JPH0363493B2 - - Google Patents
Info
- Publication number
- JPH0363493B2 JPH0363493B2 JP16402984A JP16402984A JPH0363493B2 JP H0363493 B2 JPH0363493 B2 JP H0363493B2 JP 16402984 A JP16402984 A JP 16402984A JP 16402984 A JP16402984 A JP 16402984A JP H0363493 B2 JPH0363493 B2 JP H0363493B2
- Authority
- JP
- Japan
- Prior art keywords
- skin
- mold
- molded product
- sheet
- resin
- 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
Links
- 238000000034 method Methods 0.000 claims description 28
- 229920005989 resin Polymers 0.000 claims description 24
- 239000011347 resin Substances 0.000 claims description 24
- 239000004744 fabric Substances 0.000 claims description 23
- 229920003002 synthetic resin Polymers 0.000 claims description 18
- 239000000057 synthetic resin Substances 0.000 claims description 18
- 238000000465 moulding Methods 0.000 claims description 16
- 238000001746 injection moulding Methods 0.000 claims description 15
- 238000004804 winding Methods 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 238000005096 rolling process Methods 0.000 claims description 6
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 4
- 239000004800 polyvinyl chloride Substances 0.000 claims description 4
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 3
- 210000003491 skin Anatomy 0.000 description 51
- 239000000463 material Substances 0.000 description 37
- 239000000047 product Substances 0.000 description 22
- 239000004743 Polypropylene Substances 0.000 description 10
- 230000001070 adhesive effect Effects 0.000 description 9
- 238000002347 injection Methods 0.000 description 9
- 239000007924 injection Substances 0.000 description 9
- 239000000853 adhesive Substances 0.000 description 8
- 238000005520 cutting process Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 230000004927 fusion Effects 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 3
- 210000002615 epidermis Anatomy 0.000 description 3
- 239000010985 leather Substances 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 229920005672 polyolefin resin Polymers 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000007799 cork Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 238000010107 reaction injection moulding Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 238000007666 vacuum forming Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- 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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
- B29C45/14196—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure the inserts being positioned around an edge of the injected part
Description
【発明の詳細な説明】
発明の目的
（産業上の利用分野）
この発明は自動車内装品、屋内装置品等の各種
合成樹脂形品の製造方法に係り、詳しくはその表
面に形成されている表皮張り成形品の製造方法に
関するものである。[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) The present invention relates to a method for manufacturing various synthetic resin molded products such as automobile interior parts and indoor equipment parts, and more specifically, the invention relates to a method for manufacturing various synthetic resin molded products such as automobile interior parts and indoor equipment parts. The present invention relates to a method for manufacturing a stretched molded product.
（従来の技術）
自動車用内装品、屋内装置品等の各種合成樹脂
成形品においては、優れた外観を付与するととも
に、樹脂表面の傷、むら等の欠陥を隠すために、
表面に別材による装飾を施すことが有用である。(Prior Art) In various synthetic resin molded products such as automobile interior parts and indoor equipment products, in order to provide an excellent appearance and hide defects such as scratches and unevenness on the resin surface,
It is useful to decorate the surface with a separate material.
従来、この表皮張り成形品の製造方法の一つ
に、真空成形によつて型付けした表皮を樹脂成形
品の表面に貼るという方法があつたが、貼り合せ
工程や接着剤が必要になるという問題があつた。
更に、樹脂成形品がポリプロピレン等の非極性樹
脂材料にて形成されたものであるとき、接着剤の
非極性材料に対する結合力はあまり高くないた
め、表皮が剥離し易いという問題があつた。 Conventionally, one of the methods for manufacturing skin-covered molded products was to attach a molded skin by vacuum forming to the surface of a resin molded product, but this method had the problem of requiring a bonding process and an adhesive. It was hot.
Furthermore, when the resin molded article is made of a non-polar resin material such as polypropylene, the bonding strength of the adhesive to the non-polar material is not very high, so there is a problem that the skin is likely to peel off.
また、別の製造方法として、近年、表皮の裏面
側に合成樹脂を射出成形により一体的に形成させ
る方法が用いられつつある。 In addition, as another manufacturing method, a method of integrally forming a synthetic resin on the back side of the outer skin by injection molding has recently been used.
