CN112060647A - Manufacturing process of shell with wireless charging function - Google Patents
Manufacturing process of shell with wireless charging function Download PDFInfo
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- CN112060647A CN112060647A CN202010844862.8A CN202010844862A CN112060647A CN 112060647 A CN112060647 A CN 112060647A CN 202010844862 A CN202010844862 A CN 202010844862A CN 112060647 A CN112060647 A CN 112060647A
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- sheet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/006—Producing casings, e.g. accumulator cases
Abstract
The invention discloses a manufacturing process of a shell with a wireless charging function, which comprises the following steps: manufacturing a color layer on the sheet; manufacturing a texture layer on the color layer; performing vacuum coating on the texture layer to form a coating layer; manufacturing a coating protective layer on the coating layer; carrying out high-pressure or hot-press molding on the sheet to enable the sheet to be adaptive to the shape of an injection mold, so as to obtain a profiling sheet; fusing a wireless charging coil into the contoured sheet; and (4) placing the profiling sheet welded with the wireless charging coil into an injection mold for injection molding to obtain a shell finished product. The shell produced by the manufacturing process has better wireless charging performance, and is favorable for wireless charging of electronic products using the shell. In addition, after the shell has the wireless charging function, the wireless charging function is moved to the shell from the inside of the electronic product, so that certain internal space can be saved, the size of the electronic product can be further reduced, or the saved space can be used for other more favorable purposes.
Description
Technical Field
The invention relates to a shell of an electronic product, in particular to a manufacturing process of a shell with a wireless charging function.
Background
With the rapid development of information technology, electronic products are more and more widely applied, and the variety of products is more and more. Users have requirements for the housing of these electronic products, in addition to quality and aesthetic level, and also have requirements for the wireless charging performance of the housing. The existing wireless charging technology is that a wound copper coil is usually adhered to the inner surface of a shell of an electronic product in an adhesion mode, the electronic product is usually carried by people and is frequently used, the electronic product can move along with people to generate vibration in the using process, and in the method, the copper coil is easy to fall off or even short circuit occurs in the wireless charging equipment in the vibration process, so that the wireless charging performance is poor. Therefore, it is desirable to improve the manufacturing process of the housing of the electronic product, so as to improve the wireless charging performance of the electronic product.
Disclosure of Invention
In order to solve the problems in the prior art, the invention discloses a manufacturing process of a shell with a wireless charging function, so that the shell produced according to the manufacturing process has the wireless charging function.
The purpose of the invention is realized by the following technical scheme:
a manufacturing process of a shell with a wireless charging function comprises the following steps:
step S1, manufacturing a color layer on the sheet;
step S2, manufacturing a texture layer on the color layer;
step S3, performing vacuum coating on the texture layer to form a coating layer;
step S4, manufacturing a coating protective layer on the coating layer;
s5, carrying out high-pressure or hot-press molding on the sheet obtained in the step S4 to enable the sheet to be matched with an injection mold in shape, and obtaining a profiling sheet;
step S6, welding the wireless charging coil into the copy sheet obtained in step S5;
and S7, placing the profiling sheet welded with the wireless charging coil into an injection mold for injection molding to obtain a finished shell product.
Further, the specific process of step S1 includes:
step S101, blending printing ink;
and S102, printing the prepared printing ink on a printing plate by using an offset press by using a sheet as the printing plate, and keeping the ink and the water balanced on the printing plate by means of two rules of incompatibility of oil and water and selective adsorption of the printing plate to realize the dot transfer.
Further, the specific process of step S2 includes:
step S201, pouring UV glue on a mold with texture;
step S202, placing the base shell in a mold, contacting one surface of the color layer with UV glue, and uniformly coating a layer of UV glue on the color layer by using a roller press;
step S203, after exposure and solidification are carried out by using a metal halogen lamp or an LED, the base shell is separated from the mold, and the texture of the UV glue is transferred to the color layer of the base shell to form a texture layer.
Further, the main spectrum of the halogen lamp or the LED is between 350nm and 450nm, and the exposure time is 3 to 5 seconds.
Further, the specific process of step S4 is as follows:
step S401, performing ink silk-screen printing on the coating layer by using a 100-mesh and 600-mesh screen plate;
s402, baking at 50-80 ℃ for 10-60 minutes;
and S403, repeating the step S401 and the step S402 for 2-8 times, wherein the baking temperature is 60-85 ℃ for the last 1 time, and the baking time is 60-120 minutes.
