Conveying device for printed circuit board (PCB) printing

Abstract

The invention relates to the field of PCB (printed circuit board) processing and transportation, in particular to a conveying device for PCB printing, which comprises a transport vehicle, a feeding frame, a fixing frame and the like, a loading frame is placed on the transport vehicle; two fixing frames which are symmetrical left and right are arranged on the feeding frame. According to the PCB feeding device, the alignment plate is inserted into the feeding frame to achieve rapid alignment of PCBs, skewing of the PCBs caused by manual errors when the PCBs are inserted is avoided, meanwhile, all the PCBs on the storage plate can be inserted into the feeding frame only through one-time alignment, the PCB feeding efficiency is improved, the storage plate is horizontally placed and serves as a temporary storage rack of the PCBs, and the PCB feeding efficiency is improved. The finished PCBs are collected and stored through the storage plate, when semi-finished PCBs need to be used, only the storage plate needs to be inserted into the feeding frame, the semi-finished PCBs are prevented from being repeatedly inserted, abrasion of the edges of the PCBs is reduced, meanwhile, the workload of collecting and storing the PCBs is reduced, and the conveying efficiency of the PCBs is improved.

Description

Technical Field

[0001] The invention relates to the field of PCB board processing and transportation, and in particular to a conveying device used for PCB board printing. Background Art

[0002] During the processing and transportation of PCB boards, in order to reduce the intensity of manual work, an intelligent transport vehicle is used to transport the PCB boards, that is, the PCB boards are manually inserted into the loading frame at the PCB board storage location, and then the loading frame is placed on the intelligent transport vehicle. After the intelligent transport vehicle transports the loading frame to the designated location, the loading frame is transferred to the loading machine of the production line by the intelligent transport vehicle, thereby completing the transportation of the PCB boards. However, in the process of placing the PCB boards into the loading frame, since the loading frame accommodates a large number of PCB boards and the spacing between the PCB boards is small, it is easy to insert the PCB boards crookedly when manually inserting them, resulting in the PCB boards being placed at an angle in the loading frame. In addition, when manually inserting the PCB boards, the PCB boards need to be carefully aligned with the grooves in the loading frame, resulting in low efficiency in inserting and placing the PCB boards. Summary of the invention

[0003] In order to overcome the disadvantages that, in the process of manually inserting PCB boards into a loading frame, the loading frame can accommodate a large number of PCB boards and the spacing between the PCB boards is small, resulting in the PCB boards being placed obliquely in the loading frame, and the PCB boards need to be carefully aligned with the grooves in the loading frame when manually inserting the PCB boards, resulting in low efficiency in inserting and placing the PCB boards, the present invention provides a conveying device for PCB board printing.

[0004] The technical implementation scheme of the present invention is as follows: a conveying device for PCB board printing includes a transport vehicle, a loading frame and a fixing frame; the transport vehicle is provided with a loading frame; two left-right symmetrical fixing frames are arranged on the loading frame; a plurality of partitions are arranged on the opposite sides of the two fixing frames; a storage plate, an alignment plate, a clamping plate, a sliding plate, a locking block and a limit system are also included; a storage plate for fixing and storing PCB boards is plugged into the loading frame; a plurality of alignment plates are arranged on the side of the storage plate close to the loading frame; an alignment channel adapted to the alignment plate is provided on the loading frame; a plurality of storage slots are provided on the storage plate, and Each storage slot is configured to pass through the storage plate; a PCB board is placed in each storage slot; a clamping plate is installed on each storage slot; the distance between the bottoms of two adjacent storage slots is the same as the distance between the bottoms of two adjacent partitions; a sliding plate is slidably connected to the left and right sides of the storage plate; a number of connecting blocks are arranged on each sliding plate; each connecting block is fixedly connected to the adjacent clamping plates; two locking blocks are fixedly connected to the left and right sides of the storage plate that are symmetrical up and down; each sliding plate is slidably connected to two adjacent locking blocks; a limit system for limiting the insertion depth of the PCB board is installed on the storage plate.

[0005] More preferably, the length of the alignment plate is greater than the length of the PCB board.

[0006] More preferably, a plurality of alignment plates are arranged to surround the storage plate.

[0007] More preferably, the storage plate is provided with a plurality of grooves on the side away from the loading frame; and the positions of the grooves correspond one to one with those of the alignment plate.

