Nano injection mold for middle frame of mobile phone

Abstract

The utility model discloses a mobile phone middle frame nanometer injection mold which comprises an upper mold plate, a lower mold plate and a peripheral insert, and the middle area of the upper surface of the lower mold plate is an aluminum piece positioning area; the peripheral insert is positioned and mounted on the lower template through the insert positioning block; during mold closing injection molding, the middle aluminum part of the mobile phone middle frame is positioned and placed in the aluminum part positioning area of the lower mold plate, and the area between the peripheral insert and the middle aluminum part is an injection molding cavity; a plurality of upper mold mounting holes which are arranged at intervals are formed in the upper mold plate, and a sprue bush is embedded in each upper mold mounting hole; and lower mold runners communicating with the injection molding cavity are formed in the upper surface of the lower mold plate and correspond to the sprue bushes correspondingly. By means of the structural design, the mobile phone middle frame nano injection mold has the advantages of being novel in structural design and high in injection molding efficiency, and mobile phone middle frame nano injection molding can be effectively achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to nanometer injection mold technical field especially, it relates to a kind of nanometer injection mold for mobile phone middle frame. BACKGROUND

[0002] As Figure 1 As shown in the figure, mobile phone middle frame 6 finished product includes middle aluminum part 61, nanometer injection part 62 that is injection molded in the edge position of middle aluminum part 61 by nanometer injection molding process;Nanometer injection molding process is realized by the corresponding nanometer injection mold of mobile phone middle frame.

[0003] Among them, patent number is: ZL201922300655.1, patent name is: injection mold for nanometer forming plastic layer on metal surface, and it specifically discloses the following technical solutions: an injection mold for nanometer forming plastic layer on metal surface, which comprises a fixed mold, a metal body and a movable mold;The fixed mold is provided with a positioning protruding portion, and the lower end of the positioning protruding portion is provided with two positioning pins;The end face of the open end of the metal body is provided with positioning holes corresponding to the two positioning pins respectively, the metal body is sleeved on the positioning protruding portion, and each positioning pin is inserted into the corresponding positioning hole;The fixed mold is provided with a fixed mold insert that slides up and down, the fixed mold insert is covered on the outer circumferential side of the metal body, and a gap is formed between the fixed mold insert and the metal body, and the gap is communicated with the glue inlet of the injection mold;The movable mold cooperates with the fixed mold, and presses the positioning protruding portion, the metal body and the fixed mold insert.

[0004] It should be pointed out that, for the above-mentioned injection mold for nanometer forming plastic layer on metal surface, for mobile phone middle frame product, since the nanometer injection part of mobile phone middle frame is injection molded in the edge position of middle aluminum part, and the nanometer injection part is an overall full-enclosing elongated structure, the above-mentioned injection mold for nanometer forming plastic layer on metal surface cannot stably injection mold the nanometer injection part of mobile phone middle frame. UTILITY MODEL CONTENTS

[0005] The utility model aims at the deficiency of prior art and provides a kind of nanometer injection mold for mobile phone middle frame, which is novel in structure design, high in injection molding efficiency, and can effectively realize nanometer injection molding of mobile phone middle frame.

[0006] To achieve the above object, the utility model realizes by the following technical scheme.

[0007] A kind of nanometer injection mold for mobile phone middle frame, it includes upper die plate, lower die plate located in the lower of upper die plate, the middle region of lower die plate upper surface is aluminum part positioning area for positioning and placing middle aluminum part;

[0008] The nano-injection mold for the mobile phone frame also includes an outer insert with a full-circle shape and the contour shape of the molding surface is consistent with the contour shape of the outer surface of the mobile phone frame. The lower mold plate is equipped with several spaced insert positioning blocks corresponding to the outer insert. The outer insert is positioned and installed on the lower mold plate by the insert positioning blocks. During injection molding, the central aluminum part of the mobile phone frame is positioned in the aluminum part positioning area of ​​the lower mold plate, and the area between the outer insert and the central aluminum part is the injection molding cavity.

[0009] The upper mold plate has several spaced upper mold mounting holes, and each upper mold mounting hole is fitted with a sprue sleeve; the upper surface of the lower mold plate has a lower mold runner corresponding to each sprue sleeve, which communicates with the injection molding cavity.

[0010] The lower template has a positioning block mounting groove for each of the insert positioning blocks, and each insert positioning block is respectively embedded in the corresponding positioning block mounting groove.

[0011] Each insert positioning block is provided with a horizontal positioning surface, and the outer edge of the horizontal positioning surface of each insert positioning block is provided with an upward protruding positioning protrusion.

