V-CUT knife for electronic circuit board

Abstract

The utility model relates to the technical field of circuit board processing, in particular to a V-CUT cutter for an electronic circuit board, which can automatically clean cutting chips on the surface of the circuit board when cutting the circuit board, is convenient to use, reduces the labor intensity and has high practicability. Comprising a baseplate; the cutting device further comprises a moving mechanism, a clamping mechanism, a lifting mechanism, a cutting mechanism and a cleaning mechanism, the cutting mechanism is installed on the lifting mechanism, the lifting mechanism is used for lifting the cutting mechanism, the clamping mechanism is installed on the moving mechanism, the moving mechanism is used for moving the clamping mechanism, and the clamping mechanism has a clamping and fixing function; the cutting mechanism is located above the clamping mechanism, the cleaning mechanism is installed on the bottom plate, and the cleaning mechanism has a cleaning function.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board processing, in particular to a V-CUT knife for electronic circuit boards. Background Art

[0002] A V-CUT knife is a device used to cut grooves on circuit boards. When processing a circuit board, it cuts a V-shaped groove on the circuit board. After that, the staff can gently bend the circuit board to break the circuit board along the V-shaped groove, which facilitates the processing of the circuit board. In the prior art, the utility model patent with patent application number 201820365855.8 discloses a multi-blade V-CUT machine, which is mainly composed of a blade fixing shaft, multiple V-CUT knives and a cutting bed. When processing a circuit board, the circuit board is placed on the cutting bed, and then the multiple V-CUT knives are rotated by the blade fixing shaft. The rotating V-CUT knives can cut a V-shaped groove on the surface of the circuit board. The inventor believes that there are the following problems during use: during the process of cutting the circuit board, the cutting debris generated will also fall onto the surface of the circuit board. After the circuit board is cut, the staff still needs to manually clean the debris on the surface of the circuit board, which is inconvenient to use and has poor practicality. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an electronic circuit board V-CUT knife which can automatically clean the cutting debris on the surface of the circuit board when cutting the circuit board. It is easy to use, reduces labor intensity and has high practicality.

[0004] The utility model discloses an electronic circuit board V-CUT knife, comprising a base plate; a moving mechanism, a clamping mechanism, a lifting mechanism, a cutting mechanism and a cleaning mechanism, wherein the cutting mechanism is mounted on the lifting mechanism, the lifting mechanism is used to lift the cutting mechanism, the clamping mechanism is mounted on the moving mechanism, the moving mechanism is used to move the clamping mechanism, the clamping mechanism has a clamping and fixing function, the cutting mechanism is located above the clamping mechanism, and the cleaning mechanism is mounted on the base plate, and the cleaning mechanism has a cleaning function; when cutting a circuit board, the circuit board is first clamped and fixed by the clamping mechanism, and then the cutting mechanism is lowered by the lifting mechanism to a height suitable for cutting the circuit board, and then the clamping mechanism is driven by the moving mechanism to move the circuit board to the right, and the circuit board contacts the cutting mechanism during the rightward movement, so that the cutting mechanism cuts a strip-shaped V-groove on the circuit board, and the circuit board after cutting continues to move to the right, so that the circuit board moves to the right below the cleaning mechanism, and the cleaning mechanism automatically cleans the cutting debris on the surface of the circuit board; the cutting debris on the surface of the circuit board can be automatically cleaned during the process of cutting the circuit board, is easy to use, reduces labor intensity, and is highly practical.

[0005] Preferably, the moving mechanism includes an electric slide rail A and a sliding plate, the electric slide rail A is installed on the upper end of the base plate, the sliding plate is installed on the electric slide rail A, the electric slide rail A is used to move the sliding plate left and right, and the clamping mechanism is installed on the upper end of the sliding plate; when the circuit board is moved left and right, the electric slide rail A is opened, and the electric slide rail A drives the circuit board to move in the left and right directions through the sliding plate, which facilitates the left and right movement of the circuit board.

