Laser cutting protection structure

Abstract

The utility model discloses a laser cutting protection structure, it includes laser cutting head body, the front side of laser cutting head body is provided with adjustable protection subassembly, the utility model discloses technical scheme, through setting up laser cutting head body and adjustable protection subassembly, the defect of existing protection structure is solved pertinently: servo motor in adjustable protection subassembly can drive connecting disc, fixed link drive splashproof light filter structure rotation, realize the dynamic adjustment of protection position and angle, can adapt to different cutting angle and workpiece size, cover the protection demand of different direction of operator, aiming at the problem that the lift adjustment depends on manual, and lift structure can automatically drive splashproof light filter structure to lift, need not manual operation, and with servo motor, pressure fixed structure all external PLC controller, realize the automation accurate control, improve the regulation efficiency in high -power cutting operation, eliminate operation delay hidden danger.

Description

Technical Field

[0001] This utility model relates to the field of laser processing equipment technology, and in particular to a laser cutting protective structure. Background Technology

[0002] Laser cutting involves focusing a laser beam emitted from a laser source into a high-power-density beam through an optical path system. This beam irradiates the surface of the workpiece, causing it to reach its melting or boiling point. Simultaneously, high-pressure gas coaxial with the beam blows away the molten or vaporized metal. Laser cutting uses an invisible beam of light instead of a traditional mechanical blade, offering advantages such as high precision, fast cutting speed, no limitation on cutting patterns, automatic layout to save materials, smooth cuts, and low processing costs. It is gradually improving upon or replacing traditional metal cutting processes and equipment. The cutting equipment in a laser cutting machine is the laser cutting head.

[0003] Currently, Chinese utility model patent CN220050450U discloses a laser cutting head with a protective structure. This utility model includes a laser cutting head body with an adjustment screw hole at its top. An adjustment screw rod is threaded into the adjustment screw hole, and a balance rod is fixedly connected to the top of one side of the adjustment screw rod. A connecting plate is fixedly connected to the bottom of the balance rod. In use, this utility model allows for the filtering of the laser light generated by the laser cutting head body using a filter. If filtering is not required or if maintenance of the laser cutting head body is needed, the positioning partition can be removed, separating it from the positioning slot. Then, the balance guide plate can be lifted using a pull ring, causing the balance guide plate and the filter connecting plate to move upwards. This causes the connecting slider to slide in the guide groove. When the balance guide plate passes the positioning slot, the positioning partition can be inserted to position and support the balance guide plate. At this point, the filter connecting plate can be adjusted to a suitable height for easy maintenance of the laser cutting head body.

[0004] According to the aforementioned patent, the existing protective structure of laser cutting heads has several shortcomings that need improvement: First, the protective components lack flexibility in adjustment, only allowing for fixed-position protection through manual operation. The protective position and angle cannot be dynamically adjusted according to the cutting angle and workpiece size, resulting in incomplete protection coverage for operators in different positions. Second, the lifting and lowering adjustment relies on manual operation, making automated and precise control difficult. In high-power cutting operations, this not only leads to low adjustment efficiency but also poses safety hazards due to operational delays. Third, the protective design is simplistic and not integrated. A filter alone cannot block the high-temperature molten sparks (over 1500℃, 0.5-3mm diameter) generated when cutting metal with a laser of power ≥1000W, easily causing burns or fires. Furthermore, small spatters easily adhere to the filter surface, affecting the protective effect and causing damage. Simultaneously, the filter components are directly exposed to the cutting environment, making them susceptible to spark impacts and high-temperature baking, significantly shortening their service life. Therefore, a laser cutting protective structure is needed to solve these problems. Summary of the Invention

