PCB (Printed Circuit Board) feeding system and feeding method

Abstract

The invention discloses a PCB (Printed Circuit Board) loading system and a PCB loading method, and belongs to the technical field of PCB processing. Comprising a supporting frame and further comprises a second moving plate slidably connected to the surface of the supporting frame, a pushing block is fixedly connected to the surface of the second moving plate, a first sliding groove is formed in the surface of the supporting frame, and the pushing block is slidably connected into the first sliding groove; the pushing mechanism is arranged on the supporting frame; the first rotating rods are symmetrically and rotationally connected to the side wall of the supporting frame, a first chain is in transmission connection between every two adjacent first rotating rods, second rotating rods are symmetrically and rotationally connected to the side wall of the supporting frame, a second chain is in transmission connection between every two adjacent second rotating rods, and supporting plates are fixedly connected to the first chains and the second chains; the power mechanism is arranged on the supporting frame, and the power mechanism is used for driving the first rotating rod and the second rotating rod to rotate. According to the PCB separating device, the board face of a PCB can be prevented from being damaged by friction, the thin PCB can be effectively separated, and the machining quality of the PCB is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of PCB circuit board processing, and in particular to a PCB circuit board mounting system and a PCB circuit board mounting method. Background Art

[0002] Printed circuit boards (PCBs), also known as circuit boards, are important electronic components and are known as the "mother of electronic components." Circuit boards are divided into single-sided boards, double-sided boards, and multi-layer boards. On the most basic PCB, the parts are concentrated on one side, and the wires are concentrated on the other side. This type of PCB is called a single-sided board. Double-sided boards have copper cladding and wiring on both sides, and the lines between the two layers can be connected through vias to form the required network connection. Multi-layer boards refer to printed boards with more than three layers of conductive graphic layers and insulating materials in between, which are laminated and the conductive graphics are interconnected as required. In the process of PCB circuit board processing, it is often necessary to load the stacked PCB circuit boards one by one.

[0003] At present, most of the PCB loading machines separate the stacked PCB boards by rolling. When pressing, the tilting force generated will form a vertical component force, which will squeeze the PCB boards. At the same time, when the two rollers roll, the friction force makes the PCB boards move forward and enter the transmission track. If the friction force of the upper PCB board drives the lower PCB board to move together, the height limit gap between the two rollers is adjusted to allow only one to pass. In this case, the two PCB boards will be squeezed at the rollers, which may easily cause friction damage to the PCB board surface. Thinner PCBs cannot be effectively separated and there is a risk of breakage and damage. Therefore, they need to be improved. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that two PCB boards are squeezed at the roller, which easily causes friction damage to the PCB board surface, and thinner PCBs cannot be effectively separated and have the risk of breakage and damage. A PCB board loading system and board loading method are proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A PCB circuit board loading system comprises a support frame, and also includes: a second movable plate slidably connected to the surface of the support frame, a push block is fixedly connected to the surface of the second movable plate, a first slide groove is opened on the surface of the support frame, and the push block is slidably connected in the first slide groove; a pushing mechanism arranged on the support frame, and the pushing mechanism is used to make the push block reciprocate; a first rotating rod symmetrically connected to the side wall of the support frame, a first chain is connected in transmission between adjacent first rotating rods, a second rotating rod is symmetrically connected to the side wall of the support frame, a second chain is connected in transmission between adjacent second rotating rods, and the first chain and the second chain are both fixedly connected to the support plate; a power mechanism arranged on the support frame, and the power mechanism is used to drive the first rotating rod and the second rotating rod to rotate.

[0006] In order to reduce the deviation of the PCB circuit board during the transportation of the PCB circuit board, preferably, the support plate is L-shaped.

