Structural parts with insulation and heat dissipation and printing process thereof

Abstract

The present invention relates to the field of printing technology, and in particular to a structural part with insulation and heat dissipation and its printing process, comprising a substrate layer, a graphite layer and a surface layer arranged in sequence from bottom to top, the substrate layer is made of PA, and the surface layer is made of PI material; the bottom layer is made of PA material, the middle layer is a graphite film, and the top layer is made of PI material; through the excellent insulation and puncture resistance of PA itself, when in contact with the device conductor, it can effectively play the role of insulation and puncture resistance. Relying on the efficient thermal conductivity of the graphite layer, the product has the heat dissipation effect of quickly diffusing a single point heat source. In addition, the thermal composite technology is used to tightly combine the substrate layer and the graphite layer, which not only ensures the integrity of the structure, but also simplifies the production process and improves production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of printing, and in particular to a structural component with insulation and heat dissipation and a printing process thereof. Background Art

[0002] Graphite heat sink sticker structural parts, namely thermally conductive graphite sheets, are a highly specialized nano-advanced composite material designed to solve the heat dissipation problem of electronic devices. The material has a unique grain orientation and can conduct heat evenly in two directions. Its lamellar structure perfectly adapts to various complex surfaces inside the mobile phone, thereby ensuring heat dissipation efficiency while achieving effective shielding of heat sources and surrounding components. Graphite heat sink stickers are designed in the form of thin sheets that are easy to install and fit, and can be seamlessly integrated into electronic products, close to the heat source. This design not only reduces heat accumulation, but also reduces the formation of local hot spots by evenly dissipating heat, ensuring the stability and reliability of the mobile phone under high-performance operation.

[0003] In the preparation process of existing graphite sticker structural parts, multiple materials need to be bonded together, but the existing preparation process is relatively complicated, especially when printing patterns are required, which will affect the overall connection stability and heat dissipation effect. Therefore, it is necessary to make new improvements to the preparation of existing graphite structural parts. Summary of the invention

[0004] To solve the above problems, the substrate layer of the present invention is made of PA, and the surface layer is made of PI material; the bottom layer is made of PA material, the middle layer is graphite film, and the top layer is made of PI material; through the excellent insulation and puncture resistance of PA itself, it can effectively play the role of insulation and puncture resistance when in contact with the device conductor. In addition, the use of thermal composite technology not only ensures the integrity of the structure, but also simplifies the production process and improves the production efficiency of the insulating and heat-dissipating structural parts and their printing process.

[0005] The technical solution adopted by the present invention is: a structural part with insulation and heat dissipation, comprising a substrate layer, a graphite layer and a surface layer arranged in sequence from bottom to top, a rough surface is arranged on the side of the graphite layer close to the substrate layer, a powder layer is arranged on the rough surface, micro grooves are arranged on both sides of the rough surface, the powder layer fills the rough surface and the micro grooves, and the density of the powder layer is 8.5~9.2g / cm³; a connecting layer is arranged between the powder layer and the substrate layer, the substrate layer is thermally composited with the powder layer through the connecting layer to form a whole, and the powder layer is a conductive powder layer; a pattern layer is printed on the side of the surface layer opposite to the graphite layer, the surface layer is provided with heat dissipation micropores, one end of the heat dissipation micropores is connected to the graphite layer, and the substrate layer is made of insulating material.

[0006] A further improvement to the above solution is that the powder layer is copper powder, and the particle size of the copper powder is 1-20 μm; the thickness of the powder layer is 50-300 μm.

[0007] A further improvement to the above scheme is that the graphite layer and the copper powder are compositely connected by cold spraying, and the copper powder fills the micro-concave structure of the rough surface during high-speed spraying; the graphite layer and the copper powder are compositely connected and regarded as a series-parallel system, wherein heat is mainly transferred through the graphite layer and the copper layer in the XY direction, and is transferred through the alternating layers of the two in the Z direction. The specific heat transfer value adopts the following formula:

[0008] K_{Z}^{-1}=\frac{f}{K_{Cu}}+\frac{1-f}{K_{GM}^{Z}};

[0009] Among them, K_{Z}^{-1} is the reciprocal of the thermal conductivity of the graphite layer and copper powder in the Z direction, f is the volume fraction of the graphite film, K_{Cu} is the thermal conductivity of copper, and K_{GM}^{Z} is the thermal conductivity of the graphite layer in the Z direction.

[0010] A further improvement to the above scheme is that the powder layer includes a first conductive circuit and a second conductive circuit, the first conductive circuit and the second conductive circuit are arranged opposite to each other, and both the first conductive circuit and the second conductive circuit are signal antennas; and the powder layer is copper-plated graphite powder.

[0011] A further improvement to the above scheme is that the base material layer is made of PA, and the surface layer is made of PI material; the connecting layer is a hot-melt connecting layer, and the base material layer is connected to the connecting layer by hot rolling. The hot-melt connecting layer softens during the hot rolling process and is connected to the powder layer to fill the irregular surface on the powder layer.

[0012] A printing process for a structural part with insulation and heat dissipation, comprising a printing device, wherein the printing device comprises a workbench, a graphite feeding mechanism, a powder forming mechanism, a powder shaping mechanism, a substrate hot pressing mechanism, a surface hot pressing mechanism, a printing mechanism, a die cutting mechanism and a waste mechanism which are sequentially arranged on the workbench;

[0013] The graphite feeding mechanism is used to feed the graphite layer, the powder molding mechanism is used to mold the powder layer on the graphite layer, the powder shaping mechanism is used to roll and shape the formed powder layer, the substrate hot pressing mechanism is used to hot press and composite connect the substrate with one side of the graphite layer, the surface hot pressing mechanism is used to hot press and composite connect the surface layer with the other side of the graphite layer, the printing mechanism is used to print a pattern on the surface layer, the die-cutting mechanism is used to die-cut the graphite structural part into a die-cut part, and the waste mechanism is used to roll up the waste after die-cutting;

[0014] The powder shaping mechanism comprises a powder flattening roller group, a plurality of shaping guide rollers, a transfer conveyor belt, a transfer module, a transfer pressure roller and a transfer lifting assembly arranged on a workbench. The powder flattening roller group is arranged at the rear side of the powder shaping mechanism and is used to flatten the powder layer on the graphite layer; the transfer conveyor belt is arranged between the plurality of shaping guide rollers, the transfer module is arranged at the upper side of the transfer conveyor belt, the transfer module is used to transfer the protective film to the transfer conveyor belt, the transfer pressure roller and the transfer lifting assembly are arranged at the lower side of the transfer conveyor belt relative to each other, and are used to transfer the transfer film on the transfer conveyor belt to the graphite layer and cover the edge of the powder layer;

