Graphene grounding strip preparation device and method

Abstract

The invention provides a graphene grounding strip preparation device and method, belongs to the technical field of grounding strip preparation, and can at least partially solve the problems that when an existing grounding strip is applied to a high-load application condition, the conductive effect of the existing grounding strip is poor, the grounding requirement cannot be met, and the whole grounding strip cannot be freely bent, deformed and the like. In order to solve the problems of few actual application modes and poor applicability in the prior art, the preparation device comprises a bonding assembly, a coating assembly and a fixing assembly which are sequentially arranged in the length direction of the preparation device, the preparation device comprises the bonding assembly, the coating assembly and the fixing assembly which are sequentially arranged, and the preparation device is provided with the bonding assembly and the coating assembly; the metal net layer is introduced in the scraping process of the graphite sheet layer, so that the metal net layer participates in the scraping and embedding process of the graphite sheet layer during film coating forming, a more continuous and stable conductive network is constructed in a unit area, and the conductive efficiency and the conductive uniformity of the grounding strip are remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of grounding strip preparation technology, specifically relating to a graphene grounding strip preparation device and method. Background Technology

[0002] Commonly used grounding strips are made of metal braided strips. They are made by weaving multiple steel wires and filling the gaps between the wire mesh with a mixture of adhesive and carbon powder. This makes the grounding strip a complete and undamaged steel mesh grounding strip with certain conductivity. When used on the casing of electrical equipment, it can ground the equipment by passing the overflowing electrical energy from one end to the other.

[0003] However, when applied to high-load applications such as lightning strikes, high-voltage equipment, and large-scale grouped lightning protection grounding strips, this type of grounding strip has poor conductivity and cannot meet the grounding requirements. In addition, due to the effect of the overall solidified layer of the mesh filling caused by its own structure, the entire grounding strip cannot be freely bent or deformed, resulting in limited practical applications and poor applicability. Therefore, we propose a graphene grounding strip preparation device and method. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art, and to provide a graphene grounding strip preparation device and method.

[0005] The present invention provides a graphene grounding strip preparation device, comprising an adhesive assembly for spraying and spreading adhesive onto the surface of a perforated steel plate during operation, a coating assembly for coating a graphene layer onto the surface of the perforated steel plate during operation, and a fixing assembly for coating and pressing the perforated steel plate during operation. The bonding component, the coating component, and the fixing component are each provided with a rectangular groove inside, and the rectangular grooves are interconnected to form a steel plate channel that runs through the bonding component, the coating component, and the fixing component. One end of the fixing component is provided with a linear guide gripping end at the corresponding position of the steel plate channel for fixing and conveying the hollow steel plate during operation, so that the hollow steel plate moves along the steel plate channel during operation.

[0006] Furthermore, the bonding assembly includes glue tanks disposed on both sides of the steel plate channel. An insulation pipe assembly is disposed at one end of the glue tank facing the coating assembly, and a spraying assembly for atomizing and spraying glue during operation is disposed on the side of the glue tank facing the steel plate channel. The insulation pipe assembly includes multiple heating pipes spaced apart.

[0007] Specifically, a lateral coating roller is provided at one end of the insulation pipe assembly facing the coating component. The lateral coating roller is located on both sides of the steel plate channel, and the rotating surface of the lateral coating roller is in contact with the surface of the perforated steel plate during operation.

[0008] Specifically, the coating assembly includes coating boxes disposed on both sides of the steel plate channel. A lifting cylinder is disposed inside the coating box. The telescopic movable end of the lifting cylinder faces the steel plate channel and a graphite drag frame is disposed at the end of the telescopic movable end. A spring sleeve is disposed on the side of the graphite drag frame away from the steel plate channel.

[0009] Preferably, one end of the spring sleeve is connected to the inner wall of the coating box, and a pressed graphite block is provided on the side of the graphite drag frame facing the steel plate channel. The surface of the pressed graphite block is in contact with the perforated steel plate during operation.

[0010] Specifically, the fixing component includes pressing components disposed on both sides of the steel plate channel. A coating component is disposed at one end of the pressing component facing the coating component. The coating component includes a lateral arc-shaped rail disposed on the outside of the steel plate channel. A rotating shaft is disposed on the inner side of the lateral arc-shaped rail. A coating rod is disposed on the rotating shaft. A metal mesh layer is wound on the coating rod. One end of the metal mesh layer is fixed to the surface of the perforated steel plate during operation.

