A laser marking production device for processing steel parts of a tower

Abstract

The application belongs to the technical field of laser processing, and particularly relates to a laser marking production device for iron tower steel part processing, which comprises a laser marking equipment main body, a laser head is arranged on the laser marking equipment main body, an annular outer pipe with the same center is movably arranged on the outer side of the laser head, the annular outer pipe is fixed to the outer side of the laser head through a height adjusting assembly, a plurality of inner nozzles in annular array are fixedly connected to the position of the bottom end of the annular outer pipe towards the center of the annular outer pipe, a plurality of middle nozzles in annular array are fixedly connected to the middle part of the bottom end of the annular outer pipe, and a plurality of outer nozzles in annular array are fixedly connected to the position of the bottom end of the annular outer pipe away from the center of the annular outer pipe. When the gas curtain form is switched, the nitrogen flow is synchronously adjusted through the manual switching structure, the flow is smaller when the marking range is smaller, gas waste is avoided, and the gas curtain protection strength is matched with the marking range.

Description

Technical Field

[0001] This invention belongs to the field of laser processing technology, specifically relating to a laser marking production device for processing steel components of iron towers. Background Technology

[0002] Laser marking technology, due to its advantages such as permanent marking, high precision, and high speed, has been widely used in the marking of steel components for iron towers to trace component information, such as model, batch, and manufacturer. However, in actual production processes, especially in the processing environment of large outdoor iron tower steel, existing laser marking technology still faces several technical challenges that urgently need to be addressed, seriously affecting marking quality, production efficiency, and operating costs.

[0003] The existing laser marking process for steel components of iron towers has the following problems: the smoke and dust generated during laser marking easily interfere with the marking accuracy, and materials such as carbon steel are easily oxidized when in contact with air, resulting in dark marking marks with low contrast; the coverage area of ​​traditional air curtain devices is fixed and cannot be adapted to marking areas of different sizes, easily causing waste of inert gases such as nitrogen; for steel components with concave or convex surfaces, the height of the air curtain is difficult to adjust flexibly, resulting in poor protective effect; the switching of air curtain mode and the adjustment of gas flow rate need to be operated separately, which is not convenient to use and is prone to mismatch between flow rate and air curtain requirements. Therefore, a laser marking production device for processing steel components of iron towers is provided.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a laser marking production device for processing steel components of iron towers, so as to solve the problems of the prior art.

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

[0007] A laser marking production device for processing steel components of iron towers includes a main body of laser marking equipment, on which a laser head is mounted. An annular outer tube with the same center is movably sleeved on the outer side of the laser head. The annular outer tube is fixed to the outer side of the laser head by a height adjustment component. Several inner nozzles arranged in annular arrays are fixedly connected to the bottom end of the annular outer tube at a position facing the center of the annular outer tube. Several middle nozzles arranged in annular arrays are fixedly connected to the middle part of the bottom end of the annular outer tube. Several outer nozzles arranged in annular arrays are fixedly connected to the bottom end of the annular outer tube at a position away from the center of the annular outer tube. A flow control component is fixedly connected to the middle part of the annular outer tube away from the front side of the laser head. A switching adjustment component is connected between the flow control component and the annular outer tube. An elastic locking component is connected between the switching adjustment component and the annular outer tube.

[0008] Preferably, the central nozzle is vertically distributed between the central nozzle and the annular outer tube, the inner nozzle and the outer nozzle are respectively inclined, each central nozzle is located in the middle position between each two adjacent inner nozzles, and each outer nozzle is located in the middle position between each two adjacent central nozzles, and the number of inner nozzles, outer nozzles and central nozzles are twenty.

[0009] Preferably, the height adjustment assembly includes a guide sleeve fixed to the middle of the front sidewall of the laser head by screws. A first guide rod with a convex cross-section is movably inserted into the guide sleeve. Two symmetrically arranged guide sleeves are also fixed to the rear sidewall of the laser head. A second guide rod with a convex cross-section is movably inserted into each of the two guide sleeves. The bottom ends of the two second guide rods and the first guide rod are fixed to the top of the annular outer tube. A manual locking structure is connected between the first guide rod and its corresponding guide sleeve. The manual locking structure includes a hollow groove through the middle of the first guide rod. A hand-tightening screw is movably inserted into the hollow groove. The inner end of the hand-tightening screw is threaded into a screw hole on the inner sidewall of the guide sleeve. The inner side of the outer end of the hand-tightening screw is pressed against the outer surface of the guide sleeve.

