Composite structural member, method for manufacturing the same, electronic device, and wire drawing device

Abstract

This application provides a composite material structural component and its preparation method, an electronic device, and a wire drawing device. The composite material structural component can be applied to electronic devices, such as the frame, back cover, and / or functional components of the electronic device. The paint layer can present the desired appearance color effect of the electronic device. By performing surface wire drawing treatment on the paint layer, the electronic device can have a texture similar to that of a metal material. This achieves a wire drawing effect when the outer shell of the electronic device is made of non-metallic parts such as plastic, thereby improving the competitiveness of the product with a low-cost wire drawing solution.

Description

Technical Field

[0001] This application relates to the field of electronic equipment technology, and in particular to a composite material structural component and its preparation method, electronic equipment, and wire drawing device. Background Technology

[0002] With the widespread use of electronic products such as smartphones, smartwatches, and laptops, consumers are increasingly demanding higher and higher standards for the visual appeal of these products.

[0003] To improve the visual appeal of electronic products, a brushed finish can be applied to their surfaces. However, in this technology, brushed finishes can only be applied to metal surfaces. When the structural components of an electronic product are made of non-metallic materials, it is difficult to achieve a brushed finish. Summary of the Invention

[0004] This application provides a composite material structural component and its preparation method, an electronic device, and a wire drawing device, which can achieve a wire drawing effect when the outer shell of the electronic device is made of non-metallic parts such as plastic, thereby improving the competitiveness of the product with a low-cost wire drawing solution.

[0005] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0006] In a first aspect, embodiments of this application provide a composite material structural component, comprising: a substrate and a layer of colored paint and a layer of topcoat stacked together, wherein the substrate is a non-metallic component, the topcoat layer is located on the side of the colored paint layer away from the substrate, and the surface of the topcoat layer away from the colored paint layer has a brushed texture.

[0007] The composite material structural components provided in this application can be applied to electronic devices, such as the frame, back cover, and / or functional components. The paint layer can achieve the desired color effect for the electronic device, and a surface brushing treatment on the topcoat layer can give the electronic device a texture similar to metal, thus achieving a brushed appearance on non-metallic parts such as plastics. Furthermore, the brushed texture only exists on the surface of the topcoat layer away from the paint layer, without damaging the color effect of the paint layer, thereby ensuring the appearance of the electronic device. In addition, it solves the problem in related technologies that surface brushing treatment can only be performed on metallic surfaces, allowing the frame, back cover, and / or functional components of electronic devices to be made of non-metallic materials such as plastics, thereby improving product competitiveness with a low-cost solution.

[0008] In one possible implementation, the substrate is a plastic part. Using a plastic part as the substrate can save on the manufacturing cost of the composite material structure.

[0009] In one possible implementation, the thickness of the paint layer is greater than or equal to 40 micrometers and less than or equal to 60 micrometers; and / or the thickness of the topcoat layer is greater than or equal to 20 micrometers and less than or equal to 40 micrometers.

[0010] This avoids both excessively thick paint layers, which can affect the feel of the composite material structural components, and excessively thin paint layers, which can prevent the composite material structural components from displaying the expected color. Furthermore, it also avoids excessively thick topcoat layers, which can affect the feel of the composite material structural components, and excessively thin topcoat layers, which can fail to protect the paint layer.

[0011] In one possible implementation, the brushing depth of the textured surface is less than or equal to half the thickness of the topcoat layer. This avoids excessive brushing depth, which could damage the paint layer and affect the appearance and color of the composite material structural component.

[0012] In one possible implementation, the brushing depth of the textured surface is greater than or equal to 5 micrometers and less than or equal to 15 micrometers. This avoids excessive brushing depth, which could damage the paint layer and affect the appearance and color of the composite material structure.

[0013] In one possible implementation, the composite material structural component further includes an anti-fingerprint layer disposed on the surface of the topcoat layer opposite to the color coat layer. This achieves the anti-fingerprint effect of the composite material structure.

[0014] Secondly, embodiments of this application provide an electronic device, including: a composite material structural component, wherein the composite material structural component is as described above.

[0015] The electronic device provided in this application embodiment, because it includes the above-mentioned composite material structural component, has the same technical effect as the composite material structural component.

[0016] In one possible implementation, the electronic device includes a housing comprising a connected back cover and a frame, at least one of the back cover and the frame including a composite material structural component. This allows for a brushed finish on the non-metallic housing of the electronic device.

[0017] In one possible implementation, the electronic device includes a housing and a functional component. The housing has mounting holes, and the functional component is mounted in the mounting holes. The functional component includes a composite material structural member, with the outer surface of the composite material structural member exposed in the mounting holes. This allows for a brushed finish on the non-metallic portions of the functional component.

[0018] In one possible implementation, the functional device includes at least one of a side button and a card holder.

[0019] Thirdly, embodiments of this application provide a method for preparing a composite material structural component, comprising: providing a blank, the blank comprising a substrate, a layer of colored paint and a layer of topcoat stacked together, the substrate being a non-metallic component; the topcoat layer being located on the side of the colored paint layer away from the substrate, the surface of the topcoat layer facing away from the colored paint layer comprising a region to be drawn, and performing a drawing process on the region to be drawn to form a drawing texture in the region to be drawn.

[0020] The method for preparing composite material structural components provided in this application allows for their application in electronic devices, such as in the frame, back cover, and / or functional components. A colored paint layer can achieve the desired color effect for the electronic device, and a surface brushing treatment on the topcoat layer can give the electronic device a metallic texture, thus achieving a brushed appearance on non-metallic parts such as plastics. Furthermore, the brushed texture exists only on the surface of the topcoat layer away from the colored paint layer, without compromising the color effect of the colored paint layer, thereby ensuring the aesthetic appearance of the electronic device. Additionally, this method solves the problem in related technologies where surface brushing can only be performed on metallic surfaces, allowing the frame, back cover, and / or functional components of electronic devices to be made of non-metallic materials such as plastics, thereby enhancing product competitiveness with a low-cost solution.

[0021] In one possible implementation, the process of drawing the area to be drawn to form a drawing pattern includes: placing a drawing wheel against the area to be drawn, detecting the pressure between the drawing wheel and the area to be drawn, and drawing the area to be drawn by the drawing wheel when the pressure between the drawing wheel and the area to be drawn reaches a preset pressure value.

[0022] In one possible implementation, when the pressure between the drawing wheel and the area to be drawn is less than a preset pressure value, the blank is controlled to move towards the drawing wheel relative to the drawing wheel; when the pressure between the drawing wheel and the area to be drawn is greater than the preset pressure value, the blank is controlled to move away from the drawing wheel relative to the drawing wheel.