[0015] The printing process includes the following steps:

[0016] Step S1, powder layer forming: a graphite layer is fed through a graphite feeding mechanism, a guide roller stretches and transmits the graphite layer to a powder forming mechanism, and a powder layer is formed on the graphite layer through the powder forming mechanism;

[0017] Step S2, powder layer shaping: after the powder layer is formed, the graphite layer is fed into the powder shaping mechanism, and the powder shaping mechanism rolls the graphite layer and the powder layer through the powder flattening roller group to roll the powder layer to a specified thickness, and then feeds it between the transfer roller and the transfer lifting assembly, and the protective film is transported under the action of the transfer conveyor belt, and the protective film is transferred to the powder layer under the action of the transfer roller and the transfer lifting assembly;

[0018] Step S3, thermal compounding of the substrate layer: after the powder layer is shaped, the protective film is cooled and shaped during the conveying process, and the substrate layer is unwound and the powder layer is covered. At the same time, the connecting layer is thermally melted by hot rolling so that the substrate layer, the graphite layer, the protective film and the powder layer are thermally compounded into one;

[0019] Step S4, composite connection of the surface layer: after the thermal composite of the substrate layer is completed, the surface layer is composited on one side of the graphite layer by hot roller pressing through a surface hot pressing mechanism;

[0020] Step S5, pattern printing: after the surface layer composite connection is completed, the multi-layer composite material is conveyed toward the printing mechanism, and the printing mechanism prints a pattern or number mark on the surface layer;

[0021] Step S6, die-cutting: After printing is completed, the material is fed into the die-cutting mechanism, and the graphite structural part is die-cut into a specified shape by the die-cutting mechanism, and the material is collected, and the waste material after die-cutting is wound and recycled by the waste material mechanism.

[0022] A further improvement to the above scheme is that the graphite feeding mechanism includes a graphite unwinding assembly, a graphite guide assembly, a graphite correction assembly and a graphite buffer assembly arranged on a workbench; the graphite unwinding assembly unwinds the graphite layer toward the graphite guide assembly, the graphite correction assembly is arranged on one side of the graphite guide assembly, the graphite guide assembly is provided with a plurality of graphite guide rollers, the graphite correction assembly is used for correcting the transmission of graphite layer materials, the graphite buffer assembly is used for transmitting, caching and feeding graphite sheets, and guiding the graphite sheets toward the powder flattening roller group.

[0023] A further improvement to the above scheme is that the powder flattening roller group is provided with two groups of flattening circular rollers with tangent outer diameters, and the two groups of flattening circular rollers cooperate to roll the powder layer and the graphite layer.

[0024] A further improvement to the above scheme is that the transfer module is used to roll a protective film on the transfer conveyor belt, and after semi-curing through transmission, the protective film is transferred to the graphite layer through the cooperation of the transfer pressure roller and the transfer lifting assembly, and the edge of the powder layer is covered.

[0025] A further improvement to the above scheme is that the substrate hot pressing mechanism includes a substrate discharge component, a hot melt film discharge component, a hot pressing composite component, a composite vibration component and a composite extrusion component, the substrate discharge component is used to discharge the substrate to the hot pressing composite component, the hot melt film discharge component is used to discharge the hot melt film to the hot pressing composite component, the hot melt film is located between the substrate layer and the graphite layer, the hot pressing composite component includes a hot composite pressing roller and a hot air spray gun, the hot composite pressing roller is used to roll the substrate layer and the graphite layer, and connect them through the hot melt film formed after the hot melt film is hot-melted; the hot air spray gun is arranged on one side of the hot composite pressing roller, and sprays hot air towards the hot melt film, and the hot melt film is melted and softened by the hot air, and then enters the hot composite pressing roller for rolling, so that the substrate layer and the graphite layer are connected; the composite vibration component is arranged on a workbench.

[0026] A further improvement to the above scheme is that the heat composite pressure roller is arranged on a composite vibration and leveling component, and the composite vibration and leveling component includes a vibration plate, a vibration motor arranged on the vibration plate, and a shock-absorbing spring; the vibration plate is connected to the workbench through the shock-absorbing spring, and the height direction of the vibration plate is relatively parallel to the axial direction of the shock-absorbing spring; the heat composite pressure roller is arranged on the vibration plate, and the vibration motor is used for high-frequency vibration of the vibration plate to drive the heat composite pressure roller to vibrate the hot melt film evenly after heat melting;

[0027] A further improvement to the above scheme is that the surface hot pressing mechanism includes a surface discharge component, a surface guide component, a connecting coating component and a surface rolling component; the surface discharge component is used for discharging the surface layer, and the surface guide component is used for guiding the surface layer toward the surface rolling component; the connecting coating component is used for coating an adhesive material on the upper surface of the graphite layer, and the surface rolling component is used for roller-connecting the surface layer to the graphite layer.

[0028] A further improvement to the above scheme is that the printing mechanism includes a printing turntable, a plurality of printing stations surrounding the outer circumference of the printing turntable, and a printing and drying component, the printing turntable is used to drive the transmission of multi-layer composite materials, the printing stations are used to print patterns or marks on the materials, and the printing and drying component is used to dry the patterns or marks.

[0029] A further improvement to the above scheme is that the die-cutting mechanism includes a die-cutting fixed roller, a die-cutting circular knife and a finished product winding assembly, the die-cutting fixed roller is tangent to the outer diameter of the die-cutting circular knife, the printing and drying assembly is used to transmit the dried material toward the die-cutting circular knife, the die-cutting fixed roller is used to cooperate with the die-cutting circular knife to cut the material to form a graphite structural part, and the waste mechanism is used to roll up the cut waste.

