Electronic product rear shell injection mold and electronic product rear shell

Abstract

The utility model relates to an electronic product rear shell injection mold and an electronic product rear shell. A first mold and a second mold of the injection mold for the rear shell of the electronic product are oppositely arranged to limit a forming cavity, and an identification groove is formed in the inner wall of the forming cavity, so that an integrally formed rear shell body and identification characters convexly arranged on the rear shell body can be obtained after the forming cavity is subjected to injection molding; a texture groove is formed in one of the groove bottom of the identification groove and the area, located outside the identification groove, of the inner wall of the forming cavity, and the other one is a smooth surface; the smooth surface is used for forming a flat surface on the surface of the rear shell body outside the identification character or the surface of the identification character, the texture groove is used for forming a texture surface on the surface of the identification character or the surface of the rear shell body outside the identification character, and the reflective effects of the texture surface and the flat surface are different from each other. Therefore, the identification character is easy to distinguish, the procedure of arranging the identification character easy to distinguish on the rear shell body is reduced, and the cost is reduced while the manufacturing efficiency of the rear shell of the electronic product is improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electronic products, and in particular to an injection mold for a rear shell of an electronic product and a rear shell of an electronic product. Background Art

[0002] In today's era, electronic products have become a necessity in people's daily lives. The back shells of electronic products are usually equipped with LOGOs to distinguish products from different companies. Existing methods of setting LOGOs on the back shells of electronic products usually adopt injection molding back shell spraying + printing process, injection molding back shell spraying + laser engraving process, injection molding back shell spraying + bonding process, etc. However, printing LOGO on the back shell requires cleaning, irradiation and high-temperature baking processes, which are complicated and costly. Laser engraving LOGO on the back shell requires high equipment and labor costs in production due to the low production capacity of laser engraving. Bonding LOGO on the back shell requires glue dispensing and manual bonding, and the jig needs to be pressurized after the LOGO is bonded. The process takes a long time, consumes a lot of energy, and the cost of glue jigs is high. Utility Model Content

[0003] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides an electronic product rear shell injection mold and an electronic product rear shell.

[0004] The present disclosure provides an electronic product rear shell injection mold, comprising a first mold and a second mold, wherein the first mold and the second mold are relatively arranged to limit a molding cavity, and the molding cavity is used to contain an injection material to injection mold a rear shell body of the electronic product rear shell;

[0005] An identification groove is provided on the inner wall of the molding cavity, and the identification groove is used to accommodate part of the injection molding material to form a raised identification word on the rear shell body, and a texture groove is provided on one of the groove bottom of the identification groove and the inner wall of the molding cavity located outside the identification groove, and the other is a smooth surface;

[0006] The texture groove is used to form a textured surface on the surface of the logo characters or the surface of the rear shell body in an area outside the logo characters, and the smooth surface is used to form a flat surface on the surface of the rear shell body in an area outside the logo characters or the surface of the logo characters, and the reflective effects of the textured surface and the flat surface are different from each other.

[0007] Optionally, the texture groove is arranged at the groove bottom of the identification groove, and the inner wall of the molding cavity is located outside the identification groove to form the smooth surface.

[0008] Optionally, the bottom of the identification groove is formed as the smooth surface, and the texture groove is arranged on the surface of the inner wall of the molding cavity where the identification groove is provided, and is located in the area of ​​the inner wall of the molding cavity outside the identification groove.

[0009] Optionally, the texture groove includes a plurality of sub-molding grooves, and the plurality of sub-molding grooves are arranged at intervals at the groove bottom of the identification groove or at an area of ​​the inner wall of the molding cavity outside the identification groove.

[0010] Optionally, there is a set spacing between adjacent sub-forming grooves.

[0011] Optionally, the sub-forming groove has a set depth and a set width.

[0012] Optionally, the first mold includes a mold body and a mold core, the mold body is arranged opposite to the second mold, the mold core is arranged on a side of the mold body facing the second mold, the mold core protrudes toward the second mold, and the mold body is arranged opposite to the second mold and after being fitted, the space between the mold core and the second mold forms the molding cavity.

[0013] Optionally, the identification groove is arranged on a surface of the second mold facing the first mold.

