A laser cutting device for pipe fittings

Abstract

The present invention relates to the field of laser cutting technology, and discloses a laser cutting device for pipe fittings, comprising a pipe body; a laser cutting head for cutting the pipe body; and a cutting mechanism disposed on the pipe body, the cutting mechanism comprising an arc-shaped connecting seat disposed on the outer side of the pipe body and a flexible toothed belt disposed around the outer circumference of the pipe body, wherein the laser cutting head is disposed on the arc-shaped connecting seat, and two sets of connecting arms are symmetrically disposed on the arc-shaped connecting seat, the ends of the connecting arms being rotatably provided with rollers, the rollers being in contact with the outer circumference of the pipe body, the rollers being rotatably connected to the connecting arms via shafts, one set of connecting arms being mounted with a motor, the output end of the motor being fixed to one end of the corresponding shaft. The present invention, by providing the cutting mechanism and utilizing the deformation characteristics of the flexible toothed belt, can adapt to pipes of different diameters. At the same time, the laser cutting head rotates around the outer circumference of the pipe body along with the arc-shaped connecting seat, and its motion trajectory is kept coaxial with the pipe body through meshing transmission between a gear and the flexible toothed belt.

Description

Technical Field

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

[0002] For cutting metal pipes, laser cutting is widely used in the industry. The principle of laser cutting of metal pipes is to use a high-energy-density laser beam as a cutting tool. Through an optical system composed of lenses and reflectors, the laser beam is precisely focused on the pipe wall surface of the metal pipe, so that the focused area forms an extremely small action point. At this action point, the energy released by the laser beam is rapidly absorbed by the pipe wall material, instantly causing the metal material to reach a melting or even vaporizing temperature, thereby achieving local removal of the material. With the relative movement between the laser beam and the pipe, a continuous incision is formed on the pipe wall, thereby completing the cutting operation of the metal pipe.

[0003] The existing publication number CN116571897A discloses a device for laser cutting products on a PE polyethylene pipe production line, including a support frame, a first N-shaped frame and a second N-shaped frame are slidably connected on both sides of the support frame, the first N-shaped frame and the second N-shaped frame are both fixedly connected to a first support plate, the first support plate is slidably connected to a symmetrical second sliding block, the second sliding block on the upper side is fixedly connected to a second connecting plate, the second connecting plate is rotatably connected to a driving roller, the driving roller is arranged in a truncated cone shape, the second connecting plate is fixedly connected to a second driving motor whose output shaft is fixed to the driving roller, the fixed rod is slidably connected to the first sliding frame, the first sliding frame is rotatably connected to a friction wheel, and the driving roller is in extrusion contact with the adjacent friction wheel; although the above technical solution can detect the wall thickness of the PE polyethylene pipe by the distance that the fixed block squeezes the sliding column downward, the transmission ratio between the driving roller and the friction wheel is changed to improve the cutting effect of the laser cutting head on the PE polyethylene pipe.

[0004] However, in the prior art, when performing circular laser cutting operations on pipe fittings, in order to ensure cutting accuracy, the pipe fittings need to be clamped to prevent them from displacement or shaking during the cutting process. However, the existing clamping mechanisms mostly use rigid clamps, which are usually only adaptable to pipes within a specific diameter range. When faced with pipes of different diameters, the clamps need to be frequently replaced, which is cumbersome to operate and has poor adaptability. At the same time, the circular cutting track of the laser cutting equipment in the prior art is mostly fixed and usually separated from the rigid clamp, and the diameter and center position of the track are difficult to adaptively adjust with changes in the pipe diameter. As a result, when cutting pipes of different diameters, it is difficult to ensure the coaxiality of the motion trajectory of the cutting head and the pipe, which in turn causes problems such as deflection and irregularity in the circular incision after cutting, affecting the subsequent assembly accuracy and performance of the pipe. Summary of the Invention

[0005] The purpose of the present invention is to provide a laser cutting device for pipe fittings to solve the problem in the prior art proposed in the above background technology that the rigid clamp has a small adaptation range and the cutting track cannot be adaptively adjusted with the pipe diameter, resulting in poor coaxiality.

