A basket tube laser cutting device

Abstract

The application discloses a kind of basket pipe fittings laser cutting device, and the application relates to pipe fittings cutting technical field.The basket pipe fittings laser cutting device, including numerical control operating platform, chuck being installed on numerical control operating platform and laser cutting head, numerical control operating platform is slidably connected with electric slide, and after pipe fittings cutting is completed, it is used to guide and remove, electric slide upper side is fixedly connected with L-shaped frame, after cutting completion of whole row pipe fittings, first push the abrasion part and move down, make abrasion part and the end of pipe fittings that has been cut contact, while in the process of separation movement, promote pipe fittings end to slide on abrasion part surface, to remove the slag of pipe fittings end, so that pipe fittings end is more flat, the present application is positioned by support part stable support, and the separation of expansion and displacement adhering pipe fittings and abrasion part is synchronized to remove slag, realize the stable support of cutting process, automatic separation and end face cleaning integration processing, effectively eliminate the end surface defect caused by sagging, adhering and slag, improve cutting precision.

Description

Technical Field

[0001] This invention relates to the field of pipe cutting technology, specifically to a laser cutting device for suspended platform pipes. Background Technology

[0002] The suspended platform is composed of multiple pipes of different directions, lengths and cross-sectional shapes welded together, including a large number of round pipes and reinforcing rods. These pipes usually exist in the form of standard length tube blanks before processing. Therefore, when processing the suspended platform structure, it is necessary to cut the long tube blanks into multiple segments of specified lengths according to the design requirements. Laser cutting has become the main processing method.

[0003] In actual production, to improve cutting efficiency, multiple long tube blanks are usually arranged closely together for laser cutting. This method is fast and has high capacity, but it also brings obvious disadvantages: because the tubes are in contact with each other, the high-temperature molten metal droplets, high-temperature microparticles, and slag generated by the laser during the cutting process will inevitably be sprayed onto the surface of adjacent tubes. This can easily cause the metal micro-melting layer and slag to fuse with the adjacent tubes at high temperatures, thus sticking the adjacent tubes together. In addition, the tubes in the basket are generally thick-walled, so the laser power must be increased to penetrate the cut. The higher the laser power, the more heat is generated, the wider the heat-affected zone, and the more obvious the heat conduction, which makes the adhesion of adjacent tubes more serious. After the tubes are stuck together, when they are ready to be separated after the cutting is completed, because the slag has cooled and solidified, it is often necessary to use external tools such as pry bars and hammers to separate the tubes. This process can easily cause scratches or deformation at the ends of the tubes, affecting the subsequent assembly accuracy. At the same time, the slag adhering to the ends of the tubes will also cause unevenness of the cut end face, further affecting the subsequent installation accuracy.

[0004] Furthermore, most common laser cutting equipment for pipes currently only clamps and positions the first half of the pipe, leaving the section to be cut suspended in mid-air. When the pipe is about to be cut, the suspended section will suddenly drop under its own weight, pulling on the tiny connecting parts that are not yet completely severed. This causes the cut surface to appear uneven, with tear-like, stepped, or burr-like patterns. This problem is especially pronounced when processing long and heavy square pipes, which again seriously affects the cutting quality and subsequent installation. Summary of the Invention

[0005] This invention provides a laser cutting device for suspended platform pipe fittings, which solves the technical problems of existing pipe fitting laser cutting machines causing multiple pipe fittings to stick together during laser cutting, with molten slag adhering to the pipe fitting ends, affecting subsequent assembly, and causing the cut section of the pipe fitting to be suspended in the air and pulled by its own weight when it is about to be broken, resulting in incomplete cutting of the part, causing defects such as tearing, steps or burrs on the cut surface, thereby further reducing the cutting quality and installation accuracy.

