A fixed-length cutting device for processing thin-wall stainless steel water pipes

Abstract

The application provides a fixed-length cutting equipment for thin-wall stainless steel water pipe processing, and belongs to the technical field of water pipe processing, which solves the technical problems that the cutting position is easy to deform during the cutting of the existing water pipe, the quality of the water pipe is affected, and raw materials are wasted. The fixed-length cutting equipment for thin-wall stainless steel water pipe processing comprises a rack, a feeding assembly, a cutting mechanism, a fixed-length mechanism and a discharging assembly are sequentially arranged on the rack from left to right, the cutting mechanism comprises a mounting seat, the mounting seat is fixedly connected with the rack, a rotating cylinder is rotatably connected to the inner periphery of the mounting seat, an installation cavity is formed between the rotating cylinder and the mounting seat, a first motor is fixedly arranged in the installation cavity, a first gear is fixed to the output shaft end of the first motor, an outer gear ring meshing with the first gear is fixed to the outer periphery of the rotating cylinder, and a cutting assembly and a polishing assembly are arranged on the rotating cylinder. The application has the advantages of reducing the deformation of the cutting position of the thin-wall stainless steel water pipe, improving the processing quality and reducing the waste of raw materials.

Description

Technical Field

[0001] This invention belongs to the field of water pipe processing technology, and relates to a cutting device, particularly a fixed-length cutting device for processing thin-walled stainless steel water pipes. Background Technology

[0002] Thin-walled stainless steel pipes refer to stainless steel pipes with a wall thickness to outer diameter ratio of no more than 6%. They are lighter in weight while maintaining the same bending and torsional strength, making them widely used in the manufacture of mechanical parts and engineering structures, as well as in furniture and kitchenware. With the advancement of technology, pipe systems are constantly being upgraded, and existing thin-walled stainless steel water pipes are favored by consumers due to their lightweight and durability.

[0003] A search revealed a Chinese patent document disclosing a fixed-length cutting device for PVC drainage pipe production [Application No.: 202020753802.0; Publication No.: CN 212287769 U]. This cutting device includes a workbench with support seats fixed to both sides of its bottom surface by screws. A strip-shaped groove is formed in the center of the top surface of the workbench, and limit grooves are formed on the inner walls of the front and rear ends of the strip-shaped groove. An installation block is slidably connected within the strip-shaped groove, and limit blocks are fixed to the front and rear ends of the installation block. The limit blocks are slidably connected within the limit grooves. A U-shaped plate is fixed to the lower end of the installation block by screws, and gear teeth are fixed to the top surface of the U-shaped plate. A lead screw is rotatably connected between the two support seats through a rolling bearing. A servo motor is also provided on the side of one of the support seats opposite to the center of the workbench. This utility model has a reasonable design, stable operation, and can realize continuous fixed-length cutting of PVC drainage pipes, greatly improving the efficiency of PVC drainage pipe cutting and meeting the needs of rapid production.

[0004] Although the cutting device disclosed in this patent can achieve fixed-length cutting of water pipes, the wall thickness to outer diameter ratio of thin-walled stainless steel pipes is no more than 6%, so the wall thickness of thin-walled stainless steel water pipes is generally very thin, which limits the strength of the water pipe. During cutting, the pressure of the cutting blade and the clamping components cause deformation at the cutting and clamping points, affecting the processing quality of the water pipe. Furthermore, the cutting points need to be ground afterward. In order to ensure the quality of the water pipe, the deformed points will be ground, which will result in a large waste of raw materials. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a fixed-length cutting device for processing thin-walled stainless steel water pipes. The technical problem this invention aims to solve is: how to reduce deformation at the cutting point of thin-walled stainless steel water pipes, improve processing quality, and reduce material waste.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A fixed-length cutting device for processing thin-walled stainless steel water pipes includes a frame. From left to right, a feeding assembly, a cutting mechanism, a fixed-length mechanism, and a discharge assembly are sequentially arranged on the frame. The cutting mechanism includes a mounting base fixedly connected to the frame. A rotating cylinder is rotatably connected to the inner circumference of the mounting base, forming a mounting cavity between the rotating cylinder and the mounting base. A first motor is fixed within the mounting cavity, and a first gear is fixed to the output shaft end of the first motor. An external gear ring meshing with the first gear is fixed to the outer circumference of the rotating cylinder. A cutting assembly and a grinding assembly are arranged on the rotating cylinder. The fixed-length mechanism includes an adjusting assembly with a support base. A first support column is mounted on the support base. A second support column is connected to the first support column via a telescopic assembly. A third support column is fixedly connected to the second support column via a partition block, and the partition block corresponds to the cutting assembly.

[0008] The working principle of this invention is as follows: Based on the required cutting length of the thin-walled stainless steel water pipe, the distance between the support base and the cutting component is adjusted using the adjusting component. The thin-walled stainless steel water pipe is then placed on the feeding component. The feeding component moves forward, causing the first, second, and third support columns to extend into the interior of the water pipe, with the outer diameters of the first, second, and third support columns being the same as the inner diameter of the water pipe. Then, the first motor and the cutting component are activated. The first motor drives the rotating cylinder to rotate via the first gear and the external gear ring. The rotating cylinder drives the cutting component to rotate, and the cutting component performs a circumferential cut on the water pipe. During the cutting process, the second and third support columns support the cut section of the water pipe, thereby preventing deformation at the cut section and improving the processing quality of the water pipe while reducing material waste.

[0009] The cutting assembly includes a first mounting cover, which is fixedly connected to the rotating cylinder. The first mounting cover is connected to a cutting wheel via a first driving assembly. The grinding assembly includes a second mounting cover. An opening is provided on the rotating cylinder. The second mounting cover is slidably connected to the opening. A first cylinder is fixed on the rotating cylinder. The telescopic end of the first cylinder is fixedly connected to the second mounting cover. The second mounting cover is connected to a grinding wheel via a second driving assembly.

[0010] Using the above structure, after the stainless steel water pipe is cut, the cutting wheel can be retracted through the first drive assembly, and then the second drive assembly drives the grinding wheel to extend and rotate. At the same time, the first cylinder is activated, driving the grinding wheel to move left and right to grind the cut area. This allows for the correction of any slight deformation at the cut area. After grinding, the cut water pipe on the right end is removed, and the uncut water pipe is moved forward by the feeding assembly to achieve continuous cutting of longer pipes. Grinding the pipe ends before the next cut ensures the accuracy of the pipe length cutting and prevents the pipe length from being inconsistent after subsequent grinding and correction, even if the pipe length is the same after cutting. This reduces the production of defective products and thus reduces the waste of raw materials.

[0011] The first drive assembly and the second drive assembly have the same structure. The second drive assembly includes a second cylinder, which is fixedly connected to a second mounting cover. A second motor is fixed to the telescopic end of the second cylinder, and a drive shaft is fixed to the output shaft end of the second motor. A grinding wheel is fixedly connected to the drive shaft. A first slider and a second slider are rotatably connected to the drive shaft. A support groove is provided on the inner side of the second mounting cover, and the second slider is slidably connected to the support groove. A through groove is provided on the side wall of the second mounting cover, and the first slider is slidably connected to the through groove. A sealing plate is fixed to both the upper and lower ends of the first slider. A sealing groove is provided at both the upper and lower ends of the through groove, and the sealing plate is slidably connected to the sealing groove. The open end of the second mounting cover extends into the inner circumference of the rotating cylinder and is fixed with an extension plate, which is slidably connected to the rotating cylinder.

