Inner side protection mechanism for H-shaped steel laser cutting

Abstract

The utility model discloses an H-shaped steel laser cutting inner side protection mechanism which comprises a baffle assembly used for blocking laser penetrating through a material during H-shaped steel cutting. The at least two connecting rods are rotationally arranged at the top of the baffle assembly; the X-direction sliding plate is rotationally arranged at the tops of the at least two connecting rods; the Y-direction sliding plate is slidably arranged at the top of the X-direction sliding plate through an X-direction guide rail pair; the driving device is used for driving the X-direction sliding plate to move in the X direction and driving the Y-direction sliding plate to move in the Y direction; the plate lifting device is arranged on the X-direction sliding plate, the driving end is rotationally connected with one connecting rod, and the plate lifting device is used for driving the baffle assembly to ascend and descend; and the Y-direction guide rail pair is arranged at the top of the Y-direction sliding plate. By means of the H-shaped steel inner side protection device, inner side protection during laser cutting of H-shaped steel of different specifications and lengths can be achieved.

Description

Technical Field

[0001] This application belongs to the field of laser cutting technology for structural steel, specifically relating to an inner protective mechanism for laser cutting H-beams. Background Technology

[0002] Currently, the market demands increasingly larger processing areas for H-beam laser cutting machines, and the thickness of H-beams is also increasing, leading to higher power requirements for the laser generators used in these machines. When cutting H-beams, the laser cutting head needs to be perpendicular to the outer side of the left flange to cut the left side of the shape, then perpendicular to the outer side of the right flange to cut the right side, and finally perpendicular to the upper surface of the web to cut the web shape. To improve the efficiency of laser cutting equipment, the output power during piercing and cutting is increased. However, when the high-energy laser penetrates the base material, it can irradiate the inner side of the opposite flange, causing damage and posing a safety hazard to the steel structure. Therefore, ensuring that the non-cutting surfaces of the H-beam are not damaged during high-power laser cutting is crucial. Traditional methods involve manually placing protective iron plates or fireproof cloths to prevent damage to the inner side of the H-beam. When using automated laser cutting equipment, manually placing protective iron plates or fireproof cloth can affect or even block the equipment's processing of the web plate, making it difficult to achieve automated operation. This increases the difficulty of protecting the inside of H-beams by the steel cutting machine. Utility Model Content

[0003] In view of the technical problems existing in the background art, this application provides an inner protection mechanism for laser cutting of H-beams, which can realize inner protection when laser cutting H-beams of different specifications and lengths.

[0004] The technical solution to the technical problem solved in this application is as follows:

[0005] This application discloses an inner protective mechanism for laser cutting of H-beams, comprising a baffle assembly, connecting rods, an X-axis sliding plate, a Y-axis sliding plate, a drive device, a lifting device, an X-axis guide rail pair, and a Y-axis guide rail pair. The baffle assembly is used to block the laser light from penetrating the material during H-beam cutting. There are at least two connecting rods, each rotatably mounted on top of the baffle assembly. The X-axis sliding plate is rotatably mounted on top of at least two of the connecting rods. The Y-axis sliding plate is slidably mounted on top of the X-axis sliding plate via the X-axis guide rail pair. The drive device is used to drive the X-axis sliding plate to move in the X-axis direction and to drive the Y-axis sliding plate to move in the Y-axis direction. The lifting device is mounted on the X-axis sliding plate, with its drive end rotatably connected to one of the connecting rods, for driving the baffle assembly to rise and fall. The Y-axis guide rail pair is mounted on top of the Y-axis sliding plate and is used to mount the entire inner protective mechanism onto the cutting beam of the cutting equipment.

[0006] Furthermore, the baffle assembly includes a rectangular baffle body, the top of which is provided with a fixed frame, and the bottom of at least two connecting rods are rotatably connected to the top of the fixed frame.

[0007] Furthermore, the baffle body is made of graphite plate.

[0008] Furthermore, the baffle body is symmetrically provided with side plate assemblies at both ends, and each side plate assembly includes two side baffles. The two side baffles are connected to the edge of the end of the baffle body at an included angle, so that the baffle body and the two side baffles at the same end together form a Y-shaped structure.

[0009] Furthermore, the side baffle is made of graphite plate.