[0011] Furthermore, a welding machine is provided between the lateral arc-shaped rails, and a linear welding block is connected to the end of the welding machine facing the steel plate channel for welding the metal mesh layer to the surface of the hollow steel plate during operation.

[0012] Furthermore, the pressing assembly includes a pressure clamping mechanism disposed between the fixing assembly and the rail gripping end for pressing the perforated steel plate during operation.

[0013] Specifically, the rail gripping end includes multiple segmented rail rods, and a lateral wedge block is provided on the segmented rail rod facing the inner wall of the steel plate channel to fix the hollow steel plate during operation. The lateral wedge block is an inclined block.

[0014] Another aspect of the present invention provides a method for preparing a graphene grounding strip, the method being implemented using the aforementioned graphene grounding strip preparation apparatus, and comprising the following steps: S1: Push the perforated steel plate to the bonding component using the rail gripping end, and spray glue onto the surface of the perforated steel plate; then use the graphite block of the coating component to clamp the surface of the perforated steel plate; S2: The metal mesh layer inside the fixing component is welded and fixed to the perforated steel plate by the fixing component, and the metal mesh layer is covered on the surface of the perforated steel plate; then the perforated steel plate after film coating is pressed and clamped, and the overlapping edges or ends of the metal mesh layer are welded and fixed. S3: After the perforated steel plate is conveyed to the bonding assembly for adhesive adhesion, it is conveyed to the coating assembly, where the metal mesh layer and the concave-convex structure of the perforated steel plate scrape and bond graphite; then the perforated steel plate is clamped and fixed by the metal mesh layer again. S4: Release the fixing of the rail gripping end to the hollow steel plate, fill the hollow part in the middle of the hollow steel plate with ionized conductive powder and graphite powder, and press the hollow steel plate to make the conductive powder densely filled and complete the molding.

[0015] The beneficial effects of this invention are as follows: Equipped with bonding and coating components, a metal mesh layer is introduced during the graphite sheet scraping process. This metal mesh layer participates in the scraping and embedding of the graphite sheets during the coating process, allowing the scraped, flake-like conductive sheets to accumulate and fix within the metal mesh openings and surrounding uneven structures. This creates a more continuous and stable conductive network per unit area, significantly improving the conductivity and uniformity of the grounding strip. By repeatedly performing the adhesive application, graphite scraping, and metal mesh layer clamping steps, a multi-layer composite structure is formed, consisting of conductive sheets, adhesive, and metal mesh. This allows for adjustment of the grounding strip thickness as needed, enhancing overall toughness and structural stability while improving conductivity, thus avoiding the problems of cracking or peeling in single-layer conductive structures. Attached Figure Description

[0016] Figure 1 This is a schematic side cross-sectional view of the overall structure of a graphene grounding strip preparation device according to a specific embodiment of the present invention; Figure 2 This is a schematic diagram of the distribution of the perforated steel plate coating and bonding structure in a graphene grounding strip preparation device according to a specific embodiment of the present invention. Figure 3 This is a schematic diagram of the fixed component structure of a graphene grounding strip preparation device according to a specific embodiment of the present invention; Figure 4 This is a flowchart illustrating the steps of a graphene grounding strip preparation method according to a specific embodiment of the present invention.

[0017] Among them, 1 is the bonding assembly, 101 is the glue tank, 102 is the spraying assembly, 103 is the insulation pipe assembly, and 104 is the lateral coating roller. 2 Coating assembly, 201 Coating box, 202 Through groove, 203 Lifting cylinder, 204 Graphite drag frame, 205 Spring sleeve, 206 Pressed graphite block; 3. Fixing components, 301 lateral arc-shaped linear guide, 302 film-coated rod, 303 rotating shaft, 304 metal mesh layer, 305 welding machine, 306 linear welding block, 307 pressure clamping mechanism; 4. Rail gripping end, 401 segmented rail rod, 402 lateral wedge block; 5. Perforated steel plate, 6. Steel plate channel. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] like Figure 1 As shown in the figure, a graphene grounding strip preparation device provided by a specific embodiment of the present invention includes an adhesive component 1, a coating component 2 and a fixing component 3 arranged in sequence. The bonding component 1, coating component 2 and fixing component 3 are each provided with a rectangular groove inside, and the rectangular grooves are interconnected to form a steel plate channel 6 that runs through the bonding component 1, coating component 2 and fixing component 3. One end of the fixing component 3 is provided with a linear guide gripping end 4 at the corresponding position of the steel plate channel for fixing and conveying the hollow steel plate 5 during operation; The bonding component 1 is used to spray and spread adhesive onto the surface of the perforated steel plate 5 during operation; the coating component 2 is used to coat the surface of the perforated steel plate 5 with a graphene layer during operation; the fixing component 3 is used to coat and press the perforated steel plate 5 during operation; and the perforated steel plate 5 moves along the steel plate channel 6 during operation.