[0008] More preferably, it also includes a limit roller, a connecting frame and a baffle; a connecting frame is installed on each fixed frame; each connecting frame is rotatably connected to a number of limit rollers for detecting the bending degree of the PCB board; each limit roller is located between two adjacent partitions; and a baffle is connected to the bottom of each storage slot through a torsion spring.

[0009] More preferably, the height of the receiving groove is set to be greater than the thickness of the finished PCB board.

[0010] More preferably, the surface of the limiting roller is made of rubber material.

[0011] More preferably, the connecting frame is configured to be movable up and down on the fixing frame, and the connecting frame and the fixing frame are fixed by adjusting bolts.

[0012] More preferably, the limiting system includes a fixed rod and a limiting block; two left-right symmetrical fixed rods are slidably connected to the storage plate; each fixed rod is rotatably connected to a number of limiting blocks via a torsion spring; each limiting block is located in an adjacent storage slot; and the fixing frame is configured to slide on the loading frame.

[0013] More preferably, each limit block is provided with an inclined surface; and the two inclined surfaces in the same storage slot are arranged symmetrically.

[0014] Compared with the prior art, the present invention has the following advantages: Compared with the conventional insertion method, the alignment plate is inserted into the loading frame to realize the rapid alignment of the PCB board, avoiding the skew of the PCB board caused by human error when inserting the PCB board. At the same time, all the PCB boards on the storage board can be inserted into the loading frame through only one alignment, which improves the efficiency of PCB board loading. By placing the storage board horizontally, it can be used as a temporary storage rack for PCB boards. The storage board is used to collect and store finished PCB boards. When semi-finished PCB boards are needed, the storage board only needs to be inserted into the loading frame to avoid repeated insertion and placement of semi-finished PCB boards, reduce the wear of the edges of the PCB boards, and reduce the workload of collecting and storing PCB boards, thereby improving the transportation efficiency of PCB boards. By setting the length of the alignment plate to be greater than the length of the PCB, the storage plate on the upper layer is placed on the alignment plate on the storage plate on the lower layer. When the storage plates are stacked, the PCB is prevented from being squeezed by the upper storage plate, thereby preventing the PCB from being deformed due to pressure, thereby improving the quality of the PCB. The groove of the upper storage plate is clamped on the alignment plate of the lower storage plate, thereby preventing the storage plates from being laterally displaced when stacked, thereby improving the safety of the stacking of the storage plates; The PCB board is limited by the limiting roller and the partition. During the process of inserting and placing the PCB board, the bending degree of the PCB board is detected simultaneously, thereby improving the yield rate of the PCB board. By setting the height of the storage slot to be greater than the thickness of the finished PCB board, it is avoided that the electronic components on the PCB board are scratched and damaged by the clamping plate when the PCB board is manually pulled out. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the conveying device for PCB board printing of the present invention; Figure 2 It is a schematic diagram of the combined three-dimensional structure of the feeding frame and the fixing frame of the present invention, wherein the feeding frame is processed in section; Figure 3 For the present invention Figure 2 A magnified image of point A; Figure 4 It is a schematic diagram of the three-dimensional structure of the storage plate, the alignment plate and the clamping plate combination of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the combination of the clamping plate, the sliding plate and the locking block of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the storage plate, the clamping plate and the baffle assembly of the present invention; Figure 7 This is a diagram of the storage board of the present invention in a horizontal placement state; Figure 8 It is a schematic diagram of the combined three-dimensional structure of the fixing rod and the limiting block of the present invention; Fig. 9 It is a partial three-dimensional structural schematic diagram of the limiting system of the present invention.

[0016] The markings of the components in the accompanying drawings are as follows: 1-transport vehicle, 2-loading frame, 3-fixed frame, 3001-partition, 4-storage plate, 4001-storage slot, 4002-groove, 5-alignment plate, 6-clamp, 7-PCB board, 8-sliding plate, 8001-connecting block, 9-locking block, 201-limiting roller, 202-connecting frame, 203-baffle, 301-fixed rod, 302-limiting block, 30201-inclined surface. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Example 1 like Figure 1-Figure 7 As shown, a conveying device for PCB board printing includes a transport vehicle 1, a loading frame 2 and a fixing frame 3; the transport vehicle 1 is placed with the loading frame 2; two left-right symmetrical fixing frames 3 are arranged on the loading frame 2; and a plurality of partitions 3001 are arranged on the opposite sides of the two fixing frames 3; It also includes a storage plate 4, an alignment plate 5, a clamping plate 6, a sliding plate 8, a locking block 9 and a limit system; the storage plate 4 is plugged into the feeding frame 2; four alignment plates 5 are arranged on the storage plate 4 near the feeding frame 2; an alignment channel adapted to the alignment plate 5 is provided on the feeding frame 2; a plurality of storage slots 4001 are provided on the storage plate 4, and each storage slot 4001 is arranged to pass through the storage plate 4; a PCB board 7 is placed in each storage slot 4001; a The storage plate 4 is provided with a plurality of connecting blocks 8001, each of which is fixedly connected to the adjacent clamping plate 6; the storage plate 4 is provided with two upper and lower symmetrical locking blocks 9, each of which is fixedly connected to the left and right sides; each of the sliding plates 8 is slidably connected to the adjacent clamping plates 6; the storage plate 4 is provided with two upper and lower symmetrical locking blocks 9, each of which is slidably connected to the adjacent locking blocks 9; a limiting system is installed on the storage plate 4.

