CN105034301A - Injection-mold rapid-cooling and rapid-heating product welding line removing method - Google Patents
Injection-mold rapid-cooling and rapid-heating product welding line removing method Download PDFInfo
- Publication number
- CN105034301A CN105034301A CN201510538485.4A CN201510538485A CN105034301A CN 105034301 A CN105034301 A CN 105034301A CN 201510538485 A CN201510538485 A CN 201510538485A CN 105034301 A CN105034301 A CN 105034301A
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- CN
- China
- Prior art keywords
- mold
- temperature
- injection
- rapid
- plastic
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
Abstract
The invention discloses an injection-mold rapid-cooling and rapid-heating product welding line removing method. The injection-mold rapid-cooling and rapid-heating product welding line removing method includes the steps that the temperature of a mold rapidly reaches higher than 160 DEG C in the manner that high-temperature compressed steam is injected into a waterway of the mold in the injection molding stage and the pressure maintaining stage, the temperature of the mold is kept, and a whole cavity is fully filled with plastic in an injected manner at the temperature; and cold water is injected into the waterway in the cooling stage to rapidly reduce the temperature of the mold, the plastic is solidified and molded into a product, the mold is opened, and a workpiece is taken out. By means of the method, the temperature of the injection mold is actively and acutely changed in each mold production cycle; and when the temperature of the mold is higher than the glass state temperature of the plastic, namely 160 DEG C, the plastic flows in the mold and is kept at the temperature all the time, the temperature of plastic flow at the front end is kept high, and when two streams of plastic are combined, the combination effect is quite good, and welding lines cannot be generated.
Description
Technical field
The invention belongs to injection mold technical field, specifically a kind of injection mold rapid heat cycle eliminates the method for product weld bond.
Background technology
Current automotive trim air outlet panel mold adopts traditional handicraft manufacture, conventional injection molding method and water route and auxiliary equipment cause weld bond in appearance to avoid, follow-up plating lacquer spraying technique can only be adopted to hide, cause the various complexity of product sequence, product rejection rate is high, energy consumption is large, pollution is large.
It is that each circulation can be divided into following several stages substantially: 1, injection moulding, pressurize that mould is produced in injection cycle; 2, cool; 3, die sinking pickup; 4, matched moulds, and then be recycled to injection phase carry out the next one circulation.More than when the water route of traditional moulds is designed, 4 demands temperature are as far as possible constant, but the temperature of front end plastics lowers gradually when plastics flow in a mold, because the decline docking location of temperature forms an obvious visual object line when two strands, front end plastics are joined, be called weld bond, cause product appearance defect, intensity reduces.
Summary of the invention
The present invention is directed to prior art deficiency, there is provided a kind of injection mold rapid heat cycle to eliminate the method for product weld bond, realize high glaze in appearance, and weldless line defect, avoid the follow-up plating, the lacquer spraying technique that are used for hiding weld bond, reach the object of energy-conserving and environment-protective, decreasing pollution.
In order to solve the problems of the technologies described above, the present invention is solved by following technical proposals: a kind of injection mold rapid heat cycle eliminates the method for product weld bond, make rapidly mold temperature reach more than 160 DEG C in the water route being injected mould when being included in injection moulding, packing stage by High temperature compressed steam, keep mold temperature also plastics to be filled whole die cavity at such a temperature; In water route, inject cold water when cooling stage, reduce rapidly mold temperature and make plastics coagulation forming become product die sinking pickup.Adopt and make injection mold in each mould production cycle inner mold temperature acute variation initiatively in this way, when mold temperature higher than plastics vitrification point that is more than 160 DEG C time, plastics flow and remain this temperature in mould, front end stream temperature keeps high temperature, can not produce weld bond when two stock materials are joined in conjunction with effect is fairly good.
In technique scheme, preferably, after completing die sinking pickup, be blown into compressed air in the matched moulds stage in mould, the High temperature compressed steam that reinjects after blowing off the water droplet in water route improves mold temperature, carries out next one circulation.Before entering next circulation, the water droplet first blown off in water route makes to control whole mould more fast and easily when being filled with compressed steam raising mold temperature and remains on identical temperature.
The present invention compared with prior art, there is following beneficial effect: adopt and make injection mold in each mould production cycle inner mold temperature acute variation initiatively in this way, when mold temperature higher than plastics vitrification point that is more than 160 DEG C time, plastics flow and remain this temperature in mould, front end stream temperature keeps high temperature, can not produce weld bond when two stock materials are joined in conjunction with effect is fairly good.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in further detail: a kind of injection mold rapid heat cycle eliminates the method for product weld bond, make rapidly mold temperature reach more than 160 DEG C in the water route being injected mould when being included in injection moulding, packing stage by High temperature compressed steam, keep mold temperature also plastics to be filled whole die cavity at such a temperature; In water route, inject cold water when cooling stage, reduce rapidly mold temperature and make plastics coagulation forming become product die sinking pickup.Adopt and make injection mold in each mould production cycle inner mold temperature acute variation initiatively in this way, when mold temperature higher than plastics vitrification point that is more than 160 DEG C time, plastics flow and remain this temperature in mould, front end stream temperature keeps high temperature, can not produce weld bond when two stock materials are joined in conjunction with effect is fairly good.
