A circuit board assembly device

Abstract

This utility model discloses a circuit board assembly device, relating to the field of circuit board production. It includes a processing platform and a conveying mechanism. The processing platform is located on one side of the conveying mechanism and is equipped with a clamping mechanism. Two transfer mechanisms are symmetrically arranged on the clamping mechanism and the conveying mechanism. A flipping mechanism is provided between the processing platform and the conveying mechanism. The flipping mechanism includes a fixed base, with a flipping guide rod and two cylinders fixed to the top center of the fixed base. A connecting ring is fixed to the top of each cylinder, and a flipping plate is rotatably connected to the top of the connecting ring. A guide groove is provided on the flipping guide rod. The beneficial effect is that by setting up the flipping mechanism and the transfer mechanism, the processing platform and the conveying line are changed to a parallel relationship. This allows the conveying mechanism to bypass the currently operating processing platform and input circuit boards into the remaining unoperated processing platforms, thereby increasing the production speed on the production line and avoiding production stoppages due to machine damage.

Description

Technical Field

[0001] This utility model relates to the field of circuit board manufacturing, and in particular to a circuit board assembly device. Background Technology

[0002] Circuit boards are named as follows: ceramic circuit board, alumina ceramic circuit board, aluminum nitride ceramic circuit board, PCB board, aluminum substrate, high frequency board, thick copper board, impedance board, ultra-thin circuit board, ultra-thin circuit board, printed circuit board (copper etching technology), etc. Circuit boards make circuits miniaturized and more intuitive, playing an important role in the mass production of fixed circuits and the optimization of electrical appliance layout.

[0003] For example, patent document CN217721613U discloses a circuit board assembly apparatus, including a support mechanism for supporting the device, an assembly mechanism for assembling the circuit board, and the assembly mechanism mounted on top of the support mechanism. It also includes a fixing mechanism for fixing the circuit board and a heating mechanism for accelerating adhesive curing. The fixing mechanism is located on one side of the assembly mechanism, and the heating mechanism is located on the side of the fixing mechanism away from the assembly mechanism. This apparatus, by setting up the fixing mechanism, allows the two clamps to stably fix the circuit board, thus ensuring the assembly effect. By setting up the heating mechanism, the electric hot air blower can generate hot air to accelerate adhesive curing, thereby improving the production efficiency of the circuit board.

[0004] In existing technologies, most circuit boards are transferred to the vicinity of the assembly unit via a conveyor mechanism, and then processed. However, most assembly units and conveyor mechanisms are connected in series, and the next circuit board can only be processed after the previous circuit board has been processed. When the assembly unit malfunctions, it will greatly hinder the production work on the entire production line. Utility Model Content

[0005] The purpose of this invention is to provide a circuit board assembly device to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A circuit board assembly device includes a processing platform and a conveying mechanism. The processing platform is located on one side of the conveying mechanism and is equipped with a clamping mechanism. Two transfer mechanisms are symmetrically arranged on the clamping mechanism and the conveying mechanism. A flipping mechanism for exchanging the positions of the two transfer mechanisms is provided between the processing platform and the conveying mechanism. The flipping mechanism includes a fixed base, a flipping guide rod fixedly connected to the top center of the fixed base, two symmetrically arranged cylinders fixedly connected to the top of the fixed base, a connecting ring fixedly connected to the top of the two cylinders, and a flipping plate rotatably connected to the top of the connecting ring. A guide groove is provided on the flipping guide rod, and the flipping plate is slidably connected to the guide groove on the flipping guide rod in the middle. The guide groove on the flipping guide rod is shaped as two symmetrically arranged straight grooves connected to two spiral grooves. A guide plate is rotatably connected to the connection position of the spiral groove and the straight groove through a torsion spring. Symmetrically arranged connecting limit blocks are fixedly connected to both ends of the flipping plate.

[0008] Preferably, the transfer mechanism includes a transfer bracket that can be slidably connected to the connecting limit block. The top of the transfer bracket is provided with two symmetrically arranged upper brackets. A plurality of second spring rods are fixedly connected between the upper brackets and the transfer bracket. Conveyor belt assemblies are symmetrically arranged on the upper brackets and the transfer brackets.

