A PCB board cutting device

Abstract

The present invention belongs to the technical field of PCB processing, and specifically relates to a PCB board cutting device, which includes a processing body; a plurality of rotating rollers are rotatably connected inside the processing body; a feeding belt is installed outside the rotating rollers; a baffle plate is slidably connected inside the processing body; a spring is fixedly connected between the baffle plate and the side wall of the processing body; the rotation of the feeding belt is driven by a servo motor; the baffle plate is arranged at the end position of the feeding belt; a pushing plate is slidably connected inside the processing body; through the structure design that the baffle plate blocks the PCB board, and then drives the electric push rod to push the pushing plate to descend, and the cutting knife at the bottom of the pushing plate cuts the PCB board, the function of more conveniently and quickly processing the PCB board is realized, and effectively solves the problem in the prior art that only a single PCB board can be cut and processed, resulting in low processing efficiency of the PCB board.

Description

Technical Field

[0001] The present invention belongs to the technical field of PCB processing, and specifically relates to a PCB board cutting device. Background Art

[0002] A PCB board generally refers to a printed circuit board, which is mainly used for the electrical connection of electronic components. Its most obvious advantage is that it greatly reduces wiring and assembly errors, improves the automation level and production labor rate. According to its functions and different components, PCB boards have different names, such as main boards, IC boards, etc. And a PCB board mainly refers to a bare board without components.

[0003] PCBs are the foundation of modern electronic products. Therefore, they require special care and precision during the production and manufacturing process. One of the most critical procedures to consider is the cutting process. To adapt to the usage environment of the circuit board, during the production and processing of PCBs, it is necessary to perform cutting processing on the PCBs.

[0004] During the process of processing PCB boards, it is necessary to cut the burrs on the PCB boards. In the prior art, the common method for cutting PCB boards is to use a laser to trim the burrs on the PCB boards. However, this method requires manual placement of the PCB boards into the cutting machine, and can only cut individual PCB boards, resulting in low efficiency of PCB board cutting processing.

[0005] Therefore, the present invention provides a PCB board cutting device. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A PCB board cutting device of the present invention includes a processing body; a plurality of rotating rollers are rotatably connected inside the processing body; a feeding belt is installed outside the rotating rollers; a baffle is slidably connected inside the processing body; a spring is fixedly connected between the baffle and the side wall of the processing body; the rotation of the feeding belt is driven by a servo motor; the baffle is arranged at the end position of the feeding belt; a pushing plate is slidably connected inside the processing body; an electric push rod is installed on the top of the processing body, and the output end of the electric push rod is fixedly connected to the top of the pushing plate; a contact switch is installed on the side wall of the baffle; a cutting knife is fixedly connected to the bottom of the pushing plate; a fixing block is fixedly connected to the side wall of the baffle; an adsorption magnet is fixedly connected to the top of the fixing block; an adsorption magnet is fixedly connected to the bottom of the pushing plate and is arranged to attract the adsorption magnet fixed on the fixing block; effectively solving the problem in the prior art that only individual PCB boards can be cut, resulting in low processing efficiency of PCB boards.

[0008] Preferably, a filter screen is fixedly connected inside the processing body; the filter screen is arranged at the position corresponding to the bottom of the baffle plate; a closing door is installed on the side wall of the processing body; a collecting drawer is slidably connected inside the processing body; the collecting drawer is arranged at the position corresponding to the end of the filter screen; it reduces the situation that sundries fall into the inside of the collecting drawer along with the PCB, resulting in unclean surface of the PCB board and affecting the use of the PCB board.

[0009] Preferably, a guide plate is rotatably connected inside the processing body through a torsion spring; the guide plate is arranged at the position corresponding to the feeding belt; it can make the cutting effect of the PCB board better.

[0010] Preferably, a first rotating shaft is fixedly connected to the side wall of the rotating roller; a first synchronous pulley is fixedly connected to the first rotating shaft; a second synchronous pulley is rotatably connected inside the processing body; a synchronous belt is connected between the first synchronous pulley and the second synchronous pulley; a second rotating shaft is fixedly connected to the side wall of the second synchronous pulley; a plurality of cleaning brush hairs are fixedly connected to the side wall of the second rotating shaft; it can effectively avoid the situation of blockage of the PCB board.