[0006] The present invention provides a laser cutting device for pipe fittings, which adopts the following technical solutions:

[0007] A laser cutting device for pipe fittings, comprising:

[0008] tube body;

[0009] The laser cutting head is used to cut the tube body and also includes:

[0010] A cutting mechanism is provided on the tube body, and the cutting mechanism includes an arc-shaped connecting seat provided on the outside of the tube body and a flexible toothed belt arranged along the outer peripheral surface of the tube body, wherein the laser cutting head is provided on the arc-shaped connecting seat, and two groups of connecting arms are symmetrically provided on the arc-shaped connecting seat, and rollers are rotatably provided at the ends of the connecting arms, and the rollers are in contact with the outer peripheral surface of the tube body, and the rollers are rotatably connected to the connecting arms through shafts, and a motor is installed on one group of connecting arms, and the output end of the motor is fixed to one end of the corresponding shaft, and the other ends of the two groups of shafts extend to the outside of the connecting arm and are fixed with gear 1, and gear 1 is meshed with the tooth surface of the flexible toothed belt, and two groups of main shafts are symmetrically fixed on the arc-shaped connecting seat, and a guide wheel is rotatably sleeved on the main shaft, and the guide wheel is in sliding contact with the non-tooth surface of the flexible toothed belt;

[0011] A support mechanism is provided on the tube body, comprising a limit plate provided on the tube body, a through slot provided on the limit plate, positioning wheels symmetrically arranged in the through slot, and a flexible binding belt passing through the positioning wheels and wrapped around the outer circumference of the tube body;

[0012] The flexible toothed belt and the flexible binding belt are both provided with a winding mechanism, and the winding mechanism is used to adjust the tension of the flexible toothed belt and the flexible binding belt respectively.

[0013] Furthermore, the winding mechanism includes an outer shell and a cover plate arranged on one side of the outer shell, one end of the flexible toothed belt and the flexible strap are respectively fixedly connected to the side wall of the corresponding outer shell, a winding shaft is rotatably provided in the outer shell, the other ends of the flexible toothed belt and the flexible strap are respectively fixed on the surface of the corresponding winding shaft, and are wound on the corresponding winding shaft in a winding manner, one end of the winding shaft passes through the outside of the outer shell and is fixed with gear 2, gear 2 is meshed with gear 3, gear 3 is rotatably connected to the outer shell through a connecting shaft, and one end of the connecting shaft extends to the outside of the cover plate and is fixed with handle 1.

[0014] Furthermore, a curved track is provided on one side of the limiting plate close to the curved connecting seat, a curved sliding rod is slidably connected in the track, and one end of the curved sliding rod is fixed on the corresponding main shaft.

[0015] Furthermore, a compensation mechanism is provided on the arc-shaped connecting seat, and the compensation mechanism includes an arc-shaped groove opened on the arc-shaped connecting seat, an arc-shaped tooth plate slidingly connected in the arc-shaped groove, a sliding column fixed on the arc-shaped tooth plate, and a bracket fixedly connected to the sliding column, and the laser cutting head is installed on the bracket.

[0016] Furthermore, the arc-shaped tooth plate is engaged with gear four, which is rotatably connected to the notch opened in the arc-shaped connecting seat through a rotating rod. A worm wheel is fixed on the rotating rod, and a worm is engaged with one side of the worm wheel. One end of the worm extends outside the arc-shaped connecting seat and is fixed with a turning handle two.

[0017] Furthermore, a ratchet is fixed on the connecting shaft, a pawl is provided on the outer periphery of the ratchet, the pawl is rotatably connected to the outer shell via a rotating shaft, one end of the rotating shaft extends outside the cover plate, a bump is fixed on the outer shell, and a spring is provided between the bump and the pawl.

