Laser cutting equipment for large pipe

Abstract

The laser cutting equipment comprises a supporting and transporting device and rotary cutting equipment with the hollow interior, the supporting and transporting device is used for supporting the pipe and enabling the pipe to walk in the length direction of the supporting and transporting device, and the rotary cutting equipment is assembled on the supporting and transporting device and used for cutting the pipe in the length direction of the supporting and transporting device. The rotary cutting equipment comprises a cutting track with a partial annular shape and laser cutting equipment, the cutting track is coaxial with the pipe, the laser cutting equipment is configured to move along the cutting track and cut the pipe in the circumferential direction, the number of the laser cutting equipment is two, the laser cutting equipment is perpendicular to each other, and the laser cutting equipment is arranged at the midpoint of a chord of the cutting track; according to the laser cutting equipment, the laser generator is arranged, so that light beams emitted by the laser generator can vertically irradiate on the surface of the pipe, a traditional pipe rotating driving mode is replaced by controlling the laser cutting equipment to rotate, the pipe can be controlled to be finer during cutting, and energy consumption is lower.

Description

Technical Field

[0001] The present application relates to the technical field of pipe cutting, and in particular to a laser cutting device for large pipes. Background Art

[0002] The core component of the laser cutting machine is the laser generator, which can generate a high-energy, highly directional laser beam. The laser beam is focused onto the surface of the material through an optical system, forming a focus with high energy density. When the laser beam irradiates the surface of the material, the material absorbs the laser energy and rapidly heats up to the temperature of melting or vaporization. For metal materials, the laser energy will cause the metal to melt and evaporate, forming a cutting gap. During the cutting process, auxiliary gas is usually used to blow into the cutting area.

[0003] When a laser cutting knife is used to cut a pipe, a clamping device is generally used to push the pipe to the area to be cut, and a rotating structure is used to rotate the pipe circumferentially, so that the laser cuts along the surface of the pipe.

[0004] When facing large pipes and using the above-mentioned pipe cutting method to cut large pipes, due to the large size and weight, controlling the rotation of the pipe requires greater power, which will consume more electricity, resulting in greater energy consumption and reduced economic benefits. Summary of the Invention

[0005] The present application provides a laser cutting device for large pipes, which can solve the problem of excessive energy consumption and low economic benefits in cutting large pipes.

[0006] The technical solution of this application is as follows: A laser cutting device for large pipes, comprising: A supporting and transporting device, wherein the supporting and transporting device is used to support the pipe and enable the pipe to move along the length direction of the supporting and transporting device; A rotary cutting device with a hollow interior is assembled on a supporting and transporting device. The rotary cutting device includes a cutting track with a partial annular shape and a laser cutting device. The cutting track is coaxial with the pipe. The laser cutting device is configured to move along the cutting track and cut the pipe circumferentially. The laser cutting device includes two laser cutting devices arranged perpendicular to each other. The laser cutting device is arranged at the midpoint of the chord of the cutting track so that the light beam emitted by the laser generator can hit the surface of the pipe vertically.

[0007] By adopting the above solution, the laser cutting equipment is assembled on a circular cutting track, and the supporting and transporting device is used to carry the pipe along its own axial direction. When it moves to the position to be cut, the laser cutting equipment will rotate along the cutting track. Since the laser cutting equipment is set as two laser cutting equipments arranged perpendicular to each other, the device can simultaneously drive the two laser cutting equipments to rotate around the pipe, that is, it can rotate a smaller amplitude to achieve all-round cutting of the pipe. Compared with rotating the pipe 360°, rotating the laser cutting equipment with a small amplitude consumes less energy and has higher cutting efficiency. At the same time, the cutting speed of the device to the pipe can be controlled more accurately. In addition, by setting the laser cutting equipment at the midpoint of the chord length of the cutting track coaxial with the pipe, the laser beam of the laser cutting equipment is always perpendicular to the surface of the pipe when it rotates, making the cutting seam more regular and the cutting efficiency higher, while reducing the noise generation to a certain extent.

