Plasma cutting machine for square and rectangular pipe machining

Abstract

The invention relates to the technical field of cutting, in particular to a plasma cutting machine for square and rectangular pipe machining, which comprises a machine tool, a supporting assembly is mounted 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 mounted at the movable end of the X-axis transverse moving mechanism, and a Y-axis vertical moving mechanism is mounted in the middle of the top of the inner wall of the movable frame; a lifting block is mounted at the moving end of the Y-axis vertical moving mechanism, a mounting frame is movably arranged on the lifting block, and a buffering assembly is arranged between the mounting frame and the lifting block. According to the square and rectangular pipe cutting machine, multi-angle machining can be conveniently conducted on square and rectangular pipes, the machining stability and efficiency are improved, waste residues generated in the cutting process are collected, the situation that slag adheres to the surfaces of the square and rectangular pipes and diffuses into the working environment is avoided, the interior of the cutting machine is conveniently cleaned, the working environment is clean, normal use is guaranteed, and the working efficiency is improved. The square and rectangular pipe can be conveniently pulled down from an original pipe, the effect of convenient stripping is achieved, manual intervention is not needed, and operation is convenient.

Description

Technical Field

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

[0002] Plasma cutting is a processing method that uses the heat of a high-temperature plasma arc to partially or partially melt (and evaporate) the metal at the cut of the workpiece, and uses the momentum of high-speed plasma to remove the molten metal to form a cut. Plasma cutting machines can cut various metals that are difficult to cut with oxygen cutting with different working gases, especially for non-ferrous metals. Its main advantages are that when cutting metals with small thickness, plasma cutting has a fast speed, a smooth cutting surface, small thermal deformation, and almost no heat-affected zone. Plasma cutting machines are widely used in various industries such as automobiles, chemical machinery, engineering machinery, and steel structures. At present, plasma cutting machines are often used to cut square tube materials used in many industries. However, during the cutting process, the high-temperature plasma arc melts the metal material, and the partially melted metal will form slag. These slags usually have irregular shapes, and their main components are the oxides of the cut metal and some incompletely melted metal particles. These slags will adhere to the surface of the square tube and the cutting machine, which is difficult to clean, affecting normal use.

[0003] In order to solve the problem that the existing plasma cutting machine is difficult to clean, after searching, a fully automatic square tube cutting machine with the authorization announcement number CN116393838B is found, which relates to the technical field of cutting machines. The fully automatic square tube cutting machine comprises a fixing frame, a groove is provided on the upper side of the fixing frame, a sliding rod is fixedly connected to the inner wall of the groove, a slider is slidably connected to the outer wall of the sliding rod, a supporting pile is fixedly connected to the upper surface of the slider, a threaded hole is provided on the slider that runs through the upper and lower parts, the inner wall of the threaded hole is threadedly connected to a limiting pin, a mounting hole is provided on the upper part of the supporting pile, an extrusion block is inserted into the inner wall of the mounting hole, one end of the extrusion block is fixedly connected to a first spring, and one end of the first spring is fixedly connected to the outer wall of the supporting pile. The fully automatic square tube cutting machine is provided with a fan, an air duct, and four fixing blocks, so that the device can blow a large amount of airflow to the surface of the square tube in a relatively narrow space, so that the airflow cleans the surface of the square tube, thereby preventing a large amount of impurities from adhering to the clamping block.

[0004] Based on the above search, the existing plasma cutting machine can solve the problem of difficult cleaning. However, during the cutting process, if some smaller and thinner square tubes are cut, when the cutting is completed, the cut part may fall off from the tube due to its own gravity or slight external force (such as residual force of airflow), which is similar to direct material removal; but if it is a larger and heavier square tube, it will generally not fall off directly after cutting, and it may need to be separated from the tube by manual action, making it inconvenient to operate. Therefore, a plasma cutting machine for square tube processing is proposed to improve the above problem. 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 tubes generally cannot be directly removed after cutting, and may need to be separated from the tube by manual action, making the operation inconvenient.