Further, methods of welding the wireless charging coil into the profile sheet include, but are not limited to, ultrasonic welding or CNC welding.
Further, the specific process of welding the wireless charging coil into the profile sheet by using the ultrasonic welding method is as follows:
the current of 50/60 Hz is converted into high-frequency electric energy by an ultrasonic generator, and the high-frequency electric energy is converted into mechanical vibration with equal frequency by a transducer; the mechanical vibration is transmitted to the welding head through the amplitude transformer device; the welding head transmits the received vibration energy to the joint part of the plastic material layer of the coil to be welded; at the joint, the vibrational energy is frictionally converted to heat energy which melts the joint of the plastic material layer and sinks the coil therein.
Further, the specific process of welding the wireless charging coil into the profile sheet by using the CNC welding method is as follows:
and a control system of the CNC machining center controls a machine tool to cut the sheet according to a set digital program instruction, the maximum shape of the coil is cut on the sheet, the coil is implanted manually, and the coil is fixed by glue.
Further, the step S7 is a specific process of injection molding:
and (4) placing the profile sheet obtained in the steps S1 to S6 into a cavity of an injection mold, enabling the profile sheet to be tightly attached to the inner side wall of the cavity of the mold, injecting liquid plastic, and cooling to form a plastic shell finished product.
A manufacturing process of a shell with a wireless charging function is characterized by comprising the following steps:
step R1, manufacturing a color layer on the sheet;
step R2, manufacturing a texture layer on the color layer;
step R3, performing vacuum coating on the texture layer to form a coating layer;
step R4, manufacturing a coating protective layer on the coating layer;
r5, carrying out high-pressure or hot-press molding on the sheet obtained from R4 to enable the sheet to be matched with an injection mold in shape, and obtaining a profiling sheet;
r6, placing the copying sheet obtained by the R5 into a front mold cavity of an injection mold;
and R7, forming a fixed groove in the rear model cavity of the injection mold, placing the wireless charging coil in the fixed groove, and then closing the front mold and the rear mold of the injection mold for injection molding to obtain a shell finished product.
Further, the specific process of step R1 includes:
r101, blending printing ink;
and R102, using the sheet as a printing plate, printing the prepared printing ink on the printing plate by using an offset press, and keeping the ink and the water balanced on the printing plate by virtue of two rules of oil-water incompatibility and selective adsorption of the printing plate to realize the dot transfer.
Further, the specific process of step R2 includes:
step R201, pouring UV glue on the mold with the texture;
step R202, placing the sheet in a mold, enabling one side of the color layer to be in contact with UV glue, and uniformly coating a layer of UV glue on the color layer by using a roller press;
and step R203, after exposure and solidification are carried out by using a metal halogen lamp or an LED, separating the sheet from the texture mould, and transferring the texture of the UV glue to the color layer of the sheet to form the texture layer.
Further, the main spectrum of the halogen lamp or the LED is between 350nm and 450nm, and the exposure time is 3 to 5 seconds.
Further, the specific process of step R4 is as follows:
step R401, performing ink silk-screen printing on the coating layer by using a 100-mesh and 600-mesh screen plate;
step R402, baking at 50-80 ℃ for 10-60 minutes;
and step R403, repeating the step R401 and the step R402, repeating for 2-8 times, wherein the baking temperature is 60-85 ℃ for the last 1 time, and the baking time is 60-120 minutes.
Further, the step R7 is specifically performed by the following steps:
and (3) closing the front mold and the rear mold of the injection mold, injecting liquid plastic, and cooling to form a plastic shell finished product.
The shell produced by the manufacturing process has better wireless charging performance, and is favorable for wireless charging of electronic products using the shell. In addition, after the shell has the wireless charging function, the wireless charging function is moved to the shell from the inside of the electronic product, so that certain internal space can be saved, the size of the electronic product can be further reduced, or the saved space can be used for other more favorable purposes, such as increasing the battery capacity and prolonging the standby time.
