Liquid crystal display screen processing jig

Abstract

The utility model discloses a liquid crystal display screen machining jig, and belongs to the technical field of machining jigs. A liquid crystal display screen machining jig comprises a base table, a plurality of adsorption areas are arranged on the base table, a plurality of adsorption holes are formed in the adsorption areas at equal intervals, matched negative pressure cavities are formed in the positions, corresponding to the adsorption areas, in the base table, a plurality of connecting pipes are fixedly installed on the side edge of the base table, and the connecting pipes communicate with the negative pressure cavities. A sealing part is arranged at the edge of the adsorption area, when the display screen is placed on the base table, a sealed space is formed by the adsorption area and the surface of the display screen, and clamping force parallel to the plane of the display screen is applied to the base table through clamping parts arranged at the four corners of the base table; according to the utility model, the independent adsorption areas are formed by combining the adsorption holes, so that the liquid crystal display screens with different sizes are arranged above the base station, and the corresponding adsorption areas are opened according to the size requirements, thereby avoiding the situation that the small-size display screens are arranged on the base station to cause air leakage, and adapting to the display screens with different sizes.

Description

Technical Field

[0001] This utility model relates to the field of processing fixture technology, and in particular to a liquid crystal display screen processing fixture. Background Technology

[0002] Liquid crystal displays (LCDs) are a type of flat panel technology that uses the photoelectric properties of liquid crystal materials to display images. Its core principle is to control the alignment of liquid crystal molecules through an electric field, thereby changing the light transmittance, and forming an image in conjunction with a backlight and color filters.

[0003] The processing of LCD screens involves positioning, bonding, inspection, cutting, FPC bonding, and cleaning. Each processing step requires a corresponding fixture. The positioning fixture typically consists of a clamping component and a base. The clamping component secures the LCD screen to the base of the fixture to complete the positioning operation.

[0004] Existing LCD screen positioning fixtures mostly use mechanical clamping or a single adsorption structure to place the LCD screen on top of the positioning fixture. This can easily cause the glass substrate to crack at the edge due to uneven pressure during the clamping process. When using an adsorption structure to position the screen, the fixed distribution of the adsorption holes makes it difficult to adapt to substrates of different sizes. Small-sized substrates are prone to air leakage during adsorption, resulting in insufficient adsorption force. Therefore, the adaptability of the screen to different sizes is poor. Utility Model Content

[0005] The purpose of this invention is to solve the problems of uneven clamping pressure of clamping components leading to edge breakage of glass substrates and poor adaptability in the prior art, and to propose a liquid crystal display processing fixture.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A liquid crystal display screen processing fixture includes a base with multiple adsorption zones. Each adsorption zone has multiple adsorption holes arranged at equal intervals. A corresponding negative pressure chamber is formed inside the base for each adsorption zone. Multiple connecting pipes are fixedly installed on the side of the base and are connected to the negative pressure chambers. A sealing element is provided at the edge of each adsorption zone. When the display screen is placed on the base, the adsorption zone and the surface of the display screen form a sealed space. Clamping elements set at the four corners of the base apply a clamping force parallel to the plane of the display screen on the base.

[0008] To improve the sealing performance of the positioning fixture during operation, preferably, the sealing element includes a sealing gasket movably mounted on the base, wherein the base has an installation groove, a spring is installed in the installation groove, and the two ends of the spring abut against the base and the sealing gasket respectively.

[0009] To prevent scratches on the LCD screen surface, the sealing gasket is made of silicone, and its deformation is less than 80%.

[0010] To further improve the positioning effect, preferably, the clamping component includes: a clamping block, a guide rod fixedly connected to the clamping block, an adjustment groove on the guide rod, and a positioning post fixedly installed on the base. The positioning post is threadedly connected to a knob, which can abut against the guide rod when the knob is rotated. The positioning post passes through the adjustment groove.

[0011] To further protect the LCD screen, the clamping block is L-shaped, and a rubber pad is attached along the L-shaped structure.

[0012] To enable the adsorption zone to operate independently, preferably, a valve is provided inside the connecting pipe for selectively closing the corresponding negative pressure chamber.

