JPH0645204B2 - Manufacturing method of air spoiler with hollow part - Google Patents
Manufacturing method of air spoiler with hollow partInfo
- Publication number
- JPH0645204B2 JPH0645204B2 JP30246589A JP30246589A JPH0645204B2 JP H0645204 B2 JPH0645204 B2 JP H0645204B2 JP 30246589 A JP30246589 A JP 30246589A JP 30246589 A JP30246589 A JP 30246589A JP H0645204 B2 JPH0645204 B2 JP H0645204B2
- Authority
- JP
- Japan
- Prior art keywords
- molded product
- water
- mold
- soluble polymer
- molded
- 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.)
- Expired - Fee Related
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000000463 material Substances 0.000 claims description 22
- 229920003169 water-soluble polymer Polymers 0.000 claims description 20
- 229920003002 synthetic resin Polymers 0.000 claims description 15
- 239000000057 synthetic resin Substances 0.000 claims description 15
- 229920001169 thermoplastic Polymers 0.000 claims description 15
- 239000004416 thermosoftening plastic Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 238000012805 post-processing Methods 0.000 claims description 2
- 238000001746 injection moulding Methods 0.000 description 5
- 239000011162 core material Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000005187 foaming Methods 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 238000000071 blow moulding Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000010097 foam moulding Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000001721 transfer moulding Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ この発明は、自動車に使用されるエアスポイラーなどの
厚肉成形品の製法に関するものである。TECHNICAL FIELD The present invention relates to a method for producing a thick-walled molded product such as an air spoiler used in an automobile.
［従来の技術］ 従来、エアスポイラー（リヤースポイラー）などの厚肉
成形品を製造する方法としては、 ブロー成形法、 射出成形時に高圧ガスをキャビティー内に注入し中空
とする方法、 材料に発泡剤を嵌合して低圧、または高圧で射出成形
する方法、 強度を保持するための金属芯をインサートし、発泡ウ
レタン成形する方法、 などがある。[Prior Art] Conventionally, as a method of manufacturing a thick-walled molded product such as an air spoiler (rear spoiler), a blow molding method, a method of injecting a high-pressure gas into a cavity at the time of injection molding to make it hollow, and foaming a material. There are methods such as injection molding at a low pressure or high pressure by fitting agents, and a method of inserting a metal core for maintaining strength and molding urethane foam.
しかし、このような従来工法ではつぎの欠点がある。However, such a conventional method has the following drawbacks.
前述のブロー成形工法では、バリソンの過程で筋目が
生ずると同時に、真空引きや高圧エアの注入のみでは、
表面をフラッシュ（平坦）に仕上げることができず、フ
ラッシュな塗装を施すような高品質な表面を得るために
は、仕上げ工程に大変な工程が必要であった。In the blow molding method described above, lines are generated in the process of ballisoning, and at the same time, only vacuuming or injecting high pressure air,
The surface could not be finished to be flush (flat), and in order to obtain a high-quality surface to which a flash coating was applied, a difficult step was required in the finishing process.
また、均一な肉厚が得られず、安定品質の製品を得るこ
とができなかった。Moreover, a uniform wall thickness could not be obtained, and a stable quality product could not be obtained.
の射出成形時の高圧ガス注入方法は、高圧ガスが均等
に得られず、不均肉となると同時に、重量的な軽減が20
〜30％しか得られない問題がある。The method of injecting high-pressure gas at the time of injection molding is that the high-pressure gas cannot be obtained uniformly, resulting in uneven thickness and at the same time reducing weight.
There is a problem that you can only get ~ 30%.
の発泡剤を混入し、厚肉を成形する方法は、発泡が安
定するまでの冷却時間が多くかかり、量産性に乏しく、
さらに塗装を施す高品質な表面の場合、後発泡により塗
膜が膨れる問題点がある の発泡ウレタン成形法では、金属芯を全体を必要と
し、そのため重量が軽減できないことと、塗装を必要と
する場合、ボイド（空隙）による膨れが発生する問題が
ある。The method of mixing a foaming agent and molding a thick wall requires a long cooling time until the foaming stabilizes, resulting in poor mass productivity,
Furthermore, in the case of a high quality surface to be painted, there is a problem that the coating film swells due to post-foaming. The urethane foam molding method requires the entire metal core, so the weight cannot be reduced and the coating is necessary. In this case, there is a problem that swelling occurs due to voids (voids).
