PCB feeding mechanism

Abstract

The invention relates to the technical field of circuit board conveying, in particular to a PCB feeding mechanism which comprises a feeding frame and a conveying frame, a feeding belt is arranged on the feeding frame, a feeding belt is arranged on the conveying frame, the PCB feeding mechanism further comprises a turnover mechanism, the turnover mechanism comprises a carrying plate, a driving shaft used for driving is arranged on the carrying plate, and a feeding belt is arranged on the conveying frame. A movable pressing piece used for limiting the position of the PCB is movably installed on the side, close to the driving shaft, of the carrying plate, a material pressing plate used for abutting against the PCB is movably installed on the side, away from the driving shaft, of the carrying plate, and a push plate capable of moving towards the driving shaft and matched with the material pressing plate is elastically installed in the carrying plate. The push plate is used for extruding the material pressing plate to enable the material pressing plate to move so as to be matched with the movable pressing piece to abut against the PCB. According to the invention, the PCBs in the processing process can be protected, the reject ratio is reduced, the PCBs are prevented from inclining and deviating from the feeding belt in the overturning process, the conveying precision is improved, and the PCBs are automatically output in the reciprocating conveying and overturning process of the PCBs.

Description

Technical Field

[0001] The invention relates to the technical field of circuit board conveying, and in particular to a PCB circuit board feeding mechanism. Background Art

[0002] The existing publication number is CN107032100A, which is a circuit board conveying device for LED lamps. The invention provides a circuit board conveying device for LED lamps, which has the advantages of being able to collect fallen LED lamp circuit boards and protect the machine from being damaged. It can collect fallen LED lamp circuit boards, protect the personal safety of workers, reduce production costs, and at the same time reduce the labor intensity of workers.

[0003] However, since there is no gradual loading, a vacuum period will be generated during the conveying process. At the same time, the circuit board is not rotated and flipped during the conveying process, which is time-consuming and labor-intensive. It is also inconvenient to process the circuit board during the conveying process, and the use efficiency is low. For this reason, the invention patent with announcement number CN112278744B discloses a conveying mechanism for PCB circuit boards, which adopts a loading mechanism for gradual loading. At the same time, the circuit board is rotated and flipped during the conveying process, which is convenient for processing the circuit board during the conveying process and improves the conveying efficiency.

[0004] However, in the above-mentioned public documents, when the flip plate drives the PCB board to flip, the PCB board is just placed on the flip plate alone. When the flip plate flips and exceeds 90 degrees, the PCB board is easy to fall onto the conveyor rack, causing the PCB board to collide and be damaged, affecting the processing quality of the product, reducing the qualified rate and increasing the production cost. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a PCB circuit board feeding mechanism, which can effectively solve the problem in the prior art that the PCB board cannot be well protected during flipping during processing, which easily causes damage to the PCB board and reduces the qualified rate.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The present invention provides a PCB circuit board feeding mechanism, comprising a feeding rack and a conveying rack, wherein the feeding rack is provided with a feeding belt, the conveying rack is provided with a feeding belt, and further comprising:

[0008] The flipping mechanism includes a loading plate, a driving shaft for driving is arranged on the loading plate, a movable clamping piece for limiting the position of the PCB board is movably installed on the side of the loading plate close to the driving shaft, a pressing plate for resisting the PCB board is movably installed on the side of the loading plate away from the driving shaft, a push plate that can move toward the driving shaft and cooperate with the pressing plate is elastically installed in the loading plate, and the push plate is used to squeeze the pressing plate to cause it to displace to cooperate with the movable clamping piece to resist the PCB board.

[0009] Furthermore, the driving shaft is rotatably arranged on the feeding rack, and one end of the driving shaft is connected to an external driving device, and the driving device is used to drive the driving shaft to rotate cyclically and reset, wherein the rotation angle of the carrier plate is 180 degrees.

[0010] Furthermore, the movable pressing member is an inverted L-shaped plate, and a counterweight block is provided at the bottom of the movable pressing member. The movable pressing member is provided with a clearance groove for the push plate to pass through, so as to prevent the movable pressing member from interfering with the push plate when sliding on the carrier plate. Support blocks are provided on both sides of the movable pressing member, and the support blocks are used to limit the height of the initial position of the movable pressing member so that the gap between the movable pressing member and the carrier plate just matches the thickness of the PCB board.

