Circuit board conveying device

Abstract

The invention discloses a circuit board conveying device, which relates to the technical field of circuit board production related equipment and comprises a board taking unit, a paper feeding unit and a collecting and conveying unit. The board taking unit comprises an L-shaped baffle, n vertical paper grooves are formed in the transverse portion of the L-shaped baffle and used for separating n + 1 vertically-arranged circuit boards, a transverse frame is arranged at the sliding end of the second linear mechanism, and n clamping mechanisms are arranged on one side face of the transverse frame and used for dragging paperboards which penetrate out of the vertical paper grooves and are conveyed upwards. The output end of the third linear mechanism is provided with a pressing plate used for pressing the circuit boards and the paperboards. The paper feeding unit is arranged below the board taking unit and used for transferring the paperboards to the position above the transverse portion of the L-shaped baffle. The collecting and conveying unit is arranged on one side of the paper feeding unit and comprises a conveying belt conveyor, a plurality of collecting boxes are arranged on the conveying belt conveyor, a sliding way is arranged above the conveying belt conveyor, and a plurality of gaskets are arranged in the sliding way. According to the device, the circuit board can be automatically obtained from the tail end of the copper deposition wire of the circuit board, is automatically arranged and stored, and then is automatically conveyed.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment related to circuit board production, and in particular to a circuit board conveying device. Background Art

[0002] Circuit board production usually involves many processes, including pressing, drilling, copper deposition, pattern transfer, electroplating, testing, etc. Each process also includes multiple process steps. The copper deposition process includes micro-etching, pre-preg, activation, chemical copper deposition, drying and other steps.

[0003] In the copper deposition process, the circuit board is usually transferred by a small crane, and in a common drying method, the circuit board is finally hung under the crane and directly dried by hot air. Fig.12 The lifting part 4 shown has a plurality of groups of clips 41 disposed at the lower end thereof, and each group of clips 41 is used to clamp a circuit board 5 .

[0004] In the prior art, after the entire copper plating process is completed, it is necessary to manually open each group of clips 41, remove the circuit board 5, and then put the circuit board 5 into a box or material frame and other tools, and then transfer it by a cart. In addition, in order to avoid friction and scratches between the two circuit boards 5, which may cause damage, it is usually necessary to use spacers to manually separate the circuit boards 5, generally using paper. In addition, after copper plating, a graphic transfer process is usually required, and the circuit board 5 generally needs to be placed horizontally, so it is also necessary to manually flip it before transfer. Therefore, after copper plating is completed, there are many manual processing steps in the process of obtaining the circuit board and transporting it, and the degree of automation is low. Summary of the invention

[0005] In view of the above-mentioned defects, the present invention provides a circuit board conveying device, which can automatically obtain the circuit board from the end of the copper plating line of the circuit board, automatically organize and store it, and then automatically convey it.

[0006] In order to achieve the purpose of the present invention, the following technologies are proposed: A circuit board conveying device, comprising: The board taking unit comprises a first linear mechanism, an output end of which is provided with a first rotary motor, an output shaft end of the first rotary motor is provided with an L-shaped baffle, a horizontal portion of the L-shaped baffle is provided with n vertical paper slots for separating n+1 vertically placed circuit boards, a second linear mechanism is vertically provided on both sides of the vertical portion of the L-shaped baffle, a horizontal frame is provided at a sliding end of the second linear mechanism, a side surface of the horizontal frame is provided with n clamping mechanisms for dragging paper boards passing through the vertical paper slots and conveyed upward, a second rotary motor is provided at one end of the horizontal portion of the L-shaped baffle, an output shaft end of the L-shaped baffle is provided with a third linear mechanism, and an output end of the third linear mechanism is provided with a pressing plate for pressing each circuit board and each paper board tightly; The paper feeding unit is arranged below the board taking unit and is used to transfer the paperboard through the vertical paper slot to the upper part of the horizontal part of the L-shaped baffle; The collecting and conveying unit is arranged on one side of the paper feeding unit, and includes a conveyor belt conveyor. The outer peripheral side of the belt body of the conveyor belt conveyor is formed with a circular convex portion in an array. When working, a plurality of collecting boxes are arranged on the conveyor belt conveyor. A slide is arranged above the conveyor belt conveyor. When working, a plurality of gaskets are arranged in the slide. A seventh linear mechanism is arranged above the lower end of the slide, and a plug plate is arranged at the lower end of the output shaft for limiting the gasket located at the bottom.

