Folding jig for cooling film of folding screen
By designing the limiting positioning and rolling mechanism of the folding fixture, the problem of layering and extrusion of the heat dissipation film in the folding screen equipment is solved, uniform heat dissipation and stable folding are achieved, and product quality and life are improved.
Patent Information
- Application Number
- CN202422125025.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2034-08-30
AI Technical Summary
The heat dissipation film of existing folding display devices is prone to layering, wrinkling and damage in the bending area, and may extrude optical parts when unfolding, affecting product stability and life.
A folding fixture is designed, including an adsorption platform, a limiting mechanism and a roller pressing mechanism. Through the coordination of the wedge-shaped limiting block and the pressure roller, the pre-bending of the heat dissipation film is achieved, ensuring a specific angle of folding and parallel folding lines, and avoiding overlap and extrusion problems.
It improves the heat dissipation uniformity and use stability of the heat dissipation film, ensures the size and appearance quality of the folding screen, reduces deviations, and extends the service life of the equipment.
Smart Images
Figure CN223199536U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of processing jigs, and in particular relates to a folding jig for a folding screen heat dissipation film. Background Art
[0002] Display devices generate heat during use, requiring a heat dissipation structure to improve heat dissipation performance and prevent damage from overheating. Foldable display devices, such as those found in foldable phones, often utilize two independent primary and secondary heat dissipation films to dissipate heat due to the presence of a bendable zone within the display. The variable form factor of a foldable screen can alter heat dissipation capacity when folded and unfolded, and the internal component distribution is uneven. This creates a more challenging heat dissipation environment on the motherboard and SoC (system-on-chip) side. Excessive heat from the primary heat dissipation film prevents the secondary heat dissipation film from sharing the heat, impacting the heat dissipation efficiency and lifespan of electronic devices like foldable phones. Improved technologies integrate the primary and secondary heat dissipation films into a single unit at the bend zone, but these films are prone to delamination, wrinkling, and even breakage after repeated folding. Furthermore, when the screen is unfolded, the integrated heat dissipation film can press against delicate components within the phone, such as optical components, at the bend zone, causing quality issues and compromising product stability and durability. Therefore, developing new heat dissipation film structures and jigs for fabricating these structures are crucial. Utility Model Content
[0003] In view of the deficiencies in the prior art, the utility model provides a folding jig for a folding screen heat dissipation film.
[0004] In order to achieve the above objectives, the technical solution of the utility model is:
[0005] A folding jig for a folding screen heat dissipation film, the folding screen heat dissipation film comprising two heat dissipation parts and a bridge part connecting the two heat dissipation parts; the folding jig comprises an adsorption platform, a limiting mechanism and a rolling mechanism; the limiting mechanism comprises a wedge-shaped limiting block and a first movable component for driving the wedge-shaped limiting block to move on the adsorption platform; the rolling mechanism comprises a pressure roller and a second movable component for driving the pressure roller to move on the adsorption platform; the adsorption platform has two adsorption areas and a positioning slit located between the two adsorption areas, the two adsorption areas correspondingly adsorb the two heat dissipation parts and make the bridge part bulge upward at the positioning slit, the wedge-shaped limiting block and the pressure roller are respectively located on both sides of the positioning slit and are bent and shaped toward one side of the wedge-shaped positioning block by moving to cooperate.
[0006] Optionally, the two adsorption areas and the positioning slit are arranged along a first horizontal direction, the positioning slit extends in a second horizontal direction, and the first horizontal direction is perpendicular to the second horizontal direction.
[0007] Optionally, the first moving component includes a horizontal sliding unit and a telescopic unit, the telescopic unit is arranged on the horizontal sliding unit, and the wedge-shaped limit block is arranged at the telescopic end of the telescopic unit; the horizontal sliding unit is used to drive the telescopic unit and the wedge-shaped positioning block to move in the second horizontal direction.