[0012] With the above structure, the second cylinder can drive the second motor to move up and down, causing the drive shaft to extend or retract the grinding wheel and cutting wheel into the mounting cover, thus achieving cutting in the working state. The setting of the sealing plate and the sealing groove ensures that the sealing plate is always located in the sealing groove during the movement of the cutting wheel, thereby sealing the through groove and preventing the debris generated by cutting and grinding from entering the mounting cavity and affecting the internal equipment, thereby improving the service life of the equipment. Similarly, the setting of the extension plate is also to ensure the sealing of the mounting cavity while ensuring that the second mounting cover can move left and right.

[0013] The mounting base has a third cylinder fixed at both ends of the left and right sides, and a semi-circular clamping ring fixed at the telescopic end of the third cylinder. The inner wall of the mounting base has two annular dust collection grooves, which are located at both ends of the rotating cylinder. The annular dust collection grooves are connected to a collection box through a feeding pipe. The collection box is fixedly connected to the frame. Fans are fixed on both the first mounting cover and the second mounting cover.

[0014] With the above structure, when cutting and grinding pipes, the third cylinder can drive the two semi-circular clamping rings on the same side to move towards each other, clamping and fixing the pipe to ensure stability during water pipe cutting and grinding. The second and third support columns extend to the clamping points to prevent the water pipe from deforming due to the clamping force of the semi-circular clamping rings. At the same time, the semi-circular clamping rings can seal the left and right ends of the mounting base, creating a sealed environment inside the mounting base. During cutting and grinding, the fan can be turned on, allowing air to blow from the inside of the mounting cover to the inner circumference of the rotating cylinder. This not only cools the cutting and grinding wheels but also prevents cutting and grinding debris from entering the mounting cover. The debris is blown into the annular dust collection trough and then fed into the collection box through the feeding pipe for collection, preventing debris from scattering on the frame and affecting the work, and also reducing environmental pollution.

[0015] The collection box has a partition fixed inside, which divides the collection box into two collection chambers. Each collection chamber is equipped with a collection drawer. A guide seat is fixed at the upper end of the partition, and baffles are fixed at both ends of the lower side of the guide seat. An exhaust channel is opened inside the partition. An exhaust port is provided at the lower end of the exhaust channel, and an air inlet is provided at the upper end of the exhaust channel. A filter screen is fixed on the air inlet.

[0016] With the above structure, after the debris flows out of the feeding pipe, it first falls onto the guide seat and is then carried into the collection drawer by the guide seat. The air generated by the fan enters the exhaust channel through the air inlet and is then discharged through the exhaust port. Compared with the existing filter screens that are set on the collection drawer, this structure can prevent debris from clogging the filter screen and affecting the normal operation of the device. The baffle plate can further prevent debris from contacting the filter screen.

[0017] The adjustment assembly includes a third motor, a mounting slot is provided on the frame, the third motor is fixed in the mounting slot, a first threaded rod is fixed to the output shaft end of the third motor, a sliding seat is threadedly connected to the first threaded rod, and a support seat is fixedly connected to the sliding seat.

[0018] The support base has a conveying channel, and the first support column is located in the conveying channel. Several conveying rollers are rotatably connected vertically in the conveying channel. A drive motor for driving the conveying rollers is fixed on the support base. Two guide grooves are opened on the side of the support base away from the cutting mechanism. Sliding blocks are slidably connected in the guide grooves. A first semicircular sealing seat and a second semicircular sealing seat are fixed on the two sliding blocks respectively. A first limiting groove is opened on the opposite surface of the first semicircular sealing seat and the second semicircular sealing seat. A first limiting seat that cooperates with the first limiting groove is fixed on the first support column. The first semicircular sealing seat and the second semicircular sealing seat are connected by an opening and closing mechanism.

[0019] Using the above structure, after the water pipe is cut, the third cylinder releases the semi-circular clamping ring on the right end of the mounting base, while the semi-circular clamping ring on the left end remains clamped. Then, the opening and closing mechanism drives the two semi-circular closed seats to move in opposite directions, causing the first and second semi-circular closed seats to move in opposite directions, opening the conveying channel. Then, the drive motor drives the conveying roller to rotate, thus conveying the cut water pipe to the discharge assembly. After the cut water pipe leaves the conveying channel, the opening and closing assembly causes the first and second semi-circular closed seats to move towards each other. The first limiting groove clamps and fixes the first limiting seat. Then, the semi-circular clamping ring on the left end of the mounting base releases the pipe to be cut. The feeding assembly moves the water pipe to be cut to the right until one end of the water pipe contacts the first and second semi-circular closed seats. Then, the semi-circular clamping ring clamps and fixes the water pipe, repeating the previous water pipe cutting operation. This improves the convenience of material unloading and greatly increases work efficiency.

[0020] The opening and closing mechanism includes a first semicircular rotating seat and a second semicircular rotating seat, and two semicircular opening and closing seats. The first semicircular closing seat and the second semicircular closing seat are each provided with a first semi-annular sliding groove. The two first semi-annular sliding grooves form a complete first annular sliding groove. The first semicircular rotating seat and the second semicircular rotating seat are slidably connected to the first annular sliding groove. The first semicircular rotating seat and the second semicircular rotating seat are each provided with a second semi-annular sliding groove. The two second semi-annular sliding grooves form a complete second annular sliding groove. The semicircular opening and closing seats are slidably connected to the second annular sliding grooves. One of the semicircular opening and closing seats is fixed with a fixing part, and the two fixing parts are connected by an opening and closing assembly.

[0021] A bearing seat is fixed on the frame, and a drive shaft is rotatably connected to the bearing seat. A third gear is fixed on the drive shaft, and a second gear is fixed on the first threaded rod. The second gear meshes with the third gear. A fourth cylinder is fixed on the support seat, and a first ring is fixed to the output shaft end of the fourth cylinder. A fourth gear is rotatably connected to the first ring. A drive sleeve is fixed to the outer circumference of the drive shaft, and a drive protrusion is provided on the drive sleeve. The fourth gear is sleeved on the drive sleeve and slidably connected to the drive protrusion. Arc-shaped racks are fixed to the outer circumferences of the first semi-circular rotating seat and the second semi-circular rotating seat. The two arc-shaped racks form a complete toothed ring, which meshes with the fourth gear.

[0022] The telescopic assembly includes a connecting column and a telescopic column. The connecting column is fixedly connected to a first support column, and the telescopic column is fixedly connected to a second support column. A second threaded rod is rotatably connected inside the connecting column. A second limiting seat is fixed to one end of the second threaded rod. A second limiting groove that mates with the second limiting seat is opened on the first semi-circular rotating seat and the second semi-circular rotating seat. The other end of the second threaded rod is threadedly connected to the telescopic column. A limiting slide rod is fixed to the other end of the connecting column. The limiting slide rod is slidably connected to the telescopic column.

