Printed wiring board conveying device

Abstract

This utility model discloses a printed circuit board (PCB) conveying device, including a mounting frame, a sprocket mounted on the mounting frame and driven by a power device, multiple rows of chains meshing with the sprocket, multiple chain plates connected to the chains and used to carry PCBs, multiple clamping devices on the chain plates for clamping the edges of the PCBs, sensors at both ends of the mounting frame for detecting whether the PCBs are in position, and a control device. The sensors are electrically connected to the control device, and the control device is electrically connected to the clamping devices. When the sensor at the infeed end of the mounting frame detects a PCB, the control device controls the corresponding clamping device to clamp the edges of the PCB. When the sensor at the discharge end of the mounting frame detects a PCB, the control device controls the corresponding clamping device to release the PCB, and the PCB is discharged to proceed to the next process. The PCB conveying device provided by this utility model uses multiple rows of chains for conveying, increasing the load-bearing capacity of the conveying device. During the conveying process, the PCBs are clamped to ensure their stability and surface quality.

Description

Technical Field

[0001] This utility model relates to the technical field of printed circuit board processing equipment, specifically to a printed circuit board conveying device. Background Technology

[0002] Solder resist ink for printed circuit boards (PCBs) is typically cured using a high-temperature baking method. During this process, the PCBs are conveyed from one end of the curing chamber to the other via a conveyor system. In existing technologies, PCB baking primarily utilizes a mesh belt conveyor, which carries the PCBs. However, mesh belts are prone to deformation and are unsuitable for processing large PCBs. Furthermore, the PCBs are susceptible to slippage during transport, and their surfaces can easily rub against the conveyor belt, causing surface damage and affecting product quality.

[0003] Therefore, the purpose of this utility model is to provide a new conveying structure to solve the above-mentioned technical problems. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a printed circuit board conveying device, which adopts multi-row chain conveying to increase the load-bearing capacity of the conveying device, and ensures the stability of the circuit board by clamping it during the conveying process, thereby ensuring the surface quality of the circuit board.

[0005] The technical solution of this utility model is as follows:

[0006] A printed circuit board conveying device includes a mounting frame, a sprocket mounted on the mounting frame and driven by a power device, multiple rows of chains that mesh with the sprocket, multiple chain plates connected to the chains and used to carry the circuit board, multiple clamping devices on the chain plates for clamping the edges of the circuit board, sensors at both ends of the mounting frame for detecting whether the circuit board is in position, and a control device, wherein the sensors are electrically connected to the control device, and the control device is electrically connected to the clamping devices;

[0007] When the sensor at the feeding end of the mounting bracket detects the circuit board, the control device controls the corresponding clamping device to clamp the edge of the circuit board.

[0008] When the sensor at the discharge end of the mounting bracket detects the circuit board, the control device controls the corresponding clamping device to release the circuit board, and the circuit board is discharged to enter the next process.

[0009] Furthermore, the chain consists of 4-5 rows.

[0010] Furthermore, the chain pitch is 19.05 mm.

[0011] Furthermore, the surface of the chain plate has a Teflon coating.

[0012] Furthermore, the sensor is a photoelectric sensor or a fiber optic sensor.

[0013] Furthermore, the clamping device is a cam clamping mechanism or a motor-driven clamping device.

[0014] Furthermore, the clamping device is a cam clamping mechanism, which includes a push rod, an eccentric wheel connected to the push rod, a pressure rod disposed on one side of the eccentric wheel, and a drive device for driving the push rod to move. The eccentric wheel is connected to the chain plate through a rotating shaft. The rotation of the eccentric wheel drives the pressure rod to rotate, and the pressure rod presses the circuit board or releases the circuit board.

[0015] Furthermore, the clamping device is a motor-driven clamping device, which includes a motor, a turntable connected to the output shaft of the motor, and a pressure rod disposed on one side of the turntable. The turntable is connected to the chain plate through a rotating shaft. The motor drives the turntable to rotate, and the turntable drives the pressure rod to rotate. The pressure rod presses against the circuit board or releases the circuit board.