[0011] Furthermore, a pushing member is provided on the driving shaft, and a limiting cavity is provided in the loading plate, and the limiting cavity is used to limit the relative rotation angle between the driving shaft and the loading plate, that is, when the driving shaft rotates, it will first drive the pushing member to rotate in the limiting cavity, and at this time, the driving shaft and the loading plate rotate relative to each other. When the pushing member reaches the limit position, the driving shaft cannot rotate relative to the loading plate, thereby driving the loading plate to rotate.

[0012] Furthermore, the thickness of the pushing member gradually increases from the initial end in contact with the driving shaft to the terminal end.

[0013] Furthermore, the push plate is slidably installed in the loading plate, and a baffle is provided on the push plate, and an elastic member 2 is provided between the baffle and the loading plate, and one end of the push plate extends into the limiting cavity and abuts against the drive shaft, and the elastic member 2 is used to always pull the push plate toward the drive shaft.

[0014] Furthermore, a connecting rotating plate is provided between the pressing plate and the loading plate, and two ends of the connecting rotating plate are rotatably connected to the loading plate and the pressing plate respectively. A guide slope cooperating with the pushing plate is provided at the bottom of the pressing plate.

[0015] Furthermore, it also includes a driving gear and a driven gear, wherein the driving gear is arranged on the driving shaft, and the driven gear is arranged on the feeding belt, and the driving gear and the driven gear are meshed and connected.

[0016] Furthermore, the feeding belt is arranged on the conveying frame through a roller, a guide limit groove is provided in the driven gear, a one-way shift block is movably installed on the roller, and an elastic member 1 is provided between the bottom of the one-way shift block and the roller, and the elastic member 1 is used to always push the one-way shift block to extend toward the driven gear.

[0017] Beneficial Effects

[0018] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0019] 1. Through the movable clamping piece movably arranged on the carrier board and the special structure of the movable clamping piece, the PCB board will be clamped by the movable clamping piece after entering the carrier board, and after the PCB board is turned over with the carrier board, the movable clamping piece automatically releases the clamping of the PCB board due to the counterweight block, which is convenient for the output of the PCB board. When the PCB board is turned over, it is ensured that the PCB board will not collide with the equipment, thereby reducing the risk of the PCB board being damaged due to falling on the conveying rack during the turning process of the carrier board due to not being fixed, protecting the PCB board in the processing process and reducing the defective rate;

[0020] Second, through the cooperation between the pusher on the driving shaft and the limit cavity on the carrier plate, before the carrier plate is turned over, the driving shaft and the carrier plate rotate relative to each other first. During the relative rotation, the pusher squeezes the push plate to squeeze the pressing plate. Under the restriction of the connecting rotating plate, the pressing plate is lifted and moved toward the PCB board, and the PCB board is further fixed to prevent the PCB board from tilting and deviating from the feeding belt during the turning process, thereby improving the conveying accuracy;

[0021] 3. When the carrier plate drives the PCB to flip, that is, when the carrier plate rotates clockwise, the active gear drives the driven gear to rotate counterclockwise. At this time, the driven gear will squeeze the one-way block to retract it into the roller, and the driven gear and the roller will slide relative to each other. Therefore, when the carrier plate flips the PCB, it will not drive the feeding belt to move. When the carrier plate is reset, that is, when the carrier plate rotates counterclockwise, the active gear drives the driven gear to rotate clockwise. At this time, the driven gear will not squeeze the one-way block to retract into the roller, thereby limiting the relative rotation of the driven gear and the roller to drive the roller to rotate, thereby moving the feeding belt and automatically outputting the PCB. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the explosion structure of the turning mechanism of the present invention;

[0025] Figure 3 It is a cross-sectional schematic diagram of the turning mechanism of the present invention;

[0026] Figure 4 This is a state change diagram of the flip mechanism of the present invention when clamping a PCB board (front view);

[0027] Figure 5 This is a state change diagram (cross-sectional view) of the flip mechanism of the present invention when clamping a PCB board;

[0028] Figure 6 It is a schematic diagram of the connection between the turning mechanism and the feeding belt of the present invention;

[0029] Figure 7 It is a schematic diagram of the connection between the driven gear and the roller of the present invention.

