A ring-cutting laser tube cutting machine and control method thereof

Abstract

The present invention relates to the technical field of tube cutting machines, and in particular to a circular cutting laser tube cutting machine and a control method thereof. It comprises an electric slide, on which a tube body moving unit is slidably connected, a circular cutting seat is provided at one end of the electric slide, and the circular cutting seat comprises a circular cutting cylinder, which is a cylindrical structure, and the central axis of the circular cutting cylinder coincides with the central axis of the rotating cylinder in the tube body moving unit; a laser cutting head is provided on the inner wall of the top of the circular cutting cylinder, and a port processing unit is provided on one side of the laser cutting head; the port processing unit comprises a splash guard; the splash guard is elastically mounted on the inner wall of the circular cutting cylinder; the splash guard is arranged as a block structure with a fan-shaped cross section; a central convex strip is installed at the center of the bottom of the splash guard, and a ceramic heating plate is fixedly installed at the bottom of the central convex strip. While meeting the requirements of automatic circular cutting, the present invention also meets the functions of automatic edge grinding and automatic collection of waste chips.

Description

Technical Field

[0001] The invention belongs to the technical field of tube cutting machines, and in particular relates to a ring-cutting laser tube cutting machine and a control method thereof. Background Art

[0002] In the production and processing of metal pipes, a pipe cutting machine is required to cut the corresponding length according to the requirements. In order to ensure the cutting quality and cutting efficiency, the existing pipe cutting machines mostly use circular cutting type laser pipe cutting machines.

[0003] Since the circular cutting method is adopted, the end of the pipe body after cutting is often not smooth and flat, and an additional edge grinding process is required, which increases the working time and reduces the working efficiency. Summary of the invention

[0004] In view of the above problems, the present invention provides a circular cutting laser tube cutting machine, comprising an electric slide, a tube body motion unit is slidably connected to the electric slide, a circular cutting seat is provided at one end of the electric slide, the circular cutting seat comprises a circular cutting cylinder, the circular cutting cylinder is a cylindrical structure, the central axis of the circular cutting cylinder coincides with the central axis of the rotating cylinder in the tube body motion unit; a laser cutting head is provided on the inner wall of the top of the circular cutting cylinder, and a port processing unit is provided on one side of the laser cutting head;

[0005] The port processing unit includes a splashproof seat; the splashproof seat is elastically mounted on the inner wall of the annular cutting cylinder; the splashproof seat is arranged as a block structure with a fan-shaped cross section; a middle convex strip is installed at the center of the bottom of the splashproof seat, and a ceramic heating plate is fixedly installed at the bottom of the middle convex strip; a grinding knife strip is movably clamped at the bottom of the ceramic heating plate, and the side cross section of the grinding knife strip is arranged as a fan-shaped plate structure; a chip reversing hole is provided at one end of the grinding knife strip; a plurality of groups of chip shaving mechanisms are evenly distributed on the side wall of the grinding knife strip; two groups of arc surfaces are symmetrically arranged on the two side walls of the middle convex strip; two groups of flue gas raceways are symmetrically arranged on the outer wall of the bottom of the splashproof seat with the central axis of the middle convex strip as the center, and the inner wall of the flue gas raceway is connected to a group of arc surfaces on the same side; a smoke inlet is provided on the inner wall of the flue gas raceway.

[0006] Furthermore, the shaving mechanism includes a razor mounting plate; the razor mounting plate is installed on the side wall of the grinding blade, and an inner cavity hole is opened on the razor mounting plate, and the other side of the inner cavity hole is connected to the chip collection chamber; a thermal conductive grinding angle is fixedly installed at the edge of one end of the razor mounting plate close to the laser cutting head, and a razor body is installed at the edge of one end of the razor mounting plate away from the laser cutting head, and the other end of the razor body extends toward the side of the thermal conductive grinding angle.

[0007] Furthermore, a group of second openings are provided at the center of both ends of the circular cutting cylinder, and an anti-touch plate is installed on the second opening, and the anti-touch plate is a circular ring structure; the central axes of the anti-touch plate, the circular cutting cylinder and the rotating cylinder all coincide; an electric lifting platform is provided on the top of the circular cutting cylinder, and a laser cutting control system is fixedly installed on the bottom of the electric lifting platform.

