Pipe end cutting device for plastic-lined pipe

Abstract

The invention relates to the technical field of plastic-lined pipe machining, in particular to a pipe end cutting device for a plastic-lined pipe. According to the pipe end cutting device for the plastic-lined pipe, chipping cleaning operation can be automatically triggered while cutting is conducted, the automation degree and the working efficiency of the device are improved, and energy consumption is reduced. A pipe end cutting device for a plastic-lined pipe comprises a bottom frame, fixing supports, a two-way lead screw, sliding blocks and the like, the fixing supports are connected to the upper sides of the left portion and the right portion of the bottom frame, the two-way lead screw is rotationally connected to the upper portion of the fixing support on the right side, and the sliding blocks are connected to the front portion and the rear portion of the two-way lead screw in a threaded mode. When the saw blade on the electric saw rotates, the first rolling wheel is driven to rotate, so that the connecting column and the impeller rotate, when the impeller rotates, air is driven to flow from top to bottom, the air blowing pipe blows air, chippings at the cutting position of the lining plastic pipe and on the saw blade are blown away, and therefore the situation that the cutting effect is affected due to chipping accumulation is avoided.

Description

Technical Field

[0001] This invention relates to the field of plastic-lined pipe processing technology, and in particular to a pipe end cutting device for plastic-lined pipes. Background Technology

[0002] In the production and processing of plastic-lined pipes, pipe end cutting is a critical step, aiming to provide the required pipe end shape for subsequent connection and assembly operations. During cutting, a large amount of plastic debris is generated. This debris easily accumulates in the cutting area, not only affecting the cutting accuracy and quality, resulting in uneven and rough pipe end surfaces, but also potentially adversely impacting the performance of the plastic-lined pipe in subsequent processes. Furthermore, the accumulated debris also poses a safety threat to operators, necessitating its removal.

[0003] For example, CN220093931U discloses a debris cleaning device for pipe cutting. It includes a base, a debris splash guard on top of the base, and a lifting assembly connecting the base and the debris splash guard. The debris splash guard contains a collecting ramp. A pipe cutting device is fixed inside the base. A rotating disk is located inside the debris splash guard, and a collecting hood is connected to the rotating disk via a telescopic rod. A pipe is inserted into the collecting hood, and an air pump is fitted onto the pipe. One end of the pipe is connected to a dust collection bag. A handle is located below the collecting hood. A limit block is fixed to the surface of the rotating disk. A collecting groove and a collecting frame are located inside the base. A second handle is fixed to one side of the collecting frame. This invention provides a debris cleaning device for pipe cutting that offers protective functions, comprehensive debris collection, and reduces odor spread. However, because this debris cleaning device requires the separate activation of an air pump to clean the debris, the operation is cumbersome, reducing the automation level and efficiency of the device, and it consumes a lot of energy.

[0004] Therefore, a pipe end cutting device for lined pipes has now been developed that can automatically trigger the cleaning of debris while cutting, thereby improving the automation level and working efficiency of the device and reducing energy consumption. Summary of the Invention

[0005] To overcome the shortcomings of existing debris cleaning devices for pipe cutting, which require the separate activation of an air pump to clean debris, making operation cumbersome, reducing the automation level and work efficiency of the device, and consuming a lot of energy, this invention provides a pipe end cutting device for plastic-lined pipes that can automatically trigger debris cleaning operation during cutting, thereby improving the automation level and work efficiency of the device and reducing energy consumption.

