Profile steel laser cutting machine facilitating feeding and discharging

Abstract

The profile steel laser cutting machine comprises a feeding switching mechanism, the feeding switching mechanism comprises a bearing base, a cutting lifting mechanism is mounted at the top of the bearing base, a guide sliding seat is fixedly connected to the top of the bearing base, and a bearing sliding plate is slidably mounted on the surface of the guide sliding seat; the invention relates to the technical field of laser cutting machines. According to the profile steel laser cutting machine facilitating feeding and discharging, the feeding switching mechanism and the cutting lifting mechanism are used in a combined mode, the first cutting table and the second cutting table are installed on the inner sides of the two containing bottom frames correspondingly through the arrangement of the two mechanisms, and then linkage between the structures is matched; and when the first cutting table ascends to be in butt joint with the positioning ring table to conduct cutting work, a worker synchronously starts to conduct feeding and discharging on the second cutting table, and automatic locking and unlocking can be completed no matter whether the first cutting table or the second cutting table ascends.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cutting machines, and specifically to a section steel laser cutting machine that is convenient for loading and unloading. Background Art

[0002] According to the different smelting qualities of steel, section steels are divided into ordinary section steels and high-quality section steels. Ordinary section steels are further divided into large section steels, medium section steels, and small section steels according to the current metal product catalog. Ordinary section steels can also be divided into I-beams, channels, angles, etc. according to their cross-sectional shapes.

[0003] Existing section steels have different names due to their different shapes. However, before any section steel is used, it needs to be cut according to the application field and requirements. The cutting of section steels requires a dedicated laser cutting machine. First, a hoisting device is used to hoist the section steel to the top of the cutting table, and then a linear motor drives the cutting machine to move for cutting. Although the existing cutting equipment and cutting processes can perfectly process section steels, in actual long-term use, many defects are still exposed, such as: The existing cutting table and cutting machine are used in combination, so they have a certain height. Since the section steel itself is extremely heavy, when cutting section steel, the section steel needs to be first hoisted onto a dedicated cutting table, and still needs to be hoisted down after cutting. This method of loading and unloading makes the preparatory work before and after the entire cutting process too cumbersome and time-consuming. In addition, when hoisting the section steel for loading and unloading and swapping, it needs to be carried out slowly to ensure safety, which makes the entire process take a relatively long time to complete, resulting in low efficiency and affecting the cutting work; Therefore, a section steel laser cutting machine that is convenient for loading and unloading and can improve the cutting efficiency is designed to solve such defects. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a section steel laser cutting machine that is convenient for loading and unloading, and solves the problem of slow cutting efficiency when cutting existing section steels.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A section steel laser cutting machine that is convenient for loading and unloading, including a loading and unloading switching mechanism, the loading and unloading switching mechanism includes a load-bearing base, and a cutting lifting mechanism is installed on the top of the load-bearing base.

[0006] Preferably, a sliding guide base is fixedly connected to the top of the load-bearing base. A load-bearing sliding plate is slidably mounted on the surface of the sliding guide base. Two sides of the top of the load-bearing sliding plate are fixedly connected with a containing bottom frame. The front side of the top of the containing bottom frame is fixedly connected with a lifting guide post. The first cutting table and the second cutting table are respectively slidably mounted on the surfaces of the two lifting guide posts, and the first cutting table is located inside the containing bottom frame. First positioning grooves are formed in the front and rear parts of both sides of the first cutting table and the second cutting table. Lifting cross bars are fixedly connected to the opposite sides of the first cutting table and the second cutting table.

[0007] Preferably, a linkage groove is formed in the rear part of the load-bearing base. A reciprocating lead screw is rotatably connected between the two sides of the inner cavity of the linkage groove through a bearing member. A threaded cylinder is threadedly connected to the surface of the reciprocating lead screw, and the threaded cylinder is fixedly connected with the first cutting table and the second cutting table through a bracket. Gear cylinders are fixedly connected to both sides of the surface of the reciprocating lead screw.

[0008] Preferably, rebound cross bars are slidably mounted on both sides of the load-bearing base. A trapezoidal push plate is fixedly connected between the rear ends of the two rebound cross bars. A first spring is sleeved on the surface of the rebound cross bar. Retraction bottom frames are fixedly connected to both sides of the surface of the trapezoidal push plate through fixing plates, and the retraction bottom frames are located inside the linkage groove. An arc-shaped tooth plate meshing with the gear cylinder is slidably mounted inside the retraction bottom frame. A second spring is fixedly connected between the arc-shaped tooth plate and the bottom of the inner cavity of the retraction bottom frame, and a plurality of second springs are provided.

