Split type high frequency extrusion device for large caliber square and rectangular tube

Abstract

The application discloses a large-diameter square and rectangular tube split type high-frequency extrusion device and relates to the field of square and rectangular tube manufacturing. A transmission vertical roller is arranged on the middle end surface of the preset base through a motor. Two lateral sides of the preset base are provided with lateral butt-joint rollers through motors, and the lateral butt-joint rollers are nested with the output shafts of the motors. The large-diameter square and rectangular tube split type high-frequency extrusion device is provided with a split type guiding and locking structure. The split type guiding and locking structure is used for assisting clamping and positioning treatment on the locking state of the split butt-joint roller assembly, solving the problem of inconvenient maintenance of the integral extrusion frame, developing a layered detachable structure, researching the influence of a layered connection mode and a positioning structure on the convenience of equipment disassembly and assembly, establishing a more efficient maintenance process, forming a quick disassembly and assembly maintenance process, improving the equipment maintainability, significantly improving the equipment reliability and process stability, promoting the technical progress of the high-frequency extrusion process, and helping to improve the process level of the high-frequency welded pipe equipment field in China.

Description

Technical Field

[0001] This invention relates to the field of square and rectangular tube manufacturing technology, specifically to a split-type high-frequency extrusion device for large-diameter square and rectangular tubes. Background Technology

[0002] Domestic square and rectangular tube extrusion technology is mostly concentrated in the field of small and medium diameter. The extrusion of large diameter tubes still relies on integral structures and traditional sealing solutions. In the existing technology, problems such as welding slag accumulation leading to difficulties in gland disassembly and bearing replacement requiring complete disassembly are common. Moreover, manual adjustment systems are difficult to meet real-time requirements. Some companies have tried split designs, but due to insufficient connection strength or failure of sealing structure, a stable solution has not yet been formed. At present, the industry's research on extrusion technology for large-size tubes is still at the stage of local adaptive adjustment, lacking systematic innovation.

[0003] For example, Chinese patent CN213671158U discloses a square tube extrusion molding equipment, including a fixed base and a telescopic sleeve. Fixed columns are fixedly connected to the left and right sides of the top of the fixed base. A working crossbeam is fixedly connected to one side of the fixed column. A hydraulic cylinder is fixedly installed on the top of the working crossbeam. A hydraulic column is movably sleeved at the bottom of the hydraulic cylinder. A pressure block is fixedly installed at the bottom of the hydraulic column. A lower pressure plate is fixedly installed on the top of the fixed base. Due to the large number of extrusions and the large extrusion force, a lot of debris and dust are generated. Therefore, this device uses an automatic cleaning and recycling device to thoroughly clean the surface of the workbench before operation, and clean the excess debris and dust into the inside of the recycling bin to improve the cleanliness of the equipment.

[0004] For example, Chinese patent CN213495702U discloses an industrial seamless stainless steel square tube extrusion molding equipment, including a mounting plate, a motor, a conveying extrusion mechanism, and an electric heating tube. The motor is mounted at the front of the mounting plate, and the conveying extrusion mechanism is located on the upper front side of the mounting plate, connected to the output shaft of the motor. An electric heating tube is located on the left side of the mounting plate, cooperating with the conveying extrusion mechanism. Through the design of the conveying extrusion mechanism and the electric heating tube, it is possible to extrude stainless steel square tubes of different thicknesses. The design of the cooling spray pipe and coolant tank allows for cooling and shaping of the stainless steel square tubes after extrusion.

[0005] For example, Chinese Patent CN222754089U discloses an extrusion molding device for square tube forming, including an extrusion chamber. A square tube is movably arranged inside the extrusion chamber. A motor is fixedly installed on the front outer wall of the extrusion chamber. The operation of the motor drives the extension block to push the extrusion roller, further increasing the distance between the extrusion roller and the extrusion roller. Then, the operation of the cylinder causes the pressure plate to move downward, further adjusting the height of the extrusion roller and the extrusion roller. Compared with traditional devices, this device adjusts the extrusion width of the extrusion molding mechanism through the setting of the extension mechanism and the setting of the lifting mechanism, effectively reducing the workload. Moreover, the device can be adjusted during extrusion.

