A kind of plasma through-line cutting machine and prefabricated frozen station part machining method

Abstract

The application relates to the technical field of intersecting line cutting machines, and discloses a plasma intersecting line cutting machine and a machining method of a prefabricated frozen station part. When a circular pipe is positioned on the plasma intersecting line cutting machine each time, the self gravity of the circular pipe triggers the operation of a cleaning mechanism, the cleaning mechanism controls a scraper to abut against a rack, the scraper is moved along with a cutting torch rotary assembly, the scraper synchronously scrapes and cleans the welding slag and waste on the rack, so that a large amount of waste and welding slag existing on the rack after the plasma intersecting line cutting machine is operated for a long time is avoided, the waste and the welding slag are prevented from blocking the rack, equipment operation shaking and abnormal sound caused by the waste and the welding slag are prevented, the stability of equipment operation is improved, the machining quality of the plasma intersecting line cutting machine is improved, and the use efficiency of the equipment is improved.

Description

Technical Field

[0001] This invention relates to the field of intersecting line cutting machine technology, specifically to a plasma intersecting line cutting machine and a processing method for prefabricated refrigeration station parts. Background Technology

[0002] An intersecting line cutting machine is a device that automatically cuts the intersecting ends, intersecting holes, and pipe bends (joints) of metal round pipes, square pipes, or irregularly shaped pipes. In machining processes, it is common to encounter situations where pipes intersect and are welded at a certain angle. To ensure welding quality and a neat weld, it is necessary to cut two or more intersecting lines. Currently, common methods for pipe intersecting line cutting include manual cutting, semi-automatic cutting machine cutting, and intersecting line cutting machine cutting. Compared to manual and semi-automatic cutting methods, CNC intersecting line cutting can effectively improve the efficiency and quality of plate cutting, and reduce the operator's workload. Currently, the intersecting line cutting machine is also the most commonly used equipment.

[0003] However, the following problems still exist: after running the intersecting line cutting machine for a long time, a large amount of waste or welding slag will accumulate on the guide rail and rack, causing the equipment to vibrate and make abnormal noises. The cut workpieces will have size errors. Since the equipment often needs to run for a long time, stopping the machine for maintenance and cleaning manually will reduce the efficiency of the equipment. Therefore, the intersecting line cutting machine is not very suitable for cleaning waste or welding slag. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a plasma intersecting line cutting machine and a processing method for prefabricated refrigeration station parts. This method avoids the accumulation of large amounts of waste and welding slag on the rack of the plasma intersecting line cutting machine after prolonged operation, preventing equipment vibration and abnormal noise caused by waste and welding slag clogging the rack. It improves the stability of equipment operation, indirectly enhancing the processing quality and efficiency of the plasma intersecting line cutting machine. This invention solves the problem that after prolonged operation of the intersecting line cutting machine, a large amount of waste or welding slag accumulates on the guide rails and rack, causing equipment vibration, abnormal noise, and dimensional errors in the cut workpieces. Since the equipment often requires long-term operation, manual cleaning during maintenance reduces equipment efficiency. Furthermore, the invention addresses the issue of the low applicability of the intersecting line cutting machine in cleaning waste or welding slag.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a plasma intersecting line cutting machine, comprising a base frame, a cutting mechanism disposed on the base frame, and a cleaning mechanism disposed on the cutting mechanism. The cutting mechanism utilizes the interaction between a rack and a gear to drive a cutting torch rotation assembly to move on the base frame. The cutting torch rotation assembly is used for performing plasma intersecting line cutting. The cleaning mechanism is located next to the cutting torch rotation assembly. The cleaning mechanism uses scrapers to clean the rack. The scrapers are symmetrically arranged on both sides of the cutting torch rotation assembly and are adjacent to the rack.

[0006] Preferably, the cutting mechanism includes a three-jaw chuck assembly, which is rotatably mounted on one side of the base frame. The three-jaw chuck assembly is used to clamp a round tube. A first slide rail is fixedly installed on the base frame. The first slide rail is adjacent to the three-jaw chuck assembly. The trajectory of the first slide rail is the same as the direction in which the three-jaw chuck assembly clamps the round tube. The overall length of the first slide rail and the three-jaw chuck assembly is adapted to the length of the base frame.

