Square and rectangular tube processing plasma cutting machine

Abstract

The application relates to a plasma cutting machine for square rectangular tube machining in the technical field of cutting, which comprises a machine tool, a supporting assembly is installed on one side of the middle of the top of the machine tool, an X-axis transverse moving mechanism is arranged on the machine tool, a movable frame is installed at the moving end of the X-axis transverse moving mechanism, a Y-axis vertical moving mechanism is installed at the middle of the inner wall top of the movable frame, a lifting block is installed at the moving end of the Y-axis vertical moving mechanism, a mounting frame is movably arranged on the lifting block, and a buffer assembly is arranged between the mounting frame and the lifting block. The application is convenient for multi-angle machining of the square rectangular tube, improves the machining stability and efficiency, collects waste slag generated in the cutting process, avoids slag adhesion on the surface of the square rectangular tube and diffusion into the working environment, is convenient for cleaning the inside of the cutting machine, makes the working environment clean, guarantees normal use, can conveniently push down the square rectangular tube from the original pipe material, realizes the effect of convenient material stripping, and does not need manual intervention and is convenient to operate.

Description

Technical Field

[0001] This invention relates to the field of cutting technology, and in particular to a plasma cutting machine for processing square and rectangular tubes. Background Technology

[0002] Plasma cutting is a processing method that uses the heat of a high-temperature plasma arc to melt (and evaporate) the metal at the workpiece's cut edge, and then uses the momentum of the high-speed plasma to expel the molten metal, forming a cut. Plasma cutting machines, when used with different working gases, can cut various metals that are difficult to cut with oxygen cutting, especially non-ferrous metals. Its main advantages are high cutting speed, smooth cut surface, minimal thermal deformation, and almost no heat-affected zone when cutting thin metals. Plasma cutting machines are widely used in various industries such as automotive, chemical machinery, construction machinery, and steel structures. Currently, plasma cutting machines are commonly used for cutting rectangular and square tubes used in many industries. However, during the cutting process, the high-temperature plasma arc melts the metal material, and some of the molten metal forms slag. This slag usually has an irregular shape and its main components are oxides of the cut metal and some incompletely melted metal particles. This slag adheres to the surface of the rectangular and square tubes and inside the cutting machine, making it difficult to clean and affecting normal use.

[0003] To address the cleaning difficulties of existing plasma cutting machines, a search revealed a fully automatic square tube cutting machine (authorization number CN116393838B), relating to the field of cutting machine technology. This fully automatic square tube cutting machine includes a fixed frame with a groove on its upper side. A sliding rod is fixedly connected to the inner wall of the groove, and a slider is slidably connected to the outer wall of the sliding rod. A support post is fixedly connected to the upper surface of the slider. A through-hole is formed on the slider, and a limit pin is threaded to the inner wall of the threaded hole. An installation hole is formed at the upper part of the support post, and a pressing block is inserted into the inner wall of the installation hole. A first spring is fixedly connected to one end of the pressing block, and one end of the first spring is fixedly connected to the outer wall of the support post. This fully automatic square tube cutting machine, by incorporating a fan, air duct, and four fixed blocks, allows the device to blow a large amount of airflow onto the surface of the square tube within a relatively confined space, cleaning the surface of the square tube and thus preventing a large amount of impurities from adhering to the clamping blocks.

[0004] Based on the above research, existing plasma cutting machines can solve the problem of difficult cleaning. However, during the cutting process, if the cut is a small or thin rectangular tube, the cut part may detach from the tube due to its own weight or slight external force (such as the residual force of the airflow), similar to direct stripping. However, if the cut is a large or heavy rectangular tube, it generally will not detach directly after cutting and may require manual separation from the tube, making the operation inconvenient. Therefore, a plasma cutting machine for rectangular tube processing is proposed to improve the above problems. Summary of the Invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that some square and rectangular tubes are generally not directly removed after cutting, and may require manual action to separate them from the tube, which makes the operation inconvenient.

[0006] To address the aforementioned problems, this invention provides a plasma cutting machine for processing rectangular tubes, comprising a machine tool, a support assembly mounted on one side of the top center of the machine tool, an X-axis transverse movement mechanism mounted on the machine tool, a movable frame mounted on the moving end of the X-axis transverse movement mechanism, a Y-axis vertical movement mechanism mounted at the top center of the inner wall of the movable frame, a lifting block mounted on the moving end of the Y-axis vertical movement mechanism, a mounting frame movably mounted on the lifting block, a buffer assembly disposed between the mounting frame and the lifting block, an annular dust collection hood mounted at the bottom of the mounting frame, a waste discharge pipe disposed at the bottom center of the annular dust collection hood, a cleaning assembly disposed on the inner wall of the annular dust collection hood, and a cutting assembly disposed inside the annular dust collection hood and on the movable frame.

