CN201169027Y

CN201169027Y - Product mould having through hole

Info

Publication number: CN201169027Y
Application number: CNU2008200425942U
Authority: CN
Inventors: 王贤云; 何世雄; 吴小平
Original assignee: Foxlink Electronics Dongguan Co Ltd; Cheng Uei Precision Industry Co Ltd
Current assignee: Foxlink Electronics Dongguan Co Ltd; Cheng Uei Precision Industry Co Ltd
Priority date: 2008-01-04
Filing date: 2008-01-04
Publication date: 2008-12-24
Anticipated expiration: 2018-01-04

Abstract

The utility model discloses a molding mould of the products with through holes, which comprises a female mould cavity provided with a cored hole and a male mould cavity provided with a mold core. One end of the mold core is positioned in the cored hole, and the mold core is composed of a column-shaped molding part, a positioning part extending from the middle part of the tail end on the molding part and a frustum-shaped guiding part extending from the tail end of the positioning part. A stopping surface is formed at the connecting position between the molding part and the positioning part, the guiding part and the positioning part are positioned in the cored hole, the stopping surface is tightly pressed on the female mould cavity, and the molding part is positioned between the male mould cavity and the female mould cavity, thereby the molding mould of the products with through holes adopts the stopping surface to tightly press on the female mould cavity, thus the plastic cement in the molten state can be prevented from entering the clearance between the positioning part and the cored hole during the process of product injection molding, thus burrs and section differences are avoided.

Description

Mould with through hole product

Technical field

The utility model relates to a kind of mould, relates in particular to a kind of mould with through hole product.

Background technology

Along with development of electronic technology, portable electronic product develops towards compact direction, therefore the precision and the quality of formed product processing is had higher requirement.Figure 1 shows that a kind of existing mould with through hole plastic cement products, it comprises a male model benevolence 1 ' and a mother module core 2 ', and the part between male model benevolence 1 ' and the mother module core 2 ' is core chamber 3 '.A core 10 ' is extended in male model benevolence 1 ' upper end, and core 10 ' is made up of the guidance part 102 ' of the extended circular cone shape of a columned forming part 101 ' and forming part 101 ' upper end.Mother module core 2 ' is gone up corresponding core 10 ' and is offered a columned cored hole 20 '.During making, the part of guidance part 102 ' guiding forming part 101 ' is inserted in the cored hole 20 '.Insert when making core 10 ' insert cored hole 20 ' smooth and easyly, require to keep a micro gap 4 ' between the hole wall of the peripheral surface of core 10 ' and cored hole 20 '.

But during the product casting, the plastic cement of molten condition is easy to along the slit 4 ' and enters cored hole 20 ', and causes product at core 10 ' with cored hole 20 ' interface forms burr and section is poor, so can not satisfy the requirement of the precision and the quality of product.

The utility model content

The purpose of this utility model is to provide a kind of mould with through hole product that can effectively avoid burr and section difference to produce at defective and deficiency that prior art exists.

For achieving the above object, the utility model provides a kind of mould with through hole product, and it comprises that a mother module core and that offers cored hole is provided with the male model benevolence of core.One end of core places in the cored hole, and this core is made up of from extended location division, the middle part of forming part end with from the guidance part of the terminal extended frustum of location division the forming part of a column.The junction of forming part and location division forms a stop surface, and guidance part and location division place in the cored hole, and stop surface is pressed on the mother module core, and forming part places between the mother module core of male model Renhe.

As mentioned above, the utlity model has the mould of through hole product, be pressed on the mother module core, in product casting process by stop surface, the plastic cement that can stop molten condition enters in the slit between location division and the cored hole, thereby can avoid the formation of burr and section difference.

Description of drawings

Fig. 1 is a kind of existing illustrative view with mould of through hole product.

Fig. 2 is the stereogram that the utlity model has a kind of embodiment of mould of through hole product, among the figure part-structure is dissectd.

Fig. 3 is the stereogram of another embodiment that the utlity model has the mould of through hole product, among the figure part-structure is dissectd.

The description of reference numerals of each assembly is as follows among the figure:

[prior art]

Male model benevolence 1 ' core 10 '

Forming part 101 ' guidance part 102 '

Mother module core 2 ' cored hole 20 '

3 ' slit 4 ', core chamber

[the utility model]

Mould 100 with through hole product

Male model benevolence 1 core 10

Forming part 11 location divisions 12

Guidance part 13 stop surfaces 14

Mother module core 2 cored holes 20

Core chamber 3

The specific embodiment

By describing technology contents of the present utility model, structural feature in detail, realized purpose and effect, give explanation below in conjunction with embodiment and conjunction with figs. are detailed.

See also Fig. 2, the mould 100 that the utlity model has the through hole product comprises a male model benevolence 1 and a mother module core 2.Part between male model benevolence 1 and the mother module core 2 is core chamber 3.

One end of male model benevolence 1 is provided with a core 10, core 10 comprises a columned forming part 11, columned location division 12 is extended at the terminal middle part of forming part 11, thereby the junction of forming part 11 and location division 12 forms the stop surface 14 of a ring-type, promptly is positioned at the part outside 12 borders, location division on the end face of forming part 11 ends.The end of location division 12 extends the guidance part 13 of a circular cone shape.

A columned cored hole 20 is offered in the location division 12 of corresponding core 10 on the mother module core 2, and the diameter of cored hole 20 is less than the diameter of section of forming part 11.During the mould matched moulds, the guidance part 13 of core 10 can be guided location division 12 and be inserted in the cored hole 20.Insert when making location division 12 insert cored hole 20 smooth and easyly, require the diameter of section of location division 12 to be slightly smaller than the diameter of section of cored hole 20, promptly keep a micro gap (not shown) between the hole wall of the peripheral surface of location division 12 and cored hole 20.Stop surface 14 is pressed on the lower surface of mother module core 2, and forming part 11 places the core chamber 3 between male model benevolence 1 and the mother module core 2.

As mentioned above, the utlity model has the mould 100 of through hole product, be pressed on by stop surface 14 on the lower surface of mother module core 2, so sealed the slit, the plastic cement that has stopped molten condition in the product casting process enters in the slit between location division 12 and the cored hole 20, thereby has avoided the formation of burr and section difference.

Protection domain of the present utility model is not limited to the foregoing description, have multiple increase, revise and replace all be included in the scope of patent protection.As shown in Figure 3, the cross section of core 10 can also be square, and the cross section of the cored hole 20 of corresponding mother module core 2 also is square, the guidance part 13 corresponding side of being awl frustums.

Claims

1. mould with through hole product, comprise that a mother module core and that offers cored hole is provided with the male model benevolence of core, one end of core places in the cored hole, it is characterized in that: core is made up of from the terminal extended location division, middle part of forming part with from the terminal extended frustum guidance part of location division the forming part, of a column, the junction of forming part and location division forms a stop surface, guidance part and location division place in the cored hole, stop surface is pressed on the mother module core, and forming part places between the mother module core of male model Renhe.

2. the mould with through hole product as claimed in claim 1 is characterized in that: keep a micro gap between the peripheral surface of described location division and the hole wall of cored hole, described stop surface seals this slit.