Tension adjusting device for FFC production

Abstract

The utility model relates to a tension adjusting device for FFC (flexible flat cable) production, the tension adjusting device comprises a fixed seat, a lifting seat, a linear reciprocating driving part and a jacking roller, the fixed seat and the lifting seat are of groove-shaped structures, notches of the fixed seat and the lifting seat are vertically and upwards arranged, and the outer peripheral side of the lifting seat and the inner peripheral side of the fixed seat are arranged in a sliding manner; the linear reciprocating driving part is fixedly arranged on the fixed seat, and the driving end of the linear reciprocating driving part is fixedly connected with the lifting seat; the jacking roller is arranged at the notch of the lifting seat, the jacking roller is rotationally connected with the lifting seat, and the jacking roller is used for abutting against the flat copper wire. In the application, the jacking roller jacks the flat copper wire, so that the purpose of adjusting the flat copper wire is achieved, the tension stability of the flat copper wire is maintained, the accuracy of the fitting position of the flat copper wire is improved, and the defective rate of the FFC is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of FFC flexible flat cable production equipment, and in particular to a tension adjustment device for FFC production. Background Art

[0002] Flexible Flat Cable (FFC) is a cable made by laminating PET insulation material with extremely thin flat copper wire. The flat copper wire is placed between two layers of insulating sheets, which cover the flat copper wire. The laminating machine used in cable production heat-bonds the two insulating sheets together, thereby securing the flat copper wire between the two insulating sheets and forming the flexible flat cable (FFC).

[0003] Flexible flat cable (FFC) has the advantages of being soft, easy to bend and fold, thin, small, simple to connect, easy to disassemble, and easy to solve electromagnetic shielding (EMI). It is widely used in the connection between various printer print heads and motherboards, and for signal transmission and connection of plotters, scanners, copiers, audio equipment, LCD appliances, fax machines, various DVD players and other products.

[0004] In existing technology, flat copper wire is rolled and unwound before being conveyed between two insulating sheets via conveyor rollers to bond the wire to the sheets. During this process, the wire's tension can change, affecting its transport and shifting its bonding position, increasing the defective rate of FFCs. Utility Model Content

[0005] In order to maintain the stability of the tension of the flat copper wire and reduce the defective rate of FFC, the present application provides a tension adjustment device for FFC production.

[0006] This application provides a tension adjustment device for FFC production, which adopts the following technical solution:

[0007] A tension adjustment device for FFC production, wherein the FFC laminating machine is provided with a tension detector for detecting the tension of the flat copper wire;

[0008] The tension adjustment device is arranged on the side of the laminating machine close to the flat copper wire feed material, and the tension adjustment device includes a fixed seat, a lifting seat, a linear reciprocating drive member and a lifting roller. The fixed seat and the lifting seat are both groove-type structures, and the notches of the fixed seat and the lifting seat are both arranged vertically upward. The outer peripheral side of the lifting seat and the inner peripheral side of the fixed seat are slidingly arranged, and the sliding direction of the lifting seat is vertical; the linear reciprocating drive member is fixed on the fixed seat, and the driving end of the linear reciprocating drive member is fixedly connected to the lifting seat; the lifting roller is arranged at the notch of the lifting seat, and the lifting roller is rotatably connected to the lifting seat. The lifting roller is used to abut against the flat copper wire, and the linear reciprocating drive member drives the lifting roller to move according to the detection data of the tension detector.

[0009] By adopting the above technical solution, the tension detector on the FFC laminating machine detects the tension change of the flat copper wire and transmits the detection data to the background controller. The background controller then drives the driving end of the linear reciprocating drive member to move, so that the lifting roller lifts the flat copper wire, thereby achieving the purpose of adjusting the flat copper wire, maintaining the stability of the tension of the flat copper wire, and improving the accuracy of the laminating position of the flat copper wire, so as to reduce the defective rate of FFC.

[0010] Optionally, a guide roller is further included, which is arranged at the notch of the fixed seat, and both ends of the guide roller are rotatably connected to the fixed seat. The guide roller is arranged on the side of the lifting seat close to the direction of the flat copper wire feeding.