[0030] The beneficial effects of the present invention are:

[0031] Compared with the existing graphite structural parts, the present invention is used in electronic components and digital products. The graphite layer is used as the core heat dissipation layer. By utilizing its excellent thermal conductivity, it can quickly disperse heat to the entire graphite structural part structure, and achieve heat exchange with the external environment through the carefully arranged heat dissipation micropores on the surface layer, effectively reducing the temperature of the graphite structural part and the surface of the attached object, and extending the service life of the equipment. The rough surface design of the graphite layer surface and the powder layer filling on it not only enhance the interlayer bonding force and ensure the stability of the structure, but also further optimize the heat conduction path through the high-density conductive powder layer (8.5~9.2g / cm³) and improve the heat dissipation efficiency. At the same time, the setting of micro grooves increases the surface area of ​​heat conduction, provides more transmission channels for heat, and further improves the heat dissipation performance. The substrate layer is made of insulating material, which effectively isolates the electrical signal, prevents possible short circuit risks, and ensures the safety of graphite structural parts in electronic products, electrical equipment and other occasions. The connection layer adopts thermal composite technology to closely combine the substrate layer with the powder layer, which not only ensures the integrity of the structure, but also simplifies the production process and improves production efficiency. The pattern layer on the surface can be customized according to needs to achieve a perfect combination of beauty and practicality, while the design of the heat dissipation micropores takes into account both heat dissipation and aesthetics.

[0032] The printing equipment realizes a close and uniform combination between the graphite layer and the powder layer through the continuous operation of graphite feeding, powder molding and shaping mechanism, which not only enhances the insulation and heat dissipation performance of the graphite structural parts, but also ensures the stability and consistency of product quality. During the powder shaping process, the combination of the powder flattening roller group and the transfer technology effectively avoids the unevenness and shedding of the powder layer, and improves the durability and reliability of the product. The double-sided hot pressing composite technology of the substrate and the surface layer ensures the firm combination of the graphite structural parts with the substrate and the surface layer, and enhances the overall strength and weather resistance of the graphite structural parts. This step not only simplifies the processing complexity of traditional multi-layer structural materials, but also improves production efficiency and reduces production costs. The high-precision operation of the printing mechanism makes the printing quality of the pattern reach the industry-leading level, with clear patterns and bright colors, meeting the market demand for high-quality printed graphite structural parts. The precise die-cutting of the die-cutting mechanism further improves the product yield and aesthetics, and reduces the scrap rate. The automatic winding design of the waste mechanism realizes the automatic processing of waste in the production process, reduces manual intervention, and improves the automation level and environmental protection performance of the production line.

[0033] The printing process uses a fine powder layer forming step and the coordinated operation of graphite feeding and powder forming mechanisms to ensure that the powder layer is evenly and accurately attached to the graphite layer, laying a solid foundation for subsequent processing. The roller pressing technology and protective film transfer process in the powder layer shaping process not only effectively control the thickness of the powder layer, but also achieve efficient bonding of the protective film, enhancing the product's protective performance and durability.

[0034] During the thermal compounding process of the substrate layer, the innovative hot rolling technology causes the connection layer to melt quickly, achieving a firm bond between the substrate layer, graphite layer, protective film and powder layer, significantly improving the overall strength and structural stability of the product. In the subsequent surface layer composite connection step, the surface layer is further seamlessly compounded onto the graphite layer through a hot rolling process, giving the product excellent appearance texture and functional characteristics. The introduction of the pattern printing link provides the product with rich personalization and recognition. The high-precision printing mechanism ensures the clarity, accuracy and beauty of the pattern or number mark. The effective integration of die-cutting and waste recycling systems not only realizes the rapid and accurate forming of graphite structural parts, but also greatly reduces material waste in the production process, improves resource utilization, and conforms to the modern green manufacturing concept. The present invention provides strong technical support for the large-scale, high-quality production of printed products through a high degree of automation, precision and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the structure of the structural member with insulation and heat dissipation of the present invention;

[0036] Figure 2It is a three-dimensional schematic diagram of the printing device of the present invention;

[0037] Figure 3 for Figure 2 A three-dimensional schematic diagram of another perspective of the printing device;

[0038] Figure 4 for Figure 2 A schematic diagram of the main view of the printing equipment;

[0039] Figure 5 for Figure 4 A is an enlarged schematic diagram;

[0040] Figure 6 for Figure 4 The enlarged schematic diagram of point B in FIG.

[0041] Figure 7 for Figure 4 The enlarged schematic diagram of point C in FIG.

[0042] Figure 8 for Figure 4 The enlarged schematic diagram of D in FIG.

[0043] Fig. 9 for Figure 4 The enlarged schematic diagram of point E in FIG.

[0044] Fig.10 It is a schematic diagram of the preparation process of the structural member with insulation and heat dissipation of the present invention.

[0045] Description of reference numerals: substrate layer 10, graphite layer 20, surface layer 30, powder layer 40, connecting layer 401, first conductive circuit 402, second conductive circuit 403;

[0046] Workbench 1, graphite feeding mechanism 2, graphite unwinding assembly 21, graphite guiding assembly 22, graphite deviation correcting assembly 23, graphite buffer assembly 24, powder forming mechanism 3;

[0047] Powder shaping mechanism 4, powder flattening roller group 41, flattening round roller 411, shaping guide roller 42, transfer conveyor belt 43, transfer module group 44, transfer pressing roller 45, transfer lifting assembly 46;

[0048] Base material hot pressing mechanism 5, base material discharging component 51, hot melt film discharging component 52, hot pressing composite component 53, hot composite pressing roller 531, hot air spray gun 532, composite vibration component 54, vibration plate 541, vibration motor 542, shock absorbing spring 543, composite extrusion component 55;

[0049] Surface hot pressing mechanism 6, surface material discharge assembly 61, surface guide assembly 62, connection coating assembly 63, surface roller pressing assembly 64;

[0050] Printing mechanism 7, printing turntable 71, printing station 72, printing drying component 73;

[0051] Die-cutting mechanism 8, die-cutting fixed roller 81, die-cutting circular knife 82, finished product winding component 83, and waste mechanism 9. DETAILED DESCRIPTION

