A laser cutting device for stainless steel letters

Abstract

The present application relates to laser cutting device technical field, specifically to a kind of stainless steel word laser cutting device, including cutting table and laser cutting head, cutting table is equipped with translation drive assembly, translation drive assembly is equipped with Z-axis drive mechanism;Laser cutting head is installed on Z-axis drive mechanism by anti-collision buffer mechanism, and anti-collision buffer mechanism includes in-and-out anti-collision mechanism and transverse anti-collision mechanism.In the present application, anti-collision buffer mechanism is connected in series between Z-axis drive mechanism and laser cutting head in the form of flexible adapter, without additional shielding structure is added in the periphery of laser cutting head, does not interfere with fine cutting path, adapts stainless steel font processing;At the same time, anti-collision buffer mechanism can always maintain the connection state of laser cutting head and drive end, can reduce secondary knock, and can be automatically reset after collision, without manual calibration, while having multi-angle anti-collision buffer effect, can adapt to the processing state of high-speed reversing frequently in cutting process.

Description

Technical Field

[0001] This invention relates to the field of laser cutting equipment technology, specifically to a laser cutting device for stainless steel characters. Background Technology

[0002] Stainless steel signage lettering is typically cut from 0.3-2mm thick stainless steel sheets. The lettering strokes are delicate, with numerous hollow structures, and the cutting paths are dense and frequently change direction at high speeds. During processing, the thin stainless steel sheet is prone to warping and deformation due to the heat from the laser. Furthermore, the excess material inside the hollow cavities is easily displaced and lifted, which can easily cause the laser cutting head to scrape and collide with the sheet or excess material during movement. This can damage the optical components on the laser cutting head, and in severe cases, may even damage or break the ceramic ring at the front end of the laser cutting head.

[0003] Currently, common anti-collision designs for laser cutting heads mainly fall into two categories: First, a protective bracket is installed around the laser cutting head. The bracket triggers a shutdown protection mechanism by touching an obstacle in advance. However, this structure can only passively trigger a shutdown and cannot offset the impact force generated by the collision. Moreover, the bracket itself has a certain outer dimension, which can easily interfere with the fine cutting of narrow strokes and densely hollowed areas. Second, a magnetic mounting base is used to connect the laser cutting head. Although it can adapt to collision effects at different angles, the magnetic connection structure is prone to displacement or complete separation from the mounting base after a collision. It cannot automatically reset after the obstacle is removed and requires manual recalibration, which is time-consuming and labor-intensive. Furthermore, once the laser cutting head completely separates from the mounting base during a collision, it is prone to secondary impacts.

[0004] Therefore, this application proposes a laser cutting device for stainless steel letters. Summary of the Invention

[0005] The purpose of this invention is to provide a laser cutting device for stainless steel letters, so as to solve the problem mentioned in the background art that the existing anti-collision structure for laser cutting of stainless steel letters has poor protective effect.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A laser cutting device for stainless steel lettering includes a cutting table and a laser cutting head. A translation drive assembly is mounted on the cutting table, and a Z-axis drive mechanism is mounted on the translation drive assembly. The laser cutting head is mounted on the Z-axis drive mechanism via an anti-collision buffer mechanism, and the Z-axis drive mechanism drives the laser cutting head to adjust its vertical height at the top of the cutting table.

[0008] The anti-collision buffer mechanism includes a forward / backward anti-collision mechanism and a lateral anti-collision mechanism. The forward / backward anti-collision mechanism includes a rotor support and assembly mechanisms rotatably mounted at both ends of the rotor support. A first buffer reset assembly is installed between the two assembly mechanisms and the rotor support. The lateral anti-collision mechanism includes a rotor mechanism and a positioning end cover. The front end of the rotor mechanism is fixedly mounted on the outside of the laser cutting head, and the tail end of the rotor mechanism is rotatably connected to the positioning end cover. A second buffer reset assembly is provided inside the rotor mechanism. The rotor support is fixedly mounted on the tail end of the positioning end cover, and the assembly mechanisms at both ends of the rotor support are fixedly mounted on the Z-axis drive mechanism.

[0009] Furthermore, the translation drive assembly includes an X-axis linear drive mechanism and a Y-axis linear drive mechanism. Both the Y-axis linear drive mechanism and the X-axis linear drive mechanism are ball screw linear drive mechanisms. There are two sets of X-axis linear drive mechanisms, which are respectively installed on both sides of the cutting table. The two sets of X-axis linear drive mechanisms are parallel to each other and are controlled by the same controller for synchronous drive. The Y-axis linear drive mechanism is installed on top of the two sets of X-axis linear drive mechanisms, and the two sets of X-axis linear drive mechanisms drive the Y-axis linear drive mechanism to translate along the X-axis on the cutting table.

[0010] Furthermore, the rotor support in the forward and backward anti-collision mechanism includes a connecting arm and a hinge seat. The connecting arm is a flat plate-like structure and is fixedly installed at the tail end of the positioning end cover. There are two hinge seats, both of which are cylindrical structures. Both hinge seats are integrally formed at both ends of the connecting arm and are set at a perpendicular angle to the connecting arm. The two hinge seats are located on both sides of the transverse anti-collision mechanism and are symmetrically arranged with the central axis of the transverse anti-collision mechanism as the center. The end of the two hinge seats closer to the transverse anti-collision mechanism is a closed end, and the other end of the two hinge seats is an open end, so as to facilitate the assembly mechanism to be installed into the inner side of the hinge seat from the outside. The inner side of the two hinge seats forms a central annular groove and multiple sets of buffer positioning grooves through integrally formed inner support ribs. The central annular groove is coaxial with the hinge seat. The multiple sets of buffer positioning grooves are all designed with arcs and are coaxial with the central annular groove. The multiple sets of buffer positioning grooves are distributed circumferentially on the outside of the central annular groove, and the center position of the bottom of each buffer positioning groove is integrally formed with a first positioning groove.

[0011] Furthermore, the assembly mechanism in the forward and backward anti-collision mechanism includes a first connecting column and an anti-detachment ring. The front end of the first connecting column is rotatably mounted in the central ring groove via a first precision bearing. The tail end of the first connecting column is integrally formed with a coaxially arranged positioning plate and mounting plate. The positioning plate and mounting plate are parallel to each other and have an assembly gap. The positioning plate slides against the end face of the inner support rib. The side of the positioning plate that is in contact with the inner support rib has an integrally formed first positioning post that slides with the buffer positioning groove at the center position of each buffer positioning groove. The end of the first positioning post slides against the bottom of the buffer positioning groove. Each first positioning post has an assembly hole with two through ends at its center, and the assembly hole corresponds to the position of the first positioning groove. The anti-detachment ring is composed of two semi-circular rings assembled together. The anti-detachment ring is clamped in the assembly gap between the positioning plate and the mounting plate. The outer edge of the anti-detachment ring is fixedly installed to the outer edge of the hinge seat by screws. The side of the anti-detachment ring that is in contact with the positioning plate has a second positioning groove at the position of the first positioning groove.

