A code scanning device for a PCB substrate

Abstract

This application provides a barcode scanning device for PCB substrates. A material conveying mechanism transports the PCB substrate to the barcode scanning station. The barcode scanning mechanism is located at the bottom of the material conveying mechanism and can scan the QR code on the bottom of the PCB substrate to match the PCB substrate with the information, ensuring that production can proceed normally. In addition, in the automated production process, the QR code can be quickly obtained and the PCB substrate can be matched with information, thus speeding up the production process.

Description

Technical Field

[0001] This application relates to the field of PCB manufacturing equipment technology, and in particular to a barcode scanning device for PCB substrates. Background Technology

[0002] A PCB substrate, also known as a printed circuit board or printed circuit board, uses an insulating board as its base material, cut to a specific size. It has at least one conductive pattern and holes, serving as a replacement for the traditional chassis of electronic components and enabling interconnection between them. During manufacturing, a code is typically printed on the top of the PCB substrate; this code is scanned to store information.

[0003] The information code on the existing PCB board is set on one side. After the PCB board is completed, the side with the QR code is always facing down, which makes it impossible to scan the QR code and prevents subsequent information matching processing, thus affecting the normal production process. Utility Model Content

[0004] The technical problem this application aims to solve is that the information code on existing PCB boards is set on one side, and after the PCB board is completed, the side with the QR code is always facing downwards, making it impossible to scan the QR code, which prevents subsequent information matching processing and affects the normal production process.

[0005] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this application provides a barcode scanning device for PCB substrates.

[0006] This utility model discloses a barcode scanning device for PCB substrates, which includes a material picking mechanism, a material conveying mechanism, and a barcode scanning mechanism, wherein the material picking mechanism and the barcode scanning mechanism are respectively disposed above and below the material conveying mechanism. The material conveying mechanism conveys PCB substrates. A suction station and a barcode scanning station are provided in the middle of the material conveying mechanism. The suction station is located at the feeding end of the material conveying mechanism, and the barcode scanning station is located in the conveying direction of the material conveying mechanism. In the material conveying direction, the barcode scanning station is located behind the suction station. The barcode scanning mechanism performs barcode scanning on the PCB substrate at the barcode scanning station.

[0007] Preferably, the device includes a housing, inside which a base and a support wall are provided. The support wall is perpendicular to the base. The barcode scanning mechanism and the material conveying mechanism are disposed on the base, and the material suction mechanism is fixed on the support wall. An opening is provided on the base, the position of which corresponds to the scanning station position, and the scanning mechanism is located at the opening.

[0008] Preferably, the material suction mechanism includes a suction component, a transmission component, and a lifting component; The suction component is connected to the lifting component, the lifting component is connected to the conduction component, and the conduction component drives the suction component to move.

[0009] Preferably, the material conveying mechanism includes a first conveying guide rail, a second conveying guide rail, and a third conveying guide rail, which are arranged sequentially.

[0010] Preferably, the material conveying mechanism includes two first adjustment components and a second adjustment component. The adjustment components are respectively connected to the first conveying guide rail and the third conveying guide rail, and the second adjustment component is connected to the second conveying guide rail.

[0011] Preferably, the first adjustment assembly includes a handwheel, a first lead screw, and a first rotating block; The handwheel is connected to the first lead screw, and the first lead screw is rotatably connected to the first rotating block; The first rotating block is connected to the first conveying guide rail, the second conveying guide rail, and the third conveying guide rail, respectively.

[0012] Preferably, the second pitch adjustment assembly includes a pitch adjustment motor, a pitch adjustment gear set, a second lead screw, and a second rotating block; The adjustable pitch motor is connected to the adjustable pitch gear set, and the second lead screw is connected to the second rotating block and the second lead screw respectively; The second rotating block is connected to the first conveying guide rail, the second conveying guide rail, and the third conveying guide rail, respectively.