[0023] This ensures the stability and consistency of the brushed finish when applying a brushed texture to the frame. It prevents the brushed texture from becoming too deep, which could damage the topcoat or even the color coat, thus preserving the color appearance of the color coat. It also prevents the brushed texture from becoming too shallow, resulting in a weak brushed finish.

[0024] In one possible implementation, the preset pressure value is greater than or equal to 4N and less than or equal to 10N.

[0025] This ensures the stability and consistency of the brushed finish when applying a brushed texture to the frame. It prevents the brushed texture from becoming too deep, which could damage the topcoat or even the color coat, thus preserving the color appearance of the color coat. It also prevents the brushed texture from becoming too shallow, resulting in a weak brushed finish.

[0026] Fourthly, embodiments of this application provide a wire drawing device, comprising: a clamp for fixing a blank, the blank comprising a substrate, a layer of colored paint and a layer of topcoat stacked together, the substrate being a non-metallic part; the topcoat layer being located on the side of the colored paint layer away from the substrate, the surface of the topcoat layer facing away from the colored paint layer comprising a wire drawing area; a wire drawing wheel for performing wire drawing processing on the wire drawing area; and a pressure sensor for detecting the pressure between the wire drawing area and the wire drawing wheel.

[0027] The wire drawing device provided in this application provides composite material structural parts that can be used in electronic devices, such as frames, back covers, and / or functional components. The paint layer can achieve the desired color effect for the electronic device, and the surface wire drawing process on the paint layer gives the electronic device a metallic texture, thus achieving a wire drawing effect on non-metallic parts such as plastics. Furthermore, the wire drawing pattern only exists on the surface of the paint layer away from the paint layer, without damaging the color effect of the paint layer, thereby ensuring the appearance of the electronic device. In addition, it solves the problem in related technologies that surface wire drawing can only be performed on metallic surfaces, allowing the frames, back covers, and / or functional components of electronic devices to be made of non-metallic materials such as plastics, improving product competitiveness with a low-cost solution. At the same time, the wire drawing device has good compatibility with the dimensions of the frame, back cover, and functional components, resulting in low production difficulty and high yield.

[0028] In one possible implementation, the wire drawing device further includes a drive unit connected to a clamp for driving the clamp to move toward or away from the wire drawing wheel, thereby adjusting the pressure between the area to be drawn and the wire drawing wheel. This enables the automation of the wire drawing device.

[0029] In one possible implementation, the fixture includes a first clamping member and a second clamping member that are opposite to and spaced apart, forming a clamping space between the first clamping member and the second clamping member for clamping the blank. This is to accommodate a surface brushing treatment of the outer surface of the frame's border.

[0030] In one possible implementation, the wire drawing device further includes: an elastic element, a clamping groove provided on the clamp, the clamping groove including a groove opening, a groove bottom wall and a groove side wall, the groove opening being opposite to the groove bottom wall, the groove side wall being connected between the groove opening and the groove bottom wall, and the elastic element being fixed to the groove side wall.

[0031] When the functional component is assembled in the clamping groove, the elastic element and the functional component are interference-fitted to position and fix the functional component, so that the functional component does not shift during the wire drawing process, thus ensuring the consistency of the wire drawing effect on the appearance surface of the functional component. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0033] Figure 2 This is an exploded view of an electronic device provided in an embodiment of this application;

[0034] Figure 3 This is a schematic diagram of a composite material structural component provided in an embodiment of this application;

[0035] Figure 4 A flowchart illustrating the method for preparing a composite material structural component according to an embodiment of this application. Figure 1 ;

[0036] Figure 5 A flowchart illustrating the method for preparing a composite material structural component according to an embodiment of this application. Figure 2 ;

[0037] Figure 6 A flowchart illustrating the method for preparing a composite material structural component according to an embodiment of this application. Figure 3 ;

[0038] Figure 7 A schematic diagram of the structure of a wire drawing device provided in an embodiment of this application. Figure 1 ;

[0039] Figure 8 A schematic diagram of the structure of a clamp provided in an embodiment of this application. Figure 1 ;

[0040] Figure 9 A schematic diagram of the structure of a wire drawing device provided in an embodiment of this application. Figure 2 ;

[0041] Figure 10 A schematic diagram of the structure of a clamp provided in an embodiment of this application. Figure 2 ;

[0042] Figure 11 for Figure 10 Schematic diagram of the structure of the clamp fixing the blank;

[0043] Figure 12 This is a schematic diagram illustrating the preparation process of the middle frame, card holder, and side key provided in an embodiment of this application.

[0044] Explanation of reference numerals in the attached figures:

[0045] 100 - Electronic devices;

[0046] 110 - Display component; 120 - Housing; 120a - Accommodation space; 121 - Middle frame; 122 - Back cover; 123 - Mounting hole; 130 - Functional components;

[0047] 200 - Composite material structural components;

[0048] 210 - Substrate; 220 - Color paint layer; 230 - Topcoat layer; 231 - Brushed texture; 240 - Anti-fingerprint layer;

[0049] 300-Wire drawing device;

[0050] 310-Clamp; 311-First clamping component; 312-Second clamping component; 313-Clamping space; 314-Clamping groove; 3141-Groove opening; 3142-Groove bottom wall; 3143-Groove side wall; 315-Elastic component; 320-Wire drawing wheel; 330-Pressure sensor; 340-Driver; 350-Support component; 360-Base;

[0051] 400 - blank. Detailed Implementation

[0052] The terminology used in the implementation section of this application is only for explaining specific embodiments of this application and is not intended to limit this application. The implementation of the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0053] This application provides a composite material structural component and an electronic device. This composite material structural component can be applied to any electronic device, such as: mobile phones, tablets, desktop computers, laptop computers, handheld computers, laptops, ultra-mobile personal computers (UMPCs), netbooks, cellular phones, personal digital assistants (PDAs), augmented reality (AR) devices, virtual reality (VR) devices, artificial intelligence (AI) devices, wearable devices, in-vehicle devices, smart home devices, and / or smart city devices. The electronic device provided in this application can be any of the above-mentioned electronic devices, and this application does not impose any special limitations on the specific type of electronic device. For ease of description, this application uses a mobile phone as an example for illustration.

[0054] To facilitate understanding, a brief explanation will first be given of the color, material and finishes (CMF) process, non-conductive vacuum metallization (NCVM) technology, and computerized numerical control (CNC) technology involved in the relevant technologies of this application.

[0055] CMF process

[0056] CMF (Complex Facing) technology refers to the process of optimizing the appearance, feel, and texture of a product through the selection and research of colors, materials, and surface treatments during product design and manufacturing, thereby enhancing the product's attractiveness and competitiveness.

