Flexible circuit board winding system

Abstract

The invention discloses a flexible circuit board winding system, which relates to the technical field of circuit board manufacturing and comprises a base, a conveying table and a concave frame are respectively fixed on two sides of the top end of the base, and a circuit board pre-cleaning mechanism and a circuit board limiting and guiding mechanism are arranged between the conveying table and the concave frame; the winding roller formed by the arc-shaped clamping jaws is used for winding the flexible circuit board, the arc-shaped clamping jaws only support the two sides of the flexible circuit board, compression on a precise circuit and a protruding element on the flexible circuit board can be effectively avoided, the clamping plates are in linkage with the arc-shaped clamping jaws through the gear transmission mechanism, and the clamping effect is good. In addition, a group of driving boxes are fixed on each of two sides of the rotating plate, and the rotating plate is driven to rotate through the rotating adjusting mechanism, so that the winding assemblies on two sides of the rotating plate can perform winding work of the flexible circuit board in turn, and the winding efficiency of the flexible circuit board is improved. And the winding efficiency of the flexible circuit board is improved to a certain extent.

Description

Technical Field

[0001] This invention relates to the field of circuit board manufacturing technology, and in particular to a flexible circuit board winding system. Background Technology

[0002] Circuit boards are core components of electronic devices, made of laminated insulating substrate and conductive copper foil. A precision network of wires is formed through etching, enabling electrical connections and signal transmission between electronic components. Based on their structure, circuit boards can be classified as single-sided, double-sided, and multilayer boards (up to dozens of layers). Circuit boards miniaturize and visualize circuits, playing a crucial role in the mass production of fixed circuits and the optimization of electrical appliance layout.

[0003] Flexible printed circuit boards (FPCBs) are designed to accommodate curved surfaces. Their manufacturing process involves multiple steps, including drilling, electroplating, and solder masking, with surfaces often plated with gold or tin to prevent oxidation. They are widely used in computers, communication equipment, automotive electronics, and smart home appliances, supporting component fixation and providing a stable circuit environment. They are a key component in the miniaturization and high integration of modern electronic products. During production and packaging, FPCBs are typically wound into a cylindrical shape for easy packing.

[0004] Based on existing technology, most flexible circuit board (PCB) winding equipment uses a full-wrap winding method, where the spool and the PCB are in direct, complete contact with each other without gaps. This can easily cause pressure on the precision circuits and protruding components on the PCB, leading to scratches, indentations, and particle contamination due to mechanical contact. Furthermore, the ends of the PCB need to be pre-fixed to the winding assembly before winding, and after winding, the inner side of the PCB is too tightly attached to the winding assembly, making it difficult to remove and causing inconvenience for unloading. Additionally, the entire winding system needs to be shut down when the winding assembly requires maintenance or repair, which reduces the winding efficiency of the PCB to some extent. Therefore, this invention proposes a flexible circuit board winding system to solve the problems existing in the prior art. Summary of the Invention

[0005] To address the aforementioned problems, the present invention aims to provide a flexible circuit board winding system that solves the problems of existing flexible circuit board winding equipment that easily compresses the precision circuits and protruding components on the flexible circuit board during the winding process, makes it difficult to remove the flexible circuit board from the winding assembly after winding, and requires the entire winding system to be shut down during maintenance and repair of the winding assembly.

[0006] To achieve the objectives of this invention, the following technical solution is provided: A flexible circuit board winding system includes a base, with a conveyor platform and a concave frame fixed on both sides of the top of the base. A circuit board pre-cleaning mechanism and a circuit board limiting and guiding mechanism are provided between the conveyor platform and the concave frame. A rotating plate driven to rotate by a rotation adjustment mechanism is provided on the inner side of the concave frame. A drive box is fixed on both sides of the rotating plate. A support plate driven to move by a spacing adjustment mechanism is symmetrically provided on the side of the drive box away from the rotating plate. A mounting seat driven to rotate by a winding motor is rotatably connected to the opposite side of the two sets of support plates. A winding box positioned by an elastic snap-fit ​​mechanism is fitted onto the side of the mounting seat away from the support plate. An annular baffle that fits against the mounting seat is fixed on the outer wall of the winding box. Four sets of symmetrically distributed arc-shaped grippers driven to move by a gripper drive mechanism are slidably provided on the side of the winding box away from the support plate. Clamping plates are symmetrically provided between the upper and lower sets of arc-shaped grippers. The two sets of clamping plates are linked to the upper and lower sets of arc-shaped grippers through a gear transmission mechanism and their displacement directions are opposite.