［発明が解決するための課題］ この発明は上記の各製法における欠点を解決するところ
の、自動車に使用されるエアスポイラーなどの製法を提
供するものである。[Problems to be Solved by the Invention] The present invention provides a manufacturing method for an air spoiler or the like used in an automobile, which solves the drawbacks of the above manufacturing methods.
［課題を解決するための手段］ 水溶性ポリマーで第一成形品を成形し、この第一成形品
を型内へセットし、所望する熱可塑性合成樹脂材をそれ
に射出して第二成形品を成形する。[Means for Solving the Problems] A first molded product is molded from a water-soluble polymer, the first molded product is set in a mold, and a desired thermoplastic synthetic resin material is injected into the molded product to form a second molded product. Mold.
さらにこの第二成形品を別の型内へセットし、第二成形
品と同材質または第二成形品より溶融温度の低い熱可塑
性合成樹脂材で第三成形品を成形する。このようにして
第三成形品は水溶性ポリマーを内蔵した構成になってお
り、第二成形品、第三成形品を成形する時の金型から必
要に応じ水溶性ポリマーに達する孔を設けるとか、第三
成形品の所望の個所の後加工により、水溶性ポリマーに
達する孔を設け、この孔より水分を注入し、水溶性ポリ
マーを溶出させることを特徴とする中空部を有するエア
スポイラーの製造方法である。Further, the second molded product is set in another mold, and the third molded product is molded with the same material as the second molded product or a thermoplastic synthetic resin material having a lower melting temperature than the second molded product. In this way, the third molded product has a structure in which a water-soluble polymer is built in, and holes for reaching the water-soluble polymer may be provided from the mold when molding the second molded product and the third molded product, if necessary. , A manufacturing process of an air spoiler having a hollow portion, characterized in that a hole reaching a water-soluble polymer is formed by post-processing of a desired portion of a third molded product, and water is injected from this hole to elute the water-soluble polymer. Is the way.
［作用］ 水溶性ポリマーを内蔵した第三成形品の孔に任意の時
間、水分を流通することにより、水溶性ポリマーのみが
溶解して、均一な肉厚を有する中空成形品を容易に作る
ことができる。[Operation] By allowing water to flow through the holes of the third molded product containing the water-soluble polymer for an arbitrary time, only the water-soluble polymer is dissolved, and a hollow molded product having a uniform wall thickness can be easily produced. You can
［実施例］ 当初、第１図ａ、第１図ｂに示すような完成品(A) とな
るところの、ほゞエアスポイラーの形状をなすための芯
材となる第一成形品(1) を、射出成形法により水溶性ポ
リマーで成形する。［第２図ａ、第２図ｂ図示］。[Embodiment] Initially, a first molded product (1) which is a core material for forming a nearly air spoiler, which is a finished product (A) as shown in FIGS. 1a and 1b. Is molded from a water-soluble polymer by an injection molding method. [FIGS. 2a and 2b].
この第一成形品(1) を、第３図ａ図示の第二成形品用金
型(B) にインサートし、移出成形法により第二成形品
(2)を熱可塑性合成樹脂材で成形する［第３図ｂ図
示］。This first molded product (1) is inserted into the mold (B) for the second molded product shown in Fig. 3a, and the second molded product is manufactured by the transfer molding method.
(2) is molded with a thermoplastic synthetic resin material [shown in FIG. 3b].
