Automatic false pressure test equipment
By combining the X-axis, Y-axis, and R-axis moving devices with an adjustable fixture base and linear moving parts, the problems of inconsistent pressure and screen fixture adaptability under sham pressure testing equipment are solved, achieving pressure consistency and multi-size adaptability, and reducing material costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-28
- Publication Date
- 2026-04-10
AI Technical Summary
Existing sham pressure testing equipment has inconsistent pressure, resulting in poor contact, and the screen fixture cannot adapt to screens of different sizes, increasing material costs.
The device employs X-axis, Y-axis, and R-axis moving mechanisms combined with an adjustable clamp base. The first and second linear moving parts enable precise alignment and stable movement of the pressing component. Combined with the air intake and positioning parts, the screen is positioned and fixed, avoiding inconsistent pressure from manual operation.
To ensure consistent downward pressure, adapt to testing of screens of different sizes, reduce the need for specialized screen fixtures, and lower costs.
Smart Images
Figure CN121831291A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of sham pressure testing technology, and more particularly to an automatic sham pressure testing device. Background Technology
[0002] The sham pressure test is a crucial test in the screen production process to prevent defective products from reaching the next stage. The sham pressure test involves applying voltage to the screen to assess its performance.
[0003] Existing sham pressure testing equipment is relatively simple, mostly involving manual pressing of the component to perform the sham pressure test. However, manual pressing can easily lead to inconsistent pressure each time, and insufficient pressure can easily cause poor contact, affecting the sham pressure test and causing good products to be tested as defective products, resulting in waste.
[0004] Furthermore, existing screen fixtures used in sham pressure testing mostly employ the method of setting positioning slots, which can only be used for a specific screen size model. To perform sham pressure testing on screens of different sizes, different screen fixtures need to be configured, increasing material costs.
[0005] Furthermore, existing screen fixtures are mostly fixed installations, making it inconvenient to adjust their position, which in turn makes it inconvenient to adjust the position of the screen under test and to press down components to dock with the screen under test.
[0006] Therefore, existing technologies have shortcomings and need to be improved. Summary of the Invention
[0007] The technical problem to be solved by the present invention is to provide an automatic dummy pressure testing device to ensure consistent downward pressure and avoid poor contact caused by inconsistent pressure during manual operation; it also facilitates testing of screens of different sizes and allows for easy adjustment of the screen's position.
[0008] The technical solution of the present invention is as follows: An automatic sham pressure testing device is provided, comprising: a mounting frame, an adjustable clamp base and a pressing device respectively mounted on the mounting frame, and a screen clamp mounted on the adjustable clamp base. The adjustable clamp base includes: an X-axis moving device mounted on the mounting frame, a Y-axis moving device mounted on the X-axis moving device, and an R-axis moving device mounted on the Y-axis moving device. The screen clamp includes: a tray mounted on the R-axis moving device, and a positioning element mounted on the tray. The tray has a screen placement area, and the screen placement area has a plurality of air suction holes. The positioning element is located on the side and bottom edge of the screen placement area.
[0009] The pressing device includes: a first linear moving member mounted on the mounting bracket; a first guide limiting block connected to the non-moving end of the first linear moving member; a first guide limiting plate connected to the moving end of the first linear moving member; a second linear moving member mounted on the first guide limiting plate; a second guide limiting block connected to the non-moving end of the second linear moving member; a second guide limiting plate connected to the moving end of the second linear moving member; and a pressing assembly connected to the second guide limiting plate. The first guide limiting plate is provided with a first guide limiting groove, and the first guide limiting block cooperates with the first guide limiting groove. The second guide limiting plate is provided with a second guide limiting groove, and the second guide limiting block cooperates with the second guide limiting groove. The first linear moving member and the second linear moving member are parallel. The pressing assembly is positioned above the screen placement area.
[0010] The X-axis moving device is used for X-axis movement, the Y-axis moving device is used for Y-axis movement, and the R-axis moving device is used for rotation, thereby adjusting the position of the screen clamp, which in turn facilitates the adjustment of the position of the screen under test. The positioning component can position the screen under test, and the suction hole can draw air in, firmly adhering the screen under test to the screen placement area. By adjusting the position of the positioning component, screens of different sizes can be positioned without the need for a dedicated screen clamp for each screen, saving costs. The first guide limiting groove cooperates with the first guide limiting block to ensure that the moving end of the first linear moving component does not deviate during movement, and the second guide limiting groove cooperates with the second guide limiting block to ensure that the moving end of the second linear moving component does not deviate during movement, which in turn ensures that the pressing component does not deviate during movement.