[0057] NCVM technology

[0058] NCVM technology, also known as discontinuous coating technology or non-conductive electroplating technology, refers to the process of organically transforming metal materials under vacuum conditions using specific chemical and physical methods, converting the metal into particles, and depositing or adsorbing them onto the surface of plastic materials to form a film, which is what we call coating.

[0059] NCVM technology is applicable to all plastic products that require surface treatment, especially 3C products (computers, communications, and consumer electronics) with signal transmission and reception, particularly in the area near the antenna cover, such as mobile phones, GPS satellite navigation devices, and Bluetooth headsets.

[0060] Plastic products made using NCVM technology not only have a metallic feel but also do not affect the transmission performance of wireless communication. On the one hand, because NCVM technology uses metallic materials, it gives the product a metallic appearance; on the other hand, because NCVM technology is non-conductive, it allows for the normal use of wireless communication products. For example, when a mobile phone or Bluetooth headset receives or transmits signals, the generated electromagnetic field is not accumulated by the conductive coating, thus not affecting the phone's radio frequency performance or electrostatic discharge performance.

[0061] CNC technology

[0062] CNC technology refers to the technology of using computers to achieve digital program control. This technology uses computers to execute the motion trajectory of equipment and the timing logic control functions of peripheral devices according to pre-stored control programs. CNC machining usually refers to computer-controlled precision machining.

[0063] Figure 1This is a schematic diagram of the structure of an electronic device 100 provided in an embodiment of this application, with reference to... Figure 1 As shown, the electronic device 100 provided in this application embodiment includes: a display component 110 and a housing 120.

[0064] Specifically, the display component 110 is mounted on the housing 120, and the display area of ​​the display component 110 is exposed to present image information to the user. The display component 110 may include a display module capable of displaying images and videos. The display module may be a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (AMOLED), a flexible light-emitting diode (FLED), a quantum dot light-emitting diode (QLED), etc. Furthermore, in some embodiments of this application, the display component 110 may also include a light-transmitting cover plate, which is disposed on the outside of the display module to protect it. The light-transmitting cover plate may be made of light-transmitting materials such as transparent glass or polyimide that provide protection. In some embodiments of this application, the display component 110 can not only display images and videos but also have touch functionality.

[0065] Figure 2 This is an exploded view of an electronic device provided in an embodiment of this application, with reference to... Figure 2 As shown, the housing 120 may include a middle frame 121 and a back cover 122. The display assembly 110 and the back cover 122 are respectively disposed on opposite sides of the middle frame 121. The middle frame 121 has a receiving space 121a, which may be located on the side of the middle frame 121 facing the display assembly 110 or on the side of the middle frame 121 facing the back cover 122. Of course, the receiving space 121a may be present on both the side of the middle frame 121 facing the display assembly 110 and the side of the middle frame 121 facing the back cover 122.

[0066] The receiving cavity can house the necessary components of the electronic device 100. For example, in some embodiments of this application, the electronic device 100 may further include multiple components (not shown in the figures), which can be installed in the receiving space 121a. These multiple components may include, for example, a motherboard, processor, internal memory, external memory interface, universal serial bus (USB) interface, charging management module, power management module, battery, antenna, communication module, camera, audio module, speaker, receiver, microphone, headphone jack, sensor module, motor, indicator, and subscriber identification module (SIM) card interface, etc. The electronic device 100 may have more or fewer components than described above, may combine two or more components, or may have different component configurations. Each component can be implemented in hardware, software, or a combination of hardware and software, including one or more signal processing and / or application-specific integrated circuits.

[0067] The middle frame 121 may include a border and a middle plate. The border includes a left border, a top border, a right border, and a bottom border, which are sequentially connected to form a ring-shaped border. The middle plate is placed within and connected to the ring-shaped border, and is used to mount the electronic components necessary for the electronic device 100. The middle frame 121 has an outer wall and an inner wall that are opposite to each other. The outer wall of the middle frame 121 refers to the surfaces of the left border, top border, right border, and bottom border that face away from the receiving space 121a. When viewed from the outside of the electronic device 100, the outer wall of the middle frame 121 is visible. The inner wall of the middle frame 121 refers to the surfaces of the left border, top border, right border, and bottom border that face the receiving space 121a. When viewed from the outside of the electronic device 100, the inner wall of the middle frame 121 is invisible.

[0068] Please continue to refer to this. Figure 1 and Figure 2 As shown, a mounting hole 123 is provided on the housing 120, and a functional device 130 is assembled in the mounting hole 123. Exemplarily, the functional device 130 may include at least one of a card tray and a side button. Exemplarily, the card tray may be mounted on the bottom edge. The side button may be mounted on the right side edge. The number of side buttons may be one or more. For example, in... Figure 1 In the illustrated embodiment, there can be two side buttons, which can be a volume button and a screen lock button, respectively. It is understood that in some embodiments of this application, mounting holes 123 can also be formed on the back cover 122, and functional components 130 required by the electronic device 100 can be mounted in the mounting holes 123.

[0069] To achieve cost savings in manufacturing, in the electronic device 100 provided in this application, at least a portion of the housing 120 and at least a portion of the functional components 130 are made of non-metallic materials. For example, in some embodiments of this application, at least a portion of the housing 120 and at least a portion of the functional components 130 are made of plastic. Here, "at least a portion of the housing 120 and at least a portion of the functional components 130 are made of non-metallic materials" means that a portion or all of the housing 120 is made of non-metallic materials, and a portion or all of the functional components 130 are made of non-metallic materials.

[0070] Both the housing 120 and the functional device 130 have visible surfaces, which are the sides visible when viewed from the outside of the electronic device 100. To achieve a specific color effect on the electronic device 100, NCVM (Non-Metallic Vapor Mask) technology is generally used to treat the visible surfaces of the non-metallic housing 120 and the functional device 130. However, the surface treated with NCVM is quite fragile because the metal is adsorbed onto the surface of the non-metallic housing 120 in an atomic mist state, completely exposed to air. Due to the "metallic mobility" of this metal film layer, contact such as bumps or knocks will affect the surface of the electronic device 100. Therefore, it is impossible to perform surface brushing on the NCVM-treated surface to achieve a brushed texture effect. To achieve a brushed texture effect on the surface of the electronic device 100, related technologies only allow surface brushing on surfaces made of metallic materials.

[0071] Surface brushing is a surface treatment method that uses grinding to create lines on the surface of a workpiece to achieve a decorative effect. Because surface brushing can reflect a texture similar to that of metallic materials, it has been increasingly widely used.

