A length cutting device for aluminum pipe of vacuum cleaner

Abstract

The application relates to the technical field of fixed-length cutting, in particular to an aluminum pipe fixed-length cutting equipment for a dust collector, which can realize automatic operation, complete annular cutting through aluminum pipe rotary motion, only exert force on the local pipe material at the cutting point, well maintain the roundness of the thin-wall pipe material, uniformly distribute heat input in the cutting process, generate less slag, balance the stress of the cutting saw blade, lower the load, prolong the service life, and can be suitable for processing of large-diameter or thick-wall pipe materials, and the equipment comprises a base and a circumferential cutting unit, three supporting frames are arranged in the base, the circumferential cutting unit comprises a middle mounting frame and two side mounting frames, the middle mounting frame and the two side mounting frames are slidably connected to the three supporting frames, abutting driving wheels are rotatably arranged on the two side mounting frames, a cutting saw blade is rotatably arranged on the middle mounting frame, frequency conversion motors are arranged on the middle mounting frame and the two side mounting frames, and the three frequency conversion motors are used for driving rotation of the cutting saw blade and the two abutting driving wheels.

Description

Technical Field

[0001] This invention relates to the field of fixed-length cutting technology, specifically to a fixed-length cutting device for aluminum tubes used in vacuum cleaners. Background Technology

[0002] As is well known, the aluminum tube cutting equipment for vacuum cleaners is an auxiliary device used for the blanking and processing of thin-walled aluminum tubes for vacuum cleaners. It integrates feeding, clamping, fixed length detection, cutting and blanking chip removal functions, realizing the automated batch cutting and blanking of vacuum cleaner aluminum tubes.

[0003] A search revealed that Chinese Patent Publication No. CN222405947U discloses a circular saw machine for cutting steel pipes to a fixed length. The machine is described as follows: It includes a base, a table horizontally welded to the upper surface of the base, a bearing seat welded to the upper surface of the table, a rotating shaft horizontally inserted into the bearing seat, a drive motor welded to the rotating shaft, and a circular saw blade mounted on the transmission end of the drive motor. A rectangular groove is machined through the upper surface of the table, and rollers are evenly spaced along the sidewalls of the rectangular groove. A base is also welded to the upper surface of the table, a tensioning screw is vertically installed through the upper end face of the base, and a pressure plate is welded to the lower end face of the tensioning screw. A positioning and conveying mechanism is provided on the rear side of the upper surface of the table. The positioning and conveying mechanism includes rack and pinion tracks, and the upper surfaces of the two rack and pinion tracks... A Chinese patent publication number CN218694376U discloses a steel pipe fixed-length cutting device, which includes a base plate. A motor is fixedly installed on the bottom left side of the base plate. A threaded rod is fixedly installed on the output end of the motor. A threaded block is connected to the external thread of the threaded rod. A fixed-length plate is fixedly installed on the top of the threaded block. A fixed frame is fixedly installed on the top of the base plate and near its right side. Hydraulic rods are fixedly installed on the upper and lower sides of the inner wall of the fixed frame. A fixed block is fixedly installed on the other end of the hydraulic rod. A collection box is fixedly installed on the bottom of the support plate and near its right side. A collection pipe is fixedly installed in the middle of the bottom of the collection box. During use, it realizes automatic adjustment of the cutting position of the steel pipe, thereby ensuring the fixed-length cutting of the steel pipe.

[0004] While the aforementioned existing technical solutions can achieve fixed-length pipe cutting, the cutting process involves the saw blade entering from one side of the pipe and cutting through radially in one stroke. As the blade continuously applies force to one side of the pipe, the pipe is easily flattened and deformed under unilateral compression. During the cutting process, the heat input in the areas cut successively is uneven, which can easily lead to uneven bevels or excessive slag in hot cutting conditions. Since the blade needs to cut through the entire pipe in one go, the blade load is high and the wear rate is fast. It is also not suitable for large-diameter pipes. Summary of the Invention

[0005] To address the problems in the existing technology, this invention provides a fixed-length aluminum tube cutting device for vacuum cleaners. It can be used with aluminum tubes to achieve automated fixed-length cutting operations. The circular cutting is completed by the rotational motion of the aluminum tube. The cutting point only applies force to the local area of ​​the tube. Thin-walled tubes can also maintain their roundness well. The heat input is evenly distributed during the cutting process, resulting in less slag. The cutting saw blade is evenly stressed, has a low load, and a longer service life. It can also be adapted to the processing of large-diameter or thick-walled tubes.