[0020] Specifically, in this invention, the graphene layer is a multilayer graphene or graphene-like conductive sheet structure formed by mechanical clamping and scraping. The multilayer graphene or graphene-like conductive sheet structure can be irregularly distributed in a scale-like manner on the surface of the hollow steel plate 5, and then combined and fixed with the colloid and metal mesh layer in the subsequent coating and pressing process to form a continuous conductive layer.

[0021] Furthermore, the inner bottom of the steel plate channel 6 provides support and restraint for the perforated steel plate 5 throughout its reciprocating motion, ensuring that the perforated steel plate 5 maintains a flat posture during coating, scraping, and pressing, thereby improving the uniformity of conductive sheet adhesion and the consistency of subsequent film lamination. Preferably, the gap between the inner wall of the steel plate channel 6 and the outer contour of the perforated steel plate 5 is designed to fit together to reduce the lateral sway of the perforated steel plate 5 during movement.

[0022] Furthermore, the adhesive sprayed on the bonding component 1 is a heat-resistant adhesive or a high-temperature adhesive. After being atomized and sprayed, the adhesive forms an adhesive layer, which is used to achieve the initial adhesion of the graphite flakes and fix the flake graphite after multiple scrapings. At the same time, it plays a composite bonding role during the pressing process to enhance the structural integrity of the conductive layer and the toughness of the grounding strip.

[0023] Based on the above basic implementation method, the bonding component 1 includes glue tanks 101 disposed on both sides of the steel plate channel 6. A heat insulation pipe assembly 103 is disposed at one end of the glue tank 101 facing the coating component 2. A spraying component 102 for atomizing and spraying glue during operation is disposed on the side of the glue tank 101 facing the steel plate channel 6. The heat insulation pipe assembly 103 includes multiple heating pipes spaced apart.

[0024] Specifically, the spraying assembly 102 can be an atomizing nozzle or an atomizing spray pipe array, with its spraying direction facing the interior of the steel plate channel 6, enabling uniform spraying of the surface of the perforated steel plate 5. The heat insulation pipe assembly 103 is located at one end near the coating assembly 2, ensuring that the adhesive layer remains in a suitable state during the process of transporting the perforated steel plate 5 from the bonding assembly 1 to the coating assembly 2, thereby improving the stable adhesion effect when the graphite flakes are sandwiched or scraped; the coating box 201 is provided with a through groove 202 on the side facing the steel plate channel 6, which is connected to the steel plate channel 6. The through groove 202 is used to accommodate the straight passage of the perforated steel plate 5 during the working process and to provide operating space for the pressed graphite block 206 to contact the surface of the perforated steel plate 5.

[0025] In one specific implementation, such as Figure 2 As shown, a lateral coating roller brush 104 is provided at one end of the insulation pipe assembly 103 facing the coating assembly 2. The lateral coating roller brush 104 is provided on both sides of the steel plate channel 6. The rotating surface of the lateral coating roller brush 104 is in contact with the surface of the hollow steel plate 5 during operation. The coating assembly 2 includes a coating box 201 provided on both sides of the steel plate channel 6. A lifting cylinder 203 is provided inside the coating box 201. The telescopic movable end of the lifting cylinder 203 faces the steel plate channel 6 and a graphite drag frame 204 is provided at the end of the telescopic movable end. A spring sleeve 205 is provided on the side of the graphite drag frame 204 away from the steel plate channel 6.

[0026] In this embodiment, the lateral coating roller 104 is used to spread and level the adhesive sprayed onto the surface of the perforated steel plate 5, so that the adhesive layer forms a uniform film on the surface of the perforated steel plate 5, thereby improving the adhesion consistency of the graphite flakes during subsequent clamping or scraping processes. The lifting cylinder 203 is used to drive the graphite dragging frame 204 to move closer to or away from the perforated steel plate 5 along the direction of the through groove 202, so as to achieve the clamping and pressing of the pressed graphite block 206 on the surface of the perforated steel plate 5. The spring sleeve 205 is used to provide elastic preload, so that the pressed graphite block 206 remains in continuous contact as the perforated steel plate 5 passes through, thereby forming a stable scraping during relative movement.