[0010] Preferably, the flow control component includes an exhaust pipe fixedly connected to the middle of the outer arc wall of the annular outer tube away from the front side of the laser head. One end of the exhaust pipe is connected to the interior of the annular outer tube, and the other end is fixedly connected to a cross-shaped valve housing. An intake pipe is fixedly connected to one end of the cross-shaped valve housing away from the exhaust pipe, and a lifting and blocking structure is installed inside the cross-shaped valve housing.

[0011] Preferably, the lifting and blocking structure includes a valve plug that slides inside the cross-shaped valve housing. Two symmetrically arranged key bars are fixed to the outer wall of the valve plug. The key bars slide in the keyway opened in the inner wall of the cross-shaped valve housing. A threaded channel is opened at the center of the top of the valve plug. A stud is threadedly connected to the threaded channel. The top of the stud is rotatably connected to the center of the top of the cross-shaped valve housing and is connected to the switching adjustment assembly on the outside of its top extension. The other end of the air inlet pipe is connected to an external nitrogen supply device through a hose.

[0012] Preferably, the switching adjustment component includes an annular inner tube that slides inside the annular outer tube. The bottom of the annular inner tube has a plurality of central alignment holes arranged in a circular array at its center. The bottom of the annular inner tube has a plurality of inner alignment holes arranged in a circular array at its center. The bottom of the annular inner tube has a plurality of outer alignment holes arranged in a circular array at its center away from its center. The number of inner alignment holes, outer alignment holes, and central alignment holes is twenty. The inclination angle of the inner alignment holes is the same as the inclination angle of the inner nozzle, and the inclination angle of the outer nozzle is the same as the inclination angle of the outer alignment holes.

[0013] Preferably, a first arc-shaped channel is provided on the annular inner tube at a position away from the front side of the laser head. The first arc-shaped channel is movably sleeved on the outside of the air outlet pipe. The vertical distance between the top wall and the bottom wall of the first arc-shaped channel is equal to the outer diameter of the air outlet pipe. A manual switching structure is connected between the left side of the top end of the annular inner tube and the middle part of the left side of the top end of the annular outer tube. The manual switching structure is also connected to the top extension of the stud.

[0014] Preferably, the manual switching structure includes a second arc-shaped channel opened on the left side of the top end of the annular outer tube. An operating column slides within the second arc-shaped channel. The bottom end of the operating column is fixed to the left side of the top end of the annular inner tube. A transmission rod is fixed to the outside of the operating column. The transmission rod is integrally formed by an L-shaped rod and an arc-shaped rod. Multiple teeth arranged in an array along the arc-shaped rod are fixed to the outside of the arc-shaped rod near the stud. The arc-shaped rod is connected to the outside of a gear through the meshing of the multiple teeth. The mounting shaft hole of the gear is fixed to the outside of the top extension of the stud. The outer diameter of the operating column is equal to the inner width of the second arc-shaped channel.

[0015] Preferably, the elastic locking member includes an arc-shaped outer plate on the left side of the operating column and fixed to the left side of the top of the annular outer tube. Both ends of the arc-shaped outer plate are integrally formed with a stop plate with the same arc-shaped structure on the transverse surface through V-shaped plates. The two V-shaped plates are symmetrically arranged. The middle of the two V-shaped plates is bent to provide a first weakening part. The two connecting bends on the two V-shaped plates that are connected to the arc-shaped outer plate are provided with a second weakening part. The two connecting bends on the two V-shaped plates that are connected to the stop plate are also provided with a second weakening part. The front arc surface of the stop plate is provided with a locking structure.

[0016] Preferably, the locking structure includes multiple arc-shaped limiting parts arranged in an array along the front arc surface of the stop plate. Each arc-shaped limiting part has a rubber pad fixed to its inner wall. At the connection between every two adjacent arc-shaped limiting parts, two arc-shaped chamfers are symmetrically provided. The number of arc-shaped limiting parts is four.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The laser marking production device for processing steel components of iron towers of the present invention is adaptable to marking needs in multiple scenarios. By switching between three types of nozzles—inner, middle, and outer—it forms three air curtain shapes: inverted frustum, cylindrical, and frustum, corresponding to small, medium, and large marking ranges, respectively. It can meet the marking and protection needs of steel components of different specifications without changing the device.

