Flexible laminating device of membrane switch

Abstract

The utility model belongs to the technical field of membrane switch production, and discloses a membrane switch flexible laminating device which comprises a rack, a workbench, an opening, a fixing frame, a supporting roller, a driving assembly and an adjusting assembly, a lifting frame is vertically arranged on the fixing frame in a sliding mode, a lower pressing roller is horizontally arranged on the lifting frame in a rotating mode, and linkage assemblies are arranged on the two sides of the fixing frame. The linkage assembly comprises a driving belt wheel, a driven gear, a rotating shaft and a driven belt wheel, a connecting base is arranged on the fixing frame, a telescopic rod is horizontally arranged on the connecting base, a tensioning belt wheel is rotationally arranged on the telescopic rod, the telescopic rod is sleeved with a compression spring, and the tensioning belt wheel, the driving belt wheel and the driven belt wheel are connected through a synchronous belt. The supporting roller and the lower pressing roller synchronously and reversely rotate to convey and press the panel, the upper circuit, the isolation layer and the lower circuit, the situation that the lower pressing roller is driven by friction force to rotate is avoided, therefore, the situation that in the pressing process, relative displacement and dislocation of all layers of materials are likely to be generated is avoided, and the product yield and the performance stability are improved.

Description

A flexible lamination device for a membrane switch Technical Field

[0001] This utility model relates to the field of membrane switch manufacturing technology, and in particular to a flexible lamination device for membrane switches. Background Technology

[0002] A membrane switch is an integrated operating system combining button functions, indicating elements, and an instrument panel. It consists of four parts: a panel, an upper circuit, an insulating layer, and a lower circuit. When the membrane switch is pressed, the contacts in the upper circuit deform downwards, making contact with the plates in the lower circuit to conduct electricity. When the finger is released, the contacts in the upper circuit rebound, the circuit breaks, and the circuit triggers a signal. A lamination device is a mechanical device that presses multiple layers of material together. During the production of membrane switches, the panel, upper circuit, insulating layer, and lower circuit need to be bonded together and then pressed and fixed using a lamination device.

[0003] Currently, in the production of membrane switches, workers typically perform initial point-to-point bonding and positioning of the panel, upper circuit, insulating layer, and lower circuit. This stacked material is then placed between two parallel pressure rollers in a laminating device. During the actual pressing process, the drive system only actively rotates one pressure roller. This roller, through friction with the panel surface, propels the stacked material forward, while simultaneously, the friction between the material and the other pressure roller passively drives the latter to rotate. While this single-sided driving lamination method can achieve overall bonding of multiple layers, its reliance on friction transmission easily leads to relative displacement between the layers during pressing. This results in misalignment between the panel, upper circuit layer, insulating layer, and lower circuit layer, severely impacting product yield and performance stability. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a flexible lamination device for a membrane switch.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a flexible lamination device for a membrane switch, comprising a frame, a worktable mounted on the frame, an opening in the center of the worktable, a fixed frame mounted within the opening, a support roller rotatably mounted horizontally on the fixed frame, a drive assembly for driving the support roller to rotate on the fixed frame, a lifting frame slidably mounted vertically on the fixed frame, an adjustment assembly for adjusting the lifting frame's height on the fixed frame, a lower pressure roller rotatably mounted horizontally on the lifting frame, and two supports on both sides of the fixed frame. A linkage assembly that drives the lower pressure roller to rotate in the opposite direction when the support roller rotates includes a drive pulley on the support roller, a driven gear on the lower pressure roller, a horizontally rotatable shaft on the lifting frame, a drive gear and a driven pulley fixedly mounted on the rotating shaft, the drive gear and the driven gear meshing, a connecting seat on the fixed frame, a horizontally mounted telescopic rod on the connecting seat, a tension pulley rotatably mounted on the telescopic rod, a compression spring mounted on the telescopic rod, and the tension pulley, drive pulley and driven pulley connected by a synchronous belt.

