Plate production cutting device

Abstract

The utility model belongs to the technical field of plate production cutting, and particularly relates to a plate production cutting device which comprises a cutting table, sliding grooves are formed in the two side walls of the cutting table respectively, lifting plates are arranged on the two sliding grooves in a matched mode, supporting plates are fixedly connected to the two inner side walls of the cutting table respectively, and first pneumatic cylinders are installed on the two supporting plates respectively. In the cutting process, after the cutting knife is abraded, in order to replace the cutting knife in time, the rotation mechanism is arranged, after the cutting knife is abraded or damaged, the abraded cutting knife can be rapidly and timely replaced, it is ensured that a sharp knife is used all the time in the cutting operation, and therefore the flatness and precision of a cutting face are kept; the cutting quality is guaranteed, the overall production efficiency and the product quality are improved, the cutting speed and the cutting capacity can be recovered by rapidly replacing the cutter, the phenomenon of frequent cutter clamping or cutter stopping in the cutting process is avoided, a production line can continuously and stably operate, and the cutting efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the plate production cutting technical field, concretely is a plate production cutting device. BACKGROUND

[0002] The plate has great size after producing, and different size and shape plate is needed in actual application, therefore, the plate needs to be cut, and the plate size is adjusted to obtain various size and shape plate meeting design requirement, thereby satisfying the demand of different fields such as building, furniture manufacturing, decoration.

[0003] The existing plate cutting device is mainly composed of cutting table, limiting plate, motor and cutting knife, when cutting the plate, the plate is placed on the cutting table, the position of limiting plate is adjusted according to the cutting width of the plate to ensure that the subsequent plate moves and cuts stably, then the motor is started to make the cutting knife rotate, when the plate pushes through the cutting knife, the cutting of the plate is completed.

[0004] The existing plate cutting device is complex and cumbersome when replacing the cutting knife, and the cutting knife is inconvenient to replace, when the cutting knife is worn or damaged, if it cannot be replaced promptly, the worn cutting knife can cause uneven cutting, burr, increased gap and other problems, which seriously affect the cutting quality, the cutting ability of the cutting knife will be greatly reduced after wearing, and the damaged cutting knife can cause frequent knife jamming or stopping phenomenon in the cutting process, further reducing the cutting efficiency, therefore, the plate production cutting device is provided for the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the deficiency of the prior art, solve the problem proposed in the background art, the utility model provides a plate production cutting device.

[0006] The utility model discloses a technical scheme that solves its technical problems is: The utility model discloses a kind of plate production cutting device, including cutting table, the both sides wall of cutting table is all set with sliding slot, two sliding slots are cooperatively provided with lifting plate, the both inner side walls of cutting table are all fixed with support plate, first pneumatic cylinder is installed on two support plates, the acting end of two first pneumatic cylinders is all equipped with first pneumatic rod, and the bottom end of first pneumatic rod is fixedly connected on lifting plate, mounting seat is fixedly connected on lifting plate, rotating wheel is cooperatively installed in mounting seat by rotating shaft, motor is installed on the side wall of mounting seat, the output end of motor is connected with one end of rotating shaft, four fixed seats are installed on the outer surface of rotating wheel, cutting knife is cooperatively installed in each fixed seat by rotating shaft, motor is installed on the side wall of each fixed seat, the output end of motor is connected with one end of rotating shaft, plug hole is set up on each fixed seat, and the same plug hole is also set up on mounting seat, two plug holes on the same horizontal plane are cooperatively inserted with positioning plug rod, cutting groove is set up in the top side of cutting table, and the cutting knife is set in cutting groove, in cutting process, when cutting knife wears, in order to replace cutting knife in time, by setting rotation mechanism, first pneumatic cylinder is used to make first pneumatic rod drive lifting plate to move down along sliding slot, and then cutting knife also moves down, until cutting knife moves down to the inside of cutting table, first pneumatic cylinder stops work, then motor is started, and rotating wheel drives fixed seat and cutting knife to rotate, until the new cutting knife that is replaced rotates and moves to the uppermost, motor stops work, then positioning plug rod is inserted into plug hole, and fixed seat is further fixed, so that it can ensure that new cutting knife can keep stable during cutting, then first pneumatic cylinder is started again, and lifting plate drives cutting knife to move up to initial cutting position, by setting rotation mechanism, when cutting knife wears or is damaged, the worn cutting knife can be quickly and timely replaced, ensure that cutting operation always uses sharp cutter, so as to maintain the flatness and precision of cutting surface, ensure cutting quality, improve overall production efficiency and product quality, quickly replace cutting knife can restore cutting speed and cutting capacity, avoid frequent knife jamming or stopping phenomenon during cutting, so that production line can continuously and stably run, greatly improve cutting efficiency.

