Anti-collision device for laser cutting machine

Abstract

The utility model discloses a kind of anti-collision devices of laser cutting machine, including laser cutting machine body, a pair of movable cutting head mounting rack is equipped on laser cutting machine body, buffer device is installed in cutting head mounting rack left and right sides, buffer device includes the concave groove being installed in cutting head mounting rack one side, gear is rotatably installed in concave groove inner wall, frame is slidably connected in the top and bottom of concave groove inner side, first rack gear is fixedly installed in the top of the bottom of the top of the bottom of the top of the bottom of the top of the bottom of the top of the bottom of the top of the bottom of the top of the bottom of the top of the bottom of the top of the bottom of the top of the bottom of the top of the bottom of the top of the bottom of the top of the bottom of the top of the bottom of the top of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the bottom of the top of the bottom of the bottom of the bottom of the bottom of

Description

Technical Field

[0001] This utility model relates to the field of dual-cutting-head laser cutting technology, and in particular to an anti-collision device for a laser cutting machine. Background Technology

[0002] Dual-head laser cutting machines significantly improve cutting efficiency by enabling parallel processing of large-format materials through the synchronous or asynchronous lateral movement of two cutting heads (e.g., along the X-axis), making them widely used in batch processing scenarios such as sheet metal and pipe manufacturing. However, the lateral movement of the dual cutting heads requires strict control of their relative positions. Due to programming errors, drive system synchronization deviations, sensor alignment failures, or accidental operation, the two cutting heads may approach each other or even collide during lateral movement. The risk of collision increases significantly, especially when the two cutting heads move in opposite directions along the same lateral trajectory or at different speeds in the same direction.

[0003] Existing anti-collision measures for dual cutting heads have significant limitations: some devices rely on electronic synchronous control systems to calibrate the position in real time, but during high-frequency lateral movement, signal delays can lead to lag in response, and electronic components are not stable enough in the high-temperature and dusty environment of laser cutting; some mechanical anti-collision structures only have simple buffers (such as rubber pads) on one side of the cutting head, but the collision of dual cutting heads is a bidirectional relative force, and single-sided buffering cannot absorb the impact force evenly, which may still cause the cutting head to deviate, the nozzle to be damaged, or the mounting bracket to be deformed, affecting the processing accuracy; in addition, some anti-collision devices are not adapted to the lateral movement trajectory of dual cutting heads, and the buffering direction does not match the direction of the collision force, which can easily lead to jamming or buffer failure. Utility Model Content

[0004] To address the problems mentioned above, this utility model provides an anti-collision device for a laser cutting machine, which effectively solves the aforementioned problems.

[0005] This utility model adopts the following technical solution: an anti-collision device for a laser cutting machine, comprising a laser cutting machine body, a pair of movable cutting head mounting frames on the laser cutting machine body, buffer devices installed on both the left and right sides of the cutting head mounting frames, the buffer devices including a concave groove installed on one side of the cutting head mounting frame, a gear rotatably installed on the inner sidewall of the concave groove, a frame slidably connected to the top and bottom of the inner side of the concave groove, a first rack fixedly installed on the top of the lower horizontal section of the frame, a slidably connected to the bottom of the upper horizontal section of the frame and the bottom of the inner side of the concave groove, a second rack fixedly installed on the bottom of the upper horizontal section of the slid, a spring installed between the outer sidewall of the frame and the inner sidewall of the slid, a support rod installed on the outer side of the frame, and a buffer plate connected between the two support rods.

[0006] Furthermore, spring fixing brackets are installed on both the outer side wall of the frame and the inner side wall of the lobed frame, and the two ends of the spring are respectively fixedly connected to the spring fixing brackets.

[0007] Furthermore, a first sliding groove is provided at the top and bottom of the inner side of the concave groove, and a second sliding groove is provided at the bottom of the upper transverse section of the frame.

[0008] Furthermore, the gear meshes with both the first and second racks simultaneously. When the frame moves laterally, the first rack drives the gear to rotate around its own axis, and the gear drives the frame to slide laterally in the opposite direction to the frame via the second rack.

[0009] Furthermore, the buffer plate is made of an elastic material, specifically a silicone plate or a nitrile rubber plate.

