Thin-wall large-aperture high-elastic rubber-plastic pipe fixed-length follow-up cutting device

Abstract

The application discloses a kind of thin-wall large aperture high elastic rubber plastic pipe fixed-length follow-up cutting equipment, belong to thin-wall plastic pipe cutting technical field, it includes ring cutting mechanism and support and cooling mechanism, the ring cutting mechanism and support and cooling mechanism are respectively arranged in the inner and outer rings of rubber plastic pipe, and support and cooling mechanism follow ring cutting mechanism movement by magnetic traction;The application moves by ring cutting mechanism following trolley, and moves by magnetic traction support and cooling mechanism, when position approaches detection component and lower magnetic base keep corresponding, it can ensure that cutting area is accurately limited between two air bags, while hydraulic expansion assembly pushes cooling liquid into air bag, air bag expands and tightly adheres to pipe wall, realizes flexible centering support of pipe wall on both sides of cutting area, avoid rigid support to cause pipe wall extrusion damage, while the air bag after expansion can form physical isolation boundary, effectively block rubber plastic pipe internal passage, block cutting debris to deep movement, for fixed-point cutting, isolation protection provides stable structural foundation.

Description

Technical Field

[0001] This invention relates to the field of thin-walled plastic pipe cutting technology, and in particular to a fixed-length follow-up cutting device for thin-walled, large-diameter, high-elasticity rubber and plastic pipes. Background Technology

[0002] Thin-walled, large-diameter, high-elasticity rubber and plastic pipes have structural characteristics such as thin walls, high material elasticity, low rigidity, and easy deformation. During the fixed-length follow-up cutting process, defects such as pipe wall collapse, cut deformation, softening and melting of edges due to heat, and internal debris leakage are very likely to occur. The requirements for internal support, cooling and heat dissipation, and debris collection capabilities during the cutting process are extremely high. However, most existing cutting equipment uses fixed rigid internal support or unsupported open cutting structures. Rigid support is prone to squeezing and damaging the inner wall of thin-walled rubber and plastic pipes and cannot adapt to dynamic cutting conditions. Unsupported cutting can easily cause the pipe wall in the cutting area to collapse under pressure and the cut to become out of round. At the same time, traditional equipment lacks a dedicated isolation structure for the cutting area, and the debris generated by cutting can easily penetrate deep into the pipe, making it difficult to clean. Moreover, it generally uses external single-point heat dissipation, which has limited heat dissipation efficiency and cannot remove the high temperature of cutting friction in time, which can easily cause problems such as pipe end heat melting, burrs, and cracking. In addition, traditional chip suction structures are mostly open negative pressure adsorption, which has poor negative pressure dispersion and adsorption effect. Furthermore, open negative pressure can easily suck up and collapse thin-walled hoses, making it impossible to simultaneously achieve the multiple process requirements of flexible support, fixed-point cooling, precise chip collection, and prevention of pipe collapse. This seriously affects the cutting accuracy and finished product quality of thin-walled large-diameter high-elasticity rubber and plastic pipes.

[0003] To address the above problems, this invention proposes a fixed-length follow-up cutting device for thin-walled, large-diameter, high-elasticity rubber and plastic pipes. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing cutting equipment, which often employs fixed rigid internal supports or unsupported open cutting structures. Rigid supports are prone to compressing and damaging the inner wall of thin-walled rubber and plastic pipes, while unsupported cutting can easily lead to pipe wall collapse under pressure and out-of-roundness deformation in the cutting area. Furthermore, traditional equipment lacks a dedicated isolation structure for the cutting area, allowing cutting debris to easily penetrate deep into the pipe. It also generally uses external single-point heat dissipation, which has limited heat dissipation efficiency. In addition, traditional chip suction structures are mostly open-area negative pressure adsorption, which cannot simultaneously achieve the multiple process requirements of flexible support, targeted cooling, precise chip collection, and prevention of pipe collapse, severely affecting the cutting accuracy and finished product quality of thin-walled, large-diameter, high-elasticity rubber and plastic pipes. Therefore, this invention proposes a fixed-length follow-up cutting device for thin-walled, large-diameter, high-elasticity rubber and plastic pipes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A fixed-length follow-up cutting device for thin-walled, large-diameter, high-elasticity rubber and plastic tubes includes a ring cutting mechanism and a support and cooling mechanism. The ring cutting mechanism and the support and cooling mechanism are respectively arranged on the inner and outer rings of the rubber and plastic tube, and the support and cooling mechanism follows the ring cutting mechanism through magnetic traction. The circumferential cutting mechanism includes a driving component, a cutting component disposed above the driving component, and a position proximity detection component; The support and cooling mechanism includes a middle ring, inside which a circulation component and a dust removal component are arranged. The dust removal component is equipped with multiple dust suction control components. Both ends of the middle ring are equipped with hydraulic expansion components. The two hydraulic expansion components are respectively connected to two airbags. The two airbags are fixedly connected to the outer surface of the middle ring and connected to the circulation component. When the hydraulic expansion components are aligned with the position proximity detection component, the two hydraulic expansion components can expand the two airbags respectively, and make the two airbags tightly adhere to both sides of the cut part of the inner wall of the rubber and plastic tube.