[0018] Furthermore, two sets of side plates are symmetrically fixed on the winding shaft, and the side plates are used to limit the winding parts of the flexible toothed belt and the flexible binding belt.

[0019] Furthermore, a slide rail for sliding the slide column is provided on one side of the arc-shaped connecting seat close to the limiting plate.

[0020] Furthermore, an anti-slip layer is provided on one side of the limiting plate close to the outer peripheral surface of the tube body.

[0021] Furthermore, the side of the connecting arm away from the roller is rotatably connected to the arc-shaped connecting seat through a rotating rod, and both ends of the rotating rod are provided with a torsion spring, and the two ends of the torsion spring are respectively fixed on the connecting arm and the arc-shaped connecting seat.

[0022] Beneficial effects of the present invention:

[0023] 1. By setting up a cutting mechanism and utilizing the deformation characteristics of the flexible toothed belt, it can adapt to pipes of different diameters, effectively solving the problems of narrow adaptation range and cumbersome replacement operation of existing rigid fixtures, and significantly improving the adaptability to pipes of different specifications. At the same time, the laser cutting head rotates around the outer circumference of the pipe body along with the arc-shaped connecting seat, and its motion trajectory is kept coaxial with the pipe body through the meshing transmission of gear 1 and the flexible toothed belt, solving the problem of difficulty in ensuring the coaxiality of the existing fixed track and the pipe, and further improving the regularity of the annular incision after cutting.

[0024] 2. By providing a support mechanism and utilizing the flexible characteristics of the flexible strap, the limit plate can be closely fitted to the outer surface of pipes of different diameters. The sliding cooperation between the arc-shaped slide bar and the track can support the pipe body during cutting. When the pipe body is about to be cut, it can effectively avoid deformation of the port or surface damage caused by falling due to gravity, further ensuring cutting safety.

[0025] 3. By setting up a winding mechanism, the tension of the flexible strap and the flexible toothed belt can be flexibly adjusted through the winding mechanism to adapt to pipes of different diameters, and the locking function of the ratchet and pawl can stably maintain the tension state of the belt, preventing the displacement of the pipe body due to loosening of the belt during the cutting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 2 It is a schematic diagram of the three-dimensional structure of the laser cutting head, cutting mechanism and winding mechanism of the present invention;

[0028] Figure 3 It is a partial cross-sectional schematic diagram of the three-dimensional structure of the arc-shaped connecting seat of the present invention;

[0029] Figure 4 It is a schematic diagram of the three-dimensional structure of the support mechanism of the present invention;

[0030] Figure 5 It is a schematic diagram of the three-dimensional structure of the guide wheel, arc-shaped sliding rod, limiting plate, track and anti-slip layer of the present invention;

[0031] Figure 6 It is a schematic diagram of the three-dimensional structure of the housing and the cover plate of the present invention;

[0032] Figure 7 It is a schematic cross-sectional view of the three-dimensional structure of the housing of the present invention;

[0033] Figure 8 It is a schematic diagram of the three-dimensional structure of the winding mechanism of the present invention;

[0034] Figure 9 This is a schematic diagram of the three-dimensional structure of the arc-shaped connecting seat, laser cutting head and compensation mechanism of the present invention;

[0035] Figure 10 It is a schematic cross-sectional view of the three-dimensional structure of the arc-shaped connecting seat of the present invention;

[0036] Figure 11 This is a schematic diagram of the three-dimensional structure of the laser cutting head and compensation mechanism of the present invention;

[0037] Figure 12 A schematic diagram showing the rotation state of the three-dimensional structure of the arc-shaped connecting seat and the laser cutting head of the present invention;

[0038] Figure 13 It is a schematic diagram showing the rotating state of the three-dimensional structure of the laser cutting head of the present invention.

