A circuit board turnover device

Abstract

The present application relates to the technical field of circuit board production, and particularly relates to a circuit board turnover device, which comprises a rack, two conveying shafts symmetrically arranged on the two sides of the rack, one end of one of the conveying shafts being fixed with an output end of a conveying motor, conveying wheels being fixed on the two sides of the two conveying shafts, the conveying wheels at corresponding positions on the two conveying shafts being connected through conveying ropes, a jacking cylinder being further fixed on the rack, a support plate being fixed at the end of a piston rod of the jacking cylinder, a screw rod and a slide rod being further arranged on the rack, the screw rod being driven to rotate by a positioning motor, a threaded tube being arranged on the screw rod and being threadedly connected with the screw rod, a slide tube being arranged on the slide rod and being slidingly connected with the slide rod, a slide plate being fixed between the slide rod and the threaded tube, a lead screw and a slide rail being arranged on the slide plate, the lead screw being driven to rotate by a grabbing motor, and mounting plates being symmetrically arranged on the two sides of the screw rod. The device can realize turnover of the circuit board and facilitate detection requirements of double-sided circuit boards.

Description

Technical Field

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

[0002] Circuit boards, or printed circuit boards, make circuits miniaturized and more intuitive, playing an important role in the mass production of fixed circuits and the optimization of electrical appliance layout.

[0003] When processing circuit boards on both sides, one side is usually processed first. Then, the circuit board is flipped over and transferred to the next process for processing on the other side. After processing, the circuit board needs to be visually inspected to confirm whether there are any appearance defects.

[0004] Patent application CN202222481145.0 discloses an intelligent visual inspection device for circuit boards, including a worktable. A rotating column is installed at the center of the upper surface of the worktable, and a cylinder is connected to the other end of the rotating column. A moving plate is fixedly installed at the bottom of the cylinder, and a clamping mechanism is provided inside the moving plate. A controller is installed inside the worktable. The moving plate has two motor slots and multiple telescopic slots inside, and an infrared rangefinder and a camera are installed on the lower surface of the moving plate. The controller is electrically connected to a first motor, a cylinder, an infrared rangefinder, a camera, a second motor, and a pressure sensor. A tray holds the circuit board to be inspected, and visual inspection is performed through the camera. However, this type of device cannot flip the circuit board, requiring manual rotation, which greatly reduces the production efficiency of circuit boards.

[0005] This invention was proposed in response to the shortcomings of existing technologies. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a circuit board flipping device.

[0007] This invention can be achieved through the following technical solutions:

[0008] This invention discloses a circuit board flipping device, comprising a frame with conveyor shafts symmetrically arranged on both sides of the frame. One end of one conveyor shaft is fixed to the output end of a conveyor motor, and conveyor wheels are fixed on both sides of the two conveyor shafts. The conveyor wheels at corresponding positions on the two conveyor shafts are connected by conveyor ropes. A lifting cylinder is also fixed on the frame, and a support plate is fixed to the end of the piston rod of the lifting cylinder. A screw and a slide rod are also provided on the frame. The screw is driven to rotate by a positioning motor and has a threaded tube threadedly connected to it. A slide tube is slidably connected to the slide rod. A sliding plate is fixed between the slide rod and the threaded tube. A lead screw and a slide rail are provided on the sliding plate. The lead screw is driven to rotate by a gripping motor. Mounting plates are symmetrically arranged on both sides of the screw, and threaded blocks are fixed on each mounting plate. The lead screw passes through the threaded blocks and is threadedly connected to them. Slider blocks are fixed on each mounting plate at positions corresponding to the slide rails, and the slide rails are slidably connected to the sliders. A flipping motor is fixed on each mounting plate, and a fixing plate is fixed to the output end of each flipping motor.

[0009] Preferably, a limit cylinder is also fixed on the frame on one side of the support plate, and a limit block is fixed to the end of the piston rod of the limit cylinder. When the circuit board moves with the conveyor rope, the solenoid valve connected to the limit cylinder is energized to open the air passage. After compressed air enters the limit cylinder, the piston rod on the limit cylinder moves, the limit block moves, and after the limit block moves above the conveyor rope, it blocks the movement of the circuit board, thereby blocking the circuit board above the support plate.