Drawings
FIG. 1 is a diagram illustrating the steps of a process for manufacturing a housing with a wireless charging function according to an embodiment of the present invention;
fig. 2 is a process step diagram of manufacturing a housing with a wireless charging function according to a second embodiment of the present invention;
FIG. 3 is a schematic diagram of an apparatus for welding a wireless charging coil into a profile sheet using ultrasonic welding in accordance with an embodiment of the present invention;
FIG. 4 is a schematic diagram of an apparatus for welding a wireless charging coil into a profile sheet using CNC welding, in accordance with an embodiment of the present invention.
Detailed Description
The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the described embodiments are merely illustrative of some, and not restrictive, of the embodiments of the disclosure. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
Example one
The manufacturing process of the shell with the wireless charging function, disclosed by the invention, has the process step diagram as shown in figure 1, and comprises the following steps of:
step S1 is to produce a color layer on the sheet.
The sheet material can be PET, PC, TPU, PVC, PMMA, wood, leather, glass fiber, basalt fiber or carbon fiber.
In a preferred embodiment provided by the present application, the color layer is a color gradient effect, which makes the housing more aesthetically pleasing. The specific manufacturing process of the color layer comprises the following steps:
and step S101, preparing printing ink.
Adjusting the proportion of the printing ink and adding additives in proportion.
And S102, printing the prepared printing ink on the printing plate by using an offset press by using a sheet as the printing plate, and keeping the ink and the water balanced on the printing plate by means of two rules of incompatibility of oil and water and selective adsorption of the printing plate to realize dot transfer so as to achieve the effects of brightening and increasing the transmittance of the image of the printed matter.
And step S2, manufacturing a texture layer on the color layer.
The purpose of this step is to make the shell appear textured.
In a preferred embodiment provided by the present application, the specific manufacturing process of the texture layer is as follows:
step S201, pouring UV glue on a mold with texture;
step S202, placing the sheet in a mold, enabling one side of the color layer to be in contact with UV glue, and uniformly coating a layer of UV glue on the color layer by using a roller press;
step S203, after exposure and solidification are carried out by using a metal halogen lamp or an LED, the sheet is separated from the texture mold, and the UV glue texture is transferred to the color layer of the sheet to form a texture layer.
Preferably, the main spectrum of the halogen lamp or the LED is between 350nm and 450nm, and the exposure time is 3 to 5 seconds.
And step S3, performing vacuum coating on the texture layer to form a coating layer.
The purpose of this step is to protect the effect of the texture layer and the color brightness of the color layer.
In a preferred embodiment provided by the present application, the specific manufacturing process of the coating layer is as follows: and (3) depositing the electroplating solution on the surface of the texture layer by evaporating or sputtering the electroplating solution under vacuum by using a coating device to form a coating layer.
And step S4, manufacturing a coating protective layer on the coating layer.
The purpose of this step is to protect the coating from external factors such as oxidation, discoloration, etc.
In a preferred embodiment provided by the present application, the specific manufacturing process of the coating protection layer is as follows:
step S401, performing ink silk-screen printing on the coating layer by using a 100-mesh and 600-mesh screen plate;
s402, baking at 50-80 ℃ for 10-60 minutes;
and S403, repeating the step S401 and the step S402 for 2-8 times, wherein the baking temperature is 60-85 ℃ for the last 1 time, and the baking time is 60-120 minutes, so that the product is completely dried, and the adhesive force of the subsequent process is improved.
And step S5, carrying out high-pressure or hot-press molding on the sheet obtained in the step S4 to enable the sheet to be matched with the shape of an injection mold, and obtaining the profiling sheet.
In a preferred embodiment provided by the present application, the specific manufacturing process of the dummy sheet is as follows: the sheet obtained in step S4 is IR-baked to soften to the extent of ductile stretching, and blown out into a desired shape at a high pressure of 50MPA to 120MPA or pressed out into a desired shape in the form of a male-female die. The temperature of the IR baking is between 150 and 250 ℃.
Step S6, welding the wireless charging coil into the copy sheet obtained in S5.
In a preferred embodiment provided herein, the welding method by which the coils are embedded in the sheet material includes, but is not limited to, ultrasonic welding or CNC welding or injection molding.