[0007] In order to facilitate the reciprocating movement of the pushing block, preferably, the pushing mechanism includes: a first motor fixedly connected to the surface of the supporting frame, the output end of the first motor fixedly connected to the moving frame through a first rotating shaft; a first guide rod fixedly connected to the side wall of the supporting frame, the outer wall of the first guide rod is slidably connected to the first moving plate, the bottom of the first moving plate is fixedly connected to the second guide rod, and the second moving plate is slidably connected to the outer wall of the second guide rod; a connecting plate rotatably connected to the surface of the second moving plate, the side wall of the connecting plate is fixedly connected to the third guide rod, the third guide rod is slidably connected to the moving frame, and a first spring is fixedly connected between the moving frame and the connecting plate.

[0008] In order to conveniently limit the moving range of the second movable plate and the third guide rod, further, the free ends of the second guide rod and the third guide rod are fixedly connected to a limiting disk.

[0009] The transmission gear of the first transmission gear is connected with the transmission gear of the first transmission gear and the transmission gear of the second transmission gear is connected with the transmission gear of the first transmission gear and the transmission gear of the second transmission gear is connected with the transmission gear of the third gear.

[0010] In order to facilitate the PCB circuit boards to be lowered one by one, further, the fifth rotating rod is coaxial with the fourth rotating rod, and the driven rods are arranged in a circular array with the axis of the fifth rotating rod as the center, and the number of the driven rods is four.

[0011] In order to facilitate the transportation of the PCB circuit board to the protection plate, further, the side wall of the support frame is fixedly connected with a guide plate, the surface of the support frame is fixedly connected with a divider, the output end of the divider is fixedly connected with a second turntable, and the guide plate is inclined toward the second turntable.

[0012] In order to facilitate the positioning of the PCB circuit board, further, a slot is provided on the surface of the second turntable.

[0013] In order to facilitate superimposing the protection plate on the surface of the PCB circuit board, further, the inner wall of the support frame is rotatably connected with the sixth rotating rod and the seventh rotating rod, and a conveyor belt is transmission-connected between the sixth rotating rod and the seventh rotating rod, and a partition plate is fixedly connected to the surface of the conveyor belt, and the outer wall of the seventh rotating rod is fixedly connected to the second bevel gear, and the outer wall of the first rotating shaft is fixedly connected to the first bevel gear, and the first bevel gear and the second bevel gear are meshed with each other.

[0014] A method for mounting a PCB circuit board, the operation steps are as follows: Step 1: Stack the PCB circuit boards vertically; Step 2: Transmit the PCB circuit boards one by one laterally and intermittently; Step 3: Fix the PCB circuit board and transport the PCB circuit board to the protection board; Step 4: Overlay the protection plate on the surface of the PCB circuit board.

[0015] Compared with the prior art, the present invention provides a PCB board loading system, which has the following beneficial effects: 1. The PCB circuit board loading system places the PCB circuit board on the surface of the support plate, starts the first motor to drive the first rotating shaft to rotate, the first rotating shaft drives the moving frame to rotate, the moving frame drives the third guide rod to rotate, the third guide rod drives the first moving plate to move on the first guide rod, so that the push block pushes the PCB circuit board on the corresponding support plate to move, when the first moving plate moves to the rightmost side, the third guide rod causes the second moving plate to descend, the second moving plate drives the push block to descend, and continues to rotate the first rotating shaft, so that the push block returns to the initial position.

[0016] 2. In the PCB board loading system, under the transmission action of the fourth chain, the first rotating shaft drives the fourth rotating rod to rotate, the fourth rotating rod drives the first rotating disk to rotate, the first rotating disk drives the driving plate to rotate, the driving plate drives the driven rod to move, the driven rod drives the eccentric wheel to rotate, the eccentric wheel drives the fifth rotating rod to rotate, the fifth rotating rod drives the worm to rotate, the worm drives the worm wheel to rotate, the worm wheel drives the third rotating rod to rotate, and the third rotating rod drives the first gear to rotate. At the same time, under the transmission action of the third chain, the third rotating rod drives the first rotating rod to rotate, so that the supporting plate is moved, so as to facilitate the transmission of PCB circuit boards one by one. The present invention adopts the method of intermittently pushing PCB circuit boards instead of the traditional method of roller extrusion and conveying, which can avoid friction damage to the surface of the PCB circuit board, can effectively separate thinner PCB circuit boards, and improves the processing quality of the PCB circuit boards.

