Abrasive belt slitting machine with automatic material taking structure

Abstract

The abrasive belt slitting machine with the automatic material taking structure comprises a workbench, an unwinding assembly and a material receiving assembly are arranged on the two sides of the upper end of the workbench correspondingly, side plates are symmetrically arranged in the middle of the upper end of the workbench, a top cover is arranged on the inner sides of the upper ends of the two side plates, and a slitting monitoring assembly is arranged in the middle of the lower portion of the top cover; a slitting base is arranged below the slitting monitoring assembly, the two sides of the slitting base are sleeved with limiting baffles, the two sides of the lower ends of the limiting baffles are connected with the upper end of the workbench through symmetrically-arranged first electric linear guide rails, meanwhile, a bottom frame is arranged below a dust removal strip hole formed in the middle of the workbench, and a dust suction assembly is arranged in the bottom frame. According to the abrasive belt slitting machine with the automatic material taking structure, the unwinding assembly and the material receiving assembly are arranged to be used in a matched mode, material taking and collecting can be rapidly and continuously conducted on the stripped abrasive belt rolls, manual intervention is not needed, the material taking time is greatly shortened, the overall production efficiency of the abrasive belt slitting machine is improved, and the requirement for large-scale production is met.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of a sand belt processing device, in particular to a sand belt slitting machine with an automatic material taking structure. BACKGROUND

[0002] The sand belt slitting machine is a mechanical device for cutting wide sand belts into required width strips. Its main function is to cut wide sand belt materials into small rolls of different specifications to meet the needs of different applications. It plays a key role in the sand belt production and processing process.

[0003] After a large amount of retrieval, it is found that the typical prior art such as the sand belt slitting machine disclosed in the patent with the publication number CN214445645U includes a rack and a knife roller, one end of the knife roller is rotationally connected with the rack, the sand belt slitting machine includes a rotating roller, an adjusting roller, a first drive for driving the knife roller to rotate and move, and a second drive for driving the rotating roller to rotate, the rotating roller is rotationally connected with the rack, an adjusting device is arranged between the rotating roller and the adjusting roller, the adjusting device includes an adjusting table, a base and a first cylinder, one end of the adjusting table is fixedly connected with the ground, the base is slidably connected with the end of the adjusting table away from the ground, the adjusting roller is rotationally connected with the base, one end of the first cylinder is fixedly connected with the base, and the other end is detachably connected with the end of the adjusting table away from the ground. In the present application, the position between the adjusting roller and the rotating roller is adjusted by the adjusting device, so that the sand belt slitting machine can adapt to different sizes of annular sand belts, and the practicability of the sand belt slitting machine is improved.

[0004] In summary, the existing sand belt slitting machine has the problems that after each cutting of the sand belt, the worker needs to take down the sand belt, the operation is cumbersome, the work efficiency is low, and during the manual material taking process, the operator frequently approaches the running slitting machine, which has certain safety hazards. In view of the above problems, the existing equipment needs to be improved. SUMMARY

[0005] The purpose of the present application is to provide a sand belt slitting machine with an automatic material taking structure to solve the problems of the existing sand belt slitting machine in the prior art, that is, after each cutting of the sand belt, the worker needs to take down the sand belt, the operation is cumbersome, the work efficiency is low, and during the manual material taking process, the operator frequently approaches the running slitting machine, which has certain safety hazards.

[0006] To achieve the above purpose, the present application provides the following technical scheme: a sand belt slitting machine with an automatic material taking structure, comprising a workbench,

[0007] The upper end of the workbench is provided with a pay-off assembly and a material collecting assembly respectively, the material collecting assembly comprises a driving assembly, an electromagnetic rod and a winding drum, the electromagnetic rod is detachably connected to the middle of the driving assembly, a plurality of winding drums are sleeved on the outer side of the electromagnetic rod, the middle of the upper end of the workbench is symmetrically provided with side plates, the inner side of the upper end of the two side plates is provided with a top cover, the top cover is connected with the side plates through a self-locking slide rail below the lower end to form a moving structure, the bottom of the lower end of the top cover is provided with a lighting lamp, the middle below the top cover is provided with a slitting monitoring assembly, and the lower side of the slitting monitoring assembly is provided with a slitting seat, the two sides of the slitting seat are sleeved with limiting baffle plates, the lower end of the limiting baffle plates is connected with the upper end of the workbench through the symmetrically arranged first electric linear guide rails, and the bottom frame below the dust removal strip hole opened in the middle of the workbench is provided with a dust collection assembly, and the bottom of the lower end of the bottom frame is symmetrically provided with a self-locking roller, and the two sides of the bottom frame are connected with the corresponding side edges of the lower end of the workbench through the reinforcing rods.