[0007] Preferably, a roller bracket is slidably fitted on the first slide rail, and a locking handwheel is provided on the roller bracket. The locking handwheel passes through the roller bracket and is threadedly fitted with the roller bracket. The locking handwheel is located above the first slide rail, and after the locking handwheel is rotated to abut against the first slide rail, the roller bracket is fixed on the first slide rail.

[0008] Preferably, a plurality of lower support rollers are movably disposed within the roller frame, the lower support rollers being symmetrically distributed within the roller frame and rolling linearly within the roller frame. A roller support frame is rotatably fitted on the shaft of each lower support roller. The roller support frame is divided into two parts, which are symmetrically located on the lower support rollers on both sides and are arranged intersectingly. The middle parts of the two parts are rotatably fitted to each other. A support roller is rotatably fitted at the top of each roller support frame. The support rollers are at the same height as the three-jaw chuck assembly, and the support rollers are used to support the circular tube.

[0009] Preferably, a lead screw nut is provided between the lower support rollers on both sides, the lead screw nut is rotatably engaged with the lower support roller, a lead screw is rotatably engaged in the roller frame, the length of the lead screw is adapted to the length of the roller frame, the lead screw passes through the lead screw nut, the lead screw and the lead screw nut are threadedly engaged, the front part and the rear part of the lead screw rotate in opposite directions, so that when the lead screw rotates, it drives the lead screw nuts on both sides to move in opposite directions, a crank handle is rotatably engaged on the roller frame, and the crank handle is poweredly connected to the lead screw.

[0010] Preferably, a second slide rail is fixedly installed on the base frame, the length of the second slide rail is adapted to the length of the base frame, the second slide rail is adjacent to the first slide rail, a column connecting plate is slidably fitted on the second slide rail, a column is fixedly installed on the column connecting plate, the cutting torch rotation assembly is provided on the column, the rack is fixedly installed on the base frame, the rack is located below the column connecting plate, a servo motor is fixedly installed on the column connecting plate, a gear is provided below the column connecting plate, the gear is fixedly connected to the shaft of the servo motor, and the gear meshes with the rack.

[0011] Preferably, the cleaning mechanism includes a suspension located between two roller support frames. Auxiliary positioning rods are provided on both sides below the suspension. The top end of each auxiliary positioning rod is rotatably engaged with the bottom end of the suspension, and the bottom end of each auxiliary positioning rod is rotatably engaged with the two roller support frames. A movable frame is slidably engaged on the suspension, and the movable frame moves up and down. A pressure detector is provided below the movable frame and is fixedly mounted on the suspension. A spring is provided between the detection end of the pressure detector and the movable frame. The top end of the spring is connected to the movable frame, and the bottom end of the spring is connected to the detection end of the pressure detector. A bottom wheel is rotatably engaged on the movable frame, located between the two support rollers, and the plane where the bottom end of the bottom wheel and the bottom end of the support roller are located is adjacent.

[0012] Preferably, a lower plate is fixedly installed on both sides of the column connecting plate, and a guide rail is fixedly installed on each lower plate. The guide rail is located between the rack and the lower plate. A moving block is slidably fitted on each guide rail, and a screw is rotatably fitted inside each guide rail. The screw passes through the moving block and is threadedly fitted to the moving block. A micro motor is fixedly installed on each lower plate, and the micro motor is poweredly connected to the screw.

[0013] Preferably, each of the moving blocks is fixedly mounted with a cylinder, the cylinder being located between the moving block and the rack, and each of the cylinder extension rods is fixedly mounted with a fixing clamp, and each of the fixing clamps is fixedly mounted with a scraper.

[0014] A method for processing prefabricated refrigeration station parts, using the aforementioned plasma intersecting line cutting machine.

[0015] Compared with the prior art, the present invention provides a plasma intersecting line cutting machine, which has the following beneficial effects: 1. This plasma intersecting line cutting machine, after the round tube is positioned on the machine, utilizes the interaction of a rack and pinion to create a gear-rack drive structure that moves the torch rotation assembly on the base frame. The torch rotation assembly then performs intersecting line cutting on the round tube. Each time the round tube is positioned, its own weight triggers the cleaning mechanism. The cleaning mechanism controls the scraper to press against the rack, so that as the scraper moves with the torch rotation assembly, it simultaneously scrapes away the welding slag and waste on the rack. This prevents the accumulation of a large amount of waste and welding slag on the rack after prolonged operation, thus preventing equipment vibration and abnormal noise caused by waste and welding slag clogging the rack. This improves the stability of the equipment operation, indirectly enhancing the processing quality and efficiency of the plasma intersecting line cutting machine.