[0006] Preferably, the drive assembly includes a mounting frame and an outer rotating ring. Two inner rings are fixedly connected to the top of the mounting frame. The outer rotating ring is rotatably mounted on the two inner rings via two bearings. Each of the two inner rings is provided with multiple outer guide wheels and multiple outer magnets.

[0007] Preferably, a bracket is fixedly connected to the upper wall of the inner cavity of the outer rotating ring, and a magnetic plate is fixedly connected to one end of the bracket.

[0008] Preferably, a gear ring is fixedly connected to the outer rotating ring, the gear ring meshes with the first gear, and the first gear is fixedly connected to the output shaft of the motor.

[0009] Preferably, the cutting assembly includes an electric push rod, which is fixedly mounted on the outer rotating ring, and one end of the electric push rod is fixedly connected to a cutting machine.

[0010] Preferably, the proximity detection component includes a mounting plate, which is fixedly connected to the inner ring, and the motor is fixedly connected to the mounting plate. A side plate is fixedly connected to one side of the mounting plate, and an alarm and a switch are respectively provided above and below the side plate. A sliding sleeve is fixedly connected to the mounting plate, and a sliding rod is slidably connected in the sliding sleeve. A top head and an upper magnetic base are fixedly connected to both ends of the sliding rod, respectively. The top head overlaps with the switch, and a first spring is fixedly connected between the top head and the sliding sleeve. The first spring is sleeved on the outside of the sliding rod.

[0011] Preferably, the hydraulic expansion assembly includes a fixed frame and an inner shell. A filter ring is fixedly connected to one side of the inner shell. The filter ring is fixed to the middle ring by a clamp. The outer surface of the inner shell is provided with multiple inner guide wheels and multiple inner magnets. The inner magnets are magnetically attracted to the outer magnets. A lower magnetic base is fixedly connected to the upper part of the fixing frame. The lower magnetic base and the upper magnetic base are magnetically repelled. The fixing frame is fixedly connected to the inner shell. An electric cylinder is fixedly installed on the fixing frame. The electric cylinder passes through the inner shell and is fixedly connected to a piston. The piston is located in the inner shell. The inner shell is connected to the airbag through a hose.

[0012] Preferably, the inner ring is fixedly connected to two partitions, which divide the inner ring into three independent cavities. The dust removal assembly includes a dust collection device. The dust outlets at both ends of the dust collection device are connected to two of the independent cavities of the inner ring. The dust inlet of the dust collection device is connected to the ring shell. The ring shell is fixedly connected to the outer surface of the inner ring. The ring shell is provided with multiple dust collection heads. Each dust collection head is provided with a valve. A second gear is fixedly connected to the valve shaft of the valve. The dust collection control assembly includes a guide frame, which is fixedly connected to the ring shell. A toothed rod is slidably connected in the guide frame, and the toothed rod meshes with a second gear. A magnetic block is fixedly connected to the top of the toothed rod, and a second spring is fixedly connected between the magnetic block and the guide frame. The magnetic block and the magnetic plate are magnetically repelled.

[0013] Preferably, the circulation assembly includes a circulation pump, which is fixedly connected inside the middle ring by a fixing plate. The inlet of the circulation pump is connected to two airbags through pipes, and the outlet of the circulation pump is connected to a phase change cold storage heat exchange device. The output end of the phase change cold storage heat exchange device is connected to the two airbags.

[0014] Preferably, the outer surfaces of the airbag and the middle ring are provided with multiple staggered drainage plates, so that the coolant flows in a serpentine manner in the airbag. A sealing partition is fixedly connected between the airbag and the middle ring, and the output end and the pipe of the phase change cold storage heat exchange device are located on both sides of the sealing partition.

[0015] Compared with the prior art, the present invention provides a fixed-length follow-up cutting device for thin-walled, large-diameter, high-elasticity rubber and plastic tubes, which has the following beneficial effects: 1. This thin-walled, large-diameter, high-elasticity rubber and plastic tube fixed-length follow-up cutting equipment follows the movement of the trolley through the ring cutting mechanism and moves through the magnetic attraction traction support and cooling mechanism. When the position approaches the detection component and keeps in correspondence with the lower magnetic seat, it can ensure that the cutting area is accurately limited between the two airbags. At the same time, the hydraulic expansion component pushes the coolant into the airbag, and the expansion of the airbag can closely adhere to the inner wall of the rubber and plastic tube, realizing flexible centering support for the tube walls on both sides of the cutting area, avoiding tube wall compression damage caused by rigid support. At the same time, the expanded airbag can form a physical isolation boundary, effectively blocking the internal channels of the rubber and plastic tube and preventing cutting debris from moving into the depth, providing a stable structural foundation for fixed-point cutting and isolation protection.