[0019] The air curtain can effectively isolate the air, prevent the oxidation of materials such as carbon steel, and produce a clear, uniform, high-contrast mark in silver-white color; at the same time, it disperses the marking dust, reduces interference with the laser spot, and ensures marking accuracy.

[0020] When switching the air curtain mode, the nitrogen flow rate is adjusted synchronously by manually switching the structure. The smaller the marking range, the smaller the flow rate, to avoid gas waste and ensure that the air curtain protection strength matches the marking range.

[0021] The height adjustment component can flexibly adjust the height of the annular outer tube, and can accurately match the height of the laser head for steel parts with concave or convex surfaces, ensuring the air curtain coverage effect.

[0022] The elastic locking component, through the cooperation of the arc-shaped limiting part and the rubber pad, fixes the position of the operating column, prevents displacement during use, and ensures the stability of the air curtain shape and nitrogen flow rate. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional first-view structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the overall three-dimensional second-view structure of the present invention;

[0025] Figure 3 This is a three-dimensional first-view structural diagram of each component on the annular outer tube of the present invention;

[0026] Figure 4 This is a three-dimensional second-view structural diagram of each component on the annular outer tube of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of each component on the annular outer tube of the present invention from a side view.

[0028] Figure 6 This is a schematic diagram of the annular inner tube structure after the components on the annular outer tube of the present invention are inverted and cut open.

[0029] Figure 7 This is a schematic diagram of the unfolded structure of the internal components of the cross-shaped valve housing of the present invention;

[0030] Figure 8 This is the present invention. Figure 1 Enlarged structural diagram at point A in the diagram;

[0031] Figure 9 This is the present invention. Figure 3 A schematic diagram of the enlarged junction structure at point B;

[0032] Explanation of key figure labels:

[0033] 1. Main body of laser marking equipment; 11. Laser head; 12. Annular outer tube; 121. Inner nozzle; 122. Central nozzle; 123. Outer nozzle; 13. Air outlet pipe; 14. Cross-shaped valve housing; 141. Valve plug; 142. Key bar; 1421. Keyway; 143. Stud; 15. Air inlet pipe; 16. First guide rod; 161. Guide sleeve; 162. Hollow groove; 163. Hand-tightening screw; 164. Second guide rod; 3. Switching adjustment assembly; 31. Annular inner tube; 32. Inner alignment hole; 33. Middle alignment hole; 34. Outer alignment hole; 35. First arc-shaped channel; 36. Operating column; 37. Transmission rod; 38. Tooth; 39. Gear; 310. Second arc-shaped channel; 4. Elastic locking element; 41. Arc-shaped outer plate; 42. V-shaped plate; 421. First weakening part; 422. Second weakening part; 43. Stop plate; 431. Arc-shaped limiting part; 432. Rubber pad; 433. Arc-shaped chamfer. Detailed Implementation

[0034] The technical solution of this invention patent will be clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this invention.

[0035] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] See attached document Figure 1-9 A laser marking production device for processing steel components of iron towers includes a laser marking equipment body 1, a laser head 11 mounted on the laser marking equipment body 1, an annular outer tube 12 with the same center movably sleeved on the outer side of the laser head 11, the annular outer tube 12 being fixed to the outer side of the laser head 11 by a height adjustment component, a plurality of annular arrayed inner nozzles 121 being fixedly connected to the bottom end of the annular outer tube 12 at a position facing the center of the annular outer tube 12, a plurality of annular arrayed middle nozzles 122 being fixedly connected to the middle part of the bottom end of the annular outer tube 12, a plurality of annular arrayed outer nozzles 123 being fixedly connected to the bottom end of the annular outer tube 12 at a position away from the center of the annular outer tube 12, a flow control component being fixedly connected to the middle part of the annular outer tube 12 away from the front side of the laser head 11, a switching adjustment component 3 being connected between the flow control component and the annular outer tube 12, and an elastic locking component 4 being connected between the switching adjustment component 3 and the annular outer tube 12.

[0038] It is worth noting that the height adjustment component can adjust the height of the annular outer tube 12 during use, especially for marking steel parts with concave or convex parts on the surface. When the height of the laser head 11 is adjusted by the external lifting structure, the height of its annular outer tube 12 also needs to be adjusted accordingly according to its actual use.

