Intelligent control illumination circuit board detection jig

Abstract

The invention discloses an intelligent control lighting circuit board detection jig in the technical field of flexible circuit board detection. The intelligent control lighting circuit board detection jig comprises a supporting frame and a detection mechanism arranged on the supporting frame. The fixed clamp is fixedly mounted on the supporting frame and can clamp one end of the circuit board in a self-driving manner; the fixed clamp comprises a first base fixedly connected with the supporting frame and a first air cylinder distributed on the top of the first base. A mounting plate is fixedly connected to the free end of the first air cylinder, and a pressing roller is rotationally arranged on the mounting plate. The movable clamp is mounted on the support frame in a sliding manner and can automatically clamp the other end of the circuit board; the movable clamp comprises a second base installed on the supporting frame in a sliding mode and a second air cylinder distributed on the top of the second base, a pressing plate is fixedly connected to the free end of the second air cylinder, and the bottom face of the pressing plate is tangent to the bottom end of the pressing roller; according to the invention, the detection efficiency of the flexible circuit board can be greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of flexible circuit board detection, and in particular to an intelligent control lighting circuit board detection fixture. Background Art

[0002] In lighting fixtures, flexible printed circuits (FPCs) are widely used in a variety of lighting products that need to adapt to complex shapes or space limitations, such as LED light strips, curved lighting fixtures, etc. due to their unique flexibility and bendability.

[0003] Visual inspection is a key link in the production of flexible circuit boards. It ensures the quality and reliability of the products. In order to ensure the stability of image acquisition, the camera of the visual inspection system is often installed in a fixed position. Due to the flexibility and bendability of flexible circuit boards, one of the existing inspection methods is to unfold the flexible circuit board and place it on a conveyor belt to be transported to the bottom of the camera for inspection. Although this method can ensure that the flexible circuit board will not be completely deformed during inspection, it can only inspect the side facing the camera. The flexible circuit board needs to be turned over and inspected later. It is easy for some flexible circuit boards to not be turned over due to mistakes, and flow into the next processing station without completing the inspection work. Another inspection method is for workers to fix the flexible circuit board on the inspection fixture. The staff needs to adjust the flexible circuit board to make it flat, and the inspection efficiency is low. When the flexible circuit board is not fully unfolded, the middle part of the flexible circuit board will sag downward, and the camera cannot focus accurately, resulting in inaccurate inspection results.

[0004] Based on this, the present invention designs an intelligent control lighting circuit board detection fixture to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide an intelligent control lighting circuit board detection fixture to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an intelligent control lighting circuit board detection fixture, comprising a support frame, and a detection mechanism arranged on the support frame; also comprising a fixed clamp, which is fixedly mounted on the support frame and can self-drive to clamp one end of the circuit board; the fixed clamp comprises a first base fixedly connected to the support frame, and a first cylinder distributed on the top of the first base; a mounting plate is fixedly connected to the free end of the first cylinder, and a pressure roller is rotatably arranged on the mounting plate; when the first cylinder contracts, the pressure roller can be driven to move downward through the mounting plate to clamp one end of the circuit board; a dynamic clamp, which is slidably mounted on the support frame and can automatically clamp the other end of the circuit board; the dynamic clamp comprises a second base slidably mounted on the support frame, and a second cylinder distributed on the top of the second base, a pressure plate is fixedly connected to the free end of the second cylinder, and the bottom surface of the pressure plate is close to the pressure plate. The bottom ends of the rollers are tangent; when the second cylinder contracts, it can drive the pressure plate to move downward to clamp the other end of the circuit board; the driving mechanism is arranged on the front side of the support frame, and after the movable clamp and the fixed clamp clamp the circuit board, the driving mechanism will drive the movable clamp to move relative to the fixed clamp; the controller is arranged on the inner sides of the fixed clamp and the movable clamp, and can control the moving distance of the movable clamp relative to the fixed clamp, so that the circuit board can remain flat when it moves to the inspection station; the controller includes a shell fixedly installed in the first base, and a roller rotatably installed in the shell, a steel ruler is wound on the roller, and a ruler spring is also arranged in the roller, the outer end of the ruler spring is fixedly connected to the inner end of the steel ruler, the outer end of the steel ruler passes through the shell and the first base and is fixedly connected to the second base; when the second base moves, it can drive one end of the steel ruler to move, and the maximum length that the steel ruler can extend is equal to the distance that the movable clamp can move.