[0008] Furthermore, the bottom of the laser cutting control system extends into the cavity of the circular cutting cylinder, and is equipped with a laser cutting head, and an edge grinding seat is fixedly installed on one side of the laser cutting head.

[0009] Furthermore, the tube body motion unit includes a tube body rotating seat; the tube body rotating seat is installed on the output end of the electric slide, a servo motor is installed in the tube body rotating seat, and a transmission gear is transmission-connected to the output end of the servo motor.

[0010] Furthermore, a rotating drum is provided on the top of the tube body rotating seat, and the rotating drum is a cylindrical structure, and a group of first openings are provided at the center of both ends; a hollow bearing seat is provided in the rotating drum, and an annular rack is rotatably connected to one side of the hollow bearing seat; the central axes of the rotating drum, the hollow bearing seat and the annular rack coincide; the top of the transmission gear is located in the cavity of the rotating drum and is meshedly connected to the annular rack; a number of groups of pneumatic clamps are distributed in a circular array on the inner wall of the annular rack.

[0011] Furthermore, the pipe cutting machine also includes a feeding unit, which includes a feeding barrel; the feeding barrel is a cylindrical structure and is installed at an end of the circular cutting barrel away from the electric slide, and the central axis of the feeding barrel coincides with the circular cutting barrel; a circular cutting connecting port is provided on the side of the feeding barrel close to the circular cutting barrel, and the feeding barrel is connected with the cavity of the circular cutting barrel through the circular cutting connecting port.

[0012] Furthermore, an electric door machine is provided at the bottom of the discharge barrel, and a group of pressure monitoring plates are hinged on the inner wall of the electric door machine and the top inner wall of the discharge barrel; the other end of the pressure monitoring plate extends to the side away from the annular connecting port; the distance from one end of the pressure monitoring plate close to the annular connecting port to the central axis of the discharge barrel is greater than that of the other end; a pressure testing spring is fixedly installed at the edge of one end of the pressure monitoring plate away from the annular connecting port.

[0013] Furthermore, a group of pressure sensors are fixedly installed on the other end of the two groups of pressure test springs, and the two groups of pressure sensors are fixedly installed on the electric door machine and the top inner wall of the lower barrel respectively; a micro switch is installed at the center of the inner wall of one end of the lower barrel away from the annular connecting port, and a cold air outlet is provided on one side of the micro switch; the electric door machine is electrically connected to the micro switch and the pressure sensor respectively.

[0014] A control method for a circular cutting laser tube cutting machine, the control method comprising:

[0015] Fix one end of the tube body in the tube body motion unit to ensure that the center axis of the tube body coincides with the center axis of the annular cutting seat;

[0016] Start the electric slide to drive the other end of the tube body to move into the ring cutting cylinder;

[0017] Control the cutting part of the circular cutting seat to descend to the cutting height, and make the edge grinding blade fit the surface of the pipe body;

[0018] The cutting part of the ring cutting seat is started to perform laser cutting on the tube body;

[0019] The tube body movement unit is started to drive the tube body to rotate toward the edge grinding blade. When the cut part moves below the edge grinding blade, the edge grinding blade is embedded in the cut gap due to the elastic connection with the ring cutting cylinder.

[0020] After the edge grinding blade enters the cut gap, as the tube body continues to rotate, the shaving mechanism rubs against the cut end of the tube body and removes the debris at the end;

[0021] After the tube body rotates one circle, the tube body portion located on the side of the annular cutting cylinder away from the tube body movement unit is separated from the tube body main body, thereby obtaining the cut tube body segments.

[0022] The beneficial effects of the present invention are:

[0023] 1. While the tube is being cut, the edge grinding blade in the direction of the tube's rotation is inserted into the gap after the tube is cut, and as the tube rotates, each group of heat-conducting grinding angles heats the cut end of the tube to prevent it from cooling and hardening. Then each group of shaving blades rubs against the tube's end in turn, and removes the debris at the end, making the tube's end smoother. No additional grinding is required, saving work time. And the shaved debris will enter the chip collection cavity through the inner cavity hole. This allows the edge grinding blade to be removed later and then discharged through the chip reversing hole. While meeting the requirements of automatic circular cutting, it also meets the requirements of automatic edge grinding and automatic waste chip collection.

