Forming mold core for decorating part

Abstract

The forming die core for the decorating part comprises a die core plate, a plurality of installation cavities are formed in the die core plate in a rectangular array mode, a die core block is fixedly arranged in each installation cavity, each installation cavity comprises a first cavity body, a second cavity body and a third cavity body from top to bottom in sequence, and an inwards-concave forming groove is formed in the top of each first cavity body in the annular circumferential direction of the first cavity body. A step part is arranged on the side edge, close to the forming groove, of the mold core block, a first inclined face is arranged on the outer side of the forming groove and matched with the bottom of the step part, a second inclined face is arranged at the bottom end of the step part, a first exhaust channel is formed by the distance between the first inclined face and the second inclined face and communicated with the forming groove, and the first exhaust channel is communicated with the mounting cavity. The forming mold core for the decorating part is simple in structure and ingenious in layout, the exhaust channels are formed in the inner sides of the forming grooves of the decorating part, gas in the cavities can be rapidly exhausted out of the mold body, and the phenomenon that products are poor after mold injection molding is conducted is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, concretely is a kind of for the forming mould core of decorative part. BACKGROUND

[0002] Modern society technology develops rapidly, and electronic equipment such as mobile phone gradually becomes people's life necessities, and general electronic equipment such as mobile phone is equipped with camera assembly for shooting demand, with the increasing demand of people on mobile phone appearance and comfort, more and more high requirements are put forward to the decorative part on camera, and the decorative part used in the existing camera assembly is mostly injection molded, and when the molten raw material is injected into the injection mold, a part of air is extruded into the forming cavity in the injection mold, and a small part of air is wrapped by the molten raw material and cannot be discharged, resulting in the phenomenon of air hole and other appearance defects on the formed product, which affects the quality of product processing. UTILITY MODEL CONTENTS

[0003] The utility model aims at providing a kind of for the forming mould core of decorative part to solve the technical problem in the background art.

[0004] To achieve the foregoing object, the utility model provides the following technical scheme:

[0005] A kind of for the forming mould core of decorative part, including mould core plate, there are several installation cavities in rectangular array on the mould core plate, the installation cavity is oval structure, single installation cavity is fixed with mould core block, the installation cavity is sequentially first cavity, second cavity and third cavity from top to bottom, the length of first cavity, second cavity and third cavity decreases, the top of first cavity is provided with the concave forming groove along its annular one-way direction, the side of mould core block close to forming groove is provided with step portion, the outside of forming groove is provided with several first inclined grooves of concave structure, the first inclined groove is through groove structure, the bottom end surface of first inclined groove is the first inclined surface and the bottom of step portion is matched, the bottom end of step portion is provided with second inclined surface, the spacing between first inclined surface and second inclined surface forms first exhaust passage, first exhaust passage is communicated with forming groove, first exhaust passage is communicated with installation cavity.

[0006] The outer side wall of the mold core block in the second cavity is a third inclined surface with a slope structure, the spacing between the third inclined surface and the inner wall of the second cavity forms a second exhaust channel, the width of the second exhaust channel increases from top to bottom, and the top of the second exhaust channel is communicated with the first exhaust channel; the third exhaust channel is formed by the spacing between the bottom of the second cavity and the mold core block, the third exhaust channel is communicated with the second exhaust channel, the bottom of the mounting cavity is provided with a plurality of first insertion holes for mounting the ejector pins, the mold core block is correspondingly provided with a second insertion hole communicated with the first insertion hole, and the first insertion hole and the second insertion hole are both communicated with the third exhaust channel.

[0007] The width of the first exhaust channel is 0.005-0.006mm.

[0008] The bottom of the mold core block is provided with at least one first fixing hole, the bottom of the corresponding mold core plate of the single mounting cavity is provided with a second fixing hole communicated with the first fixing hole, and a screw is mounted in the second fixing hole and is threadedly connected with the first fixing hole.

[0009] Compared with the prior art, the forming mold core for the decoration piece has simple structure and ingenious layout, the exhaust channel is arranged at the inner side position of the forming groove of the decoration piece, the gas in the cavity can be quickly exhausted outside the mold body, the phenomenon of product defect after mold injection is solved, and the defect of the injection product is effectively avoided. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 The three-dimensional structure of the present application is shown in the figure.

[0011] Figure 2 The half-section structure of the present application is shown in the figure.

[0012] Figure 3 :The enlarged view of A in the figure. Figure 2

[0013] Figure 4 The enlarged view of B in the figure. Figure 2

[0014] The three-dimensional structure of the single mounting cavity is shown in the figure. Figure 5

[0015] The half-section structure of the single mounting cavity is shown in the figure. Figure 6 DETAILED DESCRIPTION

[0016] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application.

