Wireless charging panel and double-color injection molding process thereof

Abstract

The invention relates to a wireless charging panel and a double-color injection molding process thereof, and the double-color injection molding process comprises the following specific steps: S1, carrying out double-color injection molding on a double-color material to obtain a semi-finished product; and S2, performing decoration treatment on the material surface of the semi-finished product to obtain the wireless charging panel. The invention has the beneficial effects that the process is simple, the design is reasonable, the framework (hard rubber), the soft rubber, the heat dissipation holes, the lightning mark, the light-transmitting structure and the like are integrally formed, the processing is convenient, and the efficiency is high; meanwhile, the surface of the charging panel can realize diversification of colors and styles (suede, soft touch paint, light transmission and the like), the hardness is adjustable, the skin-friendly hand feeling is increased, and the charging panel is more attractive.

Description

Technical Field

[0001] This invention relates to the field of wireless charging technology, specifically to a wireless charging panel and its two-color injection molding process. Background Technology

[0002] With economic development and technological progress, portable mobile terminal devices such as mobile phones and laptops are favored by consumers due to their small size and portability. As portable devices become more widespread, their functions are constantly being improved. The more functions users use, the more power the portable devices consume, and users often encounter the problem of insufficient battery power during use.

[0003] Cars have become an increasingly common mode of transportation. When people travel long distances or go on business trips, a dead battery on their mobile devices, especially a smartphone, can significantly disrupt their work and daily lives. Therefore, people often charge their mobile devices while traveling. However, this often results in the driver's cabin being cluttered with power cords and charging cables, causing inconvenience and affecting driving safety. This has led to the development of wireless charging pads.

[0004] Currently, wireless charging panels in existing technologies are usually manufactured using processes such as hot pressing and cold pressing. This process is lengthy and complex, requires high equipment precision, is costly, and the quality of panel processing cannot be guaranteed. Summary of the Invention

[0005] This invention addresses the technical problems existing in the prior art by providing a wireless charging panel and its dual-color injection molding process.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A dual-color injection molding process for a wireless charging panel includes the following specific steps: S1: The two-color material is injection molded in two colors to obtain a semi-finished product; S2: Decorate the surface of the semi-finished product to obtain a wireless charging panel.

[0007] The beneficial effects of the present invention are as follows: During the processing, S1: the two-color material is injection molded in two colors to obtain a semi-finished product; S2: the surface of the material of the semi-finished product is decorated to obtain a wireless charging panel, thus completing the processing and molding of the wireless charging panel. The molding process is convenient and efficient.

[0008] The invention features a simple process and a reasonable design. The frame (hard plastic), soft plastic, heat dissipation holes, lightning bolt logo, and light-transmitting structure are all integrally molded, making processing convenient and efficient. At the same time, the surface of the charging panel can achieve a variety of colors and styles (suede-like, soft-touch paint, light-transmitting, etc.), and the hardness is adjustable, increasing the skin-friendly feel and making it more aesthetically pleasing.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, step S1 includes the following specific steps: S11: Preheat the two-color injection molding machine and perform hard plastic injection molding on rigid PC / ABS or transparent PC materials; S12: Perform soft injection molding on TPE material to complete two-color injection molding.

[0011] The beneficial effect of adopting the above-mentioned further solution is that, in the processing, firstly, the rigid plastic material PC / ABS or transparent PC material is subjected to rigid plastic injection molding; then, the soft plastic material TPE is subjected to soft plastic injection molding to complete the two-color injection molding, which is convenient for molding. In addition, the two-color injection molding machine is preheated before hard and soft rubber injection molding to ensure the effect of subsequent hard and soft rubber injection molding.

[0012] Furthermore, S11 includes the following specific steps: the hot runner temperature of the rigid PC / ABS is ≤250℃, the holding pressure is 60Mpa-90Mpa, and the rigid injection molding is completed.

[0013] The advantages of adopting the above-mentioned further solutions are that the process is simple, the parameters of rigid rubber injection molding are reasonably designed, and the quality of rigid rubber injection molding is guaranteed.

[0014] Furthermore, S12 includes the following specific steps: the temperature of the storage cylinder of the soft TPE is 130℃-220℃, and the holding pressure is 60Mpa-90Mpa.

[0015] The advantages of adopting the above-mentioned further solutions are that the process is simple, the parameters of soft rubber injection molding are reasonably designed, and the quality of hard rubber injection molding is guaranteed.

