Pipe cutting equipment for steel structure processing

Abstract

The present application relates to cutting equipment technical field, provide a kind of pipe cutting equipment for steel structure processing, including machine tool, cutting machine installed on the top of machine tool and assembly table located in the front of cutting machine and installed on the top of machine tool, the roll clamp conveying assembly for pipe conveying positioning is also provided on the machine tool;Rotatably installed with extension bar on the assembly table, one end of the extension bar is installed with pipe correction assembly, and electrostatic elimination assembly is also provided on the extension bar;The pipe correction assembly includes: adjusting plate installed on the one end of extension bar, hydraulic rod is installed on the adjusting plate, and inner cavity pipe is installed on the telescopic end of hydraulic rod.The present application is used, by pipe correction assembly and electrostatic elimination assembly, after thin-walled steel pipe is cut, in the original clamping state of pipe, in situ complete pipe mouth cutting entry concave inner support and cutting exit convex outer pressure pipe mouth roundness correction.

Description

Technical Field

[0001] This invention relates to the field of cutting equipment technology, and more specifically, to a pipe cutting device for steel structure processing. Background Technology

[0002] In the assembly of steel structures in buildings, straight-seam welded round steel pipes are commonly used as connecting and supporting components. They are mostly thin-walled long pipes supplied according to predetermined specifications and diameters. The diameter and wall thickness of pipes of the same specification are consistent, and the surface is usually coated with galvanized or anti-rust coating. When cutting to length, the flatness of the pipe end face and the integrity of the coating near the cut directly affect the assembly accuracy and welding quality of subsequent pipe splicing.

[0003] Existing pipe cutting equipment generally includes a bed, rollers, clamping mechanism, cutting tool holder, and feeding mechanism. During cutting, the steel pipe is fed axially to the fixed length position, clamped and centered by the clamping mechanism, and then the cutting tool holder, carrying a disc blade or rotary cutter, feeds radially along the steel pipe to cut it.

[0004] However, thin-walled pipes have thin walls and limited rigidity. When the cutting blade feeds radially, the pipe wall on the inlet side is compressed inward by the feed, and at the moment the blade cuts through and the opposite side loses support, the outlet side bulges outward, forming a directional deformation of inlet concavity and outlet bulge. This deformation originates from a defined feed force process, with a definite position and direction, and tends to be consistent under the same pipe specifications and cutting parameters. Grinding can only remove the outward bulge and cannot compensate for the concavity, and it will also reduce the wall thickness and damage the galvanized layer. Transferring to an independent alignment device requires removing the pipe section for secondary clamping and alignment, which is difficult to align with the original cut, involves a lengthy process, and is prone to introducing new misalignments. Neither method can reliably eliminate the above deformation while ensuring the wall thickness and coating integrity, making it difficult to guarantee the pipe end processing quality and subsequent assembly accuracy.

[0005] Therefore, this application proposes a pipe cutting device for steel structure processing to solve the above problems. Summary of the Invention

[0006] Technical problem to be solved: In view of the problems existing in the prior art, the purpose of this invention is to provide a pipe cutting equipment for steel structure processing, which solves the problems that the directional deformation of the pipe end after cutting thin-walled steel pipe is difficult to correct in situ while ensuring the integrity of the wall thickness and coating, and the pipe end quality is difficult to meet the requirements of subsequent sleeve assembly.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a pipe cutting device for steel structure processing, including a machine tool, a cutting machine installed on the top of the machine tool, and an assembly table located in front of the cutting machine and installed on the top of the machine tool. The machine tool is also provided with a roller clamping conveying assembly for pipe conveying and positioning. An extension rod is rotatably installed on the assembly table. A pipe fitting correction assembly is installed at one end of the extension rod. An electrostatic elimination assembly is also provided on the extension rod. The pipe fitting correction assembly includes: an adjusting plate installed at one end of the extension rod. A hydraulic rod is installed on the adjusting plate. An inner cavity tube is installed at the telescopic end of the hydraulic rod. Four arc-shaped extrusion plates are evenly distributed and slidably arranged along the circumference on the outer wall of the inner cavity tube. An outer pressure sleeve is coaxially arranged outside the inner cavity tube. The arc-shaped extrusion plates 64 are configured to extend radially relative to the inner cavity tube 63 to abut against the inner wall of the pipe. The outer pressure sleeve 65 is coaxially sleeved outside the inner cavity tube 63 and configured to move axially and radially press the outer wall of the pipe with its inner conical surface.

