Anti-strain die applied to middle frame of display

Abstract

The utility model discloses an anti-strain mould applied to a middle frame of a display, which comprises an upper mould base and a lower mould base which are assembled up and down, the upper mould base is provided with a cavity, the lower mould base is provided with a core, the core is provided with a convex block, the convex block is provided with a first inclined surface, the cavity is provided with a concave position, the concave position is provided with a second inclined surface, the upper mould base and the lower mould base are assembled, and the convex block is matched with the concave position. An injection mold cavity is defined by the mold core and the mold cavity; thus, through the design of the protruding block and the concave position, limiting between the mold core and the mold cavity is facilitated, the phenomenon that a product is strained during mold opening is prevented, the forming quality of the product is improved, the yield of the product is improved, meanwhile, through the arrangement of the first inclined face and the second inclined face, mutual matching between the protruding block and the concave position is facilitated, the structural design is ingenious and reasonable, and practicability is high. The use requirements of users are met, the usability is good, and the application range is wide.

Description

TECHNICAL FIELD

[0001] The utility model relates to the mould field technology especially is the anti -injury mould for the display middle frame. BACKGROUND

[0002] At present, the mould is various moulds and tools for obtaining required products by methods such as injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and the like in industrial production, and the injection mold is the most important in the injection molding process;The injection mold is a tool for producing plastic products, and is also a tool for giving plastic products complete structure and accurate size, and injection molding is a processing method used when mass producing some complex-shaped parts, specifically referring to injecting molten plastic into a mold cavity by high pressure of an injection molding machine, and obtaining a shaped product after cooling and solidification.

[0003] With the development of science and technology, the present production process is increasingly mature, and the injection mold can provide power to the finished product by the oil cylinder at the bottom to eject the lower mold groove, thereby saving a large amount of ejection time;However, the existing injection mold structure design is poor, and the wear and tear between the upper mold and the lower mold is also very serious when the injection mold is used in a high-strength processing mode, resulting in the phenomenon of product injury when the mold is opened, thereby affecting the forming quality of the final product, the product has a high defective rate, cannot meet the user's use requirement, has poor usability, and has a small application range.

[0004] Therefore, it is necessary to research a new technical scheme to solve the above problems. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides an anti-injury mold for a display middle frame, which is beneficial to the limiting between the core and the cavity through the design of the protrusion and the recess, prevents the injury phenomenon of the product when the mold is opened and the forming quality of the product, improves the yield of the product, meets the use requirement of the user, has good usability, and has a wide application range.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] An anti-injury mold for a display middle frame, comprising an upper mold base and a lower mold base that are combined, a cavity is arranged at the lower end of the upper mold base, a core is arranged at the upper end of the lower mold base, a protrusion is arranged on the core, the protrusion is arranged at the edge of the core in a plurality of and interval manner, the inner wall surface of the protrusion is provided with a first inclined surface that extends obliquely upward from inside to outside, a recess matching the protrusion is arranged on the cavity, the inner wall of the recess is provided with a second inclined surface corresponding to the first inclined surface, the upper mold base and the lower mold base are combined, the protrusion and the recess are matched with each other, and the core and the cavity form an injection mold cavity.

[0008] As a preferred solution, the outer wall surface of the protrusion is exposed outside the recess, and a space is maintained between the outer wall of the protrusion and the inner wall of the injection mold cavity.

[0009] As a preferred solution, a first step surface is arranged on the outer wall of the protrusion away from the core.

[0010] As a preferred solution, a second step surface is arranged on the core, and the second step surface extends annularly along the edge of the core.

[0011] As a preferred solution, a protrusion is arranged on the outer side of the core, and the protrusion is arranged with a plurality of protrusions corresponding to the protrusions respectively, and the protrusion is arranged on the lower side of the protrusion.

[0012] As a preferred solution, a gating system is further included, the gating system includes a gating flow channel and a distribution channel communicating with the gating flow channel, the upper end of the gating flow channel penetrates the upper mold base, the distribution channel includes a main flow channel and a plurality of auxiliary flow channels, the main flow channel communicates with the gating flow channel, the auxiliary flow channels are arranged at intervals along the edge of the mold cavity, the lower end of the auxiliary flow channels penetrates the upper mold base to form a gating opening, the gating opening communicates with the mold cavity, and the auxiliary flow channels communicate with the main flow channel.

