Flexible circuit board feeding device

Abstract

The utility model discloses a flexible circuit board feeding device, including frame, cylinder conveying component, central guide plate subassembly, lifting frame subassembly and linkage jacking structure, wherein, cylinder conveying component includes a plurality of interval arrangement's cylinder along the direction of conveyance, and the axis of cylinder is along transverse to set, central guide plate subassembly includes two symmetrical setting in the both sides of cylinder conveying component's guide plate, and the guide plate is through the guide rail sliding block movable setting on the frame, is equipped with the drive mechanism of can drive two guide plates along the transverse synchronous and moves to each other or opposite on the frame, lifting frame subassembly includes a plurality of interval setting and being located at the clearance of adjacent cylinder lifting frame along the direction of conveyance, and the lifting frame is up and down movable setting on the frame, and the upper end of lifting frame is rotatably installed with a plurality of gyro wheel, and the rotation direction of gyro wheel is perpendicular to set with the rotation direction of cylinder, linkage jacking structure is connected in guide plate and lifting frame, makes the synchronous jacking lifting frame when the guide plate is centrally active transmission.

Description

Technical Field

[0001] This utility model specifically relates to a flexible circuit board feeding device. Background Technology

[0002] Flexible printed circuits (FPCs) are widely used in consumer electronics, automotive electronics, and medical devices due to their thinness, flexibility, and high wiring density. In the manufacturing process of FPCs, transportation is one of the key steps to ensure product quality. Because FPCs are soft, thin (typically 0.1-0.3mm), and easily scratched, traditional roller conveyors present several technical challenges during transportation: Existing roller conveyors often use guide plates on both sides to center the FPCs, but when the guide plates are in direct contact with the FPC edges, excessive friction can easily cause scratches or creases on the FPC edges; in some equipment, the guide plates can only achieve unidirectional centering adjustment, and during the adjustment process, the FPC always slides against the roller surface. Due to the static friction between the roller and the FPC, local wrinkles or positional shifts can easily occur, affecting the positioning accuracy of subsequent processes (such as inspection and welding). Utility Model Content

[0003] In view of the deficiencies of the existing technology, the technical problem to be solved by this utility model is to provide a flexible circuit board feeding device.

[0004] A flexible circuit board feeding device includes a frame, a roller conveyor assembly, a centering guide plate assembly, a lifting frame assembly, and a linkage lifting structure. The roller conveyor assembly includes multiple rollers spaced apart along the conveying direction, with the roller axes arranged laterally. The centering guide plate assembly includes two guide plates symmetrically arranged on both sides of the roller conveyor assembly. The guide plates are movably mounted on the frame via guide rail sliders. A drive mechanism on the frame enables the two guide plates to move synchronously towards or away from each other laterally. The lifting frame assembly includes multiple lifting frames spaced apart along the conveying direction and located at the gaps between adjacent rollers. The lifting frames are movably mounted vertically on the frame, and several rollers are rotatably mounted on the upper end of each lifting frame. The rotation direction of the rollers is perpendicular to the rotation direction of the rollers. The linkage lifting structure connects the guide plates and the lifting frames, so that when the guide plates move in the center, the lifting frames are synchronously lifted, and the rollers lift the flexible circuit board away from the roller surface.

[0005] In one embodiment, the drive mechanism includes a servo motor, a bidirectional lead screw, a guide shaft, and lead screw nuts. The bidirectional lead screw is rotatably mounted on the frame, with its two ends having opposite thread directions. Two lead screw nuts are respectively threaded into both ends of the bidirectional lead screw and fixedly connected to the guide plate. The axial direction of the guide shaft is coaxial with the axial direction of the bidirectional lead screw. The guide plate is movably mounted on the guide shaft via a linear bearing. The servo motor is connected to the bidirectional lead screw via a coupling.

[0006] In one embodiment, the linkage lifting structure includes a flange disposed on one side of the guide plate, and first guide ramps are respectively provided on both sides of the lifting frame. A second guide ramp is provided on the flange that can cooperate and abut with the first guide ramp. When the flange moves towards the lifting frame, the second guide ramp cooperates with the first guide ramp to cause the lifting frame to move upward relative to the frame.

