Flexible circuit board cutting device

Abstract

The present application relates to a flexible circuit board cutting device, which belongs to the field of flexible circuit board processing, and includes a loading rack and a cutting rack. One end of the flexible circuit board extends to the cutting rack through a tensioning roller assembly. The cutting rack is arranged on one side of the loading rack. A rotatable driving roller assembly is provided on the cutting rack. Deformable tensioning members are provided on the outside of both ends of the driving roller assembly. The driving roller assembly can drive the flexible circuit board to move laterally on the loading rack, and generate longitudinal friction force on the flexible circuit board through the deformation of the tensioning member. A rotatable cutting roller assembly is also provided on the cutting rack. The cutting roller assembly is located on the side of the driving roller away from the loading rack. A plurality of annular cutters are provided on the cutting roller assembly. The annular cutters can cut the flexible circuit board along the feeding direction. A plurality of groups of tensioning members corresponding to the annular cutters are provided on the cutting roller assembly. The tensioning members tension the flexible circuit board when the annular cutters cut the flexible circuit board.

Description

Technical Field

[0001] The present application relates to the technical field of flexible circuit board processing, and in particular to a flexible circuit board cutting device. Background Art

[0002] Flexible Printed Circuit (FPC), also known as soft circuit board or flexible circuit board, is a circuit board made of polyimide or polyester film as the substrate, with high reliability and excellent flexibility.

[0003] FPC is popular for its excellent properties such as light weight, thin thickness, and the ability to bend and fold freely in three-dimensional space. By embedding circuit design on a bendable thin plastic sheet, a large number of precision components can be stacked in a narrow and limited space to form a bendable flexible circuit. Before cutting the existing FPC into a preset shape, the plate-shaped FPC needs to be cut into long strips, and then the long strips of FPC need to be further punched into shapes.

[0004] In the process of cutting the plate-shaped FPC into long strips, the plate-shaped FPC may deviate during the feeding process, resulting in failure to cut into a preset shape during cutting, which is prone to defective products and reduced economic benefits. Summary of the invention

[0005] The present application provides a flexible circuit board cutting device, which can solve the problem that the existing plate-shaped FPC is prone to deflection during the feeding process, thereby cutting out defective products.

[0006] The technical solution of the present application is as follows: A flexible circuit board cutting device, comprising: A loading rack, wherein a feeding roller is rotatably mounted inside the loading rack, and a flexible circuit board is rolled up on the feeding roller; A cutting frame, wherein one end of the flexible circuit board extends to the cutting frame through a tensioning roller assembly, the cutting frame is arranged on one side of the loading frame, a rotatable driving roller assembly is arranged on the cutting frame, and deformable tensioning members are arranged on the two ends of the driving roller assembly, the driving roller assembly can drive the flexible circuit board to move laterally on the loading frame, and generate longitudinal friction force on the flexible circuit board through the deformation of the tensioning member; The cutting frame is also provided with a rotatable cutting roller assembly, and the cutting roller assembly is located on the side of the driving roller assembly away from the loading frame. The cutting roller assembly is provided with a plurality of annular cutters, and the annular cutters can cut the flexible circuit board along the feeding direction. The cutting roller assembly is provided with a plurality of groups of tensioning members corresponding to the annular cutters one by one, and the tensioning members tension the flexible circuit board when the annular cutters cut the flexible circuit board.

[0007] By adopting the above scheme, a deformable tensioning member is provided on the cutting roller assembly and the driving roller assembly. When the cutting roller assembly rotates, the tensioning member on the cutting roller assembly can squeeze the flexible circuit board onto the cutting frame. The friction force of the tensioning member on the flexible circuit board drives the flexible circuit board to move laterally on the cutting board. At the same time, the deformation of the tensioning member when being squeezed can also provide longitudinal friction. When the flexible circuit board has a tendency to deviate longitudinally, the flexible circuit board is constantly subjected to the longitudinal friction force, thereby reducing the possibility of the flexible circuit board deviating during the feeding process. At the same time, multiple sets of tensioning members are also arranged on the cutting roller assembly. After the tensioning members are squeezed, they can provide lateral friction force on the flexible circuit board to assist the driving roller in driving the flexible circuit board to move. The annular cutter can rotate with the cutting roller assembly. While cutting the flexible circuit board, the tensioning members can generate a pair of forces that are away from the annular cutter at the cutting point of the flexible circuit board, so that when the flexible circuit board is cut, longitudinal wrinkles will not occur due to the annular cutter being not sharp enough.