[0006] The technical solution adopted by this invention to solve its technical problem is: a fixed-length cutting device for aluminum tubes used in vacuum cleaners, comprising a base and a circumferential cutting unit. Three support frames are installed inside the base. The circumferential cutting unit includes a central mounting frame and two side mounting frames. The central mounting frame and the two side mounting frames are slidably connected to the three support frames. Abutment drive wheels are rotatably mounted on each of the two side mounting frames. A cutting saw blade is rotatably mounted on the central mounting frame. Variable frequency motors are installed on both the central mounting frame and the two side mounting frames. The three variable frequency motors are used to drive the rotation of the cutting saw blade and the two abutment drive wheels. An electric telescopic rod is installed outside the support frame in the middle position. The electric telescopic rod is used to drive the sliding of the central mounting frame and the two side mounting frames on the base. A fixed-length limiting frame is rotatably connected to the left end of the left support frame. The fixed-length limiting frame is drively connected to the left side mounting frame. Clamping structures are installed on all three support frames.

[0007] Specifically, the actuator of the electric telescopic rod is connected to a synchronization bar frame, the synchronization bar frame is fixedly connected to a transmission column and two transmission rods, the transmission column is fixedly connected to the middle mounting frame, the two transmission rods are slidably connected to transmission cylinders, the two transmission cylinders are respectively fixedly connected to the two side mounting frames, and the two transmission cylinders are each fixedly connected to an adjusting spring, the two adjusting springs are respectively fixedly connected to the two transmission rods.

[0008] Specifically, each of the three clamping structures includes a rotating cylinder and an adjusting assembly. A sliding cylinder is rotatably connected to the outside of each of the three rotating cylinders. The three sliding cylinders are slidably mounted on the three support frames. A main swing frame, a first auxiliary swing frame, and a second auxiliary swing frame are rotatably connected inside each of the three rotating cylinders. A main pressure wheel is rotatably connected inside each of the three main swing frames. A servo motor is mounted on each of the three main swing frames, and the servo motors are used to drive the rotation of the three main pressure wheels. An auxiliary pressure wheel is rotatably connected inside each of the three first auxiliary swing frames and the three second auxiliary swing frames. An electric adjusting rod is mounted outside each of the three sliding cylinders. The three electric adjusting rods drive the three main swing frames, the three first auxiliary swing frames, and the three second auxiliary swing frames. The three adjusting assemblies are all installed inside the base and are used to adjust the position of the three sliding cylinders.

[0009] Specifically, each of the three adjustment components includes a threaded post, each of the three threaded posts is rotatably connected to a connecting seat, each of the three connecting seats is fixedly connected to the base, each of the three threaded posts is threadedly connected to a threaded sleeve, and each of the three threaded sleeves is fixedly connected to the three sliding cylinders respectively.

[0010] Specifically, each of the three electric adjusting rods is fixedly connected to a connecting frame, each of the three connecting frames is fixedly connected to a drive ring, each of the three drive rings is rotatably connected to a rotating ring, and each of the three rotating rings is fixedly connected to three drive rods. The main swing frame, the first auxiliary swing frame, and the second auxiliary swing frame are all provided with strip-shaped openings, and the three drive rods pass through the three strip-shaped openings respectively.

[0011] Specifically, the central mounting bracket and the two side mounting brackets are all fixedly connected to shaft sleeves, and each of the three shaft sleeves is rotatably connected to a mounting shaft. The cutting saw blade and the two abutment drive wheels are respectively mounted on the three mounting shafts. Driven pulleys are mounted on the three mounting shafts and the three main clamping wheels. Drive pulleys are mounted on the execution shafts of the three variable frequency motors and the three servo motors. The six drive pulleys are respectively connected to the six driven pulleys for transmission.

[0012] Specifically, the fixed-length limiting frame is provided with a threaded section, and an inner pressing bolt and an outer pressing bolt are threadedly connected to the threaded section. A rotating disk is connected between the inner pressing bolt and the outer pressing bolt. The rotating disk has an insertion hole that matches the threaded section. The fixed-length limiting frame is fixedly connected with a lever. The side mounting frame on the left side is rotatably connected with a lever, and the lever matches the lever.