[0008] Furthermore, the inner cavity tube is provided with a synchronous driving assembly, which includes a spring compression sleeve and a conical compression head; the spring compression sleeve is axially sealed and slidably disposed in the inner cavity tube, and multiple connecting plates are equidistantly annularly installed on the outer wall of the spring compression sleeve; multiple sliding grooves are equidistantly annularly opened on the outer wall of the inner cavity tube, and the connecting plates slide in the sliding grooves and are fixedly connected to the outer pressure sleeve sleeved outside the inner cavity tube; a pneumatic cavity is formed between the right end of the spring compression sleeve and the end wall of the inner cavity tube, and an air injection port communicating with the pneumatic cavity is provided on the top wall of the inner cavity tube; a conical compression head is installed on the left end of the spring compression sleeve, and when the conical compression head moves axially with the spring compression sleeve, its conical surface abuts against the arc-shaped compression plate and pushes the arc-shaped compression plate to extend radially.

[0009] Furthermore, the static elimination assembly includes: an outer sleeve, fixedly mounted on an extension rod; two adapter plates, symmetrically mounted on the left and right sides of the outer wall of the outer sleeve; two open frame boxes, respectively mounted on the inner side of the adapter plates; an exhaust port, mounted at the bottom of the open frame box and connected to an external exhaust source via a pipeline; and an ion gas port, mounted at the upper front end of the open frame box and connected to an external ion generator via a pipeline.

[0010] Furthermore, the open frame box is provided with an ion airflow diversion component, which includes an airflow release plate, an inclined guide plate, and a pressure vent plate; the airflow release plate is installed on the front inner wall of the open frame box, and multiple inclined guide plates are installed at equal intervals at the rear end of the airflow release plate, and a pressure vent plate is installed at the rear end of the inclined guide plate; the ion air inlet is connected to the airflow pipe of the airflow release plate.

[0011] Furthermore, the rear end plate of the open frame box is provided with a contact scraping end, which abuts against the surface of the cutting blade of the cutting machine; the width of the front end plate of the open frame box is smaller than the width of the rear end plate.

[0012] Furthermore, the inner wall of the external pressure sleeve is a tapered surface extending axially, and the diameter of the tapered surface gradually increases along the direction of the external pressure sleeve toward the pipe opening; when the external pressure sleeve moves forward with the spring compression sleeve, the tapered surface slides against the outer wall of the pipe, converting the axial displacement of the external pressure sleeve into radially inward external pressure to flatten the convex protrusion of the cut outlet.

[0013] Furthermore, the roller clamp conveying assembly includes: a positioning frame, mounted on the top of the machine tool; a pressing roller frame, rotatably mounted on the top of the positioning frame, on which a pressing roller is provided; a support roller table, located below the positioning frame and mounted on the top of the machine tool; and a single guide table, mounted on the upper side of one side of the machine tool, on which multiple single sets of guide rollers are provided for guiding the input of the pipe.

[0014] Furthermore, a drive motor is installed on one side of the assembly table, and the output end of the drive motor is fixedly connected to the other end of the extension rod to drive the extension rod to rotate around its own axis.

[0015] Beneficial effects: Compared with the prior art, the advantages of the present invention are: 1. By integrating the pipe fitting correction component and the static elimination component on the extension rod, the present application completes the correction of the concave inlet and convex outlet of the pipe opening and the cleaning of the blade surface in the original position of the cutting station after the cutting is completed. This solves the problems of the inlet being concave inward and the outlet being convex outward after the cutting of thin-walled steel pipes, as well as the difficulty in alignment and the complexity of the process when using independent correction equipment for secondary clamping.

[0016] 2. By setting up a synchronous drive assembly, a single air pressure chamber drives the spring extrusion sleeve to move axially, which in turn drives the conical extrusion head to push the arc-shaped extrusion plate to extend radially to achieve internal support, and the connecting plate drives the outer pressure sleeve to move axially to achieve external pressure. The internal support and external pressure are rigidly linked by the mechanical structure, eliminating the need to set up separate independent drive sources, simplifying the structure and avoiding the risk of secondary deformation of the pipe opening due to asynchronous actions.

[0017] 3. To address the issue of needing radial external pressure but having limited external space for the pipe and being unable to directly install a radial drive device, the inner wall of the external pressure sleeve is designed as a tapered surface with a gradually increasing diameter along the direction towards the pipe opening. When the external pressure sleeve moves axially, the tapered surface slides into contact with the outer wall of the pipe, converting the axial displacement into radially inward external pressure. No additional radial drive device is required, resulting in a compact structure. Furthermore, the external pressure increases with the forward movement, and the external pressure can be adjusted by controlling the forward movement to avoid excessive pressure damaging the thin-walled pipe.

[0018] 4. To address the issues of uneven airflow distribution, easy upward splashing of debris, and insufficient static electricity reduction due to short contact time between ion gas and the blade and debris when directly blowing ion gas, an ion gas flow diversion component is installed. The airflow release plate releases the ion gas in separate streams, which are then divided into upper and lower airflows by an inclined guide plate. The upper airflow covers the blade surface to reduce static electricity, while the lower airflow presses down on the debris splashing through the pressure vent plate and acts on the debris to reduce static electricity. This prolongs the contact time between the ion gas and the blade and debris, improves the static electricity reduction effect, and reduces upward splashing of debris. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a three-dimensional structural diagram of the present invention from another perspective.

