CN203381128U - Negative-pressure injection mould for plastic products - Google Patents
Negative-pressure injection mould for plastic products Download PDFInfo
- Publication number
- CN203381128U CN203381128U CN201320357230.4U CN201320357230U CN203381128U CN 203381128 U CN203381128 U CN 203381128U CN 201320357230 U CN201320357230 U CN 201320357230U CN 203381128 U CN203381128 U CN 203381128U
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- front mould
- mould
- negative pressure
- pressure injection
- plastic cement
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Abstract
The utility model relates to the technical field of plastic injection moulds, in particular to a negative-pressure injection mould for plastic products. The negative-pressure injection mould comprises a front mould and a rear mould, wherein a plurality of cavities are formed inside the front mould, an additional plate is arranged on the front end surface of the front mould, a plurality of vent holes corresponding to the cavities are formed in the additional plate respectively, the vent holes are communicated with the cavities correspondingly and are communicated with one another by a vent groove path, and the vent groove path is communicated with an external air compression system. According to the negative-pressure injection mould for the plastic products, injection moulding can be performed in the cavities under a negative pressure state, plastic raw material for injection moulding can be rapidly filled in the cavities, the injection moulding efficiency is high, and the reaction between oxygen gas in the cavities and the plastic raw material is prevented, so that the burning of the plastic raw material is avoided; the performance and the surface quality of the plastic product are improved, therefore, precise, small and thin products can be machined through injection moulding; a positive-pressure blowing mode is utilized to blow out a product, the product bonding on the front mould is prevented, product deformation and damage are prevented and the demoulding operation is easy.
Description
Technical field:
The utility model relates to plastic-injection mould technical field, relates in particular to plastic cement products negative pressure injection forming mold.
Background technology:
The plastic cement products injection mo(u)lding is a kind of processing method that batch production is used during some complex-shaped parts, and specifically will the be heated material of thawing of finger injects die cavity by high pressure, after cooling curing, obtains formed products.Existing injection forming mold all carries out injection moulding and the demoulding under normal pressure, during injection moulding, owing to there being air in die cavity, plastic material can't be full of die cavity fast, injection moulding speed is slow, and the oxygen in die cavity can produce and react with plastic material, and plastic material is burnt, affect performance and the surface quality of plastic cement products, can't injection molding more accurate, size is less and the product of thin wall type; During the demoulding, because product is easy to be bonded on front mould, be not easy the demoulding, and be all to utilize thimble directly product to be ejected, easily cause deformation of products and damage.
The utility model content:
The purpose of this utility model is exactly the deficiency existed for prior art and provide a kind of and can enhance product performance and surface quality, improve the plastic cement products negative pressure injection forming mold of injection moulding efficiency.
To achieve these goals, the technical solution adopted in the utility model is:
Plastic cement products negative pressure injection forming mold, the rear mold that include front mould, with front mould, matches, rear mold is arranged on the front mould rear end face, front mould inside is provided with a plurality of die cavities, the front end face of front mould is provided with add-in card, offers a plurality of passages corresponding with a plurality of die cavities respectively on add-in card, and each passage is communicated with corresponding die cavity respectively, between a plurality of passages, by the ventilation tank circuit, be interconnected, the ventilation tank circuit is communicated with the extraneous air compressibility.
Described front mould inside is provided with a plurality of core rods, and core rod is arranged on front mould inside with removably, and die cavity is arranged in core rod.
Described core rod includes outer core and is arranged at least one combination inner core of outer core front end inside, mutually enclose the formation die cavity between combination inner core and outer core, set screw has been threaded in passage, the top, rear end of set screw is pressed on combination inner core foremost, set screw is hollow tubular structures, and the two ends of set screw hollow lumen are communicated with passage, die cavity respectively.
Described outer core is threaded in front mould inside by the external screw thread mode.
The described ventilation tank circuit is arranged on the front end face of add-in card, offers many air inlet ducts on the rear end face of add-in card, is distributed with a plurality of passages that are communicated with it on every air inlet duct.
The even parallel arrangement of described many air inlet ducts.
Described add-in card is provided with the ventilation interface, and the ventilation tank circuit is communicated with the extraneous air compressibility by the ventilation interface, between ventilation interface and extraneous air compressibility, is connected with reversal valve.
Between described add-in card and front mould, by sealing ring, be tightly connected.
The front end face of described add-in card is provided with hot-runner device.