[0006] The technical solution is: a pipe end cutting device for plastic-lined pipes, comprising a base frame, a fixed bracket, a bidirectional lead screw, a sliding block, a first motor, a first rotating column, a cutting assembly, an air blowing assembly, a rotating assembly, an air suction assembly, and a cleaning assembly. Fixed brackets are connected to the upper sides of both the left and right sides of the base frame. The upper part of the right fixed bracket is rotatably connected to the bidirectional lead screw, and sliding blocks are threadedly connected to both the front and rear parts of the bidirectional lead screw. Sliding blocks are slidably connected to both the front and rear parts of the left fixed bracket. The left side of the right front sliding block is connected to the first motor. The output shaft of the first motor is connected to the first rotating column. The left side of the first rotating column is rotatably connected to the left front sliding block, and the two rear sliding blocks are also rotatably connected. The device is connected to a first rotating column. A cutting assembly capable of cutting the end of the plastic-lined tube is mounted on the base frame. The cutting assembly is equipped with an air blowing assembly, which in turn is equipped with a rotating assembly. When the rotating assembly operates, it drives the air blowing assembly to blow away debris. The air blowing assembly is equipped with a suction assembly capable of removing debris. The base frame is also equipped with a cleaning assembly capable of cleaning debris. Rotating the bidirectional lead screw moves the sliding block. The distance between the first rotating columns is adjusted according to the diameter of the plastic-lined tube to accommodate plastic-lined tubes of different diameters. After adjustment, the plastic-lined tube is placed between the tops of the first rotating columns. The first motor is started to drive the first rotating columns to rotate, thus rotating the plastic-lined tube for subsequent cutting.

[0007] Furthermore, the cutting assembly includes a second motor, a connecting screw, a moving frame, and an electric saw. The second motor is connected to the upper front side of the base frame, and the connecting screw is connected to the output shaft of the second motor. The connecting screw is rotatably connected to the base frame, and the moving frame is threadedly connected to the connecting screw. The moving frame is slidably connected to the base frame, and the electric saw is connected to the middle of the moving frame. When cutting the end of the plastic-lined pipe, the second motor is started, which drives the connecting screw to rotate, causing the moving frame to move downward, which in turn causes the electric saw to move downward. At the same time, the electric saw is started, causing the saw blade on the electric saw to rotate and cut the end of the plastic-lined pipe.

[0008] Furthermore, the first motor, the second motor, the chainsaw, and the processor are electrically connected via a control module.

[0009] Furthermore, the air blowing assembly includes a housing and an air blowing pipe. The housing is connected to the upper middle part of the movable frame, and the air blowing pipe is connected to the lower right side of the housing.

[0010] Furthermore, the rotating assembly includes a connecting column, a first roller, an impeller, and a scraper. The connecting column is rotatably connected to the middle of the housing, and the first roller is connected to the lower side of the connecting column. The first roller contacts and engages with the saw blade of the electric saw. The impeller is connected to the upper part of the connecting column, and the scraper is connected to the upper side of the connecting column. The scraper is located above the impeller. When the saw blade on the electric saw rotates, it drives the first roller to rotate, causing the connecting column and the impeller to rotate. When the impeller rotates, it drives the air to flow from top to bottom, causing the air blowing pipe to blow air and remove the debris from the cut area of ​​the plastic-lined pipe and the saw blade.

[0011] Furthermore, the air intake assembly includes a collection bucket, a collection box, a filter screen, and an air intake pipe. The collection bucket is connected to the upper right side of the outer casing, and the collection box is snapped onto the collection bucket. The filter screen is connected inside the outer casing, and the connecting column passes through the filter screen. The scraper is located above the filter screen, and the air intake pipe is connected to the upper side of the outer casing. When the impeller rotates, external air enters the outer casing through the air intake pipe, causing the air intake pipe to draw debris into the outer casing. The filter screen intercepts the debris. As the connecting column rotates, it drives the scraper to rotate, causing the scraper to scrape the debris on the filter screen into the collection box inside the collection bucket.

[0012] Furthermore, the collection box is equipped with a handle.

[0013] Furthermore, both the blowing tube and the inhalation tube are gooseneck tubes.

