CN201287431Y

CN201287431Y - Mould for cup shaped rubber loop

Info

Publication number: CN201287431Y
Application number: CNU2008201461166U
Authority: CN
Inventors: 萧智宏; 洪守富
Original assignee: Haibao (Xiamen) Rubber Co Ltd
Current assignee: Xiamen Jing Bao Industry & Trade Co., Ltd.
Priority date: 2008-10-29
Filing date: 2008-10-29
Publication date: 2009-08-12
Anticipated expiration: 2018-10-29

Abstract

The utility model provides a mold for cup-shaped rubber rings, which comprises an upper mold plate, a middle mold plate, a lower mold plate and a mold core, wherein the upper mold plate, the middle mold plate and the lower mold plate are ring-shaped and movably connected with each other The mold is closed to form a mold cavity with the section similar to the shape of a cup, the mold cavity is formed in the middle mold plate, the upper mold plate and the lower mold plate respectively limit the upper border and the lower border of the mold cavity, and the mold core is positioned by engaging with the lower mold plate. Further the mold core is composed of an internal core and an external core, wherein the external core is hollow, the lower end of the external core is equipped with an opening, and the upper end of the external core is engaged and connected with the internal core. The mold core of the mold for cup-shaped rubber rings is composed of an internal core and an external core instead of conventional integration, the external core is hollow, and the lower end of the external core is equipped with an opening to communicate with outside, thereby air in the mold cavity can be discharged from the joint of the internal core and the external core, the mold cavity discharges air smoothly, and defective products with uneven wall thickness or with bubbles, air holes and the like can be avoided.

Description

The mould of a kind of glass of type rubber ring

Technical field

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

Background technology

Rubber ring is a kind of common seal, and regular meeting uses the rubber ring 6 of cross section similar cup type in auto parts machinery and some precision instruments, as shown in Figure 4.At present, this kind cup type rubber ring during fabrication, its mould is an annular, the cross section usually as shown in Figure 1, the cope match-plate pattern 1, middle template 2, lower bolster 3 and the core rod 4 that comprise flexible connection, matched moulds form the die cavity 5 of similar cup type, and die cavity 5 is formed in the middle template 2, cope match-plate pattern 1 limits die cavity 5 upper and lower borders respectively with lower bolster 3, and core rod 4 is by cooperating the location with lower bolster 3.So, when perfusion, gas in the die cavity 5 can only be discharged with the matched moulds place of middle template 2 and the matched moulds place of middle template 2 and lower bolster 3 by cope match-plate pattern 1, because die cavity 5 is darker, and sidewall thickness is less, only the rubber ring that can cause moulding by the exhaust of up-and-down boundary place very easily causes wall unevenness even or forms bubble or pore near the surface, the generation substandard products at sidewall because of exhausting problem.

The utility model content

The purpose of this utility model is to provide a kind of makes the die cavity exhaust smooth and easy, and can not produce the cup type rubber ring that substandard products such as bubble, pore are spared or had to wall unevenness.

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

The mould of a kind of glass of type rubber ring, comprise the cope match-plate pattern of the annular of flexible connection, middle template, lower bolster and core rod, matched moulds forms the die cavity that the cross section is similar cup type, die cavity is formed in the middle template, cope match-plate pattern and lower bolster limit the upper and lower border of die cavity respectively, and core rod is by cooperating the location with lower bolster; Described core rod is made up of inner core and outer core, outer core hollow, and lower ending opening, upper end and inner core are connected.

Described outer core upper end forms a gradually wide fluting, and the inner core upper end forms the holding section with the convergent that cooperates of slotting, and outer in-core portion is stretched in the lower end.

Described outer core cooperates fixing with lower bolster.

Flexibly connect with alignment pin between described each template.

After adopting such scheme, core rod of the present utility model is constituted by one-body molded the changing into by inner core and outer core of commonly using, and outer core hollow, lower ending opening is in communication with the outside, gas in the die cavity then can be discharged by the inner core and the junction of outer core, make the die cavity exhaust smooth and easy, and it is even or substandard products such as bubble, pore are arranged can not produce wall unevenness.

Description of drawings

Fig. 1 commonly uses a glass type rubber ring mold sections schematic diagram;

Fig. 2 is the utility model schematic cross-section;

Fig. 3 is the outer core schematic cross-section of the utility model;

Fig. 4 is the utility model inner core schematic cross-section;

Fig. 5 is a cup type rubber ring schematic cross-section.

The specific embodiment

See also shown in Fig. 2-4, be a preferred embodiment of the present utility model.

A kind of glass mould of type rubber ring 6 of making that the utility model provides, the cope match-plate pattern 1, middle template 2, lower bolster 3 and the core rod 4 that comprise the annular that flexibly connects with alignment pin, matched moulds forms the die cavity 5 that the cross section is similar cup type, in the template 2, cope match-plate pattern 1 and lower bolster 3 limited the upper and lower border of die cavity 5 respectively during die cavity 5 was formed at.

Described core rod 4 is made up of inner core 42 and outer core 41, as shown in Figure 3, outer core 41 hollows, lower ending opening, upper end form a gradually wide from the bottom to top fluting 43, and inner core 42 upper ends form the holding section 44 with fluting 43 convergents from top to bottom that cooperate, outer core 41 inside are stretched in the lower end, when inner core 42 inserts in the outer core and to cooperate naturally with it, slot 43 and holding section 44 between can form steam vent, be beneficial to the discharge of die cavity 5 interior gases when pouring into.And, inner core 42 is produced pressure along with the perfusion of rubber mass, make holding section 44 and fluting 43 compression fit.

Form opening 31 in the middle of described lower bolster 3 lower ends, outer core 41 lower ends are stretched in the opening 31 and its tight fit, thereby outer core 41 are cooperated fixing with lower bolster 3.

Core rod 4 of the present utility model is constituted by one-body molded the changing into by inner core 42 and outer core 41 of commonly using, gas in the die cavity 5 can be discharged by the inner core 42 and the junction of outer core 41, make the die cavity exhaust smooth and easy, and it is even or substandard products such as bubble, pore are arranged can not produce wall unevenness, improves yield rate.

The above only is a preferable possible embodiments of the present utility model, can not limit scope of the present utility model with this, and all equivalences of being done according to the utility model spirit are replaced or modified, and all must be included in the scope of the present utility model.

Claims

1, the mould of a kind of glass of type rubber ring, comprise the cope match-plate pattern of the annular of flexible connection, middle template, lower bolster and core rod, matched moulds forms the die cavity that the cross section is similar cup type, die cavity is formed in the middle template, cope match-plate pattern and lower bolster limit the upper and lower border of die cavity respectively, and core rod is by cooperating the location with lower bolster; It is characterized in that:

Described core rod is made up of inner core and outer core, outer core hollow, and lower ending opening, upper end and inner core are connected.

2, a kind of glass of type rubber ring mould as claimed in claim 1 is characterized in that: described outer core upper end forms a gradually wide fluting, and the inner core upper end forms the holding section with the convergent that cooperates of slotting, and outer in-core portion is stretched in the lower end.

3, a kind of glass of type rubber ring mould as claimed in claim 1 is characterized in that: described outer core cooperates fixing with lower bolster.

4, a kind of glass of type rubber ring mould as claimed in claim 1 is characterized in that: flexibly connect with alignment pin between described each template.