[0007] A further improvement is that the gripper driving mechanism includes a first cylinder fixed to the side wall of the winding box away from the arc-shaped gripper and a first slider fixed to the end of the arc-shaped gripper near the winding box. A push block is fixed to the output end of the first cylinder. The end of the first slider away from the arc-shaped gripper slides through into the interior of the winding box and is hinged to the push block through a linkage rod. A limit protrusion is fixed to the side of the first slider that contacts the winding box. A limit groove adapted to the limit protrusion is provided on the side of the winding box that contacts the first slider.

[0008] A further improvement is that the gear transmission mechanism includes a first rack fixed to the side wall of the upper and lower sets of the first sliders on opposite sides and a second slider fixed to the end of the clamping plate near the winding box. The end of the second slider away from the clamping plate slides through into the inside of the winding box and is fixed with a second rack. A transmission gear rotatably connected to the inside of the winding box meshes between the first rack and the second rack.

[0009] Further improvements include: symmetrical positioning protrusions are fixed on the side of the annular baffle near the mounting base; symmetrical limiting holes adapted to the positioning protrusions are opened on the side of the mounting base near the annular baffle; an outer support ring and an inner support ring are fixed on opposite sidewalls of the support plate and the mounting base, respectively; and support balls that contact the inner wall of the outer support ring are equidistantly arranged on the outer wall of the inner support ring.

[0010] A further improvement is that the elastic locking mechanism includes a positioning pin that slides through the upper and lower sides of the mounting base and an insertion hole that is opened at the upper and lower ends of the winding box and is adapted to the positioning pin. The mounting base has symmetrical cavities adapted to the positioning pin. A baffle is fixed on the side of the positioning pin located in the cavity. A limit spring is connected between the inner wall of the cavity away from the winding box and the baffle.

[0011] A further improvement is that the spacing adjustment mechanism includes a bidirectional lead screw rotatably connected inside the drive box and driven to rotate by a servo motor, and a threaded plate threaded onto both sides of the bidirectional lead screw. The end of the threaded plate away from the rotating plate slides through to the outside of the drive box and is fixedly connected to the support plate.

[0012] A further improvement is that the rotation adjustment mechanism includes a transmission box fixed to the outer wall of the concave frame and a rotary motor fixed to the outer wall of the transmission box. The output end of the rotary motor passes through the transmission box through a bearing and is fixed with a drive sprocket. Both ends of the rotating plate are fixed with a rotating shaft that is rotatably connected to the concave frame. The rotating shaft on the side closer to the transmission box passes through the transmission box through a bearing and is fixed with a driven sprocket that is rotatably connected to the drive sprocket.

[0013] Further improvements include: the circuit board pre-cleaning mechanism includes a cleaning pipe fixed above the base and air pumps fixed on the upper and lower sides of the cleaning pipe. The output end of the air pump extends into the cleaning pipe and is fixed with a diverting air box. Dust collection boxes are provided above and below the cleaning pipe. Dust collection pipes extending into the cleaning pipe are symmetrically fixed on opposite sides of the two sets of dust collection boxes. Exhaust fans are fixed on opposite sides of the two sets of dust collection boxes. Dust filter plates are fixed inside the dust collection boxes. Cleaning felt rollers that are symmetrically distributed vertically are rotatably connected to both sides inside the cleaning pipe.

[0014] Further improvements are made in the following: the circuit board limiting and guiding mechanism includes a base plate fixed above the base and a concave plate located above the base plate and driven to rise and fall by a lifting adjustment mechanism. Both the front and rear side walls of the concave plate are threaded with one-way screws driven to rotate by a throttle handle. The two sets of one-way screws are rotatably connected to a limiting plate at opposite ends. The limiting plate is symmetrically fixed with a limiting rod that slides through the concave plate on the side near the one-way screw. The two sets of limiting plates are rotatably connected to a support roller on opposite sides. A cutting frame is fixed on the side of the concave plate near the concave frame. A cutting blade driven to rise and fall by a second cylinder is provided inside the cutting frame.

[0015] A further improvement is that the lifting and adjusting mechanism includes a threaded tube rotatably connected to the top of the base plate and a threaded rod fixed to the bottom of the concave plate. The lower part of the threaded rod is threadedly connected to the threaded tube. A sleeve is symmetrically fixed to the bottom of the concave plate. A sliding rod fixed to the top of the base plate is slidably provided inside the sleeve.