[0019] Furthermore, in order to prevent the PCB board 7 from being deformed due to external force when stored and to improve the quality of the PCB board 7 , the length of the alignment plate 5 is greater than the length of the PCB board 7 .

[0020] Furthermore, in order to improve the safety of taking the storage plate 4 , four alignment plates 5 are arranged to surround the storage plate 4 .

[0021] Furthermore, in order to improve the safety of stacking the storage plates 4 , four grooves 4002 are provided on the side of the storage plates 4 away from the loading frame 2 ; the grooves 4002 correspond to the positions of the alignment plates 5 one by one.

[0022] It also includes a limiting roller 201, a connecting frame 202 and a baffle 203; a connecting frame 202 is installed on each fixed frame 3; each connecting frame 202 is rotatably connected to a plurality of limiting rollers 201; each limiting roller 201 is located between two adjacent partitions 3001; and a baffle 203 is connected to the bottom of each storage slot 4001 through a torsion spring.

[0023] Furthermore, in order to avoid damage to the electronic components on the upper surface of the PCB board 7, the height of the storage groove 4001 is set to be greater than the finished thickness of the PCB board 7.

[0024] Furthermore, in order to improve the effect of the bending detection of the PCB board 7, the surface of the limiting roller 201 is configured to be made of rubber material.

[0025] Furthermore, in order to improve the adaptability to different thicknesses of PCB boards 7, the connecting frame 202 is configured to be movable up and down on the fixing frame 3, and the connecting frame 202 and the fixing frame 3 are fixed by adjusting bolts.

[0026] The following describes in detail the process of using the intelligent transport vehicle to transport the PCB board 7: Before conveying the PCB board 7, Figure 7 As shown, first place the storage plate 4 horizontally and make the alignment plate 5 vertically facing upward, then manually insert the lower edge of the PCB board 7 into the gap between the storage slot 4001 and the clamping plate 6 in turn, and take the viewing angle shown in the figure as a reference, by pulling the two sliding plates 8 in the front and rear directions to move to the left, drive the connecting block 8001 to move to the left, thereby drive all the clamping plates 6 to move to the left, so that the clamping plates 6 and the PCB board 7 are fitted, and then the locking block 9 on the left is screwed and locked, thereby limiting the sliding plate 8 from sliding on the storage plate 4, and then through the storage slot 4 001 and the clamping plate 6 clamp the PCB board 7, so that the PCB board 7 is fixed on the storage plate 4. In this process, the baffle plate 203 blocks the PCB board 7 from moving further downward, thereby reminding the staff that it has been inserted in place, avoiding the PCB board 7 from being inserted too deeply, ensuring that the insertion depth of each PCB board 7 is relatively consistent, and at this time, the spacing between two adjacent PCB boards 7 is the same as the spacing between two adjacent partitions 3001. When the PCB board 7 needs to be transported to the production line by the intelligent transport vehicle, it is only necessary to pick up the storage plate 4 and then make the storage plate 4 in a vertical state, such as Figure 1As shown, the alignment plate 5 is aligned with the corresponding alignment channel on the loading frame 2, and then the storage plate 4 is pushed backward to gradually insert the alignment plate 5 into the corresponding alignment channel on the loading frame 2. At this time, each PCB board 7 is located on the upper side of the adjacent partition 3001, and then the storage plate 4 is continued to be pushed backward, so that all the PCB boards 7 on the storage plate 4 are pushed into the corresponding partition 3001 at one time. Compared with the conventional insertion and placement method, the alignment plate 5 is inserted into the loading frame 2 to achieve rapid alignment of the PCB boards 7, thereby avoiding the skew of the PCB boards 7 caused by human errors when the PCB boards 7 are inserted. At the same time, all the PCB boards 7 on the storage plate 4 can be inserted into the loading frame 2 through only one alignment, thereby improving the loading efficiency of the PCB boards 7. When the PCB boards 7 are all pushed into the corresponding partitions 3001, as shown in the figure Figure 1 Taking the perspective shown as a reference, first unlock the locking block 9 on the lower side, then the sliding plate 8 can be raised and lowered on the storage plate 4, and then pull the sliding plates 8 on the left and right sides upward, thereby driving all the clamping plates 6 to move upward, so that the clamping plates 6 are disengaged from the PCB board 7, and lock the locking block 9 on the upper side to limit the movement of the sliding plate 8. At this time, pull the storage plate 4 out of the loading frame 2, and control the transport vehicle 1 to transport the loading frame 2 to the loading machine of the designated production line to complete the transportation of the PCB board 7.

