Accurate alignment device for multiple layers of conductive films
The multi-layer conductive film alignment device, controlled by the frame and air source, solves the problem of large quality fluctuations in manual alignment and achieves precise alignment and stable positioning of the conductive film.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU JIAWEIFENG ELECTRONICS CO LTD
- Filing Date
- 2025-04-21
- Publication Date
- 2026-05-12
AI Technical Summary
In the production of small-batch conductive films for keyboards, manual alignment results in significant quality fluctuations, making it difficult to achieve precise alignment of multi-layer conductive films.
The system employs components such as a frame, an air outlet box, an air inlet box, first and second placement plates, and a pneumatic suction cup. By controlling the lifting, movement, and adsorption of the conductive film through an air source, it ensures that the initial position of the multi-layer conductive film is uniform and the final position is stable.
Precise alignment of multilayer conductive films was achieved, improving alignment quality and consistency and reducing reliance on manual operation.
Smart Images
Figure CN224232570U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of conductive film technology, and in particular to a precise alignment device for multilayer conductive films. Background Technology
[0002] Conductive film has various definitions, but it generally refers to the 'multi-layered' thin film in input devices such as keyboards. The keyboard conductive film is one of the core components of a membrane keyboard, primarily used to trigger key signals. It is a circuit structure composed of multiple flexible thin films, where pressing causes the upper and lower layers of circuitry to contact and conduct. A typical keyboard conductive film consists of three flexible thin films: an upper conductive film, a lower conductive film, and an intermediate insulating layer (an insulating film with perforations). When a key is not pressed, the insulating layer blocks the upper and lower circuits; when pressed, the pressure of the keycap deforms the upper film, allowing the conductive lines to contact the lower layer through the perforations in the insulating layer, forming a circuit to trigger the signal. Releasing the key breaks the circuit by restoring the film's elasticity. During manufacturing, precise alignment of the upper conductive film, intermediate insulating layer, and lower conductive film is required to ensure stable key signal transmission.
[0003] Currently, in the production process of conductive films for keyboards that only require small batches, the upper conductive film, the middle insulating layer, and the lower conductive film are manually aligned by workers. This manual operation relies on the experience of the workers, resulting in large fluctuations in alignment quality. Utility Model Content
[0004] To address the aforementioned problems, this invention provides a precise alignment device for multilayer conductive films.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a precise alignment device for a multilayer conductive film, comprising a frame, a worktable at the top of the frame, two openings spaced apart on the worktable, an air outlet box and an air inlet box respectively arranged in the two openings, the bottom of the air outlet box and the air inlet box being connected to connecting pipes, the two connecting pipes being connected to two external air sources respectively, a first placement plate at the top of the air outlet box, the first placement plate having several air outlet holes, and a limit frame also being provided on the first placement plate, a second placement plate at the top of the air inlet box, the second placement plate having several air intake holes, a gantry frame slidably arranged on the worktable, a driving component for driving the gantry frame to slide on the worktable, a lifting frame vertically slidably arranged on the gantry frame, and a pick-and-place component being provided on the lifting frame.
[0006] By adopting the above technical solution, a frame, an air outlet box, an air inlet box, a first placement plate, and a second placement plate are set up. An external air source connected to the air outlet box via a connecting pipe supplies air into the air outlet box, and an external air source connected to the air inlet box via a connecting pipe evacuates the air from the air inlet box. The conductive film is placed on the first placement plate. Air from the air outlet box is ejected from the air outlet hole to the bottom of the conductive film, slightly lifting it and reducing friction between the conductive film and the first placement plate, facilitating its movement on the first placement plate. When the conductive film is placed on the first placement plate, it is moved so that both sides of the conductive film contact the two inner walls of the limiting frame, limiting the position of the conductive film and ensuring its initial uniformity. Through the cooperation of the drive assembly, gantry frame, lifting frame, and pick-and-place assembly, the conductive film on the first placement plate is moved to the second placement plate. The air in the air inlet box is evacuated, creating a negative pressure, which allows external air to enter the air inlet box through the air intake hole. This allows the first conductive film, after being placed on the second placement plate, to adhere to the second placement plate, ensuring its stable position. The conductive film is initially positioned uniformly, and the pick-and-place components are always positioned correctly to ensure precise alignment of the multilayer conductive film and guarantee alignment quality.