[0016] Furthermore, S1 is preceded by S0: drying the rigid plastic material PC / ABS at 80-100℃ for 3-5 hours, and drying the soft plastic material TPE at 80℃-100℃ for 1-2 hours.

[0017] The advantages of adopting the above-mentioned further solution are that the process is simple and the design is reasonable. The hard and soft rubbers are dried before injection molding to remove moisture and ensure the effect of subsequent two-color injection molding.

[0018] Furthermore, S2 includes the following specific steps: forming a textured pattern on the skin layer above the semi-finished product by laser etching.

[0019] The advantages of adopting the above-mentioned further solution are that the process is simple and the design is reasonable. The use of laser etching to form texture patterns on the upper surface of the semi-finished product makes it more beautiful and increases the overall sense of sophistication of the product.

[0020] Furthermore, S2 includes the following specific steps: spraying paint onto the skin layer above the semi-finished product to form a soft-touch paint layer with a thickness of ≥25um.

[0021] The advantages of adopting the above-mentioned further solution are that the process is simple and the design is reasonable. By spraying paint on the surface layer above the semi-finished product, a soft-touch paint layer with a thickness of ≥25um is formed to achieve a skin-friendly feel for the entire product and make it more comfortable to touch.

[0022] Furthermore, S2 includes the following specific steps: spraying UV paint onto the upper surface of the semi-finished product, and simultaneously performing PVD plating on the lower surface of the semi-finished product.

[0023] The advantages of adopting the above-mentioned further solution are that the process is simple and the design is reasonable. By spraying UV paint on the upper surface of the semi-finished product and performing PVD plating on the lower surface of the semi-finished product, a decorative and light-transmitting effect is achieved, making it more beautiful.

[0024] The present invention also relates to a wireless charging panel, which is manufactured by the dual-color injection molding process of the wireless charging panel described above, and includes a frame and a film. The film is distributed on the upper surface of the frame and forms at least one charging area. A charging module is installed on the frame corresponding to each of the charging areas.

[0025] The beneficial effect of adopting the above-mentioned further solution is that the present invention also provides a wireless charging panel. The charging panel has a simple structure and reasonable design. The frame (hard plastic), soft plastic, heat dissipation holes, lightning symbol, light-transmitting structure, etc. are all integrally molded, which is convenient and efficient to process. At the same time, the surface of the charging panel can achieve a variety of colors and styles (imitating suede, soft touch paint, light transmission, etc.), and the hardness is adjustable, which increases the skin-friendly feel and is more beautiful.

[0026] Furthermore, there are multiple charging areas, which are arranged side by side, and each charging area is provided with a charging mark and several heat dissipation holes.

[0027] The advantages of adopting the above-mentioned further solution are that the structure is simple, the number of charging areas is designed to be more reasonable, and multiple electronic products can be charged simultaneously, making it more convenient to use. In addition, charging indicators can be used to display the charging process and remind users. In addition, each charging area on the soft rubber is equipped with several heat dissipation holes, which provides good heat dissipation and extends the lifespan of the panel. Attached Figure Description

[0028] Figure 1 This is a process flow diagram of the dual-color injection molding process for the wireless charging panel in this invention; Figure 2 This is a flowchart illustrating the process flow of the dual-color injection molding process for the wireless charging panel in this invention. Figure 3 This is a flowchart illustrating the process flow of wireless charging panel molding in traditional technology. Figure 4 This is one of the front schematic diagrams of the wireless charging panel in this invention; Figure 5 This is the second schematic diagram of the front of the wireless charging panel in this invention; Figure 6 This is one of the schematic diagrams of the back of the wireless charging panel in this invention; Figure 7 This is the second schematic diagram of the back of the wireless charging panel in this invention; Figure 8 This is a schematic diagram showing the distribution of the skeleton and soft rubber in this invention.

[0029] The attached diagram lists the components represented by each number as follows: 1. Frame; 2. Adhesive film; 3. Charging area; 4. Divider; 5. Charging indicator; 6. Heat dissipation holes. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0032] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this technology based on the specific circumstances.

[0033] In the description of this application, spatial relation terms such as "below," "under," "below," "below," "above," "over," etc., are used herein to describe the relationship between one element or feature shown in the figures and other elements or features. It should be understood that, in addition to the orientation shown in the figures, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figures is flipped, an element or feature described as "below" or "under" or "below" of other elements or features will be oriented "above" other elements or features. Therefore, the exemplary terms "below" and "under" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein are interpreted accordingly.