[0009] Preferably, the processing platform includes a fixed bracket, a movable bracket slidably connected to the fixed bracket, a longitudinal motor fixedly connected to one side of the fixed bracket, a longitudinal lead screw fixedly connected to the output end of the longitudinal motor, the longitudinal lead screw being rotatably connected to the fixed bracket, and the longitudinal lead screw being threadedly connected to the movable bracket, a transverse motor fixedly connected to one side of the movable bracket, a transverse lead screw fixedly connected to the output end of the transverse motor, the transverse lead screw being rotatably connected to the movable bracket, a side bracket fixedly connected to one side of the fixed bracket, an electric telescopic rod fixedly connected to the upper end of the side bracket, and a glue applicator fixedly connected to the output end of the electric telescopic rod.

[0010] Preferably, the conveying mechanism includes a conveying support, a symmetrically arranged conveyor belt assembly is mounted on the top of the conveying support, and two symmetrically arranged second positioning blocks are fixedly connected to the conveying support.

[0011] Preferably, the clamping mechanism includes a clamping bracket threadedly connected to a transverse lead screw. The clamping bracket is U-shaped with one open end extending beyond the fixed bracket. Two symmetrically arranged first positioning blocks are fixedly connected to the clamping bracket. The first positioning blocks can contact and cooperate with the transfer bracket. Several fixed piston blocks are fixedly connected to the top of the clamping bracket. A sealing bracket is slidably connected to the upper end of the fixed piston block. The sealing bracket is L-shaped. A movable piston block is slidably connected to the other end of the sealing bracket. Hydraulic oil is filled into the sealing bracket. The movable piston block can contact the top of the upper bracket. A drive rod is fixedly connected to the outer side of several sealing brackets on one side. A lifting component is provided at the bottom of the drive rod.

[0012] Preferably, the lifting assembly includes a slide drive plate slidably connected to both sides of the clamping bracket. The slide drive plate is provided with an inclined slide groove. The lower end of the drive rod is slidably connected to the slide drive plate. A baffle is fixedly connected to one end of the slide drive plate. A first spring rod is fixedly connected between the baffle and the clamping bracket. Two symmetrically arranged protrusions are fixedly connected to the fixed bracket. The baffle can contact the protrusions.

[0013] Preferably, two symmetrically arranged driven gears are rotatably connected to both sides of the upper support. The driven gears are fixedly connected to the rotating shaft inside the conveyor belt assembly. A drive gear is rotatably connected to the outside of the conveyor belt assembly. A transmission gear meshes with one side of the drive gear. The transmission gear is rotatably connected to the conveyor belt assembly. The transmission gear can mesh with the driven gear. The drive gear is fixedly connected to the rotating shaft inside the conveyor belt assembly.

[0014] The beneficial effects are as follows: by setting up the flipping mechanism and the transfer mechanism, the processing platform and the conveyor line are changed to a parallel relationship. In this way, the conveyor mechanism can pass over the processing platform that is working and put the circuit board into the other unworking processing platform, thereby greatly increasing the production speed on the production line and avoiding the occurrence of production stoppage due to machine damage.

[0015] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a perspective view of a circuit board assembly device according to the present invention;

[0018] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 This is a perspective view of the conveying mechanism structure of the circuit board assembly device described in this utility model;

[0020] Figure 4 This is a perspective view of the relative positions of the processing platform and the clamping mechanism of the circuit board assembly device described in this utility model;

[0021] Figure 5 yes Figure 4 Enlarged view of point B in the middle;

[0022] Figure 6 This is a left sectional view of the sealing bracket of the circuit board assembly device described in this utility model;

[0023] Figure 7 This is a perspective view of the flipping mechanism structure of the circuit board assembly device described in this utility model;

[0024] Figure 8 This is a front view of the flipping mechanism of the circuit board assembly device described in this utility model;

[0025] Figure 9 This is a perspective view of the transfer mechanism structure of the circuit board assembly device described in this utility model;

[0026] Figure 10 yes Figure 8 A magnified view of point C in the middle.

