A cutting machine that is easy to produce

Abstract

The present invention belongs to the field of textile technology, and is particularly a cutting machine that is easy to produce, including a cutting table, the bottom surface of which is fixedly connected with two sets of symmetrical supporting legs, the upper surface of which is fixedly connected with a material discharging rack, the upper surface of which is fixedly connected with a cutting rack, the upper surface of which is fixedly connected with a leveling rack, the inner bottom wall of which is fixedly connected with symmetrical electric push rods, a support frame is provided inside the material discharging rack, and the output end of each of the electric push rods is fixedly connected to the bottom surface of the support frame. The present invention provides pneumatic force by setting a cylinder, and uses the cylinder to push the pneumatic push rod, so that the pneumatic push rod pushes the cutting head on the mounting box to cut in cooperation with the slide groove and the slider, and a buffer seat is provided below the cutting head, and the buffer spring inside the buffer seat cooperates with the buffer plate to buffer the cutting head, reduce the wear of the cutting head, and reduce the production cost.

Description

Technical Field

[0001] The invention relates to the technical field of textiles, in particular to a cutting machine that is easy to produce. Background Art

[0002] The original meaning of textile is a general term for spinning and weaving, but with the continuous development and improvement of the textile knowledge system and discipline system, especially the emergence of non-woven textile materials and three-dimensional composite weaving technologies, now textile is not only the traditional hand spinning and weaving, but also includes non-woven technology, modern three-dimensional weaving technology, modern electrostatic nano-netting technology and other production of clothing, industrial and decorative textiles. Therefore, modern textile refers to a multi-scale structural processing technology of fiber or fiber aggregate. Ancient my country's textile and printing and dyeing technology has a very long history. As early as the primitive society, in order to adapt to climate change, the ancients knew how to use local materials and use natural resources as raw materials for textile and printing and dyeing, as well as to make simple hand-woven tools. Clothing, airbags, curtains and carpets in daily life are all products of textile and printing and dyeing technology. Cutting machines are needed to cut fabrics during textile processing and production.

[0003] The cutting machine is a CNC cutting equipment used for large-scale mass production of clothing. It is suitable for customized production of high-end suits, high-end fashions and uniforms. The cutting machine can meet the diversified needs of the cutting workshop to the greatest extent, and can realize segmented adsorption and segmented cutting, and realize simultaneous operation of feeding, cutting and picking up. It does not require any molds, is controlled by system software, and then directly cuts the product. As long as the corresponding parameters are set on the operating platform, the computer transmits the corresponding instructions to the cutting machine, and the cutting machine quickly cuts according to the accepted design drawings. It has high automation and simple operation. It is a cutting equipment used in many industries. The existing production shearing machine still has shortcomings when used. The cutting knife is directly connected to the power device, which is not convenient for replacing the knife head. The bottom of the cutting knife is not equipped with a shock-absorbing structure. During the cutting process, the cutting knife is connected to the iron plate, and the cutting knife is severely worn. Moreover, the cutting knife is cut for a long time, which is easy to generate heat and affects the cutting quality. For this reason, we propose a cutting machine that is easy to produce. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a cutting machine that is easy to produce, which solves the problems that the cutting blade of the existing production shearing machine is directly connected to the power device, making it inconvenient to replace the blade head, and no shock-absorbing structure is installed at the bottom of the cutting blade. During the cutting process, the cutting blade is connected to the iron plate, causing severe wear of the cutting blade. In addition, the cutting blade is prone to generate heat due to long-term cutting work, which affects the cutting quality.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a cutting machine that is easy to produce, comprising a cutting table, the bottom surface of the cutting table is fixedly connected to two groups of symmetrical supporting legs, the upper surface of the cutting table is fixedly connected to a material discharge rack, the upper surface of the cutting table is fixedly connected to a cutting rack, the upper surface of the cutting table is fixedly connected to a leveling rack, the inner bottom wall of the material discharge rack is fixedly connected to symmetrical electric push rods, a support frame is provided inside the material discharge rack, the output end of each electric push rod is fixedly connected to the bottom surface of the support frame, the upper surface of the support frame is fixedly connected to symmetrical connecting columns, and the ends of two connecting columns close to each other are fixedly connected to fixed disks.