[0007] Furthermore, a first rotating plate is provided at one end of the output shaft of the first rotating motor, and an L-shaped baffle is provided at one end of the first rotating plate.

[0008] Furthermore, a hanger is provided at one end of the horizontal portion of the L-shaped baffle, and the second rotating motor is provided at the lower end of the hanger.

[0009] Furthermore, a second rotating plate is provided at one end of the output shaft of the second rotating motor, a bracket is provided at the upper end of the second rotating plate, and the third linear mechanism is provided at the upper end of the bracket.

[0010] Furthermore, an upper end surface and one side end surface of the collecting box are both provided with openings, and a movable plate is installed at the opening of the side end surface of the collecting box.

[0011] Furthermore, a T-frame is provided on one side of the conveyor belt conveyor, an inclined plate is provided at one end of the horizontal portion of the T-frame, and a connecting plate is provided at the other end, a slide is provided at one end of the inclined plate, and a seventh linear mechanism is provided at one end of the connecting plate.

[0012] Furthermore, both ends of the gasket are respectively provided with square openings facing inwards.

[0013] Further, the paper feeding unit includes a storage rack for storing cardboard, the upper end face and one side end face of the storage rack are both provided with openings, the other side end face of the storage rack is vertically provided with a fourth linear mechanism, the lower end of the output shaft of the storage rack is provided with a connecting plate, one end of the connecting plate is provided with a limiting plate, the inner side surface of the limiting plate abuts against one side end face of the storage rack, a fifth linear mechanism is provided below one end of the storage rack, a sixth linear mechanism is vertically provided at the output end of the storage rack, a third rotating motor is provided at the upper end of the output shaft of the sixth linear mechanism, a U-shaped groove is provided at one end of the output shaft of the third rotating motor, a plurality of fourth rotating motors are respectively provided on two inner sides of the U-shaped groove, a first conveying wheel is provided at one end of the output shaft of the fourth rotating motor, for conveying the cardboard against the inner bottom wall of the U-shaped groove, an inner frame is also provided at one end of the two inner sides of the U-shaped groove, a fifth rotating motor is provided at one end of the inner frame, and a second conveying wheel is provided at one end of the output shaft of the fifth rotating motor, for conveying the cardboard at the top of the storage rack into the U-shaped groove.

[0014] Furthermore, a third rotating plate is provided at one end of the output shaft of the third rotating motor, and a U-shaped groove is provided at the upper end of the third rotating plate.

[0015] The beneficial effects of this technical solution are: 1. The circuit board conveying device of the present application can quickly obtain, flip and convey the circuit boards that have completed the copper plating process, and can replace most of the manual operations, including placing cardboards between circuit boards, unloading circuit boards, flipping circuit boards and cardboards, and storing circuit boards. These steps are all completed automatically. The staff only needs to complete the work of placing cardboards in batches in the storage rack, preparing gaskets in advance, and placing collection boxes at long intervals. These actions can be performed at long intervals, thereby greatly improving the level of automation.

[0016] 2. It can automatically place cardboard between circuit boards and automatically place gaskets between each group of circuit boards in the collection box to better protect the circuit boards and improve product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 An overall stereogram of an embodiment of the present application is shown.

[0018] Figure 2 A three-dimensional diagram of a plate taking unit according to an embodiment of the present application is shown.

[0019] Figure 3 The present invention shows a partial view of the plate taking unit in the embodiment of the present invention. Figure 1 .

[0020] Figure 4 A three-dimensional diagram of a paper feeding unit according to an embodiment of the present application is shown.

[0021] Figure 5 The paper feeding unit of the embodiment of the present application is shown in an exploded view. Figure 1 .

[0022] Figure 6 The paper feeding unit of the present invention is shown in FIG. Figure 2 .

[0023] Figure 7 The paper feeding unit of the present invention is shown in FIG. Figure 3 .

[0024] Figure 8 A stereoscopic view of a collecting and conveying unit according to an embodiment of the present application is shown.

[0025] Fig. 9 The collecting and conveying unit of the embodiment of the present application is shown in FIG. Figure 1 .

[0026] Fig.10 The exploded view of the collecting and conveying unit in the embodiment of the present application is shown. Figure 2 .

[0027] Fig.11The collecting and conveying unit of the embodiment of the present application is shown in FIG. Figure 3 .

[0028] Fig.12 A partial schematic diagram of conveying a circuit board using a copper deposition process according to the background technology of the present application is shown.

