Composite processing jig for LCD (liquid crystal display) electrode plate

Abstract

The invention discloses a composite machining jig for an LCD electrode plate, and relates to the technical field of electrode plate machining, the composite machining jig comprises a machine tool machining center main body and a suction cup tool, the machine tool machining center main body comprises a movable tool table, the suction cup tool comprises a suction cup platform installed on the tool table, a plurality of small holes are evenly distributed in the suction cup platform, and the suction cup platform is provided with a plurality of through holes; the small hole is provided with a negative pressure piston assembly, and the inner bottom of the small hole is communicated with an external negative pressure station through a pipeline. The electrode plate can be maximally protected from being damaged by external human and mechanical factors during disassembly and assembly through vacuum negative pressure fixation, and the mounting surface of the electrode plate and the contact surface of the suction cup platform are fixedly processed in a vacuum adsorption manner; and the defects of crushing, bumping and the like on the electrode plate are avoided, and the installation speed and the surface smoothness are improved.

Description

Technical Field

[0001] The invention relates to the technical field of machining of electrode plates, and in particular to a composite machining tool for LCD electrode plates. Background Art

[0002] Today's LCD (liquid crystal display) and OLED (organic light-emitting display) industry layout is becoming more and more stable, and the electrode plate production capacity growth is progressing in an orderly manner. The industry has entered a new stage of growth in quality demand. LCD and OLED electrode plates are widely used in various display devices due to their mature technology and relatively reasonable cost, from mobile phones, tablets, computer monitors, TVs, etc.

[0003] The electrode plate is an indispensable large component in the LCD manufacturing process. However, when the electrode plate is placed on the workbench, there is always a gap between the electrode plate and the workbench, and the workbench cannot effectively fix the electrode plate, resulting in irregular surface scratches, poor precision, inconsistent inner hole size, poor production efficiency, low service life and other defects in the electrode plate during the production process, which seriously affects the accuracy of the electrode plate and leads to unstable LCD quality.

[0004] Therefore, the applicant proposed a composite processing jig for LCD electrode plates to solve the above problems. Summary of the invention

[0005] In view of the deficiencies of the prior art, an object of the present invention is to provide a composite processing tool for LCD electrode plates.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A composite processing jig for LCD electrode plates, comprising a machine tool processing center body and a suction cup tooling, wherein the machine tool processing center body comprises a movable tooling table, and the suction cup tooling comprises a suction cup platform installed on the tooling table, wherein a plurality of small holes are evenly arranged on the suction cup platform, wherein a negative pressure piston assembly is installed in the small hole, and the inner bottom of the small hole is connected to an external negative pressure station through a pipeline; The negative pressure piston assembly includes an outer sealing plug installed in the small hole, an outer sealing ring is installed between the outer sealing plug and the inner wall of the small hole, a limiting block is installed on the top of the outer sealing plug, a limiting channel is provided in the limiting block, a piston is slidably provided in the limiting channel, the upper inner part of the limiting block is in the shape of a suction cup and is connected with the limiting channel, a piston sealing ring is provided below the piston in the limiting channel, the bottom of the piston can contact the piston sealing ring, a spring is connected between the piston and the inner bottom wall of the limiting channel, and a connecting channel is provided in the outer sealing plug for connecting the limiting channel with the pipeline.

[0007] Furthermore, the suction cup tooling also includes a main air pipeline connected to the negative pressure station, the main air pipeline extends to one side of the suction cup platform, and a plurality of bronchial pipelines are arranged on the main air pipeline, and a plurality of negative pressure cavity circuits connected to the bottom of the small hole are arranged at the lower part of the suction cup platform, and the negative pressure cavity circuits are connected to the bronchial pipelines one by one.

[0008] Furthermore, the main body of the machine tool machining center also includes a base, an X-axis guide rail is provided along the length direction of the base, the workbench is slidably arranged on the X-axis guide rail, a gantry is installed on the base, a Y-axis guide rail is provided on the gantry along the width direction of the base, a mounting seat is slidably provided on the Y-axis guide rail, a Z-axis guide rail is vertically provided on the mounting seat, a processing machine base is slidably provided on the Z-axis guide rail, and a processing tool is installed at the bottom of the processing machine base.

[0009] Furthermore, a plurality of support seats are installed on the workbench, and the suction cup platform is installed on the top of the support seat.

[0010] Furthermore, a filter is installed in the upper part of the small hole, and the bottom of the filter is connected to the top of the limit block.

