CN201287415Y

CN201287415Y - Special-shaped rubber loop mould

Info

Publication number: CN201287415Y
Application number: CNU2008201462760U
Authority: CN
Inventors: 萧余生; 洪守富
Original assignee: Haibao (Xiamen) Rubber Co Ltd
Current assignee: Xiamen Jing Bao Industry & Trade Co., Ltd.
Priority date: 2008-11-07
Filing date: 2008-11-07
Publication date: 2009-08-12
Anticipated expiration: 2018-11-07

Abstract

The utility model provides a mould for special-shaped rubber ring, for producing the special-shaped rubber ring whose sectional functional region is an acute angle, which at least comprises an annular upper framework and an annular lower framework which are movably connected, wherein the die spotting line between the frameworks is not on the acute angle or the die spotting line is on the acute angle and is vertical to one edge of the acute angle. The utility model changes the position of the die spotting line between the frameworks of the special-shaped rubber ring mould, therefore, the produced special-shaped rubber ring off from mould can avoid hair side at the functional acute angle as common products, thereby avoiding the abrasion on the function region in the polishing process on hair side, to confirm the sealing performance of the product and improve yield.

Description

A kind of special-shaped rubber ring mould

Technical field

The utility model relates to the technical field that rubber ring is made, and is concrete relevant with a kind of mfg. moulding die of special-shaped rubber ring.

Background technology

In the accurate accessory of automobile and some precision instruments, can use cross section a kind of special-shaped rubber ring 1 as shown in Figure 1, the cross section of this abnormity rubber ring 1 has three protruded stigmas 11, all be formed with a

wedge angle

12,13,14 on each protruded stigma 11,

wedge angle

12,13,14 is the functional areas of this abnormity rubber ring 1, the size of

wedge angle

12,13,14, angle whether standard determining should opposite sex rubber ring 1 the sealing quality.

At present, the special-shaped rubber ring 1 of this kind during fabrication, its mould is an annular, the cross section usually as shown in Figure 2, comprise the cope match-plate pattern 2 ' of flexible connection, middle template 3 ' and lower bolster 4 ', the spue line of cope match-plate pattern 2 ' and middle template 3 ' is just at two wedge angle 12 places, after the demoulding, the spue line place can form burr, need polish the unhairing limit, and because burr are formed at wedge angle 12 places, in polishing process, very easily cause the wearing and tearing of wedge angle 12, influence size, the angle of functional areas, cause the sealing property of this abnormity rubber ring 1 not good, and produce substandard products.Though and the spue line of middle template 3 ' and lower bolster 4 ' also is positioned on the wedge angle 13 of a protruded stigma 11, spue line is just vertical with one side of this wedge angle 13, so can carry out along this limit vertical with spue line when polishing, can not impact angle.

The utility model content

The purpose of this utility model is to provide a kind of mfg. moulding die of special-shaped rubber ring, so that should can not cause wearing and tearing to functional areas after the demoulding of abnormity rubber ring in the process of polishing, guarantees the sealing property of product, improves yield rate.

For achieving the above object, solution of the present utility model is:

A kind of mould of special-shaped rubber ring, be used to make the special-shaped rubber ring that the functional areas, cross section are wedge angle, at least comprise the cope match-plate pattern of annular of flexible connection and the lower bolster of annular, the spue line between described each template not on the wedge angle or spue line on wedge angle and vertical with one side of wedge angle.

The cross section of described special-shaped rubber ring has three protruded stigmas, all is formed with a wedge angle on each protruded stigma, and wedge angle is the functional areas of this abnormity rubber ring.

Described mould also comprises the middle template of annular, and cope match-plate pattern, middle template, lower bolster flexibly connect, and forms the annular die cavity of corresponding described special-shaped rubber ring behind the matched moulds, and the spue line between cope match-plate pattern and the middle template is not on wedge angle.

Spue line in described between template and the lower bolster is positioned on the wedge angle, and vertical with one side of wedge angle.

Flexibly connect with alignment pin between described each template.