[0027] The annotations in the attached figures are explained as follows:

[0028] 101. Fixed bracket; 102. Movable bracket; 103. Transverse lead screw; 104. Transverse motor; 105. Longitudinal lead screw; 106. Longitudinal motor; 107. Side bracket; 108. Electric telescopic rod; 109. Glue applicator head; 201. Clamping bracket; 202. First positioning block; 203. Slide drive plate; 204. Baffle; 205. First spring rod; 206. Protrusion; 207. Drive rod; 208. Sealing bracket; 209. Movable piston block; 2 10. Fixed piston block; 301. Conveying bracket; 302. Conveying belt assembly; 303. Second positioning block; 304. Drive gear; 305. Transmission gear; 401. Transfer bracket; 402. Upper bracket; 403. Second spring rod; 404. Driven gear; 405. Conveying belt assembly; 501. Fixed base; 502. Cylinder; 503. Tilting guide rod; 504. Tilting plate; 505. Connecting limit block; 506. Connecting ring; 507. Guide plate. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0030] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] The present invention will be further described below with reference to the accompanying drawings:

[0032] like Figures 1-10 As shown, a circuit board assembly device includes a processing platform and a conveying mechanism. The processing platform is located on one side of the conveying mechanism and is equipped with a clamping mechanism. Two transfer mechanisms are symmetrically arranged on the clamping mechanism and the conveying mechanism. A flipping mechanism for exchanging the positions of the two transfer mechanisms is provided between the processing platform and the conveying mechanism. The flipping mechanism includes a fixed base 501, a flipping guide rod 503 fixedly connected to the top center of the fixed base 501, two symmetrically arranged cylinders 502 fixedly connected to the top of the fixed base 501, a connecting ring 506 fixedly connected to the top of the two cylinders 502, and a flipping plate 504 rotatably connected to the top of the connecting ring 506. A guide groove is provided on the flipping guide rod 503, and the flipping plate 504 is slidably connected to the guide groove on the flipping guide rod 503. The guide groove on the flipping guide rod 503 is composed of two symmetrically arranged straight grooves connected by two screws. The spiral chute and the linear chute are connected by a guide plate 507 via a torsion spring. Symmetrically arranged connecting limit blocks 505 are fixedly connected to both ends of the tilting plate 504. The circuit board enters the transfer mechanism under the action of the conveying mechanism. Then, the cylinder 502 drives the connecting ring 506 to rise, which in turn drives the tilting plate 504 to rise. The tilting plate 504 then drives two transfer mechanisms to rise, disengaging from the clamping mechanism and the conveying mechanism, respectively. At this point, the tilting plate 504 rotates 180 degrees under the action of the guide chute. Then, the cylinder 502 drives the tilting plate 504 to fall, and the transfer mechanism carrying the unprocessed circuit board enters the clamping mechanism. The other transfer mechanism then engages with the conveying mechanism. Thus, while the processing platform is processing and assembling the circuit board, the conveying mechanism can bypass the working processing platform and transfer the circuit board to other unworking processing platforms, greatly increasing the production speed on the production line and preventing production stoppages due to machine damage.

[0033] The transfer mechanism includes a transfer bracket 401 that can be slidably connected to a connecting limit block 505. The connecting limit block 505 is T-shaped. The transfer bracket 401 has several through slots. The top of the transfer bracket 401 has two symmetrically arranged upper brackets 402. Several second spring rods 403 are fixedly connected between the upper brackets 402 and the transfer bracket 401. Conveyor belt assemblies 405 are symmetrically arranged on the upper brackets 402 and the transfer bracket 401. The transfer mechanism can cooperate with the conveying mechanism to transport circuit boards when there is no need to load or unload the processing platform. When it is necessary to load or unload the processing platform, the transfer mechanism uses the second spring rods 403 and the conveyor belt assembly 405 to make the circuit board stably positioned above the transfer bracket 401. Then, driven by the flipping mechanism, it cooperates with the clamping mechanism to clamp the circuit board more securely.

