Copper pipe cutter for refrigeration accessory machining

Abstract

The invention provides a copper pipe cutter for refrigeration accessory machining, and relates to the technical field of copper pipe cutting, the copper pipe cutter comprises a mounting sleeve, the outer wall of the mounting sleeve is sleeved with an expansion sensing mechanism, the expansion sensing mechanism comprises four transmission mounting seats, an adjustable cutting mechanism is mounted in one transmission mounting seat, and the adjustable cutting mechanism is mounted in the other transmission mounting seat. And the interiors of the other three transmission mounting bases communicate with one another to form scrap collecting mechanisms, and the tail of the mounting sleeve is rotationally connected with a rotating assembly. According to the self-adaptive positioning device, precise self-adaptive positioning is achieved through a rotating compression sensor in the expansion sensing mechanism, and the adaptability and positioning precision of copper pipes of different specifications are improved; the adjustable cutting mechanism is matched with the rotating assembly to achieve efficient and stable circumferential cutting, cutting efficiency is improved, meanwhile, the section is flat and smooth, follow-up cost is reduced, and the service life of a cutter is prolonged. And the chipping collecting mechanism is intelligently linked with the powerful fan, chippings are collected in real time through a closed airflow channel and an automatic chipping discharging function, and operation continuity is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of copper tube cutting, and specifically to a copper tube cutter for refrigeration fitting processing. Background Art

[0002] In the field of refrigeration fitting processing, the traditional method of cutting copper tubes from the outside has many limitations, which makes the need for internal cutting from the outside increasingly prominent.

[0003] On the one hand, some refrigeration fittings have special structures, such as copper tube components with multiple layers of nesting and complex inner walls. External cutting is difficult to accurately cut specific parts, and may also damage the surrounding structures. Internal cutting from the outside can penetrate into the interior of the copper tube to precisely truncate the designated position, meeting the processing requirements of complex fittings, improving product accuracy and adaptability. On the other hand, when cutting from the outside, the tool is unevenly stressed, easily generating large vibrations and noises, which not only affect the cutting quality but also accelerate tool wear. When cutting from the inside to the outside, the tool is relatively evenly stressed, which can effectively reduce vibrations and noises, extend the tool life, reduce the tool replacement frequency and cost. In addition, after external cutting of some copper tubes, problems such as burrs and deformation are likely to occur at the ports, requiring additional grinding and shaping processes. Internal cutting from the outside can better control the incision shape during cutting, reduce burrs and deformation, lower subsequent processing costs and time, and improve production efficiency. More importantly, with the development of refrigeration equipment towards miniaturization and integration, the requirements for the cutting accuracy and surface quality of copper tubes are getting higher and higher. Internal cutting from the outside can better meet these stringent standards, ensure the sealing and stability of the refrigeration system, and improve the overall performance and quality of refrigeration equipment. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art that traditional copper tube cutting equipment is difficult to achieve internal cutting of copper tubes, has poor cutting accuracy, debris is likely to cause equipment failures, and maintenance is difficult. A copper tube cutter for refrigeration fitting processing is proposed. The cutter realizes precise cutting from the inside to the outside by placing the overall structure inside the copper tube to meet the processing requirements of special refrigeration fittings; uses an expansion sensing mechanism and an adjustable cutting mechanism in cooperation to improve cutting accuracy and stability; relies on a closed debris collection mechanism and an intelligent chip removal design to avoid damage to the equipment caused by debris; at the same time, optimizes the equipment structure to make its key components easy to disassemble and repair, reducing the maintenance difficulty and cost, so as to comprehensively improve the processing quality, equipment reliability and production efficiency of copper tube cutting.

[0005] To achieve the above object, the present invention adopts the following technical solution: A copper pipe cutter for refrigeration fitting processing, comprising a mounting sleeve, an expansion sensing mechanism is sleeved on the outer wall of the mounting sleeve, the expansion sensing mechanism includes four driving mounting seats, an adjustable cutting mechanism is installed inside one of the driving mounting seats, and the interiors of the other three driving mounting seats are interconnected with a debris collection mechanism, and a rotating assembly is rotatably connected to the tail of the mounting sleeve.

[0006] Preferably, the expansion sensing mechanism includes a sliding sleeve, a set of rotating seats are fixedly installed on the outer wall of the sliding sleeve, a set of driving flexure arms are rotatably connected to the outer wall of each rotating seat, the inner rotating shafts of the driving flexure arms are rotatably connected to the interiors of the driving mounting seats, a set of pressing sensor mounting seats are fixedly installed inside each driving mounting seat, and a rotating pressing sensor is rotatably connected to the interiors of the set of pressing sensor mounting seats through a shaft. It is characterized in that: the outer walls of the set of rotating pressing sensors cooperate with the pipe to be cut, can measure the distance, control the range of the driving mounting seats spreading around, and reduce the friction force on the inner wall of the cutting pipe during cutting.