[0006] This invention provides a laser cutting device for suspended platform pipe fittings, comprising a CNC operating table, a chuck mounted on the CNC operating table, and a laser cutting head. An electric slide is slidably connected to the CNC operating table, and a support portion is installed on the electric slide. The support portion effectively supports the free end of the pipe fitting before it is laser-cut and guides its movement after cutting. An L-shaped frame is fixedly connected to the upper side of the electric slide. A rectangular support frame is mounted on the lower side of the transverse section of the L-shaped frame via a pressing part. The rectangular support frame is provided with a rubbing part and a positioning and expanding part. During cutting, the pressing part... The drive positioning and expansion section contacts the top of the entire row of pipe fittings to be cut, uniformly positioning and stabilizing the entire row of pipe fittings. After the entire row of pipe fittings is cut, the pressing section continues to move downward. First, it pushes the rubbing section downward, so that the rubbing section contacts the end of the cut pipe fittings. Then, the positioning and expansion section runs again, applying a separation force to the entire row of pipe fittings that are stuck together due to the end slag. This causes the entire row of pipe fittings to be expanded and separated in a lateral direction at equal intervals. At the same time, during the separation and movement, the end of the pipe fitting is slid on the surface of the rubbing section to remove the slag from the end of the pipe fitting, thereby making the end of the pipe fitting smoother.

[0007] In one possible implementation, the pressing part includes an electric telescopic rod fixedly connected to the lower side of the transverse section of the L-shaped frame. The lower end of the electric telescopic rod is fixedly connected to a bracket. The lower end face of the bracket is symmetrically fixedly connected to spring telescopic rod assemblies. The rectangular bearing frame is fixedly connected to the lower end of the spring telescopic rod assemblies.

[0008] In one possible implementation, the polishing part includes a polishing plate, and several support rods are fixedly connected at equal intervals on the left and right opposite sides of the rectangular support frame. The end of the support rods located in the same row away from the rectangular support frame is fixedly connected to the polishing plate.

[0009] In one possible implementation, the positioning and expansion part includes a rectangular support frame slidably connected to the rectangular support frame. Four return springs distributed in a matrix are fixedly connected between the rectangular support frame and the rectangular support frame. Two slide rods are symmetrically fixedly connected between the front and rear opposite sides of the rectangular support frame. Several pressure blocks are equidistantly slidably connected to the outside of the two slide rods. A linkage component is provided between the pressure blocks and the rectangular support frame. A top-moving component is provided between the first pressure block at the front end of the row of pressure blocks and the first pressure block at the rear end.

[0010] In one possible implementation, the support portion includes a tray hinged to an electric slide via a lug, a first limiting block fixedly connected to the front of the upper end of the electric slide for limiting the tray when tilted, and a second limiting block fixedly connected to the rear of the upper end face of the electric slide for limiting the tray when rotated to a horizontal state.

[0011] In one possible implementation, the linkage component includes a telescopic frame that is hinged together at the middle of the upper end face of the pressure block. Two connecting sleeves are symmetrically hinged on the telescopic frame. L-shaped limiting grooves are provided on the front and rear walls of the rectangular support frame. An L-shaped limiting rod that is slidably connected in the L-shaped limiting groove is fixedly connected to the side of the connecting sleeve away from the telescopic frame.

[0012] In one possible implementation, the top-moving assembly includes connecting plates fixedly connected to the left and right opposite sides of the pressure block, with connecting plates hinged to the upper surface of the connecting plates, and the upper surfaces of the two connecting plates hinged to each other.

[0013] In one possible implementation, the upper surface of the pressure block has two symmetrically distributed sink grooves, and a tension spring is fixedly connected between the front and rear walls of the sink grooves.

[0014] In one possible implementation, each of the pressure blocks has an arc-shaped groove on its lower side that matches the outer arc surface of the pipe.

[0015] In one possible implementation, a top column is fixedly connected to the rear of the lower end face of the rectangular support frame. The top column is used to press down on the support plate as the rectangular support frame moves downward, so that the support plate turns into a horizontal state.

[0016] As can be seen from the above technical solutions, the present invention has the following advantages: In the present invention, by using the supporting part to support the bottom of the pipe during the cutting process, it can effectively prevent the pipe from sagging due to its own weight and pulling the cut when it is about to be broken, ensuring that the end face is stable under force and the end face remains straight. At the same time, the positioning and expanding part can automatically separate the entire row of pipes that are stuck together due to high temperature slag after the cutting is completed, avoiding scratches and deformation caused by manual prying. During the separation process, the rubbing part quickly cleans the slag remaining at the end of the pipe, so that the end face is restored to flatness and smoothness. The three work together to provide comprehensive assistance to the cutting process in key links such as support, separation and end face treatment. This not only reduces the defects on the end face of the pipe caused by sagging, sticking and slag, but also indirectly and significantly improves the assembly adaptability and overall cutting quality after cutting.