[0039] In the picture:

[0040] 100, tube body; 200, laser cutting head; 300, cutting mechanism; 301, arc-shaped connecting seat; 302, connecting arm; 3021, rotating rod; 3022, torsion spring; 303, roller; 304, shaft; 305, motor; 306, gear 1; 307, flexible toothed belt; 308, main shaft; 309, guide wheel; 310, arc-shaped slide bar; 311, slide rail; 400, support mechanism; 401, limit plate; 402, through groove; 403, positioning wheel; 404, flexible strap; 405, track; 406, anti-slip layer; 5 00, winding mechanism; 501, housing; 502, cover plate; 503, winding shaft; 504, gear two; 505, gear three; 506, connecting shaft; 5061, ratchet; 5062, pawl; 5063, rotating shaft; 5064, bump; 5065, spring; 507, turning handle one; 508, side plate; 600, compensation mechanism; 601, arc groove; 602, arc tooth plate; 603, sliding column; 604, bracket; 605, gear four; 606, rotating rod; 607, worm wheel; 608, worm; 609, turning handle two. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0042] Reference Figure 1 The present invention provides a laser cutting device for pipe fittings, including a pipe body 100 and a laser cutting head 200, wherein the laser cutting head 200 is used to cut the pipe body 100.

[0043] Reference Figure 1-Figure 3, also includes a cutting mechanism 300, which is provided on the tube body 100. Specifically, the cutting mechanism 300 includes an arc-shaped connecting seat 301 provided on the outside of the tube body 100 and a flexible toothed belt 307 arranged around the outer circumference of the tube body 100, wherein the laser cutting head 200 is provided on the arc-shaped connecting seat 301, so that the movement of the arc-shaped connecting seat 301 drives the laser cutting head 200 to cut the tube body 100, and two groups of connecting arms 302 are symmetrically provided on the arc-shaped connecting seat 301. The end of the connecting arm 302 is rotatably provided with a roller 303, and the roller 303 abuts against the outer circumference of the tube body 100. The roller 303 is connected to the outer circumference of the tube body 100 through the shaft 30 The connecting arms 302 are rotatably connected to each other. A motor 305 is mounted on one set of the connecting arms 302. The output end of the motor 305 is fixed to one end of the corresponding shaft 304. The other ends of the two sets of shafts 304 extend outside the connecting arms 302 and are fixed with a gear 1 306. The gear 1 306 meshes with the tooth surface of the flexible toothed belt 307 to form a meshing transmission. Two sets of main shafts 308 are symmetrically fixed to the arc-shaped connecting seat 301. A guide wheel 309 is rotatably sleeved on the main shaft 308. The guide wheel 309 is in sliding contact with the non-tooth surface of the flexible toothed belt 307, and the direction of the flexible toothed belt 307 is constrained by the guide wheel 309.

[0044] During operation, the deformation characteristics of the flexible toothed belt 307 are utilized to adapt to tube bodies 100 of different diameters, thereby realizing flexible clamping of the tube body 100. At the same time, the motor 305 drives the shaft 304 and the gear 1 306 to rotate, and the engagement of the gear 1 306 and the flexible toothed belt 307 drives the arc-shaped connecting seat 301 to rotate around the outer circumference of the tube body 100, so that the laser cutting head 200 performs circular cutting along the outer circumference of the tube body 100. The roller 303 rolls along the surface of the tube body 100 as the arc-shaped connecting seat 301 rotates, so as to assist in supporting the arc-shaped connecting seat 301 and reduce its movement resistance.