[0007] Preferably, the adjustable cutting mechanism includes a first installation groove, a second electric telescopic rod is fixedly installed inside the first installation groove, the output end of the second electric telescopic rod is fixedly connected with a mounting plate, a cutting knife is fixedly installed on the outer surface of the mounting plate, a set of third limit sliding grooves are fixedly opened on the outer surface of the third limit sliding groove, a dust-proof cover is fixedly installed inside the first installation groove through screws, a set of second limit sliding blocks are fixedly connected to the outer surface of the mounting plate, a through hole is opened inside the dust-proof cover, and the outer wall of the cutting knife cooperates with the inside of the through hole.

[0008] Preferably, the debris collection mechanism includes a set of second installation grooves, a dust suction chamber is arranged inside each second installation groove, each dust suction chamber is interconnected with a first connecting pipe, a telescopic hose is fixedly connected to the surface flange of one of the dust suction chambers, the outer wall of the telescopic hose is inserted into the interior of one of the driving mounting seats, and one end of the telescopic hose is fixedly connected with a sliding communication seat, one end of the sliding communication seat is fixedly connected with a second connecting pipe, one end of the second connecting pipe is fixedly connected with a collection bin, a partition net is fixedly connected to the bottom of the collection bin, and a micro-gate is fixedly connected to the outer wall of the collection bin.

[0009] Preferably, a fixed rotating ring is fixedly connected to the outer surface of the mounting sleeve. The outer wall of the fixed rotating ring is rotatably connected to a limiting rotating ring. A protective sleeve is fixedly connected to the outer surface of the limiting rotating ring. One end of the protective sleeve is flange-connected to an integrated pipe. An installation disc is fixedly connected to the inside of the protective sleeve. A mounting seat of a motor is fixedly connected to the outer surface of the installation disc. The output end of the motor is rotationally matched with the inside of the installation disc, and the output end of the motor is fixedly connected to a gear. A toothed ring is engaged with the outer wall of the gear. The input end of a powerful fan is fixedly connected to the output end of the motor.

[0010] Preferably, a first mounting seat is fixedly connected to the inside of the mounting sleeve. A mounting seat of a first electric telescopic rod is fixedly installed on the outer surface of the first mounting seat. A group of first limiting sliding strips are fixedly connected to the outer surface of the mounting sleeve. A cross sliding seat is fixedly sleeved on the outer surface of the mounting sleeve. A second sliding limiting groove is formed inside the cross sliding seat.

[0011] Preferably, a sliding notch is formed on the outer wall of the sliding sleeve. An electric control handle is fixedly connected to the outer wall of the integrated pipe. A tail holding handle is fixedly connected to the tail of the integrated pipe. A first limiting sliding block is fixedly connected to the bottom of each transmission mounting seat.

[0012] Preferably, the inner wall of the second sliding limiting groove of the cross sliding seat is slidably matched with the first limiting sliding block provided on the outer wall of the transmission mounting seat. A self-lubricating wear-resistant coating is embedded at the contact position between the first limiting sliding block and the second sliding limiting groove to reduce sliding friction loss.

[0013] Preferably, the output end of the first electric telescopic rod is fixedly connected to the inner wall of the sliding sleeve. By the expansion and contraction of the first electric telescopic rod, the sliding sleeve is driven to move axially along the mounting sleeve, and then the transmission flexure arm is linked to realize the expansion and contraction actions of the transmission mounting seat.

[0014] Preferably, the micro gate is an electromagnetic control type gate, which is linked with the equipment electronic control system. When the debris accumulation in the collection bin needs to be discharged, the debris is opened to ensure the continuity of debris collection.

[0015] Preferably, in the debris collection mechanism, the dust suction bin, the first connecting pipe, the telescopic hose, the sliding connecting seat, the second connecting pipe and the collection bin are connected in sequence to form a closed air flow channel. Cooperating with the negative pressure suction of the powerful fan, a dust conveying path from the cutting area to the collection bin is constructed. A separation net is arranged on the side of the collection bin close to the powerful fan to intercept dust and prevent it from entering the fan chamber.

[0016] Preferably, the sliding communication seat is slidably disposed inside the sliding slot opening. A limiting protrusion is provided on the side of the sliding communication seat, and a limiting sliding groove adapted to the limiting protrusion is correspondingly formed on the inner wall of the sliding slot opening. When the sliding communication seat slides in the sliding slot opening, the limiting protrusion cooperates with the limiting sliding groove to limit the moving direction of the sliding communication seat and prevent it from shifting under the action of negative pressure suction; at the same time, a length allowance is reserved for the telescopic hose connected to the sliding communication seat to adapt to the sliding stroke of the sliding communication seat, ensuring that the pipeline connectivity of the debris collection mechanism is not affected during the adjustment of the expansion sensing mechanism.

[0017] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1. In the present invention, the rotation pressure sensor in the expansion sensing mechanism cooperates with the inner wall of the copper pipe to be cut for distance measurement, and the expansion range of the transmission mounting seat can be automatically adjusted according to the pipe diameter. Compared with the traditional fixed fixture or manual positioning method, the adaptability and positioning accuracy for copper pipes of different specifications are significantly improved, and the cutting error caused by positioning deviation is reduced, especially suitable for the diverse copper pipe cutting requirements in the processing of refrigeration fittings.