[0023] Using the above structure, when adjusting the cutting length of the water pipe, the third motor drives the first threaded rod to rotate, which in turn drives the sliding seat to move left and right. Simultaneously, the first threaded rod drives the second gear to rotate, which in turn drives the third gear to rotate, which in turn drives the transmission shaft to rotate. The transmission shaft then drives the fourth gear to rotate, which rotates through a toothed ring formed by two arc-shaped racks. This causes the semi-circular rotating seat to rotate through the second limiting groove, while the first and second semi-circular closed seats do not rotate under the action of the sliding block. Thus, the first limiting seat does not rotate under the limitation of the first limiting groove, fixing the connecting column and preventing it from rotating. The telescopic column also does not rotate under the action of the limiting slide rod. The second threaded rod rotates under the action of the second limiting seat, allowing the telescopic column to move left and right under the action of the second threaded rod. This achieves synchronous movement adjustment of the telescopic component and the support seat, ensuring that the positions of the second and third support columns do not change and guaranteeing the support effect of the second and third support columns at the cutting point.

[0024] A second ring is rotatably connected to the fourth gear, a connecting frame is fixed to the second ring, a second toothed plate is fixed to the connecting frame, a transmission gear is rotatably connected to the frame, the second toothed plate meshes with the transmission gear, the second toothed plate is slidably connected to the frame through a limiting plate, and a smooth section is provided at the end of the second toothed plate away from the fourth gear.

[0025] The opening and closing assembly includes a translation base, on which two rotating rods are rotatably connected. The other end of each rotating rod is rotatably connected to a fixed part. A first toothed plate is fixed at the lower end of the translation base. The first toothed plate meshes with a transmission gear and is slidably connected to the frame.

[0026] Using the above structure, when it is necessary to open the first and second semicircular sealing seats, the fourth cylinder is activated. The fourth cylinder drives the fourth gear to move to the right, causing the fourth gear to disengage from the arc-shaped rack. During this movement, the smooth section of the second toothed plate corresponds to the transmission gear. When the fourth gear just disengages from the arc-shaped rack, the second toothed plate meshes with the transmission gear, causing the transmission gear to rotate. The transmission gear then drives the first toothed plate to move to the left, which in turn drives the translation seat to move to the left. Under the action of the two rotating rods, the two semi-opening seats move relative to each other, thereby causing the first semicircle to rotate. The first and second semicircular rotating seats, as well as the first and second semicircular closed seats, are opened, allowing the cut water pipe to be delivered. After the water pipe is delivered, the fourth cylinder drives the fourth gear to move to the left, causing the translation seat to drive the first and second semicircular closed seats to move towards each other via the two rotating rods. When the first and second semicircular closed seats come into contact, the fourth gear comes into contact with the arc-shaped rack. At the same time, the transmission gear disengages from the tooth section of the second rack and enters the smooth section, allowing the fourth gear to continue moving to the left, thus fully meshing with the arc-shaped rack.

[0027] Compared with existing technologies, this fixed-length cutting equipment for processing thin-walled stainless steel water pipes has the following advantages:

[0028] 1. Based on the required cutting length of the thin-walled stainless steel water pipe, adjust the distance between the support base and the cutting component using the adjusting assembly. Place the thin-walled stainless steel water pipe on the feeding assembly. The feeding assembly moves forward, causing the first, second, and third support columns to extend into the water pipe, with their outer diameters matching the inner diameter of the water pipe. Then, start the first motor and the cutting assembly. The first motor drives the rotating cylinder to rotate via the first gear and external gear ring. The rotating cylinder then drives the cutting assembly to rotate, performing a circumferential cut on the water pipe. During cutting, the second and third support columns support the cut section of the water pipe, preventing deformation and improving the processing quality while reducing material waste.

[0029] 2. The grinding assembly is designed so that after the stainless steel water pipe is cut, the cutting wheel can be retracted via the first drive assembly, and then the grinding wheel can be extended and rotated by the second drive assembly. At the same time, the first cylinder is activated to move the grinding wheel left and right to grind the cut area. This allows for the correction of any slight deformation at the cut area. After grinding, the cut end of the water pipe is removed, and the uncut water pipe is moved forward by the feeding assembly to achieve continuous cutting of longer pipes. Grinding the pipe ends before the next cut ensures the accuracy of the pipe length cutting and prevents the pipe length from being inconsistent after subsequent grinding and correction, even if the pipe length is the same after cutting. This reduces the production of defective products and thus reduces the waste of raw materials.

[0030] 3. The second cylinder can be used to drive the second motor to move up and down, so that the drive shaft drives the grinding wheel and cutting wheel to extend or retract into the mounting cover, realizing cutting in the working state. The setting of the sealing plate and the sealing groove ensures that the sealing plate is always in the sealing groove during the movement of the cutting wheel, thereby sealing the through groove and preventing the debris generated by cutting and grinding from entering the mounting cavity and affecting the internal equipment, thus improving the service life of the equipment. Similarly, the setting of the extension plate is also to ensure the sealing of the mounting cavity while ensuring that the second mounting cover can move left and right.

[0031] 4. The structure of the collection box allows the second cylinder to drive the second motor to move up and down, causing the drive shaft to extend or retract the grinding wheel and cutting wheel into the mounting cover, enabling cutting during operation. The design of the sealing plate and sealing groove ensures that the sealing plate remains within the sealing groove during the movement of the cutting wheel, thus sealing the groove and preventing debris generated during cutting and grinding from entering the mounting cavity and affecting the internal equipment, thereby improving the service life of the equipment. Similarly, the extension plate is designed to ensure the sealing of the mounting cavity while allowing the second mounting cover to move left and right.

[0032] 5. After the water pipe is cut, the third cylinder releases the semi-circular clamping ring on the right end of the mounting base, while the semi-circular clamping ring on the left end remains clamped. Then, the opening and closing mechanism drives the two semi-circular closed seats to move in opposite directions, causing the first and second semi-circular closed seats to move in opposite directions, opening the conveying channel. Then, the drive motor drives the conveying roller to rotate, thus conveying the cut water pipe to the discharge assembly. After the cut water pipe leaves the conveying channel, the opening and closing assembly causes the first and second semi-circular closed seats to move towards each other. The first limiting groove clamps and fixes the first limiting seat. Then, the semi-circular clamping ring on the left end of the mounting base releases the pipe to be cut. The feeding assembly moves the water pipe to be cut to the right until one end of the water pipe contacts the first and second semi-circular closed seats. Then, the semi-circular clamping ring clamps and fixes the water pipe. The water pipe cutting operation is repeated, improving the convenience of material unloading and greatly improving work efficiency.