[0013] Preferably, the material conveying mechanism includes multiple moving components, which are respectively connected to the first conveying guide rail, the second conveying guide rail, and the third conveying guide rail; The moving component includes a moving block and a moving guide rail, and the moving guide rail is fixedly connected to the base.

[0014] Preferably, the scanning mechanism includes a supplementary lighting component and a scanning camera; The supplementary lighting assembly includes a supplementary light and a rotating bracket. The supplementary light shines towards the PCB substrate, and the rotating bracket is located at both ends of the supplementary light.

[0015] Preferably, it includes an incoming material positioning mechanism, which is fixed inside the box and disposed at the inlet end of the material conveying mechanism. The incoming material positioning mechanism detects the incoming product status on the material conveying mechanism.

[0016] The technical solution provided in this application has the following advantages compared with the prior art: This application provides a barcode scanning device for PCB substrates. A material conveying mechanism transports the PCB substrate to the barcode scanning station. The barcode scanning mechanism is located at the bottom of the material conveying mechanism and can scan the QR code on the bottom of the PCB substrate to match the PCB substrate with the information, ensuring that production can proceed normally. In addition, in the automated production process, the QR code can be quickly obtained and the PCB substrate can be matched with information, thus speeding up the production process. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of the barcode scanning device for PCB substrate provided in this application; Figure 2 A diagram illustrating the usage status of the barcode scanning device for a PCB substrate provided in this application; Figure 3 A schematic diagram of the structure of the barcode scanning device for PCB substrates provided in this application, without the housing. Figure 1 ; Figure 4 A schematic diagram of the connection structure of the material picking mechanism and the material positioning mechanism of the barcode scanning device for PCB substrate provided in this application; Figure 5 An exploded view of the material picking mechanism and the incoming material positioning mechanism of the barcode scanning device for PCB substrate provided in this application; Figure 6 Schematic diagram of the material conveying mechanism and the connection structure of the scanning mechanism of the barcode scanning device for PCB substrate provided in this application. Figure 1 ; Figure 7 Schematic diagram of the material conveying mechanism and the connection structure of the scanning mechanism of the barcode scanning device for PCB substrate provided in this application. Figure 2 ; Figure 8 for Figure 7 Enlarged view of point P in the middle; Figure 9 A diagram showing the usage status of the material conveying mechanism and the scanning mechanism of the barcode scanning device for PCB substrates provided in this application; Figure 10 Schematic diagram of the material conveying mechanism of the barcode scanning device for PCB substrate provided in this application Figure 1 ; Figure 11 Schematic diagram of the material conveying mechanism of the barcode scanning device for PCB substrate provided in this application Figure 2 .

[0020] Explanation of reference numerals in the attached figures: 1. A barcode scanning device for PCB substrates; 11. Material suction mechanism; 111. Suction assembly; 1111. Suction head; 1112. Pipe; 1113. Suction head holder; 112. Conducting assembly; 1121. Linear guide rail; 1122. Moving frame; 113. Lifting assembly; 1131. Lifting block; 1132. Lifting motor; 12. Material conveying mechanism; 121. Absorption station; 122. QR code scanning station; 123. First conveyor rail; 124. Second transmission guide rail; 125. Third transmission guide rail; 126. First pitch adjustment component; 1261. Handwheel; 1262. First lead screw; 1263. First rotating block; 1264. Limiting assembly; 127. Second pitch adjustment component; 1271. Adjustable pitch motor; 1272. Adjustable pitch gear set; 1273. Second lead screw; 1274. Second rotating block; 128. Mobile components; 129. Lifting assembly; 13. QR code scanning organizations; 131. Fill light assembly; 1311. Fixture; 1312. Fill light; 1313. Rotating bracket; 132. QR code scanning camera; 14. Material positioning mechanism; 141. Positioning the camera; 142. Installing the bracket; 15. Box body; 151. Base; 1511. Opening; 152. Supporting wall. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. 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.