[0027] Furthermore, in the initial layer removal stage, the perforated steel plate 5 can be in a relatively static or low-speed movement state. The lifting cylinder 203 drives the pressing graphite block 206 to clamp with the surface of the perforated steel plate 5, so that the peelable flakes on the surface of the graphite block adhere to the surface of the perforated steel plate 5 under the action of the adhesive layer. In the subsequent flake scraping stage, the perforated steel plate 5 and the pressing graphite block 206 maintain relative movement, so that the graphite flakes form a groove scraping effect under the action of the grid structure or surface micro-protrusion structure, thereby forming a relatively uniform stack of flake-shaped conductive flakes on the surface of the perforated steel plate 5.

[0028] In another specific embodiment, such as Figure 3 As shown, one end of the spring sleeve 205 is connected to the inner wall of the coating box 201. A pressed graphite block 206 is provided on the side of the graphite drag frame 204 facing the steel plate channel 6. The surface of the pressed graphite block 206 is in contact with the hollow steel plate 5 during operation. The fixing component 3 includes pressing components provided on both sides of the steel plate channel 6. A coating component is provided on the end of the pressing component facing the coating component 2. The coating component includes a lateral arc-shaped rail 301 provided on the outside of the steel plate channel 6. A rotating shaft 303 is provided on the inner side of the lateral arc-shaped rail 301. A coating rod 302 is provided on the rotating shaft 303. A metal mesh layer 304 is wound on the coating rod 302. One end of the metal mesh layer 304 is fixed to the surface of the hollow steel plate 5 during operation. When the rotating shaft 303 rotates on the lateral arc-shaped rail 301, the dense metal mesh layer 304 rotates around the hollow steel plate 5 once.

[0029] Specifically, the metal mesh layer 304 can be a stainless steel mesh, copper mesh, or other conductive metal mesh. Its mesh structure not only forms the outer conductive skeleton but also serves as a scraping interface when the perforated steel plate 5 reciprocates through the coating component 2. This makes it easier for the scraped flake-like graphite flakes to embed into the mesh and its surrounding uneven areas, thereby improving the enrichment degree and composite stability of the conductive material per unit area. When the rotating shaft 303 moves along the lateral arc-shaped rail 301, the coating rod 302 drives the metal mesh layer 304 to complete the coating around the perforated steel plate 5. Preferably, during the coating process, the perforated steel plate 5 remains relatively stationary or moves at a low speed to ensure a consistent coating trajectory and reduce wrinkles in the metal mesh layer 304.

[0030] In one specific implementation, such as Figure 4 As shown, a welding machine 305 is arranged between the lateral arc-shaped rails 301. One end of the welding machine 305 facing the steel plate channel 6 is connected to a linear welding block 306 for welding the metal mesh layer 304 to the surface of the perforated steel plate 5 during operation. The pressing assembly includes a pressure clamping mechanism 307 arranged between the fixing assembly and the rail gripping end for pressing the perforated steel plate 5 during operation. The rail gripping end 4 includes multiple segmented rail rods 401. Lateral wedge blocks 402 are provided on the segmented rail rods 401 facing the inner wall of the steel plate channel 6 to fix the perforated steel plate 5 during operation. The lateral wedge block 402 is an inclined block; the pressing assembly also includes an edge positioning clamping mechanism 308 and a pressure clamping mechanism 307 located above the steel plate channel 6. The edge positioning clamping mechanism 308 is located on both sides of the steel plate channel 6 and is used to press and fix the edge of the hollow steel plate 5. When pressing the entire grounding strip, it is necessary to press and fix both ends and both sides. During the pressing process, electro-ion powder can be applied to its hollow interior. When the electro-ion powder is filled, it is laterally squeezed by the pressing assembly and gathers back inward to improve the adhesion effect between the electro-ion powder inside the grounding strip and the inner layer of the hollow steel plate 5.

[0031] In this embodiment, the welding machine 305 can be a high-frequency welding machine, and the linear welding block 306 is used to linearly weld and fix the ends, overlapping edges, or local contact areas of the metal mesh layer 304, so that the metal mesh layer 304 and the perforated steel plate 5 form a stable electrical and mechanical connection. The pressure clamping mechanism 307 is used to press the coated perforated steel plate 5, so that the metal mesh layer 304, the flake graphite sheet layer, and the adhesive layer form a composite structure under the action of the pressing force. At the same time, the pressing can also cause composite cross-linking between the mesh layers, improving the overall toughness and conductive surface integrity of the grounding strip.