[0007] Furthermore, the pick-and-place assembly includes a mounting frame disposed at the bottom of the lifting frame, a plurality of mounting plates slidably disposed on the mounting frame, a plurality of pneumatic suction cups disposed on the mounting plates, and the plurality of pneumatic suction cups being connected to an external air source.
[0008] By adopting the above technical solution, a mounting frame, a mounting plate, and a pneumatic suction cup are set up, and the pneumatic suction cup picks up the conductive film. The mounting plate can slide on the mounting frame, allowing the pneumatic suction cup to adjust its position according to the shape of the conductive film.
[0009] Furthermore, the mounting plate has a strip-shaped hole, the length direction of which is consistent with the length direction of the mounting plate, and several of the pneumatic suction cups are disposed in the strip-shaped hole.
[0010] By adopting the above technical solution, a strip hole is opened on the mounting plate, so that the pneumatic suction cup can be adjusted in position according to the shape of the conductive film.
[0011] Furthermore, a downward-facing connecting groove is provided on one side of the mounting plate. The connecting groove slides in conjunction with the frame body on one side of the mounting frame. A screw hole is horizontally opened on the connecting groove, and a screw rod is spirally installed in the screw hole. A handle is provided at one end of the screw rod.
[0012] By adopting the above technical solution, a connecting groove, a screw rod, and a handle are provided. Rotating the handle drives the screw rod to rotate. When the end of the screw rod abuts against the mounting frame, the positions of the screw rod, the connecting groove, and the mounting plate are fixed.
[0013] Furthermore, the mounting frame has mounting grooves on its inner walls on opposite sides, with the openings of the two mounting grooves facing each other, and the two sides of the mounting plate are slidably connected to the two mounting grooves respectively.
[0014] By adopting the above technical solution and setting the mounting groove, the stability of the mounting plate sliding is ensured.
[0015] Furthermore, the gantry includes two horizontally spaced columns and a top plate connecting the tops of the two columns. Two horizontally spaced grooves are provided on the worktable, and sliding blocks are slidably disposed in the grooves. The sliding blocks are connected to the corresponding columns.
[0016] Furthermore, the drive assembly includes a threaded rod rotatably disposed within a slide groove, the length direction of the threaded rod being consistent with the length direction of the slide groove, one end of the threaded rod passing through the slide groove and being provided with a synchronous pulley, the two synchronous pulleys being connected by a synchronous belt, a drive motor being horizontally disposed on one side of the worktable, and the output shaft of the drive motor being connected to one of the synchronous pulleys.
[0017] By adopting the above technical solution, a drive motor, threaded rods, synchronous pulleys, and synchronous belts are set up. The drive motor drives one of the synchronous pulleys to rotate. Since the two synchronous pulleys are connected by the synchronous belt, the two synchronous belts rotate synchronously, which drives the two threaded rods to rotate synchronously, and the two sliding blocks slide synchronously to drive the gantry frame to move.
[0018] Furthermore, the top plate is provided with two guide holes at intervals, and the top of the lifting frame is provided with two guide rods arranged at intervals. The guide rods are slidably connected to the corresponding guide holes. The upper end of the guide rod is provided with a baffle. The top plate is also provided with an electric push rod vertically. The lower end of the electric push rod passes through the top plate and is connected to the lifting frame.
[0019] By adopting the above technical solution, guide rods, baffles, and electric push rods are set up, and the lifting frame is driven to rise and fall by the electric push rods.
[0020] In summary, this utility model has the following beneficial effects: This application includes a frame, an air outlet box, an air inlet box, a first placement plate, and a second placement plate. An external air source connected to the air outlet box via a connecting pipe supplies air into the air outlet box, and an external air source connected to the air inlet box via a connecting pipe removes air from the air inlet box. The conductive film is placed on the first placement plate, and air from the air outlet box is ejected from the air outlet to the bottom of the conductive film, slightly lifting it and reducing friction between the conductive film and the first placement plate, facilitating its movement on the first placement plate. When the conductive film is placed on the first placement plate, it is moved so that both sides of the conductive film contact the two inner walls of the limiting frame, limiting the position of the conductive film and ensuring its initial uniformity. Through the cooperation of the drive assembly, gantry frame, lifting frame, and pick-and-place assembly, the conductive film on the first placement plate is moved to the second placement plate. The air inside the intake box is drawn out, creating negative pressure. This allows outside air to enter the intake box through the air intake port, ensuring that the first conductive film, once placed on the second placement plate, adheres to the plate and maintains a stable position. The conductive films are initially positioned uniformly, and the placement and removal components consistently position them correctly each time, guaranteeing precise alignment of the multiple conductive films and ensuring alignment quality. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;
[0022] Figure 2 yes Figure 1 Enlarged view of part A;
[0023] Figure 3 This is a schematic diagram of the overall structure from another angle of an embodiment of the present utility model;
[0024] Figure 4 This is a schematic diagram of the structure of the pick-and-place component according to an embodiment of the present invention.
