Positioning conveying equipment and PCB automatic detection equipment

Abstract

The utility model relates to the technical field of automation equipment, in particular to a positioning and conveying device and a PCB automatic detection device.The positioning and conveying device comprises a supporting base, a positioning mechanism and a conveying mechanism, and the conveying mechanism is installed on the supporting base and used for moving a piece to be conveyed in the first direction; a plurality of first through holes distributed at intervals in the first direction are formed in the conveying mechanism; the positioning mechanism comprises a beating and aligning assembly, a jacking driving assembly and a plurality of roller assemblies arranged at intervals in the first direction; the roller assemblies are correspondingly arranged in the first through holes, and the beating and aligning assembly and the jacking driving assembly are both installed on the supporting base. The jacking driving assembly is used for driving the rolling wheel part to move in the first through hole in the second direction, so that the part to be conveyed is transferred between the conveying mechanism and the rolling wheel assembly; the beating and aligning assembly is used for driving the to-be-conveyed pieces to move in the third direction and positioning the to-be-conveyed pieces. The positioning conveying equipment is compact in structure and small in occupied space, and the to-be-conveyed parts are not prone to being scratched.

Description

Technical Field

[0001] This utility model relates to the field of automation equipment technology, and in particular to a positioning and conveying device and an automatic PCB inspection device. Background Technology

[0002] After PCB (Printed Circuit Board) manufacturing is completed, the PCB quality needs to be inspected to prevent substandard PCBs from entering the market. With the continuous development of automation technology, more and more manufacturers are using automatic inspection equipment to inspect PCB quality. Automatic inspection equipment typically includes a camera and a conveyor line. The camera can automatically inspect the PCBs on the conveyor line. To ensure the accuracy of PCB inspection, a positioning mechanism is usually configured on the conveyor line. The positioning mechanism can move the PCB on the conveyor line until the PCB comes into contact with the positioning plate, thus completing the positioning function of the PCB on the conveyor line. The camera then inspects the PCB that has been positioned on the conveyor line.

[0003] In the existing technology, although the positioning mechanism can drive the PCB to move on the conveyor line to complete the positioning function of the PCB, during the process of the PCB moving on the conveyor line, there is sliding friction between the PCB and the conveyor line, which can easily cause accidents such as scratches and abrasions to the PCB, thus reducing the quality of the PCB. Utility Model Content

[0004] This utility model provides a positioning and conveying device and an automatic PCB inspection device to solve the technical problems in the prior art, such as PCB scratches easily occurring during the movement of PCBs on automatic feeding devices.

[0005] An embodiment of the present invention provides a positioning and conveying device, including a support base, a positioning mechanism and a conveying mechanism. The conveying mechanism is mounted on the support base and is used to move the conveyed part along a first direction. The conveying mechanism is provided with a plurality of first through holes spaced apart along the first direction.

[0006] The positioning mechanism includes a aligning component, a lifting drive component, and a plurality of roller assemblies spaced apart along a first direction; each roller assembly is correspondingly disposed in each of the first through holes, and both the aligning component and the lifting drive component are mounted on the support base; the lifting drive component is connected to the roller assembly and is used to drive the roller assembly to move along a second direction in the first through hole, so that the part to be transported is transferred between the conveying mechanism and the roller assembly; the aligning component is used to drive the part to be transported to move along a third direction and position the part to be transported; wherein, the first direction, the second direction, and the third direction intersect each other.

[0007] Optionally, the alignment assembly includes an alignment drive component and a clapping plate and a positioning plate, both mounted on the support base; the alignment drive component is connected to the clapping plate and is used to drive the clapping plate to move the part to be conveyed on the roller assembly along a third direction and abut against the positioning plate.

[0008] Optionally, the positioning mechanism further includes a base, and the roller assembly includes a support frame and a plurality of rollers. All the support frames are spaced apart on the base along the first direction, and each support frame is equipped with a plurality of rollers spaced apart along the third direction. The lifting drive assembly is connected to the base, and the lifting drive assembly is used to drive the rollers to move along the third direction in the first through hole through the base and the support frame.

[0009] Optionally, the positioning and conveying device further includes a plurality of baffles, which are installed on the support base and located in the first through hole; the baffles are used to block the first through hole.

