Tool jig capable of meeting double-sided synchronous vacuum coating
By designing a tooling fixture with an open rectangular frame and a damage-resistant clamping structure, the problems of low efficiency, unstable quality, and complex tooling adjustments in double-sided coating of LCD panels were solved, achieving efficient and stable double-sided synchronous coating, reducing production costs and improving product yield.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHU TOKEN SCI
- Filing Date
- 2025-04-27
- Publication Date
- 2026-05-15
AI Technical Summary
Existing double-sided coating processes for LCD panels suffer from low efficiency, unstable quality, and complex tooling adjustments. In particular, in coating processes requiring high precision and efficiency, traditional tooling fixtures cannot achieve simultaneous double-sided coating, resulting in extended production cycles, low equipment utilization, increased costs, and high quality risks.
The tooling fixture adopts an open rectangular frame structure, including a frame made of aviation-grade 6061 aluminum and PTFE clamps, combined with movable support blocks and height adjustment screws. It is designed with anti-slip textures and elastic buffer layers to achieve simultaneous double-sided coating, support quick adaptation to products of different sizes, and avoid displacement and scratches during the coating process.
It has achieved a production efficiency increase of over 50%, equipment utilization rate of 95%, product yield rate of 98%, cost reduction of 25%-30%, compatibility accuracy of ±0.1mm, and service life of over 3 years.
Smart Images
Figure CN224243195U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vacuum coating equipment technology, specifically a tooling fixture for simultaneous double-sided vacuum coating of liquid crystal display panels (CF side and TFT side), which is particularly suitable for coating processes that require high precision, high efficiency and high quality. Background Technology
[0002] In the manufacturing process of liquid crystal display panels (such as LCD and OLED), double-sided coating is a crucial step in improving the product's anti-static performance, optical properties, and reliability. Traditional coating fixtures often employ a "double-sided, double-sheet, multi-stage coating" method, where one side of the product is coated first, and then flipped over to coat the other side. However, this method has significant drawbacks:
[0003] 1. Low efficiency: The process of multiple coatings requires repeated clamping, vacuuming and process start-up, which increases the production cycle of a single product by 40%-60% and results in low equipment utilization.
[0004] 2. High quality risk: The cleaning process after the first coating is prone to damaging the formed film layer, resulting in problems such as uneven film thickness and reduced adhesion. The yield rate can only be maintained at 85%-90%.
[0005] 3. Poor tooling adaptability: Existing tooling relies on fixed back bars and rigid clamps. When the product size changes, the tooling bars on all four sides need to be adjusted as a whole, which takes more than 30 minutes. Moreover, the fine adjustment accuracy is insufficient and it is easy to introduce position deviation (error > 5%).
[0006] 4. Cost waste: Multiple coating processes require twice the amount of target material and energy, and equipment wear and tear is aggravated, increasing the overall cost by about 35%.
[0007] Although some improvement solutions attempt to optimize fixture design or introduce automated adjustment mechanisms, they still cannot simultaneously guarantee the process stability and tooling flexibility of double-sided synchronous coating. Therefore, there is an urgent need for a tooling fixture that can achieve double-sided one-time molding, efficiently adapt to products of multiple sizes, and ensure quality protection. Utility Model Content
[0008] 1. Technical problem to be solved:
[0009] In view of the problems existing in the prior art, the purpose of this utility model is to provide a tooling fixture that can realize double-sided synchronous vacuum coating, and solve the problems of low coating efficiency, unstable quality and complicated tooling adjustment in the prior art.
[0010] 2. Technical Solution:
[0011] To solve the above problems, the present invention adopts the following technical solution.
[0012] A tooling fixture for simultaneous double-sided vacuum coating includes a rectangular frame consisting of an upper crossbar, a lower crossbar, and left and right vertical bars.