[0025] In the diagram: 10. Frame; 11. Workbench; 12. Slide rail; 13. Sliding block; 20. Air outlet box; 21. Air inlet box; 22. Connecting pipe; 23. First placement plate; 24. Air outlet; 25. Limiting frame; 26. Second placement plate; 27. Air suction hole; 30. Gantry frame; 31. Column; 32. Top plate; 40. Drive assembly; 41. Threaded rod; 42. Synchronous pulley; 43. Synchronous belt; 44. Drive motor; 50. Lifting frame; 51. Guide rod; 52. Baffle; 53. Electric push rod; 60. Pick-up and drop assembly; 61. Mounting frame; 62. Mounting plate; 63. Pneumatic suction cup; 64. Strip hole; 65. Connecting groove; 66. Screw rod; 67. Handle; 68. Mounting groove. Detailed Implementation
[0026] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0027] like Figure 1-4 As shown in the figure, this application discloses a precise alignment device for a multilayer conductive film, including a frame 10, an air outlet box 20, an air inlet box 21, a first placement plate 23, and a second placement plate 26. A workbench 11 is provided on the top of the frame 10, with two openings spaced apart. Both the air outlet box 20 and the air inlet box 21 have top openings and are respectively disposed within the two openings. Connecting pipes 22 are connected to the bottom of both the air outlet box 20 and the air inlet box 21, and the two connecting pipes 22 are respectively connected to two external air sources. Air is supplied to the air outlet box 20 through the external air sources connected to the air outlet box 20 via the connecting pipes 22, and the air in the air inlet box 21 is evacuated through the external air sources connected to the air inlet box 21 via the connecting pipes 22. A first placement plate 23 is provided on the top of the vent box 20. The first placement plate 23 has several vent holes 24 and a limiting frame 25. When the conductive film is placed on the first placement plate 23, air from inside the vent box 20 is ejected from the vent holes 24 to the bottom of the conductive film, slightly lifting it and reducing friction between the conductive film and the first placement plate 23, thus facilitating movement of the conductive film on the first placement plate 23. When the conductive film is placed on the first placement plate 23, moving the conductive film causes its two sides to contact the two inner walls of the limiting frame 25, thus limiting the position of the conductive film. A second placement plate 26 is provided on the top of the air intake box 21. The second placement plate 26 has several air intake holes 27. A gantry frame 30 is slidably mounted on the worktable 11. A drive assembly 40 is provided on the worktable 11 to drive the gantry frame 30 to slide. A lifting frame 50 is vertically slidably mounted on the gantry frame 30. A pick-and-place assembly 60 is provided on the lifting frame 50. Through the cooperation of the drive assembly 40, the gantry frame 30, the lifting frame 50, and the pick-and-place assembly 60, the conductive film on the first placement plate 23 is moved to the second placement plate 26. The air inside the air intake box 21 is drawn away, creating a negative pressure, which allows external air to enter the air intake box 21 through the air intake holes 27. This ensures that the first conductive film, after being placed on the second placement plate 26, can adhere to the second placement plate 26, ensuring stable positioning.
[0028] Specifically, the gantry 30 includes two horizontally spaced columns 31 and a top plate 32 connecting the tops of the two columns 31. Two horizontally spaced grooves 12 are provided on the worktable 11, and sliding blocks 13 are slidably disposed within the grooves 12, connected to the corresponding columns 31. This ensures the stability of the gantry 30's sliding motion. The drive assembly 40 includes a threaded rod 41 rotatably disposed within the groove 12, with the length of the threaded rod 41 aligned with the length of the groove 12. One end of the threaded rod 41 passes through the groove 12 and is fitted with a synchronous pulley 42. The two synchronous pulleys 42 are connected by a synchronous belt 43. A drive motor 44 is horizontally disposed on one side of the worktable 11, and the output shaft of the drive motor 44 is connected to one of the synchronous pulleys 42. The drive motor 44 drives one of the synchronous pulleys 42 to rotate. Since the two synchronous pulleys 42 are connected by the synchronous belt 43, the two synchronous belts 43 rotate synchronously, causing the two threaded rods 41 to rotate synchronously, and the two sliding blocks 13 to slide synchronously, thus moving the gantry 30.