[0007] Preferably, the top side of the cutting table is provided with two limiting grooves, two limiting blocks are arranged in the two limiting grooves, the top ends of the two limiting blocks are fixedly connected with a limiting plate, a fixed plate is arranged on the cutting table, a second pneumatic cylinder is arranged on the fixed plate, a second pneumatic rod is arranged on the acting end of the second pneumatic cylinder, the other end of the second pneumatic rod is fixedly connected with the limiting plate, a pointer is arranged on one side wall of the limiting plate, a limiting rod groove is arranged on the top side of the cutting table, a limiting sliding rod is arranged in the limiting rod groove, and the top end of the limiting sliding rod is fixedly connected with the pointer, a scale mark is arranged on the cutting table, before cutting, the position of the limiting plate needs to be adjusted according to the cutting width of the plate, the second pneumatic cylinder is operated, the second pneumatic rod pushes the limiting plate to stably move under the cooperation of the limiting groove and the limiting block, when the limiting plate moves, the pointer also moves synchronously, the scale mark is marked, and after the limiting plate moves to a distance between the cutting knife that meets the cutting width requirement, the second pneumatic cylinder stops operating. After the position of the limiting plate is adjusted, when cutting, one side wall of the plate abuts against the limiting plate, and when the plate stably moves through the cutting knife along the limiting plate, the cutting of the plate is completed. By adjusting the position of the limiting plate, the accuracy of the cutting width can be ensured, the plate can stably move along the established path, the shaking and deviation in the cutting process are reduced, and the cutting effect and efficiency are further improved.

[0008] Preferably, a scrap collecting box is arranged on the outer side wall of the cutting table, a dust collection cover is fixedly connected with the limiting plate, a hose channel is fixedly connected between the scrap collecting box and the dust collection cover, a limiting sleeve is fixedly connected with the outer wall of the second pneumatic cylinder, the hose channel passes through the limiting sleeve, a negative pressure pump is arranged on the scrap collecting box, an air suction pipe is connected with the input hole of the negative pressure pump, the other end of the air suction pipe is arranged in the scrap collecting box, and an exhaust pipe is connected with the output hole of the negative pressure pump. A large amount of scraps are generated in the plate cutting process. By arranging the dust collection mechanism, starting the negative pressure pump, making the gas in the scrap collecting box extracted through the air suction pipe and discharged through the exhaust pipe, and making the inside of the scrap collecting box in a negative pressure state, the large amount of scraps generated in the cutting process can be sucked into the dust collection cover and then sucked into the scrap collecting box through the hose channel, so that the scraps generated in the cutting process can be cleaned and collected in time, the working area is kept clean, and the environmental pollution is reduced.

[0009] Preferably, a filter screen is arranged on the inner wall of the scrap collecting box and surrounds the port of the air suction pipe. When the device is used, the filter screen can prevent the port of the air suction pipe from being blocked, and ensures the normal operation of the subsequent integration.

[0010] Preferably, the side wall of the scrap collecting box is provided with a sorting port, the two sides of the port are fixedly connected with limiting sliding rails, and the two limiting sliding rails are slidably connected with a sealing cover plate.