[0006] In order to solve the above problems, the present invention provides a plasma cutting machine for processing square and rectangular tubes, comprising a machine tool, a support assembly is installed on one side in the middle of the top of the machine tool, an X-axis lateral movement mechanism is arranged on the machine tool, and a movable frame is installed on the movable end of the X-axis lateral movement mechanism, a Y-axis vertical movement mechanism is installed at the middle of the top of the inner wall of the movable frame, a lifting block is installed on the movable end of the Y-axis vertical movement 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, an annular dust collecting cover is installed at the bottom of the mounting frame, and a waste discharge pipe is arranged at the middle position of the bottom of the annular dust collecting cover, a cleaning assembly is arranged on the inner wall of the annular dust collecting cover, and a cutting assembly is arranged inside the annular dust collecting cover and on the movable frame;

[0007] A ventilation assembly is provided on one side of the mounting frame, and the ventilation assembly is communicated with the interior of the annular dust collecting hood;

[0008] A material-prying assembly is fixed to the top of one side of the annular dust hood close to the movable frame, and the material-prying assembly includes a fixed frame fixed on the annular dust hood, a telescopic rod is inserted into the inner wall of the fixed frame, a tensioning spring is installed on the top of the telescopic rod and the top inner wall of the fixed frame, a first connecting shaft is rotated at the bottom of the telescopic rod, and material-prying wheels are installed at both ends of the first connecting shaft.

[0009] The present invention is further configured such that the buffer assembly includes a through slot opened on the lifting block, and a support seat inserted into the through slot is fixed on the inner wall of the mounting frame, 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 column is fixed on the inner wall of the through slot, and a guide hole for the guide column to pass through is opened on the support seat.

[0010] The present invention is further configured as follows, the cleaning assembly includes a fixed seat fixedly mounted on the top of the other side of the annular dust collecting hood, and the bottom of the fixed seat is rotatably connected to the second connecting shaft, and transmission gears are installed on both sides of the second connecting shaft, and the position of the transmission gear is higher than the height of the paddle wheel, a first slide groove is opened on one side of the fixed seat, and an annular slide rail is slidably provided on the inner wall of the first slide groove, a swivel is fixed on one side of the annular slide rail, and a plurality of cleaning scrapers that are attached to the inner wall of the annular dust collecting hood are installed on one side of the swivel, a third connecting shaft is rotatably arranged on the fixed seat, 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 is connected for transmission between the two transmission wheels, and a driven gear is installed on the other end of the third connecting shaft, and a second tooth groove distributed at an equal distance is opened on the outer wall of the swivel, and the second tooth groove is meshed with the driven gear.

[0011] The present invention is further configured such that the ventilation assembly includes a circulation fan fixedly mounted on the outer wall of one end of the mounting frame, and the air inlet end of the circulation fan is equipped with an exhaust duct plugged into the exhaust pipe, and the air exhaust end of the circulation fan is equipped with an exhaust duct plugged into the annular dust hood, and the air inlet of the exhaust duct is equipped with a filter, and the top surface of the filter, the top surface of the air inlet of the exhaust duct and the bottom surface of the air outlet of the exhaust duct all coincide with the inner wall surface of the annular dust hood.

[0012] The present invention is further configured such that the cutting assembly includes a plasma cutting machine body installed on the movable frame, and a mounting sleeve is fixed to the top of one side of the annular dust collecting hood close to the fixed frame, a mounting tube is fixedly installed on the inner wall of the mounting sleeve, a connecting tube is fixedly installed at the top of the mounting tube and one side of the plasma cutting machine body, and a cutting gun is fixedly installed at the bottom end of the mounting tube.