[0029] Markings in the figure: plate taking unit 1, first linear mechanism 11, first bracket 111, inverted L-shaped frame 112, first rotating motor 12, first rotating plate 121, L-shaped baffle 13, vertical paper slot 131, side frame 132, hanger 133, second linear mechanism 14, horizontal frame 141, clamping mechanism 15, second rotating motor 16, second rotating plate 161, bracket 162, third linear mechanism 17, pressing plate 18, paper feeding unit 2, storage rack 21, second bracket 211, fourth linear mechanism 22, connecting plate 221, limiting plate 23, first inclined surface 231, fifth linear mechanism 24, third bracket 241, horizontal plate 242, first Six linear mechanisms 25, third rotating motor 251, third rotating plate 252, U-shaped groove 26, second inclined surface 261, inner frame 262, fourth rotating motor 27, first conveying wheel 271, fifth rotating motor 28, second conveying wheel 281, collecting and conveying unit 3, conveyor belt conveyor 31, fourth bracket 311, belt body 32, circular protrusion 33, collecting box 34, pin hole 341, movable plate 35, through hole 351, T-shaped frame 36, inclined plate 361, connecting plate 362, slideway 37, gasket 371, seventh linear mechanism 38, hanging plate 381, plug plate 39, lifting part 4, clip 41, circuit board 5, cardboard 6. DETAILED DESCRIPTION

[0030] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0031] like Figure 1 to Figure 11 The circuit board conveying device shown includes a board taking unit 1, a paper feeding unit 2, and a collecting and conveying unit 3.

[0032] like Figure 1~Figure 3As shown, the board taking unit 1 includes a first linear mechanism 11, a first bracket 111 is provided at the lower end of the first linear mechanism 11, an inverted L-shaped frame 112 is provided at the output end of the first linear mechanism 11, a first rotary motor 12 is provided on the inverted L-shaped frame 112, an output axis of the first rotary motor 12 is parallel to the output axis of the first linear mechanism 11, a first rotating plate 121 is provided at one end of the output shaft of the first rotary motor 12, an L-shaped baffle 13 is provided at one end of the first rotating plate 121, n vertical paper grooves 131 are provided on the horizontal part of the L-shaped baffle 13, which are used to separate n+1 vertically placed circuit boards 5, side frames 132 are provided on both sides of the vertical part of the L-shaped baffle 13, and a second linear mechanism 14 is vertically provided on the outer side of the side frame 132, and its sliding end A horizontal frame 141 is provided, and n clamping mechanisms 15 are provided on one side of the horizontal frame 141 for dragging the cardboard 6 passing through the vertical paper slot 131 and conveyed upward, and the width of the cardboard 6 is greater than the width of the circuit board 5. A hanger 133 is provided at one end of the horizontal portion of the L-shaped baffle 13, and a second rotating motor 16 is provided under the hanger 133, and a second rotating plate 161 is provided at one end of the output shaft thereof, and a bracket 162 is provided at the upper end of the second rotating plate 161, and a third linear mechanism 17 is provided at the upper end of the bracket 162, and a pressing plate 18 for pressing each circuit board 5 and each cardboard 6 is provided at its output end. Specifically, a rotating seat is also provided at one end of the horizontal portion of the L-shaped baffle 13, and a driven rod rotatably matched with the rotating seat is also provided on one side of the second rotating plate 161.

