CN104626477A - Resin forming device with air-exhaust insert - Google Patents
Resin forming device with air-exhaust insert Download PDFInfo
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- CN104626477A CN104626477A CN201410562158.8A CN201410562158A CN104626477A CN 104626477 A CN104626477 A CN 104626477A CN 201410562158 A CN201410562158 A CN 201410562158A CN 104626477 A CN104626477 A CN 104626477A
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- resin
- mold insert
- resin molding
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- mould
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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
- B29C45/26—Moulds
- B29C45/34—Moulds having venting means
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention relates to a resin forming device, a resin forming method, and a resin forming product for lamp fixtures. The resin forming device (10) comprises a first mold (11) used for forming the surface (1a) of a resin forming product (1), and a second mold (12) used for forming the back surface (1b) of the resin forming product (1). A chamber (13) is formed between the first mold (11) and the second mold (12). At a part corresponding to the resin assembly part of the chamber (13), an air-exhaust insert (15) is arranged at the second mold (12). The air-exhaust insert (15) is formed through multiple empiecements (16) configured to abut against one another. A gap (21) is formed between every two adjacent empiecements (16).
Description
Technical field
The present invention relates to the resin molding apparatus being provided with exhaust mold insert, use the manufacturing process of this device, and the light fixture resin forming product using this device to be shaped.
Background technology
Directly form aluminium-vapour deposition layer occasion in the appearance of light fixture resin forming product, owing to not arranging priming coat, the weld mark of appearance is easily obvious.Such as, as shown in Figure 7, in the resin molding apparatus 53 using steel die 51,52, gas is enclosed in the junction portion of chamber 55 by molten resin 54, encloses gas and produces dense weld mark 56 on the surface of resin forming product and the back side.So, in the past, as shown in Figure 8, following resin molding apparatus 59 is proposed: molding die overleaf, be provided with the mold insert 57 be made up of aeration metal material, make the gas remained in chamber 55 lead to the porous communicating passage 58 of mold insert 57, be discharged to exterior thereto, make weld mark thin out or disappear.
In patent document 1, record following technology: the mold insert be made up of aeration metal material is assembled in shaping surface mould, make the gas in chamber by the porous communicating passage of mold insert by decompressor, be attracted to exterior thereto.In patent document 2, record following technology: making nitrogen from exterior thereto by having the mold insert of aeration, being ejected into chamber interior, because of gas jet pressure, molten resin being crimped with chamber inner wall face, to disappear shrinkage cavity from resin forming product surface solution.
[patent document 1] Japanese Unexamined Patent Publication 2000-280304 publication
[patent document 2] Japanese Unexamined Patent Publication 2004-330676 publication
But, because the pyroconductivity of the thermal conductivity ratio steel die material of aeration metal material is low, therefore, if according to Fig. 8 resin molding apparatus 59, in refrigerating work procedure, aeration metal material is difficult to cooling, the temperature of the temperature specific surface shaping dies 51 of mold insert 57 is high, when the molten resin 54 in chamber 55 solidifies, compared with the mold insert 57 of high temperature side, first from shaping surface mould 51 demoulding, there is the problem that shrinkage cavity 60 easily occurs on the surface of resin forming product or appearance in low temperature side.Again, the mold insert 57 be made up of aeration metal material easily blocks porous communicating passage 58 in the mirror grinding operation of chamber 13, is difficult to repair blocking, also there is mold repair and maintain another bothersome problem.
Summary of the invention
So, the object of the invention is to, provide and can prevent weld mark and shrinkage cavity and the resin molding apparatus easily carrying out mold repair, resin molding method and resin forming product.
To achieve these goals, the invention provides following such means (technical scheme).
(1) resin molding apparatus, is characterized in that:
Above-mentioned resin molding apparatus comprises:
First mould, the surface of shaping resin formed products;
Second mould, the back side of shaping resin formed products;
Chamber, is formed between the first mould and the second mould; And
Exhaust mold insert, is discharged to exterior thereto by the gas remaining in chamber interior;
Above-mentioned exhaust mold insert comprises the multiple empiecements abutted mutually, between adjacent empiecement, is formed and makes the inside and outside areola be communicated with of chamber.
(2) according to the resin molding apparatus that technique scheme (1) is recorded, it is characterized in that:
Above-mentioned exhaust mold insert, in the position corresponding with the junction portion of the molten resin being filled to chamber, is assembled in the second mould.
(3) according to the resin molding apparatus that technique scheme (2) is recorded, it is characterized in that:
Above-mentioned exhaust mold insert is by the back side in multiple U-shaped of empiecement partial plastic forming resin forming product or the cross sectional shape portion of V-shaped.