[0016] 2. This thin-walled, large-diameter, high-elasticity rubber and plastic tube fixed-length follow-up cutting device, by setting a sealing partition in the airbag, can separate the output end of the phase change cold storage heat exchange device from the inlet end of the pipe, thereby forming a circumferential circulation flow path. At the same time, the airbag is equipped with staggered partitions, which make the coolant flow in a tortuous serpentine shape, extending the heat exchange path of the coolant, improving the overall heat exchange uniformity and heat dissipation efficiency of the airbag, and reducing the problems of heat melting, burrs, softening and deformation of the rubber and plastic tube cut. During circumferential cutting, the movement of the magnetic plate can generate magnetic repulsion with the corresponding magnetic block, which can drive the rack and gear transmission to open the dust suction head in the cutting area, realizing negative pressure concentrated adsorption, and accurately sucking up the debris generated during the cutting process. Compared with the all-area chip suction structure, the chip suction efficiency is higher, the chip cleaning is more thorough, and there is no chip residue pollution.

[0017] 3. This thin-walled, large-diameter, high-elasticity rubber and plastic pipe fixed-length follow-up cutting equipment uses a hydraulic expansion component to press in coolant to maintain the expansion of the airbag, forming a uniform and flexible internal support for the rubber and plastic pipe. This reduces the problems of pressure collapse and out-of-roundness of the cut during cutting. Furthermore, the independent and closed cutting zone is constructed by isolating and sealing the front and rear of the airbag, so that the negative pressure of the follow-up chip suction is completely concentrated in the cutting area, avoiding the pipe wall collapse caused by the negative pressure suction of the dust removal component, and preventing chip residue from entering the pipe. Meanwhile, the coolant inside the airbag is circulated and cooled by the circulation component, continuously maintaining a constant temperature and cooling the cutting point while ensuring the stability of the flexible support. This effectively improves the high-temperature heat melting defects of thin-walled rubber and plastic pipes. The three functions work together to simultaneously achieve precise cutting of rubber and plastic pipes to prevent collapse, efficient cooling and shaping of the cut, and directional and concentrated collection of cutting chips. This solves the problems of easy deformation, easy heat melting, chip residue, and pipe wall collapse in traditional thin-walled, high-elasticity rubber and plastic pipe cutting, and improves the pipe cutting accuracy, cut smoothness, and finished product qualification rate. Attached Figure Description

[0018] Figure 1 This is an assembly view of a fixed-length follower cutting device for thin-walled, large-diameter, high-elasticity rubber and plastic pipes proposed in this invention. Figure 2 This is a three-dimensional sectional view of the assembly of a thin-walled, large-diameter, high-elasticity rubber and plastic pipe fixed-length follower cutting device proposed in this invention. Figure 3 This is a three-dimensional cross-sectional view of the circumferential cutting mechanism of a fixed-length follower cutting device for thin-walled, large-diameter, high-elasticity rubber and plastic pipes proposed in this invention. Figure 4 This is a three-dimensional cross-sectional view of the drive assembly of a fixed-length follower cutting device for thin-walled, large-diameter, high-elasticity rubber and plastic pipes proposed in this invention. Figure 5 This is a perspective view of the drive assembly of a fixed-length follower cutting device for thin-walled, large-diameter, high-elasticity rubber and plastic pipes proposed in this invention. Figure 6This is a perspective view of the position proximity detection component of a fixed-length follower cutting device for thin-walled, large-diameter, high-elasticity rubber and plastic pipes proposed in this invention. Figure 7 This is a perspective view of the support and cooling mechanism of a fixed-length follow-up cutting device for thin-walled, large-diameter, high-elasticity rubber and plastic pipes proposed in this invention. Figure 8 This is a three-dimensional cross-sectional view of the support and cooling mechanism of a fixed-length follow-up cutting device for thin-walled, large-diameter, high-elasticity rubber and plastic pipes proposed in this invention. Figure 9 This is a three-dimensional cross-sectional view of the middle ring of a fixed-length follower cutting device for thin-walled, large-diameter, high-elasticity rubber and plastic tubes proposed in this invention. Figure 10 In this invention Figure 9 Enlarged view of point A; Figure 11 This is a three-dimensional cross-sectional view of the airbag of a fixed-length follow-up cutting device for thin-walled, large-diameter, high-elasticity rubber and plastic tubes proposed in this invention.

[0019] In the diagram: 100, Ring cutting mechanism; 101, Drive assembly; 1011, Mounting bracket; 1012, Outer rotating ring; 1013, Motor; 1014, Inner ring; 1015, First gear; 1016, Gear ring; 1017, Outer guide wheel; 1018, Outer magnet; 1019, Bracket; 10110, Magnetic plate; 102, Cutting assembly; 1021, Electric push rod; 1022, Cutting machine; 103, Position proximity detection assembly; 1031, Mounting plate; 1032, Side plate; 1033, Alarm; 1034, Switch; 1035, Sliding sleeve; 1036, First spring; 1037, Top head; 1038, Upper magnetic base; 1039, Sliding rod; 200, Support and cooling mechanism; 201, Middle ring; 202, Dust collection control assembly; 2021, Guide frame; 2022, Second spring; 2023, Magnetic block; 2024, Gear rack; 203, Hydraulic expansion assembly; 2031, Fixing frame; 2032, Filter ring; 2033, Electric cylinder; 2034, Piston; 2035, Inner shell; 2036, Inner guide wheel; 2037, Inner magnet; 2038, Hose; 204, Airbag; 205, Dust removal assembly; 2051, Dust collection equipment; 2052, Ring shell; 2053, Dust collection head; 2054, Valve; 2055, Second gear; 206, Circulation assembly; 2061, Circulation pump; 2062, Fixing plate; 2063, Phase change cold storage heat exchange equipment; 2064, Pipeline; 207, Partition plate; 208, Sealing partition; 209, Drainage plate; 210, Lower magnetic base. Detailed Implementation