[0034] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the invention can be made without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0035] Example 1 like Figures 1 to 8 As shown, this embodiment provides a dual-color injection molding process for a wireless charging panel, including the following specific steps: S1: The two-color material is injection molded in two colors to obtain a semi-finished product; S2: Decorate the surface of the semi-finished product to obtain a wireless charging panel.

[0036] During the processing, S1: the two-color material is injection molded in two colors to obtain a semi-finished product; S2: the surface of the semi-finished product is decorated to obtain a wireless charging panel, thus completing the processing and molding of the wireless charging panel. The molding process is convenient and efficient.

[0037] This embodiment features a simple process and a reasonable design. The frame (hard plastic), soft plastic, heat dissipation holes, lightning bolt logo, and light-transmitting structure are all integrally molded, making processing convenient and efficient. At the same time, the surface of the charging panel can achieve a variety of colors and styles (suede-like, soft-touch paint, light-transmitting, etc.), and the hardness is adjustable, increasing the skin-friendly feel and making it more aesthetically pleasing.

[0038] Example 2 Based on Example 1, in this example, step S1 includes the following specific steps: S11: Preheat the two-color injection molding machine and perform hard plastic injection molding on rigid PC / ABS or transparent PC materials; S12: Perform soft injection molding on TPE material to complete two-color injection molding.

[0039] During the processing, firstly, rigid PC / ABS or transparent PC material is injection molded; then, soft TPE material is injection molded to complete the two-color injection molding, which is convenient for molding. In addition, the two-color injection molding machine is preheated before hard and soft rubber injection molding to ensure the effect of subsequent hard and soft rubber injection molding.

[0040] Preferably, in this embodiment, the specific details of preheating the two-color injection molding machine are as follows: For hard plastic materials, the mold temperature is generally controlled between 40°C and 80°C, with 60°C being the preferred temperature.

[0041] For soft rubber materials, in order to ensure good adhesion, the mold temperature may need to be appropriately reduced, usually between 30°C and 60°C.

[0042] Based on the above solution, the dual-color injection molding process for wireless charging panels includes the following specific steps: S1: The two-color material is subjected to two-color injection molding to obtain a semi-finished product, specifically: S11: Preheat the two-color injection molding machine and perform hard plastic injection molding on rigid PC / ABS or transparent PC materials; S12: Perform soft injection molding on TPE material to complete two-color injection molding; S2: Decorate the surface of the semi-finished product to obtain a wireless charging panel.

[0043] Example 3 Based on Example 2, in this example, S11 includes the following specific steps: the hot runner temperature of the rigid PC / ABS is ≤250℃, the holding pressure is 60Mpa-90Mpa, and the rigid injection molding is completed.

[0044] The process is simple, and the parameters for rigid rubber injection molding are designed reasonably to ensure the quality of rigid rubber injection molding.

[0045] Preferably, in this embodiment, the hot runner temperature of the rigid PC / ABS is preferably 200°C, and the holding pressure is 70 MPa to complete the rigid injection molding.

[0046] Based on the above solution, the dual-color injection molding process for wireless charging panels includes the following specific steps: S1: The two-color material is subjected to two-color injection molding to obtain a semi-finished product, specifically: S11: Preheat the two-color injection molding machine and perform hard plastic injection molding on rigid PC / ABS or transparent PC materials, wherein... The hot runner temperature of the rigid PC / ABS is ≤250℃, and the holding pressure is 60Mpa-90Mpa to complete the rigid injection molding. S12: Perform soft injection molding on TPE material to complete two-color injection molding; S2: Decorate the surface of the semi-finished product to obtain a wireless charging panel.

[0047] Example 4 Based on any one of Examples 2 to 3, in this example, S12 includes the following specific steps: the temperature of the storage cylinder of the soft TPE is 130℃-220℃, and the holding pressure is 60Mpa-90Mpa.

[0048] The process is simple, and the parameters for soft rubber injection molding are designed reasonably to ensure the quality of hard rubber injection molding.

[0049] Preferably, in this embodiment, the temperature of the storage cylinder of the soft TPE is 170°C and the holding pressure is 70 MPa.