[0013] Specifically, a limiting rod is fixedly connected to the left side of the support frame on the left side, and the limiting rod matches the actuating rod.

[0014] Specifically, the base is equipped with a sheet metal cover, multiple observation doors, and multiple maintenance doors. The sheet metal cover has a material inlet and a material outlet.

[0015] Specifically, a slag discharge guide plate is fixedly connected inside the base, and a discharge port matching the slag discharge guide plate is provided on the sheet metal cover.

[0016] The beneficial effects of this invention are: (1) The vacuum cleaner aluminum tube fixed length cutting device of the present invention, through the design of the circumferential cutting unit, can drive the aluminum tube to be cut to rotate and cooperate with the aluminum tube to complete the circumferential cutting operation. The aluminum tube rotation driving action and the cutting operation can be executed in sequence, with a high degree of automation and strong practicality.

[0017] (2) The aluminum tube fixed length cutting device for vacuum cleaner described in this invention can clamp and position the aluminum tube to be cut through the design of the clamping structure. While realizing the position constraint of the aluminum tube, it can drive the aluminum tube to feed axially and provide basic support for the rotation of the aluminum tube, so as to ensure the smooth operation of aluminum tube conveying and cutting.

[0018] (3) The aluminum tube cutting device for vacuum cleaners described in this invention can limit the feed stroke of the aluminum tube by setting the fixed length limit frame, so as to ensure the accuracy and reliability of the aluminum tube cutting size. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a three-dimensional structural diagram of the entire invention; Figure 2 For the present invention Figure 1 A magnified schematic diagram of the local structure at point A; Figure 3 This is a three-dimensional structural diagram of the base, support frame, and intermediate mounting frame of the present invention. Figure 4 For the present invention Figure 3 A magnified schematic diagram of the local structure at point B; Figure 5 This is a three-dimensional structural diagram of the rotating cylinder, sliding cylinder, and main swing frame of the present invention. Figure 6 This is a three-dimensional structural schematic diagram of the rotating cylinder, sliding cylinder, and main swing frame of the present invention, partially cut apart. Figure 7 This is a three-dimensional structural diagram of the assembly of the mounting bracket, variable frequency motor, and transmission rod of the present invention. Figure 8 This is a three-dimensional structural diagram showing the disassembled assembly of the rotating cylinder, sliding cylinder, and threaded sleeve of the present invention. Figure 9 This is a three-dimensional structural diagram of the entire invention from another angle; Figure 10 This is a three-dimensional structural diagram of the side mounting frame, the drive wheel, and the cutting saw blade of the present invention. Figure 11 For the present invention Figure 10 A magnified schematic diagram of the structure at point C in the middle; Figure 12 This is a three-dimensional structural diagram of the mating of the threaded column, the rotating coupling seat, and the drive rod of the present invention; Figure 13 This is a three-dimensional structural diagram showing the disassembled components of the drive ring, rotating ring, and drive rod of the present invention. Figure 14This is a three-dimensional structural schematic diagram showing a partial cross-section of the base, support frame, and side mounting frame of the present invention. Figure 15 This is a three-dimensional structural diagram of the transmission rod, transmission cylinder, and adjusting spring of the present invention. Figure 16 This is an exploded view of another structure of the rotating disk of the present invention; Figure 17 This is a schematic diagram of the structure of the present invention, which uses an electric rod to replace the adjusting thread section.

[0021] In the diagram: 1. Base; 2. Support frame; 3. Middle mounting frame; 4. Side mounting frame; 5. Drive wheel; 6. Cutting saw blade; 7. Variable frequency motor; 8. Electric telescopic rod; 9. Length limiting frame; 10. Synchronous bar frame; 11. Transmission column; 12. Transmission rod; 13. Transmission cylinder; 14. Adjusting spring; 15. Rotating cylinder; 16. Sliding cylinder; 17. Main swing frame; 18. First auxiliary swing frame; 19. Second auxiliary swing frame; 20. Main clamping wheel; 21. Servo motor; 22. Auxiliary clamping wheel; 23. Electric adjusting rod; 24. Screw 25. Threaded column; 26. Rotary connecting seat; 27. Threaded sleeve; 28. Connecting frame; 29. ​​Drive ring; 30. Rotating ring; 31. Drive rod; 32. Shaft mounting sleeve; 33. Mounting shaft; 34. Drive pulley; 35. Threaded section; 36. Inner pressing bolt; 37. Outer pressing bolt; 38. Rotating disc; 39. Actuating rod; 40. Limiting rod; 41. Sheet metal cover; 42. Observation door; 43. Maintenance door; 44. Feed inlet; 45. Discharge outlet; 46. Slag discharge guide plate; 47. Discharge port; 48. Actuating wheel. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] Example

