CN212312623U

CN212312623U - Lampshade injection mold

Info

Publication number: CN212312623U
Application number: CN202020946560.7U
Authority: CN
Inventors: 余建兵; 余军兵; 张光明
Original assignee: Xiamen Yongjiajun Precision Mould Co ltd
Current assignee: Xiamen Yongjiajun Precision Mould Co ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2021-01-08
Anticipated expiration: 2030-05-29

Abstract

The utility model provides a lamp shade injection mold relates to casting die technical field. Wherein, a lamp shade injection mold, including cover half and movable mould, a plurality of die cavities have been seted up towards one side of movable mould to the cover half, the movable mould includes last bottom plate and last die sleeve, it is equipped with the mold core to go up the die sleeve inlays, set up a plurality of mounting grooves that communicate one by one with single die cavity when the compound die on the mold core, can dismantle in the mounting groove and be provided with the mold insert, the mold insert is kept away from the outstanding mold core of tip of last die sleeve and is towards the one side of cover half, when the compound die state, the mold cavity of pouring of lamp shade is constituteed jointly with the die cavity in the mold cavity to the mold insert stretches into, upward set up in the bottom plate and be used for supplying to pour the first. The utility model has the advantages of the machining precision is high, and the product outward appearance of pouring does not have the butt fusion seal and does not have the exhaust seal.

Description

Lampshade injection mold

Technical Field

The utility model relates to a pour mould technical field, particularly, relate to a lamp shade injection mold.

Background

An injection mold is a tool for producing plastic products; and is also a tool for giving the plastic product complete structure and accurate dimension. Injection molding is a process used to mass produce parts of some complex shapes. The injection mold for the lampshade is characterized in that plastic melted by heating is injected into a mold cavity from an injection molding machine at high pressure, and a lampshade forming product is obtained after cooling and solidification.

The outer surface of the existing lampshade is easy to lack glue, has exhaust flaws, welding marks and the like after injection molding, the appearance of a product is influenced, the reject ratio of the product is increased in a node mode, and the production cost of a production enterprise is greatly increased.

In view of the above, the inventor of the present application invented a lamp cover injection mold.

SUMMERY OF THE UTILITY MODEL

The utility model provides a lamp shade injection mold aims at improving the problem that the outward appearance has the flaw easily after current lamp shade injection moulding.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a lamp shade injection mold, includes cover half and movable mould, a plurality of die cavities have been seted up to one side of cover half orientation movable mould, the movable mould includes last bottom die plate and last die sleeve, go up the die core and inlay in the die sleeve, set up a plurality of mounting grooves that communicate one by one with single die cavity when the compound die on the die core, can dismantle in the mounting groove and be provided with the mold insert, the tip that the mold insert was kept away from last die sleeve is outstanding the one side of die core orientation cover half, when the compound die state, singly the mold insert stretches into single die cavity and constitutes the die cavity of pouring of single lamp shade jointly with single die cavity, set up in the bottom die plate and be used for pouring the first hot runner in the liquid inflow die core, be provided with the second hot runner with.

Furthermore, the second hot runner comprises an upper half runner and a lower half runner, the upper half runner is positioned on one side of the mold core facing the fixed mold, and the lower half runner is positioned on one side of the fixed mold facing the movable mold, so that one end of the second hot runner facing the pouring mold cavity is communicated with the inner side wall of the pouring mold cavity.

Furthermore, the number of the concave die cavities is four, and the four concave die cavities are distributed in a rectangular shape and are respectively positioned at four corners of the rectangular shape.

Furthermore, the number of the second hot runners is four, one ends of the four second hot runners are intersected at the outlet end of the first hot runner, and the extension lines of the other ends of the four second hot runners are intersected with the axis of the pouring mold cavity.

Further, all be provided with oily hot pipeline in mold core and the decide mould, oily hot pipeline is the rectangle and distributes, four pour the die cavity and be located the rectangle that oily hot pipeline encloses and laminate oily hot pipeline setting.

Furthermore, the cover half is located its four corners and is provided with four reference columns towards one side of movable mould, go up the mould cover and be provided with the constant head tank with reference column matched with towards one side of cover half.