[0011] By adopting the above technical solution, a guide roller is set in the groove of the fixed seat, so as to utilize the friction between the guide roller and the flat copper wire to further increase the tension of the flat copper wire and further improve the accuracy of the fitting position of the flat copper wire, so as to reduce the defective rate of FFC.

[0012] Optionally, a magnetic powder brake is further included, which is fixed on the fixing seat and is used to drive the guide roller to rotate.

[0013] By adopting the above technical solution, the magnetic powder brake, a device operating on electromagnetic principles, adjusts torque transmission by controlling the flow of magnetic powder, thereby achieving precise control of tension. Specifically, by adjusting the rotation of the guide roller, the magnetic powder brake can adjust the tension of the flat copper wire without affecting the production line speed, ensuring accurate conveying of the flat copper wire and improving the yield rate of FFC.

[0014] Optionally, the outer periphery of the lifting roller is provided with a first rubber sleeve, and the first rubber sleeve is used to abut against the flat copper wire.

[0015] By adopting the above technical solution, by arranging the second rubber sleeve on the outer periphery of the lifting roller, there is a large friction force between the second rubber sleeve and the flat copper wire, so as to improve the adjustment effect of the tension adjustment device on the flat copper wire.

[0016] Optionally, a plurality of limiting rings are provided on the outer circumference of the first rubber sleeve, and the limiting rings are integrally formed with the first rubber sleeve; the plurality of limiting rings are arranged at intervals along the length direction of the first rubber sleeve, and the flat copper wire is arranged between two limiting rings.

[0017] By adopting the above technical solution, when multiple flat copper wires are conveyed together, the limiting ring separates the flat copper wires; thus, when the lifting roller moves vertically to change the tension of the flat copper wire, the risk of the flat copper wire being deflected can be reduced.

[0018] Optionally, it also includes a tensioning roller and a compression deformation member, the tensioning roller is arranged at the slot of the fixed seat, the two ends of the tensioning roller are rotatably connected to the fixed seat, and the tensioning roller is arranged between the guide roller and the lifting seat; the compression deformation member is sleeved on the outer periphery of the tensioning roller, and the compression deformation member is used to abut against the flat copper wire.

[0019] By adopting the above technical solution, by arranging a tensioning roller between the guide roller and the lifting roller, when the flat copper wire is squeezed by the compression deformation part, the compression deformation part will continue to exert force on the flat copper wire under the action of its own elastic deformation, thereby maintaining the tension of the flat copper wire.

[0020] Optionally, the compression deformation member is a sponge.

[0021] By adopting the above technical solution, the sponge has a greater deformation ability and is conducive to maintaining the tension of the flat copper wire.

[0022] Optionally, it further includes a guide bar, which is vertically arranged and fixed to the inner side wall of the fixed seat. The guide bar is arranged on both sides of the lifting seat, and the guide bar abuts against the lifting seat.

[0023] By adopting the above technical solution and arranging guide bars on both sides of the lifting seat, the stability of the vertical sliding of the lifting seat is further improved.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. The tension detector on the FFC laminating machine detects the tension change of the flat copper wire and transmits the detection data to the background controller. The background controller then drives the driving end of the linear reciprocating drive member to move, so that the lifting roller lifts the flat copper wire, thereby achieving the purpose of adjusting the flat copper wire, maintaining the stability of the flat copper wire tension, improving the accuracy of the flat copper wire laminating position, and reducing the defective rate of FFC;

[0026] 2. The magnetic powder brake is a device that operates on electromagnetic principles. It regulates torque transmission by controlling the flow of magnetic powder, thereby achieving precise control of tension. Specifically, by adjusting the rotation of the guide roller, the magnetic powder brake can adjust the tension of the flat copper wire without affecting the production line speed, ensuring accurate conveying of the flat copper wire and improving the yield rate of FFC.

[0027] 3. When multiple flat copper wires are conveyed together, the limiting ring separates the flat copper wires, thereby reducing the risk of the flat copper wires deflecting when the lifting roller moves vertically to change the tension of the flat copper wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the flexible flat cable structure in Example 1.

