Band sawing machine capable of cooling cutting equipment

Abstract

The invention discloses a band sawing machine capable of cooling cutting equipment and relates to the field of band sawing machines, the band sawing machine comprises a base, a supporting table and a power box, a saw blade is installed in the middle of the supporting table, a driving mechanism is installed on the side face of the power box, and the output end of the driving mechanism is connected with a transmission mechanism and a heat dissipation mechanism; the output end of the transmission mechanism is connected with a sliding plate, the bottom end of the sliding plate is connected with an upper clamping plate connected with the saw blade in a clamped mode, and a lower clamping plate is installed on the inner wall of the base and located below the supporting table. The collection fan and the cooling fan connected with the output end of the driving motor rotate to drive air in the power box to flow, so that the air enters through the grooves in the outer side of the protective shell and enters the power box through the air holes, the air flow cools the driving motor, and after entering, the air flow is driven by the collection fan to cool the power box. The air is gathered and flows along the flow guide plate, and finally the air flow is exhausted through the cooling fan, so that the interior of the power box is cooled.

Description

Technical Field

[0001] The invention relates to the field of band sawing machines, in particular to a band sawing machine capable of cooling a cutting device. Background Art

[0002] Band saw is a mechanical device used for cutting materials such as metal, wood, and plastic. Its working principle is to cut with a continuous saw band. Band saws usually have high cutting accuracy and large cutting capacity, and are widely used in mechanical processing, metal processing and other fields. When cutting, the band saw is usually a vertical saw structure, and the saw blade is driven up and down by a motor to cut the material.

[0003] Prior art, such as a Chinese patent, patent number CN211192303U discloses a vertical band saw with a cooling function, comprising a base, a workbench and a cutting device, wherein the workbench is fixedly arranged on the upper surface of the base, the cutting device comprises a frame, a plurality of pulleys and a saw band, each of the pulleys is rotatably arranged on the frame, the saw band is arranged on each pulley, the saw band is provided with a vertical cutting section, the frame is slidably arranged on the base in a horizontal direction, an upper bracket and a lower bracket are respectively arranged on the upper and lower sides of the cutting section, a guide groove penetrating vertically is arranged on the upper bracket and the lower bracket, the shape and size of the guide groove are adapted to the outer periphery of the cutting section, the cutting section is slidably arranged in the guide groove, a cooling component is arranged on the frame, the cooling component comprises a water tank, a water pump, an inlet pipe and a return pipe, a cooling chamber is arranged in the upper bracket, and the water tank, the water pump, the inlet pipe, the cooling chamber and the return pipe are connected in sequence in a ring shape.

[0004] Although the prior art uses water cooling for cooling, the water cooling structure is relatively complex and requires the use of water tanks, water pumps and other structures for additional driving, and the water pipes need to be close to the outside of the cutting component. The structure is complex and inconvenient to use. During the cutting process, a processing table is usually used to support the material. During the cutting process, some impurities will remain on the outside of the saw blade. In the subsequent processing process, the impurities will be blocked between the processing table and the saw blade. When the saw blade moves up and down, the impurities stuck in the table will cause damage to the saw blade. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide a band saw machine capable of cooling the cutting equipment, so as to solve the technical problems of complex heat dissipation structure and easy wear of impurities caused by the saw blade being stuck during cutting.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a band saw machine capable of cooling a cutting device, comprising a base, a cutting table and a power box, a saw blade is installed in the middle position of the cutting table, a driving mechanism is installed on the side of the power box, an output end of the driving mechanism is connected with a transmission mechanism and a heat dissipation mechanism, an output end of the transmission mechanism is connected with a slide plate, the bottom end of the slide plate is connected with an upper clamping plate engaged with the saw blade, a lower clamping plate is installed on the inner wall of the base below the cutting table, the lower clamping plate is engaged with the bottom end of the saw blade, a movable plate is also installed on the base below the lower clamping plate, cleaning mechanisms are installed on both sides of the saw blade of the cutting table, the cleaning mechanism is in contact with the outer wall of the saw blade, and the cleaning mechanism is rotatably connected to the cutting table, a movable plate is also connected to the inner side of the cleaning mechanism, a return spring rod is installed inside the movable plate, the movable plate is movably connected to the cleaning mechanism through the return spring rod, and the movable plate is naturally located below the cleaning mechanism, the movable plate is in contact with the outer wall of the saw blade, and the movable plate moves synchronously with the saw blade moving up and down.