The utility model beneficial effect is: the utility model includes front mould, rear mold, rear mold is arranged on the front mould rear end face, front mould inside is provided with a plurality of die cavities, the front end face of front mould is provided with add-in card, offer a plurality of passages corresponding with a plurality of die cavities respectively on add-in card, each passage is communicated with corresponding die cavity respectively, between a plurality of passages, by the ventilation tank circuit, be interconnected, the ventilation tank circuit is communicated with the extraneous air compressibility, the utility model first utilizes air compression system that the air sucking-off in the mould die cavity is formed to negative pressure, then the plastic material of molten condition is injected to die cavity and form product, during the demoulding, utilize air compression system to blow in the mould die cavity, make product break away from front mould, the utility model can make die cavity carry out injection moulding under negative pressure state, the injection moulding plastic raw material can be full of die cavity fast, injection moulding efficiency is high, and avoid oxygen in die cavity to react and make the plastic material burn with the plastic material generation, improve performance and the surface quality of plastic cement products, can injection molding more accurate, the product of the less and thin wall type of size, can utilize the malleation blowing method that product is blown out, prevent that product is bonded on front mould, prevents deformation of products and damage, the demoulding is easy.
The accompanying drawing explanation:
Fig. 1 is internal structure schematic diagram of the present utility model.
Fig. 2 is the rearview of the utility model add-in card.
Fig. 3 is the structural representation of the utility model core rod.
The specific embodiment:
Below in conjunction with accompanying drawing and preferred embodiment, the utility model is described in further detail, see shown in Fig. 1～3, plastic cement products negative pressure injection forming mold includes front mould 1, the rear mold 2 matched with front mould 1, rear mold 2 is arranged on front mould 1 rear end face, front mould 1 inside is provided with a plurality of die cavities 10, the front end face of front mould 1 is provided with add-in card 3, offer a plurality of passages 31 corresponding with a plurality of die cavities 10 respectively on add-in card 3, each passage 31 is communicated with corresponding die cavity 10 respectively, between a plurality of passages 31, by the ventilation tank circuit 32, be interconnected, the ventilation tank circuit 32 is communicated with the extraneous air compressibility.The utility model first utilizes air compression system that the air sucking-off in mould die cavity 10 is formed to negative pressure, then the plastic material of molten condition is injected to die cavity 10 and form product, during the demoulding, utilize air compression system to blow in mould die cavity 10, make product break away from front mould 1, the utility model can make die cavity 10 carry out injection moulding under negative pressure state, the injection moulding plastic raw material can be full of die cavity 10 fast, injection moulding efficiency is high, and avoid oxygen in die cavity 10 to react and make the plastic material burn with the plastic material generation, improve performance and the surface quality of plastic cement products, can injection molding more accurate, the product of the less and thin wall type of size, can utilize the malleation blowing method that product is blown out, prevent that product is bonded on front mould 1, prevents deformation of products and damage, the demoulding is easy.
The ventilation tank circuit 32 is arranged on the front end face of add-in card 3, offer many air inlet ducts 33 on the rear end face of add-in card 3, be distributed with a plurality of passages that are communicated with it 31 on every air inlet duct 33, the ventilation tank circuit 32, passage 31, air inlet duct 33 are combined to form the vent line system, make gas pressure distribution even, the air pressure of each passage 31 is identical.Many the even parallel arrangements of air inlet duct 33, make gas pressure distribution more even.Add-in card 3 is provided with ventilation interface 34, the ventilation tank circuit 32 is communicated with the extraneous air compressibility by ventilation interface 34, be connected with reversal valve between ventilation interface 34 and extraneous air compressibility, air compression system is switched between negative inspiratory pressure state and malleation air blowing state by reversal valve.
The front end face of add-in card 3 is provided with hot-runner device 6.Be tightly connected by sealing ring 7 respectively between add-in card 3 and front mould 1, hot-runner device 6, prevent gas leakage.
Certainly, the above is only preferred embodiment of the present utility model, and the equivalence of doing according to the described structure of the utility model patent claim, feature and principle therefore all changes or modifies, and is included in the utility model patent claim.
Claims (9)
1. plastic cement products negative pressure injection forming mold, include front mould (1), the rear mold (2) matched with front mould (1), rear mold (2) is arranged on front mould (1) rear end face, front mould (1) inside is provided with a plurality of die cavities (10), it is characterized in that: the front end face of described front mould (1) is provided with add-in card (3), offer a plurality of passages (31) corresponding with a plurality of die cavities (10) respectively on add-in card (3), each passage (31) is communicated with corresponding die cavity (10) respectively, between a plurality of passages (31), by the ventilation tank circuit (32), be interconnected, the ventilation tank circuit (32) is communicated with the extraneous air compressibility.
2. plastic cement products negative pressure injection forming mold according to claim 1, it is characterized in that: described front mould (1) inside is provided with a plurality of core rods (4), core rod (4) is arranged on front mould (1) inside with removably, and die cavity (10) is arranged in core rod (4).