[0008] Preferably, the pay-off assembly comprises a first mounting frame, a first electric claw disc, a first positioning bearing and a pay-off motor, and the opposite sides of the first mounting frame are symmetrically provided with the first electric claw discs, the outer side of the first electric claw disc is connected with the first mounting frame through the first positioning bearing in the middle, and one of the first electric claw discs is connected with the output end of the pay-off motor.

[0009] Preferably, the driving assembly comprises a second mounting frame, a second electric claw disc, a second positioning bearing and a material collecting motor, and the opposite sides of the second mounting frame are symmetrically provided with the second electric claw discs, the outer side of the second electric claw disc is connected with the second mounting frame through the second positioning bearing in the middle, and one of the second electric claw discs is connected with the output end of the material collecting motor.

[0010] Preferably, a plurality of ventilation strip holes are symmetrically and equidistantly arranged on the two sides of the side plate, and the ventilation strip holes are arranged on the two sides of the slitting monitoring assembly.

[0011] Preferably, the upper end of the top cover is symmetrically provided with an electric telescopic rod, the output end of the electric telescopic rod is connected with the lower end of the lifting plate, the lower end of the lifting plate is symmetrically provided with a moving baffle plate on the side edge, the moving baffle plate penetrates through the top cover and is located between the two side plates below the lower end, and a leveling roller is rotatably connected to the middle of the bottom of the moving baffle plate.

[0012] Preferably, the front of the bottom frame is connected with a protective door through a hinge, and a plurality of exhaust strip holes are equidistantly arranged on the protective door.

[0013] Preferably, the dust suction assembly comprises electric push rods, a mounting plate and a dust guide frame, and the two electric push rods are symmetrically arranged, and the output ends of the two electric push rods are connected to the middle of the lower end side of the mounting plate, the upper end of the mounting plate is arranged in the dust guide frame, the position of the dust guide frame is arranged corresponding to the position of the dust removal strip hole, the filter screen is arranged above the dust suction fan in the middle of the lower end bottom of the dust guide frame, the corrugated pipes are symmetrically arranged on the two sides of the lower end of the dust guide frame, and the lower end of the corrugated pipe is detachably connected with the connecting head arranged corresponding to the upper end of the dust collection bag.

[0014] Preferably, the slitting monitoring assembly comprises a moving seat, a second electric linear guide rail, a mounting rod, a positioning seat, a positioning bolt and a slitting cutter, and the two moving seats are symmetrically arranged, and one side of the two moving seats is connected with the corresponding side plate through the symmetrically arranged second electric linear guide rail, the mounting rod is detachably connected on one side between the two moving seats, the mounting rod is sleeved with a plurality of positioning seats on the outside, and the positioning seat is connected with the mounting rod through the positioning bolt on the top, and the lower end of the positioning seat is connected with the top of the slitting cutter through the positioning screw on the inner side.

[0015] Preferably, the slitting monitoring assembly further comprises a connecting rod, a reset spring and an optical detection assembly, the connecting rod is in T-shaped structure, and a plurality of connecting rods are arranged, the lower end of the connecting rod is connected with the upper end of the corresponding optical detection assembly on one side in the middle through the reset spring and the moving seat, the connecting rod is connected with the output end of the corresponding driving motor through the gear set below the moving seat, and the positions of the connecting rods correspond to the positions of the positioning seats.

[0016] Compared with the prior art, the sand belt slitting machine with the automatic material taking structure has the advantages that,

[0017] (1) In order to solve the problem that the existing sand belt slitting machine needs to be taken down by the staff after each cutting, the operation is complicated, the work efficiency is low, and the operator frequently approaches the running slitting machine during the manual material taking process, which has certain safety hazards, the present application is used in combination with the unwinding assembly and the material collecting assembly, can quickly and continuously take and collect the slitting sand belt roll, does not need manual intervention, greatly shortens the material taking time, improves the overall production efficiency of the sand belt slitting machine, and meets the demand of large-scale production.