[0007] By adopting the above technical solution, the material can be conveniently cut, and during the cutting process, the saw blade is protected by the movable plate, and the heat dissipation protection is provided to the inside of the power box by the heat dissipation mechanism.

[0008] The present invention is further configured such that the top of the base is connected to a support platform, the power box is located above the support platform, and the side of the support platform located on the power box is also connected to a fixing clip, the fixing clip is sleeved on the outside of the skateboard, and a height adjuster is installed on the side of the fixing clip, and the height adjuster is connected to the fixing clip by threads.

[0009] Preferably, the height of the fixing clamp can be easily adjusted, thereby facilitating the clamping of different saw blades.

[0010] The present invention is further configured such that a screw propeller and a positioning plate are connected to the top of the cutting table, a threaded rod is installed inside the screw propeller, and when the screw propeller rotates, the positioning plate is driven to slide on the cutting table.

[0011] Preferably, the position of the positioning plate can be adjusted to facilitate processing of materials of different specifications.

[0012] The present invention is further configured such that an upper driving tooth and a lower driving tooth are installed on the inner wall of the power box, a first driven wheel is installed inside the upper driving tooth, a second driven wheel is installed inside the lower driving tooth, a transmission rod is installed between the upper driving tooth and the lower driving tooth, the transmission rod is fixedly connected to the side of the skateboard, and the angles of the upper driving tooth and the lower driving tooth are staggered.

[0013] As a preferred embodiment, the saw blade can be conveniently driven to move up and down, thereby cutting the material.

[0014] The present invention is further configured such that a driving motor is installed inside the driving mechanism, and an output end of the driving motor is connected to a first transmission wheel and a second transmission wheel, the first transmission wheel is transmission-connected to a first driven wheel through a transmission belt, and the second transmission wheel is also transmission-connected to a second driven wheel through a transmission belt.

[0015] As a preferred embodiment, it is possible to conveniently drive the upper driving teeth and the lower driving teeth to rotate.

[0016] The present invention is further configured such that the output end of the driving mechanism is connected to a collecting fan and a cooling fan, the collecting fan is fixed to the outer wall of the second driving wheel, and the collecting fan extends to the outside of the second driving wheel, the single-piece shape of the collecting fan is a twisted trapezoid, a guide plate is installed on the outside of the collecting fan, the annular inner wall of the guide plate is aligned with the outside of the cooling fan, a cooling net matching the cooling fan is provided on the outer wall of the power box, a protective shell is also installed on the outside of the driving mechanism, the end of the protective shell is a mesh structure, and the outer wall of the power box is provided with air holes on the inner side of the protective shell.

[0017] Preferably, airflow can enter the interior of the power box to dissipate heat inside the power box.

[0018] The present invention is further configured such that an air injection hole is provided inside the cleaning mechanism and below the scraper plate, and an air injection hole is also provided on the side of the moving plate.

[0019] Preferably, airflow can conveniently enter the interior of the power box.

[0020] The present invention is further configured such that first plug plates are provided on both sides of the lower clamping plate, and the lower clamping plate is slidably connected to the movable plate via the first plug plates.

[0021] Preferably, the lower clamping plate can be fixed and limited by the first plug plate.

[0022] The present invention is further configured as follows: a fixed plate is also installed on the outer side of the movable plate, a positioning spring rod and a second plug plate are connected between the movable plate and the fixed plate, a slot matching the second plug plate is opened on the outer wall of the fixed plate, a one-way valve is installed on the bottom end of the fixed plate, an air guide pipe is connected to the side of the fixed plate, and the air guide pipe extends to the interior of the cutting table and is aligned with the outer wall of the cleaning mechanism, the movable plate moves up and down driven by the lower clamping plate, and the outside air is sucked from the one-way valve into the air cavity composed of the movable plate, the fixed plate and the second plug plate, and the airflow is sent into the air guide pipe by extrusion, and finally the airflow enters the cleaning mechanism.

[0023] Preferably, the airflow can be delivered into the cleaning mechanism through the air duct to clean the impurities attached to the outside of the cleaning mechanism and to dissipate the heat of the movable plate.

