Profile laser cutting device and cutting method for steel structure production

Abstract

The invention relates to the technical field of laser cutting, and discloses a profile laser cutting device for steel structure production, which comprises a mounting frame, a traction component and a cutting mechanism are mounted on the mounting frame, the cutting mechanism comprises a circular track and a support body, a connecting support is mounted on the support body, and a movable support is slidably mounted on the connecting support. A laser head is rotationally installed on the movable support, a rotating shaft formed at the installation position is in power connection with a second motor, a gear ring is installed on the end face of the circular ring rail, a threaded shaft is installed on the support body and divided into two threaded sections with the opposite thread rotating directions, and the outer portions of the two threaded sections are each provided with a sliding support in a threaded mode. The sliding support is slidably connected with the support body, a sliding seat is slidably mounted on the circular track, a convex shaft extends on the sliding seat, the sliding support is movably connected with the convex shaft, a gear is mounted on the sliding seat and meshed with the gear ring, and the input end of the gear is in power connection with a first motor after penetrating through the convex shaft.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cutting, and in particular to a profile laser cutting device and a cutting method for steel structure production. Background Art

[0002] Steel structure is a structure made of steel and is one of the types of building structures. Common steel structure profiles include I-beams, channel steels, Z-beams, etc. During the steel structure manufacturing process, it is inevitable to cut the profiles. Laser cutting is one of the profile cutting methods.

[0003] Laser cutting technology refers to the use of lasers to cut profiles. There are some shortcomings in the existing laser cutting technology. For example, taking an I-beam as an example, an I-beam generally includes two horizontal steel plates and a vertical steel plate arranged between the two horizontal steel plates. The existing technology generally performs laser cutting on the two horizontal steel plates and the vertical steel plate in sequence. On the one hand, it is necessary to repeatedly clamp the I-beam so that the horizontal steel plate or the vertical steel plate is facing the laser generator. On the other hand, due to the shape of the I-beam, when cutting the connection between the horizontal steel plate and the vertical steel plate, it is necessary to refer to Fig. 9 , it is necessary to cut the connection from top to bottom first, and then cut the vertical steel plate from left to right. However, when cutting from top to bottom, due to the existence of the vertical steel plate below the connection, it is equivalent to cutting a notch on the thicker workpiece, and the cutting is easily affected. When cutting from left to right, due to the limitation of the horizontal steel plate, the laser generator cannot extend close to the vertical steel plate at the beginning, and the distance from the vertical steel plate is far, which can easily exceed the required value of the distance between the laser head and the workpiece in laser cutting, which can also easily affect the cutting.

[0004] Based on the above, the present invention proposes a profile laser cutting device and a cutting method for steel structure production with high cutting efficiency and good cutting quality. Summary of the invention

[0005] In order to solve the problems mentioned in the above background, the present invention provides a profile laser cutting device and cutting method for steel structure production.

[0006] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows.

[0007] A profile laser cutting device for steel structure production, comprising a mounting frame, a traction member and a cutting mechanism mounted on the mounting frame, the cutting mechanism comprising a circular track and a bracket body and a connecting assembly arranged therebetween, the axis of the circular track being parallel to the direction in which the traction member pulls the profile to move, the connecting assembly being used to drive the bracket body to move close to or away from the axis of the circular track and to drive the bracket body to rotate around the axis of the circular track;

[0008] A connecting bracket is installed on the bracket body, a movable bracket is slidably installed on the connecting bracket, and a linear module three for driving the movable bracket to move is also installed on the connecting bracket. A laser head is rotatably installed on the movable bracket, and a rotating shaft formed at the rotating installation position forms a power connection with a motor two arranged on the movable bracket, and the axis centerline direction of the rotating shaft is parallel to the axis centerline direction of the circular track.

[0009] Furthermore, the connection assembly includes a gear ring coaxially arranged on the end surface of the circular track, a threaded shaft is installed on the bracket body, the axis direction of the threaded shaft is perpendicular to the axis direction of the circular track, and the sliding direction of the movable bracket is parallel to the axis direction of the threaded shaft;

[0010] The threaded shaft is divided into two threaded sections with opposite thread rotation directions along its own axis. A sliding bracket is threadedly installed on the outside of each of the two threaded sections. The sliding bracket and the bracket body form a sliding guide fit along the axis of the threaded shaft.