[0008] In one embodiment of the present application, a driving assembly is provided on one side of the cutting frame, and the driving assembly includes: A driving motor, a placement plate is fixedly connected to one side of the cutting frame, and the driving motor is arranged on the placement plate; A double-input reducer, wherein the input shaft of the double-input reducer is coaxially connected and fixed with the driving shaft of the driving motor, and the two output shafts of the double-input reducer are respectively connected and fixed with the driving roller assembly and the cutting roller assembly.

[0009] By adopting the above scheme, when driving the cutting roller assembly and the driving roller assembly, a dual-input reducer is provided to be connected to the driving motor, and the driving motor is used to drive the output shaft of the dual-input reducer to rotate, thereby achieving synchronous rotation of the cutting roller assembly and the driving roller assembly.

[0010] In one embodiment of the present application, the driving roller assembly includes: A first fixing frame, wherein the first fixing frame is fixedly mounted on a side of the cutting frame close to the loading frame; A hollow rotating rod, wherein the hollow rotating rod is rotatably mounted inside the first fixing frame, one end of the hollow rotating rod extends to the outside of the first fixing frame and is connected and fixed to one of the output shafts of the dual-input reducer; A driving roller is provided with a cavity inside and is coaxially sleeved on the outside of the hollow rotating rod. The tensioning member is assembled on the driving roller.

[0011] By adopting the above solution, by arranging the driving roller on the side of the cutting frame close to the loading frame, the hollow rotating rod can utilize the extrusion deformation of the tensioning member during the rotation process to drive the flexible circuit board to move laterally along the cutting frame and tension the flexible circuit board at the same time.

[0012] In one embodiment of the present application, one end of the hollow rotating rod is provided with a concentrically arranged annular notch, and a plurality of connecting rods are provided in the annular notch, and the plurality of connecting rods are arranged circumferentially along the annular notch and extend along the length direction of the hollow rotating rod, and the hollow rotating rod is coaxially rotatably equipped with a rotating ring at the outside of the annular notch, and the rotating ring is provided with an air pipe connected to the hollow rotating rod, and the air pipe is connected to an air pump, and a plurality of air holes connected to the cavity are opened on the hollow rotating rod, and a plurality of strip through holes are opened on the outside of the driving roller along its own circumference at intervals, and the strip through holes extend along the length direction of the driving roller.

[0013] By adopting the above scheme, when the hollow rotating rod rotates, the air pump can blow out a high-speed airflow, which enters the interior of the hollow rotating rod from the air pipe at the rotating ring, and at the same time, the airflow can pass through the air holes of the hollow rotating rod, and at the same time, the airflow can be ejected from the strip through holes to form a flat airflow. When the high-speed flat airflow blows toward the flexible circuit board, it can smooth out the wrinkles on the flexible circuit board before cutting, and at the same time ensure that the flexible circuit board is always attached to the cutting frame.

[0014] In one embodiment of the present application, the cutting roller assembly comprises: A second fixing frame, the second fixing frame is fixed on the cutting frame and is located on a side of the first fixing frame away from the loading frame; A cutting rod, the cutting rod is rotatably mounted on the second fixing frame, one end of the cutting rod extends to the outside of the second fixing frame and is connected and fixed to the other output shaft of the dual-input reducer; A plurality of rotating columns are coaxially assembled on the cutting rod and arranged at intervals along the length direction of the cutting rod. The annular cutter and the tensioning member are coaxially arranged on the rotating column.

[0015] By adopting the above scheme, when the plate-shaped flexible circuit board is cut into multiple long strips of flexible circuit boards, multiple rotating columns are set and cutters are set on the rotating columns. The rotation of the rotating columns can drive the flexible circuit board to move, and the cutters can rotate with the rotation of the rotating columns. Then, by utilizing the rotation of multiple groups of annular cutters, the annular cutters can move on the flexible circuit board and cut the flexible circuit board.

[0016] In one embodiment of the present application, the tensioning member includes two first elastic rings, and the two first elastic rings are coaxially sleeved on both ends of the driving roller and the rotating column. An annular recess is concentrically opened on the side of the two first elastic rings facing away from each other, and the cross-sectional shape of the first elastic ring is a quarter of a circle.