[0012] Furthermore, the first buffer reset component in the forward and backward anti-collision mechanism includes a first spring and a ball positioning component. There are several first springs, each of which is an arc spring of the same specification. Every two first springs form a group and are installed in corresponding buffer positioning grooves. The two first springs in the same group are located on both sides of the first positioning post that slides in the buffer positioning groove. There are several groups of ball positioning components and they are respectively assembled in the assembly hole at the center of each first positioning post. Each group of ball positioning components includes a first positioning steel ball and a second positioning steel ball. The first positioning steel ball and the second positioning steel ball are the same size. A first permanent magnet and a second permanent magnet are also provided between the first positioning steel ball and the second positioning steel ball. The magnetic poles of the first permanent magnet and the second permanent magnet are the same at their opposite ends. Under normal conditions, the connecting arm in the rotor support always maintains its initial side-standing state under the constraint of the first buffer reset component and the assembly mechanism.

[0013] Furthermore, both the first positioning groove and the second positioning groove are spherical grooves, and the groove depth of the first positioning groove and the second positioning groove is one-third of the diameter of the first positioning steel ball and the second positioning steel ball. The groove edges of the first positioning groove and the second positioning groove are both designed with rounded transitions.

[0014] Furthermore, except for the first buffer reset component, the rest of the structure in the advance and retreat anti-collision mechanism is integrally molded from high-strength modified plastic.

[0015] Furthermore, the Z-axis drive mechanism includes a vertical cylinder and a Z-axis guide bracket. The cylinder body of the vertical cylinder is vertically fixed on the sliding base of the Y-axis linear drive mechanism, and the vertical cylinder is driven by the Y-axis linear drive mechanism to move horizontally along the Y-axis direction on the top of the cutting table. The Z-axis guide bracket is vertically fixed on the front side of the cylinder body of the vertical cylinder.

[0016] Furthermore, the Z-axis guide bracket includes a guide plate, a U-shaped seat, and a laser rangefinder. The front of the guide plate has a guide rail groove along the length of the Z-axis guide bracket. An upper positioning plate and a lower positioning plate are respectively installed at the top and bottom of the Z-axis guide bracket. The U-shaped seat is horizontally slidably installed in the guide rail groove, allowing the U-shaped seat to move vertically along the direction of the guide rail groove. The inner sides of both ends of the front of the U-shaped seat are fixedly installed on the outer side of the mounting plate in the forward and backward anti-collision mechanism by bolts. A connecting rod is vertically installed on the U-shaped seat. The top end of the connecting rod slides through the upper positioning plate and is fixedly connected to the telescopic end of the vertical cylinder. The laser rangefinder is vertically installed on the side of the U-shaped seat.

[0017] Furthermore, in order to detect the attitude change of the laser cutting head when a collision occurs in a timely manner and to provide fault signals to the control terminal of the laser cutting equipment, a dual-axis optical attitude sensor that can monitor the changes in the X-axis and Y-axis orientation angles of the laser cutting head in real time can be installed at the middle position of the top of the U-shaped base.

[0018] Furthermore, the rotor mechanism in the lateral anti-collision mechanism includes a mounting base and a buffer tile. The back of the mounting base is attached to the surface of the laser cutting head and fixed by bolts. A first mounting post is integrally formed at the center of the front of the mounting base. A second mounting post is integrally formed on the coaxial end of the first mounting post away from the mounting base. A second connecting post is integrally formed on the coaxial end of the second mounting post away from the first mounting post. Several arc-shaped second buffer grooves are spaced apart circumferentially in the middle of the first mounting post. All second buffer grooves are coaxial with the first mounting post. A first lever is integrally formed on the outer side of the first mounting post corresponding to one end of each second buffer groove. Multiple first levers are arranged at equal intervals around the circumference on the outer side of the first mounting post. The outer diameter of the second mounting post is smaller than the outer diameter of the first mounting post, so that an L-shaped annular first buffer groove is formed between the outer side of the second mounting post and the end of the first mounting post. The depth of the first buffer groove and the second buffer groove are the same.

[0019] Furthermore, the number of buffer tiles is the same as the number of second buffer grooves, and each buffer tile is an arc structure. Multiple buffer tiles are fastened together on the outside of the first mounting post to form a ring-shaped buffer assembly coaxial with the first mounting post. Each buffer tile corresponds to a second buffer groove, and adjacent buffer tiles are fixedly connected by fixing bolts. A fourth buffer groove and a third buffer groove are respectively formed circumferentially on the inner side of each buffer tile corresponding to the positions of the first and second buffer grooves. The two ends of the third buffer groove are closed. The third buffer groove on the inner side of each buffer tile fastens together with the second buffer groove at the corresponding position on the outside of the first mounting post to form a... Each buffer tile has an arc-shaped buffer cavity. The first lever at the end of the second buffer groove is slidably engaged in the third buffer groove. The end of the third buffer groove on the inner side of each buffer tile away from the first lever is integrally formed with a second lever, which is slidably engaged in the corresponding second buffer groove. The end of the fourth buffer groove on the inner side of the buffer tile near the second lever is integrally formed with a third lever. A fitting gap for installing a positioning end cap is reserved between the side of the third lever near the end of the buffer tile and the inner wall of the fourth buffer groove. The third lever is slidably engaged in the first buffer groove. The end of the fourth buffer groove on the inner side of the buffer tile away from the third lever is an open design.

[0020] Furthermore, the positioning end cap of the lateral anti-collision mechanism has a mounting groove at the center position of the end away from the connecting arm. The second connecting column is rotatably engaged with the mounting groove on the positioning end cap through a second precision bearing. The edge of the positioning end cap is slidably engaged with the inner side of the end of the annular buffer kit composed of multiple buffer tiles. On the side of the positioning end cap near the first buffer groove, a second positioning post is integrally formed for each buffer tile position. The radially inner side of the second positioning post is slidably engaged with the inner side of the first buffer groove, and the radially outer side of the second positioning post is slidably engaged with the inner side of the open end of the fourth buffer groove in the corresponding buffer tile.

[0021] Furthermore, the second buffer reset component in the lateral anti-collision mechanism includes a second spring and a third spring. There are several second springs, which are respectively installed inside the corresponding buffer cavities. The two ends of the second springs abut against the first and second levers at the two ends of the corresponding buffer cavities. There are several third springs, which are respectively installed in the fourth buffer grooves inside the corresponding buffer tiles. The two ends of the third springs abut against the third levers and second positioning posts at the two ends of the corresponding fourth buffer grooves. Both the second springs and the third springs are arc-shaped springs of the same specifications.

