Backlight white strip pasting tool jig
By using negative pressure suction to fix the small white strips in the backlight sticking tooling fixture, the problems of loose and poor fit of the small white strips in traditional tools are solved, and the production efficiency and pasting efficiency of the backlight are improved.
Patent Information
- Application Number
- CN202420945614.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-30
AI Technical Summary
In the structure of the glue-aluminum integrated backlight, the small white strips are easily loosened due to double-sided adhesive pulling during the exit of the traditional fixture, resulting in poor fit and deformation, affecting the production efficiency of the backlight.
Design a backlit white strip tool, which uses negative pressure suction to fix the small white strips. By setting up a suction port, air duct, main air trough, diversion air trough and air holes on the tool, and using yellow high-temperature tape sealing film to ensure small The white strips do not loosen during the bonding process.
It effectively avoids loosening and deformation of the small white strips during the exit process, reduces the bonding rate, and improves the pasting efficiency of the white strips and the production efficiency of the backlight source.
Smart Images
Figure CN222178755U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of backlight module component assembly, in particular to a backlight white strip pasting tooling fixture. Background Art
[0002] The structure of the plastic-aluminum integrated backlight source is as follows Figure 1 As shown, it consists of an integrated plastic-aluminum part (plastic part, aluminum part), a reflective film, a light guide plate, a light strip, a double-sided tape for the light strip, a small white strip, a lower diffusion film, a lower light-enhancing film, an upper light-enhancing film and a light-shielding double-sided tape. The small white strip is a 0.05mm thick white film, and a 0.03mm thick double-sided tape is attached to the back of the small white strip. Sticking it to the top of the light strip can improve the lamp effect, and at the same time increase the utilization rate of light by reflecting light to make the backlight brighter.
[0003] The aluminum sheet needs to be bent into a U-shaped structure to protect the light bar, and the small white strip must be attached to the inner top surface of the U-shaped bending structure to be effective. Due to the thickness of the entire backlight source, the thickness of the U-shaped bending structure is generally between 0.85-0.95mm, which can only accommodate the small white strip, light guide plate and light bar, resulting in the white strip's pasting surface being basically invisible during mounting. Figure 2 As shown, double-sided tape is first pasted on both ends of the fixture, and then the small white strip is pasted on the double-sided tape. The placement machine sends it to the U-shaped structure and sticks it tightly before exiting the fixture. Since the small white strip is relatively soft, the double-sided tape at both ends can easily pull the small white strip loose during the exit of the fixture, causing deformation and warping, which seriously affects the bonding efficiency.
[0004] Utility model patent CN 219153750 U discloses a white strip assembly jig for a U-shaped position of glue and iron, which is provided with a bearing plate protruding relative to the jig body, and a white strip wide edge limiting groove is provided at the junction of the jig body and the bearing plate, so that the white strip can be carried by the bearing plate, and then the white strip is carried by the bearing plate and extended into the U-shaped position of glue and iron, and then the white strip is pasted in the U-shaped position of glue and iron, effectively avoiding wrinkles or bending of the white strip, and ensuring the attachment yield and pasting efficiency of the white strip. Although the jig solves the defects of inconvenient assembly and low yield of the white strip to a certain extent, it still does not solve the problem of deformation and warping of the white strip after degumming. Utility Model Content
[0005] In view of the deficiencies of the above-mentioned prior art, the utility model provides a backlight white strip pasting tooling jig, which has a simple structure and is easy to operate, so that the process of pasting the white strip of the backlight source can be completed on the machine, which can effectively reduce the defective pasting rate and improve the production efficiency of the backlight source.
[0006] The utility model achieves the above-mentioned purpose through the following technical solutions:
[0007] A backlight white strip pasting tooling jig comprises a main body, a pasting plate and a fixing block, wherein the pasting plate is arranged at one side of the main body for placing the small white strip, and the fixing block is arranged at the upper part of the main body for fixing to the bottom plate of a placement machine; an air suction port is arranged on the side wall of the fixing block, an air duct connected to the air suction port is arranged inside the main body, a main air groove is also arranged at the bottom of the main body, the air duct penetrates downward to be connected to the main air groove, a diversion air groove connected to the main air groove is arranged at the bottom of the pasting plate, and an air hole connected to the diversion air groove is also arranged on the pasting plate; a sealing film covering the main air groove and the diversion air groove is also arranged at the bottom of the main body.
[0008] Furthermore, the main body is in the shape of a right-angled trapezoid, and the bonding plate is arranged on one side of the hypotenuse of the main body.
[0009] Furthermore, the pores are evenly distributed on the bonding plate.
[0010] Furthermore, the sealing film is yellow high-temperature adhesive tape.
[0011] Furthermore, the thickness of the yellow high-temperature adhesive tape is 0.05 mm.