ところが、この方法も成形品を金型から取り出
した後、成形品の端末部における表皮の後処理工
程として、成形品の端部に沿つて表皮を栽断す
る端末カツト工程、成形品の端末よりも表皮を
やや大きめに栽断した後、表皮を成形品裏面側に
巻き込みながら接着する巻き込み工程等が必要と
なる。 However, in this method, after the molded product is removed from the mold, as a post-treatment process for the skin at the end of the molded product, there is an end cutting process in which the skin is cut along the end of the molded product, and a post-treatment process for the skin at the end of the molded product is performed. However, after cutting the skin into slightly larger pieces, a wrapping process is required in which the skin is rolled up and bonded to the back side of the molded product.
また、前記端末カツト工程のみを行ない巻き込
み工程を省略した場合には栽断面が外観上見えた
り、裁断のバラツキによつて表皮端末部が蛇行し
たり、特に表皮が布の場合、布の栽断部にほつれ
た糸が表われ外観上見苦しい等の問題があつた。
前記巻き込み工程を行なつた場合には上記不具合
は生じないが、表皮を巻き込むために、治具を用
いるとともに手作業にて行なうため大変手間を要
するという問題があつた。 In addition, if only the end cutting process is performed and the winding process is omitted, the cutting surface may be visible in appearance, the end part of the skin may become meandering due to variations in cutting, and especially when the skin is cloth, cutting of the cloth may result. There were problems such as frayed threads appearing on the parts and making it look unsightly.
When the above-mentioned rolling-in step is performed, the above-mentioned problems do not occur, but there is a problem in that a jig is used and the process is carried out manually, which requires a lot of effort.
（発明が解決しようとする問題点）
この発明は上述したような、表皮貼り合わせの
工程や接着剤が必要となる。表皮がはがれ易い、
射出成形により表皮と合成樹脂とを一体的に形成
した際に成形品端末部における表皮の後処理工程
に手間を要する、等の問題点を解決しようとする
ものである。(Problems to be Solved by the Invention) This invention requires the skin bonding process and adhesive as described above. The epidermis peels off easily,
This is an attempt to solve problems such as when a skin and a synthetic resin are integrally formed by injection molding, the post-treatment process of the skin at the end of the molded product requires time and effort.
発明の構成
（問題点を解決するための手段）
この発明は上記問題点を解決するために成形凹
部９を有する金型のパーテイングライン６に、同
成形凹部９の開口縁より内方へ縮小した開口部１
１を有する巻き込み部材３を取着し、同金型に表
皮２１をセツトする工程と、同金型に他の金型を
型合せする工程と、表皮２１裏面側に合成樹脂を
射出成形して表皮２１を巻き込み部材３と金型の
成形凹部９との境に巻き込みながら同射出成形を
進行させる工程と、合成樹脂の硬化後型開きして
成形品を取出す工程とからなるという方法を採つ
ている。Structure of the Invention (Means for Solving the Problems) In order to solve the above problems, the present invention reduces the parting line 6 of the mold having the molding recess 9 inwardly from the opening edge of the molding recess 9. opening 1
1, and setting the outer skin 21 in the same mold, fitting another mold to the same mold, and injection molding a synthetic resin on the back side of the outer skin 21. A method is adopted that consists of a step of advancing the injection molding while rolling the skin 21 into the boundary between the rolling member 3 and the molding recess 9 of the mold, and a step of opening the mold after the synthetic resin has hardened to take out the molded product. There is.
（作用）
可動型に収着された巻き込み部材に表皮をセツ
トし、型合せするとともに表皮裏面側に合成樹脂
を射出成形する。すると、表皮は射出圧力によつ
て成形凹部の型面に押付けられるとともに、同成
形凹部の端部において巻き込み部材と成形凹部と
の境で巻き込まれながら基材と表皮とが一体的に
形成される。(Function) The skin is set on the winding member absorbed by the movable mold, the molds are matched, and synthetic resin is injection molded on the back side of the skin. Then, the skin is pressed against the mold surface of the molding recess by injection pressure, and the base material and the skin are integrally formed at the end of the molding recess while being rolled up at the boundary between the rolling member and the molding recess. .
（実施例）
次に、この発明を樹脂成形品の一つである自動
車のセンターピラー内装材を射出成形により製造
する方法に具体化した一実施例について、第１〜
８図に従つて説明する。(Example) Next, we will discuss an example in which the present invention is embodied in a method for manufacturing an automobile center pillar interior material, which is one of the resin molded products, by injection molding.
This will be explained according to FIG.
まず、この実施例の主要部をなす金型の構成に
ついて説明する。この金型は固定型１と可動型２
とからなる通常一般に用いられている射出成形用
金型であるが、射出成形と同時に表皮２１を合成
樹脂よりなる基材２２の裏面側に巻き込むため
に、第１，２図に示すように板状の巻き込み部材
３が可動型２に取着されている。 First, the structure of the mold, which is the main part of this embodiment, will be explained. This mold consists of fixed mold 1 and movable mold 2.
