CN223750124U

CN223750124U - Be applied to anti-strain mould of display center

Info

Publication number: CN223750124U
Application number: CN202423067292.9U
Authority: CN
Inventors: 徐文超
Original assignee: Dongguan Shengxinpin Industrial Co ltd
Current assignee: Dongguan Shengxinpin Industrial Co ltd
Priority date: 2024-12-11
Filing date: 2024-12-11
Publication date: 2026-01-02
Anticipated expiration: 2034-12-11

Abstract

This utility model discloses an anti-tear mold for the middle frame of a display, including an upper mold base and a lower mold base for upper and lower mold closing. The upper mold base has a cavity, and the lower mold base has a core. The core has a protrusion with a first inclined surface. The cavity has a recess with a second inclined surface. When the upper mold base and the lower mold base are closed, the protrusion and the recess match each other, and the core and cavity form an injection mold cavity. In this way, the design of the protrusion and the recess helps to limit the movement between the core and the cavity, preventing tearing during mold opening and improving the molding quality of the product, thus increasing the yield rate. At the same time, the setting of the first and second inclined surfaces facilitates the matching between the protrusion and the recess. The structural design is ingenious and reasonable, meets the user's needs, has good usability, and a wide range of applications.

Description

Be applied to anti-strain mould of display center

Technical Field

The utility model relates to the technical field of dies, in particular to an anti-strain die applied to a display middle frame.

Background

At present, the mould is various moulds and tools used for injection molding, blow molding, extrusion, die casting or forging, smelting, stamping and other methods to obtain required products in industrial production, the injection mould is the most important in the injection molding process, the injection mould is a tool for producing plastic products and also a tool for endowing the plastic products with complete structures and precise dimensions, the injection molding is a processing method used for mass production of parts with complex shapes, and particularly, the injection molding machine is used for injecting heated and melted plastics into a mould cavity under high pressure, and cooling and solidifying the plastics to obtain the formed products.

Along with the development of technology, the current production process tends to be mature increasingly, the injection mold can eject a finished product out of a lower mold groove by providing power through an oil cylinder at the bottom, so that a large amount of mold unloading time is saved, but the existing injection mold is poor in structural design, when the injection mold is used in a high-strength processing mode, the abrasion and strain between an upper mold and a lower mold are serious, the phenomenon of strain of the product is caused when the mold is opened, the molding quality of a final finished product is further influenced, the reject ratio of the product is high, the use requirement of a user cannot be met, the usability is poor, and the application range is small.

Therefore, a new technical solution is needed to solve the above problems.

Disclosure of utility model

In view of the above, the present utility model aims at overcoming the drawbacks of the prior art, and its main objective is to provide a strain-preventing mold for a display middle frame, which is beneficial to limit between a mold core and a mold cavity by designing a convex block and a concave position, prevents strain phenomenon and molding quality of a product during mold opening, improves yield of the product, meets use requirements of users, and has good usability and wide application range.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

The utility model provides a prevent strain mould for display center, includes upper die base, the die holder of upper and lower compound die, the lower extreme of upper die base is provided with the die cavity, the upper end of die holder is provided with the core, be provided with the lug on the core, the lug is provided with a plurality of and interval formula and arranges in the edge of core, the internal face of lug has the first inclined plane that extends the setting from inside to outside slant, be provided with the concave position that matches the lug on the die cavity, the inner wall of concave position corresponds first inclined plane and is provided with the second inclined plane, upper die base and die holder compound die, lug and concave phase mutually support, core and die cavity enclose the configuration and are formed with the injection moulding die cavity.

As a preferable scheme, the outer wall surface of the lug is exposed to the outer side of the concave position, and a space is kept between the outer wall of the lug and the inner wall of the injection molding cavity.

Preferably, a first step surface is provided on the outer wall of the projection facing away from the core.

As a preferred embodiment, the core is provided with a second stepped surface, which extends annularly along the edge of the core.

As a preferable scheme, the outside of core is provided with the arch, protruding be provided with a plurality of and correspond a plurality of lugs and set up respectively, protruding be located the downside of lug.