[0014] Furthermore, the cleaning assembly includes a second roller, a second rotating column, a first trigger frame, a belt, a connecting fixing frame, a sliding frame, a sliding hollow frame, a second trigger frame, a second spring, and a brush. The second roller is rotatably connected to the upper right side of the base frame, and is located to the right of the fixing bracket. The second rotating column is rotatably connected to the lower right side of the base frame. The first trigger frame is connected to the left side of the second rotating column. A belt is wound around the second rotating column and the second roller via a transmission wheel. A connecting fixing frame is connected to the lower left side of the base frame. A sliding frame is slidably connected to the connecting fixing frame. A sliding hollow frame is slidably connected to the right side of the connecting fixing frame. The frame is connected to the sliding frame. A second trigger frame is connected to the right side of the sliding hollow frame. The second trigger frame is pressed against the first trigger frame. A second spring is connected between the sliding frame and the connecting fixed frame. A brush is connected to the upper side of the sliding frame. When the plastic-lined tube is placed, the plastic-lined tube contacts the second roller. As the plastic-lined tube rotates, it drives the second roller to rotate. Through belt transmission, the second rotating column and the first trigger frame rotate. The first trigger frame presses against the second trigger frame. Under the action of the second spring, the sliding frame and the sliding hollow frame move left and right on the connecting fixed frame, which in turn causes the brush to move left and right to clean the debris remaining at the cut of the plastic-lined tube.

[0015] Furthermore, it also includes a positioning component, which includes an auxiliary frame and a first spring. The auxiliary frame is slidably connected to both sides of the middle of the moving frame. Multiple first springs are connected between the auxiliary frame and the moving frame. When the moving frame moves downward, it drives the auxiliary frame to move downward. After the auxiliary frame moves down a certain distance, it contacts the plastic-lined tube. It is observed whether the cutting line marked on the plastic-lined tube is between the auxiliary frames, thereby determining whether the electric saw is aligned with the cutting line.

[0016] The beneficial effects are as follows: 1. When the saw blade on the electric saw of the present invention rotates, it drives the first roller to rotate, which causes the connecting column and the impeller to rotate. When the impeller rotates, it drives the air to flow from top to bottom, causing the air blowing pipe to blow air and blow away the debris on the cutting part of the plastic-lined pipe and the saw blade, thereby avoiding the accumulation of debris that affects the cutting effect.

[0017] 2. When the impeller rotates, external air enters the housing through the suction pipe, causing the suction pipe to draw debris into the housing. The filter screen intercepts the debris, thereby maintaining a clean working environment and preventing debris from causing injury to operators.

[0018] 3. In this invention, while the plastic-lined tube rotates, it drives the second roller to rotate. Through belt transmission, the second rotating column and the first trigger frame rotate. The first trigger frame squeezes the second trigger frame. Under the action of the second spring, the sliding frame and the sliding hollow frame move left and right on the connecting fixed frame, thereby causing the brush to move left and right to clean the debris remaining at the cut of the plastic-lined tube, thus ensuring the surface quality of the tube end after cutting.

[0019] 4. As the moving frame moves downward, the auxiliary frame moves downward as well. After the auxiliary frame moves down a certain distance, it comes into contact with the plastic-lined tube. It is observed whether the pre-marked cutting line on the plastic-lined tube is between the auxiliary frames, thereby helping to align the electric saw with the cutting line on the plastic-lined tube.

[0020] 5. This invention allows the sliding block to move by rotating a bidirectional lead screw, and adjusts the distance between the first rotating columns according to the diameter of the plastic-lined pipe, thereby adapting to plastic-lined pipes of different diameters. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0022] Figure 2 This is a cross-sectional view of the first partial three-dimensional structure of the present invention.

[0023] Figure 3 This is a cross-sectional view of the second partial three-dimensional structure of the present invention.

[0024] Component names and numbers in the diagram: 1_Base frame, 2_Fixed bracket, 3_Double-direction lead screw, 31_Sliding block, 4_First motor, 5_First rotating column, 6_Second motor, 7_Connecting lead screw, 8_Moving frame, 9_Electric saw, 10_Auxiliary frame, 11_First spring, 12_Outer shell, 120_Air blowing pipe, 13_Rotating assembly, 130_Connecting column, 131_First roller, 132_Impeller, 133_Scraper, 14_Collection bucket, 140_Collection box, 15_Filter screen, 16_Suction pipe, 17_Second roller, 18_Second rotating column, 19_First trigger frame, 20_Belt, 21_Connecting fixed frame, 22_Sliding frame, 23_Sliding hollow frame, 24_Second trigger frame, 25_Second spring, 26_Brush. Detailed Implementation

