A PCB parallel transfer device

Abstract

This utility model relates to a PCB parallel transfer device, including a frame and a transfer mechanism slidably mounted on the frame. The transfer mechanism includes a base plate, a conveying unit and an adjusting unit mounted on the base plate. The conveying unit includes a first vertical plate and a second vertical plate spaced apart and vertically arranged, and two conveyor belts respectively mounted on opposite sides of the first and second vertical plates. The two conveyor belts respectively support the opposite edges of the PCB and convey the PCB along a first direction. The adjusting unit can adjust the distance between the first and second vertical plates along a second direction. The PCB parallel transfer device designed by this utility model can adapt to PCBs of different widths, improving the compatibility of the device.

Description

Technical Field

[0001] This utility model relates to the field of PCB manufacturing technology, and in particular to a PCB parallel transfer device. Background Technology

[0002] As electronic products evolve towards lightweight and high-density integration, PCB design is showing a trend towards greater size and more complex layers. In the PCB manufacturing process, to improve production efficiency and shorten production cycles, automated conveyor lines are often used for PCB transfer. Due to space constraints, some conveyor lines are designed as U-shaped or Z-shaped lines, requiring transfer devices for reversal. Different types or models of PCBs vary significantly in width. Traditional transfer devices, with their fixed conveyor belt spacing, cannot accommodate PCBs with large width differences, resulting in poor compatibility of the transfer devices and consequently, poor production line compatibility, potentially leading to wasted capacity. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this invention is to design a PCB parallel transfer device that can adapt to PCBs of different widths and improve the device's compatibility.

[0004] The objective of this utility model is achieved through the following technical solution: Design a PCB parallel transfer device, including a frame and a transfer mechanism slidably mounted on the frame. The transfer mechanism includes a base plate, a conveying unit and an adjusting unit mounted on the base plate. The conveying unit includes a first vertical plate and a second vertical plate spaced apart and vertically arranged, and two conveyor belts respectively mounted on opposite sides of the first vertical plate and the second vertical plate. The two conveyor belts respectively support the opposite edges of the PCB and convey the PCB along a first direction. The adjusting unit can adjust the distance between the first vertical plate and the second vertical plate along a second direction.

[0005] In this solution, the PCB parallel transfer device connects to different conveyor lines, enabling cross-line PCB transfer. Specifically, the conveyor line in front of the transfer device directly connects to and transfers the PCB to the transfer mechanism, or the conveyor line in front of the transfer device transports the PCB to the processing or inspection process. After the process is completed, the PCB is manually or by a docking device fed into the transfer mechanism. The transfer mechanism moves smoothly along the second direction, connects to the conveyor line behind the transfer device, and transfers the PCB to the conveyor line along the first direction. When producing different types or models of PCBs, the PCB width varies. The conveyor line in front of the transfer device may correspond to multiple different conveyor lines behind the transfer device. By adjusting the distance between the first and second vertical plates along the second direction using an adjustment unit, the distance between the two conveyor belts is changed, thereby adapting to PCBs of different widths and improving the compatibility of the transfer device. The two conveyor belts support the two edges of the PCB respectively, and the synchronous transmission achieves smooth PCB transport.

[0006] Furthermore, the adjustment unit includes two drive shafts arranged parallel to each other along the second direction, a drive belt connecting the two drive shafts, and a drive member drivenly connected to the end of one of the drive shafts, wherein at least one of the first vertical plate and the second vertical plate is slidably sleeved on the two drive shafts.

[0007] In this scheme, two parallel transmission shafts are connected by a transmission belt to achieve synchronous rotation, ensuring the synchronous movement of the first vertical plate and the second vertical plate in the second direction. The transmission shaft can be a lead screw. At least one of the first vertical plate or the second vertical plate is sleeved on the two lead screws through a lead screw nut. The two lead screws are driven to rotate synchronously by a driving component, thereby driving the first vertical plate or the second vertical plate to move smoothly in the two directions.

[0008] Furthermore, the adjustment unit also includes a third vertical plate arranged parallel to the first vertical plate. The first vertical plate and the third vertical plate are fixedly arranged on the base plate, and the two ends of the two transmission shafts are respectively rotatably arranged on the first vertical plate and the third vertical plate.