[0033] like Figure 1 , Figure 4~Figure 7As shown, the paper feeding unit 2 is arranged below the board taking unit 1, and is used for transferring the cardboard 6 to the upper part of the horizontal part of the L-shaped baffle 13 through the vertical paper slot 131. The paper feeding unit 2 includes a storage rack 21 for storing the cardboard 6. The upper end face and one side end face of the storage rack 21 are both provided with openings. A second bracket 211 is provided at the lower end of the storage rack 21, and a fourth linear mechanism 22 is vertically provided at the other side end face of the storage rack 21. A connecting plate 221 located below the storage rack 21 is provided at the lower end of the output shaft thereof, and a limiting plate 23 is provided at one end of the connecting plate 221. The inner side surface of the limiting plate 23 abuts against one side end face of the storage rack 21, and a first inclined surface 231 facing outward is provided at the upper end of the limiting plate 23. A fifth linear mechanism 24 is provided below one end of the storage rack 21, and a third bracket 241 is provided at the lower end thereof. A horizontal plate 242 is provided at the output end of the fifth linear mechanism 24, and a sixth linear mechanism 25 is vertically provided at one end of the horizontal plate 242. A third rotating electric motor is provided at the upper end of the output shaft thereof. The third rotating plate 252 is provided at one end of the output shaft of the third rotating motor 251, and a U-shaped groove 26 is provided at the upper end of the third rotating plate 252. A second inclined surface 261 cooperating with the first inclined surface 231 is provided at the bottom of one end of the U-shaped groove 26. A plurality of fourth rotating motors 27 are respectively provided on the two inner side surfaces of the U-shaped groove 26. A first conveying wheel 271 is provided on one end of the output shaft of the fourth rotating motor 27, which is used to abut the cardboard 6 against the inner bottom wall of the U-shaped groove 26 for conveying. An inner frame 262 is also provided on one end of the two inner side surfaces of the U-shaped groove 26, and a fifth rotating motor 28 is provided on one end of the inner frame 262. A second conveying wheel 281 is provided on one end of the output shaft of the fifth rotating motor 28, which is used to convey the cardboard 6 located at the top in the storage rack 21 into the U-shaped groove 26. When the U-shaped groove 26 is rotated to a vertical state, the cardboard 6 rises through the U-shaped groove 26, passes through the vertical paper groove 131 and reaches the upper part of the horizontal portion of the L-shaped baffle 13.

[0034] like Figure 1 , Figure 8~Figure 11As shown, the collecting and conveying unit 3 is arranged on one side of the paper feeding unit 2, including a conveyor belt conveyor 31, a fourth bracket 311 is arranged at the lower end thereof, and a circular convex portion 33 is formed in an array on the outer peripheral side of the belt body 32 of the conveyor belt conveyor 31. When working, a plurality of collecting boxes 34 for collecting circuit boards 5 are arranged on the conveyor belt conveyor 31, and each collecting box 34 is respectively limited to the inner side of each circular convex portion 33 to achieve positioning. The upper end face and one side end face of the collecting box 34 are both provided with openings, and the opening of the side end face of the collecting box 34 is equipped with a movable plate 35. Specifically, one end of the upper end face of the two parallel side walls of the collecting box 34 is respectively provided with a pin hole 341, and the two ends of the upper end of the movable plate 35 are respectively extended with an outer plate, and the outer plate is provided with a through hole 351 matching the pin hole 341. By connecting the through hole 351 and the pin hole 341 in sequence, the movable plate 35 is fixed to the opening position on one side of the collecting box 34. A T-frame 36 is provided on one side of the conveyor belt conveyor 31. An inclined plate 361 is provided at one end of the horizontal part of the T-frame 36, and a connecting plate 362 is provided at the other end. A slideway 37 located above the conveyor belt conveyor 31 is provided at one end of the inclined plate 361. When working, a plurality of gaskets 371 are provided in the slideway 37. Square openings are respectively opened inward at both ends of the gasket 371. A seventh linear mechanism 38 located above the lower end of the slideway 37 is vertically provided at one end of the connecting plate 362. A hanging plate 381 is provided at the lower end of the output shaft. A plug plate 39 is provided at one end of the hanging plate 381 for limiting the gasket 371 through the square opening of the gasket 371 located at the bottom.

[0035] In this embodiment, the first linear mechanism 11, the third linear mechanism 17, the fourth linear mechanism 22, the fifth linear mechanism 24, the sixth linear mechanism 25, and the seventh linear mechanism 38 all use single-axis linear cylinders, the second linear mechanism 14 uses a rodless linear cylinder, the clamping mechanism 15 uses an air clamp, and the gasket 371 is a thin sheet made of rubber.

[0036] Working method: First, multiple circuit boards 5 that have completed the copper plating process are transferred to the end of the copper plating production line by crane lifting. In order to complete this step, the third linear mechanism 17 must first be rotated by the second rotating motor 16 to make it in a vertical state to avoid blocking the circuit board 5. In this embodiment, the number of circuit boards 5 is five. After one side of the circuit board 5 at the end contacts the vertical part of the L-shaped baffle 13, each circuit board 5 stops moving. At this time, the bottom end of the circuit board 5 is slightly higher than the horizontal part of the L-shaped baffle 13. In this embodiment, it is 1 mm higher than the upper end surface of the horizontal part.