[0050] Based on the above solution, the dual-color injection molding process for wireless charging panels includes the following specific steps: S1: The two-color material is subjected to two-color injection molding to obtain a semi-finished product, specifically: S11: Preheat the two-color injection molding machine and perform hard plastic injection molding on rigid PC / ABS or transparent PC materials, wherein... The hot runner temperature of the rigid PC / ABS is ≤250℃, and the holding pressure is 60Mpa-90Mpa to complete the rigid injection molding. S12: Perform soft injection molding on the TPE material to complete two-color injection molding, wherein, The temperature of the storage cylinder for the soft TPE is 130℃-220℃, and the holding pressure is 60Mpa-90Mpa. S2: Decorate the surface of the semi-finished product to obtain a wireless charging panel.

[0051] Example 5 Based on any one of Examples 2 to 4, in this example, S0 is included before S1: drying the rigid plastic material PC / ABS at 80-100°C for 3-5 hours, and drying the soft plastic material TPE at 80-100°C for 1-2 hours.

[0052] The process is simple and reasonably designed. Before injection molding, the hard and soft rubber are dried to remove moisture and ensure the effect of subsequent two-color injection molding.

[0053] Preferably, in this embodiment, S0 above: the rigid plastic material PC / ABS is dried at 90°C for 4 hours, and the soft plastic material TPE is dried at 90°C for 1.5 hours.

[0054] Based on the above solution, the dual-color injection molding process for wireless charging panels includes the following specific steps: S0: Dry the rigid plastic material PC / ABS at 80-100℃ for 3-5 hours, and dry the soft plastic material TPE at 80-100℃ for 1-2 hours. S1: The two-color material is subjected to two-color injection molding to obtain a semi-finished product, specifically: S11: Preheat the two-color injection molding machine and perform hard plastic injection molding on rigid PC / ABS or transparent PC materials, wherein... The hot runner temperature of the rigid PC / ABS is ≤250℃, and the holding pressure is 60Mpa-90Mpa to complete the rigid injection molding. S12: Perform soft injection molding on the TPE material to complete two-color injection molding, wherein, The temperature of the storage cylinder for the soft TPE is 130℃-220℃, and the holding pressure is 60Mpa-90Mpa. S2: Decorate the surface of the semi-finished product to obtain a wireless charging panel.

[0055] Example 6 Based on any one of Examples 1 to 5, in this example, S2 includes the following specific steps: forming a textured pattern on the skin layer above the semi-finished product by laser etching.

[0056] The process is simple and well-designed. It uses laser etching to create textured patterns on the upper surface of the semi-finished product, making it more aesthetically pleasing and enhancing the overall premium feel of the product.

[0057] Based on the above solution, the dual-color injection molding process for wireless charging panels includes the following specific steps: S0: Dry the rigid plastic material PC / ABS at 80-100℃ for 3-5 hours, and dry the soft plastic material TPE at 80-100℃ for 1-2 hours. S1: The two-color material is subjected to two-color injection molding to obtain a semi-finished product, specifically: S11: Preheat the two-color injection molding machine and perform hard plastic injection molding on rigid PC / ABS or transparent PC materials, wherein... The hot runner temperature of the rigid PC / ABS is ≤250℃, and the holding pressure is 60Mpa-90Mpa to complete the rigid injection molding. S12: Perform soft injection molding on the TPE material to complete two-color injection molding, wherein, The temperature of the storage cylinder for the soft TPE is 130℃-220℃, and the holding pressure is 60Mpa-90Mpa. S2: A textured pattern is formed on the surface layer above the semi-finished product by laser etching, specifically: Laser etching is used to create different types of texture effects on the surface of the mold core, such as the high-end feel of suede texture.

[0058] Example 7 Based on any one of Examples 1 to 5, in this example, S2 includes the following specific steps: spraying paint onto the skin layer above the semi-finished product to form a soft-touch paint layer with a thickness ≥25um.

[0059] The process is simple and well-designed. By spraying paint onto the surface layer above the semi-finished product, a soft-touch paint layer with a thickness of ≥25um is formed, so as to achieve a skin-friendly feel for the entire product and make it more comfortable to touch.

[0060] Preferably, in this embodiment, paint is sprayed onto the skin layer above the semi-finished product to form a soft-touch paint layer with a thickness preferably 30 μm.

