Cutting device for machining ventilator shell

Abstract

The invention relates to the technical field of ventilator shell machining, in particular to a cutting device for ventilator shell machining, which comprises a cutting machine tool, an electric telescopic cylinder is fixedly connected to the surface of the cutting machine tool, the electric telescopic cylinder is telescopic, a cutting structure is arranged at the bottom of the electric telescopic cylinder, and an expansion structure is arranged at the bottom of the electric telescopic cylinder. A blowing heat dissipation structure is arranged on the side face of the expansion structure, the telescopic plate and the cutting structure gradually descend to cut the shell, the telescopic plate descends to apply pressure to the two swing plates, the two swing plates are driven to swing the movable plate to expand outwards, and the overall storage and protection range of the protective cover formed by the fixed plate and the movable plate is expanded. And the situation that the chippings cut by the cutting structure are stored too fully and need to be continuously stopped by workers to clean the chippings is prevented, through the design, the situation that the chippings stored too fully during stopping are cleaned can be reduced, and meanwhile the cutting efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ventilator housing processing, and specifically, to a cutting device for processing a ventilator housing. Background Art

[0002] A ventilator is a machine that relies on the input mechanical energy to increase the gas pressure and discharge the gas. It is a driven fluid machine. Modern ventilators are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and induced draft of boilers and industrial furnaces, cooling and ventilation in air conditioning equipment and household electrical appliances, drying and selection of grains, air source of wind tunnels and inflation and propulsion of hovercrafts, etc.; However, when cutting the existing ventilator housing, most are through laser cutting, plasma cutting and mechanical cutting, etc. Among them, mechanical cutting is to push the moving blade to move linearly relative to the fixed blade through a hydraulic system or a mechanical transmission device, and apply a shearing force to the housing placed between the blades. The housing is subjected to concentrated stress at the edge of the blade. When the stress exceeds the shear strength of the housing, the housing undergoes plastic deformation and is cut off. After retrieval, the application number is: 202223267854.5, a cutting device for processing a fresh air fan housing. This device places the raw material plate of the fresh air fan housing on the surface of the placement plate, and then pushes the positioning plate downward by the first servo electric cylinder to clamp and fix the raw material plate of the fresh air fan housing. Then, through the moving machine and the cutting assembly, the cutting work of the raw material plate of the fresh air fan housing can be completed, avoiding manual cutting and increasing safety; However, when the cutting knife gradually cuts deeper into the housing, it means that the generated debris will gradually increase. During the cutting process in the above document, the protection range of the protective cover is too limited and only plays a protective role. Therefore, when the debris gradually increases and splashes, if the protective cover with a limited protection range will make the debris easily accumulate near the cutting part of the housing. Since heat is also generated near the cutting part of the housing during the cutting process of the housing, because the frictional force generated when the housing contacts the cutting knife will cause heat to be generated on both of them. Therefore, the debris near the surface of the housing cutting part is easy to fuse with the housing, forming an incomplete plane, thus affecting the subsequent cleaning of the debris by the staff and reducing the production efficiency. In view of this, we propose a cutting device for processing a ventilator housing. Summary of the Invention

[0003] The object of the present invention is to provide a cutting device for processing a ventilator housing, including a cutting machine tool. A power telescopic cylinder is fixedly connected to the surface of the cutting machine tool. The power telescopic cylinder is divided into a cylinder body and a piston rod. An expansion structure for expanding the protection range is provided at the bottom of the cylinder body of the power telescopic cylinder. The bottom of the piston rod of the power telescopic cylinder is fixedly connected to a first fixing plate. Two sets of blowing and heat dissipation structures for blowing and heat dissipation and guiding debris are respectively arranged at the bottom of the first fixing plate. A cutting structure for cutting the housing is arranged at the bottom of the first fixing plate. The cutting structure is divided into a cutting tool and a motor; When the first fixing plate approaches the top of the expansion structure, the expansion structure is in a state of approaching each other and blocking the debris cut by the cutting structure, and the two sets of blowing and heat dissipation structures blow air to the sides of the cutting structure respectively; When the first fixing plate moves away from the top of the expansion structure, the protection storage range of the expansion structure is expanded according to the cutting depth of the cutting structure, and the two sets of blowing and heat dissipation structures are at the same level and blow air to the part being cut by the cutting structure. At the same time, the airflow of the blowing and heat dissipation structure guides the debris accumulated on the housing to the four corners of the expansion structure for storage.