[0018] 2. In the present invention, the adjustable cutting mechanism uses the second electric telescopic rod to drive the cutting knife, and cooperates with the guiding structure of the third limiting sliding groove and the second limiting sliding block to ensure the accurate movement trajectory of the cutting knife. Combined with the circular cutting realized by the rotating assembly, compared with the traditional linear cutting, not only the cutting efficiency is improved, but also the cutting section is smoother and flatter, reducing the subsequent processing cost, while reducing tool wear and extending the service life of the tool.

[0019] 3. In the present invention, the debris collection mechanism and the powerful fan form a closed air flow channel, and the debris generated by cutting is collected in real time through negative pressure suction, and the micro-gate is linked with the electric control system to automatically discharge the debris. Compared with the simple debris cleaning method in the existing cutting equipment, it effectively avoids the influence of debris accumulation on the cutting quality and equipment operation, maintains the cleanliness of the working environment, reduces the risk of equipment failure, and ensures the continuity of the cutting operation.

[0020] 4. In the present invention, the limiting cooperation between the sliding communication seat and the sliding slot opening, and the allowance design of the telescopic hose enable the debris collection pipeline to always remain connected during the adjustment of the expansion sensing mechanism, ensuring stable suction; at the same time, the cross sliding seat cooperates with the first limiting sliding block at the bottom of the transmission mounting seat and is provided with a self-lubricating and wear-resistant coating, reducing the movement friction loss of the mechanism and improving the overall operation stability and reliability of the equipment. Compared with the complex and easily jammed mechanical structure of the existing cutting machine, the present invention is more flexible in operation and more convenient to maintain. Description of the Drawings

[0021] Figure 1 It is a first three-dimensional structure diagram of a copper pipe cutting machine for processing refrigeration fittings proposed by the present invention; Figure 2 This is a second three-dimensional structural schematic diagram of a copper tube cutter for refrigeration fitting processing proposed by the present invention; Figure 3 This is a three-dimensional transmission relationship diagram of the expansion mechanism of a copper tube cutter for refrigeration fitting processing proposed by the present invention; Figure 4 This is a three-dimensional diagram of an adjustable cutting mechanism of a copper tube cutter for refrigeration fitting processing proposed by the present invention; Figure 5 This is a three-dimensional view of the debris collection mechanism of a copper tube cutter for refrigeration fitting processing proposed by the present invention; Figure 6 This is a three-dimensional diagram of a partial debris collection mechanism of a copper tube cutter for refrigeration fitting processing proposed by the present invention; Figure 7 This is a three-dimensional diagram of a rotating assembly of a copper tube cutter for refrigeration fitting processing proposed by the present invention; Figure 8 This is a disassembled three-dimensional diagram of a rotating assembly of a copper tube cutter for refrigeration fitting processing proposed by the present invention; Figure 9 This is a three-dimensional connection relationship diagram of a copper tube cutter for refrigeration fitting processing proposed by the present invention.

[0022] Legend: 1. Installation sleeve; 11. First mounting seat; 12. First electric telescopic rod; 13. First limit sliding bar; 14. Cross sliding seat; 15. Second sliding limit groove; 2. Expansion sensing mechanism; 21. Sliding notch; 201. Sliding sleeve; 202. Rotating seat; 203. Transmission flexure arm; 204. Transmission mounting seat; 205. Compression sensor mounting seat; 206. Rotating compression sensor; 207. First limit sliding block; 3. Adjustable cutting mechanism; 301. First installation groove; 302. Second electric telescopic rod; 303. Installation plate; 304. Cutting knife; 305. Dust-proof cover; 306. Third limit sliding groove; 307. Second limit sliding block; 308. Through hole; 4. Debris collection mechanism; 401. Second installation groove; 402. Dust suction bin; 403. First connecting pipe; 404. Telescopic hose; 405. Sliding connection seat; 406. Second connecting pipe; 407. Collection bin; 408. Partition net; 409. Micro gate; 5. Rotating assembly; 501. Integrated pipe; 502. Protection sleeve; 503. Limit rotating ring; 504. Fixed rotating ring; 505. Motor; 506. Installation disc; 507. Gear; 508. Tooth ring; 509. Strong fan; 6. Electric control handle; 61. Tail holding handle. Detailed implementation manners