[0007] A ventilation component is provided on one side of the mounting bracket, and the ventilation component is connected to the interior of the annular dust collection hood;

[0008] A material feeding assembly is fixed to the top of the annular dust collection hood near the movable frame. The material feeding assembly includes a fixed frame fixed to the annular dust collection hood. A telescopic rod is inserted into the inner wall of the fixed frame. A tension spring is installed on the top of the telescopic rod and the top inner wall of the fixed frame. A first connecting shaft is rotatably connected to the bottom of the telescopic rod, and material feeding wheels are installed at both ends of the first connecting shaft.

[0009] The invention is further configured such that the buffer assembly includes a through slot formed on the lifting block, and a support seat inserted into the through slot is fixed on the inner wall of the mounting bracket. Buffer springs are installed on both sides of the top of the support seat and the top inner wall of the through slot. A guide post is fixed on the inner wall of the through slot, and a guide hole is provided on the support seat for the guide post to pass through.

[0010] The invention is further configured such that the cleaning component includes a fixed base fixedly installed on the top of the other side of the annular dust collection hood, and a second connecting shaft is rotatably connected to the bottom of the fixed base. Both sides of the second connecting shaft are equipped with transmission gears, the positions of which are higher than the height of the feeding wheel. A first sliding groove is provided on one side of the fixed base, and an annular sliding rail slides along the inner wall of the first sliding groove. A rotating ring is fixed on one side of the annular sliding rail, and a plurality of cleaning scrapers that conform to the inner wall of the annular dust collection hood are installed on one side of the rotating ring. A third connecting shaft is rotatably mounted on the fixed base, and transmission wheels are installed at one end of the third connecting shaft and one end of the second connecting shaft. A transmission belt connects the two transmission wheels. A driven gear is installed at the other end of the third connecting shaft. The outer wall of the rotating ring is provided with equally spaced second toothed grooves that mesh with the driven gear.

[0011] The present invention is further configured such that the ventilation assembly includes a circulating fan fixedly installed on the outer wall of one end of the mounting frame, and an exhaust pipe inserted into the waste discharge pipe is installed at the air inlet end of the circulating fan, and an exhaust pipe inserted into the annular dust collection hood is installed at the air outlet end of the circulating fan. A filter screen is installed at the air inlet of the exhaust pipe, and the top surface of the filter screen, the top surface of the air inlet of the exhaust pipe, and the bottom surface of the air outlet of the exhaust pipe all conform to the inner wall surface of the annular dust collection hood.

[0012] The present invention is further configured such that the cutting assembly includes a plasma cutting machine body mounted on the movable frame, and an installation sleeve is fixedly mounted on the top of the annular dust collection hood near the fixed frame. An installation tube is fixedly mounted on the inner wall of the installation sleeve. A connecting tube is fixedly mounted on the top of the installation tube to one side of the plasma cutting machine body, and a cutting gun is fixedly mounted on the bottom of the installation tube.

[0013] The invention is further configured such that the support assembly includes a support frame fixedly installed on one side of the top center of the machine tool, and a threaded rod is rotatably connected to the inner wall of the support frame. A forward and reverse motor for driving the threaded rod to rotate is fixedly installed at one end of the support frame. A second support is screwed onto the threaded rod, and a second sliding groove is opened at the bottom of both ends of the second support. A transverse slide rail inserted into the second sliding groove is installed on both sides of the inner wall of the support frame. A first support is fixedly installed on one side of the inner wall of the support frame, and a through hole for the threaded rod to pass through is opened at the bottom of the first support. Mounting rings are installed on the inner walls of the first support and the second support. Rotary rings are rotatably connected to the inner walls of the two mounting rings through bearings. A four-jaw chuck is fixedly installed on one side of each rotating ring. Pullers with equal distances are rotatably connected to the jaws of the four-jaw chuck.

[0014] The present invention is further configured such that an installation groove is provided on the inner wall of the first support and one side of one of the mounting rings, and a drive gear is rotatably connected to the inner wall of the installation groove. A first tooth groove is provided at equal intervals at the middle position of the outer wall of the rotating ring. The first tooth groove meshes with the drive gear. A drive motor for driving the drive gear to rotate is fixedly installed on one side of the first support.

[0015] The invention is further configured such that a support rod is fixed on one side of the mounting frame, and a guide groove is provided on the movable frame for the support rod to pass through. An infrared transmitter is fixedly installed at the bottom end of the support rod, and the infrared transmitter coincides with the center of the annular dust collection cover. A positioning frame is fixedly installed on one side of another mounting ring, and an infrared receiver is fixedly installed at the middle position of one side of the positioning frame.

