Backlight material cutting device in matrix type liquid crystal module

Abstract

The utility model discloses a backlight material cutting device in a matrix type liquid crystal module, and particularly relates to the technical field of backlight materials of liquid crystal modules, the backlight material cutting device comprises a cutting table and a pressing table movably arranged on the cutting table along the vertical direction, a supporting table is fixedly arranged on the cutting table, and cutting knives are symmetrically and fixedly arranged at the bottom of the pressing table. A flattening assembly arranged at the bottom of the pressing table comprises a first sliding seat, a positioning plate is arranged on the first sliding seat in a sliding mode, and a first spring is fixedly installed between the positioning plate and the first sliding seat. According to the cutting device, the light guide plate is placed on the supporting table, in the process that the pressing table moves downwards, the positioning plate firstly makes contact with the light guide plate to abut against and fix the light guide plate, and then the pressing table continues to move downwards, so that the first end of the flattening plate slides on the light guide plate on the top of the supporting table to conduct flattening operation. And meanwhile, the flattening plate is matched with the positioning plate to press and fix the light guide plate, so that the stability of the light guide plate during subsequent cutting of the cutter is improved, and deformation of the light guide plate during cutting is reduced.

Description

Technical Field

[0001] This utility model relates to the field of backlight material technology for liquid crystal modules, and more specifically to a backlight material cutting device for matrix liquid crystal modules. Background Technology

[0002] The backlight material of an LCD module typically consists of several main components to ensure the brightness and uniformity of the display. These include light-emitting diodes (LEDs), optical films, diffusion films, reflective films, and light guide plates.

[0003] According to patent publication number CN211362405U, published on August 28, 2020, an automatic positioning edge trimming machine for light guide plates is disclosed, including a worktable and an edge trimmer. A fixed frame is fixedly connected to the upper surface of the worktable, and a fixed column is fixedly connected to the inside of the worktable. A processing table is fixedly connected to the top of the fixed column by bolts. A fixed box is fixedly connected to the lower surface of the top of the fixed frame. A first motor housing is fixedly connected to the side of the fixed box. A first hydraulic cylinder is fixedly connected to the middle part of the lower surface of the top of the fixed frame. A pressure plate is fixedly connected to the bottom end of the first hydraulic cylinder by bolts. Infrared receivers are fixedly connected to the edges of the upper surface of the pressure plate. A second hydraulic cylinder is slidably connected to the lower surface of the fixed box. A second motor housing is fixedly connected to the bottom end of the second hydraulic cylinder. A hydraulic rod is rotatably connected to the lower surface of the second motor housing. An edge trimmer is fixedly connected to the moving end of the hydraulic rod. An infrared emitter is fixedly connected to the side of the edge trimmer facing the first hydraulic cylinder.

[0004] In the prior art, including the aforementioned patents, the current method for cutting the light guide plate of the backlight material in an LCD module involves using a hydraulic cylinder to drive a cutting tool downwards to cut the light guide plate. This cutting method can effectively cut the light guide plate to the required size. Currently, most common light guide plates are made of PMMA, often referred to as acrylic sheets. As the light guide plate for a matrix LCD module, its thickness is only a few millimeters. Due to its thinness, it will deform to some extent during the cutting process due to the pressure of the cutting tool, which will result in unevenness on some sides of the light guide plate after cutting, thus affecting the production quality of the light guide plate. Utility Model Content

[0005] The purpose of this invention is to provide a backlight material cutting device for a matrix liquid crystal module to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a backlight material cutting device for a matrix liquid crystal module, comprising a cutting table and a pressing table movably disposed thereon along the vertical direction, a support platform fixedly mounted on the cutting table, cutting blades symmetrically fixedly mounted on the bottom of the pressing table, and a flattening component disposed at the bottom of the pressing table including:

[0007] A first slide block has a positioning plate slidably mounted on it, and a first spring is fixedly installed between the positioning plate and the first slide block;

[0008] The grinding plate is symmetrically hinged on the outer walls of opposite sides of the first slide, and the first end of the grinding plate is movably mounted on the light guide plate placed on the top of the support.

[0009] Preferably, the outer walls of the first slide are symmetrically provided with hinge grooves on both sides, the second end of the grinding plate is hinged in the hinge groove, a torsion spring is sleeved on the hinge shaft of the grinding plate, and the grinding plate is in default state attached to the inner wall of the hinge groove to keep it tilted downward.

[0010] Preferably, the top of the cutting table is fixedly mounted with multiple guide rods, and the top of the guide rods is fixedly mounted with a mounting plate. The mounting plate is fixedly mounted with a mounting bracket, and the mounting bracket is fixedly mounted with a hydraulic cylinder. The pressure table is fixedly mounted on the output end of the hydraulic cylinder and slides on the multiple guide rods.