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention. Example

[0024] Reference Figure 1 - Figure 8 As shown: A copper tube cutter for refrigeration accessories processing, comprising a mounting sleeve 1, the outer wall of the mounting sleeve 1 is provided with an expansion sensing mechanism 2, the expansion sensing mechanism 2 comprises four transmission mounting seats 204, one of the transmission mounting seats 204 is internally installed with an adjustable cutting mechanism 3, the other three transmission mounting seats 204 are internally connected to each other with a debris collection mechanism 4, the tail of the mounting sleeve 1 is rotatably connected to a rotating assembly 5; the expansion sensing mechanism 2 comprises a sliding sleeve 201, the outer wall of the sliding sleeve 201 is fixedly installed with a group of rotating seats 202, the outer wall of each rotating seat 202 is rotatably connected to a group of transmission bending arms 203, the internal rotating shafts of the transmission bending arms 203 are rotatably connected to the interior of the transmission mounting seat 204, the interior of each transmission mounting seat 204 is fixedly installed with a group of compression sensor mounting seats 205, the interior of a group of compression sensor mounting seats 205 is rotatably connected to a rotational compression sensor 206 through an axis, characterized in that: a group of The outer walls of the rotating pressure sensor 206 cooperate with the pipe to be cut, and can measure the distance, control the range of the transmission mounting seat 204 to spread out in all directions, and reduce the friction of the inner wall of the cutting pipe during cutting. The expansion sensing mechanism 2 achieves precise positioning through a unique design, laying the foundation for subsequent work. The sliding sleeve 201 moves axially along the mounting sleeve 1 under the drive of the first electric telescopic rod 12, driving the rotating seat 202 and the transmission bending arm 203 to work together to expand or contract the four transmission mounting seats 204. The rotating pressure sensor 206 contacts the outer wall of the copper pipe for distance measurement, and feeds back the data to the control system to accurately adjust the position of the transmission mounting seat 204 to ensure that the copper pipe is in the optimal cutting position. During this process, the first limit sliding bar 13 on the outer surface of the mounting sleeve 1 cooperates with the cross sliding seat 14 to provide guidance and stable support for the movement of the transmission mounting seat 204, ensuring the accuracy of positioning. This precise positioning makes subsequent cutting operations more efficient and accurate, reducing cutting errors and material waste caused by positioning deviations. Example

[0025] The adjustable cutting mechanism 3 includes a first installation groove 301, a second electric telescopic rod 302 is fixedly installed inside the first installation groove 301, the output end of the second electric telescopic rod 302 is fixedly connected to a mounting plate 303, a cutting knife 304 is fixedly installed on the outer surface of the mounting plate 303, a set of third limit sliding grooves 306 are fixedly opened on the outer surface of the third limit sliding groove 306, a dust-proof cover 305 is fixedly installed inside the first installation groove 301 by screws, a set of second limit sliding blocks 307 are fixedly connected to the outer surface of the mounting plate 303, a through hole 308 is opened inside the dust-proof cover 305, the outer wall of the cutting knife 304 and the inside of the through hole 308 cooperate with each other. Example two focuses on the adjustable cutting mechanism 3, which closely cooperates with the expansion sensing mechanism 2 to complete the cutting task. When the expansion sensing mechanism 2 completes the positioning of the copper pipe, the second electric telescopic rod 302 is started, and the mounting plate 303 is pushed to move smoothly along the third limit sliding groove 306, driving the cutting knife 304 to pass through the through hole 308 of the dust-proof cover 305 to cut the copper pipe. During this process, the movement path of the cutting knife 304 is accurately defined by the second limit sliding block 307 and the third limit sliding groove 306 to ensure the cutting accuracy. At the same time, the motor 505 in the rotating assembly 5 drives the cutter to rotate through the meshing of the gear 507 and the gear ring 508 to realize multi-angle cutting. The expansion sensing mechanism 2 maintains the stable positioning of the copper pipe and provides a stable cutting object for the cutting knife 304, while the adjustable cutting mechanism 3 performs accurate actions according to the cutting requirements. The two cooperate with each other, greatly improving the flexibility and applicability of cutting. Embodiment

[0026] The debris collection mechanism 4 includes a set of second mounting grooves 401. Inside each of the second mounting grooves 401, a dust suction chamber 402 is provided. Each of the dust suction chambers 402 is interconnected with a first connection pipe 403. A telescopic hose 404 is fixedly connected to the surface flange of one of the dust suction chambers 402. The outer wall of the telescopic hose 404 is inserted into the interior of one of the drive mounting seats 204. And one end of the telescopic hose 404 is fixedly connected to a sliding connection seat 405. One end of the sliding connection seat 405 is fixedly connected to a second connection pipe 406. One end of the second connection pipe 406 is fixedly connected to a collection bin 407. The bottom of the collection bin 407 is fixedly connected with a partition net 408. A micro gate 409 is fixedly connected to the outer wall of the collection bin 407. The debris generated during the cutting operation will affect the working environment and the operation of the equipment. And this cooperation effectively solves this problem. The powerful fan 509 generates negative pressure suction under the drive of the motor 505. The dust suction chamber 402, the first connection pipe 403, the telescopic hose 404, the sliding connection seat 405, the second connection pipe 406 and the collection bin 407 form a closed air flow channel. Under the action of negative pressure, the debris is quickly sucked into the collection bin 407. The partition net 408 prevents the debris from entering the powerful fan 509 and avoids equipment damage; the micro gate 409 is linked with the equipment electronic control system. When the accumulated amount of debris in the collection bin 407 reaches the preset value, it automatically opens to discharge the debris, ensuring the continuity of debris collection. During this process, the sliding connection seat 405 slides flexibly in the sliding slot 21, and together with the length margin reserved by the telescopic hose 404, it ensures that during the adjustment of the expansion sensing mechanism 2, the debris collection pipeline always remains connected and the suction is stably transmitted, effectively collecting the debris. Embodiment