[0006] The two clamping blocks are respectively screwed on the front and rear parts of the lead screw, and the two clamping bolts are respectively screwed on the upper ends of the two clamping blocks, and the lower ends of the two clamping bolts are respectively provided with pressure plates, and the lower ends of the two clamping bolts are respectively located on the outer sides of the two sets of clamping blocks; when the circuit board is placed on the upper end of the support plate, the lead screw is rotated to make the two sets of clamping blocks approach each other, thereby driving the two sets of clamping bolts approach each other, so that the front and rear parts of the circuit board are respectively located under the two sets of clamping bolts, and then the two sets of clamping bolts are rotated to make the two sets of clamping bolts descend, thereby driving the pressure plates at the lower ends of the two sets of clamping bolts to descend, so that the two sets of clamping bolts can press the circuit board to the support plate; the stability of the circuit board during the cutting process is improved.

[0007] Preferably, the lifting mechanism includes a lifting frame, a hydraulic cylinder A, a push rod and a sliding rod, the hydraulic cylinder A is fixedly installed on the upper end of the lifting frame, the push rod and the sliding rod are both slidably installed on the lifting frame, the upper end of the push rod is connected to the output end of the hydraulic cylinder A, and the cutting mechanism is fixedly installed on the lower end of the push rod and the sliding rod; the lifting frame is fixedly mounted on the bracket of the workshop; when cutting the circuit board, the hydraulic cylinder A is turned on, and the hydraulic cylinder A adjusts the height of the cutting mechanism through the push rod until the cutting mechanism is adjusted to a height suitable for cutting the circuit board, and then moves the circuit board to the right, so that the circuit board is cut into a V-shaped groove by the cutting mechanism; since it can adjust the height of the cutting mechanism, it can cut V-shaped grooves of different depths according to circuit boards of different thicknesses. It is easy to use and has low limitations.

[0008] Preferably, the cutting mechanism includes a support frame, a motor, a drive shaft, a plurality of V-pit cutters and a plurality of connecting mechanisms. The support frame is fixedly mounted on the lower end of the sliding rod and the push rod, the motor is fixedly mounted on the support frame, the drive shaft is rotatably mounted on the support frame, the input end of the drive shaft is connected to the output end of the motor, and the plurality of V-pit cutters are respectively mounted on the drive shaft through a plurality of connecting mechanisms, and the connecting mechanism is used to connect the V-pit cutters and the drive shaft; when cutting the circuit board, the motor is turned on, and the motor rotates the plurality of V-pit cutters through the drive shaft. When the circuit board passes through the lower part of the plurality of V-pit cutters, the rotated plurality of V-pit cutters cut a V-groove on the upper part of the circuit board. Multiple V-grooves can be cut on the circuit board at the same time, which is easy to use.

[0009] Preferably, the connecting mechanism includes a connecting plate and a fastening bolt, the V-pit knife is provided with a slide groove, the driving shaft is provided with a slide groove, the slide groove on the V-pit knife is slidably connected to the slide rail on the driving shaft, and the driving shaft is provided with multiple internal threaded holes, the connecting plate is fixedly installed on the V-pit knife, and a through hole is provided on the connecting plate, and the fastening bolt passes through the through hole of the connecting plate and is screwed with the internal threaded hole on the driving shaft; when installing multiple V-pit knives, after sliding the multiple V-pit knives on the driving shaft to the specified position, the fastening bolt passes through the connecting plate on the V-pit knife and is screwed with the internal threaded hole at the corresponding position on the driving shaft, thereby fixing the position of the V-pit knife on the driving shaft; since the V-pit knife and the driving shaft are detachably connected, and the V-pit knife can slide on the driving shaft, the spacing of the multiple V-pit knives on the driving shaft can be adjusted, so it can cut V-grooves with different spacings on the circuit board, which is easy to use and highly practical.