[0014] The present disclosure also provides a back shell of an electronic product, including a back shell body and a logo character, wherein the back shell body and the logo character are produced by using an electronic product back shell injection mold as described in any one of the above items, and the logo character is convexly arranged on the surface of the back shell body, and the surface of one of the logo character and the back shell body is a textured surface, and the surface of the other is a flat surface.

[0015] Optionally, the electronic product back cover further comprises a coating layer, wherein the coating layer covers the back cover body and the logo, and the reflective effects of the portion of the coating layer covering the flat surface and the portion of the coating layer covering the textured surface are different from each other.

[0016] Compared with the prior art, the technical solution provided by the present invention has the following advantages:

[0017] The electronic product back shell injection mold and the electronic product back shell provided by the present invention are provided with a marking groove on the inner wall of the molding cavity of the electronic product back shell injection mold, the marking groove is used to accommodate part of the injection molding material to form a raised marking word on the back shell body, so that the molding cavity is subjected to an injection molding operation to obtain an integrally molded back shell body and the marking word; one of the groove bottom of the marking groove and the inner wall of the molding cavity located in the area outside the marking groove is provided with a texture groove, and the other is a smooth surface; the smooth surface is used for the surface of the back shell body located in the area outside the marking word or the area where the marking word is The surface forms a flat surface, and the texture groove is used to form a textured surface on the surface of the logo or the surface of the back shell body in the area outside the logo. The reflective effects of the textured surface and the flat surface are different from each other, so that the display effects of the textured surface and the flat surface can be distinguished from each other, so that the logo on the back shell body can be easily distinguished. With this arrangement, the back shell body formed by injection molding does not need to be additionally formed with easily recognizable logos through printing, laser engraving or patching processes, thereby improving the production efficiency of the back shell of electronic products while reducing the production cost of the back shell of electronic products. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 It is a structural schematic diagram of the injection mold according to the embodiment of the present disclosure;

[0021] Figure 2 This is a schematic diagram of the structure of the second mold in the embodiment of the present disclosure;

[0022] Figure 3 It is a partial enlarged structural schematic diagram of the second mold in the embodiment of the present disclosure;

[0023] Figure 4 for Figure 2 AA-direction cross-sectional structural diagram;

[0024] Figure 5 It is a schematic diagram of the structure of the rear shell of the electronic product described in the embodiment of the present disclosure.

[0025] Among them, 1, the first mold; 2, the second mold; 21, the smooth surface; 22, the identification groove; 23, the texture groove; 231, the sub-molding groove; 31, the back shell body; 32, the identification words; 33, the flat surface; 34, the texture surface. DETAILED DESCRIPTION

[0026] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0028] Reference Figures 1 to 4 As shown, an embodiment of the present disclosure provides an injection mold for a back shell of an electronic product, including a first mold 1 and a second mold 2. The first mold 1 and the second mold 2 are relatively arranged to limit a molding cavity, and the molding cavity is used to accommodate injection molding material to injection mold a back shell body 31 of the back shell of the electronic product.

[0029] Among them, an identification groove 22 is provided on the inner wall of the molding cavity, and the identification groove 22 is used to accommodate part of the injection molding material to form a raised identification word 32 on the rear shell body 31. A texture groove 23 is provided on one of the groove bottom of the identification groove 22 and the inner wall of the molding cavity in the area outside the identification groove 22, and the other is a smooth surface 21; the texture groove 23 is used to form a texture surface 34 on the surface of the identification word 32 or the surface of the rear shell body 31 in the area outside the identification word 32, and the smooth surface 21 is used to form a flat surface 33 on the surface of the rear shell body 31 in the area outside the identification word 32 or the surface of the identification word 32, and the reflective effects of the texture surface 34 and the flat surface 33 are different from each other.

[0030] It should be noted that the smooth surface 21 is a flat surface and is not used to limit the smoothness and friction coefficient of the surface. As long as the smooth surface 21 is a flat surface, the flat surface 33 formed by the smooth surface 21 and the texture surface 34 formed by the texture groove 23 can be distinguished from each other; it can be selected as a plane or a curved surface.