[0072] To address the limitations of existing technologies where, after achieving specific color effects using NCVM (Non-Metallic Vapor Manufacturing) on ​​non-metallic parts, surface brushing cannot be performed to achieve a brushed texture effect, and where surface brushing can only be applied to metallic parts, this application provides a composite material structural component that allows for surface brushing on non-metallic parts (e.g., plastic parts) to achieve a brushed texture effect.

[0073] Figure 3 This is a schematic diagram of the structure of a composite material structural member 200 provided in an embodiment of this application, with reference to... Figure 3 As shown, the composite material structural component 200 provided in this application embodiment includes: a substrate 210 and a layer of colored paint 220 and a topcoat layer 230 stacked together, wherein the substrate 210 is a non-metallic component, and in some embodiments of this application, the substrate 210 is a plastic component.

[0074] Specifically, the paint layer 220 is applied to the surface of the substrate 210. The paint layer 220 is obtained by spraying paint onto the surface of the substrate 210. The color of the paint layer 220 can be set according to specific needs; for example, the paint layer 220 can be gold, silver, red, blue, etc., so that the composite material structural component 200 presents gold, silver, red, blue, etc.

[0075] The topcoat layer 230 is located on the side of the color paint layer 220 facing away from the substrate 210. The topcoat layer 230 can be obtained by spraying the topcoat onto the side of the color paint layer 220 facing away from the substrate 210. The purpose of applying the topcoat layer 230 to the side of the color paint layer 220 facing away from the substrate 210 is that the main function of the color paint layer 220 is to present the appearance color, and its ability to perform in use is relatively weak. For example, it is not good at resisting various frictions and scratches during user use. It is easy for friction to wear off the color paint, or for the color paint to be scratched, etc. These will lead to poor performance of the color paint layer 220. The topcoat layer 230 can improve the performance of the color paint layer 220 and protect the color paint layer 220.

[0076] The topcoat layer 230 is generally a transparent layer, allowing the color of the paint layer 220 to be observed through it. Of course, in some embodiments of this application, the transparency of the topcoat layer 230 can be set according to specific requirements.

[0077] The surface of the topcoat layer 230 that faces away from the color paint layer 220 can be brushed to obtain a brushed texture 231, thereby giving the composite material structural component 200 a texture similar to that of a metallic material. The brushed texture 231 exists only on the topcoat layer 230 and will not damage the appearance and color effect of the color paint layer 220, thus ensuring the overall appearance of the composite material structural component 200.

[0078] The composite material structural component 200 provided in this application embodiment can be applied to the electronic device 100 provided in this application embodiment. For example, at least one of the back cover 122 and the frame includes the composite material structural component 200. "At least one of the back cover 122 and the frame includes the composite material structural component 200" means that at least a portion of the back cover 122 can be composed of the composite material structural component 200, and / or at least a portion of the frame can be composed of the composite material structural component 200. This can be understood as a portion or all of the back cover 122 being composed of the composite material structural component 200, and / or a portion or all of the frame being composed of the composite material structural component 200. This results in the back cover 122 and / or the middle frame 121 having a brushed texture 231, presenting a metallic-like texture and enhancing the visual appearance of the electronic device 100.

[0079] In some embodiments of this application, the functional device 130 may also include the composite material structure 200, and the outer surface of the composite material structure 200 is exposed to the mounting hole 123, so that the outer surface of the functional device 130 can also present a texture similar to that of a metallic material, thereby improving the visual appearance of the electronic device 100.

[0080] It should be noted that, in the embodiments of this application, the back cover 122, the middle frame 121 and the functional device 130 may all include the composite material structural component 200, or at least one of them may include the composite material structural component 200.

[0081] It is understood that the composite material structural component 200 provided in this application embodiment can be applied to the electronic device 100, for example, to the frame, back cover 122, and / or functional device 130 of the electronic device 100. The paint layer 220 can achieve the desired appearance color effect of the electronic device 100, and the surface brushing treatment on the topcoat layer 230 can give the electronic device 100 a texture similar to metal materials, thereby achieving a brushed appearance effect on non-metallic parts such as plastics. Furthermore, the brushed texture 231 only exists on the surface of the topcoat layer 230 away from the paint layer 220, and will not damage the appearance color effect of the paint layer 220, thus ensuring the appearance effect of the electronic device 100. In addition, it can solve the problem in related technologies that surface brushing treatment can only be performed on the appearance surface of metal materials, allowing the frame, back cover 122, and / or functional device 130 of the electronic device 100 to be made of non-metallic materials such as plastics, thereby improving product competitiveness with a low-cost solution.

[0082] Please continue to refer to this. Figure 3 As shown, in some embodiments of this application, the thickness t1 of the paint layer 220 can be greater than or equal to 40 micrometers and less than or equal to 60 micrometers. For example, the thickness t1 of the paint layer 220 can be 40 micrometers, 45 micrometers, 50 micrometers, 55 micrometers, 60 micrometers, etc. This avoids the paint layer 220 being too thick, which would affect the feel of the composite material structural component 200, and also avoids the paint layer 220 being too thin, which would prevent the composite material structural component 200 from displaying the expected color.

[0083] In some embodiments, the thickness t2 of the topcoat layer 230 can be greater than or equal to 20 micrometers and less than or equal to 40 micrometers. For example, the thickness t2 of the topcoat layer 230 can be 20 micrometers, 25 micrometers, 30 micrometers, 35 micrometers, 40 micrometers, etc. This avoids the topcoat layer 230 being too thick, affecting the feel of the composite material structural component 200, and also avoids the topcoat layer 230 being too thin, thus failing to protect the paint layer 220. In some embodiments of this application, the brushing depth t3 of the brushed texture 231 on the topcoat layer 230 is less than or equal to half the thickness t2 of the topcoat layer 230. The brushing depth of the brushed texture 231 refers to the depth to which the groove-like brushed texture 231 is embedded in the topcoat layer 230, that is... Figure 3 The thickness t3 shown is used to prevent the brushed texture 231 from being too deep, which could damage the paint layer 220 and affect the appearance and color of the composite material structural component 200.

[0084] In some embodiments of this application, the brushing depth t3 of the brushed texture on the topcoat layer 230 is greater than or equal to 5 micrometers and less than or equal to 15 micrometers. For example, the brushing depth t3 of the brushed texture can be 5 micrometers, 8 micrometers, 10 micrometers, 15 micrometers, etc. In this way, the brushing depth of the brushed texture 231 can be avoided from being too large, which would damage the paint layer 220 and affect the appearance and color effect of the composite material structural component 200.