[0013] The present invention is further configured as follows: the support assembly includes a support frame fixedly installed on one side of the middle position of the top of the machine tool, and the inner wall of the support frame is rotatably connected to a threaded rod, one end of the support frame is fixedly installed with a forward and reverse motor for driving the threaded rod to rotate, a second support seat is screwed on the threaded rod, and second slide grooves are provided at the bottoms of both ends of the second support seat, and transverse slide rails inserted in the second slide grooves are installed on the inner walls of both sides of the support frame, a first support seat 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 provided at the bottom of the first support seat, mounting rings are installed on the inner walls of the first support seat and the inner walls of the second support seat, and the inner walls of the two mounting rings are rotatably connected to rotating circles through bearings, a four-jaw chuck is fixedly installed on one side of the rotating circle, and the ends of the jaws of the four-jaw chuck are rotatably connected to pulleys distributed at equal distances.

[0014] The present invention is further configured such that an installation groove is provided on the inner wall of the first support seat and one side of one of the installation circles, and the inner wall of the installation groove is rotatably connected to a driving gear, and a first tooth groove is provided at an evenly spaced distribution in the middle position of the outer wall of the rotating circle, and the first tooth groove is meshed with the driving gear, and a driving motor for driving the driving gear to rotate is fixedly installed on one side of the first support seat.

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

[0016] The present invention is further configured such that an equipment box is fixedly installed on the inner wall of the machine tool, and waste discharge grooves equidistantly distributed are provided on the top of the equipment box and the top of the machine tool, a funnel is fixedly installed on the top inner wall of the equipment box, and a collection box is magnetically installed on the inner wall of the equipment box, the collection box is located at the discharge 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 transmitter, the infrared receiver, and the circulating fan.

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

[0019] 1. The support assembly can be used to easily adjust the distance between the two four-claw chucks to adapt to square tubes of different lengths. At the same time, the pulley at the end of the four-claw chuck claw can reduce the friction with the surface of the square tube. The drive motor drives the drive gear to rotate, so that the rotating circle and the four-claw chuck rotate, which is convenient for multi-angle processing of the square tube, improves the processing stability and efficiency, and realizes precise cutting positioning under the action of the Y-axis vertical movement mechanism, infrared transmitter and infrared receiver to ensure the accuracy of the cutting position;

[0020] 2. The annular dust hood can collect the waste residue generated during the cutting process, and drive the cleaning component to rotate during the rotation of the square tube, thereby driving the cleaning scraper to rotate in the annular dust hood, and can clean the inner wall of the annular dust hood to prevent waste residue and smoke from adhering to ensure the dust collection effect. The circulating fan, exhaust pipe and exhaust pipe in the ventilation component are used to realize air circulation in the annular dust hood, blow the waste residue out along the exhaust pipe, and realize the efficient slag discharge function, so as to prevent the slag from adhering to the surface of the square tube and spreading to the working environment, so as to facilitate the cleaning of the inside of the cutting machine, make the working environment clean and ensure normal use;

[0021] 3. Through the set material-push assembly, the material-push wheel can always be in contact with the surface of the square tube under the action of the tensioning spring. After the square tube is cut, the tensioning force of the tensioning spring causes the material-push wheel to apply pressure to the square tube, so that the square tube can be easily pushed off the original tube, achieving the effect of easy material removal. There is no need for manual separation operation, which is easy to operate and improves work efficiency.

[0022] 4. By providing a funnel on the top of the equipment box, when the waste discharge pipe discharges the waste residue in the annular dust collecting hood into the funnel, the waste residue can be conveniently collected in the collection box for subsequent processing, thereby keeping the working environment clean. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0025] Figure 3 It is a schematic diagram of the X-axis traverse mechanism and guide groove structure of a plasma cutting machine for processing square and rectangular tubes of the present invention;

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

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

[0028] Figure 6 It is a front cross-sectional view of an annular dust collecting cover of a plasma cutting machine for processing square and rectangular tubes of the present invention;

[0029] Figure 7 It is a side sectional view of an annular dust collecting cover of a plasma cutting machine for processing square and rectangular tubes of the present invention;

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

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

[0032] Fig.10 It is a schematic structural diagram of a material shifting assembly of a plasma cutting machine for processing square and rectangular tubes of the present invention;