[0021] Figure 3 This is a schematic diagram of the front view of the present invention.

[0022] Figure 4 This is a schematic diagram of the initial state of the pipe fitting correction assembly and the static electricity elimination assembly of the present invention.

[0023] Figure 5 This is a schematic diagram of the mounting position structure of the assembly table of the present invention.

[0024] Figure 6 This is a schematic diagram of the pipe fitting correction assembly of the present invention.

[0025] Figure 7 This is a schematic diagram of the internal structure of the inner cavity tube of the present invention.

[0026] Figure 8 This is a schematic diagram of the adapter plate structure of the present invention.

[0027] Figure 9 This is a schematic diagram of the ion gas flow splitter component of the present invention.

[0028] Figure 10 This is a schematic diagram showing the contact state between the contact scraping surface end of the present invention and the cutting machine blade.

[0029] The attached diagram is labeled as follows: 1. Machine tool; 2. Cutting machine; 3. Assembly table; 31. Drive motor; 4. Roller clamp conveyor assembly; 41. Positioning frame; 42. Pressing roller frame; 43. Support roller table; 44. Single guide table; 5. Extension rod; 6. Pipe fitting alignment assembly; 61. Adjusting plate; 62. Hydraulic rod; 63. Inner tube; 631. Slide groove; 64. Arc-shaped extrusion plate; 65. External pressure sleeve; 7. Static eliminator assembly; 71. Outer sleeve; 72. Adapter plate; 73. Open frame box; 731. Contact scraping end; 74. Extraction port; 75. Ionization port; 8. Synchronous drive assembly; 81. Spring compression sleeve; 811. Connecting plate; 82. Conical extrusion head; 83. Pneumatic chamber; 9. Ion airflow diversion assembly; 91. Airflow release plate; 92. Inclined guide plate; 93. Pressed breathable plate. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] This application provides a pipe cutting device for steel structure processing, which solves the problem that the directional deformation of thin-walled steel pipes after cutting, such as the concave inlet and convex outlet, is difficult to correct in situ while ensuring the integrity of the wall thickness and coating, and the quality of the pipe end is difficult to meet the requirements of subsequent sleeve assembly. In use, through the pipe fitting correction component and the static electricity elimination component, the pipe end is rounded and corrected in situ after cutting, while the pipe is kept in its original clamping state, by supporting the concave inlet and pressing the convex outlet. At the same time, the surface of the blade is cleaned of the adhering substances and static electricity.

[0032] The technical solutions in this application are intended to solve the above-mentioned technical problems, and the overall approach is as follows.

[0033] Example 1, please refer to Figures 1-10 This application provides a steel structure processing pipe cutting equipment, including a machine tool 1, a cutting machine 2 mounted on the top of the machine tool 1, and an assembly table 3 located in front of the cutting machine 2 and mounted on the top of the machine tool 1. The machine tool 1 is also provided with a roller clamp conveying assembly 4 for pipe conveying and positioning. An extension rod 5 is rotatably mounted on the assembly table 3, and a pipe fitting correction assembly 6 is mounted on one end of the extension rod 5. An electrostatic elimination assembly 7 is also provided on the extension rod 5. The pipe fitting correction assembly 6 includes: mounted on one end of the extension rod 5. An adjusting plate 61 is provided, on which a hydraulic rod 62 is installed. An inner cavity tube 63 is installed at the telescopic end of the hydraulic rod 62. Four arc-shaped extrusion plates 64 are evenly distributed and slidably arranged along the circumference on the outer circular wall of the inner cavity tube 63. An outer pressure sleeve 65 is coaxially arranged outside the inner cavity tube 63. The arc-shaped extrusion plates 64 are configured to extend radially relative to the inner cavity tube 63 to support the inner wall of the tube. The outer pressure sleeve 65 is coaxially sleeved outside the inner cavity tube 63 and is configured to move axially and radially press the outer wall of the tube with its inner conical surface.

[0034] Specifically, this equipment is used to solve the problems of directional deformation of thin-walled steel pipes after cutting, such as indentation at the cut entrance and convexity at the cut exit, as well as the difficulty in alignment and complexity of the process when using independent correction equipment for secondary clamping. During operation, the pipe is positioned to the cutting station by the roller clamp conveying assembly 4, and the cutting machine 2 completes the cutting. Then, the extension rod 5 drives the pipe correction assembly 6 to align with the pipe opening, the hydraulic rod 62 extends to allow the inner tube 63 to enter the pipe opening, the arc-shaped extrusion plate 64 extends radially to support the indented part, and the outer pressure sleeve 65 presses the convex part to complete the directional deformation correction of the pipe opening. After the correction is completed, the inner tube 63 exits the pipe opening, the extension rod 5 rotates to the avoidance position, the roller clamp conveying assembly 4 is released, and the corrected pipe section is taken out.