[0029] Figure 2 Schematic diagram of the structure of the tension adjustment device in Example 1.

[0030] Figure 3 Schematic diagram of the structure of the tension adjustment device in Example 1.

[0031] Figure 4 Schematic diagram of the structure of the tension adjustment device in Example 2.

[0032] Figure 5 Schematic diagram of the structure of the tension adjustment device in Example 3.

[0033] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0034] Explanation of the accompanying drawings: 1. Flat copper wire; 2. Insulating sheet; 3. Fixed seat; 4. Lifting seat; 5. Linear reciprocating drive member; 6. Guide bar; 7. Lifting assembly; 71. Lifting roller; 72. First rubber sleeve; 73. Limiting ring; 8. Guide assembly; 81. Guide roller; 82. Second rubber sleeve; 83. Magnetic powder brake; 9. Tensioning assembly; 91. Tensioning roller; 92. Compression deformation member; 10. Frame. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-6 This application is described in further detail.

[0036] Example 1

[0037] Reference Figure 1 The flexible flat cable (FFC) includes a flat copper wire 1 and two layers of insulating sheets 2. The flat copper wire 1 is arranged between the two layers of insulating sheets 2, and the insulation covers the flat copper wire 1. The laminating machine used to produce the cable thermally bonds the two insulating sheets 2 into one piece, thereby fixing the flat copper wire 1 between the two layers of insulating sheets 2 to form a flexible flat cable (FFC).

[0038] Flat copper wire 1 is rolled and unwound before being conveyed via conveyor rollers between two layers of insulating sheets 2 for bonding. During this process, the wire's tension can fluctuate, affecting its transport and shifting its bonding position, increasing the defective rate of the FFC. It's worth noting that to improve production efficiency of flexible flat cables (FFCs), multiple flat copper wires 1 are typically conveyed together.

[0039] Reference Figure 2 and Figure 3 The present invention discloses a tension adjustment device for FFC production, which improves the tension stability of a flat copper wire (1) and reduces the defective rate of FFC. The FFC laminating machine is equipped with a tension detector to detect the tension of the flat copper wire (1). The tension detector and the tension adjustment device are both connected to a backend controller, which controls the operation of the tension adjustment device based on the detection data from the tension detector.

[0040] Reference Figure 2 and Figure 3 The tension adjustment device is installed on the laminating machine near the incoming flat copper wire 1. After being adjusted by the tension adjustment device, the flat copper wire 1 is conveyed to the laminating machine via conveyor rollers. The tension adjustment device for FFC production includes a frame 10, a fixed base 3, a lifting base 4, a linear reciprocating drive 5, a guide bar 6, a lifting assembly 7, and a guide assembly 8.

[0041] Reference Figure 2 and Figure 3 The fixed base 3 is mounted on the frame 10. Both the fixed base 3 and the lifting base 4 have slotted structures, with the slots of both the fixed base 3 and the lifting base 4 facing vertically upward. The outer periphery of the lifting base 4 slides along the inner periphery of the fixed base 3, with the lifting base 4 sliding in the vertical direction. The guide bars 6 are arranged vertically and fixed to the inner sidewall of the fixed base 3. The guide bars 6 are arranged on both sides of the lifting base 4 and abut against the lifting base 4 to improve the stability of the vertical sliding of the lifting base 4.

[0042] Reference Figure 2 and Figure 3A linear reciprocating drive 5 is fixedly mounted on the fixed base 3, and its driving end is fixedly connected to the lifting base 4. The linear reciprocating drive 5 is used to drive the lifting base 4 to move vertically. The linear reciprocating drive 5 can be a cylinder, linear module, or other linear reciprocating drive. In this embodiment, the linear reciprocating drive 5 is a cylinder to precisely control the travel of the lifting base 4.