[0007] In one embodiment, the guide plate is arranged in a ring shape, and a relief groove is provided on the upper side wall of its inner ring corresponding to the lifting frame.

[0008] In one embodiment, the outer peripheral surface of the roller is covered with a silicone layer.

[0009] In one embodiment, the frame is provided with a vertical shaft, and the lifting frame is movably mounted on the vertical shaft via a linear bearing.

[0010] In one embodiment, the roller conveyor assembly further includes a second drive mechanism, which includes a drive motor and a chain. Each roller is provided with a corresponding sprocket, and the chain drive is connected between several sprockets. The drive shaft of the drive motor is connected to one end of the roller.

[0011] In one embodiment, the rack is equipped with a photoelectric sensor for detecting the position of the flexible circuit board.

[0012] In summary, the advantages of this utility model over the prior art are:

[0013] This invention, through the cooperation of a centering guide plate assembly and a drive mechanism, enables two guide plates to move synchronously in opposite directions or laterally, automatically correcting the lateral position of the flexible circuit board (FPC), ensuring accurate positioning during transport, and reducing alignment errors in subsequent processing. Furthermore, a linkage lifting structure links the centering movement of the guide plates with the lifting action of the lifting frame. When the guide plates are adjusted for centering, the lifting frame lifts synchronously, causing the FPC to detach from the roller surface and be transported by rollers. This eliminates the need for an additional drive device, simplifying the equipment structure and improving transport efficiency. Simultaneously, the passive rotation of the rollers assists in adjusting the lateral position of the FPC, reducing sliding friction between the FPC and the guide plates, avoiding wrinkles caused by direct pushing of the guide plates, and significantly improving centering positioning accuracy. Attached image description;

[0015] Figure 1 This is one perspective view of a flexible circuit board feeding device according to one embodiment of the present invention;

[0016] Figure 2 This is a cross-sectional view of a flexible circuit board feeding device according to one embodiment of the present invention;

[0017] Figure 3 This is a second perspective view of a flexible circuit board feeding device according to one embodiment of the present invention. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0019] like Figures 1 to 3 The present invention preferably provides a flexible circuit board feeding device, including a frame 1, a roller conveyor assembly, a centering guide plate assembly, a lifting frame assembly, and a linkage lifting structure 2; wherein, the roller conveyor assembly includes a plurality of rollers 3 arranged at intervals along the conveying direction, and the axis of the rollers 3 is arranged transversely; the centering guide plate assembly includes two guide plates 4 symmetrically arranged on both sides of the roller conveyor assembly, and the guide plates 4 are movably mounted on the frame 1 via guide rail sliders, and the frame 1 is provided with a mechanism to drive the two guide plates 4 along the conveying direction. A drive mechanism 5 that moves laterally synchronously towards or away from each other; the lifting frame assembly includes multiple lifting frames 6 spaced apart along the conveying direction and located at the gaps between adjacent rollers 3. The lifting frames 6 are movably mounted on the frame 1. Several rollers 7 are rotatably mounted on the upper end of the lifting frames 6. The rotation direction of the rollers 7 is perpendicular to the rotation direction of the rollers 3. The linkage lifting structure 2 is connected to the guide plate 4 and the lifting frame 6, so that when the guide plate 4 moves in the center, the transmission synchronously lifts the lifting frame 6, and the rollers 7 lift the flexible circuit board away from the surface of the roller 3.

[0020] Specifically, through the cooperation of the centering guide plate assembly and the drive mechanism, the two guide plates can move synchronously in opposite directions or in opposite directions laterally, automatically correcting the lateral position of the flexible circuit board, ensuring accurate positioning during transportation, and reducing alignment errors in subsequent processing. Furthermore, the linkage lifting structure links the centering movement of the guide plates with the lifting action of the lifting frame. When the guide plates are adjusted for centering, the lifting frame lifts synchronously, causing the flexible circuit board to detach from the roller surface and be transported by the rollers. This eliminates the need for an additional drive device, simplifying the equipment structure and improving transportation efficiency. Simultaneously, the passive rotation of the rollers assists in adjusting the lateral position of the FPC, reducing sliding friction between the FPC and the guide plates, avoiding wrinkles in the FPC caused by direct pushing by the guide plates, and significantly improving centering positioning accuracy.