[0017] 3. The PCB board loading system transports the PCB circuit board to the corresponding card slot without loss, and then starts the divider to drive the second turntable to rotate, so as to facilitate the transportation of the PCB circuit board to the conveyor belt. The first rotating shaft drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, the second bevel gear drives the seventh rotating rod to rotate, and under the transmission action of the conveyor belt, the seventh rotating rod drives the sixth rotating rod to rotate, so as to facilitate the transportation of the protection plate located between adjacent partition plates to the surface of the PCB circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a PCB board loading system proposed by the present invention; Figure 2 A PCB board loading system proposed by the present invention Figure 1 A schematic diagram of the structure enlargement at point A; Figure 3 A PCB board loading system proposed by the present invention Figure 1 A magnified schematic diagram of the structure at B in Figure 4 A schematic diagram of the structure of a material pushing mechanism in a PCB board loading system proposed by the present invention Figure 1 ; Figure 5 A schematic diagram of the structure of a material pushing mechanism in a PCB board loading system proposed by the present invention Figure 2 ; Figure 6 A partial structural schematic diagram of a PCB circuit board mounting system proposed by the present invention; Figure 7 A PCB board loading system proposed by the present invention Figure 6 Schematic diagram of the enlarged structure at position C in FIG.

[0019] In the figure: 1, support frame; 101, first motor; 102, first rotating shaft; 103, moving frame; 104, first guide rod; 105, first moving plate; 106, second guide rod; 107, second moving plate; 108, connecting plate; 109, third guide rod; 2, first spring; 201, first slide groove; 202, first rotating rod; 203, second rotating rod; 204, first chain; 205, second chain; 206, support plate; 207, third rotating rod; 208, first gear; 209, third chain; 3, fourth rotating rod; 30 1. First turntable; 302. Drive plate; 303. Eccentric wheel; 304. Follower rod; 305. Fifth turntable; 306. Worm wheel; 307. Worm; 308. Fourth chain; 309. Limiting plate; 4. Divider; 401. Second turntable; 402. Guide plate; 403. Sixth turntable; 404. Seventh turntable; 405. First bevel gear; 406. Conveyor belt; 407. Dividing plate; 408. Second bevel gear; 409. Slot; 5. Push block; 501. Compression airbag; 502. Connecting pipe; 503. Correction airbag. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Example

[0022] Reference Figure 1-Figure 7 At present, most of the loading machines separate the stacked PCB boards by rolling. When pressing, the tilting force generated will form a component force in the vertical direction, which will squeeze the PCB board; at the same time, when the two rollers are rolling, the friction force is used to make the PCB board move forward and enter the transmission track. If the friction force of the upper PCB board drives the lower PCB board to move together, then only one of the PCB boards is allowed to pass by adjusting the height limit gap between the two rollers, then the two PCB boards will be squeezed at the rollers, which may easily cause the PCB board surface to be damaged by friction. For thinner PCBs, they cannot be effectively separated and there is a risk of breakage and damage. Therefore, the present invention provides a PCB board loading system, including a support frame 1, and the PCB board loading system also includes: a support frame 1 slidably connected to the support frame 1. A second movable plate 107 on the surface of the support frame 1, the surface of the second movable plate 107 is fixedly connected with a push block 5, a first slide groove 201 is opened on the surface of the support frame 1, and the push block 5 is slidably connected in the first slide groove 201; a pushing mechanism is arranged on the support frame 1, and the pushing mechanism is used to make the push block 5 reciprocate; a first rotating rod 202 is symmetrically connected to the side wall of the support frame 1, and a first chain 204 is connected to the adjacent first rotating rods 202 for transmission, and a second rotating rod 203 is symmetrically connected to the side wall of the support frame 1 for rotation, and a second chain 205 is connected to the adjacent second rotating rods 203 for transmission, and a support plate 206 is fixedly connected to the first chain 204 and the second chain 205; a power mechanism is arranged on the support frame 1, and the power mechanism is used to drive the first rotating rod 202 and the second rotating rod 203 to rotate.