[0027] A fixed rotating ring 504 is fixedly connected to the outer surface of the installation sleeve 1. The outer wall of the fixed rotating ring 504 is rotatably connected to a limit rotating ring 503. A protective sleeve 502 is fixedly connected to the outer surface of the limit rotating ring 503. One end of the protective sleeve 502 is flange-connected to an integrated pipe 501. An installation disc 506 is fixedly connected to the inside of the protective sleeve 502. A mounting seat of a motor 505 is fixedly connected to the outer surface of the installation disc 506. The output end of the motor 505 is rotationally engaged with the inside of the installation disc 506, and a gear 507 is fixedly connected to the output end of the motor 505. A gear ring 508 is engaged with the outer wall of the gear 507. The input end of a powerful fan 509 is fixedly connected to the output end of the motor 505. The synergistic effect of the rotation assembly 5 and other components. The gear 507 at the output end of the motor 505 is engaged with the gear ring 508 to drive the entire cutter to rotate, realizing multi-angle cutting. During the rotation, the expansion sensing mechanism 2 continuously positions and fixes the copper pipe to ensure the stable position of the copper pipe during rotary cutting, providing a reliable basis for cutting. The adjustable cutting mechanism 3 accurately controls the feeding and cutting force of the cutting knife 304 according to the cutting requirements to ensure the cutting quality. At the same time, under the action of the powerful fan 509, the debris collection mechanism 4 synchronously collects the debris generated by cutting, maintains the working environment clean, and avoids the interference of debris on the rotating components and the cutting process. The collaborative work of these multi-components enables the cutter to meet the copper pipe cutting tasks with different shapes and angle requirements, greatly expanding the application range of the equipment. Embodiment

[0028] In the debris collection mechanism 4, a dust suction bin 402, a first connecting pipe 403, a telescopic hose 404, a sliding connection seat 405, a second connecting pipe 406, and a collection bin 407 are connected in sequence to form a closed air flow channel. Cooperating with the negative pressure suction of the powerful fan 509, a dust conveying path from the cutting area to the collection bin 407 is constructed. A partition net 408 is arranged on the side of the collection bin 407 close to the powerful fan 509 to intercept dust and prevent it from entering the fan chamber. The sliding connection seat 405 is slidably arranged inside the sliding slot 21. A limiting protrusion is arranged on the side of the sliding connection seat 405, and a limiting sliding groove adapted to the limiting protrusion is correspondingly opened on the inner wall of the sliding slot 21. When the sliding connection seat 405 slides in the sliding slot 21, the limiting protrusion cooperates with the limiting sliding groove to limit the moving direction of the sliding connection seat 405 and prevent it from shifting under the action of negative pressure suction. At the same time, a length allowance is reserved for the telescopic hose 404 connected to the sliding connection seat 405 to adapt to the sliding stroke of the sliding connection seat 405, ensuring that the pipeline connectivity of the debris collection mechanism 4 is not affected during the adjustment of the expansion sensing mechanism 2. The first mounting seat 11, the first electric telescopic rod 12 inside the mounting sleeve 1, the first limiting sliding strip 13 and the cross sliding seat 14 on the outer surface, etc. provide a stable mounting foundation and movement guidance for other functional mechanisms. The self-lubricating wear-resistant coating reduces the friction loss between the transmission mounting seat 204 and the cross sliding seat 14 and improves the service life of the equipment. In terms of functional cooperation, the electric control handle 6 and the tail holding handle 61 facilitate the operator to control the operation of the equipment. The expansion sensing mechanism 2, the adjustable cutting mechanism 3, the debris collection mechanism 4, and the rotating assembly 5 are coordinated by the control system to orderly complete copper pipe positioning, cutting, debris collection, and multi-angle operations. Each component is interconnected and mutually supported to ensure that the equipment can operate stably and efficiently under various working conditions. Embodiment