[0035] Further, please refer to Figure 2 The roller clamp conveying assembly 4 includes: a positioning frame 41, mounted on the top of the machine tool 1; a pressing roller frame 42, rotatably mounted on the top of the positioning frame 41, on which a pressing roller is provided; a support roller table 43, located below the positioning frame 41 and mounted on the top of the machine tool 1; and a single guide table 44, mounted on the upper side of one side of the machine tool 1, on which multiple single sets of guide rollers are provided for guiding the pipe input.

[0036] Specifically, the roller clamp conveyor assembly 4 is used to solve the problems of easy deviation of pipe input, unstable clamping during cutting, and insufficient positioning accuracy. During feeding, the pipe is input and guided by the guide roller of the single guide table 44 to limit lateral displacement. Supported by the support roller table 43, the positioning frame 41 performs axial positioning to align the position to be cut with the cutting station. The pressing roller frame 42 rotates downward, and its pressing roller and the support roller table 43 clamp the pipe from top to bottom to complete stable clamping. Then the cutting machine 2 performs cutting. Thus, the single guide table 44, the support roller table 43, the positioning frame 41 and the pressing roller frame 42 cooperate to achieve stable clamping and positioning of the pipe.

[0037] Furthermore, please refer to Figure 5 A drive motor 31 is installed on one side of the assembly table 3. The output end of the drive motor 31 is fixedly connected to the other end of the extension rod 5 to drive the extension rod 5 to rotate around its own axis.

[0038] Specifically, the drive motor 31 is used to solve the problems of inconvenient switching and inaccurate positioning between the static elimination component 7 and the pipe fitting correction component 6. On the extension rod 5, the two components are arranged at different angles along the circumference; During cutting, the drive motor 31 drives the extension rod 5 to rotate, so that both components can avoid each other; after cutting, the drive motor 31 drives the extension rod 5 to rotate, so that the static elimination component 7 is aligned with the blade position to clean the chips, and the pipe fitting correction component 6 is aligned with the pipe opening to correct it; thus, the drive motor 31 automatically switches the positions of the two components to realize the connection between the cutting and chip cleaning and correction processes.