[0006] By adopting the above technical solution, a frame, worktable, fixed frame, support roller, lifting frame, lower pressure roller, and linkage assembly are set up. The adjustment assembly adjusts the position of the lifting frame, thereby changing the distance between the lower pressure roller and the support roller to accommodate membrane switches of different thicknesses. The drive assembly drives the support roller to rotate, which in turn drives the drive pulley to rotate, thereby driving the tension pulley and driven pulley to rotate, which in turn drives the rotating shaft and drive gear to rotate. Since the drive gear and driven gear mesh, the rotation of the driven gear drives the lower pressure roller to rotate. When the lifting frame drives the lower pressure roller to rise, the distance between the drive pulley and driven pulley increases, causing the telescopic rod to retract and the position of the tension pulley to move, ensuring the power transmission between the drive pulley and driven pulley. The support roller and lower pressure roller rotate synchronously in opposite directions to transport and press the panel, upper circuit, isolation layer, and lower circuit, avoiding the lower pressure roller from rotating due to friction. This avoids the relative displacement and misalignment between the layers of material that can easily occur during the pressing process, improving product yield and performance stability.

[0007] Furthermore, the telescopic rod includes a fixed tube horizontally disposed on the connecting seat, a sliding rod slidably disposed inside the fixed tube, a mounting seat disposed at the end of the sliding rod away from the connecting seat, a tension pulley rotatably disposed on the mounting seat, and a compression spring sleeved on the rod body of the sliding rod located between the mounting seat and the fixed tube.

[0008] By adopting the above technical solution, a fixed tube, sliding rod, mounting base, and compression spring are set up. The compression spring provides thrust, pushing the mounting base and tension pulley away from the driving pulley and driven pulley, thus ensuring the tension of the synchronous belt.

[0009] Furthermore, the fixing frame includes fixing seats symmetrically arranged in the opening, two fixing rods arranged vertically at intervals on the fixing seats, and a top plate is provided at the upper end of the four fixing rods. The lifting frame includes a lifting plate, and lifting seats are provided on both sides of the lifting plate. Two sliding holes are vertically opened on the lifting seats, and the sliding holes are slidably connected to the corresponding fixing rods.

[0010] Furthermore, both ends of the support roller are concentrically provided with trunnions, the trunnions pass through the fixed seat and are rotatably connected to the fixed seat, the drive pulley is fixedly sleeved on the trunnions, both ends of the pressure roller are concentrically provided with roller shafts, the roller shafts pass through the lifting seat and are rotatably connected to the lifting seat, and the driven gear is fixedly sleeved on the roller shafts.

[0011] By adopting the above technical solution and setting trunnions and roller shafts, the stability of the rotation of the support roller and the lower pressure roller is ensured.

[0012] Furthermore, protective plates are provided on both sides of the top surface of the workbench located on the fixed base.

[0013] By adopting the above technical solution and setting a protective plate, the membrane switch is prevented from contacting the synchronous belt, thereby avoiding damage to the membrane switch caused by the moving synchronous belt.

[0014] Furthermore, the adjustment assembly includes a threaded rod that is vertically rotatably mounted on the lifting plate, the top plate being helically connected to the threaded rod through a threaded hole, and the upper end of the threaded rod passing through the top plate and having a handle.

[0015] By adopting the above technical solution, a threaded rod and a handle are set up. Rotating the handle drives the threaded rod to rotate. When the threaded rod rotates, it moves relative to the top plate, thereby driving the lifting plate, lifting seat, and lower pressure roller to descend.

[0016] Furthermore, the drive assembly includes a fixed block mounted on a fixed frame, a drive motor horizontally mounted on the fixed block, and the output shaft of the drive motor connected to the support roller.

[0017] By adopting the above technical solution, a fixed base and a drive motor are set up, and the drive motor drives the support roller to rotate.

[0018] In summary, this utility model has the following beneficial effects: This application includes a frame, worktable, fixed frame, support roller, lifting frame, lower pressure roller, and linkage assembly. The adjusting assembly adjusts the position of the lifting frame, thereby changing the distance between the lower pressure roller and the support roller to accommodate membrane switches of different thicknesses. The driving assembly drives the support roller to rotate, which in turn drives the drive pulley to rotate, thereby driving the tension pulley and driven pulley to rotate, which in turn drives the rotating shaft and drive gear to rotate. Since the drive gear and driven gear mesh, the driven gear's rotation drives the lower pressure roller to rotate. When the lifting frame raises the lower pressure roller, the distance between the drive pulley and driven pulley increases, causing the telescopic rod to retract and the tension pulley to move, ensuring the transmission of power between the drive pulley and driven pulley. The synchronous counter-rotation of the support roller and lower pressure roller conveys and presses the panel, upper circuit, insulating layer, and lower circuit, avoiding friction-driven rotation of the lower pressure roller. This prevents relative displacement and misalignment between material layers during pressing, improving product yield and performance stability. Attached Figure Description

[0019] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0020] Figure 2 is a structural schematic diagram of the fixing frame and lifting frame according to an embodiment of the present invention;

[0021] Figure 3 is an enlarged view of part A in Figure 2;

[0022] Figure 4 is a structural schematic diagram of the fixing frame according to an embodiment of the present utility model;

[0023] Figure 5 is a structural schematic diagram of the lifting frame according to an embodiment of this utility model.

