JPH01226314A - Preparation of resin molded item - Google Patents
Preparation of resin molded itemInfo
- Publication number
- JPH01226314A JPH01226314A JP5429488A JP5429488A JPH01226314A JP H01226314 A JPH01226314 A JP H01226314A JP 5429488 A JP5429488 A JP 5429488A JP 5429488 A JP5429488 A JP 5429488A JP H01226314 A JPH01226314 A JP H01226314A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- resin
- molten resin
- molded item
- cured
- 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
Links
- 229920005989 resin Polymers 0.000 title claims abstract description 60
- 239000011347 resin Substances 0.000 title claims abstract description 60
- 238000002360 preparation method Methods 0.000 title description 3
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 239000006082 mold release agent Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 abstract description 6
- 238000005507 spraying Methods 0.000 abstract description 6
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 229920001296 polysiloxane Polymers 0.000 abstract description 2
- 230000000994 depressogenic effect Effects 0.000 abstract 1
- 125000001153 fluoro group Chemical group F* 0.000 abstract 1
- 238000000034 method Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 238000000465 moulding Methods 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 238000007751 thermal spraying Methods 0.000 description 3
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000007666 vacuum forming Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Landscapes
- Moulding By Coating Moulds (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、溶射技術を用いた樹脂成形品の製造方法に関
するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method of manufacturing a resin molded article using thermal spraying technology.
（従来の技術）
従来、車両用の飾り部材等の樹脂成形品を製造する場合
には、一般に真空成形法やスラッシュ成形法が用いられ
ていた。(Prior Art) Conventionally, when manufacturing resin molded products such as decorative members for vehicles, vacuum forming methods and slush molding methods have generally been used.
真空成形法は、樹脂シートを型のＦ面に固定した状態で
加熱軟化させ、その後に樹脂シートと型の間隙を真空に
してシートを型形状に倣うように変形させ、その冷却硬
化を待って真空を解除して製品を取り出すといったもの
であった。In the vacuum forming method, the resin sheet is fixed to the F side of the mold and softened by heating, then the gap between the resin sheet and the mold is evacuated to deform the sheet to follow the shape of the mold, and the sheet is cooled and hardened. This involved releasing the vacuum and removing the product.
また、スラー、シュ成形法は、加熱した金型に樹脂素材
を充填して溶融した樹脂素材を金型面に薄く張り付かせ
、その張り付いた溶融樹脂素材の冷却硬化を待って金型
から取り出すといったものである。なお、このようなス
ラッシュ成形法の技術としては１例えば特開昭８０−１
５７８１８号公報等に開示されている。In addition, in the slurr/shu molding method, a heated mold is filled with a resin material, the molten resin material is thinly stuck to the mold surface, and the stuck molten resin material is allowed to cool and harden before being removed from the mold. It's like taking it out. Note that such slush molding techniques include 1, for example, Japanese Patent Application Laid-Open No. 80-1
It is disclosed in Japanese Patent No. 57818 and the like.
（発明が解決しようとする課題）
しかしながら、前者にあっては、型側に鋭い凹凸形状が
あった場合にその形状を正確に再現することが出来ず、
転写性が悪いという欠点があった。このため、意匠上お
よび設計玉の自由度が低かった。これは鋭い凹凸形状が
あった場合に、樹脂シートの隅々に真空作用を働かせに
〈くなるということと、凹凸部分で樹脂シートが破れ易
くなるということが主な原因となっていた。(Problem to be solved by the invention) However, in the former case, if there is a sharp uneven shape on the mold side, it is not possible to accurately reproduce the shape.
It had a drawback of poor transferability. For this reason, the degree of freedom in terms of design and design of balls was low. The main causes of this are that when there is a sharp uneven shape, the vacuum action is applied to every corner of the resin sheet, and the resin sheet is easily torn at the uneven parts.
また、後者にあっては、型自体を高温に加熱しなければ
ならないため、金型を用いざるを得ず、そのため型製作
費が嵩むという欠点があった。さらにそれに加え、一つ
の製品を形成するのに多くの時間を要するという問題が
あった。Moreover, in the latter case, since the mold itself must be heated to a high temperature, a metal mold must be used, which has the disadvantage of increasing mold manufacturing costs. In addition to this, there is a problem in that it takes a lot of time to form one product.