[0032] Specifically, the lateral wedge block 402 cooperates with the segmented rail rod 401 to form an inner diameter expansion structure. Through the squeezing action of the wedge block, the rail gripping end 4 forms a reliable friction clamp with the interior of the hollow steel plate 5, thereby realizing the traction and conveying of the hollow steel plate 5. Preferably, the rail gripping end 4 is a detachable fixing structure, so as to release the fixing of the hollow steel plate 5 after the grounding strip is formed, and to fill the middle hollow of the hollow steel plate 5.

[0033] In another specific embodiment, the present invention also provides a method for preparing a graphene grounding strip, the method being implemented using the above-described graphene grounding strip preparation apparatus, and comprising the following steps: S1. Adhesive Adhesion: Push the perforated steel plate 5 to the bonding component 1 through the rail gripping end 4, spray adhesive on the surface of the perforated steel plate 5 and spread it evenly. S2. Graphene extraction: The graphite block is clamped onto the surface of the perforated steel plate 5 using the coating component 2 to adhere the graphene layer. The clamping process is repeated 1 to 5 times. S3, Metal Coating: One end of the metal mesh layer is welded to the perforated steel plate 5 by the welding machine 305 in the fixing component 3, and the metal mesh layer is covered on the perforated steel plate 5; S4. Clamping and welding fixation: Press the coated hollow steel plate 5 with the fixing component 3 and clamp and tighten its edge distance. After pressing, the overlapping edge or end of the metal mesh layer is welded and fixed. S5, Secondary Adhesive Application: Push the hollow steel plate 5 back to the bonding component 1 and apply adhesive again; S6. Graphite scraping: After the adhesive is applied, the graphite is transported to the coating assembly 2 and scraped and bonded using the uneven properties of the metal mesh layer and the hollow steel plate 5. S7. Secondary film coating and clamping: The metal mesh layer is covered on the perforated steel plate 5 again, and the perforated steel plate 5 is clamped by the fixing component 3. When a thick grounding strip is required, repeat steps S5-S7 multiple times. S8. Ionized conductive powder filling: Release the fixation of the rail gripping end 4 to the hollow steel plate 5, and fill the hollow part in the middle of the hollow steel plate 5 with ionized conductive powder and graphite powder. S9. Compacting the ionized conductive powder: After filling, the hollow steel plate 5 is pressed multiple times by the fixing component 3 to reduce the middle gap of the hollow steel plate 5 and compact the ionized conductive powder.

[0034] Further, in step S1, the adhesive is preferably a heat-resistant adhesive or a high-temperature adhesive, and the adhesive is atomized and sprayed by the spraying component 102 of the bonding component 1, and spread and leveled by the lateral coating roller brush 104, so that the adhesive forms a continuous and uniform adhesion layer on the surface of the hollow steel plate 5. This adhesion layer is used to achieve the initial adhesion of the graphite sheet layer in step S2, and to provide bonding and fixing effect on the flake graphite / graphene sheet layer during the scraping process in the subsequent step S6. The adhesive application can be repeated according to the thickness requirements of the grounding strip, and the amount of adhesive sprayed can be gradually increased during repeated execution to improve the composite firmness between the conductive sheet layer and the metal mesh layer after multiple scrapings.

[0035] Furthermore, in steps S2 and S6, the graphene layer is a multilayer graphene or graphene-like conductive sheet structure formed by mechanical clamping and scraping. Step S2 is the layer removal stage, where the perforated steel plate 5 can be in a relatively static or low-speed moving state. The lifting cylinder 203 drives the pressed graphite block 206 to clamp with the perforated steel plate 5, allowing the peelable sheets on the graphite block surface to transfer and adhere to the surface of the perforated steel plate 5 under the action of the adhesive layer. Step S6 is the scraping stage, where the perforated steel plate 5 and the pressed graphite block 206 maintain relative movement. Combined with the uneven grid structure of the metal mesh layer, a groove-like scraping process is formed, causing the conductive sheets to be distributed in an irregular scale-like pattern and embedded in the grid area, thereby increasing the enrichment of conductive material per unit area and the continuity of the conductive network. In steps S3 and S4, the metal mesh layer is preferably made of stainless steel mesh, copper mesh, or other conductive metal mesh. The welding machine 305 can use high-frequency welding to weld and fix the ends and overlapping edges of the metal mesh layer to form a stable electrical connection. The coated perforated steel plate 5 is pressed and clamped by the pressing component of the fixing component 3, so that the metal mesh layer, conductive sheet layer, and adhesive layer form a composite structure, improving the overall toughness and conductive surface integrity of the grounding strip. In steps S8 and S9, ionized conductive powder and graphite powder are used as conductive fillers to fill the middle perforated area of ​​the perforated steel plate 5. After filling, the fixing component 3 is pressed multiple times to make the conductive filler denser in the perforated space and fully adhere to the inner wall, thereby reducing the internal porosity and improving the conductive stability. Preferably, the number of pressing times can be adjusted according to the filling density to reduce the gap in the middle perforated area and achieve the expected density.