[0024] In summary, the present invention mainly has the following beneficial effects: The present invention, through the power box and driving mechanism, can drive the collection fan and the heat dissipation fan connected to the output end of the motor to rotate during use, so as to drive the air flow inside the power box, so that the air enters through the groove on the outside of the protective shell and enters the power box through the air vents. The airflow dissipates the heat of the driving motor. After the airflow enters, it is driven by the collection fan to gather the air and flow along the guide plate, and finally the airflow is discharged through the heat dissipation fan, thereby cooling the inside of the power box.

[0025] The present invention provides a cleaning mechanism, a lower clamping plate and a movable plate, and after cutting the material, the torsion spring rod returns to its position, driving the cleaning mechanism to return to its position, thereby cleaning the saw blade, avoiding impurities remaining on the surface of the saw blade to affect subsequent cutting. During the cutting process of the saw blade, the movable plate moves up and down inside the fixed plate to squeeze the airflow, so that the airflow enters the cleaning mechanism through the air guide tube to clean the inside of the cleaning mechanism. During the cutting process of the saw blade, the cleaning mechanism fits with the saw blade through the movable plate of the side wall. During cutting, the movable plate and the saw blade move up and down synchronously, thereby protecting the saw blade, reducing the wear and heat of the saw blade, and improving the heat dissipation effect of the saw blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the band sawing machine of the present invention; Figure 2 It is a schematic diagram of the internal structure of the power box of the present invention; Figure 3 It is a structural schematic diagram of the driving mechanism of the present invention; Figure 4 It is a schematic diagram of the installation structure of the driving mechanism of the present invention; Figure 5 It is a schematic diagram of the structure of the collecting fan and the heat dissipation fan of the present invention; Figure 6 It is a schematic diagram of the structure of the engagement between the slide plate and the driving gear of the present invention; Figure 7 It is a schematic diagram of the installation structure of the lower clamping plate of the present invention; Figure 8 It is a schematic diagram of the linkage structure between the cleaning mechanism and the lower clamping plate of the present invention; Fig. 9 It is a structural schematic diagram of the lower clamping plate and the movable plate of the present invention; Fig.10 It is a schematic diagram of the internal structure of the cleaning mechanism of the present invention; Fig.11 It is a structural schematic diagram of the movable scraper of the present invention.

[0027] Description of reference numerals: 1. Base; 101. Support table; 2. Cutting table; 201. Screw propeller; 202. Positioning plate; 3. Power box; 301. Heat dissipation net; 302. Support frame; 303. Upper driving gear; 3031. First driven wheel; 304. Lower driving gear; 3401. Second driven wheel; 305. Transmission rod; 306. Protective shell; 307. Air vent; 4. Fixing clip; 401. Height adjuster; 5. Saw blade; 6. Driving mechanism; 601. Driving motor; 602 , first transmission wheel; 603, second transmission wheel; 604, collecting fan; 6041, guide plate; 605, cooling fan; 7, cleaning mechanism; 701, scraper; 702, torsion spring rod; 8, slide plate; 801, upper clamping plate; 9, lower clamping plate; 901, first plug-in plate; 10, movable plate; 1001, fixed plate; 1002, positioning spring rod; 1003, second plug-in plate; 1004, slot; 11, air guide tube; 12, movable plate; 1201, return spring rod. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] The following describes an embodiment of the present invention based on its overall structure. Embodiment 1

[0030] See also Figures 1 to 6A band saw capable of cooling a cutting device comprises a base 1, a cutting table 2 and a power box 3, a saw blade 5 is installed in the middle of the cutting table 2, a driving mechanism 6 is installed on the side of the power box 3, a support frame 302 is installed on the inner side of the power box 3, a control system and a power supply system are installed on the support frame 302, an upper driving tooth 303 and a lower driving tooth 304 are installed on the inner wall of the power box 3, a first driven wheel 3031 is installed inside the upper driving tooth 303, a second driven wheel 3041 is installed inside the lower driving tooth 304, and a transmission rod is installed between the upper driving tooth 303 and the lower driving tooth 304 305, the transmission rod 305 is fixedly connected to the side of the skateboard 8, and the angles of the upper driving teeth 303 and the lower driving teeth 304 are staggered. A driving motor 601 is installed inside the driving mechanism 6, and the output end of the driving motor 601 is connected to the first transmission wheel 602 and the second transmission wheel 603. The first transmission wheel 602 is connected to the first driven wheel 3031 through a conveyor belt, and the second transmission wheel 603 is also connected to the second driven wheel 3041 through a conveyor belt. The transmission rod 305 can be driven to move up and down through the upper driving teeth 303 and the lower driving teeth 304, thereby driving the skateboard 8 to move up and down. The output end of the driving mechanism 6 is connected to a collecting fan 604 and a cooling fan 605. The collecting fan 604 is fixed on the outer wall of the second transmission wheel 603 and extends to the outside of the second transmission wheel 603. The single-piece shape of the collecting fan 604 is a twisted trapezoid. A guide plate 6041 is installed on the outside of the collecting fan 604. The annular inner wall of the guide plate 6041 is aligned with the outside of the cooling fan 605. A cooling net 301 matching the cooling fan 605 is provided on the outer wall of the power box 3. A protective shell 306 is also installed on the outside of the driving mechanism 6. The end of the protective shell 306 is a mesh structure, and the outer wall of the power box 3 is located on the inner side of the protective shell 306. An air vent 307 is provided, which can conveniently dissipate heat inside the power box and improve the heat dissipation effect.