[0009] Preferably, the cutting lifting mechanism includes a positioning ring platform, and the positioning ring platform is fixedly mounted on the top of the load-bearing base through a bracket. The second cutting table is located inside the positioning ring platform. Linear guide rods are fixedly connected to both sides of the positioning ring platform through brackets. Second positioning grooves matched with the first positioning grooves are formed in the front and rear parts of both sides of the positioning ring platform.

[0010] Preferably, blocking guide rods are fixedly connected to the front and rear parts of both sides of the positioning ring platform. Side pressing plates are slidably mounted between the surfaces of the two blocking guide rods on the same side. A third spring is sleeved on the surface of the blocking guide rod. Positioning insertion plates are fixedly connected to the front and rear parts of the opposite sides of the two side pressing plates, and one end of the positioning insertion plate passes through the second positioning groove and extends to the inside of the first positioning groove. A bearing round rod is fixedly connected to the top of the side pressing plate through a bracket.

[0011] Preferably, linear motors are slidably mounted on the surfaces of the linear guide rods. An arch-shaped plate is fixedly connected between the tops of the two linear motors. Inclined surface pulling plates matched with the lifting cross bars and the trapezoidal push plate are fixedly connected to the opposite sides of the two linear motors.

[0012] Preferably, a cylinder is fixedly connected to the top of the bow-shaped plate through an opening. The bottom end of the cylinder is fixedly connected with a five-axis laser cutting head. The first lifting groove and the second lifting groove are respectively arranged at the rear part of the cylinder.

[0013] Preferably, a bent frame is fixedly connected to the lower part of the surface of the cylinder. Reverse pressing plates which are matched with the bearing round rods are fixedly connected to both ends of the bent frame, and the reverse pressing plates are located between the linear motor and the positioning ring platform.

[0014] Beneficial effects The invention provides a section steel laser cutting machine which is convenient for loading and unloading. Compared with the prior art, the following beneficial effects are achieved: (1) For the section steel laser cutting machine which is convenient for loading and unloading, by using the loading and unloading switching mechanism and the cutting lifting mechanism in a combined manner, the two mechanisms can utilize the first cutting table and the second cutting table respectively installed on the inner sides of the two placing bottom frames, and then with the linkage between the structures, when the first cutting table rises and docks with the positioning ring platform for cutting work, the staff can synchronously start loading and unloading the second cutting table. Moreover, whether the first cutting table or the second cutting table rises, automatic locking and unlocking can be completed, without the need for the staff to perform cumbersome operations, effectively improving the cutting efficiency and meeting the current use requirements.

[0015] (2) For the section steel laser cutting machine which is convenient for loading and unloading, by arranging two placing bottom frames on the top of the bearing base, and respectively installing the first cutting table and the second cutting table on the inner sides of the two placing bottom frames, and using the inclined surface pull plate, the settings of these structures can utilize the extrusion of the inclined surface pull plate on the lifting cross bar to drive the first cutting table and the second cutting table to lift. When either the first cutting table or the second cutting table is located inside the positioning ring platform for cutting work, the other is located outside the bottom of the positioning ring platform, which is convenient for the staff to load and unload section steel on its top without interference from each other. After the cutting is completed subsequently, directly swapping the positions of the first cutting table and the second cutting table for lifting can shorten the loading and unloading time, and is more convenient, improving the work efficiency.

[0016] (3) For the section steel laser cutting machine which is convenient for loading and unloading, by threadedly connecting the two placing bottom frames with the reciprocating lead screw through the threaded cylinder, and using the gear cylinder and the arc tooth plate, the settings of these structures can push the trapezoidal push plate to move backward after the inclined surface pull plate drives the lifting cross bar to descend to the bottom, so that the arc tooth plate drives the gear cylinder and the reciprocating lead screw to rotate, enabling the threaded cylinder to reciprocate to switch the left and right positions of the placing bottom frame. And after the trapezoidal push plate resets, the arc tooth plate can retract into the inside of the retraction bottom frame without meshing with the gear cylinder, and can automatically switch positions without the operation of the staff, improving the overall practicality and functionality of the equipment.