[0017] In this invention, the positioning and expansion unit applies uniform top pressure positioning to the outer side of the entire row of pipe fittings before cutting, which ensures that all pipe fittings maintain a consistent posture and stable clamping during the cutting process, avoiding cutting deviation caused by slight displacement. After cutting, the positioning and expansion unit can actively separate the pipe fittings that are stuck together due to slag, high-temperature particles, and local re-fusion in a timely manner, without the need for prying, knocking, or other methods, thus avoiding scratches, indentations, or deformation of the pipe fitting ends and keeping the separated ends flat and intact, thereby improving the cutting quality and the accuracy of the cut pipe fittings.

[0018] In this invention, by working together with the grinding part and the positioning and expanding part, the residual slag at the end of the pipes is automatically scraped and cleaned while the entire row of pipes is separated and moved. This allows the two key steps of separation and slag removal to be completed in one go, effectively ensuring the flatness and consistency of the cut end and further improving the cutting quality.

[0019] In this invention, the support part effectively supports the lower part of the pipe during the cutting process, which eliminates the sagging problem caused by the suspended section being cut in traditional equipment. This allows the pipe to maintain a stable posture when it is about to be broken, avoiding the pulling of the incompletely cut part due to its own weight. This eliminates the generation of torn, stepped, or burr-like cross-sections, ensuring a smooth end face cut. After the cutting is completed, the support part can also automatically tilt to move the cut pipe away from the cutting area, making the entire cutting process more continuous. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the laser cutting device for suspended basket pipes provided by the present invention.

[0022] Figure 2 A schematic diagram of the connection structure of the pressing part, the rubbing part, and the positioning and expanding part provided by the present invention.

[0023] Figure 3 This is a schematic diagram of the positioning and expansion section provided by the present invention from a bottom-view perspective.

[0024] Figure 4 This is a schematic diagram of the connection structure between the pressing part and the positioning and expanding part provided by the present invention.

[0025] Figure 5 This is a cross-sectional schematic diagram of the connection structure between the rectangular load-bearing frame and the rectangular support frame provided by the present invention.

[0026] Figure 6 A schematic diagram of the installation structure of the linkage component provided by the present invention.

[0027] Figure 7 This is a partial structural diagram of the present invention when applying pressure to a pipe fitting.

[0028] The above-mentioned attached drawings include the following reference numerals: 1. CNC operating table; 2. Laser cutting head; 3. Electric slide; 4. Support part; 41. Pallet; 42. First limit stop; 43. Second limit stop; 5. Pressing part; 51. Electric telescopic rod; 52. Bracket; 53. Spring telescopic rod assembly; 6. Rectangular bearing frame; 7. Grinding part; 71. Grinding plate; 8. Positioning and expansion part; 81. Rectangular support frame; 82. Return spring; 83. Slide rod; 84. Pressure block; 85. Linkage assembly; 851. Telescopic frame; 852. L-shaped limit groove; 853. L-shaped limit rod; 86. Connecting plate; 9. Tension spring; 10. Top column. Detailed Implementation