[0085] Please continue to refer to this. Figure 3 As shown, in some embodiments of this application, the composite material structural member 200 may further include an anti-fingerprint layer 240, which is disposed on the surface of the topcoat layer 230 opposite to the color paint layer 220. For example, the anti-fingerprint layer 240 may be formed by a polishing agent coated on the side of the topcoat layer 230 opposite to the color paint layer 220. Exemplarily, after surface brushing treatment on the topcoat layer 230, a polishing agent (such as Pledge) may be coated on the topcoat layer 230 to wipe away tiny dirt particles remaining during the surface brushing treatment, while simultaneously forming the anti-fingerprint layer 240.

[0086] Based on this, this application also provides a method for preparing a composite material structural component 200. Figure 4 A schematic flowchart illustrating the preparation method of the composite material structural member 200 provided in an embodiment of this application. Figure 1 ,refer to Figure 4 As shown, the preparation method involves the following steps:

[0087] S100. A blank is provided, the blank including a substrate 210, a color paint layer 220 and a topcoat layer 230 stacked thereon, the substrate 210 being a non-metallic part; the topcoat layer 230 is located on the side of the color paint layer 220 facing away from the substrate 210, and the surface of the topcoat layer 230 facing away from the color paint layer 220 includes a wire drawing area.

[0088] S200, Perform wire drawing treatment on the area to be drawn to form wire drawing texture 231.

[0089] Figure 5 A schematic flowchart illustrating the preparation method of the composite material structural member 200 provided in an embodiment of this application. Figure 2 ,refer to Figure 5 As shown, in Figure 4 Based on the provided method for preparing the composite material structural component 200, S200 may include:

[0090] S210. Place the wire drawing wheel against the area to be drawn; detect the pressure between the wire drawing wheel and the area to be drawn; when the pressure between the wire drawing wheel and the area to be drawn reaches the preset pressure value, perform wire drawing on the area to be drawn using the wire drawing wheel.

[0091] This avoids the brushed texture 231 being too deep, which could damage the topcoat layer 230 or even the color paint layer 220, thus ensuring the appearance and color effect of the color paint layer 220. It also avoids the problem of the brushed texture 231 being too shallow, resulting in a weak brushed texture.

[0092] Figure 6 A schematic flowchart illustrating the preparation method of the composite material structural member 200 provided in an embodiment of this application. Figure 3 ,refer to Figure 6 As shown, in Figure 5 Based on the method for preparing the provided composite material structural component 200, S200 may further include:

[0093] S211. Place the wire drawing wheel against the area to be drawn; detect the pressure between the wire drawing wheel and the area to be drawn; when the pressure between the wire drawing wheel and the area to be drawn reaches the preset pressure value, perform wire drawing on the area to be drawn using the wire drawing wheel; when the pressure between the wire drawing wheel and the area to be drawn is less than the preset pressure value, control the workpiece to move towards the wire drawing wheel; when the pressure between the wire drawing wheel and the area to be drawn is greater than the preset pressure value, control the workpiece to move away from the wire drawing wheel.

[0094] Step S211 ensures the uniformity of the brushed texture 231 depth, preventing the brushed texture 231 from being too deep and damaging the topcoat layer 230 or even the color paint layer 220, thus guaranteeing the appearance and color effect of the color paint layer 220. It also prevents the brushed texture 231 from being too shallow, resulting in a weak brushed texture.

[0095] In some embodiments of this application, the preset pressure value between the drawing wheel and the workpiece can be set to be greater than or equal to 4N and less than or equal to 10N. That is, when the pressure between the drawing wheel and the area to be drawn is between 4N and 10N, the drawing wheel performs drawing processing on the area to be drawn. When the pressure between the drawing wheel and the area to be drawn is less than 4N, the workpiece is controlled to move relative to the drawing wheel towards the drawing wheel. When the pressure between the drawing wheel and the area to be drawn is greater than 10N, the workpiece is controlled to move relative to the drawing wheel away from the drawing wheel.

[0096] Based on the method for preparing the composite material structural component 200 provided in the embodiments of this application, the embodiments of this application also provide a wire drawing device. Figure 7 Schematic diagram of the structure of the wire drawing device 300 provided in an embodiment of this application Figure 1 ,refer to Figure 7 As shown, the wire drawing device 300 provided in this application embodiment includes a clamp 310, a wire drawing wheel 320, and a pressure sensor 330.

[0097] Specifically, the fixture 310 is used to fix the blank 400, which is the composite material structural component 200 shown above. That is, the blank 400 includes a non-metallic substrate 210, a layered paint layer 220, and a topcoat layer 230. The topcoat layer 230 is located on the side of the paint layer 220 facing away from the substrate 210, and the surface of the topcoat layer 230 facing away from the paint layer 220 includes the area to be drawn. The blank 400 can be a middle frame blank, a back cover blank, a card holder blank, a side key blank, etc.

[0098] The wire drawing wheel 320 is used to perform wire drawing on the area to be drawn.

[0099] Pressure sensor 330 is used to detect the pressure between the area to be drawn and the drawing wheel 320.

[0100] Continue to refer to Figure 7 As shown, in some embodiments of this application, the wire drawing device 300 may further include a drive member 340, which is connected to the clamp 310 and is used to drive the clamp 310 to move toward or away from the wire drawing wheel 320 to adjust the pressure between the area to be drawn and the wire drawing wheel 320.

[0101] For example, refer to Figure 7As shown, in some embodiments of this application, the wire drawing device 300 includes a base 360, a pressure sensor 330, and a drive unit 340, which can be disposed on the base 360. The pressure sensor 330 and the drive unit 340 can be connected to an external force control system, and the drive unit 340 can be a servo motor. The wire drawing device may also include a support member 350, one end of which extends into the base 360, and the pressure sensor 330 is disposed radially around this end. The drive unit 340 is connected to this end of the support member 350. The other end of the support member 350 is used to connect to a clamp 310, in which a blank 400 can be fixed. A wire drawing wheel 320 is disposed corresponding to the blank 400 fixed in the clamp 310 to perform wire drawing processing on the area of ​​the blank 400 to be drawn. The wire drawing wheel 320 can be connected to an external force control system.

[0102] The force control system controls the drawing wheel 320 to draw the blank 400 along a specific path. Since the drawing wheel 320 exerts a compressive force on the blank 400, the clamp 310 drives the support 350 to exert pressure on the pressure sensor 330, and the pressure sensor 330 transmits the collected pressure information to the force control system.