[0010] Preferably, the cleaning mechanism includes a fixed frame, a hydraulic cylinder B, a moving rod, an electric slide rail B, a sliding block, a dust suction pipe, a hose and a vacuum cleaner, the fixed frame is fixedly mounted on the bottom plate, the hydraulic cylinder B is fixedly mounted on the upper end of the fixed frame, the moving rod is mounted on the upper part of the fixed frame so as to slide up and down, the upper end of the moving rod is connected to the output end of the hydraulic cylinder B, the electric slide rail B is fixedly mounted on the lower end of the moving rod, the sliding block is mounted on the electric slide rail B, the electric slide rail B is used to move the sliding block back and forth, the dust suction pipe is fixedly mounted on the lower end of the sliding block, and the input end of the dust suction pipe is connected to the vacuum cleaner through a hose; After the cutting of the circuit board is completed, the circuit board is moved to the bottom of the dust suction pipe, and then the hydraulic cylinder B is turned on. The hydraulic cylinder B drives the electric slide B to drive the sliding block and the dust suction pipe to descend through the moving rod, so that the distance between the dust suction pipe and the circuit board is a distance suitable for dust suction. Then the vacuum cleaner is turned on, and the debris on the upper end of the circuit board enters the vacuum cleaner through the dust suction pipe and the hose in sequence. At the same time, the electric slide B is turned on, and the sliding block drives the dust suction pipe to move back and forth. The dust suction pipe can fully suck up the dust on the upper end of the circuit board during the back and forth movement, which facilitates the cleaning of the processing debris on the upper end of the circuit board.

[0011] Compared with the prior art, the beneficial effects of the present invention are: when cutting a circuit board, the cutting debris on the surface of the circuit board can be automatically cleaned, the use is convenient, the labor intensity is reduced, and the practicality is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a first axonometric structural diagram of the present invention;

[0013] Figure 2 This is a second axonometric structural diagram of the present invention;

[0014] Figure 3 It is a structural diagram of the clamping mechanism;

[0015] Figure 4 It is a structural diagram of the cutting mechanism and the lifting mechanism;

[0016] Figure 5 It is a structural diagram of the drive shaft, motor and connecting plate;

[0017] Figure 6 It is a schematic diagram of the structure of the cleaning mechanism;

[0018] Figure 7 It is a schematic diagram of the structure of a vacuum tube, a hose and a vacuum cleaner.

[0019] Markings in the accompanying drawings: 1. Base plate; 2. Electric slide rail A; 3. Sliding plate; 4. Support plate; 5. Lead screw; 6. Clamp block; 7. Clamping bolt; 8. Lifting frame; 9. Hydraulic cylinder A; 10. Push rod; 11. Sliding rod; 12. Support frame; 13. Motor; 14. Drive shaft; 15. V-pit cutter; 16. Connecting plate; 17. Fastening bolt; 18. Fixed frame; 19. Hydraulic cylinder B; 20. Moving rod; 21. Electric slide rail B; 22. Sliding block; 23. Dust suction pipe; 24. Hose; 25. Vacuum cleaner; 26. Circuit board. DETAILED DESCRIPTION

[0020] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0021] Example 1

[0022] like Figures 1 to 7The utility model of the electronic circuit board V-cutter includes a base plate 1, a moving mechanism, a clamping mechanism, a lifting mechanism, a cutting mechanism and a cleaning mechanism. The cutting mechanism is installed on the lifting mechanism, the lifting mechanism is used to lift the cutting mechanism, the clamping mechanism is installed on the moving mechanism, the moving mechanism is used to move the clamping mechanism, the clamping mechanism has a clamping and fixing function, the cutting mechanism is located above the clamping mechanism, the cleaning mechanism is installed on the base plate 1, and the cleaning mechanism has a cleaning function; when cutting the circuit board 26, first clamp the circuit board 26 by the clamping mechanism, then the cutting mechanism is lowered by the lifting mechanism to make the cutting The mechanism descends to a height suitable for cutting the circuit board 26, and then the clamping mechanism drives the circuit board 26 to move to the right through the moving mechanism. The circuit board 26 contacts the cutting mechanism during the rightward movement, so that the cutting mechanism cuts a strip-shaped V-groove on the circuit board 26. The cut circuit board 26 continues to move to the right, so that the circuit board 26 moves to the right below the cleaning mechanism, and the cleaning mechanism automatically cleans the cutting debris on the surface of the circuit board 26. It can automatically clean the cutting debris on the surface of the circuit board 26 during the cutting process of the circuit board 26, is easy to use, reduces labor intensity, and is highly practical.

[0023] like Figure 1 The moving mechanism includes an electric slide rail A2 and a sliding plate 3. The electric slide rail A2 is installed at the upper end of the base plate 1, and the sliding plate 3 is installed on the electric slide rail A2. The electric slide rail A2 is used to move the sliding plate 3 left and right, and the clamping mechanism is installed at the upper end of the sliding plate 3. When the circuit board 26 is moved left and right, the electric slide rail A2 is opened, and the electric slide rail A2 drives the circuit board 26 to move left and right through the sliding plate 3 so that the clamping mechanism can be used to facilitate the left and right movement of the circuit board 26.