[0029] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Please see Figure 1 and Figure 2 This invention provides a technical solution: a laser cutting device for suspended platform pipe fittings, including a CNC operating table 1, a chuck mounted on the CNC operating table 1, and a laser cutting head 2. An electric slide block 3 is slidably connected to the CNC operating table 1, and a support part 4 is installed on the electric slide block 3. The support part 4 effectively supports the free end of the pipe fitting before it is laser-cut and guides it away after cutting. An L-shaped frame is fixedly connected to the upper side of the electric slide block 3. A rectangular support frame 6 is mounted on the lower side of the transverse section of the L-shaped frame via a pressing part 5. A rubbing part 7 and a positioning and expanding part 8 are also provided on the rectangular support frame 6. During cutting, the pressing part 5 drives the positioning and expanding part 8 to contact the upper part of the entire row of pipe fittings to be cut, and uniformly positions and stabilizes the entire row of pipe fittings. After the entire row of pipe fittings is cut, the pressing part 5 continues to move downward. First, it pushes the rubbing part 7 down to make the rubbing part 7 contact the end of the cut pipe fitting. Then, the positioning and expanding part 8 runs again to apply a separation force to the entire row of pipe fittings that are stuck together due to the end slag, so that the entire row of pipe fittings is expanded and separated in a lateral direction at equal intervals. At the same time, during the separation and movement, the end of the pipe fitting is slid on the surface of the rubbing part 7 to remove the slag from the end of the pipe fitting, thereby making the end of the pipe fitting flatter.

[0031] Please see Figure 2In this embodiment, the pressing part 5 includes an electric telescopic rod 51 fixedly connected to the lower side of the transverse section of the L-shaped frame. A bracket 52 is fixedly connected to the lower end of the electric telescopic rod 51. Spring telescopic rod assemblies 53 are symmetrically fixedly connected to the lower end face of the bracket 52. A rectangular bearing frame 6 is fixedly connected to the lower end of the spring telescopic rod assembly 53.

[0032] Please see Figure 3 In this embodiment, the supporting part 4 includes a support plate 41 hinged to the electric slide 3 by a lug. The front part of the upper end of the electric slide 3 is fixedly connected to a first limiting block 42 for limiting the support plate 41 after tilting. The rear part of the upper end face of the electric slide 3 is fixedly connected to a second limiting block 43 for limiting the support plate 41 when it is rotated to a horizontal state.

[0033] (It should be noted that both the chuck and the laser cutting head 2 are components of existing pipe laser cutting machines.) The electric slide 3 is initially located at the rear of the CNC operating table 1, with the lug located in the rear half of the support plate 41. Therefore, the support plate 41 is in a tilted state with the front lower than the rear in its natural state. At this time, the lower end face of the support plate 41 is in contact with the first limit stop 42. During laser cutting, the entire row of pipes passes through the chuck from right to left. The chuck is controlled to clamp the entire row of pipes, and then the electric slide 3 is controlled to clamp the pipes. The slide 3 moves forward, and the electric slide 3 then drives the support plate 41 to move forward. At this time, the upper surface of the support plate 41, which is in an inclined state, comes into contact with the pipe fitting. As the support plate 41 moves forward, it is pushed by the pipe fitting and gradually rotates. When the support plate 41 has completely moved under the entire row of pipe fittings, the support plate 41 becomes horizontal. The lower end face of the support plate 41 comes into contact with the second limit block 43, supporting the pipe fitting to be cut, thus avoiding the situation where the end of the pipe fitting is torn and uneven when it is about to be cut.

[0034] Next, the electric telescopic rod 51 is extended, causing the bracket 52 to move downwards. The bracket 52 then moves the rectangular support frame 6 downwards via the spring telescopic rod assembly 53. The rectangular support frame 6 then causes the positioning expansion part 8 to press down on the upper part of the pipe fitting, uniformly limiting the pipe fitting. The electric telescopic rod 51 is then paused. Next, the laser cutting head 2 is moved longitudinally to cut the pipe fittings sequentially. After cutting, the electric slide 3 is moved backwards, causing the entire row of cut pipe fittings to move backwards. (At this time, the positional relationship between the pressing part 5 and the pipe fitting is as follows...) Figure 7(As shown), then the electric telescopic rod 51 is extended under secondary control, driving the rubbing part 7 to contact the end of the pipe fitting and the positioning expansion part 8 to separate the pipe fitting. Finally, the electric telescopic rod 51 is retracted and reset. The electric telescopic rod 51 then drives the positioning expansion part 8 and the rubbing part 7 to move upward as a whole through the bracket 52 and the spring telescopic rod group 53, separating them from the pipe fitting and releasing the flattening state of the support plate 41. The support plate 41 tilts forward and returns to the initial state. The separated pipe fitting rolls forward under the inclined surface of the support plate 41. The pipe blank is moved to the left by the chuck to the front area of ​​the support plate 41. The above operation is repeated to control the electric slide 3 to move forward, so that the support plate 41 supports the next section of the pipe fitting.