[0009] In this scheme, the first vertical plate and the third vertical plate form an independent and rigid transmission system support structure. The second vertical plate is sleeved on the two screws by screw nut. The two screws are driven to rotate synchronously by the driving component, thereby driving the second vertical plate to move smoothly in two directions.

[0010] Furthermore, the adjustment unit also includes at least one guide shaft, the axis of which is parallel to the axis of the transmission shaft, and the second vertical plate is slidably sleeved on the guide shaft.

[0011] In this design, the guide shaft and drive shaft are arranged parallel to each other. The guide shaft can be a chrome-plated optical shaft with linear bearings, working in synergy with the threaded drive of the drive shaft to ensure more balanced force on the second vertical plate during adjustment. By simultaneously cooperating with both the drive shaft and the guide shaft, the second vertical plate forms a composite structure of "dual-axis guidance + drive," which effectively restricts the rotational freedom of the vertical plate during adjustment, reduces offset errors compared to a single drive shaft, and ensures accurate spacing adjustment.

[0012] Furthermore, the conveying unit also includes two tensioning units respectively disposed on the first vertical plate and the second vertical plate, the two tensioning units being used to adjust the tension of the two conveyor belts respectively.

[0013] Two tensioning units adjust the tension of the two conveyor belts independently, allowing for individual calibration to address differences in force on both sides. By adjusting the tension of the conveyor belts, it prevents slippage, misalignment, or detachment due to excessive looseness, or breakage or mechanical failure due to excessive tightness. Furthermore, the tensioning unit includes a tensioning wheel that contacts the surface of the conveyor belt, and the tensioning wheel is movable in a third direction.

[0014] The tensioning pulley moves along a third direction (perpendicular to the conveyor belt surface), allowing for continuous, stepless adjustment of tension. This adjustable stroke in the third direction directly counteracts the permanent stretching of the conveyor belt after long-term use, eliminating the need to shorten or replace the belt and reducing maintenance costs.

[0015] Furthermore, the tensioning unit provided on the first vertical plate also includes a support plate fixed on the first vertical plate, a slide plate slidably provided on the first vertical plate, and a rotating shaft rotatably provided on the support plate and threadedly connected to the slide plate. The tensioning wheel is fixed on the slide plate, and rotating the rotating shaft can drive the slide plate to move in a third direction.

[0016] The rotating shaft and the slide plate are connected by a thread. A handwheel or knob can be integrated into the end of the rotating shaft. When the rotating shaft is rotated, the slide plate moves in a third direction, achieving high-precision displacement control of the slide plate. The threaded pair can achieve mechanical self-locking, which can prevent the tension wheel from shifting under vibration or impact, and improve the stability of adjustment.

[0017] Furthermore, the tensioning wheel includes a fixed shaft and a wheel body rotatably mounted on the fixed shaft. The slide plate is located on the side of the first vertical plate opposite to the conveyor belt. The first vertical plate is provided with a guide hole, and the fixed shaft passes through the guide hole and is connected to the slide plate.

[0018] The sliding plate is positioned on the outer side of the first vertical plate, away from the conveyor belt. It is connected to the inner wheel via a fixed shaft passing through a guide hole, forming an "outer adjustment - inner action" layout. This reduces the space occupied between the first and second vertical plates and increases the adjustment stroke between them. The guide hole and the fixed shaft form a sliding guide pair, limiting the tension wheel to move only in the third direction and eliminating radial sway of the wheel during transmission.

[0019] Furthermore, two tensioning rollers are provided, and the two tensioning rollers are located at the same height.

[0020] With two tensioning rollers at the same height, they symmetrically clamp the conveyor belt, increasing the pressure between the belt and the drive wheel, and thus increasing the friction between them, effectively preventing slippage. The dual tensioning roller design creates redundancy; if one tensioning roller fails due to bearing malfunction, the other can temporarily maintain basic tension, preventing emergency production line shutdowns.

[0021] Furthermore, the first or second vertical plate is also provided with a sensing unit for sensing the position of the PCB.

