CN215242660U

CN215242660U - Mold for injection molding of deep-cavity thin-wall plastic part and injection molding machine

Info

Publication number: CN215242660U
Application number: CN202121166795.5U
Authority: CN
Inventors: 朱晓忠; 王勇红
Original assignee: Ruian Nanjing Electric Ltd By Share Ltd
Current assignee: Ruian Nanjing Electric Ltd By Share Ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2021-12-21
Anticipated expiration: 2031-05-28

Abstract

The utility model provides a mould and an injection molding machine for injection molding of a deep cavity wall thin plastic part, wherein the mould comprises a fixed template, a fixed die core, a movable template, a movable die and a movable die core; the fixed die is installed on the fixed die plate, the fixed die core is installed in the fixed die, the movable die is installed on the movable die plate, the movable die core is installed in the movable die, and the fixed die core is provided with a pouring gate; the movable mold core and the fixed mold core form a cavity for injection molding of the plastic part with the deep cavity wall after mold closing; the surface of the movable mold core is provided with a first structure corresponding to the shape of the inner cavity of the deep-cavity thin-wall plastic part, and the surface of the fixed mold core is provided with a second structure corresponding to the shape of the outer wall of the deep-cavity thin-wall plastic part. The utility model provides a mould has cancelled the mold insert and directly processes the mold insert appearance in movable mould benevolence surface, improves the surface rigidity of movable mould benevolence, reduces the deformation condition after the product shaping, has improved the yields of product.

Description

Mold for injection molding of deep-cavity thin-wall plastic part and injection molding machine

Technical Field

The utility model belongs to the technical field of the filtration equipment accessory, concretely relates to mould and injection molding machine for moulding plastics deep cavity wall thin working of plastics.

Background

The product shown in fig. 1 belongs to a deep-cavity thin-wall plastic part, and has the overall structural characteristics of larger depth dimension, thinner wall thickness and arranged top surface. When the product is manufactured, the heated plastic particles have stress in the cavity, so that the movable mold insert on the movable mold core is easy to incline after long-term use, and the outer wall of the product is also easy to deform after injection molding and cooling.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the mold for injection molding of the plastic part with the deep cavity and the thin wall is provided, the insert is omitted, the appearance of the insert is directly processed on the surface of the movable mold core, the surface rigidity of the movable mold core is improved, the deformation condition of the product after molding is reduced, and the yield of the product is improved.

The utility model discloses a realize like this: a mould for injection molding of a deep-cavity thin-wall plastic part comprises a fixed template, a fixed mould core, a movable template, a movable mould and a movable mould core; the fixed die is installed on the fixed die plate, the fixed die core is installed in the fixed die, the movable die is installed on the movable die plate, the movable die core is installed in the movable die, and the fixed die core is provided with a pouring gate; the movable mold core and the fixed mold core form a cavity for injection molding of the plastic part with the deep cavity wall after mold closing; the surface of the movable mold core is provided with a first structure corresponding to the shape of the inner cavity of the deep-cavity thin-wall plastic part, and the surface of the fixed mold core is provided with a second structure corresponding to the shape of the outer wall of the deep-cavity thin-wall plastic part.

Further, the fixed mould kernel comprises a first fixed mould kernel and a second fixed mould kernel, a first substructure corresponding to one part of the outer side wall of the deep cavity wall thin plastic part is arranged on the surface of the first fixed mould kernel, a second substructure corresponding to the other outer side faces and the outer top face of the deep cavity wall thin plastic part is arranged on the surface of the second fixed mould kernel, and the first substructure and the second substructure constitute the first structure.

Further, the gate is disposed on the second core plate.

The first fixed die insert is arranged on the first fixed die core and driven by the cylinder; the inner end of the fixed die insert can be abutted to the movable die core.

Further, a die core pressing block is arranged in the movable die, and the die core pressing block fixes the movable die core in the movable die.

Further, the movable mould includes movable mould body and clamping ring, the clamping ring is installed on the movable mould body, mould benevolence briquetting is installed on the clamping ring, the top surface of mould benevolence briquetting and the top surface of clamping ring are located the coplanar.

The utility model also provides an injection molding machine, comprises a die, the mould is above-mentioned a mould that is used for moulding plastics deep cavity wall thin working of plastics.

The utility model discloses the beneficial effect who brings is:

1. the utility model provides a mould has cancelled the mold insert and directly processes the mold insert appearance in movable mould benevolence surface, improves the surface rigidity of movable mould benevolence, reduces the deformation condition after the product shaping, has improved the yields of product.

2. The utility model provides a cover half benevolence adopts two parts structure to mould the exterior structure of product to directly carry out the change of adaptability and can realize when needs change end structure, reduced the cost that the retooling was moulded plastics.

3. The utility model provides a cover half benevolence adopts cylinder and cover half mold insert to realize the shaping of lateral wall structure to satisfy the manufacturing requirement of the product of more structures.