[0010] Optionally, the baffle is provided with a plurality of second through holes spaced apart along the third direction; the support frame is provided with a plurality of support arms spaced apart along the third direction at one end away from the base, and at least one of the rollers is rotatably mounted on each support arm, and the support arms are slidably inserted into the second through holes one by one.

[0011] Optionally, the positioning mechanism further includes a guide installed between the support and the base, the guide being used to guide the movement of the base when it moves in the second direction.

[0012] Optionally, the aligning drive component includes an aligning motor, a first pulley, a second pulley, and a first transmission belt wound between the first pulley and the second pulley. The first pulley and the second pulley are rotatably mounted on the support base at intervals in a third direction. The aligning motor is mounted on the support base and connected to the first pulley. The aligning plate is connected to the first transmission belt.

[0013] Optionally, the conveying mechanism includes a conveying drive assembly and a plurality of conveying rollers spaced apart on the support along a first direction; the conveying drive assembly is mounted on the support and connected to the conveying rollers, and is used to drive the conveying rollers to move the workpiece to be conveyed along the first direction; the first through hole is disposed between two adjacent conveying rollers.

[0014] Optionally, the conveying drive assembly includes a conveying motor, a third pulley, a fourth pulley, a second transmission belt, a third transmission belt, and a plurality of fifth pulleys that are mounted one-to-one on the conveying rollers; the conveying motor is mounted on the support base and connected to the third pulley, the fourth pulley is mounted on one of the conveying rollers, the second transmission belt is wound around the third pulley and the fourth pulley, and the third transmission belt is wound around all the fifth pulleys.

[0015] Optionally, the positioning mechanism further includes a support member, one end of which is connected to the lifting drive assembly, and the other end of which passes through the first through hole and is connected to the clapper.

[0016] Optionally, the clapper is provided with a clearance groove for the roller assembly to pass through.

[0017] Another embodiment of this utility model provides an automatic PCB inspection device, including an inspection device and the aforementioned positioning and conveying device. The positioning and conveying device is used to position the PCB board and convey the PCB board to the inspection device, and the inspection device is used to inspect the PCB board.

[0018] In this invention, after the conveying mechanism conveys the workpiece to be conveyed to the top of the roller assembly along a first direction, the lifting drive assembly drives the roller assembly to move upward along a second direction, allowing the roller assembly to push away the workpiece to be conveyed from the conveying mechanism. The aligning assembly then moves the workpiece to be conveyed on the roller assembly along a third direction, thus completing the positioning function of the workpiece on the roller assembly. The lifting drive assembly then drives the roller assembly downward along the second direction, transferring the workpiece to be conveyed from the roller assembly to the conveying mechanism, which then moves the workpiece to be conveyed along the first direction. In this invention, during the process of the aligning assembly moving the workpiece to be conveyed on the roller assembly, there is rolling friction between the workpiece and the roller assembly, reducing the frictional force between them and ensuring the quality of the workpiece. In addition, the lifting drive assembly can drive the roller assembly to move in the second direction in the first through hole, so that the roller assembly is located in the middle of the conveying mechanism, and the lifting drive assembly and the aligning assembly are located below the conveying mechanism. This positioning conveying device has a compact structure and occupies little space. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model 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.

[0020] Figure 1 This is a schematic diagram of the structure of a positioning and conveying device provided in an embodiment of the present invention;

[0021] Figure 2 This is a side view of a positioning and conveying device provided in an embodiment of the present invention;

[0022] Figure 3 A top view of a positioning and conveying device provided in an embodiment of this utility model;

[0023] Figure 4 A partial structural schematic diagram of a positioning and conveying device provided in one embodiment of this utility model.

[0024] The reference numerals in the accompanying drawings are as follows:

[0025] 1. Support base; 2. Positioning mechanism; 20. Alignment assembly; 21. Alignment drive component; 211. Alignment motor; 212. First pulley; 213. Second pulley; 214. First transmission belt; 22. Alignment plate; 221. Clearance groove; 23. Positioning plate; 24. Lifting drive assembly; 25. Roller assembly; 251. Support frame; 2511. Support arm; 252. Roller component; 26. Base; 27. Guide component; 28. Support component; 3. Conveying mechanism; 31. First through hole; 32. Conveying drive assembly; 321. Conveying motor; 322. Third pulley; 323. Fourth pulley; 324. Second transmission belt; 325. Third transmission belt; 326. Fifth pulley; 33. Conveying roller; 4. Baffle; 41. Second through hole. Detailed Implementation