[0039] Specifically, the operating procedure of the steel structure processing pipe cutting equipment is as follows: First, the thin-walled galvanized steel pipe to be cut is guided by a single set of guide rollers on the single guide table 44 and fed into the machine tool 1 along the axis. After the steel pipe reaches the support roller table 43, it is supported by the support roller table 43. The positioning frame 41 positions the axial position of the pipe so that the position to be cut is aligned with the cutting position of the cutting machine 2. Then, the pressing roller frame 42 rotates and presses down around the hinge point between it and the top of the positioning frame 41. The pressing roller on the pressing roller frame 42 presses the top of the pipe and cooperates with the support roller table 43 below to clamp the pipe. Second, the drive motor 31 on one side of the assembly table 3 drives the extension rod 5 to rotate around its own axis, so that the static elimination component 7 and the pipe fitting correction component 6 installed on the extension rod 5 are synchronously rotated to the avoidance position; then the cutting machine 2 carries the cutting blade and feeds it radially along the pipe, and performs dry rotary feeding on the pipe until the blade cuts through the pipe wall and cuts the steel pipe. During the cutting process, the thin-walled tube will indent inward on the side where the blade enters due to the feed force, and bulge outward on the side that cuts through due to the loss of support, resulting in directional deformation of the tube opening; at the same time, the galvanized layer softens under the high temperature of cutting and mixes with the chips and adheres to the blade surface; the above problems will not be dealt with during the cutting stage, but will be solved step by step after the cutting is completed. Third, after the cutting is completed, the blade rotates out of the cutting feed and stays in the chip removal position. The roller clamp conveyor assembly 4 keeps the pipe clamped. The drive motor 31 drives the extension rod 5 to rotate, so that the static elimination assembly 7 is aligned with the blade position and the pipe fitting correction assembly 6 is aligned with the pipe opening. The two work in parallel. Among them, the static elimination component 7 is fixedly mounted on the extension rod 5 through the outer sleeve 71, the adapter plate 72 is symmetrically arranged on the left and right sides of the outer wall of the outer sleeve 71, and the open frame box 73 is fixed on the inner side of the adapter plate 72 so that the two open frame boxes 73 cover the outside of the two sides of the blade. After the static eliminator component 7 is activated, it operates in the following three ways in tandem: First path: The contact scraping end 731 of the rear end plate edge of the open frame box 73 contacts the surface of the cutting blade. During the low-speed rotation of the cutting blade itself, the contact scraping end 731 scrapes off the accumulated material adhering to the blade surface. The second path: Ionized gas generated by the external ion generator is transported to the ionized gas inlet 75 through a pipeline. The ionized gas inlet 75 is connected to the airflow pipeline of the airflow release plate 91. After entering the airflow release plate 91, the ionized gas is released in streams through the multi-chamber structure. After being guided by the inclined guide plate 92, it is divided into an upper airflow and a lower airflow. The upper airflow forms a cover above the blade and acts on the blade surface to reduce the static electricity carried by the blade. The lower airflow flows through the pressing and permeable plate 93 and acts downward. When it scrapes off the accumulated material at the contact scraping end 731, the crushed debris is pressed and splashed upward. At the same time, the ionized gas acts on the debris through the pressing and permeable plate 93 to reduce the static electricity carried by the debris. The third route: The air extraction port 74 at the bottom of the open frame box 73 is connected to an external air extraction source through a pipeline, forming a negative pressure inside the open frame box 73 to remove the scraped debris and reduce the possibility of debris falling to the cross-section of the pipe opening. Fourth, simultaneously, after the aforementioned extension rod 5 rotates, the pipe fitting correction assembly 6 also aligns with the cut pipe opening (at this time, the inner tube 63 is coaxial with the pipe, and their central axes coincide; this coaxial relationship is ensured by the assembly position of the assembly table 3 and the roller clamp conveying assembly 4); the pipe fitting correction assembly 6 is fixedly installed on the end of the extension rod 5 via the adjusting plate 61, and the hydraulic rod 62 is fixed on the adjusting plate 61. The hydraulic rod 62 extends out, pushing the inner tube 63 connected to its telescopic end to extend axially into the pipe opening until the arc-shaped extrusion plate 64 and the outer pressure sleeve 65 on the inner tube 63 reach the pipe opening deformation area; Once the inner tube 63 is fully inserted, compressed air is injected into the pneumatic chamber 83 through the air injection port on the top wall of the inner tube 63. The pneumatic chamber 83 is formed between the right end of the spring compression sleeve 81 and the end wall of the inner tube 63. After the air pressure increases, it pushes the spring compression sleeve 81 to slide axially to the left (towards the tube opening) along the inner wall of the inner tube 63. While the spring compression sleeve 81 moves to the left, the following two actions are driven simultaneously by the synchronous drive assembly 8: Action 1, internal support for the recessed inlet: The conical extrusion head 82 installed at the left end of the spring extrusion sleeve 81 moves to the left synchronously with the spring extrusion sleeve 81. The conical surface of the conical extrusion head 82 contacts the multiple arc-shaped extrusion plates 64 that are circumferentially slidably arranged on the outer wall of the inner tube 63, converting the axial displacement into radial thrust, pushing each arc-shaped extrusion plate 64 to extend outward radially, pressing against the inner wall of the tube, and internally supporting the recessed inlet. In the second action, multiple connecting plates 811, equidistantly annularly installed on the outer wall of the spring compression sleeve 81, move synchronously to the left along with the spring compression sleeve 81. The connecting plates 811 slide within corresponding grooves 631 on the outer wall of the inner tube 63 and are fixedly connected to the outer pressure sleeve 65 sleeved outside the inner tube 63. Therefore, the connecting plates 811 drive the outer pressure sleeve 65 to move synchronously to the left. The inner wall of the outer pressure sleeve 65 is a tapered surface extending axially. The diameter of this tapered surface gradually increases along the direction of the outer pressure sleeve 65 toward the pipe opening. When the outer pressure sleeve 65 moves forward to the left, the tapered surface slides into contact with the outer wall of the pipe. As the forward movement increases, the diameter at the contact position gradually decreases, converting the axial displacement into radially inward external pressure, applying external pressure to the outwardly convex cut-out portion. The inner support and the outer pressure are driven by the same air pressure chamber 83 and the same spring compression sleeve 81, and are synchronized through mechanical linkage. While the inlet is pushed outward, the outlet is squeezed inward. During the correction process, the air pressure is maintained at the set value, and the correction is completed after the pressure is held for a certain period of time. It should be noted that the pipe fitting alignment assembly 6 and the static electricity elimination assembly 7 are arranged at intervals along the circumference of the extension rod 5; the drive motor 31 can position the extension rod 5 to the cutting avoidance position, the chip removal position and the alignment position respectively; Meanwhile, the above also explains that during cutting, the drive motor 31 drives the extension rod 5 to rotate, so that both the pipe fitting alignment component 6 and the static elimination component 7 are rotated to the clearance position; after cutting, the extension rod 5 rotates to the working angle, so that the static elimination component 7 is aligned with the blade and the pipe fitting alignment component 6 is aligned with the pipe opening, and the two work in parallel. After calibration, the air pressure chamber 83 is depressurized, the spring compression sleeve 81 retracts and resets, the conical compression head 82 retracts accordingly, and the arc-shaped compression plate 64 also retracts radially under the action of the reset spring connected to the inner wall of the inner cavity tube 63 (see reference). Figure 7 The connecting plate 811 moves the outer pressure sleeve 65 backward, causing the conical surface to detach from the outer wall of the pipe, thus releasing the external pressure. Subsequently, the hydraulic rod 62 retracts, causing the inner tube 63 to exit from the pipe opening. The drive motor 31 drives the extension rod 5 to rotate, causing both the static elimination component 7 and the pipe fitting correction component 6 to move to the clearance position. Finally, the pressing roller frame 42 rotates upward to release, and the cut and corrected pipe section is output by the support roller table 43, allowing the equipment to enter the next working cycle. It should be noted that the arc-shaped extrusion plate 64 is composed of an extrusion member and an arc-shaped plate. The extrusion member slides inside the inner tube 63 and is extruded outward by the conical extrusion head 82. The return spring on it connects the extrusion member with the inner wall of the inner tube 63, which can make the extrusion member return to its original position. The arc-shaped plate is the main structure that supports the inner wall of the tube.