[0013] The lower crossbar includes a lower rod body, the upper end of which is provided with a centrally located positioning slot, a movable support block is slidably disposed in the positioning slot, and the two ends of the lower rod body are symmetrically provided with first limiting sliding holes;
[0014] The upper crossbar includes an upper rod body, with second limiting sliding holes symmetrically opened at both ends of the upper rod body. Multiple back support plates are installed at the rear end of the upper rod body by bolts. Multiple upper clamps are rotatably connected to the front side of the upper rod body. The upper clamps and the back support plates are staggered.
[0015] The left and right vertical rods include side rods, and multiple process blocks are fixedly provided on the surface of the side rods. Multiple side clamps are rotatably connected to the side rods, and the side clamps are located on one side of the process blocks. Multiple mounting through holes are opened on the surface of the side rods.
[0016] The first limiting sliding hole and the second limiting sliding hole are connected to the mounting through hole by bolts to form a detachable rectangular frame structure.
[0017] A further improvement is that the rectangular frame is made of aviation aluminum 6061, and the upper clamp and side clamp are made of polytetrafluoroethylene.
[0018] A further improvement is that the movable support block includes a sliding base and a height adjustment screw. The sliding base slides in conjunction with the inner wall of the positioning slot, and the height adjustment screw is fixed to the upper surface of the sliding base by a threaded connection.
[0019] A further improvement is that the clamping ends of the upper clamp and the side clamp are provided with anti-slip textures, and the contact surface of the anti-slip textures is adapted to the edge shape of the coated product.
[0020] A further improvement is that the surface of the process block is provided with an elastic buffer layer, and the elastic buffer layer is made of silicone rubber.
[0021] 3. Beneficial effects:
[0022] Compared with the prior art, the technical solution provided by this utility model has the following advantages:
[0023] (1) Production efficiency doubled: The open rectangular frame and double-sided synchronous coating design can complete double-sided coating in a single process, shortening the production cycle by more than 50% and increasing equipment utilization to 95%. Combined with the modular and detachable structure, the changeover adjustment time is reduced from 30 minutes to within 5 minutes, and the overall production capacity is increased by 100%-120%.
[0024] (2) Overall quality improvement:
[0025] Damage prevention design: The anti-slip texture at the end of the clamp is precisely matched with the edge of the product, and the clamping force is evenly distributed. Combined with the silicone rubber elastic buffer layer, it avoids product displacement or surface scratches during the coating process, and the uniformity error of the film layer is ≤2%.
[0026] Process cleanliness: By eliminating the secondary coating step, the risk of film contamination caused by cleaning is completely avoided, and the product yield is steadily increased to over 98%.
[0027] (3) Cost and energy consumption optimization: Double-sided one-time molding reduces the consumption of target material by about 40%, reduces equipment operating energy consumption by 30%, and reduces overall production cost by 25%-30%.
[0028] (4) High flexibility and durability:
[0029] Movable support block and height adjustment screw: Supports quick adaptation to products of different heights. Only minor adjustments to the position of the upper crossbar are needed to cover similar sizes, with an adaptation accuracy of ±0.1mm.
[0030] Aviation aluminum frame and PTFE clamps: combine lightweight and corrosion resistance, extend service life to more than 3 years, and reduce maintenance costs by 50%.
[0031] This utility model, with structural innovation at its core, solves the bottlenecks of traditional tooling in terms of efficiency, quality, and cost, and provides an efficient and reliable solution for the field of precision coating.
[0032] It should be noted that the structures not described in this utility model are the same as or can be implemented using existing technology, and will not be elaborated here, as they do not involve the design points and improvement directions of this utility model. Attached Figure Description
[0033] Figure 1 This is a schematic diagram of the overall rectangular frame structure of this utility model;
[0034] Figure 2 This is a schematic diagram of the lower crossbar of this utility model;
[0035] Figure 3 This is a schematic diagram of the upper crossbar of this utility model;
[0036] Figure 4 This is a schematic diagram of the structure of the vertical rod of this utility model.