[0036] To help better understand the present invention, a more comprehensive and specific embodiment of the present invention is described. In this embodiment, the present invention provides a graphene grounding strip preparation apparatus, including an adhesive component 1, a coating component 2, and a fixing component 3 arranged sequentially. The bonding component 1, coating component 2 and fixing component 3 are each provided with a rectangular groove inside, and the rectangular grooves are interconnected to form a steel plate channel 6 that runs through the bonding component 1, coating component 2 and fixing component 3. One end of the fixing component 3 is provided with a linear guide gripping end 4 at the corresponding position of the steel plate channel for fixing and conveying the hollow steel plate 5 during operation; The bonding component 1 is used to spray and spread adhesive onto the surface of the perforated steel plate 5 during the working process; the coating component 2 is used to coat the surface of the perforated steel plate 5 with a graphene layer during the working process; the fixing component 3 is used to coat and press the perforated steel plate 5 during the working process; and the perforated steel plate 5 moves along the steel plate channel 6 during the working process.

[0037] In this embodiment, the bonding assembly 1 includes glue tanks 101 disposed on both sides of the steel plate channel 6. A heat-insulating pipe assembly 103 is disposed at one end of the glue tank 101 facing the coating assembly 2. A spraying assembly 102 for atomizing and spraying glue during operation is disposed on the side of the glue tank 101 facing the steel plate channel 6. The heat-insulating pipe assembly 103 includes multiple heating pipes spaced apart. A lateral coating roller brush 104 is disposed at one end of the heat-insulating pipe assembly 103 facing the coating assembly 2. The lateral coating roller brush 104 is disposed on both sides of the steel plate channel 6, and the rotating surface of the lateral coating roller brush 104... During operation, it adheres to the surface of the perforated steel plate 5; the coating assembly 2 includes coating boxes 201 disposed on both sides of the steel plate channel 6, a lifting cylinder 203 disposed inside the coating box 201, the telescopic movable end of the lifting cylinder 203 facing the steel plate channel 6 and a graphite drag frame 204 disposed at the end of the telescopic movable end, a spring sleeve 205 disposed on the side of the graphite drag frame 204 away from the steel plate channel 6; one end of the spring sleeve 205 is connected to the inner wall of the coating box 201, and a pressed graphite block 206 disposed on the side of the graphite drag frame 204 facing the steel plate channel 6. The surface of plate 6 is in contact with the perforated steel plate 5 during operation; the fixing component 3 includes pressing components disposed on both sides of the steel plate channel 6, and a coating component is disposed at one end of the pressing component facing the coating component 2. The coating component includes two lateral arc-shaped rails 301 disposed on the outside of the steel plate channel 6, and a rotating shaft 303 is disposed on the inner side of the lateral arc-shaped rails 301. A coating rod 302 is disposed on the rotating shaft 303, and a metal mesh layer 304 is wound on the coating rod 302. One end of the metal mesh layer 304 is fixed to the surface of the perforated steel plate 5 during operation; a space is provided between the lateral arc-shaped rails 301. A welding machine 305 is provided, and a linear welding block 306 is connected to one end of the welding machine 305 facing the steel plate channel 6 for welding the metal mesh layer 304 to the surface of the hollow steel plate 5 during the working process; the pressing assembly includes a pressure clamping mechanism 307 disposed between the fixing assembly and the rail gripping end for pressing the hollow steel plate 5 during the working process; the rail gripping end 4 includes a plurality of segmented rail rods 401, and a lateral wedge block 402 is provided on the segmented rail rod 401 facing the inner wall of the steel plate channel 6 for fixing the hollow steel plate 5 during the working process, and the lateral wedge block 402 is an inclined block.