[0029] A first mounting seat 11 is fixedly connected inside the mounting sleeve 1. An outer surface of the first mounting seat 11 is fixedly installed with a mounting seat of a first electric telescopic rod 12. A group of first limiting sliding strips 13 are fixedly connected to an outer surface of the mounting sleeve 1. A cross sliding seat 14 is fixedly sleeved and installed on the outer surface of the mounting sleeve 1. A second sliding limiting groove 15 is formed inside the cross sliding seat 14. A sliding notch 21 is formed in an outer wall of the sliding sleeve 201. An electric control handle 6 is fixedly connected to an outer wall of the integrated pipe 501. A tail holding handle 61 is fixedly connected to a tail of the integrated pipe 501. A first limiting sliding block 207 is fixedly connected to a bottom of each of the transmission mounting seats 204. An inner wall of the second sliding limiting groove 15 of the cross sliding seat 14 is in sliding fit with the first limiting sliding block 207 provided on an outer wall of the transmission mounting seat 204. A self-lubricating wear-resistant coating is embedded at a contact position between the first limiting sliding block 207 and the second sliding limiting groove 15 to reduce sliding friction loss. An output end of the first electric telescopic rod 12 is fixedly connected to an inner wall of the sliding sleeve 201. By telescoping of the first electric telescopic rod 12, the sliding sleeve 201 is driven to move axially along the mounting sleeve 1, and then the transmission flexure arm 203 is linked to realize the expansion and contraction actions of the transmission mounting seat 204. The micro-gate 409 is an electromagnetic control type gate and is linked with the equipment electric control system. When the amount of debris accumulated in the collection bin 407 needs to be discharged, the debris is discharged to ensure the continuity of debris collection. The first electric telescopic rod 12 provides power for the expansion sensing mechanism 2 to drive the sliding sleeve 201 to move, and then the expansion and contraction of the transmission mounting seat 204 are realized; the second electric telescopic rod 302 provides power for the adjustable cutting mechanism 3 to control the feed of the cutting knife 304. Under the regulation of the control system, according to the pipe diameter of the copper pipe and the cutting requirements, the actions are precisely adjusted. At the same time, the motor 505 serves as a power source for the rotating assembly 5 and the powerful fan 509. On the one hand, it drives the cutter to rotate, and on the other hand, it provides suction for debris collection. These power components are closely matched with each functional mechanism. Through precise power transmission and regulation, the equipment can efficiently and accurately complete the copper pipe cutting work.

[0030] Usage method and working principle of this device: Usage method Equipment placement: Carefully place the entire cutter into the interior of the copper pipe to be cut, ensuring that the equipment is located on the central axis of the copper pipe, laying the foundation for subsequent operations. Parameter setting: The operator sets the telescopic parameters of the first electric telescopic rod 12 and the second electric telescopic rod 302, as well as the operating parameters such as the rotation speed of the motor 505, according to requirements such as the diameter of the copper pipe and the cutting length, through the electric control handle 6 on the outer wall of the integrated pipe 501. Start operation: Press the start button, and the equipment starts to run, sequentially completing a series of operations such as positioning, cutting, and debris collection. Completion of cutting: After the cutting operation is completed, the equipment automatically stops running. Turn off the power of the equipment through the electric control handle 6, and remove the cutter from the copper pipe. The debris in the collection bin 407 can be discharged and cleaned through the micro-gate 409. Working principle Intelligent positioning and adaptive expansion: After the equipment starts, the first electric telescopic rod 12 starts to work. Its output end pushes the sliding sleeve 201 to move axially along the mounting sleeve 1. The rotating seat 202 on the outer wall of the sliding sleeve 201 drives the transmission flexure arm 203 to rotate, causing the four transmission mounting seats 204 to gradually expand outwards. When the rotation pressure sensor 206 in the transmission mounting seat 204 is in close contact with the inner wall of the copper pipe, the sensor senses the wall pressure and distance in real time and feeds the data back to the control system. Based on this data, the control system precisely adjusts the expansion degree of the transmission mounting seat 204, enabling the cutter to be firmly positioned inside the copper pipe, while optimizing the cutting position, reducing the friction between the cutting tool and the pipe wall during cutting, and ensuring the accuracy and stability of the cutting work. Efficient rotary cutting: After positioning, the adjustable cutting mechanism 3 and the rotating assembly 5 work together. The second electric telescopic rod 302 pushes the mounting plate 303. The second limit sliding block 307 on the outer surface of the mounting plate 303 cooperates with the third limit sliding groove 306 of the first mounting groove 301 to guide, driving the cutting tool 304 to move smoothly and pass through the through-hole 308 of the dust-proof cover 305, contacting the inner wall of the copper pipe. At the same time, the motor 505 starts, and the gear 507 at its output end meshes with the gear ring 508, driving the entire cutter to rotate inside the copper pipe. The cutting tool 304 makes a circular motion along the inner wall of the copper pipe as the equipment rotates, achieving 360° continuous cutting to ensure that the copper pipe is completely cut off. This rotary cutting method can not only reduce the accumulation of cutting errors, make the cutting section smoother, but also evenly distribute the force on the cutting tool, reduce the cutting resistance, reduce the equipment load, and extend the service life of the cutting tool and the equipment. Synchronous debris collection: During the cutting process, the motor 505 in the rotating assembly 5 drives the powerful fan 509 to operate simultaneously, generating negative pressure suction. The dust suction bin 402, the first connecting pipe 403, the telescopic hose 404, the sliding connecting seat 405, the second connecting pipe 406, and the collection bin 407 form a closed air flow channel. The debris generated by cutting scatters around due to the centrifugal force and air flow disturbance generated by rotation, and is quickly sucked into the collection bin 407 under the action of negative pressure suction. The partition net 408 at the bottom of the collection bin 407 effectively blocks the debris to prevent it from entering the powerful fan 509 and causing damage.When the accumulation amount of debris in the collection bin 407 reaches the preset value, the electromagnetic control type micro-gate 409 linked with the equipment's electronic control system automatically opens to discharge the debris. During this process, the sliding connection seat 405 slides flexibly within the sliding notch 21. The limit protrusion on its side cooperates with the limit sliding groove to ensure the accurate moving direction. At the same time, the reserved length margin of the telescopic hose 404 ensures that during the cutting process, regardless of how the diameter of the copper pipe changes, the debris collection pipeline always remains connected, and the suction force is stably transmitted, efficiently completing the debris collection work, maintaining the cleanliness inside the pipe, ensuring the continuous progress of the cutting operation, precise control and coordinated operation: The operator manipulates the equipment outside the copper pipe through the electronic control handle 6 and the tail holding handle 61. The electronic control handle 6 can remotely send instructions to precisely control the telescoping of the first electric telescopic rod 12 and the second electric telescopic rod 302, as well as the rotation speed and start / stop of the motor 505, realizing precise operation. Various sensors built into the equipment continuously monitor the operating status of each component and cutting data, and feedback them to the external display terminal, facilitating the operator to monitor and adjust in real time, ensuring that each mechanism such as the expansion sensing mechanism 2, the adjustable cutting mechanism 3, the debris collection mechanism 4, and the rotating assembly 5 closely cooperate and operate orderly under the coordination of the control system, enabling the entire cutting process to be completed safely and efficiently.

