CN203765899U - Gas auxiliary molding device - Google Patents
Gas auxiliary molding device Download PDFInfo
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- CN203765899U CN203765899U CN201320866469.4U CN201320866469U CN203765899U CN 203765899 U CN203765899 U CN 203765899U CN 201320866469 U CN201320866469 U CN 201320866469U CN 203765899 U CN203765899 U CN 203765899U
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- main body
- gas
- tube main
- base
- described air
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Abstract
The utility model relates to a gas auxiliary molding device. The gas auxiliary molding device comprises a gas needle main body, and is characterized by also comprising a forwarding part which is arranged on one end of the gas needle main body and matched with the end surface of the gas needle main body, an air passage which is used for the passing of airflow is arranged in the gas needle main body, one end of the air passage runs through one end part of the gas needle main body and is connected with an air inlet passage through a valve, the other end of the air passage runs through the end part with the forwarding part of the gas needle main body. When the gas auxiliary molding device is in work, a front mold and a rear mold are compounded, the material is fed through a feeding opening, after the injection molding is completed, the injection molding is stopped, the forwarding part stretches into a product, the valve is switched on, the product is filled with gas through the air passage under the air pressure, the forwarding part is pushed to move forwards while the pressure of the product is maintained, and surplus material in the product flows out of the product through an overflow groove. The forwarding part moves forwards under the effect of air pressure, so that the thickness of the wall of the product is uniform; moreover, the phenomenon that the melt which is not solidified flows downwards along the wall of the mold under the effect of the gravity can be avoided.
Description
Technical field
The utility model relates to mould applications, is specifically related to a kind of gas auxiliary forming device.
Background technology
Along with expanding economy, people are more and more higher to the requirement of shape of product and presentation quality.The product very thick for product wall thickness, appearance requirement is very high, be to guarantee product surface outward appearance and product strength, air-auxiliary injection forming (GAIM) technological break-through the restriction of conventional injection molding, can be applied to neatly the moulding of various products.Gas assisted injection molding technology refers to injects melt by Compressed Gas, and first solidify melt and mold wall contact position, and continue to flow forward along a line of least resistance in melt flows forward position under the driving of gases at high pressure simultaneously, until be full of whole die cavity.Goods are cooling in the situation that keeping gas pressure, in cooling procedure, gas is exerted pressure from inside to outside, guarantee that article outer surface is close to mold wall, and penetrate by gas secondary, from inside, supplement the volume contraction of bringing because of melt solidifying, after goods cooled and solidified, get rid of again gases at high pressure, die sinking, completes a molding cycle.
But for the production of the larger media lines of diameter, still there is larger Residual Wall Thickness in GAIM technique, be accompanied by larger remaining wall thickness, also can exist melt because of the danger that Action of Gravity Field flows downward along die wall, make this technology have limitation.Although in recent years newly occur that water shaping technology can partly solve this technology problem, it is complicated that the auxiliary technique of the relative gas of water assist mold moulding process is wanted.Equipment manufacturing cost is higher, it is the auxiliary 3 times of prices of gas that a water additionally arranges standby, the auxiliary development starting of water is simultaneously more late, the stability of water shaping technique and the qualification rate of goods, also need further to optimize and improve, in the process of water shaping, along with the different moulding material of product, have layer phenomenon of wearing in various degree, this device is between these two kinds of technologies, in conjunction with the shaping characteristic of two kinds of techniques.
The links such as key technology major control gas injection, exhaust and the air pressure control of the auxiliary injection mo(u)lding of gas.Gas injection pressure is controlled the uniformity that will affect product wall thickness not in place.Particularly gas in long straight air flue penetrate evenly and steadily, moulding hollow rate is larger.But near gas inlet, easily produce erratic fluctuations.In variable cross-section and L shaped air flue, gas penetrate easy generation finger-type effect.Exhaust does not have a great impact the quality of goods smoothly.This is the technical problem that we generally face solution.
Summary of the invention
The utility model provides a kind of gas auxiliary forming device, can solve the drawback that the melt that exists in the pipe production that diameter is larger flows downward along die wall because of Action of Gravity Field, simultaneously simple in structure, low cost.
