CN103568200A - Double-color injection moulding method - Google Patents
Double-color injection moulding method Download PDFInfo
- Publication number
- CN103568200A CN103568200A CN201210253864.5A CN201210253864A CN103568200A CN 103568200 A CN103568200 A CN 103568200A CN 201210253864 A CN201210253864 A CN 201210253864A CN 103568200 A CN103568200 A CN 103568200A
- Authority
- CN
- China
- Prior art keywords
- ebonite
- glue
- injection moulding
- flexible glue
- finished product
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1676—Making multilayered or multicoloured articles using a soft material and a rigid material, e.g. making articles with a sealing part
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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
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1615—The materials being injected at different moulding stations
- B29C45/1628—The materials being injected at different moulding stations using a mould carrier rotatable about an axis perpendicular to the opening and closing axis of the moulding stations
-
- 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
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1615—The materials being injected at different moulding stations
- B29C45/1628—The materials being injected at different moulding stations using a mould carrier rotatable about an axis perpendicular to the opening and closing axis of the moulding stations
- B29C2045/1631—The materials being injected at different moulding stations using a mould carrier rotatable about an axis perpendicular to the opening and closing axis of the moulding stations turrets fixed with regard to the machine frame
Abstract
The invention discloses a double-color injection moulding method. According to the double-color injection moulding method, an injection mold, which comprises two cores, a soft glue cavity and a hard glue cavity, and an inversion mechanism used for changing positions of the two cores is employed. The double-color injection moulding method comprises following steps: assembly of the cores with the soft glue cavity and the hard glue cavity is finished before injection moulding; a soft glue and a hard glue are injected via a soft glue inlet and a hard glue inlet respectively; mould unloading is performed after injection moulding; the positions of two cores are changed over via the inversion mechanism; a hard glue semi-finished product is removed and discarded; mould assembly is performed for a second time; the soft glue and the hard glue are injected again at the same time so as to obtain a finished product and another soft glue semi-finished product, wherein the melting point of the hard glue is larger than that of the soft glue, and the difference of the melting points of the hard glue and the soft glue ranges from 10 to 40 DEG. According to the double-color injection moulding method, the soft glue and the hard glue with close melting points are selected, injection moulding of the soft glue is performed firstly, and then injection moulding of the hard glue is performed. Because of the close melting points, after injection moulding of the soft glue, and when injection moulding of the hard glue is performed, the bonding surface of the soft glue and the hard glue is melted, and the soft glue and the hard glue are bonded together for a second time. Bonding force of the products obtained by using the double-color injection moulding method is extremely high.
Description
Technical field
The present invention relates to a kind of injection moulding process, particularly relate to a kind of method of double-shot moulding.
Background technology
Common dual-color forming is all that soft or hard glue is directly one-body molded on double-screw injection molding machine, and generally the restriction due to fusing point and moulding process all adopts the first injection moulding ebonite form of injection moulding flexible glue again.
For flexible glue design outside, ebonite designs at interior product, is generally the housing of large part, can be according to normal mould structure, and core structure is measure-alike, changes different die cavities and carrys out moulding.
But for some ebonites outside, flexible glue is at interior product (such as some small lid, spile), just need to do mould is counter, core is originally done forming cavity, and die cavity is originally done forming core, with special mould structure design, first injection moulding ebonite, then injection moulding flexible glue.
Although this mould structure is counter to be done and finally also can make the product needing, mould is counter do after, mould structure is complicated, cost increases, and to Shooting Technique, the action of folding mould and speed etc. all have high requirements.
Summary of the invention
The technical problem to be solved in the present invention is to cause mould to cause moulding difficulty large in order to overcome double-shot moulding in prior art, and the defect that injection moulding cost is high provides a kind of method of double-shot moulding.
The present invention solves above-mentioned technical problem by following technical proposals:
A method for double-shot moulding, the injection mold that the method adopts comprises the core that two covers are arranged side by side; The flexible glue die cavity being arranged side by side and an ebonite die cavity are provided with soft rubber nozzle on described flexible glue die cavity, on described ebonite die cavity, are provided with the ebonite mouth of a river; And an inversion mechanism for two described cores are changed over, its feature is, the method comprises the steps:
S
1, before injection moulding, first by described core and described flexible glue die cavity and ebonite die cavity matched moulds, from this soft rubber nozzle and this ebonite mouth of a river, inject respectively flexible glue and ebonite simultaneously, after injection moulding completes, form respectively flexible glue portion semi-finished product and ebonite portion semi-finished product;
S
2, after die sinking, by this inversion mechanism, two described cores are swapped left and right;
S
3, retain this flexible glue portion semi-finished product, take out this ebonite portion semi-finished product;
S
4, matched moulds again, then to this soft rubber nozzle and this ebonite mouth of a river, inject flexible glue and ebonite respectively simultaneously, form a finished product and another flexible glue portion semi-finished product;
S
5, carry out successively S after taking out this finished product
2and S
4;
Wherein, the fusing point of described ebonite is higher than the fusing point of this flexible glue, and the difference of both fusing points is 10 degree ~ 40 degree.For each profiled member, be and first injected flexible glue part, rear injection ebonite part.