[0010] The advantages of this invention are as follows: Both sides of the two cutting head mounting brackets are equipped with buffer devices. When the two cutting heads move laterally and approach each other, the buffer plates of the buffer devices on both sides can simultaneously contact and form a bidirectional buffer. The symmetrical structure evenly absorbs the relative impact force of the two cutting heads, preventing cutting head displacement caused by unilateral force. Through the reverse lateral sliding of the frame and the L-shaped frame, the meshing transmission of gears and racks, and the energy storage of spring compression, the impact force generated by the lateral relative movement of the two cutting heads can be efficiently absorbed, significantly reducing the risk of damage to the cutting heads, nozzles, and mounting brackets from collisions. It eliminates the need for an electronic control system, achieving collision protection through a mechanical structure. This avoids interference from high temperatures and dust in the laser cutting environment on electronic components. The structure is simple, maintenance is convenient, and the cost is lower than that of electronic synchronous collision protection devices. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the buffer device structure of this utility model; Figure 3 This is a schematic diagram of the buffer device structure of this utility model.

[0012] In the figure, 1-laser cutting machine body, 2-cutting head mounting bracket, 3-buffer device, 301-concave groove, 302-gear, 303-frame, 304-first rack, 305-L-shaped frame, 306-second rack, 307-support rod, 308-spring, 309-spring fixing bracket, 310-first slide groove, 311-second slide groove, 4-buffer plate. Detailed Implementation

[0013] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0014] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0015] See Figure 1-3 As shown, an anti-collision device for a laser cutting machine includes a laser cutting machine body 1. The laser cutting machine body 1 is provided with a pair of movable cutting head mounting brackets 2. Buffer devices 3 are installed on both the left and right sides of the cutting head mounting brackets 2. The buffer device 3 includes a concave groove 301 installed on one side of the cutting head mounting bracket 2. A gear 302 is rotatably installed on the inner wall of the concave groove 301. A frame 303 is slidably connected to the top and bottom of the inner side of the concave groove 301. A first rack 304 is fixedly installed on the top of the lower horizontal section of the frame 303. A slidable frame 305 is slidably connected to the bottom of the upper horizontal section of the frame 303 and the bottom of the inner side of the concave groove 301. A second rack 306 is fixedly installed on the bottom of the upper horizontal section of the slidable frame 305. A spring 308 is installed between the outer wall of the frame 303 and the inner wall of the slidable frame 305. A support rod 307 is installed on the outer side of the frame 303. A buffer plate 4 is connected between the two support rods 307.

[0016] Both the outer side wall of the frame 303 and the inner side wall of the frame 305 are equipped with spring fixing brackets 309. The two ends of the spring 308 are fixedly connected to the spring fixing brackets 309 respectively. The spring fixing brackets 309 provide precise positioning and fixing points for the spring 308, preventing the spring 308 from shifting, tilting or falling off due to lateral force during compression or reset, and ensuring that the spring 308 always transmits elastic force in the preset direction.

[0017] The concave groove 301 has a first sliding groove 310 at the top and bottom of its inner side, and the frame frame 303 has a second sliding groove 311 at the bottom of its upper transverse section. The first sliding groove 310 provides a guide path for the frame frame 303 to slide laterally along the concave groove 301, and the second sliding groove 311 provides a guide path for the frame frame 305 to slide laterally along the frame frame 303. This ensures that the two can only move in the direction of the force of the collision of the two cutting heads, avoiding structural jamming caused by the offset or torsion of the transverse force, and ensuring a smooth buffering process.

[0018] Gear 302 meshes with both the first rack 304 and the second rack 306. When the frame 303 moves laterally, the first rack 304 drives gear 302 to rotate around its own axis. Gear 302 drives frame 305 to slide laterally in the opposite direction to frame 303 via the second rack 306. Through the meshing of the gear and rack, the lateral movement of frame 303 can be synchronously converted into the opposite lateral movement of frame 305, ensuring that the two movements are strictly opposite.

[0019] The buffer plate 4 is made of elastic material, specifically silicone or nitrile rubber. The elastic material can quickly absorb part of the impact force through its own deformation in the early stage of the collision between the two cutting heads, reducing the force load transmitted to the subsequent mechanical structure and reducing the stress on the overall structure.