このとき、第二成形品用金型(B) に第一成形品(1) をイ
ンサートして固定する方法としては、第３図ｄ図示の両
面テープ(t) で固定するか、第一成形品(1) を成形する
ときに、あらかじめ金型によって所望するところへ凹部
(R) を設け［第３図ｅ］、その凹部(R) を第３図ａ図示
のように、第二成形品用金型(B) の該当するところへ凸
部(R′)を設けて固定する方法がよい。At this time, as a method for inserting and fixing the first molded product (1) in the second molded product die (B), the first molded product (1) is fixed with the double-sided tape (t) shown in FIG. When molding the product (1), use a mold to make a recess in the desired location.
(R) is provided [Fig. 3e], and the concave portion (R) is provided with the convex portion (R ') at the corresponding position of the second molding die (B) as shown in Fig. 3a. It is better to fix it with
つぎに第二成形品(2) を第４図ａ図示の第三成形品用金
型(C) にインサートし、第４図ｂ図示の第三成形品(3)
を射出成形法により熱可塑性合成樹脂材で成形する。Next, insert the second molded product (2) into the third molded product die (C) shown in Fig. 4a, and the third molded product (3) shown in Fig. 4b.
Is molded from a thermoplastic synthetic resin material by an injection molding method.
この場合の第三成形品用金型(C) 内へ、第二成形品(2)
をインサートして固定する方法は、第二成形用金型(B)
と同じ固定方法とすればよい。In this case, insert the second molded product (2) into the mold (C) for the third molded product.
The method of inserting and fixing is the second mold (B)
The same fixing method as described in 1.
このようにしてできあがった第三成形品(3) は、芯材と
なる第一成形品(1) が内部につまった状態にあるため重
量は重くなっている［第４図ｃ、第４図ｄ］。The thus formed third molded product (3) has a heavy weight because the first molded product (1), which is the core material, is packed inside [Figs. 4c and 4c]. d].
そして第二成形品用金型(B) 、第三成形用金型(C) にお
いて、成形操作に影響のない個所から、水溶性ポリマー
に達する孔(h) を形成する構造にするか［第４図ａ］、
第三成形品(3) 完成後、それ自体に影響のない個所へ孔
(h′)を開けるかし［第４図ｄ］、それらの孔(h),(h′)
から水を流通させて、任意の時間で水溶性ポリマーを溶
解する。Then, in the second molding die (B) and the third molding die (C), whether the structure is such that the hole (h) reaching the water-soluble polymer is formed from a location that does not affect the molding operation [first Figure 4a],
After completion of the third molded product (3), make a hole in a place that does not affect itself.
If (h ') is opened [Fig. 4d], those holes (h), (h')
Water is circulated from the solution to dissolve the water-soluble polymer at an arbitrary time.
溶解が完了すれば、中空な均一肉厚を持ったエアスポイ
ラーができることになる。When the melting is completed, a hollow air spoiler with a uniform thickness will be produced.
第二成形品(2) 、第三成形品用(3) 用の合成樹脂材は熱
可塑性で、第二成形品(2) は第三成形品(3) に比べ、溶
解温度の低い合成樹脂材が望ましく、また同種の材料が
望ましい。The synthetic resin material for the second molded product (2) and the third molded product (3) is thermoplastic, and the second molded product (2) has a lower melting temperature than the third molded product (3). Wood is desirable, and similar materials are desirable.
これは第二成形品(2) と第二成形品(3) が、相互に確実
に溶解結合するために必要である。This is necessary to ensure that the second molded product (2) and the second molded product (3) are melt-bonded to each other.
しかしながら、必要に応じて異材質とする場合には、第
二成形品(2) 成形後、第三成形品(3) と密着する面に、
密着を促進するプライマー(P) を塗付後、インサート成
形するとよい［第４図ｄ］。However, if different materials are used as needed, after molding the second molded product (2), the surface closely contacted with the third molded product (3)
After applying the primer (P) that promotes adhesion, insert molding may be performed [Fig. 4d].
［発明の効果］ この発明によれば、所望する肉厚を常に一定に確保で
き、しかも中空なエアスポイラーを成形することが可能
である。これによって軽量化を達成する。[Effects of the Invention] According to the present invention, it is possible to always ensure a desired wall thickness and to form a hollow air spoiler. This achieves weight reduction.