[0006] Most of the existing technologies mentioned above improve the overall structure. However, the existing high-frequency extrusion devices for large-diameter square and rectangular tubes still have key technical problems in the current steel pipe extrusion process, such as maintenance difficulties, insufficient assembly precision, and low adjustment efficiency. The traditional integrated assembly structure cannot achieve rapid disassembly, replacement, and maintenance, which leads to the inability to improve the stability of equipment operation and the convenience of maintenance, and thus has certain limitations in use. Summary of the Invention

[0007] The purpose of this invention is to provide a split-type high-frequency extrusion device for large-diameter square and rectangular tubes, in order to solve the key technical problems mentioned in the background art, such as maintenance difficulties, insufficient assembly accuracy and low adjustment efficiency in the current steel pipe extrusion process. The traditional integrated assembly structure cannot achieve rapid disassembly, replacement and maintenance, resulting in the inability to improve the stability of equipment operation and the convenience of maintenance.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A large-diameter square and rectangular tube split high-frequency extrusion device includes a preset base. A vertical drive roller is mounted on the middle surface of the preset base via a motor. Horizontal docking rollers are mounted on both sides of the preset base via motors, and the horizontal docking rollers are nested and docked with the output shaft of the motor. A hydraulic component is mounted on the outer side of the preset base. A docking drive component is provided at the output end of the hydraulic component. A split docking roller assembly is mounted on the outer side of the docking drive component, and a split-type guide locking structure is provided between the split docking roller assembly and the docking drive component. The split-type guide locking structure is used to assist in clamping and positioning the split docking roller assembly in its locked state.

[0010] Furthermore, the split-type guide locking structure is provided with a docking fixing rod, which is fixed to the upper end of the preset base. A transverse abutment is connected through the inner side of the upper end of the docking drive member, and the front end of the transverse abutment corresponds to the upper end of the docking fixing rod. A docking nest is fixedly connected to the outer side of the transverse abutment, and a first spring is fixedly connected to the inner side of the docking nest. The first spring and the outer side of the docking drive member are connected to each other, and the outer side of the docking nest corresponds to the outer side of the shaft end of the split docking roller assembly.

[0011] Furthermore, an abutting docking member is nested inside the docking nesting member, and a built-in reserved liquid bladder is bonded between the abutting docking member and the docking nesting member. A supply hose is bonded to the outside of the built-in reserved liquid bladder, and the supply hose passes through the inside of the docking nesting member. A vertical docking liquid bladder is bonded to the inner wall of the docking nesting member, and the vertical docking liquid bladder is bonded to the end of the supply hose. A locking guide is bonded to the lower end of the vertical docking liquid bladder.

[0012] Furthermore, the lower outer side of the lateral abutment has a beveled structure, and when the docking drive moves the inner nested lateral abutment to contact the upper end of the docking fixing rod, the force-bearing lateral abutment slides along the inner side of the docking drive. At this time, the docking nested part docked on the outer side of the lateral abutment moves laterally along the outer side of the docking drive through the first spring. The outer side of the docking nested part is nested and docked with the outer side of the shaft end of the split docking roller assembly.

[0013] Furthermore, when the outer side of the docking nesting component moves to nest with the split docking roller assembly, the inner force-bearing abutting component will move laterally along the inner side of the docking nesting component, and the abutting component will simultaneously apply pressure to the inner contact of the built-in reserved liquid bladder. The built-in reserved liquid bladder is supplied to the interior of the vertical docking liquid bladder through the supply hose, and the vertical docking liquid bladder pushes the lower locking guide component to move towards the axis of the abutting component. The locking guide component is provided with three angles at the same angle about the center point of the abutting component.

[0014] Furthermore, a slag removal pneumatic structure is provided on the inner side of the preset base, which adaptively cleans the residue generated during the transmission process of the preset base; the slag removal pneumatic structure is provided with a docking eccentric component, which is installed on the outer side of the shaft end of the transverse docking roller; a movable connecting component is nested on the surface of the preset base, and a steel wire docking rope component is fixedly connected to the outer side of the movable connecting component, and the steel wire docking rope component runs through the interior of the preset base.

[0015] Furthermore, the inner wall of the preset base is provided with a built-in air storage chamber, and the inner side of the built-in air storage chamber is provided with a reserved through hole. A fitting and docking component is nested and installed inside the built-in air storage chamber, and the fitting and docking component is docked with the end of the steel wire docking rope component. A second spring is fixedly connected to the outer side of the fitting and docking component, and the second spring is docked with the inner side of the built-in air storage chamber. A reserved supply pipe is provided through the inner side of the built-in air storage chamber.

[0016] Furthermore, as the eccentric docking component rotates with the transverse docking roller, it applies pressure synchronously to the contacting movable connecting component, and the movable connecting component drives the mating docking component to move laterally along the interior of the built-in air storage chamber through the steel wire docking rope component.