[0033] Fig.11 It is a schematic diagram of the collecting box and funnel structure of a plasma cutting machine for processing square and rectangular tubes of the present invention;

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

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

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

[0037] Description of the numbers in the figure:

[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 cover; 11. Support assembly; 1101. Support frame; 1102. Threaded rod; 1103. First support seat; 1104. Forward and reverse motor; 1105. Four-claw chuck; 1106. Mounting ring; 1107. Horizontal slide rail; 1108. Pulley; 1109. Second support seat; 1110. Rotating circle; 1111. First tooth groove; 1112. Driving gear; 1113. Driving motor; 12. X-axis lateral movement mechanism; 13. Infrared Line launcher; 14, support rod; 15, ventilation assembly; 1501, exhaust pipe; 1502, circulation fan; 1503, exhaust pipe; 1504, filter screen; 16, guide groove; 17, waste pipe; 18, cleaning assembly; 1801, fixed seat; 1802, transmission belt; 1803, transmission gear; 1804, swivel; 1805, annular slide rail; 1806, cleaning scraper; 1807, second tooth groove; 1808, driven gear; 1809, first slide groove; 19, support seat; 20, guide column; 21, buffer spring; 22, material dispensing assembly; 2201, fixed frame; 2202, telescopic rod; 2203, material dispensing wheel; 2204, tension spring; 23, through groove; 24, collection box; 25, funnel; 26, positioning frame. DETAILED DESCRIPTION

[0039] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0040] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] See also Figure 1-Figure 12The present invention provides a plasma cutting machine for processing square and rectangular tubes, comprising a machine tool 1, a support assembly 11 for reinforcing square and rectangular tubes is installed on one side of the middle of the top of the machine tool 1, an X-axis lateral movement mechanism 12 is arranged on the machine tool 1, and a movable frame 3 is installed on the movable end of the X-axis lateral movement mechanism 12, a Y-axis vertical movement mechanism 7 is installed at the middle of the top of the inner wall of the movable frame 3, a lifting block 8 is installed on the movable end of the Y-axis vertical movement mechanism 7, a mounting frame 9 is movably arranged on the lifting block 8, and a buffer assembly is arranged between the mounting frame 9 and the lifting block 8, the buffer assembly comprises a through slot 23 opened on the lifting block 8, and a support seat 19 inserted in the through slot 23 is fixed on the inner wall of the mounting frame 9, and the support seat 1 Buffer springs 21 are installed on both sides of the top of the through groove 23, guide posts 20 are fixed to the inner wall of the through groove 23, and guide holes for the guide posts 20 to pass through are opened on the support seat 19. An annular dust cover 10 is installed at the bottom of the mounting frame 9, and a waste pipe 17 is arranged at the middle position of the bottom of the annular dust cover 10. A cleaning assembly 18 is arranged on the inner wall of the annular dust cover 10. The cleaning assembly 18 includes a fixed seat 1801 fixedly installed on the top of the other side of the annular dust cover 10, and the bottom of the fixed seat 1801 is rotatably connected to a second connecting shaft, and transmission gears 1803 are installed on both sides of the second connecting shaft, and the position of the transmission gear 1803 is higher than The height of the feeding wheel 2203, a first slide groove 1809 is provided on one side of the fixed seat 1801, and an annular slide rail 1805 is slidably provided on the inner wall of the first slide groove 1809, a rotating ring 1804 is fixed on one side of the annular slide rail 1805, and a plurality of cleaning scrapers 1806 that are attached to the inner wall of the annular dust collecting cover 10 are installed on one side of the rotating ring 1804, a third connecting shaft is rotatably provided on the fixed seat 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, and the outer wall of the rotating ring 1804 is provided with equidistantly distributed The second tooth groove 1807 is meshed with the driven gear 1808, and a cutting assembly 6 is arranged inside the annular dust collecting cover 10 and on the movable frame 3, the cutting assembly 6 includes a plasma cutting machine body 601 installed on the movable frame 3, and a mounting sleeve 603 is fixed to the top of one side of the annular dust collecting cover 10 close to the fixed frame 2201, a mounting tube 604 is fixedly installed on the inner wall of the mounting sleeve 603, a connecting tube 602 is fixedly installed at the top of the mounting tube 604 and one side of the plasma cutting machine body 601, a cutting gun 605 is fixedly installed at the bottom end of the mounting tube 604, and the cutting gun 605 is located at the top middle position in the annular dust collecting cover 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 hood 10. The ventilation assembly 15 includes a circulation fan 1502 fixedly mounted on the outer wall of one end of the mounting frame 9, and an exhaust pipe 1501 plugged into the exhaust pipe 17 is installed at the air inlet end of the circulation fan 1502, and an exhaust pipe 1503 plugged into the annular dust hood 10 is installed at the exhaust end of the circulation fan 1502, and 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 exhaust outlet of the exhaust pipe 1503 all coincide with the inner wall surface of the annular dust hood 10, as shown in FIG. Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the above-mentioned ventilation assembly 15 can make the waste slag fall quickly and fall into the collection box 24 along the waste discharge pipe 17 for collection, and can perform ventilation and cooling operations after cutting to reduce the spark temperature during cutting and avoid safety problems;