[0024] Please see Figures 1-17A vacuum cleaner aluminum tube length cutting device includes a base 1 and a circumferential cutting unit. Three support frames 2 are installed inside the base 1, and a sheet metal cover 41, multiple observation doors 42, and multiple maintenance doors 43 are installed outside the base 1. The sheet metal cover 41 has an inlet 44 and an outlet 45. During cutting, the aluminum tube enters through the inlet 44, is cut, and then exits through the outlet 45. A slag discharge guide plate 46 is fixedly connected inside the base 1, and a discharge port 47 matching the slag discharge guide plate 46 is provided on the sheet metal cover 41. Slag generated during cutting is guided by the slag discharge guide plate 46 and discharged through the discharge port 47. The circumferential cutting unit includes a central mounting frame 3 and two side mounting frames 4, which are slidably connected to the three support frames 2. A drive wheel 5 is rotatably mounted on each of the two side mounting frames 4, and a cutting saw blade is rotatably mounted on the central mounting frame 3. 6. A variable frequency motor 7 is installed on the central mounting bracket 3 and the two side mounting brackets 4. A shaft mounting sleeve 31 is fixedly connected to the central mounting bracket 3 and the two side mounting brackets 4. A mounting shaft 32 is rotatably connected inside each of the three shaft mounting sleeves 31. The cutting saw blade 6 and the two abutment drive wheels 5 are respectively installed on the three mounting shafts 32. A driven pulley 33 is installed on each of the three mounting shafts 32 and the three main pressure wheels 20. A drive pulley 34 is installed on the execution shafts of the three variable frequency motors 7 and the three servo motors 21. The six drive pulleys 34 are respectively connected to the six driven pulleys 33. The three variable frequency motors 7 are used to drive the rotation of the cutting saw blade 6 and the two abutment drive wheels 5. Through the design of the circumferential cutting unit, it can drive the aluminum tube to be cut to rotate and cooperate with the aluminum tube to complete the circumferential cutting operation. The aluminum tube rotation drive action and the cutting operation can be executed in sequence, with a high degree of automation and strong practicality.

[0025] It should be further explained that an electric telescopic rod 8 is installed outside the support frame 2 in the middle position. The actuator of the electric telescopic rod 8 is connected to a synchronous bar frame 10. The synchronous bar frame 10 is fixedly connected to a transmission column 11 and two transmission rods 12. The transmission column 11 is fixedly connected to the middle mounting frame 3. Both transmission rods 12 are slidably connected to transmission cylinders 13. The two transmission cylinders 13 are fixedly connected to the two side mounting frames 4 respectively, and each of the two transmission cylinders 13 is fixedly connected to an adjusting spring 14. The two adjusting springs 14 are fixedly connected to the two transmission rods 12 respectively. The electric telescopic rod 8 is used for the sliding drive of the middle mounting frame 3 and the two side mounting frames 4 on the base 1. The left end of the support frame 2 on the left side is rotatably connected to a length limiting frame 9. The positioning frame 9 is connected to the left side mounting frame 4 via a transmission. The fixed-length limiting frame 9 is provided with a threaded section 35, on which an inner pressing bolt 36 and an outer pressing bolt 37 are threadedly connected. A rotating disk 38 is connected between the inner pressing bolt 36 and the outer pressing bolt 37. The rotating disk 38 has an insertion hole that matches the threaded section 35. The fixed-length limiting frame 9 is fixedly connected to a lever 39. The left side mounting frame 4 is rotatably connected to a lever 48, which matches the lever 39. The left side of the support frame 2 is fixedly connected to a limiting rod 40, which matches the lever 39. By setting the fixed-length limiting frame 9, the feed stroke of the aluminum tube can be limited, ensuring the accuracy and reliability of the aluminum tube cutting dimensions.