[0045] Among them, it should be noted that the side of the connecting arm 302 away from the roller 303 is rotatably connected to the arc-shaped connecting seat 301 through the rotating rod 3021, and both ends of the rotating rod 3021 are provided with a torsion spring 3022, and the two ends of the torsion spring 3022 are respectively fixed on the connecting arm 302 and the arc-shaped connecting seat 301. Through the elastic control of the torsion spring 3022, the connecting arm 302 drives the roller 303 to automatically adapt to tube bodies 100 of different diameters. When the diameter of the tube body 100 is larger, the outer wall of the tube body 100 will generate an outward thrust on the roller 303, forcing the connecting arm 302 to swing outward around the rotating rod 3021. At this time, the torsion spring 3022 is further twisted to generate a reverse elastic force, so that the roller 303 always remains in a pressed state with the outer surface of the tube body 100.

[0046] Reference Figure 1 、 Figure 4-Figure 5The tube body 100 is also provided with a support mechanism 400. Specifically, the support mechanism 400 includes a limiting plate 401 provided on the tube body 100, a through slot 402 provided on the limiting plate 401, a positioning wheel 403 symmetrically arranged in the through slot 402, and a flexible strap 404 passing through the positioning wheel 403 and wrapped around the outer peripheral surface of the tube body 100, wherein the limiting plate 401 is correspondingly installed on the outside of the portion of the tube body 100 that needs to be cut, and the positioning wheel 403 is rotatably connected in the through slot 402 through a bearing, which is used to guide the direction of the flexible strap 404 to prevent the flexible strap 404 from deflecting when subjected to force. The flexible strap 404 utilizes its own flexibility to closely fit the tube body 100 of different diameters.

[0047] The limiting plate 401 is provided with an arc-shaped track 405 on one side close to the arc-shaped connecting seat 301. An arc-shaped slide bar 310 is slidably connected to the track 405. One end of the arc-shaped slide bar 310 is fixed on a corresponding set of spindles 308. During operation, when the arc-shaped connecting seat 301 drives the laser cutting head 200 to perform annular cutting around the outer circumference of the tube body 100, the spindle 308 rotates together with the arc-shaped connecting seat 301. As the cutting continues, when the arc-shaped connecting seat 301 rotates 270 degrees, the cut portion of the tube body 100 is It is connected to the tube body 100 only by a small amount of material. At this time, the arc-shaped slide bar 310 slides and docks in the track 405, and the cut part of the tube body 100 is supported by the flexible strap 404, thereby avoiding deformation of the port caused by the cut part of the tube body 100 falling immediately due to its own gravity. At the same time, it also prevents accidental damage to the equipment or operators during the falling process, and the flexible contact of the flexible strap 404 will not cause scratches on the outer surface of the tube body 100, further ensuring the quality of the tube body 100 after cutting.

[0048] Among them, an anti-slip layer 406 is provided on the side of the limiting plate 401 close to the outer peripheral surface of the tube body 100. The anti-slip layer 406 can be rubber. When the flexible strap 404 presses the limiting plate 401 against the tube body 100, the anti-slip layer 406 can increase the friction between the two.

[0049] Reference Figure 2 、 Figure 6-Figure 8 The flexible toothed belt 307 and the flexible binding belt 404 are both provided with a winding mechanism 500, and the winding mechanism 500 is used to adjust the tension of the flexible toothed belt 307 and the flexible binding belt 404 respectively, so as to achieve adaptive clamping of tubes 100 with different diameters.

[0050] Specifically, the winding mechanism 500 includes a housing 501 and a cover plate 502 arranged on one side of the housing 501. One end of the flexible toothed belt 307 and the flexible strap 404 are respectively fixedly connected to the side wall of the corresponding housing 501 to form a fixed end. A winding shaft 503 is rotatably connected to the housing 501 through a bearing. The other ends of the flexible toothed belt 307 and the flexible strap 404 are respectively fixed to the surface of the corresponding winding shaft 503 and are wound around the corresponding winding shaft 503 in a winding manner. One end of the winding shaft 503 passes through the housing 501. 01 and fixed with gear 2 504, gear 3 505 is engaged with gear 2 504, gear 3 505 is rotatably connected to the housing 501 through a connecting shaft 506, one end of the connecting shaft 506 extends to the outside of the cover 502 and is fixed with a turning handle 1 507. During operation, the operator turns the turning handle 1 507 to drive gear 3 505 to rotate through the connecting shaft 506, and gear 3 505 drives gear 2 504 and the winding shaft 503 to rotate synchronously, thereby realizing the winding or releasing of the flexible toothed belt 307 or the flexible strap 404.