[0020] Example 1: Refer to Figures 1-8A fixed-length follow-up cutting device for thin-walled, large-aperture, high-elasticity rubber and plastic pipes includes a ring cutting mechanism 100 and a support and cooling mechanism 200. The ring cutting mechanism 100 and the support and cooling mechanism 200 are respectively arranged on the inner and outer rings of the rubber and plastic pipe, and the support and cooling mechanism 200 follows the ring cutting mechanism 100 by magnetic traction. The ring-cutting mechanism 100 includes a drive assembly 101, a cutting assembly 102 disposed above the drive assembly 101, and a position proximity detection assembly 103. The drive assembly 101 includes a mounting frame 1011 and an outer rotating ring 1012. The mounting frame 1011 can be installed on a cutting carriage to ensure a stable connection between the ring-cutting mechanism 100 and the cutting carriage, thereby ensuring the follow-up cutting of the rubber and plastic tube. Two inner rings 1014 are fixedly connected to the top of the mounting frame 1011. The outer rotating ring 1012 is rotatably mounted on the two inner rings 1014 respectively through two bearings. Each of the two inner rings 1014 is provided with multiple outer guide wheels 1017 and multiple outer magnets 1018. The outer guide wheels 1017 can move smoothly along the outer surface of the rubber and plastic tube. The outer magnets 1018, inner magnets 2037, magnetic plates 10110, and magnetic blocks 2023 are also provided. The lower magnetic base 210 is close to the inner and outer walls of the rubber and plastic tube, respectively, thus avoiding direct contact with the rubber and plastic tube. At the same time, the outer magnet 1018, the inner magnet, the magnetic plate 10110, the magnetic block 2023, the upper magnetic base 1038, and the lower magnetic base 210 can be strong magnets or electromagnets to improve the magnetic control effect. The upper wall of the inner cavity of the outer rotating ring 1012 is fixedly connected to the bracket 1019, and one end of the bracket 1019 is fixedly connected to the magnetic plate 10110. The outer rotating ring 1012 is fixedly connected to the gear ring 1016, which meshes with the first gear 1015. The first gear 1015 is fixedly connected to the output shaft of the motor 1013. The motor 1013 drives the first gear 1015 and the gear ring 1016 to drive the outer rotating ring 1012 to drive the cutting machine 1022 to rotate for circumferential cutting.