[0040] Please see Figure 6 and Figure 7 The inner tube 63 is equipped with a synchronous driving assembly 8, which includes a spring compression sleeve 81 and a conical compression head 82. The spring compression sleeve 81 is axially sealed and slidably disposed in the inner tube 63. Multiple connecting plates 811 are equidistantly annularly installed on the outer wall of the spring compression sleeve 81. Multiple sliding grooves 631 are equidistantly annularly opened on the outer wall of the inner tube 63. The connecting plates 811 slide in the sliding grooves 631 and are fixedly connected to the outer pressure sleeve 65 sleeved outside the inner tube 63. A pneumatic chamber 83 is formed between the right end of the spring compression sleeve 81 and the end wall of the inner tube 63. An air injection port communicating with the pneumatic chamber 83 is provided on the top wall of the inner tube 63. A conical compression head 82 is installed on the left end of the spring compression sleeve 81. When the conical compression head 82 moves axially with the spring compression sleeve 81, its conical surface abuts against the arc-shaped compression plate 64 and pushes the arc-shaped compression plate 64 to extend radially.

[0041] Specifically, the synchronous drive assembly 8 is used to solve the problem that the inner support and the external pressure need to be driven separately and the actions are difficult to synchronize. After compressed air is injected into the air pressure chamber 83 through the air injection port, the pressure inside the air pressure chamber 83 increases, pushing the spring extrusion sleeve 81 to move axially along the inner cavity tube 63. When the spring extrusion sleeve 81 moves, the conical extrusion head 82 moves forward accordingly, and its conical surface abuts against the arc-shaped extrusion plate 64 and pushes the arc-shaped extrusion plate 64 to extend radially, thus realizing the inner support. At the same time, the connecting plate 811 moves along the slide groove 631, driving the external pressure sleeve 65 to move axially. The inner wall of the external pressure sleeve 65 is a conical surface that extends axially, and the diameter of the conical surface gradually increases in the direction towards the pipe opening. When the external pressure sleeve 65 moves axially, the conical surface slides in contact with the outer wall of the pipe. As the amount of movement increases, the diameter of the contact position gradually decreases, converting the axial displacement into radially inward external pressure, thus realizing the external pressure. Secondly, after depressurization, the spring compression sleeve 81 retracts under its own spring rebound, the arc-shaped compression plate 64 retracts, and the outer pressure sleeve 65 is released. It should also be noted that the outer circumference of the spring compression sleeve 81 is sealed with the inner wall of the inner cavity tube 63, so that the air pressure chamber 83 is sealed and pressurized. Moreover, the tail of the spring compression sleeve 81 will not exceed the tail opening of the slide groove 631 when it slides to the limit position, so there will be no air pressure leakage problem. Therefore, the inner support and the outer pressure are driven by the same air pressure chamber 83 and the same spring compression sleeve 81, and the actions are completed synchronously. There is no need to set up separate drive sources for the inner support and the outer pressure, which simplifies the structure and reduces the risk of secondary deformation of the pipe opening due to asynchronous actions.

[0042] Further, please refer to Figure 7 The inner wall of the external pressure sleeve 65 is a tapered surface extending axially. The diameter of the tapered surface gradually increases along the direction of the external pressure sleeve 65 toward the pipe opening. When the external pressure sleeve 65 moves forward with the spring compression sleeve 81, the tapered surface slides against the outer wall of the pipe, converting the axial displacement of the external pressure sleeve 65 into radially inward external pressure to flatten the convex protrusion of the cut outlet.

[0043] Specifically, the tapered surface of the inner wall of the external pressure sleeve 65 is used to solve the problem that the external space of the pipe is limited and the radial drive device cannot be directly arranged to provide external pressure. When the external pressure sleeve 65 moves axially toward the pipe opening along with the spring compression sleeve 81, its inner tapered surface first fits into the pipe with the front end with a larger diameter. As the forward movement increases, the contact position between the tapered surface and the outer wall of the pipe gradually moves toward the rear end with a smaller diameter. The diameter of the contact position gradually decreases, and the radial inward pressure applied by the tapered surface to the outer wall of the pipe gradually increases. This converts the axial displacement of the external pressure sleeve 65 into radial inward external pressure, and applies external pressure to the outwardly convex part of the cut-out. Therefore, the axial thrust is converted into radial external pressure through the conical surface, eliminating the need for an additional radial drive device on the outside of the pipe. The structure is compact, and the external pressure increases with the forward movement of the external pressure sleeve 65. The external pressure can be adjusted by controlling the forward movement.