This is a commonly used injection mold, but in order to roll the skin 21 onto the back side of the base material 22 made of synthetic resin at the same time as the injection molding, a plate is used as shown in Figures 1 and 2. A winding member 3 having a shape is attached to the movable mold 2.
更に詳しく述べると、前記固定型１の型裏面側
（第２図においては左側を示す）にはノズル当接
部５が設けられており、同当接部５側面からパー
テイングライン６に設けられた成形凸部７に向つ
てスプルー８が透設されている。 More specifically, a nozzle contact portion 5 is provided on the back side of the fixed mold 1 (the left side is shown in FIG. 2), and a nozzle contact portion 5 is provided from the side surface of the contact portion 5 to the parting line 6. A sprue 8 is transparently provided toward the molded convex portion 7.
前記可動型２のパーテイングライン６には成形
凹部９が設けられており、更に、巻き込み部材３
が取着されている。また、可動型２では油圧等に
より固定型１に型合せ可能に移動する機構（図示
しない）が設けられている。 A molding recess 9 is provided in the parting line 6 of the movable mold 2, and a winding member 3 is further provided.
is attached. Furthermore, the movable mold 2 is provided with a mechanism (not shown) that moves it to the fixed mold 1 using hydraulic pressure or the like so that the mold can be matched with the fixed mold 1.
前記巻き込み部材３の外形は可動型２と同じ大
きさの長四角形状をなす板状に形成されており、
その中央部には可動型２の成形凹部９の開口縁よ
りも全周にわたつて均一の中で内方へ縮小された
開口部１１が設けられている。いま、前記開口部
１１は型合せの際に生ずるキヤビテイ１０内方に
2.5mm程度の長さで突出するが、この突出部分を
開口端部１２という。従つて、同開口端部１２と
成形凸部７との間隔は局所的に狭くなるようにな
つている。 The outer shape of the winding member 3 is formed into a rectangular plate shape with the same size as the movable mold 2,
An opening 11 is provided in the center of the movable mold 2, which is uniform over the entire circumference and smaller inward than the opening edge of the molding recess 9 of the movable mold 2. Now, the opening 11 is located inside the cavity 10 that is created during mold matching.
It protrudes with a length of about 2.5 mm, and this protruding portion is called the open end portion 12. Therefore, the distance between the open end 12 and the molded convex portion 7 is locally narrowed.
次に、この射出成形用金型を用いてセンターピ
ラー内装材を製造する方法を説明する。 Next, a method for manufacturing a center pillar interior material using this injection mold will be described.
まず、表面に本皮調のシボ模様が設けられてい
るポリ塩化ビニル樹脂（以下PVC樹脂という）
製のシート２４の裏面に、接着剤２５を塗布した
上、ポリエステル繊維糸よりなる平織布２６を接
着させ、表皮２１を形成する。また、同シート２
４は少なくとも裏面側が透視されがたい程度に着
色されて不透明になつており、溶融した樹脂が浸
透しない程度の無孔性を有している。 First, polyvinyl chloride resin (hereinafter referred to as PVC resin) has a leather-like grain pattern on its surface.
An adhesive 25 is applied to the back surface of a sheet 24 made of a polyester resin, and a plain woven cloth 26 made of polyester fiber yarn is adhered thereto to form a skin 21. Also, the same sheet 2
No. 4 has at least the back side colored and opaque to such an extent that it is difficult to see through, and is non-porous to the extent that molten resin does not penetrate therethrough.
次に、同表皮２１を前記内装材の形状に対応す
るように大きめにトリミング加工した後、シート
２４が可動型２側となるように前記巻き込み部材
３に配置する。配置方法は第３図（作図を簡単に
するため表皮２１の構造を省略した第４，５図も
同様である。）に示すように、前記表皮２１の両
端を可動型２と同様に移動するクランプ（図示し
ない）で挾持するとともに巻き込み部材３上に配
置する。 Next, the skin 21 is trimmed to a larger size so as to correspond to the shape of the interior material, and then placed on the winding member 3 so that the sheet 24 faces the movable mold 2 side. The arrangement method is to move both ends of the skin 21 in the same way as the movable mold 2, as shown in FIG. It is held by a clamp (not shown) and placed on the winding member 3.