After adopting such scheme, the special-shaped rubber ring mould that the utility model provides is by changing the position of spue line between each template, make the special-shaped rubber ring of manufacturing after the demoulding, can not stay burr as commonly using at the functional areas sharp corner, therefore just can in the process on polishing unhairing limit, not cause wearing and tearing to functional areas yet, thereby can guarantee the sealing property of product, improve yield rate.

Description of drawings

Fig. 1 is a special-shaped rubber ring schematic cross-section described in the utility model;

Fig. 2 is for commonly using schematic cross-section behind the mould matched moulds;

Fig. 3 is the utility model cope match-plate pattern schematic cross-section;

Fig. 4 is a template schematic cross-section in the utility model;

Fig. 5 is the utility model lower bolster schematic cross-section;

Fig. 6 is a schematic cross-section behind the utility model matched moulds.

The specific embodiment

Lifting a preferred embodiment below in conjunction with accompanying drawing further specifies the utility model.

The mould of a kind of special-shaped rubber ring that the utility model provides, be used to make cross section a kind of special-shaped rubber ring 1 as shown in Figure 1, the cross section of this abnormity rubber ring 1 has three protruded stigmas 11, all be formed with a wedge angle 12 on each protruded stigma 11, wedge angle 12 is the functional areas of this abnormity rubber ring 1, the size of wedge angle 12, angle whether standard determining should opposite sex rubber ring 1 the sealing quality.

Consult shown in Fig. 3-6, the mould that the utility model provides comprises the cope match-plate pattern 2 of annular, the middle template 3 of annular and the lower bolster 4 of annular, flexibly connect (known technology with alignment pin between cope match-plate pattern 2, middle template 3, the lower bolster 4, not shown), form the annular die cavity of corresponding described special-shaped rubber Fig. 1 behind the matched moulds, as shown in Figure 6, spue line between cope match-plate pattern 2 and the middle template 3 is not on

wedge angle

12,14, but skew up or down, spue line between middle template 3 and the lower bolster 4 just is positioned on the wedge angle 13, and spue line is vertical with one side of wedge angle 13.

It is other that burr promptly are formed at

wedge angle

12,14 after the demoulding, can carry out along the inclined-plane that forms burr when polishing, and can not cause wearing and tearing to functional areas; And the burr that wedge angle 13 places form are vertical with one side of wedge angle 13, so can carry out along this limit vertical with burr when polishing, also can not impact angle.

Like this, the special-shaped rubber ring mould that the utility model provides is by changing the position of spue line between each template, make the special-shaped rubber ring of manufacturing after the demoulding, can not stay burr as commonly using at the functional areas sharp corner, therefore just can in the process on polishing unhairing limit, not cause wearing and tearing to the functional areas of special-shaped rubber ring 1 yet, thereby can guarantee the sealing property of product, improve yield rate.

Claims

1, a kind of mould of special-shaped rubber ring, be used to make the special-shaped rubber ring that the functional areas, cross section are wedge angle, at least comprise the cope match-plate pattern of annular of flexible connection and the lower bolster of annular, it is characterized in that: the spue line between described each template not on the wedge angle or spue line on wedge angle and vertical with one side of wedge angle.

2, a kind of special-shaped rubber ring mould as claimed in claim 1, it is characterized in that: the cross section of described special-shaped rubber ring has three protruded stigmas, all is formed with a wedge angle on each protruded stigma, and wedge angle is the functional areas of this abnormity rubber ring.

3, a kind of special-shaped rubber ring mould as claimed in claim 2, it is characterized in that: described mould also comprises the middle template of annular, cope match-plate pattern, middle template, lower bolster flexibly connect, form the annular die cavity of corresponding described special-shaped rubber ring behind the matched moulds, the spue line between cope match-plate pattern and the middle template is not on wedge angle.

4, a kind of special-shaped rubber ring mould as claimed in claim 3 is characterized in that: the spue line in described between template and the lower bolster is positioned on the wedge angle, and vertical with one side of wedge angle.

5, a kind of special-shaped rubber ring mould as claimed in claim 1 is characterized in that: flexibly connect with alignment pin between described each template.