[0005] The main purpose of this utility model is to provide a laser cutting protective structure, aiming to solve the shortcomings of existing laser cutting head protective structures in several aspects that need improvement: First, the protective components lack flexibility in adjustment, and can only achieve fixed-position protection manually. It is impossible to dynamically adjust the protective position and angle according to the cutting angle and workpiece size, resulting in incomplete protection coverage for operators in different positions. Second, the lifting and adjustment rely on manual operation, making it difficult to achieve automated and precise control. In high-power cutting operations, not only is the adjustment efficiency low, but there are also safety hazards caused by operation delays. Third, the protective design is simple and not integrated. Relying solely on the filter cannot block the high-temperature melting sparks with a particle size of 0.5-3mm generated when cutting metal with a power of ≥1000W laser, which can easily cause burns or fires. In addition, small spatters can easily adhere to the surface of the filter, affecting the protective effect and causing damage. At the same time, the filter components are directly exposed to the cutting environment, making them susceptible to spark impact and high-temperature baking, which significantly shortens their service life.

[0006] To achieve the above objectives, the present invention proposes a laser cutting protective structure including a laser cutting head body, wherein an adjustable protective component is provided on the front side of the laser cutting head body. The adjustable protection component includes a servo motor embedded in the front top of the laser cutting head body. The output end of the servo motor is fixedly connected to a connecting plate. A fixing rod is bolted to the top of the connecting plate. An arc-shaped block is fixedly connected to the bottom of the fixing rod. The arc-shaped block is located in front of the servo motor. A pressing structure is provided on the front top of the laser cutting head body. The pressing structure is located in front of the arc-shaped block. A lifting structure is bolted to the front bottom of the fixing rod. An anti-splash filter structure is provided inside the lifting structure. The anti-splash filter structure is located in front of the laser cutting head body. The lifting structure, the pressing structure, and the servo motor are all externally connected to a PLC controller.

[0007] Preferably, the pressing structure includes a fixed plate fixedly connected to the front side of the top of the laser cutting head body, an electric push rod is bolted to the front side of the fixed plate, the telescopic end of the electric push rod passes through the front side of the fixed plate, and an arc-shaped pressure block is fixedly connected to the telescopic end of the electric push rod, the arc-shaped pressure block being located on the front side of the arc-shaped block.

[0008] Preferably, the lifting structure includes a gantry frame bolted to the bottom of a fixed rod, with lifting slots on both sides of the gantry frame, and lifting motors bolted to both sides of the top of the gantry frame. The lifting motors are externally connected to a PLC controller, and a lead screw is fixedly connected to the output end of the lifting motor. The lead screw is located inside the lifting slot, and a connecting block is slidably connected inside the lifting slot. The connecting block is threaded to the outside of the lead screw, and the inside of the connecting block is fixedly connected to the outside of the splash-proof filter structure.

[0009] Preferably, the splash-proof filter structure includes a protective shell fixedly connected to the inside of the connecting block. The interior of the protective shell is provided with a titanium alloy slag-blocking mesh, a transparent high-temperature resistant polycarbonate sheet, and a filter lens in sequence from back to front. The mesh size of the titanium alloy slag-blocking mesh is 1 mm.

[0010] Preferably, an arc-shaped groove is provided on the front side of the top of the laser cutting head body, and an arc block is slidably connected inside the arc-shaped groove, with the top of the arc block being fixedly connected to the bottom of the arc block.

[0011] Preferably, a pressing pad is adhered to the inner side of the arc-shaped pressure block, and the pressing pad is located on the front side of the arc-shaped block.

[0012] Preferably, the rear side of the compression pad has anti-slip texture, which is in the shape of a grid.

[0013] Preferably, brush sleeves are glued to both the top and bottom of the connecting block, and the brush sleeves are located on the outside of the lead screw.