[0022] Furthermore, under normal conditions, the laser cutting head always maintains its initial vertical position under the constraints of the second buffer reset assembly, rotor mechanism, and positioning end cap.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] This invention addresses the shortcomings of existing laser cutting head protection solutions by setting an anti-collision buffer mechanism between the Z-axis drive mechanism and the laser cutting head. Compared to the implementation scheme of adding an outer protective bracket, this anti-collision buffer mechanism is connected in series between the Z-axis drive mechanism and the laser cutting head in a flexible transition form. It eliminates the need for additional shielding structures around the laser cutting head and does not interfere with the fine cutting path of delicate strokes and densely hollowed areas. It is more suitable for the processing needs of stainless steel lettering. When the laser cutting head accidentally touches a warped plate or warped material, the anti-collision buffer mechanism can absorb the impact kinetic energy generated by the collision by compressing the internal buffer reset component through the relative movement of its own structure. This provides buffer protection for the optical components and front ceramic ring of the laser cutting head, reducing the risk of damage to the laser cutting head caused by rigid impacts.

[0025] Compared to the protection solution of magnetic mounting base, the anti-collision buffer mechanism proposed in this application can always maintain the connection between the laser cutting head and the drive end, and will not completely detach during the collision, which can reduce the occurrence of secondary collisions. Moreover, after the collision force is eliminated, the buffer reset component in the anti-collision buffer mechanism can drive the laser cutting head to return to the initial position by itself, without the need to stop the machine for manual recalibration, which helps to reduce the troubleshooting time and maintain processing efficiency. At the same time, the anti-collision buffer mechanism is equipped with forward and backward anti-collision mechanisms and transverse anti-collision mechanisms, which can deal with the collision protection of the laser cutting head from two directions of movement in the horizontal plane, and can adapt to the high-speed and frequent direction-changing processing state during the cutting process, thereby improving the protection reliability under collision scenarios in different directions. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a laser cutting device for stainless steel letters according to the present invention;

[0027] Figure 2 This is a schematic diagram of the assembled Z-axis drive mechanism, anti-collision buffer mechanism, and laser cutting head in this invention.

[0028] Figure 3 This is a schematic diagram of the disassembled structure of the Z-axis guide bracket in this invention;

[0029] Figure 4 This is a schematic diagram of the anti-collision buffer mechanism in this invention;

[0030] Figure 5 This is a schematic diagram of the disassembled forward and backward anti-collision mechanism of the anti-collision buffer mechanism in this invention;

[0031] Figure 6 This is a partial half-sectional view of the forward and backward anti-collision mechanism of the anti-collision buffer mechanism in this invention;

[0032] Figure 7This is a schematic diagram of the disassembled lateral movement anti-collision mechanism of the anti-collision buffer mechanism in this invention;

[0033] Figure 8 This is a schematic cross-sectional view of the lateral movement anti-collision mechanism of the anti-collision buffer mechanism in this invention. Figure 1 ;

[0034] Figure 9 This is a schematic cross-sectional view of the lateral movement anti-collision mechanism of the anti-collision buffer mechanism in this invention. Figure 2 ;

[0035] Figure 10 This is a half-sectional view of the lateral movement anti-collision mechanism of the anti-collision buffer mechanism in this invention.

[0036] In the attached diagram, the components represented by each number are as follows:

[0037] 1. Cutting table; 2. X-axis linear drive mechanism; 3. Y-axis linear drive mechanism; 4. Z-axis drive mechanism; 401. Vertical cylinder; 402. Z-axis guide bracket; 421. Guide plate; 422. Guide rail groove; 423. U-shaped seat; 424. Connecting rod; 425. Upper positioning plate; 426. Laser rangefinder sensor; 427. Lower positioning plate; 5. Laser cutting head; 6. Anti-collision buffer mechanism; 601. Advance and retreat anti-collision mechanism; 611. Connecting arm; 612. Hinge seat; 613. Inner support rib; 614. Central annular groove; 615. Buffer positioning groove; 616. First positioning groove; 617. First precision bearing; 618. First connecting column; 619. Positioning plate; 6110. Mounting plate; 6111. First positioning post; 6112. Assembly hole; 6113. 6114. Anti-detachment ring; 6115. Second positioning groove; 6116. First permanent magnet; 6117. First positioning steel ball; 6118. Second positioning steel ball; 6119. First spring; 602. Lateral anti-collision mechanism; 621. Mounting base; 622. First mounting post; 623. Second mounting post; 624. First buffer groove; 625. Second buffer groove; 626. First lever; 627. Buffer tile; 628. Third buffer groove; 629. Second lever; 6210. Second spring; 6211. Fourth buffer groove; 6212. Third lever; 6213. Second connecting post; 6214. Second precision bearing; 6215. Positioning end cap; 6216. Second positioning post; 6217. Third spring; 6218. Fixing bolt. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 are within the scope of protection of the present invention.

[0039] This invention provides a technical solution: such as Figure 1 - Figure 10 The laser cutting device for stainless steel lettering shown includes a cutting table 1 and a laser cutting head 5. The cutting table 1 serves as the basic support platform for the entire machine, providing a flat placement reference and processing support surface for the thin stainless steel sheet. A translation drive assembly is installed on the cutting table 1, and a Z-axis drive mechanism 4 is installed on the translation drive assembly. The laser cutting head 5 is installed on the Z-axis drive mechanism 4 through an anti-collision buffer mechanism 6. The Z-axis drive mechanism 4 drives the laser cutting head 5 to adjust its vertical height at the top of the cutting table 1, thereby matching the cutting focal length requirements of different thickness plates. The translation drive assembly drives the Z-axis drive mechanism 4 to perform lateral and longitudinal translation in the horizontal plane, so that the laser cutting head 5 installed on the Z-axis drive mechanism 4 moves along the preset cutting trajectory of the stainless steel lettering.

[0040] It should be noted that the anti-collision buffer mechanism 6, as a flexible connecting component, is connected in series between the Z-axis drive mechanism 4 and the laser cutting head 5. It can stably transmit lifting and translational forces, and when the laser cutting head 5 accidentally touches a warped plate or lifts up excess material, it can buffer and unload the force through the relative movement of its own structure, avoiding the laser cutting head 5 from being subjected to rigid collision impact, and playing a collision protection role for the laser cutting head 5. When the obstacle in the path of the laser cutting head 5 is removed, its anti-collision buffer mechanism 6 can return to its initial position by its own spring-back reset design, so that the laser cutting head 5 resets itself.

[0041] The anti-collision buffer mechanism 6 includes a forward and backward anti-collision mechanism 601 and a lateral anti-collision mechanism 602. The forward and backward anti-collision mechanism 601 mainly corresponds to the collision protection of the laser cutting head 5 in the forward and backward feeding direction (i.e., moving along the X-axis direction), and the lateral anti-collision mechanism 602 mainly corresponds to the collision protection of the laser cutting head 5 in the lateral direction (i.e., moving along the Y-axis direction).