[0061] Based on the above solution, the dual-color injection molding process for wireless charging panels includes the following specific steps: S0: Dry the rigid plastic material PC / ABS at 80-100℃ for 3-5 hours, and dry the soft plastic material TPE at 80-100℃ for 1-2 hours. S1: The two-color material is subjected to two-color injection molding to obtain a semi-finished product, specifically: S11: Preheat the two-color injection molding machine and perform hard plastic injection molding on rigid PC / ABS or transparent PC materials, wherein... The hot runner temperature of the rigid PC / ABS is ≤250℃, and the holding pressure is 60Mpa-90Mpa to complete the rigid injection molding. S12: Perform soft injection molding on the TPE material to complete two-color injection molding, wherein, The temperature of the storage cylinder for the soft TPE is 130℃-220℃, and the holding pressure is 60Mpa-90Mpa. S2: Spray paint onto the skin layer above the semi-finished product to form a soft-touch paint layer with a thickness of ≥25um.

[0062] Example 8 Based on any one of Examples 1 to 5, in this example, S2 includes the following specific steps: spraying UV paint onto the upper surface of the semi-finished product, and simultaneously performing PVD plating on the lower surface of the semi-finished product.

[0063] This process is simple and reasonably designed. By spraying UV paint on the upper surface of the semi-finished product and simultaneously performing PVD coating on the lower surface, it achieves a decorative and translucent effect, making it more aesthetically pleasing.

[0064] Preferably, in this embodiment, the rigid adhesive is made of transparent PC material instead of PC / ABS material, and after two-color injection molding with the skin layer, it can achieve partial transparency and light transmission.

[0065] In addition, the aforementioned processes such as UV coating and PVD plating can achieve decorative effects such as electroplating when the lamp is not lit, and light transmission effects such as light transmission when the lamp is lit.

[0066] Based on the above solution, the dual-color injection molding process for wireless charging panels includes the following specific steps: S0: Dry the rigid plastic material PC / ABS at 80-100℃ for 3-5 hours, and dry the soft plastic material TPE at 80-100℃ for 1-2 hours. S1: The two-color material is subjected to two-color injection molding to obtain a semi-finished product, specifically: S11: Preheat the two-color injection molding machine and perform hard plastic injection molding on rigid PC / ABS or transparent PC materials, wherein... The hot runner temperature of the rigid PC / ABS is ≤250℃, and the holding pressure is 60Mpa-90Mpa to complete the rigid injection molding. S12: Perform soft injection molding on the TPE material to complete two-color injection molding, wherein, The temperature of the storage cylinder for the soft TPE is 130℃-220℃, and the holding pressure is 60Mpa-90Mpa. S2: UV paint is sprayed onto the upper surface of the semi-finished product, and PVD plating is performed on the lower surface of the semi-finished product.

[0067] The above-mentioned embodiments 6, 7 and 8 are parallel schemes, representing three different surface treatment methods for panel semi-finished products.

[0068] Example 9 Based on the above embodiments, this embodiment also provides a wireless charging panel, which is processed by the wireless charging panel dual-color injection molding process described above, including a frame 1 and an adhesive film 2. The adhesive film 2 is distributed on the upper surface of the frame 1 and forms at least one charging area 3. A charging module is installed on the frame 1 corresponding to each of the charging areas 3.

[0069] Preferably, in this embodiment, the skeleton 1 is a rectangular frame structure.

[0070] In addition, the aforementioned skeleton 1 can adopt a frame structure or a plate structure. When adopting a plate structure, several through holes need to be set in the area corresponding to the charging module to ensure wireless charging.

[0071] Preferably, in this embodiment, the skeleton 1 is preferably a PC / ABS skeleton. PC / ABS raw material is an engineering plastic alloy, which is called plastic alloy in the chemical industry. It is named PC+ABS because this material has both the excellent heat resistance, weather resistance, dimensional stability and impact resistance of PC resin and the excellent processing fluidity of ABS resin.

[0072] Preferably, in this embodiment, the above-mentioned adhesive film 2 is made of thermoplastic elastomer, also known as artificial rubber or synthetic rubber.

[0073] Preferably, in this embodiment, each of the above-mentioned charging areas 3 is preferably a rectangular area, which is convenient for charging and more aesthetically pleasing.

[0074] Preferably, in this embodiment, the charging module adopts a radial charging module in the prior art, whose core function is to transmit electrical energy to the receiving device through electromagnetic induction or resonance. Based on electromagnetic induction technology, the transmitting module generates an alternating magnetic field through a coil, and the receiving coil induces current and converts it into direct current to charge the device.