[0007] As a further solution of the present invention, the controller also includes a winding roller rotatably installed in the second base, and a worm wheel and a worm for controlling the rotation of the winding roller; the steel ruler is fixed on the winding roller at one end away from the roller, the worm wheel is fixed on the rotating shaft of the winding roller, and the worm is rotatably installed in the second base and one end extends outside the second base.

[0008] As a further solution of the present invention, a roller is fixedly connected to the rotating shaft of the drum, and the roller is sleeved with a first gear; the first gear is connected to the roller through a pressure spring; the first gear is meshed with a first rack rod, and the first rack rod is slidably connected to the first base in the vertical direction; when the drum rotates, the roller can drive the first gear to rotate through the pressure spring, and when the drum and the roller stop rotating, the first gear can reverse relative to the roller under the compression of the pressure spring; an oblique sliding groove is provided on the mounting plate, and the pressure roller is rotatably connected to a slide plate through a bearing; the slide plate and the first rack rod are fixedly connected by a first traction rope; when the movable clamp drives one end of the circuit board to move, the slide plate can drive the pressure roller to move obliquely upward to the side close to the movable clamp, so that the clamping force of the pressure roller on the circuit board is reduced; when the movable clamp stops moving, the slide plate can drive the pressure roller to move obliquely downward to the side away from the movable clamp, so that the pressure roller pulls one end of the circuit board to move away from the end of the movable clamp and presses the circuit board.

[0009] As a further solution of the present invention, a second gear is fixedly connected to the rotating shaft of the pressure roller, and the second gear is meshed with a second rack rod. The second rack rod is fixedly connected to the mounting plate and is arranged parallel to the oblique slide groove.

[0010] As a further solution of the present invention, the second base is slidably connected to a baffle in the vertical direction, and the baffle is located on the side of the pressure plate away from the pressure roller; the baffle is hinged to a connecting rod, and the connecting rod is hinged to a sliding rod, and the sliding rod is slidably connected to the second base in the horizontal direction, and the sliding rod extends to the outside of the second base near one end of the first base.

[0011] As a further solution of the present invention, pads made of soft material are installed on the outside of the pressure roller and the bottom of the pressure plate.

[0012] As a further solution of the present invention, belt conveyors are provided on both sides of the support frame. The belt conveyor on the left is used to convey the circuit board to the fixed clamp and the movable clamp, and the belt conveyor on the right is used to output the tested circuit board.

[0013] As a further solution of the present invention, the driving mechanism includes a first sprocket drivingly connected to the left belt conveyor, the first sprocket is connected to the second sprocket and the tensioning wheel through a chain transmission, a slider is mounted on the rotating shaft of the second sprocket, the slider is slidably connected to the second base in the vertical direction, and the slider is fixedly connected to the pressure plate through a connecting frame; a third gear is fixedly connected to the rotating shaft of the second sprocket, a third rack rod that can mesh with the third gear is provided below the third gear, and the third rack rod is fixedly mounted on the side wall of the support frame; when the pressure plate moves downward to press the circuit board, the pressure plate can drive the third gear to move downward and mesh with the third rack rod through the connecting frame and the slider.

[0014] As a further solution of the present invention, the detection mechanism includes two cameras installed on a support frame, and the two cameras are respectively located on the upper and lower sides of the fixed fixture and the movable fixture, and are arranged symmetrically with respect to the fixed fixture and the movable fixture.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention arranges a fixed clamp and a movable clamp so that the movable clamp can cooperate with the fixed clamp to drive the flexible circuit board to move, and the fixed clamp can apply a certain pressure to the flexible circuit board during the movement of the flexible circuit board to ensure that the flexible circuit board will not bend; through the arrangement of the controller, the controller can control the moving distance of the movable clamp relative to the fixed clamp, so that when the movable clamp moves to the farthest position, the fixed clamp and the movable clamp can just clamp the two ends of the flexible circuit board, so that the flexible circuit board can be in a flat state during detection, and the flexible circuit board can be detected more accurately; and the controller is arranged in the first base and the second base, and is less affected by external interference, so that the controller can work more stably and accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the fixed clamp and the movable clamp of the present invention;