[0034] The processing platform includes a fixed bracket 101, a movable bracket 102 slidably connected to the fixed bracket 101, a longitudinal motor 106 fixedly connected to one side of the fixed bracket 101, a longitudinal lead screw 105 fixedly connected to the output end of the longitudinal motor 106, the longitudinal lead screw 105 being rotatably connected to the fixed bracket 101, and threadedly connected to the movable bracket 102. A transverse motor 104 fixedly connected to one side of the movable bracket 102, a transverse lead screw 103 fixedly connected to the output end of the transverse motor 104, the transverse lead screw 103 being rotatably connected to the movable bracket 102. The longitudinal motor 106 drives the longitudinal lead screw 105 to rotate, the longitudinal lead screw 105 drives the transverse lead screw 103 to move via a threaded connection, and the transverse motor 104 drives the transverse lead screw 103 to rotate. The horizontal lead screw 103 drives the clamping bracket 201 to move via a threaded connection, thus enabling the clamping bracket 201 to move freely in the horizontal and vertical directions, thereby achieving precise processing of the circuit board. A side bracket 107 is fixedly connected to one side of the fixed bracket 101, and an electric telescopic rod 108 is fixedly connected to the upper end of the side bracket 107. A glue applicator 109 is fixedly connected to the output end of the electric telescopic rod 108. With the cooperation of the freely moving clamping mechanism, the electric telescopic rod 108 drives the glue applicator 109 to approach the circuit board, and the lower end of the glue applicator 109 discharges glue to seal the circuit board. In addition, the electric telescopic rod 108 and the glue applicator 109 on the side bracket 107 can be replaced with a gripper and an electronic component conveying mechanism to realize the operation of inserting electronic components onto the circuit board.

[0035] The conveying mechanism includes a conveyor bracket 301, on the top of which is a symmetrically arranged conveyor belt assembly 302. Two symmetrically arranged second positioning blocks 303 are fixedly connected to the conveyor bracket 301. These second positioning blocks 303 can contact and engage with a transfer bracket 401. When a worker places a circuit board on the conveyor belt assembly 302, the assembly transports the circuit board to the vicinity of the processing platform. The second positioning blocks 303 have protrusions that engage with the through-slots on the transfer bracket 401, ensuring accurate positioning between the transfer mechanism and the conveying mechanism. Two symmetrically arranged driven gears 404 are rotatably connected to both sides of the upper bracket 402. These driven gears 404 are fixedly connected to a rotating shaft within the conveyor belt assembly 405. A drive gear 304 is rotatably connected to the outside of 302. A transmission gear 305 meshes with one side of the drive gear 304. The transmission gear 305 is rotatably connected to the conveyor belt assembly 302 and can mesh with the driven gear 404. The drive gear 304 is fixedly connected to the rotating shaft inside the conveyor belt assembly 302. While the transfer bracket 401 and the second positioning block 303 are engaged, the driven gear 404 and the transmission gear 305 mesh. When the conveyor belt assembly 302 moves, it drives the drive gear 304 to rotate. The drive gear 304 drives the transmission gear 305 to rotate. The transmission gear 305 drives the driven gear 404 to rotate. In this way, the conveyor belt assembly 405 can be driven to rotate in the same direction while the conveyor belt assembly 302 is moving.