[0023] It should be noted that a discharge slot is provided on the side wall of the support frame 1. Before transportation, the PCB circuit board is placed on the support plate 206. Since there is a gap between adjacent PCB circuit boards, the adjacent PCB circuit boards do not affect each other during transportation, which can effectively reduce damage to the PCB circuit boards.

[0024] In order to reduce the deviation of PCB circuit boards during the transportation process, refer to Figure 1 , Figure 4 as well as Figure 6 , the support plate 206 is L-shaped.

[0025] Reference Figure 2 as well as Figure 4-Figure 5The pushing mechanism includes: a first motor 101 fixedly connected to the surface of the support frame 1, the output end of the first motor 101 is fixedly connected to the moving frame 103 through the first rotating shaft 102; a first guide rod 104 fixedly connected to the side wall of the support frame 1, the outer wall of the first guide rod 104 is slidably connected to the first moving plate 105, the bottom of the first moving plate 105 is fixedly connected to the second guide rod 106, and the second moving plate 107 is slidably connected to the outer wall of the second guide rod 106; a connecting plate 108 rotatably connected to the surface of the second moving plate 107, the side wall of the connecting plate 108 is fixedly connected to the third guide rod 109, the third guide rod 109 is slidably connected to the moving frame 103, and a first spring 2 is fixedly connected between the moving frame 103 and the connecting plate 108.

[0026] In order to conveniently limit the movement range of the second movable plate 107 and the third guide rod 109, refer to Figure 4-Figure 5 The free ends of the second guide rod 106 and the third guide rod 109 are both fixedly connected to the limiting plate 309 .

[0027] Reference Figure 4-Figure 7 The power mechanism includes: a third rotating rod 207 rotatably connected to the side wall of the support frame 1, a third chain 209 is transmission-connected between one of the first rotating rods 202 and the third rotating rod 207, a first gear 208 is fixedly connected to the outer wall of one of the second rotating rods 203 and the third rotating rod 207, and adjacent first gears 208 are meshed with each other; a fourth rotating rod 3 rotatably connected to the surface of the support frame 1, a fourth chain 308 is transmission-connected between the fourth rotating rod 3 and the first rotating shaft 102, and a first gear 208 is fixedly connected to the outer wall of the fourth rotating rod 3 A turntable 301, a driving plate 302 is fixedly connected to the surface of the first turntable 301; a fifth rotating rod 305 is rotatably connected to the surface of the support frame 1, an eccentric wheel 303 is fixedly connected to the outer wall of the fifth rotating rod 305, a plurality of driven rods 304 are fixedly connected to the surface of the eccentric wheel 303, and the driven rods 304 and the driving plate 302 can be opposed and separated; a worm 307 is fixedly connected to the outer wall of the fifth rotating rod 305, a worm wheel 306 is fixedly connected to the outer wall of the third rotating rod 207, and the worm wheel 306 and the worm 307 are meshed with each other.

[0028] In order to facilitate the PCB circuit boards to be lowered one by one, refer to Figure 5 The fifth rotating rod 305 is coaxial with the fourth rotating rod 3 , and the driven rods 304 are arranged in a circular array with the axis of the fifth rotating rod 305 as the center, and the number of the driven rods 304 is four.