[0016] 2. This plasma intersecting line cutting machine, through the setting of bottom rollers and pressure detectors, uses the self-weight of the round tube placed on the support rollers to determine whether an unprocessed round tube is placed on the support rollers, thereby determining whether the plasma intersecting line cutting machine is in operation. This integrates the scraping action of the scraper with the machine's own operation, forming an automated cleaning process, further improving the stability of the equipment operation, and avoiding the impact of welding slag and waste on the operation of the equipment.

[0017] 3. This plasma intersecting line cutting machine, through the setting of the moving block and screw, uses a micro motor to drive the moving block to move on the guide rail when the scraper height needs to be adjusted. The moving block drives the cylinder to move, thereby driving the scraper to align with the rack. This ensures that the scraper's position height can be adjusted even after the scraper wears and deforms, ensuring that the scraper can stably complete the scraping operation and improving the stability of the equipment operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structural distribution at the base of the present invention; Figure 2 This is a schematic diagram of the overall structure of the plasma intersecting line cutting machine of the present invention; Figure 3 This is a schematic diagram of the cutting mechanism structure of the present invention; Figure 4 This is a schematic diagram of the structural distribution at the lead screw of the present invention; Figure 5 This is a schematic diagram of the structural distribution at the second slide rail of the present invention; Figure 6 This is a schematic diagram of the structural distribution at the gear of the present invention; Figure 7 This is a schematic diagram of the cleaning mechanism structure of the present invention; Figure 8 for Figure 7Enlarged structural diagram at point A in the middle; Figure 9 This is a schematic diagram of the structural distribution at the column connecting plate of the present invention; Figure 10 for Figure 9 Enlarged structural diagram at point B.

[0019] In the diagram: 1. Base frame; 2. Cutting mechanism; 21. Three-jaw chuck assembly; 22. First slide rail; 23. Roller frame seat; 24. Locking handwheel; 25. Lower support roller; 26. Roller support frame; 27. Support roller; 28. Lead screw nut; 29. ​​Lead screw; 210. Hand crank; 211. Second slide rail; 212. Column connecting plate; 213. Column; 214. Torch rotation assembly; 215. Rack; 216. Servo motor; 217. Gear; 3. Cleaning mechanism; 31. Suspension; 32. Auxiliary positioning rod; 33. Moving frame; 34. Pressure detector; 35. Spring; 36. Bottom wheel; 37. Lower connecting plate; 38. Guide rail; 39. Moving block; 310. Screw; 311. Micro motor; 312. Cylinder; 313. Fixing clamp; 314. Scraper. Detailed Implementation

[0020] 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.

[0021] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes a plasma intersecting line cutting machine and a processing method for prefabricated refrigeration station parts.

[0022] Example 1, a typical implementation of this application, such as Figure 1 As shown, a plasma intersecting line cutting machine includes a base frame 1, a cutting mechanism 2 mounted on the base frame 1, and a cleaning mechanism 3 mounted on the cutting mechanism 2. The cutting mechanism 2 uses the interaction between a rack 215 and a gear 217 to drive a torch rotation assembly 214 to move on the base frame 1. The torch rotation assembly 214 is used for plasma intersecting line cutting. The cleaning mechanism 3 is located next to the torch rotation assembly 214. The cleaning mechanism 3 uses scraper 314 to clean the rack 215. The scraper 314 is symmetrically arranged on both sides of the torch rotation assembly 214 and is adjacent to the rack 215.

[0023] When using this invention: After the round tube is positioned on the plasma intersecting line cutting machine, the interaction between the rack 215 and the gear 217 forms a rack and pinion drive structure, driving the torch rotation assembly 214 to move on the base frame 1. The torch rotation assembly 214 then performs intersecting line cutting on the round tube on the plasma intersecting line cutting machine. Each time the round tube is positioned on the plasma intersecting line cutting machine, its own weight triggers the cleaning mechanism 3 to operate. The cleaning mechanism 3 controls the scraper 31. When the scraper 314 moves along with the torch rotation assembly 214, it touches the rack 215, and simultaneously scrapes and cleans the welding slag and waste on the rack. This prevents a large amount of waste and welding slag from accumulating on the rack 215 after long-term operation of the plasma intersecting line cutting machine, thus preventing equipment vibration and abnormal noise caused by waste and welding slag clogging the rack 215. This improves the stability of equipment operation, indirectly improves the processing quality of the plasma intersecting line cutting machine, and increases the efficiency of equipment use.