[0004] Preferably, the expansion structure includes a second fixing plate. The top of the second fixing plate is fixedly connected to the cylinder body of the power telescopic cylinder. A moving plate for expanding the protection range is slidably connected inside both sides of the second fixing plate. The second fixing plate and the two moving plates cooperate with each other to form a protective cover. When the two moving plates move away from each other, it is used to expand the protection range of the protective cover formed by the second fixing plate and the two moving plates.

[0005] Preferably, a sliding groove for the moving plate to slide is opened inside the second fixing plate, and a clamping groove and a clamping block for limiting are arranged on the surface of the second fixing plate and the moving plate.

[0006] Preferably, telescopic plates are respectively slidably connected inside both sides of the first fixing plate. A linear groove for the telescopic plate to slide is opened inside the first fixing plate. A return spring for driving the telescopic plate to move is arranged inside the first fixing plate. The sides of the telescopic plates slidably connected to both sides of the first fixing plate are abutted against the inner sides of the moving plates.

[0007] Preferably, the piston rod of the power telescopic cylinder sequentially penetrates through the middle parts of the second fixing plate and the moving plate and is fixedly connected to the top of the first fixing plate. When the piston rod of the power telescopic cylinder does not move, the two telescopic plates are in a state of approaching each other inside the first fixing plate. When the piston rod of the power telescopic cylinder moves, the two telescopic plates are in a state of moving away from each other inside the first fixing plate.

[0008] Preferably, when the first fixed plate is close to the inner side of the second fixed plate, the two moving plates slidably connected inside the second fixed plate are in a state of approaching each other; when the first fixed plate is away from the inner side of the second fixed plate, the two moving plates slidably connected inside the second fixed plate are in a state of moving away from each other.

[0009] Preferably, the second fixed plate is arranged in an "n" shape, the moving plates slidably connected inside both sides of the second fixed plate are arranged in an "n" shape, and baffles are arranged on the sides of the two moving plates away from each other.

[0010] Preferably, the blowing and heat dissipation structure includes a swing plate. One side of the swing plate facing the electric telescopic cylinder is hinged to the bottom of the first fixed plate, and the side of the swing plate away from the first fixed plate is hinged to the moving plate. A dust blocking plate for dust blocking is fixedly connected to the inner side of the moving plate. A flow guiding cylinder for guiding wind is fixedly connected to the surface of the swing plate facing the cutting structure. A plurality of fans are respectively fixedly connected to the surface of the swing plate facing the cutting structure. A filter screen for blocking debris is fixedly connected to the side of the flow guiding cylinder away from the swing plate.

[0011] Preferably, when the first fixed plate is close to the second fixed plate, the swing plate hinged to the inner side of the moving plate at the bottom of the first fixed plate is in an inclined state. When the swing plate is in an inclined state, the wind blown by the fan can blow the side facing the cutting structure through the cooperation of the flow guiding cylinder and the filter screen. When the first fixed plate is away from the second fixed plate, the swing plate hinged to the inner side of the moving plate at the bottom of the first fixed plate is in a parallel state. When the swing plate is in a parallel state, the wind blown by the fan can be blocked by the cutting structure, and the debris is guided to the four corners of the second fixed plate and stored under the dust blocking plate.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this cutting device for processing the casing of a ventilator, the casing is gradually cut by the telescopic plate and the cutting structure. The two swing plates will be pressured by the downward movement of the first fixed plate and the telescopic plate, and the two swing plates are driven to swing to expand the moving plates outward, realizing the expansion of the overall storage and protection range of the protective cover formed by the second fixed plate and the moving plates, preventing the debris cut by the cutting structure from being stored too full and requiring the staff to constantly stop the machine to clean the debris. Through this design, not only can the downtime for cleaning the stored debris be reduced, but also the cutting efficiency can be improved.