[0024] 2. When cutting the tube, due to the high temperature of the laser cutting head, a large amount of smoke will be generated at the cutting point. These smoke will move along the arc surfaces on both sides of the middle convex strip during the upward drift, and all will enter the cavity of the splashproof seat through the smoke inlet on the inner wall of the smoke raceway. Then it is collected by the smoke collection box. The port processing unit can collect the smoke generated by cutting while processing the port of the tube. And the arc surface allows the smoke to move regularly to prevent the smoke from spreading to other places, thereby improving the smoke collection effect.

[0025] 3. After the tube enters the discharge barrel, the two sets of pressure sensors are turned on by the micro switch to sense the pressure of the tube on the upper and lower pressure monitoring plates. When the cutting is completed, the cut tube segments fall on the lower set of pressure monitoring plates under the action of gravity, causing the pressure sensed by the lower set of pressure sensors to change. Then the cold air outlet is automatically opened to cool and shape the tube segments, and then the electric door machine is started to discharge the tube segments. While meeting the automatic unloading requirements, it also avoids the deformation of the tube segments due to bumps under high temperature.

[0026] 4. While the tube body is being circumcised, the edge grinding blade and shaving mechanism are used to grind the cut end, making the cut end of the tube body smoother. No additional grinding process is required, which saves working time and improves work efficiency.

[0027] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It shows a schematic structural diagram of a laser tube cutting machine according to an embodiment of the present invention;

[0030] Figure 2 It shows a schematic structural diagram of a tube body motion unit according to an embodiment of the present invention;

[0031] Figure 3 A schematic end cross-sectional view of a tube body motion unit according to an embodiment of the present invention is shown;

[0032] Figure 4 A schematic diagram of the structure of a ring cutting seat according to an embodiment of the present invention is shown;

[0033] Figure 5 A schematic diagram of the structure of a port processing unit according to an embodiment of the present invention is shown;

[0034] Figure 6 A schematic cross-sectional view of an end surface of a port processing unit according to an embodiment of the present invention is shown;

[0035] Figure 7 A schematic diagram showing the connection between the port processing unit and the annular cutting seat according to an embodiment of the present invention is shown;

[0036] Figure 8 The embodiment of the present invention is shown Figure 6 The enlarged schematic diagram in circle A in the middle;

[0037] Fig. 9 A schematic structural diagram of a shaving mechanism according to an embodiment of the present invention is shown;

[0038] Fig.10 A cross-sectional schematic diagram of a material discharge unit according to an embodiment of the present invention is shown.

[0039] In the figure: 100, electric slide; 200, tube motion unit; 210, tube rotating seat; 220, servo motor; 230, transmission gear; 240, rotating drum; 250, hollow bearing seat; 260, ring rack; 270, pneumatic clamp; 300, ring cutting seat; 310, ring cutting cylinder; 320, anti-touch plate; 330, laser cutting control system; 340, laser cutting head; 350, edge grinding seat; 400, port processing unit; 410, splashproof seat; 411, middle convex strip; 420, smoke rolling road; 421, smoke inlet; 430, Ceramic heating plate; 440, edge grinding blade; 450, shaving mechanism; 451, shaving blade mounting plate; 452, thermal conductive grinding angle; 453, inner cavity hole; 454, shaving blade body; 460, chip reversing hole; 470, top groove; 480, smoke collection box; 481, smoke inlet hole; 490, pressing spring; 500, unloading unit; 510, unloading barrel; 511, circular cutting connecting port; 520, electric door machine; 530, pressure monitoring board; 540, pressure sensor; 550, pressure test spring; 560, micro switch; 570, cold air outlet. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] The embodiment of the present invention provides a circular cutting type laser tube cutting machine, comprising an electric slide 100 and a circular cutting seat 300. For example, Figure 1 As shown, a tube body motion unit 200 is slidably connected to the output end of the electric slide 100. The tube body motion unit 200 is used to drive the tube body to rotate.

[0042] A ring cutting seat 300 is fixedly mounted at one end of the electric slide 100. The central axis of the main body of the ring cutting seat 300 coincides with the central axis of the main body of the pipe body motion unit 200. The ring cutting seat 300 is used to perform ring cutting on the pipe body.

[0043] The top inner wall of the circumcision seat 300 is provided with a port processing unit 400. The port processing unit 400 is used to perform edge grinding on the end surface of the tube body after circumcision.