[0039] The arrangement of the annular outer tube 12 and its inner nozzles 121, middle nozzles 122, and outer nozzles 123 is to enable nitrogen gas to enter the annular outer tube 12 and then switch between being ejected from multiple inner nozzles 121, multiple middle nozzles 122, and multiple outer nozzles 123. When ejected from multiple inner nozzles 121, an annular gas curtain with an inverted frustum structure is formed; when ejected from multiple middle nozzles 122, a cylindrical annular gas curtain is formed; and when ejected from multiple outer nozzles 123, a frustum structure annular gas curtain is formed. The function of forming the gas curtain is to effectively form a barrier around the laser spot, isolate the air, and disperse the smoke and dust, providing good protection.

[0040] When marking carbon steel tower components, the annular air curtain effectively isolates oxygen by injecting inert gases such as nitrogen or argon, thereby creating clear, uniform, and high-contrast silver-white marks on the steel and improving the marking quality.

[0041] Furthermore, such as Figure 1-9 As shown, the central nozzle 122 is vertically distributed with respect to the annular outer tube 12, and the inner nozzle 121 and outer nozzle 123 are respectively inclined. Each central nozzle 122 is located in the middle position between each two adjacent inner nozzles 121, and each outer nozzle 123 is located in the middle position between each two adjacent central nozzles 122. The number of inner nozzles 121, outer nozzles 123 and central nozzles 122 are twenty.

[0042] It is worth noting that the straight-line distance between the center of the bottom outlet of the central nozzle 122 and the center of the annular outer tube 12 is equal to the straight-line distance between the center of the bottom opening of the central alignment hole 33 and the center of the annular outer tube 12. This causes the multiple central alignment holes 33 of the annular inner tube 31 to coincide with and align with the top of the central nozzle 122 when the annular inner tube 31 rotates inside the annular outer tube 12.

[0043] Furthermore, such as Figure 1-9 As shown, the height adjustment assembly includes a guide sleeve 161 fixed to the middle of the front sidewall of the laser head 11 by screws. A first guide rod 16 with a convex cross-section is movably inserted into the guide sleeve 161. Two symmetrically arranged guide sleeves 161 are also fixed to the rear sidewall of the laser head 11. A second guide rod 164 with a convex cross-section is movably inserted into each of the two guide sleeves 161. The bottom ends of the two second guide rods 164 and the first guide rod 16 are fixed to the top of the annular outer tube 12. A manual locking structure is connected between the first guide rod 16 and its corresponding guide sleeve 161. The manual locking structure includes a hollow groove 162 through the middle of the first guide rod 16. A hand screw 163 is movably inserted into the hollow groove 162. The inner end of the hand screw 163 is threaded into a screw hole opened in the inner sidewall of the guide sleeve 161. The inner side of the outer end of the hand screw 163 is pressed against the outer surface of the guide sleeve 161.

[0044] It is worth noting that when the height of the annular outer tube 12 needs to be adjusted, the hand screw 163 can be loosened to cause the inner side of the outer end of the hand screw 163 to release its pressure on the outer surface of the guide sleeve 161. In this way, the height of the annular outer tube 12 can be adjusted through the sliding cooperation between the second guide rod 164, the first guide rod 16, and the guide sleeve 161.

[0045] Furthermore, such as Figure 1-9 As shown, the flow control assembly includes an outlet pipe 13 fixedly connected to the middle of the outer arc wall of the annular outer tube 12 away from the front side of the laser head 11. One end of the outlet pipe 13 is connected to the inside of the annular outer tube 12, and the other end is fixedly connected to a cross-shaped valve housing 14. An inlet pipe 15 is fixedly connected to the end of the cross-shaped valve housing 14 away from the outlet pipe 13. A lifting and blocking structure is installed inside the cross-shaped valve housing 14. The lifting and blocking structure includes a valve plug 141 that slides inside the cross-shaped valve housing 14. Two symmetrically arranged key bars 142 are fixedly connected to the outer wall of the valve plug 141. The key bars 142 slide in the keyway 1421 opened in the inner wall of the cross-shaped valve housing 14. A threaded channel is opened at the center of the top of the valve plug 141. A stud 143 is threadedly connected in the threaded channel. The top of the stud 143 is rotatably connected to the center of the top of the cross-shaped valve housing 14, and is connected to the switching adjustment assembly 3 on the outside of its top extension. The other end of the inlet pipe 15 is connected to an external nitrogen supply device through a hose.