[0008] In one embodiment of the present application, the rotary cutting device further comprises: A hollow frame, wherein the hollow frame is mounted on the supporting and transporting device, the cutting track is mounted on the inner wall of the hollow frame, a rectangular opening is opened on one side of the outer surface of the hollow frame, and a glass plate is mounted at the rectangular opening; An L-shaped frame, the L-shaped frame being mounted on the inner wall of the cutting track, the L-shaped frame comprising two mutually perpendicular vertical sections and a horizontal section, the lengths of the vertical section and the horizontal section being equal to the chord length of the circle on which the cutting track lies, and the two laser cutting devices being mounted at the midpoints of the vertical section and the horizontal section, respectively; A travel drive device, the travel drive device includes a drive gear and a drive motor, the drive gear is rotatably assembled at the connection between the vertical section and the horizontal section through a rotating shaft, the drive motor is assembled on one side of the L-shaped frame, the drive shaft of the drive motor is coaxially connected and fixed to the rotating shaft, the ends of the vertical section and the horizontal section that are away from each other are respectively rotatably connected with driven gears, and a tooth groove is provided on the inner wall of the cutting track, and the tooth groove is engaged with the drive gear and the driven gear.

[0009] By adopting the above solution, by setting the L-shaped frame as the chord of the circular ring where the cutting track is located, the laser cutting equipment can be assembled in the middle of the L-shaped frame, so that when the laser cutting equipment rotates along the cutting track, the laser beam emitted can always be perpendicular to the surface of the pipe, so that the laser heat is more concentrated, so that when cutting the pipe, the cutting seam is more regular and the energy utilization rate is higher; In addition, the driving motor is used to drive the driving gear to rotate, and the driving gear can rotate along the tooth groove of the cutting track. Through the engagement between the driving gear and the tooth groove, the entire L-shaped frame can be driven to rotate circumferentially along the cutting track, so as to drive the two laser cutting devices to rotate at the same time and achieve precise cutting of the pipe surface.

[0010] In one embodiment of the present application, a mezzanine is provided inside the vertical section and the horizontal section, and a rectangular placement groove is opened at the midpoint of the mezzanine on both the vertical section and the horizontal section, and a rubber layer is provided inside the rectangular placement groove. The two laser cutting devices are respectively assembled on the rubber layer, and the driving gear is assembled in the mezzanine. The driving shaft of the driving motor passes through one side of the L-shaped frame and is coaxially connected and fixed with the driving gear. The vertical section and the horizontal section are provided with multiple groups of limit members at the mezzanine, and the multiple groups of limit members are respectively located on one side of the driving gear or the driven gear in a one-to-one correspondence.

[0011] By adopting the above solution, by setting a sandwich layer inside the L-shaped frame and assembling the laser cutting equipment on the rubber layer in the sandwich layer, the assembly stability of the laser cutting equipment is ensured. At the same time, the rubber layer can effectively absorb the vibration generated by the laser cutting equipment during cutting, thereby reducing the noise generated by the device when cutting pipes.

[0012] In one embodiment of the present application, the limiting element includes: A fixing seat with a spherical cavity is provided inside, and two fixing seats are provided. The two fixing seats are relatively assembled on the inner wall of the interlayer of the L-shaped frame; A ball is arranged in the spherical cavity, one end of the ball protrudes from the spherical cavity and contacts with two sides of the cutting track.

[0013] By adopting the above solution and setting the limit pieces, when the L-shaped frame is assembled on the cutting track, the limit pieces on both sides of the L-shaped frame can press against both sides of the cutting track, thereby preventing the L-shaped frame from being placed on the cutting track and remaining stable. At the same time, the ball rotates itself when the L-shaped frame rotates, using rolling friction instead of sliding friction, thereby reducing the friction resistance encountered by the L-shaped frame when it rotates on the cutting track.

[0014] In one embodiment of the present application, a notch is provided on one side of the cutting track, and an angle a of the notch satisfies 0≤a≤90°.

[0015] By adopting the above solution, by opening a notch on the cutting track and ensuring that the cutting track has an arc of at least 270°, the laser cutting equipment set on the L-shaped frame can achieve 360° all-round cutting of the pipe through circumferential movement in two directions, with a smaller movement stroke and higher cutting efficiency. At the same time, setting a notch on the cutting track can also facilitate the pipe to be pulled out sideways from the notch of the cutting track.

[0016] In one embodiment of the present application, the cutting track is provided with partially circular sound-absorbing cotton strips on both sides close to the inner circle, and the balls and the sound-absorbing cotton strips are in conflict with each other.

[0017] By adopting the above solution, sound-absorbing cotton strips are arranged on the cutting track, so that the ball can roll on the sound-absorbing cotton strips. At the same time, the cotton strips can effectively absorb the vibration generated by the laser cutting equipment when cutting the pipe, thereby reducing the noise pollution generated by the laser cutting equipment during cutting.