[0016] The beneficial effects of the present invention are as follows: The present invention drives the support plate, mounting base and winding box to adjust the spacing displacement through the spacing adjustment mechanism, and sets arc-shaped grippers on the winding box to be driven by the gripper driving mechanism. Thus, the winding roller formed by the arc-shaped grippers can be used to wind the flexible circuit board. Moreover, the arc-shaped grippers only provide support on both sides of the flexible circuit board, which can effectively avoid pressure on the precision circuits and protruding components on the flexible circuit board, avoid scratches, indentations and particle contamination caused by mechanical contact, and ensure the winding quality of the flexible circuit board.

[0017] Furthermore, the clamping plate is linked to the arc-shaped gripper through a gear transmission mechanism. The gripper drive mechanism drives each arc-shaped gripper on the winding box to move to the side closer to the clamping plate, so that the arc-shaped gripper separates from the inner side of the flexible circuit board roll. At the same time, the two symmetrically distributed clamping plates will also release the clamping on the end of the flexible circuit board under the action of the gear transmission mechanism. This can prevent the wound flexible circuit board roll from sticking too tightly to the arc-shaped gripper, thus making it easier to remove from the arc-shaped gripper and bringing convenience to the unloading work.

[0018] In addition, by fixing a set of drive boxes on both sides of the turntable and driving the turntable to rotate through the rotation adjustment mechanism, the winding components on both sides of the turntable can take turns to wind the flexible circuit board. It is also possible to maintain and repair the winding component on the other side while the winding component on one side is winding, which improves the winding efficiency of the flexible circuit board to a certain extent. Attached Figure Description

[0019] Figure 1 This is a front view of the present invention;

[0020] Figure 2 This is a front sectional view of the present invention;

[0021] Figure 3 This is a side view of the concave frame of the present invention;

[0022] Figure 4 This is a top sectional view of the rotating plate and drive box of the present invention;

[0023] Figure 5 This is a cross-sectional view of the mounting base and winding box of the present invention;

[0024] Figure 6 This is a cross-sectional view of the winding box of the present invention;

[0025] Figure 7 This is the invention Figure 6 Enlarged view of point A in the image;

[0026] Figure 8 This is a cross-sectional view of the cleaning pipe and dust collection box of the present invention;

[0027] Figure 9This is a cross-sectional view of the concave plate of the present invention;

[0028] Figure 10 This is a side view of the concave plate of the present invention.

[0029] The components are as follows: 1. Base; 2. Conveyor table; 3. Concave frame; 4. Rotating plate; 5. Drive box; 6. Support plate; 7. Winding motor; 8. Mounting seat; 9. Winding box; 10. Annular baffle; 11. Arc-shaped gripper; 12. Clamping plate; 13. First cylinder; 14. First slider; 15. Push block; 16. Linkage rod; 17. Limiting protrusion; 18. Limiting groove; 19. First rack; 20. Second slider; 21. Second rack; 22. Moving gear; 23. Positioning protrusion; 24. Limiting hole; 25. Outer support ring; 26. Inner support ring; 27. Support ball; 28. Positioning pin; 29. ​​Insertion hole; 30. Cavity; 31. Baffle plate. 32. Limiting spring; 33. Servo motor; 34. Bidirectional lead screw; 35. Threaded plate; 36. Transmission box; 37. Rotary motor; 38. Drive sprocket; 39. Shaft; 40. Driven sprocket; 41. Cleaning pipe; 42. Air pump; 43. Diverting air box; 44. Dust collection box; 45. Dust collection pipe; 46. Exhaust fan; 47. Dust filter plate; 48. Cleaning felt roller; 49. Base plate; 50. Concave plate; 51. One-way lead screw; 52. Limiting plate; 53. Limiting rod; 54. Support roller; 55. Cutting frame; 56. Second cylinder; 57. Cutting knife; 58. Threaded pipe; 59. Threaded rod; 60. Sleeve; 61. Slide rod. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Flexible printed circuit boards (FPCBs) are made of flexible insulating substrates that can be bent, rolled, and folded freely, offering many advantages that PCBs lack. FPCBs significantly reduce the size of electronic products, leading to their widespread application in aerospace, military, mobile communications, laptops, computer peripherals, PDAs, digital cameras, and many other fields and products. During the manufacturing process, the raw materials for FPCBs are typically rolled into cylindrical shapes for easy packing and transportation, requiring a corresponding winding system.

[0032] It should be noted that the technical means not described in detail in the embodiments of the present invention can be implemented by conventional means and are not the key points of the invention, so they will not be elaborated upon.