[0011] The utility model discloses the beneficial effect lies in:

[0012] 1. The utility model discloses a cutting process, when cutting knife wears, in order to replace cutting knife in time, through setting rotation mechanism, first through first pneumatic cylinder, make first pneumatic link drive lifting plate move down along with slide groove, further make cutting knife also move down, until cutting knife moves down to cutting table inside, first pneumatic cylinder stops work, then start motor, make rotary wheel drive fixed seat and cutting knife rotate, until the new cutting knife that replaces rotates and moves to the uppermost, motor stops work, then inserts the positioning plug rod into the insertion hole, and the fixed seat is further fixed, so that the new cutting knife can keep stable in the cutting process, through setting rotation mechanism, when cutting knife wears or is damaged, can rapidly and timely replace the cutting knife that wears, ensure that cutting operation always uses sharp cutter, thereby keeping the flatness and precision of cutting surface, guarantee cutting quality, improve overall production efficiency and product quality, rapidly replace cutting knife can restore cutting speed and cutting capacity, avoid frequent cutting process card or stop knife phenomenon, make production line can continue stable operation, greatly improve cutting efficiency;

[0013] 2. The utility model discloses before cutting, need according to the cutting width of board material to adjust the position of limit board, through second pneumatic cylinder work, under the cooperation of limit groove and limit block, make second pneumatic link push limit board stable and move, limit board moves simultaneously, and pointer also moves synchronously, to mark scale line, until limit board moves to the distance between cutting knife and satisfy cutting width requirement, second pneumatic cylinder stops work, after the position adjustment of limit board, when cutting, the one side wall of board material and limit board are in abutment, when board plate moves along limit board and stably passes cutting knife, thereby completed to board material's cutting, through adjusting the position of limit board, not only can ensure the accuracy of cutting width, also make board material can along the stable movement of established path, reduce the shake and deviation in cutting process, further improve cutting effect and efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, below will to the drawing needed to use in the embodiment or prior art description simple introduction, obviously, below description in the drawing only some embodiments of the utility model, for those skilled in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0015] Figure 1 Fig. 1 is a schematic view of the overall top perspective structure of the device;

[0016] Figure 2 Fig. 2 is a schematic view of the overall side perspective structure of the device;

[0017] Figure 3 Fig. 3 is a schematic view of the partial perspective structure of the device;

[0018] Figure 4 Fig. 4 is a schematic view of the perspective structure of the rotation mechanism;

[0019] Figure 5 Fig. 5 is a schematic view of the perspective structure of the dust collecting mechanism.

[0020] In the figure: 1, cutting table; 2, chute; 3, lifting plate; 4, support plate; 5, first pneumatic cylinder; 6, first pneumatic rod; 8, mounting seat; 9, rotating wheel; 10, motor; 11, fixed seat; 12, cutting knife; 13, motor; 14, insertion hole; 15, positioning insertion rod; 16, cutting groove; 17, limiting groove; 18, limiting block; 19, limiting plate; 20, fixed plate; 21, second pneumatic cylinder; 22, second pneumatic rod; 23, pointer; 24, limiting rod groove; 25, limiting sliding rod; 26, scale mark; 27, dust cover; 28, debris collection box; 29, hose channel; 30, limiting sleeve; 31, negative pressure pump; 32, air suction pipe; 33, exhaust pipe; 34, limiting sliding rail; 35, sealing cover plate; 36, filter screen. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] Please refer to Figures 1-4As shown, a plate production cutting device, including cutting table 1, both sides of cutting table 1 are provided with sliding groove 2, two sliding grooves 2 are provided with lifting plate 3 in cooperation, both inner sides of cutting table 1 are fixedly connected with support plate 4, first pneumatic cylinder 5 is installed on two support plates 4, the acting end of two first pneumatic cylinders 5 is equipped with first pneumatic rod 6, and the bottom end of first pneumatic rod 6 is fixedly connected on lifting plate 3, mounting seat 8 is fixedly connected on lifting plate 3, rotating wheel 9 is installed in mounting seat 8 through rotating shaft cooperation, electric motor 10 is installed on one side wall of mounting seat 8, the output end of electric motor 10 is connected with one end of rotating shaft, four fixing bases 11 are installed on the outer surface of rotating wheel 9, cutting knife 12 is installed in each fixing base 11 through rotating shaft cooperation, motor 13 is installed on one side wall of each fixing base 11, the output end of motor 13 is connected with one end of rotating shaft, plug hole 14 is formed on each fixing base 11, and the same plug hole 14 is also formed on mounting seat 8, positioning plug rod 15 is inserted into two plug holes 14 on the same horizontal plane in cooperation, cutting groove 16 is formed on the top side of cutting table 1, and cutting knife 12 is arranged in cutting groove 16; during cutting, when cutting knife 12 is worn, in order to replace cutting knife 12 in time, by setting rotation mechanism, first, through first pneumatic cylinder 5, first pneumatic rod 6 drives lifting plate 3 to move downward along sliding groove 2, and then cutting knife 12 also moves downward, until cutting knife 12 moves to the inside of cutting table 1, first pneumatic cylinder 5 stops working, then electric motor 10 is started, rotating wheel 9 drives fixing base 11 and cutting knife 12 to rotate, until the new cutting knife 12 to be replaced is rotated to the uppermost position, electric motor 10 stops working, then positioning plug rod 15 is inserted into plug hole 14, fixing base 11 is further fixed, so that the new cutting knife 12 can keep stable during cutting, then first pneumatic cylinder 5 is started again, lifting plate 3 drives cutting knife 12 to move upward to the initial cutting position, by setting rotation mechanism, when cutting knife 12 is worn or damaged, the worn cutting knife 12 can be quickly and timely replaced, ensuring that sharp cutters are used during cutting, so as to maintain the flatness and precision of the cutting surface, ensure the cutting quality, improve the overall production efficiency and product quality, quickly replacing cutting knife 12 can restore the cutting speed and cutting capacity, avoid frequent knife jamming or stopping during cutting, so that the production line can continuously and stably run, greatly improving the cutting efficiency.