[0033] 6. When adjusting the cutting length of the water pipe, the third motor drives the first threaded rod to rotate. The first threaded rod drives the sliding seat to move left and right. At the same time, the first threaded rod drives the second gear to rotate, the second gear drives the third gear to rotate, the third gear drives the transmission shaft to rotate, and the transmission shaft drives the fourth gear to rotate. The fourth gear rotates through the toothed ring formed by two arc-shaped racks, so that the semi-circular rotating seat drives the second limiting seat to rotate through the second limiting groove. The first semi-circular closed seat and the second semi-circular closed seat will not rotate under the action of the sliding block. Thus, under the limitation of the first limiting groove, the first limiting seat will not rotate, so the connecting column will be fixed and will not rotate. The telescopic column will not rotate under the action of the limiting slide rod. The second threaded rod rotates under the action of the second limiting seat, so that the telescopic column can move left and right under the action of the second threaded rod. This achieves synchronous movement adjustment of the telescopic component and the support seat, so that the positions of the second support column and the third support column will not change, ensuring the support effect of the second support column and the third support column on the cutting point. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of the present invention.

[0035] Figure 2 This is a schematic diagram of the cutting mechanism in this invention.

[0036] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0037] Figure 4 This is a schematic diagram of the fixed-length mechanism in this invention.

[0038] Figure 5 This is a schematic diagram of the opening and closing mechanism in this invention.

[0039] Figure 6 This is a schematic diagram of the opening and closing mechanism from another perspective in this invention.

[0040] Figure 7 This is a schematic diagram of the structure of the fourth gear in this invention.

[0041] Figure 8 This is a structural schematic diagram of the fourth gear in this invention from another perspective.

[0042] Figure 9 This is a schematic diagram of the transmission gear in this invention.

[0043] Figure 10 This is a schematic diagram of the telescopic component in this invention.

[0044] Figure 11 This is a schematic diagram of the transmission shaft in this invention.

[0045] Figure 12 This is a schematic diagram of the collection box in this invention.

[0046] Figure 13 This is a schematic diagram of the structure of the second toothed plate in this invention.

[0047] In the diagram, 1. Feeding assembly; 2. Cutting mechanism; 3. Length-fixing mechanism; 4. Discharge assembly; 5. Mounting base; 6. Rotating cylinder; 7. Mounting cavity; 8. First motor; 9. First gear; 10. External gear ring; 11. Third cylinder; 12. Semi-circular clamping ring; 13. Annular dust collection trough; 14. Feeding pipe; 15. First mounting cover; 16. Second mounting cover; 17. Cutting wheel; 18. Grinding wheel; 19. Extension plate; 20. Support groove; 21. Second slider; 2. Drive shaft; 23. First slider; 24. Enclosed groove; 25. Enclosed plate; 26. Second cylinder; 27. Second motor; 28. First cylinder; 29. ​​Third motor; 30. First threaded rod; 31. Sliding seat; 32. Support seat; 33. Conveyor roller; 34. Third support column; 35. Separator block; 36. Second support column; 37. First support column; 38. Second gear; 39. Bearing seat; 40. Transmission shaft; 41. Third gear; 42. First half 43. Second semicircular closed seat; 44. First semicircular rotating seat; 45. Second semicircular rotating seat; 46. Arc-shaped rack; 47. Second limiting groove; 48. Semicircular opening and closing seat; 49. Fixing part; 50. Rotating rod; 51. Translation seat; 52. First gear plate; 53. Sliding block; 54. Fourth gear; 55. First ring; 56. Fourth cylinder; 57. Second ring; 58. Connecting frame; 59. Second gear plate; 60. Limiting plate; 61. Transmission gear 62. Wheel; 63. First limiting seat; 64. Connecting column; 65. Second threaded rod; 66. Second limiting seat; 67. Limiting slide rod; 68. Telescopic column; 69. Drive sleeve; 70. Drive protrusion; 71. Collection box; 72. Partition plate; 73. Filter screen; 74. Guide seat; 75. Baffle plate; 76. Collection drawer; 77. Exhaust port; 78. Fan; 79. Through hole; 80. Connecting block; 81. Trapezoidal block; 82. Slide plate; 83. Guide rod; 84. Tension spring. Detailed Implementation

[0048] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0049] like Figures 1-13As shown, this embodiment provides a fixed-length cutting device for processing thin-walled stainless steel water pipes, including a frame. From left to right, the frame is provided with a feeding assembly 1, a cutting mechanism 2, a fixed-length mechanism 3, and a discharge assembly 4. The cutting mechanism 2 includes a mounting base 5, which is fixedly connected to the frame. A rotating cylinder 6 is rotatably connected to the inner circumference of the mounting base 5. A mounting cavity 7 is formed between the rotating cylinder 6 and the mounting base 5. A first motor 8 is fixed in the mounting cavity 7. A first gear 9 is fixed to the output shaft end of the first motor 8. An external gear ring 10 that meshes with the first gear 9 is fixed to the outer circumference of the rotating cylinder 6. A cutting assembly and a grinding assembly are provided on the rotating cylinder 6. The fixed-length mechanism 3 includes an adjustment assembly. A support base 32 is provided on the adjustment assembly. A first support column 37 is provided on the support base 32. A second support column 36 is connected to the first support column 37 through a telescopic assembly. A third support column 34 is fixedly connected to the second support column 36 through a partition block 35. The partition block 35 corresponds to the cutting assembly.

[0050] Based on the required cutting length of the thin-walled stainless steel water pipe, the distance between the support base 32 and the cutting component is adjusted using the adjusting component. The thin-walled stainless steel water pipe is then placed on the feeding component 1. The feeding component 1 moves forward, causing the first support column 37, the second support column 36, and the third support column 34 to extend into the interior of the water pipe, with the outer diameter of the first support column 37, the second support column 36, and the third support column 34 being the same as the inner diameter of the water pipe. Then, the first motor 8 and the cutting component are turned on. The first motor 8 drives the rotating cylinder 6 to rotate through the first gear 9 and the external gear ring 10. The rotating cylinder 6 drives the cutting component to rotate, and the cutting component performs a circumferential cut on the water pipe. During the cutting process, the second support column 36 and the third support column 34 support the cut end of the water pipe, thereby preventing deformation at the cut end and improving the processing quality of the water pipe while reducing material waste.

[0051] The cutting assembly includes a first mounting cover 15, which is fixedly connected to the rotating cylinder 6. The first mounting cover 15 is connected to a cutting wheel 17 via a first drive assembly. The grinding assembly includes a second mounting cover 16. An opening is provided on the rotating cylinder 6. The second mounting cover 16 is slidably connected to the opening. A first cylinder 28 is fixed on the rotating cylinder 6. The telescopic end of the first cylinder 28 is fixedly connected to the second mounting cover 16. The second mounting cover 16 is connected to a grinding wheel 18 via a second drive assembly.

[0052] Using the above structure, after the stainless steel water pipe is cut, the cutting wheel 17 can be retracted through the first drive assembly, and then the grinding wheel 18 can be extended and rotated by the second drive assembly. At the same time, the first cylinder 28 is activated, which drives the grinding wheel 18 to move left and right to grind the cut area. This allows for the correction of any slight deformation at the cut area using the grinding wheel 18. After grinding, the cut water pipe at the right end is removed, and the uncut water pipe is moved forward by the feeding assembly 1 to achieve continuous cutting of longer pipes. Grinding the pipe opening before the next cut ensures the accuracy of the pipe length cutting and prevents the pipe length from being inconsistent after subsequent grinding and correction of both ends, even if the pipe length is the same after cutting. This reduces the production of defective products and thus reduces the waste of raw materials.