なお、直接的な樹脂成形品の製造技術ではないが、成形
型の表面に溶射によって金属皮膜を形成する技術として
は特開昭５５−１５８８８号公報や同５７−１５９１２
号公報に開示されるようなものも案出されている。Although it is not a direct manufacturing technology for resin molded products, techniques for forming a metal film on the surface of a mold by thermal spraying are disclosed in JP-A-55-15888 and JP-A-57-15912.
A method disclosed in the above publication has also been devised.
本発明の目的は、低コストで、かつ、短時間で所望の樹
脂成形品を製造出来る方法を提供することである。An object of the present invention is to provide a method that can produce desired resin molded products at low cost and in a short time.
（課題を解決するための手段）
本発明は、前述した課題を解決するための手段として、
樹脂成形品１の形状に対応する型２を設け、類型２に取
り外し可能に支柱３を突出させておき、前記型２に離型
剤４を塗布した後に溶融樹脂５を吹き付け、該溶融樹脂
５をその硬化を待って前記支柱３と共に型２から取り出
すようにしたものである。(Means for Solving the Problems) The present invention provides the following as means for solving the problems described above.
A mold 2 corresponding to the shape of the resin molded product 1 is provided, a support 3 is removably protruded from the mold 2, a mold release agent 4 is applied to the mold 2, and then a molten resin 5 is sprayed. After it has hardened, it is taken out from the mold 2 together with the pillar 3.
（作 用）
このように構成したことにより、型２の形状をある程度
複雑にしても、溶融樹脂５が型２の隅々にまで行きわた
り、その状態で即時に硬化するため、型２の形状は複雑
な工程を踏むことなく正確に転写されるようになる。そ
して溶融樹脂５が硬化する際の収縮は支柱３によって押
えられ、溶融樹脂５の吹き付は途中での型２からの剥離
は無くなる。(Function) With this configuration, even if the shape of the mold 2 is complicated to some extent, the molten resin 5 will spread to every corner of the mold 2 and will instantly harden in that state, so that the shape of the mold 2 will remain the same. can be accurately transcribed without going through complicated processes. The shrinkage of the molten resin 5 when it hardens is suppressed by the struts 3, and the molten resin 5 does not peel off from the mold 2 during the spraying process.
（実施例）
以下、本発明の一実施例を第１図および第２図に従って
説明し、その応用例を第３図に基づいて説明する。なお
、以下で示す実施例においては、造形する樹脂成形品ｌ
は鋭い凹凸形状を有する本体部分６と、この本体部分６
に取付けられる補強リブ７や取付は座８等の機能部品と
から成る。(Example) An example of the present invention will be described below with reference to FIGS. 1 and 2, and an example of its application will be described with reference to FIG. 3. In addition, in the examples shown below, the resin molded product l
The main body portion 6 has a sharp uneven shape, and the main body portion 6 has a sharp uneven shape.
It consists of reinforcing ribs 7 and functional parts such as a seat 8 and the like.
第１図および第２図において、２は樹脂成形品ｌを造形
するための型であり、この型２は１００℃以上の耐熱性
を有したエポキシ樹脂等の樹脂材により、本体部分６の
形状に対応するように形成しておく、なお、型２はこの
ように樹脂材によって形成することにより、低コストで
かつ容易な造形が可能になるが、そのことを考慮しなけ
れば金属材によって形成することも可能である。In FIGS. 1 and 2, 2 is a mold for molding the resin molded product l, and this mold 2 is made of a resin material such as epoxy resin that has a heat resistance of 100° C. or higher to form the main body portion 6. By forming the mold 2 from a resin material in this way, molding can be done easily at low cost. It is also possible to do so.