[0024] Example 2, as Figures 2-6 As shown, the difference from the above embodiment is that the cutting mechanism 2 includes a three-jaw chuck assembly 21. The three-jaw chuck assembly 21 is rotatably mounted on one side of the base frame 1. The three-jaw chuck assembly 21 is used to clamp the round tube. A first slide rail 22 is fixedly installed on the base frame 1. The first slide rail 22 is adjacent to the three-jaw chuck assembly 21. The trajectory of the first slide rail 22 is the same as the direction in which the three-jaw chuck assembly 21 clamps the round tube. The overall length of the first slide rail 22 and the three-jaw chuck assembly 21 is adapted to the length of the base frame 1.

[0025] Furthermore, the three-jaw chuck assembly 21 also includes a stepper motor-driven gear ring transmission structure for driving the clamped round tube to deflect.

[0026] Furthermore, the three-jaw chuck assembly 21 is an existing structure and will not be described in detail here.

[0027] Furthermore, a roller bracket 23 is slidably fitted on the first slide rail 22, and a locking handwheel 24 is provided on the roller bracket 23. The locking handwheel 24 passes through the roller bracket 23 and is threadedly engaged with the roller bracket 23. The locking handwheel 24 is located above the first slide rail 22. After the locking handwheel 24 is rotated to abut against the first slide rail 22, the roller bracket 23 is fixed on the first slide rail 22.

[0028] Furthermore, multiple lower support rollers 25 are movably arranged within the roller frame 23. The lower support rollers 25 are symmetrically distributed within the roller frame 23 and roll linearly within the roller frame 23. A roller support frame 26 is rotatably engaged on the shaft of each lower support roller 25. The roller support frame 26 is arranged in two parts, with the two parts symmetrically located on the lower support rollers 25 on both sides. The two parts of the roller support frame 26 are arranged crosswise, with the middle of the two parts of the roller support frame 26 rotatably engaged with each other. A support roller 27 is rotatably engaged at the top of each roller support frame 26. The support roller 27 is located at the same height as the three-jaw chuck assembly 21 and is used to support the round tube.

[0029] Furthermore, a lead screw nut 28 is provided between the lower support rollers 25 on both sides. The lead screw nut 28 is rotatably engaged with the lower support roller 25. A lead screw 29 is rotatably engaged inside the roller frame 23. The length of the lead screw 29 is adapted to the length inside the roller frame 23. The lead screw 29 passes through the lead screw nut 28. The lead screw 29 and the lead screw nut 28 are threadedly engaged. The front part and the rear part of the lead screw 29 rotate in opposite directions, so that when the lead screw 29 rotates, it drives the lead screw nuts 28 on both sides to move in opposite directions. A crank handle 210 is rotatably engaged on the roller frame 23. The crank handle 210 is poweredly connected to the lead screw 29.

[0030] Furthermore, a second slide rail 211 is fixedly installed on the base frame 1. The length of the second slide rail 211 is adapted to the length of the base frame 1. The second slide rail 211 is adjacent to the first slide rail 22. A column connecting plate 212 is slidably fitted on the second slide rail 211. A column 213 is fixedly installed on the column connecting plate 212. A cutting torch rotation assembly 214 is provided on the column 213. A rack 215 is fixedly installed on the base frame 1. The rack 215 is located below the column connecting plate 212. A servo motor 216 is fixedly installed on the column connecting plate 212. A gear 217 is provided below the column connecting plate 212. The gear 217 is fixedly connected to the shaft of the servo motor 216. The gear 217 meshes with the rack 215.