[0103] When the pressure value collected by the pressure sensor 330 is within the preset pressure value, the drawing wheel 320 performs normal wire drawing on the workpiece 400. For example, when the pressure value collected by the pressure sensor 330 is between 4N and 10N, the drawing wheel 320 performs normal wire drawing on the workpiece 400. When the pressure value collected by the pressure sensor 330 is less than the preset pressure value, the drive unit 340 drives the clamp 310 to move closer to the drawing wheel 320.

[0104] For example, when the pressure value collected by the pressure sensor 330 is less than 4N, the force control system calculates a displacement compensation value for the drive component 340. The drive component 340 then drives the clamp 310 to move closer to the drawing wheel 320 based on the displacement compensation value, so that the pressure value collected by the pressure sensor 330 returns to the range of 4N to 10N. When the pressure value collected by the pressure sensor 330 is greater than a preset pressure value, the drive component 340 drives the clamp 310 to move away from the drawing wheel 320. For example, when the pressure value collected by the pressure sensor 330 is greater than 10N, the force control system calculates a displacement compensation value for the drive component 340. The drive component 340 then drives the clamp 310 to move away from the drawing wheel 320 based on the displacement compensation value, so that the pressure value collected by the pressure sensor 330 returns to the range of 4N to 10N.

[0105] After the blank 400 is wire-drawn, the wire-drawn surface of the blank 400 is wiped and coated with Pledge to remove the tiny dirt particles remaining during the wire-drawing process, and at the same time form an anti-fingerprint layer 240.

[0106] Figure 8 A schematic diagram of the structure of the clamp 310 provided in an embodiment of this application. Figure 1 , Figure 9 Schematic diagram of the structure of the wire drawing device 300 provided in an embodiment of this application Figure 2 ,refer to Figure 8 and Figure 9 As shown, in some embodiments of this application, the clamp 310 includes a first clamping member 311 and a second clamping member 312 that are opposite to and spaced apart. A clamping space 313 for clamping the blank 400 is formed between the first clamping member 311 and the second clamping member 312. Exemplarily, the clamping space 313 can be used to clamp the middle frame 121. Each middle frame 121 is individually wire-drawn. The middle frame 121 is fixed between the first clamping member 311 and the second clamping member 312. The direction of the first clamping member 311 and the second clamping member 312 is parallel to the thickness direction of the middle frame 121. The first clamping member 311 and the second clamping member 312 are recessed by a certain distance relative to the outer surface of the middle frame 121 to protect the weak paint layer at the rounded corner of the edge of the middle frame 121 and prevent the paint layer at the weak paint layer from being torn.

[0107] The force control system controls the drawing wheel 320 to rotate and cut the outer surface of the middle frame 121 along a specific motion path. Due to variations in the dimensions of the middle frame 121 and the positioning tolerances of the fixture 310, problems such as tearing of the topcoat layer 230 or weak brush texture 231 may occur when the drawing wheel 320 performs wire drawing along the specific path. This problem can be solved by using a pressure sensor 330 and / or a drive unit 340. For example, Figure 9 As shown, when the drawing wheel 320 draws the edge of the middle frame 121, the clamp 310 drives the support 350 to exert pressure on the pressure sensor 330. The pressure sensor 330 transmits the collected pressure information to the force control system. When the pressure value collected by the pressure sensor 330 is within the preset pressure value, for example, between 4N and 10N, the drawing wheel 320 draws the middle frame 121 normally. When the pressure value collected by the pressure sensor 330 is less than the preset pressure value, for example, less than 4N, the force control system calculates a displacement compensation value for the drive unit 340. The drive unit 340 drives the clamp 310 to move closer to the drawing wheel 320 according to the displacement compensation value, so that the pressure value collected by the pressure sensor 330 returns to between 4N and 10N. When the pressure value collected by the pressure sensor 330 is greater than the preset pressure value, for example, greater than 10N, the force control system calculates the displacement compensation value and gives it to the drive component 340. The drive component 340 drives the clamp 310 to move away from the wire drawing wheel 320 according to the displacement compensation value, so that the pressure value collected by the pressure sensor 330 returns to the range of 4N to 10N.

[0108] This ensures the stability of the brushing process and the consistency of the brushed texture 231 when the edge of the middle frame 121 is brushed. It prevents the brushed texture 231 from being too deep, which could damage the topcoat layer 230 or even the color paint layer 220, thus guaranteeing the appearance and color effect of the color paint layer 220. It also prevents the brushed texture 231 from being too shallow, resulting in a weak brushed texture.

[0109] After brushing the edge of the mid-frame 121, a Pledge (polishing agent) is applied to the brushed surface of the edge to remove tiny dirt particles left over from the brushing process, while forming an anti-fingerprint layer 240.

[0110] Figure 10 A schematic diagram of the structure of the clamp 310 provided in an embodiment of this application. Figure 2 ,refer to Figure 10 As shown, in some embodiments of this application, the wire drawing device 300 further includes an elastic element 315. The clamp 310 has a clamping groove 314, which includes a groove opening 3141, a bottom wall 3142, and a side wall 3143. The groove opening 3141 is opposite to the bottom wall, and the side wall 3143 connects the groove opening 3141 and the bottom wall 3142. The elastic element 315 is fixed to the side wall 3143.

[0111] For example, Figure 11 for Figure 10 A schematic diagram of the structure of the clamp 310 fixing the blank 400, for reference. Figure 11 As shown, the clamping groove 314 can hold functional components 130, such as side keys, card holders, etc. Figure 11 The following description uses the functional device 130 as an example of a side key. The shape of the clamping groove 314 roughly conforms to the shape of the functional device 130, and an elastic element 315 is fixed on the side wall 3143 of the clamping groove 314. For example, Figure 11 An elastic element 315 is fixed at each end of the clamping groove 314 along its length. Two elastic elements 315 are fixed on each side of the clamping groove 314 along its width, with the two elastic elements 315 on each side fixed near the end of the functional device 130. For example, the elastic elements 315 can be made of soft rubber. When the functional device 130 is assembled in the clamping groove 314, the elastic elements 315 and the functional device 130 are interference-fitted to position and fix the functional device 130, preventing displacement of the functional device 130 during the wire drawing process and ensuring the consistency of the wire drawing effect on the surface of the functional device 130.

[0112] It is understood that, since the functional device 130 is generally small in size, there can be multiple fixtures 310 for fixing the functional device 130, forming a multi-station fixture 310 assembly to achieve batch wire drawing processing of the functional device 130. Exemplarily, in some embodiments of this application, the fixture 310 assembly includes 20 fixtures 310 for fixing the functional device 130, and a single wire drawing wheel 320 corresponds to 20 functional devices 130 for wire drawing processing, thus achieving batch processing of the functional device 130.