[0046] It is worth noting that when the gear 39 fixed to the top of the stud 143 is driven by the multiple teeth 38 fixed to the outer side of the arc-shaped rod, the gear 39 drives the stud 143 as shown in the attached figure. Figure 4 As shown, the screw 143 is rotated clockwise, and the bottom end of the stud 143 is threadedly connected to the threaded channel at the top of the valve plug 141. This causes the valve plug 141 to move upward in conjunction with the key bar 142, and the bottom end of the valve plug 141 opens the internal transverse channel of the cross-shaped valve body 14 to a certain size. This size is at the minimum flow rate because the multiple inner alignment holes 32 are inclined towards the center of the annular outer tube 12. Since the number of nozzles remains unchanged, their angle changes, so the nitrogen supply flow rate can be reduced to prevent excessive flow and waste.

[0047] Furthermore, such as Figure 1-9As shown, the switching adjustment component 3 includes an annular inner tube 31 that slides inside the annular outer tube 12. Several central alignment holes 33 arranged in a ring array are opened at the bottom center of the annular inner tube 31. Several inner alignment holes 32 arranged in a ring array are opened at the bottom of the annular inner tube 31 facing the center of the annular inner tube 31. Several outer alignment holes 34 arranged in a ring array are opened at the bottom of the annular inner tube 31 away from the center of the annular inner tube 31. The number of inner alignment holes 32, outer alignment holes 34, and central alignment holes 33 are all twenty. The inclination angle of the inner alignment holes 32 is the same as the inclination angle of the inner nozzle 121, and the inclination angle of the outer nozzle 123 is the same as the inclination angle of the outer alignment holes 34. A first arc-shaped channel 35 is opened on the annular inner tube 31 away from the front side of the laser head 11. The first arc-shaped channel 35 is movably sleeved on the outside of the exhaust pipe 13. The inner top wall and inner bottom of the first arc-shaped channel 35... The vertical distance between the walls is equal to the outer diameter of the vent pipe 13. A manual switching structure is connected between the top left of the annular inner tube 31 and the middle of the top left of the annular outer tube 12. The manual switching structure is also connected to the top extension of the stud 143. The manual switching structure includes a second arc-shaped channel 310 opened on the top left of the annular outer tube 12. An operating column 36 slides in the second arc-shaped channel 310. The bottom end of the operating column 36 is fixed to the top left of the annular inner tube 31. A transmission rod 37 is fixed to the outside of the operating column 36. The transmission rod 37 is integrally formed by an L-shaped rod and an arc-shaped rod. Multiple teeth 38 arranged along the arc-shaped rod array are fixed to the outside of the arc-shaped rod near the stud 143. The arc-shaped rod is connected to the outside of the gear 39 through the meshing of multiple teeth 38. The mounting shaft hole of the gear 39 is fixed to the outside of the top extension of the stud 143. The outer diameter of the operating column 36 is equal to the inner width of the second arc-shaped channel 310.

[0048] It is worth noting that the tilt angle of the inner alignment hole 32 and the tilt angle of the inner nozzle 121 can be customized according to the actual situation;

[0049] As attached Figure 6 The inner alignment hole 32, the middle alignment hole 33, and the outer alignment hole 34 marked as shown are attached together. Figure 6 When the annular inner tube 31 shown rotates clockwise by one forward position, its multiple inner alignment holes 32 respectively coincide with the top ends of multiple inner nozzles 121, and the multiple middle alignment holes 33 and multiple outer alignment holes 34 also rotate clockwise by one forward position, as shown in the attached figure. Figure 9 The operating column 36 shown moves away from the gear 39 within the second arc-shaped channel 310, and with the assistance of the elastic locking member 4, it can enter the next arc-shaped limiting part 431, at which point the central alignment hole 33 is attached. Figure 6 The part shown needs to advance two more positions to align with the corresponding central nozzle 122, while the outer alignment hole 34 is attached... Figure 6 Three more advance positions are needed to make the corresponding outer nozzle 123 coincide;

[0050] Appendix Figure 9 In the initial state, the operating column 36 is located in the first arc-shaped limiting part 431 near the gear 39. At this time, the inner nozzle 121 and the inner alignment hole 32 do not coincide, the outer nozzle 123 and the outer alignment hole 34 do not coincide, and the middle alignment hole 33 and the middle nozzle 122 do not coincide. After that, the inner alignment hole 32 needs to rotate 4.5° with the annular inner tube 31 to coincide with each inner nozzle 121. The multiple middle nozzles 122 do not coincide with the multiple middle alignment holes 33, the multiple outer nozzles 123 do not coincide with the multiple outer alignment holes 34, and the multiple inner nozzles 121 work to form an annular air curtain inclined to the workpiece table. The annular air curtain has an inverted frustum structure so as to form an air curtain when marking a small area on the surface of the steel parts, avoiding the waste of nitrogen due to the excessive air curtain range.