[0022] See Figure 1-11 This utility model discloses a barcode scanning device 1 for PCB substrates, which is used to scan and match information on PCB substrates. The PCB substrates are processed through a tray loading and input device, wherein multiple PCB substrates can be placed in the tray simultaneously. The device includes a housing 15, a material picking mechanism 11, a material conveying mechanism 12, a barcode scanning mechanism 13, and an incoming material positioning mechanism 14. The material picking mechanism 11 and the barcode scanning mechanism 13 are respectively arranged above and below the material conveying mechanism 12. The incoming material positioning mechanism 14 is fixed inside the housing 15 and is located at the inlet end of the material conveying mechanism 12. The incoming material positioning mechanism 14 detects the incoming material status on the material conveying mechanism 12.

[0023] Specifically, the material picking mechanism 11 is used to pick up the PCB substrate conveyed by the material conveying mechanism 12, the barcode scanning mechanism 13 is used to scan the PCB substrate, the material conveying mechanism 12 is used to convey the PCB substrate, and the incoming material positioning mechanism 14 is used to photograph the material loading and unloading situation on the material conveying mechanism 12 and whether the material has shifted on the material conveying mechanism 12. A base 151 and a support wall 152 are provided inside the housing 15. The support wall 152 is perpendicular to the base 151 and is part of the housing wall of the housing 15. The barcode scanning mechanism 13 and the material conveying mechanism 12 are mounted on the base 151, and the material picking mechanism 11 is fixed to the support wall 152. An opening 1511 is opened on the base 151, and the position of the opening 1511 corresponds to the position of the barcode scanning station 122. The barcode scanning mechanism 13 is located at the opening 1511. The material conveying mechanism 12 conveys the PCB substrate. The material conveying mechanism 12 is provided with a suction station 121 and a barcode scanning station 122 in the middle. The suction station 121 is located at the feeding end of the material conveying mechanism 12, and the barcode scanning station 122 is located in the conveying direction of the material conveying mechanism 12. In the material conveying direction, the barcode scanning station 122 is located behind the suction station 121. The barcode scanning mechanism 13 performs barcode scanning on the PCB substrate at the barcode scanning station 122.

[0024] In this process, the material, namely the PCB substrate, is loaded onto a tray by the host device and transported from the material conveying mechanism 12 to the suction station 121. The material suction mechanism 11 picks up the PCB substrate from the tray and moves it to the barcode scanning station 122. The barcode scanning mechanism 13 takes a picture of the PCB substrate at the barcode scanning station 122. At this time, the bottom of the PCB substrate is exposed, which is conducive to taking pictures of the information code (such as QR code, barcode, etc.) on the bottom. After the picture is taken, the material suction mechanism 11 puts the PCB substrate back onto the tray, and the material conveying mechanism 12 transports the photographed PCB substrate and the tray out of the device.

[0025] The material suction mechanism 11 includes a suction component 111, a transmission component 112, and a lifting component 113. The suction component 111 is connected to the lifting component 113, and the lifting component 113 is connected to the transmission component 112. The transmission component 112 drives the suction component 111 to move.

[0026] Specifically, the transmission component 112 is set with a linear guide rail 1121 and is fixed to the support wall 152. The transmission component 112 and the lifting component 113 can drive the suction component 111 to move, thereby improving the suction of materials. The transmission component 112 includes a linear guide rail 1121 and a moving frame 1122. The linear guide rail 1121 is connected to the moving frame 1122, and the linear guide rail 1121 provides driving force to the moving frame 1122, causing the moving frame 1122 to move along the linear guide rail 1121. The lifting component 113 includes a lifting block 1131, a lifting motor 1132, a lead screw, and a lifting transmission wheel. The lifting transmission wheel is connected to the lead screw and the lifting motor 1132 respectively. The lifting motor 1132 provides driving force to the lead screw, causing the lifting block 1131 to move. The suction assembly 111 includes a suction head 1111, a pipe 1112, and a suction head mounting bracket 1113. The suction head mounting bracket 1113 is fixedly connected to the lifting block 1131. The pipe 1112 and the suction head 1111 are mounted on the suction head mounting bracket 1113. The pipe 1112 is connected to the suction head 1111, and the other end of the pipe 1112 is connected to a suction mechanism. The suction mechanism can perform suction to allow the suction head 1111 to pick up the PCB substrate.