[0016] The invention is further configured such that an equipment box is fixedly installed on the inner wall of the machine tool, and waste discharge grooves are equally distributed on the top of the equipment box and the top of the machine tool. A funnel is fixedly installed on the inner wall of the top of the equipment box, and a collection box is installed on the inner wall of the equipment box by magnetic attraction. The collection box is located at the outlet of the funnel, and the bottom of the waste discharge pipe passes through one of the waste discharge grooves and extends into the funnel.

[0017] The present invention is further configured such that a controller is installed on the equipment box, and the controller is electrically connected to the plasma cutting machine body, the Y-axis vertical movement mechanism, the forward and reverse motors, the drive motor, the X-axis horizontal movement mechanism, the infrared emitter, the infrared receiver, and the circulating fan.

[0018] In summary, by adopting the above structure, the present invention has the following advantages compared with the prior art:

[0019] 1. The support components allow for easy adjustment of the distance between the two four-jaw chucks to accommodate square and rectangular tubes of different lengths. Meanwhile, the pulleys at the ends of the four-jaw chuck jaws reduce friction with the surface of the square and rectangular tubes. The drive motor drives the drive gear to rotate, causing the chuck and the four-jaw chuck to rotate, facilitating multi-angle processing of the square and rectangular tubes. This improves the stability and efficiency of the processing. Furthermore, the Y-axis vertical movement mechanism, infrared transmitter, and infrared receiver enable precise cutting and positioning, ensuring the accuracy of the cutting position.

[0020] 2. The annular dust collection hood can collect the waste generated during the cutting process. As the rectangular tube rotates, it drives the cleaning component to rotate, which in turn drives the cleaning scraper to rotate inside the annular dust collection hood. This cleans the inner wall of the annular dust collection hood, preventing waste and dust from adhering and ensuring dust collection efficiency. The circulating fan, exhaust pipe and exhaust pipe in the ventilation component realize air circulation in the annular dust collection hood, blowing the waste along the waste discharge pipe to achieve efficient slag discharge. This prevents molten slag from adhering to the surface of the rectangular tube and spreading into the working environment, making it easier to clean the inside of the cutting machine, keeping the working environment clean and ensuring normal use.

[0021] 3. The material feeding assembly ensures that the feeding wheel remains in contact with the surface of the rectangular tube under the action of the tension spring. After the rectangular tube is cut, the tension of the tension spring applies pressure to the feeding wheel, which can easily pull the rectangular tube off the original tube, achieving the effect of easy material removal. No manual separation is required, making the operation convenient and improving work efficiency.

[0022] 4. By installing a funnel on the top of the equipment box, when the waste discharge pipe discharges the waste residue from the annular dust collection hood into the funnel, the waste residue can be easily collected by the collection box, which facilitates subsequent processing and keeps the working environment clean. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of a plasma cutting machine for processing square and rectangular tubes according to the present invention;

[0024] Figure 2 This is a front view of a plasma cutting machine for processing square and rectangular tubes according to the present invention;

[0025] Figure 3 This is a schematic diagram of the X-axis transverse movement mechanism and guide groove structure of a plasma cutting machine for processing square and rectangular tubes according to the present invention.

[0026] Figure 4 This is a schematic diagram of the mounting frame and ventilation assembly structure of a plasma cutting machine for processing square and rectangular tubes according to the present invention;

[0027] Figure 5 This is a schematic diagram of the buffer spring and cutting gun structure of a plasma cutting machine for processing square and rectangular tubes according to the present invention;

[0028] Figure 6 This is a front sectional view of the annular dust collection hood of a plasma cutting machine for processing square and rectangular tubes according to the present invention;

[0029] Figure 7 This is a side sectional view of the annular dust collection hood of a plasma cutting machine for processing square and rectangular tubes according to the present invention;

[0030] Figure 8This is a schematic diagram of the cleaning component structure of a plasma cutting machine for processing square and rectangular tubes according to the present invention;

[0031] Figure 9 This is a schematic diagram of the driven gear and the first slide groove structure of a plasma cutting machine for processing square and rectangular tubes according to the present invention.

[0032] Figure 10 This is a schematic diagram of the material feeding assembly structure of a plasma cutting machine for processing square and rectangular tubes according to the present invention;

[0033] Figure 11 This is a schematic diagram of the collection box and funnel structure of a plasma cutting machine for processing square and rectangular tubes according to the present invention;

[0034] Figure 12 This is a schematic diagram of the support component structure of a plasma cutting machine for processing square and rectangular tubes according to the present invention;

[0035] Figure 13 This is a schematic diagram of the drive motor and drive gear structure of a plasma cutting machine for processing square and rectangular tubes according to the present invention;

[0036] Figure 14 This is a schematic diagram of the second support and positioning frame structure of a plasma cutting machine for processing square and rectangular tubes according to the present invention.