[0051] Furthermore, a ratchet 5061 is fixed on the connecting shaft 506, and a pawl 5062 is provided on the outer periphery of the ratchet 5061. The pawl 5062 is rotatably connected to the housing 501 through a rotating shaft 5063. One end of the rotating shaft 5063 extends to the outside of the cover 502, so that the operator can control the state of the pawl 5062 by rotating the rotating shaft 5063. A protrusion 5064 is fixed on the housing 501, and the protrusion 5064 is located on one side of the pawl 5062. A spring 5065 is provided between the protrusion 5064 and the pawl 5062. Under the elastic force of the spring 5065, the end of the pawl 5062 abuts against the ratchet teeth of the ratchet 5061 to form a rigid stop, thereby locking the connecting shaft 506.

[0052] Two sets of side plates 508 are symmetrically fixed on the winding shaft 503 , and the side plates 508 are used to limit the winding parts of the flexible toothed belt 307 and the flexible binding belt 404 .

[0053] Reference Figures 9-13, a compensation mechanism 600 is provided on the arc-shaped connecting seat 301. Specifically, the compensation mechanism 600 includes an arc groove 601 provided on the arc-shaped connecting seat 301, an arc-shaped tooth plate 602 slidably connected to the arc groove 601, a sliding post 603 fixed on the arc-shaped tooth plate 602, and a bracket 604 fixedly connected to the sliding post 603. Among them, the bracket 604 is located on the side of the arc-shaped connecting seat 301 close to the limit plate 401, and the side of the arc-shaped connecting seat 301 close to the limit plate 401 is provided with a slide rail 311 for the sliding post 603 to slide. The slide rail 311 is arc-shaped, and the laser cutting head 200 is installed on the bracket 604. The bracket 604 moves synchronously with the sliding post 603, so that the cutting focus of the laser cutting head 200 is always aligned with the cutting track of the tube body 100. The arc-shaped tooth plate 602 is meshed with a gear four 605, and the gear four 605 is rotatably connected to the In the notch opened in the arc-shaped connecting seat 301, a worm gear 607 is fixed on the rotating rod 606, and a worm 608 is engaged on one side of the worm gear 607. One end of the worm 608 extends to the outside of the arc-shaped connecting seat 301 and is fixed with a second turning handle 609. When the arc-shaped connecting seat 301 drives the laser cutting head 200 to perform circular cutting along the outer circumference of the tube body 100 and moves to the position of the winding mechanism 500, the operator rotates the second turning handle 609, and drives the worm gear 607 and the rotating rod 606 to rotate through the worm 608. The rotating rod 606 drives the gear four 605 to rotate synchronously. The engagement of the gear four 605 with the arc-shaped tooth plate 602 causes the arc-shaped tooth plate 602 to slide along the arc groove 601, and drives the bracket 604 and the laser cutting head 200 to continue to move along the arc track through the sliding column 603, so that the laser cutting head 200 completes compensatory cutting of the remaining uncut area of ​​the tube body 100.