[0011] Furthermore, a pressure gauge is installed on the main air pipeline between adjacent bronchial pipelines.

[0012] Furthermore, a branch air valve is installed on the bronchial tube.

[0013] Furthermore, a control panel is installed on one side of the gantry.

[0014] Furthermore, a plurality of mounting plates are connected to the main air pipeline located on one side of the suction cup platform, one side of the mounting plate is mounted on a connecting support, and the connecting support is mounted on the suction cup platform.

[0015] Compared with the prior art, the present invention provides a composite processing jig for LCD electrode plates, which has the following beneficial effects: 1. The present invention extracts the air inside the limiting channel through the negative pressure station to reach a preset vacuum range, so that the piston descends along the limiting channel. The downward movement of the piston can adsorb the electrode plate on the suction cup platform. Through the contact between the bottom of the piston and the piston sealing ring, the small hole without the electrode plate can be automatically closed, and the air between the suction cup platform and the electrode plate can be emptied, so that the two fit closely, thereby controlling the plane accuracy of the electrode plate. Through the setting of the outer sealing ring, the gap between the suction cup platform and the outer sealing plug will not leak air and cause pressure loss; 2. The present invention can maximize the protection of the electrode plate from external human and mechanical factors during disassembly and installation by fixing it with vacuum negative pressure. The mounting surface of the electrode plate and the contact surface of the suction cup platform are fixed and processed by vacuum adsorption. Compared with the traditional method of tightening the metal pressing plate by screws, it avoids defects such as crushing and bumping of the electrode plate, and improves the installation speed and surface finish. 3. The present invention has better shape and position size control. The contact surface of the suction cup platform is pre-processed on the machine tool to achieve a plane accuracy of 0.02mm. The suction cup platform is used as the reference plane for vacuum adsorption of the electrode plate, so that every square millimeter fits tightly and the plane accuracy of the electrode plate is precisely controlled. Compared with the traditional method of fixing with a pressure plate on all sides, the present invention has a higher internal fit, avoiding the vibration marks and processing size errors caused by the resonance of the installation gap during high-speed processing; 4. The present invention can optimize the program algorithm. Thanks to the fact that there are no screw pressure plates around the electrode plate to fix it, there is no need to calculate interference avoidance when generating program code, which reduces the complexity of program calculation and improves the stability of system operation. At the same time, the PLC running track is relatively smoother and simpler, avoiding the unevenness of the machining tool when the track is connected, which affects the machining quality of the electrode plate; 5. The electrode plates produced by the present invention have stable quality and shorten the manufacturing cycle. A set of mature process equipment avoids excessive human involvement in operations when performing batch production tasks, ensuring the stability and consistency of mechanical processing. There are many uncertain factors in human operations that can easily cause quality errors. The present invention not only reduces the standby time of the equipment, but also avoids waste of manpower, while also improving production efficiency and stabilizing the quality of the electrode plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view structural schematic diagram of the present invention; Figure 2 It is a right view structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the top view of the structure of the present invention; Figure 4 yes Figure 1 A schematic diagram of the enlarged structure at A in the middle; Figure 5 yes Figure 2 A schematic diagram of the enlarged structure at B in the middle; Figure 6 It is a schematic cross-sectional structure diagram of the negative pressure piston assembly of the present invention.

[0017] Markings in the figure: 1. Machine tool processing center body; 2. Suction cup tooling; 21. Suction cup platform; 22. Small hole; 23. Negative pressure piston assembly; 231. External sealing plug; 232. External sealing ring; 233. Limit block; 234. Limit channel; 235. Piston; 236. Piston sealing ring; 237. Spring; 238. Connecting channel; 239. Filter; 24. Main air pipeline; 25. Branch air pipeline; 26. Negative pressure cavity; 27. Pressure gauge; 28. Branch air valve; 3. Tooling table; 4. Negative pressure station; 5. Base; 6. X-axis guide rail; 7. Gantry; 8. Y-axis guide rail; 9. Mounting seat; 10. Z-axis guide rail; 11. Processing machine base; 12. Processing tool; 13. Control panel; 14. Support seat; 15. Connecting support; 16. Mounting plate; 17. Electrode plate. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0019] It should be noted that the directions or positional relationships indicated by terms such as “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] In the description of the present invention, “plurality” means two or more than two, unless otherwise clearly and specifically defined.