[0035] Please see Figure 4 and Figure 5 In this embodiment, the positioning and expansion part 8 includes a rectangular support frame 81 slidably connected in the rectangular support frame 6. Four return springs 82 arranged in a matrix are fixedly connected between the rectangular support frame 81 and the rectangular support frame 6. Two slide rods 83 are symmetrically fixedly connected between the front and rear opposite sides of the rectangular support frame 81. Several pressure blocks 84 are equidistantly slidably connected to the outside of the two slide rods 83. A linkage component 85 is provided between the pressure blocks 84 and the rectangular support frame 81. A top-moving component is provided between the first pressure block 84 at the front end of the row of pressure blocks 84 and the first pressure block 84 at the rear end. Two symmetrically distributed sinkers are opened on the upper surface of the pressure blocks 84. A tension spring 9 is fixedly connected between the front and rear walls of the sinkers. An arc-shaped groove matching the outer arc surface of the tube is opened on the lower side of each pressure block 84.

[0036] Please see Figure 4 , Figure 5 and Figure 6 The linkage component 85 includes a telescopic frame 851 that is hinged together in the middle of the upper end face of the pressure block 84. Two connecting sleeves are symmetrically hinged on the telescopic frame 851. L-shaped limiting grooves 852 are provided on the front and rear walls of the rectangular support frame 81. An L-shaped limiting rod 853 that is slidably connected in the L-shaped limiting groove 852 is fixedly connected to the side of the connecting sleeve away from the telescopic frame 851. The top moving component includes a connecting plate that is fixedly connected to the left and right opposite sides of the pressure block 84. A connecting plate 86 is hinged to the upper end face of the connecting plate. The upper ends of the two connecting plates 86 are hinged to each other.

[0037] Please see Figure 3 A top column 10 is fixedly connected to the rear of the lower end face of the rectangular support frame 81. The top column 10 is used to press down on the support plate 41 as the rectangular support frame 81 moves down, so that the support plate 41 turns into a horizontal state.

[0038] Please see Figure 1 and Figure 4The grinding part 7 includes a support rod and a grinding plate 71. Several support rods are fixedly connected at equal intervals on the left and right opposite sides of the rectangular support frame 6. The end of the support rods in the same row away from the rectangular support frame 6 is fixedly connected to the grinding plate 71. The lower end surface of the grinding plate 71 is a slope that is higher on the side closer to the rectangular support frame 81 and lower on the side away from the rectangular support frame 81.

[0039] In the initial state: Under the pushing action of the return spring 82, the rectangular support frame 6 is sleeved at the position of the L-shaped limiting groove 852. The rectangular support frame 6 blocks the L-shaped limiting rod 853 and locks the L-shaped limiting rod 853, so that the linkage part is in a locked state, and the pressure block 84 is also in a state where it cannot move. The lower side of the grinding plate 71 is higher than the lower side of the pressure block 84. In its natural state, the tension spring 9 pulls all the pressure blocks 84 together. The front and rear ends of the tension spring 9 are only fixedly connected to the front and rear pressure blocks 84 respectively. When the electric telescopic rod 51 extends and drives the positioning expansion part 8 to move down as a whole to uniformly position the upper part of the pipe fitting, the rectangular support frame 81 drives the top column 10 to move down and press against the rear part of the upper surface of the support plate 41. The pressure applied to the rear part of the support plate 41 by the top column 10 ensures that the support plate 41 always remains horizontal during the cutting process. The arc-shaped groove at the lower part of the pressure block 84 contacts the upper part of the outer wall of the pipe fitting.