As a preferred scheme, still include the gating system, the gating system is including pouring runner and the reposition of redundant personnel way of intercommunication pouring runner, the upper end of pouring runner runs through the upper die base, the reposition of redundant personnel is including sprue and auxiliary runner, the sprue communicates in the pouring runner, the auxiliary runner is provided with a plurality of and arranges along the marginal interval of die cavity, the lower extreme of auxiliary runner link up the upper die base and is formed with the pouring gate, the pouring gate communicates in the die cavity, and a plurality of auxiliary runners all communicate in the sprue.

As a preferable scheme, the auxiliary flow channels are arranged in an extending mode from top to bottom, the lower ends of the auxiliary flow channels are arranged towards the pouring opening in a gradually decreasing mode from top to bottom, at least two main flow channels are arranged, the two main flow channels are arranged in a horizontally extending mode, one part of the auxiliary flow channels are communicated with one main flow channel, and the other part of the auxiliary flow channels are communicated with the other main flow channel.

Compared with the prior art, the utility model has obvious advantages and beneficial effects, in particular, the technical proposal is that the limit between the mold core and the mold cavity is facilitated by the design of the convex blocks and the concave positions, the phenomena of strain and the molding quality of the product are prevented when the mold is opened, the yield of the product is improved, and meanwhile, the arrangement of the first inclined plane and the second inclined plane is favorable for mutual matching between the convex blocks and the concave positions, the structural design is ingenious and reasonable, the use requirement of users is met, the usability is good, and the application range is wide;

And a plurality of auxiliary flow passages are arranged around the space between the cavities, so that the uniform flow velocity of the sizing material on the injection molding cavity is ensured, the quality of workpiece injection molding is improved, the use requirement of a user is met, and the practicability is high.

In order to more clearly illustrate the structural features and efficacy of the present utility model, the present utility model will be described in detail below with reference to the accompanying drawings and examples.

Drawings

FIG. 1 is a cross-sectional view of an embodiment of the present utility model;

FIG. 2 is an enlarged view of a portion of an upper die holder and a lower die holder according to an embodiment of the present utility model;

FIG. 3 is a schematic view of an upper die holder according to an embodiment of the utility model;

FIG. 4 is an enlarged view of a portion of an upper die holder according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a lower die holder according to an embodiment of the utility model;

FIG. 6 is an enlarged view of a portion of a lower die holder according to an embodiment of the utility model.

The attached drawings are used for identifying and describing:

10. Upper die holder 11, die cavity

111. Concave position 112, second inclined plane

12. Sprue gate 13, injection mold cavity

20. Lower die holder 21 and core

211. Bump 212, first inclined plane

213. First step surface 214, second step surface

215. A protrusion.

Detailed Description

Referring to fig. 1 to 6, specific structures of embodiments of the present utility model are shown.

The utility model provides a prevent strain mould for display center, includes upper die base 10, die holder 20 that upper and lower compound die, the lower extreme of upper die base 10 is provided with die cavity 11, the upper end of die holder 20 is provided with core 21, be provided with lug 211 on the core 21, lug 211 is provided with a plurality of and is arranged in the edge of core 21 at the interval, the internal wall surface of lug 211 has the first inclined plane 212 that extends to set up from inside to outside slant, be provided with the concave position 111 of matching lug on the die cavity 11, the inner wall of concave position 111 corresponds first inclined plane and is provided with second inclined plane 112, upper die base 10 and die holder 20 compound die, lug 211 and concave position 111 mutually match, core 21 and die cavity 11 enclose the configuration and are formed to have injection molding die cavity 13;

Specifically, the outer wall surface of lug 211 exposes in the outside of concave position 111, keep the interval between the outer wall of lug 211 and the inner wall of injection molding die cavity 13, so, through the design at lug and concave position, be favorable to spacing between core and the die cavity, prevent that the product from appearing the stretch-break phenomenon and the shaping quality of product when the die sinking, improved the yields of product, simultaneously, the setting of first inclined plane and second inclined plane is favorable to matching each other between lug and the concave position, structural design is ingenious reasonable, satisfies user's user demand, the usability is good, application scope is wide.

In addition, the outer wall of the lug 211 far away from the core is provided with a first step surface 213, the core 21 is provided with a second step surface 214, the second step surface 214 extends along the edge of the core 21 in an annular mode, the outer side of the core 21 is provided with a protrusion 215, the protrusion 215 is provided with a plurality of protrusions 211 which are respectively corresponding to the protrusions 211, the protrusion 215 is located at the lower side of the protrusion 211, and the first step surface and the second step surface are arranged so that workpieces are subjected to injection molding to form steps, assembly procedures of subsequent workpieces are facilitated, materials used for injection molding of the workpieces can be reduced, meanwhile, due to the protrusion, the structural strength of the protrusion on the core is improved, and contact stability between the protrusion and a concave position is guaranteed.