[0011] Preferably, the top of the support platform is symmetrically provided with knife grooves, and the cutting knife is fixedly installed on the mounting platform provided at the bottom of the pressure platform.

[0012] Preferably, a second slide is symmetrically fixedly installed on the bottom of the pressure table, and an anti-tilting plate is slidably arranged inside the second slide.

[0013] Preferably, the bottom ends of the anti-tilting plate and the positioning plate are respectively fixedly installed with a first rubber pad and a second rubber pad.

[0014] Preferably, a grinding wheel is rotatably mounted on the first end of the grinding plate.

[0015] Preferably, the top of the support platform is symmetrically provided with a vertical platform, and the outer wall of the adjacent side of the vertical platform is symmetrically provided with inclined air holes.

[0016] Preferably, the top of the platform is provided with a piston chamber that communicates with the inclined air hole, and the piston blocks that are symmetrically fixedly installed at the bottom of the pressure platform are slidably disposed in the piston chamber.

[0017] Preferably, a valve groove is provided between the piston chamber and the inclined air hole, and a switch spring is provided between the switch block and the support plate that are slidably disposed in the valve groove. The irregular rod fixedly installed on the switch block is located on the path of the piston block movement.

[0018] In the above technical solution, the backlight material cutting device in the matrix liquid crystal module provided by this utility model has the following beneficial effects: the light guide plate is placed on the top of the support platform, and then during the process of the pressure table moving down, the positioning plate first contacts the light guide plate for pressing and fixing, and then as the pressure table continues to move down, the first end of the grinding plate slides on the light guide plate on the top of the support platform for flattening. At the same time, the grinding plate cooperates with the positioning plate to press and fix the light guide plate, so as to improve the stability of the light guide plate during subsequent cutting by the cutting blade and reduce the deformation of the light guide plate during cutting. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of the cutting table provided in an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the cutting table provided in an embodiment of the present utility model;

[0022] Figure 3 This is a schematic cross-sectional view of the cutting table portion provided in an embodiment of the present utility model;

[0023] Figure 4 This is an enlarged structural diagram of point A provided in an embodiment of the present utility model;

[0024] Figure 5 This is an enlarged structural diagram of section B provided in an embodiment of the present utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Cutting table; 2. Hydraulic cylinder; 3. Support table; 4. Cutting blade; 5. Positioning plate; 6. Light guide plate; 7. Switch block; 11. Guide rod; 12. Mounting plate; 13. Mounting bracket; 21. Pressing table; 22. First slide; 23. Mounting table; 24. Second slide; 25. Hinge groove; 26. Piston block; 31. Knife groove; 32. Stand; 33. Inclined air hole; 34. Valve groove; 35. Piston chamber; 41. Anti-tilting plate; 42. First rubber pad; 51. Second rubber pad; 52. Rolling plate; 53. Rolling wheel; 54. Torsion spring; 55. First spring; 71. Switch spring; 72. Irregular rod. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0028] like Figure 1-5 As shown, a backlight material cutting device for a matrix LCD module includes a cutting table 1 and a pressing table 21 movably arranged on the cutting table 1 along the vertical direction. A support table 3 is fixedly installed on the cutting table 1, and cutting blades 4 are symmetrically fixedly installed on the bottom of the pressing table 21. A flattening component is provided at the bottom of the pressing table 21, including:

[0029] A first slide block 22 has a positioning plate 5 slidably mounted on it, and a first spring 55 is fixedly installed between the positioning plate 5 and the first slide block 22.

[0030] The grinding plate 52 is symmetrically hinged to the outer walls of opposite sides of the first slide block 22, and the first end of the grinding plate 52 is movably mounted on the light guide plate 6 placed on the top of the support platform 3. The light guide plate 6 is placed on the top of the support platform 3, and then, as the pressure table 21 moves downward, the positioning plate 5 first contacts the light guide plate 6 for pressing and fixing. Then, as the pressure table 21 continues to move downward, the first end of the grinding plate 52 slides onto the light guide plate 6 on the top of the support platform 3 for flattening. Simultaneously, the grinding plate 52, in conjunction with the positioning plate 5, presses and fixes the light guide plate 6 downward, thereby improving the stability of the light guide plate 6 during subsequent cutting by the cutting blade 4 and reducing deformation of the light guide plate 6 during cutting.

[0031] As a further technical solution provided by this utility model, the outer walls of the first slide block 22 are symmetrically provided with hinge grooves 25 on both sides, the second end of the rolling plate 52 is hinged in the hinge groove 25, a torsion spring 54 is sleeved on the hinge shaft of the rolling plate 52, and the rolling plate 52 is attached to the inner wall of the hinge groove 25 in the default state to keep it tilted downward.