[0044] A material unloading unit 500 is fixedly installed at the center of one end of the circular cutting seat away from the electric slide 100, and the cavity of the material unloading unit 500 is connected with the cavity of the circular cutting seat 300. The material unloading unit 500 is used to automatically unload the cut tube segments.

[0045] The tube body moving unit 200 includes a tube body rotating seat 210. For example, Figure 2 and Figure 3 As shown, the tube body rotating seat 210 is fixedly mounted on the output end of the electric slide 100, and a servo motor 220 is fixedly mounted inside the tube body rotating seat 210, and a transmission gear 230 is connected to the output end of the servo motor 220. A rotating drum 240 is fixedly mounted on the top of the tube body rotating seat 210, and the rotating drum 240 is a cylindrical structure, and a group of first openings are provided at the center of both ends. A hollow bearing seat 250 rotates inside the rotating drum 240, and a ring rack 260 is connected to one side of the hollow bearing seat 250. The central axes of the rotating drum 240, the hollow bearing seat 250 and the ring rack 260 are all coincident. The top of the transmission gear 230 is located in the cavity of the rotating drum 240, and is meshedly connected to the ring rack 260. A plurality of groups of pneumatic clamps 270 are distributed in a circular array on the inner wall of the ring rack 260.

[0046] When the circumcision work is needed, firstly, the tube body is passed through the annular rack 260 from a group of first openings away from the circumcision seat 300, and placed between each group of pneumatic clamps 270, and at the same time, it is ensured that the other end of the tube body extends to the outside of the rotating drum 240. Then the pneumatic clamps 270 are started to fix the position of the tube body so that the central axis of the tube body coincides with the central axis of the rotating drum 240. Then the electric slide 100 is started so that a section of the tube body located outside the rotating drum 240 is moved into the circumcision seat 300. And the horizontal position of the tube body is fine-tuned according to the length of the tube body segment to be cut. After the adjustment is completed, the cutting part and the servo motor 220 of the circumcision seat 300 are turned on, and the transmission gear 230 is driven to rotate by the servo motor 220, and then the annular rack 260 is driven to rotate by the transmission gear 230, so that the tube body can be rotated while being cut, thereby realizing the function of annular cutting. After cutting is completed, the cut tube body is discharged in sections through the unloading unit 500, and the electric slide 100 is started to drive the tube body to continue to move toward the ring cutting seat 300. In this way, the demand for continuous cutting is met, and manual loading and unloading is unnecessary, ensuring the continuity of ring cutting.

[0047] The annular cutting seat 300 includes an annular cutting cylinder 310. For example, Figure 4 As shown, the annular cutting cylinder 310 is a cylindrical structure, and a group of second openings are provided at the center of both ends, and an anti-touch plate 320 is fixedly installed on the second opening, and the anti-touch plate 320 is a circular ring structure. The central axes of the anti-touch plate 320, the annular cutting cylinder 310 and the rotating cylinder 240 are all coincident. An electric lifting platform is provided on the top of the annular cutting cylinder 310, and a laser cutting control system 330 is fixedly installed at the bottom of the electric lifting platform. The bottom of the laser cutting control system 330 extends into the cavity of the annular cutting cylinder 310, and a laser cutting head 340 is fixedly installed, and an edge grinding seat 350 is fixedly installed on one side of the laser cutting head 340.

[0048] Before the ring cutting work is performed, the laser cutting control system 330 is located at the highest point of the electric lifting platform. After the pipe body moves into the ring cutting cylinder 310, the electric lifting platform drives the laser cutting control system 330 and the laser cutting head 340 to descend to the cutting height. And the port processing unit 400 can be attached to the surface of the pipe body. Then the pipe body rotates in the direction of the port processing unit 400 under the action of the pipe body motion unit 200. After the laser cutting head 340 cuts the pipe body, the port processing unit 400 is used to quickly grind the cut port. The quality of the pipe body segment after cutting is guaranteed.