[0018] In one embodiment of the present application, two supporting and transporting devices are provided, one located on each side of the rotary cutting device, and the supporting and transporting devices include: A support frame, the support frame is arranged on one side of the hollow frame, one end of the support frame extends into the interior of the hollow frame and is located on one side of the cutting track; A roller assembly is provided, wherein a plurality of roller assemblies are installed at intervals along the length direction of the support frame at the upper end of the support frame. The roller assembly includes: a roller frame and a roller. The roller frame is installed at the upper end of the support frame, and the roller is rotatably installed on the roller frame.

[0019] By adopting the above scheme, a plurality of rollers are arranged at intervals along the length direction of the support frame, so that the pipe to be cut can be placed on the plurality of rollers. While the position of the pipe is limited, the pipe can keep feeding under the rotation of the roller. When the pipe is moving, the resistance it encounters is rolling friction, which is smaller than the sliding friction resistance, thereby making the pipe more convenient to move, ensuring that the pipe is fed more continuously during cutting, and improving the working efficiency of the pipe.

[0020] In one embodiment of the present application, the supporting and transporting device also includes a driving wheel assembly, and the driving wheel assembly includes a driving frame and a servo motor. The driving frame is mounted on one end of the supporting frame, and a rotating shaft is rotatably mounted in the driving frame. The roller is coaxially sleeved on the rotating shaft, and one end of the rotating shaft protrudes from the driving frame. The servo motor is mounted below the supporting frame, and a transmission belt is sleeved between the driving shaft of the servo motor and one end of the rotating shaft.

[0021] By setting up a servo motor, the servo motor rotates to drive the belt to rotate, and the belt drives the rotating shaft to rotate, and the roller connected to the rotating shaft rotates. The roller uses friction as power, so that the pipe can keep feeding along the length direction of the support frame.

[0022] In one embodiment of the present application, the support frame is further equipped with a clamping mechanism, and the clamping mechanism includes: A support column, wherein the support column is fixedly assembled on the support frame along the vertical direction; An L-shaped height limit frame has a cylindrical cavity at one end of the L-shaped height limit frame, and the L-shaped height limit frame is sleeved on the support column. An elastic member is provided inside the cylindrical cavity, and both ends of the elastic member are respectively connected and fixed to the support column and the L-shaped height limit frame. The other end of the L-shaped height limit frame is fixedly connected to a connecting frame close to the side of the support frame, and the roller is rotatably assembled inside the connecting frame.

[0023] By adopting the above solution, the L-shaped height limit frame is set above the pipe. According to the diameter of the pipe, the height of the L-shaped height limit frame is raised so that the L-shaped height limit frame can be buckled above the pipe. The elastic force of the elastic member pulls the L-shaped height limit frame, which can provide a certain downward pressure on the pipe, making the pipe more stable when placed. At the same time, the rollers arranged below the L-shaped height limit frame can reduce the friction resistance between the pipe and the L-shaped height limit frame during feeding.

[0024] In one embodiment of the present application, the roller includes: Conical wheels, two of which are arranged opposite to each other, each having a cylindrical threaded cavity formed therein; The rotating tube is provided with a thread on the outside, and the conical wheel is sleeved on the outside of the rotating tube and is threadedly connected to the rotating tube.

[0025] By adopting the above solution, the tapered wheels are connected to the outside of the rotating tube with threads at opposite positions, so that the position between the two tapered wheels can be adjusted according to the actual diameter of the tube, so that the tube can be better limited.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. By placing the pipe on the supporting transport device, the pipe can move along the supporting transport device, and at the same time setting a rotatable laser cutting device, the laser cutting device can rotate around the surface of the pipe. Compared with the method of directly driving the pipe to rotate, driving the laser cutting device with smaller volume and weight can greatly reduce energy loss. During laser cutting, the cutting speed can also be controlled more accurately, thereby improving the cutting accuracy.

[0027] 2. By placing the L-shaped frame at the chord of the circular cutting track and limiting the length of the L-shaped frame and the assembly position of the laser cutting equipment, according to basic geometric theorems, when the laser cutting equipment rotates around the surface of the pipe and cuts the pipe, since the pipe and the cutting track are coaxial, the laser cutting equipment always emits the laser in the radial direction of the cutting track. When the laser beam hits the surface of the pipe, the beam hits the pipe surface vertically, thereby improving the energy utilization of the laser beam, ensuring the regularity of the cut seam, and reducing the noise generated during cutting.