[0014] In the technical solution of this utility model, by setting up a laser cutting head body and an adjustable protective component, the defects of the existing protective structure are specifically solved: the servo motor in the adjustable protective component can drive the connecting plate and the fixing rod to rotate the anti-splash filter structure, realizing dynamic adjustment of the protective position and angle, which can adapt to different cutting angles and workpiece sizes, covering the protection needs of operators from different positions. Regarding the problem that the lifting adjustment depends on manual operation, the lifting structure can automatically drive the anti-splash filter structure to lift and lower without manual operation. Moreover, the servo motor and the pressure-fixing structure are all connected to an external PLC controller to realize automated and precise control, improve the adjustment efficiency in high-power cutting operations, and eliminate the hidden danger of operation delay. Regarding the problem that the protective design is single and not integrated, the anti-splash filter structure can block high-temperature melting sparks, avoid the risk of burns and fire, and at the same time prevent small splashes from adhering to the filter component. Furthermore, the adjustable protective component integrates adjustment, lifting, and protection functions, reduces the direct exposure of the filter component, extends its service life, and improves the overall safety and practicality of laser cutting head protection. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the adjustable protection component structure according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the pressing structure according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the lifting structure according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of the anti-splash filter structure according to an embodiment of the present invention.

[0017] Reference numerals: 1. Laser cutting head body; 2. Adjustable protective assembly; 201. Servo motor; 202. Connecting plate; 203. Fixing rod; 204. Arc-shaped block; 205. Pressing structure; 2051. Fixed plate; 2052. Electric push rod; 2053. Arc-shaped pressure block; 206. Lifting structure; 2061. Gantry frame; 2062. Lifting groove; 2063. Lifting motor; 2064. Lead screw; 2065. Connecting block; 207. Anti-splash filter structure; 2071. Protective shell; 2072. Titanium alloy slag-blocking mesh; 2073. Transparent high-temperature resistant polycarbonate sheet; 2074. Filter lens; 3. Arc-shaped groove; 4. Arc block; 5. Pressing pad; 6. Brush sleeve.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0021] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0022] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] This utility model provides a laser cutting protective structure, aiming to solve the shortcomings of existing laser cutting head protective structures in several aspects that need improvement: First, the protective components lack flexibility in adjustment, and can only achieve fixed-position protection manually. It is impossible to dynamically adjust the protective position and angle according to the cutting angle and workpiece size, resulting in incomplete protection coverage for operators in different positions. Second, the lifting and adjustment rely on manual operation, making it difficult to achieve automated and precise control. In high-power cutting operations, not only is the adjustment efficiency low, but there are also safety hazards caused by operation delays. Third, the protective design is singular and not integrated. Relying solely on the filter cannot block the high-temperature melting sparks (over 1500℃, 0.5-3mm particle size) generated when cutting metal with a laser of power ≥1000W, which can easily cause burns or fires. Furthermore, small spatters can easily adhere to the surface of the filter, affecting the protective effect and causing damage. At the same time, the filter components are directly exposed to the cutting environment, making them susceptible to spark impact and high-temperature baking, which significantly shortens their service life.

[0024] like Figure 1-5 As shown, the embodiment of this utility model provides a laser cutting protective structure, including a laser cutting head body 1, and an adjustable protective component 2 is provided on the front side of the laser cutting head body 1. The adjustable protective component 2 includes a servo motor 201 embedded in the front top of the laser cutting head body 1. The output end of the servo motor 201 is fixedly connected to a connecting plate 202. A fixing rod 203 is bolted to the top of the connecting plate 202. An arc-shaped block 204 is fixedly connected to the bottom of the fixing rod 203. The arc-shaped block 204 is located in front of the servo motor 201. A pressing structure 205 is provided on the front top of the laser cutting head body 1. The pressing structure 205 is located in front of the arc-shaped block 204. A lifting structure 206 is bolted to the front bottom of the fixing rod 203. An anti-splash filter structure 207 is provided on the inner side of the lifting structure 206. The anti-splash filter structure 207 is located in front of the laser cutting head body 1. The lifting structure 206, the pressing structure 205, and the servo motor 201 are all externally connected to a PLC controller.