[0031] Specifically, the first mold 1 and the second mold 2 are arranged opposite to each other, and a protrusion can be optionally set on one side of the first mold 1 close to the second mold 2 as a mold core, and a side of the second mold 2 close to the first mold 1 is recessed to form a groove. After the first mold 1 and the second mold 2 are fitted together, the mold core is located inside the groove, and there is a space between the mold core and the inner wall of the groove to define a molding cavity. An injection port can be optionally set on the second mold 2 so that the melted injection molding material enters the molding cavity through the injection port, and the injection molding material forms the rear shell body 31 after cooling. Of course, an injection port can also be selected to be set on the first mold 1, so that the melted injection molding material enters the molding cavity through the injection port, and the injection molding material forms the rear shell body 31 after cooling.

[0032] The electronic product can be a mobile phone or a tablet computer. The rear shell body 31 serves as the structural basis of the rear shell of the electronic product. The rear shell of the electronic product is formed by spraying a colored coating on the rear shell body 31.

[0033] The shape of the above-mentioned identification groove 22 is processed according to the shape of the company's logo to be processed. The identification groove 22 can be processed by laser on the side of the second mold 2 facing the first mold 1. Of course, chemical etching can also be used to process a groove on the side of the second mold 2 facing the first mold 1 as the identification groove 22; the depth of the identification groove 22 is determined according to the shape of the company's logo to be processed, so that when the injection molding material fills the molding cavity, the injection molding material also fills the identification groove 22, so that after the injection molding material is cooled, the identification words 32 are formed on the rear shell body 31, and the identification words 32 are raised on the rear shell body 31.

[0034] The above-mentioned texture groove 23 can be selected to include a plurality of rectangular straight grooves, and the plurality of straight grooves are arranged at intervals to form the texture groove 23. The texture groove 23 can be selected to be set on the groove bottom of the identification groove 22, and the texture groove 23 covers the groove bottom of the identification groove 22, so that when the injection molding material fills the identification groove 22, the injection molding material will enter the texture groove 23. After the injection molding material is cooled, the injection molding material in the texture groove 23 can form a texture surface 34 on the surface of the rear shell body 31 or the surface of the identification character 32. The texture on the texture surface 34 is an interval-arranged prismatic texture. When light is irradiated on the texture surface 34, the light is reflected and scattered in multiple directions on the prismatic texture, and the flat surface 33 is a relatively smooth plane, so that when light is irradiated on the texture surface 34, the observation effect between the texture surface 34 and the flat surface 33 is different, so that a contrast effect is formed between the texture surface 34 and the flat surface 33, thereby improving the distinction of the identification character 32 on the rear shell body 31.

[0035] Of course, the texture groove 23 can be selected to be a plurality of curved grooves, and the plurality of curved grooves are arranged at intervals so that a corrugated texture can be formed after the injection molding material fills the texture groove 23; or the texture groove 23 can be a groove formed by splicing a straight groove and a curved groove, as long as the texture surface 34 formed after the injection molding material fills the texture groove 23 can have a different reflective effect from the flat surface 33, so that the texture surface 34 and the flat surface 33 can be more easily distinguished during observation; the texture surface 34 can be selected to be a texture formed by arranging a plurality of rectangular prism structures, and of course, the texture surface 34 can be selected to be a corrugated texture formed by arranging a plurality of curved prism structures, or the texture surface 34 can be selected to be a texture formed by combining rectangular straight prism structures and curved prism structures.

[0036] The above-mentioned smooth surface 21 can be selected as a smooth plane, so that the flat surface 33 is a plane. Of course, the smooth surface 21 can also be selected as a curved surface, so that the flat surface 33 is a curved surface, as long as the flat surface 33 formed by the smooth surface 21 and the textured surface 34 formed by the texture groove 23 have different reflective effects, so that the flat surface 33 and the textured surface 34 are easier to distinguish.

[0037] The above-mentioned texture groove 23 can also be selectively arranged on the opposite side of the first mold 1 or the second mold 2, and the bottom of the identification groove 22 is a smooth surface 21, so that the surface of the identification character 32 formed by the identification groove 22 is a smooth and flat surface, and the surface of the rear shell body 31 formed by the molding cavity is a textured surface 34, which can also make the identification character 32 contrast with the rear shell body 31 and make the identification character 32 more conspicuous subjectively.