[0051] When marking is required on a medium-sized area of ​​a steel component, as shown in the attached document... Figure 6 As shown, the annular inner tube 31 can be manually rotated 9 degrees clockwise inside the annular outer tube 12, which causes each central alignment hole 33 to coincide with each central nozzle 122, while the inner alignment hole 32 is offset from the inner nozzle 121 and the outer alignment hole 34 is offset from the outer nozzle 123. As a result, nitrogen gas is sprayed vertically downward from multiple central nozzles 122 to form an annular air curtain perpendicular to the mirror surface. This annular air curtain has a cylindrical structure, which makes it easy to mark medium-sized areas on steel components.

[0052] When marking is required on a large area of ​​steel components, such as... Figure 6 As shown, the annular inner tube 31 can be manually operated to rotate 13.5 degrees clockwise inside the annular outer tube 12. This causes each outer alignment hole 34 to coincide with the outer nozzle 123, while the inner alignment holes 32 are offset from the inner nozzle 121, and the middle nozzle 122 is offset from the middle alignment hole 33. This facilitates the formation of an annular air curtain with a frustum-shaped structure, which in turn facilitates marking on a large area of ​​steel components.

[0053] Furthermore, such as Figure 1-9As shown, the elastic locking element 4 includes an arc-shaped outer plate 41 fixed to the left side of the operating column 36 and at the top left position of the annular outer tube 12. Both ends of the arc-shaped outer plate 41 are integrally formed with a stop plate 43 with the same arc-shaped structure on the transverse surface through V-shaped plates 42. The two V-shaped plates 42 are symmetrically arranged. The middle of the two V-shaped plates 42 is bent to provide a first weakening part 421. The two connecting bends on the two V-shaped plates 42 that connect to the arc-shaped outer plate 41 are provided with a second weakening part 422. The two connecting bends on the two V-shaped plates 42 that are connected to the stop plate 43 are also provided with a second weakening part 422. The front arc surface of the stop plate 43 is provided with a locking structure. The locking structure includes multiple arc-shaped limiting parts 431 arranged in an array along the front arc surface of the stop plate 43. The inner wall of each arc-shaped limiting part 431 is fixed with a rubber pad 432. At the connection of each pair of adjacent arc-shaped limiting parts 431, two arc-shaped chamfers 433 are symmetrically provided. The number of arc-shaped limiting parts 431 is four.

[0054] Appendix Figure 9 As shown, the operating column 36 is manually moved away from the gear 39. When the operating column 36 enters the second arc-shaped limiting part 431, its inner alignment holes 32 all coincide with the inner nozzle 121, while the other two alignment holes do not coincide. At the same time, the operating column 36 drives the multiple teeth 38 fixed on the transmission rod 37 to move and transmits the gear 39. The stud 143 is threadedly connected to the valve plug 141, thereby causing the valve plug 141 to move up to a fixed height and causing the central channel of the cross-shaped valve body 14 to open to a certain size.

[0055] When the operating column 36 enters the third arc-shaped limiting part 431, the middle alignment hole 33 coincides with the middle nozzle 122, while the other two alignment holes do not coincide. Simultaneously, the multiple teeth 38 fixed on the transmission rod 37 transmit the transmission to the gear 39, thereby causing the valve plug 141 to move up a fixed height, thus increasing the nitrogen supply.

[0056] When the operating column 36 enters the fourth arc-shaped limiting part 431, its external alignment holes all coincide with the external nozzle 123, while the other two alignment holes do not coincide. At the same time, the multiple teeth 38 fixed on the transmission rod 37 transmit the transmission to the gear 39, thereby causing the valve plug 141 to move up a fixed height, thereby further increasing the nitrogen supply.

[0057] The above actions are to simultaneously adjust the flow of nitrogen supply while the annular air curtain changes shape, so as to avoid excessive nitrogen waste and prevent the protective effect of the annular air curtain from deteriorating due to an excessively large marking range and a constant nitrogen supply rate.