[0017] Furthermore, when the fitting and docking component moves to one side of the reserved through hole, so that the built-in air storage chamber is in a closed space, the interior of the built-in air storage chamber is in a closed state, and the built-in air storage chamber, together with the fitting and docking component, supplies air to the outside through the reserved supply pipe.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] This large-diameter square and rectangular tube split high-frequency extrusion device is equipped with a split-type guide and locking structure. The split-type guide and locking structure assists in the clamping and positioning of the split docking roller assembly, solving the problem of inconvenient maintenance of the integral extrusion frame. The development of a layered detachable structure and the study of the impact of layered connection methods and positioning structures on the ease of equipment disassembly and assembly will establish a more efficient maintenance process and form a rapid disassembly and assembly maintenance process, improving equipment maintainability. It can significantly improve equipment reliability and process stability, promote the technological progress of high-frequency extrusion technology, and help improve my country's technological level in the field of high-frequency welded pipe equipment.

[0020] Furthermore, during the high-frequency extrusion molding process, the hydraulic components drive the docking drive component downwards to contact the upper end of the workpiece, forming a rectangular extrusion channel in conjunction with the transmission vertical roller and two transverse docking rollers. The transverse abutment component inside the docking drive component will synchronously contact and be force-bearing with the docking fixing rod, thereby allowing the force-bearing transverse abutment component and the docking nesting component to move laterally along the outer side of the docking drive component. At this time, the semi-open sleeve end on the outer side of the docking nesting component will be laterally locked with the outer side of the shaft end of the split docking roller assembly, thus ensuring the operational stability of the workpiece during the extrusion molding process and adaptively performing locking transmission processing, improving the practicality of the device.

[0021] Furthermore, when the mating nesting component docks with the split docking roller assembly, the inner contacting docking component will be simultaneously subjected to force and move laterally, thereby pressurizing the inner built-in reserved liquid bladder. This allows the built-in reserved liquid bladder to supply fluid into the vertical docking liquid bladder through the supply hose. The expanding vertical docking liquid bladder will push the lower locking guide component inward, thereby allowing the three sets of longitudinally limiting locking guide components to cooperate with the laterally positioned mating nesting component to further ensure the self-locking stability of the split docking roller assembly. This ensures stable transmission while avoiding precision deviations and guaranteeing the forming accuracy of the workpiece.

[0022] Furthermore, a slag removal pneumatic structure is provided. This structure adaptively cleans the residue generated during the transmission process of the preset base. During the transverse docking roller transmission, the docking eccentric part at its shaft end will rotate circumferentially. When its outer side contacts the movable connecting part, the movable connecting part will drive the mating part to move laterally along the interior of the built-in air storage chamber through the steel wire docking rope component. When the mating part moves to the side of the reserved through hole, making the interior of the air storage chamber a closed space, the interior of the air storage chamber is in a closed state. At this time, the mating part will supply the gas stored in the interior of the air storage chamber to the outside through the reserved supply pipe, thereby blowing away the residue formed during the equipment processing. At the same time, it assists in heat constant temperature treatment. The slag removal pneumatic structure effectively treats the welding slag accumulation at the extrusion structure, improving the overall protective performance and enhancing the stability of equipment operation in long-term operation. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the pre-set base of the present invention;

[0025] Figure 3 This is a three-dimensional structural diagram of the transverse contact member of the present invention;

[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the vertical transmission roller of the present invention in half section.

[0027] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the central part of the structure;

[0028] Figure 6 This is a three-dimensional structural diagram of the contact joint of the present invention;

[0029] Figure 7 This is a three-dimensional structural diagram of the docking drive component of the present invention;

[0030] Figure 8 This is a three-dimensional structural diagram of the mating and nesting component of the present invention;

[0031] Figure 9 This is a half-section three-dimensional structural diagram of the split docking roller assembly of the present invention;

[0032] Figure 10 This is a three-dimensional structural diagram of the movable connector of the present invention;

[0033] Figure 11 This is a schematic diagram of the three-dimensional structure of the built-in reserved liquid bladder of the present invention;

[0034] Figure 12 This is a three-dimensional structural diagram of the locking guide component of the present invention;

[0035] Figure 13 This is a cross-sectional view of the connection between the docking drive component and the lateral contact component of the present invention.