[0021] The cutting assembly 102 includes an electric push rod 1021, which is fixedly mounted on the outer rotating ring 1012. One end of the electric push rod 1021 is fixedly connected to a cutting machine 1022. The cutting machine 1022 can be equipped with a displacement sensor or a limit switch to control the feed rate. The device can also have a built-in battery and a wireless controller. Power is supplied via a flexible cable introduced from the pipe inlet through magnetic induction. An external magnetic switch sequentially triggers the internal components. The proximity detection assembly 103 includes a mounting plate 1031, which is fixedly connected to the inner ring 1014. A motor 1013 is fixedly connected to the mounting plate 1031. A side plate 1032 is fixedly connected to one side of the mounting plate 1031. An alarm 1033 and a switch 10 are respectively provided above and below the side plate 1032. 34. A sliding sleeve 1035 is fixedly connected to the mounting plate 1031. A sliding rod 1039 is slidably connected in the sliding sleeve 1035. A top head 1037 and an upper magnetic seat 1038 are fixedly connected to both ends of the sliding rod 1039, respectively. The top head 1037 overlaps with the switch 1034. A first spring 1036 is fixedly connected between the top head 1037 and the sliding sleeve 1035. The first spring 1036 is sleeved on the outside of the sliding rod 1039. It is kept in correspondence with the lower magnetic seat 210 through the upper magnetic seat 1038. This ensures that the ring cutting mechanism 100 and the support and cooling mechanism 200 are close in position, reducing cutting deviation. At the same time, when the upper magnetic seat 1038 and the lower magnetic seat 210 deviate, the first spring 1036 can drive the top head 1037 to separate from the switch 1034, so that the alarm 1033 can sound an alarm. The support and cooling mechanism 200 includes a middle ring 201. Inside the middle ring 201 are a circulation component 206 and a dust removal component 205. The dust removal component 205 has multiple suction control components 202. Hydraulic expansion components 203 are located at both ends of the middle ring 201. Each hydraulic expansion component 203 includes a fixing frame 2031 and an inner shell 2035. A filter ring 2032 is fixedly connected to one side of the inner shell 2035. The filter ring 2032 is fixed to the middle ring 201 by clamps. The filter ring 2032 maintains ventilation inside the middle ring 201 while intercepting debris. When debris needs to be cleaned, the clamps are removed. Due to the flexible hose 20... 38 has retractable mobility, allowing the inner shell 2035 to be separated from the middle ring 201 for easy cleaning of internal debris. The outer surface of the inner shell 2035 is provided with multiple inner guide wheels 2036 and multiple inner magnets 2037. The inner guide wheels 2036 allow for stable movement along the inner wall of the rubber-plastic tube. The inner magnets 2037 and outer magnets 1018 are magnetically attracted. This magnetic attraction between the outer magnets 1018 and inner magnets 2037 allows the support and cooling mechanism 200 to move with the ring-cutting mechanism 100. A lower magnetic base 210 is fixedly connected to the upper part of the fixing frame 2031. The lower magnetic base 210 and upper magnetic base 1038 are magnetically repelled. 031 is fixedly connected to the inner shell 2035. An electric cylinder 2033 is fixedly installed on the fixing bracket 2031. The electric cylinder 2033 passes through the inner shell 2035 and is fixedly connected to the piston 2034. By pushing the piston 2034 with the electric cylinder 2033, coolant can be pushed into the airbag 204, causing the airbag 204 to expand and conform to the rubber tube, maintaining flexible support for the inside of the rubber tube. Simultaneously, the electric cylinder 2033 retracts, drawing the coolant inside the airbag 204 back into the inner shell 2035. The piston 2034 is located inside the inner shell 2035, which is connected to the airbag 204 via a hose 2038. Two hydraulic expansion components 2... 03 is connected to two airbags 204 respectively. The surface of the airbag 204 can be coated with an organosilicon wear-resistant coating, or the surface can be subjected to a controllable low-temperature cross-linking treatment. This can improve the hardness of the airbag 204 and reduce the impact damage of debris without affecting the expansion of the airbag 204. The two airbags 204 are fixedly connected to the surface of the middle ring 201. The two airbags 204 are connected to the circulation component 206. When the hydraulic expansion component 203 is aligned with the position proximity detection component 103, the two hydraulic expansion components 203 can expand the two airbags 204 respectively, and make the two airbags 204 tightly adhere to both sides of the cut part of the inner wall of the rubber and plastic tube.

[0022] In this embodiment: the ring cutting mechanism 100 moves with the trolley and is supported and cooled by the magnetic attraction mechanism 200. When the position is close to the detection component 103 and the lower magnetic base 210, the cutting area can be precisely limited between the two airbags 204. At the same time, the hydraulic expansion component 203 pushes the coolant into the airbags 204. The expansion of the airbags 204 can fit tightly against the inner wall of the rubber and plastic tube, realizing flexible centering support for the tube walls on both sides of the cutting area, avoiding the tube wall compression damage caused by rigid support. At the same time, the expanded airbags 204 can form a physical isolation boundary, effectively blocking the internal channels of the rubber and plastic tube and preventing the cutting debris from moving deeper, providing a stable structural foundation for fixed-point cutting and isolation protection.

[0023] Example 2: Refer to Figure 4 and Figures 9-11 A fixed-length follow-up cutting device for thin-walled, large-aperture, high-elasticity rubber and plastic tubes includes a dust collection control component 202. The dust collection control component 202 includes a guide frame 2021, which is fixedly connected to an annular shell 2052. A toothed rod 2024 is slidably connected within the guide frame 2021, meshing with a second gear 2055. A magnetic block 2023 is fixedly connected to the top of the toothed rod 2024. A second spring 2022 is fixedly connected between the magnetic block 2023 and the guide frame 2021. The magnetic block 2023 and a magnetic plate 10... 110 Magnetic repulsion: When the magnetic plate 10110 corresponds to the magnetic block 2023, the magnetic plate 10110 can control the movement of the corresponding part of the magnetic block 2023 through magnetic repulsion, so that the gear 2024 and the second gear 2055 can drive the valve 2054 to open the dust suction head 2053 in the cutting area, which is convenient for targeted chip removal. When the magnetic plate 10110 and the magnetic block 2023 are separated, the second spring 2022 can drive the gear 2024 to reset, so that the valve 2054 can close the dust suction head 2053. The middle ring 201 has two partitions 207 fixedly connected inside, which divide the middle ring 201 into three independent cavities. The two independent cavities on both sides of the middle ring 201 can collect debris, while the independent space in the middle can isolate the circulation component 206. The dust removal component 205 includes a vacuum cleaner 2051. The dust outlets at both ends of the vacuum cleaner 2051 are connected to two of the independent cavities of the middle ring 201. The dust inlet of the vacuum cleaner 2051 is connected to the ring shell 2052. The ring shell 2052 is fixedly connected to the outer surface of the middle ring 201. Multiple vacuum heads 2053 are provided on the ring shell 2052. The vacuum cleaner 2051 can vacuum up debris through the vacuum heads 2053 to reduce debris residue. A valve 2054 is provided on the vacuum head 2053. A second gear 2055 is fixedly connected to the valve shaft of the valve 2054. The circulation assembly 206 includes a circulation pump 2061, which is fixedly connected to the inside of the central ring 201 via a fixing plate 2062. The inlet of the circulation pump 2061 is connected to two airbags 204 via pipes 2064. A regulating valve can be added to the branch pipes connecting the pipes 2064 and the two airbags 204. The regulating valve is equipped with a flow pressure sensor to detect the flow pressure in the branch pipes of the pipes 2064 and to control the opening and closing of the regulating valves according to the flow rate, maintaining consistent return flow inside the two airbags 204. Similarly, the two output ends of the phase change cold storage heat exchanger 2063 are also equipped with regulating valves to ensure consistent coolant discharge pressure at both ends. The output port of the circulation pump 2061 is connected to the phase change cold storage heat exchanger 2063. Coolant is extracted and introduced into the phase change cold storage heat exchanger 2063, which contains pre-stored low-temperature coolant. Each cutting cycle absorbs a certain amount of heat, and after returning to its initial position, it is cooled again by the external heat exchange interface, achieving internal heat exchange and cooling. The cooled coolant then flows back into the airbag 204, thus forming a circulating flow path. The output end of the phase change cold storage heat exchanger 2063 is connected to two airbags 204 respectively. Multiple staggered guide vanes 209 are provided in the airbag 204 and on the outer surface of the middle ring 201, so that the coolant flows in a serpentine manner in the airbag 204. A sealing partition 208 is fixedly connected between the airbag 204 and the middle ring 201. The output end of the phase change cold storage heat exchanger 2063 and the pipe 2064 are located on both sides of the sealing partition 208 respectively.