[0027] On this basis, the PCB boards 7 are usually stacked on each other in the storage place, and the PCB boards 7 are taken out one by one when needed. However, some special PCB boards 7, such as semi-finished PCB boards 7, need to have a certain gap between adjacent PCB boards 7 to avoid mutual friction of electronic components on the PCB boards 7 when they are stored. Therefore, when the semi-finished PCB boards 7 are collected on the production line, a special storage rack is needed to store the semi-finished PCB boards 7. When the semi-finished PCB boards 7 are needed, they need to be taken out from the special storage rack and inserted into the storage plate 4, and the PCB boards need to be inserted and placed repeatedly. 7, which may cause serious wear on the edge of the PCB board 7, and also increase the workload of the staff, and reduce the conveying efficiency of the PCB board 7. Therefore, since there are gaps between the storage slots 4001, the storage plate 4 can be placed horizontally to be used as a temporary storage rack for the PCB board 7. The storage plate 4 is used to collect and store the finished PCB board 7. When the semi-finished PCB board 7 is needed, it is only necessary to insert the storage plate 4 into the loading frame 2 to avoid repeated insertion and placement of the semi-finished PCB board 7, reduce the wear on the edge of the PCB board 7, and reduce the workload of collecting and storing the PCB board 7, thereby improving the conveying efficiency of the PCB board 7.

[0028] Furthermore, in the existing process of storing PCB boards 7, in order to facilitate the staff to continuously take out the storage boards 4 within a small range, the storage boards 4 are usually stacked. The existing storage boards 4 are usually stacked by placing the upper storage board 4 filled with PCB boards 7 directly on the lower PCB boards 7, and the upper storage board 4 is supported by the lower PCB boards 7. When the storage boards 4 are stacked too high, the PCB boards 7 located at the lower layer are easily subjected to excessive pressure and deformed, thereby reducing the quality of the PCB boards 7. For this reason, by setting the length of the alignment board 5 to be greater than P The length of the CB board 7 is adjusted so that the storage board 4 on the upper layer is placed on the alignment board 5 on the lower storage board 4. When the storage boards 4 are stacked, the PCB board 7 is prevented from being squeezed by the upper storage board 4, thereby preventing the PCB board 7 from being deformed due to pressure, thereby improving the quality of the PCB board 7. On this basis, when the upper storage board 4 is placed on the alignment board 5 of the lower storage board 4, the groove 4002 of the upper storage board 4 is stuck on the alignment board 5 of the lower storage board 4, thereby preventing lateral displacement of the storage boards 4 when they are stacked, thereby improving the safety of the stacking of the storage boards 4.

[0029] Furthermore, when the storage plate 4 stores the PCB board 7, since the alignment plate 5 is arranged to surround the storage plate 4, when the storage plate 4 accidentally falls when being picked up manually, the alignment plate 5 contacts the ground before the PCB board 7 and absorbs part of the impact received by the storage plate 4, thereby preventing the PCB board 7 from directly contacting the ground and causing damage to the PCB board 7 when the storage plate 4 accidentally falls, thereby improving the safety of taking the storage plate 4.