[0040] After the cutting is completed, the electric slide block 3 moves backward. When the electric telescopic rod 51 extends for the second time, the slag that sticks the ends of adjacent pipe fittings together is still in a high temperature state. The electric telescopic rod 51 pushes the rectangular support frame 6 downward through the bracket 52 and the spring telescopic rod group 53, causing the return spring 82 to be compressed. At the same time, the rectangular support frame 6 drives the grinding plate 71 to move downward through the support rod. During the downward movement of the grinding plate 71, its lower inclined surface will abut against the upper part of the pipe fitting end and play a guiding role. Then, the opposite sides of the two grinding plates 71 abut against the pipe fitting end. At this time, the rectangular support frame 6 descends to the lowest height, and the return spring 82 is compressed to the shortest state. At this time, the rectangular support frame 6 moves down below the position of the L-shaped limiting groove 852, so that the L-shaped limiting rod 853 is completely exposed from the L-shaped limiting groove 852, that is, the locking state of the L-shaped limiting rod 853 is released. The lower end face of the bracket 52 also abuts against the upper part of the hinge of the two connecting plates 86.

[0041] The electric telescopic rod 51 continues to extend, pushing the bracket 52 downward. The bracket 52 then pushes the spring telescopic rod assembly 53 to begin compression. The bracket 52 then pushes the connecting plate 86 downward. The connecting plate 86 then pushes the first and last pressure blocks 84 along the slide rod 83 to move away from each other through the connecting plate. The two pressure blocks 84 then drive the telescopic frame 851 to extend. At this time, the telescopic frame 851 can drive the L-shaped limiting rod 853 to slide out of the L-shaped limiting groove 852 through the connecting sleeve. The telescopic frame 851 then drives the remaining pressure blocks 84 to move away from each other along the slide rod 83. The pressure blocks 84 then drive the corresponding contacting pipes to move away from each other through the arc groove at their lower part. Before the slag cools down, the pipes are separated in time. As the pipes move away from each other, their ends slide on the grinding plate 71, thereby cleaning away the slag adhering to the ends of the pipes and ensuring the flatness of the ends of the pipes.

[0042] After the pipe fittings are separated and the ends are cleaned, the electric telescopic rod 51 is controlled to retract. The electric telescopic rod 51 first moves the bracket 52 upward, causing the spring telescopic rod assembly 53 to return to its original position and extend. As the bracket 52 moves upward, the pressure on the connecting plate 86 is gradually released. The tension spring 9 returns to its original position and pulls the first and last pressure blocks 84 closer together. The pressure blocks 84 then press the telescopic frame 851 to retract. The telescopic frame 851 moves the L-shaped limiting rod 853 closer together to return to its original position. The telescopic frame 851 simultaneously moves the pressure blocks 84 closer together until the pressure blocks 84 are pressed together again. At this time, the L-shaped limiting rod 853 returns to its original position and retracts into the L-shaped limiting groove 852. The spring telescopic rod assembly 53 also completes its reset. Then, the bracket 52 drives the rectangular support frame 6 to move upward through the spring telescopic rod assembly 53. The rectangular support frame 6 then drives the grinding plate 71 to separate from the end of the pipe through the support rod until it moves to the initial position. At this time, the rectangular support frame 6 is located outside the L-shaped limiting groove 852 and locks the L-shaped limiting rod 853 again. Then, the rectangular support frame 6 drives the rectangular support frame 81 to move upward. The rectangular support frame 81 drives the top column 10 to move upward and contact the pressing of the rear of the support plate 41. The support plate 41 then rotates forward around the lug to the initial tilted state of front low and rear high. After tilting, the support plate 41 causes the pipe above it to roll off automatically.

[0043] It should be noted that the elastic coefficient strengths of the return spring 82 and the spring telescopic rod assembly 53 are the optimal suitable values ​​obtained by those skilled in the art through multiple tests. The elastic coefficient strength of the return spring 82 is less than that of the spring telescopic rod assembly 53. The length of the spring telescopic rod assembly 53 remains unchanged before the return spring is compressed to its shortest distance.

[0044] In addition, the support rod can be replaced with the existing adjustable telescopic rod. The distance between the two grinding plates 71 can be flexibly adjusted using the adjustable telescopic rod, and the position of the grinding plates 71 can be adjusted adaptively according to the pipes of different lengths.