[0017] By adopting the above solution, when the first elastic ring is squeezed from the front, it can bend toward one side of the annular recess. For the rotating column, when the two first elastic rings on the same rotating column are bent, the friction forces generated on the flexible circuit board are in opposite directions in the longitudinal direction. When the annular cutter located between the two first elastic rings cuts the flexible circuit board, it will generate a downward force on the flexible circuit board. Therefore, longitudinal friction forces in opposite directions are applied on both sides of the cutting position, which can effectively avoid longitudinal wrinkles of the flexible circuit board when cutting. For the driving roller, after the first elastic ring is squeezed from the front, the opposite elastic forces generated make the flexible circuit board receive corresponding longitudinal resistance in the longitudinal direction whether it deflects to the left or right, thereby reducing the possibility of deflection of the flexible circuit board during movement.

[0018] In one embodiment of the present application, the tensioning member includes two second elastic rings, and the two second elastic rings are coaxially sleeved on both ends of the driving roller and the rotating column. The cross-sectional shape of the second elastic ring is a rectangle, and an annular cavity with a cross-sectional shape of a right triangle is concentrically opened inside the second elastic ring. The cross-sectional width of the annular cavity gradually increases in the direction away from the annular cutter, and the cross-sectional length of the annular cavity gradually decreases along the radial direction of the second elastic ring.

[0019] By adopting the above scheme, a second elastic ring is provided, and an annular cavity with a right-angled triangle cross-section is provided inside the second elastic ring. When the second elastic ring is squeezed, the annular cavity is closed due to the squeezing. At this time, the side of the second elastic ring close to the flexible circuit board will be longitudinally stretched due to deformation. During the stretching, the second elasticity can also generate frictional forces in opposite directions on the flexible circuit board, thereby preventing the annular cutter from longitudinally wrinkling during cutting and preventing the flexible circuit board from longitudinally deflecting and displacing.

[0020] In one embodiment of the present application, the thickness h1 of the first elastic ring, the distance d from the lower surface of the driving roller to the upper surface of the cutting frame, and the cross-sectional width h2 of the annular cutter satisfy: d=h2

[0021] ​By adopting the above solution, by limiting the thickness of the first elastic ring, the distance from the lower surface of the driving roller to the upper surface of the cutting frame, and the cross-sectional width of the annular cutter, when the annular cutter contacts the upper surface of the cutting frame, the first elastic ring can be squeezed, thereby providing longitudinal friction for the flexible circuit board.

[0022] In one embodiment of the present application, the thickness h3 of the second elastic ring, the distance d from the lower surface of the driving roller to the upper surface of the cutting frame, and the cross-sectional width h2 of the annular cutter satisfy: d=h2 <h3。

[0023] By adopting the above scheme, by limiting the thickness of the second elastic ring, the distance from the lower surface of the driving roller to the upper surface of the cutting frame and the cross-sectional width of the annular cutter, when using tensioning members of different structures, by limiting the thickness of the second elastic ring, the second elastic ring can also be squeezed when the annular cutter contacts the flexible circuit board, thereby ensuring that it generates a longitudinal friction force on the flexible circuit board.

[0024] In one embodiment of the present application, the tensioning roller assembly includes a plurality of tensioning rollers, which are rotatably assembled on the loading rack at intervals up and down, and one end of the flexible circuit board bypasses the plurality of tensioning rollers and extends to the upper surface of the cutting rack.

[0025] By adopting the above solution and arranging a plurality of tension rollers, before the flexible circuit board enters the cutting plate, the flexible circuit board is wound around the plurality of tension rollers, thereby ensuring the tension of the flexible circuit board during feeding.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting a tensioning member, a group of tensioning members are set on the driving roller assembly. When the driving roller assembly rotates, the tensioning member can provide positive pressure to the flexible circuit board after being squeezed, so that the tensioning member can generate lateral friction power to drive the flexible circuit board to move on the cutting board. At the same time, when the tensioning member is deformed, it will also generate longitudinal friction forces in directions that deviate from each other on the flexible circuit board, thereby avoiding wrinkles on the flexible circuit board. In addition, when the flexible circuit board has a tendency to deviate longitudinally, it will be subject to longitudinal friction forces in relative directions, thereby reducing the possibility of deviation of the flexible circuit board.