[0022] The embodiment of the present invention provides a composite processing tool for LCD electrode plate, referring to Figures 1 to 6, including a machine tool processing center body 1 and a suction cup fixture 2, the machine tool processing center body 1 includes a movable fixture table 3, the suction cup fixture 2 includes a suction cup platform 21 installed on the fixture table 3, a plurality of small holes 22 are evenly distributed on the suction cup platform 21, a negative pressure piston assembly 23 is installed on the small hole 22, the bottom of the small hole 22 is connected to the external negative pressure station 4 through a pipeline, the negative pressure piston assembly 23 includes an outer sealing plug 231 installed in the small hole 22, an outer sealing ring 232 is installed between the outer sealing plug 231 and the inner wall of the small hole 22, and the outer sealing plug 23 A limiting block 233 is installed on the top, and a limiting channel 234 is provided in the limiting block 233. A piston 235 is slidably provided in the limiting channel 234. The upper inner portion of the limiting block 233 is in the shape of a suction cup and is communicated with the limiting channel 234. A piston sealing ring 236 located below the piston 235 is provided in the limiting channel 234. The bottom of the piston 235 can contact the piston sealing ring 236. A spring 237 is connected between the piston 235 and the inner bottom wall of the limiting channel 234. A connecting channel 238 is provided in the outer sealing plug 231 for communicating the limiting channel 234 with the pipeline.

[0023] Specifically, the electrode plate 17 is processed by the main body 1 of the machine tool processing center; the electrode plate 17 is fixed by vacuum adsorption by the suction cup fixture 2; the diameter of the small hole 22 is 25 mm, and the distance between adjacent small holes is 80 mm, which can be adjusted according to actual conditions; the outer sealing plug 231 is installed at the bottom of the small hole 22; a circle of placement grooves is provided on the outer sealing plug 231, and the outer sealing ring 232 is installed in the placement groove, and the outer surface of the outer sealing ring 232 contacts the inner wall of the small hole 22, so that the suction cup platform 21 and the outer sealing plug 231 are in contact with each other. The gap between the plugging heads 231 will not leak and cause pressure loss; the limiting channel 234 extends to the inside of the outer sealing plug 231; a circle of limiting grooves is provided in the limiting channel 234, and the piston sealing ring 236 is installed in the limiting groove, and the limiting groove is located in the lower part of the limiting block 233; the upper part of the limiting block 233 is in the shape of a suction cup, which is convenient for sucking out the air between the suction cup platform 21 and the electrode plate 17; the piston 235 is located in the upper part of the limiting channel 234, and the up and down movement of the piston 235 is limited by the limiting channel 234, and the piston 23 There is a gap between the inner wall of the limiting channel 234 and the limiting channel 234, so that the air above the limiting channel 234 can be discharged from the gap through the lower part of the limiting channel 234 and the connecting channel 238, so that negative pressure is formed in the limiting channel 234 and the connecting channel 238, thereby driving the piston 235 to descend. The downward movement of the piston 235 can adsorb the electrode plate 17 on the suction cup platform 21, and the contact between the bottom of the piston 235 and the piston sealing ring 236 can realize the automatic closing of the small hole 22 of the electrodeless plate 17, thereby making The air between the suction cup platform 21 and the electrode plate 17 is evacuated so that the two fit closely together, thereby controlling the plane accuracy of the electrode plate 17; the spring 237 is located at the bottom of the piston 235, and the spring 237 is used to elastically support the piston 235 so that the piston 235 can automatically reset after pressure relief; the suction cup platform 21 is made of 7075 aluminum alloy, which has excellent physical and mechanical properties, and has outstanding performance in light weight, wear resistance, corrosion resistance and plasticity; the negative pressure station 4 is preferably a vacuum pump.

[0024] Among them, refer to Figure 6 In this embodiment, a filter 239 is installed in the upper part of the small hole 22, and the bottom of the filter 239 is connected to the top of the limit block 233.

[0025] Specifically, the filter 239 is installed on the limit block 233; the filter 239 can filter the air entering the limit channel 234, so that impurities cannot enter the limit channel 234, thereby preventing impurities from affecting the normal operation of the piston 235; the top of the filter 239 is 1 mm lower than the top surface of the suction cup platform 21, which is convenient for repairing the slight deformation accuracy of the suction cup platform 21 after the suction cup platform 21 has been used for a long time, and will not affect the function of the piston 235.

