UV film sticking machine

Abstract

The invention relates to the technical field of UV film pasting, and particularly discloses a UV film pasting machine which comprises a feeding frame, a winding roller is rotationally arranged in the feeding frame, a UV film is wound on the winding roller, a heating table is arranged on one side of the feeding frame, an electric heating wire is arranged in the heating table, a film pressing roller is arranged above the heating table, and an electric heating rod is arranged in the film pressing roller in the axial direction. And the shore hardness A of the surface of the film pressing roller is greater than or equal to 40 degrees and less than or equal to 50 degrees. Compared with the prior art, the electric heating rod is arranged in the film pressing roller, the surface of the UV film is heated while the film pressing roller is used for pressing the UV film, the flowability of UV glue is improved, and therefore the attaching capacity is enhanced, and bubbles are reduced; and through the setting of the hardness of the film pressing roller, the UV film is rolled, meanwhile, the film can be pasted on an uneven carrier plate, bubbles are further reduced, and the product quality is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of UV film laminating, and in particular discloses a UV film laminating machine. Background Art

[0002] Tape cutting machine is also called Tape Saw cutting machine, which is currently mainly used for wafer cutting. However, with the development of Flip-ChipBall Grid Array (FCBGA) packaging substrate technology (hereinafter referred to as FCBGA substrate), TapeSaw cutting machine has also begun to be used in FCBGA substrate cutting. The entire cutting process is UV film → cutting → cleaning (drying) → UV degumming → sorting. Among them, UV film, that is, ultraviolet curing film, is a protective film that can be quickly cured after ultraviolet irradiation. It has anti-scratch, explosion-proof, anti-fingerprint and other functions. UV film laminating machine is needed in UV film laminating to accurately attach the UV film to the surface of the wafer and cure it by ultraviolet light to achieve the purpose of protecting the screen. The quality of UV film is one of the important factors affecting the quality of the finished product after cutting.

[0003] The original UV film laminating machine was designed for wafer laminating processing. Since the wafer has good thermal conductivity, the heating is only designed under the heating table. The electric heating wire is used to heat the wafer on the heating table, and then the UV film is pressed tightly onto the wafer using a rubber film pressing roller, and then irradiated with ultraviolet light.

[0004] When applying film to FCBGA substrate, because both sides of the FCBGA substrate have graphic designs, there is a 15um height difference between the UV film and the substrate, which makes the UV film unable to fit the FCBGA substrate. Therefore, bubbles are easily generated during film application, resulting in poor film application. Film bubbles will also cause dust residue and UV glue residue during cutting, further affecting product quality. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the present invention provides a UV film laminating machine to solve the problem that bubbles are easily generated when laminating a FCBGA substrate, resulting in poor laminating and affecting product quality.

[0006] To achieve the above object, the technical solution of the present invention is: A UV film laminating machine includes a loading rack, a winding roller is rotatably arranged in the loading rack, a UV film is wound on the winding roller, a heating platform is arranged on one side of the loading rack, an electric heating wire is arranged in the heating platform, a film pressing roller is arranged above the heating platform, and an electric heating rod is arranged in the film pressing roller along the axial direction; the Shore hardness of the film pressing roller surface is A, 40 degrees ≤ A ≤ 50 degrees. By arranging the electric heating rod in the film pressing roller, the UV film surface is heated while the film pressing roller is used to press the UV film, thereby improving the fluidity of the UV glue, thereby enhancing the adhesion ability and reducing bubbles; by setting the hardness of the film pressing roller, while ensuring the rolling of the UV film, it is conducive to laminating the film on an uneven carrier, further reducing bubbles and ensuring product quality.

[0007] Preferably, the Shore A hardness of the film pressing roller surface is 45 degrees. The film pressing roller has the best effect of rolling the UV film.

[0008] Preferably, the surface temperature T of the laminating roller is 20° C. ≤ T ≤ 75° C. The surface temperature of the laminating roller can be controlled by an electric heating rod according to different specifications of UV films to ensure the film laminating effect.

[0009] Preferably, two film guide rollers are rotatably arranged in the loading rack; the loading rack is in the shape of a box with an upper opening; a film outlet is arranged on the right side of the loading rack; a bracket is hinged on the loading rack; a film pressing roller is rotatably arranged on the fixed rack; the fixed rack is slidably arranged on the bracket; a handle is fixedly arranged on the fixed rack. The hinged bracket is convenient for pulling the UV film out of the loading rack to cover the FCBGA carrier board, and then rotating the bracket to press the film pressing roller on the UV film.

[0010] Preferably, the bracket is arranged in a concave-shaped frame as a whole; both side plates of the bracket are hinged on the loading rack; the fixed frame is arranged in an inverted concave-shaped frame as a whole; sliding grooves are arranged on both side walls of the fixed frame; a slide table is arranged on the bracket; the slide table is arranged in the slide groove; the film pressing roller is rotatably arranged on the fixed frame through a bearing.