[0022] The sensing unit is used to sense the position of the PCB to control the start and stop of the conveyor belt. One sensing unit can be set at the inlet and outlet of the transplanting mechanism. When the PCB moves in, the inlet sensing unit sends a signal to the controller to control the conveyor belt to stop rotating when it senses that the PCB has entered the transplanting mechanism. Then, it controls the transplanting mechanism to move laterally to the downstream conveyor line docking position. After moving laterally to the position, it controls the conveyor belt to rotate to transfer the PCB. When the outlet sensing unit senses that the PCB has moved out of the transplanting mechanism, it sends a signal to the controller to control the conveyor belt to stop rotating. Then, it controls the transplanting mechanism to move laterally to the upstream conveyor line docking position, thus completing this transplanting cycle.

[0023] Compared with the prior art, the beneficial effects of this utility model are: In this solution, the PCB parallel transfer device connects to different conveyor lines, enabling cross-line PCB transfer. Specifically, the conveyor line in front of the transfer device directly connects to and transfers the PCB to the transfer mechanism, or the conveyor line in front of the transfer device transports the PCB to the processing or inspection process. After the process is completed, the PCB is manually or by a docking device fed into the transfer mechanism. The transfer mechanism moves smoothly along the second direction, connects to the conveyor line behind the transfer device, and transfers the PCB to the conveyor line along the first direction. When producing different types or models of PCBs, the PCB width varies. The conveyor line in front of the transfer device may correspond to multiple different conveyor lines behind the transfer device. By adjusting the distance between the first and second vertical plates along the second direction using an adjustment unit, the distance between the two conveyor belts is changed, thereby adapting to PCBs of different widths and improving the compatibility of the transfer device. The two conveyor belts support the two edges of the PCB respectively, and the synchronous transmission achieves smooth PCB transport. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a PCB parallel transfer device according to an embodiment of the present invention.

[0025] Figure 2 This is an assembly drawing of one side of the first vertical plate according to an embodiment of the present invention.

[0026] Figure 3 This is an assembly diagram of the other side of the first vertical plate in one embodiment of the present invention.

[0027] Figure 4 for Figure 2 A schematic diagram of its breakdown.

[0028] Illustration: 1. Frame; 2. Transplanting mechanism; 21. Base plate; 22. Conveying unit; 221. First vertical plate; 2211. Guide hole; 222. Second vertical plate; 223. Conveyor belt; 23. Adjusting unit; 231. Drive shaft; 232. Drive belt; 233. Drive component; 234. Third vertical plate; 235. Guide shaft; 24. Tensioning unit; 241. Tensioning wheel; 2411. Wheel body; 2412. Fixed shaft; 242. Support plate; 243. Slide plate; 244. Rotating shaft; 25. Sensing unit. Detailed Implementation

[0029] To facilitate understanding of this invention, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the invention. However, this invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0030] like Figure 1As shown, this embodiment provides a PCB parallel transfer device, including a frame 1 and a transfer mechanism 2 slidably disposed on the frame 1. The transfer mechanism 2 includes a base plate 21, a conveying unit 22 disposed on the base plate 21, and an adjusting unit 23. The conveying unit 22 includes a first vertical plate 221 and a second vertical plate 222 that are spaced apart and vertically disposed, and two conveyor belts 223 disposed on opposite sides of the first vertical plate 221 and the second vertical plate 222, respectively. The two conveyor belts 223 respectively support the edges of opposite sides of the PCB and convey the PCB along a first direction. The adjusting unit 23 can adjust the spacing between the first vertical plate 221 and the second vertical plate 222 along a second direction.

[0031] It should be noted that the base plate 21 is mounted on the frame 1 via a linear slide rail. The frame 1 is also equipped with a transplanting drive unit for driving the base plate 21 to move in the second direction. The transplanting drive unit includes a drive motor mounted on the frame 1, which rotates a lead screw mounted on the frame 1. The base plate 21 is threadedly connected to the lead screw via a lead screw nut. The drive motor drives the lead screw to rotate, thereby realizing the translation of the transplanting mechanism 2 in the second direction. Alternatively, the transplanting drive unit can also use other transmission methods, not limited to lead screw transmission. For example, a synchronous belt linear module or a linear motor module can also be used to achieve the linear translation function.