[0037] Explanation of the labels in the diagram:

[0038] 1. Machine tool; 2. Controller; 3. Movable frame; 4. Equipment box; 5. Waste discharge trough; 6. Cutting assembly; 601. Plasma cutting machine body; 602. Connecting pipe; 603. Mounting sleeve; 604. Mounting pipe; 605. Cutting gun; 7. Y-axis vertical movement mechanism; 8. Lifting block; 9. Mounting frame; 10. Annular dust collection hood; 11. Support assembly; 1101. Support frame; 1102. Threaded rod; 1103. First support; 1104. Forward and reverse motor; 1105. Four-jaw chuck; 1106. Mounting ring; 1107. Transverse slide rail; 1108. Pulley; 1109. Second support; 1110. Rotating ring; 1111. First tooth groove; 1112. Drive gear; 1113. Drive motor; 12. X-axis transverse movement mechanism; 13. Infrared... 14. Line transmitter; 15. Support rod; 16. Ventilation assembly; 17. Exhaust duct; 18. Circulating fan; 19. Exhaust duct; 20. Filter screen; 11. Guide groove; 21. Waste discharge pipe; 22. Cleaning assembly; 13. Fixing base; 14. Transmission belt; 15. Transmission gear; 16. Rotary ring; 17. Circular slide rail; 18. Cleaning scraper; 18. Second tooth groove; 19. Driven gear; 20. First slide groove; 21. Support base; 22. Guide column; 22. Buffer spring; 23. Material feeding assembly; 24. Fixing frame; 25. Telescopic rod; 26. Material feeding wheel; 27. Tension spring; 28. Through groove; 29. ​​Collection box; 20. Funnel; 21. Positioning frame. Detailed Implementation

[0039] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0040] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] Please see Figures 1-12This invention provides a plasma cutting machine for processing rectangular tubes, including a machine tool 1. A support assembly 11 for reinforcing rectangular tubes is installed on one side of the top center of the machine tool 1. An X-axis transverse movement mechanism 12 is provided on the machine tool 1, and a movable frame 3 is installed at the moving end of the X-axis transverse movement mechanism 12. A Y-axis vertical movement mechanism 7 is installed at the top center of the inner wall of the movable frame 3. A lifting block 8 is installed at the moving end of the Y-axis vertical movement mechanism 7. A mounting frame 9 is movably mounted on the lifting block 8, and a buffer assembly is provided between the mounting frame 9 and the lifting block 8. The buffer assembly includes a through groove 23 opened on the lifting block 8, and a support seat 19 inserted into the through groove 23 is fixed on the inner wall of the mounting frame 9. Both sides of the top of the mounting bracket 9 are fitted with buffer springs 21 that are installed on the inner wall of the top of the through groove 23. A guide post 20 is fixed to the inner wall of the through groove 23, and a guide hole is provided on the support base 19 for the guide post 20 to pass through. An annular dust collection hood 10 is installed at the bottom of the mounting bracket 9, and a waste discharge pipe 17 is provided at the middle position of the bottom of the annular dust collection hood 10. A cleaning component 18 is provided on the inner wall of the annular dust collection hood 10. The cleaning component 18 includes a fixed base 1801 fixedly installed on the top of the other side of the annular dust collection hood 10, and a second connecting shaft is rotatably connected to the bottom of the fixed base 1801. Transmission gears 1803 are installed on both sides of the second connecting shaft, and the position of the transmission gears 1803 is higher than that of the second connecting shaft. The height of the feeding wheel 2203 is such that a first groove 1809 is provided on one side of the fixed base 1801, and an annular slide rail 1805 slides along the inner wall of the first groove 1809. A rotating ring 1804 is fixed to one side of the annular slide rail 1805, and multiple cleaning scrapers 1806 that fit against the inner wall of the annular dust collection hood 10 are installed on one side of the rotating ring 1804. A third connecting shaft is rotatably mounted on the fixed base 1801, and a transmission wheel is installed at one end of the third connecting shaft and one end of the second connecting shaft. A transmission belt 1802 is connected between the two transmission wheels. A driven gear 1808 is installed at the other end of the third connecting shaft. The outer wall of the rotating ring 1804 has evenly distributed... The second tooth groove 1807 meshes with the driven gear 1808, and the cutting assembly 6 is provided inside the annular dust collection hood 10 and on the movable frame 3. The cutting assembly 6 includes a plasma cutter body 601 mounted on the movable frame 3, and a mounting sleeve 603 is fixedly mounted on the top of the side of the annular dust collection hood 10 near the fixed frame 2201. A mounting tube 604 is fixedly mounted on the inner wall of the mounting sleeve 603. A connecting tube 602 is fixedly mounted on the top of the mounting tube 604 and on one side of the plasma cutter body 601. A cutting gun 605 is fixedly mounted on the bottom of the mounting tube 604. The cutting gun 605 is located at the top middle position inside the annular dust collection hood 10.