(4) resin molding method, is characterized in that:
Use the resin molding apparatus that any one of technique scheme (1) ~ (3) is recorded, by the appearance of above-mentioned first die forming light fixture resin forming product, by the non-appearance face of above-mentioned second die forming light fixture resin forming product, be partially formed lines trace by the areola of above-mentioned exhaust mold insert in non-appearance face.
(5) according to the resin molding method that technique scheme (4) is recorded, it is characterized in that:
To the chamber injection moulding crystalline resin of above-mentioned resin molding apparatus.
(6) a light fixture resin forming product, is characterized in that:
Use the resin molding apparatus that any one of technique scheme (1) ~ (3) is recorded, comprise by the appearance of above-mentioned first die forming, and by the non-appearance face of above-mentioned second die forming, non-appearance face is comprising in local the lines trace formed by the areola of above-mentioned exhaust mold insert.
The following describes effect of the present invention:
According to the present invention, form exhaust mold insert with multiple empiecement, between adjacent empiecement, form areola, therefore, the gas remaining in chamber interior can be made to be discharged to exterior thereto by areola, to disappear weld mark from resin forming product solution, form mold insert and mould by the mold materials roughly equal by pyroconductivity, solution disappears both temperature difference, resin forming product can also be made to reduce shrinkage cavity occur, when areola blocking occasion etc., by decomposing empiecement, there is the effect easily carrying out mold repair maintenance.
Accompanying drawing explanation
Fig. 1 is the sectional view of the resin molding apparatus representing the present invention one embodiment.
Fig. 2 is II-II line sectional view of Fig. 1.
Fig. 3 is the stereogram of the exhaust mold insert of the resin molding apparatus representing Fig. 1.
Fig. 4 is the front elevation of the light fixture resin forming product using the resin molding apparatus of Fig. 1 to be shaped.
Fig. 5 is that V-V line cross section of the Fig. 4 of the manufacturing process representing light fixture resin forming product is quite schemed.
Fig. 6 is the A portion back view of the Fig. 4 of the wire trace representing light fixture resin forming product.
Fig. 7 is the sectional view of the resin molding apparatus represented in the past.
Fig. 8 is the sectional view of another resin molding apparatus represented in the past.
In figure, symbolic significance is as follows:
1 resin forming product
1a surface or appearance
The 1b back side or non-appearance face
6 lines traces
10 resin molding apparatus
11 first moulds
12 second moulds
13 chambers
16 empiecements
21 areolas
Detailed description of the invention
Below, with reference to accompanying drawing, the invention process form is described.In following embodiment, although to inscape, kind, combination, shape, to be oppositely arranged etc. and to have done various restriction, these only exemplify, and the present invention is not limited thereto.
Resin molding apparatus 10 shown in Fig. 1, Fig. 2 comprises steel first mould 11 of the surperficial 1a of shaping resin formed products 1, and steel second mould 12 of the back side 1b of shaping resin formed products 1.Between the first mould 11 and the second mould 12, form chamber 13, in the position corresponding with the junction portion of the molten resin 14 being injected into chamber 13, form recess 12a at the second mould 12.Further, exhaust mold insert 15 is arranged on recess 12a, and by this mold insert 15, the gas G (representing with arrow) remaining in chamber 13 inside is discharged to the outside of chamber 13.
As shown in Figure 3, be vented mold insert 15 to be configured to be decomposed into the multiple empiecements 16 abutted mutually further.Each empiecement 16 forms rectangle with the first mould 11 with the steel of the pyroconductivity of the roughly the same degree of the second mould 12 with having, and at one end face slightly forms abutting part 17 in highland, is provided with otch 18 in lower edge.Comprising the empiecement 16 at position of abutting part 17, have one or more cross-drilled hole 19, by inserting the pin 20 of break-through to cross-drilled hole 19, multiple empiecement 16 is assembled into integrally.In the assembled state, between two adjacent empiecements 16, because abutting part 17 forms areola 21, areola 21 is communicated with the exhaust passage 22 (with reference to Fig. 1) of the second mould 12 by otch 18, and exhaust passage 22 is connected with not shown attraction source.
As shown in Figure 2, in this embodiment, areola 21 is formed as the cubic ring-type surrounding abutting part 17.Among four side faces of empiecement 16, one is exposed to chamber 13, with the second mould 12 identical faces in form mold insert forming face 16a.Further, by the local of the back side 1b of mold insert forming face 16a shaping resin formed products 1, the gas G in chamber 13 is attracted from the areola 21 between two mold insert forming face 16a.Preferred 0.01mm ~ the 0.1mm of height of abutting part 17.If the height of abutting part 17 is less than 0.01mm, then areola 21 became narrow, sometimes brought the exhaust of chamber 13 and hindered.If the height of abutting part 17 is more than 0.1mm, then molten resin 14 enters areola 21, easily blocks.