[0033] according to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 As shown, this embodiment provides a flexible circuit board winding system, including a base 1 fixed to the ground by bolts, a conveyor platform 2 and a concave frame 3 fixed to the left and right sides of the top of the base 1 by bolts. The conveyor platform 2 is provided with conveyor rollers driven by an external motor at equal intervals on its inner side for conveying the flexible circuit board to be wound from left to right. The top of the base 1 near the conveyor platform 2 is provided with a circuit board pre-cleaning mechanism for surface cleaning pretreatment of the flexible circuit board to be wound. The top of the base 1 near the concave frame 3 is provided with a circuit board limiting and guiding mechanism for limiting and guiding the flexible circuit board to be wound.

[0034] A rotating plate 4 is provided inside the concave frame 3, and the rotating plate 4 is driven to rotate by the rotation adjustment mechanism on the outer wall of the concave frame 3. The left and right outer walls of the rotating plate 4 are fixed with hollow drive boxes 5 by bolts. The side of the drive box 5 away from the rotating plate 4 is provided with support plates 6 that are symmetrically distributed front and back. The front and back support plates 6 are driven by the spacing adjustment mechanism inside the drive box 5 and move in opposite directions. The opposite side walls of the front and back support plates 6 are fixed with winding motors 7 by bolts. The opposite side walls of the front and back support plates 6 are rotatably connected with mounting seats 8, and the mounting seats 8 are driven to rotate by the winding motors 7. The front and back winding motors 7 are controlled by the same PLC control system and can drive the front and back mounting seats 8 to rotate synchronously.

[0035] A fitting groove is provided on the side of the mounting base 8 away from the support plate 6, and a winding box 9 is fitted into the fitting groove. The winding box 9 is installed and positioned inside the mounting base 8 by an elastic snap-fit ​​mechanism, enabling detachable installation for easy assembly and disassembly. An annular baffle 10 is fixed to the outer wall of the winding box 9, which fits against the mounting base 8 and limits the winding of the flexible circuit board. Four sets of symmetrically distributed arc-shaped grippers 11 are slidably provided on the side of the winding box 9 away from the support plate 6. The four sets of arc-shaped grippers 11 are driven by a gripper drive mechanism inside the winding box 9 to open or close. The upper and lower sets of arc-shaped grippers... Two sets of clamping plates 12 are provided between 11, arranged symmetrically in an upper and lower position, for clamping the end of the flexible circuit board. Anti-slip rubber pads are fixed on the side walls of the two sets of clamping plates 12 on opposite sides, which play an anti-slip role between the clamping plates 12 and the flexible circuit board. The two sets of clamping plates 12 are linked with the upper and lower sets of arc-shaped clamping claws 11 through a gear transmission mechanism and their displacement directions are opposite. The larger the distance between the upper and lower sets of arc-shaped clamping claws 11, the smaller the distance between the two sets of clamping plates 12, so as to clamp the end of the flexible circuit board. The smaller the distance between the upper and lower sets of arc-shaped clamping claws 11, the larger the distance between the two sets of clamping plates 12, so as to release the end of the flexible circuit board after winding.

[0036] The gripper drive mechanism includes a first cylinder 13 and a first slider 14. The first cylinder 13 is bolted to the side wall of the winding box 9 away from the arc-shaped gripper 11. The first slider 14 is fixed to the end of the arc-shaped gripper 11 near the winding box 9. The output end of the first cylinder 13 is located inside the winding box 9 and is bolted to a push block 15. A sliding rod is fixed on the push block 15, which slides through the side wall of the winding box 9 to limit the push block 15 and ensures that the push block 15 is more stable during the displacement driven by the first cylinder 13. The end of the first slider 14 away from the arc-shaped gripper 11 slides through into the winding box 9 and is hinged to a linkage rod 16. The side wall of the winding box 9 has an opening that matches the first slider 14. The connecting rod 16 is hinged to the push block 15 at the end away from the arc-shaped gripper 11 via a hinge. The first slider 14 is fixed with a limiting protrusion 17 on the side that contacts the winding box 9. A limiting groove 18 is opened on the side of the winding box 9 that contacts the first slider 14 (i.e., the inner wall of the connecting rod 16), and the limiting groove 18 is adapted to the limiting protrusion 17 to limit the first slider 14. The first cylinder 13 is activated to drive the push block 15 to move towards the arc-shaped gripper 11. Under the action of the connecting rod 16, the four sets of arc-shaped grippers 11 can be driven to open and move away from the clamping plate 12. Activating the first cylinder 13 to drive the push block 15 to move away from the arc-shaped gripper 11 can drive the four sets of arc-shaped grippers 11 to retract.