[0049] The port processing unit 400 includes a splash guard 410. For example, Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, a pressing spring 490 is fixedly mounted on the edge grinding seat 350, and the splash guard seat 410 is fixedly mounted on the pressing spring 490. The cross section of the splash guard seat 410 is set as a fan-shaped block structure. A middle convex strip 411 is fixedly mounted at the center of the bottom of the splash guard seat 410 along a direction perpendicular to the laser cutting head 340, and a ceramic heating plate 430 is fixedly mounted at the bottom of the middle convex strip 411. An edge grinding blade 440 is movably clamped at the bottom of the ceramic heating plate 430, and the top of the edge grinding blade 440 is in contact with the ceramic heating plate 430. The side section of the edge grinding blade 440 is set as a fan-shaped plate structure. A chip collecting chamber is provided in the edge grinding blade 440. A chip reversing hole 460 is provided at one end of the chip collecting chamber. Several groups of shaving mechanisms 450 are evenly distributed on the side wall of the edge grinding blade 440, and the output end of the shaving mechanism 450 is connected to the chip collecting chamber. Two groups of arc surfaces are symmetrically arranged on the two side walls of the middle convex strip 411. Two groups of smoke runners 420 are symmetrically arranged on the outer wall at the bottom of the splash-proof seat 410 with the central axis of the middle convex strip 411 as the center, and the inner wall of the smoke runner 420 is connected to the arc surface. A smoke inlet 421 is arranged on the inner wall of the smoke runner 420. A top groove 470 is provided on one side wall of the splash-proof seat 410 close to the edge grinding seat 350, and a smoke collection box 480 is movably connected in the top groove. The bottom of the smoke collection box 480 extends into the cavity of the splash-proof seat 410, and a plurality of groups of smoke inlet holes 481 are evenly distributed on the outer wall of the smoke collection box 480. The bottom height of the edge grinding blade 440 is the same as the height of the central through hole of the anti-touch plate 320.

[0050] The shaving mechanism 450 includes a shaving blade mounting plate 451. Fig. 9 As shown, the razor mounting plate 451 is fixedly mounted on the side wall of the edge grinding blade 440, and an inner cavity hole 453 is opened on the razor mounting plate 451, and the other side of the inner cavity hole 453 is connected to the chip collecting chamber. A heat-conducting grinding angle 452 is fixedly mounted on the edge of one end of the razor mounting plate 451 close to the laser cutting head 340, and one end of the heat-conducting grinding angle 452 is connected to the ceramic heating plate 430. A razor body 454 is fixedly mounted on the edge of one end of the razor mounting plate 451 away from the laser cutting head 340, and the other end of the razor body 454 extends to one side of the heat-conducting grinding angle 452.

[0051] When the tube is cut, the edge grinding blade 440 will fit on the surface of the tube, and because the cross section of the edge grinding blade 440 is a fan-shaped structure, it has a higher degree of fit with the surface of the tube. When the laser cutting head 340 cuts the tube, because the tube rotates toward the side of the edge grinding blade 440, under the action of the pressing spring 490, the edge grinding blade 440 will quickly snap into the gap after cutting, and continue to rotate with the tube. The port of the tube is in contact with several groups of heat-conducting grinding angles 452 on the two side walls of the edge grinding blade 440, so that the heat-conducting grinding angles 452 can transfer the heat generated by the ceramic heating plate 430 to the port of the tube to prevent it from cooling and hardening. Then, as the tube continues to rotate, the port of the tube in a high temperature state rubs against the shaver body 454, and the debris at the port of the tube is shaved off by the shaver body 454, making its surface smoother. The shaved debris will enter the chip collection cavity through the inner cavity hole 453. This is so that the edge grinding blade 440 can be disassembled later and then discharged through the chip discharge hole.

[0052] While the tube is being cut, the edge grinding blade 440 in the direction of the tube's rotation is inserted into the gap after the tube is cut, and as the tube rotates, each group of heat-conducting grinding angles 452 heats the port of the tube after it is cut to prevent it from cooling and hardening. Then, each group of razor bodies 454 rubs against the port of the tube in turn, and removes the debris at the port, making the port of the tube smoother, without the need for additional grinding, saving work time. And the shaved debris will enter the chip collection cavity through the inner cavity hole 453. This allows the edge grinding blade 440 to be disassembled later, and then discharged through the chip removal hole. While meeting the requirements of automatic circular cutting, it also meets the functions of automatic edge grinding and automatic collection of waste chips.