[0026] Reference Figure 1 and Figure 2 In this embodiment, a plurality of support seats 14 are installed on the workbench 3 , and the suction cup platform 21 is installed on the top of the support seat 14 .

[0027] Specifically, the number of support seats 14 is set according to the actual size of the suction cup platform 21; the support seats 14 support the suction cup platform 21, and the suction cup platform 21 can be debugged to a horizontal accuracy that meets the technical requirements through the support seats 14; a plurality of mounting grooves arranged along the length direction of the workbench 3 are opened, and the support seats 14 can be installed on the mounting grooves by bolts, so as to position the support seats 14. Through this design, the number of installed support seats 14 can be increased or reduced according to the length of the suction cup platform 21, thereby increasing practicality.

[0028] Reference Figure 4 and Figure 5 In this embodiment, the suction cup tooling 2 also includes a main air pipeline 24 connected to the negative pressure station 4, the main air pipeline 24 extends to one side of the suction cup platform 21, and a plurality of bronchial pipelines 25 are provided on the main air pipeline 24, and a plurality of negative pressure cavity paths 26 connected to the bottom of the small hole 22 are provided in the lower part of the suction cup platform 21, and the negative pressure cavity paths 26 are connected to the bronchial pipelines 25 one by one.

[0029] Specifically, the negative pressure station 4 is connected to several bronchial pipes 25 through several main air pipes 24, and adjacent main air pipes 24 are connected through sealing joints to prevent the suction cup tooling 2 from leaking and losing pressure; the connecting channel 238 is connected to the negative pressure cavity 26; the suction cup platform 21 is provided with several horizontal rows of small holes 22 along the length direction of the tooling platform 3, and each horizontal row of small holes 22 is provided with several holes, and each horizontal row of small holes 22 is connected to a negative pressure cavity 26 at the bottom, and the negative pressure cavity 26 is connected to the bronchial pipe 25 correspondingly, that is, one bronchial pipe 25 can control the adsorption pressure of a horizontal row of small holes 22; when exhausting, negative pressure is formed in the negative pressure cavity 26, which can drive the piston 235 to descend, so that the electrode plate 17 is closely fitted to the surface of the suction cup platform 21, thereby controlling the plane accuracy of the electrode plate 17.

[0030] Among them, refer to Figure 5 In this embodiment, a barometer 27 is installed on the main air pipeline 24 between adjacent branch air pipelines 25.

[0031] Specifically, by setting up the pressure gauge 27, the staff can manually intervene in the negative pressure piston assembly 23 through the value of the pressure gauge 27, so as to achieve the tooling purpose required by the electrode plate 17 with different settings; a pressure sensing probe connected to the main air pipeline 24 is also provided on one side of the pressure gauge 27 to perform fault-tolerant detection. During the use of the suction cup tooling 2, it is prevented that the pressure reading is incorrect due to the failure of a certain pressure gauge 27, and the state of the suction cup tooling 2 is misjudged to cause the occurrence of quality accidents.

[0032] Reference Figure 5 In this embodiment, a branch valve 28 is installed on the bronchial tube 25 for opening or closing the bronchial tube 25 .

[0033] Specifically, during the processing of the electrode plate 17, the bronchial tubes 25 are all opened, and when the device is not in use, the bronchial tubes 25 are all closed; the branch gas valve 28 can be a solenoid valve for easy control.

[0034] Reference Figure 4 and Figure 5 In this embodiment, a plurality of mounting plates 16 are connected to the main air pipeline 24 located on one side of the suction cup platform 21 , one side of the mounting plate 16 is mounted on a connecting support 15 , and the connecting support 15 is mounted on the suction cup platform 21 .

[0035] Specifically, the connecting support 15 is installed on one side of the suction cup platform 21; the main air pipeline 24 passes through the mounting plate 16, and the mounting plate 16 supports the main air pipeline 24; the setting of the connecting support 15 and the mounting plate 16 facilitates the installation of the main air pipeline 24 on one side of the suction cup platform 21.

[0036] Reference Figures 1 to 3 In this embodiment, the machine tool machining center body 1 also includes a base 5, an X-axis guide rail 6 is provided along the length direction of the base 5, the workbench 3 is slidably arranged on the X-axis guide rail 6, a gantry 7 is installed on the base 5, a Y-axis guide rail 8 is provided on the gantry 7 along the width direction of the base 5, a mounting seat 9 is slidably provided on the Y-axis guide rail 8, a Z-axis guide rail 10 is vertically provided on the mounting seat 9, a processing machine base 11 is slidably provided on the Z-axis guide rail 10, a processing tool 12 is installed at the bottom of the processing machine base 11, and the electrode plate 17 is processed.