[0010] Preferably, the external threads on both sides of the lead screw have opposite thread directions.

[0011] Preferably, each of the fixing plates is provided with a V-shaped fixing groove.

[0012] Compared with existing technologies, the present invention has the following advantages:

[0013] This device can flip the circuit board, which is convenient for testing double-sided circuit boards. Attached Figure Description

[0014] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0015] Figure 1 This is a schematic diagram of the structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the structure of the present invention from another angle;

[0017] In the diagram: 1. Frame; 2. Conveyor shaft; 3. Conveyor wheel; 4. Conveyor motor; 5. Conveyor rope; 6. Lifting cylinder; 7. Support plate; 8. Limit cylinder; 9. Limit block; 10. Screw; 11. Positioning motor; 12. Threaded tube; 13. Slide rod; 14. Fixing plate; 15. Slide tube; 16. Slide plate; 17. Slide rail; 18. Mounting plate; 19. Threaded block; 20. Slider; 21. Lead screw; 22. External thread; 23. Gripping motor; 24. Tilting motor; 25. Circuit board; Detailed Implementation

[0018] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings:

[0019] Example 1:

[0020] like Figures 1 to 2As shown, this embodiment discloses a circuit board flipping device, including a frame 1. Conveyor shafts 2 are symmetrically arranged on both sides of the frame 1. One end of one conveyor shaft 2 is fixed to the output end of a conveyor motor 4. Conveyor wheels 3 are fixed to both sides of the two conveyor shafts 2. The conveyor wheels 3 at corresponding positions on the two conveyor shafts 2 are connected by conveyor ropes 5. A lifting cylinder 6 is also fixed on the frame 1. A support plate 7 is fixed to the end of the piston rod of the lifting cylinder 6. A screw 10 and a slide rod 13 are also provided on the frame 1. The screw 10 is driven to rotate by a positioning motor 11. A threaded tube 12 is provided on the screw 10 and threadedly connected to it. The slide rod 13... A slide tube 15 is provided that is slidably connected to the slide rod 13. A slide plate 16 is fixed between the slide rod 13 and the threaded tube 12. A lead screw 21 and a slide rail 17 are provided on the slide plate 16. The lead screw 21 is driven to rotate by the material gripping motor 23. Mounting plates 18 are symmetrically arranged on both sides of the lead screw 10. Threaded blocks 19 are fixed on each mounting plate 18. The lead screw 21 passes through the threaded blocks 19 and is threadedly connected to the threaded blocks 19. Slider blocks 20 are fixed on each mounting plate 18 at positions corresponding to the slide rail 17. The slide rail 17 and the slider blocks 20 are slidably connected. A flipping motor 24 is fixed on each mounting plate 18. A fixing plate 14 is fixed at the output end of each flipping motor 24.The circuit boards 25 to be tested are placed sequentially on the conveyor ropes 5. The two conveyor ropes 5 support the lower ends of the circuit boards 25. The conveyor motor 4 drives the conveyor wheel 3 to rotate, and the conveyor ropes 5 rotate with the conveyor wheel 3. The circuit boards 25 move forward with the rotation of the conveyor ropes 5. After the circuit boards 25 move to the designated position, the conveyor motor 4 stops, and the solenoid valve connected to the lifting cylinder 6 is activated. After the solenoid valve is energized, the corresponding air circuit is opened, and compressed gas enters into the lifting cylinder 6. The piston rod of the lifting cylinder 6 moves, and the support plate 7 rises. After the support plate 7 contacts the corresponding circuit board 25, it lifts the circuit board 25 upwards. Once the circuit board 25 reaches the designated position, it is photographed by a camera for visual inspection. After one side of the circuit board 25 is inspected, the positioning motor 11 is energized to drive the screw 10 to rotate. When the screw 10 rotates, the threaded tube 12 moves in the direction of the screw 10, the slide plate 16 moves with the threaded tube 12, and the two fixing plates 14 move with the slide plate 16. After the two fixing plates 14 move to both sides of the circuit board 25, the positioning motor 11 stops. The gripping motor 23 drives the lead screw 21 to rotate. When the lead screw 21 rotates, the two mounting plates 18 move closer to each other. After the two fixing plates 14 contact the two ends of the circuit board 25, the circuit board 25 is fixed between the two fixing plates 14. Then, the gripping motor 23 stops, and the positioning motor 11 drives the screw 10 to rotate in the opposite direction. The circuit board 25 moves with the slide plate 16. After the circuit board 25 separates from the support plate 7, the positioning motor 11 stops. The flipping motor 24 is powered on and starts. The flipping motor 24 drives the fixing plate 14 to rotate 180 degrees, and the circuit board 25... The circuit board 25 is flipped by rotating 180 degrees with the fixed plate 14. After the circuit board 25 is flipped, the positioning motor 11 drives the screw 10 to rotate again. After the circuit board 25 moves above the support plate 7, the gripping motor 23 drives the lead screw 21 to rotate. The two fixed plates 14 move away from each other, and the circuit board 25 is separated from the fixed plate 14. The circuit board 25 is placed on the support plate 7. The circuit board 25 is visually inspected again by the camera. This device can realize the flipping of the circuit board 25, which is convenient for the inspection needs of double-sided circuit boards 25.