[0053] When the tube body is cut, due to the high temperature of the laser cutting head 340, a large amount of smoke will be generated at the cutting point. These smoke will move along the arc surfaces on both sides of the middle convex strip 411 during the upward drifting process, and all will enter the cavity of the splash guard 410 through the smoke inlet 421 on the inner wall of the smoke roller 420. Then it is collected by the smoke collection box 480. The port processing unit 400 can collect the smoke generated by the cutting while processing the port of the tube body. And the arc surface is used to make the smoke move regularly, preventing the smoke from spreading to other places, thereby improving the smoke collection effect.

[0054] The unloading unit 500 includes an unloading barrel 510. For example, Fig.10As shown, the lower barrel 510 is a cylindrical structure and is fixedly installed at the end port of the annular cutting barrel 310 away from the electric slide 100. The central axis of the lower barrel 510 coincides with the central axis of the annular cutting barrel 310, and a side of the lower barrel 510 close to the annular cutting barrel 310 is provided with an annular cutting communication port 511, and the lower barrel 510 is connected with the cavity of the annular cutting barrel 310 through the annular cutting communication port 511. An electric door machine 520 is provided at the bottom of the lower barrel 510, and a group of pressure monitoring plates 530 are hinged on the inner wall of the electric door machine 520 and the inner wall of the top of the lower barrel 510. The other end of the pressure monitoring plate 530 extends to the side away from the annular cutting communication port 511. The distance from the end of the pressure monitoring plate 530 close to the annular cutting communication port to the central axis of the lower barrel 510 is greater than the other end. A pressure test spring 550 is fixedly installed at the edge of one end of the pressure monitoring plate 530 away from the annular communication port 511, and a group of pressure sensors 540 are fixedly installed at the other ends of two groups of pressure test springs 550, respectively. The two groups of pressure sensors 540 are respectively fixedly installed on the electric door machine 520 and the top inner wall of the lower barrel 510. A micro switch 560 is installed at the center of the inner wall of one end of the lower barrel 510 away from the annular communication port 511, and a cold air outlet 570 is provided on one side of the micro switch 560. The electric door machine 520 is electrically connected to the micro switch 560 and the pressure sensor 540, respectively.

[0055] Before cutting, the electric slide 100 drives the tube body to move, and one end of the tube body penetrates into the discharge barrel 510 and contacts the micro switch 560. The pressure sensor 540 is turned on and squeezes the two sets of pressure monitoring plates 530 at the same time. The pressure monitoring plates 530 then transmit the pressure to the pressure test spring 550, and finally the pressure is sensed by the pressure sensor 540. Since the central axis of the tube body coincides with the central axis of the discharge barrel 510, the pressure values ​​sensed by the two sets of pressure sensors 540 are the same. When the cutting is completed, the cut tube body segments will fall onto the lower set of pressure monitoring plates 530 under the action of gravity. At this time, the pressure value sensed by the lower set of pressure sensors 540 changes, and a command will be sent to the cold air outlet 570 first, and cold air will be delivered through the cold air outlet 570 to cool and shape the cut tube body segments. Then a command is sent to the electric door machine 520, so that the electric door machine 520 is turned on and the cooled tube body segments are discharged.

[0056] After the tube enters the discharge barrel 510, the two sets of pressure sensors 540 are activated by the micro switch 560 to respectively sense the pressure of the tube on the upper and lower pressure monitoring plates 530. When the cutting is completed, the cut tube segments fall on the lower set of pressure monitoring plates 530 under the action of gravity, causing the pressure sensed by the lower set of pressure sensors 540 to change. Then the cold air outlet 570 is automatically opened to cool and shape the tube segments, and then the electric door machine 520 is started to discharge the tube segments. While meeting the automatic unloading requirements, it also avoids the deformation of the tube segments under high temperature due to collisions.

[0057] Based on the above-mentioned ring-cutting laser tube cutting machine, an embodiment of the present invention further proposes a control method for the laser tube cutting machine. Exemplarily, the control method includes:

[0058] Pass the tube through a first opening away from the annular cutting seat into the annular rack and place it between each set of pneumatic clamps, ensuring that the other end of the tube extends to the outside of the drum;

[0059] Start the pneumatic clamp to fix the position of the tube body so that the center axis of the tube body coincides with the center axis of the drum;

[0060] Start the electric slide to drive the tube body to move toward the side of the ring cutting seat, so that one end of the tube body passes through the ring cutting cylinder and the unloading cylinder in turn, and while applying pressure to the two sets of pressure monitoring plates, it contacts the micro switch, so that the two sets of pressure sensors are turned on;