[0018] (2) In order to solve the problem that the existing sand belt slitting machine does not collect the dust and debris generated during slitting, which leads to equipment failure and affects processing efficiency, the application is used in combination with the ventilation strip hole, the dust removal strip hole and the dust collection assembly to collect the dust and debris generated during slitting, avoid equipment failure, and also set the electric telescopic rod, the lifting plate, the movable baffle and the leveling roller to form a closed space with the side plate and facilitate leveling of the sand belt raw material, improve the sand belt slitting quality and improve the practicality of use;

[0019] (3) In order to solve the problem that the existing sand belt slitting machine does not monitor the blade wear in real time, only relies on experience to judge the blade wear, which has a lag and a complicated replacement process for damaged blades, affecting processing efficiency, the application is used in combination with the lighting lamp and the slitting monitoring assembly to quantitatively monitor the blade wear in real time and accurately according to the optical detection assembly, discover the blade wear in time, avoid a large number of unqualified products due to excessive blade wear, effectively improve the sand belt slitting quality, reduce the scrap rate, simplify the slitting knife replacement process, and the operator can complete the replacement in a short time without complex tools, greatly shorten the downtime of the slitting machine and improve the production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a front view structural schematic diagram of the application;

[0021] Figure 2 It is a front view structural schematic diagram of the application;

[0022] Figure 3 It is a front view structural schematic diagram of the application; Figure 2 It is an enlarged structural schematic diagram of A in the application;

[0023] Figure 4 It is an enlarged structural schematic diagram of B in the application; Figure 2 It is an enlarged structural schematic diagram of B in the application;

[0024] Figure 5 It is a front view structural schematic diagram of the dust collection assembly of the application;

[0025] Figure 6 It is a rear view structural schematic diagram of the application.

[0026] In the figure: 1, workbench; 101, dust removal strip hole; 2, unwinding assembly; 201, first mounting frame; 202, first electric claw disc; 203, first positioning bearing; 204, unwinding motor; 3, material collecting assembly; 301, second mounting frame; 302, second electric claw disc; 303, second positioning bearing; 304, material collecting motor; 305, electromagnetic rod; 306, winding drum; 4, side plate; 401, ventilation strip hole; 5, top cover; 6, self-locking slide rail; 7, illuminating lamp; 8, electric telescopic rod; 9, lifting plate; 10, movable baffle; 11, leveling roller; 12, slitting seat; 13, limiting baffle; 14, first electric linear guide rail; 15, bottom frame; 1501, protection door; 16, dust suction assembly; 1601, electric push rod; 1602, mounting plate; 1603, dust guide frame; 1604, dust suction fan; 1605, corrugated pipe; 1606, dust collection yarn bag; 17, self-locking roller; 18, reinforcing rod; 19, movable seat; 20, second electric linear guide rail; 21, mounting rod; 22, positioning seat; 23, positioning bolt; 24, slitting cutter; 25, connecting rod; 26, reset spring; 27, optical detection assembly; 28, gear set; 29, driving motor. DETAILED DESCRIPTION

[0027] 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 work fall within the scope of protection of the present application.

[0028] Please refer to Figures 1-6 , the present application provides a technical solution: a sand belt slitting machine with an automatic material taking structure, according to Figure 1 , Figure 2 and Figure 6 , the upper end of the workbench 1 is provided with an unwinding assembly 2 and a material collecting assembly 3 on both sides, respectively, the unwinding assembly 2 comprises a first mounting frame 201, a first electric claw disc 202, a first positioning bearing 203 and an unwinding motor 204, and the first mounting frame 201 is symmetrically provided with the first electric claw disc 202 on one side, and the first electric claw disc 202 is connected with the first mounting frame 201 through the first positioning bearing 203 on the outside, and one of the first electric claw discs 202 is connected with the output end of the unwinding motor 204.

[0029] Further, through the first electric claw disc 202, the two ends of the sand belt raw material can be conveniently grabbed and fixed, and then the first electric claw disc 202 is driven to rotate by the unwinding motor 204, so that the sand belt raw material is rotated and unwound.

[0030] As Figure 1As shown, the material receiving assembly 3 includes a drive assembly, an electromagnetic rod 305 and a winding drum 306, the drive assembly includes a second mounting frame 301, a second electric claw disc 302, a second positioning bearing 303 and a material receiving motor 304, and the second mounting frame 301 is symmetrically provided with the second electric claw disc 302 on opposite sides, and the second electric claw disc 302 is connected with the second mounting frame 301 through the second positioning bearing 303 on the outside, one of the second electric claw discs 302 is connected with the output end of the material receiving motor 304, and the electromagnetic rod 305 is detachably connected in the middle of the drive assembly, a plurality of winding drums 306 are sleeved on the outside of the electromagnetic rod 305, the two ends of the electromagnetic rod 305 are grabbed and fixed through the second electric claw disc 302, then the position of the plurality of winding drums 306 is fixed by energizing the electromagnetic rod 305, and then the material receiving motor 304 is started to drive the second electric claw disc 302, the electromagnetic rod 305 and the winding drum 306 to rotate, so that the winding drum 306 winds the sand belt after the slitting, realizing automatic material taking.