[0030] Figure numerals: 1. Feed rack; 11. Feed belt; 2. Conveyor rack; 21. Feed belt; 211. Roller; 212. One-way block; 213. Elastic member 1; 3. Flip mechanism; 31. Loading plate; 311. Limiting cavity; 312. Driving shaft; 3121. Driving gear; 3122. Driven gear; 3123. Guide limiting groove; 313. Pushing member; 32. Movable pressing member; 321. Giving groove; 322. Support block; 33. Push plate; 331. Baffle; 332. Elastic member 2; 34. Pressing plate; 35. Connecting rotating plate; 36. Conveyor roller. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0032] The present invention will be further described below in conjunction with the embodiments.

[0033] See attached Figure 1-7A PCB circuit board feeding mechanism includes a feed rack 1 and a conveyor rack 2. The feed rack 1 is used to convey unprocessed PCB boards. The feed rack 1 is provided with a feed belt 11. The feed belt 11 has two groups and is located on the feed rack 1 and at both sides of the PCB board. The conveyor rack 2 is provided with a feeding belt 21. The number of the feeding belts 21 is the same as that of the feeding belts 11 and is also located on both sides of the PCB board. The setting of the feeding belts 11 and the feeding belts 21 can reserve space for other operations on the PCB board while conveying the PCB board. It also includes:

[0034] The flipping mechanism 3 includes a loading plate 31, on which a driving shaft 312 for driving is provided, the driving shaft 312 is rotatably arranged on the feed rack 1, and one end of the driving shaft 312 is connected to an external driving device, the driving device is used to drive the driving shaft 312 to rotate cyclically and reset, wherein the rotation angle of the loading plate 31 is 180 degrees, and a movable clamping member 32 for limiting the position of the PCB board is movably installed on one side of the loading plate 31 close to the driving shaft 312, the movable clamping member 32 can slide vertically on the loading plate 31, that is, the sliding direction of the movable clamping member 32 is perpendicular to the surface of the loading plate 31, wherein the movable clamping member 32 is an inverted L-shaped plate, and a counterweight block is provided at the bottom of the movable clamping member 32, and support blocks 322 are provided on both sides of the movable clamping member 32, and the support blocks 322 are used to limit the initial The height of the position is such that the gap between it and the carrier plate 31 just matches the thickness of the PCB board. In the initial state, the support block 322 supports the movable clamping member 32 so that it has a certain distance from the surface of the carrier plate 31, and the distance is consistent with the thickness of the PCB board. When the PCB board is transported to the carrier plate 31 by the feed belt 11, the PCB board stops until it abuts against the movable clamping member 32, so that one side of the PCB board is clamped by the movable clamping member 32. When the carrier plate 31 is turned over and the PCB board is turned over and contacts with the feed belt 21, the counterweight block on the movable clamping member 32 drops due to gravity, canceling the squeezing of the PCB board and the carrier plate 31 by the movable clamping member 32. Among them, a plurality of groups of conveying rollers 36 are provided on the carrier plate 31. The conveying rollers 36 are used to reduce the friction between the PCB board and the carrier plate 31, thereby reducing the probability of the PCB board being scratched and damaged during transportation.

[0035] In the above technical scheme, through the movable clamping piece 32 movably arranged on the carrier plate 31 and the special structure of the movable clamping piece 32, the PCB board will be clamped by the movable clamping piece 32 after entering the carrier plate 31, and after the PCB board follows the carrier plate 31 to complete the flipping, the movable clamping piece 32 automatically releases the clamping of the PCB board, which is convenient for the output of the PCB board. Therefore, when the PCB board is flipped, the PCB board will not collide with the equipment, thereby reducing the risk of damage to the PCB board due to falling on the conveying rack 2 during the flipping of the carrier plate 31 due to lack of fixation, protecting the PCB board in the processing process, and reducing the defective rate.