[0032] Additionally, the conveying unit 22 also includes wheel sets and drive motors respectively mounted on the first vertical plate 221 and the second vertical plate 222. Taking the first vertical plate 221 as an example, the wheel set includes a drive wheel connected to the output end of the drive motor and two driven wheels. The drive wheel is located near the bottom of the first vertical plate 221, and the two driven wheels are located near the top of the first vertical plate 221. The two driven wheels are at the same height to ensure that the conveyor belt 223 between the two driven wheels remains horizontal, thus providing support for the edge of the PCB. The installation of the wheel set and drive motor on the second vertical plate 222 is the same as that on the first vertical plate 221, and will not be described again here.

[0033] like Figure 1As shown, the adjustment unit 23 includes a third vertical plate 234 arranged parallel to the first vertical plate 221, two drive shafts 231 arranged parallel to each other along a second direction, a drive belt 232 connecting the two drive shafts 231, and a drive member 233 drivenly connected to the end of one of the drive shafts 231. At least one of the first vertical plate 221 and the second vertical plate 222 is slidably sleeved on the two drive shafts 231. In this scheme, the first vertical plate 221 and the third vertical plate 234 are fixedly mounted on the base plate 21, and the two ends of the two drive shafts 231 are rotatably mounted on the first vertical plate 221 and the third vertical plate 234 respectively through bearing components. Synchronous pulleys are provided at the ends of the two drive shafts 231 near the third vertical plate 234, and the drive belt 232 is nested on the two synchronous pulleys. The drive member 233 can be a handwheel or a drive motor, which drives the two drive shafts 231 to rotate synchronously. The first vertical plate 221 and the third vertical plate 234 form an independent and rigid transmission system support structure. Two parallel transmission shafts 231 are connected by a transmission belt 232 to achieve synchronous rotation. The transmission shafts 231 can be lead screws. The second vertical plate 222 is sleeved on the two lead screws by lead screw nuts. The two lead screws are driven to rotate synchronously by the driving component 233, thereby driving the second vertical plate 222 to move smoothly in two directions.

[0034] Furthermore, the adjustment unit 23 also includes at least one guide shaft 235, the axis of which is parallel to the axis of the transmission shaft 231. The second vertical plate 222 is slidably sleeved on the guide shaft 235. In this scheme, two guide shafts 235 are provided, arranged parallel to the transmission shaft 231 and located below it. The guide shafts 235 can be made of chrome-plated optical shafts with linear bearings, which work in conjunction with the threaded drive of the transmission shaft 231 to make the force on the second vertical plate 222 more balanced during the adjustment process. By cooperating with both the transmission shaft 231 and the guide shaft 235, the second vertical plate 222 forms a "dual-axis guide + drive" composite structure, which can effectively limit the rotational freedom of the vertical plate during the adjustment process, reduce offset error compared to a single drive by the transmission shaft 231, and ensure the accuracy of the spacing adjustment.

[0035] like Figure 1 As shown, the conveying unit 22 also includes two tensioning units 24 respectively disposed on the first vertical plate 221 and the second vertical plate 222. The two tensioning units 24 are used to adjust the tension of the two conveyor belts 223. The two tensioning units 24 adjust the tension of the two conveyor belts 223 respectively, allowing for individual calibration to address differences in force on both sides. By adjusting the tension of the conveyor belts 223, slippage, misalignment, or detachment due to excessive looseness, or breakage or mechanical failure due to excessive tightness, can be prevented. like Figures 2 to 4As shown, taking the tensioning unit 24 on the first vertical plate 221 as an example, the tensioning unit 24 includes a tensioning wheel 241 in contact with the surface of the conveyor belt 223, a support plate 242 fixed on the first vertical plate 221, a sliding plate 243 slidably disposed on the first vertical plate 221, and a rotating shaft 244 rotatably disposed on the support plate 242 and threadedly connected to the sliding plate 243. The sliding plate 243 and the first vertical plate 221 are slidably connected via a slide rail. The tensioning wheel 241 is fixed on the sliding plate 243. Rotating the rotating shaft 244 can drive the sliding plate 243 to move in a third direction, thereby driving the tensioning wheel 241 to move in a third direction. The rotating shaft 244 and the sliding plate 243 are threadedly connected. A handwheel or knob can be integrated at the end of the rotating shaft 244. When the rotating shaft 244 is rotated, the sliding plate 243 moves in a third direction, realizing high-precision displacement control of the sliding plate 243. The threaded pair can achieve mechanical self-locking, which can prevent the tensioning wheel 241 from shifting under vibration or impact, and improve the stability of adjustment. The tension pulley 241 moves along a third direction (perpendicular to the surface of the conveyor belt 223), enabling continuous stepless adjustment of tension. The adjustable stroke of the tension pulley 241 in the third direction directly counteracts the permanent stretching of the conveyor belt 223 after long-term use, eliminating the need to shorten or replace the conveyor belt 223 and reducing maintenance costs.