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

(1) the mold insert is inserted in the mounting groove, so that the mold insert is convenient to replace, the service time of the whole mold core is prolonged, and a gap is reserved between the wire-cut mold insert and the inner wall of the mounting groove and can be used for exhausting, so that the appearance of a poured product is not easy to lack of glue, and no exhaust defect exists;

(2) the second hot runner is communicated with the inner side wall of the cavity die groove, so that in the pouring process, pouring liquid enters the cavity die groove from the side wall of the cavity die groove, no welding mark exists on the surface of the poured lampshade, and the whole product looks more attractive;

(3) through setting up oily hot line way for when pouring, the heat is more even in the mould, ensures pouring the mobility of liquid at the in-process of pouring, conveniently pours the liquid and fills up the shaping die cavity, makes the product outward appearance of pouring out beautiful, and difficult product has the bubble to shrink.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of a fixed mold separated from a movable mold;

FIG. 3 is a schematic structural view of a movable mold;

FIG. 4 is an exploded view of the moving mold;

FIG. 5 is a view of a cast product;

fig. 6 is a product diagram after casting molding.

Description of the main elements

1. Fixing a mold; 2. moving the mold; 21. an upper die base plate; 22. putting a die sleeve; 3. a cavity; 4. a first hot runner; 5. a second hot runner; 6. a positioning column; 7. positioning a groove; 8. a mold core; 9. mounting grooves; 10. an insert; 11. oil heat pipe.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1 to 3, the injection mold for the lampshade comprises a fixed mold 1 and a movable mold 2, wherein the movable mold 2 comprises an upper mold bottom plate 21 and an upper mold sleeve 22. Four cavity cavities 3 are arranged on one side, facing the movable die 2, of the fixed die 1, the four cavity cavities 3 are distributed on one side, facing the movable die 2, of the fixed die 1 in a square mode, and the four cavity cavities 3 are located at four corners of the square respectively. Therefore, four lamp shades can be produced when the mould is used for pouring once, the production efficiency of the mould is improved, the space of the mould is fully utilized, and the structural design is reasonable.

Set up in last mould bottom plate 21 and be used for supplying to pour first hot runner 4 in liquid inflow mold core 8, be provided with the second hot runner 5 with first hot runner 4 and die cavity 3 intercommunication between mold core 8 and cover half 1, the number of second hot runner 5 is four, the one end that four second hot runners 5 kept away from to pour the die cavity intersects in the exit end of first hot runner 4, second hot runner 5 intersects with the axis of pouring the die cavity towards the extension line of pouring die cavity one end, this structure makes when pouring liquid from second hot runner 5 entering die cavity 3, can be even flow in die cavity 3, make the lamp shade thickness of pouring more even.

Further, second hot runner 5 includes first runner and second runner, first runner is located mold core 8 towards one side of cover half 1, second runner is located cover half 1 towards one side of movable mould 2, so, second hot runner 5 just communicates with the inside wall in die cavity towards the one end in die cavity, make in pouring the in-process, pour the lateral wall entering die cavity of liquid from the die cavity, rather than in the top entering die cavity in die cavity, the lamp shade surface of pouring just does not have the welding seal, whole product looks more pleasing to the eye.

Four positioning columns 6 are arranged at four corners of the fixed die 1 on one side of the fixed die 1 facing the movable die 2, and positioning grooves 7 matched with the positioning columns 6 are arranged on one side of the upper die sleeve 22 facing the fixed die 1. The positioning column 6 and the positioning groove 7 are matched with each other, so that the die assembly between the movable die 2 and the fixed die 1 is facilitated, and the die assembly precision can be ensured.

As shown in fig. 3 and 4, a mold core 8 is embedded in the upper mold sleeve 22, a plurality of mounting grooves 9 which are communicated with the single cavity 3 one by one when the mold is closed are formed in the mold core 8, insert pieces 10 are inserted into the mounting grooves 9, and the insert pieces 10 are obtained by cutting through a slow wire-moving process. The end part of the insert 10 far away from the upper die sleeve 22 protrudes out of one surface of the die core facing the fixed die 1, when the die is closed, the single insert 10 extends into the single concave die cavity 3 to form a pouring die cavity of a single lampshade together with the single concave die cavity 3, and the insert 10 is positioned in the center of the concave die cavity 3.