[0031] In the process of intersecting line cutting, the round tube is first inserted into the three-jaw chuck assembly 21. After the round tube is inserted into the three-jaw chuck assembly 21, the end of the round tube is placed on the support roller 27. Then, the three-jaw chuck assembly 21 is started to clamp and fix the round tube. Then, the servo motor 216 is started, and the servo motor 216 drives the gear 217 to rotate, so that the gear 217 moves on the rack 215. Thus, the gear 217 drives the column connecting plate 212 to move on the second slide rail 211. The column connecting plate 212 drives the column 213 to move. The column 213 drives the cutting torch rotation assembly 214 to move. The cutting torch rotation assembly 214, in conjunction with the movement of the column connecting plate 212, and in conjunction with the three-jaw chuck assembly 21, drives the round tube to deflect in order to perform intersecting line cutting on the round tube. When it is necessary to adjust the height position of the support roller 27, turn the crank 210. The crank 210 drives the lead screw 29 to rotate. The lead screw 29 drives the lead screw nut 28 to move. The lead screw nut 28 drives the lower support rollers 25 on both sides to move relative to each other. The lower support rollers 25 drive the roller support frame 26 to open and close relative to each other. The roller support frame 26 drives the support roller 27 to move, thereby adjusting the height position of the support roller 27. When it is necessary to adjust the position of the roller bracket 23, turn the locking handwheel 24 to release the pressure on the first slide rail 22, thereby releasing the fixation of the roller bracket 23. Push the roller bracket 23 to adjust its position on the first slide rail 22, and then turn the locking handwheel 24 again to fix the roller bracket 23 back in place.

[0032] Example 3, as Figures 7-10 As shown, the difference from the above embodiment is that the cleaning mechanism 3 includes a suspension 31, which is located between two roller support frames 26 on both sides. Auxiliary positioning rods 32 are provided on both sides below the suspension 31. The top end of the auxiliary positioning rod 32 is rotatably engaged with the bottom end of the suspension 31, and the bottom end of the auxiliary positioning rod 32 is rotatably engaged with the two roller support frames 26 on both sides. A movable frame 33 is slidably engaged on the suspension 31, and the movable frame 33 moves up and down. A pressure detector 34 is provided below the movable frame 33 and is fixedly installed on the suspension 31. A spring 35 is provided between the detection end of the pressure detector 34 and the movable frame 33. The top end of the spring 35 is connected to the movable frame 33, and the bottom end of the spring 35 is connected to the detection end of the pressure detector 34. A bottom wheel 36 is rotatably engaged on the movable frame 33, located between two support rollers 27 on both sides. The planes where the bottom wheel 36 and the bottom ends of the support rollers 27 are located are adjacent.

[0033] Furthermore, lower plates 37 are fixedly installed on both sides of the column connecting plate 212. Guide rails 38 are fixedly installed on the lower plates 37. The guide rails 38 are located between the rack 215 and the lower plates 37. Moving blocks 39 are slidably fitted on the guide rails 38. Screws 310 are rotatably fitted inside the guide rails 38. The screws 310 pass through the moving blocks 39 and are threadedly fitted with the moving blocks 39. Micro motors 311 are fixedly installed on the lower plates 37 and are poweredly connected to the screws 310.

[0034] Furthermore, each movable block 39 is fixedly equipped with a cylinder 312, which is located between the movable block 39 and the rack 215. Each cylinder 312 has a fixed clamp 313 fixedly installed on its extension rod, and each fixed clamp 313 has a scraper 314 fixedly installed on its fixed clamp 314.

[0035] As the round tube is placed on the support roller 27, its own weight presses down on the bottom roller 36. The bottom roller 36, under pressure, drives the moving frame 33 to move down. The moving frame 33 presses the spring 35, and the spring 35 transmits the force to the detection end of the pressure detector 34, thereby determining that an unprocessed round tube has been placed. The pressure detector 34 controls the cylinder 312 to run. The cylinder 312 drives the fixed clamp 313 to extend. The fixed clamp 313 drives the scraper 314 to move, so that the scraper 314 abuts against the rack 215. Then, as the column connecting plate 212 moves, the scraper 314 will simultaneously scrape off the welding slag and waste on the rack 215. When it is necessary to adjust the height of the scraper 314, the micro motor 311 is started, the micro motor 311 drives the screw 310 to rotate, the screw 310 drives the moving block 39 to move on the guide rail 38, the moving block 39 drives the cylinder 312 to move, thereby driving the scraper 314 to align with the position height of the rack 215.