[0113] Please refer to Figure 7 As shown, the force control system controls the drawing wheel 320 to rotate and cut the outer surface of the functional component 130 along a specific motion path. When the drawing wheel 320 draws the functional component 130, the fixture 310 drives the support 350 to exert pressure on the pressure sensor 330, which transmits the collected pressure information to the force control system. When the pressure value collected by the pressure sensor 330 is within the preset pressure value, for example, between 4N and 10N, the drawing wheel 320 performs normal drawing on the functional component 130. When the pressure value collected by the pressure sensor 330 is less than the preset pressure value, for example, less than 4N, the force control system calculates a displacement compensation value for the drive component 340. The drive component 340 drives the fixture 310 to move closer to the drawing wheel 320 according to the displacement compensation value, so that the pressure value collected by the pressure sensor 330 returns to between 4N and 10N. When the pressure value collected by the pressure sensor 330 is greater than the preset pressure value, for example, greater than 10N, the force control system calculates the displacement compensation value and gives it to the drive component 340. The drive component 340 drives the clamp 310 to move away from the wire drawing wheel 320 according to the displacement compensation value, so that the pressure value collected by the pressure sensor 330 returns to the range of 4N to 10N.

[0114] This ensures the stability of the brushing process and the consistency of the brushed texture 231 when the functional component 130 is brushed. It prevents the brushed texture 231 from being too deep, which could damage the topcoat layer 230 or even the color paint layer 220, thus guaranteeing the appearance and color effect of the color paint layer 220. It also prevents the brushed texture 231 from being too shallow, resulting in a weak brushed finish.

[0115] After the functional device 130 is brushed, Pledge (a polishing agent) is applied to the brushed surface of the functional device 130 to remove the tiny dirt particles left during the brushing process, and at the same time form an anti-fingerprint layer 240.

[0116] It should be noted that, since the external dimensions of the functional device 130 vary relatively little, in some embodiments of this application, the pressure sensor 330 and the drive unit 340 may be omitted. The surface of the functional device 130 can be directly brushed using a wire drawing wheel 320. This reduces the processing cost of the functional device 130.

[0117] Figure 12 For a schematic diagram illustrating the fabrication process of the middle frame 121, the card holder, and the side keys provided in an embodiment of this application, please refer to... Figure 12 As shown, the fabrication process of the middle frame 121 includes, in sequence: injection molding, CNC shaping, sanding, spraying (spraying color paint layer 220 and topcoat layer 230), wire drawing, CNC finishing, and assembly. The fabrication process of the card tray includes, in sequence: injection molding, spraying (spraying color paint layer 220 and topcoat layer 230), wire drawing, and CNC shaping. The fabrication process of the side keys includes, in sequence: injection molding, spraying (spraying color paint layer 220 and topcoat layer 230), CNC blanking, and wire drawing.

[0118] The painting and brushing processes for the middle frame 121, the card holder, and the side keys are consistent. Exemplarily, in some embodiments of this application, a 50μm color paint layer 220 is sprayed onto the substrate 210 (middle frame 121, card holder, side keys, etc.), a 30μm topcoat layer 230 is sprayed onto the color paint layer 220, and the topcoat layer 230 is subjected to surface brushing treatment to form brushed texture 231, the brushing depth of the brushed texture 231 being 10μm.

[0119] For example, Table 1 shows the key process parameters for the wire drawing of the middle frame 121, card holder, and side key provided in an embodiment of this application, as shown in Table 1.

[0120] Table 1

[0121]

[0122] The hardness and thickness of the wire drawing wheel 320 can be set according to the specific working conditions. For example, when performing the process in Table 1, the wire drawing wheel 320 uses a hardness of 50HA-60HA (HA is Shore hardness) and a thickness of 50 mm.

[0123] When implementing the process corresponding to Table 1, the wire drawing wheel with a mesh size of 320 should be 120-640 mesh.

[0124] When brushing the middle frame 121, the brushing wheel 320's rotation speed is set to 200 rpm - 1400 rpm. The feed rate of the brushing wheel 320 is 200 mm / min - 1800 mm / min, where the feed rate of the brushing wheel 320 is its moving speed, and the same applies below. The pressure of the brushing wheel 320 on the topcoat layer 230 of the middle frame 121 is maintained between 2N and 20N. The Z-axis amplitude of the brushing wheel 320 is 4 mm - 20 mm, where the Z-axis amplitude can be referenced... Figure 7 The vertical direction (Z-axis direction) is the same below. The Z-axis feed of the wire drawing wheel 320 is 6000 mm / min-10000 mm / min, where the Z-axis feed of the wire drawing wheel 320 is the moving speed of the wire drawing wheel 320 in the Z direction. The wire drawing wheel 320 performs surface wire drawing treatment on one middle frame 121 at a time.

[0125] When brushing the card trays, the brushing wheel 320 rotates at a speed of 200 rpm to 1800 rpm. The feed rate of the brushing wheel 320 is 1600 mm / min to 3400 mm / min. When the brushing wheel 320 applies pressure to the topcoat layer 230 of the card tray, the deformation of the brushing wheel 320 pressing into the card tray is 0.5 mm to 5 mm. The Z-axis amplitude of the brushing wheel 320 is 4 mm to 20 mm. The Z-axis feed rate of the brushing wheel 320 is 1500 mm / min to 4500 mm / min. The brushing wheel 320 performs surface brushing treatment on 20 card trays at a time.

[0126] When brushing the card holders, the brushing wheel 320 rotates at a speed of 400 rpm to 2000 rpm. The feed rate of the brushing wheel 320 is 1600 mm / min to 3400 mm / min. When the brushing wheel 320 applies pressure to the topcoat layer 230 of the side key, the deformation of the brushing wheel 320 pressing into the card holder is 0.5 mm to 5 mm. The Z-axis amplitude of the brushing wheel 320 is 4 mm to 20 mm. The Z-axis feed rate of the brushing wheel 320 is 1500 mm / min to 4500 mm / min. The brushing wheel 320 performs surface brushing treatment on 20 card holders at a time.

[0127] Of course, it is understood that in other embodiments of this application, the data in Table 1 may vary depending on the specific operating conditions.

[0128] In summary, the composite material structural component 200 and its preparation method, the electronic device 100, and the wire drawing device 300 provided in this application embodiment, through optimized process routes and controlled process parameter matching, achieve a wire drawing process on the plastic shell 120 and / or functional components 130 of the electronic device 100 while ensuring the reliability and appearance of the electronic device 100, thus achieving a wire drawing effect on the appearance of the electronic device 100. Furthermore, compared to related technologies where wire drawing can only be performed on metal, this application can achieve a wire drawing effect on the plastic shell 120 and / or functional components 130, thereby improving product competitiveness with a low-cost solution. In addition, the wire drawing device 300 provided in this application embodiment has good compatibility with the external dimensions of the shell 120 (middle frame 121, back cover 122, functional components 130, etc.), resulting in low production difficulty and high yield.

