CN219563964U - Display casing injection mold - Google Patents

Abstract

The utility model discloses an injection mold for a display shell, which comprises a fixed mold, wherein a fixed mold bottom plate is fixed at the upper end of the fixed mold, a movable mold with a corresponding position is arranged at the lower part of the fixed mold, the lower end of the movable mold is fixedly connected with the movable mold bottom plate, a fixed mold cavity and a movable mold cavity are respectively arranged at one side of the fixed mold and one side of the movable mold, a plastic fluid storage cavity is arranged in the fixed mold, and at least three second injection molding openings are arranged between the plastic fluid storage cavity and the fixed mold cavity. According to the utility model, the fixed die cavity, the movable die cavity, the plastic fluid storage cavity, the first injection molding opening and the second injection molding opening are arranged, plastic fluid enters the plastic fluid storage cavity through the first injection molding opening, enters the fixed die cavity and the movable die cavity through a plurality of groups of second injection molding openings after passing through the plastic fluid storage cavity, and the plurality of groups of second injection molding openings are distributed at different positions of the fixed die cavity, so that the plastic fluid flows and is distributed in the fixed die cavity and the movable die cavity more uniformly, and the ultra-thin high-precision requirement of the display is realized.

Description

Display casing injection mold

Technical Field

The utility model relates to the technical field of injection molds, in particular to an injection mold for a display shell.

Background

With the rapid development of flat panel display technology, liquid crystal displays are widely used in various information and communication products such as televisions and computers, and become an indispensable consumer product in modern life due to the advantages of small size, light weight, high image quality, low driving voltage and the like. Therefore, people further put forward higher requirements on the aspects of the overall quality, visual effect and the like of the liquid crystal display, and the liquid crystal display has attractive appearance, light weight, ultra-thin durability and gradually becomes a selection index of the liquid crystal display.

In the prior art, an injection molding process extrudes a material into an injection mold through a gate by an extrusion device to obtain a preset molded part. The display injection molding belongs to thin-wall injection molding, and the thin-wall injection molding requires extremely high injection speed to fill up a mold cavity, so that materials are uniformly distributed in an injection mold, but the injection speed is too high, air in the mold cavity can not be discharged, and air bubbles are trapped in the mold.

Disclosure of Invention

The utility model aims to provide an injection mold for a display shell, which aims to solve the problems that in the prior art, thin-wall injection requires extremely high injection speed to fill a mold cavity, so that materials are uniformly distributed in the injection mold, but the injection speed is too high, air in the mold cavity can not be discharged, and air bubbles are trapped in the mold.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a display casing injection mold, includes the cover half, the cover half upper end is fixed with the cover half bottom plate, and the cover half lower part is provided with the corresponding movable mould of position, movable mould lower extreme fixedly connected with movable mould bottom plate, fixed die chamber and movable mould chamber have been seted up respectively to cover half and movable mould one side, the inside plastics fluid storage chamber of having seted up of cover half, be no less than three second mouth of moulding plastics has been seted up between plastics fluid storage chamber and the cover half chamber, first mouth of moulding plastics has been seted up in cover half and the cover half bottom plate.

Preferably, a locating ring is arranged at the center of the fixed die bottom plate.

Preferably, the second injection molding port is funnel-shaped.

Preferably, the middle parts of two sides of the fixed die and the movable die are respectively fixed with a water inlet pipe and a water outlet pipe, two collecting pipes surrounding the movable die cavity and the plastic fluid storage cavity are fixed in the fixed die, a plurality of shunt pipes are communicated between the collecting pipes, and the fixed die and the movable die are respectively communicated with the shunt pipes at two ends.

Preferably, the surface of the first injection molding opening is fixedly provided with a sprue bush, and the first injection molding opening is connected with the plastic fluid storage cavity and the positioning ring.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model is provided with the fixed die cavity, the movable die cavity, the plastic fluid storage cavity, the first injection molding opening and the second injection molding opening, plastic fluid enters the plastic fluid storage cavity through the first injection molding opening, enters the fixed die cavity and the movable die cavity through a plurality of groups of second injection molding openings after passing through the plastic fluid storage cavity, and the plurality of groups of second injection molding openings are distributed at different positions of the fixed die cavity, so that the plastic fluid flows and is distributed in the fixed die cavity and the movable die cavity more uniformly, and the ultra-thin high-precision requirement of the display is realized.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of a water pipe installation of the present utility model;

fig. 3 is an enlarged schematic view of the portion a of the present utility model.

In the figure: 1. a fixed mold; 2. a fixed die bottom plate; 3. a movable mold; 4. a movable mold bottom plate; 5. a die cavity is fixed; 6. a moving mold cavity; 7. a plastic fluid storage cavity; 8. a first injection port; 9. a sprue bush; 10. a positioning ring; 11. a water inlet pipe; 12. a manifold; 13. a shunt; 14. a water outlet pipe; 15. and a second injection molding port.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, in an embodiment of the present utility model, an injection mold for a display housing includes a fixed mold 1, a fixed mold bottom plate 2 is fixed at an upper end of the fixed mold 1, a movable mold 3 corresponding to the fixed mold 1 is disposed at a lower portion of the fixed mold 1, a movable mold bottom plate 4 is fixedly connected at a lower end of the movable mold 3, the fixed mold 1 and the movable mold 3 are used as a main structure of the injection mold, the movable mold 3 is pushed to move to be attached to the fixed mold 1, a working place is provided for injection molding of the display housing, a fixed mold cavity 5 and a movable mold cavity 6 are respectively disposed at one side of the fixed mold 1 and the movable mold 3, and the fixed mold cavity 5 and the movable mold cavity 6 are disposed correspondingly; the fixed die cavity 5 and the movable die cavity 6 are used as workplaces for cooling and forming plastic fluid, a plastic fluid storage cavity 7 is formed in the fixed die 1, the plastic fluid storage cavity 7 is used as a transition cavity for plastic fluid circulation, at least three second injection molding openings 15 are formed between the plastic fluid storage cavity 7 and the fixed die cavity 5, first injection molding openings 8 are formed in the fixed die 1 and the fixed die bottom plate 2, plastic fluid enters the plastic fluid storage cavity 7 through the first injection molding openings 8, and after the plastic fluid fills the plastic fluid storage cavity 7, the plastic fluid enters the fixed die cavity 5 and the movable die cavity 6 through a plurality of groups of second injection molding openings 15;