[0021] Among them, the external threads 22 on both sides of the lead screw 21 have opposite thread directions.

[0022] Each of the fixing plates 14 is provided with a V-shaped fixing groove.

[0023] Example 2:

[0024] This embodiment discloses a circuit board flipping device. Based on the structure and principle of Embodiment 1, this embodiment also fixes a limiting cylinder 8 on the frame 1 on one side of the support plate 7, and a limiting block 9 is fixed to the end of the piston rod of the limiting cylinder 8. When the circuit board 25 moves with the conveying rope 5, the solenoid valve connected to the limiting cylinder 8 is energized and opens the air passage. After compressed air enters the limiting cylinder 8, the piston rod on the limiting cylinder 8 moves, and the limiting block 9 moves. After the limiting block 9 moves above the conveying rope 5, it blocks the movement of the circuit board 25, thereby blocking the circuit board 25 above the support plate 7.

[0025] The above are merely preferred embodiments of the present invention. It should be noted that, for those skilled in the art, various changes, modifications, substitutions and variations can be made to these embodiments without departing from the technical principles of the present invention. These changes, modifications, substitutions and variations should also be considered within the scope of protection of the present invention.

Claims

1. A circuit board flipping device, characterized in that, The device includes a frame with symmetrically arranged conveyor shafts on both sides. One end of one conveyor shaft is fixed to the output end of a conveyor motor, and conveyor wheels are fixed to both sides of the two conveyor shafts. The conveyor wheels at corresponding positions on the two conveyor shafts are connected by conveyor ropes. A lifting cylinder is also fixed to the frame, and a support plate is fixed to the end of the piston rod of the lifting cylinder. A screw and a slide rod are also provided on the frame. The screw is driven to rotate by a positioning motor and has a threaded tube threadedly connected to it. A slide tube is slidably connected to the slide rod. A sliding plate is fixed between the slide rod and the threaded tube. A lead screw and a slide rail are provided on the sliding plate. The lead screw is driven to rotate by a gripping motor. Mounting plates are symmetrically arranged on both sides of the screw, and threaded blocks are fixed on each mounting plate. The lead screw passes through the threaded blocks and is threadedly connected to them. Slider blocks are fixed on each mounting plate at positions corresponding to the slide rails, and the slide rails are slidably connected to the sliders. A tilting motor is fixed on each mounting plate, and a fixing plate is fixed to the output end of each tilting motor.

2. The circuit board flipping device according to claim 1, characterized in that: A limit cylinder is also fixed on the frame on one side of the support plate, and a limit block is fixed to the end of the piston rod of the limit cylinder.

3. The circuit board flipping device according to claim 1, characterized in that: The external threads on both sides of the lead screw have opposite thread directions.

4. The circuit board flipping device according to claim 1, characterized in that: Each of the fixing plates is provided with a V-shaped fixing groove.

Images