[0075] This embodiment also provides a wireless charging panel with a simple and reasonable structure. The frame (hard plastic), soft plastic, heat dissipation holes, lightning bolt logo, and light-transmitting structure are all integrally molded, which is convenient and efficient to process. At the same time, the surface of the charging panel can achieve a variety of colors and styles (suede-like, soft-touch paint, light-transmitting, etc.), and the hardness is adjustable, which increases the skin-friendly feel and is more aesthetically pleasing.

[0076] Example 10 Based on embodiment 9, in this embodiment, there are multiple charging areas 3, which are arranged side by side, and each of the multiple charging areas 3 is provided with a charging mark 5 and a number of heat dissipation holes 6.

[0077] The solution has a simple structure, and the number of charging areas 3 is designed to be multiple in a reasonable way, which can realize the simultaneous charging of multiple electronic products, making it more convenient to use. In addition, charging indicator 5 can be used to display the charging process and remind the user. In addition, each charging area 3 on the soft rubber is provided with several heat dissipation holes 6, which achieves good heat dissipation and extends the service life of the panel.

[0078] Preferably, in this embodiment, the upper surface of the adhesive film 2 is provided with two charging areas 3, which are arranged side by side.

[0079] Preferably, in this embodiment, a separator 4 is fixedly installed on the upper surface of the adhesive film 2 at the position between the two charging areas 3. The separator 4 can separate the charging devices in the two charging areas 3 to avoid mutual interference, and can also play a decorative role for the entire panel, making it more beautiful.

[0080] In addition, each of the above-mentioned dividing blocks 4 is preferably a long strip-shaped block structure, which is distributed perpendicular to the adhesive film 2 and extends along the direction from one end of the adhesive film 2 to the other end.

[0081] Alternatively, the number of charging areas 3 mentioned above can also be set to other suitable numbers, such as three, which can be selected according to the specific needs.

[0082] This invention provides a wireless charging panel and its two-color injection molding process, which includes the following specific steps: S0: Dry the rigid plastic material PC / ABS at 80-100℃ for 3-5 hours, and dry the soft plastic material TPE at 80-100℃ for 1-2 hours. S1: The two-color material is subjected to two-color injection molding to obtain a semi-finished product, specifically: S11: Preheat the two-color injection molding machine and perform hard plastic injection molding on rigid PC / ABS or transparent PC materials, wherein... The hot runner temperature of the rigid PC / ABS is ≤250℃, and the holding pressure is 60Mpa-90Mpa to complete the rigid injection molding. S12: Perform soft injection molding on the TPE material to complete two-color injection molding, wherein, The temperature of the storage cylinder for the soft TPE is 130℃-220℃, and the holding pressure is 60Mpa-90Mpa. S2: UV paint is sprayed onto the upper surface of the semi-finished product, and PVD plating is performed on the lower surface of the semi-finished product.

[0083] This invention provides a wireless charging panel and its dual-color injection molding process. The dual-color injection molding process is simple and reasonably designed. The frame (hard plastic), soft plastic, heat dissipation holes, lightning bolt logo, and light-transmitting structure are all integrally molded, which is convenient and efficient to process. At the same time, the surface of the charging panel can achieve a variety of colors and styles (suede-like, soft-touch paint, light transmission, etc.), and the hardness is adjustable, which increases the skin-friendly feel and is more aesthetically pleasing.

[0084] In addition, the process provided by this invention has the following advantages: 1. Simple process: The skeleton, soft rubber, and lightning bolt logo are all injection molded; 2. The equipment is relatively mature and stable; 3. The cost is relatively lower than that of laser encapsulation drilling; 4. Appearance defects such as bulging without covering, yellowing and charring of the mesh, and unclear lightning bolt markings; 5. The surface (TPE soft rubber) can be made in a variety of colors, so different types of TPE soft rubber can be replaced according to needs; 6. The surface (TPE soft rubber) hardness is adjustable, allowing you to adjust the corresponding ratio according to your needs; 7. The surface (TPE soft rubber) has a variety of textures and styles. The surface can be made into a suede texture or painted to add a soft touch to reflect a high-end feel similar to a leather or skin-friendly material. 8. The skeleton material was changed to transparent PC material, and after two-color injection molding with TPE, light transmission effect was achieved through processes such as PVD plating and laser engraving.