[0027] The material conveying mechanism 12 includes a first conveying guide rail 123, a second conveying guide rail 124, a third conveying guide rail 125, two first adjusting components 126, a second adjusting component 127, and multiple moving components 128. The first conveying guide rail 123, the second conveying guide rail 124, and the third conveying guide rail 125 are arranged sequentially. The first adjusting components 126 are respectively connected to the first conveying guide rail 123 and the third conveying guide rail 125. The second adjusting components 127 are connected to the second conveying guide rail 124. The moving components 128 are respectively connected to the first conveying guide rail 123, the second conveying guide rail 124, and the third conveying guide rail 125. The first conveyor rail 123, the second conveyor rail 124, and the third conveyor rail 125 are each composed of two conveyor belts, two conveyor motors, and a set of conveyor wheels. The conveyor motors are connected to the conveyor wheel sets and provide driving force to the conveyor wheel sets. The conveyor wheel sets are connected to the conveyor belts for transmission. The first conveyor rail 123, the second conveyor rail 124, and the third conveyor rail 125 provide driving force for the pallet and the PCB board loaded on the pallet. The moving component 128 includes a moving block and a moving guide rail. The moving guide rail is fixedly connected to the base 151 and is respectively connected to the first conveyor rail 123, the second conveyor rail 124, and the third conveyor rail 125. A support member is provided below the first conveyor rail 123, the second conveyor rail 124, and the third conveyor rail 125. The support member is fixedly connected to the moving block. The moving block can move along the direction set by the moving guide rail. The direction set by the moving guide rail is perpendicular to the material conveying direction. The conveyor belts on the three conveyor rails can move along the moving guide rails. Materials are transported via the first conveyor rail 123, the second conveyor rail 124, and the third conveyor rail 125 (e.g., Figure 9In the direction of A), the widths of the first conveyor rail 123, the second conveyor rail 124, and the third conveyor rail 125 can be adjusted to allow pallets of different widths to be loaded. The distance between the conveyor belts on the three conveyor rails is adjusted according to the movement of the first and second adjusting components 126 and 127. Specifically, the first adjusting component 126 includes a handwheel 1261, a first lead screw 1262, and a first rotating block 1263. The handwheel 1261 is connected to the first lead screw 1262, the first lead screw 1262 is rotatably connected to the first rotating block 1263, and the first rotating block 1263 is connected to the first conveyor rail 123, the second conveyor rail 124, and the third conveyor rail 125 respectively. Specifically, the first pitch adjustment assembly 126 can move the two conveyor belts within the first conveyor rail 123 and the third conveyor rail 125 closer or further apart. Rotating the handwheel 1261 can drive the first lead screw 1262 to rotate relative to the first rotating block 1263. The first rotating block 1263 connects the two conveyor belts, allowing them to move closer or further apart. Two first rotating blocks 1263 are provided, and the threads within the first rotating block 1263 match the threads on the lead screw. The second pitch adjustment assembly 127 includes a pitch adjustment motor 1271, a pitch adjustment gear set 1272, a second lead screw 1273, and a second rotating block 1274. The pitch adjustment motor 1271 is connected to the pitch adjustment gear set 1272. The second lead screw 1273 is connected to both the second rotating block 1274 and the second lead screw 1273. The second rotating block 1274 is connected to the first conveyor rail 123, the second conveyor rail 124, and the third conveyor rail 125. Specifically, the first pitch adjustment component 126 can make the two conveyor belts in the second conveyor guide rail 124 move closer or further apart. Turning the handwheel 1261 can drive the second lead screw 1273 to rotate relative to the second rotating block 1274. The second rotating block 1274 connects the two conveyor belts, allowing the two conveyor belts to move closer or further apart. There are two second rotating blocks 1274, and the threads in the second rotating block 1274 match the threads on the lead screw.