In order to solve the problems of the technologies described above, the utility model is achieved by following technical proposals: a kind of gas auxiliary forming device, comprise air tube main body, it is characterized in that, also comprise the parts that move ahead of being located at described air tube main body one end and mating with this end face, in described air tube main body, be provided with the air flue that air feed stream passes through, one end of described air flue passes an end of described air tube main body, and be connected with air intake duct by valve, the other end of described air flue passes the end that described air tube main body is provided with the parts that move ahead.During work, front and back mould matched moulds, throat-fed, after injection moulding is full, stop injection moulding, the parts that now move ahead stretch into goods inside, valve open, gas is filled into goods inside by air flue under air pressure, at the pressurize product parts that promote to move ahead simultaneously, advances, and the inner unnecessary material of goods flows out goods by flash groove simultaneously.The parts that move ahead are moved forward by air pressure to make the wall thickness of goods even, and the phenomenon that does not exist not solidified melt to flow downward along die wall because of Action of Gravity Field.
As preferably, in described air tube main body, be also provided with the second air flue, described the second air flue runs through end and the air drain that described air tube main body is provided with the parts that move ahead, and described air drain is for losing heart.After goods complete, can be inside and outside pressure balanced by losing heart, facilitate die sinking.
As preferably, described valve is ball valve, and described ball valve offsets with the elastic component that is placed in described air flue.Ball-valve structure is simple, durable, good airproof performance.
As preferably, described elastic component is spring.
As preferably, described air tube main body is fixed in base, and described base comprises the first base and the second base, and described air tube main body is stuck in the first base and the second base by the step-like projection on it.Described air tube main body is fixed, be conducive to the stability in die manufacture.
As preferably, described air tube main body and described the first base contact-making surface are provided with the first sealing ring, and described air tube main body and described the second base contact-making surface are provided with the second sealing ring, and described the first base and the second base contact-making surface are provided with the 3rd sealing ring.These sealing rings have guaranteed the air-tightness of device, can when at logical gases at high pressure, not find gas leakage, install simple simultaneously.
Compared with prior art, the utlity model has following beneficial effect:
The utility model has avoided not solidified melt in gas assisted injection molding technology because of the phenomenon that Action of Gravity Field flows downward along die wall, to guarantee the even of wall thickness, has reduced percent defective, has saved cost.
The utility model is simple in structure, and cost is low, easy to operate.
Accompanying drawing explanation
Fig. 1 is cutaway view of the present utility model.
Fig. 2 is the end view drawing that in the utility model, air tube main body contacts with the parts that move ahead.
The specific embodiment
Below in conjunction with accompanying drawing and the specific embodiment, the utility model is described in further detail: a kind of gas auxiliary forming device, comprise air tube main body 3, the parts 5 that move ahead of being located at described air tube main body 3 one end and mating with this end face, in described air tube main body 3, be provided with the air flue 31 that air feed stream passes through, one end of described air flue 31 passes an end of described air tube main body 3, and be connected with air intake duct 7 by valve, the other end of described air flue 31 passes the end that described air tube main body 3 is provided with the parts 5 that move ahead.In described air tube main body 3, be also provided with the second air flue 11, described the second air flue 11 runs through end and the air drain 9 that described air tube main body 3 is provided with the parts 5 that move ahead, and described air drain 9 is for losing heart.In present embodiment, described valve is ball valve 1, and described ball valve 1 offsets with the elastic component that is placed in described air flue 31.In present embodiment, described elastic component is spring 2.Described air tube main body 3 is fixed in base, and described base comprises the first base 12 and the second base 13, and described air tube main body 3 is stuck in the first base 12 and the second base 13 by the step-like projection 14 on it.Described air tube main body 3 is provided with the first sealing ring 8 with described the first base 12 contact-making surfaces, and described air tube main body 3 is provided with the second sealing ring 4 with described the second base 13 contact-making surfaces, and described the first base 12 and the second base 13 contact-making surfaces are provided with the 3rd sealing ring 10.