[0006] A symmetrical first bearing is fixedly embedded in the inner side wall of the leveling frame, a first rotating roller is arranged inside the leveling frame, the left and right ends of the first rotating roller are respectively fixedly connected to the inner ring of the first bearing, a symmetrical through groove is opened on the inner side wall of the leveling frame, a sliding block adapted to the through groove is clamped inside each of the through grooves, a second bearing is fixedly embedded on one side of the two sliding blocks close to each other, a second rotating roller is arranged above the first rotating roller, the left and right ends of the second rotating roller are respectively fixedly connected to the inner ring of the second bearing.

[0007] The upper surface of the cutting frame is fixedly connected with a cylinder, the output end of the cylinder is fixedly connected with a pneumatic push rod, and the output end of the pneumatic push rod is fixedly connected with a cutter head mounting box, the upper surface of the cutter head mounting box is provided with a symmetrical first threaded hole, each of the first threaded holes is provided with a fixed threaded rod, the inner wall of each first threaded hole is threadedly connected to the outer surface of the fixed threaded rod, a cutting head is provided below the cutter head mounting box, the upper surface of the cutting head is fixedly connected with a symmetrical threaded cylinder, the bottom surface of the cutter head mounting box is provided with a symmetrical through hole, the top end of each threaded cylinder passes through the through hole and extends to the interior of the cutter head mounting box, the inner wall of each threaded cylinder is threadedly connected to the outer surface of the fixed threaded rod, the upper surface of the cutting table is fixedly connected with a buffer seat, the inner bottom wall of the buffer seat is fixedly connected with a symmetrical buffer spring, a buffer plate is provided inside the buffer seat, and the top end of each buffer spring is fixedly connected to the bottom surface of the buffer plate.

[0008] As a preferred technical solution of the present invention, the inner wall of the material discharging rack is fixedly connected with symmetrical sliding rods, the outer surface of each sliding rod is sleeved with a sliding sleeve, and the side surfaces of the two sliding sleeves close to each other are fixedly connected with the ends of the two connecting columns far away from each other.

[0009] As a preferred technical solution of the present invention, a symmetrical second threaded hole is opened on the upper surface of the leveling frame, an adjusting screw is arranged inside each of the second threaded holes, the outer surface of each adjusting screw is threadedly connected to the inner wall of the second threaded hole, a third bearing is fixedly embedded on the upper surface of each sliding block, the bottom end of each adjusting screw is fixedly connected to the inner ring of the third bearing, and the top end of each adjusting screw is fixedly connected to an adjusting wheel.

[0010] As a preferred technical solution of the present invention, brushes arranged at equal distances are fixedly connected to the inner bottom wall of the leveling frame, and the upper surface of each brush is in contact with the outer surface of the first rotating roller.

[0011] As a preferred technical solution of the present invention, the inner side wall of the cutting frame is provided with symmetrical slide grooves, each of the slide grooves is clamped with a slider adapted to the slide groove, and the left and right side surfaces of the cutter head mounting box are respectively fixedly connected to the side surfaces of the two sliders close to each other.

[0012] As a preferred technical solution of the present invention, a limit spring is provided inside each of the slide slots, and the bottom end of each of the limit springs is fixedly connected to the inner bottom wall of the slide slot.

[0013] As a preferred technical solution of the present invention, the front and back sides of the material discharging rack are fixedly connected with hanging plates, the front side of each hanging plate is fixedly connected with a hook, and the front and back sides of the material discharging rack are fixedly connected with a placement box.

[0014] As a preferred technical solution of the present invention, a connecting plate is provided between the two groups of supporting legs, and the left and right side surfaces of the connecting plate are respectively fixedly connected to the side surfaces of the two supporting legs that are close to each other.

[0015] As a preferred technical solution of the present invention, a control panel is fixedly connected to the front of the cutting frame, and a control button is fixedly connected to the front of the control panel.

[0016] As a preferred technical solution of the present invention, a fan is fixedly connected to the front of the cutter head installation box, and an output end of the fan is fixedly connected to a wind hood.