まず、樹脂成形品ｌの造形を開始するにあたって、この
ような型２のキャビテイ面２ａに対し、第２図に示すよ
うにその平面部分の適宜位置に支柱３を取外し可能に突
設する。具体的には、例えば型２のキャビテイ面２ａに
穴を形成し、そこに針金等の支柱３を挿入する等の手段
を採る。ここで支柱３は溶融樹脂５の収縮を押えるため
のものであり、このような支柱３をキャビテイ面２ａの
平面部分に突設するのは、溶融樹脂５の収縮によるキャ
ビテイ面２ａからの剥離はすべてキャビテイ面２ａの平
面部分で発生するためである０例えば、エポキシのよう
な収縮率の極めて小さな樹脂（収縮率２〜３ ／ １０
００）においても平面部分に剥離が生じることがある。First, in starting the molding of the resin molded product 1, a support 3 is removably protruded from the cavity surface 2a of the mold 2 at an appropriate position on the flat surface of the mold 2, as shown in FIG. Specifically, for example, a hole is formed in the cavity surface 2a of the mold 2, and a support 3 such as a wire is inserted into the hole. Here, the struts 3 are for suppressing the shrinkage of the molten resin 5, and the purpose of providing such struts 3 protruding from the flat part of the cavity surface 2a is to prevent the molten resin 5 from peeling off from the cavity surface 2a due to contraction. This is because all of this occurs on the flat part of the cavity surface 2a.
00), peeling may occur on the flat surface.
第一の工程では、上述したような準備段階を経た後、第
１図中 （イ）に示すように、型２のキャビテイ面２ａ
に離型剤塗布装置９によってツー２素系若しくはシリコ
ン系の離型剤４を塗布する。この際の塗布厚みは３０〜
５０ｇｍとするのが好ましい。In the first step, after the preparation stage described above, the cavity surface 2a of the mold 2 is heated as shown in FIG.
A two-component or silicone-based mold release agent 4 is applied by a mold release agent application device 9 to the mold release agent 4 . The coating thickness at this time is 30~
Preferably, it is 50 gm.
第二の工程では、第１図中（ロ）に示すように、＃型剤
４の硬化後、その上面に溶射装置ｌＯによって溶融樹脂
５を所定厚みとなるまで吹き付ける。ここで溶融樹脂５
は、熱可塑性樹脂あるいは熱硬化性樹脂、さらにはこれ
等の混合体やこれ等にガラス繊維やカーボン繊維を混入
させたもの等が採用出来る。具体的には１例えばエポキ
シ（粒径１１００ＩＬ以下）、エチレン酢酸ビニル共重
合体（粒径１１００１Ｌ以下）、及び、シランカップリ
ング処理を施したガラスｔａ維（長さ １００ｇｍ以下
、径１０ＩＬｍ以下）ノ混合体等が用いられる。さらに
、支柱３を設けるようにしたため、ナイロンのような収
縮率の大きな樹脂を採用することもできる。In the second step, as shown in (b) in FIG. 1, after the #-shaped agent 4 has hardened, the molten resin 5 is sprayed onto its upper surface by a thermal spraying device IO until it reaches a predetermined thickness. Here, molten resin 5
Thermoplastic resins, thermosetting resins, mixtures of these resins, and mixtures of glass fibers and carbon fibers can be used. Specifically, 1, for example, epoxy (particle size of 1100 IL or less), ethylene-vinyl acetate copolymer (particle size of 11001 L or less), and glass TA fiber (length of 100 gm or less, diameter of 10 ILm or less) subjected to silane coupling treatment. A mixture or the like is used. Furthermore, since the struts 3 are provided, a resin having a high shrinkage rate such as nylon can be used.
第三の工程では、第１図中（ハ）で示すように、溶融樹
脂５の硬化を待ち、それを支柱３と共に型２から取り出
す、溶融樹脂５が硬化する際には多少の収縮が生じる（
樹脂材の種類によっては大きく収縮する。）が、溶融樹
脂５上の適宜点が支柱３によって押えられているため、
型２のキャビテイ面２ａからの部分的な剥離は生じない
。In the third step, as shown in (c) in Fig. 1, the molten resin 5 is waited for to harden, and then taken out from the mold 2 together with the pillars 3. When the molten resin 5 hardens, some shrinkage occurs. (
Depending on the type of resin material, it may shrink significantly. ) is held down by the pillar 3 at an appropriate point on the molten resin 5, so
Partial separation from the cavity surface 2a of the mold 2 does not occur.