During work, air tube main body 3 is arranged in base, guarantees the sealing of sealing ring, front and back mould matched moulds, throat-fed, after injection moulding is full, stops injection moulding, the parts 5 that now move ahead stretch into goods 6 inside, logical gases at high pressure from air intake duct 7, ball valve 1 is opened, and gas is filled into goods 6 inside by air flue 31 under air pressure, at the pressurize product parts 5 that promote to move ahead simultaneously, advance, the inner unnecessary material of goods 6 flow out goods 6 by flash groove simultaneously.The parts 5 that move ahead are moved forward by air pressure to make the wall thickness of goods 6 even, and the phenomenon that does not exist not solidified melt to flow downward along die wall because of Action of Gravity Field.After the complete pushing out product 6 of current line parts 5, stop injecting gas, in product, gas flows out goods 6 by the second air flue 11 and air drain 9, and rear mold is opened, line position oil cylinder return, and pushing-off product, ejecting mechanism return, puts move ahead parts 5, again injection moulding.
Whole system is simple for structure, reliable, and repair and replacement are convenient, and cost is low, and efficiency of assembling is high, highly versatile.
Claims (6)
1. a gas auxiliary forming device, comprise air tube main body (3), it is characterized in that, also comprise the parts that move ahead (5) of being located at described air tube main body (3) one end and mating with this end face, in described air tube main body (3), be provided with the air flue (31) that air feed stream passes through, one end of described air flue (31) passes an end of described air tube main body (3), and be connected with air intake duct (7) by valve, the other end of described air flue (31) passes the end that described air tube main body (3) is provided with the parts that move ahead (5).
2. a kind of gas auxiliary forming device according to claim 1, it is characterized in that, in described air tube main body (3), be also provided with the second air flue (11), described the second air flue (11) runs through end and the air drain (9) that described air tube main body (3) is provided with the parts that move ahead (5), and described air drain (9) is for losing heart.
3. a kind of gas auxiliary forming device according to claim 1 and 2, is characterized in that, described valve is ball valve (1), and described ball valve (1) offsets with the elastic component that is placed in described air flue (31).
4. a kind of gas auxiliary forming device according to claim 3, is characterized in that, described elastic component is spring (2).
5. a kind of gas auxiliary forming device according to claim 3, it is characterized in that, described air tube main body (3) is fixed in base, described base comprises the first base (12) and the second base (13), and described air tube main body (3) is stuck in the first base (12) and the second base (13) by the step-like projection (14) on it.
6. a kind of gas auxiliary forming device according to claim 5, it is characterized in that, described air tube main body (3) is provided with the first sealing ring (8) with described the first base (12) contact-making surface, described air tube main body (3) is provided with the second sealing ring (4) with described the second base (13) contact-making surface, and described the first base (12) and the second base (13) contact-making surface are provided with the 3rd sealing ring (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320866469.4U CN203765899U (en) | 2013-12-26 | 2013-12-26 | Gas auxiliary molding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320866469.4U CN203765899U (en) | 2013-12-26 | 2013-12-26 | Gas auxiliary molding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203765899U true CN203765899U (en) | 2014-08-13 |
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ID=51283138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320866469.4U Expired - Fee Related CN203765899U (en) | 2013-12-26 | 2013-12-26 | Gas auxiliary molding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203765899U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103737790A (en) * | 2013-12-26 | 2014-04-23 | 宁波舜宇模具有限公司 | Gas-assisted molding device |
-
2013
- 2013-12-26 CN CN201320866469.4U patent/CN203765899U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103737790A (en) * | 2013-12-26 | 2014-04-23 | 宁波舜宇模具有限公司 | Gas-assisted molding device |
| CN103737790B (en) * | 2013-12-26 | 2016-03-09 | 宁波舜宇模具有限公司 | A kind of foaming with gas device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 315400, No. 518, Shun Shun Road, Yuyao, Zhejiang, Ningbo Patentee after: NINGBO SUNNY MOULD CO., LTD. Address before: 315455, No. 518, Shun Shun Road, Yuyao, Zhejiang, Ningbo Patentee before: Ningbo Sunny Mould Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20181226 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |