CN203739152U - Liquid silicone rubber injection mold venting structure - Google Patents

Liquid silicone rubber injection mold venting structure Download PDF

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Publication number
CN203739152U
CN203739152U CN201420022286.9U CN201420022286U CN203739152U CN 203739152 U CN203739152 U CN 203739152U CN 201420022286 U CN201420022286 U CN 201420022286U CN 203739152 U CN203739152 U CN 203739152U
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China
Prior art keywords
silicone rubber
patrix
silica gel
venting
exhaust
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Active
Application number
CN201420022286.9U
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Chinese (zh)
Inventor
林清华
陈庸增
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Rui Jia (yixing) Technology Co Ltd
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Rui Jia (yixing) Technology Co Ltd
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Priority to CN201420022286.9U priority Critical patent/CN203739152U/en
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Abstract

The utility model discloses a liquid silicone rubber injection mold venting structure. The liquid silicone rubber injection mold venting structure comprises an upper injection mold, wherein a plurality of closed silicone rubber sealing surfaces are formed on the upper injection mold, and the silicone rubber sealing surfaces are closely adhered to a plastic part to be injected to form a silicone rubber injection runner for injecting silicone rubber; and one end of the silicone rubber injection runner is provided with a silicone rubber injection opening, and the other end of the silicone rubber injection runner is provided with a venting part; the venting part comprises a vent hole formed in the upper injection mold, a venting handle is arranged in the vent hole, and a gap being 0.01mm is reserved between the head part of the venting handle and the silicone rubber injection runner. According to the liquid silicone rubber injection mold venting structure, the venting handle structure is adopted, the size of the head of the venting handle is controlled to achieve the effect of venting without silicone rubber overflowing; and the liquid silicone rubber injection mold venting structure has simple structure and good venting effect, is easy to realize, and ensures the quality of the processed products to be reliable and stable.

Description

A kind of fluid silicone rubber injection molding exhaust structure
Technical field
The utility model relates to a kind of fluid silicone rubber injection molding, relates in particular to a kind of fluid silicone rubber injection molding exhaust structure.
Background technology
Fluid silicone rubber injection molding is the one of thermosetting plastics mould, can be with liquid-state silicon gel as shaping raw material, send into silica gel injection machine by special mixing system, and injected in the liquid-state silicon gel mould of heating in certain pressure-speed bet by silica gel injection machine, to obtain silica gel product, can realize fully-automatic production, have advantages of that efficiency is high.
At present, adopt fluid silicone rubber injection molding to make for mobile phone and electronic product etc. for the anti-silica gel part falling of water proof and dust proof more, exhaust structure design is the pith of fluid silicone rubber injection molding, if do not arrange the air at injecting glue closed area place, silica gel is by short shot, and the excessive glue that may also can overflow of pressure.Therefore its design quality directly determines the quality of injection effect and product quality.Existing fluid silicone rubber injection molding exhaust structure generally has complex structure and the bad shortcoming of exhaust, finally causes starved in product injection process, the bad phenomenon such as glue of overflowing, and the fraction defective of shaped article is higher.
Utility model content
The purpose of this utility model is to provide a kind of fluid silicone rubber injection molding exhaust structure, it has simple in structure, good exhaust effect and the stable feature of converted products reliable in quality, to solve the problem that in prior art, fluid silicone rubber injection molding exhaust structure exists.
For reaching this object, the utility model by the following technical solutions:
A kind of fluid silicone rubber injection molding exhaust structure, it comprises injection patrix, on described injection patrix, be provided with the sealing face of some roads sealing, when matched moulds, described sealing face is adjacent to working of plastics to be injected the silica gel injection flow passage that is formed for injecting silica gel, one end of described silica gel injection flow passage is provided with silica gel injection port, the other end is provided with exhaust component, wherein, described exhaust component comprises the steam vent being opened on injection patrix, in described steam vent, be provided with exhaust handle, between the head of described exhaust handle and silica gel injection flow passage, there is gap.
Especially, described exhaust handle comprises afterbody, intermediate shank portion and head, and described intermediate shank portion and head are cylindrical structure, and the diameter of described intermediate shank portion is less than the diameter of described head, to ensure good exhaust effect.
Especially, described injection patrix is made up of the first patrix and second patrix two parts, the bottom of described the first patrix offers model cavity, on described upper model cavity and the second patrix, correspondence offers several fixing holes, hold-down screw is fixed on the second patrix in upper model cavity through both fixing holes, the joint place of the sidewall of described the second patrix and upper model cavity madial wall is as die joint, on described the first patrix, coordinate working of plastics to be processed to be provided with some roads sealing face along the periphery of described upper model cavity, described steam vent is opened on the first patrix.
Especially, between the head of described exhaust handle and silica gel injection flow passage, there is the gap of 0.01 ㎜.
The beneficial effects of the utility model are, compared with prior art described fluid silicone rubber injection molding exhaust structure adopts exhaust handle structure, control the head sizes of exhaust handle well, can reach neither overflow glue again can exhaust effect.Not only simple in structure, be easy to realize; And good exhaust effect, ensure the reliable and stable of converted products quality.
Brief description of the drawings
Fig. 1 is the structural representation of the fluid silicone rubber injection molding exhaust structure that provides of the utility model detailed description of the invention 1;
Fig. 2 is partial cross section's enlarged drawing of the fluid silicone rubber injection molding exhaust structure that provides of the utility model detailed description of the invention 1.
In figure:
1, the first patrix; 2, the second patrix; 3, fixing hole; 4, sealing face; 5, silica gel injection flow passage; 6, silica gel injection port; 7, steam vent; 8, afterbody; 9, intermediate shank portion; 10, head.
Detailed description of the invention
Further illustrate the technical solution of the utility model below in conjunction with accompanying drawing and by detailed description of the invention.
Refer to shown in Fig. 1 and Fig. 2, in the present embodiment, a kind of fluid silicone rubber injection molding exhaust structure comprises injection patrix, described injection patrix is made up of the first patrix 1 and second patrix 2 two parts, the bottom of described the first patrix 1 offers model cavity, on described upper model cavity and the second patrix 2, correspondence offers several fixing holes 3, hold-down screw is fixed on the second patrix 2 in upper model cavity through both fixing holes 3, on described the first patrix 1, coordinate working of plastics to be processed to be provided with some roads sealing face 4 along the periphery of described upper model cavity, when matched moulds, described sealing face 4 is adjacent to working of plastics to be injected the silica gel injection flow passage 5 that is formed for injecting silica gel, one end of described silica gel injection flow passage 5 is provided with silica gel injection port 6, the other end offers steam vent 7, in described steam vent, be provided with exhaust handle, described exhaust handle comprises afterbody 8, intermediate shank portion 9 and head 10, described intermediate shank portion 9 and head 10 are cylindrical structure, the diameter of described intermediate shank portion 9 is less than the diameter of described head 10, between the head 10 of described exhaust handle and silica gel injection flow passage 5, there is the gap of 0.01 ㎜, to reach, neither excessive glue again can exhaust effect.
The joint place of the sidewall of described the second patrix 2 and upper model cavity madial wall is as die joint, and difficulty of processing reduces greatly, and process equipment is required also to reduce, and middle stitching portion can exhaust, is also convenient to the later stage repair a die and change mould.
Under matched moulds state, the sealing face 4 of injection patrix is adjacent to working of plastics, now working of plastics forms with injection patrix the silica gel region sealing, injection patrix one end is by silica gel injection port 6 injecting glues, the full whole silica gel injection flow passage 5 of stream, air in whole silica gel injection flow passage 5 is all extruded to the other end of injection patrix simultaneously, is discharged by exhaust handle.
Above embodiment has just set forth general principle of the present utility model and characteristic; the utility model is not limited by above-mentioned example; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various variations and change, and these variations and change all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (4)