[0036] The movable clamping member 32 is provided with a clearance groove 321 for the push plate 33 to pass through, so as to prevent the movable clamping member 32 from interfering with the push plate 33 when sliding on the carrier plate 31. A pressure plate 34 for resisting the PCB board is movably installed on the side of the carrier plate 31 away from the driving shaft 312, and a push plate 33 that can move toward the driving shaft 312 and cooperate with the pressure plate 34 is elastically installed in the carrier plate 31. The pressure plate 34 is squeezed by the movement of the push plate 33, thereby changing the position of the pressure plate 34, so that it cooperates with the movable clamping member 32 to further fix the PCB board. The push plate 33 is slidably installed in the carrier plate 31, and the sliding of the carrier plate 31 The direction is close to and away from the driving shaft 312, that is, the carrier plate 31 will move toward the driving shaft 312 and / or away from the driving shaft 312 when sliding, and a baffle 331 is provided on the push plate 33, and an elastic member 2 332 is provided between the baffle 331 and the carrier plate 31, and one end of the push plate 33 extends into the limiting cavity 311 and presses against the driving shaft 312, and the elastic member 2 332 is used to always pull the push plate 33 toward the driving shaft 312. In the initial state, the push plate 33 will be pulled back by the elastic member 2 332 and press against the driving shaft 312, and the push plate 33 is used to squeeze the pressing plate 34 to cause it to displace to cooperate with the movable clamping member 32 to press against the PCB board.

[0037] Specifically, a pushing member 313 is provided on the driving shaft 312, and a limiting cavity 311 is provided in the carrier plate 31. The limiting cavity 311 is used to limit the relative rotation angle of the driving shaft 312 and the carrier plate 31, that is, when the driving shaft 312 rotates, it will first drive the pushing member 313 to rotate in the limiting cavity 311. At this time, the driving shaft 312 and the carrier plate 31 rotate relative to each other. When the pushing member 313 reaches the limit position, the driving shaft 312 cannot rotate relative to the carrier plate 31, thereby driving the carrier plate 31 to rotate.

[0038] Furthermore, the thickness of the pushing member 313 gradually increases from the initial end in contact with the driving shaft 312 to the terminal end. When the driving shaft 312 rotates clockwise, the pushing member 313 will be driven to rotate first, and when the pushing member 313 is not in contact with the pushing plate 33, the driving shaft 312 and the loading plate 31 will rotate relative to each other. When the pushing member 313 contacts the pushing plate 33, the pushing plate 33 will be squeezed to move toward the pressing plate 34, and as the driving shaft 312 rotates, until the pushing member 313 cannot move in the limiting cavity 311, the pushing member 313 will drive the loading plate 31 to rotate. In this process, the pushing plate 33 extrude and stretch the elastic member 2 332, and at the same time, the pushing plate 33 squeezes the pressing plate 34 to rise. When rising, the pressing plate 34 will move closer to the loading plate 31 and finally resist the PCB board.

[0039] Furthermore, a connecting rotating plate 35 is provided between the pressing plate 34 and the loading plate 31, and the connecting rotating plate 35 is provided with multiple groups. The two ends of the connecting rotating plate 35 are rotatably connected to the loading plate 31 and the pressing plate 34 respectively. A guide slope cooperating with the push plate 33 is provided at the bottom of the pressing plate 34. A torsion spring is provided between the connecting rotating plate 35 and the loading plate 31, and the torsion spring is used to always drive the connecting rotating plate 35 to rotate counterclockwise, that is, to make the top of the connecting rotating plate 35 lower than the loading plate 31. Before the PCB board is flipped over, the PCB board is further fixed by cooperating with the push plate 33 through the push member 313. After the PCB board is flipped over, the driving shaft 312 rotates in the opposite direction and causes the pushing member 313 to disengage from the push plate 33. At this time, under the action of the second elastic member 332, the push plate 33 is pulled to reset, and then the pressing plate 34 is reset to release the fixation of the PCB board. As the driving shaft 312 continues to rotate, the loading plate 31 is reset.

[0040] In the above technical scheme, in order to further fix the PCB board and prevent the PCB board from tilting during the flipping process, before the carrier 31 is flipped, the driving shaft 312 first rotates relative to the carrier 31 through the cooperation of the pushing member 313 on the driving shaft 312 and the limiting cavity 311 on the carrier 31. During the relative rotation, the pushing member 313 squeezes the pushing plate 33 so that it squeezes the pressing plate 34. Under the restriction of the connecting rotating plate 35, the pressing plate 34 is lifted and moved toward the PCB board. Finally, the PCB board is further fixed in the direction of the movable clamping member 32 and the pressing plate 34 to prevent the PCB board from tilting during the flipping process and improve the conveying accuracy.