[0028] Specifically, a limit component 1264 is provided on the handwheel 1261. After the handwheel 1261 has rotated to a certain extent, the limit component 1264 can stop the handwheel 1261 from continuing to rotate, so that the three transmission guide rails can avoid continuous movement and stop moving at the position where the handwheel 1261 stops, maintaining the corresponding position.

[0029] Any of the following mechanisms can be used: mechanical braking mechanism, pin / slot locking mechanism, self-locking transmission mechanism, or damper mechanism. In this embodiment, a locking mechanism is used, but the limiting component 1264 is not limited to the locking mechanism used in this embodiment. The corresponding mechanism can be used according to the actual situation to avoid the continuous movement of the handwheel 1261 when no one is operating it.

[0030] In addition, the material conveying mechanism 12 includes a lifting assembly 129, which is located between the two conveyor belts of the first conveyor guide rail 123. The lifting assembly 129 is used to lift the pallet. The lifting assembly 129 includes a lifting plate and a lifting motor, which is connected to the lifting plate and provides driving force to the lifting plate. The lifting plate has openings that match positioning posts on the pallet. When the positioning posts are inserted into the openings, a positioning function is achieved, allowing the pallet to be installed in the corresponding position for conveying.

[0031] As one embodiment, the material conveying mechanism 12 includes a detection component. The detection component uses an infrared sensor and is set at the start and end positions of three conveying rails. The detection component is used to detect whether the material has been conveyed to the corresponding position.

[0032] The scanning mechanism 13 includes a supplementary lighting component 131 and a scanning camera 132. The supplementary lighting component 131 includes a fixing member 1311, a supplementary light 1312, and a rotating bracket 1313. The supplementary light 1312 illuminates the PCB substrate, and the rotating brackets 1313 are located at both ends of the supplementary light 1312. The supplementary light 1312 is elongated, with rotating brackets 1313 at each end. The rotating brackets 1313 have arc-shaped grooves. The fixing member 1311 passes through the arc-shaped grooves and connects to the rotating brackets 1313. The fixing member 1311 uses screws or other fasteners, allowing for adjustment of its tightness. By rotating the fixing member 1311, the supplementary light 1312 can be tightened or loosened, enabling detachable installation. The rotating bracket 1313 has graduations on its surface near the arc-shaped grooves to facilitate precise adjustment of the angle of the supplementary light 1312 by the operator. A barcode scanner 132 is mounted at an opening 1511 on a base 151, and is positioned below the base 151. A mounting bracket is provided on the base 151, and the camera 132 is fixedly connected to the base 151. The camera 132's shooting direction is towards the opening 1511 on the base 151 and towards the barcode scanning station 122. Two supplementary lights 1312 are provided, one near the first conveyor rail 123 and the other near the second conveyor rail 124. The shooting ranges of the two supplementary lights 1312 overlap, increasing the brightness of the image at the scanning station.

[0033] The incoming material positioning mechanism 14 includes two positioning cameras 141 and a mounting bracket 142. The positioning cameras 141 are fixedly connected to the mounting bracket 142. The positioning cameras 141 are set at the material feeding end of the material conveying mechanism 12. The positioning cameras 141 face the PCB substrate on the first conveying guide rail 123 to capture whether the PCB substrate jumps out of the tray and to determine whether there is incoming material. In addition, if there is a large number of incoming materials and the arrangement density is high, the shooting coverage is insufficient, resulting in some incoming materials not being captured. Setting two positioning cameras 141 can increase the shooting range and cover more incoming materials.