[0013] 2. In the cutting device for processing the housing of a ventilator, through the swinging of two swinging plates, the fan can be tilted to blow air for heat dissipation to the cutting structure and the cutting part of the housing. Moreover, the cutting structure is solid. Therefore, the air blown onto the surface of the cutting structure will rebound, blowing the debris received on the surface of the housing under the dust guard and collecting it at the four corners formed by the second fixed plate and the moving plate. This not only facilitates the accumulation of debris in a certain area when the staff resets the overall structure after the cutting is completed, but also makes it convenient for the staff to clean the debris. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic assembly diagram of the overall structure of the present invention; Figure 2 Side perspective view of the overall structure of the present invention; Figure 3 Partial enlarged view of the expansion structure of the present invention; Figure 4 Overall cross-sectional perspective view of the expansion structure and the air blowing and heat dissipation structure of the present invention; Figure 5 Schematic disassembled view of the expansion structure of the present invention; Figure 6 Cross-sectional perspective view of the expansion structure and the air blowing and heat dissipation structure of the present invention; Figure 7 Schematic disassembled structure view of the air blowing and heat dissipation structure of the present invention; Figure 8 Two-dimensional motion state diagram of the expansion structure and the air blowing and heat dissipation structure of the present invention; Figure 9 Three-dimensional schematic diagram after the motion state of the expansion structure and the air blowing and heat dissipation structure of the present invention; Figure 10 Two-dimensional schematic diagram after the motion state of the expansion structure and the air blowing and heat dissipation structure of the present invention.

[0015] The meanings of each label in the figure are as follows: 1. Cutting machine tool; 2. Electric telescopic cylinder; 21. First fixed plate; 22. Telescopic plate; 300. Expansion structure; 301. Second fixed plate; 302. Moving plate; 400. Air blowing and heat dissipation structure; 401. Fan; 402. Flow guide cylinder; 403. Filter screen; 404. Swinging plate; 405. Dust guard; 5. Cutting structure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the protection scope of the present invention.

[0017] When the existing cutting structure 5 gradually descends for cutting towards the thick outer shell, it shows that the generated debris will gradually increase. This is because the cutting structure 5 initially only acts on the area of a local position. As the cutting deepens, the area passed by the cutting structure 5 gradually increases, and the contact time with the outer shell is relatively long. This leads to more of the outer shell being cut by the cutting structure 5. Therefore, more debris will be generated during cutting. At the same time, the debris is easily accumulated near the cutting part of the outer shell. During the cutting process of the outer shell, heat will also be generated at the cutting part of the outer shell because the frictional force generated when the outer shell comes into frictional contact with the cutting tool will cause heat to be generated on both of them. Therefore, the debris near the cutting part of the outer shell is easily fused with the outer shell, forming an incomplete plane, which affects the subsequent cleaning of the debris by the staff and reduces the production efficiency. Therefore, the present invention provides a cutting device for processing a ventilator outer shell. Refer to Figure 1 As shown, a cutting device for processing a ventilator outer shell includes a cutting machine tool 1. A power telescopic cylinder 2 is fixedly connected to the surface of the cutting machine tool 1. The power telescopic cylinder 2 is divided into a cylinder body and a piston rod. Two expansion structures 300 for expanding the protection range are arranged at the bottom of the cylinder body of the power telescopic cylinder 2. A first fixing plate 21 is fixedly connected to the bottom of the piston rod of the power telescopic cylinder 2. A blowing and heat dissipation structure 400 for blowing air to dissipate heat and guiding debris is respectively arranged at the bottom of the first fixing plate 21. Telescopic plates 22 are respectively slidably connected to the inner parts on both sides of the first fixing plate 21. A linear groove for the telescopic plate 22 to slide is formed in the first fixing plate 21. A return spring for driving the telescopic plate 22 to move is arranged inside the first fixing plate 21. Regarding the connection setting of the first fixing plate 21 and the telescopic plate 22, when the expansion structures 300 move away from each other, the spring inside the first fixing plate 21 will release pressure and drive the telescopic plate 22 to always fit with the expansion structures 300. On the one hand, it prevents the telescopic plate 22 from detaching from the first fixing plate 21 during the movement process. On the other hand, it always maintains a closed space with the expansion structures 300 to improve the subsequent blowing and heat dissipation and guiding of debris. In addition, a cutting structure 5 for cutting the outer shell is arranged at the bottom of the first fixing plate 21. The cutting structure 5 includes a cutting tool and a motor for driving the cutting tool to rotate. The cutting structure 5 drives the cutting tool to rotate at a high speed through the rotation of the output shaft of the motor, facilitating the subsequent cutting of the outer shell. When the first fixing plate 21 approaches the top of the expansion structure 300, the expansion structure 300 is in a state of approaching each other and blocks the debris cut by the cutting structure 5, and the two groups of blowing and heat dissipation structures 400 blow air to the sides of the cutting structure 5 respectively; When the first fixing plate 21 moves away from the top of the expansion structure 300, the protective storage range of the expansion structure 300 is expanded according to the cutting depth of the cutting structure 5, and the two groups of blowing and heat dissipation structures 400 are respectively at the same level and blow air to the part being cut by the cutting structure 5. At the same time, the airflow of the blowing and heat dissipation structure 400 guides the debris accumulated on the housing to the four corners of the expansion structure 300 for storage.

