CN219294604U - Soft and hard glue injection molding structure - Google Patents

Abstract

The utility model discloses a soft and hard rubber injection molding structure, which comprises a lower die holder for positioning a first hard rubber piece, an upper die holder for positioning a second hard rubber piece, a plurality of ejector pins arranged in the lower die holder and used for ejecting the first hard rubber piece, and upper inserts arranged in the upper die holder and movably propped against two sides of the first hard rubber piece; and the upper die holder and the lower die holder are matched to form a die cavity for forming the soft rubber piece along the periphery Xiang Lianjie of the second hard rubber piece. The utility model realizes that the injection molding piece adopts a mode of combining soft rubber and hard rubber, the appearance surface of the injection molding piece is better in molding, and the injection molding piece is easy to demould.

Description

Soft and hard glue injection molding structure

Technical Field

The utility model belongs to the technical field of molds, and particularly relates to a soft and hard plastic injection molding structure.

Background

The function button designs the injection molding according to the user demand on the car, and conventional injection molding adopts the hard rubber shaping, because consider the travelling comfort of button, the design injection molding can be constituteed by soft rubber and hard rubber for the button of moulding plastics has elastic resilience effect, still needs to consider the waterproof nature of the button of moulding plastics. Therefore, there is a need for a mold structure for a newly designed injection button that matches it.

Disclosure of Invention

The utility model aims to solve the technical problems and provide the soft and hard glue injection molding structure, so that the injection molding part adopts a soft glue and hard glue combined mode, the surface molding of the appearance of the injection molding part is good, and the injection molding part is easy to demould. In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the soft and hard rubber injection molding structure comprises a lower die holder for positioning a first hard rubber piece, an upper die holder for positioning a second hard rubber piece, a plurality of ejector pins arranged in the lower die holder and used for ejecting the first hard rubber piece, and upper inserts arranged in the upper die holder and movably propped against two sides of the first hard rubber piece; and the upper die holder and the lower die holder are matched to form a die cavity for forming the soft rubber piece along the periphery Xiang Lianjie of the second hard rubber piece.

Specifically, the first hard rubber piece is of an inverted groove body structure, the notch of the first hard rubber piece is positioned in the lower die holder downwards, and a lower insert for supporting and positioning the first hard rubber piece is arranged in the lower die holder.

Specifically, the surface of first hard rubber spare is provided with the special-shaped window that is used for shaping soft rubber spare.

Specifically, the soft rubber piece comprises a lower annular edge which is formed along the circumferential direction of the bottom surface of the second hard rubber piece and protrudes downwards, an upper annular edge which is connected with the lower annular edge and protrudes upwards, and a connecting edge which is connected with the upper annular edge and is formed by a special-shaped window.

Specifically, a group of contact points penetrating through the soft rubber piece are arranged on the bottom surface of the second hard rubber piece.

Specifically, be provided with the upper push rod that runs through its inside actively in the upper die base, the bottom of upper push rod supports the surface of second hard rubber spare.

Compared with the prior art, the soft and hard plastic injection molding structure has the beneficial effects that:

the special-shaped window is arranged in the first hard rubber piece, so that the connection strength between the soft rubber piece after injection molding and the first hard rubber piece and the second hard rubber piece can be improved, the second hard rubber piece and the soft rubber piece are formed to have good appearance, and the second hard rubber piece has elastic rebound performance, so that the function of the soft rubber piece as a key can be met; in the die sinking process, the first hard rubber piece is pressed by the upper insert, so that the first hard rubber piece is reserved in the lower die holder, the first hard rubber piece is ejected out through the ejector pin again, and the product is completely and reliably molded after demolding.