[0017] (4) The steel laser cutting machine, which is convenient for loading and unloading, has second positioning grooves on both sides of the positioning ring table that are used in conjunction with the first positioning groove, and is used in conjunction with a reverse pressure plate, a pressure-bearing round rod and a positioning plug plate. The arrangement of these structures enables the reverse pressure plate to squeeze the pressure-bearing round rod when the cylinder drives the five-axis laser cutting head to rise to the top, thereby pulling out the positioning plug plate to unlock the first cutting table or the second cutting table, and facilitating lifting and lowering. After the first cutting table or the second cutting table rises and completes docking with the positioning ring table, the reverse pressure plate can be separated from the pressure-bearing round rod by descending the cylinder, thereby allowing the positioning plug plate to be inserted into the first positioning groove to fix the first cutting table and the second cutting table. There is no need for staff to perform locking operations, which reduces the workload and improves safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a rear view of the feeding switching mechanism and the cutting lifting mechanism structure of the present invention; Figure 3 It is a schematic diagram of the structure of the feeding switching mechanism of the present invention; Figure 4 It is a schematic diagram of the first cutting table, the lifting cross bar and the first positioning groove structure of the present invention; Figure 5 It is a schematic diagram of the load-bearing slide plate, the containing bottom frame and the threaded cylinder structure of the present invention; Figure 6 It is a schematic diagram of the gear cylinder, rebound cross bar and trapezoidal push plate structure of the present invention; Figure 7 It is a schematic diagram of the retractable bottom frame, the arc-shaped tooth plate and the second spring structure of the present invention; Figure 8 It is a schematic diagram of the cutting lifting mechanism structure of the present invention; Figure 9 It is a schematic diagram of the linear motor, bow-shaped plate and inclined pull plate structure of the present invention; Figure 10 It is a schematic diagram of the five-axis laser cutting head, bending frame and reverse pressure plate structure of the present invention; Figure 11 It is a schematic diagram of the structure of the cylinder, the first lifting groove and the second lifting groove of the present invention; Figure 12 It is a schematic diagram of the positioning ring stage, the linear guide rod and the second positioning groove structure of the present invention; Figure 13 It is a schematic diagram of the third spring, the positioning plug plate and the pressure-bearing round rod structure of the present invention.

[0019] In the figure: 1. Loading and switching mechanism; 2. Cutting lifting mechanism; 101. Load-bearing base; 102. Guide sliding base; 103. Load-bearing sliding plate; 104. Placing bottom frame; 105. Lifting guide post; 106. First cutting table; 107. Lifting cross bar; 108. First positioning groove; 109. Linkage groove; 110. Reciprocating lead screw; 111. Threaded barrel; 112. Gear barrel; 113. Rebound cross bar; 114. Trapezoidal push plate; 115. First spring; 116. Retracting bottom frame; 117. Arc tooth plate; 118. Second spring; 119. Second cutting table; 201. Positioning ring platform; 202. Linear guide rod; 203. Second positioning groove; 204. Position-blocking guide rod; 205. Side pressing plate; 206. Third spring; 207. Positioning plug; 208. Pressure-bearing round rod; 209. Linear motor; 210. Arch-shaped plate; 211. Inclined surface pulling plate; 212. Cylinder; 213. Five-axis laser cutting head; 214. First lifting measurement groove; 215. Second lifting measurement groove; 216. Bent frame; 217. Reverse pressing plate. Detailed implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1-13 , the present invention provides a technical solution: a profiled steel laser cutting machine convenient for loading and unloading, including a loading and switching mechanism 1, and the loading and switching mechanism 1 includes a load-bearing base 101, and a cutting lifting mechanism 2 is installed on the top of the load-bearing base 101.

