A lightning protection grid cutting device

Abstract

This utility model relates to the field of lightning protection network cutting technology, specifically to a lightning protection network cutting device, including: a cutting machine table and a cutting mechanism for cutting the lightning protection network; this utility model's lightning protection network cutting device achieves stable positioning of the lightning protection network during the cutting process by setting a pressure roller 1 and a pressure roller 2 at the front and rear sections of the laser cutting machine, effectively suppressing displacement deviations caused by external disturbances or internal stress release, and performing secondary flattening treatment on the cut lightning protection network area. It eliminates deformation problems such as edge warping and curling caused by uneven thermal expansion and contraction of materials due to local high temperatures during laser cutting.

Description

Technical Field

[0001] This utility model relates to the field of lightning protection network cutting technology, specifically to a lightning protection network cutting device. Background Technology

[0002] Lightning protection nets are mesh structures woven or cut from metal materials (such as galvanized steel, stainless steel, or aluminum alloy). They are typically installed on building rooftops, communication base stations, petrochemical facilities, and other locations as an important component of external lightning protection systems.

[0003] However, in practical engineering applications, lightning protection nets need to be customized according to the geometry of the building, the layout of the lightning protection strip, and the requirements of special protection areas (such as equipment rooms and antenna arrays). Since the standard specifications of metal mesh have fixed dimensions, they cannot be directly adapted to complex scenarios. Therefore, it is necessary to adjust their size, shape, or mesh density through cutting processes.

[0004] Currently, in the field of cutting and processing lightning protection networks, mainstream equipment mostly adopts high-power laser cutting technology. By focusing a high-energy laser beam, the material is instantly melted and vaporized, which has significant advantages such as high cutting speed, excellent processing accuracy, and strong automation. During the laser cutting process, the lightning protection network metal material (such as galvanized steel, stainless steel, etc.) is prone to edge warping and deformation due to uneven local heating. In addition, the heat accumulation effect caused by the continuity of the cutting path makes it easy to induce edge warping and deformation under the thin-walled and grid-like structural characteristics of the material.

[0005] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Utility Model Content

[0006] The purpose of this utility model is to provide a lightning protection network cutting device that can effectively solve the above-mentioned technical problems.

[0007] To achieve the purpose of this utility model, the following technical solution is adopted: A lightning protection network cutting device includes: a cutting machine base and a cutting mechanism for cutting the lightning protection network; The cutting mechanism includes: a cutting laser head for cutting lightning protection mesh, a three-axis moving module that drives the cutting laser head to move along the three axes of the cutting machine table, a mounting plate fixedly installed on the moving end of the three-axis moving module, and a flattening component for flattening the cut lightning protection mesh; the cutting laser head is fixedly installed on the mounting plate.

[0008] Furthermore, the flattening assembly includes: a limiting plate fixedly mounted on the mounting plate, a limiting hole opened on the limiting plate, and a pressing wheel inserted into the limiting hole; the pressing wheel is elastically connected to the limiting plate through a spring, and the spring provides pressure to the pressing wheel toward the surface of the lightning protection mesh; the limiting plate is also provided with a detection component for detecting whether the cut edge is warped.

[0009] Furthermore, the seam pressing wheel consists of seam pressing wheel one and seam pressing wheel two, which are respectively located on the front and rear sides of the cutting laser head along the cutting direction.

[0010] Furthermore, the detection component includes: a detection cavity fixedly installed on the limiting plate, and an air-blocking plate slidably installed in the detection cavity; the air-blocking plate is divided into an air-blocking plate one and an air-blocking plate two; the seam-pressing wheel one is fixedly connected to the air-blocking plate one; the seam-pressing wheel two is fixedly connected to the air-blocking plate two; the air-blocking plate one is provided with a trigger switch; and the air-blocking plate two is provided with a trigger part that cooperates with the trigger switch.

[0011] Furthermore, the upper end of the detection chamber is provided with an air inlet; the air inlet is connected to a protective gas delivery device through a pipe; the lower end of the detection chamber is provided with an air outlet, which is connected to a nozzle.

[0012] Furthermore, the air baffle plate and the inner wall of the detection chamber have air channels for the flow of protective gas.