[0037] Specifically, by setting the X-axis guide rail 6 , the Y-axis guide rail 8 and the Z-axis guide rail 10 , the processing tool 12 can move freely without being affected by the size environment, so that various positions on the surface of the electrode plate 17 can be processed conveniently.

[0038] Reference Figures 1 to 3 In this embodiment, a control panel 13 is installed on one side of the gantry 7.

[0039] Specifically, the control panel 13 can be a PLC control panel; the negative pressure station 4, the movement of the tooling table 3 on the X-axis guide rail 6, the movement of the mounting seat 9 on the Y-axis guide rail 8, the movement of the processing machine base 11 on the Z-axis guide rail 10, the processing of the processing tool 12 and the opening and closing of the branch air valve 28 are controlled through the control panel 13; during the processing operation, when the electrode plate 17 is subjected to external forces, resulting in the electrode plate 17 being squeezed or deformed, causing the negative pressure piston assembly 23 to fail, the data fed back by the barometer 27 and the pressure sensing probe will be automatically calculated by the PLC control system, and the negative pressure station 4 will automatically release or increase the corresponding point pressure value according to the calculation result, and finally ensure that the electrode plate 17 is always horizontally adsorbed on the table of the suction cup platform 21. Thereby reducing errors and achieving accurate values.

[0040] Working principle: Control the tooling table 3 to return to the mechanical origin state through the operation control panel 13, that is, install the suction cup tooling 2 and the electrode plate 17 in this state, and fix the suction cup platform 21 on the tooling table 3 through the support seat 14, so that the suction cup platform 21 and the tooling table 3 are a moving whole, and then debug the suction cup platform 21 to achieve the horizontal accuracy that meets the technical requirements, and then place the electrode plate 17 on the suction cup platform 21, so that the accuracy is less than the allowable error range, connect the negative pressure station 4 to the suction cup platform 21 through the main air pipeline 24 and the bronchial pipeline 25, start the negative pressure station 4, and the negative pressure will be transmitted to the negative pressure cavity 26 through the main air pipeline 24 and the bronchial pipeline 25, and negative pressure will be formed in the negative pressure cavity 26, from The air between the suction cup platform 21 and the electrode plate 17 is exhausted, thereby driving the piston 235 to descend, so that the electrode plate 17 is closely fitted with the surface of the suction cup platform 21, thereby controlling the plane accuracy of the electrode plate 17. The staff can observe the value of the barometer 27 and manually intervene in the negative pressure piston assembly 23 to achieve the tooling purpose required by the electrode plate 17 with different settings; during the entire processing cycle, the negative pressure station 4 detects the vacuum degree throughout the process through PLC parameters. When the vacuum degree of the negative pressure cavity circuit 26 is lower than the preset vacuum degree value, the negative pressure station 4 will autonomously supplement the pressure of the vacuum cavity, thereby improving the various processing accuracies of the stable electrode plate 17 during the processing and realizing closed-loop operation.

[0041] The present invention can maximize the protection of the electrode plate 17 from damage by external human and mechanical factors during disassembly and installation by fixing with vacuum negative pressure. The mounting surface of the electrode plate 17 and the contact surface of the suction cup platform 21 are fixed and processed by vacuum adsorption. Compared with the traditional method of tightening the metal pressing plate by screwing, it avoids the defects such as crushing and bumping of the electrode plate 17, and improves the installation speed and surface finish. The present invention has better shape and position size control. The contact surface of the suction cup platform 21 is pre-processed on the machine tool to machine the plane accuracy to 0.02mm. The suction cup platform 21 is used as the reference plane to vacuum adsorb the electrode plate 17, so that every square millimeter fits tightly and the plane accuracy of the electrode plate 17 is accurately controlled. Compared with the traditional method of fixing with a pressing plate around the periphery, the present invention has a higher internal fit, avoiding the vibration knife mark and processing size error caused by the resonance of the installation gap during high-speed processing; The present invention can optimize the program algorithm. Thanks to the fact that there are no screw pressure plates around the electrode plate 17 to fix it, there is no need to calculate interference avoidance when generating program code, which reduces the complexity of program calculation, improves the stability of system operation, and makes the PLC running track relatively smoother and simpler, avoiding the unevenness of the machining tool affecting the machining quality of the electrode plate 17 when the track is connected; The electrode plate 17 produced by the present invention has stable quality and shortens the manufacturing cycle. A set of mature process equipment avoids excessive human involvement in operations when performing batch production tasks, ensuring the stability and consistency of mechanical processing. There are many uncertain factors in human operations that can easily cause quality errors. The present invention not only reduces the standby time of the equipment, but also avoids waste of manpower, while also improving production efficiency and stabilizing the quality of the electrode plate 17.