[0011] The pressing device employs two linear moving parts: a first linear moving part and a second linear moving part. The first linear moving part moves at a higher speed, while the second linear moving part moves at a lower speed. When the pressing component needs to press down, the first linear moving part moves quickly. Once in position, the second linear moving part moves more slowly to ensure the pressing component accurately aligns with the gold fingers on the FPC of the screen under test. After the dummy pressure test is completed, the first linear moving part moves quickly to retract the pressing component. Using the first and second linear moving parts effectively ensures consistent pressing pressure, avoiding poor contact caused by inconsistent pressure during manual operation, and guaranteeing the consistency of the dummy pressure test.
[0012] Furthermore, the pressing device further includes: a first proximity switch mounted on the non-moving end of the first linear moving member, a first pressing block mounted on the first guide limiting plate, a second proximity switch mounted on the non-moving end of the second linear moving member, and a second pressing block mounted on the second guide limiting plate; the first proximity switch cooperates with the first pressing block, and the second proximity switch cooperates with the second pressing block. The first proximity switch and the first pressing block are used to determine whether the moving end of the first linear moving member has moved into position. After the first proximity switch contacts the first pressing block, it is considered that the moving end has moved into position, and the moving end of the first linear moving member stops moving; similarly, the second proximity switch and the second pressing block are used to determine whether the moving end of the second linear moving member has moved into position. After the second proximity switch contacts the second pressing block, it is considered that the moving end of the second linear moving member has moved into position, and the moving end of the second linear moving member stops moving.
[0013] Furthermore, the pressing device further includes: a guide post connected to the first linear moving member, a reinforced guide limiting plate connected to the first guide limiting plate, and a mounting plate mounted on the first guide limiting plate; the reinforced guide limiting plate is provided with a guide hole, the guide post is inserted into the guide hole, and the second linear moving member is mounted on the first guide limiting plate through the mounting plate. The guide post and the reinforced guide limiting plate are used to enhance the stability of the movement of the first guide limiting plate.
[0014] Furthermore, the pressing assembly includes: a support plate connected to the second guide limiting plate, an upper clamping block and a pressing head respectively connected to the support plate, and a lower clamping block connected to the upper clamping block. The upper clamping block and the lower clamping block cooperate to clamp the FPC used for screen testing, and the gold fingers of the FPC are located directly below the pressing head.
[0015] Furthermore, the first linear moving component is a conventional cylinder, and the second linear moving component is a buffer cylinder.
[0016] Furthermore, the positioning component is provided with an elongated hole, through which a screw passes to connect with the support plate, thus connecting the positioning component to the support plate. By adjusting the position of the screw in the elongated hole, the size of the screen placement area can be adjusted, enabling sham pressure testing of screens of different sizes.
[0017] Furthermore, the tray is provided with a positioning groove, and the positioning element is disposed in the positioning groove; the tray is provided with two recesses, which are respectively disposed on both sides of the screen placement area. The positioning groove can ensure the accuracy of the direction of movement of the positioning element.
[0018] Furthermore, the automatic dummy pressure testing equipment also includes: a serpentine lamp and a handle mounted on the mounting frame. The serpentine lamp is used for illumination, and the handle facilitates handling.
[0019] Furthermore, the automatic sham pressure testing equipment also includes: a main unit installed in the mounting frame, a button connected to the main unit, and a display screen installed on the mounting frame; the main unit is respectively connected to the FPC for screen testing of the pressure assembly, the button, and the display screen.
[0020] Furthermore, the mounting frame includes: an upper frame, a lower frame connected to the upper frame, an adjustable clamp base mounted on the lower frame, and a pressing device mounted on the upper frame.