The pouring system comprises a pouring runner (not shown in the figure) and a diversion runner (not shown in the figure) communicated with the pouring runner, the upper end of the pouring runner penetrates through the upper die holder 10, the diversion runner comprises a main runner and auxiliary runners, the main runner is communicated with the pouring runner, the auxiliary runners are provided with a plurality of auxiliary runners and are arranged at intervals along the edge of the die cavity, the lower end of each auxiliary runner penetrates through the upper die holder to form a pouring opening 12, the pouring opening 12 is communicated with the die cavity 11, and the auxiliary runners are all communicated with the main runner;

Specifically, the auxiliary flow channel extends the setting from top to bottom, the lower extreme of auxiliary flow channel is towards pouring gate 12 from last decreasingly setting down, the sprue is provided with two at least, and two sprue are the horizontal extension setting, and a part auxiliary flow channel communicates in one of them sprue, and another part auxiliary flow channel communicates in another sprue, preferably, auxiliary flow channel and pouring gate 12 all are provided with eight, so, a plurality of auxiliary flow channels arrange around the die cavity interval, are favorable to guaranteeing that the velocity of flow of sizing material on the injection molding die cavity is even to improved work piece injection molding's quality, satisfied user's user demand, the practicality is strong.

The design key point of the utility model is that the design of the convex block and the concave position is mainly adopted, the limit between the mold core and the mold cavity is facilitated, the phenomena of strain and the molding quality of the product are prevented when the mold is opened, the yield of the product is improved, meanwhile, the arrangement of the first inclined plane and the second inclined plane is favorable for the mutual matching between the convex block and the concave position, the structural design is ingenious and reasonable, the use requirement of a user is met, the usability is good, and the application range is wide;

The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the technical scope of the present utility model, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present utility model are still within the scope of the technical solutions of the present utility model.

Claims

1. A tear-resistant mold for a display frame, characterized in that: it includes an upper mold base and a lower mold base for mold closing; 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 protrusions; a plurality of protrusions are arranged at intervals along the edge of the core; the inner wall of the protrusions has a first inclined surface extending obliquely upward from the inside out; the cavity is provided with a recess matching the protrusions; 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 closed; the protrusions and the recesses match each other; and the core and the cavity form an injection mold cavity.

2. The anti-tear mold for a display frame according to claim 1, characterized in that: the outer wall surface of the protrusion is exposed on the outside of the recess, and a gap is maintained between the outer wall of the protrusion and the inner wall of the injection mold cavity.

3. The anti-tear mold for a display frame according to claim 1, characterized in that: a first stepped surface is provided on the outer wall of the protrusion away from the core.

4. The anti-tear mold for a display frame according to claim 1, characterized in that: a second stepped surface is provided on the core, and the second stepped surface extends circumferentially along the edge of the core.

5. A tear-resistant mold for a display frame according to claim 1, characterized in that: a protrusion is provided on the outer side of the core, the protrusion is provided with a plurality of protrusions and respectively corresponding to a plurality of protrusions, and the protrusion is located on the lower side of the protrusion.

6. A tear-resistant mold for a display frame according to claim 1, characterized in that: it further includes a gating system, the gating system including a gating channel and a branch channel connecting the gating channel, the upper end of the gating channel penetrating the upper mold base, the branch channel including a main channel and a secondary channel, the main channel connecting to the gating channel, the secondary channels being provided in a plurality of manner and arranged at intervals along the edge of the cavity, the lower end of the secondary channels penetrating the upper mold base to form a sprue, the sprue connecting to the cavity, and the plurality of secondary channels all connecting to the main channel.

7. A tear-resistant mold for a display frame according to claim 6, characterized in that: the secondary runner extends vertically, the lower end of the secondary runner gradually decreases in size from top to bottom towards the pouring gate, and at least two main runners are provided, the two main runners extend horizontally, a portion of the secondary runners are connected to one of the main runners, and another portion of the secondary runners are connected to the other main runner.