[0043] Reference Figure 2 and Figure 3 The lifting assembly 7 includes a lifting roller 71 and a first rubber sleeve 72. The lifting roller 71 is arranged at the slot of the lifting seat 4, and the lifting roller 71 is rotatably connected to the lifting seat 4; the first rubber sleeve 72 is sleeved on the outer periphery of the lifting roller 71, and the first rubber sleeve 72 is used to abut against the flat copper wire 1.

[0044] Reference Figure 2 and Figure 3 The guide assembly 8 includes a guide roller 81, a second rubber sleeve 82, and a magnetic powder brake 83. The guide roller 81 is mounted in a notch on the fixed base 3, with both ends rotatably connected to the fixed base 3. The guide roller 81 is positioned on the side of the lifting base 4 that faces the incoming direction of the flat copper wire 1. The second rubber sleeve 82 is fixed to the outer periphery of the guide roller 81 and is designed to abut against the flat copper wire 1. The magnetic powder brake 83 is fixed to the fixed base 3 and is used to drive the guide roller 81 and the second rubber sleeve 82 to rotate.

[0045] The implementation principle of the tension adjustment device for FFC production in the embodiment of the present application is as follows:

[0046] Reference Figure 2 and Figure 3 The flat copper wire 1 passes through guide rollers 81 and lifting rollers 71, then is transported by conveyor rollers to the laminating machine, where it is thermally combined with the insulating sheet 2 to form a flexible flat cable (FFC). Because the second rubber sleeve 82 is located on the outer periphery of guide roller 81 and the first rubber sleeve 72 is located on the outer periphery of lifting roller 71, the first and second rubber sleeves 72 and 82 exert significant friction on the flat copper wire 1, thereby improving the tension adjustment device's ability to adjust the flat copper wire 1.

[0047] The tension detector on the FFC laminating machine detects the tension change of the flat copper wire 1 and transmits the detection data to the background controller, which controls the operation of the linear reciprocating drive 5 and the magnetic powder brake 83.

[0048] The magnetic powder brake 83 operates on electromagnetic principles, regulating torque transmission by controlling the flow of magnetic powder, thereby achieving precise control of tension. When the tension of the flat copper wire 1 fluctuates slightly, the magnetic powder brake 83 adjusts the rotation of the guide roller 81 to maintain tension without affecting the production line speed. This ensures accurate conveying of the flat copper wire 1 and improves the yield rate of the FFC.

[0049] When the tension of the flat copper wire 1 changes greatly, the background controller drives the driving end of the linear reciprocating drive member 5 to move, so that the lifting roller 71 lifts the flat copper wire 1, thereby achieving the purpose of adjusting the flat copper wire 1, maintaining the stability of the tension of the flat copper wire 1, and improving the accuracy of the fitting position of the flat copper wire 1, so as to reduce the defective rate of FFC.

[0050] Example 2

[0051] The difference between the second embodiment and the first embodiment is that the winding direction of the flat copper wire 1 is different.

[0052] Reference Figure 4 In this embodiment, the flat copper wire is first wound around the upper portion of the guide roller 81 and then wound around the lower portion of the lifting roller 71 .

[0053] Example 3

[0054] The difference between this embodiment 3 and embodiment 1 is that:

[0055] Reference Figure 5 and Figure 6 Several limiting rings 73 are provided on the outer periphery of the first rubber sleeve 72, and the limiting rings 73 are integrally formed with the first rubber sleeve 72; the limiting rings 73 are arranged at intervals along the length direction of the first rubber sleeve 72, and the flat copper wire 1 is arranged between two limiting rings 73; the limiting rings 73 separate the several flat copper wires 1; thereby, when the lifting roller 71 moves vertically to change the tension of the flat copper wire 1, the risk of the flat copper wire 1 being deflected can be reduced.

[0056] Reference Figure 5 The tension adjustment device also includes a tensioning assembly 9, which is arranged between the guide assembly 8 and the lifting assembly 7, and is rotatably connected to the fixed seat 3. Specifically, the tensioning assembly 9 includes a tensioning roller 91 and a compression deforming member 92. The tensioning roller 91 is arranged at the notch of the fixed seat 3, and both ends of the tensioning roller 91 are rotatably connected to the fixed seat 3. The tensioning roller 91 is arranged between the guide roller 81 and the lifting seat 4; the compression deforming member 92 is sleeved on the outer circumference of the tensioning roller 91, and the compression deforming member 92 is used to abut against the flat copper wire 1. The compression deforming member 92 can be a flexible deformable material such as sponge or porous silicone; in this embodiment, the compression deforming member 92 is a sponge, so that the compression deforming member has good deformation ability.

