CN211842876U

CN211842876U - Metal insert and sealing structure

Info

Publication number: CN211842876U
Application number: CN201922075566.1U
Authority: CN
Inventors: 杨培邦; 张刚; 许明星; 谢华东
Original assignee: Fu Tai Hua Precision Electronic Zhengzhou Co Ltd
Current assignee: Fulian Precision Electronics Zhengzhou Co ltd
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-11-03
Anticipated expiration: 2029-11-26

Abstract

A metal insert comprises a first glue sealing surface used for being attached to a mold. The metal insert further comprises: the second glue sealing surface is positioned below the first glue sealing surface and is formed by sinking from the edge of the first glue sealing surface; the connecting surface is connected between the first sealing glue surface and the second sealing glue surface; the second sealing glue surface is used for being tightly attached to the mold and preventing the flowing plastic glue during injection molding from flowing onto the first sealing glue surface. The novel glue sealing structure is further provided. The utility model provides a metal insert and glue structure are through being located the second of first glue face below of gluing seals gluey face and mould and hugs closely the mobile plastic flow direction when blockking to mould plastics first glue face, thereby avoids first glue face of gluing produces the excessive phenomenon of gluing.

Description

Metal insert and sealing structure

Technical Field

The utility model relates to a field of moulding plastics, in particular to can prevent that mobile plastic from producing the metal insert and the glue sealing structure of excessive glue when moulding plastics.

Background

In order to meet the development of product diversity, many products now include both metal and plastic as individual parts, and therefore, during the production of the parts, metal parts are required to be placed as inserts in a mold, and the required parts are formed by injection molding of plastic. In order to facilitate injection molding production, plastic with strong flowability is generally selected for injection molding, however, since the plastic with strong flowability is adopted for injection molding, in the part molding process of a product, the plastic easily flows into a gap of a joint surface between a mold and a part, so that the problem of glue overflow occurs on the joint surface between the mold and the part.

SUMMERY OF THE UTILITY MODEL

Accordingly, there is a need for a molding structure and a metal insert that can prevent the overflow of the fluid plastic during the injection molding process.

A metal insert comprising a first glue surface for abutting a mold, said metal insert further comprising: the second glue sealing surface is positioned below the first glue sealing surface and is formed by sinking from the edge of the first glue sealing surface; the connecting surface is connected between the first sealing glue surface and the second sealing glue surface; the second sealing glue surface is used for being tightly attached to the mold and preventing the flowing plastic glue during injection molding from flowing onto the first sealing glue surface.

A glue sealing structure comprises a mould, the glue sealing structure comprises the metal insert, and the mould comprises: the first parting surface is tightly attached to the first sealing surface; the second parting surface is tightly attached to the second sealing glue surface; and a connection face facing the engagement face; the second parting surface is used for preventing the flowing plastic cement from flowing from the second sealing glue surface to the first sealing glue surface.

The metal insert and the sealing structure closely stick to the mold through the second sealing surface below the first sealing surface to prevent the flowing plastic from flowing to the first sealing surface during injection molding, so that the phenomenon of glue overflow on the first sealing surface is avoided.

Drawings

FIG. 1 is a schematic view of an injection molded structure.

FIG. 2 is a perspective view of a product formed after the molding compound structure of FIG. 1 is injection molded.

Fig. 3 is a perspective view of the metal insert of fig. 2.

Fig. 4 is a cross-sectional view taken along line IV-IV in fig. 2.

Description of the main elements

The following detailed description of the invention will be further described in conjunction with the above-identified drawings.

Detailed Description

Referring to fig. 1 to 4, the present invention provides a molding structure 100 including a mold 20 and a metal insert 40. The metal insert 40 is placed in the mold 20 at a predetermined position for injection molding into a product 60 in the mold 20. In one embodiment, the metal insert 40 may be made of magnesium alloy, aluminum alloy, or the like.

The metal insert 40 includes a first glue surface 42, a second glue surface 44, and an engagement surface 46. The first sealing surface 42 and the second sealing surface 44 are located on different planes, and a preset height is formed between the first sealing surface 42 and the second sealing surface 44. The predetermined height is a height at which the plastic cannot flow from the second sealing surface 44 to the first sealing surface 42 when the sealing structure 100 is injection molded. In one embodiment, the predetermined height is not less than 0.6 mm. It is understood that the preset height can be adjusted according to actual conditions. The second glue sealing surface 44 is located below the first glue sealing surface 42 and is formed by sinking from the edge of the first glue sealing surface 42. In one embodiment, the width of the second glue sealing surface 44 is not less than 0.5 mm. It can be understood that the width of the second glue sealing surface 44 can be adjusted according to actual conditions. The engaging surface 46 is connected between the first glue sealing surface 42 and the second glue sealing surface 44. In one embodiment, the first glue sealing surface 42 and the second glue sealing surface 44 are disposed in parallel, and the engaging surface 46 is perpendicular to the first glue sealing surface 42 and the second glue sealing surface 44. In another embodiment, the first glue sealing surface 42 and the second glue sealing surface 44 are disposed non-parallel, and an included angle between the engaging surface 46 and the second glue sealing surface 44 is an obtuse angle. The first sealing surface 42 is formed with a hole 48, and the hole 48 may be a threaded hole, a unthreaded hole, or the like.

