A display module pressing fixture

Abstract

The present invention discloses a display module pressing jig, comprising a matching upper mold and a lower mold, wherein a rectangular support platform is provided on the lower mold, and four sliders movable in the horizontal direction are also provided on the lower mold, wherein the four sliders are respectively arranged near the four sides of the support platform, and any slider can move in a direction perpendicular to the side of the support platform near which the slider is close, and the upper mold comprises a pressing plate that can be raised and lowered in the vertical direction, and a side of the pressing plate near the lower mold is provided with four protruding guide blocks, and the four guide blocks respectively correspond to the four sliders one by one to abut against and drive the sliders close to the support platform. The display module pressing jig provided by the present invention enables the geometric center of the bottom shell and the geometric center of the unit board to be located on the same vertical line after the bottom shell and the unit board are bonded and fixed, thereby improving the position accuracy of the lamp beads on the display module and ensuring that the LED display screen has a good display effect.

Description

Technical Field

[0001] The present invention relates to the technical field of display screens, and in particular to a display module pressing jig. Background Art

[0002] Currently, in the production process of LED display screens, a pressing jig is usually used to position the unit board and the bottom shell during assembly, and pressure is maintained after the unit board and the bottom shell are bonded to ensure that the unit board and the bottom shell are firmly bonded.

[0003] like Figure 1 As shown, since the unit board 1 and the bottom shell 2 are usually designed to be rectangular, the existing pressing jig generally uses a right-angled block to abut against one corner of the unit board 1 or the bottom shell 2, and then pushes the unit board 1 or the bottom shell 2 on the other side of the unit board 1 or the bottom shell 2 to make it close to the block to achieve the positioning of the unit board 1 or the bottom shell 2. However, there are certain errors in the size of the unit board 1 or the bottom shell 2 during the production process, that is, the side length of the unit board 1 is not consistent with the side length of the bottom shell 2. Therefore, using a right-angled block for positioning during the bonding process will cause the bottom shell 2 to deviate to one corner of the unit board 1, resulting in the position of the lamp beads on the obtained display module being offset, which will have an adverse effect on the later use of the LED display, especially after multiple display modules are spliced, the misalignment of some lamp beads will seriously affect the overall display effect of the LED display. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a display module pressing fixture capable of centrally pressing a bottom shell onto a unit board.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a display module pressing fixture, including a matching upper mold and a lower mold, the lower mold is provided with a rectangular support platform, and the lower mold is also provided with four sliders that can move in the horizontal direction, the four sliders are respectively arranged close to the four sides of the support platform, and any one of the sliders can move in a direction perpendicular to the side of the support platform close to the slider, the upper mold includes a pressing plate that can be raised and lowered in the vertical direction, and four protruding guide blocks are provided on a side of the pressing plate close to the lower mold, and the four guide blocks respectively correspond to the four sliders one by one to abut and drive the sliders close to the support platform.

[0006] The beneficial effects of the present invention are as follows: the display module pressing fixture provided by the present invention positions and maintains pressure on the unit board and the bottom shell through the cooperation of the upper mold and the lower mold. When assembling the display module, the unit board and the bottom shell are placed on the support table in sequence. At this time, the unit board and the bottom shell are located in the area surrounded by four sliders. After the unit board and the bottom shell are placed, the upper mold is pressed on the lower mold from directly above. At this time, the four guide blocks on the upper mold are respectively abutted against the four sliders on the lower mold one by one, and the four sliders are driven to approach the unit board and the bottom shell synchronously, so that the four sliders are respectively abutted against the four side edges of the bottom shell to position the bottom shell on the unit board, and the four sliders are moved synchronously to center the position of the bottom shell on the unit board, so that after the bottom shell and the unit board are bonded and fixed, the geometric center of the bottom shell and the geometric center of the unit board are located on the same vertical line, thereby improving the position accuracy of the lamp beads on the display module and ensuring that the LED display screen has a good display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a structural schematic diagram of a display module in the prior art;

[0008] Figure 2 It is a structural schematic diagram of a display module pressing fixture according to the first embodiment of the present invention;