[0044] A material-pickup assembly 22 is fixed to the top of one side of the annular dust hood 10 close to the movable frame 3, and the material-pickup assembly 22 includes a fixed frame 2201 fixed to the annular dust hood 10, a telescopic rod 2202 is inserted into the inner wall of the fixed frame 2201, a tensioning spring 2204 is installed at the top of the telescopic rod 2202 and the inner wall of the top of the fixed frame 2201, a first connecting shaft is rotated at the bottom of the telescopic rod 2202, and material-pickup wheels 2203 are installed at both ends of the first connecting shaft, as shown in FIG. Figure 5 , Figure 6 and Fig.10 By adopting the above-mentioned material shifting assembly 22, the material shifting wheel 2203 can always be in contact with the surface of the square tube. After the cutting of the square tube is completed, the square tube can be easily shifted off from the original tube by the material shifting wheel 2203, thereby improving work efficiency.

[0045] In the present invention, the support assembly 11 includes a support frame 1101 fixedly installed on one side of the middle position of the top of the machine tool 1, and the inner wall of the support frame 1101 is rotatably connected to a threaded rod 1102, one end of the support frame 1101 is fixedly installed with a forward and reverse motor 1104 for driving the threaded rod 1102 to rotate, a second support seat 1109 is screwed on the threaded rod 1102, and the bottoms of both ends of the second support seat 1109 are provided with second slide grooves, and the inner walls of both sides of the support frame 1101 are installed with transverse slide rails 1107 inserted in the second slide grooves, a first support seat 1103 is fixedly installed on one side of the inner wall of the support frame 1101, and the bottom of the first support seat 1103 is provided with a through hole for the threaded rod 1102 to pass through, and the inner wall of the first support seat 1103 and the second support seat 1109 are fixedly installed with a first support seat 1103. The inner wall of each support 1109 is provided with a mounting ring 1106, and 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 mounted on one side of the rotating ring 1110, and the ends of the claws of the four-jaw chuck 1105 are rotatably connected to pulleys 1108 distributed at equal distances, the inner wall of the first support seat 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 driving gear 1112, and the middle position of the outer wall of the rotating ring 1110 is provided with first tooth grooves 1111 distributed at equal distances, the first tooth grooves 1111 are meshed with the driving gear 1112, and a driving motor 1113 for driving the driving gear 1112 to rotate is fixedly mounted on one side of the first support seat 1103, as shown in FIG. Figure 1 , Figure 2 , Fig.12 , Fig.13 ,and Fig.14 As shown, the threaded rod 1102 is driven to rotate by the forward and reverse motor 1104, so that the second support seat 1109 can be moved along the horizontal slide rail 1107. In cooperation with the first support seat 1103, the distance between the two four-jaw chucks 1105 can be conveniently adjusted to adapt to square tubes of different lengths. At the same time, the pulley 1108 at the end of the claws of the four-jaw chuck 1105 can reduce the friction with the surface of the square tube, and the driving motor 1113 drives the driving gear 1112 to rotate, so that the rotating circle 1110 and the four-jaw chuck 1105 rotate, which is convenient for multi-angle processing of the square tube and improves the stability and efficiency of the processing.

