A positioning device for processing

Abstract

The present invention discloses a positioning device for processing, which relates to the field of liquid crystal display screen processing. It includes a workbench, a positioning component, a fixing component, a pressing device, and a gas circuit component. The positioning component, the fixing component, and the pressing device are all arranged on the workbench. The fixing component includes a positioning plate and a sealing plate. The positioning plate is provided with positioning grooves, and a number of first adsorption holes are evenly distributed on the positioning grooves. The sealing plate is fixedly connected to the positioning plate and forms a number of sealing cavities. Each sealing cavity communicates with a number of rows of first adsorption holes. By rotating the positioning plate, the film can contact the liquid crystal module in an inclined state, and only the edge is attached at the beginning of the contact. As the pressing roller moves, the attachment area can be gradually enlarged, reducing the situation that a large number of bubbles are easily left when the whole film contacts the substrate. And in this process, the gas circuit component is used to sequentially close the first adsorption holes close to the pressing roller, so as to ensure that the film is always in a positioned state when it is not completely attached.

Description

Technical Field

[0001] The present invention relates to the field of liquid crystal display processing, and particularly relates to a positioning device for processing. Background Art

[0002] During the production process of liquid crystal displays, multiple film-like components (such as OCA films, explosion-proof films, light-filtering films, liquid crystal layers) usually need to be assembled and bonded with liquid crystal modules to obtain a complete liquid crystal display.

[0003] Some existing film components are mostly sucked by suction cups when being bonded, then transported to the liquid crystal module, and then the film is driven to move down to the liquid crystal module to achieve bonding. Since the film contacts the liquid crystal module as a whole in this bonding method, it is easy to leave some bubbles at the off-center positions between various films and the liquid crystal module. Although the liquid crystal display will be defoamed in subsequent procedures, there will still be some bubbles that are difficult to extract. In addition, in the existing positioning device for bonding and assembling films and liquid crystal modules, when bonding the film, all the suction cups adsorbed to the film will be automatically released instead of being released sequentially as the bonding process progresses. This makes the film prone to offset at the moment of detachment, affecting the bonding effect. Summary of the Invention

[0004] The purpose of the present invention is to provide a positioning device for processing to solve the problems mentioned in the above background art.

[0005] A positioning device for processing includes a workbench, a positioning component, a fixing component, a pressing device, and a gas circuit component. The fixing component is fixedly arranged on the workbench and is used to position the liquid crystal module. The positioning component includes a positioning plate and a sealing plate. The positioning plate is provided with positioning grooves for positioning the film, and a plurality of first adsorption holes are evenly distributed on the positioning grooves;

[0006] The sealing plate is fixedly connected to the positioning plate and forms a plurality of sealing cavities. Each sealing cavity is communicated with a plurality of rows of first adsorption holes. The sealing plate is provided with air extraction pipes (221) corresponding to and communicated with the sealing cavities one by one, and the plurality of sealing cavities are not communicated with each other; One end of the positioning plate is rotatably connected to a bracket on the workbench and drives the film to be bonded to rotate to the fixing component, so that one end of the film is bonded to the liquid crystal module;

[0007] The pressing device includes a movable pressing roller and a sliding seat. The pressing roller is arranged on the sliding seat. When the pressing roller moves above the liquid crystal module, the film is bonded to the liquid crystal module, and the gas circuit component is driven to sequentially close the adsorption effect of the first adsorption holes during the movement of the pressing roller, so that the film gradually detaches from the positioning groove.

[0008] Preferably, the positioning component further includes a fixing frame, a first motor, and a rotating shaft. The fixing frame is fixedly connected to the workbench. The first motor is fixedly connected to the fixing frame, and a rotating shaft is fixedly connected to its output shaft. The rotating shaft is fixedly connected to the positioning plate.

[0009] Preferably, the fixing component includes a fixing plate and a base. The fixing plate is fixedly connected to the base, and a sealed cavity is formed between the two. An air suction pipe communicating with the cavity is provided on the side wall of the fixing plate. The air suction pipe is connected to a vacuum generator. A fixing groove is provided on the fixing plate, and a second adsorption hole is provided in the fixing groove.

[0010] Preferably, the pressing device further includes a second motor. The second motor is fixedly connected to the workbench, and a lead screw is fixedly connected to its output shaft. The lead screw is rotatably connected to the base and is threadedly connected to the sliding seat. The sliding seat is slidably connected to a guide rail provided on the workbench.