[0009] Figure 3 An exploded view of a display module pressing jig according to Embodiment 1 of the present invention;

[0010] Figure 4 is a cross-sectional view of a display module pressing jig according to Embodiment 1 of the present invention;

[0011] Figure 5 for Figure 4 The enlarged view of point A in the middle;

[0012] Figure 6 is a cross-sectional view of another cross section of the display module pressing jig according to the first embodiment of the present invention;

[0013] Figure 7 for Figure 6 The enlarged view of point B in the middle;

[0014] Figure 8 This is a schematic structural diagram of a lower mold in a display module pressing jig according to the first embodiment of the present invention;

[0015] Fig. 9 It is a structural schematic diagram of an upper mold in a display module pressing jig according to the first embodiment of the present invention;

[0016] Fig.10 is a cross-sectional view of a display module pressing fixture according to the second embodiment of the present invention;

[0017] Fig.11 It is a cross-sectional view of a display module pressing fixture according to the third embodiment of the present invention.

[0018] Description of labels:

[0019] 1. Unit board; 2. Bottom shell; 3. Upper mold; 31. Pressing plate; 32. Guide hole; 33. Driving member; 34. Second pin; 35. Second elastic member; 36. Avoiding groove; 4. Lower mold; 41. Support platform; 42. Guide column; 43. Limiting block; 44. Guide rail; 45. Elastic pad; 5. Sliding block; 51. Second inclined surface; 6. Guide block; 61. First inclined surface; 7. Fixed block; 71. First pin; 72. First elastic member; 8. Pressing block; 81. Contour surface; 9. Ring plate; 91. Third pin; 92. Third elastic member. DETAILED DESCRIPTION

[0020] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0021] Please refer to Figures 1 to 11 A display module pressing jig comprises a matching upper die 3 and a lower die 4, the lower die 4 is provided with a rectangular support platform 41, the lower die 4 is also provided with four sliders 5 movable in the horizontal direction, the four sliders 5 are respectively arranged close to the four sides of the support platform 41, and any one of the sliders 5 can move in a direction perpendicular to a side of the support platform 41 close to the slider 5, the upper die 3 comprises a pressing plate 31 which can be raised and lowered in the vertical direction, the pressing plate 31 is provided with four protruding guide blocks 6 on one side close to the lower die 4, the four guide blocks 6 respectively correspond to the four sliders 5 one by one to abut against and drive the sliders 5 close to the support platform 41.

[0022] From the above description, it can be seen that the beneficial effect of the present invention is that the display module pressing fixture provided by the present invention enables the geometric center of the bottom shell 2 and the geometric center of the unit board 1 to be located on the same vertical line after the bottom shell 2 and the unit board 1 are bonded and fixed, thereby improving the position accuracy of the lamp beads on the display module and ensuring that the LED display screen has a good display effect.

[0023] Furthermore, the guide block 6 has a first inclined surface 61 , and the sliding block 5 is provided with a second inclined surface 51 matching with the first inclined surface 61 .

[0024] From the above description, it can be seen that the first inclined surface 61 arranged on the guide block 6 cooperates with the second inclined surface 51 arranged on the slider 5 so that the slider 5 can move toward the support platform 41 under the drive of the guide block 6, ensuring that the slider 5 moves smoothly on the lower mold 4.

[0025] Furthermore, the lower mold 4 is also provided with a guide column 42 , the axial direction of the guide column 42 is consistent with the vertical direction, and the upper mold 3 is provided with a guide hole 32 matched with the guide column 42 .

[0026] From the above description, it can be seen that a guide column 42 is provided on the lower mold 4 for guiding the upper mold 3 to cooperate with the lower mold 4, and a guide hole 32 cooperating with the guide column 42 is provided on the upper mold 3 to ensure that the upper mold 3 moves along the vertical direction when the upper mold 3 cooperates with the lower mold 4, so that the four guide blocks 6 are in one-to-one contact with the four sliders 5 at the same time and drive the four sliders 5 to move synchronously.