[0043] A ventilation assembly 15 is provided on one side of the mounting frame 9, and the ventilation assembly 15 is connected to the interior of the annular dust collection hood 10. The ventilation assembly 15 includes a circulating fan 1502 fixedly installed on the outer wall of one end of the mounting frame 9. An exhaust pipe 1501 inserted into the waste discharge pipe 17 is installed at the air inlet end of the circulating fan 1502, and an exhaust pipe 1503 inserted into the annular dust collection hood 10 is installed at the air outlet end of the circulating fan 1502. A filter screen 1504 is installed at the air inlet of the exhaust pipe 1501, and the top surface of the filter screen 1504, the top surface of the air inlet of the exhaust pipe 1501, and the bottom surface of the air outlet of the exhaust pipe 1503 all conform to the inner wall surface of the annular dust collection hood 10. Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the ventilation component 15 described above enables the waste residue to fall quickly and be collected in the collection box 24 along the waste discharge pipe 17. It also enables ventilation and cooling operations after cutting to reduce the temperature of the sparks during cutting and avoid safety issues.

[0044] A material feeding assembly 22 is fixed to the top of the annular dust collection hood 10 near the movable frame 3. The material feeding assembly 22 includes a fixed frame 2201 fixed to the annular dust collection hood 10. A telescopic rod 2202 is inserted into the inner wall of the fixed frame 2201. A tension spring 2204 is installed between the top of the telescopic rod 2202 and the top inner wall of the fixed frame 2201. A first connecting shaft is rotatably connected to the bottom of the telescopic rod 2202, and material feeding wheels 2203 are installed at both ends of the first connecting shaft. Figure 5 , Figure 6 and Figure 10 The material feeding assembly 22 used ensures that the material feeding wheel 2203 is always in contact with the surface of the square and rectangular tube. After the square and rectangular tube is cut, the material feeding wheel 2203 can be used to easily pull the square and rectangular tube off the original tube, which improves work efficiency.

[0045] In this invention, the support assembly 11 includes a support frame 1101 fixedly installed on one side of the top center of the machine tool 1. A threaded rod 1102 is rotatably connected to the inner wall of the support frame 1101. A forward and reverse motor 1104 for driving the threaded rod 1102 to rotate is fixedly installed at one end of the support frame 1101. A second support 1109 is screwed onto the threaded rod 1102. A second slide groove is opened at the bottom of both ends of the second support 1109. Transverse slide rails 1107 inserted into the second slide grooves are installed on the inner walls of both sides of the support frame 1101. A first support 1103 is fixedly installed on one side of the inner wall of the support frame 1101. A through hole for the threaded rod 1102 to pass through is opened at the bottom of the first support 1103. The inner wall of the first support 1103 and the second support 1109 are connected to each other. The inner wall of 109 is equipped with mounting rings 1106, and the inner walls of two mounting rings 1106 are rotatably connected to rotating rings 1110 via bearings. A four-jaw chuck 1105 is fixedly mounted on one side of each rotating ring 1110. The jaws of the four-jaw chuck 1105 are rotatably connected to equally spaced pulleys 1108. The inner wall of the first support 1103 and one side of one of the mounting rings 1106 have mounting grooves, and the inner wall of the mounting groove is rotatably connected to a drive gear 1112. The outer wall of the rotating ring 1110 has equally spaced first toothed grooves 1111 at its center, which mesh with the drive gear 1112. A drive motor 1113 for driving the drive gear 1112 is fixedly mounted on one side of the first support 1103. Figure 1 , Figure 2 , Figure 12 , Figure 13 ,and Figure 14 As shown, the screw rod 1102 is driven to rotate by the forward and reverse motor 1104, which allows the second support 1109 to move along the transverse slide rail 1107. In conjunction with the first support 1103, the distance between the two four-jaw chucks 1105 can be easily adjusted to accommodate square and rectangular tubes of different lengths. At the same time, the pulleys 1108 at the ends of the jaws of the four-jaw chuck 1105 can reduce friction with the surface of the square and rectangular tube. The drive motor 1113 drives the drive gear 1112 to rotate, causing the rotating ring 1110 and the four-jaw chuck 1105 to rotate, which facilitates multi-angle processing of the square and rectangular tube and improves the stability and efficiency of the processing.