[0037] Explanation of the labels in the diagram:
[0038] 1. Lower crossbar; 11. Lower rod body; 12. Positioning slot; 13. Movable support block; 14. First limiting sliding hole;
[0039] 2. Upper crossbar; 21. Upper rod body; 22. Second limiting sliding hole; 23. Back support plate; 24. Upper clamp;
[0040] 3. Vertical rod; 31. Side rod body; 32. Process block; 33. Side clamp; 34. Mounting through hole. Detailed Implementation
[0041] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.
[0042] The tooling fixture of this utility model will be described in detail below with reference to the accompanying drawings. The specific implementation steps are as follows:
[0043] I. Component Installation and Frame Assembly
[0044] 1. Positioning and installation of lower crossbar 1
[0045] Place the lower rod 11 horizontally and install the movable support block 13 through the positioning slot 12: embed the sliding base into the slot and adjust the height of the support block 13 by adjusting the height screw to ensure that its top is level with the bottom contact surface of the coated product.
[0046] Bolts are inserted into the first limiting sliding holes 14 on both sides of the lower rod body 11, and mounting through holes 34 for connecting the left and right vertical rods 3 are reserved.
[0047] 2. Adjustment and fixing of the upper crossbar 2
[0048] Place the upper rod 21 parallel above the lower horizontal bar 1, align it with the mounting through holes 34 of the left and right vertical bars 3 through the second limiting sliding hole 22, and initially fix it with bolts.
[0049] Multiple back support plates 23 are installed at the rear end of the upper rod 21 to support the back of the coated product; the upper clamp 24 is installed simultaneously so that it is staggered with the back support plates 23 to avoid interference with the coated surface.
[0050] 3. Assembly and adjustment of left and right vertical rods 3
[0051] The side rod 31 is vertically connected to both ends of the upper and lower crossbars, and bolts are used to pass through the first limiting sliding hole 14, the second limiting sliding hole 22 and the mounting through hole 34 to form a detachable rectangular frame.
[0052] Multiple process blocks 32 are fixed on the surface of the side rod 31 to limit the lateral displacement of the coated product; a side clamp 33 is installed on one side of the process block 32 to clamp the edge of the coated product by rotation.
[0053] II. Loading and Fixing of Coated Products
[0054] 1. Product placement and positioning
[0055] Insert the coated product vertically into the positioning slot 12 of the lower crossbar 1, and ensure that the center line of the product is aligned with the center of the coating box by fine adjustment of the movable support block 13.
[0056] Adjust the height of the upper crossbar 2 so that the back support plate 23 fits against the back of the product. At the same time, the upper clamp 24 rotates to the clamping position and locks the upper edge of the product with anti-slip texture.
[0057] 2. Lateral fixation and buffer protection
[0058] Rotate the side clamps 33 of the left and right vertical rods 3 to clamp the two sides of the product. Combined with the elastic buffer layer of the process block 32, it avoids excessive clamping force that could damage the product surface.
[0059] Check the uniformity of contact between each clamp and the support plate to ensure that the product does not shake in a vacuum environment.
[0060] III. Double-sided synchronous coating operation process
[0061] 1. Tooling loading into the furnace and process start-up
[0062] The assembled tooling fixture is pushed into the vacuum coating chamber, and the direction of the heat dissipation guide fins is adjusted to be consistent with the airflow inside the chamber in order to accelerate heat dissipation and maintain the stability of the process temperature.
[0063] Start the coating equipment and simultaneously perform vapor deposition or sputtering coating on both sides of the product. The open frame design of the tooling fixture ensures uniform deposition of coating material on both sides.
[0064] 2. Coating completion and product unloading
[0065] After the coating is completed, rotate the upper clamp 24 and the side clamp 33 in the opposite direction to release the coated product and remove it vertically from the positioning slot 12.