[0034] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0035] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0036] Furthermore, the terms "first" and "second" 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. Thus, a feature defined as "first" or "second" 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.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0040] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Since these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

[0041] The above description describes specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A barcode scanning device for PCB substrates, characterized in that, It includes a material picking mechanism, a material conveying mechanism, a barcode scanning mechanism, a box, and an incoming material positioning mechanism. The material picking mechanism and the barcode scanning mechanism are respectively located above and below the material conveying mechanism. The material conveying mechanism conveys the PCB substrate. The material conveying mechanism is provided with a suction station and a barcode scanning station in the middle. The suction station is located at the feeding end of the material conveying mechanism, and the barcode scanning station is located in the conveying direction of the material conveying mechanism. In the material conveying direction, the barcode scanning station is located behind the suction station. The barcode scanning mechanism performs barcode scanning on the PCB substrate at the barcode scanning station. The box is equipped with a base and a support wall, the support wall is perpendicular to the base, the barcode scanning mechanism and the material conveying mechanism are mounted on the base, and the material suction mechanism is fixed on the support wall; An opening is provided on the base, the position of which corresponds to the position of the barcode scanning station, and the barcode scanning mechanism is located at the opening; The material positioning mechanism is fixed inside the box and is located at the inlet end of the material conveying mechanism. The material positioning mechanism detects the material arrival status of the product on the material conveying mechanism.

2. The apparatus according to claim 1, characterized in that, The material suction mechanism includes a suction component, a transmission component, and a lifting component; The suction component is connected to the lifting component, the lifting component is connected to the conduction component, and the conduction component drives the suction component to move.

3. The apparatus according to claim 1, characterized in that, The material conveying mechanism includes a first conveying guide rail, a second conveying guide rail, and a third conveying guide rail, which are arranged sequentially.

4. The apparatus according to claim 3, characterized in that, The material conveying mechanism includes two first adjustment components and a second adjustment component. The adjustment components are respectively connected to the first conveying guide rail and the third conveying guide rail, and the second adjustment component is connected to the second conveying guide rail.

5. The apparatus according to claim 4, characterized in that, The first adjustment assembly includes a handwheel, a first lead screw, and a first rotating block; The handwheel is connected to the first lead screw, and the first lead screw is rotatably connected to the first rotating block; The first rotating block is connected to the first conveying guide rail, the second conveying guide rail, and the third conveying guide rail, respectively.

6. The apparatus according to claim 4, characterized in that, The second pitch adjustment assembly includes a pitch adjustment motor, a pitch adjustment gear set, a second lead screw, and a second rotating block; The adjustable pitch motor is connected to the adjustable pitch gear set, and the second lead screw is connected to the second rotating block and the second lead screw respectively; The second rotating block is connected to the first conveying guide rail, the second conveying guide rail, and the third conveying guide rail, respectively.

7. The apparatus according to claim 3, characterized in that, The material conveying mechanism includes multiple moving components, which are respectively connected to the first conveying guide rail, the second conveying guide rail, and the third conveying guide rail; The moving component includes a moving block and a moving guide rail, and the moving guide rail is fixedly connected to the base; Support members are installed below the first, second, and third conveying rails. The support members are fixedly connected to the moving block, which can move along the direction set by the moving rail. The direction set by the moving rail is perpendicular to the material conveying direction.

8. The apparatus according to claim 1, characterized in that, The scanning mechanism includes a supplementary lighting component and a scanning camera; The supplementary lighting assembly includes a supplementary light and a rotating bracket. The supplementary light shines towards the PCB substrate, and the rotating bracket is located at both ends of the supplementary light.

9. The apparatus according to claim 1, characterized in that, The material positioning mechanism includes two positioning cameras and a mounting bracket. The positioning cameras are fixedly connected to the mounting bracket. The positioning cameras are set at the material feeding end of the material conveying mechanism and face the PCB substrate on the first conveying guide rail. The positioning cameras take pictures of the PCB substrate.

10. The apparatus according to claim 1, characterized in that, The material conveying mechanism includes a lifting component and a detection component. The lifting component is located between the two conveyor belts of the first conveyor guide rail and is used to lift the pallet. The lifting assembly includes a lifting plate and a lifting motor. The lifting motor is connected to the lifting plate and provides driving force to the lifting plate. The detection component uses infrared sensors and is set at the start and end positions of the three conveyor rails. The detection component is used to detect whether the material has been conveyed to the corresponding position.

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