[0037] The gear transmission mechanism includes a first rack 19 and a second slider 20. The first rack 19 has two sets and is fixed to the opposite side wall of the upper and lower sets of first sliders 14 with screws. The second slider 20 has two sets and is fixed to the end of the clamping plate 12 near the winding box 9 with screws. The end of the second slider 20 away from the clamping plate 12 slides through into the winding box 9 and is fixed with a second rack 21. A transmission gear 22 meshes between the first rack 19 and the second rack 21, and the transmission gear 22 is rotatably connected to the inside of the winding box 9. Through the action of the transmission gear 22, the first rack 19 and the second rack 21 are linked. The movement direction of the second rack 21 is opposite to that of the first rack 19, that is, the clamping plate 12 and the arc-shaped gripper 11 are linked.

[0038] A positioning protrusion 23, symmetrically distributed vertically, is welded and fixed on the side of the annular baffle 10 near the mounting base 8. Limiting holes 24 are symmetrically opened on the side of the mounting base 8 near the annular baffle 10, and the limiting holes 24 are adapted to the positioning protrusions 23. When the annular baffle 10 and the mounting base 8 are connected, the positioning protrusions 23 are embedded in the limiting holes 24. An outer support ring 25 is fixed on the side wall of the support plate 6 near the mounting base 8. An inner support ring 26 extending to the inside of the outer support ring 25 is fixed on the side wall of the mounting base 8 near the support plate 6. Supporting balls 27 are equidistantly arranged on the outer wall of the inner support ring 26, and the supporting balls 27 are in contact with the inner wall of the outer support ring 25, playing an auxiliary support role between the support plate 6 and the mounting base 8, making the mounting base 8 more stable during rotation.

[0039] The elastic locking mechanism includes a positioning pin 28 and a socket 29. The positioning pin 28 has two sets and slides through the upper and lower sides of the mounting base 8 respectively. The socket 29 is adapted to the positioning pin 28 and is opened at the upper and lower ends of the winding box 9 respectively. The mounting base 8 has a cavity 30 adapted to the positioning pin 28 at the position of the positioning pin 28. A baffle 31 is fixed on one side of the positioning pin 28 in the cavity 30. A limit spring 32 is connected between the inner wall of the cavity 30 away from the winding box 9 and the baffle 31. The limit spring 32 is movably sleeved on the positioning pin 28. The limit spring 32 provides an elastic push force to the baffle 31, so that the positioning pin 28 can be automatically inserted into the socket 29, realizing the detachable installation and fixation between the mounting base 8 and the winding box 9. When the positioning pin 28 is pulled out of the socket 29, the installation and fixation between the mounting base 8 and the winding box 9 can be released.

[0040] The spacing adjustment mechanism includes a servo motor 33, a bidirectional lead screw 34, and a threaded plate 35. The servo motor 33 is fixed inside the drive box 5 by bolts. The bidirectional lead screw 34 is rotatably connected inside the drive box 5 through bearings and is driven to rotate by the servo motor 33. There are two sets of threaded plates 35. The two sets of threaded plates 35 are threadedly sleeved on both sides of the bidirectional lead screw 34 with opposite threading directions. The end of the threaded plate 35 away from the rotating plate 4 slides through to the outside of the drive box 5 and is fixedly connected to the support plate 6 by bolts. The drive box 5 has through slots that fit the threaded plates 35. The servo motor 33 drives the bidirectional lead screw 34 to rotate, causing the threaded plates 35 on both sides of the bidirectional lead screw 34 to move the support plate 6, thereby realizing the spacing adjustment between the two sets of support plates 6.

[0041] The rotary adjustment mechanism includes a transmission box 36 and a rotary motor 37. The transmission box 36 is fixed to the outer front wall of the concave frame 3 by bolts, and the rotary motor 37 is fixed to the outer wall of the transmission box 36 by bolts. The output end of the rotary motor 37 passes through the transmission box 36 through a bearing and is fixed with a drive sprocket 38. Rotary shafts 39 are fixed at both ends of the rotating plate 4. Both sets of rotating shafts 39 are rotatably connected to the inner side of the concave frame 3 by bearings. The front end of the front rotating shaft 39 passes through the transmission box 36 through a bearing and is fixed with a driven sprocket 40 that matches the drive sprocket 38. A chain is sleeved on both the drive sprocket 38 and the driven sprocket 40 and is connected by chain drive. The rotary motor 37 drives the drive sprocket 38 to rotate, and the drive sprocket 38 drives the driven sprocket 40 to rotate through the chain. The driven sprocket 40 then drives the rotating plate 4 to rotate through the rotating shaft 39, thereby realizing rotary adjustment.