[0012] Compared with the prior art, the advantages and effects of the utility model are: compared with the method of sticking white strips with the old jig, the device uses the principle of negative pressure suction to fix the small white strips on the jig, avoiding the problem of the small white strips being pulled loose and causing deformation and warping during the withdrawal of the jig, which can greatly reduce the poor fitting rate and effectively improve the pasting efficiency of the white strips and the production efficiency of the backlight source. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of the plastic-aluminum integrated backlight source.
[0014] Figure 2 This is a schematic diagram of the structure of an old-style fixture.
[0015] Figure 3 The structure of the utility model is shown in FIG. Figure 1 .
[0016] Figure 4 The structure of the utility model is shown in FIG. Figure 2 .
[0017] Figure 5 It is a top view of the utility model.
[0018] Figure 6 It is a bottom view of the utility model.
[0019] Figure number identification: 1. Main body; 2. Laminating plate; 3. Fixing block; 4. Air suction port; 5. Air duct; 6. Main air groove; 7. Diversion air groove; 8. Air hole; 9. Sealing film. DETAILED DESCRIPTION
[0020] The present invention is further described below in conjunction with embodiments, but the present invention is not limited to these embodiments.
[0021] The backlight white strip tooling fixture described in this embodiment is as follows: Figure 3 As shown, it includes a main body 1 in the shape of a right-angled trapezoid, a bonding plate 2 and a fixing block 3. The bonding plate 2 is arranged on one side of the hypotenuse of the main body 1 for placing the small white strips, and the fixing block 3 is arranged on the upper part of the main body 1 for fixing to the bottom plate of the placement machine.
[0022] like Figure 4 , 5 As shown in , 6, an air suction port 4 is provided on the side wall of the fixed block 3, an air duct 5 connected with the air suction port 4 is provided inside the main body 1, a main air groove 6 is also provided at the bottom of the main body 1, the air duct 5 vertically penetrates downward to be connected with the main air groove 6, a diversion air groove 7 connected with the main air groove 6 is provided at the bottom of the bonding plate 2, and 6 air holes 8 distributed at equal distances are also provided on the bonding plate 2, and the diversion air groove 7 is connected with the air holes 8.
[0023] like Figure 3 As shown, a sealing film 9 for covering the main gas groove 6 and the branch gas groove 7 is also provided at the bottom of the main body 1, which plays a sealing role when the exhaust port 4 is opened for exhaust. Preferably, a yellow high-temperature adhesive tape with a thickness of 0.05 mm is used as the sealing film 9.
[0024] The working principle of this embodiment is as follows:
[0025] 1. Use the fixing block 3 to fix the fixture on the SMT machine, connect the exhaust port 4 to the exhaust pipeline, and then place the small white strip on the bonding board 2 to cover the air hole 8 (the side with double-sided tape faces up). At this time, negative pressure is formed in the airway 5, the main air groove 6 and the diversion air groove 7, and the small white strip is firmly sucked on the fixture;
[0026] 2. Start the placement machine, and use this fixture to send the small white strip into the U-groove of the glue-aluminum integrated part for bonding, then turn off the vacuum, exit the fixture, and complete the process of sticking the small white strip.
Claims
1. A backlight white strip tooling fixture, characterized by: The invention comprises a body (1), a bonding plate (2) and a fixing block (3); the bonding plate (2) is arranged on one side of the body (1) for placing a small white strip; the fixing block (3) is arranged on the upper part of the body (1) for fixing to the bottom plate of the placement machine; an air suction port (4) is arranged on the side wall of the fixing block (3); an air passage (5) connected to the air suction port (4) is arranged inside the body (1); a main air groove (6) is also arranged at the bottom of the body (1); the air passage (5) penetrates downward to be connected to the main air groove (6); a shunt air groove (7) connected to the main air groove (6) is arranged at the bottom of the bonding plate (2); an air hole (8) connected to the shunt air groove (7) is also arranged on the bonding plate (2); a sealing film (9) covering the main air groove (6) and the shunt air groove (7) is also arranged at the bottom of the body (1).
2. A backlight white strip tooling fixture according to claim 1, characterized in that: The main body (1) is in the shape of a right-angled trapezoid, and the bonding plate (2) is arranged on one side of the oblique edge of the main body (1).
3. A backlight white strip pasting tooling fixture according to claim 1, characterized in that: The air holes (8) are evenly distributed on the bonding plate (2).
4. A backlight white strip tooling fixture according to claim 1, characterized in that: The sealing film (9) is yellow high-temperature adhesive tape.
5. A backlight white strip pasting tooling fixture according to claim 4, characterized in that: The thickness of the yellow high temperature adhesive tape is 0.05 mm.