[0013] Compared with the prior art, the present invention has the following beneficial effects: This utility model discloses a lightning protection mesh cutting device. By setting two pressure rollers (one before and one after) at the front and rear of the laser cutting machine, it achieves a stable positioning of the lightning protection mesh during the cutting process, effectively suppressing displacement deviations caused by external disturbances or internal stress release, and performing a secondary flattening treatment on the cut lightning protection mesh area. It also eliminates deformation problems such as warping and curling caused by uneven thermal expansion and contraction of materials due to localized high temperatures during laser cutting. Attached Figure Description

[0014] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0015] Figure 1 This is a schematic diagram of the structure of a lightning protection mesh cutting device according to the present invention; Figure 2 This is a schematic diagram of the internal structure of a lightning protection mesh cutting device according to the present invention; Figure 3 This is a schematic diagram of the cutting mechanism in this utility model; Figure 4This is a schematic diagram of the structure of the pressure flattening component in this utility model; Figure 5 This is a cross-sectional view of the detection component in this utility model; Figure 6 This is a magnified view of part A in the figure.

[0016] In the diagram: 1. Cutting machine platform; 2. Cutting mechanism; 21. Cutting laser head; 22. Three-axis moving module; 23. Mounting plate; 24. Flattening assembly; 241. Limiting plate; 242. Limiting hole; 243. Seam pressing wheel; 244. Spring; 245. Detection assembly; 2431. Seam pressing wheel one; 2432. Seam pressing wheel two; 2451. Detection chamber; 2452. Air baffle plate; 24521. Air baffle plate one; 24522. Air baffle plate two; 2453. Air inlet; 2454. Nozzle. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0018] In the description of this utility model, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. When a component is referred to as being "fixed to" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be an intermediate component at the same time. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0019] like Figures 1 to 6 As shown, the present invention provides a lightning protection network cutting device, comprising: a cutting machine base 1 and a cutting mechanism 2 for cutting lightning protection networks; The cutting mechanism 2 includes: a cutting laser head 21 for cutting lightning protection mesh, a three-axis moving module 22 for moving the cutting laser head along the three axes of the cutting machine table 1, a mounting plate 23 fixedly installed on the moving end of the three-axis moving module 22, and a flattening component 24 for flattening the cut lightning protection mesh; the cutting laser head 21 is fixedly installed on the mounting plate 23.

[0020] When it is necessary to cut the lightning protection net, the workers lay the lightning protection net on the surface of the gas cutting machine and fix it with a fixing device. It should be noted that the fixing device is existing technology, so it will not be described in detail here. After the lightning protection net is fixed on the cutting platform, the workers adjust the path of the three-axis moving module so that the cutting head moves along the preset cutting trajectory to obtain the lightning protection net of the required size.

[0021] The flattening assembly 24 includes: a limiting plate 241 fixedly mounted on the mounting plate 23, a limiting hole 242 formed on the limiting plate 241, and a pressing wheel 243 inserted into the limiting hole 242; the pressing wheel 243 is elastically connected to the limiting plate 241 by a spring 244, and the spring 244 provides pressure to the pressing wheel 243 toward the surface of the lightning protection network; the limiting plate 241 is also provided with a detection assembly 245 for detecting whether the cut edge is warped. The pressing wheel 243 is composed of a first pressing wheel 2431 and a second pressing wheel 2432, which are respectively located on the front and rear sides along the cutting direction of the cutting laser head 21.

[0022] When the three-axis moving module 22 drives the cutting laser head to cut the lightning protection net, the pressing wheel 2431, which is inserted on the limiting plate 241, squeezes the lightning protection net under the constraint of the elastic force of the spring 244; ensuring that the lightning protection net maintains a stable positioning state during the cutting process and effectively suppressing displacement deviation caused by external disturbances or internal stress release.

[0023] As the cutting laser head 21 moves dynamically, the pressure roller 2431, located at the front end of its moving direction, acts as a pre-treatment device. Before the laser cutting process begins, it performs a pre-flattening operation on the lightning protection network area to be cut. This effectively prevents cutting defects caused by factors such as uneven material surfaces, localized stress concentration, or thermal deformation during the cutting process. These defects include, but are not limited to, excessive surface roughness, cutting path deviation, and micro-cracks at the cutting edges, thereby significantly improving cutting quality and process stability.