[0011] Preferably, a fixed magnet block is fixedly connected to the side wall of the collecting drawer; a fixed magnet block is fixedly connected to the side wall of the processing body, and the two fixed magnet blocks are arranged in an attracting manner; it can make the collecting effect of the collecting drawer on the PCB board better.

[0012] Preferably, a positioning block is fixedly connected to the bottom of the collecting drawer; a positioning groove is opened inside the processing body; it can make the collecting drawer placed more stably inside the processing body.

[0013] Preferably, a positioning rod is fixedly connected inside the processing body; a positioning hole is opened inside the pushing plate; it makes the cutting knife better maintain a perpendicular state with the PCB board, so that the cutting effect of the cutting knife on the PCB board can be better.

[0014] Preferably, a plurality of rolling beads are snap-connected inside the filter screen; the rolling beads are arranged at the grid intersections of the filter screen; it can further reduce the friction force between the PCB board and the filter screen.

[0015] Preferably, a ventilation hole is opened inside the pushing plate; the ventilation hole is opened at the position corresponding to the cutting knife; it effectively avoids the situation that the negative pressure adsorbs the PCB board inside the cutting knife.

[0016] Preferably, a plurality of anti-slip convex points are fixedly connected to the surface of the feeding belt; the anti-slip convex points are arranged in a linear array pattern on the surface of the feeding belt; it can make the PCB board placed more stably on the top of the feeding belt.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. For a PCB board cutting device of the present invention, through the structure design that the baffle plate blocks the PCB board, then drives the electric push rod to push the push plate to descend, and cuts the PCB board with the cutting knife at the bottom of the push plate, the function of more conveniently and quickly processing the PCB board is realized, effectively solving the problem in the prior art that only a single PCB board can be cut and processed, resulting in low processing efficiency of the PCB board.

[0019] 2. For a PCB board cutting device of the present invention, through the structure design that during the rotation of the rotating roller, the second rotating shaft is driven to rotate, and then the cleaning brush bristles clean the surface of the PCB board, the function of making the surface of the PCB board cleaner is realized, and at the same time, the situation of the PCB board being blocked on the surface of the filter screen can be effectively avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 is a perspective view of the present invention;

[0022] Figure 2 is a perspective view of the processing body in the present invention;

[0023] Figure 3 is a cross-sectional view of the processing body in the present invention;

[0024] Figure 4 is a perspective view of the push plate in the present invention;

[0025] Figure 5 is a perspective view of the cleaning brush bristles in the present invention;

[0026] Figure 6 is a perspective view of the filter screen in the present invention;

[0027] Figure 7 is a partial structural schematic diagram of the feeding belt in Embodiment 2.

[0028] In the figure: 1. Processing body; 2. Feeding belt; 3. Rotating roller; 4. Baffle plate; 5. Push plate; 6. Cutting knife; 7. Fixed block; 8. Adsorption magnet; 9. Closing door; 10. Filter screen; 11. Collection drawer; 12. Guide plate; 13. First rotating shaft; 14. First synchronous pulley; 15. Second synchronous pulley; 16. Synchronous belt; 17. Second rotating shaft; 18. Cleaning brush bristles; 19. Fixed magnet; 20. Positioning block; 21. Positioning rod; 22. Rolling bead; 23. Ventilation hole; 24. Anti-slip bump. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] In order to make the technical means, creative features, achieved purposes and functions realized by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0030] Embodiment 1