Preferably, the specific process of welding the wireless charging coil into the profile sheet by using the ultrasonic welding method comprises the following steps:
the current of 50/60 Hz is converted into high-frequency electric energy by an ultrasonic generator, and the high-frequency electric energy is converted into mechanical vibration with equal frequency by a transducer; the mechanical vibration is transmitted to the welding head through the amplitude transformer device; the welding head transmits the received vibration energy to the joint part of the plastic material layer of the coil to be welded; at the joint, the vibrational energy is frictionally converted to heat energy which melts the joint of the plastic material layer and sinks the coil therein.
CNC machining refers to computer numerical control precision machining. The specific process of welding the coil in the plastic material layer by using the CNC welding method is as follows:
the control system of the CNC machining center controls the machine tool to finish automatic start, stop, reversing and speed change of a main shaft according to a digital program instruction, can automatically control the feeding speed, direction and machining path to machine, can select a cutter, adjust the tool-cutting amount and the walking track according to the dimension of the cutter, can finish various auxiliary actions required in machining, and further finish sheet cutting. In this way, the maximum shape of the coil is cut out of the sheet, and the coil is implanted manually and fixed by glue.
And S7, placing the profiling sheet welded with the wireless charging coil into an injection mold for injection molding to obtain a finished shell product.
And (4) placing the profile sheet obtained in the steps S1 to S6 into a cavity of an injection mold, enabling the profile sheet to be tightly attached to the inner side wall of the cavity of the mold, injecting liquid plastic, and cooling to form a plastic shell finished product.
The injection molding process comprises the following steps: and (3) injecting plastic particles into the cavity of the injection mold in a screw heating hydraulic mode (the temperature of the screw is 230-360 degrees). The operation sequence is as follows: placing the molded shell → mold closing → premolding → reverse shrinking → nozzle advancing → injection → pressure maintaining → nozzle retreating → cooling → mold opening → ejection → door opening → workpiece taking → next shell injection molding.
Example two
The manufacturing process of the shell with the wireless charging function, disclosed by the invention, has the process step diagram as shown in figure 1, and comprises the following steps of:
and step R1, manufacturing a color layer on the sheet.
The sheet material can be PET, PC, TPU, PVC, PMMA, wood, leather, glass fiber, basalt fiber or carbon fiber.
In a preferred embodiment provided by the present application, the color layer is a color gradient effect, which makes the housing more aesthetically pleasing. The specific manufacturing process of the color layer comprises the following steps:
and R101, preparing printing ink.
Adjusting the proportion of the printing ink and adding additives in proportion.
And R102, using a sheet as a printing plate, printing the prepared printing ink on the printing plate by using an offset press, and keeping the ink and the water balanced on the printing plate by means of two rules of oil-water insolubility and selective adsorption of the printing plate to realize dot transfer so as to achieve the effects of brightening and anti-reflection of the image of the printed matter.
And step R2, manufacturing a texture layer on the color layer.
The purpose of this step is to make the shell appear textured.
In a preferred embodiment provided by the present application, the specific manufacturing process of the texture layer is as follows:
step R201, pouring UV glue on the mold with the texture;
step R202, placing the sheet in a mold, enabling one side of the color layer to be in contact with UV glue, and uniformly coating a layer of UV glue on the color layer by using a roller press;
and step R203, separating the sheet from the texture mold after exposure and solidification are carried out by using a metal halogen lamp or an LED, and transferring the texture of the UV glue onto the color layer of the sheet to form a texture layer.
Preferably, the main spectrum of the halogen lamp or the LED is between 350nm and 450nm, and the exposure time is 3 to 5 seconds.
And R3, performing vacuum coating on the texture layer to form a coating layer.
The purpose of this step is to protect the effect of the texture layer and the color brightness of the color layer.
In a preferred embodiment provided by the present application, the specific manufacturing process of the coating layer is as follows: and (3) depositing the electroplating solution on the surface of the texture layer by evaporating or sputtering the electroplating solution under vacuum by using a coating device to form a coating layer.
And R4, manufacturing a coating protective layer on the coating layer.
The purpose of this step is to protect the coating from external factors such as oxidation, discoloration, etc.
In a preferred embodiment provided by the present application, the specific manufacturing process of the coating protection layer is as follows:
step R401, performing ink silk-screen printing on the coating layer by using a 100-mesh and 600-mesh screen plate;
step R402, baking at 50-80 ℃ for 10-60 minutes;
and R403, repeating the R401 and the R402 for 2-8 times, wherein the baking temperature is 60-85 ℃ for the last 1 time, and the baking time is 60-120 minutes, so that the product is completely dried, and the adhesive force of the subsequent process is improved.