[0024] Meanwhile, the pressure roller 2432, located at the rear end of the cutting laser head 21, serves as a post-processing device. After laser cutting, it performs a secondary flattening treatment on the cut lightning protection mesh area. This eliminates deformation problems such as edge warping and curling caused by uneven thermal expansion and contraction of materials due to localized high temperatures during laser cutting. It ensures that the flatness and straightness of the cut edges of the lightning protection mesh meet stringent quality standards, effectively avoiding subsequent welding process defects caused by edge warping, thereby guaranteeing the overall structural strength and electrical performance stability of the lightning protection mesh product.

[0025] In summary, by setting pressure rollers 2431 and 2432 at the two ends after the cutting laser head 21, a stable positioning of the lightning protection mesh is maintained during the cutting process. This effectively suppresses displacement deviations caused by external disturbances or internal stress release, and provides a secondary flattening treatment for the cut lightning protection mesh area. It also eliminates deformation problems such as warping and curling caused by uneven thermal expansion and contraction of the material due to localized high temperatures during laser cutting.

[0026] The detection component 245 includes: a detection cavity 2451 fixedly installed on the limiting plate 241, and an air-blocking plate 2452 slidably installed in the detection cavity 2451; the air-blocking plate 2452 is divided into an air-blocking plate one 24521 and an air-blocking plate two 24522; the seam-pressing wheel one 2431 is fixedly connected to the air-blocking plate one 24521; the seam-pressing wheel two 2432 is fixedly connected to the air-blocking plate two 24522; the air-blocking plate one 24521 is provided with a trigger switch; the air-blocking plate two 24522 is provided with a trigger part that cooperates with the trigger switch.

[0027] In the laser cutting process of lightning protection mesh, if significant edge warping deformation occurs at the edge of the lightning protection mesh after cutting, and the degree of deformation exceeds the effective flattening range that the pressure roller 2432 can provide through conventional elastic deformation, the system will trigger a linkage response mechanism. Specifically, when the pressure roller 2432 is subjected to abnormal reaction force from the warped lightning protection mesh, causing its compression spring 244 to undergo significant elastic deformation and move upward, the displacement will be significantly greater than the distance that the pressure roller 2431 moved upward before cutting.

[0028] At this point, due to the difference in relative displacement between the second pressing roller 2432 and the first pressing roller 2431 in the vertical direction, they will be in a mechanical state of "poke-open separation". Furthermore, the air-blocking plate 2452 associated with the second pressing roller 2432 will simultaneously undergo a significant upward displacement within the detection cavity 2451. This displacement significantly exceeds the displacement of the first pressing roller 2431 driving its associated air-blocking plate 2452. This displacement difference causes a change in the contact state between the trigger switch on the air-blocking plate 2452 and the preset trigger element, changing them from a contact and conducting state to a separated state, thereby triggering a change in the short-circuit characteristics of the circuit.

[0029] The alarm system integrated on the limit plate 241 forms a closed-loop control circuit with the trigger switch via electrical connection. When the trigger switch and trigger element are mechanically disconnected from the circuit, the alarm will immediately receive the electrical signal change and then power on to start the alarm program. The alarm provides clear warning information to on-site personnel through visual means such as audible and visual signals, indicating that there may be an abnormality in the current cutting process.

[0030] Upon receiving an alarm signal, staff will conduct a comprehensive analysis of the cutting status according to a pre-defined fault diagnosis process. This analysis includes, but is not limited to, checking the cutting parameter settings, the working status of the flattening component 24, the material properties of the lightning protection network, and the overall mechanical precision of the equipment. Based on the analysis results, staff will take targeted adjustment measures, such as optimizing cutting parameters, calibrating the flattening component 24, replacing worn parts, or adjusting the equipment layout, to ensure that the process quality and production efficiency of laser-cut lightning protection networks are effectively restored and improved.

[0031] The detection chamber 2451 is provided with an air inlet 2453 at its upper end; the air inlet 2453 is connected to the protective gas delivery device through a pipe; the detection chamber 2451 is provided with an air outlet at its lower end, and the air outlet is connected to the nozzle 2454. The air baffle 2452 and the inner wall of the detection chamber 2451 have air channels for the flow of protective gas.