[0008] Optionally, the telescopic unit is tilted relative to the adsorption platform so that the wedge-shaped limiting block approaches or moves away from the positioning slit in the first horizontal direction and the vertical direction.
[0009] Optionally, the wedge-shaped limiting block has a horizontal bottom surface and an inclined top surface, and a pointed end formed by the horizontal bottom surface and the inclined top surface faces the positioning slit.
[0010] Optionally, the second moving component includes a guide rail and a sliding bracket, the guide rails are arranged on both sides of the adsorption platform, the pressure roller is installed on the sliding bracket, and the sliding bracket slides with the guide rails to drive the pressure roller to move in the first horizontal direction.
[0011] Optionally, a gap is set between the pressure roller and the adsorption platform.
[0012] Optionally, the two adsorption areas are independently controlled by two vacuum pumping units.
[0013] Optionally, a CCD camera is further included, and the CCD camera is located above the adsorption platform and corresponds to the positioning slit.
[0014] The beneficial effects of the utility model are:
[0015] Through the design of a specific folding jig, the cooperation of a limiting mechanism and a rolling mechanism is used to realize the production of a pre-bending area of the bridging part of the folding screen heat dissipation film. Folding at a specific angle can be achieved, and parallel folding lines can be obtained. The size and appearance meet the quality requirements, avoiding deviations and abnormalities such as the pre-bending area overlapping with the heat dissipation part and the failure of the bending to return to its original position, thereby improving the heat dissipation uniformity and usage stability of the folding screen heat dissipation film. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 Schematic diagram of a top view of a folding screen heat dissipation film according to an embodiment;
[0017] Figure 2 Schematic diagram of the overall structure of the folding fixture;
[0018] Figure 3 It is a schematic diagram of the local structure of the folding jig in a non-working state;
[0019] Figure 4 It is a schematic diagram of the local structure of the folding fixture in working state;
[0020] Figure 5 Schematic diagram of using a folding jig to form a pre-bent area. DETAILED DESCRIPTION
[0021] The following is a further explanation of the present invention in conjunction with the accompanying drawings and specific embodiments. The drawings of the present invention are only for illustration to facilitate understanding of the present invention, and the specific proportions thereof can be adjusted according to design requirements.
[0022] The folding jig of the folding screen heat dissipation film of the embodiment is used for making the integrated heat dissipation film of the folding screen. Figure 1 The folding screen heat dissipation film 1 includes two heat dissipation parts 11 and 12 and a bridging part 13 connecting the two heat dissipation parts 11 and 12. The bridging part 13 is made of flexible materials, such as graphite, graphene and their composite materials, which is used to form a heat tunnel between the two heat dissipation parts to improve the heat dissipation uniformity.
[0023] refer to Figures 2 to 4 The folding jig includes an adsorption platform 2, a limiting mechanism 3, a rolling mechanism 4 and a fixed frame 5 for supporting the above structure. The adsorption platform 2 is fixed on the fixed frame 5. The limiting mechanism 3 includes a wedge-shaped limiting block 31 and a first movable component 32 for driving the wedge-shaped limiting block 31 to move on the adsorption platform 2. The rolling mechanism 4 includes a pressure roller 41 and a second movable component 42 for driving the pressure roller 41 to move on the adsorption platform 2. The surface of the adsorption platform 2 has two adsorption areas 21, 22 and a positioning slit 23 located between the two adsorption areas 21, 22. The two adsorption areas 21, 22 correspondingly adsorb the two heat dissipation parts 11, 12 and make the bridge part 13 bulge upward at the positioning slit 23. The wedge-shaped limiting block 31 and the pressure roller 41 are respectively located on both sides of the positioning slit 23, and are moved to match so that the bulge is bent and shaped toward the side of the wedge-shaped positioning block 31, thereby forming a pre-bending area.