[0036] The clamping mechanism includes a clamping bracket 201 threadedly connected to the transverse lead screw 103. The clamping bracket 201 is U-shaped, with one open end extending beyond the fixed bracket 101. Two symmetrically arranged first positioning blocks 202 are fixedly connected to the clamping bracket 201. The first positioning blocks 202 can contact and cooperate with the transfer bracket 401. Several fixed piston blocks 210 are fixedly connected to the top of the clamping bracket 201. A sealing bracket 208 is slidably connected to the upper end of the fixed piston blocks 210. The sealing bracket 208 is L-shaped, and a movable piston block 209 is slidably connected to the other end of the sealing bracket 208. The sealing bracket 208 is filled with... Hydraulic oil is present, and the movable piston block 209 can contact the top of the upper bracket 402. Several sealing brackets 208 on one side are fixedly connected to the outer side of the drive rod 207. A lifting assembly is provided at the bottom of the drive rod 207. The lifting assembly includes a sliding drive plate 203 slidably connected to both sides of the clamping bracket 201. The sliding drive plate 203 is provided with an inclined sliding groove. The lower end of the drive rod 207 is slidably connected to the sliding drive plate 203. A baffle 204 is fixedly connected to one end of the sliding drive plate 203. A first spring rod 205 is fixedly connected between the baffle 204 and the clamping bracket 201. Two symmetrically arranged protrusions are fixedly connected to the fixed bracket 101. 206. The baffle 204 can contact the protrusion 206. The clamping bracket 201 extends to the outside of the fixed bracket 101 under the drive of the transverse screw 103. During this process, the baffle 204 abuts against the protrusion 206, so the drive rod 207 is relatively stationary and the first spring rod 205 begins to extend. The clamping bracket 201 drives the drive rod 207 to continue to move backward. Thus, the drive rod 207 rises under the action of the inclined groove on the sliding drive plate 203. The drive rod 207 drives the sealing bracket 208 to rise. The sealing bracket 208 and the fixed piston block 210 move relative to each other. According to the hydraulic principle, the moving piston block at the other end of the sealing bracket 208... When 209 retracts, the moving piston block 209 releases its clamping grip on the upper bracket 402. After the transfer mechanism is replaced, the clamping bracket 201 moves away from the flip plate 504 under the drive of the transverse lead screw 103. The first positioning block 202 drives the transfer bracket 401 to move. During this process, the slide drive plate 203 and the drive rod 207 cooperate to drive the sealing bracket 208 to descend. The sealing bracket 208 drives the moving piston block 209 to extend, thereby achieving automatic clamping of the upper bracket 402. This increases the clamping degree of the upper bracket 402 on the circuit board, thus ensuring that the circuit board and the upper bracket 402 will not move relative to each other during the processing.

[0037] Working principle: The operator places the circuit board on the conveyor belt assembly 302, which transports the circuit board to the vicinity of the processing platform. The conveyor belt assembly 302 drives the circuit board between the two conveyor belt assemblies 405. At this time, the tilting plate 504 drives the two transfer mechanisms to rise, disengaging from the clamping mechanism and the conveying mechanism respectively. Then, the tilting plate 504 rotates 180 degrees under the action of the guide chute. Subsequently, the cylinder 502 drives the tilting plate 504 to descend, and the transfer mechanism carrying the unprocessed circuit board enters the clamping mechanism. The clamping bracket 201 moves away from the tilting plate 504 under the drive of the transverse lead screw 103. The first positioning block 202 drives the transfer bracket 401 to move. During this process, the chute drive plate 20... 3. The sealing bracket 208 is driven to descend in conjunction with the drive rod 207. The sealing bracket 208 drives the moving piston block 209 to extend, thereby achieving automatic clamping of the upper bracket 402. This increases the clamping degree of the upper bracket 402 on the circuit board, ensuring that the circuit board and the upper bracket 402 will not move relative to each other during processing. The longitudinal motor 106 drives the longitudinal lead screw 105 to rotate. The longitudinal lead screw 105 drives the transverse lead screw 103 to move through the threaded connection. The transverse motor 104 drives the transverse lead screw 103 to rotate. The transverse lead screw 103 drives the clamping bracket 201 to move through the threaded connection. This enables the clamping bracket 201 to move freely in the transverse and longitudinal directions, thereby achieving precise processing of the circuit board.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A circuit board assembly apparatus, comprising a processing platform and a conveying mechanism, characterized in that: The processing platform is located on one side of the conveying mechanism. A clamping mechanism is provided on the processing platform. Two transfer mechanisms are symmetrically arranged on the clamping mechanism and the conveying mechanism. A flipping mechanism for exchanging the positions of the two transfer mechanisms is provided between the processing platform and the conveying mechanism. The flipping mechanism includes a fixed base (501), a flipping guide rod (503) fixedly connected to the top center of the fixed base (501), and two symmetrically arranged cylinders (502) fixedly connected to the top of the fixed base (501). Connecting rings are fixedly connected to the tops of the two cylinders (502). (506) A flip plate (504) is rotatably connected to the top of the connecting ring (506). A guide groove is provided on the flip guide rod (503). The middle of the flip plate (504) is slidably connected to the guide groove on the flip guide rod (503). The guide groove on the flip guide rod (503) is formed by two symmetrically arranged straight grooves connected to two spiral grooves. The connection position between the spiral groove and the straight groove is rotatably connected to a guide plate (507) by a torsion spring. Symmetrically arranged connecting limit blocks (505) are fixedly connected to both ends of the flip plate (504).