[0046] In the present invention, a support rod 14 is fixed to one side of the mounting frame 9, and a guide groove 16 for the support rod 14 to pass through is provided on the movable frame 3, an infrared transmitter 13 is fixedly installed at the bottom end of the support rod 14, and the infrared transmitter 13 coincides with the center of the annular dust collecting 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, such as Figure 1 , Figure 2 and Fig.14, using infrared emission and reception, precise cutting positioning can be achieved to ensure the accuracy of the cutting position.

[0047] In the present invention, an equipment box 4 is fixedly installed on the inner wall of the machine tool 1, and waste discharge slots 5 are equidistantly arranged on the top of the equipment box 4 and the top of the machine tool 1, a funnel 25 is fixedly installed on the top inner wall of the equipment box 4, and a collection box 24 is installed on the inner wall of the equipment box 4 by magnetic attraction, and the collection box 24 is located at the discharge outlet of the funnel 25, and the bottom of the waste discharge pipe 17 passes through one of the waste discharge slots 5 and extends into the funnel 25, as shown in FIG. Figure 1 and Fig.11 As shown, the waste residue in the annular dust collecting cover 10 is discharged into the funnel 25 by means of the waste discharge pipe 17, and the collection box 24 magnetically mounted on the inner wall of the equipment box 4 can conveniently collect the waste residue for subsequent processing and keep the working environment clean.

[0048] In the present invention, the Y-axis vertical movement mechanism 7 and the X-axis horizontal movement mechanism 12 are both mechanisms in which the motor drives the lead screw to rotate and move. 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. Figure 1 and Figure 2 As shown, the automatic control of the equipment is realized, the operation is more convenient and accurate, and the production efficiency and processing quality are improved.

[0049] In summary, the working principle of the present invention is as follows: when in use, the user starts the forward and reverse motor 1104 in the support assembly 11 to drive the threaded rod 1102 to rotate. Since the threaded rod 1102 is screwed with the second support seat 1109, and the second slide grooves are provided at the bottom of both ends of the second support seat 1109 and cooperate with the transverse slide rail 1107, the second support seat 1109 will move along the transverse slide rail 1107 in the support frame 1101 under the drive of the threaded rod 1102. According to the length of the square tube, the distance between the second support seat 1109 and the first support seat 1103 is adjusted, and then the square tube is placed between the two four-claw chucks 1105, and the square tube is clamped and fixed by the claws of the four-claw chuck 1105. At this time, the pulley 1108 at the end of the claw of the four-claw chuck 1105 is in contact with the surface of the square 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 collecting cover 10, and simultaneously uses the infrared transmitter 13 to transmit infrared rays, and receives the infrared rays through the infrared receiver, so that the cutting position can be accurately determined through the transmission and reception of infrared rays;

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

[0052] During the cutting process, the annular dust hood 10 surrounds the cutting area so that the waste residue is collected in the annular dust hood 10, and the circulating fan 1502 in the ventilation assembly 15 is started, and the air in the annular dust hood 10 is extracted from the exhaust pipe 17 by using the exhaust pipe 1501, and the air is filtered through the filter 1504, and the waste residue is intercepted. The filtered air is discharged back into the annular dust hood 10 through the exhaust pipe 1503 to realize air circulation, and at the same time, the waste residue on the surface of the square tube and the cutting assembly 6 is removed, and the waste residue is effectively collected;