[0028] 3. By providing stoppers on both sides of the inner wall of the interlayer of the L-shaped frame, when the L-shaped frame is assembled on the cutting track, the cutting track is embedded in the interlayer of the L-shaped frame, and the stoppers on both sides of the inner wall of the interlayer are used to support the cutting track. The ball bearings can roll along the cutting track, thereby enabling the L-shaped frame to move along the cutting track while reducing the resistance encountered during movement.

[0029] 4. By setting a notch on one side of the cutting track and setting up two mutually perpendicular laser cutting devices, when the device uses the laser cutting equipment to cut the pipe, it can drive the L-shaped frame walking part to a smaller arc, so that the pipe can be cut 360° in all directions, which improves the cutting efficiency while reducing material and energy loss, further improving economic benefits.

[0030] 5. By setting up a conical wheel with adjustable spacing, when the pipe is placed on the conical wheel, the device can adjust the spacing according to the diameter of the pipe, making the pipe more stable when placed. In addition, the L-shaped height limit frame is used to press down the upper part of the pipe, and one end of the placed pipe is tilted, ensuring that the pipe can move along the length direction of the support frame while improving the stability of the pipe feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a front view of a laser cutting device for large pipes provided in the first embodiment of the present application; Figure 2 This is a front cross-sectional view of a laser cutting device for large pipes provided in the first embodiment of the present application; Figure 3 This is a front view of an L-shaped frame of a laser cutting device for large pipes provided in the first embodiment of the present application; Figure 4 This is a front view of a support and transportation device for laser cutting equipment for large pipes provided in the first embodiment of the present application; Figure 5 This is a front cross-sectional view of a cutting track of a laser cutting device for large pipes provided in the first embodiment of the present application; Figure 6 This is an exploded front view of an L-shaped frame of a laser cutting device for large pipes provided in the first embodiment of the present application; Figure 7 This is a front view of a sound-absorbing cotton strip for laser cutting equipment for large pipes provided in the second embodiment of the present application; Figure 8 This is a side sectional view of an L-shaped height limit frame of a laser cutting device for large pipes provided in the first embodiment of the present application; Figure 9 This is a side sectional view of a conical wheel of a laser cutting device for large pipes provided in the first embodiment of the present application; Figure 10 This is a front view of a conical wheel of a laser cutting device for large pipes provided in the first embodiment of the present application.

[0032] Explanation of reference numerals: 1. Support and transport device; 11. Support frame; 12. Roller assembly; 121. Roller frame; 122. Roller; 1221. Conical wheel; 1222. Rotating tube; 13. Driving wheel assembly; 131. Driving frame; 132. Servo motor; 133. Rotating shaft; 134. Transmission belt; 14. Clamping mechanism; 141. Support column; 142. L-shaped height limit frame; 1421. Columnar cavity; 143. Elastic member; 144. Connecting frame; 2. Rotary cutting equipment ; 21. Cutting track; 211. Tooth groove; 212. Notch; 213. Sound-absorbing cotton strip; 22. Laser cutting equipment; 23. Hollow frame; 231. Glass plate; 24. L-shaped frame; 241. Vertical section; 242. Horizontal section; 243. Interlayer; 244. Rubber layer; 25. Travel drive device; 251. Drive gear; 252. Drive motor; 253. Rotating shaft; 254. Driven gear; 26. Limiting piece; 261. Fixed seat; 262. Ball bearing; 3. Pipe. DETAILED DESCRIPTION

[0033] The following is combined with Figures 1-10 The laser cutting equipment for large pipes provided in this application is further described in detail.

