Printed circuit board conveying structure

Abstract

The utility model discloses a printed circuit board conveying structure and belongs to the technical field of circuit board conveying, the printed circuit board conveying structure comprises a conveying table and clamping plates, a lead screw is rotatably connected to the middle position in the conveying table, the two ends of the lead screw are provided with symmetrical threads and extend to the middle position, and the clamping plates are symmetrically arranged at the two ends of the lead screw; the clamping plates are slidably connected into the conveying table, the clamping plates are in threaded connection with the lead screws between the clamping plates, the inner sides of the clamping plates are rotationally connected with rotating discs, the outer sides of the rotating discs are in transmission connection with transmission belts, the inner sides of the transmission belts are fixedly connected with connecting rods, and the outer sides of the connecting rods are rotationally connected with bearing rotating shafts. When the circuit board encounters resistance such as bending, deformation, contact with other objects or clamping at a certain position, due to the friction force between the bearing rotating shaft and the circuit board and the rolling characteristic of the bearing rotating shaft, the circuit board can be kept in a relatively static state, the conveying belt can continue to rotate and operate, and direct impact on the circuit board is avoided.

Description

Technical Field

[0001] This application relates to the field of circuit board transport technology, and more particularly to a printed circuit board transport structure. Background Technology

[0002] Circuit board transport refers to the process of moving finished circuit boards from the production line or processing point to the next process, testing point, packaging point, or customer during the electronic product manufacturing process. This process includes multiple steps such as packaging, loading, transportation, and unloading of circuit boards to ensure that the circuit boards are not damaged during transport and maintain their original functions and performance.

[0003] In automated production lines for circuit boards, the conveying process is a crucial link. However, when circuit boards encounter obstacles during conveying, traditional transmission systems often fail to stop them immediately, which can lead to severe damage to the circuit boards, such as compression, breakage, or backplane friction damage. Therefore, this patent requires an upgrade and modification based on existing technologies. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides a printed circuit board (PCB) conveying structure that overcomes these deficiencies and aims to solve the problem that the conveying process is a critical link in automated PCB production lines. However, when PCBs encounter obstacles during conveying, traditional transmission systems often fail to stop immediately, which can lead to severe damage to the PCBs, such as compression, breakage, or backplane friction damage.

[0005] To achieve the above objectives, this application provides the following technical solution: a printed circuit board conveying structure, including a conveyor table and a clamping plate. A lead screw is rotatably connected to the middle position inside the conveyor table. The lead screw has symmetrical threads at both ends and extends to the middle position. The clamping plate is symmetrically arranged at both ends of the lead screw and is slidably connected inside the conveyor table. The clamping plate and the lead screw are threadedly connected. A rotating disk is rotatably connected to the inner side of the clamping plate. A transmission belt is drively connected to the outer side of the rotating disk. A connecting rod is fixedly connected to the inner side of the transmission belt. A bearing shaft is rotatably connected to the outer side of the connecting rod.

[0006] By adopting the above technical solution, the rotation of the lead screw can drive the clamping plate to move inside the conveyor table. According to the direction of the lead screw rotation, the clamping plate can be controlled to move towards the center position of the conveyor table or towards the original center position, thereby adjusting the appropriate spacing of the circuit board width so that the circuit board is attached to the outside of the bearing shaft. By rotating the rotating disk, the outer transmission belt can be driven to move along the rotation direction of the rotating disk, thereby driving the movement of the connecting rod. Since the circuit board is attached to the outside of the bearing shaft, there is a certain static friction between the bearing shaft and the connecting rod behind the bearing circuit board, which can drive the circuit board to move. When the circuit board encounters resistance during the movement and conveying, when the resistance is greater than the static friction between the bearing shaft and the connecting rod behind the bearing circuit board, the circuit board will remain stationary due to the resistance, and the bearing shaft will roll along the bottom of the circuit board to prevent damage to the circuit board.

[0007] As a preferred technical solution of this application, a first motor is fixedly connected to the outer side of the conveyor platform, and the drive end of the first motor passes through the side of the conveyor platform and is fixedly connected inside the lead screw.

[0008] By adopting the above technical solution, the first motor controls the rotation of the lead screw, thereby controlling the movement of the clamping plate, thus achieving the clamping and fixing of circuit boards of different sizes.