[0020] Working principle: When the two cutting heads move laterally relative to each other along their respective mounting frames 2 and approach each other, if the relative position deviation causes the distance to be too small, the buffer plates 4 on the adjacent sides of the two cutting head mounting frames 2 will first contact and collide, and the collision direction is consistent with the lateral movement direction; the buffer plates 4 undergo elastic deformation due to the lateral impact force of the other, initially absorbing the collision energy generated by the relative movement of the two cutting heads, forming a first-level buffer. The deformation force of the buffer plate 4 is transmitted to the respective frame frame 303 through the support rod 307, pushing the frame frame 303 on the two cutting head mounting frames 2 to slide laterally towards their respective cutting head mounting frames 2 along the first sliding groove 310 at the top and bottom of the inner side of its concave groove 301. When the frame frame 303 slides laterally, the first rack 304 of its lower transverse section moves synchronously, driving the gear 302 meshing with it to rotate around the rotation axis of the inner side wall of the concave groove 301. When the gear 302 rotates, it drives the frame 305 to slide laterally away from the cutting head mounting frame 2 along the second sliding groove 311 at the bottom of the upper transverse section of the frame frame 303 through the second rack 306 meshing with it. That is, it is opposite to the sliding direction of the frame frame 303, forming a reverse force transmission. The reverse lateral sliding of the frame 303 and the L-shaped frame 305 compresses the spring 308 between them, increasing the elastic potential energy of the spring 308. This further absorbs the energy generated by the relative collision of the two cutting heads, forming a secondary buffer and significantly reducing the impact force transmitted to the two cutting head mounting brackets 2 and the cutting heads. When the two cutting heads move in the opposite direction or the collision force disappears, the spring 308 releases its elastic potential energy, pushing the frame 303 and the L-shaped frame 305 to slide back to their original position in the reverse lateral direction. The gear 302 returns to its initial position with the rack and pinion, and the buffer plate 4 also returns to its original shape due to its own elasticity. The device returns to the anti-collision state, waiting for the next collision protection during the lateral relative movement of the two cutting heads.

[0021] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0022] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A collision avoidance device for a laser cutting machine, comprising a laser cutting machine body (1), wherein the laser cutting machine body (1) is provided with a pair of movable cutting head mounting brackets (2), characterized in that: The cutting head mounting bracket (2) is equipped with buffer devices (3) on both the left and right sides. The buffer device (3) includes a concave groove (301) installed on one side of the cutting head mounting bracket (2). A gear (302) is rotatably installed on the inner wall of the concave groove (301). A frame (303) is slidably connected to the top and bottom of the inner side of the concave groove (301). A first rack (304) is fixedly installed on the top of the horizontal section below the frame (303). The bottom of the upper horizontal section of the frame (303) and the bottom of the inner side of the concave groove (301) are slidably connected to a rib-shaped frame (305). A second rack (306) is fixedly installed at the bottom of the upper horizontal section of the rib-shaped frame (305). A spring (308) is installed between the outer wall of the frame (303) and the inner wall of the rib-shaped frame (305). A support rod (307) is installed on the outer side of the frame (303). A buffer plate (4) is connected between the two support rods (307).

2. The anti-collision device for a laser cutting machine according to claim 1, characterized in that: Both the outer side wall of the frame (303) and the inner side wall of the frame (305) are equipped with spring fixing brackets (309), and the two ends of the spring (308) are fixedly connected to the spring fixing brackets (309).

3. The anti-collision device for a laser cutting machine according to claim 2, characterized in that: The concave groove (301) has a first sliding groove (310) at the top and bottom of its inner side, and the frame (303) has a second sliding groove (311) at the bottom of its upper horizontal section.

4. The anti-collision device for a laser cutting machine according to claim 3, characterized in that: The gear (302) meshes with the first rack (304) and the second rack (306) simultaneously. When the frame (303) moves laterally, the first rack (304) drives the gear (302) to rotate around its own axis. The gear (302) drives the frame (305) to slide laterally in the opposite direction to the frame (303) through the second rack (306).

5. The anti-collision device for a laser cutting machine according to claim 4, characterized in that: The buffer plate (4) is made of an elastic material, specifically a silicone plate or a nitrile rubber plate.

Images