[0038] After the rear shell body 31 and the logo 32 are manufactured, a spraying operation needs to be performed, so that a layer of coating is covered on the rear shell body 31 and the logo 32; the coating usually has a color. Since one of the rear shell body 31 and the logo 32 is a textured surface 34 and the other is a flat surface 33, and the coating is arranged on the textured surface 34 and the flat surface 33, the coating on the textured surface 34 will produce multi-angle reflection and scattering of light due to the texture, and the coating on the flat surface 33 will produce plane reflection and diffuse scattering of light. The same color coating is sprayed on the rear shell body 31 and the logo 32, and the textured surface 34 and the flat surface 33 are arranged on the textured surface 34. The color of the coating displayed on the surface 34 is different from the color displayed on the flat surface 33, that is, the subjective colors of the logo 32 and the rear shell body 31 are different, thereby making the logo 32 more conspicuous; since the logo 32 and the coating on the rear shell body 31 are the same color, the color difference formed by the different reflected light effects of the logo 32 and the rear shell body 31 belongs to the same color system, which can make the logo 32 and the color displayed on the rear shell body 31 form a color tracking effect, thereby improving the aesthetics of the rear shell body 31 and its logo 32 made by the injection mold.

[0039] When the injection mold provided by the embodiment of the present disclosure is used, taking the texture groove 23 set at the bottom of the identification groove 22 as an example, the first mold 1 and the second mold 2 are arranged relative to each other and fit together to form a molding cavity, and the melted injection molding material is injected into the molding cavity. The melted injection molding material fills the molding cavity, and the melted material fills the identification groove 22 and the texture groove 23 at the bottom of the identification groove 22. After the injection molding material in the molding cavity is cooled, a rear shell body 31 is formed, and a raised identification word 32 is provided on the rear shell body 31. The surface of the identification word 32 is the texture formed by the texture groove 23. Surface 34, the rear shell body 31 is a flat surface 33 formed by the smooth surface 21, and when light is irradiated on the rear shell body 31 and the logo word 32, the flat surface 33 undergoes planar reflection and diffuse scattering, and the textured surface 34 reflects and scatters the light at multiple angles, so that the subjective colors of the textured surface 34 and the flat surface 33 are different, that is, the rear shell body 31 and the logo word 32 have a subjective color difference, so that the logo word 32 can be directly identified on the rear shell body 31, and an easily recognizable logo word 32 is formed on the rear shell body 31 formed by injection molding by the injection mold.

[0040] The injection mold for the back shell of an electronic product provided in the embodiment of the present disclosure is provided with a marking groove 22 on the inner wall of the molding cavity of the injection mold, and the marking groove 22 is used to accommodate part of the injection molding material to form a raised marking word 32 on the back shell body 31, so that the molding cavity performs an injection molding operation or obtains an integrally molded back shell body 31 and the marking word 32; one of the groove bottom of the marking groove 22 and the inner wall of the molding cavity located in the area outside the marking groove 22 is provided with a texture groove 23, and the other is a smooth surface 21; so that after the injection molding of the electronic product back shell, a flat surface 33 is formed in the area of ​​the surface of the back shell body 31 located outside the marking word 32, and the marking word 32 is formed on the surface of the back shell body 31. A textured surface 34 is formed on the surface of 32; or a flat surface 33 is formed on the surface of the logo 32, and a textured surface 34 is formed on the surface of the rear shell body 31 in an area outside the logo 32, so that when a user observes the rear shell body 31 and the logo 32, the reflective effects of the textured surface 34 and the flat surface 33 are distinguishable from each other, that is, the display effects of the textured surface 34 and the flat surface 33 can be distinguished from each other, so that the user can easily recognize the logo 32. With this arrangement, the rear shell body 31 formed by injection molding does not need to be printed, laser engraved or pasted, and an easily recognizable logo can also be set, thereby improving the manufacturing efficiency of the rear shell body 31 while reducing the manufacturing cost.

[0041] Reference Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, the texture groove 23 is disposed at the bottom of the marking groove 22 , and the inner wall of the molding cavity outside the marking groove 22 is formed as a smooth surface 21 .

[0042] Specifically, a texture groove 23 can be selected to be provided at the bottom of the identification groove 22. The texture groove 23 forms a corrugated texture on the surface of the identification character 32 on the rear shell body 31 manufactured by the injection mold. The inner wall of the molding cavity is a smooth surface 21 except for the area of ​​the identification groove 22. The surface of the rear shell body 31 except for the part with the identification character 32 is flat and smooth and serves as a flat surface 33. There is a contrast effect between the identification character 32 and the rear shell body 31, making the identification character 32 easy to identify. Of course, the texture groove 23 can also be selected to be a plurality of semicircular grooves, so that the surface of the identification character 32 is subjectively a frosted texture, and the surface of the rear shell body 31 except for the part with the identification character 32 is flat and smooth and serves as a flat surface 33, making the identification character 32 easy to identify.