[0034] Example 1, please refer to Figure 1 、 Figure 2 and Figure 3In an embodiment of the present application, a laser cutting device for large pipes is provided, comprising: a supporting and transporting device 1 and a rotary cutting device 2, wherein the supporting and transporting device 1 is used to support the pipe 3 and allow the pipe 3 to move along the length direction of the supporting and transporting device 1, the rotary cutting device 2 is hollow inside, and the rotary cutting device 2 is assembled on the supporting and transporting device, the rotary cutting device 2 comprises a cutting track 21 having a partial annular shape and a laser cutting device 22, the cutting track 21 is coaxial with the pipe 3, the laser cutting device 22 is configured to move along the cutting track 21 and cut the pipe 3 circumferentially, the laser cutting device 22 It includes two mutually perpendicular arrangements. The laser cutting device 22 is arranged at the midpoint of the chord of the cutting track 21, so that the light beam emitted by the laser generator can hit the surface of the tube 3 vertically. By driving the L-shaped frame 24 to rotate around the tube 3, the laser cutting device 22 is driven to rotate so that it is always perpendicular to the surface of the tube 3. Compared with the 360° rotation of the tube 1222, the small rotation of the laser cutting device 22 consumes less energy and has higher cutting efficiency. At the same time, the cutting speed of the device on the tube 3 can be controlled more accurately. The laser beam is always perpendicular to the surface of the tube 3, which makes the cutting seam more regular and the cutting efficiency higher.

[0035] See also Figure 2 、 Figure 3 and Figure 5, the rotary cutting equipment 2 also includes: a hollow frame 23, an L-shaped frame 24 and a walking drive device 25, the hollow frame 23 is assembled on the supporting and transporting device 1, the cutting track 21 is assembled on the inner wall of the hollow frame 23, a rectangular opening is opened on one side of the outer side of the hollow frame 23, and a glass plate 231 is assembled at the rectangular opening, the L-shaped frame 24 is assembled on the inner wall of the cutting track 21, the L-shaped frame 24 includes two mutually perpendicular vertical sections 241 and a horizontal section 242, the lengths of the vertical section 241 and the horizontal section 242 are equal to the chord length of the circle where the cutting track 21 is located, the two laser cutting equipment 22 are respectively assembled at the midpoints of the vertical section 241 and the horizontal section 242, the walking drive device 25 includes a driving gear 251 and a driving motor 252, the driving gear 251 is rotated by a rotating shaft 253 and is assembled on the vertical section 241 and the horizontal section At the connection of the horizontal section 242, the drive motor 252 is assembled on one side of the L-shaped frame 24, and the drive shaft of the drive motor 252 is coaxially connected and fixed with the rotating shaft 253. The ends of the vertical section 241 and the horizontal section 242 that are away from each other are respectively rotatably connected with a driven gear 254. A tooth groove 211 is provided on the inner wall of the cutting track 21, and the tooth groove 211 is engaged with the drive gear 251 and the driven gear 254. By assembling the laser cutting equipment 22 in the middle part of the L-shaped frame 24, when the laser cutting equipment 22 rotates along the cutting track 21, the laser beam emitted can always be perpendicular to the surface of the pipe 3, so that the laser heat is more concentrated, so that when cutting the pipe 3, the cutting seam is more regular and the energy utilization rate is higher. At the same time, the drive motor 252 drives the L-shaped frame 24. Compared with driving the pipe 3, the required energy consumption is greatly reduced, thereby improving economic benefits.

[0036] See also Figure 3 and Figure 6The vertical section 241 and the horizontal section 242 are provided with an interlayer 243. The vertical section 241 and the horizontal section 242 are provided with a rectangular placement groove at the midpoint of the interlayer 243. A rubber layer 244 is provided inside the rectangular placement groove. The two laser cutting devices 22 are respectively mounted on the rubber layer 244. The driving gear 251 is mounted in the interlayer 243. The driving shaft of the driving motor 252 passes through one side of the L-shaped frame 24 and is coaxially connected and fixed to the driving gear 251. The vertical section 241 and the horizontal section 242 are provided with multiple sets of limit members 26 at the interlayer 243. The multiple sets of limit members 26 are respectively located on one side of the driving gear 251 or the driven gear 254 in a one-to-one correspondence. By assembling the laser cutting equipment 22 on the rubber layer 244 in the interlayer 243, the assembly stability of the laser cutting equipment 22 is ensured. The rubber layer 244 can also be used to absorb the vibration generated by the laser cutting equipment 22 during cutting, thereby reducing the noise generated by the device when cutting the pipe 3.

[0037] See also Figure 6 The limiting member 26 includes: a fixing seat 261 and a ball 262. A spherical cavity is provided inside the fixing seat 261. There are two fixing seats 261. The two fixing seats 261 are relatively assembled on the inner wall of the interlayer 243 of the L-shaped frame 24. The ball 262 is arranged in the spherical cavity. One end of the ball 262 protrudes from the spherical cavity and conflicts with the two sides of the cutting track 21. By setting the limiting member 26, the L-shaped frame 24 can be stably assembled on the cutting track 21 so that it will not deflect. At the same time, the ball 262 can effectively reduce the resistance encountered by the L-shaped frame 24 when it moves along the cutting track 21.