[0027] Furthermore, four limit blocks 43 are provided on the lower mold 4 . The limit blocks 43 are in a right angle shape and are respectively abutted against four corners of the support platform 41 . A slider 5 is provided between any two adjacent limit blocks 43 .

[0028] From the above description, it can be seen that right-angled limit blocks 43 are respectively set at the four corners of the support platform 41 to enclose an area for accommodating the unit board 1 and the bottom shell 2 and pre-position the unit board 1 and the bottom shell 2 to facilitate placing the unit board 1 and the bottom shell 2 on the support platform 41 before assembly.

[0029] Furthermore, a fixed block 7 is provided on the lower mold 4, and the fixed block 7 is located on the side of the slider 5 away from the support platform 41. A movable first pin 71 is provided on the fixed block 7, and the first pin 71 passes through the fixed block 7 and is fixedly connected to the slider 5. The moving direction of the first pin 71 is consistent with the moving direction of the slider 5 connected to the first pin 71.

[0030] From the above description, it can be seen that when the slider 5 moves toward the support platform 41, the first pin 71 moves synchronously with the slider 5. The cooperation between the first pin 71 and the fixed block 7 limits the moving direction of the slider 5 to avoid unexpected deviation when the slider 5 moves.

[0031] Furthermore, a first elastic member 72 is sleeved on the first pin 71 to drive the first pin 71 to move away from the support platform 41 , and one of the two opposite ends of the first elastic member 72 in the extension direction abuts against the fixing block 7 , and the other end abuts against the first pin 71 .

[0032] From the above description, it can be seen that as the slider 5 moves toward the support platform 41, the first pin 71 also moves accordingly, and the first elastic member 72 is compressed. When the display module is assembled and the upper mold 3 and the lower mold 4 are separated, the slider 5 is separated from the guide block 6. At this time, the first elastic member 72 restores its original length and drives the slider 5 to reset, making the display module pressing fixture more convenient to use.

[0033] Furthermore, a pressing block 8 movable in a vertical direction and a driving member 33 driving the pressing block 8 to move toward the direction close to the lower mold 4 are provided on a surface of the pressing plate 31 close to the lower mold 4 .

[0034] From the above description, it can be seen that after the upper mold 3 and the lower mold 4 are closed, the driving member 33 can be used to drive the pressing block 8 close to the bottom shell 2 to press the bottom shell 2 onto the unit plate 1, so as to seal the dimensional deviation of the unit plate 1 and the bottom shell 2 in the thickness direction, and ensure that the bottom shell 2 is pressed onto the unit plate 1 to maintain pressure.

[0035] Furthermore, the pressure plate 31 is also provided with a second pin 34 that passes through the pressure plate 31 and is fixedly connected to the pressure block 8. The second pin 34 can move in the vertical direction on the pressure plate 31, and the second pin 34 is sleeved with a second elastic member 35 that drives the pressure block 8 to move toward the pressure plate 31.

[0036] From the above description, it can be seen that when the pressing block 8 moves toward the lower mold 4, the second pin 34 moves synchronously with the pressing block 8, and the second elastic member 35 is compressed accordingly. When the pressure holding is completed, the pressing block 8 can be reset while the second elastic member 35 restores its original length.

[0037] Furthermore, the upper mold 3 also includes an annular plate 9 fixedly connected to the four guide blocks 6 respectively, and the annular plate 9 is located on the side of the pressure plate 31 away from the lower mold 4. The annular plate 9 and the four guide blocks 6 can move synchronously in the vertical direction and the pressure plate 31 is provided with an avoidance groove 36 for avoiding the guide blocks 6.

[0038] From the above description, it can be seen that by moving the annular plate 9 relative to the pressure plate 31 in the vertical direction, the four guide blocks 6 can be synchronously raised and lowered in the avoidance groove 36 to adjust the relative position of the guide block 6 and the pressure plate 31, ensuring that the slider 5 clamps the unit plate 1 and the bottom shell 2 under the drive of the guide block 6.