[0022] Please refer to Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7, which shows the overall structure of the loading switching mechanism 1. A sliding guide seat 102 is fixedly connected to the top of the load-bearing base 101. A load-bearing sliding plate 103 is slidably mounted on the surface of the sliding guide seat 102. Both sides of the top of the load-bearing sliding plate 103 are fixedly connected with a containing bottom frame 104. A lifting guide post 105 is fixedly connected to the front side of the top of the containing bottom frame 104. A first cutting table 106 and a second cutting table 119 are respectively slidably mounted on the surfaces of the two lifting guide posts 105, and the first cutting table 106 is located inside the containing bottom frame 104. First positioning grooves 108 are formed in the front and rear parts of both sides of the first cutting table 106 and the second cutting table 119. Lifting cross bars 107 are fixedly connected to the opposite sides of the first cutting table 106 and the second cutting table 119. A linkage groove 109 is formed in the rear part of the load-bearing base 101. A reciprocating lead screw 110 is rotatably connected between the two sides of the inner cavity of the linkage groove 109 through a bearing member. The reciprocating lead screw 110 can drive the threaded barrel 111 to reciprocate, while the gear barrel 112 can only drive the threaded barrel 111 to move to one end of the reciprocating lead screw 110 every time it rotates. The threaded barrel 111 is threadedly connected to the surface of the reciprocating lead screw 110, and the threaded barrel 111 is fixedly connected to the first cutting table 106 and the second cutting table 119 through a bracket. Gear barrels 112 are fixedly connected to both sides of the surface of the reciprocating lead screw 110. Rebound cross bars 113 are slidably mounted on both sides of the load-bearing base 101. A trapezoidal push plate 114 is fixedly connected between the rear ends of the two rebound cross bars 113. A first spring 115 is sleeved on the surface of the rebound cross bar 113. Retraction bottom frames 116 are fixedly connected to both sides of the surface of the trapezoidal push plate 114 through fixing plates, and the retraction bottom frames 116 are located inside the linkage groove 109. An arc-shaped tooth plate 117 meshing with the gear barrel 112 is slidably mounted inside the retraction bottom frame 116. A second spring 118 is fixedly connected between the arc-shaped tooth plate 117 and the bottom of the inner cavity of the retraction bottom frame 116, and a number of second springs 118 are provided.

[0023] Before use, first place the profiled steel on the top of the first cutting table 106 by using a hoisting device, and then start the air cylinder 212 to drive the five-axis laser cutting head 213 to rise to the topmost position. When the retraction position of the air cylinder 212 is at the second lifting groove 215, the reverse pressing plates 217 on both sides rise synchronously through the bending frames 216 and squeeze the bearing round rods 208 on both sides. After the bearing round rods 208 are squeezed, they will drive the side pressing plates 205 to slide on the surface of the blocking guide rods 204, so as to extract the positioning insertion plates 207 from the inner sides of the first positioning groove 108 and the second positioning groove 203. At this time, the second cutting table 119 loses its limit, but at this time the lifting cross bar 107 is placed on the top of the inclined surface pull plate 211, so it will not fall. Then start the two linear motors 209 to drive the bow-shaped plate 210 to move backward slowly as a whole. At this time, the backward movement of the bow-shaped plate 210 will drive the inclined surface pull plate 211 to move backward slowly synchronously. When the inclined surface pull plate 211 moves backward, the lifting cross bar 107 follows the inclined surface of the inclined surface pull plate 211 and cooperates with the limit of the lifting guide column 105 to make the second cutting table 119 slowly descend and separate from the positioning ring platform 201. When the second cutting table 119 completely falls into the inner part of the lower containing bottom frame 104, at this time the inclined surface pull plate 211 is separated from the lifting cross bar 107 and contacts the bottom end with the arc tooth plate 117. As the linear motor 209 continues to move backward, the inclined surface pull plate 211 pushes the trapezoidal push plate 114 to move backward under the limit of the spring-back cross bar 113 and compress the first spring 115. When the trapezoidal push plate 114 moves backward, it will pull the two retracting bottom frames 116 to move backward synchronously. At this time, since the arc tooth plate 117 is ejected by the second spring 118 and the right-angle part of the tooth is abutted against the gear cylinder 112, the arc tooth plate 117 meshes with the gear cylinder 112 when moving backward and drives the reciprocating lead screw 110 to rotate. When the reciprocating lead screw 110 rotates, it drives the two containing bottom frames 104 to move rightward as a whole by using the thread cylinder 111 under the limit of the load-bearing sliding plate 103. When the arc tooth plate 117 moves to the rearmost part, the first cutting table 106 is located directly below the positioning ring platform 201, and the second cutting table 119 moves out from below the positioning ring platform 201 and is located at the rightmost side.