[0018] In addition, please combine Figures 4 - 10 , and the following specific structures need to be disclosed in detail. There are two groups of blowing and heat dissipation structures 400 arranged along the electric telescopic cylinder 2. On the one hand, it is to direct the air blown out by the blowing and heat dissipation structures 400 to both sides of the cutting structure 5 for cooling, improving the cooling speed of the cutting structure 5. On the other hand, it is convenient for the expansion structure 300 to expand into a rectangular protective cover, increasing the area for subsequent debris collection; Here, the working principle of the cutting machine tool 1 is described. As is well known in the technical field, through preset programs and parameters, each moving part of the machine tool is controlled, the electric telescopic cylinder 2 is moved to a preset position, and the motor is started to drive the cutting structure 5 to rotate at a high speed. The teeth on the saw blade of the cutting structure 5 continuously cut the material in a circular motion. The workpiece is usually clamped on the workbench, and the workpiece is brought into contact with the rotating saw blade through a manual or automatic feeding device, and finally the cutting is completed; The electric telescopic cylinder 2 is telescopically arranged. It converts electrical energy into mechanical energy through a motor and drives the telescopic column to perform telescopic motion. It is to continuously change the extended length of the cutting structure 5 when cutting shells of different thicknesses, so as to realize the cutting of shells of different thicknesses and improve the adaptability of the cutting structure 5; On the above basis, the following specific structures need to be disclosed in detail: First of all, to realize the increase of the overall protection range of the expansion structure 300 according to the cutting depth of the cutting structure 5, the following specific structures need to be disclosed in detail. Please refer to Figures 1 - 5, the expansion structure 300 includes a second fixed plate 301. The top of the second fixed plate 301 is fixedly connected to the cylinder block of the electric telescopic cylinder 2. Two sides of the second fixed plate 301 are internally slidably connected with moving plates 302 for expanding the protection range. A chute for the sliding of the moving plates 302 is provided inside the second fixed plate 301. A clamping groove and a clamping block (not labeled in the text) for limiting are provided between the inside of the second fixed plate 301 and the surface of the moving plates 302. As for the clamping grooves and clamping blocks (not labeled in the text) provided on the surfaces of the second fixed plate 301 and the moving plates 302, they are the same as those of the first fixed plate 21 and the telescopic plate 22 in the above text. This is to prevent the moving plates 302 from detaching from the inside of the second fixed plate 301 when moving to the maximum distance, and to form a complete protective cover to protect the debris cut by the subsequent cutting structure 5. In addition, the middle parts of the second fixed plate 301 and the moving plates 302 are penetrated by the piston rod of the electric telescopic cylinder 2 and are slidably connected, which is to facilitate the subsequent limited movement of the blowing and heat dissipation structure 400; The following describes the detailed movement process that the cutting structure 5 needs to continue cutting. Since the second fixed plate 301 and the moving plates 302 are assembled to form a square protective cover that wraps the cutting structure 5, when the cutting structure 5 starts to cut the outer shell, the formed square protective cover can protect the sparks and debris splashed during cutting. At the same time, when the cutting structure 5 needs to continue to lower and cut the outer shell, the staff controls the movement of the output end of the electric telescopic cylinder 2 to drive the first fixed plate 21 and the telescopic plate 22 to move, so that the cutting structure 5 provided below the first fixed plate 21 and the telescopic plate 22 descends to deeply cut the outer shell; Next, to better direct the wind blown by the blowing and heat dissipation structure 400 to the cutting structure 5 during cutting, the following specific structure needs to be disclosed in detail. Please refer to Figures 4 - 10, the blowing and heat dissipation structure 400 includes a swing plate 404. One side of the swing plate 404 facing the electric telescopic cylinder 2 is hinged to the bottom of the first fixing plate 21. The side of the swing plate 404 away from the first fixing plate 21 is hinged to the moving plate 302. It should be noted here that hinging usually includes a pin shaft such as a cylindrical pin and two or more connecting components. Due to the existence of the pin shaft, the swing plate 404 can rotate around the center of the pin shaft. This rotation provides a certain degree of freedom, enabling the two components to move independently of each other, facilitating the subsequent swinging of the swing plate 404 to expand the protection range. Then, a dust shield 405 for dust blocking is fixedly connected to the inner side of the moving plate 302. It should be noted here that there is a certain gap between the dust shield 405 and the housing, which is to facilitate the diversion of the blown air to the lower part of the dust shield 405 for storage. And the swing plate 404 is provided with several groups of holes (not marked in the text). The holes are opened to keep the air flowing in front of the fan 401 all the time when the fan 401 blows. Because the main function of the fan 401 is to push the air to flow through the rotation of the blades. When the blades of the fan 401 rotate, the air in front will be pushed forward to form an air flow. If there is a solid plate behind the fan 401, it will prevent the air from being supplemented to the blades of the fan 401 from the rear, thus destroying the normal circulation of the air. Therefore, the rear of the fan 401 must be empty or hollow to allow the surrounding air to be continuously sucked in, ensuring that the air continuously flows through the fan 401 to form an effective air convection (i.e., blowing). In addition, a flow guide cylinder 402 for guiding the wind is fixedly connected to the surface of the swing plate 404 facing the cutting structure 5. A plurality of fans 401 are respectively fixedly connected to the surface of the swing plate 404 facing the cutting structure 5. A filter screen 403 for blocking debris is fixedly connected to the side of the flow guide cylinder 402 away from the swing plate 404. The flow guide cylinder 402 fixedly connected to the surface of the swing plate 404 facing the cutting structure 5 is trapezoidal. As for the trapezoidal setting of the flow guide cylinder 402, on the one hand, it concentrates the wind blown by each group of fans 401 to the cutting part of the cutting structure 5, and on the other hand, it prevents the wind blown by the fans 401 from blowing up the debris stored on the surface of the housing again, which is beneficial to maintaining the temperature of the cutting structure 5 and keeping it within the appropriate working temperature range to improve the cutting effect. Then, the filter screen 403 fixedly connected to the side of the flow guide cylinder 402 away from the swing plate 404 is made of fine gauze. As for the filter screen 403 being made of fine gauze material and the gaps being set relatively tightly, because the fine gauze is mainly made of fine metal wires and has characteristics such as high strength, good toughness, and wear resistance. On the one hand, it can only conduct the wind blown by the fans 401, on the other hand, it blocks the debris from passing through the filter screen 403 and falling into the interior of the flow guide cylinder 402. On the other hand, the filter screen 403 also has a function of protecting against debris, which is beneficial to improving the wind guiding and protecting against flying debris at the same time; The following describes the specific movement process of increasing the protection range of the square protective cover formed by the second fixed plate 301 and the moving plate 302, while dissipating the heat generated by the cutting structure 5 and blowing the debris towards the dust baffle 405 for storage. When the first fixed plate 21 and the telescopic plate 22 drive the cutting structure 5 arranged below to descend and cut the outer shell, the swing plate 404 hinged at the bottom of the first fixed plate 21 will be driven to swing. At the same time, the moving plate 302 hinged at one end of the swing plate 404 away from the first fixed plate 21 will be driven by the swing of the swing plate 404 to expand outwards. This is because when the swing plate 404 is in an inclined state, its length is less than the actual length of the swing plate 404. As the swing plate 404 gradually swings towards the straight state, its length will gradually increase until it is equal to the actual length of the swing plate 404, causing the distance between the left and right sides of the square protective cover formed by the second fixed plate 301 and the moving plate 302 to increase (i.e., a rectangular protective cover), thereby increasing the protection range of the protective cover and at the same time increasing the storage space, preventing the protective cover from being filled with debris after long-term accumulation, and thus eliminating the need to stop the machine to clean the debris, which is beneficial to maintaining the cutting structure 5 in a stable state for cutting the outer shell at all times; Then, when the swing plate 404 swings to expand the protection range of the protective cover, it will swing and incline each group of fans 401 and the guide cylinders 402, making the openings of the guide cylinders 402 face the part of the outer shell being cut by the cutting structure 5. Then, the staff starts all the fans 401, so that the wind blown by the fans 401 is directed towards the cutting structure 5, thereby reducing the high temperature generated by the cutting structure 5 when cutting the outer shell, which is beneficial to improving the service life of the cutting structure 5 and at the same time reducing the high-temperature wear condition of the cutting structure 5. At the same time, when the guide cylinders 402 divert the wind to the surface of the cutting structure 5, since the cutting structure 5 is solidly arranged, the wind blown to the surface of the cutting structure 5 will rebound, blowing the debris received on the surface of the outer shell under the dust baffle 405 and collecting it at the four corners formed by the second fixed plate 301 and the moving plate 302. This facilitates the staff to accumulate the debris in a certain area when resetting the overall structure after the cutting is completed, making it convenient for the staff to clean the debris.