[0042] The forward and backward anti-collision mechanism 601 includes a rotor support and assembly mechanisms rotatably mounted at both ends of the rotor support. A first buffer reset assembly is installed between the two assembly mechanisms and the rotor support. The rotor support is the carrier for mounting the transverse anti-collision mechanism 602 in the forward and backward anti-collision mechanism 601. The assembly mechanisms at both ends of the rotor support are fixedly mounted on the Z-axis drive mechanism 4. When the laser cutting head 5 moves along the X-axis and collides, the transverse anti-collision mechanism 602 drives the rotor support to deflect. The first buffer reset assembly compresses and absorbs the impact kinetic energy. When the external force is eliminated, the first buffer reset assembly resets and pushes the rotor support to rotate and reset.

[0043] The lateral anti-collision mechanism 602 includes a rotor mechanism and a positioning end cover 6215. The front end of the rotor mechanism is fixedly installed on the outside of the laser cutting head 5, and the tail end of the rotor mechanism is rotatably connected to the positioning end cover 6215. The rotor mechanism is provided with a second buffer reset component inside. The rotor bracket is fixedly installed on the tail end of the positioning end cover 6215. The rotor mechanism is fixed to the laser cutting head 5 and cooperates with the positioning end cover 6215 to provide support for the laser cutting head 5. When the laser cutting head 5 is laterally bumped while translating along the Y-axis, the rotor mechanism and the positioning end cover 6215 cooperate to compress and unload the second buffer reset component. When the external force is eliminated, the second buffer reset component resets and pushes the rotor mechanism back to its original position automatically.

[0044] In this embodiment, as Figure 1 As shown, the translation drive assembly includes an X-axis linear drive mechanism 2 and a Y-axis linear drive mechanism 3. Both the Y-axis linear drive mechanism 3 and the X-axis linear drive mechanism 2 are ball screw linear drive mechanisms. There are two sets of X-axis linear drive mechanisms 2, which are respectively installed on both sides of the cutting table 1. The two sets of X-axis linear drive mechanisms 2 are parallel to each other and are synchronously driven by the same controller. The Y-axis linear drive mechanism 3 is installed on top of the two sets of X-axis linear drive mechanisms 2. The two sets of X-axis linear drive mechanisms 2 drive the Y-axis linear drive mechanism 3 to translate along the X-axis on the cutting table 1. It should be noted that ball screw linear drive mechanisms are widely used in various machining equipment. Their structural design, working principle and installation method are all known technologies. Therefore, this application does not describe the specific structural design of the X-axis linear drive mechanism 2 and the Y-axis linear drive mechanism 3 in detail.

[0045] In this embodiment, as Figure 4 As shown, the rotor support in the forward / reverse anti-collision mechanism 601 includes a connecting arm 611 and a hinge seat 612, as... Figures 5-6As shown, the connecting arm 611 is a flat plate-like structure. The connecting arm 611 is fixedly installed at the tail end of the positioning end cover 6215. The flat structure of the connecting arm 611 makes the connection between the connecting arm 611 and the positioning end cover 6215 more stable. There are two hinge seats 612, both of which are cylindrical structures. The two hinge seats 612 are integrally formed at both ends of the connecting arm 611 and are set at a perpendicular angle to the connecting arm 611. The two hinge seats 612 are located on both sides of the transverse anti-collision mechanism 602 and are symmetrically arranged with the central axis of the transverse anti-collision mechanism 602 as the center. The symmetrical arrangement of the hinge seats 612 allows the rotor support to be evenly stressed on both sides when it deflects, reducing the possibility of unilateral wear and jamming, and effectively improving the smoothness of the cooperation between the forward and backward anti-collision mechanism 601 and the transverse anti-collision mechanism 602.

[0046] The two hinge seats 612 have a closed end near the transverse anti-collision mechanism 602, and the other end of the two hinge seats 612 has an open end, so that the assembly mechanism can be installed into the inner side of the hinge seat 612 from the outside.

[0047] like Figures 5-6 As shown, the inner sides of the two hinge seats 612 are formed by an integrally formed inner support rib 613 to form a central annular groove 614 and multiple sets of buffer positioning grooves 615. The central annular groove 614 is coaxial with the hinge seat 612. At the same time, the multiple sets of buffer positioning grooves 615 are all designed with arcs and are coaxial with the central annular groove 614. The multiple sets of buffer positioning grooves 615 are distributed around the circumference at intervals on the outer side of the central annular groove 614. The bottom center of each buffer positioning groove 615 is integrally formed with a first positioning groove 616.

[0048] In this embodiment, as Figures 5-6 As shown, the assembly mechanism in the forward / reverse anti-collision mechanism 601 includes a first connecting column 618 and an anti-detachment ring 6113. The front end of the first connecting column 618 is rotatably mounted in the central annular groove 614 via a first precision bearing 617. The rear end of the first connecting column 618 extends out of the central annular groove 614 and is integrally formed with a positioning plate 619 and a mounting plate 6110. The positioning plate 619, the mounting plate 6110, and the first connecting column 618 are coaxially arranged. At the same time, the positioning plate 619 and the mounting plate 6110 are parallel to each other and have an assembly gap. In the middle, the positioning plate 619 slides against the end face of the inner support rib 613, and the side of the positioning plate 619 that is in contact with the inner support rib 613 corresponds to the center position of each buffer positioning groove 615. A first positioning post 6111 that slides with the buffer positioning groove 615 is integrally formed. The end of the first positioning post 6111 slides against the bottom of the buffer positioning groove 615. Each first positioning post 6111 has a through-hole 6112 at its center, and the position of the through-hole 6112 corresponds to the position of the first positioning groove 616.

[0049] In this embodiment, as Figure 5 As shown, the anti-detachment ring 6113 is composed of two semi-circular rings assembled together, and the anti-detachment ring 6113 is snapped into the assembly gap between the positioning plate 619 and the mounting plate 6110. At the same time, the outer edge of the anti-detachment ring 6113 is fixedly installed to the outer edge of the hinge seat 612 by screws. By using the cooperation between the anti-detachment ring 6113 and the positioning plate 619, the first connecting column 618 is axially limited to prevent the connecting column from detaching from the central ring groove 614. The side of the anti-detachment ring 6113 that is in contact with the positioning plate 619 has a second positioning groove 6114 corresponding to the position of the first positioning groove 616.

[0050] In this embodiment, as Figures 5-6 As shown, the first buffer reset component in the forward and backward anti-collision mechanism 601 includes several first springs 6119 and several sets of ball positioning components. Each first spring 6119 is an arc spring of the same specification. Each pair of first springs 6119 forms a group and is installed in the corresponding buffer positioning groove 615. The two first springs 6119 in the same group are located on both sides of the first positioning post 6111 that slides in the buffer positioning groove 615. Under normal conditions, the tension of the two first springs 6119 in the same group on both sides of the first positioning post 6111 is in a balanced state, so that the center of the buffer positioning groove 615 is aligned with the first positioning post 6111, thereby keeping the hinge seat 612 at its initial angle. At the same time, it also ensures that the two ends of the mounting hole 6112 accurately coincide with the positions of the first positioning groove 616 and the second positioning groove 6114.