[0011] Preferably, the electric heating rod is arranged in the film pressing roller through bearing 2; sliders are arranged at both ends of the electric heating rod; and the sliders are slidably arranged on the bracket. By setting bearing 1 and bearing 2, it can be ensured that while the film pressing roller rolls and compacts the UV film, the electric heating rod in the film pressing roller can translate with the film pressing roller, which is convenient for connecting the two ends of the electric heating rod to an external power source.

[0012] Preferably, the slider is in a rectangular shape as a whole; the electric heating rod passes through the slider; a clearance groove is provided on the bracket; and the slider is slidably arranged in the clearance groove, so as to further ensure the stability of the translation of the two ends of the electric heating rod.

[0013] Preferably, a limit roller is rotatably arranged on the bracket; the limit roller is arranged between the film pressing roller and the loading rack, and can press down the edge of the UV film to ensure that the UV film fits the FCBGA carrier board.

[0014] Preferably, both sides of the heating platform are equipped with limit platforms to limit the rotation arc of the support on the loading rack to avoid excessive downward pressure of the film pressing roller and damage to the UV film.

[0015] The beneficial effects of the present invention are: By setting an electric heating rod in the film pressing roller, the film pressing roller can be used to press the UV film while heating the surface of the UV film, thereby improving the fluidity of the UV glue, thereby enhancing the adhesion ability and reducing bubbles; by setting the hardness of the film pressing roller, while ensuring the rolling of the UV film, it is beneficial to paste the film on an uneven carrier, further reducing bubbles and ensuring product quality. By setting bearings 1 and 2, it can be ensured that while the film pressing roller rolls and compacts the UV film, the electric heating rod in the film pressing roller can move horizontally with the film pressing roller, making it convenient to connect the two ends of the electric heating rod to an external power supply. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the structure of the support of the present invention after rotating on the loading rack; Figure 3 It is a cross-sectional structural schematic diagram of the present invention; Figure 4 This is a schematic diagram of the structure of the present invention after removing the loading rack; Figure 5 It is a schematic cross-sectional view of the film pressing roller and the electric heating rod of the present invention.

[0017] Description of reference numerals: 1-loading rack, 2-winding roller, 3-heating table, 4-film pressing roller, 5-electric heating rod, 6-film guide roller, 7-bracket, 8-fixed frame, 9-bearing 1, 10-bearing 2, 11-slider, 12-limiting roller; 101-film outlet; 301-limiting platform; 701-allowing groove, 702-sliding platform; 801-handle, 802-sliding groove. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0019] like Figure 1-5 As shown, a UV film laminating machine comprises a loading rack 1, a winding roller 2 is rotatably arranged in the loading rack 1, a UV film is wound on the winding roller 2, and two film guide rollers 6 are rotatably arranged in the loading rack 1; the loading rack 1 is generally in the shape of a box with an upper end opening; a film outlet 101 is arranged on the right side of the loading rack 1; the UV film is pulled out from the winding roller 2, passes around the two film guide rollers 6 in an S shape, and then is pulled out from the film outlet 101; a bracket 7 is hinged on the loading rack 1; the bracket 7 is generally in the shape of a concave frame; both side plates of the bracket 7 are hinged on the loading rack 1, so that the UV film can be pulled out from the loading rack 1 and covered with the FCBGA carrier board, and then the bracket 7 is rotated to press the film pressing roller 4 on the UV film; the film pressing roller 4 is rotatably arranged on the fixing rack 8; the fixing rack 8 is slidably arranged on the bracket 7. A handle 801 is fixedly arranged on the fixing rack 8. The fixing frame 8 is in the shape of an inverted U-shaped frame; both side walls of the fixing frame 8 are provided with slide grooves 802; the bracket 7 is provided with a slide table 702; the slide table is arranged in the slide groove; In the above arrangement, bearings 19 are provided at both ends of the film pressing roller 4, and the outer ring of the bearing 19 is arranged in the through hole on the fixed frame 8. An electric heating rod 5 is axially arranged in the film pressing roller 4; the electric heating rod 5 is arranged in the film pressing roller 4 through bearing 2 10; sliders 11 are provided at both ends of the electric heating rod 5; the slider 11 is slidably arranged on the bracket 7. The slider 11 is arranged in a rectangular shape as a whole; the electric heating rod 5 is arranged through the slider 11; a clearance groove 701 is arranged on the bracket 7; the slider 11 is slidably arranged in the clearance groove 701; and the stability of the translation of the two ends of the electric heating rod 5 is further ensured. Through the arrangement of bearings 1 9 and bearings 2 10, it can be ensured that while the film pressing roller 4 rolls and compacts the UV film, the electric heating rod 5 in the film pressing roller 4 can translate with the film pressing roller 4, which is convenient for the two ends of the electric heating rod 5 to be connected to an external power supply. In order to press down the edge of the UV film and ensure that the UV film fits the FCBGA carrier, a limit roller 12 is rotatably provided on the bracket 7; the limit roller 12 is arranged between the film pressing roller 4 and the loading rack 1. In order to further ensure the stability of the external power supply at both ends of the electric heating rod 5, the slider 11 is key-connected to the electric heating rod 5.