[0037] Then, the four cardboards 6 are transported to the space between the adjacent circuit boards 5 by the paper feeding unit 2. The specific operation is as follows: a plurality of cardboards 6 are placed in the storage rack 21 in advance, and then the highest point of the first inclined surface 231 of the limiting plate 23 is located at the height of the highest point of the second cardboard 6 from the top to the bottom in the storage rack 21 by the fourth linear mechanism 22, that is, the other cardboards 6 except the top cardboard 6 are limited to prevent the other cardboards 6 from being brought out; then, the position of the U-shaped groove 26 is adjusted by the fifth linear mechanism 24 and the sixth linear mechanism 25, so that the second conveying wheel 281 can extend into the inner side of the storage rack 21, and then the first conveying wheels 281 are controlled by the fourth rotary motor 27 and the fifth rotary motor 28. 71 and the second conveying wheel 281 transfer the cardboard 6 into the U-shaped groove 26, and then push it through the fifth linear mechanism 24, and then rotate the U-shaped groove 26 to vertical by the third rotating motor 251. At this time, the top of the cardboard 6 is aligned with a vertical paper groove 131, and then the cardboard 6 continues to pass through the vertical paper groove 131 through each first conveying wheel 271 to reach between two circuit boards 5, and then the horizontal frame 141 is moved to the lower part by each second linear mechanism 14, and a clamping mechanism 15 is started on both sides to clamp the transferred cardboard 6, and the cardboard 6 is not lifted at this time; and so on, the other three cardboards 6 are transferred to and clamped between other adjacent circuit boards 5, and the state at this time is as follows: Figure 1 As shown, four cardboards 6 are between two adjacent circuit boards 5 among the five circuit boards 5; the four cardboards 6 are clamped by a pair of clamping mechanisms 15 respectively, and then the two second linear mechanisms 14 lift each cross frame 141 so that the cardboards 6 can completely separate the adjacent circuit boards 5.

[0038] Next, a collection box 34 is placed in the round convex portion 33 closest to the board taking unit 1, and a plurality of gaskets 371 are pre-placed in the slideway 37. Then, the board taking unit 1 and the collecting and conveying unit 3 are used to store and convey a batch of five circuit boards 5. Specifically, the clamping of the circuit board 5 by the clamp 41 is first released, and then the third linear mechanism 17 is rotated by the second rotary motor 16 to make it in a horizontal state. Then, the pressing plate 18 is used by the third linear mechanism 17 to move the circuit boards separated by the paperboard 6. 5 are pressed together, and while pushing the pressing plate 18, each pair of clamping mechanisms 15 are released in turn to release the clamping of the side ends of the paperboard 6, and finally the clamping force between the pressing plate 18 and the vertical part of the L-shaped baffle 13 fixes each circuit board 5 and the paperboard 6; the output end is retracted by the first linear mechanism 11, and then the circuit boards 5 and the paperboard 6 are rotated by the first rotary motor 12, so that the vertical part of the L-shaped baffle 13 is turned over more than 90 degrees, and then the pressing of the pressing plate 18 is released, so that a batch of five circuit boards 5 slide into the collection box 34.

[0039] The seventh linear mechanism 38 controls the lifting and lowering of the inserting plate 39 so that a gasket 371 falls into the collecting box 34 and falls onto a batch of circuit boards 5 that have just been put in.

[0040] By analogy, multiple batches of circuit boards 5 are placed in a collection box 34, and each batch of circuit boards 5 is separated by a gasket 371 until the collection box 34 is full, and then the collection box 34 is moved by the conveyor belt conveyor 31. In the drawings of this embodiment, a shorter conveyor belt conveyor 31 is drawn for the convenience of representation. In actual use, a longer conveyor belt conveyor 31 can be used, on which more collection boxes 34 can be transported, and preferably the conveyor belt conveyor 31 can be extended to the loading point of the next production process of the circuit board 5.

[0041] After the collection box 34 reaches the next process, the movable plate 35 can be removed to conveniently take out the circuit board 5 from the side.

[0042] The above are only some of the embodiments listed in this application and are not intended to limit this application.