[0024] In the diagram: 10. Frame; 11. Workbench; 12. Opening; 13. Protective plate; 20. Fixed frame; 21. Support roller; 22. Fixed seat; 23. Fixed rod; 24. Top plate; 25. Trunnion; 30. Drive assembly; 31. Fixed block; 32. Drive motor; 40. Lifting frame; 41. Lower pressure roller; 42. Lifting plate; 43. Lifting seat; 44. Roller shaft; 50. Adjusting assembly; 51. Threaded rod; 52. Handle; 60. Linkage assembly; 61. Drive pulley; 62. Driven gear; 63. Rotating shaft; 64. Driven gear; 65. Driven pulley; 66. Connecting seat; 67. Telescopic rod; 671. Fixed tube; 672. Sliding rod; 673. Mounting seat; 674. Compression spring; 68. Tensioning pulley; 69. Synchronous belt. Detailed Implementation

[0025] 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.

[0026] As shown in Figures 1-5, this application discloses a flexible lamination device for a membrane switch, including a frame 10, a worktable 11, a fixed frame 20, a support roller 21, a lifting frame 40, and a lower pressure roller 41. The worktable 11 is mounted on the frame 10, and an opening 12 is provided in the middle of the worktable 11. The fixed frame 20 is mounted inside the opening 12. The support roller 21 is horizontally rotatably mounted on the fixed frame 20, and the top of the support roller 21 is flush with the top surface of the worktable 11. The fixed frame 20 is also provided with a drive assembly 30 for driving the support roller 21 to rotate. The lifting frame 40 is vertically slidably mounted on the fixed frame 20. The fixed frame 20 is equipped with an adjusting component 50 for adjusting the lifting of the lifting frame 40. The lower pressure roller 41 is horizontally rotatably mounted on the lifting frame 40, parallel to the support roller 21. Both sides of the fixed frame 20 are equipped with linkage components 60 that drive the lower pressure roller 41 to rotate in the opposite direction when the support roller 21 rotates. The adjusting component 50 adjusts the position of the lifting frame 40, thereby changing the distance between the lower pressure roller 41 and the support roller 21 to accommodate membrane switches of different thicknesses. The linkage components 60 cause the support roller 21 and the lower pressure roller 41 to rotate synchronously in opposite directions, conveying and pressing the panel, upper circuit, insulating layer, and lower circuit, ensuring complete adhesion and fixation of each layer. This prevents the lower pressure roller 41 from rotating due to friction, thus avoiding relative displacement and misalignment between the layers during the pressing process, improving product yield and performance stability.

[0027] Specifically, the linkage assembly 60 includes a drive pulley 61 mounted on the support roller 21, a driven gear 62 mounted on the lower pressure roller 41, a horizontally rotatable rotating shaft 63 mounted on the lifting frame 40, a drive gear 64 and a driven pulley 65 fixedly mounted on the rotating shaft 63, the drive gear 64 and the driven gear 62 meshing together, a connecting seat 66 mounted on the fixed frame 20, a horizontally mounted telescopic rod 67 mounted on the connecting seat 66, a tension pulley 68 rotatably mounted on the telescopic rod 67, and a compression spring 674 mounted on the telescopic rod 67. The tension pulley 68, the drive pulley 61 and the driven pulley 65 are connected by a synchronous belt 69. When the support roller 21 rotates, it drives the drive pulley 61 to rotate, thereby driving the tension pulley 68 and the driven pulley 65 to rotate, which in turn drives the rotating shaft 63 and the drive gear 64 to rotate. Since the drive gear 64 meshes with the driven gear 62, the rotation of the driven gear 62 drives the lower pressure roller 41 to rotate. When the lifting frame 40 drives the lower pressure roller 41 to rise, the distance between the driving pulley 61 and the driven pulley 65 increases, causing the telescopic rod 67 to retract and the tension pulley 68 to move, ensuring the transmission of power between the driving pulley 61 and the driven pulley 65. When the lifting frame 40 drives the lower pressure roller 41 to descend, the distance between the driving pulley 61 and the driven pulley 65 decreases, and the compression spring 674 pushes the telescopic rod 67 to extend under the action of its elastic force, causing the tension pulley 68 to move, ensuring the transmission of power between the driving pulley 61 and the driven pulley 65. The tension pulley 68, the driving pulley 61, and the driven pulley 65 are all synchronous belt pulleys.