エアスポイラーの表面は熱可塑性合成樹脂材の成形方法
により、きわめてフラッシュなレベリングのよい面を形
成することが可能であり、二次加工の塗装の行い易さ
と、全体の高品質と高品質の外観を得ることができる。The surface of the air spoiler can be formed into a surface with excellent flash leveling due to the molding method of the thermoplastic synthetic resin material, and it is easy to apply the secondary processing and the overall high quality and high quality appearance. Can be obtained.
さらには、製品の必要とする性能特性に見合った熱可塑
性合成樹脂材を選定することにより、 経済的なエアスポイラーを得ることができ、これはコス
トダウンに貢献することが多大である。Furthermore, an economical air spoiler can be obtained by selecting a thermoplastic synthetic resin material that matches the performance characteristics required by the product, which greatly contributes to cost reduction.
なおこの発明は自動車用のエアスポイラーの例を示した
が、他に厚肉、高度の意匠性、高度の外観を有する各種
の製品にも適用できるものである。Although the present invention shows an example of an air spoiler for an automobile, it can also be applied to various products having a thick wall, a high degree of design, and a high appearance.
第１図ａはエアスポイラーの成形完成品の斜視図、 第１図ｂは第１図ａのａ−ａ′線拡大断面図、第２図ａ
は水溶性ポリマーによるエアスポイラーの第一成形品の
斜視図、 第２図ｂは第２図ａのｂ−ｂ′線断面図、 第３図ａは第二成形品用金型の縦断面図、 第３図ｂは第一成形品をインサートし、熱可塑性合成樹
脂材を成形した第二成形品を斜視図、 第３図ｃは第３図ｂのｃ−ｃ′断面図、 第３図ｄは第一成形品の使用例を示す断面図、 第３図ｅは第一成形品の他の使用例を示す断面図、 第４図ａは第三成形品用金型の縦断面図、 第４図ｂは第二成形品をインサートし、熱可塑性合成樹
脂材を成形した第三成形品の一部斜視図、 第４図ｃは第４図ｂのｄ−ｄ′拡大断面図、 第４図ｄは第４図ｂのｅ−ｅ′線拡大断面図でる。 (A) ……完成品 (1) ……第一成形品、(2) ……第二成形品 (3) ……第三成形品 (B) ……第二成形品用金型 (C) ……第三成形品用金型 (h),(h′)……孔Fig. 1a is a perspective view of a finished product of the air spoiler, Fig. 1b is an enlarged sectional view taken along the line aa 'of Fig. 1a, and Fig. 2a.
Is a perspective view of a first molded product of an air spoiler made of a water-soluble polymer, FIG. 2b is a sectional view taken along line bb ′ of FIG. 2a, and FIG. 3a is a vertical sectional view of a second molded product mold. Fig. 3b is a perspective view of a second molded product in which the first molded product is inserted and a thermoplastic synthetic resin material is molded, and Fig. 3c is a sectional view taken along the line cc 'of Fig. 3b. d is a cross-sectional view showing a usage example of the first molded product, FIG. 3e is a cross-sectional view showing another usage example of the first molded product, and FIG. 4a is a vertical cross-sectional view of a mold for a third molded product. Fig. 4b is a partial perspective view of a third molded product in which the second molded product is inserted and a thermoplastic synthetic resin material is molded, and Fig. 4c is an enlarged cross-sectional view of d-d 'of Fig. 4b. FIG. 4d is an enlarged sectional view taken along the line ee ′ of FIG. 4b. (A) …… Finished product (1) …… First molded product, (2) …… Second molded product (3) …… Third molded product (B) …… Mold for second molded product (C) ...... Mold for third molded product (h), (h ') …… Hole
Claims (3)
の第一成形品を型内へセットし、所望する熱可塑性合成
樹脂材をそれに射出して第二成形品を成形し、この第二
成形品を別の型内へセットし、第二成形品と同材質また
は第二成形品より溶融温度の低い熱可塑性合成樹脂材で
第三成形品を成形し、第三成形品に水溶性ポリマーに達
する孔を設け、この孔より水分を注入し、水溶性ポリマ
ーを溶出させることを特徴とする中空部を有するエアス
ポイラーの製法。1. A first molded product is molded from a water-soluble polymer, the first molded product is set in a mold, and a desired thermoplastic synthetic resin material is injected thereinto to mold a second molded product. Set the second molded product in a different mold, mold the third molded product with the same material as the second molded product or with a thermoplastic synthetic resin material with a lower melting temperature than the second molded product, and dissolve the third molded product in water. A method for producing an air spoiler having a hollow portion, characterized in that a hole reaching a water-soluble polymer is provided, and water is injected from the hole to elute the water-soluble polymer.