[0032] Specifically, the two ends of the torsion spring 54 are fixedly installed on the inner wall of the grinding plate 52 and the hinge groove 25. The torsion spring 54 is used to make the grinding plate 52 fit against the inner wall of the hinge groove 25 and keep it tilted downward, so that when the pressure table 21 moves down, the grinding plate 52 can slide along the surface of the light guide plate 6.

[0033] Furthermore, multiple guide rods 11 are fixedly installed on the top of the cutting table 1, and a mounting plate 12 is fixedly installed on the top of the guide rods 11. A mounting bracket 13 is fixedly installed on the mounting plate 12, and a hydraulic cylinder 2 is fixedly installed on the mounting bracket 13. The pressure table 21 is fixedly installed on the output end of the hydraulic cylinder 2 and slides on the multiple guide rods 11.

[0034] Specifically, the hydraulic cylinder 2 pushes the pressure table 21 to make the pressure table 21 slide along multiple guide rods 11, thereby making the pressure table 21 move down stably and driving the cutting blade 4 and the positioning plate 5 to move down synchronously.

[0035] Furthermore, the top of the support platform 3 is symmetrically provided with knife grooves 31, and the cutting knife 4 is fixedly installed on the mounting platform 23 provided at the bottom of the pressure platform 21.

[0036] Specifically, when the cutting blade 4 moves down to cut, it moves within the blade groove 31 so that the cutting blade 4 can cut the light guide plate 6.

[0037] Furthermore, a second slide block 24 is symmetrically fixedly installed at the bottom of the pressure table 21, and an anti-tilting plate 41 is slidably arranged inside the second slide block 24.

[0038] Specifically, such as Figure 4 As shown, when the pressure table 21 moves down, the positioning plate 5 first contacts the light guide plate 6 to initially fix the light guide plate 6. Then, the first end of the grinding plate 52 slides along the light guide plate 6 to flatten it. Subsequently, the pressure table 21 continues to move down so that the anti-warping plate 41 presses down on the light guide plate 6 and is located on one side of the cutting groove 31, thereby pressing down and fixing the light guide plate 6 near the cutting groove 31 to reduce the problem of deformation of the light guide plate 6 during cutting.

[0039] Furthermore, the bottom ends of the anti-tilting plate 41 and the positioning plate 5 are respectively fixedly installed with a first rubber pad 42 and a second rubber pad 51.

[0040] Specifically, the first rubber pad 42 and the second rubber pad 51 can reduce the pressure or scratches on the light guide plate 6 caused by the anti-tilting plate 41 and the positioning plate 5.

[0041] Furthermore, a grinding wheel 53 is rotatably mounted on the first end of the grinding plate 52.

[0042] Specifically, the grinding wheel 53 can prevent the first end of the grinding plate 52 from scratching the surface of the light guide plate 6.

[0043] Furthermore, a vertical platform 32 is symmetrically arranged on the top of the support platform 3, and inclined air holes 33 are symmetrically opened on the outer wall of the adjacent side of the vertical platform 32.

[0044] Specifically, air is blown towards the top surface of the light guide plate 6 through the inclined air holes 33, thereby removing dust or impurities from the top of the light guide plate 6, or fine impurity particles generated after the sides of the light guide plate 6 are cut.

[0045] Furthermore, the top of the platform 32 is provided with a piston chamber 35 that communicates with the inclined air hole 33, and the piston blocks 26 symmetrically fixedly installed at the bottom of the pressure platform 21 are slidably disposed in the piston chamber 35.

[0046] Specifically, when the pressure table 21 moves down, the piston block 26 slides in the piston chamber 35 to make piston movement, thereby discharging the air in the piston chamber 35 along the inclined air hole 33 to form a blower cleaning.

[0047] Furthermore, a valve groove 34 is provided between the piston chamber 35 and the inclined air hole 33. A switch spring 71 is provided between the switch block 7 and the support 3, which are slidably disposed in the valve groove 34. The irregular rod 72 fixedly installed on the switch block 7 is located on the path of the piston block 26.

[0048] Specifically, the two ends of the switch spring 71 are fixedly installed on the switch block 7 and the support 3. In the default state, the switch spring 71 pulls the switch block 7 to close the valve groove 34. When the piston block 26 slides in the piston chamber 35, the pressure in the piston chamber 35 increases because the valve groove 34 is closed. Then, after the pressure table 21 moves down and the cutting blade 4 completes the cutting, the piston block 26 pushes the shaped rod 72 to drive the switch block 7 to slide open the valve groove 34. At this time, the compressed gas in the piston chamber 35 is quickly blown along the inclined air hole 33 to the top surface of the light guide plate 6 to remove the impurities generated during cutting.