[0026] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] like Figures 1 to 4As shown, an embodiment of the present invention provides a positioning and conveying device, including a support base 1, a positioning mechanism 2, and a conveying mechanism 3. The conveying mechanism 3 is mounted on the support base 1 and is used to move the part to be conveyed along a first direction. The conveying mechanism 3 is provided with a plurality of first through holes 31 spaced apart along the first direction. It can be understood that the conveying mechanism 3 includes, but is not limited to, conveying rollers 33, conveyor belts, etc.; the part to be conveyed includes, but is not limited to, circuit boards, glass plates, etc.; the first through holes 31 extend along a third direction perpendicular to the first direction.

[0028] The positioning mechanism 2 includes a aligning component 20, a lifting drive component 24, and a plurality of roller components 25 spaced apart along a first direction. Each roller component 25 is correspondingly disposed in each of the first through holes 31. The lifting drive component 24 and the aligning component 20 are both mounted on the support base 1. The lifting drive component 24 is connected to the roller components 25 and is used to drive the roller components 252 to move along a second direction in the first through hole 31, so that the part to be transported is transferred between the conveying mechanism 3 and the roller components 25. The aligning component 20 drives the part to be transported to move along a third direction to position the part to be transported. The first direction, the second direction, and the third direction intersect each other. Preferably, the first direction, the second direction, and the third direction are perpendicular to each other; it is understood that the lifting drive assembly 24 includes, but is not limited to, a pneumatic cylinder, a hydraulic cylinder, a linear motor, and a lead screw and nut assembly; when the roller assembly 25 moves up along the second direction, the roller assembly 25 can push away the part to be conveyed on the conveying mechanism 3; when the roller assembly 25 moves down along the second direction, the part to be conveyed on the roller assembly 25 falls onto the conveying mechanism 3.

[0029] Specifically, after the conveying mechanism 3 conveys the workpiece to be conveyed to the top of the roller assembly 25 along the first direction, the lifting drive assembly 24 drives the roller assembly 25 to move upward along the second direction, allowing the roller assembly 25 to push away the workpiece to be conveyed on the conveying mechanism 3. The aligning assembly 20 then moves the workpiece to be conveyed on the roller assembly 25 along the third direction, thus completing the positioning function of the workpiece on the roller assembly 25. The lifting drive assembly 24 then drives the roller assembly 25 downward along the second direction, transferring the workpiece to be conveyed on the roller assembly 25 to the conveying mechanism 3, which then moves the workpiece to be conveyed along the first direction. In this invention, during the process of the aligning assembly 20 moving the workpiece to be conveyed on the roller assembly 25, there is rolling friction between the workpiece and the roller assembly 25, reducing the frictional force between them and ensuring the quality of the workpiece. In addition, the lifting drive assembly 24 can drive the roller assembly 25 to move in the second direction in the first through hole 31, so that the roller assembly 25 is located in the middle of the conveying mechanism 3, and the lifting drive assembly 24 and the aligning assembly 20 are located below the conveying mechanism 3. This positioning conveying device has a compact structure and occupies little space.

[0030] In one embodiment, such as Figure 1 As shown, the alignment assembly 20 includes a clapping plate 22 and an alignment driving component 21 and a positioning plate 23, both mounted on the support base 1. The alignment driving component 21 is connected to the clapping plate 22 and is used to drive the clapping plate 22 to move the workpiece to be conveyed on the roller assembly 25 along a third direction and abut against the positioning plate 23. It can be understood that the alignment driving component 21 includes, but is not limited to, a belt drive assembly, a lead screw and nut assembly, etc., and the alignment component and the positioning plate 23 are spaced apart along a third direction.

[0031] Specifically, after the roller assembly 25 pushes away from the workpiece to be conveyed on the conveying mechanism 3, the aligning drive component 21 drives the aligning plate 22 to move towards the end near the positioning plate 23. The aligning plate 22 drives the workpiece to be conveyed to move on the roller assembly 25 until the workpiece to be conveyed abuts against the positioning plate, thus completing the positioning function of the workpiece to be conveyed on the roller assembly 25. In this embodiment, the aligning assembly 20 has a simple structure and low manufacturing cost.