[0052] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0053] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Figure 1 to Figure 10As shown, in one embodiment of the present invention, a structural part with insulation and heat dissipation is involved, including a substrate layer 10, a graphite layer 20 and a surface layer 30 arranged in sequence from bottom to top, the graphite layer 20 is provided with a rough surface on a side close to the substrate layer 10, a powder layer 40 is provided on the rough surface, micro grooves are provided on both sides of the rough surface, the powder layer 40 fills the rough surface and the micro grooves, and the density of the powder layer 40 is 8.5~9.2g / cm³; a connecting layer 401 is provided between the powder layer 40 and the substrate layer 10, the substrate layer 10 is thermally composited with the powder layer 40 through the connecting layer 401 to form a whole, and the powder layer 40 is a conductive powder layer 40; the surface layer 30 is printed with a pattern layer on the side opposite to the graphite layer 20, the surface layer 30 is provided with heat dissipation micropores, one end of the heat dissipation micropores is connected to the graphite layer 20, and the substrate layer 10 is made of insulating material. The present invention is used in electronic components and digital products. The graphite layer 20 is used as the core heat dissipation layer. By utilizing its excellent thermal conductivity, it can quickly disperse heat to the entire graphite structure, and achieve heat exchange with the external environment through the carefully arranged heat dissipation micropores on the surface layer 30, effectively reducing the temperature of the graphite structure and the surface of the attached object, and extending the service life of the equipment. The rough surface design of the graphite layer 20 and the filling of the powder layer 40 thereon not only enhance the interlayer bonding force and ensure the stability of the structure, but also further optimize the heat conduction path through the high-density conductive powder layer 40 (8.5~9.2g / cm³), thereby improving the heat dissipation efficiency. At the same time, the setting of the micro grooves increases the surface area of ​​heat conduction, provides more transmission channels for heat, and further improves the heat dissipation performance. The substrate layer 10 is made of insulating material, which effectively isolates the electrical signal, prevents the possible risk of short circuit, and ensures the safety of the graphite structure in electronic products, electrical equipment and other occasions. The connection layer 401 uses thermal composite technology to tightly combine the substrate layer 10 and the powder layer 40, which not only ensures the integrity of the structure, but also simplifies the production process and improves production efficiency. The pattern layer on the surface layer 30 can be customized according to needs to achieve a perfect combination of beauty and practicality, and the design of the heat dissipation micropores takes into account both heat dissipation and beauty.

[0055] The powder layer 40 is copper powder, and the particle size of the copper powder is 1~20μm; the thickness of the powder layer 40 is 50~300μm. In this embodiment, the fine copper powder particles effectively improve the thermal conductivity efficiency, promote the rapid exchange of heat between the graphite structural parts and the external environment, and significantly enhance the heat dissipation performance of the graphite structural parts. Reasonable thickness design of the powder layer 40 ensures that neither the cost and weight will be increased due to excessive thickness, nor the heat dissipation effect will be weakened due to excessive thinness, achieving a good balance between performance and cost. The high conductivity of copper powder also provides graphite structural parts with potential electromagnetic shielding or enhanced signal transmission capabilities in specific application scenarios, further expanding its application areas.

[0056] The graphite layer 20 and the copper powder are compositely connected by cold spraying, and the copper powder fills the micro-concave structure of the rough surface during high-speed spraying; the graphite layer 20 and the copper powder are compositely connected and regarded as a series-parallel system, wherein heat is mainly transferred through the graphite layer 20 and the copper layer in the XY direction, and is transferred through the alternating layers of the two in the Z direction. The specific heat transfer value is expressed by the following formula:

[0057] K_{Z}^{-1}=\frac{f}{K_{Cu}}+\frac{1-f}{K_{GM}^{Z}};

[0058] Wherein, K_{Z}^{-1} is the inverse of the thermal conductivity of the graphite layer 20 in the Z direction after composite connection with copper powder, f is the volume fraction of the graphite film, K_{Cu} is the thermal conductivity of copper, and K_{GM}^{Z} is the thermal conductivity of the graphite layer 20 in the Z direction.

[0059] In the above embodiment, when the cold spraying technology is used to composite the copper powder and the graphite layer 20, the thickness of the powder layer 40 is set to 100 microns and the thickness of the graphite layer 20 is set to 200 microns, which can effectively achieve close bonding between materials and optimize heat transfer. Assuming that the volume fraction f of the graphite film is 0.4 (that is, the graphite layer 20 occupies 40% of the total volume), the thermal conductivity of copper K_{Cu} takes a common value of 400 W / (m·K), and the thermal conductivity of the graphite layer 20 in the Z direction K_{GM}^{Z} is set to 100 W / (m·K). According to the given heat transfer formula, the inverse of the equivalent thermal conductivity of the composite material in the Z direction K_{Z}^{-1} can be calculated to be 0.0025+0.006 =0.0085 W·m / (K·m²), and then K_{Z} is obtained to be about 117.65 W / (m·K). This result indicates that in the Z direction, the composite material exhibits high thermal conductivity, which is conducive to the rapid transfer of heat and meets the needs of specific thermal management applications.

[0060] In another embodiment, the powder layer 40 includes a first conductive circuit 402 and a second conductive circuit 403, the first conductive circuit 402 and the second conductive circuit 403 are arranged oppositely, and the first conductive circuit 402 and the second conductive circuit 403 are both signal antennas; the powder layer 40 is copper-plated graphite powder. Copper-plated graphite powder not only provides excellent electrical conductivity, ensuring the stability and efficiency of antenna signal transmission, but also the high thermal conductivity of graphite effectively promotes the rapid diffusion of heat, which complements the insulation and heat dissipation design of the graphite structural parts, and further improves the overall thermal management efficiency. The first and second conductive circuits 403 arranged oppositely as signal antennas not only optimize space utilization, but also may realize antenna array effects in specific application scenarios, enhance signal reception and transmission capabilities, and broaden the scope of application and performance boundaries of graphite structural parts. This embodiment integrates conductive materials, thermal management and antenna technology, and provides more reliable and efficient technical support for the application of printed graphite structural parts in the fields of Internet of Things, intelligent tracking, wireless communication, etc.

[0061] The substrate layer 10 is made of PA, and the surface layer 30 is made of PI material; the connection layer 401 is a hot melt connection layer 401, and the substrate layer 10 is connected to the connection layer 401 by hot rolling. The hot melt connection layer 401 softens during the hot rolling process and connects to the powder layer 40 to fill the irregular surface on the powder layer 40. In this embodiment, the substrate layer 10 is made of polyamide (PA) material, which ensures the toughness and good mechanical strength of the graphite structural parts, and lays a solid foundation for the overall performance of the graphite structural parts. The surface layer 30 is made of polyimide (PI) material, which not only improves the high temperature resistance, chemical corrosion resistance and electrical insulation performance of the graphite structural parts, but also enhances the wear resistance and aging resistance of its surface, effectively extending the service life of the graphite structural parts. The introduction of the hot melt connection layer 401 achieves seamless connection with the substrate layer 10 and the powder layer 40 through a hot rolling process. During this process, the connection layer 401 softens and penetrates into the irregular surface of the powder layer 40, achieving efficient filling and tight bonding, greatly improving the flatness and overall consistency of the graphite structural parts. This connection method not only enhances the structural strength of the graphite structural parts, but also optimizes the heat conduction path, which helps to improve the heat dissipation efficiency of the graphite structural parts.