[0054] The present invention provides a laser cutting device for pipe fittings. The working principle is as follows: First, the two ends of the pipe body 100 are erected by external support frames to keep the pipe body 100 in a horizontal state. Then, the arc-shaped connecting seat 301 and the limit plate 401 are relatively installed on the pipe body 100, wherein the limit plate 401 is correspondingly installed on the outer side of the portion of the pipe body 100 to be cut. After the installation is completed, the winding shaft 503 is driven to rotate by operating the turning handle 507, so that the flexible toothed belt 307 and the flexible binding The belts 404 are tightened respectively, and the flexible toothed belt 307, in cooperation with the gear 1 306 and the guide wheel 309, is tightly attached to the outer peripheral surface of the tube body 100 to form a surrounding clamp. The connecting arm 302 drives the roller 303 to press the tube body 100 under the elastic force of the torsion spring 3022 to achieve flexible clamping. The flexible strap 404, under the guidance of the positioning wheel 403, presses the limit plate 401 onto the tube body 100. At the same time, the ratchet 5061 and the pawl 5062 are locked under the action of the spring 5065.

[0055] At this time, by starting the motor 305, the shaft 304 and gear 1 306 are driven to rotate, and the gear 1 306 is meshed with the flexible toothed belt 307 to drive the arc-shaped connecting seat 301 to rotate around the outer periphery of the tube body 100, so that the laser cutting head 200 performs circular cutting along the outer periphery of the tube body 100. During this process, the main shaft 308 rotates synchronously with the arc-shaped connecting seat 301. When the arc-shaped connecting seat 301 rotates to 270 degrees, the cut part of the tube body 100 is only connected to the tube body 100 by a small amount of material. At this time, the arc-shaped slide bar 310 slides and docks in the track 405, and supports the part of the tube body 100 to be cut by the flexible strap 404.

[0056] When the arc-shaped connecting seat 301 rotates to the position of the winding mechanism 500, the motor 305 is turned off, and the operator rotates the handle 2 609 to drive the worm wheel 607 and the rotating rod 606 through the worm 608, so that the gear 4 605 engages with the arc-shaped tooth plate 602 for transmission, driving the arc-shaped tooth plate 602 to slide along the arc groove 601, and then drives the laser cutting head 200 to continue to move along the arc track through the sliding column 603 and the bracket 604, completing the compensatory cutting of the remaining uncut area of ​​the tube body 100, and realizing 360-degree annular cutting of the tube body 100.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A laser cutting device for pipe fittings, comprising: tube body(100); A laser cutting head (200) is used to cut the tube body (100), characterized in that it also includes: The cutting mechanism (300) is provided on the tube body (100), and the cutting mechanism (300) comprises an arc-shaped connecting seat (301) provided on the outside of the tube body (100) and a flexible toothed belt (307) arranged around the outer peripheral surface of the tube body (100), wherein the laser cutting head (200) is provided on the arc-shaped connecting seat (301), and two groups of connecting arms (302) are symmetrically provided on the arc-shaped connecting seat (301), and rollers (303) are rotatably provided at the ends of the connecting arms (302), and the rollers (303) are in contact with the outer peripheral surface of the tube body (100), and the rollers (303) are rotatably connected to the shaft (304). Connected to the connecting arm (302), a motor (305) is installed on one group of the connecting arms (302), the output end of the motor (305) is fixed to one end of the corresponding shaft (304), the other ends of the two groups of shafts (304) are extended outside the connecting arm (302) and fixed with gear one (306), the gear one (306) is meshed with the tooth surface of the flexible toothed belt (307), two groups of main shafts (308) are symmetrically fixed on the arc-shaped connecting seat (301), the main shaft (308) is rotatably sleeved with a guide wheel (309), and the guide wheel (309) is in sliding contact with the non-tooth surface of the flexible toothed belt (307); A support mechanism (400) is provided on the tube body (100), the support mechanism (400) comprising a limiting plate (401) provided on the tube body (100), a through slot (402) provided on the limiting plate (401), positioning wheels (403) symmetrically arranged in the through slot (402), and a flexible binding belt (404) passing through the positioning wheel (403) and wrapped around the outer peripheral surface of the tube body (100); The flexible toothed belt (307) and the flexible binding belt (404) are both provided with a reeling mechanism (500), and the reeling mechanism (500) is used to adjust the tension of the flexible toothed belt (307) and the flexible binding belt (404), respectively.