According to the resin molding apparatus 10 of above-mentioned formation, the gas G in the resin junction portion remaining in chamber 13 can be made to be discharged to chamber 13 by the areola 21 of exhaust mold insert 15 outside, disappear weld mark from the surperficial 1a solution of resin forming product 1.In addition, the mold insert formed from by aeration metal material is different, empiecement 16 can be formed with the steel of the pyroconductivity with the first mould 11, second mould 12 same degree, reduce the temperature difference of the first mould 11, second mould 12 in refrigerating work procedure and empiecement 16, to disappear shrinkage cavity from the surperficial 1a solution of resin forming product 1.Further, areola 21 blocks occasion etc. in the mirror grinding operation of chamber 13, by taking out exhaust mold insert 15 from the second mould 12, decomposing empiecement 16, also can easily solution to disappear blocking.
The resin molding apparatus 10 of this embodiment can use suitably in the injection molded of light fixture resin forming product 1.Fig. 4 illustrates the extension of lamps apparatus for vehicle as light fixture resin forming product 1.The surperficial 1a of this extension 1 becomes towards the appearance outside car body, and back side 1b (with reference to Fig. 5) becomes the non-appearance face towards body inner side.At appearance 1a, the operation after injection molded, not by priming coat, directly processes aluminium-vapour deposition layer.Also can not arrange aluminium-vapour deposition layer, raw material look represents same as before at appearance 1a.
The moulding material of extension 1 can use the resin being suitable for the direct evaporation of aluminium, such as, and PBT (polybutylene terephthalate) resin or PC (Merlon) resin etc.By above-mentioned resin, the framework 2 of extension 1 is configured as cross section U-shaped or V-shaped, forms the opening portion 3 that the light injection part of lamp unit is exposed in the inner side of framework 2.At the outer peripheral edge of framework 2 setting gate part 5, at the non-appearance face 1b of framework 2, because the areola 21 being vented mold insert 15 forms lines trace 6.The setting position of exhaust mold insert 15 is not particularly limited, and can be set in the junction position of the molten resin in the vicinity of gate part 5, the periphery etc. of opening portion 3, chamber 13.
Fig. 5 represents the resin molding method of extension 1.When extension 1 injection molded, first, prepare the first mould 11 and the second mould 12, exhaust mold insert 15 is assembled into the recess 12a of the second mould 12.Then, by the first mould 11 and the second mould 12 matched moulds, to chamber 13 injection moulding crystalline resin.Further, the appearance 1a of the extension 1 that is shaped by the first mould 11, the non-appearance face 1b of the extension 1 that is shaped by the second mould 12, be partially formed lines trace 6 (with reference to Fig. 6) by the areola 21 of exhaust mold insert 15 at non-appearance face 1b.Then, after the cooling set time, to the first mould 11 and the second mould 12 die sinking, extension 1 is taken out.
According to resin molding method and the resin forming product of this embodiment, to disappear weld mark and shrinkage cavity from the appearance 1a solution of extension 1, the appearance looks elegant of lamps apparatus for vehicle can be made.Especially, between two gate parts 5, exhaust mold insert 15 is configured in 1b side, non-appearance face, therefore, residual gas can be discharged swimmingly from the resin junction portion of the U-shaped of chamber 13 or V-shaped, the appearance 1a turned back in shape portion of the framework that is shaped 2 attractive in appearancely.In addition, crystalline resin viscosity is low, the concaveconvex shape of easy replicated fine, therefore, although the mirror grinding of chamber 13 appearance 1a side and 1b side, non-appearance face both sides all necessary, with mirror grinding blocking mold insert forming face 16a by decompose empiecement 16 repair rapidly.
Resin molding apparatus of the present invention and resin molding method are not limited to extension, also can be applicable to the lamp body of lamps apparatus for vehicle, speculum, lid etc., also can be applied to other various resin forming product.The injection molded of light fixture lamp body can use the resin material of PP (polypropylene), ABS (propylene-nitrile butadiene-styrene terpolymer), AS (styrene-acrylonitrile) etc.Again, such as, exhaust mold insert etc. is set in the many places of large mold, also can not departing from the scope of the inventive concept, suitably enforcement is changed to the shape of each several part or structure.
Claims (6)
1. a resin molding apparatus, is characterized in that:
Above-mentioned resin molding apparatus comprises:
First mould, the surface of shaping resin formed products;
Second mould, the back side of shaping resin formed products;
Chamber, is formed between the first mould and the second mould; And
Exhaust mold insert, is discharged to exterior thereto by the gas remaining in chamber interior;
Above-mentioned exhaust mold insert comprises the multiple empiecements abutted mutually, between adjacent empiecement, is formed and makes the inside and outside areola be communicated with of chamber.