[0043] By setting the texture groove 23 at the bottom of the identification groove 22, the identification word 32 formed by the identification groove 22 has a texture surface 34, the volume of the identification word 32 is small, and the processing area of ​​the texture groove 23 is small, which can reduce the processing cost.

[0044] In other embodiments, the bottom of the identification groove 22 is formed as a smooth surface 21, and the texture groove 23 is arranged on the surface of the inner wall of the molding cavity where the identification groove 22 is provided, and is located in the area of ​​the inner wall of the molding cavity outside the identification groove 22.

[0045] Specifically, the identification groove 22 can be selected to be set on the side of the second mold 2 facing the first mold 1, and the side of the second mold 2 facing the first mold 1 except for the identification groove 22 is covered by the texture groove 23. The texture groove 23 can be selected to form a corrugated texture, and of course, the texture groove 23 can also be selected to form a frosted texture; the identification groove 22 can be selected to be set on the side of the first mold 1 facing the second mold 2, and at this time, the texture groove 23 is set on the side of the first mold 1 facing the second mold 2 except for the identification groove 22.

[0046] The bottom of the identification groove 22 is formed into a smooth surface 21, and the texture groove 23 is arranged on the surface of the inner wall of the molding cavity where the identification groove 22 is provided, and the inner wall of the molding cavity is located in the area outside the identification groove 22, so that the rear shell body 31 formed by injection molding in the molding cavity has a textured surface 34 except for the part with the identification characters 32, and the identification characters 32 is a flat surface 33, so that the identification characters 32 are easy to identify on the rear shell body 31, and can prevent slipping when the user touches the rear shell body 31, and can also make the appearance of the rear shell body 31 have a beautiful appearance.

[0047] In some embodiments, the identification groove 22 has a specified depth and a specified width.

[0048] Specifically, the specified depth of the logo groove 22 can be determined according to the shape and size of the company's logo, and the depth of the logo groove 22 can be selected between 0.05mm and 0.1mm. When the depth of the logo groove 22 is less than 0.05mm, the height of the logo character 32 formed on the rear shell body 31 is low and lacks three-dimensional effect. When the depth of the logo groove 22 is greater than 0.1mm, after the logo character 32 formed on the rear shell body 31 is coated, the coating on the logo character 32 is easily worn in the vibration wear resistance test.

[0049] The specified width of the logo groove 22 can be selected based on the size of the company's logo. The specified width of the logo groove 22 can be selected to be 0.03mm to 0.05mm larger than the logo font design size on one side of the logo font design size. When the set width of the logo groove 22 is 0.03mm smaller than the design size on one side of the logo font design size, the injection molding material will shrink when it cools down, which may cause the error between the size of the logo font 32 and the design size of the logo font to exceed the allowable range. When the set width of the logo groove 22 is 0.05mm larger than the design size on one side of the logo font design size, the error between the size of the logo font 32 formed after the injection molding material is cooled and the design size of the logo font is likely to exceed the allowable range.

[0050] By setting the logo groove 22 to have a set depth and a set width, the logo character 32 formed by injection molding in the logo groove 22 has a better three-dimensional effect on the rear shell body 31, and the error between the size of the logo character 32 and the design size of the logo font is within a reasonable range, so as to enhance the aesthetics of the rear shell body 31 and the logo character 32.

[0051] Reference Figure 2 , Figure 3 , Figure 4 As shown, in some embodiments, the texture groove 23 includes a plurality of sub-molding grooves 231, and the plurality of sub-molding grooves 231 are arranged at intervals in the area outside the identification groove 22 at the bottom of the groove of the identification groove 22 or the inner wall of the molding cavity, so that a texture surface 34 is formed on the rear shell body 31 except for a partial surface of the identification word 32 or the surface of the identification word 32.