[0062] See also Figure 2~Figure 10As shown, the printing device includes a workbench 1, a graphite feeding mechanism 2, a powder molding mechanism 3, a powder shaping mechanism 4, a substrate hot pressing mechanism 5, a surface hot pressing mechanism 6, a printing mechanism 7, a die-cutting mechanism 8 and a waste mechanism 9 which are sequentially arranged on the workbench 1; the graphite feeding mechanism 2 is used to feed the graphite layer 20, the powder molding mechanism 3 is used to shape the powder layer 40 on the graphite layer 20, the powder shaping mechanism 4 is used to roll and shape the formed powder layer 40, the substrate hot pressing mechanism 5 is used to hot-press and compositely connect the substrate with one side of the graphite layer 20, the surface hot pressing mechanism 6 is used to hot-press and compositely connect the surface layer 30 with the other side of the graphite layer 20, the printing mechanism 7 is used to print a pattern on the surface layer 30, the die-cutting mechanism 8 is used to die-cut the graphite structural part into a die-cut part, and the waste mechanism 9 Used to roll up the waste after die-cutting; the powder shaping mechanism 4 includes a powder flattening roller group 41, a plurality of shaping guide rollers 42, a transfer conveyor belt 43, a transfer module 44, a transfer pressure roller 45 and a transfer lifting assembly 46 arranged on the workbench 1, the powder flattening roller group 41 is arranged on the rear side of the powder shaping mechanism 3, and is used to flatten the powder layer 40 on the graphite layer 20; the transfer conveyor belt 43 is arranged between the plurality of shaping guide rollers 42, the transfer module 44 is arranged on the upper side of the transfer conveyor belt 43, the transfer module 44 is used to transfer the protective film to the transfer conveyor belt 43, the transfer pressure roller 45 and the transfer lifting assembly 46 are arranged on the lower side of the transfer conveyor belt 43 relative to each other, and are used to transfer the transfer film on the transfer conveyor belt 43 to the graphite layer 20, and cover the edge of the powder layer 40. In this embodiment, the printing equipment realizes a close and uniform combination between the graphite layer 20 and the powder layer 40 through the continuous operation of graphite feeding, powder molding and shaping mechanism, which not only enhances the insulation and heat dissipation performance of the graphite structural parts, but also ensures the stability and consistency of product quality. During the powder shaping process, the combination of the powder flattening roller group 41 and the transfer technology effectively avoids the unevenness and shedding problems of the powder layer 40, and improves the durability and reliability of the product. The double-sided hot pressing composite technology of the substrate and the surface layer 30 ensures the firm combination of the graphite structural parts with the substrate and the surface layer 30, and enhances the overall strength and weather resistance of the graphite structural parts. This step not only simplifies the processing complexity of traditional multilayer structural materials, but also improves production efficiency and reduces production costs. The high-precision operation of the printing mechanism 7 makes the printing quality of the pattern reach the industry-leading level, the pattern is clear and the colors are bright, meeting the market demand for high-quality printed graphite structural parts. The precise die-cutting of the die-cutting mechanism 8 further improves the product yield and aesthetics, and reduces the scrap rate. The automatic winding design of the waste mechanism 9 realizes the automatic treatment of waste in the production process, reduces manual intervention, and improves the automation level and environmental protection performance of the production line.

[0063] The graphite feeding mechanism 2 includes a graphite unwinding assembly 21, a graphite guide assembly 22, a graphite deviation correction assembly 23 and a graphite buffer assembly 24 arranged on the workbench 1; the graphite unwinding assembly 21 unwinds the graphite layer 20 toward the graphite guide assembly 22, the graphite deviation correction assembly 23 is arranged on one side of the graphite guide assembly 22, the graphite guide assembly 22 is provided with a plurality of graphite guide rollers 221, the graphite deviation correction assembly 23 is used for deviation correction transmission of the graphite layer 20 material, the graphite buffer assembly 24 is used for transmitting and caching the graphite sheet, and guiding the graphite sheet toward the powder flattening roller group 41. In this embodiment, the graphite unwinding assembly 21 is used to ensure that the graphite layer 20 is smoothly and continuously unfolded toward the graphite guide assembly 22, which effectively reduces manual intervention and improves production efficiency. The multiple guide rollers equipped with the graphite guide assembly 22 not only optimize the travel path of the graphite layer 20, but also enhance the stability of transmission and the accuracy of guidance. The introduction of the graphite correction component 23 can monitor and automatically adjust the deviation of the graphite layer 20 during the transmission process in real time, ensure the precise alignment of the graphite sheets, avoid printing quality problems caused by material deviation, and significantly improve the yield and consistency of printed products. As a buffer link, the graphite buffer component 24 effectively balances the speed difference between the front and back processes, ensures the stable supply and orderly guidance of the graphite sheets before feeding to the powder flattening roller group 41, and further improves the fluency and efficiency of the overall production line.

[0064] In the above embodiment, the powder forming mechanism 3 is a cold spraying mechanism, and the copper powder is sprayed on the graphite layer by cold spraying.

[0065] In another embodiment, the powder forming mechanism 3 is a printing mechanism, and the copper powder is printed on the graphite layer by printing.

[0066] The powder flattening roller group 41 is provided with two groups of flattening rollers 411 with tangent outer diameters, and the two groups of flattening rollers 411 cooperate to roll the powder layer 40 and the graphite layer 20. In this embodiment, the two groups of flattening rollers 411 with tangent outer diameters work together to accurately roll the powder layer 40 and the graphite layer 20 on the printing device, ensuring uniform compaction of the powder layer 40 and the graphite layer 20, effectively avoiding printing quality problems caused by uneven compaction, such as color difference, blur, etc., and significantly improving the yield and quality stability of printed products. The design of the round rollers with tangent outer diameters optimizes the contact area and pressure distribution during the rolling process, making the rolling more delicate and uniform, reducing material waste, and improving production efficiency.

[0067] The transfer module 44 is used to roll a protective film on the transfer conveyor belt 43, and after semi-curing through transmission, the protective film is transferred to the graphite layer 20 through the transfer pressure roller 45 and the transfer lifting assembly 46, and the edge of the powder layer 40 is covered. In this embodiment, the protective film is evenly applied to the transfer conveyor belt 43 by accurately controlling the roller printing process, ensuring the stable transmission and precise positioning of the material. The design of the semi-curing stage effectively promotes the initial adhesion between the protective film and the substrate. Through the close cooperation of the transfer pressure roller 45 and the lifting assembly, the seamless transfer of the protective film from the conveyor belt to the graphite layer 20 is achieved, which not only ensures the accuracy and uniformity of the transfer, but also greatly reduces the generation of bubbles and wrinkles. It can cover the edge of the powder layer 40, enhance the edge protection ability of the product, and improve the overall durability and aesthetics of the product.