[0026] Furthermore, each of the three support frames 2 is equipped with a clamping structure, which includes a rotating cylinder 15 and an adjusting component. A sliding cylinder 16 is rotatably connected to the outside of each of the three rotating cylinders 15, and the three sliding cylinders 16 are slidably mounted on the three support frames 2 respectively. A main swing frame 17, a first auxiliary swing frame 18, and a second auxiliary swing frame 19 are rotatably connected inside each of the three rotating cylinders 15. A main pressure wheel 20 is rotatably connected inside each of the three main swing frames 17. A servo motor 21 is mounted on each of the three main swing frames 17, and the three servo motors 21 are used to drive the rotation of the three main pressure wheels 20 respectively. Auxiliary pressure wheels 22 are rotatably connected inside each of the three first auxiliary swing frames 18 and the three second auxiliary swing frames 19. An electric adjusting rod 23 is mounted outside each of the three sliding cylinders 16. The three electric adjusting rods 23 drive the three main swing frames 17, the three first auxiliary swing frames 18, and the three second auxiliary swing frames 19 respectively. All three adjusting components are installed inside the base 1. Three adjustment components are used to adjust the position of the three sliding cylinders 16. Each of the three adjustment components includes a threaded post 24. Each of the three threaded posts 24 is rotatably connected to a connecting seat 25. Each of the three connecting seats 25 is fixedly connected to the base 1. Each of the three threaded posts 24 is threadedly connected to a threaded sleeve 26. Each of the three threaded sleeves 26 is fixedly connected to the three sliding cylinders 16. Each of the three electric adjustment rods 23 is fixedly connected to a connecting frame 27. Each of the three connecting frames 27 is fixedly connected to a drive ring 28. Each of the three drive rings 28 is rotatably connected to a rotating ring 29. Each of the three rotating rings 29 is fixedly connected to a drive rod 30. The main swing frame 17, the first auxiliary swing frame 18, and the second auxiliary swing frame 19 are all provided with slots. Each of the three drive rods 30 passes through a slot. Through the design of the clamping structure, the aluminum tube to be cut can be clamped and positioned. While constraining the position of the aluminum tube, it can drive the axial feed of the aluminum tube and provide basic support for the rotation of the aluminum tube, ensuring the smooth operation of aluminum tube conveying and cutting.

[0027] The variable frequency motor 7, electric telescopic rod 8, servo motor 21, and electric adjusting rod 23 in this embodiment are all conventional devices known to those skilled in the art and purchased from the market. In this solution, we only use them without making any improvements to their structure and function. Their setting method, installation method, and electrical connection method can be easily explained by those skilled in the art by following the instructions for use. Therefore, we will not elaborate on them here.

[0028] In summary, the working principle of this vacuum cleaner aluminum tube length cutting device is as follows: Before use, control circuits are installed for the variable frequency motor 7, electric telescopic rod 8, servo motor 21, and electric adjusting rod 23. Controllers and sensors are connected to these control circuits to control the power supply and detect the operating status of the variable frequency motor 7, electric telescopic rod 8, servo motor 21, and electric adjusting rod 23. After initial setup and debugging, the electric adjusting rod 23 is controlled to extend and retract, causing the connecting frame 27 and drive ring 28 to move synchronously. The rotating ring 29 inside the drive ring 28 moves accordingly and, through the three built-in drive rods 30, synchronously drives the adapted main swing frame 17, the first auxiliary swing frame 18, and the second auxiliary swing frame 19. This causes the main pressing wheel 20 and the two auxiliary pressing wheels 22, located in the same rotating cylinder 15, to move synchronously. The synchronously moving main pressing wheel 20 and the two auxiliary pressing wheels 22 are then moved away from each other, causing the main pressing wheel 20 and the two auxiliary pressing wheels 22 to move synchronously. There is space between the clamping rollers 22 to allow the aluminum tube to be inserted. The aluminum tube to be processed is then horizontally fed into the equipment from the feed port 44. During the insertion of the aluminum tube, the aluminum tube should be controlled to pass through the three main clamping rollers 20 in sequence. Then, the electric adjusting rod 23 is operated to control the main clamping rollers 20 and the two auxiliary clamping rollers 22 in the same rotating cylinder 15 to move closer to each other until the aluminum tube is clamped. Similarly, other electric adjusting rods 23 are controlled to make the main clamping rollers 20 and the two auxiliary clamping rollers 22 in other groups clamp the aluminum tube, clamping and fixing the aluminum tube from multiple points around the circumference. During the above operation, the relative distance between the main clamping rollers 20 and the two auxiliary clamping rollers 22 in the same group and between the two auxiliary clamping rollers 22 should be controlled to ensure that the aluminum tube can be inserted smoothly while preventing the aluminum tube from slipping out from the gap between the main clamping rollers 20 and the auxiliary clamping rollers 22 and between the two auxiliary clamping rollers 22, thus ensuring the smooth progress of the aluminum tube insertion and clamping operation.