[0038] See also Figure 5 A notch 212 is provided on one side of the cutting track 21, and the angle a of the notch 212 satisfies 0≤a≤90°. By providing the notch 212 on one side of the cutting track 21, the pipe 3 can be unloaded from the notch 212, so that the device has a variety of unloading methods. At the same time, the notch 212 can also cooperate with the two laser cutting devices 22 on the L-shaped frame 24, so that the laser cutting device 22 can perform 360° cutting around the pipe 3.

[0039] Example 2: The structure of Example 2 is basically the same as that of Example 1, except that: See also Figure 7The cutting track 21 is provided with partially circular sound-absorbing cotton strips 213 on both sides close to the inner circle. The ball 262 conflicts with the sound-absorbing cotton strips 213. When the ball 262 moves on the cutting track 21, it can conflict with the suction cotton strips. Therefore, on the basis of not hindering the walking function of the L-shaped frame 24, the noise generated by the laser cutting equipment 22 during cutting is reduced through the absorption effect of the noise-absorbing cotton strips 213.

[0040] See also Figure 4 , the supporting and transporting device 1 is provided with two, respectively located on both sides of the rotary cutting equipment 2, the supporting and transporting device 1 comprises: a support frame 11 and a roller assembly 12, the support frame 11 is arranged on one side of the hollow frame 23, one end of the support frame 11 extends to the interior of the hollow frame 23 and is located on one side of the cutting track 21, the roller assembly 12 is provided with a plurality of, a plurality of roller assemblies 12 are assembled at the upper end of the support frame 11 at intervals along the length direction of the support frame 11, the roller assembly 12 comprises: a roller frame 121 and a roller 122, the roller frame 121 is assembled at the upper end of the support frame 11, the roller 122 is rotatably assembled on the roller frame 121, and the track composed of a plurality of rollers 122 is used to limit the position of the pipe 3 while the pipe 3 can keep feeding under the rotation of the roller 122. Compared with the sliding friction resistance, the pipe 3 is subjected to less resistance, which makes it more convenient for the pipe 3 to walk.

[0041] Among them, the support frame 11 can be adjusted in height. By setting an adjustable base with adjustable height under the support frame 11, the height of the entire support frame 11 can be adjusted. Among them, the assembly method of the height-adjusting base is a conventional technical means for technical personnel in this field, so it will not be repeated again.

[0042] Please continue reading Figure 4 The supporting and transporting device 1 also includes a driving wheel assembly 13, which includes a driving frame 131 and a servo motor 132. The driving frame 131 is assembled on one end of the supporting frame 11, and a rotating shaft 133 is rotatably assembled in the driving frame 131. The roller 122 is coaxially sleeved on the rotating shaft 133, and one end of the rotating shaft 133 protrudes from the driving frame 131. The servo motor 132 is assembled below the supporting frame 11, and a transmission belt 134 is sleeved between the driving shaft of the servo motor 132 and one end of the rotating shaft 133. By setting a roller 122 connected to the servo motor 132 for transmission, the roller 122 uses friction as power, so that the pipe 3 can keep feeding along the length direction of the supporting frame 11.

[0043] See also Figure 1 and Figure 8The support frame 11 is also equipped with a clamping mechanism 14, and the clamping mechanism 14 includes: a support column 141 and an L-shaped height limiting frame 142, the support column 141 is fixedly assembled on the support frame 11 in the vertical direction, and a columnar cavity 1421 is opened at one end of the L-shaped height limiting frame 142, and the L-shaped height limiting frame 142 is sleeved on the support column 141, and an elastic member 143 is provided inside the columnar cavity 1421, and the two ends of the elastic member 143 are respectively connected and fixed to the support column 141 and the L-shaped height limiting frame 142, and the other end of the L-shaped height limiting frame 142 is fixedly connected to a connecting frame 144 on one side of the support frame 11, and the roller 122 is rotatably assembled inside the connecting frame 144. By adopting the L-shaped height limiting frame 142, the L-shaped height limiting frame 142 can be buckled above the pipe 3, and the elastic member 143 provides a certain downward pressure on the pipe 3, making the pipe 3 more stable when placed.