[0027] 2. By arranging multiple sets of tensioning members on the cutting roller assembly, when the cutting roller assembly rotates and drives the annular cutter to cut the flexible circuit board, the tensioning members can be deformed and generate longitudinal friction forces in directions diverging from each other on the flexible circuit board. Since the tensioning members are arranged on both sides of the annular cutter, the tensioning members will automatically tension the flexible circuit board when generating longitudinal friction forces in directions diverging from each other on the flexible circuit board, thereby preventing the flexible circuit board from longitudinal wrinkles when the annular cutter is cutting. At the same time, the tensioning members can also squeeze the flexible circuit board and drive the flexible circuit board to move on the cutting board.

[0028] 3. By setting an annular gap and setting the hollow rotating rod into an internal hollow structure, the air pump can press the external airflow into the driving roller. After the high-speed airflow bulges out from the air pump, it passes through the air pipe, the hollow rotating rod, the air hole, the cavity inside the driving roller in turn, and finally is discharged through the strip through hole. When the airflow is discharged through the strip through hole, multiple planar airflows can be sprayed radially along the driving roller, so that when the flexible circuit board is loaded onto the cutting board, the airflow is tilted to blow toward the flexible circuit board, and at the same time, the debris on it is blown off and the horizontal wrinkles on the flexible circuit board are smoothed. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a front view of a flexible circuit board cutting device provided in the first embodiment of the present application; Figure 2 This is a front view of a cutting roller assembly of a flexible circuit board cutting device provided in the first embodiment of the present application; Figure 3 It is a side view schematic diagram of a cutting roller assembly of a flexible circuit board cutting device provided in the first embodiment of the present application; Figure 4 yes Figure 3 A magnified schematic diagram of part A; Figure 5 It is a side cross-sectional view of a circular cutter of a flexible circuit board cutting device provided in the first embodiment of the present application; Figure 6 It is a partial schematic side cross-sectional view of a driving roller of a flexible circuit board cutting device provided in the second embodiment of the present application; Figure 7 yes Figure 6 A magnified schematic diagram of part A; Figure 8 It is a side cross-sectional view of a circular cutter of a flexible circuit board cutting device provided in the second embodiment of the present application.

[0030] Explanation of the reference numerals: 1. loading rack; 11. unloading roller; 12. tensioning roller assembly; 121. tensioning roller; 2. cutting rack; 21. driving roller assembly; 211. first fixed rack; 212. hollow rotating rod; 2121. annular notch; 2122. connecting rod; 2123. rotating ring; 2124. air pipe; 2125. air hole; 213. driving roller; 2131. strip through hole; 2132. cavity; 22. cutting roller assembly; 221. annular cutter; 222. second fixed rack; 223. cutting rod; 224. rotating column; 23. driving assembly; 231. driving motor; 232. placing plate; 233. double-input reducer; 3. tensioning member; 31. first elastic ring; 311. annular depression; 32. second elastic ring; 321. annular cavity; 4. flexible circuit board. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-8 A flexible circuit board cutting device provided in the present application is further described in detail.

[0032] Example 1 A flexible circuit board 4 cutting device provided in an embodiment of the present application includes: a loading frame 1, a cutting frame 2, a tensioning member 3 and a flexible circuit board 4.

[0033] See also Figure 1 A feeding roller 11 is rotatably mounted inside the feeding rack 1 , and a flexible circuit board 4 is rolled up on the feeding roller 11 .

[0034] Please continue reading Figure 1 The tensioning roller assembly 12 includes a plurality of tensioning rollers 121, and the plurality of tensioning rollers 121 are rotatably assembled on the loading rack 1 at intervals up and down. One end of the flexible circuit board 4 bypasses the plurality of tensioning rollers 121 and extends to the upper surface of the cutting rack 2. By setting a plurality of tensioning rollers 121, sufficient tension can be ensured before the flexible circuit board 4 enters the cutting rack 2, thereby avoiding lateral wrinkles of the flexible circuit board 4.