[0031] As shown in Figure 1 , Figure 2 As shown, the workbench 1 is symmetrically provided with side plates 4 in the middle of the upper end, and the upper end of the two side plates 4 is provided with a top cover 5 inside, and the top cover 5 is connected with the side plates 4 through a self-locking slide rail 6 below to form a moving structure, the top cover 5 is moved through the self-locking slide rail 6, which is convenient for overhauling and replacing the equipment between the side plates 4 below the top cover 5, a plurality of ventilation strip holes 401 are symmetrically and equidistantly formed on both sides of the side plates 4, and the ventilation strip holes 401 are arranged on both sides of the slitting monitoring assembly, the internal air flows through the ventilation strip holes 401, so that the generated dust and debris fall under the action of the airflow for collection.

[0032] According to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, the top cover 5 is provided with a lighting lamp 7 at the bottom of the lower end, and the top cover 5 is provided with an electric telescopic rod 8 symmetrically on both sides of the upper end, and the output end of the electric telescopic rod 8 is connected with the lower end of a lifting plate 9, and the lower end of the lifting plate 9 is symmetrically provided with a movable baffle 10 on the side edge, the movable baffle 10 penetrates the top cover 5 at the bottom and is located between the two side plates 4 below, and the movable baffle 10 is rotatably connected with a leveling roller 11 in the middle of the bottom, the lifting plate 9, the movable baffle 10 and the leveling roller 11 are lifted by the electric telescopic rod 8, so that the movable baffle 10 can shield the gap between the two side plates 4 on both sides to form a sealed space, so as to avoid dust and debris generated during slitting from polluting the working environment, and the leveling roller 11 also guides and levels the sand belt raw material, improving the quality during slitting.

[0033] The cutting monitoring assembly is arranged in the middle below the top cover 5, and a slitting seat 12 is arranged below the cutting monitoring assembly, limit baffle plates 13 are sleeved on both sides of the slitting seat 12, the lower ends of the limit baffle plates 13 are connected to the upper end of the workbench 1 through symmetrically arranged first electric linear guides 14, the limit baffle plates 13 are driven to move on the slitting seat 12 through the first electric linear guides 14, the sand belt raw material can be positioned according to the width of the sand belt raw material, and the position deviation during conveying is prevented, so that the cutting quality is affected.

[0034] Further, the cutting monitoring assembly comprises a moving seat 19, a second electric linear guide 20, a mounting rod 21, a positioning seat 22, a positioning bolt 23 and a cutting knife 24, two moving seats 19 are symmetrically arranged, one side of the two moving seats 19 is connected to the corresponding side plate 4 through the symmetrically arranged second electric linear guide 20, a mounting rod 21 is detachably connected to one side between the two moving seats 19, a plurality of positioning seats 22 are sleeved on the outer side of the mounting rod 21, the top of the positioning seat 22 is connected to the mounting rod 21 through the positioning bolt 23, the lower end of the positioning seat 22 is connected to the top of the cutting knife 24 through a positioning screw, the moving seat 19 is driven to move downward through the second electric linear guide 20, so that the cutting edge of the cutting knife 24 is in contact with the sand belt raw material and cuts, when the cutting knife 24 is seriously worn, the cutting knife 24 is separated from the lower end of the positioning seat 22 by rotating the positioning screw, and then the cutting knife 24 is detached, so that the operation is simple and convenient.

[0035] In the above scheme, when the position of the cutting knife 24 needs to be moved, the positioning bolt 23 is separated from the positioning seat 22 and the mounting rod 21 by rotating the positioning bolt 23, so that the positioning seat 22 is conveniently moved, the position of the cutting knife 24 is changed, and the sand belt strips of different sizes are conveniently cut;

[0036] The cutting monitoring assembly further comprises a connecting rod 25, a reset spring 26 and an optical detection assembly 27, the optical detection assembly 27 is prior art, and the connecting rod 25 is a T-shaped structure and is provided with a plurality of

[0037] As shown in Figure 4 the connecting rod 25 penetrates through the reset spring 26, the moving seat 19 and the upper end of the corresponding optical detection assembly 27 on one side of the middle, the connecting rod 25 below the moving seat 19 is connected to the output end of the corresponding driving motor 29 through a gear set 28, the positions of the connecting rod 25 and the positioning seat 22 are one-to-one corresponding, when the moving seat 19 is driven to move downward through the second electric linear guide 20, the bottom of the optical detection assembly 27 is in contact with the surface of the sand belt raw material placed on the slitting seat 12 at the same time and is extruded under stress, so that the connecting rod 25 moves upward at the same time as the reset spring 26 is stretched, so that the optical detection assembly 27 can position the side of the cutting position during cutting, and the cutting accuracy is improved.