[0052] Specifically, the sub-molding groove 231 can be selected as a straight groove, and multiple straight grooves are arranged at intervals to form a texture groove 23, so that the texture surface 34 formed by the texture groove 23 is a texture formed by multiple prismatic structures arranged at intervals. Of course, the sub-molding groove 231 can also be selected as a curved groove, and multiple curved grooves are arranged at intervals to form a corrugated texture on the texture surface 34. Of course, the sub-molding groove 231 can also be selected as a groove, and multiple grooves are evenly distributed on the identification groove 22 or the inner wall of the molding cavity provided with the identification groove 22, so that the texture surface 34 is a frosted surface formed by multiple protrusions.

[0053] By setting the texture groove 23 to include multiple sub-molding grooves 231, the multiple sub-molding grooves 231 are arranged at intervals on the groove bottom of the identification groove 22 or the inner wall of the molding cavity. By controlling the size of the sub-molding grooves 231 and the spacing between the multiple sub-molding grooves 231, the texture type of the texture surface 34 formed by the texture groove 23 can be controlled.

[0054] Reference Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, there is a set spacing between adjacent sub-forming grooves 231.

[0055] Specifically, the spacing can be selected to be determined according to the texture type required for the texture surface 34. For example, the smaller the spacing is set, the denser the arrangement of the sub-molding grooves 231, so that the texture formed on the texture surface 34 is finer and the scattering effect of light is better. The setting of the spacing also depends on the processing accuracy of the sub-molding grooves 231.

[0056] By setting a set interval between the sub-forming grooves 231, the set interval can control the texture density of the texture surface 34 formed by the texture grooves 23, thereby affecting the difference between the light reflection effect of the texture surface 34 and the light reflection effect of the flat surface 33.

[0057] Reference Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, the sub-molding groove 231 has a set depth and a set width.

[0058] Specifically, the depth can be set to any value between 0.04 mm and 0.06 mm. If the depth is set to less than 0.04 mm, the texture on the texture surface 34 formed by the texture groove 23 has a weak multi-angle reflection effect on light, making the logo 32 difficult to recognize. If the depth is set to greater than 0.06 mm, the molten injection molding material is not easy to completely fill the sub-molding groove 231 due to surface tension.

[0059] The width can be set to any value between 0.13mm and 0.23mm. If the width is set to less than 0.13mm, the linear structure formed by the sub-molding groove 231 will be smaller in volume, so that the texture on the texture surface 34 formed by the texture groove 23 has a weaker effect on the multi-angle reflection of light, making the logo 32 difficult to recognize; if the width is set to greater than 0.23mm, the width of the linear structure formed by the sub-molding groove 231 will be larger, which will weaken the multi-angle reflection effect of the texture surface 34 on light, making the logo 32 difficult to recognize.

[0060] Since the size of the sub-molding groove 231 is small, it is difficult to observe it in the actual size drawing. Figure 2 and Figure 3The neutron forming groove 231 is an enlarged structural schematic diagram.

[0061] By setting the sub-molding groove 231 to have a set depth and a set width, the sub-molding groove 231 is processed with the set depth and the set width as a reference to produce a qualified texture groove 23 .

[0062] Reference Figure 1 and Figure 2 As shown, in some embodiments, the first mold 1 includes a mold body and a mold core. The mold body is arranged opposite to the second mold 2. The mold core is arranged on the side of the mold body facing the second mold 2. The mold core protrudes toward the second mold 2. After the mold body and the second mold 2 are arranged opposite to each other and fitted together, the space between the mold core and the second mold 2 forms a molding cavity.

[0063] Specifically, the mold body can be selected to be a rectangular block structure, and the mold core is convexly arranged on one side of the mold body facing the second mold 2. After the mold body is fitted with the second mold 2, the mold core and the second mold 2 are spaced apart, so that the space between the mold core and the second mold 2 serves as a molding cavity; the side of the rear shell body 31 where the logo 32 is formed is the outer side, and the mold core on the mold body can be used to limit the inner shape of the rear shell body 31, so that the mold core and the second mold 2 cooperate with each other, and after the injection molding material is injected into the molding cavity, the rear shell body 31 is directly molded in the molding cavity by injection molding operation.

[0064] By providing a mold core on the first mold 1, the mold core cooperates with the second mold 2 to define the shape of the molding cavity, which is beneficial for directly molding the rear shell body 31 in the molding cavity.