[0053] Furthermore, when the square tube rotates, the friction force of the square tube on the transmission gear 1803 is used to drive the cleaning assembly 18 to work. When the transmission gear 1803 rotates, the second connecting shaft and the third connecting shaft are driven to rotate through the transmission belt 1802, thereby driving the driven gear 1808 to rotate, and the meshing action of the driven gear 1808 with the second tooth groove 1807 on the outer wall of the rotating ring 1804 drives the cleaning scraper 1806 to rotate on the inner wall of the annular dust collecting cover 10, thereby cleaning the waste residue attached to the inner wall of the annular dust collecting cover 10, and maintaining the cleaning and dust collecting effect of the annular dust collecting cover 10;

[0054] When the cutting of the square tube is completed, the material shifting assembly 22 comes into play, and the telescopic rod 2202, under the action of the tension spring 2204, makes the material shifting wheel 2203 always contact with the surface of the square tube. By shifting the material shifting wheel 2203, the cut square tube can be shifted off from the original tube material, which is convenient for subsequent processing or transportation.

[0055] Finally, the waste residue 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, so as to facilitate the centralized treatment of the waste residue and keep the working environment clean.

[0056] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present 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 in the middle of the top of the machine tool (1); an X-axis lateral movement mechanism (12) is provided on the machine tool (1); a movable frame (3) is installed on the movable end of the X-axis lateral movement mechanism (12); a Y-axis vertical movement mechanism (7) is installed in the middle of the top of the inner wall of the movable frame (3); a lifting block (8) is installed on the movable end of the Y-axis vertical movement mechanism (7); a mounting frame (9) is movably provided on the lifting block (8); a buffer assembly is provided between the mounting frame (9) and the lifting block (8); an annular dust collecting cover (10) is installed at the bottom of the mounting frame (9); a waste discharge pipe (17) is provided at the middle position of the bottom of the annular dust collecting cover (10); a cleaning assembly (18) is provided on the inner wall of the annular dust collecting cover (10); and a cutting assembly (6) is provided inside the annular dust collecting cover (10) and on the movable frame (3); A ventilation assembly (15) is provided on one side of the mounting frame (9), and the ventilation assembly (15) is communicated with the interior of the annular dust collecting hood (10); A material-discharging assembly (22) is fixed to the top of one side of the annular dust hood (10) close to the movable frame (3), and the material-discharging assembly (22) comprises a fixed frame (2201) fixed to the annular dust hood (10), a telescopic rod (2202) is inserted into the inner wall of the fixed frame (2201), a tensioning spring (2204) is installed at the top of the telescopic rod (2202) and the inner wall of the top of the fixed frame (2201), a first connecting shaft is rotatably arranged at the bottom of the telescopic rod (2202), and material-discharging wheels (2203) are installed at both ends of the first connecting shaft.

2. The plasma cutting machine for square and rectangular tube processing according to claim 1, characterized in that: The buffer assembly comprises a through slot (23) provided 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 frame (9), buffer springs (21) are installed on both sides of the top of the support seat (19) and the inner wall of the top of the through slot (23), a guide column (20) is fixed on the inner wall of the through slot (23), and a guide hole for the guide column (20) to pass through is provided on the support seat (19).

3. The plasma cutting machine for processing square and rectangular tubes according to claim 1, characterized in that: The cleaning assembly (18) comprises a fixing seat (1801) fixedly mounted on the top of the other side of the annular dust collecting cover (10), and the bottom of the fixing seat (1801) is rotatably connected to a second connecting shaft, and transmission gears (1803) are installed on both sides of the second connecting shaft, and the position of the transmission gear (1803) is higher than the height of the feeding wheel (2203), and a first slide groove (1809) is opened on one side of the fixing seat (1801), and an annular slide rail (1805) is slidably disposed on the inner wall of the first slide groove (1809), and a rotating ring (1805) is fixed on one side of the annular slide rail (1805). 4), a plurality of cleaning scrapers (1806) are mounted on one side of the rotating ring (1804) and are attached to the inner wall of the annular dust collecting cover (10); a third connecting shaft is rotatably mounted on the fixed seat (1801), and a transmission wheel is mounted on 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 mounted on the other end of the third connecting shaft; and a second tooth groove (1807) is arranged on the outer wall of the rotating ring (1804) and is equidistantly distributed, and the second tooth groove (1807) is meshed with the driven gear (1808).