[0044] In this embodiment, the elastic member 143 may be a telescopic spring or a gas spring.

[0045] See also Figure 9 and Figure 10 The roller 122 includes: a conical wheel 1221 and a rotating tube 1222. The conical wheels 1221 are provided with two, and the two conical wheels 1221 are arranged opposite to each other. The conical wheel 1221 has a cylindrical threaded cavity inside, and the rotating tube 1222 has a threaded surface. The conical wheel 1221 is sleeved on the outside of the rotating tube 1222 and is threadedly connected to the rotating tube 1222. The threads of the conical wheels 1221 relative to each other are connected to the outside of the rotating tube 1222. The distance between the two conical wheels 1221 can be adjusted according to the actual diameter specifications of the pipe 3. For the support frame 11 and the connecting frame 144, the rotating tube 1222 is rotatably assembled on the support frame 11 and the connecting frame 144 respectively. For the driving frame 131, the rotating tube 1222 is fixedly assembled on the driving shaft, which enables the conical wheels 1221 to adjust the relative distance while ensuring that they can rotate in the support frame 11, the connecting frame 144 and the driving frame 131.

[0046] To sum up, when it is necessary to perform circumferential cutting on the surface of the pipe 3, the roller 122 is driven to rotate by the driving motor 252, and the roller 122 drives the pipe 3 arranged above it to move. Since the pipe 3 is coaxial with the cutting track 21, the pipe 3 can be inserted into the cutting track 21. At this time, the driving motor 252 controls the driving gear 251 to rotate, and the driving gear 251 engages with the tooth groove 211, thereby driving the entire L-shaped frame 24 to rotate around the inner wall of the cutting track 21. By controlling the forward and reverse rotation of the driving motor 252, the L-shaped frame 24 is controlled to rotate clockwise or counterclockwise along the cutting track 21, thereby driving the two laser cutting devices 22 to perform 360° cutting on the surface of the pipe 3.

[0047] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A laser cutting device for large pipes, characterized in that: include: A supporting and transporting device (1), wherein the supporting and transporting device (1) is used to support the pipe and enable the pipe to move along the length direction of the supporting and transporting device (1); A rotary cutting device (2) with a hollow interior is mounted on a supporting and transporting device. The rotary cutting device (2) comprises a cutting track (21) having a partial annular shape and a laser cutting device (22). The cutting track (21) is coaxial with the pipe. The laser cutting device (22) is configured to move along the cutting track (21) and cut the pipe circumferentially. The laser cutting device (22) comprises two mutually perpendicularly arranged laser cutting devices (22). The laser cutting device (22) is arranged at the midpoint of the chord of the cutting track (21), so that the light beam emitted by the laser generator can hit the pipe surface vertically.

2. The laser cutting equipment for large pipes according to claim 1, characterized in that: The rotary cutting device (2) further comprises: A hollow frame (23), wherein the hollow frame (23) is mounted on the supporting and transporting device (1), the cutting track (21) is mounted on the inner wall of the hollow frame (23), a rectangular opening is provided on one side of the outer portion of the hollow frame (23), and a glass plate (231) is mounted on the rectangular opening; An L-shaped frame (24), the L-shaped frame (24) being mounted on the inner wall of the cutting track (21), the L-shaped frame (24) comprising two mutually perpendicular vertical sections (241) and a horizontal section (242), the lengths of the vertical section (241) and the horizontal section (242) being equal to the chord length of the circle on which the cutting track (21) is located, and the two laser cutting devices (22) being mounted on the midpoints of the vertical section (241) and the horizontal section (242), respectively; A travel drive device (25) includes a drive gear (251) and a drive motor (252). The drive gear (251) is rotatably assembled at the connection between the vertical section (241) and the horizontal section (242) via a rotating shaft (253). The drive motor (252) is assembled on one side of the L-shaped frame (24). The drive shaft of the drive motor (252) is coaxially connected and fixed to the rotating shaft (253). The ends of the vertical section (241) and the horizontal section (242) that are away from each other are respectively rotatably connected to driven gears (254). A tooth groove (211) is provided on the inner wall of the cutting track (21). The tooth groove (211) is meshed with the drive gear (251) and the driven gear (254).