[0024] The two adsorption areas 21 and 22 and the positioning slit 23 of the adsorption platform 2 are arranged along a first horizontal direction X, and the positioning slit 23 extends in a second horizontal direction Y. The first horizontal direction X and the second horizontal direction Y are arranged perpendicularly. The first moving assembly 32 includes a horizontal sliding unit 321 and a telescopic unit 322. The telescopic unit 322 is disposed on the horizontal sliding unit 321, and the wedge-shaped limit block 31 is disposed at the telescopic end of the telescopic unit 322. The horizontal sliding unit 321 is used to drive the telescopic unit 322 and the wedge-shaped positioning block 31 to move in the second horizontal direction Y. The telescopic unit 322 is tilted relative to the surface of the adsorption platform 2 so that the wedge-shaped limit block 31 moves closer to or further away from the positioning slit 23 in the first horizontal direction X and the vertical direction Z. The horizontal sliding unit, for example, includes a first fixed member fixed to the fixed frame 5 and a first movable member that slidably cooperates with the first fixed member. The telescopic unit 322 is mounted on the first movable member so that it can move back and forth relative to the adsorption platform 2 to enter or move away from the operating area in the middle of the positioning slit 23. The telescopic unit 322 includes, for example, a second fixed member fixed to the first movable member and a second movable member that telescopically cooperates with the second fixed member. The wedge-shaped limit block 31 is fixed to the second movable member. After the horizontal sliding unit 321 is operated to cause the wedge-shaped limit block 31 to enter the operating area, the telescopic unit 322 can be operated to press the wedge-shaped limit block 31 downward and approach the positioning slit 23. The wedge-shaped limit block 31 has a horizontal bottom surface 31a and an inclined top surface 31b. The pointed end formed by the horizontal bottom surface 31a and the inclined top surface 31b faces the positioning slit 23.
[0025] The second moving assembly 42 includes guide rails 421 and sliding brackets 422. The guide rails 421 are provided on both sides of the adsorption platform 2. The pressure roller 41 is mounted on the sliding brackets 422. The sliding brackets 422 slidably cooperate with the guide rails 421 to drive the pressure roller 41 to move in the first horizontal direction X, toward or away from the positioning slit 23. A gap is provided between the pressure roller 41 and the adsorption platform 2, meaning that the pressure roller 41 does not act on the adsorption platform 2. Instead, the pressure roller 41 cooperates with the inclined top surface 31b of the wedge-shaped stopper 31.
[0026] The two adsorption areas 21 and 22 are independently controlled by two vacuum pumping units (not shown in the figure). During operation, the folding screen heat dissipation film 1 to be processed is placed on the adsorption platform 2 and positioned with the positioning slit 23. For example, after the edge of one heat dissipation part 11 is flush with the edge of one side of the positioning slit 23, the vacuum pumping unit of the adsorption area 21 is turned on to realize vacuum adsorption on one side, and the other heat dissipation part 12 is moved so that its edge is flush with the edge of the other side of the positioning slit 23. The vacuum pumping unit of the adsorption area 22 is turned on to realize vacuum adsorption on the other side, so that the bridge part 13 is located above the positioning slit 23 and forms a bulge. Figure 2In the state shown, the first moving assembly 32 is manipulated to make the pointed end of the wedge-shaped positioning block 31 approach and abut against the bottom end of one side of the protrusion, and the second moving assembly 42 is manipulated to move the pressure roller 41 from the other side to Figure 3 In the state shown, the pressing roller 41 drives the raised bridge portion 13 to the inclined top surface 31b of the wedge-shaped positioning block 31 and presses it to form a Z-shaped fold, as shown in FIG. Figure 5 As shown, a pre-bent area 13a is formed. The wedge-shaped positioning block 31 cooperates with the pressure roller 41 to achieve a specific angle of pre-bend, preventing issues such as the bridge portion 13 overlapping the heat dissipation portion and failing to fully recover after bending. This arrangement effectively ensures that dimensional and appearance accuracy meet requirements, achieves parallel fold lines, reduces deviation, and improves product quality.