Drawings

FIG. 1 is a perspective view of a deep cavity thin wall plastic part;

FIG. 2 is a perspective view of the mold of the present invention;

FIG. 3 is a front view of the structure of the mold shown in FIG. 2;

fig. 4 is a sectional view of the structure taken along the line a-a in fig. 3.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1 to 4, the utility model provides an injection molding machine for moulding plastics deep cavity wall thin working of plastics, including the mould, the mould includes fixed die plate 1, cover half 2, cover half mould benevolence, movable mould board 11, movable mould and movable mould benevolence 5. The fixed die 2 is arranged on the fixed die plate 1, the fixed die core is arranged in the fixed die 2, the movable die is arranged on the movable die plate 11, the movable die core 5 is arranged in the movable die, and the fixed die core is provided with the sprue 9. The movable mold core 5 and the fixed mold core form a mold cavity 100 for injection molding of a plastic part with a deep cavity and a thin wall after mold closing. The surface of the movable mould core 5 is provided with a first structure corresponding to the shape of the inner cavity of the deep-cavity-wall thin plastic piece, and the surface of the fixed mould core is provided with a second structure corresponding to the shape of the outer wall of the deep-cavity-wall thin plastic piece. After the original movable mold insert is cancelled, the structure of the movable mold insert is directly machined in the first structure, so that the surface rigidity of the movable mold insert is improved, the deformation condition of a product after molding is reduced, and the yield of the product is improved.

In an optional embodiment, the fixed mold core comprises a first fixed mold core 3 and a second fixed mold core 4, a first substructure corresponding to a part of the outer side wall of the deep cavity wall thin plastic part is arranged on the surface of the first fixed mold core 3, a second substructure corresponding to the rest outer side surface and the outer top surface of the deep cavity wall thin plastic part is arranged on the surface of the second fixed mold core 4, and the first substructure and the second substructure form a first structure. As can be seen from fig. 1, the outer top surface of the plastic part is not smooth but has a specific structure, so that for such products, different models or specifications have different outer top surface structures, and therefore, only the second stationary mold core 4 needs to be replaced when the injection molding type is replaced, the whole stationary mold core does not need to be replaced, and the mold replacement cost is greatly reduced.

In an alternative embodiment, the gate 9 is disposed on the second core plate 4.

In an optional embodiment, the die further comprises a cylinder 7 and a fixed die insert 6, wherein the cylinder 7 is mounted on the fixed die 2, and the fixed die insert 6 is mounted on the first fixed die core 3 and driven by the cylinder 7; the inner end of the fixed mould insert 6 can abut against the movable mould core 5. The fixed mold insert 6 is used for molding a hole-groove structure on the side wall surface of the plastic part and is drawn out by the cylinder 7 after mold opening, so that the plastic part is conveniently demoulded.

In an alternative embodiment, a core pressing block 10 is installed in the movable mold, and the core pressing block 10 fixes the movable mold core 5 in the movable mold.

In an alternative embodiment, the movable die comprises a movable die body 8 and a pressing ring 13, the pressing ring 13 is mounted on the movable die body 8 through a screw 12, the die core pressing block 10 is mounted on the pressing ring 13, and the top surface of the die core pressing block 10 and the top surface of the pressing ring 13 are located on the same plane.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for convenience of description and simplification of description, but not for indicating or implying that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the description of the present invention, "a plurality" means two or more unless otherwise specified. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A mould for injection molding of a deep-cavity thin-wall plastic part comprises a fixed mould plate (1), a fixed mould (2), a fixed mould core, a movable mould plate (11), a movable mould and a movable mould core (5); the fixed die (2) is arranged on the fixed die plate (1), the fixed die core is arranged in the fixed die (2), the movable die is arranged on the movable die plate (11), the movable die core (5) is arranged in the movable die, and the fixed die core is provided with a sprue (9); the movable mould core (5) and the fixed mould core form a mould cavity (100) for injection molding of the deep cavity wall thin plastic part after mould assembly; the movable mould core is characterized in that a first structure corresponding to the shape of the inner cavity of the deep-cavity thin-wall plastic part is arranged on the surface of the movable mould core (5), and a second structure corresponding to the shape of the outer wall of the deep-cavity thin-wall plastic part is arranged on the surface of the fixed mould core.

2. The mold according to claim 1, wherein the cavity insert comprises a first cavity insert (3) and a second cavity insert (4), a first substructure corresponding to a part of the outer sidewall of the deep cavity wall thin plastic part is disposed on the surface of the first cavity insert (3), a second substructure corresponding to the rest of the outer sidewall and the outer top surface of the deep cavity wall thin plastic part is disposed on the surface of the second cavity insert (4), and the first substructure and the second substructure constitute the first structure.

3. A mold according to claim 2, characterized in that the sprue (9) is arranged on the second core insert (4).

4. A mold for injection molding of plastic parts with a thin deep cavity wall according to claim 2, further comprising a cylinder (7) and a stationary mold insert (6), wherein the cylinder (7) is mounted on the stationary mold (2), and the stationary mold insert (6) is mounted on the first stationary mold core (3) and driven by the cylinder (7); the inner end of the fixed die insert (6) can be abutted against the movable die core (5).

5. A mold for injection molding of plastic parts with deep cavity and thin wall as claimed in claim 1, wherein a core pressing block (10) is installed in the movable mold, and the core pressing block (10) fixes the movable mold core (5) in the movable mold.

6. The mold according to claim 5, wherein the movable mold comprises a movable mold body (8) and a pressing ring (13), the pressing ring (13) is installed on the movable mold body (8), the mold core pressing block (10) is installed on the pressing ring (13), and the top surface of the mold core pressing block (10) and the top surface of the pressing ring (13) are located on the same plane.

7. An injection molding machine comprising a mold, wherein the mold is a mold according to claim 1 for injection molding deep-walled thin plastic parts.