[0025] The preferred technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

[0026] A pipe end cutting device for plastic-lined pipes, such as Figures 1-3 As shown, the assembly includes a base frame 1, a fixed bracket 2, a bidirectional lead screw 3, a sliding block 31, a first motor 4, a first rotating column 5, a cutting assembly, an air blowing assembly, a rotating assembly 13, a suction assembly, and a cleaning assembly. Fixed brackets 2 are connected to the upper sides of both the left and right sides of the base frame 1. The upper part of the right fixed bracket 2 is rotatably connected to the bidirectional lead screw 3. Sliding blocks 31 are threadedly connected to both the front and rear parts of the bidirectional lead screw 3. Sliding blocks 31 are slidably connected to both the front and rear parts of the left fixed bracket 2. The left side of the right front sliding block 31 is connected to the first motor 4. The output shaft of the first motor 4 is connected to the first rotating column 5. The left side of the first rotating column 5 is rotatably connected to the left front sliding block 31. The two rear sliding blocks 31 are also rotatably connected to the first rotating column 5. A cutting assembly is mounted on the base frame 1. An air blowing assembly is mounted on the cutting assembly. A rotating assembly 13 is mounted on the air blowing assembly. When the rotating assembly 13 operates, it drives the air blowing assembly to blow away debris. A suction assembly is mounted on the air blowing assembly. A cleaning assembly is also mounted on the base frame 1.

[0027] like Figure 1 and Figure 3 As shown, the cutting assembly includes a second motor 6, a connecting screw 7, a moving frame 8, and an electric saw 9. The second motor 6 is connected to the upper front side of the base frame 1. The connecting screw 7 is connected to the output shaft of the second motor 6. The connecting screw 7 is rotatably connected to the base frame 1. The moving frame 8 is threadedly connected to the connecting screw 7. The moving frame 8 is slidably connected to the base frame 1. The electric saw 9 is connected to the middle of the moving frame 8. The first motor 4, the second motor 6, the electric saw 9, and the processor are electrically connected through a control module.

[0028] like Figures 1-3 As shown, the air blowing assembly includes a housing 12 and an air blowing pipe 120. The housing 12 is connected to the upper side of the middle part of the movable frame 8, and the air blowing pipe 120 is connected to the lower right side of the housing 12.

[0029] like Figures 1-3 As shown, the rotating assembly 13 includes a connecting column 130, a first roller 131, an impeller 132, and a scraper 133. The connecting column 130 is rotatably connected to the middle of the housing 12. The first roller 131 is connected to the lower side of the connecting column 130. The first roller 131 is in contact with the saw blade of the electric saw 9. The impeller 132 is connected to the upper part of the connecting column 130. The scraper 133 is connected to the upper side of the connecting column 130 and is located above the impeller 132.

[0030] like Figures 1-3As shown, the suction assembly includes a collection bucket 14, a collection box 140, a filter screen 15, and a suction pipe 16. The collection bucket 14 is connected to the upper right side of the outer shell 12. The collection box 140 is snapped onto the collection bucket 14. The collection box 140 is provided with a handle for easy handling. The filter screen 15 is connected inside the outer shell 12. The connecting post 130 passes through the filter screen 15. The scraper 133 is located on the upper side of the filter screen 15. The suction pipe 16 is connected to the upper side of the outer shell 12. Both the blowing pipe 120 and the suction pipe 16 are gooseneck tubes, which can be bent and shaped at will.

[0031] like Figure 1 and Figure 3 As shown, the cleaning assembly includes a second roller 17, a second rotating column 18, a first trigger frame 19, a belt 20, a connecting fixing frame 21, a sliding frame 22, a sliding hollow frame 23, a second trigger frame 24, a second spring 25, and a brush 26. The second roller 17 is rotatably connected to the upper right side of the base frame 1, and the second roller 17 is located on the right side of the fixing bracket 2. The second rotating column 18 is rotatably connected to the lower right side of the base frame 1. The first trigger frame 19 is connected to the left side of the second rotating column 18. The second rotating column 18 and the second roller 17... A belt 20 is wound around the transmission wheel. A connecting frame 21 is connected to the lower left side of the base frame 1. A sliding frame 22 is slidably connected to the connecting frame 21. A sliding hollow frame 23 is slidably connected to the right side of the connecting frame 21. The sliding hollow frame 23 is connected to the sliding frame 22. A second trigger frame 24 is connected to the right side of the sliding hollow frame 23. The second trigger frame 24 is pressed and engaged with the first trigger frame 19. A second spring 25 is connected between the sliding frame 22 and the connecting frame 21. A brush 26 is connected to the upper side of the sliding frame 22.