[0036] In the diagram: 1. Pre-set base; 2. Vertical transmission roller; 3. Horizontal docking roller; 4. Docking drive component; 5. Docking fixing rod; 6. Horizontal contact component; 7. Docking nesting component; 8. First spring; 9. Contact docking component; 10. Built-in reserved liquid bladder; 11. Supply hose; 12. Vertical docking liquid bladder; 13. Locking guide component; 14. Docking eccentric component; 15. Movable connector; 16. Built-in air storage chamber; 17. Reserved through hole; 18. Fitting docking component; 19. Second spring; 20. Steel wire docking rope component; 21. Reserved supply through pipe; 22. Split docking roller assembly. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Example 1: Please refer to Figures 1-13This invention provides the following technical solution: a large-diameter square and rectangular tube split high-frequency extrusion device. To address key technical problems in current steel pipe extrusion processes, such as maintenance difficulties, insufficient assembly precision, and low adjustment efficiency, the traditional integrated assembly structure cannot achieve rapid disassembly, replacement, and maintenance, resulting in a lack of stability and ease of maintenance. The device includes a vertical transmission roller 2 mounted on the middle surface of a pre-set base 1 via a motor; horizontal docking rollers 3 mounted on both sides of the pre-set base 1 via motors, with the horizontal docking rollers 3 nested and docked with the output shaft of the motor; a hydraulic component mounted on the outer side of the pre-set base 1; a docking drive component 4 at the output end of the hydraulic component; a split docking roller assembly 22 mounted on the outer side of the docking drive component 4; and a split-type guide locking structure between the split docking roller assembly 22 and the docking drive component 4. This split-type guide locking structure assists in clamping and positioning the split docking roller assembly 22 in its locking state.

[0039] The split-type guide locking structure is equipped with a docking fixing rod 5, which is fixed to the upper end of the preset base 1. A transverse abutment 6 is inserted through the inner side of the upper end of the docking drive component 4, and the front end of the transverse abutment 6 corresponds to the upper end of the docking fixing rod 5. A docking nesting component 7 is fixedly connected to the outer side of the transverse abutment 6, and a first spring 8 is fixedly connected to the inner side of the docking nesting component 7. The first spring 8 is connected to the outer side of the docking drive component 4, and the outer side of the docking nesting component 7 corresponds to the outer side of the shaft end of the split docking roller assembly 22. An abutment docking component 9 is nested inside the docking nesting component 7. The contacting member 9 and the docking nesting member 7 are bonded together by a built-in reserved liquid bladder 10. The outer side of the built-in reserved liquid bladder 10 is connected to a supply hose 11, which runs along the inner side of the docking nesting member 7. A vertical docking liquid bladder 12 is bonded to the inner wall of the docking nesting member 7, and the ends of the vertical docking liquid bladder 12 and the supply hose 11 are connected to each other. The lower end of the vertical docking liquid bladder 12 is connected to a locking guide member 13. The lower outer side of the transverse abutment member 6 has a beveled structure. When the docking driving member 4 moves the transverse abutment member 6 of the inner nesting docking to contact the upper end of the docking fixing rod 5, the transverse abutment member 6 under force moves along the docking... The inner side of the driving component 4 slides, and at this time, the docking nest 7, which is docked with the outer side of the lateral contact component 6, moves laterally along the outer side of the docking driving component 4 through the first spring 8. The outer side of the docking nest 7 is nested and docked with the outer side of the shaft end of the split docking roller assembly 22. When the outer side of the docking nest 7 moves to the point of being nested with the split docking roller assembly 22, the inner contact contact component 9, which is subjected to force, will move laterally along the inner side of the docking nest 7. The contact contact component 9 simultaneously applies pressure to the inner contact of the built-in reserved liquid bladder 10. The built-in reserved liquid bladder 10 supplies the liquid to the interior of the vertical docking liquid bladder 12 through the supply hose 11. The vertical docking liquid bladder 12... The locking guide 13 at the lower end is pushed to move towards the axis of the contacting docking member 9. The locking guide 13 has three angularly positioned points about the center point of the contacting docking member 9. During the high-frequency extrusion molding process, the hydraulic assembly drives the docking drive 4 downwards. Because the transverse contacting member 6 and the docking drive 4 are nested together (a rectangular groove is provided on the inner side of the docking drive 4, and the transverse contacting member 6 slides and nests along the inner side of the docking drive 4 through the rectangular groove), as the docking drive 4 drives the transverse contacting member 6 downwards, the transverse contacting member 6, with its inclined outer surface, will move until it contacts the docking fixing rod 5 (e.g., ...). Figure 11As shown in the diagram, as the docking fixing rod 5 applies pressure to the lower outer slope of the transverse abutment 6, the stressed transverse abutment 6 will slide along the inner side of the docking drive 4. Simultaneously, the docking nest 7, which docks with the outer side of the transverse abutment 6, will also move laterally along the outer side of the docking drive 4 in conjunction with the first spring 8. At this time, the semi-open sleeve end of the outer side of the docking nest 7 will be laterally locked to the outer side of the shaft end of the split docking roller assembly 22, thereby ensuring its operational stability during the workpiece extrusion process and adaptively performing locking transmission processing. The docking nest 7 and the split docking roller assembly... When component 22 is docked, the inner contact docking component 9 will be simultaneously subjected to force and move laterally, thereby pressurizing the inner built-in reserved liquid bladder 10. This allows the built-in reserved liquid bladder 10 to supply liquid into the interior of the vertical docking liquid bladder 12 through the supply hose 11. The expanding vertical docking liquid bladder 12 will push the lower locking guide component 13 to move towards the axis of the contact docking component 9. This allows the three sets of longitudinally limiting locking guide components 13 to cooperate with the laterally positioned docking nesting component 7, further ensuring the self-locking stability of the split docking roller assembly 22. This ensures stable transmission while avoiding precision deviations.