2. The circuit board assembly apparatus according to claim 1, characterized in that: The transfer mechanism includes a transfer bracket (401) that can be slidably connected to the connecting limit block (505). The top of the transfer bracket (401) is provided with two symmetrically arranged upper brackets (402). A plurality of second spring rods (403) are fixedly connected between the upper brackets (402) and the transfer bracket (401). Conveyor belt assemblies (405) are symmetrically arranged on the upper brackets (402) and the transfer bracket (401).

3. The circuit board assembly apparatus according to claim 2, characterized in that: The processing platform includes a fixed bracket (101), a movable bracket (102) is slidably connected to the fixed bracket (101), a longitudinal motor (106) is fixedly connected to one side of the fixed bracket (101), a longitudinal lead screw (105) is fixedly connected to the output end of the longitudinal motor (106), the longitudinal lead screw (105) is rotatably connected to the fixed bracket (101), and the longitudinal lead screw (105) is threadedly connected to the movable bracket (102). A transverse motor (104) is fixedly connected to one side of the movable bracket (102), a transverse lead screw (103) is fixedly connected to the output end of the transverse motor (104), and the transverse lead screw (103) is rotatably connected to the movable bracket (102). A side bracket (107) is fixedly connected to one side of the fixed bracket (101), an electric telescopic rod (108) is fixedly connected to the upper end of the side bracket (107), and a glue applicator (109) is fixedly connected to the output end of the electric telescopic rod (108).

4. The circuit board assembly apparatus according to claim 2, characterized in that: The conveying mechanism includes a conveying bracket (301), on the top of which a symmetrically arranged conveyor belt assembly (302) is mounted, and two symmetrically arranged second positioning blocks (303) are fixedly connected to the conveying bracket (301).

5. A circuit board assembly apparatus according to claim 3, characterized in that: The clamping mechanism includes a clamping bracket (201) threadedly connected to the transverse lead screw (103). The clamping bracket (201) is U-shaped with one open end extending beyond the fixed bracket (101). Two symmetrically arranged first positioning blocks (202) are fixedly connected to the clamping bracket (201). The first positioning blocks (202) can contact and cooperate with the transfer bracket (401). A plurality of fixed piston blocks (210) are fixedly connected to the top of the clamping bracket (201). A sealing bracket (208) is slidably connected to the upper end of the piston block (210). The sealing bracket (208) is L-shaped. A movable piston block (209) is slidably connected to the other end of the sealing bracket (208). Hydraulic oil is filled into the sealing bracket (208). The movable piston block (209) can contact the top of the upper bracket (402). A drive rod (207) is fixedly connected to the outside of several sealing brackets (208) on one side. A lifting component is provided at the bottom of the drive rod (207).

6. A circuit board assembly apparatus according to claim 5, characterized in that: The lifting assembly includes a sliding drive plate (203) slidably connected to both sides of the clamping bracket (201). The sliding drive plate (203) is provided with an inclined sliding groove. The lower end of the drive rod (207) is slidably connected to the sliding drive plate (203). A baffle (204) is fixedly connected to one end of the sliding drive plate (203). A first spring rod (205) is fixedly connected between the baffle (204) and the clamping bracket (201). Two symmetrically arranged protrusions (206) are fixedly connected to the fixed bracket (101). The baffle (204) can contact the protrusions (206).

7. A circuit board assembly apparatus according to claim 4, characterized in that: The upper support (402) has two symmetrically arranged driven gears (404) rotatably connected on both sides. The driven gears (404) are fixedly connected to the rotating shaft inside the conveyor belt assembly (405). The outer side of the conveyor belt assembly (302) is rotatably connected to a drive gear (304). A transmission gear (305) meshes with one side of the drive gear (304). The transmission gear (305) is rotatably connected to the conveyor belt assembly (302). The transmission gear (305) can mesh with the driven gears (404). The drive gear (304) is fixedly connected to the rotating shaft inside the conveyor belt assembly (302).

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