[0039] Furthermore, the annular plate 9 is also provided with a third pin 91 that passes through the annular plate 9 and is fixedly connected to the pressure plate 31. The third pin 91 can move in the vertical direction on the annular plate 9, and the third elastic member 92 is sleeved on the third pin 91 to drive the annular plate 9 to move away from the pressure plate 31.

[0040] From the above description, it can be seen that the third pin 91 moves synchronously with the movement of the annular plate 9, and the third elastic member 92 is compressed when the annular plate 9 is close to the pressure plate 31. After the display module is assembled, the annular plate 9 can be automatically reset under the drive of the third elastic member 92, which is convenient for the use of the display module pressing fixture.

[0041] Embodiment 1

[0042] Please refer to Figures 1 to 9Embodiment 1 of the present invention is: a display module pressing jig, which is used to position the unit board 1 and the bottom shell 2 during the assembly process of the unit board 1 and the bottom shell 2 of the display module, and to maintain pressure after the unit board 1 and the bottom shell 2 are bonded to ensure a firm connection between the unit board 1 and the bottom shell 2.

[0043] like Figures 1 to 3 As shown, the display module pressing jig includes a matching upper mold 3 and a lower mold 4. The unit board 1 and the bottom shell 2 are placed on the lower mold 4 in sequence and the unit board 1 and the bottom shell 2 are positioned by the lower mold 4. Glue is pre-applied between the unit board 1 and the bottom shell 2, and then the upper mold 3 is moved to close the upper mold 3 and the lower mold 4 to press the bottom shell 2 onto the unit board 1. After the bottom shell 2 and the unit board 1 are bonded together, the upper mold 3 is moved to open the mold and the assembled display module is taken out.

[0044] Please combine Figure 3 and 8 The lower mold 4 includes a rectangular support platform 41, the upper surface of the support platform 41 is used to carry the unit board 1 and the shape of the upper surface of the support platform 41 is consistent with the shape of the unit board 1, and the upper mold 3 is also provided with four movable sliders 5, the four sliders 5 are respectively arranged close to the four sides of the support platform 41 and the four sliders 5 are respectively parallel to the four sides of the support platform 41, any one of the sliders 5 can move in a direction perpendicular to one side of the support platform 41 close to the slider 5, so as to position the unit board 1 and the bottom shell 2 by respectively abutting against the four sides of the unit board 1 and the four sides of the bottom shell 2 through the four sliders 5, and the four sliders 5 move synchronously relative to the support platform 41 so that the four sides of the unit board 1 and the bottom shell 2 are simultaneously subjected to force and move, so as to ensure that the position of the bottom shell 2 on the unit board 1 is centered relative to the unit board 1 after positioning.

[0045] Specifically, an elastic pad 45 is provided on one side of the slider 5 close to the support platform 41. When the slider 5 clamps the unit plate 1 and the bottom shell 2, the elastic pad 45 is in direct contact with the unit plate 1 and the bottom shell 2 to prevent the slider 5 from crushing the unit plate 1 or the bottom shell 2. When the size of the unit plate 1 and the bottom shell 2 deviates, one of the unit plate 1 and the bottom shell 2 can be moved separately under the push of the slider 5 to ensure that the bottom shell 2 moves to the center position on the unit plate 1.

[0046] Please refer to Figure 3 and Fig. 9The upper mold 3 includes a pressing plate 31 for pressing the bottom shell 2 onto the unit board 1. The pressing plate 31 can move in the vertical direction relative to the lower mold 4, and four protruding guide blocks 6 are provided on a side of the pressing plate 31 close to the lower mold 4. In the process of the pressing plate 31 moving toward the lower mold 4, the four guide blocks 6 respectively abut against the four sliders 5 one by one, and as the pressing plate 31 gradually approaches the lower mold 4, the sliders 5 are driven by the guide blocks 6 to move toward the support platform 41 respectively, so that the four sliders 5 are driven by the guide blocks 6 to synchronously move toward the support platform 41 and clamp the unit board 1 and the bottom shell 2 placed on the support platform 41, and then the bottom shell 2 is centered on the unit board 1 through the synchronous action of the four sliders 5, even if the geometric center of the bottom shell 2 is located on the same vertical line as the geometric center of the unit board 1, so as to improve the position accuracy of the lamp beads on the obtained display module, and ensure that the LED display screen composed of multiple display modules has a good display effect.