Claims

1. A circuit board conveying device, characterized in that: include: A board taking unit (1) comprises a first linear mechanism (11), an output end of which is provided with a first rotating motor (12), one end of the output shaft of the first rotating motor (12) is provided with an L-shaped baffle (13), a horizontal portion of the L-shaped baffle (13) is provided with n vertical paper slots (131) for separating n+1 vertically placed circuit boards (5), second linear mechanisms (14) are vertically provided on both sides of the vertical portion of the L-shaped baffle (13), a sliding end of the second linear mechanism (14) is provided with a horizontal frame (141), a side surface of the horizontal frame (141) is provided with n clamping mechanisms (15) for dragging paper boards (6) passing through the vertical paper slots (131) and conveying upward, a second rotating motor (16) is provided at one end of the horizontal portion of the L-shaped baffle (13), one end of the output shaft of the L-shaped baffle is provided with a third linear mechanism (17), and a pressing plate (18) for pressing each circuit board (5) and each paper board (6) is provided at the output end of the third linear mechanism (17); A paper feeding unit (2) is arranged below the board taking unit (1) and is used to transfer the paperboard (6) to the upper part of the horizontal portion of the L-shaped baffle (13) through the vertical paper slot (131); The collecting and conveying unit (3) is arranged on one side of the paper feeding unit (2), and comprises a conveyor belt (31). The outer peripheral side of the belt body (32) of the conveyor belt (31) is formed with a circular protrusion (33) in an array. When in operation, a plurality of collecting boxes (34) are arranged on the conveyor belt (31). A slideway (37) is arranged above the conveyor belt (31). When in operation, a plurality of gaskets (371) are arranged in the slideway (37). A seventh linear mechanism (38) is arranged above the lower end of the slideway (37), and a plug plate (39) is arranged at the lower end of the output shaft thereof for limiting the gasket (371) located at the bottom.

2. The circuit board conveying device according to claim 1, characterized in that: A first rotating plate (121) is provided at one end of the output shaft of the first rotating motor (12), and an L-shaped baffle (13) is provided at one end of the first rotating plate (121).

3. The circuit board conveying device according to claim 1, characterized in that: A hanger (133) is provided at one end of the transverse portion of the L-shaped baffle (13), and the second rotating motor (16) is provided at the lower end of the hanger (133).

4. The circuit board conveying device according to claim 1, characterized in that: A second rotating plate (161) is provided at one end of the output shaft of the second rotating motor (16), a bracket (162) is provided at the upper end of the second rotating plate (161), and a third linear mechanism (17) is provided at the upper end of the bracket (162).

5. The circuit board conveying device according to claim 1, characterized in that: The upper end surface and one side end surface of the collecting box (34) are both provided with openings, and the opening of the side end surface of the collecting box (34) is equipped with a movable plate (35).

6. The circuit board conveying device according to claim 1, characterized in that: A T-shaped frame (36) is provided on one side of the conveyor belt conveyor (31); an inclined plate (361) is provided at one end of the transverse portion of the T-shaped frame (36); a connecting plate (362) is provided at the other end; a slideway (37) is provided at one end of the inclined plate (361); and a seventh linear mechanism (38) is provided at one end of the connecting plate (362).

7. The circuit board conveying device according to claim 1, characterized in that: Both ends of the gasket (371) are respectively provided with square openings facing inwards.

8. The circuit board conveying device according to claim 1, characterized in that: The paper feeding unit (2) comprises a storage rack (21) for storing paperboards (6). The upper end surface and one side end surface of the storage rack (21) are both provided with openings. The other side end surface of the storage rack (21) is vertically provided with a fourth linear mechanism (22). The lower end of the output shaft of the storage rack (21) is provided with a connecting plate (221). One end of the connecting plate (221) is provided with a limiting plate (23). The inner side surface of the limiting plate (23) abuts against the side end surface of the storage rack (21). A fifth linear mechanism (24) is provided below one end of the storage rack (21). The output end of the storage rack (21) is vertically provided with a sixth linear mechanism (25). The upper end of the output shaft of the sixth linear mechanism (25) is provided with a third rotating motor (251). The third rotating motor (251) A U-shaped groove (26) is provided at one end of an output shaft of the storage rack (251), and a plurality of fourth rotating motors (27) are respectively provided on two inner side surfaces of the U-shaped groove (26). A first conveying wheel (271) is provided at one end of an output shaft of the fourth rotating motor (27) for conveying the cardboard (6) by contacting the cardboard (6) against the inner bottom wall of the U-shaped groove (26). Inner frames (262) are also provided at one end of two inner side surfaces of the U-shaped groove (26), and a fifth rotating motor (28) is provided at one end of the inner frame (262). A second conveying wheel (281) is provided at one end of an output shaft of the fifth rotating motor (28) for conveying the cardboard (6) located at the top in the storage rack (21) into the U-shaped groove (26).

9. The circuit board conveying device according to claim 8, characterized in that: A third rotating plate (252) is provided at one end of the output shaft of the third rotating motor (251), and a U-shaped groove (26) is provided at the upper end of the third rotating plate (252).

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