[0017] Specific embodiment 1: please refer to Figures 1 to 6 ​The utility model discloses an embodiment of a kind of forming mould core for decoration piece, including mould core plate 1, there are several installation cavities in rectangular array on mould core plate 1, installation cavity is oval structure, single installation cavity is fixed with mould core block 2, installation cavity is sequentially from top to bottom first cavity 101, second cavity 102 and third cavity 103, the length of first cavity 101, second cavity 102 and third cavity 103 decreases, the top of first cavity 101 is provided with concave forming groove 101-1 along its annular one-way direction, the side of mould core block 2 close to forming groove 101-1 is provided with step portion 201, the outside of forming groove 101-1 is provided with several first inclined grooves 101-2 of concave structure, several first inclined grooves 101-2 are arranged along the one-way annular interval of forming groove 101-1, first inclined groove 101-2 is through groove structure, that is, first inclined groove 101-2 penetrates the upper and lower ends of the outside end face of forming groove 101-1, the bottom end face of first inclined groove 101-2 is the first inclined surface 101-3 and the bottom of step portion 201 is matched, the bottom end of step portion 201 is provided with second inclined surface 201-1, the interval between first inclined surface 101-3 and second inclined surface 201-1 forms first exhaust passage 3, first exhaust passage 3 communicates with forming groove 101-1, first exhaust passage 3 communicates with installation cavity, the width W of first exhaust passage 3 is 0.005-0.006mm, in the embodiment, the width W of first exhaust passage 3 is 0.005mm.

[0018] The outside wall of mould core block 2 in second cavity 102 is third inclined surface 202 of inclined surface structure, the interval between third inclined surface 202 and the inner wall of second cavity 102 forms second exhaust passage 4, the width of second exhaust passage 4 increases from top to bottom, the top of second exhaust passage 4 communicates with first exhaust passage 3;The interval between the bottom of second cavity 102 and mould core block 2 is arranged to form third exhaust passage 5, third exhaust passage 5 communicates with second exhaust passage 4, the bottom of installation cavity is provided with several first jacks 204 for installing thimble, mould core block 2 is correspondingly provided with second jacks 105 and communicates with first jacks 204, first jacks 204 and second jacks 105 all communicate with third exhaust passage 5, in the process of injection molding, along with raw material flowing into forming groove 101-1, gas is pushed into first exhaust passage 3, thereby being discharged outside mould core plate 1 through second exhaust passage 4 and third exhaust passage 5, gas can be discharged through the gap of first jacks 204 and second jacks 105.

[0019] Mould core block 2 bottom is equipped with at least one first fixed hole 203, the bottom of corresponding mould core plate 1 of single installation cavity is equipped with second fixed hole 104 and communicates with first fixed hole 203, screw is installed in second fixed hole 104 and is screwed with first fixed hole 203, in the embodiment, mould core block 2 is installed and fixed with mould core plate 1 by two first fixed holes 203.

[0020] Compared with the prior art, the forming mold core for the decoration piece has simple structure and ingenious layout, the channel for exhausting is arranged at the inner side position of the forming groove of the decoration piece, the gas in the cavity can be quickly exhausted outside the mold body, the phenomenon of product defect after mold injection is solved, and the defect of the injection product is effectively avoided.

[0021] It is obvious for those skilled in the art that the present application is not limited to the details of the foregoing exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the foregoing description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0022] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

Claims

1. A molding core for decorative parts, characterized in that: The utility model discloses a mould core plate, rectangular array has a plurality of installation cavities on the mould core plate, the installation cavity is elliptical structure, single installation cavity is fixed with mould core block, the installation cavity is from top to bottom first cavity, second cavity and third cavity, the length of first cavity, second cavity and third cavity decreases, the top of first cavity is equipped with the concave forming groove along its annular one -week direction, the side of mould core block is equipped with the step part near forming groove, the outside of forming groove is equipped with a plurality of concave structure's first inclined groove, and the first inclined groove is the through groove structure, and the bottom end surface of first inclined groove is the first inclined surface and the bottom of step part cooperation, the bottom end of step part is equipped with second inclined surface, and the interval between first inclined surface and second inclined surface forms first exhaust passage, and first exhaust passage communicates with forming groove, and first exhaust passage communicates with installation cavity.

2. A forming core for a trim piece according to claim 1, wherein: The outer side wall of mould core block in second cavity is the third inclined surface of inclined surface structure, and the interval between third inclined surface and the inner wall of second cavity forms second exhaust passage, and the width of second exhaust passage increases from top to bottom, and the top of second exhaust passage communicates with first exhaust passage, and the third exhaust passage is formed by the interval between second cavity bottom and mould core block, and the third exhaust passage communicates with second exhaust passage, and the bottom of installation cavity is equipped with a plurality of first insertion hole for installing thimble, and the second insertion hole corresponding with first insertion hole is equipped with mould core block, and first insertion hole and second insertion hole all communicate with third exhaust passage.

3. A forming core for a trim piece according to claim 2, wherein: The width of first exhaust passage is 0.005-0.006mm.

4. A forming core for a trim piece according to claim 3, wherein: The bottom of mould core block is equipped with at least one first fixed hole, and the bottom of corresponding mould core plate in single installation cavity is equipped with second fixed hole and first fixed hole, and the second fixed hole is installed with screw and is connected with first fixed hole threadedly.

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