[0046] In this invention, a support rod 14 is fixed to one side of the mounting frame 9, and a guide groove 16 is provided on the movable frame 3 for the support rod 14 to pass through. An infrared emitter 13 is fixedly installed at the bottom end of the support rod 14, and the infrared emitter 13 coincides with the center of the annular dust collection cover 10. A positioning frame 26 is fixedly installed on one side of another mounting ring 1106, and an infrared receiver is fixedly installed at the middle position of one side of the positioning frame 26. Figure 1 , Figure 2 and Figure 14By utilizing infrared transmission and reception, precise cutting positioning can be achieved, ensuring the accuracy of the cutting position.

[0047] In this invention, an equipment box 4 is fixedly installed on the inner wall of the machine tool 1, and waste discharge grooves 5 are evenly distributed on the top of both the equipment box 4 and the top of the machine tool 1. A funnel 25 is fixedly installed on the inner wall of the top of the equipment box 4, and a collection box 24 is magnetically installed on the inner wall of the equipment box 4. The collection box 24 is located at the outlet of the funnel 25. The bottom of the waste discharge pipe 17 passes through one of the waste discharge grooves 5 and extends into the funnel 25. Figure 1 and Figure 11 As shown, the waste residue inside the annular dust collection hood 10 is discharged into the funnel 25 through the waste discharge pipe 17. The collection box 24, which is magnetically installed on the inner wall of the equipment box 4, can easily collect the waste residue, which is convenient for subsequent processing and keeps the working environment clean.

[0048] In this invention, both the Y-axis vertical movement mechanism 7 and the X-axis horizontal movement mechanism 12 are mechanisms that move by rotating a lead screw driven by a motor. A controller 2 is installed on the equipment box 4, and the controller 2 is electrically connected to the plasma cutting machine body 601, the Y-axis vertical movement mechanism 7, the forward and reverse motor 1104, the drive motor 1113, the X-axis horizontal movement mechanism 12, the infrared emitter 13, the infrared receiver, and the circulating fan 1502. Figure 1 and Figure 2 As shown, automated control of the equipment has been achieved, making operation more convenient and precise, and improving production efficiency and processing quality.

[0049] In summary, the working principle of this invention is as follows: When in use, the user starts the forward and reverse motor 1104 in the support assembly 11, which drives the threaded rod 1102 to rotate. Since the threaded rod 1102 is screwed to the second support 1109, and the bottom of both ends of the second support 1109 are provided with second sliding grooves that cooperate with the transverse slide rail 1107, the second support 1109 will move along the transverse slide rail 1107 within the support frame 1101 under the drive of the threaded rod 1102. The distance between the second support 1109 and the first support 1103 is adjusted according to the length of the rectangular tube. Then, the rectangular tube is placed between the two four-jaw chucks 1105, and the rectangular tube is clamped and fixed by the jaws of the four-jaw chucks 1105. At this time, the pulley 1108 at the end of the jaws of the four-jaw chucks 1105 contacts the surface of the rectangular tube, which can reduce friction.

[0050] Next, the user uses the Y-axis vertical movement mechanism 7 to adjust the height of the annular dust collection hood 10, and simultaneously uses the infrared emitter 13 to emit infrared rays, which are received by the infrared receiver. Thus, the cutting position can be accurately determined through the emission and reception of infrared rays.

[0051] During cutting, the plasma cutter body 601 in the cutting assembly 6 and the drive motor 1113 in the support assembly 11 are started. The drive motor 1113 drives the drive gear 1112 to rotate. The drive gear 1112 meshes with the first tooth groove 1111 on the outer wall of the rotating ring 1110, thereby driving the rotating ring 1110 and the four-jaw chuck 1105 to rotate, realizing the rotation of the square and rectangular tube. At the same time, the plasma arc generated by the plasma cutter body 601 is transmitted to the cutting gun 605 through the connecting pipe 602 and the mounting pipe 604. The cutting gun 605 is used to cut the rotating square and rectangular tube. During the cutting process, the buffer spring 21 in the buffer assembly changes, driving the transmission gear 1803 to adapt to the surface changes of the square and rectangular tube.

[0052] During the cutting process, the annular dust collection hood 10 surrounds the cutting area, so that the waste is collected inside the annular dust collection hood 10. The circulating fan 1502 in the ventilation assembly 15 is activated, and the air inside the annular dust collection hood 10 is drawn from the waste discharge pipe 17 through the exhaust pipe 1501. The air is filtered through the filter screen 1504, and the waste is intercepted. The filtered air is discharged back into the annular dust collection hood 10 through the exhaust pipe 1503, realizing air circulation. At the same time, the waste on the square and rectangular tubes and the surface of the cutting assembly 6 is removed, effectively collecting the waste.