[0013] Compared with the prior art, the present invention provides a liquid crystal display screen processing fixture, which has the following beneficial effects:

[0014] 1. This LCD screen processing fixture consists of multiple adsorption zones formed by adsorption holes set above the base. Through connecting pipes and rotary valves, each adsorption zone can work independently. On the one hand, it can make the corresponding adsorption zone work according to the needs to adapt to different screen sizes. On the other hand, by dividing the edge area and the center area to work, the fixture can save more energy.

[0015] 2. This LCD screen processing fixture, through the guide rod and clamping block set in the clamping component, can further clamp the LCD screen, realizing dual positioning of negative pressure adsorption and mechanical clamping, thereby making the LCD screen more stable after being placed on the base.

[0016] The parts not mentioned in this device are the same as or can be implemented using existing technologies. This utility model uses adsorption holes to form independent adsorption areas, allowing LCD screens of different sizes to be placed above the base. The corresponding adsorption area is opened according to the size requirements, thereby avoiding air leakage when small-sized screens are placed on the base, thus adapting to screens of different sizes. Attached Figure Description

[0017] Figure 1 This is an isometric structural diagram of a liquid crystal display processing fixture proposed in this utility model;

[0018] Figure 2 This is a partial structural schematic diagram of a liquid crystal display processing fixture proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the negative pressure cavity structure of a liquid crystal display processing fixture proposed in this utility model;

[0020] Figure 4 This utility model proposes a liquid crystal display screen processing fixture. Figure 1 Enlarged structural diagram at point A in the middle;

[0021] Figure 5 This utility model proposes a liquid crystal display screen processing fixture. Figure 2 Enlarged structural diagram at point B.

[0022] In the diagram: 1. Base; 2. Adsorption hole; 3. Negative pressure chamber; 4. Connecting pipe; 5. Mounting groove; 6. Spring; 7. Sealing gasket; 8. Positioning post; 9. Knob; 10. Guide rod; 11. Clamping block. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Example:

[0026] Reference Figures 1-5 A liquid crystal display processing fixture includes a base 1 with multiple adsorption areas, ranging from 6 to 12, preferably 9 in this application. The adsorption areas are divided into a central area and an edge area to accommodate displays of different sizes. Multiple adsorption holes 2 are evenly arranged on each adsorption area, with a diameter of 0.5 mm. The evenly arranged adsorption holes 2 ensure more uniform negative pressure suction. A corresponding negative pressure chamber 3 is provided within the base 1 for each adsorption area. Multiple connecting pipes 4 are fixedly installed on the side of the base 1 and are connected to the negative pressure chambers 3. Valves are installed within the connecting pipes 4 for selectively closing the corresponding negative pressure chambers 3. Sealing elements are provided at the edges of the adsorption areas. When the display is placed on the base 1, a sealed space is formed between the adsorption area and the display surface. Clamping elements located at the four corners of the base 1 apply a clamping force parallel to the plane of the display on the base 1.

[0027] Specifically, multiple adsorption zones are formed by adsorption holes 2 set above the base 1. Each adsorption zone can work independently through the connecting pipe 4 and the rotary valve. On the one hand, the corresponding adsorption zone can be made to work according to the needs to adapt to different sized displays. On the other hand, by dividing the edge zone and the center zone to work, the fixture can save more energy.

[0028] The sealing element includes a sealing gasket 7 that is movably mounted on the base 1. The base 1 has an installation groove 5, and a spring 6 is installed in the installation groove 5. The two ends of the spring 6 abut against the base 1 and the sealing gasket 7 respectively. The sealing gasket 7 is made of silicone, and the deformation of the sealing gasket 7 is less than 80%.

[0029] Specifically, when the display screen is placed on the base 1 and the negative pressure machine is turned on to generate negative pressure in the negative pressure chamber 3 and the adsorption hole 2, the display screen is further adsorbed. At this time, the display screen moves downward and squeezes the sealing gasket 7 and the spring 6, causing the spring 6 to deform until the display screen adheres to the surface of the base 1. After the processing is completed, the negative pressure machine is turned off, so that the spring 6 is freed from force, thereby pushing the sealing gasket 7 up and making the display screen leave the surface of the base 1 for easy removal later.