[0019] Working principle: The staff places the outer shell on the surface of the cutting machine tool 1 and clamps it, and then starts the cutting machine tool 1 to move the cutting structure 5, the expansion structure 300, and the air-blowing heat dissipation structure 400 to the position where the outer shell needs to be cut. Then, the cutting structure 5 is started to cut the outer shell. Since the second fixed plate 301 and the moving plate 302 are assembled to form a square protective cover that wraps the cutting structure 5, it can protect against the flying sparks and debris during cutting. Then, when it is necessary to cut deep into the outer shell, the staff controls the movement of the output end of the electric telescopic cylinder 2 and drives the first fixed plate 21 and the telescopic plate 22 to move, so that the cutting structure 5 arranged below the first fixed plate 21 and the telescopic plate 22 descends to perform deep cutting on the outer shell; As the cutting depth of the cutting structure 5 increases, the generated debris also increases. Therefore, when the first fixed plate 21 and the telescopic plate 22 drive the cutting structure 5 arranged below to descend and cut the outer shell, the swing plate 404 hinged at the bottom of the first fixed plate 21 will be driven to swing. At the same time, the moving plate 302 hinged at one end of the swing plate 404 away from the first fixed plate 21 will be driven by the swing of the swing plate 404 to expand outward, increasing the protection and storage range. Also considering that high temperature and debris will be generated when the cutting structure 5 continues to operate, therefore, when the swing plate 404 swings to expand the protection range of the protective cover, each group of fans 401 and the flow guide cylinders 402 will be swung and tilted, so that the openings of the flow guide cylinders 402 face the part of the outer shell cut by the cutting structure 5. Then, the staff starts all the fans 401, so that the wind blown by the fans 401 is directed to the cutting structure 5, reducing the high temperature generated by the cutting structure 5 when cutting the outer shell. At the same time, when the flow guide cylinders 402 guide the wind to the surface of the cutting structure 5, since the cutting structure 5 is solidly arranged, the wind blown to the surface of the cutting structure 5 will rebound, blowing the debris received on the surface of the outer shell under the dust baffle 405, facilitating the staff to accumulate the debris in a certain area when resetting the overall structure after the cutting is completed.