[0009] As a preferred technical solution of this application, a second motor is fixedly connected to the outer side of the clamping plate, and the second motor passes through the clamping plate and is fixedly connected inside one of the rotating disks.

[0010] By adopting the above technical solution, the rotation of the turntable can be controlled by the second motor, and the rotation of the turntable can drive the outer transmission belt to move along the rotation direction, thereby realizing the transportation of the circuit board.

[0011] As a preferred technical solution of this application, a slide rod is fixedly connected inside the conveyor table, and the slide connection is inside the clamping plate.

[0012] By adopting the above technical solution, four slide bars are symmetrically arranged on both sides of the clamping plate to ensure the stability of the clamping plate moving inside the conveyor.

[0013] As a preferred technical solution of this application, an extension plate is fixedly connected to the top side of the conveyor, a cooling layer is fixedly connected to the top of the extension plate, and a fan is provided inside the cooling layer.

[0014] By adopting the above technical solution, multiple sets of fans are equidistantly arranged on the top of the cooling layer, and the circuit board can be cooled by the fan arrangement.

[0015] As a preferred technical solution of this application, a protective net is fixedly connected to the outside of the fan, and fan blades are fixedly connected to the inside of the fan.

[0016] By adopting the above technical solution, the protective net can prevent debris from falling into the fan, and the rotation of the fan blades can drive the air to flow quickly, thereby removing the heat from the surface of the circuit board.

[0017] As a preferred technical solution of this application, a limiting block is fixedly connected to the outside of the connecting rod, and the diameter of the limiting block is larger than the inner diameter of the bearing shaft.

[0018] By adopting the above technical solution, it is possible to prevent the load-bearing shaft from detaching from the connecting rod during the rotation process.

[0019] As a preferred technical solution of this application, a contraction spring is provided on the outer side of the connecting rod, and the contraction spring is slidably connected to the transmission belt and the side of the bearing shaft.

[0020] By adopting the above technical solution, when the clamping plate adjusts the clamping distance of the circuit board, if the clamping is too tight, the circuit board will drive the bearing shaft to push the contraction spring to contract, thereby preventing damage to the circuit board during the adjustment of the clamping distance.

[0021] The beneficial effects of this application are:

[0022] 1. In this utility model, when the circuit board encounters resistance such as bending, deformation, contact with other objects, or getting stuck in a certain position, this resistance will act on the bearing shaft. At this time, due to the friction between the bearing shaft and the circuit board and the rolling characteristics of the bearing shaft, the circuit board will remain relatively stationary, while the conveyor belt will continue to rotate. In this case, the bearing shaft will roll along the bottom of the circuit board. This rolling action helps to disperse the resistance and reduce the direct impact on the circuit board.

[0023] 2. In this utility model, a retraction spring is slidably connected to the side of the transmission belt and the bearing shaft to ensure that when the clamping plate adjusts the clamping distance of the circuit board, if the clamping is too tight, the circuit board will drive the bearing shaft to push the retraction spring to retract, thereby preventing damage to the circuit board. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the top view structure of this application;

[0025] Figure 2 This is a schematic diagram of the bottom view structure of this application;

[0026] Figure 3 This is a side sectional view of the screw position in this application;

[0027] Figure 4 This is a schematic diagram of the top cross-section structure of this application;

[0028] Figure 5 This is a schematic diagram of the front section structure of this application;

[0029] Figure 6 for Figure 3 Enlarged schematic diagram of the structure at point A;

[0030] Figure 7 This is a schematic diagram of the internal structure of the fan in this application.