[0021] Furthermore, the drive mechanism 5 includes a servo motor 8, a bidirectional lead screw 9, a guide shaft 10, and lead screw nuts 11. The bidirectional lead screw 9 is rotatably mounted on the frame 1 in a transverse direction, with its two ends having opposite thread directions. The two lead screw nuts 11 are respectively threaded into the two ends of the bidirectional lead screw 9 and fixedly connected to the guide plate 4. The axial direction of the guide shaft 10 is coaxial with the axial direction of the bidirectional lead screw 9. The guide plate 4 is movably sleeved on the guide shaft 10 through a linear bearing. The servo motor 8 is connected to the bidirectional lead screw 9 through a coupling.

[0022] Specifically, the threads at both ends of the bidirectional lead screw have opposite directions of rotation: the left side is a left-hand thread, and the right side is a right-hand thread. The servo motor uses an encoder to precisely control the rotation angle of the bidirectional lead screw, thereby controlling the movement distance of the two guide plates. When the servo motor rotates forward, the bidirectional lead screw drives the two lead screw nuts to move towards each other, and the guide plates synchronously move inward; when the servo motor rotates in reverse, the two lead screw nuts move away from each other, and the guide plates synchronously open outward.

[0023] Furthermore, the linkage lifting structure 2 includes a flange 12 disposed on one side of the guide plate 4, and the lifting frame 6 is provided with a first guide slope 13 on both sides. The flange 12 is provided with a second guide slope 14 that can cooperate and abut with the first guide slope 13. When the flange 12 moves towards the lifting frame 6, the second guide slope 14 cooperates with the first guide slope 13 to cause the lifting frame 6 to move upward relative to the frame 1.

[0024] Specifically, as the guide plate moves inward, the flange gradually approaches the lifting frame. The second guide ramp contacts the first guide ramp and slides relative to it. Utilizing the guiding effect of the ramp, the lateral force of the guide plate is converted into the vertical force of the lifting frame, pushing the lifting frame upward along the frame. When the guide plate reaches its maximum stroke, the lifting height of the lifting frame reaches the preset value (usually 5-10mm), ensuring that the rollers completely lift the circuit board.

[0025] Furthermore, the guide plate 4 is ring-shaped, and a clearance groove 15 is provided on the upper side wall of its inner ring corresponding to the lifting frame 6. Specifically, the guide plate has a clearance groove corresponding to the position of each lifting frame, and the width of the clearance groove is slightly larger than the width of the lifting frame (usually 2-3 mm larger). When the lifting frame is lifted upward, its upper part can pass through the clearance groove, avoiding interference between the guide plate and the lifting frame, and ensuring that the lifting frame can be smoothly raised to the preset height. The edges of the clearance groove are rounded to prevent scratching the flexible circuit board or the lifting frame.

[0026] Furthermore, the outer circumferential surface of the roller 7 is covered with a silicone layer. Specifically, the silicone layer has good elasticity and wear resistance, which can reduce hard contact between the roller and the flexible circuit board, avoiding indentations or scratches on the circuit board surface. At the same time, the coefficient of friction of the silicone layer is moderate, providing sufficient friction to drive the circuit board to turn without causing wrinkles at the edges of the circuit board due to excessive friction. The surface of the silicone layer is matte-finished to reduce the reflective effect on the circuit board surface, facilitating subsequent optical inspection processes.

[0027] Furthermore, the frame 1 is equipped with a vertical shaft 21, and the lifting frame 6 is movably mounted on the vertical shaft 21 via a linear bearing. The cooperation between the vertical shaft and the linear bearing ensures that the lifting frame remains stable and does not wobble during the lifting process, improving the smoothness of circuit board transport.

[0028] Furthermore, the roller conveyor assembly also includes a second drive mechanism, which comprises a drive motor and a chain. Each roller 3 is equipped with a corresponding sprocket, and the chain drive connects several sprockets. The drive shaft of the drive motor is connected to one end of each roller 3. Specifically, the use of chain and sprocket transmission between several rollers is a relatively mature existing technology, and its structural principle will not be described in detail here.