Through this mode, when a certain mold insert 10 weares and teares, only need with the mold insert 10 of wearing and tearing change into new can, practiced thrift the cost of production, and change easy operation convenience, gapped between the inner wall of mold insert 10 and mounting groove 9 in addition, at the in-process of pouring, pour this clearance of gas accessible of die cavity and discharge for the product outward appearance of pouring out is difficult to the starved, and does not have the exhaust flaw.

Further, in order to make when pouring, the heat in the mould is more even, all is provided with oily hot pipeline 11 in mold core 8 and cover half 1, and oily hot pipeline 11 is the rectangle and distributes, and four die cavities of pouring are located the rectangle that oily hot pipeline 11 encloses and laminating oily hot pipeline 11 sets up. Therefore, the pouring liquid is heated more uniformly, the flowability of the pouring liquid is better, the pouring liquid is convenient to fill the molding die cavity, the appearance of a poured product is attractive, and the product is not easy to shrink due to bubbles.

The utility model discloses a working process and beneficial effect as follows:

when pouring, the movable mold 2 and the fixed mold 1 are closed, pouring liquid is poured into the inlet end of the first hot runner 4, the pouring liquid flows into the second hot runner 5 along the first hot runner 4 and then flows into the forming mold cavity along the second hot runner 5, the forming mold cavity is filled, the oil-heat pipeline 11 heats the pouring liquid in the filling process to ensure the fluidity of the pouring liquid, after the forming mold cavity is completely filled with the pouring liquid, the mold is cooled and then opened, and a product with the shape consistent with the forming mold cavity can be obtained.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The lampshade injection mold is characterized by comprising a fixed mold (1) and a movable mold (2), wherein a plurality of concave mold cavities (3) are formed in one side, facing the movable mold (2), of the fixed mold (1), the movable mold (2) comprises an upper mold base plate (21) and an upper mold sleeve (22), a mold core (8) is embedded in the upper mold sleeve (22), a plurality of mounting grooves (9) which are communicated with the single concave mold cavities (3) one by one during mold closing are formed in the mold core (8), an insert (10) is detachably arranged in each mounting groove (9), the end part, far away from the upper mold sleeve (22), of the insert (10) protrudes out of the end face, facing the fixed mold (1), of the mold core (8), when the mold closing state is achieved, the single insert (10) extends into the single concave mold cavity (3) to form a single casting mold cavity together with the single concave mold cavity (3), and a first hot runner (4) for pouring liquid to flow into the mold core (8) is arranged in, and a second hot runner (5) for communicating the first hot runner (4) with the cavity (3) is arranged in the mold core (8).

2. The lamp cover injection mold according to claim 1, wherein the second hot runner (5) comprises an upper half runner and a lower half runner, the upper half runner is located on one side of the mold core (8) facing the fixed mold (1), and the lower half runner is located on one side of the fixed mold (1) facing the movable mold (2), so that one end of the second hot runner (5) facing the pouring mold cavity is communicated with the inner side wall of the pouring mold cavity.

3. The injection mold for the lampshade as defined in claim 1, wherein the number of the cavity chambers (3) is four, and the four cavity chambers (3) are distributed in a rectangular shape and are respectively located at four corners of the rectangular shape.

4. A lampshade injection mould as defined in claim 3, characterized in that the number of the second hot runners (5) is four, one end of the four second hot runners (5) is intersected with the outlet end of the first hot runner (4), and the extension line of the other end is intersected with the axis of the casting mould cavity.

5. A lampshade injection mould according to claim 3, characterized in that the mould core (8) and the fixed mould (1) are both provided with oil heat pipelines (11), the oil heat pipelines (11) are distributed in a rectangular shape, and the four pouring mould cavities are positioned in the rectangle enclosed by the oil heat pipelines (11) and are arranged in a manner of being attached to the oil heat pipelines (11).

6. A lampshade injection mould as defined in claim 1, characterized in that the side of the fixed mould (1) facing the movable mould (2) at the four corners thereof is provided with four positioning columns (6), and the side of the upper mould sleeve (22) facing the fixed mould (1) is provided with positioning slots (7) matched with the positioning columns (6).