[0068] The substrate hot pressing mechanism 5 includes a substrate feeding component 51, a hot melt film feeding component 52, a hot pressing composite component 53, a composite vibration component 54 and a composite extrusion component 55. The substrate feeding component 51 is used to feed the substrate to the hot pressing composite component 53, and the hot melt film feeding component 52 is used to feed the hot melt film to the hot pressing composite component 53. The hot melt film is located between the substrate layer 10 and the graphite layer 20. The hot pressing composite component 53 includes a hot composite pressing roller 531 and a hot air spray gun 532. The hot composite pressing roller 531 is used to roll the substrate layer 10 and the graphite layer 20, and connect them through the hot melt film formed after the hot melt film is hot-melted; the hot air spray gun 532 is arranged on one side of the hot composite pressing roller 531, and sprays hot air toward the hot melt film, and the hot melt film is melted and softened by the hot air, and then enters the hot composite pressing roller 531 for rolling, so that the substrate layer 10 and the graphite layer 20 are connected; the composite vibration component 54 is arranged on the workbench 1. In this embodiment, efficient hot melt lamination between the substrate and the graphite layer 20 is achieved through the coordinated work of various components. The precise control of the substrate discharge and the hot melt film discharge ensures the continuity and stability of the lamination process and reduces material waste. The combined action of the hot lamination pressure roller 531 and the hot air spray gun 532 not only accelerates the softening and melting of the hot melt film, but also promotes the close adhesion between the substrate and the graphite layer 20, thereby enhancing the structural strength and thermal conductivity of the composite material. The setting of the composite vibration component 54 further optimizes the flatness and uniformity of the composite layer surface and eliminates potential bubbles and defects.

[0069] The hot composite pressure roller 531 is arranged on the composite vibration component 54, and the composite vibration component 54 includes a vibration plate 541, a vibration motor 542 arranged on the vibration plate 541, and a shock-absorbing spring 543; the vibration plate 541 is connected to the workbench 1 through the shock-absorbing spring 543, and the height direction of the vibration plate 541 is relatively parallel to the axial direction of the shock-absorbing spring 543; the hot composite pressure roller 531 is arranged on the vibration plate 541, and the vibration motor 542 is used to vibrate the vibration plate 541 at a high frequency to drive the hot composite pressure roller 531 to vibrate the hot melt film after heat melting evenly. In this embodiment, the vibration plate 541 is driven by the vibration motor 542 to vibrate at a high frequency, and the hot composite pressure roller 531 vibrates accordingly, which effectively promotes the uniform distribution and penetration of the hot melt film on the surface of the material, eliminates bubbles and wrinkles that may be generated in the traditional composite process, and greatly improves the composite quality. At the same time, the ingenious design of the shock-absorbing spring 543 not only effectively isolates the impact of vibration on the main body of the equipment, ensuring the stable operation of the equipment, but also adjusts the flexibility of the vibration plate 541 according to actual needs, further enhancing the flexibility and adaptability of the composite process.

[0070] The surface hot pressing mechanism 6 includes a surface discharge component 61, a surface guide component 62, a connection coating component 63 and a surface rolling component 64; the surface discharge component 61 is used to discharge the surface layer 30, and the surface guide component 62 is used to guide the surface layer 30 toward the surface rolling component 64; the connection coating component 63 is used to coat the upper surface of the graphite layer 20 with adhesive material, and the surface rolling component 64 is used to roll and connect the surface layer 30 with the graphite layer 20. In this embodiment, the uniformity and continuity of the surface layer 30 material are ensured by the precise feeding of the surface discharge component 61, laying a solid foundation for subsequent processing. The precise guidance of the surface guide component 62 effectively adjusts the path of the surface layer 30, ensures its precise docking with the surface rolling component 64, and reduces the risk of deviation and wrinkles. The connection coating component 63 evenly coats the adhesive material on the graphite layer 20, which not only enhances the bonding force between the surface layer 30 and the graphite layer 20, but also ensures the uniformity of the adhesive layer, thereby improving the overall quality and stability of the finished product. The efficient rolling operation of the surface layer rolling component 64 achieves a tight connection between the surface layer 30 and the graphite layer 20, thereby ensuring the firmness and durability of the product structure.

[0071] The printing mechanism 7 includes a printing turntable 71, a plurality of printing stations 72 surrounding the outer periphery of the printing turntable 71, and a printing drying component 73. The printing turntable 71 is used to drive the transmission of multi-layer composite materials, the printing station 72 is used to print patterns or marks on the materials, and the printing drying component 73 is used to dry the patterns or marks. Specifically, the die-cutting mechanism 8 includes a die-cutting fixed roller 81, a die-cutting circular knife 82, and a finished product winding component 83. The die-cutting fixed roller 81 is tangent to the outer diameter of the die-cutting circular knife 82. The printing drying component 73 is used to transmit the dried material toward the die-cutting circular knife 82. The die-cutting fixed roller 81 is used to cooperate with the die-cutting circular knife 82 to cut the material into a graphite structural part, and the waste mechanism 9 is used to roll up the cut waste. In this embodiment, the printing turntable 71 and the plurality of printing stations 72 arranged around it work together to ensure the stability and precise positioning of the multi-layer composite material during the transmission process, providing a solid foundation for the printing of high-precision patterns or marks. The immediate intervention of the printing and drying component 73 effectively shortens the drying time of the pattern or mark, reduces the blurring or falling off caused by uneven humidity, and enhances the durability and aesthetics of the printed product. The die-cutting mechanism 8 achieves fast and accurate cutting of the dried material through the precise cooperation between the die-cutting fixed roller 81 and the die-cutting circular knife 82, and converts it into a finished graphite structural part, which significantly improves the automation level and cutting accuracy of the production line. At the same time, the waste mechanism 9 timely rewinds the cut waste, optimizes the environmental management of the production site, reduces material waste, and improves resource utilization efficiency.