[0029] The top plate 32 has two guide holes spaced apart. The top of the lifting frame 50 has two vertically spaced guide rods 51, which are slidably connected to the corresponding guide holes to ensure the stability of the lifting frame 50 during lifting. A baffle 52 is provided at the upper end of each guide rod 51. An electric push rod 53 is also vertically installed on the top plate 32. The lower end of the electric push rod 53 passes through the top plate 32 and connects to the lifting frame 50, driving the lifting frame 50 to rise and fall.
[0030] During setup, the pick-and-place assembly 60 includes a mounting frame 61 located at the bottom of the lifting frame 50. The lifting frame 50 includes a lifting plate, with four vertical rods arranged in a rectangular array at the bottom of the lifting plate. The lower ends of the vertical rods are connected to the mounting frame 61. Several mounting plates 62 are slidably mounted on the mounting frame 61, and several pneumatic suction cups 63 are mounted on the mounting plates 62. Air pipes are connected to the pneumatic suction cups 63, which are connected to an external air source through the air pipes. The pneumatic suction cups 63 pick up the conductive film. The mounting plates 62 can slide on the mounting frame 61, allowing the pneumatic suction cups 63 to adjust their positions according to the shape of the conductive film. The mounting plates 62 have strip-shaped holes 64, the length of which is consistent with the length of the mounting plates 62. The pneumatic suction cups 63 are all located within the strip-shaped holes 64, allowing the pneumatic suction cups 63 to adjust their positions according to the shape of the conductive film. Specifically, the pneumatic suction cup 63 has two nuts spirally arranged on its body. The two nuts are located on the upper and lower sides of the mounting plate 62, respectively. When adjusting, loosen the upper nut so that the pneumatic suction cup 63 can move within the slot to adjust its position. After the position is adjusted, tighten the upper nut so that the two nuts clamp the mounting plate 62, thereby fixing the position of the pneumatic suction cup 63.
[0031] In the specific configuration, a downward-facing connecting groove 65 is provided on one side of the mounting plate 62. The connecting groove 65 slides with one side of the mounting frame 61. A screw hole is horizontally opened on the connecting groove 65, and a screw rod 66 is spirally installed in the screw hole. A handle 67 is provided at one end of the screw rod 66. Turning the handle 67 drives the screw rod 66 to rotate. When the end of the screw rod 66 abuts against the mounting frame 61, the positions of the screw rod 66, the connecting groove 65, and the mounting plate 62 are fixed. Mounting grooves 68 are opened on the inner walls of opposite sides of the mounting frame 61. The openings of the two mounting grooves 68 face each other. The two sides of the mounting plate 62 are slidably connected to the two mounting grooves 68 respectively, ensuring the stability of the sliding of the mounting plate 62.
[0032] The external air source connected to the air outlet box 20 via the connecting pipe 22 is an air pump; the external air source connected to the air inlet box 21 via the connecting pipe 22 is a vacuum pump; and the external air source connected to the pneumatic suction cup 63 via the air pipe is also a vacuum pump.
[0033] The operating principle of the precise alignment device for a multilayer conductive film in this embodiment is as follows: The lower conductive film is placed on the first placement plate 23. Air from the air outlet box 20 is ejected from the air outlet 24 to the bottom of the conductive film, slightly lifting it. The conductive film is moved so that its two sides contact the two inner walls of the limiting frame 25. Then, the electric push rod 53 is activated to drive the lifting frame 50, mounting frame 61, and pneumatic suction cup 63 to descend and lift the conductive film. The electric push rod 53 then drives the lifting frame 50, mounting frame 61, and pneumatic suction cup 63 to descend and lift the conductive film. The mounting frame 61 and pneumatic suction cup 63 rise, then the drive motor 44 drives the synchronous pulley 42 and threaded rod 41 to rotate, causing the gantry 30 and lifting frame 50 to move, so that the pneumatic suction cup 63 moves above the second placement plate 26. Then, the electric push rod 53 drives the lifting frame 50, mounting frame 61, and pneumatic suction cup 63 to descend, placing the conductive film on the second placement plate 26. The air in the air inlet box 21 is drawn out, forming a negative pressure, so that the conductive film is adsorbed on the second placement plate 26, ensuring stable position. Then, the middle isolation layer and the upper conductive film are transported in sequence.