[0024] like Figure 1 and Figure 3 The clamping mechanism includes a support plate 4, a lead screw 5, two sets of clamping blocks 6 and two sets of clamping bolts 7. The support plate 4 is fixedly mounted on the upper end of the sliding plate 3, and the lead screw 5 is rotatably mounted on the support plate 4. The front and rear parts of the lead screw 5 are respectively provided with external threads with opposite rotation directions. The two sets of clamping blocks 6 are both slidably mounted on the support plate 4. The two sets of clamping blocks 6 are respectively screwed with the front and rear parts of the lead screw 5. The two sets of clamping bolts 7 are respectively screwed on the upper parts of the two sets of clamping blocks 6. The lower ends of the two sets of clamping bolts 7 are both provided with pressure plates. The lower ends of the two sets of clamping bolts 7 are respectively located on the two sets of clamping blocks 6; when the circuit board 26 is placed on the upper end of the support plate 4, the screw 5 is rotated. The rotating screw 5 brings the two sets of clamping blocks 6 closer to each other, and then drives the two sets of clamping bolts 7 closer to each other, so that the front and rear parts of the circuit board 26 are respectively located under the two sets of clamping bolts 7, and then the two sets of clamping bolts 7 are rotated to make the two sets of clamping bolts 7 descend, and then drive the pressure plates at the lower ends of the two sets of clamping bolts 7 to descend, so that the two sets of clamping bolts 7 can press and fix the circuit board 26 on the support plate 4; the stability of the circuit board 26 during the cutting process is improved.

[0025] like Figure 1 and Figure 4 The lifting mechanism includes a hanging frame 8, a hydraulic cylinder A9, a push rod 10 and a sliding rod 11. The hydraulic cylinder A9 is fixedly mounted on the upper end of the hanging frame 8, and the push rod 10 and the sliding rod 11 are both slidably mounted on the hanging frame 8. The upper end of the push rod 10 is connected to the output end of the hydraulic cylinder A9, and the cutting mechanism is fixedly mounted on the lower ends of the push rod 10 and the sliding rod 11; the hanging frame 8 is fixedly hoisted on the bracket of the workshop; when the circuit board 26 is cut, the hydraulic cylinder A9 is turned on, and the hydraulic cylinder A9 adjusts the height of the cutting mechanism through the push rod 10 until the cutting mechanism is adjusted to a height suitable for cutting the circuit board 26, and then the circuit board 26 is moved to the right so that the circuit board 26 is cut into a V-shaped groove by the cutting mechanism; since it can adjust the height of the cutting mechanism, it can cut V-shaped grooves of different depths according to circuit boards of different thicknesses. It is easy to use and has low limitations.

[0026] like Figure 4 The cutting mechanism includes a support frame 12, a motor 13, a drive shaft 14, a plurality of V-pit cutters 15 and a plurality of connecting mechanisms. The support frame 12 is fixedly mounted on the lower end of the sliding rod 11 and the push rod 10, the motor 13 is fixedly mounted on the support frame 12, and the drive shaft 14 is rotatably mounted on the support frame 12. The input end of the drive shaft 14 is connected to the output end of the motor 13, and the plurality of V-pit cutters 15 are respectively mounted on the drive shaft 14 through a plurality of connecting mechanisms, and the connecting mechanism is used to connect the V-pit cutter 15 and the drive shaft 14; when the circuit board 26 is cut, the motor 13 is turned on, and the motor 13 rotates the plurality of V-pit cutters 15 through the drive shaft 14. When the circuit board 26 passes through the lower part of the plurality of V-pit cutters 15, the rotated plurality of V-pit cutters 15 cut a V-groove on the upper part of the circuit board 26, and multiple V-grooves can be cut on the circuit board 26 at the same time, which is easy to use.