[0036] It should be noted that the tensioning wheel 241 includes a fixed shaft 2412 and a wheel body 2411 rotatably mounted on the fixed shaft 2412. The slide plate 243 is located on the side of the first vertical plate 221 facing away from the conveyor belt 223. The first vertical plate 221 has a guide hole 2211, through which the fixed shaft 2412 passes and connects to the slide plate 243. The slide plate 243 is located on the outer side of the first vertical plate 221 facing away from the conveyor belt 223, and is connected to the inner wheel body 2411 via the fixed shaft 2412 passing through the guide hole 2211, forming an "outer adjustment - inner action" layout. This reduces the space occupied between the first vertical plate 221 and the second vertical plate 222, and increases the adjustment stroke between the first vertical plate 221 and the second vertical plate 222. The guide hole 2211 and the fixed shaft 2412 form a sliding guide pair, restricting the tensioning wheel 241 to move only in a third direction, thus eliminating radial sway of the wheel body 2411 during transmission.

[0037] In addition, two tensioning rollers 241 are provided, located at the same height and on both sides of the drive wheel, forming a symmetrical clamp on the conveyor belt 223. This increases the pressure between the conveyor belt 223 and the drive wheel, thereby increasing the friction between them and effectively preventing slippage. The double tensioning roller design forms a redundant structure. When one tensioning roller 241 fails due to bearing failure, the other tensioning roller 241 can temporarily maintain basic tension, avoiding emergency shutdown of the production line.

[0038] It should be noted that the tensioning unit 24 on the second vertical plate 222 has the same structure as the tensioning unit 24 on the first vertical plate 221, and will not be described again here.

[0039] Furthermore, the first vertical plate 221 or the second vertical plate 222 is also provided with a sensing unit 25 for sensing the position of the PCB. For example... Figure 2 As shown, in this embodiment, the sensing unit 25 is disposed on the first vertical plate 221. The sensing unit 25 is used to sense the position of the PCB to control the start and stop of the conveyor belt 223. One sensing unit 25 can be disposed at the inlet and outlet of the transplanting mechanism 2. When the PCB moves in, the sensing unit 25 at the inlet transmits a signal to the controller when it senses that the PCB has entered the transplanting mechanism 2. The controller controls the conveyor belt 223 to stop rotating and then controls the transplanting mechanism 2 to move laterally to the downstream conveyor line docking position. After moving laterally to the position, the controller controls the conveyor belt 223 to rotate to transfer the PCB. When the sensing unit 25 at the outlet senses that the PCB has moved out of the transplanting mechanism 2, it transmits a signal to the controller to control the conveyor belt 223 to stop rotating and then controls the transplanting mechanism 2 to move laterally to the upstream conveyor line docking position, thus completing this transplanting cycle.

[0040] It should be noted that the drive control of this device, including the lateral movement of the transplanting mechanism 2 and the conveying of the conveying unit 22, is controlled by a controller. The controller can be a PLC controller, which is existing technology and will not be described in detail here.

[0041] It should be noted that the frame 1 of this device can be covered with a skin to protect the transplanting mechanism 2. Holes can be made at the PCB entrance and exit to prevent debris from falling into the path of the transplanting mechanism 2 and to provide safety protection.

