Multifunctional steel pipe laser cutting equipment

Abstract

Multifunctional steel pipe laser cutting equipment comprises a positioning device used for positioning a steel pipe and a cutting device used for cutting the steel pipe, the cutting device comprises a guide rail, a laser cutting head arranged on the guide rail and a movement driving device used for driving the laser cutting head to move on the guide rail, and the cutting device further comprises a cutting frame body; a rotating frame and a rotating driving device are arranged on the cutting frame body, and the guide rail is clamped in the rotating frame and is driven by the rotating driving device to integrally rotate. The laser cutting head has the advantages that through the linkage design of the rotating frame and the rotating driving device, accurate adjustment of the overall angle of the guide rail is achieved, and the laser cutting head can form notches with different inclination angles.

Description

Technical Field

[0001] This utility model relates to a cutting device, and more particularly to a multifunctional steel pipe laser cutting device. Background Technology

[0002] In the field of steel tower manufacturing, laser cutting equipment is widely used in the processing of steel pipe components due to its high precision and efficiency. This type of equipment typically uses a CNC system to drive the laser head along a preset path, using a high-energy laser beam to melt or vaporize the metal material to achieve cutting. Specific applications include the blanking of main tower body pipes, connecting node plates, and flanges. During operation, the operator needs to set the cutting parameters (such as laser power, cutting speed, and auxiliary gas pressure) according to the steel pipe specifications. After the pipe is fixed by an automatic positioning device, the equipment completes the continuous cutting operation. After cutting, a cut quality inspection and burr removal process is required to ensure the matching accuracy of subsequent welding and assembly processes.

[0003] However, existing laser cutting technology has significant limitations in addressing the special processing requirements of tower components. Conventional equipment, constrained by the laser head's freedom of movement and attitude adjustment mechanism, can only achieve straight cuts perpendicular to the pipe axis. When the tower structure design requires oblique cuts (such as tapered connection nodes or inclined butt welds), operators must use secondary machining to correct the cut angle, leading to extended processing cycles and increasing the risk of increased surface roughness and out-of-tolerance angle deviations. Furthermore, the cumulative errors generated during manual positioning reduce the fit of multiple pipe components during assembly, directly affecting the overall structural strength and safety performance of the tower. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a multi-functional laser cutting device for steel pipes that can perform multi-axis linkage and thus make oblique cuts on steel pipes.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multifunctional steel pipe laser cutting equipment, comprising a positioning device for positioning the steel pipe and a cutting device for cutting the steel pipe. The cutting device includes a guide rail, a laser cutting head disposed on the guide rail, and a moving drive device for driving the laser cutting head to move on the guide rail. The cutting device also includes a cutting frame, on which a rotating frame and a rotating drive device are disposed. The guide rail is engaged within the rotating frame and the rotating drive device drives the entire guide rail to rotate.

[0006] The beneficial effects of this invention are as follows: Through the linkage design of the rotating frame and the rotating drive device, precise adjustment of the overall angle of the guide rail is achieved, enabling the laser cutting head to form cuts at different tilt angles. The cutting frame provides a stable support base for the rotating mechanism, and the rotating frame adopts a double-sided symmetrical structure design, which can effectively balance the torque during guide rail rotation. As a preferred embodiment, the rotating frame can be equipped with a ring slide rail and ball bearing cooperation structure. The rotating drive device drives the ring slide rail to rotate through gear and rack transmission, allowing the guide rail to achieve a wide range of tilt angle adjustment to meet the needs of different beveling processes. Compared with traditional fixed cutting heads, this structure significantly improves the adaptability of the equipment to different cutting angles, while the overall rotating design avoids accuracy deviations caused by local deflection of the cutting head.

[0007] Furthermore, there are two rotation drive devices, which are respectively arranged on both sides of the rotating frame. A rotating block is provided on the rotating frame. Each side of the rotating block is connected to a rotation drive device. The guide rail is fixed on the rotating block. When the rotation drive devices located on both sides of the rotating block rise and fall, they drive the rotating block to rotate.