[0072] The printing process includes the following steps: step S1, powder layer 40 molding: the graphite layer 20 is loaded through the graphite feeding mechanism 2, the guide roller stretches the graphite layer 20 and transfers it to the powder molding mechanism 3, and the powder molding mechanism 3 molds the powder layer 40 on the graphite layer 20; step S2, powder layer 40 shaping: after the powder layer 40 is shaped, the graphite layer 20 is sent to the powder shaping mechanism 4, the powder shaping mechanism 4 rolls the graphite layer 20 and the powder layer 40 through the powder flattening roller group 41 to roll the powder layer 40 to a specified thickness, and then sends it between the transfer roller 45 and the transfer lifting assembly 46, and the protective film is transported under the action of the transfer conveyor belt 43, and the protective film is transferred to the powder layer 40 under the action of the transfer roller 45 and the transfer lifting assembly 46; step S3, substrate layer 10 thermal compounding: after the powder layer 40 is shaped, the graphite layer 20 is sent to the powder shaping mechanism 4, and the powder shaping mechanism 4 rolls the graphite layer 20 and the powder layer 40 through the powder flattening roller group 41 to roll the powder layer 40 to a specified thickness, and then the powder layer 40 is sent to between the transfer roller 45 and the transfer lifting assembly 46, and the protective film is transported under the action of the transfer conveyor belt 43, and the protective film is transferred to the powder layer 40 under the action of the transfer roller 45 and the transfer lifting assembly 46; step S3, substrate layer 10 thermal compounding: after the powder layer 40 is shaped, the substrate layer 10 is thermally compounded. During the process, the protective film is cooled and shaped, and the substrate layer 10 is unwound and the powder layer 40 is covered. At the same time, the connecting layer 401 is melted by hot rolling so that the substrate layer 10 and the graphite layer 20, the protective film and the powder layer 40 are thermally composited to form a whole; step S4, composite connection of the surface layer 30: after the thermal composite of the substrate layer 10 is completed, the surface layer 30 is composited on one side of the graphite layer 20 by the surface hot pressing mechanism 6; step S5, pattern printing: after the composite connection of the surface layer 30 is completed, the multi-layer composite material is conveyed to the printing mechanism 7, and the printing mechanism 7 prints a pattern or number mark on the surface layer 30; step S6, die-cutting: after printing is completed, the material is fed to the die-cutting mechanism 8, and the graphite structural part is die-cut into a specified shape by the die-cutting mechanism 8, and the material is collected, and the waste mechanism 9 winds and recycles the waste after die-cutting.

[0073] The printing process ensures that the powder layer 40 is evenly and accurately attached to the graphite layer 20 by using the coordinated operation of graphite feeding and powder forming mechanism 3 through the fine powder layer 40 forming step, laying a solid foundation for subsequent processing. The rolling technology and protective film transfer process in the powder layer 40 shaping link not only effectively control the thickness of the powder layer 40, but also realize the efficient bonding of the protective film, enhancing the protective performance and durability of the product. In the thermal composite process of the substrate layer 10, the innovative hot rolling technology causes the connecting layer 401 to melt quickly, realizes the firm combination between the substrate layer 10, the graphite layer 20, the protective film and the powder layer 40, and significantly improves the overall strength and structural stability of the product. The subsequent surface layer 30 composite connection step further uses the hot rolling process to seamlessly composite the surface layer 30 on the graphite layer 20, giving the product excellent appearance texture and functional characteristics. The introduction of the pattern printing link provides the product with rich personalization and recognition, and through the high-precision printing mechanism 7, ensures the clarity, accuracy and beauty of the pattern or number mark. The effective integration of die-cutting and waste recycling systems not only achieves rapid and accurate forming of graphite structural parts, but also greatly reduces material waste in the production process, improves resource utilization, and conforms to the modern green manufacturing concept. The present invention provides strong technical support for the large-scale, high-quality production of printed products through high automation, precision and environmental protection.

[0074] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A printing process for a structural part with insulation and heat dissipation, characterized in that: The structural member with insulation and heat dissipation comprises a substrate layer, a graphite layer and a surface layer arranged in sequence from bottom to top, the graphite layer is provided with a rough surface on one side close to the substrate layer, a powder layer is provided on the rough surface, micro grooves are provided on both sides of the rough surface, the powder layer fills the rough surface and the micro grooves, and the density of the powder layer is 8.5-9.2 g / cm³; a connecting layer is provided between the powder layer and the substrate layer, the substrate layer is thermally compositely connected to the powder layer through the connecting layer to form an integral body, and the powder layer is a conductive powder layer; a pattern layer is printed on the side of the surface layer opposite to the graphite layer, the surface layer is provided with heat dissipation micropores, one end of the heat dissipation micropores is connected to the graphite layer, and the substrate layer is made of insulating material; The printing process is implemented by a printing device, which includes a workbench, a graphite feeding mechanism, a powder forming mechanism, a powder shaping mechanism, a substrate hot pressing mechanism, a surface hot pressing mechanism, a printing mechanism, a die cutting mechanism and a waste mechanism which are sequentially arranged on the workbench; The graphite feeding mechanism is used to feed the graphite layer, the powder forming mechanism is used to form the powder layer on the graphite layer, the powder shaping mechanism is used to roll and shape the formed powder layer, the substrate hot pressing mechanism is used to hot press and composite connect the substrate with one side of the graphite layer, the surface hot pressing mechanism is used to hot press and composite connect the surface layer with the other side of the graphite layer, and the waste mechanism is used to roll up the waste after die cutting; The powder shaping mechanism comprises a powder flattening roller group, a plurality of shaping guide rollers, a transfer conveyor belt, a transfer module, a transfer pressure roller and a transfer lifting assembly arranged on a workbench. The powder flattening roller group is arranged at the rear side of the powder shaping mechanism and is used to flatten the powder layer on the graphite layer; the transfer conveyor belt is arranged between the plurality of shaping guide rollers, the transfer module is arranged at the upper side of the transfer conveyor belt, the transfer module is used to transfer the protective film to the transfer conveyor belt, the transfer pressure roller and the transfer lifting assembly are arranged at the lower side of the transfer conveyor belt relative to each other, and are used to transfer the transfer film on the transfer conveyor belt to the graphite layer and cover the edge of the powder layer; The printing process includes the following steps: Step S1, powder layer forming: a graphite layer is fed through a graphite feeding mechanism, a guide roller stretches and transmits the graphite layer to a powder forming mechanism, and a powder layer is formed on the graphite layer through the powder forming mechanism; Step S2, powder layer shaping: after the powder layer is formed, the graphite layer is fed into the powder shaping mechanism, and the powder shaping mechanism rolls the graphite layer and the powder layer through the powder flattening roller group to roll the powder layer to a specified thickness, and then feeds it between the transfer roller and the transfer lifting assembly, and the protective film is transported under the action of the transfer conveyor belt, and the protective film is transferred to the powder layer under the action of the transfer roller and the transfer lifting assembly; Step S3, thermal compounding of the substrate layer: after the powder layer is shaped, the protective film is cooled and shaped during the conveying process, and the substrate layer is unwound and the powder layer is covered. At the same time, the connecting layer is thermally melted by hot rolling so that the substrate layer, the graphite layer, the protective film and the powder layer are thermally compounded into one; Step S4, composite connection of the surface layer: after the thermal composite of the substrate layer is completed, the surface layer is composited on one side of the graphite layer by hot roller pressing through a surface hot pressing mechanism; Step S5, pattern printing: after the surface layer is composited and connected, the multi-layer composite material is conveyed toward the printing mechanism, and the printing mechanism prints the pattern on the surface layer; Step S6, die-cutting: After printing is completed, the material is fed into the die-cutting mechanism, and the graphite structural part is die-cut into a specified shape by the die-cutting mechanism, and the material is collected, and the waste material after die-cutting is wound and recycled by the waste material mechanism.