[0012] The peripheral insert is composed of two C-shaped insert units joined together.

[0013] The upper template has six spaced-apart mounting holes.

[0014] Compared with the prior art, the present invention has the following beneficial effects: Specifically, the present invention injects molten rubber through multiple sprue sleeves at the same time, and injects molten rubber into the injection molding cavity through multiple lower mold channels at the same time. This structural design can effectively improve the efficiency of nano-injection molding of mobile phone mid-frames; the mobile phone mid-frame nano-injection mold of the present invention has the advantages of novel structural design and high injection molding efficiency, and can effectively realize nano-injection molding of mobile phone mid-frames. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention.

[0016] Figure 1 This is a structural diagram of the mobile phone's mid-frame.

[0017] Figure 2 This is a schematic diagram of the structure of this utility model.

[0018] Figure 3 This is an exploded view of the present invention.

[0019] Figure 4 for Figure 3 A magnified view of a portion of the image.

[0020] In Figures 1 to 4 comprise:

[0021] 1 - the upper die plate; 11 - the upper die mounting hole; 2 - the lower die plate; 21 - the lower die runner; 22 - the positioning block mounting groove; 3 - the aluminum part positioning area; 4 - the peripheral insert; 41 - the forming surface; 42 - the insert monomer; 5 - the insert positioning block; 51 - the horizontal positioning surface; 52 - the positioning convex part; 6 - the mobile phone middle frame; 61 - the middle aluminum part; 62 - the nano injection part. DETAILED DESCRIPTION

[0022] The utility model will be described below in combination with specific embodiments.

[0023] Embodiment one, as Figures 2 to 4 shown, a mobile phone middle frame nano injection mold, comprising upper die plate 1, lower die plate 2 located below upper die plate 1, the middle area of the upper surface of lower die plate 2 is aluminum part positioning area 3 for positioning and placing middle aluminum part 61.

[0024] Among them, as Figures 2 to 4 shown, the mobile phone middle frame nano injection mold further comprises peripheral insert 4 in full surrounding shape and the contour shape of forming surface 41 is consistent with the contour shape of the outer surface of mobile phone middle frame, lower die plate 2 is provided with a plurality of interval arrangement insert positioning blocks 5 corresponding to peripheral insert 4, and peripheral insert 4 is positioned and installed on lower die plate 2 through insert positioning block 5; when closing mold injection, the middle aluminum part 61 of mobile phone middle frame is positioned and placed in the aluminum part positioning area 3 of lower die plate 2, and the area between peripheral insert 4 and middle aluminum part 61 is an injection molding chamber.

[0025] Further, as Figures 2 to 4 shown, upper die plate 1 is provided with a plurality of interval arrangement upper die mounting holes 11, and each upper die mounting hole 11 is respectively embedded with a sprue bushing; the upper surface of lower die plate 2 is respectively provided with lower die runner 21 corresponding to each sprue bushing, which is communicated with the injection molding chamber. Specifically, as Figure 2 and Figure 3 shown, upper die plate 1 is provided with six interval arrangement upper die mounting holes 11; of course, the above quantity does not constitute a limitation to the embodiment one.

[0026] In the process of nano injection molding of mobile phone middle frame by using the mobile phone middle frame nano injection mold of the embodiment one, the steps include:

[0027] Step a, in the open mold state, first positioning and placing the middle aluminum part 61 of mobile phone middle frame in the aluminum part positioning area 3 of lower die plate 2, the aluminum part positioning area 3 is profiled design and the shape of aluminum part positioning area 3 is consistent with the shape of middle aluminum part 61, that is, the aluminum part positioning area 3 can accurately position middle aluminum part 61 on lower die plate 2;

[0028] Step b, install the peripheral insert 4 to the lower mold plate 2, the peripheral insert 4 is positioned by the insert positioning block 5 to ensure that the peripheral insert 4 is accurately positioned and placed on the lower mold plate 2;

[0029] Step c, perform the mold closing action and the upper mold plate 1 and the lower mold plate 2 are closed, at this time the peripheral insert 4 and the middle aluminum part 61 are respectively pressed and fixed by the upper mold plate 1 and the lower mold plate 2, and the area between the peripheral insert 4 and the middle aluminum part 61 is the injection molding chamber;

[0030] Step d, start the injection molding machine and perform the injection molding action, in this process, each sprue bushing injects molten glue into the corresponding lower mold runner 21 of the lower mold plate 2, and injects into the injection molding chamber through the corresponding lower mold runner 21 The sprue to complete the nano injection molding of the mobile phone middle frame;

[0031] Step e, the upper mold plate 1 and the lower mold plate 2 perform the mold opening action, the nano injection molding part 62 and the middle aluminum part 61 form an integral whole, the nano injection molding of the mobile phone middle frame is completed, and the mobile phone middle frame is taken out from the lower mold plate 2 together with the peripheral insert 4;

[0032] Step f, split the peripheral insert 4 and the mobile phone middle frame.