[0047] like Figure 3 , Figure 8 and Fig. 9 As shown, in order to ensure stable cooperation between the upper mold 3 and the lower mold 4, a guide column 42 is provided on a side of the lower mold 4 close to the upper mold 3, and the axial direction of the guide column 42 is consistent with the vertical direction. A guide hole 32 cooperating with the guide column 42 is provided on the pressure plate 31, and the pressure plate 31 can be moved in the vertical direction relative to the lower mold 4 through the cooperation between the guide hole 32 and the guide column 42.

[0048] In this embodiment, the number of the guide columns 42 is four and the four guide columns 42 are respectively arranged near the four corners of the support platform 41, the pressure plate 31 is provided with four guide holes 32 and the guide blocks 6 are matched with the guide columns 42 one by one to avoid the pressure plate 31 from tilting when moving, resulting in the asynchronous movement of the four sliders 5.

[0049] Please combine Figure 4 and Figure 5 The guide block 6 has a first inclined surface 61 on one side close to the slider 5, and the slider 5 is provided with a second inclined surface 51 matching the first inclined surface 61. When the guide block 6 is in contact with the slider 5, the first inclined surface 61 contacts the second inclined surface 51, and as the guide block 6 approaches the lower mold 4, relative sliding occurs between the first inclined surface 61 and the second inclined surface 51, thereby driving the guide block 6 to move toward the direction close to the support platform 41, so that the guide block 6 can slide smoothly on the lower mold 4.

[0050] like Figure 3As shown in detail, the lower mold 4 is also provided with a guide rail 44 for guiding the movement of the slider 5, any one of the sliders 5 is arranged on two guide rails 44 arranged at intervals, and the two guide rails 44 cooperating with the same slider 5 are respectively arranged close to the opposite ends of the slider 5, and the length direction of the guide rail 44 is consistent with the moving direction of the slider 5 cooperating with the guide rail 44, so as to ensure that the slider 5 will not deflect during the movement, and ensure that the slider 5 as a whole moves stably under the drive of the guide block 6.

[0051] like Figure 8 As shown, in order to improve the positioning accuracy of the unit board 1 and the bottom shell 2 on the support platform 41, four right-angled limit blocks 43 are further provided on the lower mold 4, and the four limit blocks 43 are respectively arranged close to the four corners of the support platform 41, so that the four limit blocks 43 form an area for accommodating the unit board 1 and the bottom shell 2. Before assembly, the unit board 1 and the bottom shell 2 can be placed in the area in sequence, and a slider 5 is provided between any two adjacent limit blocks 43 to reduce the distance that the unit board 1 and the bottom shell 2 move under the push of the slider 5, thereby improving the efficiency of the display module pressing jig in positioning the unit board 1 and the bottom shell 2.

[0052] Please combine Figure 6 and Figure 7 A fixed block 7 is also provided on one side of each slider 5 away from the support platform 41, and a first pin 71 is provided on the fixed block 7, which passes through the fixed block 7 and is fixedly connected to the slider 5. The first pin 71 is movably arranged on the fixed block 7, and the moving direction of the first pin 71 is consistent with the moving direction of the slider 5 fixedly connected to the first pin 71, so as to ensure that the slider 5 moves along a preset direction.

[0053] Specifically, the first pin 71 is sleeved with a first elastic member 72 for driving the slider 5 to move in a direction away from the support platform 41. One of the two opposite ends of the first elastic member 72 in the telescopic direction abuts against the fixed block 7, and the other end abuts against the first pin 71. When the slider 5 moves toward the support platform 41 driven by the guide block 6, the first elastic member 72 is compressed with the synchronous action of the first pin 71 and the slider 5. After the display module is assembled and the guide block 6 is separated from the slider 5, the first elastic member 72 restores its original length and drives the first pin 71 to drive the slider 5 to move in a direction away from the support platform 41, so that the slider 5 automatically resets after the display module pressing jig is opened, which is convenient for assembling the next display module.