2. resin molding apparatus according to claim 1, is characterized in that:
Above-mentioned exhaust mold insert, in the position corresponding with the junction portion of the molten resin being filled to chamber, is assembled in the second mould.
3. resin molding apparatus according to claim 2, is characterized in that:
Above-mentioned exhaust mold insert is by the back side in multiple U-shaped of empiecement partial plastic forming resin forming product or the cross sectional shape portion of V-shaped.
4. a resin molding method, is characterized in that:
Use the resin molding apparatus that any one of claim 1 ~ 3 is recorded, by the appearance of above-mentioned first die forming light fixture resin forming product, by the non-appearance face of above-mentioned second die forming light fixture resin forming product, be partially formed lines trace by the areola of above-mentioned exhaust mold insert in non-appearance face.
5. resin molding method according to claim 4, is characterized in that:
To the chamber injection moulding crystalline resin of above-mentioned resin molding apparatus.
6. a light fixture resin forming product, is characterized in that:
The resin molding apparatus using any one of claim 1 ~ 3 to record, comprises by the appearance of above-mentioned first die forming, and by the non-appearance face of above-mentioned second die forming, non-appearance face is comprising in local the lines trace formed by the areola of above-mentioned exhaust mold insert.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-230100 | 2013-11-06 | ||
| JP2013230100A JP6353211B2 (en) | 2013-11-06 | 2013-11-06 | Resin molding equipment with venting insert |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104626477A true CN104626477A (en) | 2015-05-20 |
Family
ID=53193393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410562158.8A Pending CN104626477A (en) | 2013-11-06 | 2014-10-21 | Resin forming device with air-exhaust insert |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6353211B2 (en) |
| CN (1) | CN104626477A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109648799A (en) * | 2019-01-29 | 2019-04-19 | 深圳市金彩虹精密制造股份有限公司 | Excessive injection molding means for correcting |
| CN110802210A (en) * | 2019-11-12 | 2020-02-18 | 珠海市润星泰电器有限公司 | Mould with exhausting function |
| CN111421739A (en) * | 2019-01-09 | 2020-07-17 | 本田技研工业株式会社 | Air pressure injection molding device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106393600A (en) * | 2016-05-19 | 2017-02-15 | 深圳天珑无线科技有限公司 | Die core with exhaust structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202862535U (en) * | 2012-09-26 | 2013-04-10 | 大连大显高木模具有限公司 | Automobile tail wing mold with sliding block tunnel gate and flow passage exhaust structure |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11254491A (en) * | 1998-03-09 | 1999-09-21 | Tensho Electric Industries Co Ltd | Mold |
| JP2000084939A (en) * | 1998-09-14 | 2000-03-28 | Polyplastics Co | Light reflecting part and mold for molding the same |
| JP2000280304A (en) * | 1999-03-30 | 2000-10-10 | Suzuki Motor Corp | Injection molding machine for resin |
| JP2001096556A (en) * | 1999-10-04 | 2001-04-10 | Kouno Plastic Kogyo Kk | Cavity part constituting component, mold for molding resin, resin molding, method for molding resin and plate piece for cavity part constituting component |
| JP2002127145A (en) * | 2000-10-24 | 2002-05-08 | Fuji Photo Film Co Ltd | Insert structure for mold |
| JP5840936B2 (en) * | 2011-11-25 | 2016-01-06 | 株式会社小糸製作所 | Vehicular lamp and manufacturing method thereof |
-
2013
- 2013-11-06 JP JP2013230100A patent/JP6353211B2/en active Active
-
2014
- 2014-10-21 CN CN201410562158.8A patent/CN104626477A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202862535U (en) * | 2012-09-26 | 2013-04-10 | 大连大显高木模具有限公司 | Automobile tail wing mold with sliding block tunnel gate and flow passage exhaust structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111421739A (en) * | 2019-01-09 | 2020-07-17 | 本田技研工业株式会社 | Air pressure injection molding device |
| CN111421739B (en) * | 2019-01-09 | 2022-01-04 | 本田技研工业株式会社 | Air pressure injection molding device |
| CN109648799A (en) * | 2019-01-29 | 2019-04-19 | 深圳市金彩虹精密制造股份有限公司 | Excessive injection molding means for correcting |
| CN110802210A (en) * | 2019-11-12 | 2020-02-18 | 珠海市润星泰电器有限公司 | Mould with exhausting function |
| CN110802210B (en) * | 2019-11-12 | 2021-07-20 | 珠海市润星泰电器有限公司 | Mould with exhausting function |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015089637A (en) | 2015-05-11 |
| JP6353211B2 (en) | 2018-07-04 |
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Application publication date: 20150520 |
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