[0038] In the above scheme, when it is necessary to monitor the wear degree of the slitting knife 24, the driving motor 29 is started to drive the gear set 28 and the connecting rod 25 to rotate, so that the connecting rod 25 drives the optical detection assembly 27 to rotate below the slitting knife 24. Through the cooperation of the optical detection assembly 27 and the control device, the wear degree of the blade of the slitting knife 24 can be quantitatively monitored in real time, the wear condition of the blade can be found in time, a large number of unqualified products caused by excessive wear of the blade can be avoided, the sand belt slitting quality can be effectively improved, and the scrap rate can be reduced.

[0039] According to Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 and Figure 6 , a bottom frame 15 is arranged below the dust removal strip hole 101 opened in the middle of the workbench 1. The front surface of the bottom frame 15 is connected with a protective door 1501 through a hinge, a plurality of exhaust strip holes are equidistantly arranged on the protective door 1501, a dust suction assembly 16 is arranged in the bottom frame 15, the dust suction assembly 16 comprises electric push rods 1601, a mounting plate 1602 and a dust guide frame 1603, two electric push rods 1601 are symmetrically arranged, and the output ends of the two electric push rods 1601 are connected with the middle of the lower end side of the mounting plate 1602. The electric push rods 1601 drive the mounting plate 1602 to move downward, so that the staff can clean the residual debris in the dust guide frame 1603, and the practicability is improved. The upper end of the mounting plate 1602 is arranged in the dust guide frame 1603, the position of the dust guide frame 1603 corresponds to the position of the dust removal strip hole 101, a filter screen is arranged above a dust suction fan 1604 in the middle of the lower end bottom of the dust guide frame 1603, corrugated pipes 1605 are symmetrically arranged at the lower end of the dust guide frame 1603, and the lower ends of the corrugated pipes 1605 are detachably connected with the corresponding connecting heads of the upper ends of dust collection bags 1606. The dust suction fan 1604 generates suction force, so that the dust and debris generated during slitting are sucked into the dust guide frame 1603 through the dust removal strip hole 101 under the action of the airflow, and then are transported to the dust collection bags 1606 for storage. Self-locking rollers 17 are symmetrically arranged at the lower end bottom of the bottom frame 15, and the bottom frame 15 is connected with the corresponding side edges of the lower end of the workbench 1 through reinforcing rods 18.

[0040] The terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is a simplified description for the convenience of describing the present application, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the protection scope of the present application.

[0041] Although the present application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can be modified, or some of the technical features can be replaced by equivalent features, by those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A sand belt slitting machine with automatic material taking structure, comprising a workbench (1), characterized in that: the upper end of the workbench (1) is provided with a unwinding assembly (2) and a material collecting assembly (3) respectively on both sides, and the material collecting assembly (3) comprises a driving assembly, an electromagnetic rod (305) and a winding drum (306), and the electromagnetic rod (305) is detachably connected in the middle of the driving assembly, a plurality of winding drums (306) are sleeved on the outer side of the electromagnetic rod (305), the upper end of the workbench (1) is symmetrically provided with side plates (4) in the middle, the upper end of the two side plates (4) is provided with a top cover (5) on the inner side, and the top cover (5) is connected with the side plate (4) through a self-locking slide rail (6) at the lower end to form a moving structure, the bottom of the lower end of the top cover (5) is provided with a lighting lamp (7), and a slitting monitoring assembly is arranged in the middle below the top cover (5), and a slitting seat (12) is arranged below the slitting monitoring assembly, limit baffles (13) are sleeved on both sides of the slitting seat (12), and the lower end of the limit baffles (13) is connected with the upper end of the workbench (1) through the first electric linear guide rails (14) arranged symmetrically on both sides, and a bottom frame (15) is arranged below the dust removal strip hole (101) opened in the middle of the workbench (1), a dust suction assembly (16) is arranged in the bottom frame (15), and self-locking rollers (17) are symmetrically arranged on the bottom of the lower end of the bottom frame (15), and the bottom frame (15) is connected with the corresponding side of the lower end of the workbench (1) through the reinforcing rods (18) on both sides.