[0021] Using the above solution, this invention provides an automatic dummy pressure testing device. The pressing device employs a first linear moving part and a second linear moving part. The first linear moving part has a high moving end speed, while the second linear moving part has a low moving end speed. When the pressing component needs to press down, the moving end of the first linear moving part moves quickly. After reaching the correct position, the moving end of the second linear moving part moves more slowly to ensure the pressing component accurately aligns with the gold fingers on the FPC of the screen under test. After the dummy pressure test is completed, the moving end of the first linear moving part moves quickly to retract the pressing component. Using the first and second linear moving parts to achieve the pressing of the component effectively ensures the consistency of the pressing force, avoiding poor contact caused by inconsistent pressure during manual operation, and guaranteeing the consistency of the dummy pressure test. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of a structure according to an embodiment of the present invention;
[0023] Figure 2 for Figure 1 A structural schematic diagram from another perspective of the embodiment;
[0024] Figure 3 This is a schematic diagram of the pressing device.
[0025] Figure 4 This is an exploded view of the pressing device;
[0026] Figure 5 An exploded view of the pressing device from another perspective;
[0027] Figure 6 This is a schematic diagram of the downward pressure assembly;
[0028] Figure 7 Exploded view of the adjustable clamp base;
[0029] Figure 8 This is a schematic diagram of the screen clamp structure. Detailed Implementation
[0030] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.
[0031] Please see Figures 1-8 This embodiment provides an automatic sham pressure testing device, including: a mounting frame 10, an adjustable clamp base 11 and a pressing device 12 respectively mounted on the mounting frame 10, and a screen clamp 13 mounted on the adjustable clamp base 11. The adjustable clamp base 11 includes: an X-axis moving device 14 mounted on the mounting frame 10, a Y-axis moving device 15 mounted on the X-axis moving device 14, and an R-axis moving device 16 mounted on the Y-axis moving device 15. The screen clamp 13 includes: a support plate 17 mounted on the R-axis moving device 16, and a positioning member 18 mounted on the support plate 17. The support plate 17 is provided with a screen placement area 19, and the screen placement area 19 is provided with a plurality of air suction holes 20. The positioning member 18 is provided on the side and bottom edge of the screen placement area 19.
[0032] The pressing device 12 includes: a first linear moving member 21 mounted on the mounting bracket 10; a first guide limiting block 22 connected to the non-moving end of the first linear moving member 21; a first guide limiting plate 23 connected to the moving end of the first linear moving member 21; a second linear moving member 24 mounted on the first guide limiting plate 23; a second guide limiting block 25 connected to the non-moving end of the second linear moving member 24; a second guide limiting plate 26 connected to the moving end of the second linear moving member 24; and a pressing assembly 27 connected to the second guide limiting plate 26. The first guide limiting plate 23 is provided with a first guide limiting groove 28, and the first guide limiting block 22 cooperates with the first guide limiting groove 28. The second guide limiting plate 26 is provided with a second guide limiting groove 29, and the second guide limiting block 25 cooperates with the second guide limiting groove 29. The first linear moving member 21 and the second linear moving member 24 are parallel. The pressing assembly 27 is disposed above the screen placement area 19.
[0033] The X-axis moving device 14 is used to realize X-axis movement, the Y-axis moving device 15 is used to realize Y-axis movement, and the R-axis moving device 16 is used for rotation, thereby adjusting the position of the screen clamp 13, which also facilitates the adjustment of the position of the screen under test. The positioning member 18 can position the screen under test, and the suction hole 20 can draw air, which can firmly attach the screen under test to the screen placement area 19. By adjusting the position of the positioning member 18, screens of different sizes can be positioned without the need to configure a dedicated screen clamp 13 for each screen, saving costs. The first guide limiting groove 28 cooperates with the first guide limiting block 22 to ensure that the moving end of the first linear moving member 21 does not deviate during movement, and the second guide limiting groove 29 cooperates with the second guide limiting block 25 to ensure that the moving end of the second linear moving member 24 does not deviate during movement, which also ensures that the pressing component 27 does not deviate during movement.
[0034] The pressing device 12 employs a first linear moving part 21 and a second linear moving part 24. The first linear moving part 21 moves at a higher speed, while the second linear moving part 24 moves at a lower speed. When the pressing component 27 needs to press down, the first linear moving part 21 moves quickly. After reaching its position, the second linear moving part 24 moves more slowly to ensure the pressing component 27 accurately aligns with the gold fingers on the FPC of the screen under test. After the dummy pressure test is completed, the first linear moving part 21 moves quickly to retract the pressing component 27. Using the first linear moving part 21 and the second linear moving part 24 to press down the component 27 effectively ensures the consistency of the pressing force, avoiding poor contact caused by inconsistent pressure during manual operation, and guaranteeing the consistency of the dummy pressure test.