[0035] Please continue reading Figure 1 , one end of the flexible circuit board 4 extends to the cutting frame 2 through the tensioning roller assembly 12, the cutting frame 2 is arranged on one side of the loading frame 1, and a rotatable driving roller assembly 21 is provided on the cutting frame 2, and deformable tensioning members 3 are provided on the two ends of the driving roller assembly 21. The driving roller assembly 21 can drive the flexible circuit board 4 to move horizontally on the loading frame 1, and generate longitudinal friction force on the flexible circuit board 4 through the deformation of the tensioning member 3; See also Figure 2The cutting frame 2 is also provided with a rotatable cutting roller assembly 22, and the cutting roller assembly 22 is located on the side of the driving roller assembly 21 away from the loading frame 1. The cutting roller assembly 22 is provided with a plurality of annular cutters 221, and the annular cutters 221 can cut the flexible circuit board 4 along the feeding direction. The cutting roller assembly 22 is provided with a plurality of groups of tensioning members 3 corresponding to the annular cutters 221 one by one, and the tensioning members 3 tension the flexible circuit board 4 when the annular cutters 221 cut the flexible circuit board 4, respectively on the driving roller assembly 21. A tensioning member 3 is provided on the assembly 21 and the cutting roller assembly 22, so that the flexible circuit board 4 can generate longitudinal friction forces that deviate from each other after the tensioning member 3 is squeezed and deformed, so that the tensioning member 3 can longitudinally tension the flexible circuit board 4. At the same time, after the tensioning member 3 is deformed, since the friction forces of the tensioning member 3 on the flexible circuit board 4 are in opposite directions, no matter which direction the flexible circuit board 4 has a tendency to deviate in the longitudinal direction, it can be subjected to a corresponding resistance in the opposite direction, thereby reducing the possibility of the flexible circuit board 4 being deflected during the cutting process.

[0036] Please continue reading Figure 1 A driving assembly 23 is provided on one side of the cutting frame 2, and the driving assembly 23 includes: a driving motor 231 and a dual-input reducer 233. A placement plate 232 is fixedly connected to one side of the cutting frame 2, and the driving motor 231 is arranged on the placement plate 232. The input shaft of the dual-input reducer 233 is coaxially connected and fixed with the driving shaft of the driving motor 231, and the two output shafts of the dual-input reducer 233 are respectively connected and fixed with the driving roller assembly 21 and the cutting roller assembly 22. By arranging the dual-input reducer 233, the device can simultaneously drive the driving roller assembly 21 and the cutting roller assembly 22 to rotate through one driving motor 231, thereby saving energy loss and enabling the driving roller assembly 21 and the cutting roller assembly 22 to rotate simultaneously.

[0037] In this embodiment, the dual-input reducer 233 includes a housing, an input shaft, a gear transmission group and two output shafts. The input shaft is rotatably assembled on one side of the housing, one end of which extends to the inside of the housing and is connected to the gear transmission group. The two output shafts are rotatably assembled on the other side of the housing at an interval. Both output shafts are connected to the gear transmission assembly. The gear transmission group includes a plurality of gears. By selecting a suitable number and size of gears to be meshed and connected with each other according to actual needs, when the input shaft rotates, the torque can be transmitted to the two output shafts through the gear transmission group. The number, size and position relationship of the gears in the gear transmission group are all existing conventional technologies, so they are not elaborated here.

[0038] See also Figure 3The driving roller assembly 21 includes: a first fixed frame 211, a hollow rotating rod 212 and a driving roller 213. The first fixed frame 211 is fixedly assembled on the side of the cutting frame 2 close to the loading frame 1. The hollow rotating rod 212 is rotatably assembled inside the first fixed frame 211. One end of the hollow rotating rod 212 extends to the outside of the first fixed frame 211 and is connected and fixed to one of the output shafts of the dual-input reducer 233. A cavity 2132 is provided inside the driving roller 213, and is coaxially sleeved on the outside of the hollow rotating rod 212. The tensioning member 3 is assembled on the driving roller 213. By setting the hollow rotating rod 212, the hollow rotating rod 212 can drive the driving roller 213 to rotate when it rotates, so as to drive the tensioning member 3 set on the driving roller 213 to rotate, so as to drive the flexible circuit board 4 to move on the cutting frame 2.