Wherein, the fusing point of described ebonite is 210 degree ~ 220 degree, and the fusing point of described ebonite is 230 degree ~ 260 degree.
Wherein, described inversion mechanism is one can in perpendicular, rotate the rotating disks of at least 180 degree, and the described core of two covers is fixed on the homonymy of this rotating disk.
In the present invention, above-mentioned optimum condition can be combined on the basis that meets this area general knowledge, obtains each preferred embodiment of the present invention.
Positive progressive effect of the present invention is: flexible glue and ebonite material that the method for the double-shot moulding in the present invention selects fusing point to be close, and first injection moulding flexible glue, then change core injection moulding ebonite.Because soft, ebonite fusing point approach, in flexible glue injection formed, in the time of injection moulding ebonite, due to the relation of temperature, the faying face of flexible glue and ebonite can be melted, then combination again, and the adhesion of the product obtaining is like this very strong.
Accompanying drawing explanation
The stereogram of the stopper of the method manufacture that Fig. 1 is employing double-shot moulding of the present invention.
Fig. 2 is the structural representation of core of the injection mold of the method for double-shot moulding in a preferred embodiment of the present invention.
Fig. 3 is the flexible glue die cavity of injection mold and the structural representation of ebonite die cavity of the method for double-shot moulding in a preferred embodiment of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, provide preferred embodiment of the present invention, to describe technical scheme of the present invention in detail.
Stopper in Fig. 1 has comprised two ebonite portions 100 and a flexible glue portion 200, and ebonite portion 100 is a plane with the faying face of flexible glue portion 200.In the process of double-shot moulding, form the ebonite portion semi-finished product corresponding with ebonite portion 100, and the flexible glue portion semi-finished product corresponding with flexible glue portion 200.
The method of the double-shot moulding in the present embodiment is to adopt fusing point difference to complete injection moulding at flexible glue and the ebonite of 10 degree ~ 40 degree.As shown in Figures 2 and 3, the injection mold for this double-shot moulding comprises two cover cores 1, a flexible glue die cavity 2 and an ebonite die cavity 3.On flexible glue die cavity 2 and ebonite die cavity 3, be respectively equipped with soft rubber nozzle 21 and the ebonite mouth of a river 31.Described soft rubber nozzle 21 is straight channel, and the ebonite mouth of a river 31 is submarine runner.Wherein, in core 1, due to flexible glue structural relation, need to do three slide blocks so that the demoulding is respectively flexible glue slide block 11, flexible glue slide block 12 and flexible glue slide block 13.
This injection mold also comprises an inversion mechanism (not shown) for the described core 1 of two covers is changed over.This transposition structure can adopt the rotating disk that can rotate 180 degree in perpendicular, and two cover cores 1 are fixed on the homonymy of rotating disk, the location swap of dial rotation 180 latter two cores of degree.
The flexible glue adopting in the present embodiment is the Hytrel SB754 model flexible glue that toray is produced, and its forming temperature is 210 ℃-220 ℃.The ebonite adopting is the MB1800 model ebonite that Mitsubishi is produced, and its forming temperature is 250 ℃ of left and right.
Below the method for double-shot moulding is described further: before injection moulding, first by described core 1 and described flexible glue die cavity 2 and ebonite die cavity 3 matched moulds, from this soft rubber nozzle 21 and this ebonite mouth of a river 31, inject respectively flexible glue and ebonite simultaneously, after injection moulding completes, form respectively flexible glue portion semi-finished product and ebonite portion semi-finished product; After die sinking, by this inversion mechanism Rotate 180 degree, two described cores 1 are swapped left and right; Retain this flexible glue portion semi-finished product, eject these ebonite portion semi-finished product abandon by the liftout attachment of injection machine, wherein this injection machine with liftout attachment is prior art, at this, does not repeat.Matched moulds again, then to this ebonite mouth of a river 31 and this soft rubber nozzle 21, inject ebonite and flexible glues respectively simultaneously, form first stopper and another flexible glue portion semi-finished product (belonging to second stopper); By liftout attachment, take out first stopper, carry out successively the step of above-mentioned die sinking transposing core and step that matched moulds injects ebonite and flexible glue after inferior and can obtain required stopper finished product.
Although more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, protection scope of the present invention is limited by appended claims.Those skilled in the art is not deviating under the prerequisite of principle of the present invention and essence, can make various changes or modifications to these embodiments, but these changes and modification all fall into protection scope of the present invention.