1. a fluid silicone rubber injection molding exhaust structure, it comprises injection patrix, on described injection patrix, be provided with the sealing face of some roads sealing, when matched moulds, described sealing face is adjacent to working of plastics to be injected the silica gel injection flow passage that is formed for injecting silica gel, one end of described silica gel injection flow passage is provided with silica gel injection port, the other end is provided with exhaust component, it is characterized in that, described exhaust component comprises the steam vent being opened on injection patrix, in described steam vent, be provided with exhaust handle, between the head of described exhaust handle and silica gel injection flow passage, there is gap.
2. fluid silicone rubber injection molding exhaust structure according to claim 1, it is characterized in that, described exhaust handle comprises afterbody, intermediate shank portion and head, and described intermediate shank portion and head are cylindrical structure, and the diameter of described intermediate shank portion is less than the diameter of described head.
3. according to the fluid silicone rubber injection molding exhaust structure described in claim 1 or 2 any one, it is characterized in that, described injection patrix is made up of the first patrix and second patrix two parts, the bottom of described the first patrix offers model cavity, on described upper model cavity and the second patrix, correspondence offers several fixing holes, hold-down screw is fixed on the second patrix in upper model cavity through both fixing holes, the joint place of the sidewall of described the second patrix and upper model cavity madial wall is as die joint, on described the first patrix, coordinate working of plastics to be processed to be provided with some roads sealing face along the periphery of described upper model cavity, described steam vent is opened on the first patrix.
4. according to the fluid silicone rubber injection molding exhaust structure described in claim 1 or 2 any one, it is characterized in that between the head of described exhaust handle and silica gel injection flow passage, thering is the gap of 0.01 ㎜.
CN201420022286.9U 2014-01-14 2014-01-14 Liquid silicone rubber injection mold venting structure Active CN203739152U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420022286.9U CN203739152U (en) 2014-01-14 2014-01-14 Liquid silicone rubber injection mold venting structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420022286.9U CN203739152U (en) 2014-01-14 2014-01-14 Liquid silicone rubber injection mold venting structure

Publications (1)

Publication Number Publication Date
CN203739152U true CN203739152U (en) 2014-07-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105014881A (en) * 2015-07-28 2015-11-04 上海蓝佩得模具科技有限公司 Silica gel mould

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105014881A (en) * 2015-07-28 2015-11-04 上海蓝佩得模具科技有限公司 Silica gel mould

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