[0008] This technical solution achieves precise bidirectional control of the rotating block through a symmetrically arranged rotary drive device on both sides. The two drive devices employ a differential lifting mechanism, controlling the tilt angle of the rotating block by adjusting the difference in lifting stroke between the two sides. As a preferred embodiment, a spherical support structure can be installed at the bottom of the rotating block, and trapezoidal sliders on both sides of the top form a wedge-shaped engagement with the push rods of the drive device. When a height difference occurs between the two drive devices, the trapezoidal sliders generate a horizontal displacement component under the action of the push rods, which is converted into rotational motion of the rotating block. This mechanical transmission method not only improves the linearity of angle adjustment but also enhances system rigidity through the mutual constraint of the dual-side drive forces, effectively preventing vibration and deviation during rotation.

[0009] Furthermore, the rotating frame is provided with a sliding groove for the rotating block to be embedded in, and the center of the rotating block is provided with a cutting groove for the laser cutting head to pass through. The width of the cutting groove is greater than the width of the laser cutting head, and the width of the sliding groove is greater than the width of the cutting groove.

[0010] This structural design effectively solves the problem of motion interference. The fit clearance between the slide and the rotating block is precisely calculated, ensuring both rotational freedom and limiting excessive movement. As a preferred option, a wear-resistant polymer liner can be installed on the inner wall of the slide to maintain fit accuracy even after long-term wear. The cutting groove adopts a flared design, with the opening width larger than the diameter of the laser cutting head, ensuring a safe clearance even at the maximum tilt angle of the cutting head. An adjustable limit block is installed at the bottom of the slide, and the axial movement of the rotating block can be precisely controlled by adjusting the bolts.

[0011] Furthermore, force-applying plates are provided on both sides of the rotating block extending outward toward the sliding groove, and the rotation drive device is a telescopic cylinder, with one telescopic end of the rotation drive device hinged to the force-applying plate.

[0012] This connection method efficiently converts linear motion into rotational torque, and the lever amplification effect of the force-applying plate improves driving efficiency. As a preferred method, the force-applying plate adopts a variable cross-section design, with reinforcing ribs near the root of the rotating block. The end hinge point is optimized by torque calculation, ensuring a linear relationship between the telescopic cylinder stroke and the rotation angle. The hinge uses a self-lubricating spherical plain bearing, with its inner ring interference-fitted with the force-applying plate and its outer ring fixed to the telescopic cylinder push rod via a cross-groove connector, capable of withstanding radial loads and accommodating a certain angle of deflection. A ball joint support is installed at the bottom of the telescopic cylinder body to compensate for coaxiality errors during installation.

[0013] Furthermore, the cutting device also includes a drive belt sleeved on the output end of the mobile drive device and clamping plates clamping and fixing the drive belt on both sides. The drive belt is respectively disposed on both sides of the guide rail and wound around the output end of the mobile drive device, and the laser cutting head is disposed on the clamping plates.

[0014] This transmission structure achieves high-precision linear motion, and the dual-sided synchronous drive ensures the stability of the cutting head. As a preferred method, the drive belt uses a steel-core polyurethane synchronous belt, whose teeth precisely mesh with the drive wheels. A preload adjustment mechanism is installed inside the clamping plate, and an eccentric wheel clamping device maintains constant belt tension. A grating ruler feedback system is installed on both sides of the guide rail, and the clamping plate integrates slider-type linear bearings with staggered ball arrays, ensuring the cutting head maintains a high level of positioning accuracy even under cutting reaction forces. The moving drive device uses a dual-output-shaft servo motor, achieving absolute synchronization of the two drive wheels via a coupling. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the cutting device according to an embodiment of the present invention;

[0017] Figure 3 This is a partial enlarged view of the laser cutting head in an embodiment of this utility model. Detailed Implementation

[0018] This utility model embodiment provides a multifunctional steel pipe laser cutting device, such as... Figure 1-3As shown: The equipment includes a positioning device 1 and a cutting device 2. The positioning device 1 uses a conventional clamping mechanism to fix the position of the steel pipe. The cutting device 2 includes a cutting frame 21, on which a rotating frame 211 and two rotating drive devices 212 are mounted. The two rotating drive devices 212 are symmetrically arranged on the left and right sides of the rotating frame 211. The rotating frame 211 has a sliding groove 213 inside, and a rotatable rotating block 214 is embedded in the sliding groove 213. The center of the rotating block 214 has a cutting groove 215 with a width greater than that of the laser cutting head 23. The width of the sliding groove 213 is designed to be greater than the width of the cutting groove 215.