[0019] Figure 3 This is an exploded schematic diagram of the controller structure of the present invention;

[0020] Figure 4 It is a schematic diagram of the structure of the drum, the rotating roller, the first gear, the pressure spring, the first rack rod and the first traction rope of the present invention;

[0021] Figure 5 It is a schematic diagram of the structure of the oblique slideway, the slide plate, the first traction rope, the second gear and the second rack rod of the present invention;

[0022] Figure 6 It is a schematic cross-sectional view of part of the structure of the present invention;

[0023] Figure 7 It is a schematic diagram of the structure of the belt conveyor and the driving mechanism of the present invention.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] Support frame 1, detection mechanism 2, fixed clamp 3, first base 4, first cylinder 5, mounting plate 6, pressure roller 7, movable clamp 8, second base 9, second cylinder 10, pressure plate 11, controller 12, housing 13, drum 14, steel ruler 15, ruler spring 16, winding roller 17, worm gear 18, worm 19, rotating roller 20, first gear 21, pressure spring 22, first rack rod 23, oblique slide 24, slide plate 25, first traction rope 26, second gear 27, second rack rod 28, baffle 29, connecting rod 30, slide bar 31, belt conveyor 32, first sprocket 33, chain 34, second sprocket 35, tensioning wheel 36, slider 37, connecting frame 38, third gear 39, third rack rod 40. DETAILED DESCRIPTION

[0026] See also Figure 1-Figure 7 The present invention provides a technical solution: an intelligent control lighting circuit board detection fixture, comprising a support frame 1, and a detection mechanism 2 arranged on the support frame 1; also comprising a fixed clamp 3, which is fixedly mounted on the support frame 1 and can self-drive to clamp one end of the circuit board; the fixed clamp 3 comprises a first base 4 fixedly connected to the support frame 1, and a first cylinder 5 distributed on the top of the first base 4; a mounting plate 6 is fixedly connected to the free end of the first cylinder 5, and a pressure roller 7 is rotatably arranged on the mounting plate 6; when the first cylinder 5 contracts, the pressure roller 7 can be driven to move downward through the mounting plate 6 to clamp one end of the circuit board; a dynamic clamp 8 is slidably mounted on the support frame 1 and can automatically clamp the other end of the circuit board; the dynamic clamp 8 comprises a second base 9 slidably mounted on the support frame 1, and a second cylinder 10 distributed on the top of the second base 9, a pressure plate 11 is fixedly connected to the free end of the second cylinder 10, and the bottom surface of the pressure plate 11 is tangent to the bottom end of the pressure roller 7; when the second cylinder 5 contracts, the pressure roller 7 can be driven to move downward through the mounting plate 6 to clamp one end of the circuit board; When the cylinder 10 contracts, it can drive the pressure plate 11 to move downward to clamp the other end of the circuit board; the driving mechanism is arranged on the front side of the support frame 1, and after the movable clamp 8 and the fixed clamp 3 clamp the circuit board, the driving mechanism will drive the movable clamp 8 to move relative to the fixed clamp 3; the controller 12 is arranged on the inner side of the fixed clamp 3 and the movable clamp 8, and can control the moving distance of the movable clamp 8 relative to the fixed clamp 3, so that the circuit board can remain flat when it moves to the inspection station; the controller 12 includes a shell 13 fixedly installed in the first base 4, and a roller 14 rotatably installed in the shell 13, a steel ruler 15 is wound on the roller 14, and a ruler spring 16 is also arranged in the roller 14, the outer end of the ruler spring 16 is fixedly connected to the inner end of the steel ruler 15, the outer end of the steel ruler 15 passes through the shell 13 and the first base 4 and is fixedly connected to the second base 9; when the second base 9 moves, it can drive one end of the steel ruler 15 to move, and the maximum length that the steel ruler 15 can extend is equal to the distance that the movable clamp 8 can move.