[0032] like Figure 1 As shown, it also includes a positioning component, which includes an auxiliary frame 10 and a first spring 11. The auxiliary frame 10 is slidably connected to both the left and right sides of the middle of the movable frame 8, and each auxiliary frame 10 is connected to the movable frame 8 by two first springs 11.

[0033] When using this invention, the base frame 1 is first placed in the cutting area of ​​the plastic-lined pipe end. The operator uses a wrench or other tools to rotate the bidirectional lead screw 3, causing the sliding block 31 to move. The distance between the first rotating columns 5 is adjusted according to the diameter of the plastic-lined pipe to accommodate plastic-lined pipes of different diameters. After adjustment, the plastic-lined pipe is placed between the tops of the first rotating columns 5. The processor starts the first motor 4 through the control module, driving the first rotating columns 5 to rotate, so that the plastic-lined pipe rotates to facilitate subsequent cutting.

[0034] When cutting the end of the plastic-lined pipe, the processor starts the second motor 6 through the control module, which drives the connecting screw 7 to rotate, causing the moving frame 8 to move downward, which in turn causes the electric saw 9 to move downward. At the same time, the electric saw 9 is started, so that the saw blade on the electric saw 9 rotates to cut the end of the plastic-lined pipe.

[0035] When cutting the plastic-lined pipe, the position of the air blowing port of the air blowing pipe 120 is adjusted according to the cutting position of the plastic-lined pipe. While the saw blade on the electric saw 9 rotates, it drives the first roller 131 to rotate, which causes the connecting column 130 and the impeller 132 to rotate. When the impeller 132 rotates, it drives the air to flow from top to bottom, which causes the air blowing pipe 120 to blow air and blow away the debris at the cutting position of the plastic-lined pipe and on the saw blade, thereby avoiding the accumulation of debris that affects the cutting effect.

[0036] Adjust the position of the air intake port of the air intake pipe 16 according to the cutting position of the plastic-lined pipe. When the impeller 132 rotates, the outside air enters the housing 12 through the air intake pipe 16, so that the air intake pipe 16 sucks the debris into the housing 12, and the filter screen 15 intercepts the debris.

[0037] As the connecting column 130 rotates, it drives the scraper 133 to rotate, causing the scraper 133 to scrape the debris on the filter screen 15 into the collection box 140 inside the collection bucket 14. When the collection box 140 is full, the collection box 140 can be removed from the collection bucket 14 for cleaning, thereby keeping the working environment clean and preventing debris from causing injury to the operator.

[0038] When the plastic-lined tube is placed, it contacts the second roller 17. As the plastic-lined tube rotates, it drives the second roller 17 to rotate. Through the belt 20, the second rotating column 18 and the first trigger frame 19 rotate. The first trigger frame 19 presses against the second trigger frame 24. Under the force of the second spring 25, the sliding frame 22 and the sliding hollow frame 23 move left and right on the connecting fixed frame 21, which in turn causes the brush 26 to move left and right to clean the debris remaining at the cut of the plastic-lined tube, thereby ensuring the surface quality of the tube end after cutting.

[0039] As the moving frame 8 moves downward, it drives the auxiliary frame 10 downward. After the auxiliary frame 10 moves down a certain distance, it contacts the plastic-lined tube. It is observed whether the pre-marked cutting line on the plastic-lined tube is between the auxiliary frames 10, thereby determining whether the electric saw 9 is aligned with the cutting line. When the moving frame 8 continues to move downward, the auxiliary frame 10 stops moving, and the first spring 11 is compressed and contracted. When the moving frame 8 moves upward and resets, the first spring 11 rebounds, causing the auxiliary frame 10 to move downward and reset, thereby assisting in aligning the electric saw 9 with the cutting line on the plastic-lined tube.