[0029] It is necessary to add that The PCB circuit board is placed on the surface of the support plate 206, and the first motor 101 is started to drive the first rotating shaft 102 to rotate. On the one hand, the first rotating shaft 102 drives the moving frame 103 to rotate, and the moving frame 103 drives the third guide rod 109 to rotate. The third guide rod 109 drives the first moving plate 105 to move on the first guide rod 104, so that the push block 5 pushes the PCB circuit board on the corresponding support plate 206 to move. When the first moving plate 105 moves to the far right, the third guide rod 109 causes the second moving plate 107 to descend, and the second moving plate 107 drives the push block 5 to descend, and continues to rotate the first rotating shaft 102, so that the push block 5 returns to the initial position.

[0030] On the other hand, under the transmission action of the fourth chain 308, the first rotating shaft 102 drives the fourth rotating rod 3 to rotate, the fourth rotating rod 3 drives the first rotating disk 301 to rotate, the first rotating disk 301 drives the driving plate 302 to rotate, the driving plate 302 drives the driven rod 304 to move, the driven rod 304 drives the eccentric wheel 303 to rotate, the eccentric wheel 303 drives the fifth rotating rod 305 to rotate, the fifth rotating rod 305 drives the worm 307 to rotate, the worm 307 drives the worm wheel 306 to rotate, and the worm wheel 306 drives the third rotating rod 2 07 rotates, the third rotating rod 207 drives the first gear 208 to rotate, and at the same time, under the transmission action of the third chain 209, the third rotating rod 207 drives the first rotating rod 202 to rotate, so that the supporting plate 206 moves, so as to facilitate the transmission of PCB circuit boards one by one. The present invention adopts an intermittent pushing method of PCB circuit boards to replace the traditional roller extrusion conveying method, which can avoid friction damage to the surface of the PCB circuit board, can effectively separate thinner PCB circuit boards, and improve the processing quality of the PCB circuit boards. Example

[0031] Reference Figure 1 as well as Figure 4 , which is basically the same as Example 1, and further, a specific implementation scheme of superimposing the protection plate on the surface of the PCB circuit board is added.

[0032] In order to facilitate the transportation of PCB circuit boards to the protection board, refer to Figure 1 as well as Figure 4 A guide plate 402 is fixedly connected to the side wall of the support frame 1 , a divider 4 is fixedly connected to the surface of the support frame 1 , a second turntable 401 is fixedly connected to the output end of the divider 4 , and the guide plate 402 is inclined toward the second turntable 401 .

[0033] In order to facilitate the location of the PCB circuit board, refer to Figure 1 A slot 409 is formed on the surface of the second rotating disk 401 .

[0034] In order to facilitate the superposition of the protection plate on the surface of the PCB circuit board, refer to Figure 1 as well as Figure 4 The inner wall of the support frame 1 is rotatably connected with the sixth rotating rod 403 and the seventh rotating rod 404, and a conveyor belt 406 is transmission-connected between the sixth rotating rod 403 and the seventh rotating rod 404. A partition plate 407 is fixedly connected to the surface of the conveyor belt 406, and a second bevel gear 408 is fixedly connected to the outer wall of the seventh rotating rod 404. The outer wall of the first rotating shaft 102 is fixedly connected with the first bevel gear 405, and the first bevel gear 405 and the second bevel gear 408 are meshed with each other.

[0035] By transporting the PCB circuit board to the corresponding card slot 409 without loss, and then starting the divider 4 to drive the second turntable 401 to rotate, the PCB circuit board is conveniently transported to the conveyor belt 406, the first rotating shaft 102 drives the first bevel gear 405 to rotate, the first bevel gear 405 drives the second bevel gear 408 to rotate, the second bevel gear 408 drives the seventh rotating rod 404 to rotate, and under the transmission action of the conveyor belt 406, the seventh rotating rod 404 drives the sixth rotating rod 403 to rotate, so as to facilitate the transportation of the protection plate located between the adjacent partition plates 407 to the surface of the PCB circuit board.

[0036] Please refer to Figure 3 A compression airbag 501 is fixedly connected between the first movable plate 105 and the support frame 1, a deviation-correcting airbag 503 is symmetrically fixedly connected to the bottom of the support frame 1, and a connecting pipe 502 is fixedly connected between the deviation-correcting airbag 504 and the compression airbag 501.