[0027] The folding screen heat dissipation film with a pre-bent area of the bridging part realizes the function of bending allowance when used in, for example, folding mobile phones. When the folding screen is unfolded, it can effectively avoid quality abnormalities caused by the bridging part squeezing optical parts, etc.
[0028] The first movable assembly 31 and the second movable assembly 41 can be driven by a motor, manually controlled, or automatically controlled by a control system. Conventional structures that can achieve sliding or telescopic fit are applicable to the present invention, without limitation. Furthermore, a CCD camera 6 can be included. The CCD camera 6 is arbitrarily mounted on the fixed frame 5, positioned above the adsorption platform 2 and corresponding to the location of the positioning slit 23. The CCD camera 6, in conjunction with a display screen, can be used to observe and monitor the folding effect in real time.
[0029] The above embodiments are only used to further illustrate a folding jig for a folding screen heat dissipation film of the present invention, but the present invention is not limited to the embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.
Claims
1. A folding jig for a folding screen heat dissipation film, characterized by: The folding screen heat dissipation film includes two heat dissipation parts and a bridge part connecting the two heat dissipation parts; the folding jig includes an adsorption platform, a limiting mechanism and a rolling mechanism; the limiting mechanism includes a wedge-shaped limiting block and a first movable component for driving the wedge-shaped limiting block to move on the adsorption platform; the rolling mechanism includes a pressure roller and a second movable component for driving the pressure roller to move on the adsorption platform; the adsorption platform has two adsorption areas and a positioning slit located between the two adsorption areas. The two adsorption areas correspondingly adsorb the two heat dissipation parts and make the bridge part bulge upward at the positioning slit. The wedge-shaped limiting block and the pressure roller are respectively located on both sides of the positioning slit and are bent and shaped toward one side of the wedge-shaped positioning block by moving to match.
2. The folding jig for the folding screen heat dissipation film according to claim 1, characterized in that: The two adsorption areas and the positioning slit are arranged along a first horizontal direction, the positioning slit extends in a second horizontal direction, and the first horizontal direction is perpendicular to the second horizontal direction.
3. The folding jig for the folding screen heat dissipation film according to claim 2, characterized in that: The first moving assembly includes a horizontal sliding unit and a telescopic unit. The telescopic unit is arranged on the horizontal sliding unit, and the wedge-shaped limiting block is arranged at the telescopic end of the telescopic unit. The horizontal sliding unit is used to drive the telescopic unit and the wedge-shaped positioning block to move in the second horizontal direction.
4. The folding jig for the folding screen heat dissipation film according to claim 3, characterized in that: The telescopic unit is tilted relative to the adsorption platform so that the wedge-shaped limiting block approaches or moves away from the positioning slit in the first horizontal direction and the vertical direction.
5. The folding jig for the folding screen heat dissipation film according to claim 1, characterized in that: The wedge-shaped limiting block has a horizontal bottom surface and an inclined top surface, and the pointed end formed by the horizontal bottom surface and the inclined top surface faces the positioning slit.
6. The folding jig for the folding screen heat dissipation film according to claim 2, characterized in that: The second moving assembly includes guide rails and sliding brackets. The guide rails are arranged on both sides of the adsorption platform. The pressure roller is installed on the sliding brackets. The sliding bracket slides with the guide rails to drive the pressure roller to move in the first horizontal direction.
7. The folding jig for the folding screen heat dissipation film according to claim 1, characterized in that: A gap is provided between the pressing roller and the adsorption platform.
8. The folding jig for the folding screen heat dissipation film according to claim 1, characterized in that: The two adsorption areas are independently controlled by two vacuum pumping units.
9. The folding jig for the folding screen heat dissipation film according to claim 1, characterized in that: It also includes a CCD camera, which is located above the adsorption platform and corresponds to the positioning slit.