[0061] Start the electric lifting platform to lower the laser cutting head to the cutting height and make the edge grinding blade fit the surface of the pipe;

[0062] Start the laser cutting head and perform cutting through the operation of the laser cutting head;

[0063] The servo motor is started, and the pipe body is rotated toward the edge grinding blade through the operation of the servo motor. When the cut part moves below the edge grinding blade, the edge grinding blade is embedded in the cut gap under the action of the pressing spring;

[0064] After the edge grinding blade enters the cut gap, as the tube body continues to rotate, the shaving mechanism rubs against the cut end of the tube body and removes the debris at the end;

[0065] After the tube body rotates one circle, the tube body part located on the side of the laser cutting head away from the tube body motion unit is separated from the tube body, and the tube body is segmented, and the cutting work is completed;

[0066] After the cutting is completed, the pipe segments fall on a set of pressure monitoring plates below due to gravity, and the pressure values ​​detected by a set of pressure sensors below change;

[0067] The pressure sensor sends a command to the cold air outlet, and the cold air outlet starts to deliver cold air to cool and shape the pipe section;

[0068] After cooling is completed, the electric door machine opens and discharges the tube in sections.

[0069] While the pipe body is being circumcised, the edge grinding blade and shaving mechanism are used to grind the cut end, so that the cut end of the pipe body is smoother, and no additional grinding process is required, which saves working time and improves working efficiency.

[0070] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A ring-cutting laser tube cutting machine, characterized in that: The electric slide (100) comprises an electric slide (100), a tube body motion unit (200) is slidably connected to the electric slide (100), a ring cutting seat (300) is provided at one end of the electric slide (100), the ring cutting seat (300) comprises a ring cutting cylinder (310), the ring cutting cylinder (310) is a cylindrical structure, and the central axis of the ring cutting cylinder (310) coincides with the central axis of a rotating cylinder (240) in the tube body motion unit (200); a laser cutting head (340) is provided on the inner wall of the top of the ring cutting cylinder (310), and a port processing unit (400) is provided on one side of the laser cutting head (340); The port processing unit (400) comprises a splash-proof seat (410); the splash-proof seat (410) is elastically mounted on the inner wall of the annular cutting cylinder (310); the splash-proof seat (410) is configured as a block structure with a fan-shaped cross section; a central convex strip (411) is mounted at the center of the bottom of the splash-proof seat (410), and a ceramic heating plate (430) is fixedly mounted at the bottom of the central convex strip (411); an edge grinding blade (440) is movably clamped at the bottom of the ceramic heating plate (430), and the side cross section of the edge grinding blade (440) is configured as a fan-shaped plate. structure; a chip reversing hole (460) is provided at one end of the edge grinding blade (440); a plurality of groups of chip shaving mechanisms (450) are evenly distributed on the side wall of the edge grinding blade (440); two groups of arc surfaces are symmetrically provided on the two side walls of the middle convex strip (411); two groups of smoke rolling channels (420) are symmetrically provided on the outer wall of the bottom of the splashproof seat (410) with the central axis of the middle convex strip (411) as the center, and the inner wall of the smoke rolling channel (420) is connected to a group of arc surfaces on the same side; a smoke inlet (421) is provided on the inner wall of the smoke rolling channel (420); The shaving mechanism (450) comprises a shaving blade mounting plate (451); the shaving blade mounting plate (451) is mounted on the side wall of the edge grinding blade (440); an inner cavity hole (453) is formed on the shaving blade mounting plate (451); the other side of the inner cavity hole (453) is connected to the shaving collecting chamber; a heat-conducting grinding angle (452) is fixedly mounted on the edge of one end of the shaving blade mounting plate (451) close to the laser cutting head (340); a shaving blade body (454) is mounted on the edge of one end of the shaving blade mounting plate (451) away from the laser cutting head (340); the other end of the shaving blade body (454) extends toward one side of the heat-conducting grinding angle (452); A group of second openings are provided at the centers of both ends of the circular cutting cylinder (310), and an anti-touch plate (320) is installed on the second opening, and the anti-touch plate (320) is a circular ring structure; the central axes of the anti-touch plate (320), the circular cutting cylinder (310) and the rotating cylinder (240) are all coincident; an electric lifting platform is provided on the top of the circular cutting cylinder (310), and a laser cutting control system (330) is fixedly installed on the bottom of the electric lifting platform; The bottom of the laser cutting control system (330) extends into the cavity of the circular cutting cylinder (310) and is installed with a laser cutting head (340), and an edge grinding seat (350) is fixedly installed on one side of the laser cutting head (340); The pipe cutting machine also includes a feeding unit (500), and the feeding unit (500) includes a feeding barrel (510); the feeding barrel (510) is a cylindrical structure, and is installed at an end of the circular cutting barrel (310) away from the electric slide (100), and the central axis of the feeding barrel (510) coincides with the circular cutting barrel (310); a circular cutting communication port (511) is provided on a side of the feeding barrel (510) close to the circular cutting barrel (310), and the feeding barrel (510) is connected to the cavity of the circular cutting barrel (310) through the circular cutting communication port (511).