[0035] In this embodiment, the pressing device 12 further includes: a first proximity switch 30 installed on the non-moving end of the first linear moving member 21, a first pressing block 31 installed on the first guide limiting plate 23, a second proximity switch 32 installed on the non-moving end of the second linear moving member 24, and a second pressing block 33 installed on the second guide limiting plate 26; the first proximity switch 30 cooperates with the first pressing block 31, and the second proximity switch 32 cooperates with the second pressing block 33. The first proximity switch 30 and the first pressing block 31 are used to determine whether the moving end of the first linear moving member 21 has moved into position. After the first proximity switch 30 contacts the first pressing block 31, it is considered that the moving end has moved into position, and the moving end of the first linear moving member 21 stops moving; similarly, the second proximity switch 32 and the second pressing block 33 are used to determine whether the moving end of the second linear moving member 24 has moved into position. After the second proximity switch 32 contacts the second pressing block 33, it is considered that the moving end has moved into position, and the moving end of the second linear moving member 24 stops moving.
[0036] In this embodiment, the pressing device 12 further includes: a guide post 34 connected to the first linear moving member 21, a reinforced guide limiting plate 35 connected to the first guide limiting plate 23, and a mounting plate 36 mounted on the first guide limiting plate 23; the reinforced guide limiting plate 35 is provided with a guide hole, the guide post 34 is inserted into the guide hole, and the second linear moving member 24 is mounted on the first guide limiting plate 23 through the mounting plate 36. The guide post 34 and the reinforced guide limiting plate 35 are used to enhance the stability of the movement of the first guide limiting plate 23.
[0037] In this embodiment, the pressing component 27 includes: a support plate 37 connected to the second guide limiting plate 26, an upper clamping block 38 and a pressing head 39 respectively connected to the support plate 37, and a lower clamping block 40 connected to the upper clamping block 38. The upper clamping block 38 and the lower clamping block 40 cooperate to clamp the FPC used for screen testing. The gold fingers of the FPC are located directly below the pressing head 39.
[0038] In this embodiment, the first linear moving member 21 is a regular cylinder, and the second linear moving member 24 is a buffer cylinder.
[0039] In this embodiment, the positioning member 18 is provided with an elongated hole 41, and a screw passes through the elongated hole 41 to connect with the support plate 17, thereby connecting the positioning member 18 and the support plate 17. By adjusting the position of the screw in the elongated hole 41, the size of the screen placement area 19 can be adjusted, enabling sham pressure testing of screens of different sizes.
[0040] In this embodiment, the tray 17 is provided with a positioning groove 42, and the positioning member 18 is disposed in the positioning groove 42; the tray 17 is provided with two grooves 43, which are respectively disposed on both sides of the screen placement area 19. The positioning groove 42 can ensure the accuracy of the direction of movement of the positioning member 18.
[0041] In this embodiment, the automatic sham pressure testing equipment further includes: a serpentine lamp 44 and a handle 45 mounted on the mounting frame 10. The serpentine lamp 44 is used for illumination, and the handle 45 facilitates transportation.
[0042] In this embodiment, the automatic sham pressure testing device further includes: a host 46 installed in the mounting frame 10, a button 47 connected to the host 46, and a display screen 48 installed on the mounting frame 10; the host 46 is connected to the FPC for screen testing of the pressure assembly 27, the button 47, and the display screen 48 respectively.
[0043] In this embodiment, the mounting frame 10 includes: an upper frame, a lower frame connected to the upper frame 49, an adjustable clamp base 11 mounted on the lower frame, and a pressing device 12 mounted on the upper frame.