[0058] The curved chamfer 433 is designed so that when the operating column 36 is moved, the curved chamfer 433 can be used to smoothly compress the stop plate 43. The stop plate 43, in conjunction with the deformation of the first weakening part 421 and the second weakening part 422 on the V-shaped plate 42 and its connection, can form a rebound. This allows the four curved limiting parts 431 on the stop plate 43 to increase the stability between them and the operating column 36 through the cooperation of the rubber pads 432, thus preventing the displacement of the operating column 36 from affecting the state of its annular air curtain and the stability of the nitrogen supply flow rate.

[0059] In actual use, depending on the surface morphology of the steel components of the tower, loosen the hand screw 163, and adjust the height of the annular outer tube 12 through the sliding cooperation of the first guide rod 16, the second guide rod 164 and the guide sleeve 161 to match the marking height of the laser head 11. After adjustment, tighten the hand screw 163 to fix it.

[0060] Next, by manually pushing the operating column 36 to slide within the second arc-shaped channel 310, the annular inner tube 31 is driven to rotate within the annular outer tube 12, thereby achieving the overlap of different alignment holes and nozzles:

[0061] Then, push the operating column 36 to the corresponding arc-shaped limiting part 431, the inner alignment hole 32 coincides with the inner nozzle 121, forming an inverted frustum-shaped air curtain to mark a small area, and simultaneously drive the stud 143 to rotate through the transmission rod 37, teeth 38, and gear 39, and the valve plug 141 moves up to the minimum flow position.

[0062] Continue pushing the operating column 36 until the middle alignment hole 33 coincides with the middle nozzle 122, forming a cylindrical gas curtain to mark the medium range. The valve plug 141 moves further upward to increase the nitrogen flow rate.

[0063] Push the operating column 36 to the farthest end, and the outer alignment hole 34 coincides with the outer nozzle 123 to form a frustum-shaped air curtain to handle large-area marking. The valve plug 141 moves to the maximum stroke, and the nitrogen flow reaches the maximum.

[0064] Finally, the external nitrogen supply equipment supplies gas to the cross-shaped valve housing 14 through the inlet pipe 15, and the gas enters the annular outer pipe 12 through the outlet pipe 13. It is then sprayed out from the overlapping nozzles to form a stable gas curtain. The laser head 11 starts marking. The gas curtain isolates the air and disperses the smoke and dust, completing high-quality marking. Furthermore, the V-shaped plate of the elastic locking member 4 rebounds through the deformation of the first weakening part 421 and the second weakening part 422, causing the arc-shaped limiting part 431 to clamp the operating column 36 through the rubber pad 432, preventing its accidental displacement and ensuring the stability of the gas curtain shape and flow rate during the marking process.

[0065] The foregoing description of specific exemplary embodiments of the invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the claims and their equivalents.

Claims

1. A laser marking production device for processing steel parts of a tower, comprising a laser marking equipment main body, a laser head is installed on the laser marking equipment main body, characterized in that, The laser head is movably fitted with an annular outer tube with the same center. The annular outer tube is fixed to the outside of the laser head by a height adjustment component. Several inner nozzles arranged in an annular array are fixedly connected to the bottom end of the annular outer tube at a position facing the center of the annular outer tube. Several middle nozzles arranged in an annular array are fixedly connected to the middle part of the bottom end of the annular outer tube. Several outer nozzles arranged in an annular array are fixedly connected to the bottom end of the annular outer tube at a position away from the center of the annular outer tube. A flow control component is fixedly connected to the middle part of the annular outer tube away from the front side of the laser head. A switching adjustment component is connected between the flow control component and the annular outer tube. An elastic locking component is connected between the switching adjustment component and the annular outer tube. The switching adjustment assembly includes an annular inner tube that slides inside the annular outer tube. The bottom end of the annular inner tube has a plurality of central alignment holes arranged in a ring array. The bottom end of the annular inner tube has a plurality of inner alignment holes arranged in a ring array at a position facing the center of the annular inner tube. The bottom end of the annular inner tube has a plurality of outer alignment holes arranged in a ring array at a position away from the center of the annular inner tube. The number of inner alignment holes, outer alignment holes, and central alignment holes is twenty.