[0029] Furthermore, the frame is equipped with a photoelectric sensor for detecting the position of the flexible circuit board. The photoelectric sensor is a relatively mature existing technology; it is fixed to the upright plate of the frame by a bracket, and its output terminal is electrically connected to a control system (such as a PLC). When the flexible circuit board enters the detection area of ​​the photoelectric sensor at the input terminal, the sensor sends a signal to the control system, and the control system activates the drive mechanism to perform a centering positioning operation.

[0030] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A flexible circuit board feeding device, characterized in that: The system includes a frame (1), a roller conveyor assembly, a centering guide plate assembly, a lifting frame assembly, and a linkage lifting structure (2); wherein, the roller conveyor assembly includes multiple rollers (3) arranged at intervals along the conveying direction, and the axis of the rollers (3) is set in the transverse direction; the centering guide plate assembly includes two guide plates (4) symmetrically arranged on both sides of the roller conveyor assembly, and the guide plates (4) are movably set on the frame (1) by guide rail sliders, and a drive mechanism (5) is provided on the frame (1) to drive the two guide plates (4) to move synchronously towards or away from each other in the transverse direction; the lifting frame assembly includes a linkage lifting structure (2); wherein, the roller conveyor assembly includes multiple rollers (3) arranged at intervals along the conveying direction, and the axis of the rollers (3) is set in the transverse direction; the axis of the rollers (3) is set in the transverse direction; the axis of the roller conveyor assembly includes two guide plates (4) symmetrically arranged on both sides of the roller conveyor assembly, and ... The lifting frame assembly includes multiple lifting frames (6) spaced apart along the conveying direction and located in the gap between adjacent rollers (3). The lifting frames (6) are movably mounted on the frame (1). Several rollers (7) are rotatably mounted on the upper end of the lifting frame (6). The rotation direction of the rollers (7) is perpendicular to the rotation direction of the rollers (3). The linkage lifting structure (2) is connected to the guide plate (4) and the lifting frame (6). When the guide plate (4) moves in the center, the transmission synchronously lifts the lifting frame (6), and the rollers (7) lift the flexible circuit board away from the surface of the roller (3).

2. The flexible circuit board feeding device according to claim 1, characterized in that: The drive mechanism (5) includes a servo motor (8), a bidirectional lead screw (9), a guide shaft (10), and lead screw nuts (11). The bidirectional lead screw (9) is mounted on the frame (1) in a transverse rotational manner, with the threads at both ends of the screw rotating in opposite directions. The two lead screw nuts (11) are respectively threaded to both ends of the bidirectional lead screw (9) and fixedly connected to the guide plate (4). The axial direction of the guide shaft (10) is coaxial with the axial direction of the bidirectional lead screw (9). The guide plate (4) is movably mounted on the guide shaft (10) through a linear bearing. The servo motor (8) is connected to the bidirectional lead screw (9) through a coupling.

3. The flexible circuit board feeding device according to claim 1, characterized in that: The linkage lifting structure (2) includes a flange (12) disposed on one side of the guide plate (4). The lifting frame (6) is provided with a first guide slope (13) on both sides. The flange (12) is provided with a second guide slope (14) that can cooperate with the first guide slope (13). When the flange (12) moves towards the lifting frame (6), the second guide slope (14) cooperates with the first guide slope (13) to make the lifting frame (6) move upward relative to the frame (1).

4. The flexible circuit board feeding device according to claim 3, characterized in that, The guide plate (4) is ring-shaped, and a clearance groove (15) is provided on the upper side wall of its inner ring corresponding to the lifting frame (6).

5. The flexible circuit board feeding device according to claim 1, characterized in that: The outer circumferential surface of the roller (7) is covered with a silicone layer.

6. The flexible circuit board feeding device according to claim 1, characterized in that: The frame (1) is provided with a vertical shaft (21), and the lifting frame (6) is movably mounted on the vertical shaft (21) through a linear bearing.

7. The flexible circuit board feeding device according to claim 1, characterized in that: The roller conveyor assembly also includes a second drive mechanism, which includes a drive motor and a chain. Each roller (3) is provided with a corresponding sprocket, and the chain drive is connected between several sprockets. The drive shaft of the drive motor is connected to one end of the roller (3).

8. The flexible circuit board feeding device according to claim 1, characterized in that: The frame is equipped with photoelectric sensors for detecting the position of the flexible circuit board.

Images