[0044] In summary, this invention provides an automatic dummy pressure testing device. The pressing device employs a first linear moving part and a second linear moving part. The first linear moving part has a high moving speed, while the second linear moving part has a low moving speed. When the pressing component needs to press down, the first linear moving part moves quickly. After reaching the correct position, the second linear moving part moves more slowly to ensure the pressing component accurately aligns with the gold fingers on the FPC of the screen under test. After the dummy pressure test is completed, the first linear moving part moves quickly to retract the pressing component. Using the first and second linear moving parts to implement the pressing component effectively ensures the consistency of the pressing force, avoiding poor contact caused by inconsistent pressure during manual operation, and guaranteeing the consistency of the dummy pressure test.
[0045] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. An automatic dummy pressure testing device, characterized in that, include: The mounting frame includes an adjustable clamp base and a pressing device mounted on it, and a screen clamp mounted on the adjustable clamp base. The adjustable clamp base includes an X-axis moving device mounted on the mounting frame, a Y-axis moving device mounted on the X-axis moving device, and an R-axis moving device mounted on the Y-axis moving device. The screen clamp includes a tray mounted on the R-axis moving device and a positioning element mounted on the tray. The tray has a screen placement area with several air suction holes. The positioning element is located on the side and bottom edge of the screen placement area. The pressing device includes: a first linear moving member mounted on the mounting bracket; a first guide limiting block connected to the non-moving end of the first linear moving member; a first guide limiting plate connected to the moving end of the first linear moving member; a second linear moving member mounted on the first guide limiting plate; a second guide limiting block connected to the non-moving end of the second linear moving member; a second guide limiting plate connected to the moving end of the second linear moving member; and a pressing assembly connected to the second guide limiting plate. The first guide limiting plate is provided with a first guide limiting groove, and the first guide limiting block cooperates with the first guide limiting groove. The second guide limiting plate is provided with a second guide limiting groove, and the second guide limiting block cooperates with the second guide limiting groove. The first linear moving member and the second linear moving member are parallel. The pressure-down component is positioned above the screen placement area.
2. The automatic dummy pressure testing device according to claim 1, characterized in that, The pressing device further includes: a first proximity switch installed on the non-moving end of the first linear moving member, a first pressing block installed on the first guide limiting plate, a second proximity switch installed on the non-moving end of the second linear moving member, and a second pressing block installed on the second guide limiting plate; the first proximity switch cooperates with the first pressing block, and the second proximity switch cooperates with the second pressing block.
3. The automatic dummy pressure testing device according to claim 1, characterized in that, The pressing device further includes: a guide post connected to the first linear moving member, a reinforced guide limiting plate connected to the first guide limiting plate, and a mounting plate installed on the first guide limiting plate; the reinforced guide limiting plate is provided with a guide hole, the guide post is inserted into the guide hole, and the second linear moving member is installed on the first guide limiting plate through the mounting plate.
4. The automatic dummy pressure testing device according to claim 1, characterized in that, The pressing assembly includes: a support plate connected to the second guide limiting plate, an upper clamping block and a pressing head connected to the support plate respectively, and a lower clamping block connected to the upper clamping block. The upper clamping block and the lower clamping block cooperate to clamp the FPC used for screen testing. The gold fingers of the FPC are located directly below the pressing head.
5. The automatic dummy pressure testing device according to claim 1, characterized in that, The first linear moving component is a conventional cylinder, and the second linear moving component is a buffer cylinder.
6. The automatic dummy pressure testing device according to claim 1, characterized in that, The positioning component is provided with an elongated hole, and the screw passes through the elongated hole to connect with the support plate, thereby connecting the positioning component with the support plate.
7. The automatic dummy pressure testing device according to claim 1, characterized in that, The tray is provided with a positioning groove, and the positioning element is disposed in the positioning groove; the tray is provided with two grooves, and the two grooves are respectively disposed on both sides of the screen placement area.
8. The automatic dummy pressure testing device according to claim 1, characterized in that, Also includes: The serpentine lamp and handle are mounted on the mounting bracket.
9. An automatic dummy pressure testing device according to claim 1, characterized in that, Also includes: The host is installed in the mounting bracket, the buttons are connected to the host, and the display screen is installed on the mounting bracket; the host is connected to the FPC, buttons, and display screen of the pressing assembly for screen testing, respectively.
10. An automatic dummy pressure testing device according to claim 1, characterized in that, The mounting frame includes: an upper frame, a lower frame connected to the upper frame, an adjustable clamp base mounted on the lower frame, and a pressing device mounted on the upper frame.