[0041] It also includes a driving gear 3121 and a driven gear 3122, wherein the driving gear 3121 is arranged on the driving shaft 312, and the driven gear 3122 is arranged on the feeding belt 21, and the driving gear 3121 and the driven gear 3122 are meshed and connected. When the carrier plate 31 flips the PCB board, when the carrier plate 31 is reset and rotates counterclockwise, it drives the roller 211 to rotate clockwise to automatically output the PCB board.

[0042] In addition, the feeding belt 21 is set on the conveying frame 2 through the roller 211, and a guide limit groove 3123 is provided in the driven gear 3122. A one-way block 212 is movably installed on the roller 211, and an elastic member 213 is provided between the bottom of the one-way block 212 and the roller 211. The elastic member 213 is used to always push the one-way block 212 to extend toward the driven gear 3122. The one-way block 212 on the roller 211 cooperates with the guide limit groove 3123 on the driven gear 3122 to realize one-way driving of the driven gear 3122 and the roller 211, thereby preventing the carrier plate 31 from pulling back the PCB board on the feeding belt 21 when turning over.

[0043] In the above technical solution, when the carrier plate 31 drives the PCB to flip, that is, when the carrier plate 31 rotates clockwise, the driving gear 3121 drives the driven gear 3122 to rotate counterclockwise. At this time, the driven gear 3122 squeezes the one-way block 212 to retract it into the roller 211, and the driven gear 3122 and the roller 211 slide relative to each other. Therefore, when the carrier plate 31 flips the PCB, it will not drive the feeding belt 21 to move. When the carrier plate 31 is reset, that is, when the carrier plate 31 rotates counterclockwise, the driving gear 3121 drives the driven gear 3122 to rotate clockwise. At this time, the driven gear 3122 will not squeeze the one-way block 212 to retract it into the roller 211, thereby limiting the relative rotation of the driven gear 3122 and the roller 211, so as to drive the roller 211 to rotate, thereby moving the feeding belt 21 and automatically outputting the PCB.

[0044] Working principle: When processing a PCB board, the PCB board is first conveyed to the carrier board 31 by the feed belt 11 on the feed rack 1. At this time, the PCB board is clamped by the movable clamping member 32 after entering the carrier board 31 through the movable clamping member 32 and the special structure of the movable clamping member 32. After the PCB board is turned over following the carrier board 31, the movable clamping member 32 automatically releases the clamping of the PCB board due to the counterweight block, which facilitates the output of the PCB board, so that when the PCB board is turned over, it is ensured that the PCB board will not The PCB board 31 is not fixed and collides with the equipment to reduce the risk of damage caused by the PCB board falling on the conveyor frame 2 during the flipping of the carrier plate 31, protect the PCB board in the processing process, and reduce the unqualified rate. In order to further fix the PCB board and prevent the PCB board from tilting during the flipping process, before the carrier plate 31 is flipped, the driving shaft 312 is first rotated relative to the carrier plate 31 through the cooperation of the pushing member 313 on the driving shaft 312 and the limiting cavity 311 on the carrier plate 31. During the relative rotation, the pushing member 313 squeezes the pushing plate 33 to make The pressing plate 34 is squeezed by the pressing plate 34, and under the restriction of the connecting rotating plate 35, the pressing plate 34 is lifted and moved toward the PCB board, and finally the PCB board is further fixed in the direction of the movable pressing member 32 and the pressing plate 34 to prevent the PCB board from deflecting during the flipping process, thereby improving the conveying accuracy. In addition, when the carrier plate 31 drives the PCB board to flip, that is, when the carrier plate 31 rotates clockwise, the driving gear 3121 drives the driven gear 3122 to rotate counterclockwise. At this time, the driven gear 3122 squeezes the one-way shift block 212 to retract it into the rotating roller 211, and the driven gear 3121 drives the driven gear 3122 to rotate counterclockwise. The wheel 3122 slides relative to the roller 211, so when the carrier plate 31 turns over the PCB board, the feeding belt 21 will not be driven to move. When the carrier plate 31 is reset, that is, when the carrier plate 31 rotates counterclockwise, the driving gear 3121 drives the driven gear 3122 to rotate clockwise. At this time, the driven gear 3122 will not squeeze the one-way shift block 212 to retract into the roller 211, thereby limiting the relative rotation of the driven gear 3122 and the roller 211, so as to drive the roller 211 to rotate, thereby moving the feeding belt 21 and automatically outputting the PCB board.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A PCB circuit board feeding mechanism, comprising a feeding frame (1) and a conveying frame (2), wherein the feeding frame (1) is provided with a feeding belt (11), and the conveying frame (2) is provided with a feeding belt (21), characterized in that: Also includes: The flip mechanism (3) comprises a loading plate (31), a driving shaft (312) for driving is provided on the loading plate (31), a movable clamping member (32) for limiting the position of a PCB board is movably mounted on a side of the loading plate (31) close to the driving shaft (312), a pressing plate (34) for resisting the PCB board is movably mounted on a side of the loading plate (31) away from the driving shaft (312), a pushing plate (33) capable of moving toward the driving shaft (312) and cooperating with the pressing plate (34) is elastically mounted inside the loading plate (31), the pushing plate (33) being used to press the pressing plate (34) to cause it to move so as to cooperate with the movable clamping member (32) to resist the PCB board.