And R5, carrying out high-pressure or hot-press molding on the sheet obtained from R4 to enable the sheet to be matched with the shape of an injection mold, and obtaining the profiling sheet.
In a preferred embodiment provided by the present application, the specific manufacturing process of the dummy sheet is as follows: the sheet obtained in step S4 is IR-baked to soften to the extent of ductile stretching, and blown out into a desired shape at a high pressure of 50MPA to 120MPA or pressed out into a desired shape in the form of a male-female die. The temperature of the IR baking is between 150 and 250 ℃.
And step R6, placing the copy sheet obtained by the step R5 into a front mold cavity of an injection mold.
And R7, forming a fixed groove in the rear model cavity of the injection mold, placing the wireless charging coil in the fixed groove, and then closing the front mold and the rear mold of the injection mold for injection molding to obtain a shell finished product.
The injection molding process comprises the following steps: and (3) injecting plastic particles into the cavity of the injection mold in a screw heating hydraulic mode (the temperature of the screw is 230-360 degrees). The operation sequence is as follows: placing the molded shell → mold closing → premolding → reverse shrinking → nozzle advancing → injection → pressure maintaining → nozzle retreating → cooling → mold opening → ejection → door opening → workpiece taking → next shell injection molding.
The above description is for the purpose of illustrating embodiments of the invention and is not intended to limit the invention, and it will be apparent to those skilled in the art that any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the invention shall fall within the protection scope of the invention.
Claims (15)
1. A manufacturing process of a shell with a wireless charging function is characterized by comprising the following steps:
step S1, manufacturing a color layer on the sheet;
step S2, manufacturing a texture layer on the color layer;
step S3, performing vacuum coating on the texture layer to form a coating layer;
step S4, manufacturing a coating protective layer on the coating layer;
s5, carrying out high-pressure or hot-press molding on the sheet obtained in the step S4 to enable the sheet to be matched with an injection mold in shape, and obtaining a profiling sheet;
step S6, welding the wireless charging coil into the copy sheet obtained in step S5;
and S7, placing the profiling sheet welded with the wireless charging coil into an injection mold for injection molding to obtain a finished shell product.
2. The manufacturing process of a casing with a wireless charging function according to claim 1, wherein the specific process of step S1 includes:
step S101, blending printing ink;
and S102, printing the prepared printing ink on a printing plate by using an offset press by using a sheet as the printing plate, and keeping the ink and the water balanced on the printing plate by means of two rules of incompatibility of oil and water and selective adsorption of the printing plate to realize the dot transfer.
3. The manufacturing process of a casing with a wireless charging function according to claim 1, wherein the specific process of step S2 includes:
step S201, pouring UV glue on a mold with texture;
step S202, placing the sheet in a mold, enabling one side of the color layer to be in contact with UV glue, and uniformly coating a layer of UV glue on the color layer by using a roller press;
and S203, separating the sheet from the texture mold after exposure and solidification by using a metal halogen lamp or an LED, and transferring the UV glue texture to the color layer of the sheet to form the texture layer.
4. The manufacturing process of a casing with a wireless charging function according to claim 3, wherein the main spectrum of the halogen lamp or the LED is 350nm-450nm, and the exposure time is 3-5 seconds.
5. The manufacturing process of a casing with a wireless charging function according to claim 1, wherein the specific process of step S4 is as follows:
step S401, performing ink silk-screen printing on the coating layer by using a 100-mesh and 600-mesh screen plate;
s402, baking at 50-80 ℃ for 10-60 minutes;
and S403, repeating the step S401 and the step S402 for 2-8 times, wherein the baking temperature is 60-85 ℃ for the last 1 time, and the baking time is 60-120 minutes.
6. The process for manufacturing a casing with a wireless charging function according to claim 1, wherein the step S6 is performed by welding the wireless charging coil into the profile sheet by a method including but not limited to ultrasonic welding or CNC welding.