2. The printing process of the structural member with insulation and heat dissipation according to claim 1, characterized in that: The powder layer is copper powder, and the particle size of the copper powder is 1-20 μm; the thickness of the powder layer is 50-300 μm.

3. The printing process of the structural member with insulation and heat dissipation according to claim 2, characterized in that: The graphite layer and the copper powder are compositely connected by cold spraying, and the copper powder fills the micro-concave structure of the rough surface during high-speed spraying; the graphite layer and the copper powder are compositely connected and regarded as a series-parallel system, in which heat is transferred through the graphite layer and the copper layer in the XY direction, and through the alternating layers of the two in the Z direction. The specific heat transfer value adopts the following formula: K_{Z}^{-1}=\frac{f}{K_{Cu}}+\frac{1-f}{K_{GM}^{Z}}; Among them, K_{Z}^{-1} is the reciprocal of the thermal conductivity of the graphite layer and copper powder in the Z direction, f is the volume fraction of the graphite layer, K_{Cu} is the thermal conductivity of copper, and K_{GM}^{Z} is the thermal conductivity of the graphite layer in the Z direction.

4. The printing process of the structural member with insulation and heat dissipation according to claim 1 is characterized in that: The powder layer comprises a first conductive circuit and a second conductive circuit, the first conductive circuit and the second conductive circuit are arranged opposite to each other, and both the first conductive circuit and the second conductive circuit are signal antennas; the powder layer is copper-plated graphite powder.

5. The printing process of the structural member with insulation and heat dissipation according to claim 1, characterized in that: The base material layer is made of PA, and the surface layer is made of PI material; the connecting layer is a hot-melt connecting layer, and the base material layer is connected to the connecting layer by hot rolling. The hot-melt connecting layer softens during the hot rolling process and is connected to the powder layer to fill the irregular surface on the powder layer.

6. The printing process of the structural member with insulation and heat dissipation according to claim 1, characterized in that: The graphite feeding mechanism includes a graphite unwinding assembly, a graphite guide assembly, a graphite correction assembly and a graphite buffer assembly arranged on a workbench; the graphite unwinding assembly unwinds the graphite layer toward the graphite guide assembly, the graphite correction assembly is arranged on one side of the graphite guide assembly, the graphite guide assembly is provided with a plurality of graphite guide rollers, the graphite correction assembly is used for correction transmission of graphite layer materials, the graphite buffer assembly is used for transmission, cache feeding of graphite sheets, and guiding the graphite sheets toward the powder flattening roller group.

7. The printing process of the structural member with insulation and heat dissipation according to claim 1, characterized in that: The powder flattening roller group is provided with two groups of flattening circular rollers with tangent outer diameters, and the two groups of flattening circular rollers cooperate to roll the powder layer and the graphite layer; The transfer module is used to transfer the protective film onto the transfer conveyor belt, and after semi-curing through transmission, the protective film is transferred onto the graphite layer through the cooperation of the transfer pressure roller and the transfer lifting assembly, and the edge of the powder layer is covered.

8. The printing process of the structural member with insulation and heat dissipation according to claim 1, characterized in that: The substrate hot pressing mechanism comprises a substrate feeding component, a hot melt film feeding component, a hot pressing composite component, a composite vibration component and a composite extrusion component. The substrate feeding component is used to feed the substrate to the hot pressing composite component. The hot melt film feeding component is used to feed the hot melt film to the hot pressing composite component. The hot melt film is located between the substrate layer and the graphite layer. The hot pressing composite component comprises a hot composite pressing roller and a hot air spray gun. The hot composite pressing roller is used to roll the substrate layer and the graphite layer, and connect them through the hot melt film formed after the hot melt film is hot-melted. The hot air spray gun is arranged on one side of the hot composite pressing roller and sprays hot air toward the hot melt film. The hot melt film is melted and softened by the hot air, and then enters the hot composite pressing roller for rolling, so that the substrate layer is connected with the graphite layer. The composite vibration component is arranged on a workbench. The heat composite pressure roller is arranged on the composite vibration and homogenization component, and the composite vibration and homogenization component includes a vibration plate, a vibration motor arranged on the vibration plate, and a shock-absorbing spring; the vibration plate is connected to the workbench through the shock-absorbing spring, and the height direction of the vibration plate is relatively parallel to the axial direction of the shock-absorbing spring; the heat composite pressure roller is arranged on the vibration plate, and the vibration motor is used for high-frequency vibration of the vibration plate to drive the heat composite pressure roller to vibrate the hot-melt film after heat melting evenly; The surface hot pressing mechanism includes a surface discharge component, a surface guide component, a connection coating component and a surface rolling component; the surface discharge component is used for discharging the surface layer, and the surface guide component is used for guiding the surface layer toward the surface rolling component; the connection coating component is used for coating an adhesive material on the upper surface of the graphite layer, and the surface rolling component is used for roller-connecting the surface layer with the graphite layer.

9. The printing process of the structural member with insulation and heat dissipation according to claim 1, characterized in that: The printing mechanism includes a printing turntable, a plurality of printing stations surrounding the outer circumference of the printing turntable, and a printing and drying component. The printing turntable is used to drive the transmission of multi-layer composite materials, the printing stations are used to print patterns on the materials, and the printing and drying component is used to dry the patterns. The die-cutting mechanism comprises a die-cutting fixed roller, a die-cutting circular knife and a finished product winding component. The die-cutting fixed roller is tangent to the outer diameter of the die-cutting circular knife, and the waste mechanism is used for winding up the cut waste.

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