3. The laser cutting equipment for large pipes according to claim 2, characterized in that: An interlayer (243) is provided inside the vertical section (241) and the horizontal section (242). A rectangular placement groove is provided at the midpoint of the interlayer (243) of the vertical section (241) and the horizontal section (242). A rubber layer (244) is provided inside the rectangular placement groove. The two laser cutting devices (22) are respectively assembled on the rubber layer (244). The driving gear (251) is assembled in the interlayer (243). The driving shaft of the driving motor (252) passes through one side of the L-shaped frame (24) and is coaxially connected and fixed to the driving gear (251). The vertical section (241) and the horizontal section (242) are provided with multiple groups of limiting members (26) at the interlayer (243). The multiple groups of limiting members (26) are respectively located on one side of the driving gear (251) or the driven gear (254) in a one-to-one correspondence.

4. The laser cutting equipment for large pipes according to claim 3, characterized in that: The limiting member (26) comprises: A fixing seat (261) with a spherical cavity is provided inside, and two fixing seats (261) are provided. The two fixing seats (261) are relatively mounted on the inner wall of the interlayer (243) of the L-shaped frame (24); A ball (262) is disposed in the spherical cavity, one end of the ball (262) protrudes from the spherical cavity and contacts both sides of the cutting track (21).

5. The laser cutting equipment for large pipes according to claim 1, characterized in that: A notch (212) is provided on one side of the cutting track (21), and an angle a of the notch (212) satisfies 0≤a≤90°.

6. The laser cutting equipment for large pipes according to claim 4, characterized in that: The cutting track (21) is provided with partially circular sound-absorbing cotton strips (213) on both sides close to the inner circle, and the rolling balls (262) and the sound-absorbing cotton strips (213) are in conflict with each other.

7. The laser cutting equipment for large pipes according to claim 2, characterized in that: The supporting and transporting devices (1) are provided with two, respectively located on both sides of the rotary cutting device (2), and the supporting and transporting devices (1) include: A support frame (11), the support frame (11) is arranged on one side of the hollow frame (23), one end of the support frame (11) extends into the interior of the hollow frame (23) and is located on one side of the cutting track (21); A roller assembly (12), wherein the roller assembly (12) is provided with a plurality of roller assemblies (12), and the plurality of roller assemblies (12) are assembled at intervals on the upper end of the support frame (11) along the length direction of the support frame (11), and the roller assembly (12) comprises: a roller frame (121) and a roller (122), the roller frame (121) is assembled on the upper end of the support frame (11), and the roller (122) is rotatably assembled on the roller frame (121).

8. The laser cutting equipment for large pipes according to claim 7, characterized in that: The supporting and transporting device (1) further comprises a driving wheel assembly (13), the driving wheel assembly (13) comprising a driving frame (131) and a servo motor (132), the driving frame (131) being mounted on one end of the supporting frame (11), a rotating shaft (133) being rotatably mounted in the driving frame (131), the roller (122) being coaxially sleeved on the rotating shaft (133), one end of the rotating shaft (133) protruding from the driving frame (131), the servo motor (132) being mounted below the supporting frame (11), and a transmission belt (134) being sleeved between the driving shaft of the servo motor (132) and one end of the rotating shaft (133).

9. The laser cutting equipment for large pipes according to claim 7, characterized in that: The support frame (11) is further equipped with a clamping mechanism (14), and the clamping mechanism (14) comprises: A support column (141), wherein the support column (141) is fixedly mounted on the support frame (11) in a vertical direction; An L-shaped height limiting frame (142) is provided at one end of the L-shaped height limiting frame (142), and the L-shaped height limiting frame (142) is sleeved on the support column (141). An elastic member (143) is provided inside the columnar cavity (1421), and both ends of the elastic member (143) are respectively connected and fixed to the support column (141) and the L-shaped height limiting frame (142). The other end of the L-shaped height limiting frame (142) is fixedly connected to a connecting frame (144) on a side close to the support frame (11), and the roller (122) is rotatably assembled inside the connecting frame (144).

10. The laser cutting equipment for large pipes according to claim 7, characterized in that: The roller (122) comprises: A conical wheel (1221), wherein two conical wheels (1221) are provided, the two conical wheels (1221) are arranged opposite to each other, and a columnar threaded cavity is provided inside the conical wheel (1221); The rotating tube (1222) is provided with a thread on the outside of the rotating tube (1222); the conical wheel (1221) is sleeved on the outside of the rotating tube (1222) and is threadedly connected to the rotating tube (1222).

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