[0037] When the first movable plate 105 slides on the first guide rod 104 in the direction away from the second turntable 401, the compressed airbag 501 can be stretched, so that the airflow in the correcting airbag 503 enters the compressed airbag 501. When the first movable plate 105 slides in the direction of the second turntable 401, on the one hand, it is convenient to transfer the PCB circuit board to the corresponding card slot 409. On the other hand, the first movable plate 105 squeezes the compressed airbag 501, so that the airflow in the compressed airbag 501 flows into the correcting airbag 503, so that the correcting airbag 503 is continuously filled, and then it is convenient to correct the position of the PCB circuit board located between the two correcting airbags 503, thereby automatically positioning and correcting the PCB circuit board, and improving the accuracy of PCB circuit board loading.

[0038] In addition, the correction airbag 503 is filled with a sponge that absorbs an organic solvent, which can be acetone. As the gas between the correction airbag 503 and the compression airbag 501 is switched, the transfer of acetone molecules can react with the two rubber airbags. The acetone molecules compete with the interaction force between the polymer chains in the rubber, thereby reducing the interaction force between the polymer chains and making the rubber softer, thereby making the expansion of the correction airbag 503 and the compression of the compression airbag 501 more precise, and improving the adjustment accuracy of the objects in contact with the airbags, thereby making the adjustment of the PCB circuit board more precise.

[0039] A method for mounting a PCB circuit board, the operation steps are as follows: Step 1: placing the PCB circuit boards on the surface of the support plate 206 so that the PCB circuit boards are stacked at intervals in the vertical direction; Step 2: Start the first motor 101 to drive the first rotating shaft 102 to rotate, the first rotating shaft 102 drives the moving frame 103 to rotate, the moving frame 103 drives the third guide rod 109 to rotate, the third guide rod 109 drives the first moving plate 105 to move on the first guide rod 104, so that the push block 5 pushes the PCB circuit board on the corresponding support plate 206 to move; Step 3: clamp the PCB circuit board into the clamping slot 409, start the divider 4 to drive the second rotating disk 401 to rotate, so as to facilitate the transportation of the PCB circuit board to the protection plate; Step 4: The first rotating shaft 102 drives the first bevel gear 405 to rotate, the first bevel gear 405 drives the second bevel gear 408 to rotate, the second bevel gear 408 drives the seventh rotating rod 404 to rotate, and under the transmission action of the conveyor belt 406, the seventh rotating rod 404 drives the sixth rotating rod 403 to rotate, thereby facilitating the transportation of the protection plate located between adjacent partition plates 407 to the surface of the PCB circuit board.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A PCB board loading system, comprising a support frame (1), characterized in that: Also includes: A second movable plate (107) is slidably connected to the surface of the support frame (1), a push block (5) is fixedly connected to the surface of the second movable plate (107), a first slide groove (201) is formed on the surface of the support frame (1), and the push block (5) is slidably connected in the first slide groove (201); A material pushing mechanism disposed on the support frame (1), the material pushing mechanism being used to cause the pushing block (5) to move back and forth; A first rotating rod (202) is symmetrically rotatably connected to the side wall of the support frame (1), a first chain (204) is transmission-connected between adjacent first rotating rods (202), a second rotating rod (203) is symmetrically rotatably connected to the side wall of the support frame (1), a second chain (205) is transmission-connected between adjacent second rotating rods (203), and a support plate (206) is fixedly connected to both the first chain (204) and the second chain (205); A power mechanism is arranged on the support frame (1), and is used to drive the first rotating rod (202) and the second rotating rod (203) to rotate.