[0025] In this invention, by setting up a laser cutting head body 1 and an adjustable protective component 2, during operation, the PLC controller coordinates and controls the servo motor 201, the lifting structure 206, and the pressing structure 205 to operate in unison. When the protective angle needs to be adjusted to adapt to different cutting conditions, the PLC controller sends a command to start the servo motor 201. The output of the servo motor 201 drives the connecting plate 202 to rotate. The connecting plate 202, through the fixed rod 203, synchronously drives the lifting structure 206 and the anti-splash filter structure 207 to rotate, realizing the dynamic adjustment of the protective angle. At the same time, the arc-shaped block 204 rotates with the fixed rod 203, providing stable support for the angle adjustment. After the angle is adjusted to the correct position... The PLC controller activates the pressure-holding structure 205, which provides stable pressure to the arc-shaped block 204, ensuring a fixed protective angle and preventing displacement due to vibration during operation. When the protective height needs adjustment, the PLC controller sends a command to the lifting structure 206, driving the anti-splash filter structure 207 to precisely rise and fall along the lifting path, adapting to the cutting protection requirements of different workpieces. Throughout the process, the anti-splash filter structure 207 remains in front of the laser cutting head body 1, blocking high-temperature sparks while achieving the filtering function. All actions are automatically and collaboratively controlled by the PLC controller, requiring no manual intervention. This ensures comprehensive and stable protection while improving operational efficiency and safety.

[0026] Please refer to the following: Figure 3 The pressing structure 205 includes a fixed plate 2051 fixedly connected to the front side of the top of the laser cutting head body 1. An electric push rod 2052 is bolted to the front side of the fixed plate 2051. The telescopic end of the electric push rod 2052 passes through the front side of the fixed plate 2051. An arc-shaped pressing block 2053 is fixedly connected to the telescopic end of the electric push rod 2052. The arc-shaped pressing block 2053 is located in front of the arc-shaped block 204. In this embodiment, by setting a pressing structure 205, when the pressing structure 205 is working, the PLC controller sends a signal to the electric push rod 2052. The telescopic end of the electric push rod 2052 drives the arc-shaped pressing block 2053 to move towards the arc-shaped block 204 until the arc-shaped pressing block 2053 is in close contact with the front side of the arc-shaped block 204. The arc-shaped design of the arc-shaped pressing block 2053 can fit with the surface of the arc-shaped block 204, achieving large-area stable pressing. This avoids the arc-shaped block 204 from shifting due to equipment vibration after the servo motor 201 drives the fixed rod 203 to adjust the angle, ensuring that the protection angle of the splash-proof filter structure 207 is always accurate and ensuring stable protection effect.

[0027] For further information, please continue to refer to [link / reference]. Figure 4The lifting structure 206 includes a gantry frame 2061 bolted to the bottom of the fixed rod 203. Lifting slots 2062 are provided on both sides of the gantry frame 2061. Lifting motors 2063 are bolted to both sides of the top of the gantry frame 2061. The lifting motors 2063 are externally connected to a PLC controller. A lead screw 2064 is fixedly connected to the output end of the lifting motor 2063. The lead screw 2064 is located inside the lifting slot 2062. A connecting block 2065 is slidably connected inside the lifting slot 2062. The connecting block 2065 is threaded to the outside of the lead screw 2064. The inside of the connecting block 2065 is fixedly connected to the outside of the splash-proof filter structure 207. In this embodiment, by setting up a lifting structure 206, when the lifting structure 206 is running, the PLC controller controls the lifting motor 2063 to start. The output end of the lifting motor 2063 drives the lead screw 2064 to rotate in the lifting groove 2062. Since the connecting block 2065 is threadedly connected to the lead screw 2064 and is limited by the lifting groove 2062, the rotation of the lead screw 2064 will be converted into the linear movement of the connecting block 2065 along the lifting groove 2062. The connecting block 2065 then drives the inner anti-splash filter structure 207 to rise and fall synchronously. The symmetrical design of the lead screw 2064 and the connecting block 2065 on both sides can ensure that the anti-splash filter structure 207 is subjected to balanced force and has no tilt during the lifting process, accurately adapting to the cutting protection requirements of workpieces of different thicknesses, without the need for manual adjustment, thus improving operating efficiency.