[0027] During operation, when visual inspection of the flexible circuit board is required, the staff puts one end of the flexible circuit board through the fixed fixture 3 and places it on the top of the second base 9; then the first cylinder 5 and the second cylinder 10 contract synchronously, and the first cylinder 5 and the second cylinder 10 will respectively drive the mounting plate 6 and the pressing plate 11 to move downward, and the mounting plate 6 will drive the pressing roller 7 to move downward synchronously; the bottom end of the pressing roller 7 is tangent to the bottom surface of the pressing plate 11, so when the pressing plate 11 presses the right end of the flexible circuit board, the pressing roller 7 is also pressed on the flexible circuit board; then the driving mechanism can drive the movable fixture 8 to move right, and the process of the movable fixture 8 moving right The movable clamp 8 will drive the end of the steel ruler 15 to move synchronously to the right, and the movable clamp 8 will drive the end of the flexible circuit board to move synchronously to the right. When the flexible circuit board moves on the first base 4, it can drive the pressure roller 7 to rotate, and the pressure roller 7 will not hinder the movement of the flexible circuit board, and the pressure roller 7 can apply a certain pressure to the flexible circuit board, and the flexible circuit board can remain flat during the movement. It should be noted that the extended length of the steel ruler 15 is the same as the length of the flexible circuit board. When the second base 9 drives the steel ruler 15 to stretch to the maximum length, the left end of the flexible circuit board is just located on the first base 4, and at this time, the pressure roller 7 is just pressed on the flexible circuit board The left end top; then the detection mechanism 2 can collect images of the top and bottom surfaces of the flexible circuit board; after the detection is completed, the first cylinder 5 and the second cylinder 10 extend upward again, so that the pressure roller 7 and the pressure plate 11 cancel the fixation of the flexible circuit board; after the flexible circuit board is removed, the driving mechanism drives the movable clamp 8 to move back to the initial state to the left, and the steel ruler 15 will be wound onto the roller 14 again under the action of the ruler spring 16; in this embodiment, the driving mechanism can be a cylinder, a linear motor, etc.; through the setting of the fixed clamp 3 and the movable clamp 8 of the present invention, the movable clamp 8 can cooperate with the fixed clamp 3 to drive the flexible circuit board to move, and the flexible circuit The fixed clamp 3 can apply a certain pressure to the board during its movement to ensure that the flexible circuit board will not bend; through the setting of the controller 12, the controller 12 can control the moving distance of the movable clamp 8 relative to the fixed clamp 3, and can ensure that when the movable clamp 8 moves to the farthest position, the fixed clamp 3 and the movable clamp 8 can just clamp the two ends of the flexible circuit board, and can ensure that the flexible circuit board is in a flat state during detection, so that the flexible circuit board can be detected more accurately; and the controller 12 is set in the first base 4 and the second base 9, and is less affected by external interference, which can ensure that the controller 12 works more stably and accurately.

[0028] Specifically, if Figure 2 and Figure 3 The controller 12 also includes a winding roller 17 rotatably installed in the second base 9, and a worm gear 18 and a worm 19 for controlling the rotation of the winding roller 17; the steel ruler 15 is fixed on the winding roller 17 at one end away from the drum 14, the worm gear 18 is fixed on the rotating shaft of the winding roller 17, and the worm 19 is rotatably installed in the second base 9 and one end extends outside the second base 9.

[0029] During operation, the rotation of the worm 19 can drive the worm wheel 18 to rotate, and the worm wheel 18 can drive the winding roller 17 to rotate synchronously. The winding roller 17 can reel in or release the steel ruler 15. When the winding roller 17 reels the steel ruler 15, the distance that the second base 9 can move to the right relative to the first base 4 becomes smaller. When the winding roller 17 releases the steel ruler 15, the distance that the second base 9 can move to the right relative to the first base 4 becomes larger. By setting the worm wheel 18 and the worm 19, the moving distance of the second base 9 relative to the first base 4 can be adjusted, and the length of the flexible circuit board clamped by the fixed clamp 3 and the movable clamp 8 can be controlled, so that it is suitable for the detection of flexible circuit boards of different lengths. And the worm 18 and the worm 19 can be self-locking after the adjustment is completed, which can ensure the stability of the controller 12 when it is working.