referring to fig. 1, a positioning ring 10 is arranged at the center of a fixed mold bottom plate 2, the positioning ring 10 is used for mounting a feeding assembly, a sprue bush 9 is fixed on the surface of a first injection molding opening 8, the sprue bush 9 prevents plastic fluid from leaking, and the first injection molding opening 8 is connected with a plastic fluid storage cavity 7 and the positioning ring 10;

referring to fig. 3, the second injection molding opening 15 is funnel-shaped, and the funnel-shaped second injection molding opening 15 is arranged to avoid the excessive resistance of the plastic fluid received by the second injection molding opening 15 with smaller caliber, so that the ripple is formed at the corresponding position of the second injection molding opening 15 in the stage of completing injection molding of the plastic fluid, and the integral precision of the display housing molding is affected by the ripple;

referring to fig. 2, a water inlet pipe 11 and a water outlet pipe 14 are respectively fixed at the middle parts of two sides of the fixed mold 1 and the movable mold 3, two collecting pipes 12 surrounding the movable mold cavity 6 and the plastic fluid storage cavity 7 are fixed in the fixed mold 1, a plurality of shunt pipes 13 are communicated between the collecting pipes 12, the fixed mold 1 and the movable mold 3 are respectively communicated with the shunt pipes 13 positioned at two ends, condensed water is introduced into the shunt pipes 13 through the water inlet pipe 11 and then is collected to the collecting pipes 12, and then flows into the plurality of shunt pipes 13 through the collecting pipes 12 to cool and shape the display shell model.

The working principle and the using flow of the utility model are as follows: the feeding assembly is arranged on the positioning ring 10, the driving assembly is started to push the movable die 3 to move to be attached to the fixed die 1, plastic fluid enters the plastic fluid storage cavity 7 through the first injection molding opening 8, plastic fluid fills the plastic fluid storage cavity 7 and then enters the fixed die cavity 5 and the movable die cavity 6 through the plurality of groups of second injection molding openings 15, the arrangement of the plastic fluid storage cavity 7 serves as a transition cavity of the plastic fluid, the plastic fluid enters the fixed die cavity 5 and the movable die cavity 6 through the plurality of groups of second injection molding openings 15 after passing through the plastic fluid storage cavity 7, the plastic fluid flows and distributes more uniformly in the fixed die cavity 5 and the movable die cavity 6, the ultra-thin high-precision requirement of the display is met, the funnel-shaped arrangement of the second injection molding openings 15 prevents the plastic fluid from being excessively large in resistance, and then forms ripples at the corresponding positions of the second injection molding openings 15 in the injection molding stage of the plastic fluid, the ripples cause the integral precision of the display shell forming piece to be influenced, meanwhile, the condensed water is introduced into the flow tube 13 through the flow distribution tube 11 and then flows into the flow collection tube 12, and flows into the plurality of shunt tubes 13 to cool the display shell 13, finally the display shell is cooled, and the movable die 3 is driven to be far away from the fixed die 1, and the fixed die is finished.

Finally, it should be noted that: the above is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that the present utility model is described in detail with reference to the foregoing embodiments, and modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (5)

1. The utility model provides a display casing injection mold, includes cover half (1), its characterized in that: fixed die bottom plate (2) are fixed with in cover half (1) upper end, and cover half (1) lower part is provided with movable mould (3) that the position is corresponding, movable mould (3) lower extreme fixedly connected with movable mould bottom plate (4), fixed die cavity (5) and movable die cavity (6) have been seted up respectively to cover half (1) and movable mould (3) one side, plastic fluid storage chamber (7) have been seted up to cover half (1) inside, plastic fluid storage chamber (7) have seted up between cover half cavity (5) and are no less than three second mouth (15) of moulding plastics, first mouth (8) of moulding plastics have been seted up in cover half (1) and cover half bottom plate (2).

2. The display housing injection mold of claim 1, wherein: and a positioning ring (10) is arranged at the center of the fixed die bottom plate (2).

3. The display housing injection mold of claim 1, wherein: the second injection molding opening (15) is funnel-shaped.

4. The display housing injection mold of claim 1, wherein: the novel plastic fluid storage device is characterized in that a water inlet pipe (11) and a water outlet pipe (14) are respectively fixed in the middle of two sides of the fixed die (1) and the middle of two sides of the movable die (3), two collecting pipes (12) surrounding the movable die cavity (6) and the plastic fluid storage cavity (7) are fixed in the fixed die (1), a plurality of shunt pipes (13) are communicated between the collecting pipes (12), and the fixed die (1) and the movable die (3) are respectively communicated with the shunt pipes (13) at two ends.

5. The display housing injection mold of claim 2, wherein: the surface of the first injection molding opening (8) is fixedly provided with a sprue bush (9), and the first injection molding opening (8) is connected with the plastic fluid storage cavity (7) and the positioning ring (10).