[0013] As a preferred solution, the auxiliary flow channels extend upward and downward, the lower end of the auxiliary flow channels is arranged to gradually decrease from top to bottom towards the gating opening, the main flow channel is arranged with at least two, the two main flow channels extend horizontally, and part of the auxiliary flow channels communicate with one of the main flow channels, and the other part of the auxiliary flow channels communicate with the other main flow channel.

[0014] Compared with the prior art, the utility model has obvious advantages and beneficial effects, specifically speaking, from the above technical scheme, it is mainly through the design of the protrusion and the recess, which is beneficial to the limiting between the core and the mold cavity, prevents the product from being damaged when the mold is opened, improves the forming quality of the product, improves the yield of the product, at the same time, the arrangement of the first inclined surface and the second inclined surface is beneficial to the mutual matching between the protrusion and the recess, the structure design is ingenious and reasonable, meets the use demand of the user, the usability is good, and the application range is wide.

[0015] In addition, the auxiliary flow channels are arranged at intervals around the mold cavity, which is beneficial to ensuring that the flow rate of the rubber material on the injection mold cavity is uniform, thereby improving the quality of the workpiece injection molding, meeting the use demand of the user, and having high practicability.

[0016] In order to more clearly illustrate the structural characteristics and effects of the utility model, the utility model will be described in detail below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1is a sectional view of the embodiment of the utility model;

[0018] Figure 2 is the partial enlarged schematic view between the upper die holder and the lower die holder of the embodiment of the utility model;

[0019] Figure 3 is the schematic view of the upper die holder of the embodiment of the utility model;

[0020] Figure 4 is the partial enlarged schematic view of the upper die holder of the embodiment of the utility model;

[0021] Figure 5 is the schematic view of the lower die holder of the embodiment of the utility model;

[0022] Figure 6 is the partial enlarged schematic view of the lower die holder of the embodiment of the utility model.

[0023] The figure mark explanation is as follows:

[0024] 10, upper die holder 11, cavity

[0025] 111, recess 112, second inclined surface

[0026] 12, pouring gate 13, injection mold cavity

[0027] 20, lower die holder 21, core

[0028] 211, protruding block 212, first inclined surface

[0029] 213, first step surface 214, second step surface

[0030] 215, protrusion. Specific implementation

[0031] Please refer to Figures 1 to 6 It shows the specific structure of the embodiment of the utility model.

[0032] A kind of be applied to display middle frame's anti-pulling injury mould, including upper and lower die of upper die holder 10, lower die holder 20, the lower end of the upper die holder 10 is provided with cavity 11, the upper end of the lower die holder 20 is provided with core 21, the core 21 is provided with protruding block 211, the protruding block 211 is provided with several and interval type is arranged in the edge of core 21, the inner wall surface of the protruding block 211 has first inclined surface 212, which is arranged in the form of inclined upward from inside to outside, the cavity 11 is provided with recess 111 matching protruding block, the inner wall of the recess 111 is provided with second inclined surface 112 corresponding to first inclined surface, the upper die holder 10 and lower die holder 20 are closed, the protruding block 211 and recess 111 are matched with each other, the core 21 and cavity 11 are surrounded and are formed with injection mold cavity 13.

[0033] Specifically, the outer wall surface of the protrusion 211 is exposed outside the recess 111, and a spacing is maintained between the outer wall of the protrusion 211 and the inner wall of the injection mold cavity 13. In this way, through the design of the protrusion and the recess, the positioning between the core and the cavity is facilitated, the product is prevented from being damaged when the mold is opened, the forming quality of the product is improved, the yield of the product is improved, the first inclined surface and the second inclined surface are arranged to facilitate the matching between the protrusion and the recess, the structure is designed ingeniously and reasonably, the use requirement of the user is met, the usability is good, and the application range is wide.

[0034] In addition, the first step surface 213 is arranged on the outer wall of the protrusion 211 away from the core, and the second step surface 214 is arranged on the core 21 and extends annularly along the edge of the core 21. The protrusion 215 is arranged on the outer side of the core 21, and a plurality of protrusions 215 are arranged correspondingly. The protrusion 215 is located below the protrusion 211. In this way, the first step surface and the second step surface are arranged to facilitate the forming of the step of the workpiece during injection molding, facilitate the assembly process of the subsequent workpiece, and reduce the material used during injection molding of the workpiece. In addition, the arrangement of the protrusion improves the structural strength of the protrusion on the core and ensures the stability of the contact between the protrusion and the recess.