第四の工程では、第１図中（ニ）で示すように、型２か
ら取り出された樹脂の端縁部１１に・対し、カッター１
２等によってトリミングを行った後、予め製作しておい
た補強リブ７や取付は座８を本体部分６の裏面（第１図
中（ロ）では上面）の適宜位置に接着し、支柱３の不要
部分をニッパ（図示せず）等を用いて切断する。この際
用いられる補強リブ７及び取付は座８の具体的材質とし
ては、例えばアクリルニトリル−ブタジェン−スチレン
樹脂（ＡＢＳ）等が用いられ、その接着は瞬間接着剤等
によって行われる。In the fourth step, as shown in (d) in FIG. 1, the cutter 1
After trimming with No. 2, etc., the reinforcing ribs 7 and mounting seats 8 made in advance are glued to the appropriate positions on the back surface of the main body portion 6 (the upper surface in (b) in FIG. 1), and then attached to the support 3. Cut off unnecessary parts using nippers (not shown) or the like. The specific material of the reinforcing ribs 7 and the mounting seat 8 used in this case is, for example, acrylonitrile-butadiene-styrene resin (ABS), and the adhesion is performed using an instant adhesive or the like.
最後に、第五の工程で、第１図中 （ニ）で示すように
塗装ガン１３で樹脂成形品１の表面（第１図中（ホ）で
は上面）に塗料１４を塗布する。Finally, in the fifth step, as shown in (d) in FIG. 1, paint 14 is applied to the surface of the resin molded product 1 (the upper surface in (e) in FIG. 1) using a coating gun 13.
塗料１４は、例えばウレタン塗料等が用いられる。As the paint 14, for example, urethane paint or the like is used.
次に、この応用例について説明する。この応用例では、
型２の準備段階において取付は座８等の機能部品が設け
られる型２のキャビテイ面２ａの位置にけがきを行い、
そこに支柱３を突設する。そして、第四の工程において
、補強リブ７や取付は座８の接着を行う、その際、第３
図に示すように、例えば取付は座８と支柱３を互いに接
触させ、その状態で接着剤１５を用いて本体部分６に接
着する。これによって取付は座８等の補強を行うように
する。その結果機能部を強固に補強した樹脂成形品ｌが
製造される。Next, this application example will be explained. In this application,
In the preparation stage of the mold 2, for installation, mark the position of the cavity surface 2a of the mold 2 where the functional parts such as the seat 8 will be installed.
Protrude the pillar 3 there. Then, in the fourth step, the reinforcing ribs 7 and the mounting seat 8 are bonded.
As shown in the figure, for example, the seat 8 and the support post 3 are attached by bringing them into contact with each other, and in this state, they are bonded to the main body part 6 using an adhesive 15. As a result, the seat 8 and the like are reinforced during installation. As a result, a resin molded product 1 with strongly reinforced functional parts is manufactured.
（発明の効果）
以上で詳細に説明したように、本発明によれば、型形状
に倣った所望形状の樹脂成形品が容易に得られるように
なるため、従来のものに比較して転写性が良くなり、製
造コストも低く抑えられるようになる。転写性の向−ヒ
は溶融樹脂を型に直接吹き付けることによるものである
が、これにより凹凸の激しいシボ模様等も樹脂成形品に
確実に転写されるようになる。(Effects of the Invention) As explained in detail above, according to the present invention, it is possible to easily obtain a resin molded product having a desired shape that follows the shape of a mold, and therefore the transferability is higher than that of conventional products. This results in better performance and lower manufacturing costs. The transferability is improved by directly spraying the molten resin onto the mold, which ensures that even highly uneven grained patterns are transferred to the resin molded product.