[0024] Please refer to Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 and Figure 13, which shows the overall structure of the cutting lifting mechanism 2. The cutting lifting mechanism 2 includes a positioning ring platform 201, and the positioning ring platform 201 is fixedly installed on the top of the load-bearing base 101 through a bracket. The second cutting table 119 is located inside the positioning ring platform 201. Linear guide rods 202 are fixedly connected to both sides of the positioning ring platform 201 through brackets. Second positioning grooves 203 that are used in cooperation with the first positioning grooves 108 are provided at the front and rear of both sides of the positioning ring platform 201. Retaining guide rods 204 are fixedly connected to the front and rear of both sides of the positioning ring platform 201. A side pressing plate 205 is slidably installed between the surfaces of two retaining guide rods 204 on the same side. A third spring 206 is sleeved on the surface of the retaining guide rod 204. Positioning insertion plates 207 are fixedly connected to the front and rear of the opposite sides of the two side pressing plates 205, and one end of the positioning insertion plate 207 passes through the second positioning groove 203 and extends to the inside of the first positioning groove 108. A bearing round rod 208 is fixedly connected to the top of the side pressing plate 205 through a bracket. A linear motor 209 is slidably installed on the surface of the linear guide rod 202. An arch-shaped plate 210 is fixedly connected between the tops of the two linear motors 209. Inclined surface pulling plates 211 that are used in cooperation with the lifting cross bar 107 and the trapezoidal push plate 114 are fixedly connected to the opposite sides of the two linear motors 209. A cylinder 212 is fixedly connected to the top of the arch-shaped plate 210 through an opening. The bottom end of the cylinder 212 is fixedly connected to a five-axis laser cutting head 213. The model of the five-axis laser cutting head 213 is TL-3DMETAL. A first lifting amount groove 214 and a second lifting amount groove 215 are respectively provided at the rear part of the cylinder 212. When the cylinder 212 pushes the five-axis laser cutting head 213 to perform the lifting and cutting process, the lifting distance is only within the spacing of the second lifting amount groove 215. When the cylinder 212 retracts into the first lifting amount groove 214, at this time, the reverse pressing plate 217 starts to contact the bearing round rod 208. A bent frame 216 is fixedly connected to the lower part of the surface of the cylinder 212. Reverse pressing plates 217 that are used in cooperation with the bearing round rod 208 are fixedly connected to both ends of the bent frame 216, and the reverse pressing plate 217 is located between the linear motor 209 and the positioning ring platform 201.

[0025] After the first cutting table 106 and the second cutting table 119 have completed the position adjustment, the linear motor 209 is then started to drive the arch plate 210 to start moving forward, and the trapezoidal push plate 114 is no longer squeezed. The trapezoidal push plate 114 pushes the two retracted bottom frames 116 forward and resets under the elastic force of the first spring 115. When the arc-shaped tooth plate 117 moves forward, the arc surface of the tooth contacts the gear cylinder 112, but the arc surface cannot produce a large conflict with the gear cylinder 112 and is therefore squeezed down. When the gear cylinder 112 is lowered to the inner side of the retracted bottom frame 116, the gear cylinder 112 will not be driven to rotate. After the trapezoidal push plate 114 is completely reset, the left inclined plate 211 contacts the lifting cross bar 107 on one side of the first cutting table 106. Then, as the linear motor 209 continues to move forward, the inclined plate 211 uses the inclined surface to squeeze the lifting cross bar 107, thereby driving the first cutting table 106 to slowly rise under the limit of the lifting guide column 105. When the lifting cross bar 107 is located at the inclined plate 211, the lifting cross bar 107 is lifted. When the linear motor 209 reaches the smooth position at the top, the linear motor 209 stops moving, and then the cylinder 212 is started to push the five-axis laser cutting head 213 down so that the first lifting groove 214 is located outside. When the first lifting groove 214 is located outside, the reverse pressure plate 217 will also drop and separate from the pressure-bearing round rod 208 and no longer squeeze it. Then, the side pressure plate 205 inserts the positioning plug plate 207 into the second positioning groove 203 and the inner side of the first positioning groove 108 under the thrust of the third spring 206. At this time, the first cutting table 106 is fixed, and then the linear motor 209 drives the bow plate 210 to move back and forth. At the same time, the cylinder 212 is started to drive the five-axis laser cutting head 213 to cut the steel. During the cutting process, the lifting area of ​​the cylinder 212 is always located at the position of the first lifting groove 214. During the cutting process, the new steel to be cut is placed on the top of the second cutting table 119 using the lifting equipment again, which is convenient for subsequent processing.

[0026] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A steel section laser cutting machine that is convenient for loading and unloading, comprising a loading switching mechanism (1), characterized in that: The feeding switching mechanism (1) comprises a load-bearing base (101), and a cutting lifting mechanism (2) is installed on the top of the load-bearing base (101); The top of the load-bearing base (101) is fixedly connected to a guide slide seat (102), a load-bearing slide plate (103) is slidably mounted on the surface of the guide slide seat (102), both sides of the top of the load-bearing slide plate (103) are fixedly connected to a holding base frame (104), a lifting guide column (105) is fixedly connected to the front side of the top of the holding base frame (104), a first cutting table (106) and a second cutting table (119) are slidably mounted on the surfaces of the two lifting guide columns (105), and the first cutting table (106) is located on the inner side of the holding base frame (104), first positioning grooves (108) are provided at the front and rear parts of both sides of the first cutting table (106) and the second cutting table (119), and a lifting cross bar (107) is fixedly connected to the opposite side of the first cutting table (106) and the second cutting table (119).