[0040] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present application. Therefore, the content of this specification should not be construed as a limitation of the present application.

Claims

1. A pipe end cutting device for a plastic-lined pipe, characterized in that, The system includes a base frame (1), a fixed bracket (2), a two-way lead screw (3), a sliding block (31), a first motor (4), a first rotating column (5), a cutting assembly, an air blowing assembly, a rotating assembly (13), an air suction assembly, and a cleaning assembly. The base frame (1) has fixed brackets (2) connected to the upper sides of both the left and right sides. The upper part of the fixed bracket (2) on the right side is rotatably connected to the two-way lead screw (3). The two-way lead screw (3) has sliding blocks (31) threadedly connected to both the front and rear sides. The fixed bracket (2) on the left side has sliding blocks (31) slidably connected to both the front and rear sides. The left side of the sliding block (31) on the front right side is connected to the first motor (4). The output shaft of the first motor (4) is connected to the first rotating column (5). The left side of the first rotating column (5) is rotatably connected to the sliding block (31) on the front left side. The two sliding blocks at the rear... The blocks (31) are also rotatably connected by a first rotating column (5). The base frame (1) is equipped with a cutting component that can cut the end of the plastic-lined tube. The cutting component is equipped with an air blowing component. The air blowing component is equipped with a rotating component (13). When the rotating component (13) operates, it drives the air blowing component to blow away the debris. The air blowing component is equipped with an air suction component that can suck up the debris. The base frame (1) is also equipped with a cleaning component that can clean up the debris. Rotate the double-acting screw (3) to move the sliding block (31). Adjust the distance between the first rotating columns (5) according to the diameter of the plastic-lined tube to adapt to plastic-lined tubes of different diameters. After adjustment, place the plastic-lined tube between the top of the first rotating columns (5). Start the first motor (4) to drive the first rotating column (5) to rotate, so that the plastic-lined tube rotates to facilitate subsequent cutting.

2. The pipe end cutting device for a plastic-lined pipe according to claim 1, characterized in that, The cutting assembly includes a second motor (6), a connecting screw (7), a moving frame (8), and an electric saw (9). The second motor (6) is connected to the upper front side of the base frame (1). The connecting screw (7) is connected to the output shaft of the second motor (6). The connecting screw (7) is rotatably connected to the base frame (1). The moving frame (8) is threadedly connected to the connecting screw (7). The moving frame (8) is slidably connected to the base frame (1). The electric saw (9) is connected to the middle of the moving frame (8). When cutting the end of the plastic-lined pipe, the second motor (6) is started, which drives the connecting screw (7) to rotate, causing the moving frame (8) to move downward, which in turn causes the electric saw (9) to move downward. At the same time, the electric saw (9) is started, causing the saw blade on the electric saw (9) to rotate and cut the end of the plastic-lined pipe.

3. The pipe end cutting device for a plastic-lined pipe according to claim 2, characterized in that, The first motor (4), the second motor (6), the chainsaw (9), and the processor are electrically connected through a control module.

4. The pipe end cutting device for a plastic-lined pipe according to claim 2, characterized in that, The air blowing assembly includes a housing (12) and an air blowing pipe (120). The housing (12) is connected to the upper middle part of the movable frame (8), and the air blowing pipe (120) is connected to the lower right side of the housing (12).

5. The pipe end cutting device for a plastic-lined pipe according to claim 4, characterized in that, The rotating assembly (13) includes a connecting column (130), a first roller (131), an impeller (132), and a scraper (133). The connecting column (130) is rotatably connected to the middle of the outer casing (12). The first roller (131) is connected to the lower side of the connecting column (130). The first roller (131) is in contact with the saw blade of the electric saw (9). The impeller (132) is connected to the upper part of the connecting column (130). The scraper (133) is connected to the upper side of the connecting column (130). The scraper (133) is located above the impeller (132). When the saw blade on the electric saw (9) rotates, it drives the first roller (131) to rotate, causing the connecting column (130) and the impeller (132) to rotate. When the impeller (132) rotates, it drives the air to flow from top to bottom, causing the air blowing pipe (120) to blow air and remove the debris from the cut of the plastic-lined pipe and the saw blade.