4. The plasma cutting machine for processing square and rectangular tubes according to claim 1, characterized in that: The ventilation assembly (15) comprises a circulation fan (1502) fixedly mounted on the outer wall of one end of the mounting frame (9), and an exhaust pipe (1501) plugged into the exhaust pipe (17) is installed at the air inlet end of the circulation fan (1502), and an exhaust pipe (1503) plugged into the annular dust collecting hood (10) is installed at the air outlet of the circulation fan (1502), and 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) are all consistent with the inner wall surface of the annular dust collecting hood (10).

5. The plasma cutting machine for processing square and rectangular tubes according to claim 4, characterized in that: The cutting assembly (6) comprises a plasma cutting machine body (601) mounted on the movable frame (3), and a mounting sleeve (603) is fixed to the top of one side of the annular dust collecting cover (10) close to 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 one side of the plasma cutting machine body (601), and a cutting gun (605) is fixedly mounted on the bottom end of the mounting tube (604).

6. The plasma cutting machine for processing square and rectangular tubes according to claim 5, characterized in that: The support assembly (11) comprises a support frame (1101) fixedly mounted on one side of the middle position of the top of the machine tool (1), and the inner wall of the support frame (1101) is rotatably connected to a threaded rod (1102), one end of the support frame (1101) is fixedly mounted with a forward and reverse motor (1104) for driving the threaded rod (1102) to rotate, a second support seat (1109) is screwed onto the threaded rod (1102), and the bottoms of both ends of the second support seat (1109) are provided with second slide grooves, and the inner walls of both sides of the support frame (1101) are installed with transverse slide rails (1107) inserted into the second slide grooves, A first support seat (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 seat (1103), and the inner wall of the first support seat (1103) and the inner wall of the second support seat (1109) are both installed with mounting rings (1106), and the inner walls of the two mounting rings (1106) are rotatably connected to a rotating ring (1110) through bearings, and a four-jaw chuck (1105) is fixedly installed on one side of the rotating ring (1110), and the ends of the jaws of the four-jaw chuck (1105) are rotatably connected to pulleys (1108) distributed at equal distances.

7. The plasma cutting machine for processing square and rectangular tubes according to claim 6, characterized in that: The inner wall of the first support seat (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 driving gear (1112). The middle position of the outer wall of the rotating circle (1110) is provided with first tooth grooves (1111) distributed at equal distances, and the first tooth grooves (1111) are meshed with the driving gear (1112). A driving motor (1113) for driving the driving gear (1112) to rotate is fixedly installed on one side of the first support seat (1103).

8. The plasma cutting machine for processing square and rectangular tubes according to claim 7, characterized in that: A support rod (14) is fixed on 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 transmitter (13) is fixedly installed on the bottom end of the support rod (14), and the infrared transmitter (13) coincides with the center of the annular dust collecting hood (10). A positioning frame (26) is fixedly installed on one side of the other mounting ring (1106), and an infrared receiver is fixedly installed in the middle position of one side of the positioning frame (26).

9. The plasma cutting machine for processing square and rectangular tubes according to claim 8, characterized in that: An equipment box (4) is fixedly mounted on the inner wall of the machine tool (1), and waste discharge grooves (5) are equidistantly arranged on the top of the equipment box (4) and the top of the machine tool (1). A funnel (25) is fixedly mounted on the inner wall of the top of the equipment box (4), and a collection box (24) is mounted on the inner wall of the equipment box (4) by magnetic attraction. The collection box (24) is located at the discharge outlet of the funnel (25), and the bottom of the waste discharge pipe (17) passes through one of the waste discharge grooves (5) and extends into the funnel (25).

10. The plasma cutting machine for processing square and rectangular tubes according to claim 9, characterized in that: The equipment 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 motors (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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