[0054] like Figure 2 and Figure 3As shown, the working process of the display module pressing fixture provided in this embodiment is: obtain the unit board 1 and the bottom shell 2, place the unit board 1 and the bottom shell 2 on the support platform 41 in sequence and pre-glue between the unit board 1 and the bottom shell 2, at this time, the unit board 1 and the bottom shell 2 are both located in the area surrounded by the four limit blocks 43, move the pressing plate 31 to make the guide column 42 extend into the guide hole 32, and then press the pressing plate 31 down along the length direction of the guide column 42 until the pressing plate 31 and the bottom shell 2 are abutted, and in the process of pressing the pressing plate 31, the guide blocks 6 and the sliders 5 are abutted one by one and The four sliders 5 are driven to move along the guide rails 44 respectively to position the bottom shell 2 at a central position on the unit board 1, and the pressing plate 31 presses the bottom shell 2 onto the unit board 1 until the unit board 1 and the bottom shell 2 are firmly bonded to obtain a display module. After the display module is assembled, the pressing plate 31 moves along the guide column 42 in a direction away from the lower mold 4 to remove the assembled display module from the lower mold 4. At this time, the slider 5 is automatically reset under the drive of the first elastic member 72, and other unit boards 1 and bottom shells 2 to be assembled are placed on the support table 41 and the above actions are repeated to carry out batch assembly of display modules.

[0055] Embodiment 2

[0056] Please refer to Fig.10 The second embodiment of the present invention is another technical solution for the structure of the upper mold 3 based on the first embodiment, and the difference from the first embodiment is only that the structure of the upper mold 3 is different.

[0057] like Fig.10 As shown, in this embodiment, a pressing block 8 movable in the vertical direction is provided on one side of the pressing plate 31 close to the lower mold 4, and a driving member 33 for driving the pressing block 8 to move in the direction close to the lower mold 4 is also provided on the pressing plate 31, and a side of the pressing block 8 close to the lower mold 4 has a contour surface 81 that fits the bottom shell 2. After the upper mold 3 and the lower mold 4 are closed, the pressing block 8 is driven by the driving member 33 to approach the bottom shell 2 to ensure that the bottom shell 2 is pressed tightly on the unit board 1, so as to prevent the gap between the pressing plate 31 and the bottom shell 2 after the display module pressing jig is molded due to the error in the thickness of the bottom shell 2 or the unit board 1, resulting in poor bonding between the bottom shell 2 and the unit board 1.

[0058] Optionally, the driving member 33 is a screw, and the pressing plate 31 is provided with a threaded hole matching the screw, and one end of the screw is abutted against the pressing block 8, so that the pressing block 8 can be driven to move toward the lower mold 4 by rotating the screw, thereby facilitating the operation of the display module pressing fixture.

[0059] Specifically, the pressing plate 31 is further provided with a second pin 34 that penetrates the pressing plate 31 and is fixedly connected to the pressing block 8. The second pin 34 can move in the vertical direction on the pressing plate 31, and a second elastic member 35 is sleeved on the second pin 34 to drive the pressing block 8 to move in the direction close to the pressing plate 31. One end of the two opposite ends of the second elastic member 35 in the telescopic direction abuts against the pressing plate 31, and the other end abuts against the second pin 34. When the pressing block 8 moves in the direction close to the lower mold 4 under the drive of the driving member 33, the second pin 34 moves synchronously with the pressing block 8 and the second elastic member 35 is compressed as the second pin 34 moves. After the display module is assembled, the driving member 33 moves away from the pressing block 8. At this time, the second elastic member 35 restores its original length and drives the pressing block 8 to move in the direction close to the pressing plate 31, so that the pressing block 8 is automatically reset, which is convenient for adjusting the position of the pressing block 8 in the assembly process of the next display module to ensure that the pressing block 8 abuts against the bottom shell 2.