[0011] Furthermore, a sliding seat is slidably installed on the circular track, and a cam shaft extends from the sliding seat. The axial centerline direction of the cam shaft is parallel to the axial centerline direction of the circular track. The sliding bracket is movably connected to the cam shaft. The cam shaft is in the shape of a hollow shaft. A gear is installed on the sliding seat, and the gear is meshed with the gear ring. The input end of the gear shaft of the gear passes through the cam shaft to form a power connection with a motor arranged on the sliding bracket.

[0012] Furthermore, the traction component includes a conveying assembly, which includes a lifting bracket and a linear module for driving the lifting bracket to move in a vertical direction. A conveyor belt is installed on the lifting bracket. Two groups of conveying assemblies are arranged along the conveying direction, and the cutting mechanism is located between the two groups of conveying assemblies.

[0013] Furthermore, a plurality of support rollers are arranged in an array along the conveying direction inside the conveyor belt, the support rollers are rotatably connected to the lifting brackets, and the support rollers are used to support the upper surface of the conveyor belt.

[0014] Furthermore, a straightening assembly is installed on the conveying assembly.

[0015] Furthermore, the straightening assembly includes two push rods respectively located on both sides of the conveyor belt along the conveying direction, the extension direction of the push rods is parallel to the conveying direction of the conveyor belt, and a side bracket extends from each side opposite to the other of the two push rods. The side bracket is driven to move by a linear module installed on the lifting bracket and the movement direction of the side bracket is perpendicular to the conveying direction of the conveyor belt.

[0016] A cutting method of a profile laser cutting device for steel structure production:

[0017] The profile to be cut is an I-beam, which includes an upper horizontal steel plate, a lower horizontal steel plate and a vertical steel plate located therebetween;

[0018] Step 1: The I-beam is pulled through the circular track by a pulling member so that the center line of the I-beam coincides with the axis line of the circular track;

[0019] Step 2: The two motors 1 cooperate to drive the bracket body to rotate around the axis of the circular track, so that the threaded shaft is arranged horizontally. At the same time, the motor 2 drives the rotating shaft to rotate, so that the laser head is arranged vertically. Then, the two motors 1 cooperate to drive the bracket body to move in the vertical direction close to the axis of the circular track, so that the distance between the laser generating end of the laser head and the upper horizontal steel plate of the I-beam reaches the set value;

[0020] Step 3: The laser head is driven to move by the linear module 3, and the laser head is started at the same time, so as to realize the laser cutting of the upper horizontal steel plate. During the cutting process, the connection between the upper horizontal steel plate and the vertical steel plate is skipped;

[0021] Step 4: through the cooperation of two motors, the bracket body is driven to move away from the I-beam first, and then rotate around the axis of the circular track, so that the threaded shaft is arranged vertically;

[0022] Then, the two motors 1 cooperate to drive the bracket body to move close to the axis of the circular track. At the same time, the linear module 3 drives the laser head to move so that the upper surface of the outer shell of the laser head is lower than the lower end surface of the upper horizontal steel plate. At the same time, the laser generating end of the laser head is driven to deflect upward by the motor 2. The three cooperate to make the laser generating end of the laser head close to the connection between the upper horizontal steel plate and the vertical steel plate.

[0023] Step 5: The laser generating end of the laser head is deflected downward by the second motor, and the laser head is started at the same time, so as to realize the laser cutting of the connection between the upper horizontal steel plate and the vertical steel plate. After the laser head is arranged horizontally, the second motor stops running, and the linear module three drives the laser head to move downward to realize the laser cutting of the vertical steel plate.