[0011] Preferably, the air circuit component includes a cylinder body and a piston rod. The cylinder body is fixedly connected to the workbench. A main air pipe is provided at one end of the cylinder body, and a piston rod is slidably connected to the other end. The piston rod is fixedly connected to the sliding seat. A plurality of branch air pipes are equidistantly arranged along the axial direction on the circumferential wall of the cylinder body. The branch air pipe close to the main air pipe is connected to the air extraction pipe close to the rotating shaft, and the subsequent branch air pipes are sequentially connected to the air extraction pipes one by one. The piston rod is a hollow pipe body with an open outer end, and an annular groove is provided at its inner end. A through hole communicating with the inside of the piston rod is provided in the annular groove. The main air pipe is connected to a vacuum generator.

[0012] Preferably, sealing gaskets are provided between the positioning plate and the sealing plate and between the fixing plate and the base.

[0013] Preferably, an oil pressure buffer is provided below the positioning plate. The oil pressure buffer is fixedly connected to the workbench.

[0014] The advantages of the present invention are as follows:

[0015] The positioning plate is designed to be rotatable. When positioning the film, it can be rotated to a state where the positioning groove faces upward, which is convenient for installing and positioning the film to be assembled into the positioning groove. Then, by rotating the positioning plate again, the film can be in an inclined state to contact the liquid crystal module. At the beginning of contact, only the edge is adhered. As the pressing roller moves, the adhered area can be gradually expanded, reducing the situation that a large number of bubbles are likely to remain when the whole film contacts the substrate;

[0016] And in this process, the air circuit component is used to sequentially close the first adsorption holes close to the pressing roller, but the first adsorption holes far from the pressing roller still remain in the state of adsorbing the film, so as to ensure that the film is always in a positioned state when it is not fully adhered, and avoid the situation that the whole film moves downward and deviates due to the simultaneous closing of the first adsorption holes. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the initial state of the device;

[0018] Figure 2 is a schematic structural diagram when the positioning plate starts to fit after rotation;

[0019] Figure 3 is an overall cross-sectional view of the present invention;

[0020] Figure 4 is a cross-sectional view of the gas path assembly;

[0021] Figure 5 is a schematic structural diagram of the pressing device.

[0022] In the figure: 1, workbench; 2, positioning assembly; 21, positioning plate; 211, positioning groove; 212, first adsorption hole; 22, sealing plate; 221, exhaust pipe; 23, sealing cavity; 24, fixing bracket; 25, first motor; 26, rotating shaft; 27, bracket;

[0023] 3, fixing assembly; 31, fixing plate; 311, air suction pipe; 312, fixing groove; 313, second adsorption hole; 32, base;

[0024] 4, pressing device; 41, pressing roller; 42, second motor; 43, sliding seat; 44, lead screw; 45, guide rail;

[0025] 5, gas path assembly; 51, cylinder body; 511, main air pipe; 512, branch air pipe; 52, piston rod; 521, annular groove; 522, through hole; 6, sealing gasket; 7, oil buffer. Detailed Description of the Invention

[0026] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0027] As Figures 1 to 5 shown, a positioning device for processing includes a workbench 1, a positioning assembly 2, a fixing assembly 3, a pressing device 4 and a gas path assembly 5. The positioning assembly 2, the fixing assembly 3 and the pressing device 4 are all arranged on the workbench 1. The fixing assembly 3 is used to position the liquid crystal module. The positioning assembly 2 includes a positioning plate 21 and a sealing plate 22. The positioning plate 21 is provided with a positioning groove 211 for positioning the film, and a plurality of first adsorption holes 212 are evenly distributed on the positioning groove 211.

[0028] The sealing plate 22 is fixedly connected to the positioning plate 21 and forms a plurality of sealing cavities 23. Each sealing cavity 23 communicates with a plurality of rows of first adsorption holes 212, and the sealing cavities 23 are not communicated with each other. The positioning plate 21 can rotate around one end thereof and drive the film to be attached to rotate to the fixing assembly 3, so that one end of the film is attached to the liquid crystal module.

[0029] The pressing device 4 includes a movable pressing roller 41. When the pressing roller 41 moves above the liquid crystal module, the film is attached to the liquid crystal module, and the air path assembly 5 is driven to sequentially close the adsorption effect of the first adsorption holes 212 during the movement of the pressing roller 41, so that the film gradually detaches from the positioning groove 211.

[0030] In this embodiment, the positioning assembly 2 further includes a fixing frame 24, a first motor 25 and a rotating shaft 26. The fixing frame 24 is fixedly connected to the workbench 1. The first motor 25 is fixedly connected to the fixing frame 24, and its output shaft is fixedly connected to the rotating shaft 26. The rotating shaft 26 is fixedly connected to the positioning plate 21. The rotating shaft 26 is rotatably connected to the bracket 27 on the workbench 1. The sealing plate 22 is provided with air extraction pipes 221 that are respectively and correspondingly communicated with the sealing cavities 23.