[0023] Please refer to Figures 1-2As shown, the top side of the cutting table 1 is provided with two limiting grooves 17, and a limiting block 18 is arranged in each limiting groove 17. The top end of the two limiting blocks 18 is fixedly connected with a limiting plate 19. A fixed plate 20 is arranged on the cutting table 1. A second pneumatic cylinder 21 is arranged on the fixed plate 20. A second pneumatic rod 22 is assembled at the acting end of the second pneumatic cylinder 21. The other end of the second pneumatic rod 22 is fixedly connected with the limiting plate 19. A pointer 23 is arranged on one side wall of the limiting plate 19. A limiting rod groove 24 is arranged on the top side of the cutting table 1. A limiting sliding rod 25 is arranged in the limiting rod groove 24. The top end of the limiting sliding rod 25 is fixedly connected with the pointer 23. A scale mark 26 is arranged on the cutting table 1. Before cutting, the position of the limiting plate 19 needs to be adjusted according to the cutting width of the plate. The second pneumatic cylinder 21 is operated. The second pneumatic rod 22 pushes the limiting plate 19 to move stably under the cooperation of the limiting groove 17 and the limiting block 18. When the limiting plate 19 moves, the pointer 23 also moves synchronously. The scale mark 26 is marked. Until the limiting plate 19 moves to a distance between the cutting knife 12 that meets the cutting width requirement, the second pneumatic cylinder 21 stops operating. After the position of the limiting plate 19 is adjusted, during cutting, one side wall of the plate abuts against the limiting plate 19. When the plate moves stably along the limiting plate 19 and passes through the cutting knife 12, the cutting of the plate is completed. By adjusting the position of the limiting plate 19, the accuracy of the cutting width can be ensured, and the plate can move stably along the established path, reducing the shaking and deviation in the cutting process, and further improving the cutting effect and efficiency.