2. The circular cutting laser tube cutting machine according to claim 1, characterized in that: The tube body motion unit (200) comprises a tube body rotating seat (210); the tube body rotating seat (210) is mounted on the output end of the electric slide (100); a servo motor (220) is mounted in the tube body rotating seat (210); and a transmission gear (230) is transmission-connected to the output end of the servo motor (220).

3. The circular cutting laser tube cutting machine according to claim 2, characterized in that: A rotating drum (240) is provided on the top of the tubular rotating seat (210); the rotating drum (240) is a cylindrical structure, and a group of first openings are provided at the centers of both ends; a hollow bearing seat (250) is provided inside the rotating drum (240), and a ring rack (260) is rotatably connected to one side of the hollow bearing seat (250); the central axes of the rotating drum (240), the hollow bearing seat (250) and the ring rack (260) coincide; the top of the transmission gear (230) is located in the cavity of the rotating drum (240) and is meshedly connected to the ring rack (260); and a plurality of groups of pneumatic clamps (270) are distributed in a ring array on the inner wall of the ring rack (260).

4. The circular cutting laser tube cutting machine according to claim 1, characterized in that: An electric door machine (520) is provided at the bottom of the discharge barrel (510), and a group of pressure monitoring plates (530) are hinged on the inner wall of the electric door machine (520) and the inner wall of the top of the discharge barrel (510); the other end of the pressure monitoring plate (530) extends to the side away from the annular connecting port (511); the distance from one end of the pressure monitoring plate (530) close to the annular connecting port to the central axis of the discharge barrel (510) is greater than that of the other end; a pressure test spring (550) is fixedly installed at the edge of one end of the pressure monitoring plate (530) away from the annular connecting port (511).

5. The circular cutting laser tube cutting machine according to claim 4, characterized in that: A group of pressure sensors (540) are fixedly installed at the other end of the two groups of pressure test springs (550), and the two groups of pressure sensors (540) are fixedly installed on the electric door machine (520) and the top inner wall of the lower barrel (510) respectively; a micro switch (560) is installed at the center of the inner wall of one end of the lower barrel (510) away from the annular connecting port (511), and a cold air outlet (570) is provided on one side of the micro switch (560); the electric door machine (520) is electrically connected to the micro switch (560) and the pressure sensor (540), respectively.

6. A control method used by the ring-cutting laser tube cutting machine according to any one of claims 1 to 5, characterized in that: The control method comprises: Fix one end of the tube body in the tube body motion unit to ensure that the center axis of the tube body coincides with the center axis of the annular cutting seat; Start the electric slide to drive the other end of the tube body to move into the ring cutting cylinder; Control the cutting part of the circular cutting seat to descend to the cutting height, and make the edge grinding blade fit the surface of the pipe body; The cutting part of the ring cutting seat is started to perform laser cutting on the tube body; The tube body movement unit is started to drive the tube body to rotate toward the edge grinding blade. When the cut part moves below the edge grinding blade, the edge grinding blade is embedded in the cut gap due to the elastic connection with the ring cutting cylinder. After the edge grinding blade enters the cut gap, as the tube body continues to rotate, the shaving mechanism rubs against the cut end of the tube body and removes the debris at the end; After the tube body rotates one circle, the tube body portion located on the side of the annular cutting cylinder away from the tube body movement unit is separated from the tube body main body, thereby obtaining the cut tube body segments.

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