[0051] To ensure that the forward and backward anti-collision mechanism 601 can provide stable horizontal support to the lateral anti-collision mechanism 602 and the laser cutting head 5 under normal conditions, and to prevent the rotor support from relative deflection between itself and the first connecting column 618 under the weight of the laser cutting head 5 and the lateral anti-collision mechanism 602, such as... Figures 5-6As shown, a set of ball bearing positioning components is installed in the assembly hole 6112 at the center of each first positioning post 6111. Each set of ball bearing positioning components includes a first positioning steel ball 6116 and a second positioning steel ball 6118. The first positioning steel ball 6116 and the second positioning steel ball 6118 are the same size. A first permanent magnet 6115 and a second permanent magnet 6117 are also provided between the first positioning steel ball 6116 and the second positioning steel ball 6118. The magnetic poles at opposite ends of the first permanent magnet 6115 and the second permanent magnet 6117 are the same, so that the first permanent magnet 6115 and the second permanent magnet 6117 repel each other, pushing the first positioning steel ball 6116 and the second positioning steel ball 6118 from the inside out. Assembly holes 6112 are provided so that the first positioning steel ball 6116 and the second positioning steel ball 6118 are respectively engaged with the second positioning groove 6114 and the first positioning groove 616 at the corresponding positions; under normal conditions, the connecting arm 611 in the rotor bracket always maintains the initial side-standing state under the constraint of the first buffer reset assembly and the assembly mechanism. It should be noted that in order to ensure the normal use of the ball positioning assembly and reduce the overall weight of the forward and backward anti-collision mechanism 601, except for the first buffer reset assembly, the rest of the structure in the forward and backward anti-collision mechanism 601 is integrally molded with high-strength modified plastic. The high-strength modified plastic can be either glass fiber reinforced PPS or carbon fiber reinforced PEEK.

[0052] In this embodiment, both the first positioning groove 616 and the second positioning groove 6114 are spherical grooves, and the groove depth of the first positioning groove 616 and the second positioning groove 6114 is one-third of the diameter of the first positioning steel ball 6116 and the second positioning steel ball 6118. The groove edges of the first positioning groove 616 and the second positioning groove 6114 are both designed with a rounded transition. In another embodiment, the first positioning groove 616 and the second positioning groove 6114 can also be conical grooves, and the groove depth of the first positioning groove 616 and the second positioning groove 6114 is half the diameter of the first positioning steel ball 6116 and the second positioning steel ball 6118. The groove opening diameter of the first positioning groove 616 and the second positioning groove 6114 is the same as the diameter of the first positioning steel ball 6116 and the second positioning steel ball 6118. In this design, when the laser cutting head 5 collides while moving along the X-axis, the laser cutting head 5 causes the lateral anti-collision mechanism 602 to deflect as a whole, thereby causing the connecting arm 611 to deflect synchronously in the direction of deflection of the lateral anti-collision mechanism 602. Since the first connecting post 618, the positioning plate 619, and the mounting plate 6110 are integrally formed and connected to the Z-axis drive mechanism 4 through the mounting plate 6110, their angles remain fixed. Therefore, the orientation of the first positioning post 6111 remains fixed. When the connecting arm 611 deflects, it causes the hinge seat 612 to rotate synchronously. At the same time, the anti-detachment ring 6113 rotates synchronously with the hinge seat 612. During the rotation, the first spring 6119 on one side of the first positioning post 6111 is compressed, while the tension of the first spring 6119 on the other side is released. Simultaneously, the first positioning steel ball 6116 and the second positioning steel ball... As the hinge seat 612 and the anti-detachment ring 6113 rotate, 6118 disengages from the corresponding second positioning groove 6114 and first positioning groove 616 respectively. When the external force that caused the laser cutting head 5 to collide is eliminated, the tension of the compressed first spring 6119 is released, pushing the first positioning post 6111 to reset. Meanwhile, the first spring 6119 on the other side, which had released its tension, is recompressed during the reset process of the first positioning post 6111 until the first positioning post 6111 returns to the center position of the buffer positioning groove 615, so that the tension of the first spring 6119 on both sides of the first positioning post 6111 returns to balance. At this time, the first positioning steel ball 6116 and the second positioning steel ball 6118, under the action of the first permanent magnet 6115 and the second permanent magnet 6117, re-engage and position themselves with the corresponding second positioning groove 6114 and first positioning groove 616.

[0053] In this embodiment, as Figures 2-3 As shown, the Z-axis drive mechanism 4 includes a vertical cylinder 401 and a Z-axis guide bracket 402. The cylinder body of the vertical cylinder 401 is vertically fixed on the sliding base of the Y-axis linear drive mechanism 3. The Y-axis linear drive mechanism 3 drives the vertical cylinder 401 to move horizontally along the Y-axis direction on the top of the cutting table 1. The Z-axis guide bracket 402 is vertically fixed on the front of the cylinder body of the vertical cylinder 401.

[0054] In this embodiment, as Figure 3 As shown, the Z-axis guide bracket 402 includes a guide plate 421, a U-shaped seat 423, and a laser rangefinder 426. A guide groove 422 is formed on the front of the guide plate 421 along the length of the Z-axis guide bracket 402. An upper positioning plate 425 and a lower positioning plate 427 are respectively installed at the top and bottom of the Z-axis guide bracket 402. The U-shaped seat 423 is horizontally slidably installed in the guide groove 422, allowing it to move vertically along the direction of the guide groove 422. The inner sides of both ends of the front of the U-shaped seat 423 are bolted to the outer side of the mounting plate 6110 in the forward / backward anti-collision mechanism 601. A connecting rod 424 is vertically mounted on the top. The top end of the connecting rod 424 slides through the upper positioning plate 425 and is fixedly connected to the telescopic end of the vertical cylinder 401. A laser rangefinder 426 is vertically mounted on the side of the U-shaped seat 423. In this design, the U-shaped seat 423 serves as the mounting carrier for the entire anti-collision buffer mechanism 6, ensuring that the rotation axis of the entire forward and backward anti-collision mechanism 601 remains horizontal. This also provides circumferential limitation for the positioning end cap 6215 in the transverse anti-collision mechanism 602. In addition, during the extension and retraction process, the vertical cylinder 401 drives the U-shaped seat 423 to move up and down along the guide rail groove 422 via the connecting rod 424, thereby achieving adjustment. The purpose of adjusting the height of the laser cutting head 5 is to monitor the distance between the bottom working end of the laser cutting head 5 and the material in real time using the laser range sensor 426, and to feed the data back to the control terminal of the vertical cylinder 401 so that the vertical cylinder 401 can accurately adjust the height of the laser cutting head 5. In order to detect the attitude change of the laser cutting head 5 in time when a collision occurs and to feed the fault signal back to the control terminal of the laser cutting equipment, a dual-axis optical attitude sensor that can monitor the change of the X-axis and Y-axis orientation angle of the laser cutting head 5 in real time can be installed at the middle position of the top of the U-shaped base 423. When the angle of the laser cutting head 5 changes, the dual-axis optical attitude sensor feeds the fault signal back to the control terminal of the laser cutting equipment, and the control terminal of the laser cutting equipment controls the laser cutting equipment to stop urgently. At the same time, the dual-axis optical attitude sensor can also detect the angle of the laser cutting head 5 after reset. When the laser cutting head 5 fails to restore the initial angle under the action of the first buffer reset component and the second buffer reset component, the dual-axis optical attitude sensor also feeds the detection data back to the control terminal of the laser cutting equipment, and the control terminal of the laser cutting equipment issues a prompt notification to remind the operator to manually intervene and reset the correction.