[0040] Example 2: Based on Example 1, a pneumatic structure for slag removal is also disclosed, the specific structure of which is as follows:

[0041] The inner side of the preset base 1 is provided with a slag removal pneumatic structure, which adaptively cleans and treats the residue generated during the transmission process of the preset base 1.

[0042] The slag removal pneumatic structure is equipped with a docking eccentric component 14, which is installed on the outer side of the shaft end of the transverse docking roller 3. A movable connecting component 15 is nested on the surface of the preset base 1, and a steel wire docking rope component 20 is fixedly connected to the outer side of the movable connecting component 15. The steel wire docking rope component 20 passes through the interior of the preset base 1. An internal air storage chamber 16 is opened on the inner wall of the preset base 1, and a reserved through hole 17 is opened on the inner side of the internal air storage chamber 16. A fitting docking component 18 is nested on the inner side of the internal air storage chamber 16, and the fitting docking component 18 and the end of the steel wire docking rope component 20 are docked together. A second spring 19 is fixedly connected to the outer side of the fitting docking component 18, and the second spring 19 is docked with the inner side of the internal air storage chamber 16. A reserved through hole 17 is provided through the inner side of the internal air storage chamber 16. As the transverse docking roller 3 rotates, the eccentric part 14 applies pressure to the movable connecting part 15 during the rotation of the supply pipe 21. The movable connecting part 15, via the steel wire docking rope component 20, drives the mating part 18 to move laterally along the interior of the built-in air storage chamber 16. When the mating part 18 moves to one side of the reserved through hole 17, making the interior of the air storage chamber 16 a closed space, the interior air storage chamber 16, in conjunction with the mating part 18, supplies air outward through the reserved supply pipe 21. During the transmission of the transverse docking roller 3, the eccentric part 14 at its shaft end will rotate circumferentially. When its outer side contacts the movable connecting part 15, the movable connecting part 15 will drive the mating part 18 to move laterally along the interior of the built-in air storage chamber 16 via the steel wire docking rope component 20. When the activity moves to one side of the reserved through hole 17, so that the built-in air storage chamber 16 is in a closed space, the interior of the built-in air storage chamber 16 is in a closed state. At this time, the mating and docking parts 18 will supply the gas stored in the built-in air storage chamber 16 to the outside through the reserved supply pipe 21, thereby blowing away the residue formed during the equipment processing. At the same time, it will assist in the heat constant temperature treatment. The airflow formed by the reserved supply pipe 21 will dissipate and cool the temperature formed by the high pressure on the outside of the transverse docking roller 3. The slag removal pneumatic structure will effectively treat the welding slag accumulation at the extrusion structure.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A split-type high-frequency extrusion device for large-diameter square and rectangular tubes, comprising a preset base (1), wherein a vertical transmission roller (2) is mounted on the middle surface of the preset base (1) via a motor, and transverse docking rollers (3) are mounted on both sides of the preset base (1) via motors, wherein the transverse docking rollers (3) are nested and docked with the output shaft of the motor, and a hydraulic assembly is mounted on the outer side of the preset base (1); characterized in that: The output end of the hydraulic component is provided with a docking drive (4), and a split docking roller assembly (22) is mounted on the outside of the docking drive (4). A split guide locking structure is provided between the split docking roller assembly (22) and the docking drive (4). The split guide locking structure is used to assist in clamping and positioning the locking state of the split docking roller assembly (22). The split-type guide locking structure is provided with a docking fixing rod (5), and the docking fixing rod (5) is fixed on the upper end of the preset base (1). The upper inner side of the docking drive member (4) is connected to a transverse abutment member (6), and the front end of the transverse abutment member (6) corresponds to the upper end of the docking fixing rod (5). The outer side of the transverse abutment member (6) is fixedly connected to a docking nest member (7), and the inner side of the docking nest member (7) is fixedly connected to a first spring (8). The first spring (8) and the outer side of the docking drive member (4) are connected to each other, and the outer side of the docking nest member (7) corresponds to the outer side of the shaft end of the split docking roller assembly (22). The inner side of the docking nest (7) is fitted with a contact docking member (9), and the contact docking member (9) and the docking nest (7) are bonded together with a built-in reserved liquid bladder (10). The outer side of the built-in reserved liquid bladder (10) is connected with a supply hose (11), and the supply hose (11) passes through the inner side of the docking nest (7). The inner wall of the docking nest (7) is bonded with a vertical docking liquid bladder (12), and the end of the vertical docking liquid bladder (12) is connected to the supply hose (11). The lower end of the vertical docking liquid bladder (12) is connected with a locking guide member (13). The inner side of the preset base (1) is provided with a slag removal pneumatic structure, which adaptively cleans the residue generated during the transmission process of the preset base (1). The slag removal pneumatic structure is provided with a docking eccentric part (14), and the docking eccentric part (14) is installed on the outer side of the shaft end of the transverse docking roller (3). The surface of the preset base (1) is nested with a movable connector (15), and a steel wire docking rope component (20) is fixedly connected to the outer side of the movable connector (15). The steel wire docking rope component (20) passes through the interior of the preset base (1). The inner wall of the preset base (1) is provided with a built-in air storage chamber (16), and a reserved through hole (17) is provided on the inner side of the built-in air storage chamber (16). A fitting docking piece (18) is nested on the inner side of the built-in air storage chamber (16), and the fitting docking piece (18) is connected to the end of the steel wire docking rope component (20). A second spring (19) is fixedly connected to the outer side of the fitting docking piece (18), and the second spring (19) is connected to the inner side of the built-in air storage chamber (16). A reserved supply pipe (21) is provided through the inner side of the built-in air storage chamber (16).