[0010] Furthermore, the driving device includes an X-axis driving device and a Y-axis driving device; the X-axis driving device is one of a cylinder, a hydraulic cylinder, or an electric cylinder, and is fixedly mounted on the Y-axis slide plate. The front end of the driving rod is connected to the X-axis slide plate. When the driving rod extends or retracts, it drives the X-axis slide plate to move in the X-axis direction through the X-axis guide rail pair. The Y-axis driving device includes a servo motor fixedly mounted on the Y-axis slide plate. The output end of the servo motor is provided with a gear, which meshes with a rack arranged in the Y-axis direction. When the servo motor is running, it drives the gear to rotate on the rack through the output end, thereby driving the Y-axis slide plate to move in the Y-axis direction through the Y-axis guide rail pair.

[0011] Furthermore, a lubricating felt wheel is rotatably mounted on the Y-axis sliding plate, and the lubricating felt wheel contacts the rack.

[0012] Furthermore, the lifting device is one of a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder, and its body is rotatably mounted on the X-direction sliding plate, with the front end of the drive rod rotatably connected to the middle of one of the connecting rods.

[0013] Furthermore, the X-guide rail pair includes a plurality of X-guide rails disposed on the top of the X-direction slide plate, and a plurality of X-direction sliders are slidably disposed on the X-guide rails, the X-direction sliders being fixedly connected to the bottom of the Y-direction slide plate.

[0014] Furthermore, the Y-guide rail pair includes a plurality of Y-guide rails, and a plurality of Y-axis sliders are slidably disposed on the Y-guide rails, the Y-axis sliders being fixedly connected to the top of the Y-axis slide plate.

[0015] Compared to existing technologies, this application provides an inner protective mechanism for laser cutting of H-beams, featuring a novel, simple, and rational structural design. Utilizing the high tolerance of graphite plates to high-energy lasers, an inner protective mechanism is achieved during H-beam laser cutting via a baffle assembly in conjunction with X-axis and Y-axis drive devices and a lifting device. When a high-power laser cuts the flanges of an H-beam, the graphite plate is lowered to the inner side of the flange to be cut through the combined action of a servo motor, cylinder, and linkage mechanism, preventing laser-induced damage to the non-cutting surfaces of the H-beam and improving the overall yield rate of the H-beam. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this application;

[0017] Figure 2 This is a schematic diagram of the connection between the lateral lifting plate device and the connecting rod in this application;

[0018] Figure 3 This is the reset state of the inner protective mechanism in this application;

[0019] Figure 4 This describes the working status of the inner protective mechanism in this application;

[0020] In the diagram: 1. Baffle assembly; 11. Baffle body; 12. Side baffle; 13. Fixed frame; 2. Connecting rod; 3. X-axis sliding plate; 4. Y-axis sliding plate; 5. X-axis drive device; 6. Lifting device; 7. Y-axis drive device; 71. Servo motor; 72. Gear; 73. Rack; 74. Lubricating felt wheel; 8. Y-axis guide rail pair; 81. Y-axis guide rail; 82. Y-axis slider; 9. X-axis guide rail pair; 91. X-axis guide rail; 92. X-axis slider; 100. H-beam; 101. Cutting beam; 102. Fixed bracket. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those of ordinary skill in the art to which this disclosure pertains. The terms "upper," "lower," "left," "right," "front," "back," "inside," "outside," "X-direction," and "Y-direction" used in the specification and claims of this patent application are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship also changes accordingly. Any aspects not detailed in this application are well-known technologies to those skilled in the art.

[0022] like Figures 1-4 As shown, this application provides an inner protective mechanism for laser cutting of H-beams, which includes a baffle assembly 1, a connecting rod 2, an X-axis sliding plate 3, a Y-axis sliding plate 4, a drive device, a lifting device 6, an X-axis guide rail pair 9, and a Y-axis guide rail pair 8. Wherein:

[0023] The baffle assembly 1 is made of a material with high resistance to lasers, such as graphite plate, and is used to block the high-energy laser that penetrates the H-beam during H-beam cutting.

[0024] Two connecting rods 2 are spaced apart and are rotatably connected to the top of the baffle assembly 1.

[0025] The X-axis sliding plate 3 is rotatably mounted on the top of the two connecting rods 2, and the X-axis sliding plate 3 is preferably made of a rectangular plate.

[0026] Y-axis slide plate 4 is slidably mounted on top of X-axis slide plate 3 via X-axis guide rail pair 9 for mutual sliding between X-axis slide plate 3 and Y-axis slide plate 4. X-axis guide rail pair 9 includes several X-axis guide rails 91 mounted on top of X-axis slide plate 3. Several X-axis sliders 92 are slidably mounted on X-axis guide rails 91. X-axis sliders 92 are fixedly connected to the bottom of Y-axis slide plate 4.

[0027] To facilitate the X-axis movement of the X-axis skateboard 3 and the Y-axis movement of the Y-axis skateboard, the drive device includes an X-axis drive device 5 and a Y-axis drive device 7.