[0060] Please refer to Fig.10 The difference between the working process of the display module pressing jig provided in this embodiment and the working process of the display module pressing jig provided in Example 1 is that: after the mold is closed, the display module pressing jig provided in this embodiment needs to adjust the driving member 33 so that the driving member 33 drives the pressing block 8 to abut against the bottom shell 2, and after the display module pressing jig is opened, the driving member 33 is adjusted according to the actual situation to make the pressing block 8 close to the pressing plate 31. The other action processes are consistent with the display module pressing jig provided in Example 1.

[0061] Embodiment 3

[0062] Please refer to Fig.11 Embodiment 3 of the present invention is another technical solution for the structure of the upper mold 3 based on Embodiment 1, and the difference from Embodiment 1 is only that the structure of the upper mold 3 is different.

[0063] like Fig.11As shown, in this embodiment, the upper mold 3 also includes an annular plate 9 respectively fixedly connected to the four guide blocks 6, the annular plate 9 is located on the side of the pressure plate 31 away from the lower mold 4, and the pressure plate 31 is provided with a avoidance groove 36 for avoiding the guide block 6 so that the guide block 6 can move relative to the pressure plate 31. After the upper mold 3 and the lower mold 4 are closed, the annular plate 9 can be pressed to make the annular plate 9 and the four guide blocks 6 move synchronously in the vertical direction, and then the guide blocks 6 drive the slider 5 to approach and clamp the unit board 1 and the bottom shell 2, so as to avoid the geometric center of the unit board 1 and the geometric center of the bottom shell 2 not being on the same plane due to the deviation of the thickness of the unit board 1 or the bottom shell 2, which causes the slider 5 to fail to clamp the unit board 1 or the bottom shell 2 after the pressure plate 31 and the bottom shell 2 are abutted, thereby improving the assembly accuracy of the display module.

[0064] Preferably, the annular plate 9 is sleeved on the guide column 42 to ensure that the annular plate 9 drives the guide block 6 to move in the vertical direction, so that the four sliders 5 move synchronously under the drive of the guide block 6 and position the bottom shell 2 in the center of the unit plate 1.

[0065] In detail, the annular plate 9 is also provided with a third pin 91 that penetrates the annular plate 9 and is fixedly connected to the pressing plate 31. The third pin 91 can move in the vertical direction on the annular plate 9, and the third elastic member 92 that drives the annular plate 9 to move in the direction away from the pressing plate 31 is sleeved on the third pin 91. One of the two opposite ends of the third elastic member 92 in the telescopic direction abuts against the annular plate 9, and the other end abuts against the pressing plate 31. When the annular plate 9 is pressed to move the annular plate 9 in the direction close to the pressing plate 31, the third elastic member 92 is compressed as the annular plate 9 moves. After the display module is assembled, the annular plate 9 is released. At this time, the third elastic member 92 restores its original length and drives the annular plate 9 to move in the direction away from the pressing plate 31, so that the annular plate 9 and the guide block 6 are automatically reset, which is convenient for adjusting the position of the guide block 6 during the assembly process of the next display module to ensure that the slider 5 clamps the unit board 1 and the bottom shell 2.

[0066] Please refer to Fig.11 The difference between the working process of the display module pressing jig provided in this embodiment and the working process of the display module pressing jig provided in Example 1 is that: when closing the mold, the display module pressing jig provided in this embodiment first presses the annular plate 9 to drive the slider 5 to clamp the unit board 1 and the bottom shell 2, and then presses the pressing plate 31 to make the pressing plate 31 and the bottom shell 2 abut and maintain pressure. After the pressure maintenance is completed, the pressing plate 31 and the annular plate 9 can be released. The other action processes are consistent with the display module pressing jig provided in Example 1.

[0067] To summarize, the display module pressing jig provided by the present invention adopts matching upper and lower dies to position the unit board and the bottom shell in the display module, and maintains pressure during the bonding process of the unit board and the bottom shell, wherein the lower die is provided with a support platform for holding the unit board and the bottom shell and movable sliders are arranged around the support platform, and the upper die is provided with driving blocks corresponding to the sliders one by one, and when the upper die and the lower die are closed, the sliders are driven by the driving blocks and move simultaneously toward the direction close to the support platform, and then the slider clamps the unit board and the bottom shell and positions the bottom shell in the center of the unit board, that is, the geometric center of the unit board and the geometric center of the bottom shell are located on the same vertical line, so as to improve the alignment accuracy of the bottom shell and the unit board, avoid the position of the lamp beads on the assembled display module from being offset, and ensure that the LED display screen assembled by the display module has a good display effect.