[0042] The circuit board pre-cleaning mechanism includes a cleaning pipe 41 and an air pump 42. The cleaning pipe 41 is connected horizontally and fixed to the base 1 via a support rod. Two sets of air pumps 42 are fixed to the upper and lower sides of the cleaning pipe 41, respectively. The output end of the air pump 42 extends into the cleaning pipe 41 and is fixed with a diverting air box 43. The diverting air box 43 has an array of air holes on the side away from the air pump 42 to facilitate uniform air blowing onto the surface of the flexible circuit board. Dust collection boxes 44 are provided above and below the cleaning pipe 41. Dust collection pipes 45 are fixed on the side of the dust collection box 44 closest to the cleaning pipe 41 and are symmetrically distributed horizontally, with the dust collection pipes 45 extending into the cleaning pipe 41. Inside the dust collection box 44, a fan 46 is bolted to the side wall away from the cleaning pipe 41. Inside the dust collection box 44, a dust filter plate 47 for filtering and intercepting dust in the air is bolted to the side wall. Inside the cleaning pipe 41, cleaning felt rollers 48 are rotatably connected to both the left and right sides and are distributed vertically and vertically for cleaning the surface of the flexible circuit board. When the flexible circuit board passes through the cleaning pipe 41 during the conveying process, the air pump 42 blows air evenly on the surface of the flexible circuit board to blow away the dust and impurities adhering to it. At the same time, the fan 46 draws air into the dust collection box 44 so that the dust scattered inside the cleaning pipe 41 is sucked into the dust collection box 44 by the suction pipe 45.

[0043] The circuit board limiting and guiding mechanism includes a base plate 49 and a concave plate 50. The base plate 49 is fixed above the base 1 by a support rod. The concave plate 50 is located above the base plate 49 and is driven to rise and fall by a lifting adjustment mechanism. One-way screws 51 are threaded through both the front and rear side walls of the concave plate 50. A throttle is fixed to the opposite end of each of the two sets of one-way screws 51 by bolts and is driven to rotate by the throttle. A limit plate 52 is rotatably connected to the opposite end of each of the two sets of one-way screws 51 by bearings. Limit rods 53 are symmetrically fixed on the side of the limit plate 52 closest to the one-way screws 51. The limiting rod 53 slides through the concave plate 50 and limits the limiting plate 52. The two sets of limiting plates 52 are rotatably connected to the support rollers 54 for supporting the flexible circuit board through bearings on opposite sides. The concave plate 50 is driven to rise to an appropriate height by the lifting and adjusting mechanism, which can provide different support heights and tensions for the flexible circuit board. The one-way screw 51 is driven to rotate and move by rotating the throttle. During the rotation and displacement of the one-way screw 51, the limiting plate 52 is moved synchronously, thereby adapting to the limiting and guiding of flexible circuit boards of different widths.

[0044] A cutting frame 55 is welded and fixed to the right side of the concave plate 50. A second cylinder 56 is fixed to the top of the cutting frame 55. The output end of the second cylinder 56 is located inside the cutting frame 55 and a cutting blade 57 is fixed thereto by bolts. A cutting groove adapted to the cutting blade 57 is opened at the bottom of the inner side of the cutting frame 55. The cutting blade 57 is driven to descend by the second cylinder 56 and cut the flexible circuit board, which is convenient for cutting after winding.

[0045] The lifting and adjusting mechanism includes a threaded tube 58 and a threaded rod 59. The threaded tube 58 is rotatably connected to the top of the base plate 49 via a bearing, and the threaded rod 59 is fixed to the bottom of the concave plate 50. The lower part of the threaded rod 59 is threadedly connected to the inside of the threaded tube 58. A sleeve 60 is symmetrically fixed to the bottom of the concave plate 50. A slide rod 61 is slidably provided inside the sleeve 60 and is fixed to the top of the base plate 49, which limits the concave plate 50 and keeps it stable during lifting and lowering. The lifting and lowering adjustment of the concave plate 50 can be achieved by rotating the threaded tube 58 to adjust the extension length of the threaded rod 59.