[0028] In the setup, the fixed frame 20 includes fixed seats 22 symmetrically arranged within the opening 12. Two fixed rods 23 are vertically arranged at intervals on each fixed seat 22, and a top plate 24 is provided at the upper end of all four fixed rods 23. The lifting frame 40 includes a lifting plate 42, with lifting seats 43 on both sides of the lifting plate 42. Two sliding holes are vertically opened on each lifting seat 43, and these holes are slidably connected to the corresponding fixed rods 23 to ensure the stability of the lower pressure roller 41's lifting. Trunnions 25 are concentrically arranged at both ends of the support roller 21. The trunnions 25 pass through the fixed seat 22 and are rotatably connected to it, ensuring the stability of the support roller 21's rotation. The drive pulley 61 is fixedly sleeved on the trunnions 25. Roller shafts 44 are concentrically arranged at both ends of the lower pressure roller 41. The roller shafts 44 pass through the lifting seats 43 and are rotatably connected to them, ensuring the stability of the lower pressure roller 41's rotation. The driven gear 62 is fixedly sleeved on the roller shafts 44.

[0029] In its specific configuration, the telescopic rod 67 includes a fixed tube 671 horizontally mounted on the connecting seat 66. A sliding rod 672 is slidably mounted inside the fixed tube 671. A mounting seat 673 is located at the end of the sliding rod 672 away from the connecting seat 66. A tension pulley 68 is rotatably mounted on the mounting seat 673. A compression spring 674 is sleeved on the rod body of the sliding rod 672 located between the mounting seat 673 and the fixed tube 671. One end of the compression spring 674 is connected to the fixed tube 671, and the other end is connected to the mounting seat 673. The compression spring 674 provides thrust, pushing the mounting seat 673 and the tension pulley 68 away from the driving pulley 61 and the driven pulley 65, ensuring the tension of the synchronous belt 69. Protective plates 13 are provided on both sides of the top surface of the workbench 11, located on the fixed seat 22. The protective plates 13 prevent the membrane switch from contacting the synchronous belt 69, thereby preventing damage to the membrane switch caused by the moving synchronous belt 69.

[0030] The adjusting assembly 50 includes a threaded rod 51 vertically rotatably mounted on the lifting plate 42. The top plate 24 is helically connected to the threaded rod 51 through a threaded hole. The upper end of the threaded rod 51 passes through the top plate 24 and is provided with a handle 52. Rotating the handle 52 drives the threaded rod 51 to rotate. When the threaded rod 51 rotates, it moves relative to the top plate 24, thereby driving the lifting plate 42, the lifting seat 43, and the lower pressure roller 41 to descend. The driving assembly 30 includes a fixed block 31 mounted on the fixed frame 20. A drive motor 32 is horizontally mounted on the fixed block 31. The output shaft of the drive motor 32 is connected to the support roller 21, and the drive motor 32 drives the support roller 21 to rotate.

[0031] The operating principle of the flexible lamination device for a membrane switch in this embodiment is as follows: Based on the thickness of the membrane switch, rotating the handle 52 drives the threaded rod 51 to rotate, adjusting the position of the lifting frame 40 and the lower pressure roller 41. Then, the pre-fixed panel, upper circuit, insulating layer, and lower circuit are placed between the support roller 21 and the lower pressure roller 41. The drive motor 32 is started to drive the support roller 21 to rotate. When the support roller 21 rotates, it drives the drive pulley 61 to rotate, thereby driving the tension pulley 68 and the driven pulley 65 to rotate, which in turn drives the rotating shaft 63 and the drive gear 64 to rotate, causing the driven gear 62 to rotate and drive the lower pressure roller 41 to rotate. The support roller 21 and the lower pressure roller 41 rotate synchronously in opposite directions to transport and press the panel, upper circuit, insulating layer, and lower circuit, ensuring complete adhesion and fixation of each layer. This avoids friction driving the lower pressure roller 41 to rotate, thus preventing relative displacement and misalignment between the layers during the pressing process, improving product yield and performance stability.