[0045] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0046] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A laser cutting device for suspended platform pipe fittings, comprising a CNC operating table, a chuck mounted on the CNC operating table, and a laser cutting head, characterized in that: An electric slide block is slidably connected to the CNC operating table. A support part is installed on the electric slide block. The support part is used to effectively support the free end of the pipe before it is cut by laser, and to guide it away after the pipe is cut. An L-shaped frame is fixedly connected to the upper side of the electric slide. A rectangular support frame is installed on the lower side of the transverse section of the L-shaped frame through a pressing part. A rubbing part is provided on the rectangular support frame, and a positioning and expansion part is also provided on the rectangular support frame. During cutting, the pressing part drives the positioning and expanding part to contact the top of the entire row of pipe fittings to be cut, uniformly positioning and stabilizing the entire row of pipe fittings. After the entire row of pipe fittings is cut, the pressing part continues to move downward. First, it pushes the rubbing part down so that the rubbing part contacts the end of the cut pipe fitting. Then, the positioning and expanding part runs again, applying a separation force to the entire row of pipe fittings that are stuck together due to the end slag. This causes the entire row of pipe fittings to be expanded and separated in a lateral direction at equal intervals. At the same time, during the separation and movement, the end of the pipe fitting is slid on the surface of the rubbing part to remove the slag from the end of the pipe fitting, thereby making the end of the pipe fitting smoother. The grinding part includes a grinding plate. Several support rods are fixedly connected at equal intervals on the left and right opposite sides of the rectangular support frame. The end of the support rods in the same row that is away from the rectangular support frame is fixedly connected to the grinding plate. The positioning and expansion part includes a rectangular support frame that is slidably connected to the rectangular support frame. Four return springs distributed in a matrix are fixedly connected between the rectangular support frame and the rectangular support frame. Two slide rods are symmetrically fixedly connected between the front and rear opposite sides of the rectangular support frame. Several pressure blocks are equidistantly slidably connected to the outside of the two slide rods. A linkage component is provided between the pressure blocks and the rectangular support frame. A top-moving component is provided between the first pressure block at the front end of the row of pressure blocks and the first pressure block at the rear end. The linkage component includes a telescopic frame that is hinged together in the middle of the upper end face of the pressure block. Two connecting sleeves are symmetrically hinged on the telescopic frame. L-shaped limiting grooves are provided on the front and rear walls of the rectangular support frame. An L-shaped limiting rod that is slidably connected in the L-shaped limiting groove is fixedly connected to the side of the connecting sleeve away from the telescopic frame. The top-moving assembly includes connecting plates fixedly connected to the left and right opposite sides of the pressure block. Connecting plates are hinged to the upper surface of the connecting plates, and the upper surfaces of the two connecting plates are hinged to each other.

2. The laser cutting device for suspended platform pipe fittings according to claim 1, characterized in that: The pressing part includes an electric telescopic rod fixedly connected to the lower side of the transverse section of the L-shaped frame. A bracket is fixedly connected to the lower end of the electric telescopic rod. Spring telescopic rod assemblies are symmetrically fixedly connected to the lower end face of the bracket. The rectangular bearing frame is fixedly connected to the lower end of the spring telescopic rod assemblies.

3. The laser cutting device for suspended platform pipe fittings according to claim 1, characterized in that: The supporting part includes a support plate hinged to the electric slide by a lug. The front part of the upper end of the electric slide is fixedly connected to a first limiting block for limiting the support plate after it is tilted. The rear part of the upper end face of the electric slide is fixedly connected to a second limiting block for limiting the support plate when it is rotated to a horizontal state.

4. The laser cutting device for suspended platform pipe fittings according to claim 1, characterized in that: The upper surface of the pressure block has two symmetrically distributed sink grooves, and a tension spring is fixedly connected between the front and rear walls of the sink grooves.

5. The laser cutting device for suspended platform pipe fittings according to claim 1, characterized in that: Each of the pressure blocks has an arc-shaped groove on its underside that matches the outer arc surface of the pipe.

6. The laser cutting device for suspended platform pipe fittings according to claim 2, characterized in that: A top column is fixedly connected to the rear of the lower end face of the rectangular support frame. The top column is used to press down on the support plate as the rectangular support frame moves down, so that the support plate turns into a horizontal state.

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