JPH04282209A - Manufacture of foam molded article integral with skin - Google Patents
Manufacture of foam molded article integral with skinInfo
- Publication number
- JPH04282209A JPH04282209A JP3069210A JP6921091A JPH04282209A JP H04282209 A JPH04282209 A JP H04282209A JP 3069210 A JP3069210 A JP 3069210A JP 6921091 A JP6921091 A JP 6921091A JP H04282209 A JPH04282209 A JP H04282209A
- Authority
- JP
- Japan
- Prior art keywords
- skin
- mold
- foaming
- foam
- manufacturing
- 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.)
- Granted
Links
- 239000006260 foam Substances 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000005187 foaming Methods 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 7
- 239000006261 foam material Substances 0.000 claims description 4
- 230000037303 wrinkles Effects 0.000 abstract description 20
- 238000000465 moulding Methods 0.000 abstract description 10
- 239000011324 bead Substances 0.000 abstract 4
- 230000013011 mating Effects 0.000 abstract 2
- 210000003491 skin Anatomy 0.000 description 31
- 239000011162 core material Substances 0.000 description 6
- 210000002615 epidermis Anatomy 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000005357 flat glass Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920006327 polystyrene foam Polymers 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
Landscapes
- Instrument Panels (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【0001】0001
【産業上の利用分野】本発明は、発泡型によって表皮と
発泡層を一体に成形するような成形法に関し、型閉めの
際表皮に生ずるシワの発生をコントロ−ルするようにし
た製造方法に関する。[Field of Industrial Application] The present invention relates to a molding method in which a skin and a foam layer are integrally molded using a foaming mold, and relates to a manufacturing method that controls the generation of wrinkles on the skin when the mold is closed. .
【0002】0002
【従来の技術】従来、例えば自動車のインストルメント
パネルのような内装材として用いられる発泡成形品は、
ポリ塩化ビニ−ル樹脂等によって成形された表皮と共に
、ポリウレタンフォ−ム、ポリスチレンフォ−ム、発泡
ポリエチレン等の発泡材料を発泡させて一体に成形して
いる。このような成形法は、例えば特開昭63−684
14号、特開昭63−293012号、特開平1−15
2018号、特公平2−37845号のような製造方法
として提唱され、一般的に発泡型内に表皮をセットした
後型内に発泡材料を注入して発泡硬化させ一体成形して
いる。そして発泡成形間型内に注入した発泡材料が外部
に漏出しないよう、表皮の端部を発泡型の型合せ面に臨
ませてシ−ル面を形成するのが一般的である。[Prior Art] Conventionally, foam molded products have been used as interior materials for automobile instrument panels, for example.
It is integrally molded with a skin made of polyvinyl chloride resin or the like by foaming a foam material such as polyurethane foam, polystyrene foam, or foamed polyethylene. Such a molding method is described, for example, in Japanese Patent Application Laid-Open No. 63-684.
No. 14, JP-A-63-293012, JP-A-1-15
It has been proposed as a manufacturing method such as No. 2018 and Japanese Patent Publication No. 2-37845, and generally, a skin is set in a foaming mold, then a foaming material is injected into the mold, and the foaming material is cured and integrally molded. In order to prevent the foam material injected into the foam mold from leaking to the outside, it is common to have the end of the skin face the molding surface of the foam mold to form a sealing surface.
【0003】0003
【発明が解決しようとする課題】しかし上述のような発
泡型において、表皮の形成するシ−ル面が型閉めの方向
に対して傾斜角を有するような場合、型閉め操作によっ
て同部の表皮がシ−ル面に沿ってずれ、結果的に成形品
の端部近傍にシワが発生するという不具合があった。そ
してかかる表皮一体成形品においては、表皮は外観面側
であるため、シワの発生は製品そのものの不良となるこ
とから、改良が望ましかった。[Problems to be Solved by the Invention] However, in the above-mentioned foaming mold, if the sealing surface formed by the skin has an angle of inclination with respect to the mold closing direction, the mold closing operation may cause the skin in the same area to There was a problem in that the molded product was misaligned along the sealing surface, resulting in wrinkles occurring near the ends of the molded product. In such skin-integrated molded products, since the skin is on the exterior side, the occurrence of wrinkles would be a defect in the product itself, so improvements were desirable.