[0032] 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 flexible lamination device for a membrane switch, characterized in that: The system includes a frame (10), on which a worktable (11) is mounted. An opening (12) is provided in the center of the worktable (11), and a fixed frame (20) is mounted within the opening (12). A support roller (21) is horizontally rotatably mounted on the fixed frame (20). A drive assembly (30) for driving the support roller (21) to rotate is also mounted on the fixed frame (20). A lifting frame (40) is vertically slidably mounted on the fixed frame (20). An adjustment assembly (50) for adjusting the lifting frame (40) is mounted on the fixed frame (20). A lower pressure roller (41) is horizontally rotatably mounted on the lifting frame (40). Linkage assemblies (60) are provided on both sides of the fixed frame (20) to drive the lower pressure roller (41) to rotate in the opposite direction when the support roller (21) rotates. The linkage assembly (60) includes a drive pulley (61) mounted on a support roller (21), a driven gear (62) mounted on a lower pressure roller (41), a rotating shaft (63) rotatably mounted on a lifting frame (40), a drive gear (64) and a driven pulley (65) fixedly mounted on the rotating shaft (63), the drive gear (64) and the driven gear (62) meshing, a connecting seat (66) mounted on a fixed frame (20), a telescopic rod (67) rotatably mounted on the connecting seat (66), a tension pulley (68) rotatably mounted on the telescopic rod (67), a compression spring (674) mounted on the telescopic rod (67), and the tension pulley (68), the drive pulley (61) and the driven pulley (65) connected by a synchronous belt (69).

2. The flexible lamination device for a membrane switch according to claim 1, characterized in that: The telescopic rod (67) includes a fixed tube (671) horizontally arranged on the connecting seat (66), a sliding rod (672) slidably arranged inside the fixed tube (671), a mounting seat (673) arranged at the end of the sliding rod (672) away from the connecting seat (66), a tension pulley (68) rotatably arranged on the mounting seat (673), and a compression spring (674) sleeved on the rod body of the sliding rod (672) located between the mounting seat (673) and the fixed tube (671).

3. The flexible lamination device for a membrane switch according to claim 1, characterized in that: The fixing frame (20) includes fixing seats (22) symmetrically arranged in the opening (12). Two fixing rods (23) are vertically arranged at intervals on the fixing seats (22). The upper ends of the four fixing rods (23) are all provided with a top plate (24). The lifting frame (40) includes a lifting plate (42). Lifting seats (43) are provided on both sides of the lifting plate (42). Two sliding holes are vertically opened on the lifting seats (43). The sliding holes are slidably connected to the corresponding fixing rods (23).

4. The flexible lamination device for a membrane switch according to claim 3, characterized in that: The support roller (21) has trunnions (25) concentrically arranged at both ends. The trunnions (25) pass through the fixed seat (22) and are rotatably connected to the fixed seat (22). The drive pulley (61) is fixedly sleeved on the trunnions (25). The pressure roller (41) has roller shafts (44) concentrically arranged at both ends. The roller shafts (44) pass through the lifting seat (43) and are rotatably connected to the lifting seat (43). The driven gear (62) is fixedly sleeved on the roller shafts (44).

5. The flexible lamination device for a membrane switch according to claim 4, characterized in that: The top surface of the workbench (11) is provided with protective plates (13) on both sides of the fixed base (22).

6. The flexible lamination device for a membrane switch according to claim 5, characterized in that: The adjustment assembly (50) includes a threaded rod (51) that is vertically rotatably mounted on the lifting plate (42). The top plate (24) is helically connected to the threaded rod (51) through a threaded hole. The upper end of the threaded rod (51) passes through the top plate (24) and is provided with a handle (52).

7. The flexible lamination device for a membrane switch according to claim 1, characterized in that: The drive assembly (30) includes a fixing block (31) disposed on a fixing frame (20), and a drive motor (32) is horizontally disposed on the fixing block (31). The output shaft of the drive motor (32) is connected to the support roller (21).

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