2. The steel section laser cutting machine that is convenient for loading and unloading according to claim 1 is characterized in that: A linkage groove (109) is provided at the rear of the load-bearing base (101); a reciprocating screw rod (110) is rotatably connected between the two sides of the inner cavity of the linkage groove (109) via a bearing member; a threaded barrel (111) is threadedly connected to the surface of the reciprocating screw rod (110); the threaded barrel (111) is fixedly connected to the first cutting table (106) and the second cutting table (119) via a bracket; and a gear barrel (112) is fixedly connected to the two sides of the surface of the reciprocating screw rod (110).

3. The steel section laser cutting machine that is convenient for loading and unloading according to claim 2 is characterized in that: Rebound cross bars (113) are slidably mounted on both sides of the load-bearing base (101); a trapezoidal push plate (114) is fixedly connected between the rear ends of the two rebound cross bars (113); a first spring (115) is sleeved on the surface of the rebound cross bar (113); a retractable bottom frame (116) is fixedly connected to both sides of the surface of the trapezoidal push plate (114) via a fixing plate; the retractable bottom frame (116) is located on the inner side of the linkage groove (109); an arc-shaped tooth plate (117) meshing with the gear cylinder (112) is slidably mounted on the inner side of the retractable bottom frame (116); a second spring (118) is fixedly connected between the arc-shaped tooth plate (117) and the bottom of the inner cavity of the retractable bottom frame (116); and a plurality of second springs (118) are provided.

4. The steel section laser cutting machine that is convenient for loading and unloading according to claim 3 is characterized in that: The cutting lifting mechanism (2) comprises a positioning ring platform (201), and the positioning ring platform (201) is fixedly mounted on the top of the load-bearing base (101) via a bracket, the second cutting platform (119) is located on the inner side of the positioning ring platform (201), both sides of the positioning ring platform (201) are fixedly connected to linear guide rods (202) via brackets, and the front and rear parts of both sides of the positioning ring platform (201) are provided with second positioning grooves (203) for use with the first positioning grooves (108).

5. The steel section laser cutting machine that is convenient for loading and unloading according to claim 4 is characterized in that: The front and rear parts of both sides of the positioning ring platform (201) are fixedly connected with a blocking guide rod (204), and a side pressure plate (205) is slidably installed between the surfaces of the two blocking guide rods (204) on the same side. The surface of the blocking guide rod (204) is sleeved with a third spring (206), and the front and rear parts of the opposite sides of the two side pressure plates (205) are fixedly connected with a positioning plug plate (207), and one end of the positioning plug plate (207) passes through the second positioning groove (203) and extends to the inner side of the first positioning groove (108), and the top of the side pressure plate (205) is fixedly connected with a pressure-bearing round rod (208) through a bracket.

6. The steel section laser cutting machine that is convenient for loading and unloading according to claim 5 is characterized in that: A linear motor (209) is slidably mounted on the surface of the linear guide rod (202), a bow-shaped plate (210) is fixedly connected between the tops of the two linear motors (209), and an inclined pull plate (211) used in conjunction with a lifting cross bar (107) and a trapezoidal push plate (114) is fixedly connected to the opposite sides of the two linear motors (209).

7. The steel section laser cutting machine that is convenient for loading and unloading according to claim 6 is characterized in that: The top of the arch plate (210) is fixedly connected to a cylinder (212) via an opening, the bottom of the cylinder (212) is fixedly connected to a five-axis laser cutting head (213), and the rear of the cylinder (212) is respectively provided with a first lifting groove (214) and a second lifting groove (215).

8. The steel section laser cutting machine that is convenient for loading and unloading according to claim 7 is characterized in that: A bent frame (216) is fixedly connected to the lower portion of the surface of the cylinder (212), and both ends of the bent frame (216) are fixedly connected to a reverse pressure plate (217) used in conjunction with the pressure-bearing round rod (208), and the reverse pressure plate (217) is located between the linear motor (209) and the positioning ring platform (201).

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