[0030] The clamping component includes: a clamping block 11, which is L-shaped and has a rubber pad attached along the L-shape. A guide rod 10 is fixedly connected to the clamping block 11, and an adjustment groove is provided on the guide rod 10. A positioning post 8 is fixedly installed on the base 1, and a knob 9 is threadedly connected to the positioning post 8. When the knob 9 is rotated, the knob 9 can abut against the guide rod 10. The positioning post 8 passes through the adjustment groove.

[0031] Specifically, the guide rod 10 set by the clamping component, together with the clamping block 11, can further clamp the liquid crystal display screen, realizing dual positioning of negative pressure adsorption and mechanical clamping, thereby making the liquid crystal display screen more stable after being placed above the base 1.

[0032] In this invention, the LCD screen is first placed above the base 1 and connected to the connecting pipe 4 via an external negative pressure machine. Then, according to the size of the screen, the corresponding adsorption area is opened through the valve. The negative pressure machine is then started, which generates negative pressure in the negative pressure chamber 3 and the adsorption hole 2, adsorbing the screen onto the base 1. When the screen is adsorbed by the negative pressure, it squeezes the sealing gasket 7, which improves the sealing effect during adsorption. On the other hand, the screen moves down and squeezes the sealing gasket 7. Then, the sealing gasket 7 squeezes the spring 6, causing the spring 6 to contract and deform until the screen fits against the base 1. Then, by adjusting the clamping parts, the knob 9 is turned to release the guide rod 10. Then, the guide rod 10 and the clamping block 11 are adjusted so that the clamping block 11 fits the four corners of the screen. Then, the guide rod 10 is locked again by rotation to complete the mechanical clamping. After the positioning work is completed, the clamping parts work steps are repeated to release the screen from the clamping block 11. Then, the negative pressure machine is turned off. At this time, the spring 6 loses its force and rebounds, pushing the sealing gasket 7 upward, thereby lifting the screen for easy removal.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A liquid crystal display screen processing jig comprising a base (1), characterized in that, Multiple adsorption zones are provided on the substrate (1). The adsorption area has multiple adsorption holes (2) arranged at equal intervals. The base (1) has a corresponding negative pressure chamber (3) in the adsorption area. Multiple connecting pipes (4) are fixedly installed on the side of the base (1) and the connecting pipes (4) are connected to the negative pressure chamber (3). A sealing element is provided at the edge of the adsorption area. When the display screen is placed on the base (1), the adsorption area and the surface of the display screen form a sealed space. The clamping members set at the four corners of the base (1) apply a clamping force parallel to the plane of the display screen on the base (1).

2. The liquid crystal display panel processing tool of claim 1, wherein The seal includes a sealing gasket (7) that is movably mounted on the base (1). The base (1) has an installation groove (5) and a spring (6) is installed in the installation groove (5). The two ends of the spring (6) abut against the base (1) and the sealing gasket (7) respectively.

3. The liquid crystal display panel processing tool of claim 2, wherein The sealing gasket (7) is made of silicone, and the deformation of the sealing gasket (7) is less than 80%.

4. The liquid crystal display panel processing tool of claim 1, wherein The clamping element includes: A clamping block (11) is fixedly connected to a guide rod (10), and an adjustment groove is provided on the guide rod (10); The positioning column (8) is fixedly installed on the base (1). The positioning post (8) is threaded with a knob (9). When the knob (9) is rotated, the knob (9) can abut against the guide rod (10). The positioning post (8) passes through the adjustment groove.

5. The liquid crystal display panel processing tool of claim 4, wherein The clamping block (11) is L-shaped, and a rubber pad is attached along the L-shaped structure.

6. A liquid crystal display screen processing fixture according to claim 1, characterized in that, A valve is provided inside the connecting pipe (4) for selectively closing the corresponding negative pressure chamber (3).

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