[0020] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A cutting device for processing a fan housing, comprising a cutting machine tool (1), characterized in that: The surface of the cutting machine tool (1) is fixedly connected to an electric telescopic cylinder (2); the bottom of the cylinder body of the electric telescopic cylinder (2) is provided with an expansion structure (300) for expanding the protection range; the bottom of the piston rod of the electric telescopic cylinder (2) is fixedly connected to a first fixing plate (21); the bottom of the first fixing plate (21) is provided with two groups of air blowing and heat dissipation structures (400) for blowing air to dissipate heat and guide debris; and the bottom of the first fixing plate (21) is provided with a cutting structure (5) for cutting the outer shell; When the first fixing plate (21) is close to the top of the expansion structure (300), the expansion structures (300) are in a mutually close state and block the debris cut by the cutting structure (5), and the two sets of air blowing and heat dissipation structures (400) blow air to the sides of the cutting structure (5) respectively; When the first fixing plate (21) is away from the top of the expansion structure (300), the cutting depth of the cutting structure (5) expands the protective storage range of the expansion structure (300), and the two sets of blowing and heat dissipation structures (400) are respectively at the same level and blow air to the part of the cutting structure (5) being cut, and at the same time, the airflow of the blowing and heat dissipation structure (400) guides the debris accumulated in the outer shell to the four corners of the expansion structure (300).