[0039] See also Figure 3 and Figure 4 The hollow rotating rod 212 has a concentrically arranged annular notch 2121 at one end, and a plurality of connecting rods 2122 are arranged in the annular notch 2121. The plurality of connecting rods 2122 are arranged circumferentially along the annular notch 2121 and extend along the length direction of the hollow rotating rod 212. The hollow rotating rod 212 is coaxially rotatably equipped with a rotating ring 2123 at the outside of the annular notch 2121. The rotating ring 2123 is provided with an air pipe 2124 connected to the hollow rotating rod 212. The air pipe 2124 is connected to the air pump. The hollow rotating rod 212 is provided with a A plurality of air holes 2125 are connected to the cavity 2132, and a plurality of strip through holes 2131 are spaced apart along the circumference of the driving roller 213. The strip through holes 2131 extend along the length direction of the driving roller 213. A hollow rotating rod 212 connected to the air pump is provided, so that the driving roller 213 can continuously eject sheet-like high-speed airflow when rotating. The high-speed airflow can smooth the flexible circuit board 4 before the flexible circuit board 4 reaches the driving roller 213, and can also generate downward pressure on the flexible circuit board 4, thereby further reducing the longitudinal deviation of the flexible circuit board 4.

[0040] See also Figure 2The cutting roller assembly 22 includes: a second fixed frame 222, a cutting rod 223 and a rotating column 224. The second fixed frame 222 is fixed on the cutting frame 2 and is located on the side of the first fixed frame 211 away from the loading frame 1. The cutting rod 223 is rotatably assembled on the second fixed frame 222. One end of the cutting rod 223 extends to the outside of the second fixed frame 222 and is connected and fixed to the other output shaft of the dual-input reducer 233. There are multiple rotating columns 224, and multiple rotating columns 224 are coaxially assembled on the cutting rod 223 and arranged at intervals along the length direction of the cutting rod 223. The annular cutter 221 and the tensioning member 3 are coaxially arranged on the rotating column 224. By arranging the cutting roller assembly 22, the rotating column 224 can drive the annular cutter 221 to roll on the flexible circuit board 4 when rotating, and with the lateral movement of the flexible circuit board 4, the flexible circuit board 4 is horizontally cut, so that it is cut into multiple strips of flexible circuit board 4.

[0041] See also Figure 5 The tensioning member 3 includes two first elastic rings 31, and the two ends of the driving roller 213 and the rotating column 224 are coaxially sleeved with the two first elastic rings 31. The two first elastic rings 31 are concentrically provided with an annular recess 311 on the side away from each other. The cross-sectional shape of the first elastic ring 31 is a quarter-circular ring. By setting the first elastic ring 31 as an annular elastic ring with a quarter-circular ring cross-sectional shape, the two first elastic rings 31 can automatically bend toward the side away from each other after being squeezed. During the bending process, a longitudinal relative displacement or relative movement trend is generated between the two first elastic rings 31 and the flexible circuit board 4, thereby generating a longitudinal friction force, tensioning the flexible circuit board 4 and reducing the possibility of the flexible circuit board 4 being deflected. At the same time, it can also generate downward pressure on the flexible circuit board 4 to drive the flexible circuit board 4 to move.

[0042] Please continue reading Figure 5 , the thickness h1 of the first elastic ring 31, the distance d from the lower surface of the driving roller 213 to the upper surface of the cutting frame 2 and the cross-sectional width h2 of the annular cutter 221 satisfy: d=h2

[0043] Example 2 See also Figure 6 and Figure 7 ​, Embodiment 2 is basically the same as Embodiment 1, except that the tensioning member 3 includes two second elastic rings 32. Two of the second elastic rings 32 are coaxially sleeved at both ends of the driving roller 213 and the rotating column 224. The cross-sectional shape of the second elastic ring 32 is rectangular. An annular cavity 321 with a right-angled triangle cross-sectional shape is concentrically formed inside the second elastic ring 32. The cross-sectional width of the annular cavity 321 gradually increases in the direction away from the annular cutter 221, and the cross-sectional length of the annular cavity 321 gradually decreases in the radial direction of the second elastic ring 32. By providing the annular cavity 321 with a right-angled triangle cross-sectional shape inside the second elastic ring 32, when the two second elastic rings 32 are squeezed, the side in contact with the flexible circuit board 4 deforms, and a longitudinal relative displacement or relative movement tendency is generated between this side and the flexible circuit board 4, thereby being able to generate a longitudinal frictional force to tension the flexible circuit board 4 and reduce the possibility of the flexible circuit board 4 skewing. At the same time, it can also generate a downward pressure on the flexible circuit board 4 to drive the movement of the flexible circuit board 4.