[0046] When flexible circuit boards need to be wound into a cylindrical shape during the manufacturing process, the flexible circuit board to be wound is conveyed from left to right by the conveyor 2. The right end of the flexible circuit board passes through the circuit board pre-cleaning mechanism and the circuit board limiting guide mechanism in sequence, and finally extends between the two sets of winding boxes 9. At this time, the two sets of clamping plates 12 are separated. The right end of the flexible circuit board is placed between the two sets of clamping plates 12. Then, the clamping jaws 11 on the winding box 9 are driven by the jaw drive mechanism to move away from the clamping plates 12 to form an approximately cylindrical structure as the winding roller of the flexible circuit board. While the jaws 11 move outward, the two sets of clamping plates 12 are driven by the gear transmission mechanism. The components will move towards each other and clamp the right end of the flexible circuit board, achieving automated pre-fixation before winding. Then, the winding motor 7 is started to drive the winding roller composed of the mounting base 8, winding box 9 and arc-shaped gripper 11 to rotate. While the winding roller composed of arc-shaped gripper 11 rotates, it realizes the winding of the flexible circuit board (since the arc-shaped gripper 11 is located on both sides of the flexible circuit board, it will not put pressure on the precision circuit and protruding components on it). After the flexible circuit board on the current arc-shaped gripper 11 is wound up, a flexible circuit board roll is formed. The second cylinder 56 drives the cutting knife 57 to cut the flexible circuit board and glue the left end of the wound flexible circuit board to the outer surface of the flexible circuit board roll, thus completing the winding of the flexible circuit board.

[0047] After winding is complete, unloading is required. At this point, the rotary adjustment mechanism drives the rotating plate 4 to rotate 180 degrees clockwise, rotating the winding box 9, originally located on the right side of the rotating plate 4, to the left side. The winding process is repeated to continue winding the subsequent flexible circuit boards. Meanwhile, the winding box 9, originally located on the left side of the rotating plate 4, along with the flexible circuit board roll, rotates to the right side (for unloading or maintenance, without stopping the machine). For the flexible circuit board roll now located on the right side, the gripper drive mechanism drives the arc-shaped grippers 11 on the right winding box 9 to... The flexible circuit board roll is displaced towards the side closer to the clamping plate 12, causing the arc-shaped clamping claw 11 to separate from the inside of the flexible circuit board roll. At the same time, the two symmetrically distributed clamping plates 12 will also separate under the action of the gear transmission mechanism, releasing the clamping of the flexible circuit board end. Then, the two sets of support plates 6 are driven to move in opposite directions by the spacing adjustment mechanism until the arc-shaped clamping claw 11 is disengaged from the inside of the flexible circuit board roll, thus completing the automated and convenient unloading of the flexible circuit board roll. After unloading, the inner end of the flexible circuit board roll is bonded to the inner surface of the flexible circuit board roll, thus obtaining the finished flexible circuit board roll.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flexible circuit board winding system, comprising a base (1), characterized in that: The base (1) has a conveyor (2) and a concave frame (3) fixed on its top two sides respectively. A circuit board pre-cleaning mechanism and a circuit board limiting guide mechanism are provided between the conveyor (2) and the concave frame (3). The concave frame (3) has a rotating plate (4) driven to rotate by a rotation adjustment mechanism on its inner side. A drive box (5) is fixed on both sides of the rotating plate (4). The drive box (5) is symmetrically provided with a support plate (6) driven to move by a spacing adjustment mechanism on the side away from the rotating plate (4). The two sets of support plates (6) are rotatably connected to a mounting seat driven to rotate by a winding motor (7) on opposite sides. 8) A winding box (9) positioned by an elastic snap-fit ​​mechanism is fitted on the side of the mounting base (8) away from the support plate (6). An annular baffle (10) that fits against the mounting base (8) is fixed on the outer wall of the winding box (9). Four sets of symmetrically distributed arc-shaped clamps (11) are slidably provided on the side of the winding box (9) away from the support plate (6) and driven by a clamping mechanism. Clamping plates (12) are symmetrically provided between the upper and lower sets of arc-shaped clamps (11). The two sets of clamping plates (12) are linked with the upper and lower sets of arc-shaped clamps (11) through a gear transmission mechanism and their displacement directions are opposite.

2. The flexible circuit board winding system according to claim 1, characterized in that: The gripper drive mechanism includes a first cylinder (13) fixed to the side wall of the winding box (9) away from the arc-shaped gripper (11) and a first slider (14) fixed to the end of the arc-shaped gripper (11) near the winding box (9). A push block (15) is fixed to the output end of the first cylinder (13). The end of the first slider (14) away from the arc-shaped gripper (11) slides through into the interior of the winding box (9) and is hinged to the push block (15) through the linkage rod (16). A limiting protrusion (17) is fixed to the side of the first slider (14) that contacts the winding box (9). A limiting groove (18) adapted to the limiting protrusion (17) is provided on the side of the winding box (9) that contacts the first slider (14).

3. The flexible circuit board winding system according to claim 2, characterized in that: The gear transmission mechanism includes a first rack (19) fixed to the opposite side wall of the upper and lower sets of the first sliders (14) and a second slider (20) fixed to the end of the clamping plate (12) near the winding box (9). The end of the second slider (20) away from the clamping plate (12) slides through into the winding box (9) and is fixed with a second rack (21). A transmission gear (22) rotatably connected to the inside of the winding box (9) meshes between the first rack (19) and the second rack (21).