Drawings

FIG. 1 is a schematic diagram of a lower die holder according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of the upper die holder removed in the present embodiment;

FIG. 3 is a schematic view of the upper insert in this embodiment;

FIG. 4 is a schematic view of the lower insert structure in this embodiment;

FIG. 5 is a schematic diagram showing the front structure of the product in this embodiment;

FIG. 6 is a schematic view of the reverse structure of the product in this embodiment;

the figures represent the numbers:

the plastic injection molding machine comprises a first hard plastic part, a special-shaped window 11, a lower die holder 2, a thimble 21, a lower insert 22, a second hard plastic part 3, an upper insert 4, an upper push rod 41, a soft plastic part 5, a lower annular edge 51, an upper annular edge 52, a connecting edge 53, a contact point 54 and a glue injection point 55.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely, but is apparent to those skilled in the art in view of the present utility model.

Examples:

referring to fig. 1-6, the present embodiment is a soft and hard plastic injection molding structure, including a lower die holder 2 for positioning a first hard plastic part 1, an upper die holder for positioning a second hard plastic part 3, a plurality of ejector pins 21 arranged inside the lower die holder 2 for ejecting the first hard plastic part 1, and upper inserts 4 arranged in the upper die holder and movably abutted against two sides of the first hard plastic part 1; the upper die holder and the lower die holder 2 are matched to form a die cavity for forming the soft rubber piece 5 along the periphery Xiang Lianjie of the second hard rubber piece 3 by the first hard rubber piece 1.

In this embodiment, the first hard rubber member 1 is an inverted groove structure, the notch of the first hard rubber member 1 is positioned downward in the lower die holder 2, and the lower die holder 2 is provided with a lower insert 22 for supporting and positioning the first hard rubber member 1. The first hard rubber piece 1 is placed in advance at the position of the lower insert 22 before die assembly, so that the first hard rubber piece 1 is stably positioned inside the lower die holder 2, the surface part of the first hard rubber piece 1 is exposed out of the surface of the lower die holder 2, and the first hard rubber piece 1 is stably clamped and positioned when the upper die holder and the lower die holder 2 are die assembled.

The surface of the first hard rubber member 1 is provided with a special-shaped window 11 for molding the soft rubber member 5. In this embodiment, the second hard rubber member 3 is an inverted cover structure, the cover structure is specifically olive-shaped, the surface is an arc surface protruding outwards, and the second hard rubber member 3 is used as a finger contact surface of the key, so that a smooth appearance is required. The second hard rubber piece 3 is placed in the upper die holder in advance to be positioned before die assembly, when the upper die holder and the lower die holder 2 are die assembled, a cavity of the soft rubber piece 5 is formed between the first hard rubber piece 1 and the second hard rubber piece 3, and the soft rubber piece 5 comprises a lower annular edge 51 which is circumferentially formed along the bottom surface of the second hard rubber piece 3 and protrudes downwards, an upper annular edge 52 which is connected with the lower annular edge 51 and protrudes upwards, and a connecting edge 53 which is connected with the upper annular edge 52 and is formed along the special-shaped window 11. Because the soft rubber piece 5 is formed in the special-shaped window 11, the special-shaped structure is favorable for stably grabbing rubber after the soft rubber piece 5 is formed, and the bonding strength of the soft rubber piece 5 and the first hard rubber piece 1 is improved.

The bottom surface of the second hard rubber piece 3 is provided with a group of contact points 54 penetrating through the soft rubber piece 5, the group of contact points 54 are pressing points for realizing a key function of a product, when the surface of the second hard rubber piece 3 is stressed, the soft rubber piece 5 deforms, the contact points 54 are in pressing contact with the set position of an application scene, and when the surface of the second hard rubber piece 3 is pulled out, the soft rubber piece 5 automatically rebounds and resets. In this embodiment, the glue injection points 55 are respectively disposed at two opposite ends of the soft glue piece 5, and a glue injection manner from top to bottom is adopted, so that the surface appearance of the soft glue piece 3 is smooth, and pit defects are avoided. Correspondingly, the first hard rubber piece 1 is positioned in the lower die holder 2 in an inverted mode, the plurality of ejector pins 21 can eject the first hard rubber piece 1 from bottom to top, the ejector pins 21 are prevented from being arranged on the surface of the first hard rubber piece 1, good surface appearance of the first hard rubber piece 1 is ensured, ejection flaws are avoided, and the first hard rubber piece 1 is easy to be ejected from the lower die holder 2 after injection molding is completed.