[0024] In this embodiment: by setting a sealing partition in the airbag 204, the output end of the phase change cold storage heat exchange device 2063 and the inlet end of the pipe 2064 can be separated, thereby forming a circumferential circulating flow path. At the same time, the airbag 204 is provided with staggered partitions, which makes the coolant flow in a tortuous serpentine shape, extending the heat exchange path of the coolant, improving the overall heat exchange uniformity and heat dissipation efficiency of the airbag 204, and reducing the problems of heat melting, burrs, softening and deformation of the rubber and plastic pipe cut. At the same time, when performing circumferential cutting, the movement of the magnetic plate 10110 can generate magnetic repulsion with the corresponding magnetic block 2023, thereby driving the rack 2024 and gear transmission to open the dust suction head 2053 in the cutting area, realizing negative pressure concentrated adsorption, and accurately sucking up the debris generated during the cutting process. Compared with the all-area chip suction structure, the chip suction efficiency is higher, the chip cleaning is more thorough, and there is no chip residue pollution.

[0025] Example 3: Reference Figures 2-4 and Figures 7-8A fixed-length follow-up cutting device for thin-walled, large-aperture, high-elasticity rubber and plastic pipes includes a support and cooling mechanism 200. The support and cooling mechanism 200 includes a middle ring 201. The middle ring 201 is internally equipped with a circulation component 206 and a dust removal component 205. The dust removal component 205 is equipped with multiple dust suction control components 202. Both ends of the middle ring 201 are equipped with hydraulic expansion components 203. The two hydraulic expansion components 203 are respectively connected to two airbags 204. The two airbags 204 are fixedly connected to the outer surface of the middle ring 201 and are connected to the circulation component 206. When the hydraulic expansion components 203 are aligned with the position proximity detection component 103, the two hydraulic expansion components 203 can expand the two airbags 204 respectively, and make the two airbags 204 tightly adhere to both sides of the cutting part of the inner wall of the rubber and plastic pipe.

[0026] In this embodiment: the hydraulic expansion component 203 presses in coolant to keep the airbag 204 inflated, forming a uniform and flexible internal support for the rubber-plastic pipe, reducing the problems of pressure collapse and out-of-roundness of the cut. The airbag 204 is isolated and sealed at the front and rear to create an independent and closed cutting zone, so that the negative pressure of the follow-up chip suction is completely concentrated in the cutting area, avoiding the pipe wall collapse caused by the negative pressure suction of the dust removal component 205, and preventing the internal migration and residue of debris. The coolant inside the airbag 204 is circulated and cooled by the circulation component 206, which continuously keeps the cutting point at a constant temperature while ensuring the stability of the flexible support, effectively improving the high-temperature heat melting defects of thin-walled rubber-plastic pipes. The three functions work together to simultaneously achieve precise cutting of rubber-plastic pipes to prevent collapse, efficient cooling and shaping of the cut, and directional and concentrated collection of cutting debris. This solves the problems of easy deformation, easy heat melting, debris residue, and pipe wall collapse in traditional thin-walled high-elasticity rubber-plastic pipes, improving the pipe cutting accuracy, cut flatness, and finished product processing qualification rate.