[0034] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
Claims
1. A precise alignment device for a multilayer conductive film, characterized in that: Includes a frame (10), on which a workbench (11) is provided at the top. The workbench (11) has two openings spaced apart. An air outlet box (20) and an air inlet box (21) with top openings are respectively provided in the two openings. The bottom of the air outlet box (20) and the air inlet box (21) are connected to connecting pipes (22). The two connecting pipes (22) are respectively connected to two external air sources. A first placement plate (23) is provided on the top of the air outlet box (20). The first placement plate (23) has several air outlet holes. (24) A limit frame (25) is also provided on the first placement plate (23). A second placement plate (26) is provided on the top of the air inlet box (21). A plurality of air intake holes (27) are provided on the second placement plate (26). A gantry frame (30) is slidably provided on the workbench (11). A drive assembly (40) for driving the gantry frame (30) to slide is provided on the workbench (11). A lifting frame (50) is vertically slidably provided on the gantry frame (30). A pick-and-place assembly (60) is provided on the lifting frame (50).
2. The precise alignment device for a multilayer conductive film according to claim 1, characterized in that: The pick-and-place assembly (60) includes a mounting frame (61) disposed at the bottom of the lifting frame (50), a plurality of mounting plates (62) are slidably disposed on the mounting frame (61), a plurality of pneumatic suction cups (63) are disposed on the mounting plates (62), and the plurality of pneumatic suction cups (63) are connected to an external air source.
3. The precise alignment device for a multilayer conductive film according to claim 2, characterized in that: The mounting plate (62) has a strip-shaped hole (64) with the length direction of the strip-shaped hole (64) being consistent with the length direction of the mounting plate (62). Several pneumatic suction cups (63) are arranged in the strip-shaped hole (64).
4. The precise alignment device for a multilayer conductive film according to claim 3, characterized in that: The mounting plate (62) has a downward-facing connecting groove (65) on one side. The connecting groove (65) slides with the frame body on one side of the mounting frame (61). A screw hole is horizontally opened on the connecting groove (65). A screw rod (66) is spirally installed in the screw hole. A handle (67) is provided at one end of the screw rod (66).
5. The precise alignment device for a multilayer conductive film according to claim 2, characterized in that: The mounting frame (61) has mounting grooves (68) on its inner walls on opposite sides. The openings of the two mounting grooves (68) are opposite to each other. The mounting plate (62) is slidably connected to the two mounting grooves (68) on both sides respectively.
6. The precise alignment device for a multilayer conductive film according to claim 1, characterized in that: The gantry (30) includes two horizontally spaced columns (31) and a top plate (32) connecting the tops of the two columns (31). The workbench (11) is provided with two horizontally spaced slide grooves (12). A sliding block (13) is slidably disposed in the slide groove (12). The sliding block (13) is connected to the corresponding column (31).
7. The precise alignment device for a multilayer conductive film according to claim 6, characterized in that: The drive assembly (40) includes a threaded rod (41) rotatably disposed in a slide groove (12). The length direction of the threaded rod (41) is consistent with the length direction of the slide groove (12). One end of the threaded rod (41) passes through the slide groove (12) and is provided with a synchronous pulley (42). The two synchronous pulleys (42) are connected by a synchronous belt (43). A drive motor (44) is horizontally disposed on one side of the worktable (11). The output shaft of the drive motor (44) is connected to one of the synchronous pulleys (42).
8. The precise alignment device for a multilayer conductive film according to claim 6, characterized in that: The top plate (32) is provided with two guide holes at intervals. The top of the lifting frame (50) is provided with two guide rods (51) arranged at intervals. The guide rods (51) are slidably connected to the corresponding guide holes. The upper end of the guide rods (51) is provided with a baffle (52). The top plate (32) is also provided with an electric push rod (53) vertically. The lower end of the electric push rod (53) passes through the top plate (32) and is connected to the lifting frame (50).