The upper push rod 41 which penetrates through the inside of the upper die holder is arranged in the upper die holder, the bottom end of the upper push rod 41 abuts against the surface of the second hard rubber piece 3, the second hard rubber piece 3 is preset in the upper die holder, and in order to prevent the second hard rubber piece 3 from being clamped in the upper die holder and being difficult to demould, the upper push rod 41 is arranged to assist the upper insert 4 in demoulding the second hard rubber piece 3 in the mould opening process.

When the embodiment is applied, the first hard rubber piece 1 is placed in the lower die holder 2 in advance, the second hard rubber piece 3 is placed in the upper die holder in advance, the upper die holder and the lower die holder 2 are matched to form a die cavity, and a soft rubber piece 5 is formed between the first hard rubber piece 1 and the second hard rubber piece 3 in a mode of injecting from top to bottom during injection molding; when the die is opened, the upper insert 4 pushes the second hard rubber piece 3 to separate from the upper die holder, the product is integrally reserved on the lower die holder 2, and the plurality of ejector pins 21 eject the first hard rubber piece 1 to separate the product integrally from the lower die holder 2.

In this embodiment, by arranging the special-shaped window 11 in the first hard rubber member 1, the connection strength between the soft rubber member 5 after injection molding and the first hard rubber member 1 and the second hard rubber member 3 can be improved, the second hard rubber member 3 and the soft rubber member 5 are formed to have good appearance, and the second hard rubber member 3 has elastic rebound performance, so that the functionality of the soft rubber member 5 as a key can be satisfied; in the die sinking process, the first hard rubber piece 1 is pressed by the upper insert 4, so that the first hard rubber piece 1 is reserved in the lower die holder 2, the first hard rubber piece 1 is ejected out through the ejector pin 21, and the product is completely and reliably molded in a demolding mode.

In the description of the present utility model, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present utility model are described above, the embodiments are only used for facilitating understanding of the present utility model, and are not intended to limit the present utility model. Any person skilled in the art can make any modification and variation in form and detail without departing from the spirit and scope of the present disclosure, but the scope of the present disclosure is to be determined by the appended claims.

Claims (6)

1. Soft and hard glue injection moulding structure, its characterized in that: the die comprises a lower die holder for positioning a first hard rubber piece, an upper die holder for positioning a second hard rubber piece, a plurality of ejector pins arranged in the lower die holder and used for ejecting the first hard rubber piece, and upper inserts arranged in the upper die holder and movably propped against two sides of the first hard rubber piece; and the upper die holder and the lower die holder are matched to form a die cavity for forming the soft rubber piece along the periphery Xiang Lianjie of the second hard rubber piece.

2. The soft and hard plastic injection molding structure according to claim 1, wherein: the first hard rubber piece is of an inverted groove body structure, a notch of the first hard rubber piece is positioned in the lower die holder downwards, and a lower insert for supporting and positioning the first hard rubber piece is arranged in the lower die holder.

3. The soft and hard plastic injection molding structure according to claim 1, wherein: the surface of the first hard rubber piece is provided with a special-shaped window for forming the soft rubber piece.

4. The soft and hard plastic injection molding structure according to claim 1, wherein: the soft rubber piece comprises a lower annular edge which is formed along the circumferential direction of the bottom surface of the second hard rubber piece and protrudes downwards, an upper annular edge which is connected with the lower annular edge and protrudes upwards, and a connecting edge which is connected with the upper annular edge and is formed by a special-shaped window.

5. The soft and hard plastic injection molding structure according to claim 1, wherein: the bottom surface of the second hard rubber piece is provided with a group of contact points penetrating through the soft rubber piece.

6. The soft and hard plastic injection molding structure according to claim 1, wherein: an upper push rod which penetrates through the upper die holder is arranged in the upper die holder, and the bottom end of the upper push rod abuts against the surface of the second hard rubber piece.

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