[0066] Remove the bolts from the tooling fixture and separate the upper and lower horizontal bars and the left and right vertical bars for easy cleaning and maintenance.
[0067] IV. Operational Results and Advantages
[0068] 1. Improved efficiency of double-sided synchronous coating
[0069] By completing the double-sided process with a single coating, the time required for repeated furnace loading, vacuuming, and cooling, which is necessary for traditional multi-coating processes, is saved, increasing production capacity by more than 100%.
[0070] 2. Reduced target material consumption and equipment operating energy consumption, resulting in an overall cost reduction of approximately 30%.
[0071] 3. Product quality assurance
[0072] The anti-slip texture and elastic buffer layer design prevent product displacement or scratches during the coating process, and the uniformity error of the film layer is ≤2%.
[0073] Eliminating the secondary coating step removes the risk of contamination of the initial coating layer by the cleaning step, increasing the product yield to over 98%.
[0074] 4. Tooling flexibility and adaptability
[0075] The movable support block 13 and height adjustment screw support quick adaptation to products of different sizes. Simply adjust the position of the upper crossbar 2 to cover similar specifications, reducing the adjustment time to less than 5 minutes.
[0076] The modular frame design facilitates disassembly and maintenance, extending its service life to more than 3 years.
[0077] Summary of implementation methods:
[0078] This tooling fixture, through its modular design, adjustable movable support, and damage-resistant clamping structure, enables efficient and simultaneous completion of double-sided coating, balancing capacity, quality, and flexibility. It is suitable for precision coating applications such as LCD panels and flexible screens.
[0079] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A tooling fixture for simultaneous double-sided vacuum coating, characterized in that: It includes a rectangular frame consisting of an upper horizontal bar (2), a lower horizontal bar (1) and left and right vertical bars (3); The lower crossbar (1) includes a lower rod body (11), the upper end of the lower rod body (11) is provided with a centrally located positioning slot (12), a movable support block (13) is slidably arranged in the positioning slot (12), and the two ends of the lower rod body (11) are symmetrically provided with first limiting sliding holes (14). The upper crossbar (2) includes an upper rod body (21), and the two ends of the upper rod body (21) are symmetrically provided with second limiting sliding holes (22). The rear end of the upper rod body (21) is bolted with multiple back support plates (23). The front side of the upper rod body (21) is rotatably connected with multiple upper clamps (24), and the upper clamps (24) and the back support plates (23) are staggered. The left and right vertical rods (3) include side rod bodies (31), and multiple process blocks (32) are fixedly provided on the surface of the side rod bodies (31). Multiple side clamps (33) are rotatably connected to the side rod bodies (31). The side clamps (33) are located on one side of the process blocks (32). Multiple mounting through holes (34) are opened on the surface of the side rod bodies (31). The first limiting sliding hole (14) and the second limiting sliding hole (22) are connected to the mounting through hole (34) by bolts to form a detachable rectangular frame structure.
2. The tooling fixture for double-sided synchronous vacuum coating according to claim 1, characterized in that: The rectangular frame is made of aviation aluminum 6061, and the upper clamp (24) and side clamp (33) are made of polytetrafluoroethylene.
3. The tooling fixture for double-sided synchronous vacuum coating according to claim 1, characterized in that: The movable support block (13) includes a sliding base and a height adjustment screw. The sliding base slides in conjunction with the inner wall of the positioning slot (12), and the height adjustment screw is fixed to the upper surface of the sliding base by a threaded connection.
4. The tooling fixture for double-sided synchronous vacuum coating according to claim 1, characterized in that: The clamping ends of the upper clamp (24) and the side clamp (33) are provided with anti-slip textures, and the contact surface of the anti-slip textures is adapted to the edge shape of the coated product.
5. The tooling fixture for double-sided synchronous vacuum coating according to claim 1, characterized in that: The surface of the process block (32) is provided with an elastic buffer layer, and the material of the elastic buffer layer is silicone rubber.