[0027] Working principle: When cutting thin-walled high-elasticity rubber and plastic tubes, the mounting bracket 1011 is installed on the cutting carriage, which drives the circumferential cutting mechanism 100 to move. The outer magnet 1018 attracts the inner magnet 2037 through magnetic attraction, allowing the support and cooling mechanism 200 to enter the inner cavity from one end of the rubber and plastic tube. Meanwhile, the circumferential cutting mechanism 100 moves along the outer surface of the rubber and plastic tube. When the support and cooling mechanism 200 enters the inner cavity of the rubber and plastic tube, the lower magnetic seat 210 and the upper magnetic seat 1038 repel each other magnetically, and the top head 1037 contacts the switch 1034. The alarm 1033 is in the off state, which indicates that the support and cooling mechanism 200 and the circumferential cutting mechanism 100 are close in position. If the lower magnetic seat 210 and the upper magnetic seat 1038 deviate, the first spring 1036 can drive the top head 1037 to reset and disengage from the switch 1034. At this time, the alarm 1033 will sound an alarm to remind the user to readjust the position of the support and cooling mechanism 200. After correction, the electric cylinder 2033 is controlled to push the piston 2034 to move. The piston 2034 inputs the coolant inside the inner shell 2035 into the airbag 204. The airbag 204 expands and fits tightly against the inner wall of the rubber-plastic tube for flexible support. Then, the electric push rod 1021 pushes the cutting machine 1022 downward to contact the rubber-plastic tube. The cutting machine 1022 performs the cutting operation. During the cutting process, the rubber-plastic tube is continuously output from the extrusion equipment. At the same time, the cutting carriage drives the ring cutting mechanism 100 to follow the movement of the rubber-plastic tube and controls the motor 1013 to drive the first gear 1015 and the gear ring 1016 for transmission. The gear ring 1016 drives the outer rotating ring 1012 to rotate. The outer rotating ring 1012 drives the cutting machine 1022 to perform circumferential cutting. During the cutting process, the circulating pump 2061 circulates and draws the coolant inside the airbag 204. After being cooled by the phase change cold storage heat exchange device 2063, it is transported back to the airbag 204 to realize the circulation and heat exchange of the coolant. Simultaneously, the dust collection device 2051 sucks up debris through the dust collection head 2053 and collects it into the independent cavities on both sides of the middle ring 201. At the same time, the outer rotating ring 1012 rotates, which can drive the support 1019 and the magnetic plate 10110 to move. The magnetic plate 10110 corresponds to the position of the cutting machine 1022. When the magnetic plate 10110 moves to correspond with the corresponding magnetic block 2023, it can drive the rack 2024 and the second gear 2055 to drive through the magnetic repulsion principle. The second gear 2055 drives the valve 2054 to open, and then the dust collection heads 2053 corresponding to the cutting area open in sequence to perform the chip removal operation. After the cutting is completed, the part of the rubber and plastic tube cut off is supported by the external support, and the hydraulic expansion component 203 draws coolant back into the inner shell 2035, so that the cutting carriage drives the ring cutting mechanism 100 and the support and cooling mechanism 200 to move back to the output end of the extrusion equipment to output the rubber and plastic tube, and start the next round of cutting operation.

Claims

1. A fixed-length follow-up cutting device for thin-walled, large-diameter, high-elasticity rubber and plastic pipes, comprising a ring-cutting mechanism (100) and a support and cooling mechanism (200), characterized in that, The ring-cutting mechanism (100) and the support and cooling mechanism (200) are respectively set on the inner and outer rings of the rubber and plastic pipe, and the support and cooling mechanism (200) moves with the ring-cutting mechanism (100) by magnetic traction; The circumferential cutting mechanism (100) includes a driving component (101), a cutting component (102) disposed above the driving component (101), and a position proximity detection component (103). The support and cooling mechanism (200) includes a middle ring (201). The middle ring (201) is equipped with a circulation component (206) and a dust removal component (205). The dust removal component (205) is equipped with multiple dust suction control components (202). Both ends of the middle ring (201) are equipped with hydraulic expansion components (203). The two hydraulic expansion components (203) are respectively connected to two air bags (204). The two air bags (204) are fixedly connected to the outer surface of the middle ring (201). The two air bags (204) are connected to the circulation component (206). When the hydraulic expansion component (203) is aligned with the position proximity detection component (103), the two hydraulic expansion components (203) can expand the two air bags (204) respectively, and make the two air bags (204) tightly adhere to both sides of the cut part of the inner wall of the rubber and plastic tube.

2. The thin-walled, large-diameter, high-elasticity rubber-plastic tube fixed-length follow-up cutting device according to claim 1, characterized in that, The drive assembly (101) includes a mounting bracket (1011) and an outer rotating ring (1012). Two inner rings (1014) are fixedly connected to the top of the mounting bracket (1011). The outer rotating ring (1012) is rotatably mounted on the two inner rings (1014) through two bearings. Each of the two inner rings (1014) is provided with multiple outer guide wheels (1017) and multiple outer magnets (1018).

3. The thin-walled, large-diameter, high-elasticity rubber-plastic tube fixed-length follow-up cutting device according to claim 2, characterized in that, The upper wall of the inner cavity of the outer rotating ring (1012) is fixedly connected to a bracket (1019), and a magnetic plate (10110) is fixedly connected to one end of the bracket (1019).