[0038] Furthermore, another aspect of the present invention provides a method for preparing a graphene grounding strip, the method being implemented using the above-described graphene grounding strip preparation apparatus, comprising the following steps: S1: Push the perforated steel plate 5 to the bonding component 1 through the linear guide gripping end 4, and spray glue on the surface of the perforated steel plate 5; then use the graphite block of the coating component 2 to clamp the surface of the perforated steel plate 5, and perform the clamping process 1 to 5 times. S2: Weld one end of the metal mesh layer to the perforated steel plate 5 by fixing component 3, and cover the surface of the perforated steel plate 5 with the metal mesh layer; then press and clamp the perforated steel plate 5 after coating, and weld and fix the overlapping edges or ends of the metal mesh layer. S3: After the perforated steel plate 5 is conveyed to the bonding component 1 for adhesive adhesion, it is conveyed to the coating component 2, where the graphite is scraped and bonded using the metal mesh layer and the concave-convex structure of the perforated steel plate 5; then the perforated steel plate 5 is clamped and fixed with the metal mesh layer again. S4: Release the fixing of the guide rail gripping end 4 to the hollow steel plate 5, fill the hollow part in the middle of the hollow steel plate 5 with ionized conductive powder and graphite powder, and press the hollow steel plate 5 multiple times to make the conductive powder densely filled and complete the molding.

[0039] In summary, the embodiments disclosed herein have at least the following technical effects: This invention uses adhesive adhesion, mechanical clamping and scraping to attach multiple layers of graphene or graphene-like conductive sheets to the surface of a perforated steel plate 5 in a scale-like form. Combined with a metal mesh layer and pressing, the conductive sheets are uniformly enriched in the metal mesh holes and its uneven structure to form a continuous and stable conductive network, thereby significantly improving the overall conductivity and conductivity uniformity of the grounding strip. In this invention, the metal mesh layer not only serves as the outer conductive framework, but also participates in the formation of graphite flakes as the scraping interface during repeated scraping processes. This allows the conductive material to be more concentratedly distributed within a unit area, reducing the ineffective accumulation of conductive material and improving the utilization efficiency of conductive material and the stability of the conductive layer structure. By repeatedly performing the steps of glue application, graphite scraping, and metal mesh layer clamping, grounding strip structures of different thicknesses can be formed as needed to meet the requirements of conductivity and mechanical strength in different grounding scenarios. The process is highly flexible and has a wide range of applications. The perforated steel plate 5 after coating is pressed by the pressing component, so that the metal mesh layer, conductive sheet layer and colloid form a composite cross-linked structure, which not only improves the integrity of the conductive surface of the grounding strip, but also enhances the overall toughness and tensile and bending performance, and reduces the risk of the grounding strip breaking or delaminating during use. The present invention retains a hollow space inside the grounding strip, and ionized conductive powder and graphite powder can be filled into the hollow space after molding. By compaction, the conductive filler is fully attached to the inner wall, thereby reducing the internal porosity and further improving the conductivity stability and long-term reliability of the grounding strip. The present invention adopts a linear arrangement of bonding component 1, coating component 2 and fixing component 3, so that the hollow steel plate 5 is reciprocated or continuously conveyed along the steel plate channel 6. The process is closely connected and the process is controllable, which facilitates continuous and automated production, resulting in high production efficiency and good manufacturing consistency. By creating a usable hollow structure during the manufacturing stage, the grounding strip can not only be used as a conductive strip during the use stage, but also be used in conjunction with components such as conductive pins and lightning protection grounding pins to form a strong conductive body. This allows it to adapt to different grounding and lightning protection application scenarios, expanding the usage methods and application range of the grounding strip.

[0040] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A graphene grounding strip preparation apparatus, characterized in that, It includes an adhesive assembly (1) for spraying and spreading adhesive onto the surface of the perforated steel plate (5) during operation, a coating assembly (2) for coating the surface of the perforated steel plate (5) with a graphene layer during operation, and a fixing assembly (3) for coating and pressing the perforated steel plate (5) during operation. The bonding component (1), the coating component (2) and the fixing component (3) are respectively provided with rectangular grooves inside, and the rectangular grooves are interconnected to form a steel plate channel (6) that runs through the bonding component (1), the coating component (2) and the fixing component (3). One end of the fixing component (3) is provided with a rail gripping end (4) at the corresponding position of the steel plate channel for fixing and conveying the hollow steel plate (5) during the working process, so that the hollow steel plate (5) moves along the steel plate channel (6) during the working process.