[0031] In the diagram: 1. Conveyor table; 2. Clamping plate; 201. Rotary disk; 202. Transmission belt; 203. Second motor; 204. Connecting rod; 205. Bearing shaft; 206. Limiting block; 207. Retraction spring; 3. Extension plate; 4. Cooling layer; 5. Slide rod; 6. Fan; 601. Protective net; 602. Fan blade; 7. Lead screw; 8. First motor. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] Reference Figure 1-7A printed circuit board conveying structure includes a conveyor table 1 and a clamping plate 2. A lead screw 7 is rotatably connected to the center of the conveyor table 1. The lead screw 7 has symmetrical threads at both ends extending to the center. A stop block is fixedly connected to the center of the lead screw 7. The clamping plate 2 is symmetrically arranged at both ends of the lead screw 7 and is slidably connected inside the conveyor table 1. The clamping plate 2 and the lead screw 7 are threadedly connected. A rotating disk 201 is rotatably connected to the inner side of the clamping plate 2. Five rotating disks 201 are arranged equidistantly and rotatably connected to the inner side of the clamping plate 2. A transmission belt 202 is driven to the outer side of the rotating disks 201. Connecting rods 204 are fixedly connected to the inner side of the transmission belt 202. Multiple connecting rods 204 are arranged equidistantly along the side of the transmission belt 202. A bearing shaft 205 is rotatably connected to the outer side of the connecting rods 204. The rotation of the lead screw 7 can drive the clamping plate. 2. Moving inside the conveyor 1, the clamping plate 2 can be controlled to move towards the center of the conveyor 1 or towards the original center position according to the rotation direction of the lead screw 7, thereby adjusting the spacing of the appropriate circuit board width so that the circuit board is attached to the outside of the bearing shaft 205. By rotating the rotating disk 201, the outer transmission belt 202 can be driven to move along the rotation direction of the rotating disk 201, thereby driving the movement of the connecting rod 204. Since the circuit board is attached to the outside of the bearing shaft 205, there is a certain static friction between the bearing shaft 205 and the connecting rod 204 after the bearing circuit board is supported, which can drive the circuit board to move. When the circuit board encounters resistance during the movement and conveying, when the resistance is greater than the static friction between the bearing shaft 205 and the connecting rod 204 after the bearing circuit board is supported, the circuit board will remain stationary due to the resistance, and the bearing shaft 205 will roll along the bottom of the circuit board to prevent the circuit board from being damaged.

[0034] In this embodiment, as Figure 1 - Figure 7 A first motor 8 is fixedly connected to the outer side of the conveyor 1 shown. The drive end of the first motor 8 passes through the side of the conveyor 1 and is fixedly connected inside the lead screw 7. The first motor 8 controls the rotation of the lead screw 7, thereby controlling the movement of the clamping plate 2, thus realizing the clamping and fixing of circuit boards of different sizes.

[0035] In this embodiment, as Figure 1 - Figure 7 A second motor 203 is fixedly connected to the outer side of the clamping plate 2 shown. The second motor 203 passes through the clamping plate 2 and is fixedly connected inside one of the rotating disks 201. Thus, the second motor 203 can control the rotation of the rotating disk 201, and the rotation of the rotating disk 201 drives the outer transmission belt 202 to move along the rotation direction, thereby realizing the transportation of the circuit board.

[0036] In this embodiment, as Figure 1 - Figure 7The conveyor 1 shown has a slide rod 5 fixedly connected inside and slidably connected inside the clamping plate 2. There are four slide rods 5 symmetrically arranged on both sides of the clamping plate 2 to ensure the stability of the clamping plate 2 when moving inside the conveyor 1.

[0037] In this embodiment, as Figure 1 - Figure 7 An extension plate 3 is fixedly connected to the top side of the conveyor 1 shown. A cooling layer 4 is fixedly connected to the top of the extension plate 3. A fan 6 is installed inside the cooling layer 4. Multiple sets of fans 6 are equidistantly arranged on the top of the cooling layer 4. The fans 6 can be used to cool the circuit board.

[0038] In this embodiment, as Figure 1 - Figure 7 A protective net 601 is fixedly connected to the outside of the fan 6 shown, and a fan blade 602 is fixedly connected inside the fan 6. The protective net 601 can prevent debris from falling into the fan 6. The rotation of the fan blade 602 can drive the air to flow quickly, thereby removing the heat from the surface of the circuit board.

[0039] In this embodiment, as Figure 1 - Figure 7 A limiting block 206 is fixedly connected to the outside of the connecting rod 204. The diameter of the limiting block 206 is larger than the inner diameter of the bearing shaft 205, so as to prevent the bearing shaft 205 from coming off the connecting rod 204 during rotation.