[0032] In one embodiment, such as Figure 4As shown, the positioning mechanism 2 further includes a base 26, and the roller assembly 25 includes a support frame 251 and a plurality of rollers 252. All the support frames 251 are spaced apart on the base 26 along the first direction, and each support frame 251 is equipped with a plurality of rollers 252 spaced apart along the third direction. The lifting drive assembly 24 is connected to the base 26, and the lifting drive assembly 24 is used to drive the rollers 252 to move along the third direction in the first through hole 31 through the base 26 and the support frames 251. It can be understood that the lifting drive assembly 24 connects all the support frames 251 through the base 26.

[0033] Specifically, when the lifting drive assembly 24 drives all the support frames 251 to move upward along the second direction via the base 26, the support frames 251 can drive the roller assembly 25 to extend above the conveying mechanism 3 through the first through hole 31, so that the part to be conveyed is separated from the conveying mechanism 3 and located on the roller assembly 252; during the process of the clapper 22 driving the part to be conveyed to move along the third direction, the roller assembly 252 rolls below the part to be conveyed, so that the rolling friction between the part to be conveyed and the roller assembly 252 is small.

[0034] In one embodiment, such as Figure 3 As shown, the positioning and conveying device also includes multiple baffles 4, which are mounted on the support base 1 and located in the first through hole 31; the baffles 4 are used to block the first through hole 31. It can be understood that the baffles 4 are arranged one-to-one with the first through hole 31, and the baffles 4 can prevent the parts to be conveyed on the conveying mechanism 3 from falling from the first through hole 31, ensuring the stability of the positioning and conveying device in moving the parts to be conveyed.

[0035] In one embodiment, such as Figure 3 and Figure 4 As shown, the baffle 4 is provided with a plurality of second through holes 42 spaced apart along the third direction; it can be understood that the spacing between the second through holes 42 is small, so that the conveyed part will not fall out of the second through holes 42.

[0036] The support frame 251, at its end opposite to the base 26, has multiple support arms 2511 spaced apart along the third direction. Each support arm 2511 is rotatably mounted with at least one roller 252. The support arms 2511 are slidably inserted into the second through holes 42. It is understood that a baffle 4 is provided between adjacent second through holes 42, thereby preventing the conveyed part from falling from the first through hole 31. The support frame 251 drives the roller 252 to move upward along the second direction, and the roller 252 can be positioned above the second through hole 42. The support frame 251 also drives the roller 252 to move downward along the second direction, and the roller 252 can be positioned in or below the second through hole 42.

[0037] In one embodiment, such as Figure 1 and Figure 2 As shown, the positioning mechanism 2 further includes a guide member 27 installed between the support base 1 and the base 26. The guide member 27 is used to guide the movement of the base 26 along the second direction. Understandably, the guide member 27 includes a sleeve slide rod assembly, a guide rail slider assembly, etc. During the process of the lifting drive assembly 24 driving the base 26 to move along the second direction, the guide member 27 can guide the base 26 along the second direction, ensuring the stability of the movement of the base 26 and the roller assembly 25 along the second direction.

[0038] In one embodiment, such as Figure 4 As shown, the aligning drive component 21 includes an aligning motor 211, a first pulley 212, a second pulley 213, and a first transmission belt 214 wound between the first pulley 212 and the second pulley 213. The first pulley 212 and the second pulley 213 are rotatably mounted on the support base 1 at intervals in a third direction. The aligning motor 211 is mounted on the support base 1 and connected to the first pulley 212. The aligning plate 22 is connected to the first transmission belt 214. It can be understood that the first transmission belt 214 meshes with both the first pulley 212 and the second pulley 213; the first transmission belt 214 can be connected to the aligning plate 22 via a belt clip.

[0039] Specifically, the aligning motor 211 drives the first pulley 212 to rotate, and the first pulley 212 drives the aligning plate 22 to move along a third direction via the first transmission belt 214. In this embodiment, the aligning drive component 21 drives the aligning plate 22 to have a large moving stroke in the third direction, so that the positioning and conveying device can transport and position parts of different widths to be transported, thereby improving the applicability and versatility of the positioning and conveying device.