[0053] The first drive assembly and the second drive assembly have the same structure. The second drive assembly includes a second cylinder 26, which is fixedly connected to the second mounting cover 16. A second motor 27 is fixed to the telescopic end of the second cylinder 26. A drive shaft 22 is fixed to the output shaft end of the second motor 27. A grinding wheel 18 is fixedly connected to the drive shaft 22. A first slider 23 and a second slider 21 are rotatably connected to the drive shaft 22. A support groove 20 is provided on the inner side of the second mounting cover 16. The second slider 21 is slidably connected to the support groove 20. A through groove is provided on the side wall of the second mounting cover 16. The first slider 23 is slidably connected to the through groove. A closing plate 25 is fixed to both the upper and lower ends of the first slider 23. A closing groove 24 is provided at both the upper and lower ends of the through groove. The closing plate 25 is slidably connected to the closing groove 24. The open end of the second mounting cover 16 extends into the inner circumference of the rotating cylinder 6 and is fixed with an extension plate 19. The extension plate 19 is slidably connected to the rotating cylinder 6.

[0054] With the above structure, the second cylinder 26 can drive the second motor 27 to move up and down, so that the drive shaft 22 drives the grinding wheel 18 and the cutting wheel 17 to extend or retract into the mounting cover, realizing cutting in the working state. The setting of the sealing plate 25 and the sealing groove 24 ensures that the sealing plate 25 is always located in the sealing groove 24 during the movement of the cutting wheel 17, thereby sealing the through groove and preventing the debris generated by cutting and grinding from entering the mounting cavity 7 and affecting the internal equipment, thus improving the service life of the equipment. Similarly, the setting of the extension plate 19 is also to ensure the sealing of the mounting cavity 7 while ensuring that the second mounting cover 16 can move left and right.

[0055] The mounting base 5 has a third cylinder 11 fixed at both ends, one above the other. The telescopic end of the third cylinder 11 is fixed with a semi-circular clamping ring 12. The inner wall of the mounting base 5 has two annular dust collection grooves 13, which are located at both ends of the rotating cylinder 6. The annular dust collection grooves 13 are connected to a collection box 70 through a feeding pipe 14. The collection box 70 is fixedly connected to the frame. Fans 77 are fixed on both the first mounting cover 15 and the second mounting cover 16.

[0056] With the above structure, when cutting and grinding the pipe, the third cylinder 11 can drive the two semi-circular clamping rings 12 on the same side to move towards each other, clamping and fixing the pipe to ensure stability during water pipe cutting and grinding. The second support column 36 and the third support column 34 extend to the clamping point to prevent the water pipe from deforming due to the clamping force of the semi-circular clamping rings 12. At the same time, the semi-circular clamping rings can be used to seal the left and right ends of the mounting base 5, creating a sealed environment inside the mounting base 5. During cutting and grinding, the fan 77 can be turned on to blow air from the inside of the mounting cover to the inner circumference of the rotating cylinder 6. This not only cools the cutting wheel 17 and the grinding wheel 18, but also prevents cutting and grinding debris from entering the mounting cover. The debris can be blown into the annular dust collection trough 13 and then fed into the collection box 70 through the feeding pipe 14 for collection, preventing debris from scattering on the frame and affecting the work, and also reducing environmental pollution.

[0057] The collection box 70 has a partition 71 fixed inside, which divides the collection box 70 into two collection chambers. Each collection chamber is equipped with a collection drawer 75. A guide seat 73 is fixed at the upper end of the partition 71. Baffles 74 are fixed at both the left and right ends of the lower side of the guide seat 73. An exhaust channel is opened inside the partition 71. An exhaust port 76 is provided at the lower end of the exhaust channel. An air inlet is opened at the upper end of the exhaust channel. A filter screen 72 is fixed on the air inlet.

[0058] With the above structure, after the debris flows out of the feeding pipe 14, it first falls onto the guide seat 73. Under the action of the guide seat 73, it enters the collection drawer 75. The air generated by the fan 77 enters the exhaust channel through the air inlet and is then discharged through the exhaust port. Compared with the existing filter screen 72 being placed on the collection drawer 75, this structure can prevent debris from clogging the filter screen 72 and affecting the normal operation of the device. The baffle plate 74 can further prevent debris from contacting the filter screen 72.

[0059] The adjustment assembly includes a third motor 29. A mounting slot is provided on the frame, and the third motor 29 is fixed in the mounting slot. A first threaded rod 30 is fixed to the output shaft end of the third motor 29. A sliding seat 31 is threadedly connected to the first threaded rod 30, and a support seat 32 is fixedly connected to the sliding seat 31.

[0060] The support base 32 has a conveying channel, and the first support column 37 is located in the conveying channel. Several conveying rollers 33 are rotatably connected in the upper and lower parts of the conveying channel. A drive motor for driving the conveying rollers 33 is fixed on the support base 32. Two guide grooves are opened on the side of the support base 32 away from the cutting mechanism 2. Sliding blocks 53 are slidably connected in the guide grooves. A first semi-circular sealing seat 42 and a second semi-circular sealing seat 43 are fixed on the two sliding blocks 53 respectively. A first limiting groove is opened on the opposite surface of the first semi-circular sealing seat 42 and the second semi-circular sealing seat 43. A first limiting seat 62 that cooperates with the first limiting groove is fixed on the first support column 37. The first semi-circular sealing seat 42 and the second semi-circular sealing seat 43 are connected by an opening and closing mechanism.

[0061] Using the above structure, after the water pipe is cut, the third cylinder 11 releases the semi-circular clamping ring 12 at the right end of the mounting base 5, while the semi-circular clamping ring 12 at the left end remains clamped. Then, the opening and closing mechanism drives the two semi-circular sealing seats to move in opposite directions, thereby causing the first semi-circular sealing seat 42 and the second semi-circular sealing seat 43 to move in opposite directions, opening the conveying channel. Then, the drive motor drives the conveying roller 33 to rotate, thereby conveying the cut water pipe to the discharge assembly 4. When the cut water pipe leaves the conveying channel, the opening and closing mechanism... The assembly causes the first semicircular sealing seat 42 and the second semicircular sealing seat 43 to move towards each other. The first limiting seat 62 is clamped and fixed by the first limiting groove. Then, the semicircular clamping ring 12 at the left end of the mounting seat 5 is released from the pipe to be cut. The feeding assembly 1 is used to move the water pipe to be cut to the right until one end of the water pipe abuts against the first semicircular sealing seat 42 and the second semicircular sealing seat 43. Then, the semicircular clamping ring 12 is used to clamp and fix the water pipe. The water pipe cutting work is repeated, which improves the convenience of material feeding and greatly improves the efficiency of work.