[0031] Such as Figures 1 to 4As shown in the figure, a PCB board cutting device according to an embodiment of the present invention includes a processing body 1; a plurality of rotating rollers 3 are rotatably connected inside the processing body 1; a feeding belt 2 is installed outside the rotating rollers 3; a baffle 4 is slidably connected inside the processing body 1; a spring is fixedly connected between the baffle 4 and the side wall of the processing body 1; the rotation of the feeding belt 2 is driven by a servo motor; the baffle 4 is arranged at the end position of the feeding belt 2; a pushing plate 5 is slidably connected inside the processing body 1; an electric push rod is installed on the top of the processing body 1, and the output end of the electric push rod is fixedly connected to the top of the pushing plate 5; a contact switch is installed on the side wall of the baffle 4, and when the contact switch contacts the PCB board, it will trigger the electric push rod to work; a cutting knife 6 is fixedly connected to the bottom of the pushing plate 5; the cutting knife 6 is arranged corresponding to the shape of the PCB board to be cut; a fixing block 7 is fixedly connected to the side wall of the baffle 4; an adsorption magnet 8 is fixedly connected to the top of the fixing block 7; an adsorption magnet 8 is fixedly connected to the bottom of the pushing plate 5 and is arranged to attract the adsorption magnet 8 fixedly connected to the fixing block 7; during operation, when the PCB board needs to be cut and processed, the PCB board can be placed at the feeding port of the feeding belt 2, and then the servo motor is started to drive the rotating roller 3 to rotate, so that the rotating roller 3 drives the feeding belt 2 to rotate, and the PCB board is pushed towards the position of the baffle 4. When the PCB board moves to the position where it contacts the baffle 4 and contacts the contact switch on the side wall of the baffle 4, the switch will control the servo motor to turn off, and the electric push rod is started, so that the electric push rod pushes the pushing plate 5 to move downward, and then the PCB board is cut by the cutting knife 6. After the cutting knife 6 moves to the end of the electric push rod and contacts the feeding belt 2, the electric push rod will drive the pushing plate 5 to slide upward. When the pushing plate 5 slides upward, it will pull up the baffle 4 through the adsorption of the adsorption magnet 8. When the PCB board is separated from the contact switch, the servo motor will start and push the PCB board down. During the movement of the electric push rod, after reaching the deformation limit of the spring, the spring will block the baffle 4. At this time, when the electric push rod continues to pull the pushing plate 5, the two adsorption magnets 8 will be separated. After the adsorption magnets 8 are separated, the spring pushes the baffle 4 to fall, continues to block the next PCB board, and continues the above cutting operation. By blocking the PCB board with the baffle 4, driving the electric push rod to push the pushing plate 5 to descend, and cutting the PCB board with the cutting knife 6 at the bottom of the pushing plate 5, the function of more conveniently and quickly processing the PCB board is realized, effectively solving the problem in the prior art that only a single PCB board can be cut and processed, resulting in a low processing efficiency of the PCB board.

[0032] As Figure 3As shown, a filter screen 10 is fixedly connected inside the processing body 1; the filter screen 10 is arranged at a position corresponding to the bottom of the baffle 4; a closing door 9 is installed on the side wall of the processing body 1; a collection drawer 11 is slidably connected inside the processing body 1; the collection drawer 11 is arranged at a position corresponding to the end of the filter screen 10; the filter screen 10 is arranged obliquely downward, with the end close to the baffle 4 being the highest and the end close to the collection drawer 11 being the lowest; during operation, after the PCB board is cut, the PCB board will be pushed onto the top of the filter screen 10 and slide towards the inside of the collection drawer 11 through the filter screen 10. During the process of sliding towards the inside of the collection drawer 11, debris and other sundries cut on the surface of the PCB board will leak through the filter screen 10, reducing the situation where sundries follow the PCB board into the inside of the collection drawer 11, resulting in an unclean surface of the PCB board and affecting the use of the PCB board.

[0033] As Figure 3 As shown, a guide plate 12 is rotatably connected inside the processing body 1 through a torsion spring; the guide plate 12 is arranged at a position corresponding to the conveyor belt 2, and the minimum distance between the two guide plates 12 is the same as the width of the PCB board; during operation, during the process of feeding the PCB board towards the baffle 4 through the conveyor belt 2, through the blocking of the guide plate 12, the PCB board can better correspond to the cutting knife 6 during the cutting process, so that the cutting effect of the PCB board can be better.