[0024] When the outer shell of the laser head approaches the lower horizontal steel plate, the linear module three stops running, and the motor two drives the laser generating end of the laser head to deflect downward, thereby realizing laser cutting of the connection between the lower horizontal steel plate and the vertical steel plate;

[0025] Step 6: Through the cooperation of two motors 1, the bracket body is driven to move away from the I-beam first, and then rotate around the axis of the circular track, so that the threaded shaft is arranged horizontally and located below the I-beam. At the same time, motor 2 drives the laser head to deflect, so that the laser generating end of the laser head is vertically facing upward. Then, through the cooperation of two motors 1, the bracket body is driven to move close to the I-beam, so that the laser generating end of the laser head is close to the lower horizontal steel plate;

[0026] Step 7: The laser head is driven by the linear module to move and start at the same time, thereby realizing laser cutting of the lower horizontal steel plate. During the cutting process, the connection between the lower horizontal steel plate and the vertical steel plate is skipped.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] On the one hand, the present application can complete the cutting of steel structure profiles at one time with high cutting efficiency. On the other hand, when cutting, the present application first skips the connection and completes the cutting of the upper horizontal steel plate, and then cuts the connection and the vertical steel plate. In this way, the cutting of the connection is equivalent to the cutting of the normal steel plate, and the cutting is not affected. The laser head can be extended close to the vertical steel plate and will not exceed the required value of the distance between the laser head and the workpiece. Similarly, the cutting of another connection is the same. Therefore, the cutting of the present application is simple and smooth, without delay, and the cutting efficiency is high. Through the cooperation of linear module three, motor two and two motors one, the multiple free ends of the laser head can be driven to rotate and move, which can be suitable for cutting steel structure profiles of different shapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 The structure of the present invention is schematically shown Figure 1 ;

[0030] Figure 2 The structure of the present invention is schematically shown Figure 2 ;

[0031] Figure 3 is a schematic diagram of the structure of the traction component;

[0032] Figure 4 Schematic diagram of the cutting mechanism Figure 1 ;

[0033] Figure 5 Schematic diagram of the cutting mechanism Figure 2 ;

[0034] Figure 6 It is a schematic diagram of the connection between the circular track and the bracket body;

[0035] Figure 7 Schematic diagram of the bracket body, connecting bracket and laser head Figure 1 ;

[0036] Figure 8 Schematic diagram of the bracket body, connecting bracket and laser head Figure 2 ;

[0037] Fig. 9 The present invention is a schematic diagram of cutting the connection of an I-beam in the prior art.

[0038] The reference numerals in the accompanying drawings are:

[0039] 100, mounting frame; 200, traction member; 201, lifting bracket; 202, linear module one; 203, conveyor belt; 204, push rod; 205, side bracket; 206, linear module two; 300, cutting mechanism; 301, circular track; 302, gear ring; 303, bracket body; 304, sliding bracket; 305, threaded shaft; 306, slide seat; 307, gear; 308, motor one; 309, power transmission member; 310, connecting bracket; 311, movable bracket; 312, linear module three; 313, laser head; 314, motor two. DETAILED DESCRIPTION

[0040] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0041] In the drawings of the present application, a refers to the steel structure profile to be cut, and the present application is explained by taking the steel structure profile being an I-beam as an example.

[0042] Reference Figure 1-Figure 8 A profile laser cutting device for steel structure production includes a mounting frame 100, on which a traction member 200 and a cutting mechanism 300 are installed. The former is used to pull the steel structure profile to a cutting position, and the latter uses a laser cutting method to cut the steel structure profile.

[0043] Traction member 200:

[0044] Reference Figure 3 The traction member 200 includes a conveying assembly, which includes a lifting bracket 201 and a linear module 202 for driving the lifting bracket 201 to move in a vertical direction. A conveyor belt 203 is installed on the lifting bracket 201. Furthermore, the steel structure profile is heavy, so a plurality of support rollers can be arranged in an array along the conveying direction inside the conveyor belt 203. The support rollers are rotatably connected to the lifting bracket 201, and the support rollers are used to support the steel structure profile to prevent the conveyor belt 203 from being unable to bear the weight of the steel structure profile.

[0045] Two groups of conveying components are arranged along the conveying direction and are respectively named as conveying component one and conveying component two. The area between the two groups of conveying components is the cutting position. In addition, a straightening component is installed on conveying component one.