[0029] After the aluminum tube is clamped and positioned, according to the cutting size requirements, rotate the inner clamping bolt 36 and the outer clamping bolt 37 to adjust and lock the position of the rotating disk 38 on the threaded section 35, thereby limiting the maximum feed stroke of the aluminum tube. Here, the inner clamping bolt 36 and the outer clamping bolt 37 cooperate to limit the rotating disk 38. Alternatively, an electric lever can be used to replace the structure of the threaded section 35, the inner clamping bolt 36, and the outer clamping bolt 37, allowing the rotating disk 38 to be adjusted to achieve the limit stroke via the electric lever, as shown in the attached figure. Figure 17The diagram shows a structure where the adjusting thread section 35 is replaced by an electric rod. During feeding, the electric telescopic rod 8 is driven to extend and retract synchronously. The actuator of the electric telescopic rod 8 drives the synchronous frame 10 to move forward as a whole. The synchronous frame 10 slides and propels directly against the central mounting frame 3 through the transmission column 11. At the same time, through the elastic transmission structure of the transmission rod 12, the adjusting spring 14 and the transmission cylinder 13, the two side mounting frames 4 slide synchronously, so that the cutting saw blade 6 and the abutment drive wheel 5 approach the outer wall of the aluminum tube synchronously. During this process, the sliding of the left side mounting frame 4 can drive the actuating wheel 48 to move forward synchronously. The forward-moving actuating wheel 48 moves forward and moves the limiting position of the actuating rod 39, thereby causing the rotating disk 38 to rotate. When the actuating rod 39 passes the rotation displacement limiting rod 40, the rotating disk 38 rotates and falls to the limit position. The rotating disk 38 at this position is exactly aligned with the self-discharge. The aluminum tube extending from the outlet 45 forms a limit. At the same time, the servo motor 21 drives the main clamping wheel 20 to rotate through the belt drive structure of the corresponding drive pulley 34 and driven pulley 33. With the auxiliary clamping wheel 22 assisting in the limiting action, the aluminum tube is driven to feed to the left along the axial direction. When the aluminum tube extends from the outlet 45, the rotating disk 38 just rotates and falls into place. When the end of the aluminum tube abuts against the rotating disk 38, the feed of the aluminum tube is restricted, and the torque on the servo motor 21 increases. This indicates that the aluminum tube has been delivered to the correct position, and the servo motor 21 enters a parking state to limit the position of the aluminum tube. If a corresponding sensor is installed during the assembly and debugging stage, the delivery status of the aluminum tube can also be determined by the sensor parameters. At this time, the sensor detects the arrival signal of the aluminum tube in real time and feeds it back to the controller. The controller immediately controls the servo motor 21 to stop the feeding action and complete the fixed-length positioning of the aluminum tube.