[0055] In this embodiment, as Figures 7-10As shown, the rotor mechanism in the lateral anti-collision mechanism 602 includes a mounting base 621 and a buffer plate 627. The back of the mounting base 621 is attached to the surface of the laser cutting head 5 and fixed by bolts. A first mounting post 622 is integrally formed at the center of the front of the mounting base 621. A second mounting post 623 is integrally formed on the coaxial side of the end of the first mounting post 622 away from the mounting base 621. A second connecting post 6213 is integrally formed on the coaxial side of the end of the second mounting post 623 away from the first mounting post 622. Several second buffer grooves 625, which are coaxial with the first mounting post 622 and are arc-shaped, are spaced apart circumferentially in the middle of the first mounting post 622. On the outer side of the mounting post 622, corresponding to one end of each second buffer groove 625, a first lever 626 is integrally formed. Multiple first levers 626 are evenly spaced around the circumference of the outer side of the mounting post 622. Furthermore, the outer diameter of the second mounting post 623 is smaller than the outer diameter of the first mounting post 622, forming an L-shaped annular first buffer groove 624 between the outer side of the second mounting post 623 and the end of the first mounting post 622. The first buffer groove 624 has the same depth as the second buffer groove 625. The number of buffer tiles 627 is the same as the number of second buffer grooves 625, and each buffer tile 627 has an arc structure. Multiple buffer tiles 627 are interlocked. An annular buffer assembly, coaxial with the first mounting post 622, is formed on the outer side of the first mounting post 622. Each buffer tile 627 corresponds to a second buffer groove 625, and adjacent buffer tiles 627 are fixedly connected by fixing bolts 6218. On the inner side of each buffer tile 627, corresponding to the positions of the first buffer groove 624 and the second buffer groove 625, a fourth buffer groove 6211 and a third buffer groove 628 are respectively opened circumferentially. The two ends of the third buffer groove 628 are closed ends. The third buffer groove 628 on the inner side of each buffer tile 627 and the second buffer groove 625 on the outer side of the first mounting post 622 are engaged to form an arc-shaped buffer cavity. Meanwhile, the first lever 626 at the end of the second buffer groove 625 is slidably engaged in the third buffer groove 628. A second lever 629 is integrally formed at the end of the third buffer groove 628 on the inner side of each buffer tile 627 away from the first lever 626. The second lever 629 is slidably engaged in the corresponding second buffer groove 625. The first lever 626 cooperates with the third buffer groove 628, and the second lever 629 cooperates with the second buffer groove 625. While maintaining the circumferential rotation effect of the buffer tile 627, it limits its axial movement to prevent the annular buffer kit composed of buffer tiles 627 from axially moving outside the first mounting post 622 and the second mounting post 623.A third lever 6212 is integrally formed at one end of the fourth buffer groove 6211 on the inner side of the buffer tile 627 near the second lever 629. A fitting gap for installing the positioning end cap 6215 is reserved between the side of the third lever 6212 near the end of the buffer tile 627 and the inner wall of the fourth buffer groove 6211. In this design, when multiple buffer tiles 627 are assembled to form a ring-shaped buffer kit, the side of the fourth buffer groove 6211 on the inner side of each buffer tile 627 near the end of the buffer tile 627 forms a continuous... The positioning end cap 6215 is slidably engaged with the annular groove formed on the inner side of the annular buffer assembly composed of multiple buffer tiles 627. This not only prevents the circumferential rotation between the positioning end cap 6215, the annular buffer assembly, and the second connecting post 6213, but also prevents the positioning end cap 6215 from detaching. The third lever 6212 is slidably engaged with the first buffer groove 624. The end of the fourth buffer groove 6211 on the inner side of the buffer tile 627 away from the third lever 6212 is open.

[0056] In this embodiment, the positioning end cap 6215 of the transverse anti-collision mechanism 602 has a mounting groove (not shown) at the center of the end away from the connecting arm 611. The second connecting column 6213 is rotatably engaged with the mounting groove on the positioning end cap 6215 through the second precision bearing 6214. In order to cooperate with the rotor mechanism and the second buffer reset assembly to realize buffering and reset during the bidirectional lateral movement of the laser cutting head 5, the side of the positioning end cap 6215 near the first buffer groove 624 is integrally formed with a second positioning post 6216 corresponding to each buffer tile 627 position. The radial inner side of the second positioning post 6216 is slidably engaged with the inner side of the first buffer groove 624, and the radial outer side of the second positioning post 6216 is slidably engaged with the inner side of the open end of the fourth buffer groove 6211 in the corresponding buffer tile 627.

[0057] In this embodiment, in order to cooperate with the rotor mechanism and the positioning end cover 6215 to achieve buffering and reset when a collision occurs during the bidirectional lateral movement of the laser cutting head 5, such as Figures 7-10As shown, the second buffer reset assembly in the lateral collision avoidance mechanism 602 specifically includes several second springs 6210 and several third springs 6217. Each buffer cavity has one second spring 6210 installed inside, and the two ends of the second spring 6210 abut against the first lever 626 and the second lever 629 at the corresponding ends of the buffer cavity. In this design, under normal conditions, the buffer pad 627, with the tension of the second springs 6210, ensures that the first lever 626 in the corresponding buffer cavity always abuts against the end of the third buffer groove 628, while the second lever 629 always abuts against the end of the second buffer groove 625. Several third springs 6217 are respectively installed on the fourth buffer inside the corresponding buffer pad 627. Inside the groove 6211, the two ends of the third spring 6217 abut against the third lever 6212 and the second positioning post 6216 at the two ends of the corresponding fourth buffer groove 6211, respectively; the second spring 6210 and the third spring 6217 are both arc springs of the same specification. In the structural design of the entire transverse anti-collision mechanism 602, the positioning end cover 6215 is fixed to the connecting arm 611 in the forward and backward anti-collision mechanism 601, so that the positioning end cover 6215 is circumferentially fixed and serves as a stator component in the transverse anti-collision mechanism 602. Therefore, the second positioning post 6216 on the positioning end cover 6215 is always under the tension of the third spring 6217 under normal conditions and always abuts against the third lever 6212 in the adjacent buffer tile 627.