[0028] The X-axis drive device 5 is fixedly mounted on the bottom of the Y-axis slide plate 4, parallel to the X-axis slide plate 3. Its drive end is connected to the front end of the X-axis slide plate 3. When the X-axis drive device 5 extends or retracts, its drive end can drive the X-axis slide plate 3 to move in the X direction via the X-axis guide rail pair 9. In a preferred embodiment, the X-axis drive device 5 can be one of a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder, with the front end of its drive rod connected to the front end of the X-axis slide plate 3.

[0029] The Y-axis drive device 7 is mounted on the Y-axis slide plate 4 and is used to drive the Y-axis slide plate 4 to move in the Y direction via the Y-axis guide rail pair 8. The Y-axis drive device 7 includes a servo motor 71 fixedly mounted on the Y-axis slide plate 4. The output end of the servo motor 71 is equipped with a gear 72 via a reducer. The gear 72 meshes with a rack 73 arranged in the Y direction. The rack 73 is fixed on the cutting crossbeam. When the servo motor 71 drives the gear 72 to rotate, it can move on the rack 73, thereby driving the Y-axis slide plate 4 to move in the Y direction via the Y-axis guide rail pair 8.

[0030] To achieve lubrication between gear 72 and rack 73 and facilitate their coordinated movement, in a preferred embodiment, a lubricating felt wheel 74 is rotatably mounted on the Y-axis slide plate 4. The lubricating felt wheel 74 contacts the rack 73. By applying lubricating oil to the lubricating felt wheel 74, both gear 72 and rack 73 can be covered with lubricating oil, thereby improving the stability and smoothness of equipment operation.

[0031] In this embodiment, the X-axis sliding plate 3, two connecting rods, and the baffle assembly 1 constitute a linkage mechanism. To achieve the lifting and lowering of the baffle assembly 1 on this linkage mechanism, a lifting device 6 is disposed on the X-axis sliding plate 3. Its driving end is rotatably connected to one of the connecting rods 2, preferably connected to the middle of the connecting rod 2. When the driving end of the lifting device 6 applies a pushing or pulling force to the connecting rod 2, it drives the two connecting rods 2 to rotate synchronously, thereby realizing the raising or lowering of the baffle assembly 1. As a preferred embodiment, the lifting device 6 can be one of a cylinder, a hydraulic cylinder, or an electric cylinder. Its body is rotatably connected to the X-axis sliding plate 3, and the front end of the driving rod is rotatably connected to the middle of one of the connecting rods 2.

[0032] Y-guide rail 8 is located on the top of Y-axis slide plate 4 and is used to install and connect the entire inner protective mechanism to the lower part of the cutting beam of the laser cutting equipment. It includes several Y-guide rails 81, preferably two, which are connected to the cutting beam. Several Y-axis sliders 82 are slidably arranged on the Y-guide rails 81. The Y-axis sliders 82 are fixedly connected to the top of the Y-axis slide plate 4 and are used for the movement of the Y-axis slide plate 4 in the Y direction.

[0033] In application, after the H-beam 100 is placed on the fixed bracket 102, the inner protective mechanism is moved to the inner side of the wing plate to be cut by the Y-axis drive device 7. The baffle assembly 1 is lowered to the inner side of the wing plate by the lifting device 6 pushing the connecting rod 2. Then, the baffle assembly 1 is driven to the center position of the cutting head of the cutting equipment by the X-axis drive device. When the high-power laser cuts the wing plate, the laser energy that penetrates the material will be blocked by the baffle assembly 1, avoiding damage to the inner side of the opposite wing plate. When cutting the other wing plate, the protective mechanism switches to the other side, thus achieving protection of the inner side of the H-beam. If the baffle assembly 1 blocks the laser cutting head during the movement of the laser cutting head to the wing plate to be cut, the X-axis drive device 5 can drive the X-axis sliding plate 3 to move the baffle assembly 1 to avoid it.

[0034] In a preferred embodiment, the baffle assembly 1 includes a rectangular baffle body 11, preferably made of graphite plate. A fixing frame 13 is provided on the top of the baffle body 11, and the bottom of two connecting rods 2 are rotatably connected to the top of the fixing frame 13 for easy installation and disassembly. In a further preferred embodiment, side plate assemblies are symmetrically arranged at both ends of the baffle body 11. Each side plate assembly includes two side baffles 12, preferably made of graphite plate. The two side baffles 12 are connected to the end edges of the baffle body 11 at an included angle, so that the baffle body 11 and the two side baffles 12 at the same end together form a Y-shaped structure, which can provide all-round protection for the inside of the H-beam during cutting.