[0046] The straightening assembly includes two push rods 204 respectively located on both sides of the conveying direction of the conveyor belt 203. The extension direction of the push rods 204 is parallel to the conveying direction of the conveyor belt 203. A side bracket 205 extends from each side opposite to the other of the two push rods 204. The side bracket 205 is driven to move by the linear module 206 installed on the lifting bracket 201, and the movement direction of the side bracket 205 is perpendicular to the conveying direction of the conveyor belt 203.

[0047] First, the steel structure profile is placed on the conveyor belt 203 of the conveying component one through existing technologies such as the crane arm, and then the side bracket 205 is driven to move through the linear module 206. The two side brackets 205 move in different directions at the same speed and approach each other to align the steel structure profile. Then, the steel structure profile is pulled and moved by the conveyor belt 203, so that the part of the steel structure profile to be cut is located at the cutting position. Finally, the height of the lifting bracket 201 is adjusted through the linear module 1 202 to make the center line of the steel structure profile coincide with the axis line of the circular track 301 in the cutting mechanism 300.

[0048] Cutting mechanism 300:

[0049] Reference Figure 1 and Figure 2 , the cutting mechanism 300 is located in the area between the two groups of conveying components.

[0050] Reference Figure 4-Figure 8 The cutting mechanism 300 includes a circular track 301 and a bracket body 303 .

[0051] The axis of the circular track 301 is parallel to the conveying direction of the conveyor belt 203 , and a gear ring 302 is coaxially mounted on the end surface of the circular track 301 .

[0052] A threaded shaft 305 is installed on the bracket body 303, and the axial direction of the threaded shaft 305 is perpendicular to the axial direction of the circular track 301. The threaded shaft 305 is divided into two threaded sections with opposite thread rotation directions along its own axial direction. A sliding bracket 304 is threadedly installed on the outside of each of the two threaded sections. The sliding bracket 304 also forms a sliding guide with the bracket body 303 along the axial direction of the threaded shaft 305. The thread pitch of the threaded shaft 305 is relatively large. Therefore, when one sliding bracket 304 is subjected to external force, the sliding bracket 304 can slide under the drive of the external force and drive the threaded shaft 305 to rotate, so that the other sliding bracket 304 also slides accordingly, that is, the two sliding brackets 304 move synchronously.

[0053] A slide 306 is slidably installed on the circular track 301, a cam shaft extends from the slide 306, the sliding bracket 304 is movably connected with the cam shaft, the cam shaft is in the shape of a hollow shaft, a gear 307 is installed on the slide 306, the gear 307 is meshed with the ring gear 302, and the input end of the gear shaft of the gear 307 passes through the cam shaft and forms a power connection with the motor 1 308 arranged on the sliding bracket 304 through the power transmission member 309. In addition, two slides 306, gears 307, motors 1 308 and power transmission members 309 are each provided corresponding to the sliding bracket 304.

[0054] When the motor 1 308 is running, it can drive the gear 307 to rotate through the power transmission member 309, so that the gear 307 rotates around its own axis while revolving around the axis of the gear ring 302. The rotation of the gear 307 will bring the slide 306 to revolve together.

[0055] In the present application, since there are two components such as the sliding bracket 304, when the two motors 308 drive the two gears 307 to rotate in the same direction and at the same speed at the same time, the two gears 307 will revolve around the two slides 306 to rotate in the same direction and at the same speed, thereby driving the bracket body 303 to rotate around the axis of the circular track 301. When the two motors 308 drive the two gears 307 to rotate in different directions and at the same speed at the same time, the two gears 307 will revolve around the two slides 306 to rotate in different directions and at the same speed, thereby driving the bracket body 303 to move closer to or away from the axis of the circular track 301.

[0056] A connecting bracket 310 is also installed on the bracket body 303 , and a movable bracket 311 is slidably installed on the connecting bracket 310 along the axial direction of the threaded shaft 305 . A linear module 312 for driving the movable bracket 311 to move is also installed on the connecting bracket 310 .

[0057] A laser head 313 is rotatably mounted on the movable bracket 311, and a rotating shaft formed at the rotating mounting position forms a power connection with a motor 314 arranged on the movable bracket 311. The axis centerline direction of the rotating shaft is parallel to the axis centerline direction of the circular track 301. The laser head 313 is used to emit a laser for cutting, which can be realized by existing technology and will not be elaborated on.