2. A PCB board loading system according to claim 1, characterized in that: The support plate (206) is L-shaped.

3. A PCB board loading system according to claim 1, characterized in that: The pushing mechanism comprises: A first motor (101) fixedly connected to the surface of the support frame (1), wherein an output end of the first motor (101) is fixedly connected to a moving frame (103) via a first rotating shaft (102); A first guide rod (104) fixedly connected to the side wall of the support frame (1), a first movable plate (105) being slidably connected to the outer wall of the first guide rod (104), a second guide rod (106) being fixedly connected to the bottom of the first movable plate (105), and the second movable plate (107) being slidably connected to the outer wall of the second guide rod (106); A connecting plate (108) is rotatably connected to the surface of the second movable plate (107), a third guide rod (109) is fixedly connected to the side wall of the connecting plate (108), the third guide rod (109) is slidably connected to the movable frame (103), and a first spring (2) is fixedly connected between the movable frame (103) and the connecting plate (108).

4. A PCB board loading system according to claim 3, characterized in that: The free ends of the second guide rod (106) and the third guide rod (109) are both fixedly connected to the limiting plate (309).

5. A PCB board loading system according to claim 3, characterized in that: The power mechanism comprises: A third rotating rod (207) rotatably connected to the side wall of the support frame (1), wherein a third chain (209) is transmission-connected between one of the first rotating rods (202) and the third rotating rod (207), and a first gear (208) is fixedly connected to the outer wall of one of the second rotating rods (203) and the third rotating rod (207), and adjacent first gears (208) are meshed with each other; A fourth rotating rod (3) is rotatably connected to the surface of the support frame (1), a fourth chain (308) is transmission-connected between the fourth rotating rod (3) and the first rotating shaft (102), an outer wall of the fourth rotating rod (3) is fixedly connected to a first rotating disk (301), and a driving plate (302) is fixedly connected to the surface of the first rotating disk (301); A fifth rotating rod (305) is rotatably connected to the surface of the support frame (1), the outer wall of the fifth rotating rod (305) is fixedly connected to an eccentric wheel (303), the surface of the eccentric wheel (303) is fixedly connected to a plurality of driven rods (304), and the driven rods (304) and the driving plate (302) can be abutted against and separated from each other; A worm (307) is fixedly connected to the outer wall of the fifth rotating rod (305); a worm wheel (306) is fixedly connected to the outer wall of the third rotating rod (207); the worm wheel (306) and the worm (307) are meshed with each other.

6. A PCB board loading system according to claim 5, characterized in that: The fifth rotating rod (305) is coaxial with the fourth rotating rod (3), and the driven rods (304) are arranged in a circular array with the axis of the fifth rotating rod (305) as the center, and the number of the driven rods (304) is four.

7. A PCB board loading system according to claim 5, characterized in that: A guide plate (402) is fixedly connected to the side wall of the support frame (1), a divider (4) is fixedly connected to the surface of the support frame (1), an output end of the divider (4) is fixedly connected to a second rotating disk (401), and the guide plate (402) is inclined toward the second rotating disk (401).

8. A PCB board loading system according to claim 7, characterized in that: A slot (409) is provided on the surface of the second rotating disk (401).

9. A PCB board loading system according to claim 7, characterized in that: The inner wall of the support frame (1) is rotatably connected to a sixth rotating rod (403) and a seventh rotating rod (404); a conveyor belt (406) is transmission-connected between the sixth rotating rod (403) and the seventh rotating rod (404); a partition plate (407) is fixedly connected to the surface of the conveyor belt (406); a second bevel gear (408) is fixedly connected to the outer wall of the seventh rotating rod (404); a first bevel gear (405) is fixedly connected to the outer wall of the first rotating shaft (102); and the first bevel gear (405) and the second bevel gear (408) are meshed with each other.

10. A PCB circuit board mounting method, using a PCB circuit board mounting system according to any one of claims 1 to 9, characterized in that: The steps are as follows: Step 1: Stack the PCB circuit boards vertically; Step 2: Transmit the PCB circuit boards one by one laterally and intermittently; Step 3: Fix the PCB circuit board and transport the PCB circuit board to the protection board; Step 4: Overlay the protection plate on the surface of the PCB circuit board.

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