[0027] like Figure 4 and Figure 5, the connecting mechanism includes a connecting plate 16 and a fastening bolt 17, the V-pit knife 15 is provided with a slide groove, the drive shaft 14 is provided with a slide groove, the slide groove on the V-pit knife 15 is connected to the slide rail on the drive shaft 14 for sliding forward and backward, the drive shaft 14 is provided with a plurality of internal threaded holes, the connecting plate 16 is fixedly installed on the V-pit knife 15, the connecting plate 16 is provided with a through hole, the fastening bolt 17 passes through the through hole of the connecting plate 16 and is screwed with the internal threaded hole on the drive shaft 14; when installing multiple V-pit knives 15, place multiple V-pit knives 15 on the drive shaft After sliding to the specified position on the shaft 14, the fastening bolt 17 is passed through the connecting plate 16 on the V-pit knife 15 and screwed into the internal threaded hole at the corresponding position on the drive shaft 14 to fix the position of the V-pit knife 15 on the drive shaft 14; since the V-pit knife 15 and the drive shaft 14 are detachably connected and the V-pit knife 15 can slide on the drive shaft 14, the spacing between the multiple V-pit knives 15 on the drive shaft 14 can be adjusted, so it can cut V-grooves of different spacings on the circuit board, which is easy to use and highly practical.

[0028] like Figure 1 、 Figure 6 and Figure 7 The cleaning mechanism includes a fixed frame 18, a hydraulic cylinder B19, a moving rod 20, an electric slide rail B21, a sliding block 22, a dust suction pipe 23, a hose 24 and a dust collector 25. The fixed frame 18 is fixedly mounted on the base plate 1, the hydraulic cylinder B19 is fixedly mounted on the upper end of the fixed frame 18, the moving rod 20 is mounted on the upper part of the fixed frame 18 for sliding up and down, the upper end of the moving rod 20 is connected to the output end of the hydraulic cylinder B19, the electric slide rail B21 is fixedly mounted on the lower end of the moving rod 20, the sliding block 22 is mounted on the electric slide rail B21, and the electric slide rail B21 is used to move the sliding block 22 back and forth. The dust suction pipe 23 is fixedly mounted on the lower end of the sliding block 22, and the input end of the dust suction pipe 23 is connected to the dust collector 25 through the hose 24. After the cutting of the circuit board 26 is completed, the circuit board 26 is moved to the bottom of the dust suction tube 23, and then the hydraulic cylinder B19 is opened. The hydraulic cylinder B19 drives the electric slide rail B21 to drive the sliding block 22 and the dust suction tube 23 to descend through the moving rod 20, so that the distance between the dust suction tube 23 and the circuit board 26 is a distance suitable for dust suction. Then, the vacuum cleaner 25 is turned on, and the debris on the upper end of the circuit board 26 enters the vacuum cleaner 25 through the dust suction tube 23 and the hose 24 in turn. At the same time, the electric slide rail B21 is turned on, so that the sliding block 22 drives the dust suction tube 23 to move back and forth. The dust suction tube 23 can fully suck up the dust on the upper end of the circuit board 26 during the back and forth movement; this facilitates the cleaning of the processing debris on the upper end of the circuit board 26.

[0029] Example 2

[0030] On the basis of embodiment 1, the clamping mechanism may also adopt flat-nose pliers, which can also achieve the clamping and fixing of the circuit board 26.

[0031] The electric slide rail A2, hanging frame 8, V-cut knife 15 and vacuum cleaner 25 of the electronic circuit board V-CUT knife of the utility model are all purchased on the market. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without the need for technical personnel in this field to make creative labor.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A V-CUT knife for electronic circuit boards, comprising a base plate (1); characterized in that: The invention also includes a moving mechanism, a clamping mechanism, a lifting mechanism, a cutting mechanism and a cleaning mechanism. The cutting mechanism is installed on the lifting mechanism. The lifting mechanism is used to lift and lower the cutting mechanism. The clamping mechanism is installed on the moving mechanism. The moving mechanism is used to move the clamping mechanism. The clamping mechanism has a clamping and fixing function. The cutting mechanism is located above the clamping mechanism. The cleaning mechanism is installed on the bottom plate (1). The cleaning mechanism has a cleaning function.