[0085] The wireless charging panel and its dual-color injection molding process provided by this invention include the following specific embodiments: (1) First implementation method: S0: The rigid plastic material PC / ABS is dried at 80°C for 3 hours, and the soft plastic material TPE is dried at 80°C for 1 hour. S1: The two-color material is subjected to two-color injection molding to obtain a semi-finished product, specifically: S11: Preheat the two-color injection molding machine and perform rigid injection molding on rigid PC / ABS materials, wherein... The hot runner temperature of the rigid PC / ABS is ≤250℃, and the holding pressure is 60Mpa to complete the rigid injection molding. S12: Perform soft injection molding on the TPE material to complete two-color injection molding, wherein, The temperature of the storage cylinder for the soft TPE is 130℃, and the holding pressure is 60Mpa. S2: UV paint is sprayed onto the upper surface of the semi-finished product, and PVD plating is performed on the lower surface of the semi-finished product.

[0086] (2) Second implementation method: S0: The rigid plastic material PC / ABS is dried at 90°C for 4 hours, and the soft plastic material TPE is dried at 90°C for 1.5 hours. S1: The two-color material is subjected to two-color injection molding to obtain a semi-finished product, specifically: S11: Preheat the two-color injection molding machine and perform rigid injection molding on rigid PC / ABS materials, wherein... The hot runner temperature of the rigid PC / ABS is ≤250℃, and the holding pressure is 70Mpa to complete the rigid injection molding. S12: Perform soft injection molding on the TPE material to complete two-color injection molding, wherein, The temperature of the storage cylinder for the soft TPE is 1700℃, and the holding pressure is 70MPa. S2: UV paint is sprayed onto the upper surface of the semi-finished product, and PVD plating is performed on the lower surface of the semi-finished product.

[0087] (3) The third implementation method: S0: The rigid plastic material PC / ABS is dried at 100°C for 5 hours, and the soft plastic material TPE is dried at 100°C for 2 hours. S1: The two-color material is subjected to two-color injection molding to obtain a semi-finished product, specifically: S11: Preheat the two-color injection molding machine and perform rigid injection molding on rigid PC / ABS materials, wherein... The hot runner temperature of the rigid PC / ABS is ≤250℃, and the holding pressure is 90Mpa to complete the rigid injection molding. S12: Perform soft injection molding on the TPE material to complete two-color injection molding, wherein, The temperature of the storage cylinder for the soft TPE is 220℃, and the holding pressure is 90Mpa. S2: UV paint is sprayed onto the upper surface of the semi-finished product, and PVD plating is performed on the lower surface of the semi-finished product.

[0088] (4) Fourth implementation method: S0: The rigid plastic material PC / ABS is dried at 75°C for 4.5 hours, and the soft plastic material TPE is dried at 95°C for 1-2 hours. S1: The two-color material is subjected to two-color injection molding to obtain a semi-finished product, specifically: S11: Preheat the two-color injection molding machine and perform rigid injection molding on rigid PC / ABS materials, wherein... The hot runner temperature of the rigid PC / ABS is ≤250℃, and the holding pressure is 85Mpa to complete the rigid injection molding. S12: Perform soft injection molding on the TPE material to complete two-color injection molding, wherein, The temperature of the storage cylinder for the soft TPE is 185℃, and the holding pressure is 75Mpa. S2: UV paint is sprayed onto the upper surface of the semi-finished product, and PVD plating is performed on the lower surface of the semi-finished product.

[0089] The process provided by this invention has the following advantages: 1. The process is simple, enabling the wireless charging logo and the wireless charging heat dissipation mesh (770 holes) to be formed simultaneously during two-color injection molding, replacing the long cycle process of laser drilling; 2. Good consistency in appearance and stable high-temperature resistance; 3. The epidermal layer above the skeleton layer allows for diverse processing methods in terms of color, hardness, and appearance.

[0090] The traditional manufacturing process for wireless charging panels involves hot pressing, cold pressing, and edge wrapping, among other methods (see...). Figure 3 While this process gives the wireless charging panel a soft-textured feel, it has the following drawbacks: The process is long and complex, requires high equipment precision, is costly, carries the risk of bulging, and has a high rate of defects in mesh and lightning bolt markings. The appearance color and feel are determined by the surface.

[0091] In comparison, the dual-color injection molding process for wireless charging panels provided by this invention has more advantages, resulting in better product quality and lower costs.