[0019] The rotating block 214 extends outward on both sides to form force-applying plates 216. Both rotating drive devices 212 adopt a telescopic cylinder structure, and the piston rod ends are connected to the corresponding force-applying plates 216 by hinge. A guide rail 22 is fixedly installed on the top of the rotating block 214, and a slidable laser cutting head 23 is provided on the guide rail 22. A drive belt 241 is sleeved on the output end of the moving drive device 24. The drive belt 241 is clamped and fixed on both sides by clamping plates 242. The laser cutting head 23 is installed on the clamping plates 242. The moving drive device 24 drives the drive belt 241 to move, thereby realizing the movement of the laser cutting head 23 along the guide rail 22.

[0020] When a bevel is required, the two rotary drive devices 212 extend and retract respectively. For example, when the right rotary drive device 212 retracts and the left rotary drive device 212 extends, the force plate 216 drives the rotating block 214 to rotate clockwise within the slide groove 213, thereby causing the guide rail 22 fixed thereon to form an inclined angle. At this time, the moving drive device 24 is activated, and the drive belt 241 drives the clamping plate 242 and the laser cutting head 23 to move along the inclined guide rail 22. The laser beam performs a bevel cut on the steel pipe through the cutting groove 215. The width margin of the cutting groove 215 avoids interfering with the swing of the laser cutting head 23, and the width of the slide groove 213 is set to ensure the support stability of the rotating block 214 while allowing it to rotate freely.

[0021] The above embodiments are merely one preferred embodiment of the present utility model. Ordinary changes and substitutions made by those skilled in the art within the scope of the present utility model's technical solution are all included within the protection scope of the present utility model.

Claims

1. A multifunctional steel pipe laser cutting equipment, comprising a positioning device for positioning the steel pipe and a cutting device for cutting the steel pipe, wherein the cutting device comprises a guide rail, a laser cutting head disposed on the guide rail, and a moving drive device for driving the laser cutting head to move on the guide rail, characterized in that: The cutting device also includes a cutting frame, on which a rotating frame and a rotation drive device are provided. The guide rail is locked inside the rotating frame and the rotation drive device drives the guide rail to rotate as a whole.

2. The multi-functional steel tube laser cutting apparatus according to claim 1, characterized by: The rotating drive device is divided into two and is respectively located on both sides of the rotating frame. A rotating block is provided on the rotating frame. Each side of the rotating block is connected to a rotating drive device. The guide rail is fixed on the rotating block. When the rotating drive devices located on both sides of the rotating block rise and fall, they drive the rotating block to rotate.

3. The multi-functional steel tube laser cutting apparatus according to claim 2, characterized by: The rotating frame is provided with a sliding groove for the rotating block to be embedded in, and a cutting groove is provided at the center of the rotating block for the laser cutting head to pass through. The width of the cutting groove is greater than the width of the laser cutting head, and the width of the sliding groove is greater than the width of the cutting groove.

4. The multi-functional steel tube laser cutting apparatus according to claim 3, characterized by: Both sides of the rotating block are provided with force-applying plates extending outward from the slide groove. The rotation drive device is a telescopic cylinder, and the telescopic end of the rotation drive device is hinged to the force-applying plate.

5. The multi-functional steel tube laser cutting apparatus according to claim 1, characterized in that: The cutting device also includes a drive belt sleeved on the output end of the mobile drive device and clamping plates clamping and fixing the two sides of the drive belt. The drive belt is respectively set on both sides of the guide rail and wound around the output end of the mobile drive device. The laser cutting head is set on the clamping plates.

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