A film pasting jig for reducing dust defect rate

Abstract

The utility model provides a kind of film pasting jig for reducing dust defect rate, including film pasting plate and the suction unit being installed in the bottom of film pasting plate, the film pasting plate is formed with the film pasting cavity matched with product form, the lower part of four side walls of the film pasting cavity is evenly provided with the air suction port connected with the suction unit;The upper surface of the film pasting plate is provided with dust removal structure;The dust removal structure includes two sliding platform modules, two electric telescopic rods, an ion wind stick, two The sliding platform module is respectively installed on the opposite sides of the upper surface of the film pasting plate, two The electric telescopic rod is respectively fixedly installed on the sliding base of the sliding platform module, the free end of two The electric telescopic rod is respectively fixedly connected with the two sides of the ion wind stick;The four side walls of the film pasting cavity are provided with sealing pad, the sealing pad is provided with through-hole in the position corresponding to the air suction port;Integrated dust removal structure, reduce dust defect rate.

Description

Technical Field

[0001] This utility model belongs to the field of pneumatic film application fixture technology, specifically a film application fixture that reduces the dust defect rate. Background Technology

[0002] Chinese Patent Publication No. CN217023033U, published on July 22, 2022, discloses a pneumatic film-applying fixture, including an applicator plate. An applicator groove is formed inside the upper side of the applicator plate, and a first air inlet, a second air inlet, a third air inlet, and a fourth air inlet are respectively arranged on the four sides of the outer side of the applicator groove. One end of the first air inlet is connected to a first suction pipe, one end of the second air inlet is connected to a second suction pipe, one end of the third air inlet is connected to a third suction pipe, and one end of the fourth air inlet is connected to... The invention includes a fourth suction pipe. One end of each of the first, second, third, and fourth suction pipes is connected to a vacuum pump. The included film-applying groove facilitates the positioning of the protective film and the frame. Four suction ports are located on the outer sides of the film-applying groove, with each port connected to a suction pipe and a vacuum pump. This allows for vacuum-assisted film application between the protective film and the frame, minimizing air bubbles and improving application efficiency. However, this existing technology lacks a pre-dust removal design, leading to a high impurity rate in the applied film due to environmental dust. Therefore, improvements are urgently needed. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, this utility model provides a film-applying fixture that reduces the dust defect rate by integrating a dust removal structure.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a film-applying fixture for reducing dust defect rate, comprising a film-applying plate and an air extraction unit installed at the bottom of the film-applying plate. The film-applying plate forms a film-applying cavity that matches the product shape. Air intake ports connected to the air extraction unit are provided on the lower part of the four side walls of the film-applying cavity. A dust removal structure is provided on the upper surface of the film-applying plate. The dust removal structure includes two sliding table modules, two electric telescopic rods, and an ionizing air bar. The two sliding table modules are respectively installed on opposite sides of the upper surface of the film-applying plate. The two electric telescopic rods are respectively fixedly installed on the sliding bases of the sliding table modules, and the free ends of the two electric telescopic rods are respectively fixedly connected to the two sides of the ionizing air bar. Sealing gaskets are provided on the four side walls of the film-applying cavity. Through holes are provided on the sealing gaskets at positions corresponding to the air intake ports. The sealing gaskets adopt a three-layer composite structure. Pneumatic push rods are installed on opposite sides of the upper surface of the film-applying plate along its length direction. Limit blocks are installed on the side of the pneumatic push rods facing the film-applying cavity.

[0005] Preferably, the sealing gasket includes a fluororubber inner layer, a silicone middle layer, and a ceramic coating outer layer. Multiple N35 neodymium iron boron magnetic strips are pre-embedded in the silicone middle layer in an orderly manner, and an epoxy resin encapsulation layer is provided between two adjacent N35 neodymium iron boron magnetic strips. The four side walls of the film-applying cavity are made of 316L stainless steel.

[0006] Preferably, the thickness of the outer layer of the ceramic coating is set to 0.1 mm; the spacing between two adjacent N35 neodymium iron boron magnetic strips is set to 10 mm.

[0007] Preferably, rubber limiting blocks are installed on both opposite sides of the upper surface of the film plate in the width direction.

[0008] Preferably, the sidewall of the film plate is formed with a dovetail slot, and dovetail inserts matching the dovetail slot are provided on opposite sides of the sealing gasket along its length.