[0031] The wiring diagrams of the first electric telescopic rod 2, the pressure sensor mounting seat 205, the rotating pressure sensor 206, the second electric telescopic rod 302, the micro-gate 409, the integrated pipe 501, the motor 505, and the powerful fan 509 in the present invention belong to the well-known common sense in the art. Their working principles are already known technologies, and their models are selected according to actual use. Therefore, the control methods and wiring arrangements of the first electric telescopic rod 2, the pressure sensor mounting seat 205, the rotating pressure sensor 206, the second electric telescopic rod 302, the micro-gate 409, the integrated pipe 501, the motor 505, and the powerful fan 509 will not be explained in detail.

[0032] The above are only the preferred embodiments of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A copper tube cutter for refrigeration fitting processing, characterized in that, It includes an installation sleeve (1), an expansion sensing mechanism (2) is sleeved on the outer wall of the installation sleeve (1), the expansion sensing mechanism (2) includes four driving mounting seats (204), an adjustable cutting mechanism (3) is installed inside one of the driving mounting seats (204), and the interiors of the other three driving mounting seats (204) are interconnected with a debris collection mechanism (4), and a rotating assembly (5) is rotatably connected to the tail of the installation sleeve (1); The expansion sensing mechanism (2) includes a sliding sleeve (201), a group of rotating seats (202) are fixedly installed on the outer wall of the sliding sleeve (201), a group of driving bending arms (203) are rotatably connected to the outer wall of each rotating seat (202), the inner rotating shafts of the driving bending arms (203) are rotatably connected to the interiors of the driving mounting seats (204), a group of pressing sensor mounting seats (205) are fixedly installed inside each driving mounting seat (204), and a rotating pressing sensor (206) is rotatably connected to the interiors of the group of pressing sensor mounting seats (205) through shafts. It is characterized in that: the outer walls of the group of rotating pressing sensors (206) are matched with the pipeline to be cut, can measure the distance, control the range of the driving mounting seat (204) spreading around, and reduce the friction force on the inner wall of the cutting pipeline during cutting; The adjustable cutting mechanism (3) includes a first installation groove (301), a second electric telescopic rod (302) is fixedly installed inside the first installation groove (301), the output end of the second electric telescopic rod (302) is fixedly connected with a mounting plate (303), a cutting knife (304) is fixedly installed on the outer surface of the mounting plate (303), a group of third limiting sliding grooves (306) are fixedly opened on the outer surface of the third limiting sliding groove (306), a dust-proof cover (305) is fixedly installed on the inner wall of the first installation groove (301) by screws, a group of second limiting sliding blocks (307) are fixedly connected to the outer surface of the mounting plate (303), a through hole (308) is opened inside the dust-proof cover (305), and the outer wall of the cutting knife (304) is matched with the inside of the through hole (308); The debris collection mechanism (4) includes a set of second mounting grooves (401). A dust suction bin (402) is arranged inside each of the second mounting grooves (401). Each of the dust suction bins (402) is interconnected with a first connecting pipe (403). A telescopic hose (404) is fixedly connected to the surface flange of one of the dust suction bins (402). The outer wall of the telescopic hose (404) is inserted into the interior of one of the drive mounting seats (204). One end of the telescopic hose (404) is fixedly connected to a sliding connection seat (405). One end of the sliding connection seat (405) is fixedly connected to a second connecting pipe (406). One end of the second connecting pipe (406) is fixedly connected to a collection bin (407). A partition net (408) is fixedly connected to the bottom of the collection bin (407). A micro gate (409) is fixedly connected to the outer wall of the collection bin (407).