[0031] See also Figure 7 and Figure 8 The bottom end of the slide plate 8 is connected to an upper clamping plate 801 which is engaged with the saw blade 5. The inner wall of the base 1 is located below the cutting table 2 and is provided with a lower clamping plate 9 which is engaged with the bottom end of the saw blade 5. The base 1 is also provided with a movable plate 10 below the lower clamping plate 9 to facilitate limiting the position of the saw blade 5.

[0032] See also Figures 7 to 11, the cutting table 2 is provided with a cleaning mechanism 7 on both sides of the saw blade 5, and the cleaning mechanism 7 is in contact with the outer wall of the saw blade 5, so that the saw blade 5 can be cleaned conveniently during cutting, and impurities can be prevented from being blocked between the saw blade 5 and the cutting table 2, and the cleaning mechanism 7 is rotatably connected to the cutting table 2 through a torsion spring rod 702, and an air injection hole is provided in the interior of the cleaning mechanism 7, and the cleaning mechanism 7 is located below the scraper 701, and an air injection hole is also provided on the side of the movable plate 12, and a fixed plate 1001 is also provided on the outer side of the movable plate 10, a positioning spring rod 1002 and a second plug plate 1003 are connected between the movable plate 10 and the fixed plate 1001, a slot 1004 matching the second plug plate 1003 is provided on the outer wall of the fixed plate 1001, a one-way valve is provided at the bottom end of the fixed plate 1001, and an air guide pipe is connected to the side of the fixed plate 1001 11, and the air guide pipe 11 extends to the interior of the cutting table 2 and is aligned with the outer wall of the cleaning mechanism 7. The movable plate 10 moves up and down driven by the lower clamping plate 9, and the outside air is sucked into the air cavity composed of the movable plate 10, the fixed plate 1001 and the second plug plate 1003 from the one-way valve, and the air flow is sent into the air guide pipe 11 by extrusion, and finally the air flow enters the cleaning mechanism 7, so as to clean the scraper 701 and dissipate the heat of the movable plate 12. A movable plate 12 is also connected to the inner side of the cleaning mechanism 7, and a return spring rod 1201 is installed inside the movable plate 12. The movable plate 12 is movably connected to the cleaning mechanism 7 through the return spring rod 1201, and the movable plate 12 is naturally located below the cleaning mechanism 7. The movable plate 12 fits the outer wall of the saw blade 5. As the saw blade 5 moves up and down, the movable plate 12 also moves synchronously to reduce the wear on the saw blade 5.

[0033] In the above embodiments, please refer to Figure 1 and Figure 2 A support platform 101 is connected to the top of the base 1, and a power box 3 is located above the support platform 101. A fixing clamp 4 is also connected to the side of the support platform 101 located at the power box 3. The fixing clamp 4 is sleeved on the outside of the skateboard 8, and a height adjuster 401 is installed on the side of the fixing clamp 4. The height adjuster 401 is connected to the fixing clamp 4 by threads, which is convenient for clamping different skateboards 8.

[0034] In the above embodiments, please refer to Figure 1 and Figure 2 The top of the cutting table 2 is connected with a screw propeller 201 and a positioning plate 202. A threaded rod is installed inside the screw propeller 201. When the screw propeller 201 rotates, it drives the positioning plate 202 to slide on the cutting table 2, which is convenient for limiting the cutting material.