[0017] Compared with the prior art, the present invention provides a cutting machine that is easy to produce and has the following beneficial effects:

[0018] 1. The cutting machine, which is convenient for production, can place the cloth roll to be cut between the two fixed plates of the unloading rack by setting a material unloading rack. The fixed plates cooperate with the connecting column and the sliding sleeve to adjust the height of the two fixed plates by using the electric push rod, so as to facilitate material unloading. The hanging plate and the placement box are set on the unloading rack, so as to facilitate the storage of tools used for cutting.

[0019] 2. The cutting machine, which is easy to produce, can level the discharged cloth by setting a leveling frame to facilitate shearing. The passing cloth can be leveled by the cooperation of the first rotating roller and the second rotating roller. The second rotating roller can be adjusted by using the through groove and the sliding block to cooperate with the second rotating roller. The adjusting screw rod is driven by the adjusting wheel to cooperate with the second threaded hole, so that the adjusting screw rod drives the sliding block to move, thereby adjusting the distance between the second rotating roller and the first rotating roller, thereby improving the leveling effect.

[0020] 3. The cutting machine, which is easy to produce, provides pneumatic power by setting a cylinder, and uses the cylinder to push the pneumatic push rod, so that the pneumatic push rod pushes the cutting head on the head installation box to perform cutting under the cooperation of the slide groove and the slider. A buffer seat is provided under the cutting head, and the buffer spring inside the buffer seat cooperates with the buffer plate to buffer the cutting head, thereby reducing the wear of the cutting head and reducing the production cost.

[0021] 4. The cutting machine, which is easy to produce, has a fan arranged on the surface of a cutter head mounting box. When cutting, the fan can blow away the debris during cutting to avoid affecting the cutting quality. At the same time, the fan can be used to dissipate heat for the cutting head to ensure that the cutting quality is not affected by long-term use of the cutting head. The cutting head can be easily replaced by arranging a fixed threaded rod inside the cutter head mounting box to cooperate with the threaded barrel on the top of the cutting head. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the cutting machine of the present invention;

[0023] Figure 2 It is a side view of the material placing rack of the present invention;

[0024] Figure 3 A sectional view of a side view of the leveling frame of the present invention;

[0025] Figure 4 is a sectional view of a side view of a cutting frame of the present invention;

[0026] Figure 5 A sectional view of the front view of the cutter head mounting box of the present invention;

[0027] Figure 6 It is a side view of the buffer seat of the present invention;

[0028] Figure 7 It is a cross-sectional view of the front view of the sliding block of the present invention.

[0029] In the figure: 1, cutting table; 2, connecting plate; 3, supporting leg; 4, cutting frame; 5, control panel; 6, cylinder; 7, adjusting wheel; 8, adjusting screw rod; 9, leveling frame; 10, hanging plate; 11, unloading frame; 12, placing box; 13, fixing plate; 14, connecting column; 15, electric push rod; 16, sliding rod; 17, sliding sleeve; 18, supporting frame; 19, second rotating roller; 20, through slot; 21, first rotating roller; 22, Brush; 23, second threaded hole; 24, sliding block; 25, first bearing; 26, cutter head mounting box; 27, slider; 28, limit spring; 29, pneumatic push rod; 30, fan; 31, cutting head; 32, slide groove; 33, buffer seat; 34, first threaded hole; 35, fixed threaded rod; 36, threaded cylinder; 37, through hole; 38, buffer spring; 39, buffer plate; 40, second bearing; 41, third bearing. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0031] See also Figure 1-7 In this embodiment: a cutting machine that is easy to produce includes a cutting table 1, the bottom surface of the cutting table 1 is fixedly connected with two groups of symmetrical supporting legs 3, the upper surface of the cutting table 1 is fixedly connected with a material discharge rack 11, the upper surface of the cutting table 1 is fixedly connected with a cutting rack 4, the upper surface of the cutting table 1 is fixedly connected with a leveling rack 9, the inner bottom wall of the material discharge rack 11 is fixedly connected with symmetrical electric push rods 15, and a support frame 18 is provided inside the material discharge rack 11, the output end of each electric push rod 15 is fixedly connected to the bottom surface of the support frame 18, the upper surface of the support frame 18 is fixedly connected with symmetrical connecting columns 14, and the ends of the two connecting columns 14 close to each other are fixedly connected with a fixed disk 13.