[0058] The linear module mentioned in this application can be the existing electric telescopic rod technology, or the existing screw linear motion technology, etc., which will not be described in detail.

[0059] A cutting method of a profile laser cutting device for steel structure production:

[0060] Taking an I-beam as an example, the cross section of the I-beam is H-shaped. When placed on the conveyor belt 203, it includes two upper and lower horizontal steel plates and a vertical steel plate vertically arranged between the two horizontal steel plates. The connection between the vertical steel plate and the horizontal steel plate is named a connection point.

[0061] Step 1: Place the I-beam on the conveyor belt 203 of the conveying assembly 1 by using existing technologies such as a crane arm, then drive the side bracket 205 to move by the linear module 206, and the two side brackets 205 move in different directions at the same speed and approach each other to align the I-beam, then pull the I-beam to move by the conveyor belt 203, so that the part to be cut of the I-beam is located at the cutting position, and at the same time adjust the height of the lifting bracket 201 by the linear module 1 202, so that the center line of the I-beam coincides with the axis line of the circular track 301 in the cutting mechanism 300;

[0062] Step 2: The two motors 1 308 cooperate to drive the bracket body 303 to rotate around the axis of the circular track 301, so that the threaded shaft 305 is arranged horizontally. At the same time, the motor 2 314 drives the rotating shaft to rotate, so that the laser head 313 is arranged vertically. Then, the two motors 1 308 cooperate to drive the bracket body 303 to move in the vertical direction close to the axis of the circular track 301, so that the distance between the laser generating end of the laser head 313 and the upper horizontal steel plate of the I-beam reaches the set value;

[0063] Steps 1 and 2 can occur simultaneously;

[0064] Step 3: The laser head 313 is driven to move by the linear module 312, and the laser head 313 is started at the same time, so as to realize the laser cutting of the upper horizontal steel plate. During the cutting process, the connection between the upper horizontal steel plate and the vertical steel plate is skipped;

[0065] Step 4: through the cooperation of two motors 1 308, the bracket body 303 is driven to move away from the I-beam first, and then rotate around the axis of the circular track 301, so that the threaded shaft 305 is arranged vertically;

[0066] Then, the two motors 1 308 cooperate to drive the bracket body 303 to move close to the axis of the circular track 301. At the same time, the linear module 312 drives the laser head 313 to move, so that the upper surface of the outer shell of the laser head 313 is slightly lower than the lower end surface of the upper horizontal steel plate. At the same time, the motor 2 314 drives the laser head 313 to deflect, so that the laser generating end of the laser head 313 deflects upward. The three cooperate to make the laser generating end of the laser head 313 close to the connection between the upper horizontal steel plate and the vertical steel plate.

[0067] Step 5: The laser head 313 is driven to deflect by the motor 2 314, so that the laser generating end of the laser head 313 deflects downward, and the laser head 313 is started at the same time, so as to realize the laser cutting of the connection between the upper horizontal steel plate and the vertical steel plate, until the laser head 313 is arranged horizontally, the motor 2 314 stops running, and the linear module 3 312 drives the laser head 313 to move downward, so as to realize the laser cutting of the vertical steel plate;

[0068] When the outer shell of the laser head 313 is close to the lower horizontal steel plate, the linear module 312 stops running, and the motor 2 314 drives the laser head 313 to deflect, so that the laser generating end of the laser head 313 deflects downward, thereby achieving laser cutting of the connection between the lower horizontal steel plate and the vertical steel plate;

[0069] Step 6: Through the cooperation of the two motors 1 308, the bracket body 303 is driven to move away from the I-beam first, and then rotate around the axis of the circular track 301, so that the threaded shaft 305 is arranged horizontally and located below the I-beam. At the same time, the motor 2 314 drives the laser head 313 to deflect, so that the laser generating end of the laser head 313 is vertically facing upward, and then, through the cooperation of the two motors 1 308, the bracket body 303 is driven to move close to the I-beam, so that the laser generating end of the laser head 313 is close to the lower horizontal steel plate;

[0070] Step seven: The laser head 313 is driven to move by the linear module three 312, and the laser head 313 is started at the same time, so as to realize the laser cutting of the lower horizontal steel plate. During the cutting process, the connection between the lower horizontal steel plate and the vertical steel plate is skipped.