[0032] When the laser cutting head cuts the lightning protection mesh, the protective gas delivery device delivers gas into the detection chamber 2451. The gas delivered into the detection chamber 2451 is then delivered to the nozzle 2454 through the gap between the gas baffle plate 2452 and the detection chamber 2451, and discharged from the nozzle 2454 onto the surface of the lightning protection mesh during cutting, thereby inhibiting the oxidation reaction in the cutting area, reducing the width of the heat-affected zone, and reducing the probability of molten slag adhesion. When the lightning protection mesh exhibits significant edge warping after cutting, the gas baffle plate 24521 and the gas baffle plate 24522 are separated under the drive of the pressure roller 243, and the gas enters the detection chamber in this state. The protective gas inside 2451 not only flows out from the gap reserved between the gas baffle plate 2452 and the detection chamber 2451, but also from the gap punctured between the first gas baffle plate 24521 and the second gas baffle plate 24522, thereby increasing the outflow of protective gas. Thus, when a large edge warping occurs, the protective gas flow rate is automatically increased to more effectively suppress the oxidation reaction in that area, more thoroughly blow away slag, reduce adhesion, enhance heat dissipation to more strictly control the width of the heat-affected zone, adaptively compensate for the adverse effects of edge warping, and improve the stability and quality of the cutting process. It should be noted that the protective gas delivery device is existing technology and can preferably be an air pump.

[0033] In summary, by using the air baffle plate 24521 and the air baffle plate 24522 to rise and fall synchronously with the warping, the condition of the cut seam after cutting can be monitored, preventing warping during cutting. At the same time, as the warping increases, the discharge of protective gas will also increase, thereby improving the stability and quality of the cutting process.

[0034] Working principle: When it is necessary to cut the lightning protection net, the worker lays the lightning protection net on the surface of the gas cutting machine. As the cutting laser head moves dynamically, the pressure roller 2431 at the front end of its movement direction acts as a pre-treatment device, performing a pre-flattening operation on the lightning protection net area to be cut before the laser cutting process starts. The pressure roller 2432 at the rear end of the cutting laser head acts as a post-treatment device, performing a secondary flattening treatment on the cut lightning protection net area after the laser cutting is completed. Then, the height difference between the pressure roller 2431 and the pressure roller 2432 enables real-time detection of the cut lightning protection net.

[0035] All standard parts used in this utility model can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and cutting, which are mature technologies in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art, and the circuit connections also use conventional connection methods in the prior art, which will not be detailed here. Contents not described in detail in this specification belong to prior art known to those skilled in the art. It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims of this utility model.

Claims

1. A lightning protection net cutting apparatus, characterized by, include: Cutting machine stand and cutting mechanism for cutting lightning protection grids; The cutting mechanism includes: a cutting laser head for cutting lightning protection mesh, a three-axis moving module for moving the cutting laser head, a mounting plate fixedly installed on the moving end of the three-axis moving module, and a flattening component for flattening the cut lightning protection mesh; the cutting laser head is fixedly installed on the mounting plate.

2. A lightning protection net cutting apparatus as claimed in claim 1, characterized in that, The flattening assembly includes: a limiting plate fixedly mounted on the mounting plate, a limiting hole opened on the limiting plate, and a pressing wheel inserted into the limiting hole; the pressing wheel is elastically connected to the limiting plate by a spring, and the spring provides pressure to the pressing wheel toward the surface of the lightning protection mesh; the limiting plate is also provided with a detection component for detecting whether the cut edge is warped.

3. A lightning protection mesh cutting apparatus as claimed in claim 2, wherein, The seam pressing wheel consists of seam pressing wheel one and seam pressing wheel two, which are respectively located on the front and rear sides along the cutting direction of the cutting laser head.

4. A lightning protection mesh cutting apparatus as claimed in claim 3, wherein, The detection assembly includes: a detection cavity fixedly installed on the limiting plate, and an air-blocking plate slidably installed in the detection cavity; the air-blocking plate is divided into an air-blocking plate one and an air-blocking plate two; the seam-pressing wheel one is fixedly connected to the air-blocking plate one; the seam-pressing wheel two is fixedly connected to the air-blocking plate two; the air-blocking plate one is provided with a trigger switch; the air-blocking plate two is provided with a trigger part that cooperates with the trigger switch.

5. A lightning protection mesh cutting apparatus as claimed in claim 4, wherein, The detection chamber is provided with an air inlet at the upper end; the air inlet is connected to a protective gas delivery device through a pipe; the detection chamber is provided with an air outlet at the lower end, and the air outlet is connected to a nozzle.

6. A lightning protection mesh cutting apparatus as claimed in claim 5, wherein, The air baffle plate and the inner wall of the detection chamber have air channels for the flow of protective gas.

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