[0044] Please refer to Figure 8 , the thickness h3 of the second elastic ring 32, the distance d from the lower surface of the driving roller 213 to the upper surface of the cutting frame 2, and the cross-sectional width h2 of the annular cutter 221 satisfy: d = h2 < h3. By defining the thickness of the second elastic ring 32, it is ensured that it can be deformed under pressure when the driving roller 213 and the rotating column 224 rotate.

[0045] In summary, when the flexible circuit board 4 needs to be cut, the driving roller 213 rotates. At this time, the tensioning member 3 outside the driving roller 213 can generate a downward pressure on the flexible circuit board 4. Due to the relative movement between the two, the tensioning member 3 can drive the flexible circuit board 4 to move horizontally along the cutting frame 2 until the flexible circuit board 4 moves to the cutting roller assembly. As the rotating column 224 rotates, the tensioning member 3 located on the rotating column 224 can continuously ensure the pressure on the flexible circuit board 4, and due to the relative movement between the two, it can assist the driving roller 213 to drive the movement of the flexible circuit board 4; When the tensioning member 3 on the driving roller 213 is squeezed by the flexible circuit board 4, the tensioning member 3 can also deform in the longitudinal direction, so that a longitudinal frictional force in the opposite direction can be generated between the tensioning member 3 and the flexible circuit board 4. During the deformation process, the flexible circuit board 4 can be automatically tensioned. At the same time, when the flexible circuit board 4 has a longitudinal skew or a longitudinal skew movement tendency, no matter which direction it skews, it will be subject to a longitudinal resistance in the opposite direction, thereby reducing the possibility of the flexible circuit board 4 skewing; When the rotating column 224 on the cutting roller assembly 22 is squeezed by the flexible circuit board 4, the tensioning member 3 can also be deformed in the longitudinal direction, so that the tensioning member 3 can generate a longitudinal friction force in the opposite direction to the flexible circuit board 4, so that the annular cutter 221 will not have wrinkles in the longitudinal direction when cutting the flexible circuit board 4, thereby improving the smoothness of cutting the flexible circuit board 4 and reducing the possibility of the flexible circuit board 4 being deflected.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A flexible circuit board cutting device, characterized in that: include: A loading rack (1), wherein a feeding roller (11) is rotatably mounted inside the loading rack (1), and a flexible circuit board is rolled up on the feeding roller (11); A cutting frame (2), one end of the flexible circuit board extends to the cutting frame (2) through a tensioning roller assembly (12), the cutting frame (2) is arranged on one side of the loading frame (1), a rotatable driving roller assembly (21) is provided on the cutting frame (2), and deformable tensioning members (3) are provided on the outside of both ends of the driving roller assembly (21), the driving roller assembly (21) can drive the flexible circuit board to move horizontally on the loading frame (1), and generate longitudinal friction force on the flexible circuit board through the deformation of the tensioning member (3); The cutting frame (2) is also provided with a rotatable cutting roller assembly (22), the cutting roller assembly (22) is located on a side of the driving roller assembly (21) away from the loading frame (1), the cutting roller assembly (22) is provided with a plurality of annular cutters (221), the annular cutters (221) can cut the flexible circuit board along the feeding direction, and the cutting roller assembly (22) is provided with a plurality of groups of tensioning members (3) corresponding to the annular cutters (221) one by one, the tensioning members (3) tensioning the flexible circuit board when the annular cutters (221) cut the flexible circuit board.

2. A flexible circuit board cutting device according to claim 1, characterized in that: A driving assembly (23) is provided on one side of the cutting frame (2), and the driving assembly (23) comprises: A driving motor (231), one side of the cutting frame (2) is fixedly connected to a placement plate (232), and the driving motor (231) is arranged on the placement plate (232); A double-input reducer (233), wherein the input shaft of the double-input reducer (233) is coaxially connected and fixed with the drive shaft of the drive motor (231), and the two output shafts of the double-input reducer (233) are respectively connected and fixed with the drive roller assembly (21) and the cutting roller assembly (22).