[0062] The opening and closing mechanism includes a first semicircular rotating seat 44 and a second semicircular rotating seat 45, and two semicircular opening and closing seats 48. The first semicircular closing seat 42 and the second semicircular closing seat 43 are each provided with a first semi-annular groove. The two first semi-annular grooves form a complete first annular groove. The first semicircular rotating seat 44 and the second semicircular rotating seat 45 are slidably connected to the first annular groove. The first semicircular rotating seat 44 and the second semicircular rotating seat 45 are each provided with a second semi-annular groove. The two second semi-annular grooves form a complete second annular groove. The semicircular opening and closing seats 48 are slidably connected to the second annular groove. One of the semicircular opening and closing seats 48 is fixed with a fixing part 49. The two fixing parts 49 are connected by an opening and closing assembly.

[0063] A bearing seat 39 is fixed on the frame, and a drive shaft 40 is rotatably connected to the bearing seat 39. A third gear 41 is fixed on the drive shaft 40. A second gear 38 is fixed on the first threaded rod 30. The second gear 38 meshes with the third gear 41. A fourth cylinder 56 is fixed on the support seat 32. A first ring 55 is fixed to the output shaft end of the fourth cylinder 56. A fourth gear 54 is rotatably connected to the first ring 55. A drive sleeve 68 is fixed to the outer periphery of the drive shaft 40. A drive protrusion 69 is provided on the drive sleeve 68. The fourth gear 54 is sleeved on the drive sleeve 68 and slidably connected to the drive protrusion 69. Arc-shaped racks 46 are fixed to the outer periphery of the first semi-circular rotating seat 44 and the second semi-circular rotating seat 45. The two arc-shaped racks 46 form a complete gear ring, which meshes with the fourth gear 54.

[0064] The telescopic assembly includes a connecting column 63 and a telescopic column 67. The connecting column 63 is fixedly connected to the first support column 37, and the telescopic column 67 is fixedly connected to the second support column 36. A second threaded rod 64 is rotatably connected inside the connecting column 63. A second limiting seat 65 is fixed to one end of the second threaded rod 64. A second limiting groove 47 that mates with the second limiting seat 65 is opened on the first semi-circular rotating seat 44 and the second semi-circular rotating seat 45. The other end of the second threaded rod 64 is threadedly connected to the telescopic column 67. A limiting slide rod 66 is fixed to the other end of the connecting column 63. The limiting slide rod 66 is slidably connected to the telescopic column 67.

[0065] Using the above structure, when adjusting the cutting length of the water pipe, the third motor 29 drives the first threaded rod 30 to rotate, which in turn drives the sliding seat 31 to move left and right. Simultaneously, the first threaded rod 30 drives the second gear 38 to rotate, which in turn drives the third gear 41 to rotate. The third gear 41 then drives the transmission shaft 40 to rotate, which in turn drives the fourth gear 54 to rotate. The fourth gear 54 rotates via a toothed ring formed by two arc-shaped racks 46, causing the semi-circular rotating seat to drive the second limiting seat 65 to rotate via the second limiting groove 47. Meanwhile, the first semi-circular closed seat 42 and the second semi-circular closed seat 43... The sliding block 53 will not rotate, thus limiting the first limiting seat 62 to remain stationary under the first limiting groove. This keeps the connecting column 63 fixed and prevents it from rotating. The telescopic column 67 will also not rotate under the action of the limiting slide rod 66. The second threaded rod 64 will rotate under the action of the second limiting seat 65, allowing the telescopic column 67 to move left and right under the action of the second threaded rod 64. This enables the telescopic component and the support seat 32 to move synchronously and adjust, ensuring that the positions of the second support column 36 and the third support column 34 do not change and guaranteeing the support effect of the second support column 36 and the third support column 34 on the cutting point.

[0066] A second ring 57 is rotatably connected to the fourth gear 54. A connecting frame 58 is fixed to the second ring 57. A second toothed plate 59 is fixed to the connecting frame 58. A transmission gear 61 is rotatably connected to the frame. The second toothed plate 59 meshes with the transmission gear 61. The second toothed plate 59 is slidably connected to the frame through a limiting plate 60. A smooth section is provided at the end of the second toothed plate 59 away from the fourth gear 54.

[0067] The opening and closing assembly includes a translation seat 51, on which two rotating rods 50 are rotatably connected. The other end of the rotating rods 50 is rotatably connected to the fixed part 49. A first toothed plate 52 is fixed at the lower end of the translation seat 51. The first toothed plate 52 meshes with the transmission gear 61 and is slidably connected to the frame.

[0068] Using the above structure, when it is necessary to open the first semicircular sealing seat 42 and the second semicircular sealing seat 43, the fourth cylinder 56 is activated. The fourth cylinder 56 drives the fourth gear 54 to move to the right, causing the fourth gear 54 to disengage from the arc-shaped rack 46. During this movement, the smooth section of the second toothed plate 59 corresponds to the transmission gear 61. When the fourth gear 54 just disengages from the arc-shaped rack 46, the second toothed plate 59 meshes with the transmission gear 61, causing the transmission gear 61 to rotate. The transmission gear 61 drives the first toothed plate 52 to move to the left, and the first toothed plate 52 drives the translation seat 51 to move to the left. Under the action of the two rotating rods 50, the two semi-opening seats move relative to each other, thereby driving the first semicircular sealing seat 42 to move to the right. The rotating seat 44 and the second semicircular rotating seat 45, as well as the first semicircular closed seat 42 and the second semicircular closed seat 43, are opened, allowing the cut water pipe to be delivered. After the water pipe is delivered, the fourth cylinder 56 drives the fourth gear 54 to move to the left, so that the translation seat 51 drives the first semicircular closed seat 42 and the second semicircular closed seat 43 to move towards each other through the two rotating rods 50. When the first semicircular closed seat 42 and the second semicircular closed seat 43 come into contact, the fourth gear 54 comes into contact with the arc-shaped rack 46. At the same time, the transmission gear 61 disengages from the tooth section of the second rack and enters the smooth section, allowing the fourth gear 54 to continue to move to the left, thus fully meshing with the arc-shaped rack 46.

[0069] A through hole 78 is provided on the smooth end of the second toothed plate 59. A connecting block 79 is provided in the through hole 78. A trapezoidal block 80 is fixed to one end of the connecting block 79, and a sliding plate 81 is fixed to the other end of the connecting block 79. A guide rod 82 is fixed on the second toothed plate 59. The sliding plate 81 is slidably connected to the guide rod 82. A tension spring 83 is fixed between the sliding plate 81 and the second toothed plate 59.

[0070] With the above structure, when the fourth gear 54 is in contact with the arc-shaped rack 46, the transmission gear 61 and the trapezoidal block 80 structure, when the fourth gear 54 continues to move to the left, the fourth gear 54 will squeeze the trapezoidal block 80, causing the trapezoidal block 80 to enter the through hole 78, thereby causing the second tooth plate 59 of the transmission gear 61 to continue to move to the left. This structure allows the trapezoidal block 80 to limit the transmission gear 61 when the fourth gear 54 is at the critical point of contact with the arc-shaped rack 46, preventing the transmission gear 61 from flipping after disengaging from the teeth of the second tooth plate 59, ensuring that the fourth gear 54 can smoothly mesh with the arc-shaped rack 46.