[0030] Due to defects in some semi-finished PCB boards 7, for example, the PCB board 7 may be slightly bent and deformed due to uneven heating during the welding process. When the PCB board 7 is manually inserted into the loading frame 2, it is usually not detectable by the naked eye. For this reason, when the alignment plate 5 is inserted into the loading frame 2 and all the PCB boards 7 on the storage plate 4 are pushed backwards onto the corresponding partition 3001, the PCB board 7 is located between the adjacent partition 3001 and the limiting roller 201, and the gap width between the limiting roller 201 and the partition 3001 is consistent with the thickness of the PCB board 7. Then the locking block 9 on the lower side is unlocked, and the sliding plate 8 is slid upward to disengage the clamping plate 6 from the PCB board 7 until the clamping plate 6 fits into the upper end of the adjacent storage groove 4001. After that, it stops and locks the locking block 9 on the upper side, at this time, the storage plate 4 is pushed to move backward, driving the baffle 203 to move backward synchronously, thereby pushing the PCB board 7 to move backward through the baffle 203. At the same time, the PCB board 7 is limited by the limiting roller 201 and the partition 3001. When the PCB board 7 is not deformed, the PCB board 7 passes smoothly through the gap between the limiting roller 201 and the partition 3001. When the PCB board 7 is slightly bent, the slightly bent part will be larger than the gap between the limiting roller 201 and the partition 3001, so that the PCB board 7 is subjected to a certain friction force and is stuck between the limiting roller 201 and the partition 3001, preventing the slightly bent PCB board 7 from continuing to enter the partition 3001, on this basis, by setting the surface of the limiting roller 201 to be made of rubber material, the friction between the limiting roller 201 and the PCB board 7 is increased, thereby increasing the resistance of the deformed PCB board 7 entering between the limiting roller 201 and the partition 3001, and improving the effect of the bending detection of the PCB board 7. As the storage plate 4 is pushed backward manually, the undeformed PCB board 7 continues to move backward under the push of the corresponding baffle 203, and the bent PCB board 7 stops moving due to the obstruction of the limiting roller 201, and the corresponding baffle 203 is pushed forward. With the view from left to right as the reference, the baffle 203 is rotated ninety degrees clockwise, and the torsion spring between the baffle 203 and the storage plate 4 is compressed. Subsequently, the bent PCB board 7 protrudes from the front side of the storage groove 4001. At this time, it is only necessary to manually pull out the PCB board 7 protruding from the front side of the storage groove 4001, thereby improving the yield rate of the PCB board 7. Compared with the method of manually inserting the PCB board 7, the bending degree of the PCB board 7 is simultaneously detected during the process of inserting the PCB board 7, thereby improving the yield rate of the PCB board 7. On this basis, by setting the height of the storage groove 4001 to be greater than the thickness of the finished PCB board 7, when the clamping plate 6 is detached from the PCB board 7, the distance between the clamping plate 6 and the PCB board 7 is greater than the thickness of the finished PCB board 7, thereby avoiding damage caused by scratches between the electronic components on the PCB board 7 and the clamping plate 6 when the PCB board 7 is manually pulled out.

[0031] On this basis, by setting the connecting frame 202 to be able to move up and down on the fixing frame 3, when the thickness of the PCB board 7 changes, by loosening the adjusting bolt, the connecting frame 202 can be able to move up and down on the fixing frame 3, thereby driving all the limiting rollers 201 to move up and down, thereby adjusting the gap between the limiting rollers 201 and the adjacent partition 3001, thereby adapting to the detection of PCB boards 7 with different thicknesses.

[0032] Example 2 On the basis of Example 1, Figure 1 , Figure 8 and Fig. 9 As shown, the limiting system includes a fixing rod 301 and a limiting block 302; two left-right symmetrical fixing rods 301 are slidably connected to the storage plate 4; each fixing rod 301 is rotatably connected to a plurality of limiting blocks 302 via a torsion spring; each limiting block 302 is located in an adjacent storage slot 4001; and the fixing frame 3 is configured to be able to slide on the loading frame 2.

[0033] Furthermore, in order to ensure that the PCB board 7 is always located in the middle of the storage slot 4001, each limiting block 302 is provided with an inclined surface 30201; the two inclined surfaces 30201 in the same storage slot 4001 are arranged symmetrically.

[0034] Since the sizes of PCB boards 7 are not the same, in order to improve the adaptability to the sizes of PCB boards 7, the fixing frame 3 is arranged to be slidable on the loading frame 2, so that it is convenient to manually adjust the distance between the two fixing frames 3 to be consistent with the width of the PCB board 7, thereby improving the adaptability of the loading frame 2 to the PCB board 7, and the fixing rod 301 is arranged to be slidable on the receiving plate 4, so that it is convenient to manually adjust the distance between the two limit blocks 302 in the same receiving slot 4001 to be consistent with the width of the PCB board 7, thereby improving the adaptability of the receiving plate 4 to the PCB board 7, and when the PCB board 7 contacts the limit blocks 302, the two inclined surfaces 30201 in the same receiving slot 4001 guide the PCB board 7 to be in the middle of the receiving slot 4001, thereby adapting to different PCB board 7 widths. The PCB board 7 is always located in the middle of the receiving slot 4001, which is convenient for the subsequent insertion of the PCB board 7 into the loading frame 2.