After completing die sinking pickup, be blown into compressed air in the matched moulds stage in mould, the High temperature compressed steam that reinjects after blowing off the water droplet in water route improves mold temperature, carries out next one circulation.Before entering next circulation, the water droplet first blown off in water route makes to control whole mould more fast and easily when being filled with compressed steam raising mold temperature and remains on identical temperature.
Compared with prior art, the invention has the beneficial effects as follows: the product adopting rapid heat cycle injection mold technology to produce can reach the object of high light weldless line, decreases follow-up plating, lacquer spraying technique, reduces energy consumption, decrease pollution; Adopt the product of rapid heat cycle injection mold technology production owing to there is no weld bond, improve Total Product intensity; The product adopting rapid heat cycle injection mold technology to produce essentially eliminates the internal stress that product produces because temperature is different, decreases the distortion of product; Adopt rapid heat cycle injection mold technology, due to when plastics flow in mould due to high temperature, remain a fluid state, decrease shearing force have significant help to the plastics containing high glass fibre, the phenomenon that fiberglass surfacing appears in one's mind can not be produced.
Claims (2)
1. the method for an injection mold rapid heat cycle elimination product weld bond, it is characterized in that: make rapidly mold temperature reach more than 160 DEG C in the water route being injected mould when being included in injection moulding, packing stage by High temperature compressed steam, keep mold temperature also plastics to be filled whole die cavity at such a temperature; In water route, inject cold water when cooling stage, reduce rapidly mold temperature and make plastics coagulation forming become product die sinking pickup.
2. a kind of injection mold rapid heat cycle as claimed in claim 1 eliminates the method for product weld bond, it is characterized in that: after completing die sinking pickup, in mould, compressed air is blown in the matched moulds stage, the High temperature compressed steam that reinjects after blowing off the water droplet in water route improves mold temperature, carries out next one circulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510538485.4A CN105034301A (en) | 2015-08-28 | 2015-08-28 | Injection-mold rapid-cooling and rapid-heating product welding line removing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510538485.4A CN105034301A (en) | 2015-08-28 | 2015-08-28 | Injection-mold rapid-cooling and rapid-heating product welding line removing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105034301A true CN105034301A (en) | 2015-11-11 |
Family
ID=54441547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510538485.4A Pending CN105034301A (en) | 2015-08-28 | 2015-08-28 | Injection-mold rapid-cooling and rapid-heating product welding line removing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105034301A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107042605A (en) * | 2016-02-05 | 2017-08-15 | 汉达精密电子(昆山)有限公司 | The preparation method of thermoplastic composite product and its corresponding product |
| CN107662352A (en) * | 2016-07-29 | 2018-02-06 | 汉达精密电子(昆山)有限公司 | The preparation method of thermoplastic composite product and its corresponding product |
| CN114514284A (en) * | 2019-10-18 | 2022-05-17 | 本田技研工业株式会社 | Resin composition, resin molded article comprising same, and method for producing resin molded article |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104669492A (en) * | 2015-02-03 | 2015-06-03 | 四川佳世特橡胶有限公司 | Super-large energy-saving and environment-friendly rubber vulcanizing machine |
| CN104669507A (en) * | 2013-12-02 | 2015-06-03 | 昆山市山山塑胶制品厂 | Molding technology of projectile precision guidance antenna primary and secondary mirrors |
| CN104690930A (en) * | 2013-12-10 | 2015-06-10 | 深圳信息职业技术学院 | Steam heating type rapid heat cycle molding injection mold |
-
2015
- 2015-08-28 CN CN201510538485.4A patent/CN105034301A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104669507A (en) * | 2013-12-02 | 2015-06-03 | 昆山市山山塑胶制品厂 | Molding technology of projectile precision guidance antenna primary and secondary mirrors |
| CN104690930A (en) * | 2013-12-10 | 2015-06-10 | 深圳信息职业技术学院 | Steam heating type rapid heat cycle molding injection mold |
| CN104669492A (en) * | 2015-02-03 | 2015-06-03 | 四川佳世特橡胶有限公司 | Super-large energy-saving and environment-friendly rubber vulcanizing machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107042605A (en) * | 2016-02-05 | 2017-08-15 | 汉达精密电子(昆山)有限公司 | The preparation method of thermoplastic composite product and its corresponding product |
| CN107662352A (en) * | 2016-07-29 | 2018-02-06 | 汉达精密电子(昆山)有限公司 | The preparation method of thermoplastic composite product and its corresponding product |
| CN114514284A (en) * | 2019-10-18 | 2022-05-17 | 本田技研工业株式会社 | Resin composition, resin molded article comprising same, and method for producing resin molded article |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151111 |
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| RJ01 | Rejection of invention patent application after publication |