[0042] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also belong to the scope of protection of the present invention.

Claims

1. A composite processing jig for LCD electrode plates, comprising a machine tool processing center body (1) and a suction cup fixture (2), characterized in that: The machine tool processing center body (1) comprises a movable tooling table (3), the suction cup tooling (2) comprises a suction cup platform (21) mounted on the tooling table (3), a plurality of small holes (22) are evenly distributed on the suction cup platform (21), a negative pressure piston assembly (23) is installed in the small hole (22), and the inner bottom of the small hole (22) is connected to an external negative pressure station (4) through a pipeline; The negative pressure piston assembly (23) comprises an outer sealing plug (231) installed in the small hole (22), an outer sealing ring (232) is installed between the outer sealing plug (231) and the inner wall of the small hole (22), a limit block (233) is installed on the top of the outer sealing plug (231), a limit channel (234) is provided in the limit block (233), a piston (235) is slidably provided in the limit channel (234), and the upper inner portion of the limit block (233) is The outer sealing plug (231) is in the shape of a suction cup and is connected to the limiting channel (234). The limiting channel (234) is provided with a piston sealing ring (236) located below the piston (235). The bottom of the piston (235) can contact the piston sealing ring (236). A spring (237) is connected between the piston (235) and the inner bottom wall of the limiting channel (234). The outer sealing plug (231) is provided with a connecting channel (238) for connecting the limiting channel (234) with a pipeline.

2. The composite processing jig for LCD electrode plates according to claim 1, characterized in that: The suction cup tooling (2) further comprises a main air pipeline (24) connected to the negative pressure station (4), the main air pipeline (24) extending to one side of the suction cup platform (21), and a plurality of bronchial pipelines (25) being provided on the main air pipeline (24), a plurality of negative pressure cavity paths (26) connected to the bottom of the small hole (22) being provided at the lower part of the suction cup platform (21), the negative pressure cavity paths (26) being connected to the bronchial pipelines (25) in a one-to-one correspondence.

3. The composite processing jig for LCD electrode plates according to claim 1, characterized in that: The machine tool machining center body (1) also includes a base (5), an X-axis guide rail (6) is provided along the length direction of the base (5), the tooling table (3) is slidably arranged on the X-axis guide rail (6), a gantry (7) is installed on the base (5), a Y-axis guide rail (8) is provided on the gantry (7) along the width direction of the base (5), a mounting seat (9) is slidably arranged on the Y-axis guide rail (8), a Z-axis guide rail (10) is vertically arranged on the mounting seat (9), a processing machine base (11) is slidably arranged on the Z-axis guide rail (10), and a processing tool (12) is installed at the bottom of the processing machine base (11).

4. The composite processing jig for LCD electrode plates according to claim 1, characterized in that: A plurality of support seats (14) are installed on the workbench (3), and the suction cup platform (21) is installed on the top of the support seat (14).

5. The composite processing jig for LCD electrode plates according to claim 1, characterized in that: A filter (239) is installed in the upper inner portion of the small hole (22), and the bottom of the filter (239) is connected to the top of the limiting block (233).

6. The composite processing jig for LCD electrode plates according to claim 2, characterized in that: A pressure gauge (27) is installed on the main air pipeline (24) between adjacent bronchial pipelines (25).

7. The composite processing tool for LCD electrode plate according to claim 6, characterized in that: A branch air valve (28) is installed on the bronchial pipeline (25).

8. The composite processing tool for LCD electrode plate according to claim 3, characterized in that: A control panel (13) is installed on one side of the gantry (7).

9. The composite processing tool for LCD electrode plate according to claim 6, characterized in that: A plurality of mounting plates (16) are connected to the main air pipeline (24) located on one side of the suction cup platform (21); one side of the mounting plate (16) is mounted on a connecting support (15); and the connecting support (15) is mounted on the suction cup platform (21).

Images