[0065] Reference Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, the identification groove 22 is disposed on the side of the second mold 2 facing the first mold 1. In this way, the identification word 32 formed by the identification groove 22 can be formed on the outer side of the rear shell body 31, so that after the rear shell body 31 is assembled into a product, the identification word 32 on the rear shell body 31 can be observed by the user.

[0066] Specifically, the second mold 2 can be selected to be recessed on one side facing the first mold 1 to form an identification groove 22. Since the mold core of the first mold 1 is used to limit the inner shape of the rear shell body 31, the identification groove 22 is set on the second mold 2 to form an identification word 32 on the outer side of the rear shell body 31. After the rear shell body 31 is assembled into a product, the identification word 32 on the rear shell body 31 can be observed by the user.

[0067] Reference Figure 5As shown, the embodiment of the present disclosure also provides a back shell of an electronic product, including a back shell body 31 and a logo character 32. The back shell body 31 and the logo character 32 are formed by adopting the electronic product back shell injection mold as described in any of the above embodiments. The logo character 32 is convexly arranged on the surface of the back shell body 31. The surface of one of the logo character 32 and the back shell body 31 is a textured surface 34, and the surface of the other is a flat surface 33.

[0068] Specifically, molten injection material can be injected into the molding cavity of the injection mold, and the injection material can be cooled to form the back shell body 31 and the logo 32. The surface of the logo 32 can be selected as a textured surface 34, and the back shell body 31 except the logo 32 can be a flat surface 33. Of course, the back shell body 31 except the logo 32 can also be selected as a flat surface 33, and the surface of the logo 32 can be a textured surface 34, so that the logo 32 and the back shell body 31 have different reflection effects on light, making the logo 32 easy to identify on the back shell body 31.

[0069] By using the electronic product back cover injection mold as described above to manufacture the electronic product back cover, the textured surface 34 and the flat surface 33 have different reflection effects on light, so that the logo 32 on the back cover body 31 is easy to identify. The electronic product back cover does not need to be printed, laser engraved or chip-mounted to form an easily recognizable logo 32, which simplifies the production process, improves production efficiency and reduces production costs.

[0070] In some embodiments, the electronic product back cover further includes a coating layer, which covers the back cover body 31 and the logo 32 , and the reflective effects of the portion of the coating layer covering the flat surface 33 and the portion of the coating layer covering the textured surface 34 are different from each other.

[0071] Specifically, a spraying process can be selected to form a coating layer on the back shell body 31 and the logo 32. The spraying process includes three-coat three-bake spraying, NCVM four-coat four-bake process and other coating processes. The coating layer can be selected to be the same color, and the coating layer fits the shell and the logo 32. The texture of the textured surface 34 will also be displayed on the coating layer. The portion of the coating layer covering the textured surface 34 reflects and scatters the light at multiple angles, and the portion of the coating layer covering the flat surface 33 performs planar reflection and diffuse scattering of the light, so that the color displayed by the portion of the coating layer covering the textured surface 34 is different from the color displayed by the portion of the coating layer covering the flat surface 33, so that the user can subjectively easily identify the textured surface 34 covered by the coating layer.

[0072] By setting the electronic product back shell to also include a coating layer, the coating layer can change the color of the electronic product back shell, and the coating layer shell plays a role in protecting the electronic product back shell. Since the coating layer is adhered to and covered on the electronic product back shell, the portion of the coating layer covering the texture surface 34 can display the texture of the texture surface 34, thereby making the logo 32 of the electronic product back shell provided with the coating layer easy to identify.

[0073] The electronic product back shell injection mold provided by the embodiment of the present disclosure is used in a specific manner. The first mold 1 and the second mold 2 are arranged opposite to each other and fit together to form a molding cavity. The melted injection molding material is injected into the space between the mold core and the second mold 2. The melted injection molding material fills the molding cavity, and the melted material fills the identification groove 22. The injection molding material fills the multiple sub-molding grooves 231 at the bottom of the identification groove 22. After the injection molding material in the molding cavity is cooled, a back shell body 31 and an identification word 32 are formed. The back shell body 31 has a raised identification word 32 formed by the identification groove 22. The surface of the identification word 32 is a textured surface 34 formed by the texture groove 23. The back shell body 31 is a flat surface 33 formed by the smooth surface 21. The identification characters 32 are sprayed so that the surface of the electronic product shell has a coating layer covered by the same coating material. When light is irradiated on the coating layer, the coating layer covering the flat surface 33 undergoes planar reflection and diffuse scattering, and the coating layer covering the textured surface 34 reflects and scatters the light at multiple angles, so that the subjective colors of the partial coating layer covering the textured surface 34 and the partial coating layer covering the flat surface 33 are different, so that the identification characters 32 covered by the coating layer can be directly identified on the rear shell body 31, and the easily recognizable identification characters 32 can be directly formed on the rear shell body 31 of the electronic product rear shell formed by the injection mold through injection molding and spraying, thereby simplifying the production process of the electronic product rear shell and reducing the production cost of the electronic product rear shell.