[0031] In this embodiment, the fixing assembly 3 includes a fixing plate 31 and a base 32. The fixing plate 31 is fixedly connected to the base 32, and a sealed cavity is formed between the two. The side wall of the fixing plate 31 is provided with an air suction pipe 311 that communicates with the cavity. The air suction pipe 311 is connected to a vacuum generator. The fixing plate 31 is provided with a fixing groove 312, and a second adsorption hole 313 is arranged in the fixing groove 312.

[0032] In this embodiment, the pressing device 4 further includes a second motor 42 and a sliding seat 43. The second motor 42 is fixedly connected to the workbench 1, and its output shaft is fixedly connected to a lead screw 44. The lead screw 44 is rotatably connected to the base 32 and is threadedly connected to the sliding seat 43. The sliding seat 43 is slidably connected to a guide rail 45 arranged on the workbench 1.

[0033] In this embodiment, the air circuit assembly 5 includes a cylinder body 51 and a piston rod 52. The cylinder body 51 is fixedly connected to the workbench 1. One end of the cylinder body 51 is provided with a main air pipe 511, and the other end thereof is slidably connected with the piston rod 52. The piston rod 52 is fixedly connected to the sliding seat 43. A plurality of branch air pipes 512 are equidistantly arranged along the axial direction on the circumferential wall of the cylinder body 51. The branch air pipe 512 close to the main air pipe 511 is connected to the air extraction pipe 221 close to the rotating shaft 26, and the subsequent branch air pipes 512 are sequentially connected to the air extraction pipes 221 one by one, so that the adsorption holes one gradually approaching the pressing roller can be temporarily in a non-working state. The piston rod 52 is a hollow pipe body with an open outer end, and an annular groove 521 is provided at its inner end. The part of the inner end of the piston rod 52 except the annular groove 521 is in sealed sliding connection with the cylinder body. A through hole 522 communicating with the inside of the piston rod 52 is provided in the annular groove 521. The main air pipe 511 is connected to a vacuum generator.

[0034] In this embodiment, sealing gaskets 6 are provided between the positioning plate 21 and the sealing plate 22 and between the fixing plate 31 and the base 32 for sealing.

[0035] In this embodiment, an oil pressure buffer 7 is provided below the positioning plate 21, and the oil pressure buffer 7 is fixedly connected to the workbench 1. The oil pressure buffer 7 is used to apply buffering to the positioning plate 21.

[0036] Working process and principle:

[0037] First, place the liquid crystal module in the fixing groove 312, and use the adsorption holes two 313 to perform negative pressure adsorption on the liquid crystal module. Similarly, the film is placed on the positioning groove 211, and the adsorption holes one 212 are used to adsorb and fix the film. At this time, part of the film extends out of the positioning groove 211.

[0038] The pressing roller 41 is located at one end far from the positioning plate 21. At this time, the piston rod 52 is also at the end far from the main air pipe 511. Therefore, the main air pipe 511 is simultaneously communicated with all the branch air pipes 512, that is, the vacuum generator can evacuate all the sealing cavities 23 through the main air pipe 511, the branch air cylinders and the air extraction pipes 221, so that negative pressure adsorption is generated in all the adsorption holes one 212.

[0039] Subsequently, the first motor 25 is started to drive the positioning plate 21 to rotate, so that the positioning plate 21 rotates from the original horizontal state with the adsorption holes facing upward to the inclined state with the adsorption holes facing downward. The oil pressure buffer 7 is used to apply buffering to the positioning plate 21. At this time, the extended end of the film contacts the liquid crystal module. The second motor 42 is started, and through the rotation of the lead screw 44, the sliding seat 43 is driven to move towards the positioning plate 21, so as to press the film and the liquid crystal module together little by little by using the pressing roller 41, reducing the bubbles generated by one-time lamination.

[0040] During the movement of the sliding seat 43, when the annular groove 521 on the piston rod 52 corresponds to the sub-air pipe 512, the sub-air pipe 512 at this position is not connected to the main air pipe 511, but is connected to the inside of the piston rod 52. External air can smoothly enter the sealing cavity 23 connected to the sub-air pipe 512, destroying the vacuum state of the sealing cavity 23. As a result, the adsorption holes 212 in the area of the sealing cavity 23 are in a suspended adsorption state, that is, the adsorption holes 212 close to the pressing roller 41 fail. At this time, the film can be separated from the positioning groove 211 by a part and be attached to the liquid crystal module by the pressing roller 41.

[0041] And so on, until the main air pipe 511 is not connected to any sub-air pipe 512, then all the adsorption holes 212 are in a non-working state, so as to achieve the purpose of enabling the film to be attached while being separated from the positioning groove 211, avoiding the situation of position deviation caused by a one-time separation from the positioning groove 211.