[0034] As Figure 5 As shown, a first rotating shaft 13 is fixedly connected to the side wall of the rotating roller 3; a first synchronous pulley 14 is fixedly connected to the first rotating shaft 13; a second synchronous pulley 15 is rotatably connected inside the processing body 1; the first synchronous pulley 14 and the second synchronous pulley 15 are connected by a synchronous belt 16; a second rotating shaft 17 is fixedly connected to the side wall of the second synchronous pulley 15; the second rotating shaft 17 is provided on both sides of the second synchronous pulley 15; a plurality of groups of cleaning bristles 18 are fixedly connected to the side wall of the second rotating shaft 17, and the cleaning bristles 18 are arranged in a circumferential array pattern on the side wall of the second rotating shaft 17; during operation, during the rotation of the rotating roller 3, the first synchronous pulley 14 will be driven to rotate through the first rotating shaft 13. During the rotation of the first synchronous pulley 14, the second synchronous pulley 15 will be driven to rotate through the synchronous belt 16, and then the second rotating shaft 17 will be driven to rotate, and the cleaning bristles 18 will clean the sundries on the surface of the PCB board, making the PCB board cleaner. When the filter screen 10 is blocked, the cleaning bristles 18 will also push the PCB board to slide, thereby dredging it, so as to effectively avoid the situation of the PCB board being blocked.

[0035] As Figure 3As shown, a fixed magnet 19 is fixedly connected to the side wall of the collection drawer 11; a fixed magnet 19 is fixedly connected to the side wall of the processing body 1, and the two fixed magnets 19 are arranged to attract each other. During operation, after the collection drawer 11 is inserted into the interior of the processing body 1, the mutual attraction of the two fixed magnets 19 can make the collection drawer 11 more stably placed inside the processing body 1, so that the collection effect of the PCB boards by the collection drawer 11 is better.

[0036] As Figure 2 shown, a positioning block 20 is fixedly connected to the bottom of the collection drawer 11; a positioning groove is formed inside the processing body 1; the positioning block 20 and the positioning groove are arranged in correspondence. During operation, when the collection drawer 11 is inserted into the interior of the processing body 1, the positioning block 20 can be snapped into the interior of the positioning groove, and then through the clamping of the positioning groove on the positioning block 20, the collection drawer 11 can be more stably placed inside the processing body 1.

[0037] As Figure 1 shown, a positioning rod 21 is fixedly connected to the interior of the processing body 1; a positioning hole is formed inside the push plate 5; the positioning hole and the positioning rod 21 are arranged in correspondence. During operation, during the sliding process of the push plate 5, through the limitation of the positioning rod 21 on the positioning hole, the situation of the push plate 5 tilting less during the sliding process can be made, so that the sliding of the push plate 5 is more stable, making the cutting knife 6 better maintain a perpendicular state with the PCB board, and thus the cutting effect of the cutting knife 6 on the PCB board is better.

[0038] As Figure 6 shown, a plurality of rolling beads 22 are snap-connected inside the filter net 10; the rolling beads 22 are arranged at the grid intersections of the filter net 10; the rolling beads 22 can be made of steel. During operation, during the process of the PCB board falling through the filter net 10, the rolling beads 22 lift the PCB board, which can make the contact area between the PCB board and the filter net 10 smaller, so that the friction between the PCB board and the filter net 10 is smaller, making the PCB board less likely to stop on the surface of the filter net 10. At the same time, the rotation of the rolling beads 22 can change the sliding friction between the PCB board and the filter net 10 into rolling friction, thereby further reducing the friction between the PCB board and the filter net 10.

[0039] As Figure 4 shown, a ventilation hole 23 is formed inside the push plate 5; the ventilation hole 23 is formed at a position corresponding to the cutting knife 6. During operation, during the process of the cutting knife 6 cutting the PCB board, by forming the ventilation hole 23 on the surface of the push plate 5, the situation of the negative pressure adsorbing the PCB board inside the cutting knife 6 is effectively avoided.

[0040] Embodiment 2

[0041] As Figure 7 shown, compared with the first comparative example, another implementation manner of the embodiment of the present invention is: a plurality of anti-slip bumps 24 are fixedly connected to the surface of the feeding belt 2; the anti-slip bumps 24 are regularly arranged in a linear array on the surface of the feeding belt 2; the anti-slip bumps 24 can be made of rubber material; during work, when the feeding belt 2 conveys the PCB board, the PCB board is placed on the top of the feeding belt 2. By providing the soft anti-slip bumps 24, the contact area between the PCB board and the feeding belt 2 can be made larger, so that the PCB board can be placed more stably on the top of the feeding belt 2.