[0036] Working principle of the invention: After the round tube is positioned on the plasma intersecting line cutting machine, the interaction between the rack 215 and the gear 217 forms a rack and pinion drive structure, driving the torch rotation assembly 214 to move on the base frame 1. The torch rotation assembly 214 then performs intersecting line cutting on the round tube on the plasma intersecting line cutting machine. Each time the round tube is positioned on the plasma intersecting line cutting machine, its own weight triggers the cleaning mechanism 3 to operate. The cleaning mechanism 3 controls the scraper 31. 4. When the scraper 314 moves along with the torch rotation assembly 214, it touches the rack 215 and scrapes away the welding slag and waste on the rack simultaneously. This prevents a large amount of waste and welding slag from accumulating on the rack 215 after long-term operation of the plasma intersecting line cutting machine. It also prevents the equipment from shaking and making abnormal noises due to the blockage of the rack 215 by the waste and welding slag, thus improving the stability of the equipment operation, improving the processing quality of the plasma intersecting line cutting machine, and improving the efficiency of the equipment. In the process of intersecting line cutting, the round tube is first inserted into the three-jaw chuck assembly 21. After the round tube is inserted into the three-jaw chuck assembly 21, the end of the round tube is placed on the support roller 27. Then, the three-jaw chuck assembly 21 is started to clamp and fix the round tube. Then, the servo motor 216 is started, and the servo motor 216 drives the gear 217 to rotate, so that the gear 217 moves on the rack 215. Thus, the gear 217 drives the column connecting plate 212 to move on the second slide rail 211. The column connecting plate 212 drives the column 213 to move. The column 213 drives the cutting torch rotation assembly 214 to move. The cutting torch rotation assembly 214, in conjunction with the movement of the column connecting plate 212, and in conjunction with the three-jaw chuck assembly 21, drives the round tube to deflect in order to perform intersecting line cutting on the round tube. When it is necessary to adjust the height position of the support roller 27, turn the crank 210. The crank 210 drives the lead screw 29 to rotate. The lead screw 29 drives the lead screw nut 28 to move. The lead screw nut 28 drives the lower support rollers 25 on both sides to move relative to each other. The lower support rollers 25 drive the roller support frame 26 to open and close relative to each other. The roller support frame 26 drives the support roller 27 to move, thereby adjusting the height position of the support roller 27. When it is necessary to adjust the position of the roller bracket 23, turn the locking handwheel 24 to release the pressure on the first slide rail 22, thereby releasing the fixation of the roller bracket 23. Push the roller bracket 23 to adjust its position on the first slide rail 22, and then turn the locking handwheel 24 again to fix the roller bracket 23 back in place. As the round tube is placed on the support roller 27, its own weight presses down on the bottom roller 36. The bottom roller 36, under pressure, drives the moving frame 33 to move down. The moving frame 33 presses the spring 35, and the spring 35 transmits the force to the detection end of the pressure detector 34, thereby determining that an unprocessed round tube has been placed. The pressure detector 34 controls the cylinder 312 to run. The cylinder 312 drives the fixed clamp 313 to extend. The fixed clamp 313 drives the scraper 314 to move, so that the scraper 314 abuts against the rack 215. Then, as the column connecting plate 212 moves, the scraper 314 will simultaneously scrape off the welding slag and waste on the rack 215. When it is necessary to adjust the height of the scraper 314, the micro motor 311 is started, the micro motor 311 drives the screw 310 to rotate, the screw 310 drives the moving block 39 to move on the guide rail 38, the moving block 39 drives the cylinder 312 to move, thereby driving the scraper 314 to align with the position height of the rack 215.

[0037] A method for processing prefabricated refrigeration station parts, using the aforementioned plasma intersecting line cutting machine.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plasma intersecting line cutting machine, comprising a base frame, a cutting mechanism mounted on the base frame, and a cleaning mechanism mounted on the cutting mechanism, characterized in that: The cutting mechanism utilizes the interaction between rack and gear to drive the torch rotation assembly to move on the base frame. The torch rotation assembly is used for plasma intersecting line cutting. The cleaning mechanism is located next to the cutting torch rotation assembly. The cleaning mechanism uses scrapers to clean the rack. The scrapers are symmetrically arranged on both sides of the cutting torch rotation assembly and are adjacent to the rack. The cleaning mechanism includes a suspension located between two roller support frames. Auxiliary positioning rods are provided on both sides below the suspension. The top end of each auxiliary positioning rod is rotatably engaged with the bottom end of the suspension, and the bottom end of each auxiliary positioning rod is rotatably engaged with the two roller support frames. A movable frame is slidably engaged on the suspension, and the movable frame moves up and down. A pressure detector is located below the movable frame and is fixedly mounted on the suspension. A spring is provided between the detection end of the pressure detector and the movable frame. The top end of the spring is connected to the movable frame, and the bottom end of the spring is connected to the detection end of the pressure detector. A bottom wheel is rotatably engaged on the movable frame, located between the two support rollers, and the plane where the bottom end of the bottom wheel is located is adjacent to the plane where the support roller is located.