[0057] The implementation principle of the tension adjustment device for FFC production in the embodiment of the present application is as follows:

[0058] By arranging a tensioning roller 91 between the guide roller 81 and the lifting roller 71, when the flat copper wire 1 is squeezed by the compression deformation member 92, the compression deformation member 92 will continue to apply force to the flat copper wire 1 under the action of its own elastic deformation, thereby maintaining the tension of the flat copper wire 1.

[0059] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A tension regulating device for FFC production, wherein the FFC laminating machine is provided with a tension detector for detecting the tension of a flat copper wire (1); characterized in that: The invention comprises a fixed seat (3), a lifting seat (4), a linear reciprocating drive member (5) and a lifting roller (71), wherein the fixed seat (3) and the lifting seat (4) are both groove-shaped structures, the grooves of the fixed seat (3) and the lifting seat (4) are both vertically arranged upward, the outer peripheral side of the lifting seat (4) and the inner peripheral side of the fixed seat (3) are arranged to slide, and the sliding direction of the lifting seat (4) is a vertical direction; the linear reciprocating drive member (5) is fixed on the fixed seat (3), and the driving end of the linear reciprocating drive member (5) is fixedly connected to the lifting seat (4); the lifting roller (71) is arranged at the groove of the lifting seat (4), and the lifting roller (71) is rotatably connected to the lifting seat (4), the lifting roller (71) is used to abut against the flat copper wire (1), and the linear reciprocating drive member (5) drives the lifting roller (71) to move according to the detection data of the tension detector.

2. The tension adjustment device for FFC production according to claim 1, characterized in that: It also includes a guide roller (81), which is arranged at the notch of the fixed seat (3), and both ends of the guide roller (81) are rotatably connected to the fixed seat (3). The guide roller (81) is arranged on the side of the lifting seat (4) close to the feeding direction of the flat copper wire (1).

3. The tension adjustment device for FFC production according to claim 2, characterized in that: It also includes a magnetic powder brake (83), which is fixed on the fixing seat (3) and is used to drive the guide roller (81) to rotate.

4. The tension adjustment device for FFC production according to claim 1, characterized in that: The outer periphery of the lifting roller (71) is provided with a first rubber sleeve (72), and the first rubber sleeve (72) is used to abut against the flat copper wire (1).

5. The tension adjustment device for FFC production according to claim 4, characterized in that: A plurality of limiting rings (73) are provided on the outer periphery of the first rubber sleeve (72), and the limiting rings (73) and the first rubber sleeve (72) are integrally formed; the plurality of limiting rings (73) are arranged at intervals along the length direction of the first rubber sleeve (72), and the flat copper wire (1) is arranged between two limiting rings (73).

6. The tension adjustment device for FFC production according to claim 2, characterized in that: It also includes a tensioning roller (91) and a compression deformation member (92), wherein the tensioning roller (91) is arranged at the notch of the fixed seat (3), and both ends of the tensioning roller (91) are rotatably connected to the fixed seat (3), and the tensioning roller (91) is arranged between the guide roller (81) and the lifting seat (4); the compression deformation member (92) is sleeved on the outer periphery of the tensioning roller (91), and the compression deformation member (92) is used to abut against the flat copper wire (1).

7. The tension adjustment device for FFC production according to claim 6, characterized in that: The compression deformation member (92) is a sponge.

8. The tension adjustment device for FFC production according to claim 1, characterized in that: It also includes a guide bar (6), which is vertically arranged and fixed to the inner side wall of the fixed seat (3). The guide bar (6) is arranged on both sides of the lifting seat (4), and the guide bar (6) is in contact with the lifting seat (4).

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