4. The thin-walled, large-diameter, high-elasticity rubber-plastic tube fixed-length follow-up cutting device according to claim 3, characterized in that, A gear ring (1016) is fixedly connected to the outer rotating ring (1012), and the gear ring (1016) meshes with the first gear (1015), which is fixedly connected to the output shaft of the motor (1013).

5. The thin-walled, large-diameter, high-elasticity rubber-plastic tube fixed-length follow-up cutting device according to claim 2, characterized in that, The cutting assembly (102) includes an electric push rod (1021), which is fixedly mounted on the outer rotating ring (1012), and one end of the electric push rod (1021) is fixedly connected to a cutting machine (1022).

6. The thin-walled, large-diameter, high-elasticity rubber-plastic tube fixed-length follow-up cutting device according to claim 4, characterized in that, The proximity detection component (103) includes a mounting plate (1031), which is fixedly connected to the inner ring (1014). The motor (1013) is fixedly connected to the mounting plate (1031). A side plate (1032) is fixedly connected to one side of the mounting plate (1031). An alarm (1033) and a switch (1034) are respectively provided above and below the side plate (1032). A sliding sleeve (1035) is fixedly connected to the mounting plate (1031). A sliding rod (1039) is slidably connected in the sliding sleeve (1035). A top head (1037) and an upper magnetic seat (1038) are fixedly connected to both ends of the sliding rod (1039). The top head (1037) overlaps with the switch (1034). A first spring (1036) is fixedly connected between the top head (1037) and the sliding sleeve (1035). The first spring (1036) is sleeved on the outside of the sliding rod (1039).

7. The thin-walled, large-diameter, high-elasticity rubber-plastic tube fixed-length follow-up cutting device according to claim 6, characterized in that, The hydraulic expansion assembly (203) includes a fixed frame (2031) and an inner shell (2035). A filter ring (2032) is fixedly connected to one side of the inner shell (2035). The filter ring (2032) is fixed to the middle ring (201) by a clamp. The outer surface of the inner shell (2035) is provided with a plurality of inner guide wheels (2036) and a plurality of inner magnets (2037). The inner magnets (2037) and the outer magnets (1018) are magnetically repelled. A lower magnetic base (210) is fixedly connected to the upper part of the fixing frame (2031). The lower magnetic base (210) and the upper magnetic base (1038) are magnetically repelled. The fixing frame (2031) is fixedly connected to the inner shell (2035). An electric cylinder (2033) is fixedly installed on the fixing frame (2031). The electric cylinder (2033) passes through the inner shell (2035) and is fixedly connected to the piston (2034). The piston (2034) is located in the inner shell (2035). The inner shell (2035) is connected to the airbag (204) through a hose (2038).

8. The thin-walled, large-diameter, high-elasticity rubber-plastic tube fixed-length follow-up cutting device according to claim 7, characterized in that, The middle ring (201) is internally fixedly connected to two partitions (207), which divide the middle ring (201) into three independent cavities. The dust removal assembly (205) includes a dust collection device (2051). The dust outlets at both ends of the dust collection device (2051) are connected to two of the independent cavities of the middle ring (201). The dust inlet of the dust collection device (2051) is connected to the ring shell (2052). The ring shell (2052) is fixedly connected to the outer surface of the middle ring (201). The ring shell (2052) is provided with multiple dust collection heads (2053). The dust collection heads (2053) are provided with valves (2054). A second gear (2055) is fixedly connected to the valve shaft of the valve (2054). The dust collection control assembly (202) includes a guide frame (2021), which is fixedly connected to the ring shell (2052). A toothed rod (2024) is slidably connected in the guide frame (2021). The toothed rod (2024) meshes with a second gear (2055). A magnetic block (2023) is fixedly connected to the top of the toothed rod (2024). A second spring (2022) is fixedly connected between the magnetic block (2023) and the guide frame (2021). The magnetic block (2023) and the magnetic plate (10110) are magnetically repelled.

9. The thin-walled, large-diameter, high-elasticity rubber-plastic tube fixed-length follower cutting device according to claim 1, characterized in that, The circulation assembly (206) includes a circulation pump (2061), which is fixedly connected to the inside of the middle ring (201) by a fixing plate (2062). The inlet of the circulation pump (2061) is connected to two air bags (204) through a pipe (2064). The outlet of the circulation pump (2061) is connected to a phase change cold storage heat exchange device (2063). The outlet of the phase change cold storage heat exchange device (2063) is connected to two air bags (204) respectively.

10. The thin-walled, large-diameter, high-elasticity rubber-plastic tube fixed-length follow-up cutting device according to claim 9, characterized in that, The airbag (204) and the outer surface of the middle ring (201) are provided with multiple staggered drainage plates (209) so that the coolant flows in a serpentine manner in the airbag (204). A sealing partition (208) is fixedly connected between the airbag (204) and the middle ring (201). The output end of the phase change cold storage heat exchange device (2063) and the pipe (2064) are located on both sides of the sealing partition (208).

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