2. The cutting device for processing a fan housing according to claim 1, characterized in that: The expansion structure (300) comprises a second fixed plate (301), the top of the second fixed plate (301) is fixedly connected to the cylinder body of the electric telescopic cylinder (2), and movable plates (302) are slidably connected to the inside of both sides of the second fixed plate (301), the second fixed plate (301) and the two groups of movable plates (302) cooperate with each other to form a protective cover, and when the two groups of movable plates (302) move away from each other, they are used to expand the protective range of the protective cover formed by the second fixed plate (301) and the two groups of movable plates (302).

3. The cutting device for processing a fan housing according to claim 2, characterized in that: A sliding groove for the movable plate (302) to slide is provided inside the second fixed plate (301), and a clamping groove and a clamping block for limiting are provided inside the second fixed plate (301) and on the surface of the movable plate (302).

4. The cutting device for processing a fan housing according to claim 1, characterized in that: Telescopic plates (22) are slidably connected to the inside of both sides of the first fixed plate (21), a linear groove for the telescopic plate (22) to slide is provided inside the first fixed plate (21), a return spring for driving the telescopic plate (22) to move is provided inside the first fixed plate (21), and the side surfaces of the telescopic plates (22) slidably connected to the inside of the movable plate (302) are arranged to abut against each other.

5. The cutting device for processing a fan housing according to claim 1, characterized in that: The piston rod of the electric telescopic cylinder (2) passes through the middle of the second fixed plate (301) and the movable plate (302) in sequence and is fixedly connected to the top of the first fixed plate (21); when the piston rod of the electric telescopic cylinder (2) does not move, the two telescopic plates (22) are in a state of being close to each other inside the first fixed plate (21); when the piston rod of the electric telescopic cylinder (2) moves, the two telescopic plates (22) are in a state of being far away from each other inside the first fixed plate (21).

6. The cutting device for processing a fan housing according to claim 1, characterized in that: When the first fixed plate (21) is close to the inner side of the second fixed plate (301), the two groups of movable plates (302) slidably connected inside the second fixed plate (301) are in a state of being close to each other; when the first fixed plate (21) is far away from the inner side of the second fixed plate (301), the two groups of movable plates (302) slidably connected inside the second fixed plate (301) are in a state of being far away from each other.

7. The cutting device for processing a fan housing according to claim 2, characterized in that: The second fixed plate (301) is arranged in an n-shape, the movable plates (302) slidably connected inside the two sides of the second fixed plate (301) are arranged in an n-shape, and baffles are arranged on the sides of the two groups of movable plates (302) that are away from each other.

8. The cutting device for processing a fan housing according to claim 1, characterized in that: The air blowing and heat dissipation structure (400) comprises a swing plate (404); a side of the swing plate (404) facing the electric telescopic cylinder (2) is hingedly arranged with the bottom of the first fixed plate (21); a side of the swing plate (404) away from the first fixed plate (21) is hingedly arranged with the movable plate (302); a dust shield (405) for shielding dust is fixedly connected to the inner side of the movable plate (302); a guide tube (402) for guiding wind is fixedly connected to a side surface of the swing plate (404) facing the cutting structure (5); a plurality of fans (401) are respectively fixedly connected to a side surface of the swing plate (404) facing the cutting structure (5); and a filter screen (403) for blocking debris is fixedly connected to a side of the guide tube (402) away from the swing plate (404).

9. The cutting device for processing a fan housing according to claim 1, characterized in that: When the first fixed plate (21) is close to the second fixed plate (301), the bottom of the first fixed plate (21) and the swing plate (404) hinged to the inner side of the movable plate (302) are in a tilted state. When the swing plate (404) is in a tilted state, the air blown by the fan (401) can blow air toward the side of the cutting structure (5) through the cooperation of the guide tube (402) and the filter screen (403). When the first fixed plate (21) is far away from the second fixed plate (301), the bottom of the first fixed plate (21) and the swing plate (404) hinged to the inner side of the movable plate (302) are in a parallel state. When the swing plate (404) is in a parallel state, the air blown by the fan (401) can be blocked by the cutting structure (5), and the debris can be guided to the four corners of the second fixed plate (301) and under the dust shield (405) for storage.

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