[0071] At this point, the laser cutting of the I-beam is completed.

[0072] From the above process description, we can know that:

[0073] On the one hand, the present application can complete the cutting of steel structure profiles at one time with high cutting efficiency. On the other hand, when cutting, the present application first skips the connection and completes the cutting of the upper horizontal steel plate, and then cuts the connection and the vertical steel plate. In this way, the cutting of the connection is equivalent to the cutting of the normal steel plate, and the cutting is not affected. The laser head can be extended close to the vertical steel plate and will not exceed the required value of the distance between the laser head and the workpiece. Similarly, the cutting of another connection is the same. Therefore, the cutting of the present application is simple and smooth, without delay, and the cutting efficiency is high. Through the cooperation of linear module three, motor two and two motors one, the multiple free ends of the laser head can be driven to rotate and move, which can be suitable for cutting steel structure profiles of different shapes.

[0074] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A profile laser cutting device for steel structure production, comprising a mounting frame (100), characterized in that: A traction member (200) and a cutting mechanism (300) are mounted on the mounting frame (100); the cutting mechanism (300) comprises a circular track (301), a bracket body (303) and a connecting assembly arranged therebetween; the axis of the circular track (301) is parallel to the direction in which the traction member (200) pulls the profile to move; the connecting assembly is used to drive the bracket body (303) to move towards or away from the axis of the circular track (301) and to drive the bracket body (303) to rotate around the axis of the circular track (301); A connecting bracket (310) is installed on the bracket body (303), a movable bracket (311) is slidably installed on the connecting bracket (310), a linear module (312) for driving the movable bracket (311) to move is also installed on the connecting bracket (310), a laser head (313) is rotatably installed on the movable bracket (311), and a rotating shaft formed at the rotating installation position is dynamically connected to a motor (314) arranged on the movable bracket (311), and the axis centerline direction of the rotating shaft is parallel to the axis centerline direction of the circular track (301).

2. A profile laser cutting device for steel structure production according to claim 1, characterized in that: The connection assembly comprises a gear ring (302) coaxially arranged on the end surface of the circular track (301), a threaded shaft (305) is installed on the bracket body (303), the axis direction of the threaded shaft (305) is perpendicular to the axis direction of the circular track (301), and the sliding direction of the movable bracket (311) is parallel to the axis direction of the threaded shaft (305); The threaded shaft (305) is divided into two threaded sections with opposite thread rotation directions along its own axis. A sliding bracket (304) is threadedly mounted on the outside of each of the two threaded sections. The sliding bracket (304) and the bracket body (303) form a sliding guide fit along the axis of the threaded shaft (305).

3. A profile laser cutting device for steel structure production according to claim 2, characterized in that: A slide seat (306) is slidably mounted on the circular track (301), a convex shaft is extended from the slide seat (306), the axis centerline direction of the convex shaft is parallel to the axis centerline direction of the circular track (301), a sliding bracket (304) is movably connected to the convex shaft, the convex shaft is in the shape of a hollow shaft, a gear (307) is mounted on the slide seat (306), the gear (307) is meshed with the gear ring (302), and the input end of the gear shaft of the gear (307) passes through the convex shaft and forms a power connection with a motor 1 (308) arranged on the sliding bracket (304).

4. A profile laser cutting device for steel structure production according to claim 1 or 3, characterized in that: The traction member (200) comprises a conveying assembly, which comprises a lifting bracket (201) and a linear module (202) for driving the lifting bracket (201) to move in a vertical direction. A conveying belt (203) is installed on the lifting bracket (201). Two groups of conveying assemblies are arranged along the conveying direction, and the cutting mechanism (300) is located between the two groups of conveying assemblies.

5. A profile laser cutting device for steel structure production according to claim 4, characterized in that: A plurality of support rollers are arranged in an array along the conveying direction inside the conveyor belt (203), and the support rollers are rotatably connected to the lifting bracket (201). The support rollers are used to support the upper surface of the conveyor belt (203).