また、本発明によれば、溶融樹脂が硬化する際の収縮が
支柱によって押えられるため、溶融樹脂の吹き付は途中
での型２からの剥離が生じなくなり、ナイロンのような
収縮率の高い樹脂素材であっても高精度で製造出来るよ
うになるという効果も得られる。In addition, according to the present invention, since the shrinkage of the molten resin when it hardens is suppressed by the struts, the molten resin does not peel off from the mold 2 during spraying, and the molten resin does not peel off from the mold 2 during spraying. Another advantage is that even materials can be manufactured with high precision.
さらに本発明の場合、型自体を高温にする必要がないた
め、樹脂製の型を採用して型の製造コストを低く抑える
ことも出来るようになる。Furthermore, in the case of the present invention, since there is no need to heat the mold itself to a high temperature, it is possible to use a resin mold to keep the manufacturing cost of the mold low.
また成形品の厚みも型に対する溶融樹脂の吹き付は量の
調整によって比較的容易にコン、トロールすることが出
来るため厚み精度も高まる。Furthermore, the thickness of the molded product can be relatively easily controlled by adjusting the amount of molten resin sprayed onto the mold, which improves thickness accuracy.
第１図は本発明の一実施例の工程を示す模式断面図、第
２図は同実施例の初期設定状態における拡大断面図、第
３図は本発明の応用例を示す断面図である。
ｌ・・・樹脂成形品、 ２・・・型３・・・ピン材
、 ４・・・離型剤５・・・溶融樹脂
特許出願人 トヨタ自動車株式会社
同 上 豊通エンジニアリング株式会社代理人 弁理
士 萼 優 美
第１図
５溶融樹脂
第２図
第 ３ 図FIG. 1 is a schematic cross-sectional view showing the steps of an embodiment of the present invention, FIG. 2 is an enlarged cross-sectional view of the same embodiment in an initial setting state, and FIG. 3 is a cross-sectional view showing an application example of the present invention. l... Resin molded product, 2... Mold 3... Pin material, 4... Mold release agent 5... Molten resin patent applicant Toyota Motor Corporation Same as above Toyota Tsusho Engineering Co., Ltd. Agent Patent attorney Figure 1 5 Molten resin Figure 2 Figure 3
Claims (1)
外し可能に支柱を突出させておき、前記型に離型剤を塗
布した後に溶融樹脂を吹き付け、該溶融樹脂をその硬化
を待って前記支柱と共に型から取り出すようにしたこと
を特徴とする樹脂成形品の製造方法。(1) A mold corresponding to the shape of the resin molded product is provided, a removable support is made to protrude from the mold, a mold release agent is applied to the mold, then molten resin is sprayed, and the molten resin is waited for to harden. A method for producing a resin molded product, characterized in that the product is removed from the mold along with the support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5429488A JPH01226314A (en) | 1988-03-08 | 1988-03-08 | Preparation of resin molded item |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5429488A JPH01226314A (en) | 1988-03-08 | 1988-03-08 | Preparation of resin molded item |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01226314A true JPH01226314A (en) | 1989-09-11 |
Family
ID=12966547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5429488A Pending JPH01226314A (en) | 1988-03-08 | 1988-03-08 | Preparation of resin molded item |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01226314A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7496765B2 (en) | 2004-03-22 | 2009-02-24 | International Business Machines Corporation | System, method and program product to prevent unauthorized access to portable memory or storage device |
| JP2013525741A (en) * | 2010-05-06 | 2013-06-20 | ヒートマトリクス グループ ビー．ヴィ． | Heat exchanger tube plate, heat exchanger, and method of manufacturing heat exchanger tube plate |
-
1988
- 1988-03-08 JP JP5429488A patent/JPH01226314A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7496765B2 (en) | 2004-03-22 | 2009-02-24 | International Business Machines Corporation | System, method and program product to prevent unauthorized access to portable memory or storage device |
| JP2013525741A (en) * | 2010-05-06 | 2013-06-20 | ヒートマトリクス グループ ビー．ヴィ． | Heat exchanger tube plate, heat exchanger, and method of manufacturing heat exchanger tube plate |
| US9429365B2 (en) | 2010-05-06 | 2016-08-30 | Heatmatrix Group B.V. | Heat exchanger tube sheet, a heat exchanger and a method of manufacturing a heat exchanger tube sheet |
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