[0092] The two-color injection molding process involved in this invention involves injection molding using two colors or two different materials. This is commonly used for products requiring a combination of two colors or a combination of rigid and flexible materials, such as handles and buttons. By combining the two materials in a single molding process, the integration and quality of the product are improved.

[0093] Alternatively, this invention can employ a three-color injection molding process: using three colors or three materials for injection molding. Compared to two-color injection molding, this allows for richer color combinations and more complex functional designs, making it suitable for products with higher aesthetic requirements or those requiring diverse material properties.

[0094] In general, three-color injection molding is more complex than two-color injection molding in terms of process complexity, equipment requirements and cost, but it can provide greater design freedom and product added value.

[0095] In addition, regarding injection molding temperature, different materials require different injection molding temperatures. If different types of plastics (such as ABS, TPU, PP, etc.) are used, whether it is two-color or three-color injection molding, the corresponding injection molding temperature needs to be set according to the material characteristics. If the same material is used but the colors are different, the injection molding temperature is basically the same.

[0096] Three-color injection molding uses more materials and is more likely to involve different temperature controls, which places higher demands on the temperature control system of the injection molding machine.

[0097] While embodiments or examples of this disclosure have been described with reference to the accompanying drawings, it should be understood that the above embodiments are merely exemplary embodiments or examples, and the scope of the invention is not limited by these embodiments or examples, but only by the granted claims and their equivalents. Various elements in the embodiments or examples may be omitted or replaced by their equivalents. Furthermore, the steps may be performed in a different order than that described in this disclosure. Further, various elements in the embodiments or examples may be combined in various ways. Importantly, as the technology evolves, many elements described herein can be replaced by equivalents that appear after this disclosure.

Claims

1. A dual-color injection molding process for a wireless charging panel, characterized in that, The specific steps include the following: S1: The two-color material is injection molded in two colors to obtain a semi-finished product; S2: Decorate the surface of the semi-finished product to obtain a wireless charging panel.

2. The dual-color injection molding process for the wireless charging panel according to claim 1, characterized in that, S1 includes the following specific steps: S11: Preheat the two-color injection molding machine and perform hard plastic injection molding on rigid PC / ABS or transparent PC materials; S12: Perform soft injection molding on TPE material to complete two-color injection molding.

3. The dual-color injection molding process for the wireless charging panel according to claim 2, characterized in that, S11 includes the following specific steps: the hot runner temperature of the rigid PC / ABS is ≤250℃, the holding pressure is 60Mpa-90Mpa, and the rigid injection molding is completed.

4. The dual-color injection molding process for the wireless charging panel according to claim 2, characterized in that, S12 includes the following specific steps: the temperature of the storage cylinder of the soft TPE is 130℃-220℃, and the holding pressure is 60Mpa-90Mpa.

5. The dual-color injection molding process for the wireless charging panel according to claim 2, characterized in that, Before S1, S0 is included: drying the rigid plastic material PC / ABS at 80-100℃ for 3-5 hours, and drying the soft plastic material TPE at 80℃-100℃ for 1-2 hours.

6. The dual-color injection molding process for a wireless charging panel according to any one of claims 1-5, characterized in that, The S2 includes the following specific steps: forming a textured pattern on the skin layer above the semi-finished product by laser etching.

7. The dual-color injection molding process for a wireless charging panel according to any one of claims 1-5, characterized in that, The S2 includes the following specific steps: spraying paint onto the skin layer above the semi-finished product to form a soft-touch paint layer with a thickness of ≥25um.

8. The dual-color injection molding process for a wireless charging panel according to any one of claims 1-5, characterized in that, The S2 includes the following specific steps: spraying UV paint onto the upper surface of the semi-finished product, and simultaneously performing PVD plating on the lower surface of the semi-finished product.

9. A wireless charging panel, characterized in that, The wireless charging panel is manufactured by the dual-color injection molding process as described in any one of claims 1-8, and includes a frame (1) and a film (2). The film (2) is distributed on the upper surface of the frame (1) and forms at least one charging area (3). A charging module is installed on the frame (1) corresponding to each of the charging areas (3).

10. The wireless charging panel according to claim 9, characterized in that, The number of charging areas (3) is multiple, and the multiple charging areas (3) are arranged side by side, and each of the multiple charging areas (3) is provided with a charging mark (5) and a number of heat dissipation holes (6).

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