[0044] Please see Figure 8 and Figure 9 The static elimination component 7 includes: an outer sleeve 71, fixedly installed on the extension rod 5; two adapter plates 72, symmetrically installed on the left and right sides of the outer wall of the outer sleeve 71; two open frame boxes 73, respectively installed on the inner side of the adapter plate 72; an exhaust port 74, installed at the bottom of the open frame box 73 and connected to an external exhaust source through a pipeline; and an ion gas port 75, installed at the upper front end of the open frame box 73 and connected to an external ion generator through a pipeline.

[0045] Specifically, by setting up an outer sleeve 71, an adapter plate 72, an open frame box 73, an air extraction port 74, and an ion gas port 75, the problems of material adhering to the blade surface after cutting, debris splashing, and debris being re-adsorbed onto the blade or pipe section due to static electricity are solved. After cutting, the extension rod 5 rotates to cover the outside of the open frame box 73. The contact scraping end 731 of the rear plate edge of the open frame box 73 contacts the surface of the blade. When the blade rotates at low speed, it scrapes off the deposits adhering to the surface. At the same time, the ion gas port 75 introduces ion gas into the open frame box 73. The ion gas contacts the surface of the blade and the scraped debris, reducing its static electricity. The suction port 74 creates a negative pressure inside the open frame box 73, which removes the scraped debris that has had its static electricity reduced. As a result, while the deposits on the blade surface are scraped off, the ionized gas reduces the static electricity on the blade and the debris. The exhaust port 74 promptly removes the debris, reducing the possibility of debris being re-adsorbed onto the blade or the cross-section of the port due to static electricity, and also preventing debris from splashing and scattering.

[0046] Further, please refer to Figure 10 The rear end plate of the open frame box 73 is provided with a contact scraping end 731, which abuts against the surface of the cutting blade of the cutting machine 2; the width of the front end plate of the open frame box 73 is smaller than the width of the rear end plate.

[0047] Specifically, the contact scraping end 731 is used to solve the problem of difficult-to-remove galvanized iron filings adhering to the blade surface. After cutting, the open frame box 73 is placed over the outside of the blade, and the contact scraping end 731 abuts against the blade surface. When the blade rotates at low speed, the contact scraping end 731 scrapes off the deposits adhering to the blade surface. At the same time, the width of the front plate of the open frame box 73 is smaller than the width of the rear plate, and there is a gap between the front plate and the blade surface, so it does not contact the blade. Only the contact scraping end 731 at the edge of the rear plate abuts against the blade surface to scrape off the deposits.

[0048] Please see Figure 9 An ion airflow diversion component 9 is provided inside the open frame box 73. The ion airflow diversion component 9 includes an airflow release plate 91, an inclined guide plate 92, and a pressure breathable plate 93. The airflow release plate 91 is installed on the inner wall of the front end of the open frame box 73. Multiple inclined guide plates 92 are installed at equal intervals at the rear end of the airflow release plate 91. The pressure breathable plate 93 is installed at the rear end of the inclined guide plate 92. The ion air port 75 is connected to the airflow pipe of the airflow release plate 91.

[0049] Specifically, the ion gas flow splitter 9 is used to solve the problems of uneven airflow distribution, easy upward splashing of debris, and insufficient static electricity reduction due to short contact time between ion gas and blade and debris when ion gas is directly blown; The ionized gas input through the ionization port 75 enters the airflow release plate 91 and is then released into multiple streams of ionized gas through the multi-chamber structure of the airflow release plate 91. When the multiple streams of ionized gas flow backward through the inclined guide plate 92, they are guided and split to form an upper airflow and a lower airflow: the upper airflow forms a cover above the blade and acts on the blade surface to reduce the static electricity carried by the blade; the lower airflow flows downward after passing through the pressing and permeable plate 93 and acts downward. When it scrapes off the accumulated material at the contact scraping end 731, it presses the debris to fly upward. At the same time, the ionized gas passes through the pressing and permeable plate 93 and acts on the debris to reduce the static electricity carried by the debris. Therefore, after being split and diverted, the ionized gas acts on the blade and the debris respectively, covering the blade above and pressing down the debris below. This not only prolongs the contact time between the ionized gas and the blade and debris, improving the static electricity reduction effect, but also reduces the possibility of debris splashing upwards.