[0040] In one embodiment, such as Figures 1 to 4 As shown, the conveying mechanism 3 includes a conveying drive assembly 32 and a plurality of conveying rollers 33 spaced apart on the support base 1 along a first direction. The conveying drive assembly 32 is mounted on the support base 1 and connected to the conveying rollers 33, and is used to drive the conveying rollers 33 to move the workpiece to be conveyed along the first direction. The first through hole 31 is disposed between two adjacent conveying rollers 33. It can be understood that the conveying drive assembly 32 includes, but is not limited to, a motor, etc. The conveying drive assembly 32 drives the conveying rollers 33 to rotate, and the conveying rollers 33 can move the workpiece to be conveyed along the first direction. The workpiece to be conveyed and the conveying rollers 33 also have rolling friction, so the friction between the workpiece to be conveyed and the conveying rollers 33 is small, which further ensures the quality of the workpiece to be conveyed.

[0041] In one embodiment, such as Figures 1 to 3 As shown, the conveying drive assembly 32 includes a conveying motor 321, a third pulley 322, a fourth pulley 323, a second transmission belt 324, a third transmission belt 325, and a plurality of fifth pulleys 326 correspondingly mounted on the conveying rollers 33. The conveying motor 321 is mounted on the support base 1 and connected to the third pulley 322. The fourth pulley 323 is mounted on one of the conveying rollers 33. The second transmission belt 324 is wound around the third pulley 322 and the fourth pulley 323, and the third transmission belt 325 is wound around all the fifth pulleys 326. It is understood that the second transmission belt 324 engages with the third pulley 322 and the fourth pulley 323, and the third transmission belt 325 engages with all the fifth pulleys 326. Specifically, the conveying motor 321 drives one of the conveying rollers 33 to rotate via the third pulley 322, the second transmission belt 324, and the fourth pulley 323. The conveying roller 33 drives all the conveying rollers 33 to rotate via the fifth pulley 326 and the third transmission belt 325. In this embodiment, the conveying drive assembly 32 has a simple structure, low manufacturing cost, and small footprint.

[0042] In one embodiment, such as Figure 1 and Figure 4 As shown, the positioning mechanism 2 further includes a support member 28. One end of the support member 28 is connected to the lifting drive assembly 24, and the other end of the support member 28 passes through the first through hole 31 and connects to the clapper plate 22. Understandably, the bottom of the support member 28 is located below the first through hole 31 and connected to the lifting drive assembly 24, while the bottom of the support member 28 is located above the first through hole 31 and connected to the clapper plate 22. In this embodiment, the lifting drive assembly 24 is located below the conveying mechanism 3, improving the compactness of the positioning and conveying device.

[0043] In one embodiment, such as Figure 4 As shown, the clapper 22 is provided with a clearance groove 221 for the roller assembly 25 to pass through. Understandably, during the movement of the clapper 22 along the third direction, the roller assembly 252 can pass through the clearance groove 221, thereby minimizing the distance between the clapper 22, the conveying roller 33, and the roller assembly 252. This allows the clapper 22 to stably drive the workpiece to be conveyed on the roller assembly 252 to move along the third direction.

[0044] Another embodiment of this utility model provides an automatic PCB inspection device, including an inspection device (not shown in the figure) and the aforementioned positioning and conveying device. The positioning and conveying device is used to position the PCB board and convey it to the inspection device, which is used to inspect the PCB board. It is understood that the component to be conveyed is a PCB, and the inspection device includes, but is not limited to, a camera, a barcode scanner, etc., and can inspect the PCB board on the conveying mechanism.

[0045] Specifically, after the conveying mechanism 3 conveys the PCB to above the roller assembly 25 along the first direction, the lifting drive assembly 24 drives the roller assembly 25 to move upward along the second direction, allowing the roller assembly 25 to push away the PCB from the conveying mechanism 3. The aligning assembly 20 then moves the PCB along the third direction on the roller assembly 25, thus completing the positioning function of the PCB on the roller assembly 25. The lifting drive assembly 24 then drives the roller assembly 25 downward along the second direction, transferring the PCB from the roller assembly 25 to the conveying mechanism 3. The conveying mechanism 3 then conveys the PCB to the inspection station along the first direction, where the inspection device photographs the PCB from above to complete the PCB inspection. In this invention, during the process of the aligning assembly 20 moving the PCB on the roller assembly 25, the PCB and the roller assembly 25 experience rolling friction, reducing the frictional force between them and ensuring the quality of the PCB.