2. The electronic circuit board V-CUT knife according to claim 1, characterized in that: The moving mechanism comprises an electric slide rail A (2) and a sliding plate (3), wherein the electric slide rail A (2) is mounted on the upper end of the base plate (1), and the sliding plate (3) is mounted on the electric slide rail A (2), the electric slide rail A (2) is used to move the sliding plate (3) left and right, and the clamping mechanism is mounted on the upper end of the sliding plate (3).

3. The electronic circuit board V-CUT knife according to claim 2, characterized in that: The clamping mechanism comprises a support plate (4), a lead screw (5), two groups of clamping blocks (6) and two groups of clamping bolts (7); the support plate (4) is fixedly mounted on the upper end of the sliding plate (3); the lead screw (5) is rotatably mounted on the support plate (4); the front and rear parts of the lead screw (5) are respectively provided with external threads with opposite rotation directions; the two groups of clamping blocks (6) are both slidably mounted on the support plate (4); the two groups of clamping blocks (6) are respectively screwed to the front and rear parts of the lead screw (5); the two groups of clamping bolts (7) are respectively screwed to the upper parts of the two groups of clamping blocks (6); the lower ends of the two groups of clamping bolts (7) are both provided with pressure plates; the lower ends of the two groups of clamping bolts (7) are respectively located on the outsides of the two groups of clamping blocks (6).

4. The electronic circuit board V-CUT knife according to claim 1, characterized in that: The lifting mechanism comprises a hanging frame (8), a hydraulic cylinder A (9), a push rod (10) and a sliding rod (11), wherein the hydraulic cylinder A (9) is fixedly mounted on the upper end of the hanging frame (8), the push rod (10) and the sliding rod (11) are both mounted on the hanging frame (8) so as to slide up and down, the upper end of the push rod (10) is connected to the output end of the hydraulic cylinder A (9), and the cutting mechanism is fixedly mounted on the lower ends of the push rod (10) and the sliding rod (11).

5. The electronic circuit board V-CUT knife according to claim 4, characterized in that: The cutting mechanism comprises a support frame (12), a motor (13), a drive shaft (14), a plurality of V-grooved cutters (15) and a plurality of connecting mechanisms. The support frame (12) is fixedly mounted on the lower ends of the sliding rod (11) and the push rod (10). The motor (13) is fixedly mounted on the support frame (12). The drive shaft (14) is rotatably mounted on the support frame (12). The input end of the drive shaft (14) is connected to the output end of the motor (13). The plurality of V-grooved cutters (15) are respectively mounted on the drive shaft (14) via a plurality of connecting mechanisms. The connecting mechanisms are used to connect the V-grooved cutters (15) and the drive shaft (14).

6. The electronic circuit board V-CUT knife according to claim 5, characterized in that: The connecting mechanism includes a connecting plate (16) and a fastening bolt (17); a slide groove is provided on the V-pit knife (15); a slide groove is provided on the driving shaft (14); the slide groove on the V-pit knife (15) is connected to the slide rail on the driving shaft (14) in a forward and backward sliding manner; a plurality of internal threaded holes are provided on the driving shaft (14); the connecting plate (16) is fixedly mounted on the V-pit knife (15); a through hole is provided on the connecting plate (16); the fastening bolt (17) passes through the through hole of the connecting plate (16) and is screwed to the internal threaded hole on the driving shaft (14).

7. The electronic circuit board V-CUT knife according to claim 1, characterized in that: The cleaning mechanism comprises a fixed frame (18), a hydraulic cylinder B (19), a moving rod (20), an electric slide rail B (21), a sliding block (22), a dust suction pipe (23), a hose (24) and a dust collector (25). The fixed frame (18) is fixedly mounted on the bottom plate (1). The hydraulic cylinder B (19) is fixedly mounted on the upper end of the fixed frame (18). The moving rod (20) is mounted on the upper part of the fixed frame (18) so as to slide up and down. The upper end of the moving rod (20) is connected to the output end of the hydraulic cylinder B (19). The electric slide rail B (21) is fixedly mounted on the lower end of the moving rod (20). The sliding block (22) is mounted on the electric slide rail B (21). The electric slide rail B (21) is used to move the sliding block (22) forward and backward. The dust suction pipe (23) is fixedly mounted on the lower end of the sliding block (22). The input end of the dust suction pipe (23) is connected to the dust collector (25) through the hose (24).

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