[0071] The working principle of this invention is as follows: Based on the required cutting length of the thin-walled stainless steel water pipe, the third motor 29 is activated to drive the first threaded rod 30 to rotate. The first threaded rod 30 drives the sliding seat 31 to move left and right. Simultaneously, the first threaded rod 30 drives the second gear 38 to rotate, the second gear 38 drives the third gear 41 to rotate, the third gear 41 drives the transmission shaft 40 to rotate, and the transmission shaft 40 drives the fourth gear 54 to rotate. The fourth gear 54 rotates through the toothed ring formed by two arc-shaped racks 46, thereby causing the semi-circular rotating seat to drive the second limiting seat 65 to rotate through the second limiting groove 47. Meanwhile, the first semi-circular closed seat 42 and the second semi-circular closed seat 43 will not rotate under the action of the sliding block 53. Thus, under the limitation of the first limiting groove, the first limiting seat 62 will not rotate. This ensures that the connecting column 63 remains fixed and does not rotate, and the telescopic column 67 does not rotate under the action of the limiting slide rod 66. Meanwhile, the second threaded rod 64 rotates under the action of the second limiting seat 65, allowing the telescopic column 67 to move left and right under the action of the second threaded rod 64. This achieves synchronous movement adjustment between the telescopic component and the support seat 32, ensuring that the positions of the second support column 36 and the third support column 34 do not change, thus guaranteeing the support effect of the second support column 36 and the third support column 34 on the cutting area. After adjusting the distance between the support seat 32 and the cutting component, the thin-walled stainless steel water pipe is placed on the feeding component 1. The feeding component 1 moves forward, causing the first support column 37, the second support column 36, and the third support column 34 to extend into the water pipe. When the water pipe... After the right end contacts the opening and closing mechanism, the third cylinder 11 is activated, driving the two semi-circular clamping rings 12 on the same side to move towards each other, clamping and fixing the pipe to ensure stability during water pipe cutting and grinding. The second support column 36 and the third support column 34 extend to the clamping point to prevent deformation of the water pipe due to the clamping force of the semi-circular clamping rings 12. Simultaneously, the semi-circular clamping rings can seal the left and right ends of the mounting base 5, creating a sealed environment inside the mounting base 5. Then, the first motor 8 and the second motor 27 are activated. The first motor 8 drives the rotating cylinder 6 to rotate via the first gear 9 and the external gear ring 10. The rotating cylinder 6 drives the cutting assembly to rotate. The second motor 27 drives the cutting blade to rotate. Then, the second cylinder 26 drives the second motor 27 to move. 7. The cutting blade extends out of the first mounting cover 15 via the drive shaft 22, and performs a circumferential cut on the water pipe. During cutting, the second support column 36 and the third support column 34 support the cut end of the water pipe, thereby preventing deformation and improving the processing quality of the water pipe, reducing material waste. At the same time, the fan 77 is turned on, blowing air from inside the mounting cover to the inner circumference of the rotating cylinder 6. This not only cools the cutting wheel 17 and the grinding wheel 18, but also prevents cutting and grinding debris from entering the mounting cover. The debris is blown into the annular dust collection groove 13 and then fed into the collection box 70 through the feeding pipe 14 for collection. After cutting, the semi-circular clamping ring 12 on the right end of the mounting seat 5 is released by the third cylinder 11.Meanwhile, the semi-circular clamping ring 12 on the left end remains in a clamping state. Then, the fourth cylinder 56 is activated, driving the fourth gear 54 to move to the right, causing the fourth gear 54 to disengage from the arc-shaped rack 46. During this movement, the smooth section of the second toothed plate 59 corresponds to the transmission gear 61. When the fourth gear 54 just disengages from the arc-shaped rack 46, the second toothed plate 59 meshes with the transmission gear 61, causing the transmission gear 61 to rotate. The transmission gear 61 drives the first toothed plate 52 to move to the left, and the first toothed plate 52 drives the translation seat 51 to move to the left. Under the action of the two rotating rods 50, the two semi-open seats move relative to each other, thereby causing the first semi-circular rotating seat 44 and the second semi-circular rotating seat 45, as well as the first semi-circular closed seat 42 and the second semi-circular closed seat 43 to open, thus opening the conveying channel. Then, the drive motor drives the conveying roller 33 to rotate, thereby conveying the cut water pipe to the discharge assembly 4. After the cut water pipe leaves the conveying channel... The fourth cylinder 56 drives the fourth gear 54 to move to the left, causing the translation seat 51 to drive the first semi-circular closed seat 42 and the second semi-circular closed seat 43 to move towards each other via the two rotating rods 50. When the first semi-circular closed seat 42 and the second semi-circular closed seat 43 contact each other, the fourth gear 54 contacts the arc-shaped rack 46. At the same time, the transmission gear 61 disengages from the tooth section of the second rack and enters the smooth section, allowing the fourth gear 54 to continue moving to the left, thus fully meshing with the arc-shaped rack 46. The first limiting groove clamps and fixes the first limiting seat 62. Then, the semi-circular clamping ring 12 at the left end of the mounting seat 5 releases the pipe to be cut. The feeding assembly 1 moves the water pipe to be cut to the right until one end of the water pipe abuts against the first semi-circular closed seat 42 and the second semi-circular closed seat 43. Then, the semi-circular clamping ring 12 clamps and fixes the water pipe. The water pipe cutting operation is repeated, improving the convenience of material unloading and greatly improving work efficiency.

[0072] In summary, by setting up structures such as the second support column 36, the third support column 34, and the grinding assembly, the deformation at the cutting point of the thin-walled stainless steel water pipe is reduced, the processing quality is improved, and the waste of raw materials is reduced.