[0058] Under normal conditions, the laser cutting head 5 remains in its initial vertical position under the constraints of the second buffer reset assembly, rotor mechanism, and positioning end cover 6215.

[0059] The positioning end cap 6215, the rotor mechanism, and the second buffer reset assembly work together to realize the principle and process of bidirectional lateral movement anti-collision buffering and reset of the laser cutting head 5, with attached... Figure 8 and attached Figure 9For example, from the front view of the laser cutting head 5, when the laser cutting head 5 moves laterally to the left and collides, the laser cutting head 5 drives the mounting base 621 to rotate counterclockwise. The first mounting post 622 rotates counterclockwise with the mounting base 621, and the first deflector 626 located in the same buffer cavity deflects towards the second deflector 629. At this time, because the third deflector 6212 in the buffer tile 627 abuts against the adjacent second positioning post 6216, the annular buffer kit formed by the buffer tiles 627 cannot be used in the second spring. Under the tension of spring 6210, the second spring 6210 rotates counterclockwise with the first mounting post 622. As the first lever 626 rotates, the second spring 6210 is compressed, buffering the impact force on the laser cutting head 5. When the external force that caused the laser cutting head 5 to collide is eliminated, the second spring 6210 returns to its original position, pushing the first lever 626 to return to its original position, thereby causing the first mounting post 622 to drive the mounting base 621 back to its initial angle. When the laser cutting head 5 moves laterally to the right and collides, the laser cutting head 5 drives the mounting base 621... Rotating clockwise, the first mounting post 622 rotates clockwise along with the mounting base 621. At this time, the first deflector 626, located in the same buffer cavity, deflects away from the second deflector 629. Since the first deflector 626 is always in contact with the end of the third buffer groove 628, the first deflector 626 synchronously drives the annular buffer assembly formed by the buffer tiles 627 to rotate clockwise when rotating. When the annular buffer assembly rotates clockwise, the third deflector 6212 in the buffer tile 627 moves towards the end of the same fourth buffer groove 628. The second positioning post 6216 inside 211 deflects to one side and simultaneously compresses the third spring 6217 to buffer the impact force on the laser cutting head 5. When the external force that caused the laser cutting head 5 to collide is eliminated, the third spring 6217 resets and pushes the third lever 6212 to reset. At the same time as the third lever 6212 resets, it simultaneously drives the annular buffer kit to rotate, thereby pushing the first lever 626 to reset through the annular buffer kit, so that the first mounting post 622 drives the mounting base 621 to return to the initial angle.

[0060] In some embodiments, in order to minimize the load on the first buffer reset component in the forward and backward anti-collision mechanism 601, the entire transverse anti-collision mechanism 602, except for the second buffer reset component and the fixing bolt 6218, is made of any one of the following materials with stiffness comparable to steel: carbon fiber reinforced PPA, carbon fiber reinforced PEEK, and glass fiber reinforced PPS.

[0061] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0062] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser cutting device for stainless steel letters, characterized in that, Laser cutting equipment includes: A cutting table, on which a translation drive assembly is mounted, and on which a Z-axis drive mechanism is mounted; The laser cutting head is mounted on the Z-axis drive mechanism via an anti-collision buffer mechanism. The Z-axis drive mechanism drives the laser cutting head to adjust its vertical height at the top of the cutting table. The anti-collision buffer mechanism includes: The forward and backward anti-collision mechanism includes a rotor support and assembly mechanisms rotatably mounted at both ends of the rotor support. A first buffer reset assembly is installed between the two sets of assembly mechanisms and the rotor support. The lateral movement anti-collision mechanism includes a rotor mechanism and a positioning end cover. The front end of the rotor mechanism is fixedly installed on the outside of the laser cutting head, and the tail end of the rotor mechanism is rotatably connected to the positioning end cover. The rotor mechanism is equipped with a second buffer reset component inside. The rotor bracket is fixedly installed at the tail end of the positioning end cover, and the assembly mechanisms at both ends of the rotor bracket are fixedly installed on the Z-axis drive mechanism.

2. The laser cutting device for stainless steel characters according to claim 1, characterized in that, Translation drive components include: The X-axis linear drive mechanism consists of two sets, which are installed on both sides of the cutting table. The two sets of X-axis linear drive mechanisms are parallel to each other and are controlled by the same controller for synchronous drive. The Y-axis linear drive mechanism is mounted on top of the two sets of X-axis linear drive mechanisms. The two sets of X-axis linear drive mechanisms drive the Y-axis linear drive mechanism to translate along the X-axis on the cutting table. Both the Y-axis linear drive mechanism and the X-axis linear drive mechanism are ball screw linear drive mechanisms.

3. The laser cutting device for stainless steel characters according to claim 1, characterized in that, The rotor support in the forward and backward collision avoidance mechanism includes: The connecting arm is a flat, plate-like structure, and is fixedly installed at the tail end of the positioning end cover. The hinge base has two parts, both of which are cylindrical structures. Both hinge bases are integrally formed at both ends of the connecting arm and are set at a perpendicular angle to the connecting arm. The two hinge seats are located on both sides of the transverse anti-collision mechanism and are symmetrically arranged with the central axis of the transverse anti-collision mechanism as the center. The end of the two hinge seats closer to the transverse anti-collision mechanism is a closed end, and the other end of the two hinge seats is an open end, so as to facilitate the assembly mechanism to be installed from the outside into the inside of the hinge seats. The inner sides of the two hinge seats are formed by an integrally molded inner support rib to form a central ring groove and multiple sets of buffer positioning grooves. The central ring groove is coaxial with the hinge seat. The multiple sets of buffer positioning grooves are all designed with arcs and are coaxial with the central ring groove. The multiple sets of buffer positioning grooves are distributed around the circumference on the outer side of the central ring groove, and the bottom center of each buffer positioning groove is integrally molded with a first positioning groove.

4. The laser cutting device for stainless steel characters according to claim 3, characterized in that, The assembly mechanism in the forward and backward collision avoidance mechanism includes: The first connecting column has its front end rotatably mounted in the central annular groove via a first precision bearing. The tail end of the first connecting column is integrally formed with a coaxially arranged positioning plate and mounting plate. The positioning plate and mounting plate are parallel to each other and have an assembly gap. The positioning plate slides against the end face of the inner support rib. The side of the positioning plate that is in contact with the inner support rib has an integrally formed first positioning post that slides with the buffer positioning groove at the center position of each buffer positioning groove. The end of the first positioning post slides against the bottom of the buffer positioning groove. Each first positioning post has an assembly hole that passes through both ends at the center. The assembly hole corresponds to the position of the first positioning groove. The anti-detachment ring is composed of two semi-circular rings. The anti-detachment ring is snapped into the assembly gap between the positioning plate and the mounting plate. The outer edge of the anti-detachment ring is fixed to the outer edge of the hinge seat by screws. The side of the anti-detachment ring that is in contact with the positioning plate has a second positioning groove corresponding to the position of the first positioning groove.