[0030] Specifically, Figure 4 and Figure 5 As shown, a roller 20 is fixedly connected to the rotating shaft of the drum 14, and the roller 20 is sleeved with a first gear 21; the first gear 21 is connected to the roller 20 through a pressure spring 22; the first gear 21 is meshed with a first rack rod 23, and the first rack rod 23 is slidably connected to the first base 4 in the vertical direction; when the drum 14 rotates, the roller 20 can drive the first gear 21 to rotate through the pressure spring 22, and when the drum 14 and the roller 20 stop rotating, the first gear 21 can reverse relative to the roller 20 under the compression of the pressure spring 22; An oblique sliding groove 24 is provided on the mounting plate 6, and the pressure roller 7 is rotatably connected to a slide plate 25 through a bearing; the slide plate 25 is fixedly connected to the first rack rod 23 through a first traction rope 26; when the movable clamp 8 drives one end of the circuit board to move, the slide plate 25 can drive the pressure roller 7 to move obliquely upward toward the side close to the movable clamp 8, so that the clamping force of the pressure roller 7 on the circuit board is reduced; when the movable clamp 8 stops moving, the slide plate 25 can drive the pressure roller 7 to move obliquely downward away from the movable clamp 8, so that the pressure roller 7 pulls one end of the circuit board to move away from the end of the movable clamp 8 and presses the circuit board.

[0031] During operation, the second base 9 drives one end of the steel ruler 15 to move to the right. When the steel ruler 15 is extended, it drives the roller 14 to rotate, and the roller 14 drives the roller 20 to rotate synchronously. Figure 4As shown, the roller 20 will drive the first gear 21 to rotate counterclockwise through the pressure spring 22, and the first gear 21 will drive the first rack rod 23 to move upward until the first rack rod 23 reaches its physical or design limit position. After the first rack rod 23 moves upward to the limit position, the first rack rod 23 stops moving or reaches the end of the stroke. At this time, the first rack rod 23 cannot move further due to its physical structure or design limitations. Thereafter, the first gear 21 continues to rotate and will no longer drive the first rack rod 18 to move. The first rack rod 18 stops at a certain height; when the first rack rod 18 moves upward, it will drive the slide plate 25 to move upward through the first traction rope 26; the slide plate 25 will slide upward in the oblique slide groove 24, as shown in FIG. Figure 5 As shown, since the top of the oblique slide groove 24 is set on the side close to the second base 9, when the slide plate 25 moves upward in the oblique slide groove 24, it will synchronously move toward the side close to the movable clamp 8; the slide plate 25 will drive the pressure roller 7 to move synchronously, and at this time the pressure of the pressure roller 7 on the flexible circuit board is slightly weakened, which can make the movable clamp 8 drive the flexible circuit board to move more smoothly; when the movable clamp 8 moves to the farthest position to the right and stops moving, the slide plate 25 will move downward under the elastic force of the spring and its own gravity, and under the action of the oblique slide groove 24, the slide plate 25 will drive the pressure roller 7 to move downward away from the movable clamp 8 (i.e., the lower left side), the downward movement of the pressure roller 7 can press the flexible circuit board, and at the same time, the movement to the left can pull the left end of the flexible circuit board to the left, which can better ensure that the fixed clamp 3 and the movable clamp 8 fix the flexible circuit board when the flexible circuit board is in a flat state.

[0032] Specifically, Figure 5 As shown, a second gear 27 is fixedly connected to the rotating shaft of the pressure roller 7 , and a second rack rod 28 is meshed with the second gear 27 . The second rack rod 28 is fixedly connected to the mounting plate 6 and is arranged parallel to the oblique slide groove 24 .

[0033] During operation, when the movable clamp 8 drives one end of the flexible circuit board to move to the farthest position to the right, when the pressure roller 7 moves to the lower left, the second rack rod 28 drives the second gear 27 to drive the pressure roller 7 to rotate; it should be noted that the rotation direction of the pressure roller 7 when it moves to the lower left is opposite to the direction in which the pressure roller 7 is driven to rotate when the movable clamp 8 drives the flexible circuit board to move to the right; Figure 5 As shown, assuming that when the movable clamp 8 drives the flexible circuit board to move to the right, the pressure roller 7 will rotate counterclockwise under the action of the flexible circuit board. Then, when the left end of the flexible circuit board moves to the first base 4 and the pressure roller 7 moves to the lower left to press the flexible circuit board, the second gear 27 will drive the pressure roller 7 to rotate clockwise. The clockwise rotation of the pressure roller 7 can drive the left end of the flexible circuit board to move to the left, so that the flexible circuit board can be better flattened.