7. The manufacturing process of the shell with the wireless charging function according to claim 6, wherein the specific process of welding the wireless charging coil into the profile sheet by using the ultrasonic welding method comprises the following steps:
the current of 50/60 Hz is converted into high-frequency electric energy by an ultrasonic generator, and the high-frequency electric energy is converted into mechanical vibration with equal frequency by a transducer; the mechanical vibration is transmitted to the welding head through the amplitude transformer device; the welding head transmits the received vibration energy to the joint part of the plastic material layer of the coil to be welded; at the joint, the vibrational energy is frictionally converted to heat energy which melts the joint of the plastic material layer and sinks the coil therein.
8. The manufacturing process of the shell with the wireless charging function, according to claim 6, is characterized in that the CNC welding method is used for welding the wireless charging coil into the profile sheet by the following specific processes:
and a control system of the CNC machining center controls a machine tool to cut the plastic material layer according to a set digital program instruction, a coil with the maximum shape is cut on the sheet, and the coil is implanted manually and fixed by glue.
9. The manufacturing process of the casing with the wireless charging function according to claim 1, wherein the step S7 comprises the following specific steps: and (4) placing the profile sheet obtained in the steps S1 to S6 into a cavity of an injection mold, enabling the profile sheet to be tightly attached to the inner side wall of the cavity of the mold, injecting liquid plastic, and cooling to form a plastic shell finished product.
10. A manufacturing process of a shell with a wireless charging function is characterized by comprising the following steps:
step R1, manufacturing a color layer on the sheet;
step R2, manufacturing a texture layer on the color layer;
step R3, performing vacuum coating on the texture layer to form a coating layer;
step R4, manufacturing a coating protective layer on the coating layer;
r5, carrying out high-pressure or hot-press molding on the sheet obtained from R4 to enable the sheet to be matched with an injection mold in shape, and obtaining a profiling sheet;
r6, placing the copying sheet obtained by the R5 into a front mold cavity of an injection mold;
and R7, forming a fixed groove in the rear model cavity of the injection mold, placing the wireless charging coil in the fixed groove, and then closing the front mold and the rear mold of the injection mold for injection molding to obtain a shell finished product.
11. The manufacturing process of a casing with a wireless charging function according to claim 10, wherein the specific process of step R1 includes:
r101, blending printing ink;
and R102, using the sheet as a printing plate, printing the prepared printing ink on the printing plate by using an offset press, and keeping the ink and the water balanced on the printing plate by virtue of two rules of oil-water incompatibility and selective adsorption of the printing plate to realize the dot transfer.
12. The manufacturing process of a casing with a wireless charging function according to claim 10, wherein the specific process of step R2 includes:
step R201, pouring UV glue on the mold with the texture;
step R202, placing the sheet in a mold, enabling one side of the color layer to be in contact with UV glue, and uniformly coating a layer of UV glue on the color layer by using a roller press;
and step R203, after exposure and solidification are carried out by using a metal halogen lamp or an LED, separating the sheet from the texture mould, and transferring the texture of the UV glue to the color layer of the sheet to form the texture layer.
13. The manufacturing process of a casing with wireless charging function as claimed in claim 12, wherein the main spectrum of the halogen lamp or the LED is between 350nm and 450nm, and the exposure time is 3 to 5 seconds.
14. The manufacturing process of a casing with a wireless charging function according to claim 10, wherein the specific process of step R4 is as follows:
step R401, performing ink silk-screen printing on the coating layer by using a 100-mesh and 600-mesh screen plate;
step R402, baking at 50-80 ℃ for 10-60 minutes;
and step R403, repeating the step R401 and the step R402, repeating for 2-8 times, wherein the baking temperature is 60-85 ℃ for the last 1 time, and the baking time is 60-120 minutes.
15. The manufacturing process of a casing with a wireless charging function according to claim 10, wherein the step R7 comprises the following specific steps: and (3) closing the front mold and the rear mold of the injection mold, injecting liquid plastic, and cooling to form a plastic shell finished product.
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| CN110744942A (en) * | 2019-11-15 | 2020-02-04 | Oppo广东移动通信有限公司 | Manufacturing method of gradient shell, gradient shell and electronic equipment |
| CN111315169A (en) * | 2020-03-09 | 2020-06-19 | Oppo广东移动通信有限公司 | Shell assembly, electronic equipment and manufacturing method of shell assembly |
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