[0042] During work, when the PCB board needs to be cut and processed, the PCB board can be placed at the feeding port of the feeding belt 2, and then the servo motor is started to drive the rotating roller 3 to rotate, so that the rotating roller 3 drives the feeding belt 2 to rotate, and the PCB board is pushed to the position of the baffle 4. When the PCB board moves to the position where it contacts the baffle 4 and contacts the contact switch on the side wall of the baffle 4, the switch will control the servo motor to turn off, and the electric push rod is started, so that the electric push rod pushes the push plate 5 to move downward, and then the PCB board is cut by the cutting knife 6. After the cutting knife 6 moves to the position where it contacts the feeding belt 2 at the end of the electric push rod, the electric push rod will drive the push plate 5 to slide upward. When the push plate 5 slides upward, the baffle 4 will be pulled up by the adsorption of the adsorption magnet 8. When the PCB board is separated from the contact switch, the servo motor will be started to push the PCB board down. During the movement of the electric push rod, after reaching the deformation limit of the spring, the spring will block the baffle 4. At this time, when the electric push rod continues to pull the push plate 5, the two adsorption magnets 8 will be separated. After the adsorption magnets 8 are separated, the spring pushes the baffle 4 to fall, continues to block the next PCB board, and continues the above cutting operation. By blocking the PCB board with the baffle 4, driving the electric push rod to push the push plate 5 to descend, and cutting the PCB board with the cutting knife 6 at the bottom of the push plate 5, the function of more conveniently and quickly processing the PCB board is realized, effectively solving the problem in the prior art that only a single PCB board can be cut and processed, resulting in a low processing efficiency of the PCB board.

[0043] After the PCB board is cut, the PCB board will be pushed onto the top of the filter screen 10 and slide into the interior of the collection drawer 11 through the filter screen 10. During the process of sliding into the interior of the collection drawer 11, debris and other sundries cut on the surface of the PCB board will leak through the filter screen 10, reducing the situation that sundries follow the PCB into the interior of the collection drawer 11, resulting in unclean surface of the PCB board and affecting the use of the PCB board.

[0044] During the process of feeding the PCB board to the material blocking plate 4 through the feeding belt 2, due to the blocking of the guiding plate 12, the PCB board can better correspond to the cutting knife 6 during the cutting process, so that the cutting effect of the PCB board can be better.

[0045] During the rotation of the rotating roller 3, the first synchronous wheel 14 will be driven to rotate by the first rotating shaft 13. During the rotation of the first synchronous wheel 14, the second synchronous wheel 15 will be driven to rotate by the synchronous belt 16, and then the second rotating shaft 17 will be driven to rotate. The cleaning brush bristles 18 will clean the debris on the surface of the PCB board, making the PCB board cleaner. When the filter screen 10 is blocked, the cleaning brush bristles 18 will also push the PCB board to slide, thereby dredging it, effectively avoiding the situation of the PCB board being blocked.

[0046] After the collection drawer 11 is installed inside the processing body 1, due to the mutual adsorption of the two fixed magnets 19, the collection drawer 11 can be placed more stably inside the processing body 1, so that the collection effect of the collection drawer 11 on the PCB board is better.

[0047] When the collection drawer 11 is installed inside the processing body 1, the positioning block 20 can be inserted into the positioning groove. Then, through the clamping of the positioning groove on the positioning block 20, the collection drawer 11 can be placed more stably inside the processing body 1.

[0048] During the sliding of the pushing plate 5, due to the limitation of the positioning rod 21 on the positioning hole, the pushing plate 5 is less likely to tilt during the sliding process, so that the sliding of the pushing plate 5 is more stable, making the cutting knife 6 better maintain a perpendicular state with the PCB board, and thus the cutting effect of the cutting knife 6 on the PCB board is better.

[0049] During the process of the PCB board falling through the filter screen 10, the rolling beads 22 lift the PCB board, reducing the contact area between the PCB board and the filter screen 10, so that the friction between the PCB board and the filter screen 10 is smaller, and the PCB board stops less on the surface of the filter screen 10. At the same time, the rotation of the rolling beads 22 changes the sliding friction between the PCB board and the filter screen 10 into rolling friction, further reducing the friction between the PCB board and the filter screen 10.