[0032] A symmetrical first bearing 25 is fixedly embedded on the inner side wall of the leveling frame 9, and a first rotating roller 21 is arranged inside the leveling frame 9. The left and right ends of the first rotating roller 21 are respectively fixedly connected to the inner ring of the first bearing 25. A symmetrical through groove 20 is opened on the inner side wall of the leveling frame 9. A sliding block 24 adapted to the through groove 20 is clamped inside each through groove 20. A second bearing 41 is fixedly embedded on one side of the two sliding blocks 24 close to each other. A second rotating roller 19 is arranged above the first rotating roller 21. The left and right ends of the second rotating roller 19 are respectively fixedly connected to the inner ring of the second bearing 41.

[0033] The upper surface of the cutting frame 4 is fixedly connected with a cylinder 6, the output end of the cylinder 6 is fixedly connected with a pneumatic push rod 29, the output end of the pneumatic push rod 29 is fixedly connected with a cutter head installation box 26, the upper surface of the cutter head installation box 26 is provided with symmetrical first threaded holes 34, each of the first threaded holes 34 is provided with a fixed threaded rod 35, the inner wall of each first threaded hole 34 is threadedly connected with the outer surface of the fixed threaded rod 35, and a cutting head 31 is provided below the cutter head installation box 26, and the upper surface of the cutting head 31 is fixedly connected with a symmetrical first threaded hole 34. The threaded cylinder 36 has a symmetrical through hole 37 on the bottom surface of the tool head mounting box 26. The top end of each threaded cylinder 36 passes through the through hole 37 and extends to the inside of the tool head mounting box 26. The inner wall of each threaded cylinder 36 is threadedly connected to the outer surface of the fixed threaded rod 35. A buffer seat 33 is fixedly connected to the upper surface of the cutting table 1. A symmetrical buffer spring 38 is fixedly connected to the inner bottom wall of the buffer seat 33. A buffer plate 39 is provided inside the buffer seat 33. The top end of each buffer spring 38 is fixedly connected to the bottom surface of the buffer plate 39.

[0034] In this embodiment, the inner wall of the unloading rack 11 is fixedly connected with symmetrical sliding rods 16, and the outer surface of each sliding rod 16 is sleeved with a sliding sleeve 17. The side surfaces of the two sliding sleeves 17 that are close to each other are respectively fixedly connected to the ends of the two connecting columns 14 that are far away from each other, which can ensure the stability of the movement of the cloth rolls in the unloading rack 11.

[0035] A symmetrical second threaded hole 23 is provided on the upper surface of the leveling frame 9, and an adjusting screw 8 is provided inside each second threaded hole 23. The outer surface of each adjusting screw 8 is threadedly connected to the inner wall of the second threaded hole 23, and the upper surface of each sliding block 24 is fixedly inlaid with a third bearing 40. The bottom end of each adjusting screw 8 is fixedly connected to the inner ring of the third bearing 40, and the top end of each adjusting screw 8 is fixedly connected to an adjusting wheel 7, which can adjust the distance between the second rotating roller 19 and the first rotating roller 21 to facilitate the leveling of the cloth.

[0036] The inner bottom wall of the leveling frame 9 is fixedly connected with brushes 22 arranged at equal distances, and the upper surface of each brush 22 contacts the outer surface of the first rotating roller 21 , so that the surface of the first rotating roller 21 can be cleaned.

[0037] The inner wall of the cutting frame 4 is provided with symmetrical slide grooves 32, and a slider 27 adapted to the slide groove 32 is clamped inside each slide groove 32. The left and right sides of the cutter head mounting box 26 are respectively fixedly connected to the side of the two sliders 27 close to each other, which can ensure stability during the cutting process.

[0038] A limiting spring 28 is disposed inside each slide slot 32 , and the bottom end of each limiting spring 28 is fixedly connected to the inner bottom wall of the slide slot 32 , so as to be able to limit the position during the cutting process.