[0042] In this embodiment, the PCB parallel transfer device connects to different conveyor lines at the front and rear, realizing cross-line PCB transfer. Specifically, the conveyor line at the front of the transfer device directly connects and transfers the PCB to the transfer mechanism 2, or the conveyor line at the front of the transfer device transports the PCB to the processing or inspection process. After the process is completed, the PCB is manually or by the connection device to be fed into the transfer mechanism 2. The transfer mechanism 2 moves smoothly along the second direction, connects with the conveyor line at the rear of the transfer device, and transfers the PCB to the conveyor line along the first direction. When producing different types or models of PCBs, the PCB width varies. The conveyor line at the front of the transfer device may correspond to multiple different conveyor lines at the rear of the transfer device. By adjusting the distance between the first vertical plate 221 and the second vertical plate 222 along the second direction using the adjustment unit 23, the distance between the two conveyor belts 223 is changed, thereby adapting to PCBs of different widths and improving the compatibility of the transfer device. The two conveyor belts 223 support the two edges of the PCB respectively, and the PCB is transported smoothly through synchronous transmission. In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0043] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, the inclusion of "first," "second," etc., in a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A parallel transplanting device for PCBs, characterized in that, The device includes a frame and a transplanting mechanism slidably mounted on the frame. The transplanting mechanism includes a base plate, a conveying unit mounted on the base plate, and an adjusting unit. The conveying unit includes a first vertical plate and a second vertical plate that are spaced apart and vertically arranged, and two conveyor belts that are respectively mounted on opposite sides of the first vertical plate and the second vertical plate. The two conveyor belts respectively support the opposite edges of the PCB and convey the PCB along a first direction. The adjusting unit can adjust the distance between the first vertical plate and the second vertical plate along a second direction.

2. The PCB parallel transfer device according to claim 1, characterized in that, The adjustment unit includes two drive shafts arranged parallel to each other along a second direction, a drive belt connecting the two drive shafts, and a drive member drivenly connected to the end of one of the drive shafts. At least one of the first vertical plate and the second vertical plate is slidably sleeved on the two drive shafts.

3. The PCB parallel transfer device according to claim 2, characterized in that, The adjustment unit also includes a third vertical plate arranged parallel to the first vertical plate. The first vertical plate and the third vertical plate are fixedly arranged on the base plate, and the two ends of the two transmission shafts are respectively rotatably arranged on the first vertical plate and the third vertical plate.

4. The PCB parallel transfer device according to claim 3, characterized in that, The adjustment unit further includes at least one guide shaft, the axis of which is parallel to the axis of the transmission shaft, and the second vertical plate is slidably sleeved on the guide shaft.

5. The PCB parallel transfer device according to claim 1, characterized in that, The conveying unit also includes two tensioning units respectively disposed on the first vertical plate and the second vertical plate, the two tensioning units being used to adjust the tension of the two conveyor belts respectively.

6. The PCB parallel transfer device according to claim 5, characterized in that, The tensioning unit includes a tensioning wheel that contacts the surface of the conveyor belt, and the tensioning wheel is movable in a third direction.

7. The PCB parallel transfer device according to claim 6, characterized in that, The tensioning unit disposed on the first vertical plate further includes a support plate fixed on the first vertical plate, a slide plate slidably disposed on the first vertical plate, and a rotating shaft rotatably disposed on the support plate and threadedly connected to the slide plate. The tensioning wheel is fixed on the slide plate, and rotating the rotating shaft can drive the slide plate to move in a third direction.

8. The PCB parallel transfer device according to claim 7, characterized in that, The tensioning wheel includes a fixed shaft and a wheel body rotatably mounted on the fixed shaft. The slide plate is located on the side of the first vertical plate opposite to the conveyor belt. The first vertical plate has a guide hole, and the fixed shaft passes through the guide hole and is connected to the slide plate.

9. The PCB parallel transfer device according to claim 8, characterized in that, Two tensioning rollers are provided, and the two tensioning rollers are located at the same height.

10. The PCB parallel transfer device according to claim 1, characterized in that, The first or second vertical plate is also provided with a sensing unit for sensing the position of the PCB.

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