4. The flexible circuit board winding system according to claim 1, characterized in that: The annular baffle (10) is symmetrically fixed with positioning protrusions (23) on the side near the mounting base (8). The mounting base (8) is symmetrically provided with limiting holes (24) that are adapted to the positioning protrusions (23) on the side near the annular baffle (10). The support plate (6) and the mounting base (8) are respectively fixed with an outer support ring (25) and an inner support ring (26) on opposite side walls. The outer wall of the inner support ring (26) is provided with support balls (27) that are equidistant from each other and contact the inner wall of the outer support ring (25).

5. A flexible circuit board winding system according to claim 1, characterized in that: The elastic snap-fit ​​mechanism includes a positioning pin (28) that slides through the upper and lower sides of the mounting base (8) and a socket (29) that is opened at the upper and lower ends of the winding box (9) and is adapted to the positioning pin (28). The mounting base (8) has symmetrical cavities (30) adapted to the positioning pin (28) inside. A baffle (31) is fixed on one side of the positioning pin (28) located in the cavity (30). A limit spring (32) is connected between the inner wall of the cavity (30) away from the winding box (9) and the baffle (31).

6. The flexible circuit board winding system according to claim 1, characterized in that: The spacing adjustment mechanism includes a bidirectional lead screw (34) rotatably connected inside the drive box (5) and driven to rotate by a servo motor (33) and a threaded plate (35) threaded onto both sides of the bidirectional lead screw (34). The end of the threaded plate (35) away from the rotating plate (4) slides through to the outside of the drive box (5) and is fixedly connected to the support plate (6).

7. A flexible circuit board winding system according to claim 1, characterized in that: The rotation adjustment mechanism includes a transmission box (36) fixed to the outer wall of the concave frame (3) and a rotary motor (37) fixed to the outer wall of the transmission box (36). The output end of the rotary motor (37) passes through the transmission box (36) through a bearing and is fixed with a drive sprocket (38). Both ends of the rotating plate (4) are fixed with a rotating shaft (39) that is rotatably connected to the concave frame (3). The rotating shaft (39) on the side closer to the transmission box (36) passes through the transmission box (36) through a bearing and is fixed with a driven sprocket (40) that is rotatably connected to the drive sprocket (38).

8. A flexible circuit board winding system according to claim 1, characterized in that: The circuit board pre-cleaning mechanism includes a cleaning pipe (41) fixed above the base (1) and an air pump (42) fixed on the upper and lower sides of the cleaning pipe (41). The output end of the air pump (42) passes through the inside of the cleaning pipe (41) and is fixed with a diversion air box (43). Dust collection boxes (44) are provided above and below the cleaning pipe (41). Dust collection pipes (45) that pass through the cleaning pipe (41) are symmetrically fixed on opposite sides of the two sets of dust collection boxes (44). Exhaust fans (46) are fixed on opposite sides of the two sets of dust collection boxes (44). Dust filter plates (47) are fixed inside the dust collection boxes (44). Cleaning felt rollers (48) that are symmetrically distributed in the upper and lower sides are rotatably connected to both sides inside the cleaning pipe (41).

9. A flexible circuit board winding system according to claim 1, characterized in that: The circuit board limiting and guiding mechanism includes a base plate (49) fixed above the base (1) and a concave plate (50) located above the base plate (49) and driven to rise and fall by a lifting adjustment mechanism. The front and rear side walls of the concave plate (50) are threaded with one-way screws (51) driven to rotate by a throttle. The two sets of one-way screws (51) are rotatably connected to a limiting plate (52) at opposite ends. The limiting plate (52) is symmetrically fixed with a limiting rod (53) that slides through the concave plate (50) on the side of the limiting plate (52) near the one-way screw (51). The two sets of limiting plates (52) are rotatably connected to a support roller (54) on opposite sides. The concave plate (50) is fixed with a cutting frame (55) on the side of the concave frame (3). The inner side of the cutting frame (55) is provided with a cutting blade (57) driven to rise and fall by a second cylinder (56).

10. A flexible circuit board winding system according to claim 9, characterized in that: The lifting and adjusting mechanism includes a threaded tube (58) rotatably connected to the top of the base plate (49) and a threaded rod (59) fixed to the bottom of the concave plate (50). The lower part of the threaded rod (59) is threadedly connected to the threaded tube (58). A sleeve (60) is symmetrically fixed to the bottom of the concave plate (50). A sliding rod (61) fixed to the top of the base plate (49) is slidably provided inside the sleeve (60).

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