2. The copper tube cutter for refrigeration fitting processing according to claim 1, characterized in that: A fixed rotating ring (504) is fixedly connected to the outer surface of the mounting sleeve (1). A limiting rotating ring (503) is rotatably connected to the outer wall of the fixed rotating ring (504). A protective sleeve (502) is fixedly connected to the outer surface of the limiting rotating ring (503). An integrated pipe (501) is flange-connected to one end of the protective sleeve (502). An installation disc (506) is fixedly connected to the interior of the protective sleeve (502). A mounting seat of a motor (505) is fixedly connected to the outer surface of the installation disc (506). The output end of the motor (505) is rotationally matched with the interior of the installation disc (506). The output end of the motor (505) is fixedly connected to a gear (507). A gear ring (508) is meshed with the outer wall of the gear (507). The output end of the motor (505) is fixedly connected to the input end of a powerful fan (509).

3. The copper pipe cutter for refrigeration fitting processing according to claim 2, characterized in that: A first mounting seat (11) is fixedly connected to the interior of the mounting sleeve (1). A mounting seat of a first electric telescopic rod (12) is fixedly installed on the outer surface of the first mounting seat (11). A set of first limiting sliding strips (13) is fixedly connected to the outer surface of the mounting sleeve (1). A cross sliding seat (14) is fixedly sleeved on the outer surface of the mounting sleeve (1). A second sliding limiting groove (15) is formed inside the cross sliding seat (14).

4. A copper tube cutter for refrigeration fitting processing according to claim 1, characterized in that: A sliding notch (21) is formed on the outer wall of the sliding sleeve (201). An electric control handle (6) is fixedly connected to the outer wall of the integrated pipe (501). A tail holding handle (61) is fixedly connected to the tail of the integrated pipe (501). A first limiting sliding block (207) is fixedly connected to the bottom of each of the drive mounting seats (204).

5. The copper tube cutter for refrigeration fitting processing according to claim 3, characterized in that: The inner wall of the second sliding limiting groove (15) of the cross sliding seat (14) is slidably matched with the first limiting sliding block (207) provided on the outer wall of the drive mounting seat (204). A self-lubricating wear-resistant coating is embedded at the contact position between the first limiting sliding block (207) and the second sliding limiting groove (15) to reduce sliding friction loss.

6. A copper tube cutter for refrigeration fitting processing according to claim 3, characterized in that: The output end of the first electric telescopic rod (12) is fixedly connected to the inner wall of the sliding sleeve (201). By the telescopic movement of the first electric telescopic rod (12), the sliding sleeve (201) is driven to move axially along the mounting sleeve (1), thereby driving the transmission flexure arm (203) to realize the expansion and contraction actions of the transmission mounting seat (204).

7. A copper pipe cutter for refrigeration fitting processing according to claim 1, characterized in that: The micro-gate (409) is an electromagnetic control type gate, which is linked with the equipment electronic control system. When the amount of debris accumulated in the collection bin (407) needs to be discharged, it opens to discharge the debris to ensure the continuity of debris collection.

8. A copper tube cutter for refrigeration fitting processing according to claim 1, characterized in that: In the debris collection mechanism (4), the dust suction bin (402), the first connecting pipe (403), the telescopic hose (404), the sliding connecting seat (405), the second connecting pipe (406) and the collection bin (407) are connected in sequence to form a closed air flow channel. Cooperating with the negative pressure suction of the powerful fan (509), a dust conveying path from the cutting area to the collection bin (407) is constructed. The partition net (408) is arranged on the side of the collection bin (407) close to the powerful fan (509) to intercept dust and prevent it from entering the fan chamber.

9. A copper tube cutter for refrigeration fitting processing according to claim 8, characterized in that: The sliding connecting seat (405) is slidably arranged inside the sliding notch (21), and the first mounting groove (301) and the second mounting groove (401) are both opened inside the transmission mounting seat (204).

10. A copper tube cutter for refrigeration fitting processing according to claim 9, characterized in that: A limiting protrusion is arranged on the side of the sliding connecting seat (405), and a limiting sliding groove adapted to the limiting protrusion is correspondingly opened on the inner wall of the sliding notch (21). When the sliding connecting seat (405) slides in the sliding notch (21), the limiting protrusion cooperates with the limiting sliding groove to limit the moving direction of the sliding connecting seat (405) and prevent it from shifting under the action of negative pressure suction. At the same time, a length allowance is reserved for the telescopic hose (404) connected to the sliding connecting seat (405) to adapt to the sliding stroke of the sliding connecting seat (405) and ensure that the pipeline connectivity of the debris collection mechanism (4) is not affected during the adjustment of the expansion sensing mechanism (2).

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