment plate (211) and the second adjustment plate (212) through the locking device (216); by opening or closing the locking device (216), the first adjustment plate (211), the second adjustment plate (212) and the positioning device (22) are slid or fixed.

3. A screen panel friction testing device according to claim 2, characterized in that: The positioning device (22) comprises a fixing plate (221) and a fixture (222), wherein the positioning plate (221) is fixedly mounted on the locking device (216), and the fixture (222) is mounted on the upper end surface of the positioning plate (221), and an opening groove is provided on the fixture (222), wherein the opening of the opening groove faces the inside of the frame.

4. The screen panel friction testing device according to claim 1, characterized in that: The three-axis linear displacement device (41) comprises a first linear drive unit (411), a second linear drive unit (412) and a third linear drive unit (413); the driving end of the first linear drive unit (411) is fixedly mounted with the second linear drive unit (412); the second linear drive unit (412) is provided with a plurality of driving ends, each of which is mounted with the third linear drive unit (413); and the driving end of the third linear drive unit (413) is mounted with the end effector (43).

5. The screen panel friction testing device according to claim 4, characterized in that: The end effector (43) comprises a mounting seat (431), a pressure sensor collector (432) is mounted at the lower end of the mounting seat (431), and a friction unit (433) is mounted at the end of the pressure sensor collector (432).

6. The screen panel friction testing device according to claim 5, characterized in that: The end effector (43) further comprises a buffer unit (434), and the buffer unit (434) is used to connect the pressure sensor collector (432) and the friction unit (433).

7. The screen panel friction testing device according to claim 6, characterized in that: The buffer unit (434) includes a cylinder (4341), a buffer member (4342) is installed in the cylinder (4341), and two opposite buffer holes (4343) are provided on the side wall. A through hole is provided on the upper part of the friction unit (433). After the upper end of the friction unit (433) extends into the cylinder (4341), it passes through the through hole and the buffer hole (4343) through the adjusting column (4344).

8. The screen panel friction testing device according to claim 1, characterized in that: A PC host (6) and a switch (5) are also installed at the lower part of the rack (1); the lighting mechanism (3) includes a controller (31) and a plurality of PG signal generating devices (32), wherein the plurality of PG signal generating devices (32) are respectively located below the test product, the PG signal generating devices (32) are connected to the test product via a connector, and the controller (31) is located in the middle of the plurality of PG signal generating devices (32).

9. The screen panel friction testing device according to claim 1, characterized in that: The frame (1) is covered with a chassis (7) on the outside. The chassis (7) is provided with a feed port and a plurality of observation windows. Curtains (73) are installed inside the chassis (7) at locations corresponding to the observation windows. A PC control unit (71) and a plurality of control regulators (72) are also installed on the outside of the chassis (7).

10. A screen panel friction testing method according to claims 1-9, characterized in that: The test method is as follows: (1) Manually place two test products on the carrier, fix the positioning device, plug the screen panel into the lighting mechanism and light it up, and close the protective door at the feed port; (2) Set the force and route of the simulated pressing on the product on the device PC; (3) The visual device takes a photo of the test product and confirms its position; (4) The end effector starts to press down, and the three-axis linear displacement device rubs the test product from different directions along the set route; (5) At the end of the test or in the middle of the test, the test product can be taken out manually and observed to see if there is any abnormality in the test product after being rubbed.

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