[0028] Please continue to refer to this. Figure 5 The splash-proof filter structure 207 includes a protective shell 2071 fixedly connected to the inside of the connecting block 2065. The interior of the protective shell 2071 is provided with a titanium alloy slag-blocking mesh 2072, a transparent high-temperature resistant polycarbonate sheet 2073 and a filter lens 2074 arranged sequentially from back to front. The mesh size of the titanium alloy slag-blocking mesh 2072 is 1mm. In this embodiment, by setting up a splash-proof filter structure 207, when the splash-proof filter structure 207 is working, the protective shell 2071 provides fixed support for the internal three-layer structure. The high-temperature melting sparks (particle size 0.5-3mm) generated by laser cutting first come into contact with the titanium alloy slag-blocking mesh 2072. The 1mm aperture mesh can block most of the sparks, preventing them from directly impacting the subsequent structure. The small splashes are further intercepted by the transparent high-temperature resistant polycarbonate sheet 2073 (temperature range -40℃~130℃). At the same time, the sheet does not affect the operator's observation of the cutting area. Finally, the filter 2074 (compatible with 1064nm fiber laser) blocks and filters the laser to prevent laser damage to the operator's eyes. The three-layer structure works together to achieve an integrated protective effect of "spark interception + laser protection + visual observation".

[0029] Please refer to Figure 3An arc-shaped groove 3 is provided on the front side of the top of the laser cutting head body 1. An arc block 4 is slidably connected inside the arc-shaped groove 3, and the top of the arc block 4 is fixedly connected to the bottom of the arc block 204. In this embodiment, by setting the arc-shaped groove 3 and the arc block 4, when the servo motor 201 drives the connecting plate 202 and the fixing rod 203 to rotate the arc block 204 to adjust the protection angle, the arc block 4 at the bottom of the arc block 204 will slide synchronously along the arc-shaped groove 3 at the top of the laser cutting head body 1. The matching design of the arc-shaped groove 3 and the arc block 4 can limit and guide the rotation trajectory of the arc block 204, avoid the arc block 204 from deviating or getting stuck when rotating, and ensure that the angle adjustment of the fixing rod 203 and the subsequent anti-splash filter structure 207 is more stable and precise, thereby improving the overall operational stability of the structure.

[0030] Additionally, please refer to Figure 3 A pressing pad 5 is bonded to the inner side of the arc-shaped pressing block 2053, and the pressing pad 5 is located on the front side of the arc-shaped block 204. In this embodiment, by setting the pressing pad 5, when the arc-shaped pressing block 2053 presses against the arc-shaped block 204, the pressing pad 5 on the inner side of the arc-shaped pressing block 2053 directly contacts the surface of the arc-shaped block 204. The pressing pad 5 has a certain elasticity, which can fill the tiny gap between the arc-shaped pressing block 2053 and the arc-shaped block 204, making the two fit more tightly and improving the pressing stability. At the same time, the elastic material can avoid wear caused by hard contact between the arc-shaped pressing block 2053 and the arc-shaped block 204, extend the service life of both, and ensure that the long-term pressing effect does not diminish.

[0031] Additionally, please refer to Figure 3 The rear side of the clamping pad 5 is provided with anti-slip texture, which is in the shape of a grid. In this embodiment, by setting the clamping pad 5 and the grid-shaped anti-slip texture on the rear side of the clamping pad 5, the friction between the clamping pad 5 and the surface of the arc-shaped block 204 can be increased. When the arc-shaped pressure block 2053 presses the arc-shaped block 204 through the clamping pad 5, the anti-slip texture can effectively prevent relative sliding between the two due to equipment vibration, further strengthening the clamping and fixing effect, ensuring that the protection angle of the splash-proof filter structure 207 remains stable during the cutting operation, and avoiding protection failure due to sliding.

[0032] Additionally, please refer to Figure 4 Brush sleeves 6 are adhered to both the top and bottom of the connecting block 2065, and the brush sleeves 6 are located on the outside of the lead screw 2064. In this embodiment, by setting the brush sleeves 6, when the connecting block 2065 moves up and down along the lifting groove 2062, the brush sleeves 6 at its top and bottom will slide synchronously along the outside of the lead screw 2064. The brush sleeves 6 can clean the cutting dust, metal shavings and other impurities attached to the surface of the lead screw 2064 in real time, preventing impurities from entering the threaded joint between the lead screw 2064 and the connecting block 2065, avoiding impurities causing the lead screw 2064 to jam or wear, ensuring smooth rotation of the lead screw 2064, ensuring the adjustment accuracy and service life of the lifting structure 206, and reducing the maintenance frequency.