[0035] In the above embodiments, please refer to Figure 8A first plug plate 901 is provided on both sides of the lower clamping plate 9, and the lower clamping plate 9 is slidably connected to the movable plate 10 through the first plug plate 901, so that the saw blade 5 can be easily installed and disassembled.

[0036] During use, the saw blade 5 needs to be installed first. During the installation process, the bottom of the saw blade 5 is first installed in the lower clamping plate 9, and then the saw blade 5 is inserted into the cutting table 2. The lower clamping plate 9 is inserted into the groove at the top of the movable plate 10 through the first outer plug plate 901, showing the fixation of the lower clamping plate 9. When the top of the saw blade 5 is inserted into the upper clamping plate 801, the top of the saw blade 5 is fixed by bolts, thereby completing the installation of the saw blade 5. When it is necessary to cut the material, the position of the positioning plate 202 is adjusted by the screw pusher 201, so that the positioning plate 202 is moved to a suitable position, the side of the material is fitted with the positioning plate 202, and the material is pushed to move on the cutting table 2. Before cutting, the material will first be released to the outside of the cleaning mechanism 7, and the material will push the cleaning mechanism to tilt and fit into the slot on the cutting table 2. When it contacts the saw blade 5, the driving mechanism 6 is started, and the driving motor 601 in the driving mechanism 6 drives the first transmission wheel 602, the second transmission wheel 603 and each group of fans to rotate. The first transmission wheel 602 and the second transmission wheel 603 synchronously drive the upper driving teeth 303 and the lower driving teeth 304 to rotate. The upper driving teeth 303 and the lower driving teeth 304 are staggered at the upper and lower positions of the transmission rod 305. When the upper driving teeth 303 and the lower driving teeth 304 rotate, the outer protruding teeth will stagger and push the transmission rod 305 to move up and down, thereby The transmission rod 305 is driven to move up and down, and the transmission rod 305 drives the upper clamping plate 801 under the slide plate 8 to move up and down, thereby pulling the saw blade 5 to move up and down to cut the material, and pushing the material to continue cutting the material until the material is cut. At this time, the material is removed from the cutting table 2, and under the action of the torsion spring rod 702, the cleaning mechanism 7 is pushed back. At this time, the cleaning mechanism 7 scrapes and cleans the outer wall of the saw blade 5 through the scraper 701 on the side. When the subsequent material processing is carried out, the material will push the cleaning mechanism 7 to rotate downward to the slot in the cutting table 2 again. At this time, the cleaning mechanism 7 is aligned with the air guide tube 11, and when cutting, the saw blade 5 will drive the lower clamping plate 9 to move up and down. This drives the movable plate 10 to move up and down in the fixed plate 1001, and the gas between the movable plate 10, the fixed plate 1001 and the second plug plate 1003 is squeezed, and most of the air is squeezed out from the air duct 11, and the air duct 11 is connected to the inside of the cleaning mechanism 7, so that the air flow can enter the cleaning mechanism 7 and be ejected from the inside of the scraper 701, so as to clean the impurities attached to the scraper 701, avoid the accumulation of impurities on the scraper 701, and improve the cleanliness of the scraper 701. In the cutting process, the saw blade 5 moves up and down and fits with the movable plate 12. The movable plate 12 also moves up and down with the saw blade 5, thereby reducing the wear on the saw blade 5 and increasing the service life of the saw blade 5.

[0037] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A band saw capable of cooling a cutting device, comprising a base (1), a cutting table (2) and a power box (3), wherein a saw blade (5) is installed in the middle of the cutting table (2), and characterized in that: A driving mechanism (6) is installed on the side of the power box (3), the output end of the driving mechanism (6) is connected to a transmission mechanism and a heat dissipation mechanism, the output end of the transmission mechanism is connected to a slide plate (8), the bottom end of the slide plate (8) is connected to an upper clamping plate (801) engaged with the saw blade (5), the inner wall of the base (1) is located below the cutting table (2) and is installed with a lower clamping plate (9), the lower clamping plate (9) is engaged with the bottom end of the saw blade (5), the base (1) is located below the lower clamping plate (9) and is also installed with a movable plate (10), the cutting table (2) is located on both sides of the saw blade (5) A cleaning mechanism (7) is installed, the cleaning mechanism (7) is in contact with the outer wall of the saw blade (5), and the cleaning mechanism (7) is rotatably connected to the cutting table (2). A movable plate (12) is also connected to the inner side of the cleaning mechanism (7), and a return spring rod (1201) is installed inside the movable plate (12). The movable plate (12) is movably connected to the cleaning mechanism (7) via the return spring rod (1201), and the movable plate (12) is naturally located below the cleaning mechanism (7). The movable plate (12) is in contact with the outer wall of the saw blade (5), and the movable plate (12) moves synchronously with the upward and downward movement of the saw blade (5).