[0040] In this embodiment, as Figure 1 - Figure 7 A retraction spring 207 is provided on the outside of the connecting rod 204 shown. The retraction spring 207 is slidably connected to the side of the transmission belt 202 and the bearing shaft 205. When the clamping plate 2 adjusts the clamping distance of the circuit board, if the clamping is too tight, the circuit board will drive the bearing shaft 205 to push the retraction spring 207 to retract, thereby preventing damage to the circuit board during the adjustment of the clamping distance.

[0041] Working principle: The first motor 8 is started, driving the lead screw 7 to rotate, thereby moving the two clamping plates 2 towards the center or outwards to adjust the clamping distance of the circuit board according to its width. When the clamping plates 2 move to the appropriate position, the circuit board is placed outside the supporting shaft 205, ensuring good contact between them. The second motor 203 is started, driving the rotating disk 201 to rotate, thereby moving the transmission belt 202 along the rotation direction. The movement of the transmission belt 202 causes the connecting rod 204 and the supporting shaft 205 to move, thus conveying the circuit board. During the conveying process, the fan 6 can be started to blow air to remove heat from the surface of the circuit board, thereby reducing heat loss. When the circuit board is clamped on the bearing shaft 205 and moves with the conveyor belt 202, if the circuit board encounters resistance such as bending, deformation, contact with other objects, or getting stuck in a certain position, this resistance will act on the bearing shaft. At this time, due to the friction between the bearing shaft and the circuit board and the rolling characteristics of the bearing shaft, the circuit board will remain relatively stationary, while the conveyor belt will continue to rotate. In this case, the bearing shaft 205 will roll along the bottom of the circuit board. This rolling action helps to disperse resistance and reduce direct impact on the circuit board. By specially treating the surface of the bearing shaft to make it have sufficient friction and wear resistance, even if rolling occurs, it will not cause obvious scratches or damage to the circuit board.

[0042] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A printed circuit board transport structure comprising a conveyor table (1) and a clamping plate (2), characterized in that, The rotating connection is arranged in the middle position inside the conveying table (1), the screw rod (7) is provided with symmetrical threads at both ends and extends to the middle position, the clamping plate (2) is symmetrically arranged at both ends of the screw rod (7), the clamping plate (2) is slidingly connected inside the conveying table (1), the clamping plate (2) is threadedly connected with the screw rod (7), the rotating disc (201) is rotatably connected to the inner side of the clamping plate (2), the transmission belt (202) is drivingly connected to the outer side of the rotating disc (201), the connecting rod (204) is fixedly connected to the inner side of the transmission belt (202), and the bearing shaft (205) is rotatably connected to the outer side of the connecting rod (204).

2. A printed circuit board transport structure according to claim 1, wherein, The first motor (8) is fixedly connected to the outer side of the conveying table (1), and the driving end of the first motor (8) penetrates through the side of the conveying table (1) and is fixedly connected inside the screw rod (7).

3. The printed circuit board transport structure of claim 1, wherein, The second motor (203) is fixedly connected to the outer side of the clamping plate (2), and the second motor (203) penetrates through the clamping plate (2) and is fixedly connected inside one of the rotating discs (201).

4. The printed circuit board transport structure of claim 1, wherein, The sliding rod (5) is fixedly connected inside the conveying table (1), and the sliding rod (5) is slidingly connected inside the clamping plate (2).

5. The printed circuit board transport structure of claim 1, wherein, The extension plate (3) is fixedly connected to the top of the side of the conveying table (1), the cooling layer (4) is fixedly connected to the top of the extension plate (3), and the fan (6) is arranged inside the cooling layer (4).

6. A printed circuit board transport structure according to claim 5, wherein, The protective net (601) is fixedly connected to the outer side of the fan (6), and the fan blade (602) is fixedly connected inside the fan (6).

7. A printed circuit board transport structure according to claim 1, wherein, The limiting block (206) is fixedly connected to the outer side of the connecting rod (204), and the diameter of the limiting block (206) is greater than the inner diameter of the bearing shaft (205).

8. A printed circuit board transport structure according to claim 1, wherein, The contraction spring (207) is arranged at the outer side of the connecting rod (204), and the contraction spring (207) is slidingly connected to the side of the transmission belt (202) and the bearing shaft (205).

Images