[0033] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the concept of the present utility model and using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present utility model.

Claims

1. A laser cutting protective structure, characterized in that, The laser cutting protective structure includes a laser cutting head body (1), and an adjustable protective component (2) is provided on the front side of the laser cutting head body (1). The adjustable protective component (2) includes a servo motor (201) embedded in the front top of the laser cutting head body (1). The output end of the servo motor (201) is fixedly connected to a connecting plate (202). A fixing rod (203) is bolted to the top of the connecting plate (202). An arc-shaped block (204) is fixedly connected to the bottom of the fixing rod (203). The arc-shaped block (204) is located in front of the servo motor (201). A pressure-fixing structure (205) is provided, which is located on the front side of the arc-shaped block (204). A lifting structure (206) is bolted to the front side of the bottom of the fixing rod (203). An anti-splash filter structure (207) is provided on the inner side of the lifting structure (206), which is located on the front side of the laser cutting head body (1). The lifting structure (206), the pressure-fixing structure (205), and the servo motor (201) are all externally connected to a PLC controller.

2. The laser cutting protective structure according to claim 1, characterized in that, The pressing structure (205) includes a fixed plate (2051) fixedly connected to the front side of the top of the laser cutting head body (1). An electric push rod (2052) is bolted to the front side of the fixed plate (2051). The telescopic end of the electric push rod (2052) passes through the front side of the fixed plate (2051). An arc-shaped pressure block (2053) is fixedly connected to the telescopic end of the electric push rod (2052). The arc-shaped pressure block (2053) is located in front of the arc-shaped block (204).

3. The laser cutting protective structure according to claim 1, characterized in that, The lifting structure (206) includes a gantry frame (2061) bolted to the bottom of the fixed rod (203). Lifting slots (2062) are provided on both sides of the gantry frame (2061). Lifting motors (2063) are bolted to both sides of the top of the gantry frame (2061). The lifting motors (2063) are externally connected to a PLC controller. A lead screw (2064) is fixedly connected to the output end of the lifting motors (2063). The lead screw (2064) is located inside the lifting slots (2062). A connecting block (2065) is slidably connected inside the lifting slots (2062). The connecting block (2065) is threaded to the outside of the lead screw (2064). The inside of the connecting block (2065) is fixedly connected to the outside of the splash-proof filter structure (207).

4. The laser cutting protective structure according to claim 1, characterized in that, The splash-proof filter structure (207) includes a protective shell (2071) fixedly connected to the inside of the connecting block (2065). The protective shell (2071) is provided with a titanium alloy slag-blocking mesh (2072), a transparent high-temperature resistant polycarbonate sheet (2073) and a filter (2074) arranged sequentially from back to front inside. The titanium alloy slag-blocking mesh (2072) has a mesh size of 1 mm.

5. The laser cutting protective structure according to claim 1, characterized in that, The laser cutting head body (1) has an arc-shaped groove (3) on the front side of the top, and an arc block (4) is slidably connected inside the arc-shaped groove (3). The top of the arc block (4) is fixedly connected to the bottom of the arc block (204).

6. The laser cutting protective structure according to claim 2, characterized in that, A pressing pad (5) is bonded to the inner side of the arc-shaped pressure block (2053), and the pressing pad (5) is located on the front side of the arc-shaped block (204).

7. The laser cutting protective structure according to claim 6, characterized in that, The rear side of the compression pad (5) is provided with anti-slip texture, which is in the shape of a grid.

8. The laser cutting protective structure according to claim 3, characterized in that, The top and bottom of the connecting block (2065) are both glued with brush sleeves (6), which are located on the outside of the lead screw (2064).

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