[0016] Compared with the prior art, the printed circuit board conveying device provided by this utility model has the following advantages:

[0017] I. The printed circuit board conveying device provided by this utility model includes a clamping device on the chain plate for holding the edge of the circuit board. When the sensor at the infeed end detects the circuit board, it controls the corresponding clamping device to clamp the circuit board. When the sensor at the discharge end detects the circuit board, it controls the corresponding clamping device to release the circuit board, allowing the circuit board to exit and proceed to the next process. During the conveying process, the clamping device limits the circuit board to prevent it from sliding and causing surface damage, thus ensuring the quality of the circuit board.

[0018] II. The printed circuit board conveying device provided by this utility model has multiple rows of chains. In particular, when a large pitch chain is used, its load-bearing capacity is improved, so it can be used for the processing of sized circuit boards.

[0019] Third, the printed circuit board conveying device provided by this utility model has a Teflon coating on the surface of the chain plate, which can reduce the friction between the circuit board and the chain plate surface, as well as the friction between the chain and the chain plate surface, and extend the service life of the chain plate. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1This is a schematic diagram of the printed circuit board conveying device of this utility model;

[0022] Figure 2 yes Figure 1 Enlarged diagram of part A in the diagram;

[0023] Figure 3 yes Figure 1 A schematic diagram of the printed circuit board conveying device from another angle;

[0024] Figure 4 yes Figure 3 A schematic diagram of one embodiment of the clamping device in the printed circuit board conveying device shown;

[0025] Figure 5 yes Figure 3 A schematic diagram of another embodiment of the clamping device in the printed circuit board conveying device shown. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solutions in the embodiments of this utility model, and to make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be further described below in conjunction with the accompanying drawings.

[0027] It should be noted that the descriptions of these embodiments are for the purpose of aiding understanding of the present invention, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0028] Please refer to the following: Figures 1 to 3 ,in Figure 1 This is a structural schematic diagram of the printed circuit board conveying device of this utility model. Figure 2 yes Figure 1 Enlarged diagram of part A in the diagram; Figure 3 yes Figure 1 The diagram shows another angle of the printed circuit board (PCB) conveying device. The PCB conveying device of this invention includes a mounting frame 1, a sprocket 2 mounted on the mounting frame 1, a chain 3 that meshes with the sprocket 2, multiple chain plates 4 connected to the chain 3 and used to carry the PCB 100, multiple clamping devices 5 mounted on the chain plates for clamping the edges of the PCB, sensors 6 located at both ends of the mounting frame 1 for detecting whether the PCB is in position, and a control device (not shown). The sensors are electrically connected to the control device, sending detection signal data to the control device. The control device is electrically connected to the clamping devices, controlling the clamping devices at corresponding positions to clamp or release the PCB.

[0029] The sprocket 2 is driven by a power unit and includes a driving sprocket and a driven sprocket. The chain 3 meshes with the sprocket 2, and the rotation of the sprocket drives the chain to move. In this embodiment, the chain 3 has a multi-row structure, which can improve its load-bearing capacity. Preferably, the chain pitch is 19.05mm, which is a large pitch chain, further improving its load-bearing capacity. In this embodiment, the chain has 4-5 rows.

[0030] The chain plate 4 and the chain 3 are connected by threads, and one chain link corresponds to one chain plate. In this embodiment, the surface of the chain plate has a Teflon layer, which can reduce the friction between the circuit board and the chain plate surface, as well as the friction between the chain and the chain plate surface, thus extending the service life of the chain plate.

[0031] The clamping device 5 is used to clamp the edge of the circuit board. The distance between two adjacent clamping devices is determined according to the size of the circuit board. Therefore, preferably, the clamping device is detachably connected to the chain plate. When the size of the circuit board being processed changes, the position of the clamping device can be adjusted.

[0032] The clamping device 5 can be a cam clamping mechanism or a motor-driven clamping device. Please refer to [link / reference]. Figure 4 ,yes Figure 3 The diagram shows a structural schematic of one embodiment of the clamping device in the printed circuit board conveying device. When the clamping device is a cam clamping mechanism, it includes a push rod 51, an eccentric wheel 52 connected to the push rod, a pressure rod 53 located on one side of the eccentric wheel, and a drive device 54 for driving the push rod. The eccentric wheel 52 is connected to the chain plate 4 via a rotating shaft 55. The push rod 51 drives the eccentric wheel to rotate, thereby causing the pressure rod on one side of the eccentric wheel to rotate horizontally. When the pressure rod rotates to above the circuit board, it presses the circuit board to prevent it from slipping. When the pressure rod rotates outside the circuit board, it releases the circuit board.