[0050] During the process of the cutting knife 6 cutting the PCB board, by opening ventilation holes 23 on the surface of the pushing plate 5, the situation of the negative pressure adsorbing the PCB board inside the cutting knife 6 is effectively avoided.

[0051] When the feeding belt 2 conveys the PCB board, the PCB board is placed on the top of the feeding belt 2. By setting soft anti-slip bumps 24, the contact area between the PCB board and the feeding belt 2 can be made larger, so that the PCB board can be placed more stably on the top of the feeding belt 2.

[0052] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A PCB board cutting device, characterized in that: It includes a processing body (1); a plurality of rotating rollers (3) are rotatably connected inside the processing body (1); a feeding belt (2) is installed outside the rotating rollers (3); a baffle plate (4) is slidably connected inside the processing body (1); a spring is fixedly connected between the baffle plate (4) and the side wall of the processing body (1); the rotation of the feeding belt (2) is driven by a servo motor; the baffle plate (4) is arranged at the end position of the feeding belt (2); a pushing plate (5) is slidably connected inside the processing body (1); an electric push rod is installed on the top of the processing body (1), and the output end of the electric push rod is fixedly connected to the top of the pushing plate (5); a contact switch is installed on the side wall of the baffle plate (4); a cutting knife (6) is fixedly connected to the bottom of the pushing plate (5); a fixing block (7) is fixedly connected to the side wall of the baffle plate (4); an adsorption magnet (8) is fixedly connected to the top of the fixing block (7); an adsorption magnet (8) is fixedly connected to the bottom of the pushing plate (5), and is arranged in an attracting state with the adsorption magnet (8) fixedly connected to the fixing block (7).

2. The PCB board cutting device according to claim 1, wherein: A filter screen (10) is fixedly connected inside the processing body (1); the filter screen (10) is arranged at the position corresponding to the bottom of the baffle plate (4); a closing door (9) is installed on the side wall of the processing body (1); a collection drawer (11) is slidably connected inside the processing body (1); the collection drawer (11) is arranged at the position corresponding to the end of the filter screen (10).

3. The PCB board cutting device according to claim 2, characterized in that: A guide plate (12) is rotatably connected inside the processing body (1) through a torsion spring; the guide plate (12) is arranged at the position corresponding to the feeding belt (2).

4. A PCB board cutting device according to claim 1, characterized in that: A first rotating shaft (13) is fixedly connected to the side wall of the rotating roller (3); a first synchronous pulley (14) is fixedly connected to the first rotating shaft (13); a second synchronous pulley (15) is rotatably connected inside the processing body (1); a synchronous belt (16) is connected between the first synchronous pulley (14) and the second synchronous pulley (15); a second rotating shaft (17) is fixedly connected to the side wall of the second synchronous pulley (15); a plurality of cleaning brush hairs (18) are fixedly connected to the side wall of the second rotating shaft (17).

5. The PCB board cutting device according to claim 2, characterized in that: A fixing magnet (19) is fixedly connected to the side wall of the collection drawer (11); a fixing magnet (19) is fixedly connected to the side wall of the processing body (1), and the two fixing magnets (19) are arranged in an attracting state.

6. The PCB board cutting device according to claim 5, wherein: A positioning block (20) is fixedly connected to the bottom of the collection drawer (11); a positioning groove is opened inside the processing body (1).

7. A PCB board cutting device according to claim 6, characterized in that: A positioning rod (21) is fixedly connected inside the processing body (1); a positioning hole is opened inside the pushing plate (5).

8. The PCB board cutting device according to claim 2, characterized in that: A plurality of rolling beads (22) are snap-connected inside the filter screen (10); the rolling beads (22) are arranged at the grid intersections of the filter screen (10).

9. A PCB board cutting device according to claim 7, characterized in that: A ventilation hole (23) is opened inside the pushing plate (5); the ventilation hole (23) is opened at the position corresponding to the cutting knife (6).

10. A PCB board cutting device according to claim 3, characterized in that: A plurality of anti-slip bumps (24) are fixedly connected to the surface of the feeding belt (2); the anti-slip bumps (24) are regularly arranged in a linear array on the surface of the feeding belt (2).

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