[0129] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0130] In the description of the embodiments of this application, the term "at least one" means one or more, and "more than one" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of a single item or a plurality of items. For example, at least one of a, b, c can represent a, b, c, a and b, a and c, b and c, a and b and c, where a, b, and c can be a single item or a plurality of items.

[0131] In the description of embodiments of this application, "parallel," "perpendicular," "equal," and "coplanar" include the described situation and situations similar to the described situation, the range of which is within an acceptable deviation range, wherein the acceptable deviation range is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximately parallelism, wherein the acceptable deviation range for approximately parallelism may be, for example, within ±10° or ±5°. "Perpendicular" includes absolute perpendicularity and approximately perpendicularity, wherein the acceptable deviation range for approximately perpendicularity may be, for example, within ±10° or ±5°; "equal" includes absolute equality and approximately equality, wherein the acceptable deviation range for approximately equality may be, for example, the difference between the two equals being less than or equal to 5% of either one. For example, an angle of 180° between two components includes both absolute 180° and approximate 180°, where an acceptable deviation range for approximate 180° could be, for example, within ±10° or ±5°; similarly, an angle of 0° between two components includes both absolute 0° and approximate 0°, where an acceptable deviation range for approximate 0° could be, for example, within ±10° or ±5°. Similarly, an angle of 90° between two components includes both absolute 90° and approximate 90°, where an acceptable deviation range for approximate 90° could be, for example, within ±10° or ±5°.

[0132] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0133] The directional terms used in the embodiments of this application, such as "inner" and "outer," are merely for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or a specific orientation structure and operation. Therefore, they should not be construed as limitations on the embodiments of this application. Furthermore, unless otherwise stated in this application, "multiple" in this application refers to two or more.

[0134] In the embodiments of this application, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0135] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0136] The terms "first," "second," "third," "fourth," etc. (if present) in the claims, description, and drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0137] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0138] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them; although the embodiments of this application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A composite material structural component, characterized in that, include: Substrate, wherein the substrate is a non-metallic component; A layer of colored paint and a layer of topcoat are stacked together, wherein the topcoat layer is located on the side of the colored paint layer that is away from the substrate; The surface of the topcoat layer opposite to the color paint layer has a brushed texture.

2. The composite material structural component according to claim 1, characterized in that, The substrate is a plastic part.

3. The composite material structural component according to claim 1 or 2, characterized in that, The thickness of the paint layer is greater than or equal to 40 micrometers and less than or equal to 60 micrometers; and / or the thickness of the topcoat layer is greater than or equal to 20 micrometers and less than or equal to 40 micrometers.

4. The composite material structural component according to any one of claims 1-3, characterized in that, The brushing depth of the brushed texture is less than or equal to half the thickness of the topcoat layer.

5. The composite material structural component according to any one of claims 1-4, characterized in that, The brushed texture has a brushing depth greater than or equal to 5 micrometers and less than or equal to 15 micrometers.

6. The composite material structural component according to any one of claims 1-5, characterized in that, It also includes an anti-fingerprint layer, which is disposed on the surface of the topcoat layer opposite to the color paint layer.

7. An electronic device, characterized in that, include: A composite material structural component, wherein the composite material structural component is any one of claims 1-6.

8. The electronic device according to claim 7, characterized in that, The device includes a housing, which includes a connected back cover and a frame, at least one of which includes the composite material structural member.

9. The electronic device according to claim 7 or 8, characterized in that, include: A housing, wherein mounting holes are provided on the housing; A functional device is mounted in the mounting hole, the functional device includes the composite material structural component, and the outer surface of the composite material structural component is exposed in the mounting hole.

10. The electronic device according to claim 9, characterized in that, The functional device includes at least one of a side button and a card tray.

11. A method for preparing a composite material structural component according to any one of claims 1-10, characterized in that, include: A blank is provided, the blank comprising a substrate, a layer of colored paint and a layer of topcoat stacked together, the substrate being a non-metallic part; the topcoat is located on the side of the colored paint layer facing away from the substrate, and the surface of the topcoat layer facing away from the colored paint layer includes a region to be drawn. The area to be drawn is subjected to a drawing process to form a drawing pattern in the area.

12. The preparation method according to claim 11, characterized in that, Performing a wire-drawing process on the area to be drawn, to form a wire-drawing texture in the area to be drawn, includes: The wire drawing wheel is placed against the area to be drawn; Detect the pressure between the drawing wheel and the area to be drawn; When the pressure between the drawing wheel and the area to be drawn reaches a preset pressure value, the drawing wheel performs a drawing process on the area to be drawn.

13. The preparation method according to claim 12, characterized in that, When the pressure between the drawing wheel and the area to be drawn is less than the preset pressure value, the blank is controlled to move relative to the drawing wheel toward a direction closer to the drawing wheel; When the pressure between the drawing wheel and the area to be drawn is greater than the preset pressure value, the blank is controlled to move away from the drawing wheel relative to the drawing wheel.

14. The preparation method according to claim 12 or 13, characterized in that, The preset pressure value is greater than or equal to 4N and less than or equal to 10N.

15. A wire drawing device, characterized in that, include: A fixture is used to fix a blank, the blank comprising a substrate, a layer of colored paint and a layer of topcoat, the substrate being a non-metallic part; the topcoat is located on the side of the colored paint layer away from the substrate, and the surface of the topcoat layer facing away from the colored paint layer includes a region to be drawn. A wire drawing wheel, used for drawing the area to be drawn; A pressure sensor is used to detect the pressure between the area to be drawn and the drawing wheel.

16. The wire drawing device according to claim 15, characterized in that, include: A driving component, connected to the clamp, is used to drive the clamp to move toward or away from the drawing wheel, so as to adjust the pressure between the area to be drawn and the drawing wheel.

17. The wire drawing device according to claim 15 or 16, characterized in that, The clamp includes a first clamping member and a second clamping member that are opposite to and spaced apart, and a clamping space for clamping the blank is formed between the first clamping member and the second clamping member.

18. The wire drawing device according to claim 15 or 16, characterized in that, Also includes: Elastic components; The clamp is provided with a clamping groove, which includes a groove opening, a groove bottom wall, and a groove side wall. The groove opening is opposite to the groove bottom wall, and the groove side wall is connected between the groove opening and the groove bottom wall. The elastic element is fixed to the side wall of the groove.

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