2. The graphene grounding strip preparation apparatus according to claim 1, characterized in that, The bonding assembly (1) includes glue tanks (101) disposed on both sides of the steel plate channel (6). An insulation pipe assembly (103) is disposed at one end of the glue tank (101) facing the coating assembly (2). A spray assembly (102) for atomizing and spraying glue during operation is disposed on one side of the glue tank (101) facing the steel plate channel (6). The insulation pipe assembly (103) includes multiple heating pipes spaced apart.

3. The graphene grounding strip preparation apparatus according to claim 2, characterized in that, The insulation pipe assembly (103) is provided with a lateral coating roller (104) at one end facing the coating assembly (2). The lateral coating roller (104) is provided on both sides of the steel plate channel (6). The rotating surface of the lateral coating roller (104) is in contact with the surface of the hollow steel plate (5) during operation.

4. The graphene grounding strip preparation apparatus according to claim 1, characterized in that, The coating assembly (2) includes a coating box (201) disposed on both sides of the steel plate channel (6). A lifting cylinder (203) is disposed inside the coating box (201). The telescopic movable end of the lifting cylinder (203) faces the steel plate channel (6) and a graphite drag frame (204) is disposed at the end of the telescopic movable end. A spring sleeve (205) is disposed on the side of the graphite drag frame (204) away from the steel plate channel (6).

5. The graphene grounding strip preparation apparatus according to claim 4, characterized in that, One end of the spring sleeve (205) is connected to the inner wall of the coating box (201), and a pressed graphite block (206) is provided on the side of the graphite drag frame (204) facing the steel plate channel (6). The surface of the pressed graphite block (206) is in contact with the hollow steel plate (5) during the working process.

6. The graphene grounding strip preparation apparatus according to claim 1, characterized in that, The fixing component (3) includes pressing components disposed on both sides of the steel plate channel (6). A coating component is disposed at one end of the pressing component facing the coating component (2). The coating component includes a lateral arc-shaped rail (301) disposed on the outside of the steel plate channel (6). A rotating shaft (303) is disposed on the inner side of the lateral arc-shaped rail (301). A coating rod (302) is disposed on the rotating shaft (303). A metal mesh layer (304) is wound on the coating rod (302). One end of the metal mesh layer (304) is fixed to the surface of the hollow steel plate (5) during operation.

7. The graphene grounding strip preparation apparatus according to claim 6, characterized in that, A welding machine (305) is provided between the lateral arc-shaped rails (301). One end of the welding machine (305) facing the steel plate channel (6) is connected to a linear welding block (306) for welding the metal mesh layer (304) to the surface of the hollow steel plate (5) during the working process.

8. The graphene grounding strip preparation apparatus according to claim 6, characterized in that, The pressing assembly includes a pressure clamping mechanism (307) disposed between the fixing assembly and the rail gripping end for pressing the perforated steel plate (5) during operation.

9. The graphene grounding strip preparation apparatus according to any one of claims 1 to 8, characterized in that, The rail gripping end (4) includes multiple segmented rail rods (401). A lateral wedge block (402) is provided on the segmented rail rod (401) facing the inner wall of the steel plate channel (6) to fix the hollow steel plate (5) during operation. The lateral wedge block (402) is an inclined block.

10. A method for preparing a graphene grounding strip, characterized in that, The method is implemented using the graphene grounding strip preparation apparatus according to any one of claims 1 to 9, and includes the following steps: S1: Push the perforated steel plate (5) to the bonding component (1) through the rail gripping end (4), and spray glue on the surface of the perforated steel plate (5); then use the graphite block of the coating component (2) to clamp the surface of the perforated steel plate (5); S2: The metal mesh layer (304) in the fixing component (3) is welded and fixed to the hollow steel plate (5) by the fixing component (3), and the metal mesh layer (304) is covered on the surface of the hollow steel plate (5); then the hollow steel plate (5) after film coating is pressed and clamped, and the overlapping edge or end of the metal mesh layer (304) is welded and fixed. S3: After the hollow steel plate (5) is conveyed to the bonding component (1) for glue adhesion, it is conveyed to the coating component (2) and the graphite is scraped and bonded by the metal mesh layer (304) and the concave-convex structure of the hollow steel plate (5); then the hollow steel plate (5) is clamped and fixed by the metal mesh layer (304) again. S4: Release the fixing of the rail gripping end (4) to the hollow steel plate (5), fill the hollow part in the middle of the hollow steel plate (5) with ionized conductive powder and graphite powder, and press the hollow steel plate (5) to make the conductive powder densely filled and complete the molding.

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