[0046] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A positioning and conveying device, characterized in that, It includes a support base, a positioning mechanism, and a conveying mechanism. The conveying mechanism is mounted on the support base and is used to move the item to be conveyed along a first direction. The conveying mechanism is provided with a plurality of first through holes spaced apart along the first direction. The positioning mechanism includes a aligning component, a lifting drive component, and a plurality of roller assemblies spaced apart along a first direction; each roller assembly is correspondingly disposed in each of the first through holes, and both the aligning component and the lifting drive component are mounted on the support base; the lifting drive component is connected to the roller assembly and is used to drive the roller assembly to move along a second direction in the first through hole, so that the part to be transported is transferred between the conveying mechanism and the roller assembly; the aligning component is used to drive the part to be transported to move along a third direction to position the part to be transported; wherein, the first direction, the second direction, and the third direction intersect each other.

2. The positioning and conveying device according to claim 1, characterized in that, The alignment assembly includes a clapping plate, an alignment drive component, and a positioning plate, all mounted on the support base. The alignment drive component is connected to the clapping plate and is used to drive the clapping plate to move the part to be conveyed on the roller assembly along a third direction and abut against the positioning plate.

3. The positioning and conveying device according to claim 1, characterized in that, The positioning mechanism further includes a base, and the roller assembly includes a support frame and a plurality of roller components. All the support frames are spaced apart on the base along the first direction, and each support frame is equipped with a plurality of roller components spaced apart along the third direction. The lifting drive assembly is connected to the base, and the lifting drive assembly is used to drive the roller components to move along the third direction in the first through hole through the base and the support frame.

4. The positioning and conveying device according to claim 3, characterized in that, The positioning and conveying device also includes multiple baffles, which are installed on the support base and located in the first through hole; the baffles are used to block the first through hole.

5. The positioning and conveying device according to claim 4, characterized in that, The baffle is provided with a plurality of second through holes spaced apart along the third direction; the support frame is provided with a plurality of support arms spaced apart along the third direction at one end away from the base, and at least one roller is rotatably mounted on each support arm, and the support arms are slidably inserted into the second through holes one by one.

6. The positioning and conveying device according to claim 3, characterized in that, The positioning mechanism further includes a guide installed between the support and the base, the guide being used to guide the movement of the base as it moves in the second direction.

7. The positioning and conveying device according to claim 2, characterized in that, The alignment drive component includes an alignment motor, a first pulley, a second pulley, and a first transmission belt wound between the first pulley and the second pulley. The first pulley and the second pulley are rotatably mounted on the support base at intervals along a third direction. The alignment motor is mounted on the support base and connected to the first pulley. The clapper is connected to the first transmission belt.

8. The positioning and conveying device according to claim 1, characterized in that, The conveying mechanism includes a conveying drive assembly and a plurality of conveying rollers spaced apart on the support base along a first direction; the conveying drive assembly is mounted on the support base and connected to the conveying rollers, and is used to drive the conveying rollers to move the workpiece to be conveyed along the first direction; the first through hole is disposed between two adjacent conveying rollers.

9. The positioning and conveying device according to claim 8, characterized in that, The conveying drive assembly includes a conveying motor, a third pulley, a fourth pulley, a second transmission belt, a third transmission belt, and a plurality of fifth pulleys that are installed one-to-one on the conveying rollers; the conveying motor is mounted on the support base and connected to the third pulley, the fourth pulley is mounted on one of the conveying rollers, the second transmission belt is wound around the third pulley and the fourth pulley, and the third transmission belt is wound around all the fifth pulleys.

10. The positioning and conveying device according to claim 2, characterized in that, The positioning mechanism also includes a support member, one end of which is connected to the lifting drive assembly, and the other end of which passes through the first through hole and is connected to the clapper.

11. The positioning and conveying device according to claim 2, characterized in that, The clapper is provided with a clearance groove for the roller assembly to pass through.

12. An automatic PCB inspection device, characterized in that, The device includes a detection apparatus and a positioning and conveying device as described in any one of claims 1 to 11, wherein the positioning and conveying device is used to position the PCB board and convey the PCB board to the detection apparatus, and the detection apparatus is used to detect the PCB board.

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