[0073] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A fixed-length cutting device for processing thin-walled stainless steel water pipes, comprising a frame, wherein a feeding assembly (1), a cutting mechanism (2), a fixed-length mechanism (3), and a discharge assembly (4) are arranged sequentially from left to right on the frame, characterized in that, The cutting mechanism (2) includes a mounting base (5), which is fixedly connected to the frame. A rotating cylinder (6) is rotatably connected to the inner circumference of the mounting base (5). A mounting cavity (7) is formed between the rotating cylinder (6) and the mounting base (5). A first motor (8) is fixed inside the mounting cavity (7). A first gear (9) is fixed at the output shaft end of the first motor (8). An external gear ring (10) that meshes with the first gear (9) is fixed on the outer circumference of the rotating cylinder (6). A cutting component and a grinding component are provided on the rotating cylinder (6). The fixed length mechanism (3) includes an adjustment component. A support base (32) is provided on the adjustment component. A first support column (37) is provided on the support base (32). A second support column (36) is connected to the first support column (37) through a telescopic component. A third support column (34) is fixedly connected to the second support column (36) through a partition block (35). The partition block (35) corresponds to the cutting component. The cutting assembly includes a first mounting cover (15), which is fixedly connected to the rotating cylinder (6). The first mounting cover (15) is connected to a cutting wheel (17) via a first drive assembly. The grinding assembly includes a second mounting cover (16), which has an opening on the rotating cylinder (6). The second mounting cover (16) is slidably connected to the opening. A first cylinder (28) is fixedly mounted on the rotating cylinder (6). The telescopic end of the first cylinder (28) is fixedly connected to the second mounting cover (16). The second mounting cover (16) is connected to a grinding wheel (18) via a second drive assembly. The first drive assembly and the second drive assembly have the same structure. The second drive assembly includes a second cylinder (26), which is fixedly connected to the second mounting cover (16). A second motor (27) is fixed to the telescopic end of the second cylinder (26), and a drive shaft (22) is fixed to the output shaft end of the second motor (27). A grinding wheel (18) is fixedly connected to the drive shaft (22). A first slider (23) and a second slider (21) are rotatably connected to the drive shaft (22). A support groove is provided on the inner side of the second mounting cover (16). (20), the second slider (21) is slidably connected to the support groove (20), a through groove is provided on the side wall of the second mounting cover (16), the first slider (23) is slidably connected to the through groove, the upper and lower ends of the first slider (23) are fixed with a sealing plate (25), the upper and lower ends of the through groove are provided with a sealing groove (24), the sealing plate (25) is slidably connected to the sealing groove (24), the open end of the second mounting cover (16) extends into the inner circumference of the rotating cylinder (6) and is fixed with an extension plate (19), the extension plate (19) is slidably connected to the rotating cylinder (6); The mounting base (5) has a third cylinder (11) fixed at both the left and right ends, and a semi-circular clamping ring (12) fixed at the telescopic end of the third cylinder (11). The inner wall of the mounting base (5) has two annular dust collection grooves (13), which are located at the two ends of the rotating cylinder (6). The annular dust collection grooves (13) are connected to a collection box (70) through a feeding pipe (14). The collection box (70) is fixedly connected to the frame. Fans (77) are fixed on the first mounting cover (15) and the second mounting cover (16). The collection box (70) is fixed with a partition (71) inside. The partition (71) divides the collection box (70) into two collection chambers. Each collection chamber is equipped with a collection drawer (75). A guide seat (73) is fixed at the upper end of the partition (71). Baffles (74) are fixed at the lower left and right ends of the guide seat (73). An exhaust channel is opened inside the partition (71). An exhaust port (76) is provided at the lower end of the exhaust channel. An air inlet is opened at the upper end of the exhaust channel. A filter screen (72) is fixed on the air inlet. The adjustment assembly includes a third motor (29), and a mounting slot is provided on the frame. The third motor (29) is fixed in the mounting slot. A first threaded rod (30) is fixed to the output shaft end of the third motor (29). A sliding seat (31) is threadedly connected to the first threaded rod (30). The support seat (32) is fixedly connected to the sliding seat (31). The support base (32) has a conveying channel. The first support column (37) is located in the conveying channel. Several conveying rollers (33) are rotatably connected in the upper and lower parts of the conveying channel. A drive motor for driving the conveying rollers (33) is fixed on the support base (32). Two guide grooves are opened on the side of the support base (32) away from the cutting mechanism (2). Sliding blocks (53) are slidably connected in the guide grooves. A first semi-circular closed seat (42) and a second semi-circular closed seat (43) are fixed on the two sliding blocks (53). A first limiting groove is opened on the opposite side of the first semi-circular closed seat (42) and the second semi-circular closed seat (43). A first limiting seat (62) that cooperates with the first limiting groove is fixed on the first support column (37). The first semi-circular closed seat (42) and the second semi-circular closed seat (43) are connected by an opening and closing mechanism. The opening and closing mechanism includes a first semi-circular rotating seat (44) and a second semi-circular rotating seat (45), and two semi-circular opening and closing seats (48). The first semi-circular closing seat (42) and the second semi-circular closing seat (43) are each provided with a first semi-annular groove. The two first semi-annular grooves form a complete first annular groove. The first semi-circular rotating seat (44) and the second semi-circular rotating seat (45) are slidably connected to the first annular groove. The first semi-circular rotating seat (44) and the second semi-circular rotating seat (45) are each provided with a second semi-annular groove. The two second semi-annular grooves form a complete second annular groove. The semi-circular opening and closing seat (48) is slidably connected to the second annular groove. One of the semi-circular opening and closing seats (48) is fixed with a fixing part (49). The two fixing parts (49) are connected by an opening and closing assembly.

2. The fixed-length cutting equipment for processing thin-walled stainless steel water pipes according to claim 1, characterized in that, The frame is fixed with a bearing seat (39), and a transmission shaft (40) is rotatably connected to the bearing seat (39). A third gear (41) is fixed to the transmission shaft (40). A second gear (38) is fixed to the first threaded rod (30). The second gear (38) meshes with the third gear (41). A fourth cylinder (56) is fixed to the support seat (32). A first ring (55) is fixed to the output shaft end of the fourth cylinder (56). A fourth gear (54) is rotatably connected to the first ring (55). A drive sleeve (68) is fixed to the outer periphery of the transmission shaft (40). A drive protrusion (69) is provided on the drive sleeve (68). The fourth gear (54) is sleeved on the drive sleeve (68) and slidably connected to the drive protrusion (69). Arc-shaped racks (46) are fixed to the outer periphery of the first semi-circular rotating seat (44) and the second semi-circular rotating seat (45). The two arc-shaped racks (46) form a complete toothed ring. The toothed ring meshes with the fourth gear (54). The telescopic assembly includes a connecting column (63) and a telescopic column (67). The connecting column (63) is fixedly connected to the first support column (37), and the telescopic column (67) is fixedly connected to the second support column (36). The connecting column (63) is internally rotatably connected to a second threaded rod (64). One end of the second threaded rod (64) is fixed to a second limiting seat (65). The first semi-circular rotating seat (44) and the second semi-circular rotating seat (45) are provided with a second limiting groove (47) that cooperates with the second limiting seat (65). The other end of the second threaded rod (64) is threadedly connected to the telescopic column (67). The other end of the connecting column (63) is fixed to a limiting slide rod (66), and the limiting slide rod (66) is slidably connected to the telescopic column (67).

3. The fixed-length cutting equipment for processing thin-walled stainless steel water pipes according to claim 2, characterized in that, A second ring (57) is rotatably connected to the fourth gear (54), a connecting frame (58) is fixed on the second ring (57), a second toothed plate (59) is fixed on the connecting frame (58), a transmission gear (61) is rotatably connected to the frame, the second toothed plate (59) meshes with the transmission gear (61), the second toothed plate (59) is slidably connected to the frame through a limiting plate (60), and a smooth section is provided at the end of the second toothed plate (59) away from the fourth gear (54); The opening and closing assembly includes a translation seat (51), on which two rotating rods (50) are rotatably connected. The other end of the rotating rods (50) is rotatably connected to the fixing part (49). A first toothed plate (52) is fixed at the lower end of the translation seat (51). The first toothed plate (52) meshes with the transmission gear (61) and is slidably connected to the frame.

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