[0050] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pipe cutting device for steel structure processing, comprising a machine tool (1), a cutting machine (2) mounted on top of the machine tool (1), and an assembly table (3) located in front of the cutting machine (2) and mounted on top of the machine tool (1), wherein the machine tool (1) is further provided with a roller clamping conveying assembly (4) for pipe conveying and positioning; characterized in that: An extension rod (5) is rotatably mounted on the assembly table (3). A pipe fitting correction assembly (6) is mounted on one end of the extension rod (5). An electrostatic elimination assembly (7) is also provided on the extension rod (5). The pipe fitting alignment assembly (6) includes: An adjusting plate (61) is installed at one end of the extension rod (5). A hydraulic rod (62) is installed on the adjusting plate (61). An inner tube (63) is installed at the telescopic end of the hydraulic rod (62). Four arc-shaped extrusion plates (64) are evenly distributed and slidably arranged along the circumference on the outer wall of the inner tube (63). An outer pressure sleeve (65) is coaxially arranged outside the inner tube (63). The arc-shaped extrusion plate (64) is configured to extend radially relative to the inner cavity tube (63) to abut against the inner wall of the tube; the outer pressure sleeve (65) is coaxially sleeved outside the inner cavity tube (63) and is configured to move axially and radially press the outer wall of the tube with its inner conical surface.

2. The pipe cutting equipment for steel structure processing as described in claim 1, characterized in that, The inner tube (63) is provided with a synchronous driving assembly (8), which includes a spring compression sleeve (81) and a conical compression head (82). The spring compression sleeve (81) is axially sealed and slidably disposed in the inner cavity tube (63), and multiple connecting plates (811) are equidistantly annularly installed on the outer wall of the spring compression sleeve (81). The inner tube (63) has multiple circumferential grooves (631) equidistantly arranged on its outer wall. The connecting plate (811) slides in the grooves (631) and is fixedly connected to the outer pressure sleeve (65) sleeved outside the inner tube (63). A pneumatic chamber (83) is formed between the right end of the spring compression sleeve (81) and the end wall of the inner tube (63), and an air injection port communicating with the pneumatic chamber (83) is provided on the top wall of the inner tube (63). The left end of the spring compression sleeve (81) is equipped with a conical compression head (82). When the conical compression head (82) moves axially with the spring compression sleeve (81), its conical surface abuts against the arc-shaped compression plate (64) and pushes the arc-shaped compression plate (64) to extend radially.

3. The pipe cutting equipment for steel structure processing as described in claim 1, characterized in that, The static elimination component (7) includes: The outer sleeve (71) is fixedly installed on the extension rod (5); There are two adapter plates (72), which are symmetrically installed on the left and right sides of the outer wall of the outer sleeve (71); Two open frame boxes (73) are provided, which are respectively installed on the inner side of the adapter plate (72); The air extraction port (74) is installed at the bottom of the open frame box (73) and is connected to an external air extraction source through a pipeline; The ion gas inlet (75) is installed at the upper front end of the open frame box (73) and is connected to an external ion generator through a pipeline.

4. The pipe cutting equipment for steel structure processing as described in claim 3, characterized in that, The open frame box (73) is provided with an ion airflow diversion component (9), which includes an airflow release plate (91), an inclined guide plate (92), and a pressure breathable plate (93). The airflow release plate (91) is installed on the front inner wall of the open frame box (73). Multiple inclined guide plates (92) are installed at equal intervals at the rear end of the airflow release plate (91). A pressurized air-permeable plate (93) is installed at the rear end of the inclined guide plate (92). The ion gas inlet (75) is connected to the gas flow pipeline of the gas flow release plate (91).

5. The pipe cutting equipment for steel structure processing as described in claim 4, characterized in that, The rear end plate of the open frame box (73) is provided with a contact scraping end (731), which abuts against the surface of the cutting blade of the cutting machine (2). The width of the front panel of the open frame box (73) is smaller than the width of the rear panel.

6. The pipe cutting equipment for steel structure processing as described in claim 2, characterized in that, The inner wall of the external pressure sleeve (65) is a tapered surface extending along the axial direction, and the diameter of the tapered surface gradually increases along the direction of the external pressure sleeve (65) toward the pipe opening. When the external pressure sleeve (65) moves forward with the spring compression sleeve (81), the conical surface slides against the outer wall of the pipe, converting the axial displacement of the external pressure sleeve (65) into radially inward external pressure to flatten the convex protrusion of the cut outlet.

7. The pipe cutting equipment for steel structure processing as described in claim 1, characterized in that, The roller clamp conveying assembly (4) includes: The positioning frame (41) is installed on the top of the machine tool (1); A pressing roller frame (42) is rotatably mounted on the top of a positioning frame (41), and a pressing roller is provided thereon; The support roller table (43) is located below the positioning frame (41) and installed on the top of the machine tool (1); A single guide table (44) is installed on the upper side of the machine tool (1), and multiple single sets of guide rollers are provided on it for guiding the input of pipes.

8. The pipe cutting equipment for steel structure processing as described in claim 1, characterized in that, A drive motor (31) is installed on one side of the assembly table (3). The output end of the drive motor (31) is fixedly connected to the other end of the extension rod (5) to drive the extension rod (5) to rotate around its own axis.

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