[0074] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0075] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An injection mold for a rear shell of an electronic product, characterized in that: It comprises a first mold (1) and a second mold (2), wherein the first mold (1) and the second mold (2) are relatively arranged to limit a molding cavity, and the molding cavity is used to contain injection molding material to injection mold a rear shell body (31) of a rear shell of an electronic product; An identification groove (22) is provided on the inner wall of the molding cavity, the identification groove (22) is used to accommodate a portion of the injection molding material to form a raised identification word (32) on the rear shell body (31), and a texture groove (23) is provided on one of the groove bottom of the identification groove (22) and the inner wall of the molding cavity in the area outside the identification groove (22), and the other is a smooth surface (21); The texture groove (23) is used to form a textured surface (34) on the surface of the identification character (32) or on the surface of the rear shell body (31) in an area outside the identification character (32); the smooth surface (21) is used to form a flat surface (33) on the surface of the rear shell body (31) in an area outside the identification character (32) or on the surface of the identification character (32); the reflective effects of the textured surface (34) and the flat surface (33) are different from each other.

2. The electronic product rear shell injection mold according to claim 1, characterized in that: The texture groove (23) is arranged at the groove bottom of the identification groove (22), and the inner wall of the molding cavity in the area outside the identification groove (22) is formed as the smooth surface (21).

3. The electronic product rear shell injection mold according to claim 1, characterized in that: The bottom of the identification groove (22) is formed as the smooth surface (21), and the texture groove (23) is arranged on the surface of the inner wall of the molding cavity on which the identification groove (22) is provided, and is located in the area of ​​the inner wall of the molding cavity outside the identification groove (22).

4. The electronic product rear shell injection mold according to claim 1, characterized in that: The texture groove (23) comprises a plurality of sub-molding grooves (231), and the plurality of sub-molding grooves (231) are arranged at intervals at the groove bottom of the identification groove (22) or at the inner wall of the molding cavity in an area outside the identification groove (22).

5. The electronic product rear shell injection mold according to claim 4, characterized in that: There is a set spacing between adjacent sub-forming grooves (231).

6. The electronic product rear shell injection mold according to claim 4, characterized in that: The sub-forming groove (231) has a set depth and a set width.

7. The electronic product rear shell injection mold according to claim 1, characterized in that: The first mold (1) comprises a mold body and a mold core, the mold body is arranged opposite to the second mold (2), the mold core is arranged on a side of the mold body facing the second mold (2), the mold core protrudes toward the second mold (2), and after the mold body and the second mold (2) are arranged opposite to each other and fitted together, the space between the mold core and the second mold (2) forms the molding cavity.

8. The electronic product rear shell injection mold according to claim 7, characterized in that: The marking groove (22) is arranged on a surface of the second mold (2) facing the first mold (1).

9. A rear shell of an electronic product, characterized in that: The electronic product comprises a rear shell body (31) and a logo mark (32), wherein the rear shell body (31) and the logo mark (32) are manufactured by using the electronic product rear shell injection mold according to any one of claims 1 to 8, and the logo mark (32) is convexly arranged on the surface of the rear shell body (31), and the surface of one of the logo mark (32) and the rear shell body (31) is a textured surface (34), and the surface of the other is a flat surface (33).

10. The electronic product rear cover according to claim 9, characterized in that: The electronic product rear shell further comprises a coating layer, the coating layer covers the rear shell body (31) and the identification character (32), and the reflective effects of the portion of the coating layer covering the flat surface (33) and the portion of the coating layer covering the textured surface (34) are different from each other.

Images