[0068] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A display module pressing jig, comprising a matching upper die and a lower die, characterized in that: A rectangular support platform is provided on the lower mold, and four sliders movable in the horizontal direction are also provided on the lower mold, the four sliders are respectively arranged close to the four sides of the support platform and the four sliders are respectively parallel to the four sides of the support platform, and an elastic pad is provided on a side of the slider close to the support platform, and when the slider clamps the unit plate and the bottom shell, the elastic pad is in direct contact with the unit plate and the bottom shell to prevent the slider from crushing the unit plate or the bottom shell, and when the size of the unit plate and the bottom shell deviates, one of the unit plate and the bottom shell can be moved separately under the push of the slider to ensure that the bottom shell moves to a central position on the unit plate; Any one of the sliders can move in a direction perpendicular to a side of the support platform to which the slider is close, and the upper mold includes a pressing plate that can be raised and lowered in a vertical direction, and a side of the pressing plate close to the lower mold is provided with four protruding guide blocks, and the four guide blocks respectively correspond to the four sliders one by one and drive the sliders close to the support platform; The guide block has a first inclined surface, and the slider is provided with a second inclined surface matching the first inclined surface; The lower mold is also provided with a guide rail for guiding the movement of the slider. Any one of the sliders is arranged on two guide rails arranged at intervals, and the two guide rails cooperating with the same slider are respectively arranged near the opposite ends of the slider, and the length direction of the guide rail is consistent with the moving direction of the slider cooperating with the guide rail.

2. The display module pressing jig according to claim 1, characterized in that: The lower die is also provided with a guide column, the axial direction of the guide column is consistent with the vertical direction, and the upper die is provided with a guide hole matched with the guide column.

3. The display module pressing jig according to claim 1, characterized in that: The lower die is also provided with four limit blocks, which are in a right-angle shape and respectively abut against the four corners of the support platform, and a sliding block is provided between any two adjacent limit blocks.

4. The display module pressing jig according to claim 1, characterized in that: A fixed block is also provided on the lower mold, and the fixed block is located on the side of the slider away from the support platform. A movable first pin is provided on the fixed block, and the first pin passes through the fixed block and is fixedly connected to the slider. The moving direction of the first pin is consistent with the moving direction of the slider connected to the first pin.

5. The display module pressing jig according to claim 4, characterized in that: The first pin is sleeved with a first elastic member driving the first pin to move in a direction away from the support platform. One of the two opposite ends of the first elastic member in the expansion and contraction direction abuts against the fixing block, and the other end abuts against the first pin.

6. The display module pressing jig according to claim 1, characterized in that: A pressing block which can move in a vertical direction and a driving member which drives the pressing block to move toward the direction close to the lower mold are arranged on a side of the pressing plate close to the lower mold.

7. The display module pressing jig according to claim 6, characterized in that: The pressing plate is also provided with a second pin which passes through the pressing plate and is fixedly connected to the pressing block. The second pin can move in a vertical direction on the pressing plate, and a second elastic member is sleeved on the second pin to drive the pressing block to move toward the pressing plate.

8. The display module pressing jig according to claim 1, characterized in that: The upper mold also includes an annular plate fixedly connected to the four guide blocks respectively, the annular plate is located on the side of the pressure plate away from the lower mold, the annular plate and the four guide blocks can move synchronously in the vertical direction and the pressure plate is provided with an avoidance groove for avoiding the guide blocks.

9. The display module pressing jig according to claim 8, characterized in that: The annular plate is also provided with a third pin that penetrates the annular plate and is fixedly connected to the pressure plate. The third pin can move in the vertical direction on the annular plate, and a third elastic member is sleeved on the third pin to drive the annular plate to move away from the pressure plate.

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