6. A profile laser cutting device for steel structure production according to claim 4, characterized in that: A straightening component is installed on the conveying component.

7. A profile laser cutting device for steel structure production according to claim 6, characterized in that: The alignment assembly comprises two push rods (204) respectively located on both sides of the conveying direction of the conveyor belt (203); the extension direction of the push rods (204) is parallel to the conveying direction of the conveyor belt (203); a side bracket (205) extends from each of the two push rods (204) on the opposite sides; the side bracket (205) is driven to move by a linear module 2 (206) installed on a lifting bracket (201); and the movement direction of the side bracket (205) is perpendicular to the conveying direction of the conveyor belt (203).

8. The cutting method of the profile laser cutting device for steel structure production as claimed in claim 3, characterized in that: The steps include: The profile to be cut is an I-beam, which includes an upper horizontal steel plate, a lower horizontal steel plate and a vertical steel plate located therebetween; Step 1: Using a pulling member (200) to pull an I-beam through the circular track (301), so that the center line of the I-beam coincides with the axis line of the circular track (301); Step 2: by cooperating with two motors 1 (308), the bracket body (303) is driven to rotate around the axis of the circular track (301), so that the threaded shaft (305) is arranged horizontally. At the same time, the motor 2 (314) drives the rotating shaft to rotate, so that the laser head (313) is arranged vertically. Then, by cooperating with the two motors 1 (308), the bracket body (303) is driven to move in the vertical direction close to the axis of the circular track (301), so that the distance between the laser generating end of the laser head (313) and the upper horizontal steel plate of the I-beam reaches a set value; Step 3: The laser head (313) is driven to move by the linear module 3 (312), and the laser head (313) is started, so as to realize laser cutting of the upper horizontal steel plate. During the cutting process, the connection between the upper horizontal steel plate and the vertical steel plate is skipped; Step 4: by cooperating with two motors 1 (308), the bracket body (303) is driven to first move away from the I-beam, and then rotate around the axis of the circular track (301), so that the threaded shaft (305) is arranged vertically; Then, the bracket body (303) is driven to move close to the axis of the circular track (301) through the cooperation of the two motors 1 (308), and at the same time, the laser head (313) is driven to move through the linear module 3 (312), so that the upper surface of the outer shell of the laser head (313) is lower than the lower end surface of the upper horizontal steel plate. At the same time, the laser generating end of the laser head (313) is driven to deflect upward through the motor 2 (314), and the three cooperate to make the laser generating end of the laser head (313) close to the connection between the upper horizontal steel plate and the vertical steel plate; Step 5: The laser generating end of the laser head (313) is driven to deflect downward by the motor 2 (314), and the laser head (313) is started at the same time, so as to realize the laser cutting of the connection between the upper horizontal steel plate and the vertical steel plate, until the laser head (313) is arranged horizontally, the motor 2 (314) stops running, and the linear module 3 (312) drives the laser head (313) to move downward, so as to realize the laser cutting of the vertical steel plate; When the outer shell of the laser head (313) approaches the lower horizontal steel plate, the linear module three (312) stops running, and the motor two (314) drives the laser generating end of the laser head (313) to deflect downward, thereby achieving laser cutting of the connection between the lower horizontal steel plate and the vertical steel plate; Step 6: by cooperating with two motors 1 (308), the bracket body (303) is driven to move away from the I-beam first, and then rotate around the axis of the circular track (301), so that the threaded shaft (305) is arranged horizontally and is located below the I-beam. At the same time, the motor 2 (314) drives the laser head (313) to deflect, so that the laser generating end of the laser head (313) is vertically facing upward. Then, by cooperating with the two motors 1 (308), the bracket body (303) is driven to move close to the I-beam, so that the laser generating end of the laser head (313) is close to the lower horizontal steel plate. Step 7: The laser head (313) is driven to move by the linear module 3 (312), and the laser head (313) is started, thereby realizing laser cutting of the lower horizontal steel plate. During the cutting process, the connection between the lower horizontal steel plate and the vertical steel plate is skipped.

Images