[0042] After the film is attached, the pressing roller 41 resets, the piston rod 52 follows to reset, the positioning plate 21 rotates to the initial state, the adsorption holes 313 of the second type pause adsorption, and then the assembled liquid crystal display component can be removed. The adsorption holes 212 of the first type can normally adsorb the subsequent film when the vacuum generator is working.

[0043] As is known by common technical knowledge, the present invention can be implemented by other embodiments that do not depart from its spiritual essence or essential features. Therefore, the above-disclosed embodiments are illustrative in all aspects and are not the only ones. All changes within the scope of the present invention or equivalent to the present invention are encompassed by the present invention.

Claims

1. A positioning device for processing, characterized in that: It includes a workbench (1), a positioning component (2), a fixing component (3), a pressing device (4) and a gas circuit component (5). The fixing component (3) is fixedly arranged on the workbench (1), and the fixing component (3) is used for positioning the liquid crystal module. The positioning component (2) includes a positioning plate (21) and a sealing plate (22). The positioning plate (21) is provided with positioning grooves (211) for positioning the film, and a number of first suction holes (212) are evenly distributed on the positioning grooves (211). The sealing plate (22) is fixedly connected to the positioning plate (21) and forms a number of sealed cavities (23). Each sealed cavity (23) communicates with a number of rows of first suction holes (212). The sealing plate (22) is provided with air extraction pipes (221) that communicate with the sealed cavities (23) one by one. The several sealed cavities (23) do not communicate with each other. A rotating shaft (26) at one end of the positioning plate (21) is rotatably connected to a bracket (27) on the workbench (1) and drives the film to be laminated to rotate to the fixing component (3) so that one end of the film is laminated to the liquid crystal module. The pressing device (4) includes a movable pressing roller (41) and a sliding seat (43). The pressing roller (41) is arranged on the sliding seat (43). When the pressing roller (41) moves upward above the liquid crystal module, the film is laminated to the liquid crystal module, and the gas circuit component (5) is driven to sequentially close the suction effect of the first suction holes (212) during the movement of the pressing roller (41), so that the film gradually disengages from the positioning grooves (211). The gas circuit component (5) includes a cylinder body (51) and a piston rod (52). The cylinder body (51) is fixedly connected to the workbench (1). One end of the cylinder body (51) is provided with a main air pipe (511), and the other end of the cylinder body (51) is slidably connected with a piston rod (52). The piston rod (52) is fixedly connected to the sliding seat (43). A number of branch air pipes (512) are equidistantly arranged along the axial direction on the circumferential wall of the cylinder body (51). The branch air pipe (512) close to the main air pipe (511) is connected to the air extraction pipe (221) close to the rotating shaft (26), and the subsequent branch air pipes (512) are sequentially connected to the air extraction pipes (221) one by one. The piston rod (52) is a hollow pipe body with an open outer end, and an annular groove (521) is provided at its inner end. A through hole (522) that communicates with the inside of the piston rod (52) is provided in the annular groove (521). The main air pipe (511) is connected to a vacuum generator.

2. The positioning device for processing according to claim 1, wherein: The positioning component (2) further includes a fixing frame (24), a first motor (25) and a rotating shaft (26). The fixing frame (24) is fixedly connected to the workbench (1). The first motor (25) is fixedly connected to the fixing frame (24), and its output shaft is fixedly connected with a rotating shaft (26). The rotating shaft (26) is fixedly connected to the positioning plate (21).

3. A positioning device for processing according to claim 1, characterized in that: The fixing component (3) includes a fixing plate (31) and a base (32). The fixing plate (31) is fixedly connected to the base (32), and a sealed cavity is formed therebetween. A suction pipe (311) communicating with the cavity is provided on the side wall of the fixing plate (31). The suction pipe (311) is connected to a vacuum generator. A fixing groove (312) is provided on the fixing plate (31), and a second adsorption hole (313) is provided in the fixing groove (312).

4. A positioning device for processing according to claim 1, characterized in that: The pressing device (4) further includes a second motor (42). The second motor (42) is fixedly connected to the workbench (1), and a lead screw (44) is fixedly connected to its output shaft. The lead screw (44) is rotatably connected to the base (32) and is threadedly connected to a sliding seat (43). The sliding seat (43) is slidably connected to a guide rail (45) provided on the workbench (1).

5. A positioning device for processing according to claim 1, characterized in that: Sealing gaskets (6) are provided between the positioning plate (21) and the sealing plate (22) and between the fixing plate (31) and the base (32).

6. The positioning device for processing according to claim 1, characterized in that: An oil buffer (7) is provided below the positioning plate (21). The oil buffer (7) is fixedly connected to the workbench (1).

Images