The mold 20 includes a first parting surface 22, a second parting surface 24, and a connecting surface 26. The connecting surface 26 is connected between the first parting surface 22 and the second parting surface 24. The first parting surface 22 is closely attached to the first glue sealing surface 42, and the second parting surface 24 is closely attached to the second glue sealing surface 44. The connection face 26 faces the engagement face 46. When the fluid plastic is injected into the sealing structure 100, the plastic is filled from the lower portion of the second sealing surface 44, and when the plastic is filled to the second sealing surface 44, the second parting surface 24 blocks the plastic from flowing to the first sealing surface 42, even if there is a gap between the second parting surface 24 and the second sealing surface 44, the plastic cannot flow to the first sealing surface 42 because there is a predetermined distance between the first sealing surface 42 and the second sealing surface 44, so as to avoid the overflow phenomenon generated on the first sealing surface 42. In one embodiment, the plastic has a temperature of 250 ℃ and a melt index of 12cm during injection molding³/10min-20cm³And/10 min. In one embodiment, the connecting surface 26 faces the engagement surface 46 and is spaced apart from the engagement surface 46. Since the connecting surface 26 and the engaging surface 46 are spaced apart from each other, even if the plastic flows from the second sealing surface 44 to the first sealing surface 42, the pressure of the plastic is rapidly reduced, so as to prevent the plastic from flowing into the first sealing surface 42, and further prevent the plastic from flowing into the hole 48 on the first sealing surface 42, thereby forming the plastic portion 70 combined with the metal insert 40.

The metal insert 40 further includes a side 50 connected to the second glue face 44. The mold 20 also includes a relief surface 28. The wall surface is opposite to the side surface 50 and is spaced apart from the side surface 50. Since the avoiding surface 28 is spaced apart from the side surface 50, the mold 20 is prevented from contacting the side surface 50 and scratching the side surface 50. The offset surface 28 is gradually increased from the side surface 50 in the direction away from the second glue sealing surface 44, so as to facilitate demoulding.

The sealing structure 100 closely contacts the mold 20 through the second sealing surface 44 of the metal insert 40 located below the first sealing surface 42, so as to prevent the flowing plastic from flowing to the first sealing surface 42 during injection molding, thereby preventing the first sealing surface 42 from overflowing.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be taken as limiting the present invention, and that suitable modifications and variations of the above embodiments are within the scope of the present invention as disclosed.

Claims

1. A metal insert comprising a first glue application surface for engaging with a mold, said metal insert further comprising:

the second glue sealing surface is positioned below the first glue sealing surface and is formed by sinking from the edge of the first glue sealing surface; and

an engagement surface connected between the first sealing surface and the second sealing surface;

the second glue sealing surface is used for being tightly attached to the mold and preventing the flowing plastic glue during injection molding from flowing onto the first glue sealing surface.

2. The metal insert of claim 1, wherein the first encapsulant surface is spaced apart from the second encapsulant surface by a predetermined height.

3. The metal insert of claim 2, wherein said predetermined height is not less than 0.6 mm.

4. The metal insert of claim 1, wherein the width of said second glue side is not less than 0.5 mm.

5. The metal insert of claim 1, wherein the first encapsulant surface is disposed parallel to the second encapsulant surface, and the engagement surface is perpendicular to the first encapsulant surface and the second encapsulant surface.

6. The metal insert of claim 1, wherein said first molding surface defines an aperture.

7. The metal insert of claim 6, wherein said hole is a threaded hole.

8. An encapsulation structure comprising a mold, wherein the encapsulation structure comprises the metal insert of any one of claims 1-7, and the mold comprises:

the first parting surface is tightly attached to the first sealing surface;

the second parting surface is tightly attached to the second sealing glue surface; and

a connection face facing the engagement face;

the second parting surface is used for preventing the flowing plastic cement from flowing from the second sealing glue surface to the first sealing glue surface.

9. The package assembly of claim 8, wherein said connecting surface is spaced apart from said engagement surface.

10. The package assembly of claim 8, wherein the metal insert further comprises a side surface connected to the second package surface, and the mold further comprises a standoff surface opposite the side surface and spaced apart from the side surface.