[0034] Specifically, Figure 6As shown, the second base 9 is slidably connected with a baffle 29 in the vertical direction, and the baffle 29 is located on the side of the pressure plate 11 away from the pressure roller 7; the baffle 29 is hinged with a connecting rod 30, and the connecting rod 30 is hinged with a sliding rod 31, and the sliding rod 31 is slidably connected to the second base 9 in the horizontal direction, and the sliding rod 31 extends to the outside of the second base 9 near one end of the first base 4.

[0035] During operation, the baffle 29 can play a positioning role. When the right end of the flexible circuit board is placed on the second base 9, the right side wall can contact the baffle 29; when the second base 9 moves to the right, the baffle 29 will be received inside the second base 9 under the action of its own gravity. After the detection is completed, the baffle 29 will not hinder the output of the flexible circuit board; when the second base 9 moves to the left to a position in contact with the first base 4, the first base 4 will drive the baffle 29 to extend upward again through the sliding rod 31 and the connecting rod 30.

[0036] Specifically, Figure 2 As shown, pads made of soft material are installed on the outside of the pressing roller 7 and the bottom of the pressing plate 11.

[0037] During operation, the pad can be made of materials such as rubber and foam, and the pressure of the pressure roller 7 and the pressure plate 11 on the flexible circuit board can have a certain elasticity, which can better protect the flexible circuit board.

[0038] Specifically, Figure 6 and Figure 7 As shown, the left and right sides of the support frame 1 are provided with belt conveyors 32, the belt conveyor 32 on the left side is used to convey the circuit board to the fixed fixture 3 and the movable fixture 8, and the belt conveyor 32 on the right side is used to output the tested circuit board; the driving mechanism includes a first sprocket 33 connected to the left belt conveyor 32 in a transmission manner, the first sprocket 33 is connected to the second sprocket 35 and the tensioning wheel 36 through a chain 34, and a slider 37 is mounted on the rotating shaft of the second sprocket 35, and the slider 37 It is slidably connected to the second base 9 in the vertical direction, and the slider 37 is fixedly connected to the pressure plate 11 through the connecting frame 38; a third gear 39 is fixedly connected to the rotating shaft of the second sprocket 35, and a third rack rod 40 capable of engaging with the third gear 39 is arranged below the third gear 39, and the third rack rod 40 is fixedly installed on the side wall of the support frame 1; when the pressure plate 11 moves downward to press the circuit board, the pressure plate 11 can drive the third gear 39 to move downward and engage with the third rack rod 40 through the connecting frame 38 and the slider 37.

[0039] During operation, the staff only needs to place the flexible circuit board to be tested on the left belt conveyor 32, and the left belt conveyor 32 will convey the flexible circuit board to the right. After the right end of the flexible circuit board contacts the baffle 29, the belt conveyor 32 temporarily stops working; then the first cylinder 5 and the second cylinder 10 simultaneously drive the pressure roller 7 and the pressure plate 11 to move downward to clamp the flexible circuit board; when the pressure plate 11 moves downward, it will drive the slider 37, the third gear 39 and the second sprocket 35 to move downward synchronously through the connecting frame 38. When the pressure plate 11 presses the flexible circuit board tightly, the third gear 39 moves to the position that is aligned with the pressure roller 7 and the pressure plate 11. The third rack rod 40 is in meshing state; then the belt conveyor 32 on the left can continue to work, and the belt conveyor 32 will drive the second sprocket 35 to rotate through the first sprocket 33 and the chain 34 when working, and the second sprocket 35 will drive the third gear 39 to rotate synchronously, and under the action of the third rack rod 40, the third gear 39 will drive the movable clamp 8 to move right; until the movable clamp 8 moves to the farthest position to the right, and then the belt conveyor 32 on the left can stop working; after the flexible circuit board is detected, the first cylinder 5 and the second cylinder 11 move upward to cancel the pressing roller 7 and the pressing plate 11 To clamp the flexible circuit board, the pressure plate 11 will drive the third gear 39 to move upward synchronously through the connecting frame 38 and the slider 37, and the third gear 39 will be disengaged from the third rack rod 40. Then, the movable clamp 8 can quickly move back to the initial position to the left under the action of the ruler spring 16, and then the next flexible circuit board can be tested; when the movable clamp 8 moves to the left, the right end of the flexible circuit board will fall onto the belt conveyor 32 on the right, and then the belt conveyor 32 on the right can transport the flexible circuit board to the right to the next processing station; it should be noted that the setting method of the tensioning wheel 36 can be based on According to the actual situation, when the movable clamp 8 moves to the right, the tensioning wheel 36 can make the first sprocket 33 better drive the second sprocket 35 to rotate; through the setting of the belt conveyor device and the driving mechanism of the present invention, the belt conveyor device can automatically convey the flexible circuit board to the movable clamp 8, which can greatly improve the detection efficiency of the flexible circuit board; the speed at which the driving mechanism drives the movable clamp 8 to move can be the same as the speed at which the belt conveyor device 32 conveys the flexible circuit board. When the movable clamp 8 drives the flexible circuit board to move to the right, it can remain stationary with the belt conveyor device 32, which can avoid wear of the flexible circuit board due to friction.