[0049] Working principle: The light guide plate 6 is placed on the support platform 3. Then, the hydraulic cylinder 2 pushes the pressure table 21 down. Further, the positioning plate 5 first contacts the light guide plate 6 to initially fix it. Then, the grinding wheel 53 at the first end of the grinding plate 52 slides along the light guide plate 6 to flatten it. Then, the pressure table 21 continues to move down so that the anti-tilting plate 41 presses down on the light guide plate 6 and is located on one side of the cutter groove 31, thereby pressing down and fixing the light guide plate 6 near the cutter groove 31 to reduce the deformation of the light guide plate 6 during cutting. At the same time, when the piston block 26 slides in the piston cavity 35, the pressure in the piston cavity 35 increases because the valve groove 34 is closed. Then, after the pressure table 21 moves down and the cutting blade 4 completes the cutting, the piston block 26 pushes the shaped rod 72 to drive the switch block 7 to slide open the valve groove 34. At this time, the compressed gas in the piston cavity 35 quickly blows along the inclined air hole 33 to the top surface of the light guide plate 6 to remove the impurities generated during cutting.

[0050] The above description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A cutting device for backlight material in a matrix liquid crystal module, characterized in that, The utility model relates to a cutting device, including cutting table (1) and the pressure table (21) of vertical direction movable setting on it, fixed mounting has the support table (3) on cutting table (1), the bottom of pressure table (21) is fixedly installed with cutting knife (4) symmetry, the bottom of pressure table (21) is provided with flatten subassembly, The first slide (22) is provided with a positioning plate (5) on the first slide (22), and a first spring (55) is fixedly installed between the positioning plate (5) and the first slide (22); The bottom of the pressure table (21) is provided with a flatten plate (52) which is symmetrically hinged to the outer walls on the opposite sides of the first slide (22), and the first end of the flatten plate (52) is movably arranged on the light guide plate (6) placed on the top of the support table (3).

2. The cutting device for backlight material in a matrix liquid crystal module according to claim 1, characterized in that, The outer walls on the opposite sides of the first slide (22) are symmetrically provided with hinge grooves (25), the second end of the flatten plate (52) is hingedly arranged in the hinge grooves (25), a torsional spring (54) is sleeved on the hinge shaft of the flatten plate (52), and by default, the flatten plate (52) is attached to the inner wall of the hinge groove (25) to keep inclined downward.

3. The cutting device for backlight material in a matrix liquid crystal module according to claim 1, characterized in that, The top of the cutting table (1) is fixedly provided with a plurality of guide rods (11), the top of the guide rod (11) is fixedly provided with a mounting plate (12), the mounting plate (12) is fixedly provided with a mounting frame (13), the mounting frame (13) is fixedly provided with a hydraulic cylinder (2), and the pressure table (21) is fixedly installed on the output end of the hydraulic cylinder (2) and slides on the plurality of guide rods (11).

4. The cutting device for backlight material in a matrix liquid crystal module according to claim 1, characterized in that, The top of the support table (3) is symmetrically provided with a knife groove (31), and the cutting knife (4) is fixedly installed on the mounting table (23) arranged on the bottom of the pressure table (21).

5. The cutting device for backlight material in a matrix liquid crystal module according to claim 1, characterized in that, The bottom of the pressure table (21) is fixedly provided with a second slide (24), and the second slide (24) is slidably provided with an anti-warping plate (41).

6. The cutting device for backlight material in a matrix liquid crystal module according to claim 5, characterized in that, The bottom end of the anti-warping plate (41) and the positioning plate (5) is fixedly provided with a first rubber pad (42) and a second rubber pad (51), respectively.

7. The cutting device for backlight material in a matrix liquid crystal module according to claim 1, characterized in that, The first end of the flatten plate (52) is rotatably provided with a grinding wheel (53).

8. The cutting device for backlight material in a matrix liquid crystal module according to claim 1, characterized in that, The top of the support table (3) is symmetrically provided with a stand (32), and the outer wall on the adjacent side of the stand (32) is symmetrically provided with an inclined air hole (33).

9. The cutting device for backlight material in a matrix liquid crystal module according to claim 8, characterized in that, The top of the stand (32) is provided with a piston cavity (35) which is communicated with the inclined air hole (33), and the piston block (26) fixedly installed on the bottom of the pressure table (21) is slidably arranged in the piston cavity (35).

10. The cutting device for backlight material in a matrix liquid crystal module according to claim 9, wherein, The valve groove (34) is arranged between the piston cavity (35) and the inclined air hole (33), the switch spring (71) is arranged between the switch block (7) slidably arranged in the valve groove (34) and the support table (3), and the special-shaped rod (72) fixedly installed on the switch block (7) is located on the path of the movement of the piston block (26).

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