[0033] Please see Figure 5 ,yes Figure 3 The diagram shows another embodiment of the clamping device in the printed circuit board conveying device. When the clamping device is a motor-driven clamping device, it includes a motor 51a, a turntable 52a connected to the output shaft of the motor 51a, and a pressure rod 53a located on one side of the turntable 52a. The turntable 52a is connected to the chain plate through a rotating shaft. The motor drives the turntable to rotate, which in turn drives the pressure rod 53a to rotate in the horizontal direction. When the pressure rod rotates to above the circuit board, it presses the circuit board to prevent it from sliding. When the pressure rod rotates outside the circuit board, it releases the circuit board.

[0034] In addition to the structures mentioned above, clamping devices can also be spring clips or other similar structures.

[0035] Sensor 6 is used to detect whether the circuit board at the inlet and outlet ends is in place. It can be a photoelectric sensor or a fiber optic sensor. When the sensor at the inlet end of the mounting bracket detects the circuit board, the control device controls the corresponding clamping device to clamp the edge of the circuit board. The circuit board held by the clamping device moves towards the outlet end under the action of the chain.

[0036] When the sensor at the discharge end of the mounting frame detects the circuit board, the control device controls the corresponding clamping device to release the circuit board, and the circuit board is discharged to enter the next process. The chain plate flips until it is transported to the infeed end again, and the clamping device clamps the circuit board at the corresponding position again.

[0037] The printed circuit board (PCB) conveying device provided by this utility model includes a clamping device on the chain plate for holding the edges of the PCB. When the sensor at the infeed end detects the PCB, it controls the corresponding clamping device to clamp the PCB. When the sensor at the discharge end detects the PCB, it controls the corresponding clamping device to release the PCB, allowing the PCB to exit and proceed to the next process. During the conveying process, the clamping device limits the movement of the PCB to prevent slippage and surface damage, thus ensuring the quality of the PCB.

[0038] The printed circuit board conveying device provided by this utility model has a multi-row chain. In particular, when a large pitch chain is used, its load-bearing capacity is improved, so it can be used for the processing of sized circuit boards.

[0039] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. A printed circuit board conveying device, characterized in that, The device includes a mounting frame, a sprocket mounted on the mounting frame and driven by a power device, multiple rows of chains that mesh with the sprocket, multiple chain plates connected to the chains and used to support the circuit board, multiple clamping devices on the chain plates for clamping the edges of the circuit board, sensors located at both ends of the mounting frame for detecting whether the circuit board is in position, and a control device. The sensors are electrically connected to the control device, and the control device is electrically connected to the clamping devices. When the sensor at the feeding end of the mounting bracket detects the circuit board, the control device controls the corresponding clamping device to clamp the edge of the circuit board. When the sensor at the discharge end of the mounting bracket detects the circuit board, the control device controls the corresponding clamping device to release the circuit board, and the circuit board is discharged to enter the next process.

2. The printed circuit board conveying device according to claim 1, characterized in that, The chain consists of 4-5 rows.

3. The printed circuit board conveying device according to claim 2, characterized in that, The chain pitch is 19.05 mm.

4. The printed circuit board conveying device according to claim 1, characterized in that, The surface of the chain plate has a Teflon coating.

5. The printed circuit board conveying device according to claim 1, characterized in that, The sensor is a photoelectric sensor or a fiber optic sensor.

6. The printed circuit board conveying device according to claim 1, characterized in that, The clamping device is a cam clamping mechanism or a motor-driven clamping device.

7. The printed circuit board conveying device according to claim 6, characterized in that, The clamping device is a cam clamping mechanism, which includes a push rod, an eccentric wheel connected to the push rod, a pressure rod located on one side of the eccentric wheel, and a drive device for driving the push rod to move. The eccentric wheel is connected to the chain plate through a rotating shaft. The rotation of the eccentric wheel drives the pressure rod to rotate, and the pressure rod presses against or releases the circuit board.

8. The printed circuit board conveying device according to claim 6, characterized in that, The clamping device is a motor-driven clamping device, which includes a motor, a turntable connected to the output shaft of the motor, and a pressure rod disposed on one side of the turntable. The turntable is connected to the chain plate through a rotating shaft. The motor drives the turntable to rotate, and the turntable drives the pressure rod to rotate. The pressure rod presses against the circuit board or releases the circuit board.

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