[0035] The injection system comprises a pouring flow channel (not shown in the figure) and a distribution channel (not shown in the figure) connected to the pouring flow channel. The upper end of the pouring flow channel penetrates the upper mold seat 10. The distribution channel comprises a main flow channel and a plurality of sub-flow channels arranged at intervals along the edge of the cavity. The lower end of the sub-flow channel penetrates the upper mold seat to form a pouring port 12. The pouring port 12 is connected to the cavity 11, and the plurality of sub-flow channels are connected to the main flow channel.

[0036] Specifically, the sub-flow channel is arranged in an up-down extending manner. The lower end of the sub-flow channel is arranged in a gradually decreasing manner from top to bottom towards the pouring port 12. The main flow channel is arranged in at least two, and the two main flow channels are arranged in a horizontal extending manner. A part of the sub-flow channels are connected to one of the main flow channels, and the other part of the sub-flow channels are connected to the other main flow channel. Preferably, the sub-flow channel and the pouring port 12 are each arranged with eight. In this way, the plurality of sub-flow channels are arranged at intervals around the cavity, which facilitates to ensure the uniform flow rate of the rubber on the injection mold cavity, thereby improving the quality of the workpiece injection molding, meeting the use requirement of the user, and having high practicability.

[0037] The utility model discloses a design emphasis lies in, it is mainly through the design of convex block and recess position, be favorable to the location between core and cavity, prevent the product from appearing to pull the injury phenomenon and the forming quality of product when opening mould, improved the yield of product, at the same time, the setting of first inclined plane and second inclined plane, be favorable to the mutual matching between convex block and recess position, structural design is ingenious and reasonable, satisfy the use demand of user, and the usability is good, and the scope of application is wide.

[0038] And, the several vice flow channels are arranged around the cavity spacing, which is favorable to ensuring the uniform flow rate of the rubber on the injection mold cavity, thereby improving the quality of the workpiece injection molding, satisfying the use demand of the user, and being high in practicality.

[0039] The above is only the preferred embodiment of the utility model, and does not limit the technical range of the utility model in any way, so any slight modification, equivalent change and modification made according to the technical essence of the utility model to the above embodiment still belong to the range of the technical scheme of the utility model.

Claims

1. A scratch prevention mold applied to a middle frame of a display, characterized in that: The application relates to a mold, which comprises an upper mold base and a lower mold base, wherein the lower end of the upper mold base is provided with a cavity, the upper end of the lower mold base is provided with a core, the core is provided with a protrusion, the protrusion is arranged at the edge of the core in a spaced manner, the inner wall of the protrusion is provided with a first inclined surface extending upwards from the inside to the outside, the cavity is provided with a recess matching the protrusion, the inner wall of the recess is provided with a second inclined surface corresponding to the first inclined surface, the upper mold base and the lower mold base are combined, the protrusion and the recess are matched with each other, and the core and the cavity form an injection mold cavity.

2. The anti-scratching mold for a middle frame of a display according to claim 1, wherein: The outer wall of the protrusion is exposed to the outside of the recess, and a space is kept between the outer wall of the protrusion and the inner wall of the injection mold cavity.

3. The anti-scratching mold for a middle frame of a display according to claim 1, wherein: The outer wall of the protrusion away from the core is provided with a first step surface.

4. The anti-scratching mold for a middle frame of a display according to claim 1, wherein: The core is provided with a second step surface, and the second step surface extends along the edge of the core in a ring shape.

5. The anti-scratching mold for a middle frame of a display according to claim 1, wherein: The outer side of the core is provided with a protrusion, the protrusion is provided with a plurality of protrusions corresponding to the plurality of protrusions respectively, and the protrusion is located at the lower side of the protrusion.

6. The anti-scratching mold for a middle frame of a display according to claim 1, wherein: The mold further comprises a gating system, the gating system comprises a gating flow channel and a branch flow channel communicating with the gating flow channel, the upper end of the gating flow channel penetrates through the upper mold base, the branch flow channel comprises a main flow channel and a sub-flow channel, the main flow channel communicates with the gating flow channel, the sub-flow channel is provided with a plurality of sub-flow channels arranged in a spaced manner along the edge of the cavity, the lower end of the sub-flow channel penetrates through the upper mold base to form a pouring gate, the pouring gate communicates with the cavity, and the plurality of sub-flow channels communicate with the main flow channel.

7. The anti-scratching mold for a display middle frame according to claim 6, wherein: The sub-flow channel extends upwards and downwards, the lower end of the sub-flow channel gradually decreases from the top to the bottom towards the pouring gate, the main flow channel is provided with at least two main flow channels, the two main flow channels horizontally extend, a part of the sub-flow channels communicate with one of the main flow channels, and the other part of the sub-flow channels communicate with the other main flow channel.

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