5. The laser cutting device for stainless steel characters according to claim 4, characterized in that, The first buffer reset component in the forward and backward collision avoidance mechanism includes: The first spring, there are several first springs, each of which is an arc spring of the same specification. Every two first springs are grouped together and installed in the corresponding buffer positioning grooves. The two first springs in the same group are located on both sides of the first positioning post that slides in the buffer positioning groove. The ball positioning assembly consists of several sets and is respectively assembled in the assembly hole at the center of each first positioning post. Each set of ball positioning assemblies includes a first positioning steel ball and a second positioning steel ball. The first positioning steel ball and the second positioning steel ball are the same size. A first permanent magnet and a second permanent magnet are also provided between the first positioning steel ball and the second positioning steel ball. The magnetic poles at the opposite ends of the first permanent magnet and the second permanent magnet are the same. Under normal conditions, the connecting arm in the rotor support always maintains its initial side-standing state under the constraint of the first buffer reset assembly and the assembly mechanism; Both the first positioning groove and the second positioning groove are spherical grooves, and the groove depth of the first positioning groove and the second positioning groove is one-third of the diameter of the first positioning steel ball and the second positioning steel ball. The groove edges of the first positioning groove and the second positioning groove are both designed with rounded transition. Except for the first buffer reset component, the rest of the structure in the forward and backward anti-collision mechanism is integrally molded with high-strength modified plastic. The high-strength modified plastic is either glass fiber reinforced PPS or carbon fiber reinforced PEEK.

6. The laser cutting device for stainless steel characters according to claim 1, characterized in that, The Z-axis drive mechanism includes: The vertical cylinder has its cylinder body fixedly mounted vertically on the sliding base of the Y-axis linear drive mechanism. The Y-axis linear drive mechanism drives the vertical cylinder to move horizontally along the Y-axis at the top of the cutting table. Z-axis guide bracket, the Z-axis guide bracket is vertically fixedly installed on the front of the vertical cylinder body; The Z-axis guide bracket includes a guide plate, and a guide rail groove is formed on the front side of the guide plate along the length direction of the Z-axis guide bracket. An upper positioning plate and a lower positioning plate are respectively installed on the top and bottom of the Z-axis guide bracket. The U-shaped seat is horizontally slidably installed in the guide rail groove so that the U-shaped seat can move vertically along the direction of the guide rail groove. The inner sides of both ends of the front of the U-shaped seat are fixedly installed on the outer side of the mounting plate in the forward and backward anti-collision mechanism by bolts. A connecting rod is vertically installed on the U-shaped seat. The top end of the connecting rod slides through the upper positioning plate and is fixedly connected to the telescopic end of the vertical cylinder. The laser rangefinder is mounted vertically on the side of the U-shaped base.

7. The laser cutting device for stainless steel characters according to claim 1, characterized in that, The rotor mechanism in the lateral collision avoidance mechanism includes: The mounting base has its back side attached to the surface of the laser cutting head and fixed with bolts. A first mounting post is integrally formed at the center of the front side of the mounting base. A second mounting post is integrally formed on the coaxial side of the end of the first mounting post away from the mounting base. A second connecting post is integrally formed on the coaxial side of the end of the second mounting post away from the first mounting post. Several arc-shaped second buffer grooves are spaced apart circumferentially in the middle of the first mounting post. All the second buffer grooves are coaxial with the first mounting post. A first lever is integrally formed on the outer side of the first mounting post corresponding to one end of each second buffer groove. Multiple first levers are evenly distributed around the circumference on the outer side of the first mounting post. The outer diameter of the second mounting post is smaller than the outer diameter of the first mounting post, so that an L-shaped annular first buffer groove is formed between the outer side of the second mounting post and the end of the first mounting post. The number of buffer tiles matches the number of second buffer slots, and each buffer tile has an arc structure. Multiple buffer tiles are fastened together on the outside of the first mounting post to form a ring-shaped buffer assembly coaxial with the first mounting post. Each buffer tile corresponds to a second buffer slot. Adjacent buffer tiles are fixedly connected by fixing bolts. On the inner side of each buffer tile, corresponding to the positions of the first and second buffer slots, a fourth buffer slot and a third buffer slot are respectively opened circumferentially. The two ends of the third buffer slot are closed. The third buffer slot on the inner side of each buffer tile is fastened together with the corresponding second buffer slot on the outside of the first mounting post to form... An arc-shaped buffer cavity is provided. The first lever at the end of the second buffer groove is slidably engaged in the third buffer groove. The end of the third buffer groove on the inner side of each buffer tile away from the first lever is integrally formed with a second lever, which is slidably engaged in the corresponding second buffer groove. The end of the fourth buffer groove on the inner side of the buffer tile near the second lever is integrally formed with a third lever. A fitting gap for installing a positioning end cap is reserved between the side of the third lever near the end of the buffer tile and the inner wall of the fourth buffer groove. The third lever is slidably engaged in the first buffer groove. The end of the fourth buffer groove on the inner side of the buffer tile away from the third lever is an open design.

8. The laser cutting device for stainless steel characters according to claim 7, characterized in that, The positioning end cap of the lateral anti-collision mechanism has a mounting groove at the center of the end away from the connecting arm. The second connecting post is rotatably engaged with the mounting groove on the positioning end cap through the second precision bearing. The edge of the positioning end cap is slidably engaged with the inner side of the end of the annular buffer kit composed of multiple buffer tiles. On the side of the positioning end cap near the first buffer groove, a second positioning post is integrally formed for each buffer tile position. The radial inner side of the second positioning post is slidably engaged with the inner side of the first buffer groove, and the radial outer side of the second positioning post is slidably engaged with the inner side of the open end of the fourth buffer groove in the corresponding buffer tile.

9. The laser cutting device for stainless steel characters according to claim 8, characterized in that, The second buffer reset component in the lateral collision avoidance mechanism includes: The second spring, there are several second springs, and the several second springs are respectively installed inside the corresponding buffer cavity. The two ends of the second spring abut against the first and second levers at the two ends of the corresponding buffer cavity. The third spring, there are several third springs, and the several third springs are respectively installed in the fourth buffer groove on the inner side of the corresponding buffer tile. The two ends of the third spring abut against the third push block and the second positioning post at the two ends of the corresponding fourth buffer groove. The second and third springs are both curved springs of the same specifications.

10. The laser cutting device for stainless steel characters according to claim 9, characterized in that, Under normal conditions, the laser cutting head remains in its initial vertical position under the constraints of the second buffer reset assembly, rotor mechanism, and positioning end cap.

Images