[0033] It should be emphasized that in the process of completing the nano injection molding of the mobile phone middle frame by using the mobile phone middle frame nano injection molding mold of the present embodiment, the present embodiment simultaneously injects molten glue through multiple sprue bushes, and simultaneously injects molten glue into the injection molding chamber through multiple lower mold runners 21. This structural design can effectively improve the efficiency of nano injection molding of the mobile phone middle frame.

[0034] As can be seen from the above, through the above structural design, the mobile phone middle frame nano injection molding mold of the present embodiment has the advantages of novel structural design and high injection molding efficiency, and can effectively realize the nano injection molding of the mobile phone middle frame.

[0035] Embodiment two, as shown in Figure 3 and Figure 4 The difference between the present embodiment and embodiment one is that the lower mold plate 2 is provided with a positioning block installation slot 22 corresponding to each insert positioning block 5, and each insert positioning block 5 is embedded in the corresponding positioning block installation slot 22.

[0036] Each insert positioning block 5 is provided with a horizontal positioning surface 51, and the outer end edge of the horizontal positioning surface 51 of each insert positioning block 5 is provided with a positioning protrusion 52 protruding upward.

[0037] In the process of positioning the peripheral insert 4 by the insert positioning block 5, the lower surface of the peripheral insert 4 is positioned by the horizontal positioning surface 51 of the insert positioning block 5, and the vertical surface of the peripheral insert 4 is positioned by the positioning protrusion 52 of the insert positioning block 5.

[0038] As shown in Figure 3, the embodiment three is different from the embodiment one in that the peripheral insert 4 is spliced by two insert units 42 each in a "C" shape. Figure 3

[0039] For the peripheral insert 4 with the split structure as described above, the following effects can be achieved, specifically: facilitating the split of the mobile phone middle frame and the peripheral insert 4.

[0040] The above is only the preferred embodiment of the present application, and for those skilled in the art, the specific implementation and application range can be changed according to the idea of the present application, and the content of the specification should not be understood as a limitation of the present application.​

Claims

1. A mobile phone middle frame nano injection mold, comprising an upper mold plate (1) and a lower mold plate (2) located below the upper mold plate (1), wherein the middle area of the upper surface of the lower mold plate (2) is an aluminum part positioning area (3) for positioning and placing a middle aluminum part (61); characterized in that The mobile phone middle frame nano injection mold further comprises a peripheral insert (4) in a full-enclosing shape, and the profile shape of the molding surface (41) of the peripheral insert (4) is consistent with the profile shape of the outer surface of the mobile phone middle frame; the lower mold plate (2) is provided with a plurality of insert positioning blocks (5) arranged at intervals corresponding to the peripheral insert (4), and the peripheral insert (4) is positioned and installed on the lower mold plate (2) through the insert positioning blocks (5); during mold closing and injection molding, the middle aluminum part (61) of the mobile phone middle frame is positioned and placed on the aluminum part positioning area (3) of the lower mold plate (2), and the area between the peripheral insert (4) and the middle aluminum part (61) is an injection molding cavity; The upper mold plate (1) is provided with a plurality of upper mold installation holes (11) arranged at intervals, and each upper mold installation hole (11) is embedded with a sprue bushing; the upper surface of the lower mold plate (2) is provided with a lower mold flow channel (21) corresponding to each sprue bushing and communicating with the injection molding cavity. 2.The nano-injection mold for a mobile phone middle frame according to claim 1, wherein: The lower mold plate (2) is provided with a positioning block installation slot (22) corresponding to each insert positioning block (5); each insert positioning block (5) is embedded in the corresponding positioning block installation slot (22). Each insert positioning block (5) is provided with a horizontal positioning surface (51), and the outer end edge of the horizontal positioning surface (51) of each insert positioning block (5) is provided with a positioning protrusion (52) protruding upward.

3. The mobile phone middle frame nano-injection mold according to claim 1, characterized in that: The peripheral insert (4) is formed by splicing two insert monomers (42) each in a "C" shape.

4. The mobile phone middle frame nano-injection mold according to claim 1, characterized in that: The upper mold plate (1) is provided with six upper mold installation holes (11) arranged at intervals.

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