[0030] When the rotating disc 38 rotates and falls into place, the electric telescopic rod 8 continues to operate, driving the central mounting bracket 3 and the side mounting bracket 4 to move forward synchronously. The two abutment drive wheels 5 will first contact the outer wall of the aluminum tube. Then, the two variable frequency motors 7 on both sides operate synchronously, causing the two abutment drive wheels 5 to rotate synchronously. Because the abutment drive wheels 5 are in contact with the outer wall of the aluminum tube and form friction transmission, the rotating abutment drive wheels 5 can drive the aluminum tube to rotate circumferentially. Since the central mounting bracket 3 is positioned further back than the side mounting brackets 4 on both sides, after the two abutment drive wheels 5 contact the outer wall of the aluminum tube, the cutting saw blade 6 has not yet made contact with the aluminum tube. When the aluminum tube enters the rotating state, the variable frequency motor 7 in the middle position is started, causing the variable frequency motor 7 to drive the cutting saw blade 6 to rotate. When the cutting saw blade 6 enters the rotating state... After the cutting speed is reached, the electric telescopic rod 8 continues to provide forward thrust to the central mounting bracket 3 and the two side mounting brackets 4. Because the aluminum tube exerts a counterforce on the abutment drive wheels 5, the two abutment drive wheels 5 will not move further forward, and the corresponding two adjusting springs 14 are elastically compressed. Meanwhile, the cutting saw blade 6 continues to move forward and cuts into the outer wall of the aluminum tube. Relying on the continuous rotation of the aluminum tube, a circumferential cut is achieved, allowing the cutting force to be evenly distributed at the circumferential cut of the aluminum tube, significantly reducing the degree of compression deformation of the aluminum tube. Until the aluminum tube is completely cut, the electric telescopic rod 8 controls the synchronous frame 10 to move backward, so that the cutting saw blade 6 and the abutment drive wheels 5 separate relative to the aluminum tube to be cut. This is accompanied by the abutment drive wheels 5 moving relative to the aluminum tube... As the aluminum tube gradually moves away, the actuating wheel 48 re-engages with the actuating lever 39, pushing the lever 39 and ultimately causing the rotating disk 38 to rotate away from the limiting position relative to the aluminum tube. Afterward, the leftmost servo motor 21 drives the cut aluminum tube to be discharged from the discharge port 47, completing the unloading operation. Simultaneously, other servo motors 21 (excluding the left one) operate to further feed the aluminum tube to be cut. At the same time, the electric telescopic rod 8 again controls the central mounting bracket 3 and the two side mounting brackets 4 to move forward synchronously until the aluminum tube is cut again. This process is repeated until the entire aluminum tube is cut. During the entire cutting process, the generated aluminum shavings fall onto the upper inclined surface of the slag discharge guide plate 46 under gravity. Through the inclined guiding action of the slag discharge guide plate 46, aluminum chips are finally discharged from the discharge port 47, completing the automatic chip removal operation. Before the aluminum tube is positioned and clamped, the overall position of the clamping structure can be adjusted according to the specifications of the aluminum tube diameter by rotating the threaded column 24 in the base 1, which drives the threaded sleeve 26 to slide horizontally along the support frame 2, so as to adapt to the processing requirements of aluminum tubes of different diameters. Since the rotating disk 38 will directly contact the left end of the aluminum tube when it limits the aluminum tube, and the aluminum tube will rotate relative to the rotating disk 38 during the cutting process, the rotating disk 38 should be made of wear-resistant material to extend its service life. Alternatively, a center hole can be opened on the rotating disk 38, and a rotating plate can be installed in the center hole through a bearing.When the aluminum tube is contacted and limited, the transfer plate directly contacts the aluminum tube. Furthermore, as the aluminum tube rotates, the transfer plate can rotate synchronously with it to reduce frictional wear. An exploded view of this part of the structure is attached. Figure 16 As shown.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for cutting aluminum tubes for vacuum cleaners to a fixed length, characterized in that, It includes a base (1) and a circumferential cutting unit, wherein three support brackets (2) are installed inside the base (1); The circumferential cutting unit includes a central mounting frame (3) and two side mounting frames (4). The central mounting frame (3) and the two side mounting frames (4) are slidably connected to three support frames (2). Abutment drive wheels (5) are rotatably mounted on each of the two side mounting frames (4). A cutting saw blade (6) is rotatably mounted on the central mounting frame (3). A variable frequency motor (7) is mounted on the central mounting frame (3) and the two side mounting frames (4). The three variable frequency motors (7) are used to drive the rotation of the cutting saw blade (6) and the two abutment drive wheels (5). An electric telescopic rod (8) is installed on the outside of the support frame (2) in the middle position. The electric telescopic rod (8) is used to drive the middle mounting frame (3) and the two side mounting frames (4) to slide on the base (1). The left end of the support frame (2) on the left side is rotatably connected to a fixed length limiting frame (9). The fixed length limiting frame (9) is connected to the left side mounting frame (4) in a transmission manner. Clamping structures are installed on all three support frames (2).

2. The vacuum cleaner aluminum tube length cutting device according to claim 1, characterized in that: The actuator of the electric telescopic rod (8) is connected to a synchronous bar frame (10). The synchronous bar frame (10) is fixedly connected to a transmission column (11) and two transmission rods (12). The transmission column (11) is fixedly connected to the middle mounting frame (3). The two transmission rods (12) are slidably connected to transmission cylinders (13). The two transmission cylinders (13) are fixedly connected to the two side mounting frames (4) respectively. The two transmission cylinders (13) are fixedly connected to adjusting springs (14). The two adjusting springs (14) are fixedly connected to the two transmission rods (12) respectively.