2. The laser marking production device for processing steel parts of a tower according to claim 1, characterized in that, The central nozzle is vertically distributed between the central nozzle and the annular outer tube. The inner nozzle and the outer nozzle are respectively inclined. Each central nozzle is located in the middle between two adjacent inner nozzles, and each outer nozzle is located in the middle between two adjacent central nozzles. The number of inner nozzles, outer nozzles and central nozzles are twenty.

3. The laser marking production device for processing steel parts of a tower according to claim 1, characterized in that, The height adjustment assembly includes a guide sleeve fixed to the middle of the front sidewall of the laser head by screws. A first guide rod with a convex cross-section is movably inserted into the guide sleeve. Two symmetrically arranged guide sleeves are also fixed to the rear sidewall of the laser head. A second guide rod with a convex cross-section is movably inserted into each of the two guide sleeves. The bottom ends of the two second guide rods and the first guide rod are fixed to the top of the annular outer tube. A manual locking structure connects the first guide rod and its corresponding guide sleeve.

4. The laser marking production device for processing steel parts of a tower according to claim 1, characterized in that, The flow control component includes an outlet pipe fixedly connected to the middle of the outer arc wall of the annular outer tube away from the front side of the laser head. One end of the outlet pipe is connected to the inside of the annular outer tube, and the other end is fixedly connected to a cross-shaped valve housing. An inlet pipe is fixedly connected to the end of the cross-shaped valve housing away from the outlet pipe. A lifting and blocking structure is installed inside the cross-shaped valve housing.

5. The laser marking apparatus for processing steel parts of a tower according to claim 4, characterized in that, The lifting and blocking structure includes a valve plug that slides inside the cross-shaped valve housing. Two symmetrically arranged key bars are fixed to the outer wall of the valve plug. The key bars slide in the keyway opened in the inner wall of the cross-shaped valve housing. A threaded channel is opened at the center of the top of the valve plug. A stud is threadedly connected in the threaded channel. The top of the stud is rotatably connected to the center of the top of the cross-shaped valve housing and is connected to the switching adjustment assembly on the outside of its top extension.

6. The laser marking apparatus for processing steel parts of a tower according to claim 5, characterized in that, A first arc-shaped channel is provided on the annular inner tube away from the front side of the laser head. The first arc-shaped channel is movably sleeved on the outside of the air outlet pipe. The vertical distance between the top wall and the bottom wall of the first arc-shaped channel is equal to the outer diameter of the air outlet pipe. A manual switching structure is connected between the top left side of the annular inner tube and the middle left side of the top of the annular outer tube. The manual switching structure is also connected to the top extension of the stud.

7. The laser marking production device for processing steel components of iron towers according to claim 6, characterized in that, The manual switching structure includes a second arc-shaped channel opened on the left side of the top end of the annular outer tube. An operating column slides in the second arc-shaped channel. The bottom end of the operating column is fixed to the left side of the top end of the annular inner tube. A transmission rod is fixed to the outside of the operating column. The transmission rod is integrally formed by an L-shaped rod and an arc-shaped rod. Multiple teeth arranged along the arc-shaped rod are fixed to the outside of the arc-shaped rod near the stud. The arc-shaped rod is connected to the outside of the gear through the meshing of the multiple teeth. The mounting shaft hole of the gear is fixed to the outside of the top extension of the stud.

8. The laser marking production device for processing steel components of iron towers according to claim 7, characterized in that, The elastic locking element includes an arc-shaped outer plate on the left side of the operating column and fixed to the left side of the top of the annular outer tube. Both ends of the arc-shaped outer plate are integrally formed with a stop plate with the same arc-shaped structure on the transverse surface through V-shaped plates. The two V-shaped plates are symmetrically arranged. The middle of the two V-shaped plates is bent to provide a first weakening part. The two connecting bends on the two V-shaped plates that are connected to the arc-shaped outer plate are provided with a second weakening part. The two connecting bends on the two V-shaped plates that are connected to the stop plate are also provided with a second weakening part. The front arc surface of the stop plate is provided with a locking structure.

9. A laser marking production device for processing steel components of iron towers according to claim 8, characterized in that, The locking structure includes multiple arc-shaped limiting parts arranged in an array along the front arc surface of the stop plate. Each arc-shaped limiting part has a rubber pad fixed to its inner wall. At the connection between every two adjacent arc-shaped limiting parts, two arc-shaped chamfers are symmetrically opened. The number of arc-shaped limiting parts is four.

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