【0004】0004
【課題を解決するための手段】かかる課題を解決するた
め、本発明は型閉め方向に対して傾斜したシ−ル面を形
成するような発泡型において、表皮のシ−ル面近傍に突
条部を設けるとともに、発泡型には該突条部に対応する
形状の形状部を設けた。そして形状部と突条部を位置合
せして表皮をセットした後、型内に発泡材料を注入し表
皮の裏面に発泡層を一体に成形するようにした。又、か
かる形状部を設けた発泡型内には、突条部を形成しない
表皮をセットするようにしても良い。[Means for Solving the Problems] In order to solve the above problems, the present invention provides a foam mold that forms a sealing surface inclined with respect to the mold closing direction, in which a protrusion is provided in the vicinity of the sealing surface of the skin. In addition, the foaming mold was provided with a shaped part corresponding to the protrusion. After aligning the shaped part and the protruding part and setting the skin, a foaming material was injected into the mold to integrally mold the foam layer on the back surface of the skin. Furthermore, a skin without any protrusions may be set in the foaming mold provided with such a shaped part.
【0005】[0005]
【作用】表皮に設けた突条部と発泡型に設けた形状部の
位置を合せてセットすることにより型閉め時にシワの発
生がシ−ル面と突条部の間に限定され、その発生位置を
コントロ−ル出来る。つまり従来であればシワの発生位
置が成行きであったため、製品として不良となるか否か
が成形完了まで判らなかったが、本案の場合はシワの発
生を全く皆無とする訳ではないが、製品として不良とな
るといった不具合がない。又、突条部を形成しない表皮
の場合でも、多少のシワなら、発泡型の形状部によって
吸収することが出来る。すなわち同部が、変形した表皮
の逃げ場となって表皮を変形させようとする力が遮断さ
れるからである。[Function] By aligning the protrusions provided on the skin with the shaped parts provided on the foam mold, the occurrence of wrinkles when the mold is closed is limited between the sealing surface and the protrusions, and wrinkles do not occur. You can control the position. In other words, in the past, the location of wrinkles was determined, and it was not known whether the product would be defective or not until the molding was completed, but in the case of this proposal, wrinkles are not completely eliminated, but There are no defects that would make the product defective. Furthermore, even in the case of the epidermis that does not have protrusions, some wrinkles can be absorbed by the foam-shaped part. In other words, this is because the same area becomes a place for the deformed epidermis to escape, and the force that tends to deform the epidermis is blocked.
【0006】[0006]
【実施例】本発明の表皮一体発泡成形品の製造方法につ
いて添付した図面に基づき説明する。図1は本発明の製
造方法に用いる発泡型の縦断面図、図2は図1のA部拡
大図、図3は同部の従来例、図4は本発明の方法で製造
される自動車のインストルメントパネルの斜視図、図5
は図4のB−B線断面図である。本発明の表皮一体発泡
成形品の製造方法は、例えば図4に示すような車両のイ
ンストルメントパネル1の製造に適用され、図1に示す
ような発泡型2 ,3で一体に成形される。すなわちこ
のインストルメントパネル1は、芯材4と表皮5とその
間の発泡体層6が一体に成形され、例えば表皮5はポリ
塩化ビニ−ル樹脂等をスラッシュ成形する等によって表
面(図1の下面側)に予め絞加工等を施している。EXAMPLES The method for producing a skin-integrated foam molded product of the present invention will be explained based on the attached drawings. FIG. 1 is a longitudinal sectional view of a foaming mold used in the manufacturing method of the present invention, FIG. 2 is an enlarged view of part A in FIG. 1, FIG. 3 is a conventional example of the same part, and FIG. Perspective view of the instrument panel, Figure 5
is a sectional view taken along the line B-B in FIG. 4. The method of manufacturing an integrally foamed skin molded product of the present invention is applied, for example, to the manufacture of a vehicle instrument panel 1 as shown in FIG. 4, and is integrally molded using foam molds 2 and 3 as shown in FIG. That is, in this instrument panel 1, a core material 4, a skin 5, and a foam layer 6 therebetween are integrally molded. For example, the skin 5 is formed by slush molding polyvinyl chloride resin, etc. (side) has been subjected to drawing processing etc. in advance.