3. A flexible circuit board cutting device according to claim 2, characterized in that: The driving roller assembly (21) comprises: A first fixing frame (211), the first fixing frame (211) being fixedly mounted on a side of the cutting frame (2) close to the loading frame (1); a hollow rotating rod (212), the hollow rotating rod (212) being rotatably mounted inside the first fixed frame (211), one end of the hollow rotating rod (212) extending to the outside of the first fixed frame (211) and being connected and fixed to one of the output shafts of the dual-input reducer (233); A driving roller (213) is provided with a cavity (2132) inside the driving roller (213) and is coaxially sleeved on the outside of the hollow rotating rod (212); the tensioning member (3) is assembled on the driving roller (213).

4. A flexible circuit board cutting device according to claim 3, characterized in that: One end of the hollow rotating rod (212) is provided with a concentrically arranged annular notch (2121), and a plurality of connecting rods (2122) are provided in the annular notch (2121). The plurality of connecting rods (2122) are arranged along the circumference of the annular notch (2121) and extend along the length direction of the hollow rotating rod (212). The hollow rotating rod (212) is coaxially rotatably equipped with a rotating ring (2123) outside the annular notch (2121). The rotating ring (2123) is provided with an air pipe (2124) connected to the hollow rotating rod (212), and the air pipe (2124) is connected to an air pump. The hollow rotating rod (212) is provided with a plurality of air holes (2125) connected to the cavity (2132). The driving roller (213) is provided with a plurality of strip-shaped through holes (2131) at intervals along its circumference on the outside, and the strip-shaped through holes (2131) extend along the length direction of the driving roller (213).

5. The flexible circuit board cutting device according to claim 3, characterized in that: The cutting roller assembly (22) comprises: A second fixing frame (222), the second fixing frame (222) being fixed on the cutting frame (2) and being located on a side of the first fixing frame (211) away from the loading frame (1); A cutting rod (223), the cutting rod (223) is rotatably mounted on the second fixing frame (222), one end of the cutting rod (223) extends to the outside of the second fixing frame (222) and is connected and fixed to the other output shaft of the dual-input reducer (233); A plurality of rotating columns (224) are coaxially assembled on the cutting rod (223) and arranged at intervals along the length direction of the cutting rod (223); the annular cutter (221) and the tensioning member (3) are coaxially arranged on the rotating column (224).

6. A flexible circuit board cutting device according to claim 5, characterized in that: The tensioning member (3) comprises two first elastic rings (31), and the two ends of the driving roller (213) and the rotating column (224) are coaxially sleeved with the two first elastic rings (31), and the two first elastic rings (31) are coaxially provided with an annular recess (311) on one side facing away from each other, and the cross-section shape of the first elastic ring (31) is a quarter of a circle.

7. The flexible circuit board cutting device according to claim 5, characterized in that: The tensioning member (3) comprises two second elastic rings (32), and the two ends of the driving roller (213) and the rotating column (224) are coaxially sleeved with the two second elastic rings (32), the cross-sectional shape of the second elastic ring (32) is rectangular, and an annular cavity (321) with a cross-sectional shape of a right-angled triangle is concentrically opened inside the second elastic ring (32), the cross-sectional width of the annular cavity (321) gradually increases in a direction away from the annular cutter (221), and the cross-sectional length of the annular cavity (321) gradually decreases in the radial direction of the second elastic ring (32).

8. The flexible circuit board cutting device according to claim 6, characterized in that: The thickness h1 of the first elastic ring (31), the distance d from the lower surface of the driving roller (213) to the upper surface of the cutting frame (2), and the cross-sectional width h2 of the annular cutter (221) satisfy: d=h2 <h1。 9. The flexible circuit board cutting device according to claim 7, characterized in that: The thickness h3 of the second elastic ring (32), the distance d from the lower surface of the driving roller (213) to the upper surface of the cutting frame (2), and the cross-sectional width h2 of the annular cutter (221) satisfy: d=h2 <h3。 10. The flexible circuit board cutting device according to claim 1, characterized in that: The tensioning roller assembly (12) comprises a plurality of tensioning rollers (121), and the plurality of tensioning rollers (121) are rotatably mounted on the loading rack (1) at intervals up and down, and one end of the flexible circuit board bypasses the plurality of tensioning rollers (121) and extends to the upper surface of the cutting rack (2).

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