2. A PCB circuit board feeding mechanism according to claim 1, characterized in that: The driving shaft (312) is rotatably arranged on the feeding rack (1), and one end of the driving shaft (312) is connected to an external driving device, the driving device is used to drive the driving shaft (312) to rotate cyclically and reset, wherein the rotation angle of the loading plate (31) is 180 degrees.

3. A PCB circuit board feeding mechanism according to claim 1, characterized in that: The movable pressing member (32) is an inverted L-shaped plate, and a counterweight block is provided at the bottom of the movable pressing member (32). A clearance groove (321) is provided on the movable pressing member (32) for the push plate (33) to pass through, so as to prevent the movable pressing member (32) from interfering with the push plate (33) when sliding on the loading plate (31). Support blocks (322) are provided on both sides of the movable pressing member (32), and the support blocks (322) are used to limit the height of the initial position of the movable pressing member (32) so that the gap between the movable pressing member (32) and the loading plate (31) just matches the thickness of the PCB board.

4. A PCB circuit board feeding mechanism according to claim 1, characterized in that: The driving shaft (312) is provided with a pushing member (313), and a limiting cavity (311) is provided in the loading plate (31). The limiting cavity (311) is used to limit the angle of relative rotation between the driving shaft (312) and the loading plate (31), that is, when the driving shaft (312) rotates, it will first drive the pushing member (313) to rotate in the limiting cavity (311), at which time the driving shaft (312) and the loading plate (31) rotate relative to each other. When the pushing member (313) reaches the limit position, the driving shaft (312) cannot rotate relative to the loading plate (31), thereby driving the loading plate (31) to rotate.

5. A PCB circuit board feeding mechanism according to claim 4, characterized in that: The thickness of the pushing member (313) gradually increases from the initial end in contact with the driving shaft (312) to the terminal end.

6. A PCB circuit board feeding mechanism according to claim 1, characterized in that: The push plate (33) is slidably installed in the loading plate (31), and a baffle (331) is provided on the push plate (33), a second elastic member (332) is provided between the baffle (331) and the loading plate (31), and one end of the push plate (33) extends into the limiting cavity (311) and abuts against the driving shaft (312), and the second elastic member (332) is used to always pull the push plate (33) toward the driving shaft (312).

7. A PCB circuit board feeding mechanism according to claim 1, characterized in that: A connecting rotating plate (35) is provided between the material pressing plate (34) and the object carrying plate (31), and the two ends of the connecting rotating plate (35) are rotatably connected to the object carrying plate (31) and the material pressing plate (34) respectively. A guide slope cooperating with the push plate (33) is provided at the bottom of the material pressing plate (34).

8. A PCB circuit board feeding mechanism according to claim 1, characterized in that: It also includes a driving gear (3121) and a driven gear (3122), wherein the driving gear (3121) is arranged on the driving shaft (312), and the driven gear (3122) is arranged on the feeding belt (21), and the driving gear (3121) and the driven gear (3122) are meshed and connected.

9. A PCB circuit board feeding mechanism according to claim 8, characterized in that: The feeding belt (21) is arranged on the conveying frame (2) through a roller (211); a guide limit groove (3123) is arranged in the driven gear (3122); a one-way shifting block (212) is movably mounted on the roller (211); and an elastic member (213) is arranged between the bottom of the one-way shifting block (212) and the roller (211); the elastic member (213) is used to always push the one-way shifting block (212) to extend toward the driven gear (3122).

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