2. The laser cutting device for pipes and pipe fittings according to claim 1, characterized in that: The winding mechanism (500) includes a housing (501) and a cover plate (502) arranged on one side of the housing (501), one end of the flexible toothed belt (307) and the flexible binding belt (404) are respectively fixedly connected to the side wall of the corresponding housing (501), a winding shaft (503) is rotatably provided in the housing (501), the other ends of the flexible toothed belt (307) and the flexible binding belt (404) are respectively fixed to the surface of the corresponding winding shaft (503) and are wound around the corresponding winding shaft (503) in a winding manner, one end of the winding shaft (503) passes through the outside of the housing (501) and is fixed with a second gear (504), the second gear (504) is meshed with a third gear (505), the third gear (505) is rotatably connected to the housing (501) via a connecting shaft (506), one end of the connecting shaft (506) extends to the outside of the cover plate (502) and is fixed with a turning handle (507).

3. The laser cutting device for pipes and fittings according to claim 1, characterized in that: A curved track (405) is provided on one side of the limiting plate (401) close to the curved connecting seat (301), and a curved sliding rod (310) is slidably connected in the track (405), and one end of the curved sliding rod (310) is fixed on the corresponding main shaft (308).

4. The laser cutting device for pipes and fittings according to claim 1, characterized in that: A compensation mechanism (600) is provided on the arc-shaped connecting seat (301), and the compensation mechanism (600) comprises an arc-shaped groove (601) provided on the arc-shaped connecting seat (301), an arc-shaped tooth plate (602) slidably connected in the arc-shaped groove (601), a sliding column (603) fixed on the arc-shaped tooth plate (602), and a bracket (604) fixedly connected to the sliding column (603), and the laser cutting head (200) is mounted on the bracket (604).

5. The laser cutting device for pipes and tubes according to claim 4, characterized in that: The arc-shaped tooth plate (602) is meshed with a gear four (605), and the gear four (605) is rotatably connected to a notch opened in the arc-shaped connecting seat (301) via a rotating rod (606). A worm wheel (607) is fixed to the rotating rod (606), and a worm (608) is meshed with one side of the worm wheel (607). One end of the worm (608) extends outside the arc-shaped connecting seat (301) and is fixed with a turning handle two (609).

6. The laser cutting device for pipes and fittings according to claim 2, characterized in that: A ratchet (5061) is fixed to the connecting shaft (506), and a pawl (5062) is provided on the outer periphery of the ratchet (5061). The pawl (5062) is rotatably connected to the housing (501) via a rotating shaft (5063), one end of the rotating shaft (5063) extends outside the cover plate (502). A protrusion (5064) is fixed to the housing (501), and a spring (5065) is provided between the protrusion (5064) and the pawl (5062).

7. The laser cutting device for pipes and tubes according to claim 2, characterized in that: Two sets of side plates (508) are symmetrically fixed on the winding shaft (503), and the side plates (508) are used to limit the winding parts of the flexible toothed belt (307) and the flexible binding belt (404).

8. The laser cutting device for pipes and tubes according to claim 4, characterized in that: A slide rail (311) for the slide column (603) to slide is provided on one side of the arc-shaped connecting seat (301) close to the limiting plate (401).

9. The laser cutting device for pipes and tubes according to claim 1, characterized in that: An anti-slip layer (406) is provided on one side of the limiting plate (401) close to the outer peripheral surface of the tube body (100).

10. The laser cutting device for pipes and tubes according to claim 1, characterized in that: The side of the connecting arm (302) away from the roller (303) is rotatably connected to the arc-shaped connecting seat (301) via a rotating rod (3021). Both ends of the rotating rod (3021) are provided with a torsion spring (3022), and the two ends of the torsion spring (3022) are respectively fixed to the connecting arm (302) and the arc-shaped connecting seat (301).

Images