6. The pipe end cutting device for a plastic-lined pipe according to claim 4, characterized in that, The suction assembly includes a collection bucket (14), a collection box (140), a filter screen (15), and a suction pipe (16). The collection bucket (14) is connected to the upper right side of the outer shell (12), and the collection box (140) is snapped onto the collection bucket (14). The filter screen (15) is connected inside the outer shell (12), and the connecting column (130) passes through the filter screen (15). The scraper (133) is located on the upper side of the filter screen (15), and the suction pipe (16) is connected to the upper side of the outer shell (12). When the impeller (132) rotates, external air enters the outer shell (12) through the suction pipe (16), causing the suction pipe (16) to suck the debris into the outer shell (12). The filter screen (15) intercepts the debris. When the connecting column (130) rotates, it drives the scraper (133) to rotate, causing the scraper (133) to scrape the debris on the filter screen (15) into the collection box (140) inside the collection bucket (14).

7. The pipe end cutting device for a plastic-lined pipe according to claim 6, characterized in that, The collection box (140) is equipped with a handle.

8. The pipe end cutting device for a plastic-lined pipe according to claim 6, characterized in that, Both the blowing tube (120) and the inhalation tube (16) are gooseneck tubes.

9. The pipe end cutting device for a plastic-lined pipe according to claim 1, characterized in that, The cleaning assembly includes a second roller (17), a second rotating column (18), a first trigger frame (19), a belt (20), a connecting fixing frame (21), a sliding frame (22), a sliding hollow frame (23), a second trigger frame (24), a second spring (25), and a brush (26). The second roller (17) is rotatably connected to the upper right side of the base frame (1). The second roller (17) is located on the right side of the fixing bracket (2). The second rotating column (18) is rotatably connected to the lower right side of the base frame (1). The first trigger frame (19) is connected to the left side of the second rotating column (18). The belt (20) is wound around the second rotating column (18) and the second roller (17) through a transmission wheel. The connecting fixing frame (21) is connected to the lower left side of the base frame (1). The sliding frame (22) is slidably connected to the connecting fixing frame (21). The sliding hollow frame (23) is slidably connected to the right side of the connecting fixing frame (21). The sliding hollow frame (23) is connected to the sliding frame (22). The right side of the sliding hollow frame (23) is connected to the second trigger frame (24). The second trigger frame (24) is pressed and engaged with the first trigger frame (19). The sliding frame (22) is connected to the connecting fixed frame (21) by a second spring (25). The upper side of the sliding frame (22) is connected to a brush (26). When the plastic-lined tube is placed, the plastic-lined tube contacts the second roller (17). While the plastic-lined tube rotates, it drives the second roller (17) to rotate. The second rotating column (18) and the first trigger frame (19) are rotated by the belt (20). The first trigger frame (19) presses the second trigger frame (24). Under the action of the second spring (25), the sliding frame (22) and the sliding hollow frame (23) move left and right on the connecting fixed frame (21), thereby causing the brush (26) to move left and right to clean the debris remaining at the cut of the plastic-lined tube.

10. The pipe end cutting device for a plastic-lined pipe according to claim 2, characterized in that, It also includes a positioning component, which includes an auxiliary frame (10) and a first spring (11). The auxiliary frame (10) is slidably connected to the left and right sides of the middle of the moving frame (8). Multiple first springs (11) are connected between the auxiliary frame (10) and the moving frame (8). When the moving frame (8) moves downward, it drives the auxiliary frame (10) to move downward. After the auxiliary frame (10) moves down a certain distance, it contacts the plastic-lined tube. It is observed whether the cutting line marked on the plastic-lined tube is between the auxiliary frames (10) to determine whether the electric saw (9) is aligned with the cutting line.

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