3. plastic cement products negative pressure injection forming mold according to claim 2, it is characterized in that: described core rod (4) includes outer core (41) and is arranged at least one combination inner core (42) of outer core (41) front end inside, mutually enclose between combination inner core (42) and outer core (41) and form die cavity (10), the set screw that has been threaded in passage (31) (5), the top, rear end of set screw (5) is pressed on combination inner core (42) foremost, set screw (5) is hollow tubular structures, the two ends of set screw (5) hollow lumen respectively with passage (31), die cavity (10) is communicated with.
4. plastic cement products negative pressure injection forming mold according to claim 3, it is characterized in that: described outer core (41) is threaded in front mould (1) inside by the external screw thread mode.
5. plastic cement products negative pressure injection forming mold according to claim 1, it is characterized in that: the described ventilation tank circuit (32) is arranged on the front end face of add-in card (3), offer many air inlet ducts (33) on the rear end face of add-in card (3), be distributed with a plurality of passages that are communicated with it (31) on every air inlet duct (33).
6. plastic cement products negative pressure injection forming mold according to claim 5, is characterized in that: the even parallel arrangement of described many air inlet ducts (33).
7. plastic cement products negative pressure injection forming mold according to claim 1, it is characterized in that: described add-in card (3) is provided with ventilation interface (34), the ventilation tank circuit (32) is communicated with the extraneous air compressibility by ventilation interface (34), between ventilation interface (34) and extraneous air compressibility, is connected with reversal valve.
8. plastic cement products negative pressure injection forming mold according to claim 1, is characterized in that: between described add-in card (3) and front mould (1), by sealing ring (7), be tightly connected.
9. according to the described plastic cement products negative pressure of claim 1～8 any one injection forming mold, it is characterized in that: the front end face of described add-in card (3) is provided with hot-runner device (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320357230.4U CN203381128U (en) | 2013-06-20 | 2013-06-20 | Negative-pressure injection mould for plastic products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320357230.4U CN203381128U (en) | 2013-06-20 | 2013-06-20 | Negative-pressure injection mould for plastic products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203381128U true CN203381128U (en) | 2014-01-08 |
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ID=49869652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320357230.4U Expired - Lifetime CN203381128U (en) | 2013-06-20 | 2013-06-20 | Negative-pressure injection mould for plastic products |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203381128U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103302813A (en) * | 2013-06-20 | 2013-09-18 | 钟灿秋 | Negative pressure injection molding mold of plastic product and method thereof |
| CN104960167A (en) * | 2015-05-27 | 2015-10-07 | 昆山—邦泰汽车零部件制造有限公司 | Vacuum injection molding die |
| CN107225740A (en) * | 2017-07-05 | 2017-10-03 | 上海小糸车灯有限公司 | The lens die ejecting structure and extrusion method of a kind of inert gas auxiliary ejection |
| CN108357065A (en) * | 2018-04-04 | 2018-08-03 | 安徽安缆模具有限公司 | A kind of mold with stripper |
-
2013
- 2013-06-20 CN CN201320357230.4U patent/CN203381128U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103302813A (en) * | 2013-06-20 | 2013-09-18 | 钟灿秋 | Negative pressure injection molding mold of plastic product and method thereof |
| CN103302813B (en) * | 2013-06-20 | 2016-03-09 | 东莞市积健生物科技有限公司 | Plastic cement products negative pressure injection forming mold and method thereof |
| CN104960167A (en) * | 2015-05-27 | 2015-10-07 | 昆山—邦泰汽车零部件制造有限公司 | Vacuum injection molding die |
| CN107225740A (en) * | 2017-07-05 | 2017-10-03 | 上海小糸车灯有限公司 | The lens die ejecting structure and extrusion method of a kind of inert gas auxiliary ejection |
| CN108357065A (en) * | 2018-04-04 | 2018-08-03 | 安徽安缆模具有限公司 | A kind of mold with stripper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150924 Address after: 523000 Guangdong city of Dongguan province Shijie Zhen Shui Nan Chen Wu Cun industrial area C C02 Patentee after: DONGGUAN JIJIAN BIOTECHNOLOGY Co.,Ltd. Address before: 523000, Guangdong, Dongguan province Shijie Town Road, Chung Chen Industrial Zone bell Sheng mold factory Patentee before: Zhong Canqiu |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 49, Chonghuan East Road, Shijie Town, Dongguan City, Guangdong Province, 523000 Patentee after: Guangdong Jijian Biotechnology Co.,Ltd. Address before: C02, Industrial Zone C, Chenwu Village, Shuinan, Shijie Town, Dongguan City, Guangdong Province, 523000 Patentee before: DONGGUAN JIJIAN BIOTECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140108 |