[0039] The front and back of the material rack 11 are fixedly connected with hanging plates 10, the front of each hanging plate 10 is fixedly connected with a hook, and the front and back of the material rack 11 are fixedly connected with a storage box 12, which can conveniently store tools used for cutting.

[0040] A connecting plate 2 is provided between the two groups of supporting legs 3, and the left and right side surfaces of the connecting plate 2 are respectively fixedly connected to the side surfaces of the two supporting legs 3 that are close to each other, so as to ensure the stability of the cutting machine.

[0041] A control panel 5 is fixedly connected to the front of the cutting frame 4, and a control button is fixedly connected to the front of the control panel 5, which can conveniently control the cutting device to perform cutting.

[0042] A fan 30 is fixedly connected to the front of the cutter head installation box 26 , and an output end of the fan 30 is fixedly connected to a wind hood, which can cool the cutting head 31 .

[0043] In this embodiment, the electric push rod 15, the cylinder 6 and the fan 30 are all known technologies that have been disclosed and widely used in daily life, and have been expanded in detail in this embodiment.

[0044] The working principle and use process of the present invention are as follows: when in use, the cutting machine is first placed in the production workshop through the cooperation of the supporting legs 3 and the connecting plate 2, the device is powered on, the cloth roll to be cut is installed between the two fixed plates 13, the electric push rod 15 is started, and the electric push rod 15, under the cooperation of the slide rod 16 and the sliding sleeve 17, lifts the cloth roll to be cut, pulls the cloth roll, and makes the cloth pass through the first rotating roller 21 and the second rotating roller 19 inside the leveling frame 9, rotates the adjusting wheel 7, and the adjusting wheel 7 drives the adjusting screw rod 8 to rotate inside the second threaded hole 23, so as to adjust the distance between the second rotating roller 19 and the first rotating roller 21 by using the cooperation of the through groove 20 and the sliding block 24, and continue to pull the cloth The cloth is passed through the cutting frame 4, and the cloth is pulled a certain distance according to the size to be cut, and the cylinder 6 is started, so that the cylinder 6 pushes the pneumatic push rod 29 to move. The pneumatic push rod 29 drives the cutting head 31 at the bottom of the cutter head installation box 26 to cut the cloth under the cooperation of the slide groove 32 and the slider 27. When the cutting head 31 is cutting, the buffer spring 38 inside the buffer seat 33 below the cutting head 31 cooperates with the buffer plate 39 to buffer the cutting head 31 and reduce the wear of the cutting head 31. When replacing the cutting head 31, the fixed threaded rod 35 is rotated to disengage the fixed threaded rod 35 from the threaded cylinder 36, so that the cutting head 31 can be replaced, which is convenient for the use of the cutting machine.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cutting machine convenient for production, comprising a cutting table (1), characterized in that: The bottom surface of the cutting table (1) is fixedly connected to two groups of symmetrical supporting legs (3), the upper surface of the cutting table (1) is fixedly connected to a material placing rack (11), the upper surface of the cutting table (1) is fixedly connected to a cutting rack (4), the upper surface of the cutting table (1) is fixedly connected to a leveling rack (9), the inner bottom wall of the material placing rack (11) is fixedly connected to symmetrical electric push rods (15), a support frame (18) is provided inside the material placing rack (11), the output end of each electric push rod (15) is fixedly connected to the bottom surface of the support frame (18), the upper surface of the support frame (18) is fixedly connected to symmetrical connecting columns (14), and the ends of the two connecting columns (14) close to each other are fixedly connected to a fixing plate (13); A symmetrical first bearing (25) is fixedly embedded in the inner wall of the leveling frame (9), a first rotating roller (21) is arranged inside the leveling frame (9), and the left and right ends of the first rotating roller (21) are respectively fixedly connected to the inner ring of the first bearing (25), and a symmetrical through groove (20) is opened on the inner wall of the leveling frame (9), and a sliding block (24) adapted to the through groove (20) is clamped inside each of the through grooves (20), and a second bearing (41) is fixedly embedded on the side surfaces of the two sliding blocks (24) close to each other, and a second rotating roller (19) is arranged above the first rotating roller (21), and the left and right ends of the second rotating roller (19) are respectively fixedly connected to the inner ring of the second bearing (41); The upper surface of the cutting frame (4) is fixedly connected to a cylinder (6); the output end of the cylinder (6) is fixedly connected to a pneumatic push rod (29); the output end of the pneumatic push rod (29) is fixedly connected to a cutter head installation box (26); the upper surface of the cutter head installation box (26) is provided with symmetrical first threaded holes (34); each of the first threaded holes (34) is provided with a fixed threaded rod (35); the inner wall of each of the first threaded holes (34) is threadedly connected to the outer surface of the fixed threaded rod (35); a cutting head (31) is provided below the cutter head installation box (26); the upper surface of the cutting head (31) is fixedly connected to a symmetrical first threaded hole (34); The threaded cylinder (36) is provided with symmetrical through holes (37) on the bottom surface of the cutter head mounting box (26), the top end of each threaded cylinder (36) passes through the through hole (37) and extends into the interior of the cutter head mounting box (26), the inner wall of each threaded cylinder (36) is threadedly connected to the outer surface of the fixed threaded rod (35), the upper surface of the cutting table (1) is fixedly connected to a buffer seat (33), the inner bottom wall of the buffer seat (33) is fixedly connected to symmetrical buffer springs (38), a buffer plate (39) is provided inside the buffer seat (33), and the top end of each buffer spring (38) is fixedly connected to the bottom surface of the buffer plate (39); The inner wall of the material discharging rack (11) is fixedly connected with symmetrical sliding rods (16), and the outer surface of each sliding rod (16) is sleeved with a sliding sleeve (17), and the side surfaces of the two sliding sleeves (17) close to each other are fixedly connected to the ends of the two connecting columns (14) away from each other; The upper surface of the leveling frame (9) is provided with symmetrical second threaded holes (23), each of the second threaded holes (23) is provided with an adjusting screw (8), the outer surface of each adjusting screw (8) is threadedly connected to the inner wall of the second threaded hole (23), the upper surface of each sliding block (24) is fixedly inlaid with a third bearing (40), the bottom end of each adjusting screw (8) is fixedly connected to the inner ring of the third bearing (40), and the top end of each adjusting screw (8) is fixedly connected to an adjusting wheel (7); The inner side wall of the cutting frame (4) is provided with symmetrical sliding grooves (32), and a sliding block (27) adapted to the sliding groove (32) is clamped inside each of the sliding grooves (32), and the left and right side surfaces of the cutter head installation box (26) are respectively fixedly connected to the side surfaces of the two sliding blocks (27) that are close to each other.

2. A cutting machine that is easy to produce according to claim 1, characterized in that: The inner bottom wall of the leveling frame (9) is fixedly connected to brushes (22) arranged at equal distances, and the upper surface of each brush (22) is in contact with the outer surface of the first rotating roller (21).

3. A cutting machine that is easy to produce according to claim 1, characterized in that: A limit spring (28) is provided inside each of the slide grooves (32), and the bottom end of each of the limit springs (28) is fixedly connected to the inner bottom wall of the slide groove (32).

4. A cutting machine convenient for production according to claim 1, characterized in that: The front side of the material discharging rack (11) and the back side of the material discharging rack (11) are both fixedly connected with hanging plates (10), the front side of each hanging plate (10) is fixedly connected with a hook, and the front side of the material discharging rack (11) and the back side of the material discharging rack (11) are both fixedly connected with a placement box (12).

5. A cutting machine convenient for production according to claim 1, characterized in that: A connecting plate (2) is provided between the two groups of supporting legs (3), and the left and right side surfaces of the connecting plate (2) are respectively fixedly connected to the side surfaces of the two supporting legs (3) that are close to each other.

6. A cutting machine convenient for production according to claim 1, characterized in that: A control panel (5) is fixedly connected to the front of the cutting frame (4), and a control button is fixedly connected to the front of the control panel (5).

7. A cutting machine convenient for production according to claim 1, characterized in that: The front side of the cutter head installation box (26) is fixedly connected to a fan (30), and the output end of the fan (30) is fixedly connected to a wind hood.

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