[0024] As shown in Figure 2 and Figure 5 As shown, a scrap collecting box 28 is arranged on the outer side wall of the cutting table 1. A dust collecting hood 27 is fixedly connected with the limiting plate 19. A hose channel 29 is fixedly connected between the scrap collecting box 28 and the dust collecting hood 27. A limiting sleeve 30 is fixedly connected with the outer wall of the second pneumatic cylinder 21. The hose channel 29 passes through the limiting sleeve 30. A negative pressure pump 31 is arranged on the scrap collecting box 28. An air suction pipe 32 is connected with the input hole of the negative pressure pump 31. The other end of the air suction pipe 32 is arranged in the scrap collecting box 28. An exhaust pipe 33 is connected with the output hole of the negative pressure pump 31. A large amount of scrap will be generated during the cutting of the plate. By arranging the dust collecting mechanism, the negative pressure pump 31 is started. The gas in the scrap collecting box 28 is sucked out through the air suction pipe 32 and discharged through the exhaust pipe 33. The inside of the scrap collecting box 28 is in a negative pressure state. Therefore, a large amount of scrap generated during the cutting process can be sucked into the dust collecting hood 27 and then sucked into the scrap collecting box 28 through the hose channel 29. Thus, the scrap generated during the cutting process can be cleaned and collected in time. The working area is kept clean, and the pollution to the environment is reduced.

[0025] The inner wall of the debris collecting box 28 is provided with a filter screen 36, and the filter screen 36 is arranged around the port of the air suction pipe 32; in use of the device, the filter screen 36 can prevent the port of the air suction pipe 32 from being blocked, and ensure the normal performance of subsequent integrated operation.

[0026] A side wall of the debris collecting box 28 is provided with a debris discharge port, and the two sides of the port of the debris discharge port are fixedly connected with limiting slide rails 34, and the two limiting slide rails 34 are slidingly assembled with a sealing cover plate 35; in use of the device, the debris discharge port can facilitate the taking out of the collected debris in the debris collecting box 28.

[0027] Working principle: Since the existing plate cutting device, the replacement steps are more complex and cumbersome when replacing the cutting knife 12, it is not convenient to replace the cutting knife 12, when the cutting knife 12 is worn or damaged, if it cannot be replaced in time, the worn cutting knife 12 will cause uneven cutting, burr, increased gap and other problems, which seriously affects the cutting quality, the cutting ability of the cutting knife 12 will be greatly reduced after wear, and the damaged cutting knife 12 may cause frequent knife sticking or stopping phenomenon in the cutting process, further reducing the cutting efficiency; therefore, aiming at the above problems, a plate production cutting device is proposed; during the cutting process, in order to replace the cutting knife 12 in time when the cutting knife 12 is worn, a rotation mechanism is arranged, first, the first pneumatic cylinder 5 drives the first pneumatic rod 6 to drive the lifting plate 3 to move downward along the sliding groove 2, and then the cutting knife 12 also moves downward, until the cutting knife 12 moves to the inside of the cutting table 1, the first pneumatic cylinder 5 stops working, then the motor 10 is started, the rotating wheel 9 drives the fixed seat 11 and the cutting knife 12 to rotate, until the new cutting knife 12 to be replaced rotates to the uppermost position, the motor 10 stops working, then the positioning rod 15 is inserted into the hole 14, and the fixed seat 11 is further fixed, so that the new cutting knife 12 can keep stable during cutting, then the first pneumatic cylinder 5 is started again, the lifting plate 3 drives the cutting knife 12 to move upward to the initial cutting position, by arranging the rotation mechanism, the worn cutting knife 12 can be replaced in time when the cutting knife 12 is worn or damaged, so as to ensure that sharp cutters are used in cutting operation at all times, thereby maintaining the flatness and precision of the cutting surface, ensuring the cutting quality, improving the overall production efficiency and product quality, replacing the cutting knife 12 quickly can restore the cutting speed and cutting ability, avoid frequent knife sticking or stopping phenomenon in the cutting process, so that the production line can run continuously and stably, greatly improving the cutting efficiency.