[0040] Specifically, Figure 1 As shown, the detection mechanism 2 includes two cameras installed on the support frame 1. The two cameras are respectively located on the upper and lower sides of the fixed clamp 3 and the movable clamp 8, and are arranged symmetrically with respect to the fixed clamp 3 and the movable clamp 8.

[0041] During operation, after the movable clamp 8 moves to the farthest position to the right, the flexible circuit board is laid flat in the middle of the two cameras, and the cameras can collect images of the front and back sides of the flexible circuit board.

Claims

1. An intelligent control lighting circuit board detection fixture, comprising a support frame (1), and a detection mechanism (2) arranged on the support frame (1); characterized in that: Also includes A fixed clamp (3) is fixedly mounted on the support frame (1) and is capable of self-drivingly clamping one end of the circuit board; the fixed clamp (3) comprises a first base (4) fixedly connected to the support frame (1), and a first cylinder (5) distributed on the top of the first base (4); a mounting plate (6) is fixedly connected to the free end of the first cylinder (5), and a pressure roller (7) is rotatably arranged on the mounting plate (6); when the first cylinder (5) contracts, the pressure roller (7) can be driven to move downward through the mounting plate (6) to clamp one end of the circuit board; A movable clamp (8) is slidably mounted on the support frame (1) and is capable of automatically clamping the other end of the circuit board; the movable clamp (8) comprises a second base (9) slidably mounted on the support frame (1), and a second cylinder (10) distributed on the top of the second base (9); a pressing plate (11) is fixedly connected to the free end of the second cylinder (10), and the bottom surface of the pressing plate (11) is tangent to the bottom end of the pressing roller (7); when the second cylinder (10) contracts, it can drive the pressing plate (11) to move downward to clamp the other end of the circuit board; The driving mechanism is arranged on the front side of the support frame (1); after the movable clamp (8) and the fixed clamp (3) clamp the circuit board, the driving mechanism drives the movable clamp (8) to move relative to the fixed clamp (3); A controller (12) is arranged inside the fixed clamp (3) and the movable clamp (8), and can control the moving distance of the movable clamp (8) relative to the fixed clamp (3), so that the circuit board can remain flat when it moves to the detection station; the controller (12) includes a shell (13) fixedly installed in the first base (4), and a roller (14) rotatably installed in the shell (13), a steel ruler (15) is wound on the roller (14), and a ruler spring (16) is also arranged in the roller (14), the outer end of the ruler spring (16) is fixedly connected to the inner end of the steel ruler (15), the outer end of the steel ruler (15) passes through the shell (13) and the first base (4) and is fixedly connected to the second base (9); when the second base (9) moves, it can drive one end of the steel ruler (15) to move, and the maximum length that the steel ruler (15) can extend is equal to the distance that the movable clamp (8) can move.

2. The intelligent control lighting circuit board detection fixture according to claim 1 is characterized by: The controller (12) further comprises a winding roller (17) rotatably mounted in the second base (9), and a worm wheel (18) and a worm screw (19) for controlling the rotation of the winding roller (17); one end of the steel ruler (15) away from the drum (14) is fixed on the winding roller (17), the worm wheel (18) is fixedly mounted on the rotating shaft of the winding roller (17), and the worm screw (19) is rotatably mounted in the second base (9) and one end of the worm screw (19) extends outside the second base (9).