Claims (3)
1. a method for double-shot moulding, the injection mold that the method adopts comprises the core that two covers are arranged side by side; The flexible glue die cavity being arranged side by side and an ebonite die cavity are provided with soft rubber nozzle on described flexible glue die cavity, on described ebonite die cavity, are provided with the ebonite mouth of a river; And one for by described two inversion mechanisms that described core changes over, it is characterized in that, the method comprises the steps:
S
1, before injection moulding, first by described core and described flexible glue die cavity and ebonite die cavity matched moulds, from this soft rubber nozzle and this ebonite mouth of a river, inject respectively flexible glue and ebonite simultaneously, after injection moulding completes, form respectively flexible glue portion semi-finished product and ebonite portion semi-finished product;
S
2, after die sinking, by this inversion mechanism, two described cores are swapped left and right;
S
3, retain this flexible glue portion semi-finished product, take out this ebonite portion semi-finished product;
S
4, matched moulds again, then to this soft rubber nozzle and this ebonite mouth of a river, inject flexible glue and ebonite respectively simultaneously, form a finished product and another flexible glue portion semi-finished product;
S
5, carry out successively S after taking out this finished product
2and S
4;
Wherein, the fusing point of described ebonite is higher than the fusing point of this flexible glue, and the difference of both fusing points is 10 degree ~ 40 degree.
2. the method for double-shot moulding as claimed in claim 1, is characterized in that, the fusing point of described ebonite is 210 degree ~ 220 degree, and the fusing point of described ebonite is 230 degree ~ 260 degree.
3. the method for double-shot moulding as claimed in claim 1, is characterized in that, described inversion mechanism is one can in perpendicular, rotate the rotating disks of at least 180 degree, and the described core of two covers is fixed on the homonymy of this rotating disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210253864.5A CN103568200A (en) | 2012-07-20 | 2012-07-20 | Double-color injection moulding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210253864.5A CN103568200A (en) | 2012-07-20 | 2012-07-20 | Double-color injection moulding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103568200A true CN103568200A (en) | 2014-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210253864.5A Pending CN103568200A (en) | 2012-07-20 | 2012-07-20 | Double-color injection moulding method |
Country Status (1)
| Country | Link |
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| CN (1) | CN103568200A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9956815B2 (en) | 2014-07-02 | 2018-05-01 | Modern Packaging Llc | Overmolded cutlery articles |
| US10112329B2 (en) | 2015-11-02 | 2018-10-30 | Modern Packaging Llc | Overmolded disposable cutlery articles |
| CN109435145A (en) * | 2018-12-28 | 2019-03-08 | 深圳亿和模具制造有限公司 | Single width mold realizes dual-color forming device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1864978A (en) * | 2005-05-17 | 2006-11-22 | 昆山渝榕电子有限公司 | Jet molding method for notebook computer envelope |
| CN201389950Y (en) * | 2009-04-14 | 2010-01-27 | 宁波米勒模具制造有限公司 | Injection molding double-color mould |
| CN201516677U (en) * | 2009-10-13 | 2010-06-30 | 乔丰机械制模(深圳)有限公司 | Double-color injection mould |
| CN201677453U (en) * | 2010-04-09 | 2010-12-22 | 海尔集团公司 | Double-color injection mould and injection molding machine |
| CN102139520A (en) * | 2011-03-10 | 2011-08-03 | 浙江洁瓴实业有限公司 | Double-color plastic rod and double injection mould |
-
2012
- 2012-07-20 CN CN201210253864.5A patent/CN103568200A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1864978A (en) * | 2005-05-17 | 2006-11-22 | 昆山渝榕电子有限公司 | Jet molding method for notebook computer envelope |
| CN201389950Y (en) * | 2009-04-14 | 2010-01-27 | 宁波米勒模具制造有限公司 | Injection molding double-color mould |
| CN201516677U (en) * | 2009-10-13 | 2010-06-30 | 乔丰机械制模(深圳)有限公司 | Double-color injection mould |
| CN201677453U (en) * | 2010-04-09 | 2010-12-22 | 海尔集团公司 | Double-color injection mould and injection molding machine |
| CN102139520A (en) * | 2011-03-10 | 2011-08-03 | 浙江洁瓴实业有限公司 | Double-color plastic rod and double injection mould |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9956815B2 (en) | 2014-07-02 | 2018-05-01 | Modern Packaging Llc | Overmolded cutlery articles |
| US10112329B2 (en) | 2015-11-02 | 2018-10-30 | Modern Packaging Llc | Overmolded disposable cutlery articles |
| CN109435145A (en) * | 2018-12-28 | 2019-03-08 | 深圳亿和模具制造有限公司 | Single width mold realizes dual-color forming device and method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160308 Address after: 200335 Shanghai city Changning District Admiralty Road No. 633 building A Room 201 Applicant after: SIMCom Wireless Technology (Shanghai) Co., Ltd. Address before: 200335 Shanghai city Changning District Admiralty Road No. 633 Applicant before: Shanghai SIMCom Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140212 |