2. The large-diameter square and rectangular tube split-type high-frequency extrusion device according to claim 1, characterized in that: The lower outer side of the transverse abutment (6) has a sloping structure, and when the docking drive (4) drives the inner nested transverse abutment (6) to move to contact the upper end of the docking fixing rod (5), the transverse abutment (6) under force slides along the inner side of the docking drive (4). At this time, the docking nest (7) docked on the outer side of the transverse abutment (6) moves laterally along the outer side of the docking drive (4) through the first spring (8). The outer side of the docking nest (7) is nested and docked with the outer side of the shaft end of the split docking roller assembly (22).

3. The large-diameter square and rectangular tube split-type high-frequency extrusion device according to claim 2, characterized in that: When the outer side of the docking nest (7) moves to be nested with the split docking roller assembly (22), the inner side of the abutting dock (9) will move laterally along the inner side of the docking nest (7), and the abutting dock (9) will simultaneously press the inner side of the built-in reserved liquid bladder (10). The built-in reserved liquid bladder (10) will supply the contents of the vertical docking liquid bladder (12) through the supply hose (11), and the vertical docking liquid bladder (12) will push the lower locking guide (13) to move towards the axis of the abutting dock (9). The locking guide (13) is provided with three points at the same angle about the center point of the abutting dock (9).

4. The large-diameter square and rectangular tube split-type high-frequency extrusion device according to claim 3, characterized in that: The docking eccentric part (14) applies pressure to the contacting movable connector (15) synchronously as the transverse docking roller (3) rotates, and the movable connector (15) drives the mating docking part (18) to move laterally along the inside of the built-in air storage chamber (16) through the steel wire docking rope component (20).

5. The large-diameter square and rectangular tube split-type high-frequency extrusion device according to claim 4, characterized in that: When the fitting and docking part (18) moves to one side of the reserved through hole (17) so that the built-in air storage chamber (16) is in a closed space, the interior of the built-in air storage chamber (16) is in a closed state, and the built-in air storage chamber (16) cooperates with the fitting and docking part (18) to supply air to the outside through the reserved supply pipe (21).

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