2. A band saw capable of cooling a cutting device according to claim 1, characterized in that: The top of the base (1) is connected to a support platform (101), the power box (3) is located above the support platform (101), and the side of the support platform (101) located on the power box (3) is also connected to a fixing clamp (4), the fixing clamp (4) is sleeved on the outside of the slide plate (8), and a height adjuster (401) is installed on the side of the fixing clamp (4), and the height adjuster (401) is connected to the fixing clamp (4) by threads.

3. A band saw capable of cooling a cutting device according to claim 1, characterized in that: The top end of the cutting table (2) is connected to a screw propeller (201) and a positioning plate (202), a threaded rod is installed inside the screw propeller (201), and when the screw propeller (201) rotates, it drives the positioning plate (202) to slide on the cutting table (2).

4. A band saw capable of cooling a cutting device according to claim 1, characterized in that: An upper driving tooth (303) and a lower driving tooth (304) are installed on the inner wall of the power box (3); a first driven wheel (3031) is installed inside the upper driving tooth (303); a second driven wheel (3041) is installed inside the lower driving tooth (304); a transmission rod (305) is installed between the upper driving tooth (303) and the lower driving tooth (304); the transmission rod (305) is fixedly connected to the side of the slide plate (8); and the angles of the upper driving tooth (303) and the lower driving tooth (304) are staggered.

5. A band saw capable of cooling a cutting device according to claim 4, characterized in that: A driving motor (601) is installed inside the driving mechanism (6); an output end of the driving motor (601) is connected to a first transmission wheel (602) and a second transmission wheel (603); the first transmission wheel (602) is transmission-connected to a first driven wheel (3031) via a conveyor belt; and the second transmission wheel (603) is transmission-connected to a second driven wheel (3041) via a conveyor belt.

6. A band saw capable of cooling a cutting device according to claim 5, characterized in that: The output end of the driving mechanism (6) is connected to a collecting fan (604) and a cooling fan (605); the collecting fan (604) is fixed to the outer wall of the second transmission wheel (603), and the collecting fan (604) extends to the outside of the second transmission wheel (603); the single-piece shape of the collecting fan (604) is a twisted trapezoid; a guide plate (6041) is installed on the outside of the collecting fan (604); the annular inner wall of the guide plate (6041) is aligned with the outside of the cooling fan (605); a cooling net (301) matching the cooling fan (605) is provided on the outer wall of the power box (3); a protective shell (306) is also installed on the outer side of the driving mechanism (6); the end of the protective shell (306) is a mesh structure; and an air vent (307) is provided on the outer wall of the power box (3) located inside the protective shell (306).

7. A band saw capable of cooling a cutting device according to claim 1, characterized in that: An air injection hole is provided inside the cleaning mechanism (7) and below the scraper (701) of the cleaning mechanism (7), and an air injection hole is also provided on the side of the moving plate (12) of the cleaning mechanism (7).

8. A band saw capable of cooling a cutting device according to claim 1, characterized in that: First plug plates (901) are provided on both sides of the lower clamping plate (9), and the lower clamping plate (9) is slidably connected to the movable plate (10) via the first plug plates (901).

9. A band sawing machine capable of cooling a cutting device according to claim 1, characterized in that: A fixed plate (1001) is also installed on the outer side of the movable plate (10), and a positioning spring rod (1002) and a second plug plate (1003) are connected between the movable plate (1001) and the fixed plate (1001). A slot (1004) matching the second plug plate (1003) is provided on the outer wall of the fixed plate (1001). A one-way valve is installed at the bottom end of the fixed plate (1001). An air guide tube (11) is connected to the side of the fixed plate (1001), and the air guide tube (11) extends to the inside of the cutting table (2) and is aligned with the outer wall of the cleaning mechanism (7). The movable plate (10) moves up and down under the drive of the lower clamping plate (9), and sucks outside air from the one-way valve into the air cavity formed by the movable plate (10), the fixed plate (1001) and the second plug plate (1003), and sends the airflow into the air guide tube (11) by squeezing, and finally the airflow enters the cleaning mechanism (7).

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