[0035] Furthermore, since the positions of the two flanges in the machine tool coordinate system differ when cutting H-beams of different specifications and lengths, the bottom of the H-beam uses a fixed bracket to support the web and also act as a shield for the lower space. After the baffle assembly is lowered, sufficient safety height is reserved between its bottom and the web, requiring only the lifting device to perform a fixing action. During cutting, the front steel cutting machine system scans the H-beam, calculates the coordinates of the two flanges, and then controls the Y-axis drive device to move the protective mechanism to the inside of the flange to be cut. The lifting device pushes the connecting rod to lower the baffle assembly to the inside of the flange. Moreover, since this protective mechanism is installed under the cutting crossbeam, the cutting head is always within the protection range of the lowered baffle assembly, thus achieving inner protection for H-beams of different specifications and lengths.

Claims

1. A laser cutting inner side protection mechanism for H-shaped steel, characterized in that, include: baffle assembly (1); At least two connecting rods (2) are rotatably mounted on the top of the baffle assembly (1); X-axis sliding plate (3), rotatably mounted on top of at least two of the connecting rods (2); The Y-axis slide plate (4) is slidably mounted on the top of the X-axis slide plate (3) via the X-axis guide rail pair (9); A driving device for driving the X-axis sliding plate (3) to move in the X direction and driving the Y-axis sliding plate (4) to move in the Y direction; The lifting device (6) is set on the X-direction sliding plate (3), and the driving end is rotatably connected to one of the connecting rods (2) to drive the baffle assembly (1) to rise and fall; Y-guide rail pair (8) is disposed on top of the Y-direction slide plate (4).

2. The inner side protection mechanism for laser cutting of H-shaped steel according to claim 1, characterized in that, The baffle assembly (1) includes a rectangular baffle body (11), and a fixed frame (13) is provided on the top of the baffle body (11). At least two of the connecting rods (2) are rotatably connected to the top of the fixed frame (13) at their bottoms.

3. The inner side protection mechanism of a H-shaped steel laser cutting according to claim 2, characterized in that, The baffle body (11) is made of graphite plate.

4. The inner side protection mechanism of a H-shaped steel laser cutting according to claim 2, characterized in that, The baffle body (11) has symmetrically arranged side plate groups at both ends. Each side plate group includes two side baffles (12). The two side baffles (12) are connected to the edge of the end of the baffle body (11) at an included angle, so that the baffle body (11) and the two side baffles (12) at the same end together form a Y-shaped structure.

5. The inner side protection mechanism of a H-shaped steel laser cutting according to claim 4, wherein, The side baffle (12) is made of graphite plate.

6. The inner side protection mechanism for laser cutting of H-shaped steel according to claim 1, wherein The driving device includes an X-axis driving device (5) and a Y-axis driving device (7); the X-axis driving device (5) is one of a cylinder, a hydraulic cylinder, or an electric cylinder, and is fixedly mounted on the Y-axis slide plate (4), with the front end of the driving rod connected to the X-axis slide plate (3); the Y-axis driving device (7) includes a servo motor (71) fixedly mounted on the Y-axis slide plate (4), and the output end of the servo motor (71) is provided with a gear (72), and the gear (72) meshes with a rack (73) arranged in the Y direction.

7. The inner side protection mechanism of a H-shaped steel laser cutting according to claim 6, wherein, A lubricating felt wheel (74) is rotatably mounted on the Y-axis sliding plate (4), and the lubricating felt wheel (74) contacts the rack (73).

8. The inner side protection mechanism for laser cutting of H-shaped steel according to claim 1, wherein The lifting device (6) is one of a cylinder, a hydraulic cylinder, or an electric cylinder. Its body is rotatably mounted on the X-direction sliding plate (3), and the front end of the drive rod is rotatably connected to the middle of one of the connecting rods (2).

9. The inner side protection mechanism for laser cutting of H-shaped steel according to claim 1, wherein, The X-guide rail pair (9) includes several X-guide rails (91) disposed on the top of the X-guide slide (3), and several X-sliders (92) are slidably disposed on the X-guide rails (91). The X-sliders (92) are fixedly connected to the bottom of the Y-guide slide (4).

10. The inner side protection mechanism for laser cutting of H-shaped steel according to claim 1, wherein, The Y-guide rail pair (8) includes several Y-guide rails (81), and several Y-axis sliders (82) are slidably arranged on the Y-guide rails (81). The Y-axis sliders (82) are fixedly connected to the top of the Y-axis slide plate (4).

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