[0053] Furthermore, when the rectangular tube rotates, it uses its frictional force on the transmission gear 1803 to drive the cleaning component 18 to work. When the transmission gear 1803 rotates, it drives the second connecting shaft and the third connecting shaft to rotate through the transmission belt 1802, thereby driving the driven gear 1808 to rotate. In conjunction with the meshing action of the gear 1808 with the second tooth groove 1807 on the outer wall of the rotating ring 1804, it drives the cleaning scraper 1806 to rotate on the inner wall of the annular dust collection hood 10, thereby cleaning the waste residue attached to the inner wall of the annular dust collection hood 10 and maintaining the cleanliness and dust collection effect of the annular dust collection hood 10.

[0054] After the square and rectangular tube is cut, the material feeding assembly 22 comes into play. Under the action of the tension spring 2204, the telescopic rod 2202 keeps the material feeding wheel 2203 in contact with the surface of the square and rectangular tube. By pushing the material feeding wheel 2203, the cut square and rectangular tube can be pushed off the original tube, which is convenient for subsequent processing or handling.

[0055] Finally, the waste generated during the cutting process is discharged into the funnel 25 through the waste discharge pipe 17 and the waste discharge trough 5 on the top of the machine tool 1 and the equipment box 4, and finally falls into the collection box 24 magnetically attached to the inner wall of the equipment box 4, which facilitates centralized treatment of waste and keeps the working environment clean.

[0056] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this invention.

Claims

1. A plasma cutting machine for processing square and rectangular tubes, comprising a machine tool (1), characterized in that: A support assembly (11) is installed on one side of the top center of the machine tool (1). An X-axis transverse movement mechanism (12) is provided on the machine tool (1), and a movable frame (3) is installed on the moving end of the X-axis transverse movement mechanism (12). A Y-axis vertical movement mechanism (7) is installed at the top center of the inner wall of the movable frame (3). A lifting block (8) is installed on the moving end of the Y-axis vertical movement mechanism (7). A mounting frame (9) is movable on the lifting block (8), and a buffer assembly is provided between the mounting frame (9) and the lifting block (8). The bottom of the mounting bracket (9) is equipped with an annular dust collection hood (10), and a waste discharge pipe (17) is provided at the middle position of the bottom of the annular dust collection hood (10). A cleaning component (18) is provided on the inner wall of the annular dust collection hood (10). The cleaning component (18) includes a fixed seat (1801) fixedly installed on the top of the other side of the annular dust collection hood (10), and a second connecting shaft is rotatably connected to the bottom of the fixed seat (1801). Transmission gears (1803) are installed on both sides of the second connecting shaft. The transmission gear (1803) is positioned higher than the material feeding wheel (2203). A first groove (1809) is provided on one side of the fixed base (1801), and an annular slide rail (1805) slides along the inner wall of the first groove (1809). A rotating ring (1804) is fixed on one side of the annular slide rail (1805), and multiple cleaning scrapers (1806) that fit against the inner wall of the annular dust collection hood (10) are installed on one side of the rotating ring (1804). The fixed base (1801) rotates... A third connecting shaft is provided, and a transmission wheel is installed at one end of the third connecting shaft and at one end of the second connecting shaft. A transmission belt (1802) is connected between the two transmission wheels. A driven gear (1808) is installed at the other end of the third connecting shaft. The outer wall of the rotating ring (1804) is provided with equally spaced second tooth grooves (1807). The second tooth grooves (1807) mesh with the driven gear (1808). A cutting assembly (6) is provided inside the annular dust collection hood (10) and on the movable frame (3). A ventilation component (15) is provided on one side of the mounting frame (9), and the ventilation component (15) is connected to the interior of the annular dust collection hood (10). The ventilation component (15) includes a circulating fan (1502) fixedly installed on the outer wall of one end of the mounting frame (9). The air inlet end of the circulating fan (1502) is equipped with an exhaust pipe (1501) inserted into the waste discharge pipe (17), and the air outlet end of the circulating fan (1502) is equipped with an exhaust pipe (1503) inserted into the annular dust collection hood (10). The air inlet of the exhaust pipe (1501) is equipped with a filter screen (1504), and the top surface of the filter screen (1504), the top surface of the air inlet of the exhaust pipe (1501), and the bottom surface of the exhaust outlet of the exhaust pipe (1503) all match the inner wall surface of the annular dust collection hood (10). The annular dust collection hood (10) has a material feeding assembly (22) fixed on the top of the side near the movable frame (3). The material feeding assembly (22) includes a fixed frame (2201) fixed on the annular dust collection hood (10). A telescopic rod (2202) is inserted into the inner wall of the fixed frame (2201). A tension spring (2204) is installed on the top of the telescopic rod (2202) and the top inner wall of the fixed frame (2201). A first connecting shaft is rotatably connected to the bottom of the telescopic rod (2202), and material feeding wheels (2203) are installed at both ends of the first connecting shaft. The buffer assembly includes a through slot (23) opened on the lifting block (8), and a support seat (19) inserted into the through slot (23) is fixed on the inner wall of the mounting bracket (9). Buffer springs (21) are installed on both sides of the top of the support seat (19) and the top inner wall of the through slot (23). A guide post (20) is fixed on the inner wall of the through slot (23), and a guide hole is opened on the support seat (19) for the guide post (20) to pass through.