【0007】それではかかる発泡型2 ,3による本発
明の成形法について、従来の方法と比較しながら説明す
る。発泡上型2は下型3に対して上下動自在とされ、上
動して型開きし下動して型閉めする。そして型閉めした
際、成形品の形状に合致した発泡材料充填部7を形成す
る。型開きしている間、型内に表皮5と芯材4がセット
される。そして下型3にセットされた表皮5の端部の一
部は充填部7周囲の型合せ面まで延出し、型閉め時に芯
材4と表皮5、或いは上型2と表皮5の間でシ−ル面8
を形成すべく位置決めされる。Next, the molding method of the present invention using the foaming molds 2 and 3 will be explained in comparison with the conventional method. The foaming upper mold 2 is vertically movable relative to the lower mold 3, and is moved upward to open the mold and moved downward to close the mold. When the mold is closed, a foamed material filling portion 7 matching the shape of the molded product is formed. While the mold is being opened, the skin 5 and core material 4 are set in the mold. A part of the end of the skin 5 set in the lower mold 3 extends to the mold matching surface around the filling part 7, and when the mold is closed, a part of the end of the skin 5 is formed between the core material 4 and the skin 5, or between the upper mold 2 and the skin 5. -le surface 8
is positioned to form a
【0008】ところで、このシ−ル面8の面方向は上型
2の型閉め、型開き方向(垂直上下方向)に対して傾斜
角を有しているため、従来では表皮5のシ−ル面8近傍
にシワが発生していた。すなわち図3に示すように上型
2の型閉めによって表皮5は、シ−ル面8に沿って図中
X方向にずれようとし、これに抵抗するY方向からの抵
抗力によってシ−ル面8近傍、特にシール面8の下方ま
わりの表皮5にシワが発生するというものである。しか
もこのシワの発生部位は、成行きまかせであり、この結
果製品の外観品質を損ねることが多々あった。By the way, since the surface direction of this sealing surface 8 has an inclination angle with respect to the mold closing and mold opening directions (vertical up and down directions) of the upper mold 2, conventionally, the sealing surface of the skin 5 Wrinkles were found near surface 8. That is, as shown in FIG. 3, when the upper mold 2 is closed, the skin 5 tends to shift in the X direction in the figure along the sealing surface 8, and due to the resistance force from the Y direction that resists this, the sealing surface Wrinkles occur in the skin 5 near the sealing surface 8, particularly around the lower part of the sealing surface 8. Moreover, the areas where these wrinkles occur are left to their own devices, and as a result, the appearance quality of the product is often impaired.