3. The vacuum cleaner aluminum tube length cutting device according to claim 2, characterized in that: Each of the three clamping structures includes a rotating cylinder (15) and an adjusting component. Each of the three rotating cylinders (15) is rotatably connected to a sliding cylinder (16). Each of the three sliding cylinders (16) is slidably mounted on one of the three support frames (2). Each of the three rotating cylinders (15) is rotatably connected to a main swing frame (17), a first auxiliary swing frame (18), and a second auxiliary swing frame (19). Each of the three main swing frames (17) is rotatably connected to a main pressure wheel (20). Each of the three main swing frames (17) is equipped with a servo motor (21). Each of the three servo motors (21) is used to drive the rotation of the three main pressure wheels (20). Each of the three first auxiliary swing frames (18) and the three second auxiliary swing frames (19) is rotatably connected with an auxiliary pressure wheel (22). Each of the three sliding cylinders (16) is equipped with an electric adjustment rod (23). The three electric adjustment rods (23) drive the three main swing frames (17), the three electric adjustment rods (23) drive the three first auxiliary swing frames (18), and the three electric adjustment rods (23) drive the three second auxiliary swing frames (19). The three adjustment components are installed in the base (1) and are used to adjust the position of the three sliding cylinders (16).

4. The vacuum cleaner aluminum tube length cutting device according to claim 3, characterized in that: All three adjustment components include threaded columns (24), all three threaded columns (24) are rotatably connected to a rotating seat (25), all three rotating seats (25) are fixedly connected to the base (1), all three threaded columns (24) are threadedly connected to a threaded sleeve (26), and the three threaded sleeves (26) are respectively fixedly connected to the three sliding cylinders (16).

5. The vacuum cleaner aluminum tube length cutting device according to claim 4, characterized in that: The actuators of the three electric adjusting rods (23) are all fixedly connected to the connecting frame (27), the three connecting frames (27) are all fixedly connected to the drive ring (28), the three drive rings (28) are all rotatably connected to the rotating ring (29), and the three rotating rings (29) are all fixedly connected to the three drive rods (30). The main swing frame (17), the first auxiliary swing frame (18) and the second auxiliary swing frame (19) are all provided with strip-shaped openings, and the three drive rods (30) pass through the three strip-shaped openings respectively.

6. The vacuum cleaner aluminum tube length cutting device according to claim 5, characterized in that: The central mounting bracket (3) and the two side mounting brackets (4) are all fixedly connected with shaft sleeves (31). The three shaft sleeves (31) are rotatably connected with mounting shafts (32). The cutting saw blade (6) and the two abutting drive wheels (5) are respectively mounted on the three mounting shafts (32). The three mounting shafts (32) and the three main pressing wheels (20) are all equipped with driven pulleys (33). The execution shafts of the three variable frequency motors (7) and the three servo motors (21) are all equipped with drive pulleys (34). The six drive pulleys (34) are respectively connected to the six driven pulleys (33) for transmission.

7. The vacuum cleaner aluminum tube length cutting device according to claim 6, characterized in that: The fixed length limiting frame (9) is provided with a threaded section (35), and an inner pressing bolt (36) and an outer pressing bolt (37) are threadedly connected to the threaded section (35). A rotating disk (38) is connected between the inner pressing bolt (36) and the outer pressing bolt (37). The rotating disk (38) has an insertion hole that matches the threaded section (35). The fixed length limiting frame (9) is fixedly connected with a toggle rod (39). The side mounting frame (4) on the left side is rotatably connected with a toggle wheel (48). The toggle wheel (48) matches the toggle rod (39).

8. The vacuum cleaner aluminum tube length cutting device according to claim 7, characterized in that: A limiting rod (40) is fixedly connected to the left side of the support frame (2) on the left side, and the limiting rod (40) matches the actuating rod (39).

9. A vacuum cleaner aluminum tube length cutting device according to claim 8, characterized in that: The base (1) is equipped with a sheet metal cover (41), multiple observation doors (42) and multiple maintenance doors (43). The sheet metal cover (41) has a feed inlet (44) and a discharge outlet (45).

10. A vacuum cleaner aluminum tube length cutting device according to claim 9, characterized in that: The base (1) is fixedly connected to a slag discharge guide plate (46), and the sheet metal cover (41) is provided with a discharge port (47) that matches the slag discharge guide plate (46).

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