2. The belt sander with an automatic pick-up structure according to claim 1, characterized in that: The unwinding assembly (2) comprises a first mounting frame (201), a first electric claw disc (202), a first positioning bearing (203) and a unwinding motor (204), and the first electric claw discs (202) are symmetrically arranged on the opposite sides of the first mounting frame (201), and the first electric claw discs (202) are connected with the first mounting frame (201) through the first positioning bearing (203) in the middle of the outer side, and one of the first electric claw discs (202) is connected with the output end of the unwinding motor (204).

3. The belt sander with an automatic pick-up structure according to claim 1, wherein: The driving assembly comprises a second mounting frame (301), a second electric claw disc (302), a second positioning bearing (303) and a material collecting motor (304), and the second electric claw discs (302) are symmetrically arranged on the opposite sides of the second mounting frame (301), and the second electric claw discs (302) are connected with the second mounting frame (301) through the second positioning bearing (303) in the middle of the outer side, and one of the second electric claw discs (302) is connected with the output end of the material collecting motor (304).

4. The belt sander with an automatic pick-up structure according to claim 1, wherein: A plurality of ventilation strip holes (401) are symmetrically and equidistantly arranged on both sides of the side plate (4), and the ventilation strip holes (401) are arranged on both sides of the slitting monitoring assembly.

5. The belt sander with an automatic pick-up structure according to claim 1, wherein: The upper end of the top cover (5) is symmetrically provided with an electric telescopic rod (8) on both sides, and the output end of the electric telescopic rod (8) is connected with the lower end of a lifting plate (9), and the lower end of the lifting plate (9) is symmetrically provided with a moving baffle (10) on the side edge, the moving baffle (10) penetrates through the top cover (5) and is located below the two side plates (4) at the lower end, and a leveling roller (11) is rotatably connected to the middle of the bottom of the moving baffle (10).

6. The belt sander with an automatic pick-up structure according to claim 1, wherein: The front of the bottom frame (15) is connected with a protective door (1501) through a hinge, and a plurality of air exhaust strip holes are equidistantly formed in the protective door (1501).

7. The belt sander with an automatic pick-up structure according to claim 1, wherein: The dust suction assembly (16) comprises electric push rods (1601), a mounting plate (1602) and a dust guide frame (1603), and the two electric push rods (1601) are symmetrically arranged, and the output ends of the two electric push rods (1601) are connected to the middle of the lower side edges of the mounting plate (1602); the upper end of the mounting plate (1602) is arranged in the dust guide frame (1603), and the position of the dust guide frame (1603) corresponds to the position of the dust removal strip hole (101); a filter screen is arranged above the dust suction fan (1604) in the middle of the lower end of the dust guide frame (1603); corrugated pipes (1605) are symmetrically arranged on both sides of the lower end of the dust guide frame (1603), and the lower ends of the corrugated pipes (1605) are detachably connected to the corresponding connecting heads arranged on the upper ends of the dust collection bags (1606).

8. The belt sander with an automatic pick-up structure according to claim 1, wherein: The slitting monitoring assembly comprises mobile seats (19), second electric linear guides (20), mounting rods (21), positioning seats (22), positioning bolts (23) and slitting knives (24), the two mobile seats (19) are symmetrically arranged, and one side of the two mobile seats (19) is connected to the corresponding side plates (4) through the symmetrically arranged second electric linear guides (20); the mounting rod (21) is detachably connected to one side between the two mobile seats (19), a plurality of positioning seats (22) are sleeved on the outer side of the mounting rod (21), and the positioning seats (22) are connected to the mounting rod (21) through the positioning bolts (23) on the top of the positioning seats (22); the lower end of the positioning seat (22) is connected to the top of the slitting knife (24) through the positioning screw.

9. The belt sander with an automatic pick-up structure according to claim 1, wherein: The slitting monitoring assembly further comprises connecting rods (25), return springs (26) and optical detection assemblies (27), the connecting rods (25) are T-shaped structures, and a plurality of connecting rods (25) are arranged; the lower end of the connecting rod (25) penetrates the return spring (26), the mobile seat (19) and the upper end of the corresponding optical detection assembly (27) on one side of the middle, the connecting rod (25) below the mobile seat (19) is connected to the output end of the corresponding driving motor (29) through the gear set (28), and the positions of the connecting rods (25) correspond to the positions of the positioning seats (22).

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