の第一成形品を型内へセットし、所望する熱可塑性合成
樹脂材をそれに射出して第二成形品を成形し、この第二
成形品を別の型内へセットし、第二成形品と同材質また
は第二成形品より溶融温度の低い熱可塑性合成樹脂材で
第三成形品を成形し、第二成形品、第三成形品を成形す
る時の金型から水溶性ポリマーに達する孔を設け、この
孔より水分を注入し、水溶性ポリマーを溶出させること
を特徴とする請求項１記載の中空部を有するエアスポイ
ラーの製法。2. A first molded product is molded from a water-soluble polymer, the first molded product is set in a mold, and a desired thermoplastic synthetic resin material is injected into the molded product to form a second molded product. Set the second molded product in another mold and mold the third molded product with the same material as the second molded product or a thermoplastic synthetic resin material with a lower melting temperature than the second molded product. 3. An air spoiler having a hollow portion according to claim 1, wherein a hole reaching a water-soluble polymer is provided from a mold when molding a three-dimensional molded article, and water is injected through the hole to elute the water-soluble polymer. Manufacturing method.
の第一成形品を型内へセットし、所望する熱可塑性合成
樹脂材をそれに射出して第二成形品を成形し、この第二
成形品を別の型内へセットし、第二成形品と同材質また
は第二成形品より溶融温度の低い熱可塑性合成樹脂材で
第三成形品を成形し、第三成形品の所望の個所に後加工
により、水溶性ポリマーに達する孔を設け、この孔より
水分を注入し、水溶性ポリマーを溶出させることを特徴
とする請求項１記載の中空部を有するエアスポイラーの
製法。3. A first molded product is molded from a water-soluble polymer, the first molded product is set in a mold, and a desired thermoplastic synthetic resin material is injected thereinto to mold a second molded product. Set the second molded product in a different mold and mold the third molded product with the same material as the second molded product or with a thermoplastic synthetic resin material with a lower melting temperature than the second molded product. 2. A method for manufacturing an air spoiler having a hollow portion according to claim 1, wherein a hole reaching the water-soluble polymer is provided at the point of (1) by post-processing, and water is injected from the hole to elute the water-soluble polymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30246589A JPH0645204B2 (en) | 1989-11-21 | 1989-11-21 | Manufacturing method of air spoiler with hollow part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30246589A JPH0645204B2 (en) | 1989-11-21 | 1989-11-21 | Manufacturing method of air spoiler with hollow part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03161328A JPH03161328A (en) | 1991-07-11 |
| JPH0645204B2 true JPH0645204B2 (en) | 1994-06-15 |
Family
ID=17909272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30246589A Expired - Fee Related JPH0645204B2 (en) | 1989-11-21 | 1989-11-21 | Manufacturing method of air spoiler with hollow part |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0645204B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5319259B2 (en) * | 2008-12-10 | 2013-10-16 | サカエ理研工業株式会社 | Insert injection molding method for base member of decorative member, and base member thereof |
-
1989
- 1989-11-21 JP JP30246589A patent/JPH0645204B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03161328A (en) | 1991-07-11 |
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