[0009] The beneficial effects of this utility model are as follows: the upper surface of the film-applying plate is provided with a dust removal structure. Before applying the film, the film layer is dusted by an ion air bar, reducing the dust defect rate; the four side walls of the film-applying cavity are provided with sealing gaskets to improve the sealing of the film-applying cavity; pneumatic push rods are installed on opposite sides of the upper surface of the film-applying plate along the length direction to realize automatic positioning of the product. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings.

[0011] Figure 1 This is a perspective view of the present invention.

[0012] Figure 2 This is a cross-sectional view of the sealing gasket.

[0013] Figure 3 This is a schematic diagram of the assembly structure of the sealing gasket and the film plate.

[0014] In the diagram: 10. Film application plate, 11. Film application cavity, 12. Pneumatic push rod, 13. Limiting block, 14. Rubber limiting block, 15. Slide module, 16. Slide seat, 17. Electric telescopic rod, 18. Ionizing air bar, 19. Air intake, 20. Fluororubber inner layer, 21. Silicone middle layer, 24. Ceramic coating outer layer, 22. N35 neodymium iron boron magnetic strip, 23. Epoxy resin encapsulation layer, 25. Sealing gasket, 26. Dust removal structure, 27. Dovetail insert, 28. Dovetail slot. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0016] like Figure 1-3As shown, a film-applying fixture for reducing dust defect rate includes a film-applying plate 10 and an air extraction unit installed at the bottom of the film-applying plate 10. The film-applying plate 10 forms a film-applying cavity 11 that matches the product shape. Air intake ports 19 connected to the air extraction unit are provided on the lower part of the four side walls of the film-applying cavity 11. A dust removal structure 26 is provided on the upper surface of the film-applying plate 10. The dust removal structure 26 includes two sliding table modules 15, two electric telescopic rods 17, and an ionizing air bar 18. The two sliding table modules 15 are respectively installed on opposite sides of the upper surface of the film-applying plate 10. On both sides, two electric telescopic rods 17 are fixedly installed on the slide base 16 of the slide module 15, and the free ends of the two electric telescopic rods 17 are fixedly connected to the two sides of the ion air bar 18, respectively; sealing gaskets 25 are provided on all four side walls of the film-applying cavity 11, and the sealing gaskets 25 are provided with through holes at the positions corresponding to the air inlet 19; the sealing gaskets 25 adopt a three-layer composite structure; pneumatic push rods 12 are installed on both opposite sides of the upper surface of the film-applying plate 10 in the length direction, and limit blocks 13 are installed on the side of the pneumatic push rods 12 facing the film-applying cavity 11. Rubber limit blocks 14 are installed on both opposite sides of the upper surface of the film-applying plate 10 in the width direction. In actual operation, peel off the release paper on the back of the protective film, place the film (adhesive side up) into the film application slot 11 and hold it in place. After the dust removal structure 26 removes dust from the film, align the product to be filmed (film side down) and place it on the film. Start the air extraction unit to remove the air between the film and the product through the air intake. Atmospheric pressure will automatically press the film onto the product. Turn off the air extraction unit and remove the product.

[0017] The sealing gasket 25 comprises a fluororubber inner layer 20, a silicone middle layer 21, and a ceramic coating outer layer 24. Multiple N35 neodymium iron boron magnetic strips 22 are sequentially embedded within the silicone middle layer 21, and an epoxy resin encapsulation layer 23 is provided between adjacent N35 neodymium iron boron magnetic strips 22. The four side walls of the film-applying cavity 11 are made of 316L stainless steel. The thickness of the ceramic coating outer layer 24 is 0.1 mm; the spacing between adjacent N35 neodymium iron boron magnetic strips 22 is 10 mm. This structural design ensures a tight seal between the sealing gasket 25 and the film-applying cavity 11 while protecting the product casing from scratches. The side walls of the film-applying plate 10 form dovetail slots 28, and dovetail inserts 27 matching the dovetail slots 28 are provided on opposite sides of the sealing gasket 25 along its length. This structural design facilitates the disassembly and replacement of the sealing gasket 25, thereby improving maintenance efficiency. When making the sealing gasket 25, a mold is used to cut grooves in the uncured silicone layer to ensure that the N35 neodymium iron boron magnetic strip 22 is embedded at a predetermined spacing after axial magnetization; epoxy resin is injected to form mechanical locking, and anaerobic adhesive is vacuum sprayed and then cured for 24 hours; the fluororubber inner layer 20 and the silicone middle layer 21 are bonded by hot pressing, and modified epoxy resin is added to the interface to enhance the bonding force; a 0.1mm alumina-based ceramic coating is deposited on the silicone surface using a plasma spraying process.