【0009】そこで本発明の場合は、図2に示すように
、表皮5のシ−ル面8近傍の製品部に突条部10を設け
、一方、下型3にも同一対応形状の形状部11を設けて
いる。そしてこの表皮5の突条部10は、シ−ル面5に
沿って連続するものでもよく、又複数の突条部10をシ
−ル面5に沿って断続的に設けるようにしたものでも良
い。又、この突出方向は、図のように製品外観面側とし
ても良いし、反対に線品の内方に向けたものでも良い。
しかし内方よりも外方に向けて突出させた方がシワが目
立ちにくいという利点がある。又、表皮5への突条部1
0の形成は、例えばプレス成形、真空成形、スラッシュ
成形等による。Therefore, in the case of the present invention, as shown in FIG. 2, a protrusion 10 is provided on the product part of the skin 5 in the vicinity of the sealing surface 8, and on the other hand, a shaped part having the same corresponding shape is also provided on the lower die 3. 11 are provided. The protrusions 10 of the skin 5 may be continuous along the sealing surface 5, or a plurality of protrusions 10 may be provided intermittently along the sealing surface 5. good. Further, this protruding direction may be directed toward the external surface of the product as shown in the figure, or may be directed toward the inside of the wire product. However, there is an advantage that wrinkles are less noticeable when the skin protrudes outward rather than inward. In addition, the protrusion 1 to the epidermis 5
0 is formed by, for example, press molding, vacuum molding, slush molding, or the like.
【0010】以上のような表皮5は、突条部10が下型
3の形状部11に嵌め込まれる状態で位置決めされ、次
いで芯材4がセットされた後型閉めされると、端部の重
合部にシ−ル面8が形成される。そして図1に示す注入
口12から発泡材料が注入され、この発泡材料は表皮5
と芯材4の間の充填部7に入り込む。尚、前記型閉めは
、発泡材料を充填部7に充填した後に行なうこともある
。この型閉めの際、図2に示すようにシ−ル面8には、
従来と同様表皮5に対してX方向の力が作用するが、突
条部10と形状部11によってそれより下方の製品部に
は力が伝達されず、シワはシ−ル面8と突条部10の間
に限定されることとなる。そしてこの突条部10の位置
は、例えば図5に示すようにインストルメントパネル1
のデフロスタ部のウインドガラス14の付根部とするこ
とにより、ウインドガラス14下方のセラミックカラ−
15部によって目立たせないことが出来る。尚、この方
法によってシワの発生位置をコントロ−ル出来るばかり
でなく、シワの量も減らせることが判明した。[0010] The skin 5 as described above is positioned so that the protruding portion 10 is fitted into the shaped portion 11 of the lower mold 3, and then when the core material 4 is set and the mold is closed, the end portions overlap. A sealing surface 8 is formed on the portion. Then, a foamed material is injected from the injection port 12 shown in FIG.
It enters the filling part 7 between the core material 4 and the core material 4. Note that the mold closing may be performed after filling the filling portion 7 with the foam material. When closing the mold, as shown in FIG.
As in the past, a force in the X direction acts on the skin 5, but the force is not transmitted to the product part below it due to the protrusion 10 and the shaped part 11, and the wrinkles are caused by the sealing surface 8 and the protrusion. 10. The position of this protrusion 10 is, for example, as shown in FIG.
By making the base of the window glass 14 of the defroster part, the ceramic collar below the window glass 14 can be
Part 15 makes it possible to make it less noticeable. It has been found that this method not only allows the position of wrinkles to be controlled, but also reduces the amount of wrinkles.
【0011】ところで以上のような発泡型2 ,3によ
って、突条部10を形成しない表皮5でも適用できるこ
とも判った。これは下型3に設けた形状部11が、ずれ
ようとする表皮の逃げ部として作用するからであると推
測される。すなわち、ずれようとする表皮5の伸び分が
形状部11で吸収され、それより下方に力が作用するの
を遮断する効果があり、ある程度のシワの発生抑止には
有効である。そして、以上のように充填部7に注入され
た発泡材が発泡して硬化すると、型から成形品を取出す
。By the way, it has been found that the above-described foaming molds 2 and 3 can also be applied to the skin 5 without the ridges 10 formed thereon. It is presumed that this is because the shaped portion 11 provided on the lower mold 3 acts as a relief portion for the skin that is about to shift. That is, the elongation of the epidermis 5 that tends to shift is absorbed by the shaped portion 11, which has the effect of blocking force from acting downward, and is effective in suppressing wrinkles to some extent. Then, when the foaming material injected into the filling portion 7 as described above foams and hardens, the molded product is removed from the mold.