[0020] A heating platform 3 is arranged on one side of the loading rack 1, and an electric heating wire is arranged inside the heating platform 3. In order to limit the rotation arc of the bracket 7 on the loading rack 1, avoid excessive downward pressure of the film pressing roller 4, and avoid damaging the UV film, limit platforms 301 are arranged on both sides of the heating platform 3 to cooperate with the bracket 7.

[0021] Among them, the Shore hardness A of the surface of the film pressing roller 4 is 40 degrees ≤ A ≤ 50 degrees. Preferably, the Shore hardness A of the surface of the film pressing roller 4 is 45 degrees. In other alternative embodiments, the Shore hardness A of the surface of the film pressing roller 4 is 40 degrees or 50 degrees. It is possible to increase the ductility of the surface of the film pressing roller 4 while ensuring the rolling of the UV film, which is conducive to film pasting on uneven carriers, further reducing bubbles and ensuring product quality. According to different specifications of UV films, the heating temperature of the electric heating rod 5 is controlled to control the surface temperature T of the film pressing roller 4, 20℃≤T≤75℃, to ensure the film pasting effect.

[0022] When in use, the FCBGA carrier is placed on the upper surface of the heating table 3, the bracket 7 is rotated around the hinge between the bracket 7 and the loading rack 1, the electric heating wire and the electric heating rod 5 of the heating table 3 are energized, and the UV film on the winding roller 2 is manually pulled out from the film outlet 101 to the top of the FCBGA carrier to cover the FCBGA carrier, and then the bracket 7 is rotated by hand, and the limiting roller 12 presses the UV film on the edge of the heating table 3, and the handle 801 is held by hand to drive the fixed frame 8 to slide on the bracket 7, and the UV film is rolled by the film pressing roller 4 on the fixed frame 8, and the electric heating rod 5 is translated to ensure the stability of the wiring at both ends and avoid entanglement; by arranging the electric heating rod 5 in the film pressing roller 4, the UV film is pressed by the film pressing roller 4, and the surface of the UV film is heated to improve the fluidity of the UV glue, thereby enhancing the adhesion ability and reducing bubbles; by setting the hardness of the film pressing roller 4, while ensuring the rolling of the UV film, it is conducive to film pasting on an uneven carrier, further reducing bubbles and ensuring product quality.

[0023] Although the present invention has been described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, a person of ordinary skill in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions shall be within the scope of the present invention. Any person of ordinary skill in the art may easily think of changes or substitutions within the technical scope disclosed by the present invention, and these shall be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A UV film laminating machine, comprising a loading rack (1), a winding roller (2) rotatably arranged inside the loading rack (1), a UV film being wound on the winding roller (2), a heating platform (3) being arranged on one side of the loading rack (1), an electric heating wire being arranged inside the heating platform (3), and a film pressing roller (4) being arranged above the heating platform (3), characterized in that: An electric heating rod (5) is arranged axially inside the film pressing roller (4); the surface of the film pressing roller (4) has a Shore A hardness of 40 degrees ≤ A ≤ 50 degrees.

2. The UV film laminating machine according to claim 1, characterized in that: The surface hardness of the laminating roller (4) is Shore A = 45 degrees.

3. The UV film laminating machine according to claim 2, characterized in that: The surface temperature T of the film pressing roller (4) is 20°C ≤ T ≤ 75°C.

4. The UV film laminating machine according to claim 3, characterized in that: Two film guide rollers (6) are rotatably arranged in the loading rack (1); the loading rack (1) is in the shape of a box with an opening at the top; a film outlet (101) is arranged on the right side of the loading rack (1); a bracket (7) is hingedly connected to the loading rack (1); the film pressing roller (4) is rotatably arranged on the fixed rack (8); the fixed rack (8) is slidably arranged on the bracket (7); and a handle (801) is fixedly arranged on the fixed rack (8).

5. The UV film laminating machine according to claim 4, characterized in that: The bracket (7) is configured as a concave-shaped frame; both side plates of the bracket (7) are hinged to the loading frame (1); the fixed frame (8) is configured as an inverted concave-shaped frame; both side walls of the fixed frame (8) are provided with slide grooves (802); a slide table (702) is provided on the bracket (7); the slide table is arranged in the slide groove; and the film pressing roller (4) is rotatably arranged on the fixed frame (8) via a bearing 1 (9).

6. The UV film laminating machine according to claim 5, characterized in that: The electric heating rod (5) is arranged in the film pressing roller (4) via a second bearing (10); sliders (11) are arranged at both ends of the electric heating rod (5); and the sliders (11) are slidably arranged on the bracket (7).

7. The UV film laminating machine according to claim 6, characterized in that: The slider (11) is arranged in a rectangular parallelepiped shape as a whole; the electric heating rod (5) is arranged to penetrate the slider (11); a clearance groove (701) is arranged on the bracket (7); and the slider (11) is slidably arranged in the clearance groove (701).

8. The UV film laminating machine according to claim 7, characterized in that: A limit roller (12) is rotatably arranged on the bracket (7); the limit roller (12) is arranged between the film pressing roller (4) and the loading rack (1).

9. The UV film laminating machine according to claim 4, characterized in that: Limiting platforms (301) are provided on both sides of the heating platform (3) in coordination with the bracket (7).

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