[0028] Before cutting, the position of the limiting plate 19 needs to be adjusted according to the cutting width of the plate, and the second pneumatic cylinder 21 is operated, and the second pneumatic rod 22 is pushed to move the limiting plate 19 stably under the cooperation of the limiting groove 17 and the limiting block 18, and the pointer 23 is also moved synchronously while the limiting plate 19 is moving, and the scale line 26 is marked, until the limiting plate 19 is moved to the distance between the cutting knife 12 to meet the cutting width requirement, then the second pneumatic cylinder 21 stops working, and after the position of the limiting plate 19 is adjusted, when cutting, the side wall of the plate is in contact with the limiting plate 19, and when the plate moves stably along the limiting plate 19 and passes through the cutting knife 12, the cutting of the plate is completed, by adjusting the position of the limiting plate 19, not only the accuracy of the cutting width can be ensured, but also the plate can move stably along the established path, the shaking and deviation in the cutting process are reduced, and the cutting effect and efficiency are further improved.

[0029] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0030] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A board production cutting apparatus, characterized by: Including cutting platform (1), the two side walls of cutting platform (1) are provided with sliding groove (2), two sliding grooves (2) are provided with lifting plate (3) in cooperation, the two inner side walls of cutting platform (1) are fixedly connected with support plate (4), first pneumatic cylinder (5) is installed on two support plates (4), the acting end of two first pneumatic cylinders (5) is equipped with first pneumatic rod (6), and the bottom end of first pneumatic rod (6) is fixedly connected on lifting plate (3), mounting seat (8) is fixedly connected on lifting plate (3), rotating wheel (9) is installed in mounting seat (8) by rotary shaft cooperation, motor (10) is installed on the side wall of mounting seat (8), the output end of motor (10) is connected with the one end of rotary shaft, four fixed seats (11) are installed on the outer surface of rotating wheel (9), cutting knife (12) is installed in each fixed seat (11) by rotary shaft cooperation, motor (13) is installed on the side wall of each fixed seat (11), the output end of motor (13) is connected with the one end of rotary shaft, plug hole (14) is formed in each fixed seat (11), and the same plug hole (14) is also formed in mounting seat (8), two plug holes (14) on the same horizontal plane are provided with positioning plug rod (15) in cooperation, cutting groove (16) is formed in the top side of cutting platform (1), and cutting knife (12) is arranged in cutting groove (16).

2. A board production cutting device according to claim 1, characterized in that: Two limiting grooves (17) are formed in the top side of cutting platform (1), limiting block (18) is arranged in two limiting grooves (17), the top end of two limiting blocks (18) is fixedly connected with limiting plate (19) in cooperation, fixed plate (20) is installed on cutting platform (1), second pneumatic cylinder (21) is installed on fixed plate (20), the acting end of second pneumatic cylinder (21) is equipped with second pneumatic rod (22), and the other end of second pneumatic rod (22) is fixedly connected on limiting plate (19).

3. A board production cutting device according to claim 2, characterized in that: Pointer (23) is installed on the side wall of limiting plate (19), limiting rod groove (24) is formed in the top side of cutting platform (1), limiting sliding rod (25) is arranged in limiting rod groove (24), and the top end of limiting sliding rod (25) is fixedly connected on pointer (23), scale mark line (26) is arranged on cutting platform (1).

4. A board production cutting device according to claim 1, characterized in that: Debris collection box (28) is installed on the outer wall of cutting platform (1), dust cover (27) is fixedly connected on limiting plate (19), soft tube channel (29) is fixedly connected between debris collection box (28) and dust cover (27), limiting sleeve (30) is fixedly connected on the outer wall of second pneumatic cylinder (21), and soft tube channel (29) is arranged through limiting sleeve (30).

5. A board production cutting device according to claim 4, characterized in that: The negative pressure pump (31) is installed on the debris collecting box (28), an air suction pipe (32) is connected to the input hole of the negative pressure pump (31), the other end of the air suction pipe (32) is arranged in the debris collecting box (28), an exhaust pipe (33) is connected to the output hole of the negative pressure pump (31), a filter screen (36) is arranged on the inner wall of the debris collecting box (28), and the filter screen (36) surrounds the end of the air suction pipe (32).

6. A board production cutting device according to claim 4, characterized in that: A side wall of the debris collecting box (28) is provided with a debris discharging opening, and the two sides of the end of the debris discharging opening are fixedly connected with limiting sliding rails (34), and the two limiting sliding rails (34) are slidably connected with a sealing cover plate (35).

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