3. The intelligent control lighting circuit board detection fixture according to claim 1 is characterized by: A roller (20) is fixedly connected to the rotating shaft of the drum (14), and the roller (20) is sleeved with a first gear (21); the first gear (21) is connected to the roller (20) via a pressure spring (22); the first gear (21) is meshed with a first rack rod (23), and the first rack rod (23) is slidably connected to the first base (4) in the vertical direction; when the drum (14) rotates, the roller (20) can drive the first gear (21) to rotate through the pressure spring (22); when the drum (14) and the roller (20) stop rotating, the first gear (21) can reverse relative to the roller (20) under the compression of the pressure spring (22); The mounting plate (6) is provided with an oblique sliding groove (24), and the pressing roller (7) is rotatably connected to a slide plate (25) via a bearing; the slide plate (25) is fixedly connected to the first rack rod (23) via a first traction rope (26); when the movable clamp (8) drives one end of the circuit board to move, the slide plate (25) can drive the pressing roller (7) to move obliquely upward toward the side close to the movable clamp (8), thereby reducing the clamping force of the pressing roller (7) on the circuit board; when the movable clamp (8) stops moving, the slide plate (25) can drive the pressing roller (7) to move obliquely downward toward the side away from the movable clamp (8), thereby causing the pressing roller (7) to pull one end of the circuit board to move toward the end away from the movable clamp (8) and press the circuit board.

4. The intelligent control lighting circuit board detection fixture according to claim 3 is characterized by: A second gear (27) is fixedly connected to the rotating shaft of the pressure roller (7), the second gear (27) is meshed with a second rack rod (28), and the second rack rod (28) is fixedly connected to the mounting plate (6) and arranged parallel to the oblique slide groove (24).

5. The intelligent control lighting circuit board detection fixture according to claim 1 is characterized by: The second base (9) is slidably connected to a baffle (29) in the vertical direction, and the baffle (29) is located on the side of the pressure plate (11) away from the pressure roller (7); the baffle (29) is hinged with a connecting rod (30), and the connecting rod (30) is hinged with a sliding rod (31), and the sliding rod (31) is slidably connected to the second base (9) in the horizontal direction, and the sliding rod (31) extends to the outside of the second base (9) at one end close to the first base (4).

6. The intelligent control lighting circuit board detection fixture according to claim 1, characterized in that: Pads made of soft material are installed on the outside of the pressing roller (7) and the bottom of the pressing plate (11).

7. The intelligent control lighting circuit board detection fixture according to claim 1 is characterized by: Belt conveying devices (32) are provided on both the left and right sides of the support frame (1); the belt conveying device (32) on the left side is used to convey the circuit board to the fixed clamp (3) and the movable clamp (8); and the belt conveying device (32) on the right side is used to output the circuit board after inspection.

8. The intelligent control lighting circuit board detection fixture according to claim 7 is characterized by: The driving mechanism comprises a first sprocket (33) which is transmission-connected to the left belt conveyor (32); the first sprocket (33) is transmission-connected to a second sprocket (35) and a tensioning wheel (36) through a chain (34); a slider (37) is mounted on the rotating shaft of the second sprocket (35); the slider (37) is slidably connected to the second base (9) in the vertical direction; the slider (37) is fixedly connected to the pressing plate (11) through a connecting frame (38); a third gear (39) is fixedly connected to the rotating shaft of the second sprocket (35); a third rack rod (40) which can mesh with the third gear (39) is arranged below the third gear (39); the third rack rod (40) is fixedly mounted on the side wall of the support frame (1); when the pressing plate (11) moves downward to press the circuit board, the pressing plate (11) can drive the third gear (39) to move downward and mesh with the third rack rod (40) through the connecting frame (38) and the slider (37).

9. The intelligent control lighting circuit board detection fixture according to claim 1, characterized in that: The detection mechanism (2) comprises two cameras mounted on a support frame (1), the two cameras being located respectively on the upper and lower sides of the fixed clamp (3) and the movable clamp (8), and being arranged symmetrically with respect to the fixed clamp (3) and the movable clamp (8).

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