2. The plasma cutting machine for processing square and rectangular tubes according to claim 1, characterized in that: The cutting assembly (6) includes a plasma cutter body (601) mounted on the movable frame (3), and an mounting sleeve (603) is fixed on the top of the annular dust collection hood (10) near the fixed frame (2201). An mounting tube (604) is fixedly mounted on the inner wall of the mounting sleeve (603). A connecting tube (602) is fixedly mounted on the top of the mounting tube (604) and on one side of the plasma cutter body (601). A cutting gun (605) is fixedly mounted on the bottom of the mounting tube (604).

3. The plasma cutting machine for processing square and rectangular tubes according to claim 2, characterized in that: The support assembly (11) includes a support frame (1101) fixedly installed on one side of the top middle position of the machine tool (1), and a threaded rod (1102) is rotatably connected to the inner wall of the support frame (1101). A forward and reverse motor (1104) for driving the threaded rod (1102) to rotate is fixedly installed at one end of the support frame (1101). A second support (1109) is screwed onto the threaded rod (1102), and a second slide groove is opened at the bottom of both ends of the second support (1109). A transverse slide rail (1107) inserted into the second slide groove is installed on the inner walls of both sides of the support frame (1101). A first support (1103) is fixedly installed on one side of the inner wall of the support frame (1101), and a through hole for the threaded rod (1102) to pass through is opened at the bottom of the first support (1103). Mounting rings (1106) are installed on the inner walls of the first support (1103) and the second support (1109). The inner walls of the two mounting rings (1106) are rotatably connected to a rotating ring (1110) through a bearing. A four-jaw chuck (1105) is fixedly installed on one side of the rotating ring (1110). The jaws of the four-jaw chuck (1105) are rotatably connected to pulleys (1108) that are evenly distributed.

4. The plasma cutting machine for processing square and rectangular tubes according to claim 3, characterized in that: The inner wall of the first support (1103) and one side of one of the mounting rings (1106) are provided with mounting grooves, and the inner wall of the mounting groove is rotatably connected to a drive gear (1112). The outer wall of the rotating ring (1110) is provided with a first tooth groove (1111) distributed at equal intervals in the middle position. The first tooth groove (1111) meshes with the drive gear (1112). A drive motor (1113) for driving the drive gear (1112) to rotate is fixedly installed on one side of the first support (1103).

5. A plasma cutting machine for processing square and rectangular tubes according to claim 4, characterized in that: A support rod (14) is fixed on one side of the mounting bracket (9), and a guide groove (16) is provided on the movable frame (3) for the support rod (14) to pass through. An infrared transmitter (13) is fixedly installed at the bottom end of the support rod (14). The infrared transmitter (13) coincides with the center of the annular dust collection cover (10). A positioning frame (26) is fixedly installed on one side of another mounting ring (1106), and an infrared receiver is fixedly installed in the middle of one side of the positioning frame (26).

6. The plasma cutting machine for processing square and rectangular tubes according to claim 5, characterized in that: The inner wall of the machine tool (1) is fixedly installed with an equipment box (4), and the top of the equipment box (4) and the top of the machine tool (1) are provided with equally spaced waste discharge grooves (5). The inner wall of the top of the equipment box (4) is fixedly installed with a funnel (25), and the inner wall of the equipment box (4) is magnetically installed with a collection box (24). The collection box (24) is located at the outlet of the funnel (25). The bottom of the waste discharge pipe (17) passes through one of the waste discharge grooves (5) and extends into the funnel (25).

7. A plasma cutting machine for processing square and rectangular tubes according to claim 6, characterized in that: The device box (4) is equipped with a controller (2), and the controller (2) is electrically connected to the plasma cutting machine body (601), the Y-axis vertical movement mechanism (7), the forward and reverse motor (1104), the drive motor (1113), the X-axis horizontal movement mechanism (12), the infrared transmitter (13), the infrared receiver, and the circulating fan (1502).

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