【0012】0012
【発明の効果】以上のように本発明の表皮一体発泡成形
品の製造方法は、発泡型の型閉め時に生ずるシワの発生
位置を適切な位置にコントロ−ル出来、又シワの発生量
を減らすことが出来るため、製品の外観品質を低下させ
ず、又、製品不良率を引き下げることが出来る。[Effects of the Invention] As described above, the method of manufacturing a skin-integrated foam molded product of the present invention can control the position of wrinkles that occur when closing a foam mold to an appropriate position, and can also reduce the amount of wrinkles. Therefore, the appearance quality of the product is not deteriorated and the product defect rate can be reduced.
【図1】本発明の製造方法に用いる発泡型の縦断面図[Fig. 1] Longitudinal cross-sectional view of a foaming mold used in the manufacturing method of the present invention
【
図2】図1のA部拡大図[
Figure 2: Enlarged view of part A in Figure 1
【図3】同部の従来例の説明図[Figure 3] Explanatory diagram of the conventional example of the same section
【図4】本発明の方法で製造される自動車のインストル
メントパネルの斜視図FIG. 4 is a perspective view of an automobile instrument panel manufactured by the method of the present invention.
【図5】図4のB−B線断面図[Figure 5] Cross-sectional view taken along line B-B in Figure 4
Claims (2)
閉め方向から傾斜した方向にシ−ル面を形成し、この型
内に発泡材料を注入して表皮一体の発泡成形品を成形す
るようにした製造方法において、前記表皮のシ−ル面近
傍に突条部を設けるとともに、発泡型には該突条部に対
応する形状の形状部を設け、この形状部と突条部を位置
合せして表皮をセットした後型内に発泡材料を注入し、
表皮の裏面に発泡層を一体に形成することを特徴とする
表皮一体発泡成形品の製造方法。[Claim 1] A sealing surface is formed in a direction inclined from the mold closing direction by a skin set in a foaming mold, and a foaming material is injected into this mold to mold a foam molded product with an integrated skin. In the manufacturing method, a protrusion is provided in the vicinity of the sealing surface of the skin, a shaped part having a shape corresponding to the protruding part is provided on the foam mold, and this shaped part and the protruding part are aligned. After setting the skin, foam material is injected into the mold.
A method for manufacturing a skin-integrated foam molded product, which comprises integrally forming a foam layer on the back side of the skin.
い表皮をセットすることを特徴とする請求項1に記載の
表皮一体発泡成形品の製造方法。2. The method for manufacturing a skin-integrated foam molded product according to claim 1, wherein a skin without molded protrusions is set in the foaming mold.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3069210A JP3011280B2 (en) | 1991-03-08 | 1991-03-08 | Manufacturing method of skin-integrated foam molded product |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3069210A JP3011280B2 (en) | 1991-03-08 | 1991-03-08 | Manufacturing method of skin-integrated foam molded product |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH04282209A true JPH04282209A (en) | 1992-10-07 |
JP3011280B2 JP3011280B2 (en) | 2000-02-21 |
Family
ID=13396134
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3069210A Expired - Fee Related JP3011280B2 (en) | 1991-03-08 | 1991-03-08 | Manufacturing method of skin-integrated foam molded product |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3011280B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20030083387A (en) * | 2002-04-22 | 2003-10-30 | 현대자동차주식회사 | Vacuum pad structure for transferring work |
-
1991
- 1991-03-08 JP JP3069210A patent/JP3011280B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20030083387A (en) * | 2002-04-22 | 2003-10-30 | 현대자동차주식회사 | Vacuum pad structure for transferring work |
Also Published As
Publication number | Publication date |
---|---|
JP3011280B2 (en) | 2000-02-21 |
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