[0035] Although the present disclosure has been shown and described with reference to specific exemplary embodiments of the present disclosure, it should be understood by those skilled in the art that various changes in form and details may be made to the present disclosure without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above-mentioned embodiments, but should be determined not only by the appended claims, but also by the equivalents of the appended claims.

Claims

1. A conveying device for PCB printing, comprising a transport vehicle (1), a loading frame (2) and a fixing frame (3); the transport vehicle (1) is provided with a loading frame (2); two fixing frames (3) are provided on the loading frame (2) in a left-right symmetrical manner; a plurality of partitions (3001) are provided on opposite sides of the two fixing frames (3); the characteristics are: The invention also comprises a storage plate (4), an alignment plate (5), a clamping plate (6), a sliding plate (8), a locking block (9) and a limit system; a storage plate (4) for fixing and storing a PCB board (7) is plugged into the loading frame (2); a plurality of alignment plates (5) are arranged on the side of the storage plate (4) close to the loading frame (2); an alignment channel adapted to the alignment plate (5) is provided on the loading frame (2); a plurality of storage slots (4001) are provided on the storage plate (4), and each storage slot (4001) is arranged to penetrate the storage plate (4); a PCB board (7) is placed in each storage slot (4001); each storage slot (4001) A clamping plate (6) is installed on each of the two adjacent storage grooves (4001); the distance between the bottoms of two adjacent partitions (3001) is the same as the distance between the bottoms of two adjacent partitions (3001); a sliding plate (8) is slidably connected to the left and right sides of the storage plate (4); a plurality of connecting blocks (8001) are provided on each sliding plate (8); each connecting block (8001) is fixedly connected to an adjacent clamping plate (6); two locking blocks (9) symmetrical in upper and lower directions are fixedly connected to the left and right sides of the storage plate (4); each sliding plate (8) is slidably connected to two adjacent locking blocks (9); and a limit system for limiting the insertion depth of the PCB board (7) is installed on the storage plate (4).

2. A conveying device for PCB printing according to claim 1, characterized in that: The length of the alignment plate (5) is greater than the length of the PCB board (7).

3. A conveying device for PCB printing according to claim 2, characterized in that: A plurality of alignment plates (5) are arranged to surround the storage plate (4).

4. A conveying device for PCB printing according to claim 3, characterized in that: A plurality of grooves (4002) are provided on the side of the storage plate (4) away from the loading frame (2); the positions of the grooves (4002) and the alignment plates (5) correspond one to one.

5. A conveying device for PCB printing according to claim 1, characterized in that: It also comprises a limiting roller (201), a connecting frame (202) and a baffle (203); each fixing frame (3) is mounted with a connecting frame (202); each connecting frame (202) is rotatably connected to a plurality of limiting rollers (201) for detecting the bending degree of the PCB board (7); each limiting roller (201) is located between two adjacent partitions (3001); and the bottom of each storage slot (4001) is connected to a baffle (203) via a torsion spring.

6. A conveying device for PCB printing according to claim 5, characterized in that: The height of the storage groove (4001) is set to be greater than the finished thickness of the PCB board (7).

7. A conveying device for PCB printing according to claim 5, characterized in that: The surface of the limiting roller (201) is configured to be made of rubber material.

8. A conveying device for PCB printing according to claim 5, characterized in that: The connecting frame (202) is configured to be movable in a lifting manner on the fixing frame (3), and the connecting frame (202) and the fixing frame (3) are fixed by means of adjusting bolts.

9. A conveying device for PCB printing according to claim 8, characterized in that: The limiting system comprises a fixing rod (301) and a limiting block (302); two fixing rods (301) are slidably connected to the storage plate (4) in a left-right symmetrical manner; each fixing rod (301) is rotatably connected to a plurality of limiting blocks (302) via a torsion spring; each limiting block (302) is located in an adjacent storage slot (4001); and the fixing frame (3) is configured to be slidable on the loading frame (2).

10. A conveying device for PCB printing according to claim 9, characterized in that: Each limiting block (302) is provided with an inclined surface (30201); the two inclined surfaces (30201) in the same storage slot (4001) are arranged in a left-right symmetrical manner.

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