2. The plasma intersecting line cutting machine according to claim 1, characterized in that: The cutting mechanism includes a three-jaw chuck assembly, which is rotatably mounted on one side of the base frame. The three-jaw chuck assembly is used to clamp a round tube. A first slide rail is fixedly installed on the base frame. The first slide rail is adjacent to the three-jaw chuck assembly. The trajectory of the first slide rail is the same as the direction in which the three-jaw chuck assembly clamps the round tube. The overall length of the first slide rail and the three-jaw chuck assembly is adapted to the length of the base frame.

3. The plasma intersecting line cutting machine according to claim 2, characterized in that: A roller bracket is slidably fitted on the first slide rail. A locking handwheel is provided on the roller bracket. The locking handwheel passes through the roller bracket and is threadedly fitted with the roller bracket. The locking handwheel is located above the first slide rail. When the locking handwheel is rotated to abut against the first slide rail, the roller bracket is fixed on the first slide rail.

4. A plasma intersecting line cutting machine according to claim 3, characterized in that: Multiple lower support rollers are movably arranged within the roller frame, symmetrically distributed within the roller frame. The lower support rollers roll linearly within the roller frame. A roller support frame is rotatably fitted onto the shaft of each lower support roller. The roller support frame is divided into two parts, symmetrically located on the lower support rollers on both sides, and intersecting. The middle sections of the two parts are rotatably fitted to each other. Support rollers are rotatably fitted at the top of each roller support frame. These support rollers are at the same height as the three-jaw chuck assembly and are used to support the circular tube.

5. A plasma intersecting line cutting machine according to claim 4, characterized in that: A lead screw nut is provided between the lower support rollers on both sides. The lead screw nut is rotatably engaged with the lower support roller. A lead screw is rotatably engaged inside the roller frame. The length of the lead screw is adapted to the length inside the roller frame. The lead screw passes through the lead screw nut. The lead screw and the lead screw nut are threadedly engaged. The front and rear threads of the lead screw rotate in opposite directions, so that when the lead screw rotates, it drives the lead screw nuts on both sides to move in opposite directions. A crank handle is rotatably engaged on the roller frame. The crank handle is poweredly connected to the lead screw.

6. A plasma intersecting line cutting machine according to claim 5, characterized in that: A second slide rail is fixedly installed on the base frame. The length of the second slide rail is adapted to the length of the base frame. The second slide rail is adjacent to the first slide rail. A column connecting plate is slidably fitted on the second slide rail. A column is fixedly installed on the column connecting plate. The cutting torch rotation assembly is provided on the column. The rack is fixedly installed on the base frame. The rack is located below the column connecting plate. A servo motor is fixedly installed on the column connecting plate. A gear is provided below the column connecting plate. The gear is fixedly connected to the shaft of the servo motor. The gear meshes with the rack.

7. A plasma intersecting line cutting machine according to claim 6, characterized in that: Both sides of the column connecting plate are fixedly installed with lower plates, and guide rails are fixedly installed on the lower plates. The guide rails are located between the rack and the lower plates. Moving blocks are slidably fitted on the guide rails, and screws are rotatably fitted inside the guide rails. The screws pass through the moving blocks and are threadedly fitted with the moving blocks. Micro motors are fixedly installed on the lower plates and are poweredly connected to the screws.

8. A plasma intersecting line cutting machine according to claim 7, characterized in that: Each of the movable blocks is fixedly equipped with a cylinder, which is located between the movable block and the rack. Each cylinder's extension rod is fixedly equipped with a clamping device, and each clamping device is fixedly equipped with a scraper.

9. A method for processing parts of a prefabricated refrigeration station, characterized in that, The plasma intersecting line cutting machine as described in any one of claims 1-8 was used.

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