[0018] The extraction unit includes a mesh-like air passage, a main extraction pipe, vacuum solenoid valves, and an extraction pump. One end of the mesh-like air passage is connected to the main extraction pipe, and the other end is connected to various branch extraction pipes. Each branch extraction pipe is connected to a vacuum solenoid valve, and the main extraction pipe is connected to the extraction pump. The extraction pump (such as a Roots vacuum pump) provides a core negative pressure source to the mesh-like air passage through the main extraction pipe. The mesh-like air passage is integrally formed into a metal substrate by laser sintering, and its branch ends are connected to the extraction pipes of each zone. Each branch integrates a vacuum solenoid valve. When the extraction pump is started, gas flows from the suction port of the membrane cavity 11 through the branch pipes into the mesh-like air passage and is finally discharged through the main pipe. The vacuum solenoid valves dynamically open and close the branches based on pressure sensor signals, achieving independent control of the adsorption force in each zone.

[0019] This implementation uses a PLC (Programmable Logic Controller) as the central processing unit, integrating a high-speed I / O module and an analog input module (16-bit ADC precision), and runs a customized control algorithm to achieve time-series linkage of dust removal, positioning, and vacuuming. It is equipped with a touchscreen (HMI) for real-time parameter display.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A film-applying fixture for reducing dust defect rate, comprising a film-applying plate (10) and an air extraction unit installed at the bottom of the film-applying plate (10), wherein the film-applying plate (10) forms a film-applying cavity (11) matching the product shape, and each of the four lower side walls of the film-applying cavity (11) is provided with an air intake (19) connected to the air extraction unit; characterized in that: The upper surface of the film plate (10) is provided with a dust removal structure (26); the dust removal structure (26) includes two sliding modules (15), two electric telescopic rods (17), and an ionizing air bar (18). The two sliding modules (15) are respectively installed on opposite sides of the upper surface of the film plate (10), and the two electric telescopic rods (17) are respectively fixedly installed on the slide base (16) of the sliding module (15). The free ends of the two electric telescopic rods (17) are respectively connected to the slide base (16) of the sliding module (15). The two sides of the ion air bar (18) are fixedly connected; the four side walls of the film-applying cavity (11) are provided with sealing gaskets (25), and the sealing gaskets (25) are provided with through holes at the positions corresponding to the air inlet (19); the sealing gaskets (25) adopt a three-layer composite structure; pneumatic push rods (12) are installed on opposite sides of the upper surface of the film-applying plate (10) along the length direction, and the pneumatic push rods (12) are provided with limit blocks (13) on the side of the film-applying cavity (11) that are close to the pneumatic push rods (12).

2. The film-applying fixture for reducing dust defect rate according to claim 1, characterized in that: The sealing gasket (25) includes a fluororubber inner layer (20), a silicone middle layer (21) and a ceramic coating outer layer (24). Multiple N35 neodymium iron boron magnetic strips (22) are pre-embedded in the silicone middle layer (21) in an orderly manner. An epoxy resin encapsulation layer (23) is provided between two adjacent N35 neodymium iron boron magnetic strips (22). The four side walls of the film-applying cavity (11) are made of 316L stainless steel.

3. The film-applying fixture for reducing dust defect rate according to claim 2, characterized in that: The thickness of the outer layer (24) of the ceramic coating is set to 0.1 mm; the spacing between two adjacent N35 neodymium iron boron magnetic strips (22) is set to 10 mm.

4. The film-applying fixture for reducing dust defect rate according to claim 1, characterized in that: Rubber limiting blocks (14) are installed on both sides of the upper surface of the film plate (10) in the width direction.

5. A film-applying fixture for reducing dust defect rate according to claim 2, characterized in that: The sidewall of the film plate (10) is formed with a dovetail slot (28), and the sealing gasket (25) is provided with dovetail inserts (27) that match the dovetail slot (28) on opposite sides in the length direction.

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