続いて、可動型２を移動させ型合せして溶融し
たポリプロピレン樹脂（以下P.P樹脂という）を
射出成形すれば、表皮２１が射出圧力によつて可
動型２の成形凹部９の型面に押し付けられると同
時に、布２６の裏面に基材２２が一体的に形成さ
れる。 Next, when the movable mold 2 is moved and the molds are aligned and molten polypropylene resin (hereinafter referred to as PP resin) is injection molded, the skin 21 is pressed against the mold surface of the molding recess 9 of the movable mold 2 by injection pressure. At the same time, the base material 22 is integrally formed on the back surface of the cloth 26.
また、表皮２１が前記巻き込み部材３の開口端
部１２に引掛つた状態で型合せされているため、
型合せ後の表皮２１は第４図に示すように、キヤ
ビテイ１０内方に突出した開口端部１２に引掛り
キヤビテイ端部１０ａまで接することなく、その
部分で浮いた状態になつている。このため、P.P
樹脂が射出されると表皮２１は第５図に示すよう
に、射出圧力により伸びて成形凹部９の型面に押
付けられる。その結果、表皮２１はキヤビテイ端
部１０ａにおいて、形成される基材２２の裏面側
まで回り込んだ状態で基材２２と一体化される。 In addition, since the skin 21 is fitted with the open end 12 of the winding member 3,
As shown in FIG. 4, the skin 21 after mold matching is caught on the open end 12 protruding inward of the cavity 10, and is in a floating state at that portion without touching the cavity end 10a. For this reason, P.P.
When the resin is injected, the skin 21 is expanded by the injection pressure and pressed against the mold surface of the molding recess 9, as shown in FIG. As a result, the skin 21 is integrated with the base material 22 at the cavity end 10a in a state where it wraps around to the back side of the base material 22 to be formed.
次に、可動型３を移動させ型開きし、表皮２１
と基材２２とが一体化され、かつ、基材２２の裏
面側に表皮２１が巻き込まれたセンターピラー内
装材を取出す。続いて、同内装材の端末部におけ
る表皮２１後処理工程として、第６図に示すよう
に基材２２裏面側の表皮折り返し部２７でトリミ
ングカツター２８等を用いて不用な表皮２１を裁
断する。以上により本実施例の全ての工程が終了
する。 Next, the movable mold 3 is moved to open the mold, and the epidermis 21 is
The center pillar interior material in which the and base material 22 are integrated and the skin 21 is wound around the back side of the base material 22 is taken out. Subsequently, as a post-processing step for the skin 21 at the end portion of the interior material, as shown in FIG. 6, the unnecessary skin 21 is cut off at the skin folded part 27 on the back side of the base material 22 using a trimming cutter 28 or the like. . With the above steps, all the steps of this embodiment are completed.
ここで、上述した工程により製造されたセンタ
ーピラー内装材の状態を第７図に示し説明する
と、前記の通り表皮２１の裏面側には基材２２が
一体的に形成されており、その端部において同表
皮２１が基材２２裏面側に巻き込まれている。 Here, the state of the center pillar interior material manufactured by the above-mentioned process is shown in FIG. 7 and explained. As mentioned above, the base material 22 is integrally formed on the back side of the skin 21, and the end portion The skin 21 is wrapped around the back side of the base material 22.
この基材２２の布２６に対する境界部分は成形
時の射出圧力によつて、第８図に示すように布２
６の糸間に浸透した後に硬化している。また、射
出成形時の熱によりP.P樹脂が糸の一部を溶かし
てこれと融合する。従つて、布２６と基材２２の
間には接着剤が用いられていないにもかかわらず
布２６は基材２２に対し、機械的なアンカー効果
や融合によつて強固に接合される。 Due to the injection pressure during molding, the boundary between the base material 22 and the cloth 26 is formed as shown in FIG.
It hardens after penetrating between the threads of No. 6. Additionally, the heat generated during injection molding causes the PP resin to melt some of the threads and fuse with them. Therefore, although no adhesive is used between the cloth 26 and the base material 22, the cloth 26 is firmly joined to the base material 22 by mechanical anchoring or fusion.
以上のように構成された実施例においては、射
出成形と同時に表皮２１が基材２２裏面側に巻き
込まれた状態で前記内装材が形成されることによ
り、外観に見えないところで簡単に表皮２１の後
処理ができる。このため、同内装材の端末部にお
ける巻き込み工程を不用とすることができるばか
りでなく、内装材の端末部形状も良くなり、外観
上好ましいものとなる。 In the embodiment configured as described above, the interior material is formed with the skin 21 wrapped around the back side of the base material 22 at the same time as injection molding, so that it is easy to remove the skin 21 in a place that cannot be seen from the outside. Post-processing is possible. Therefore, not only can the winding process at the end of the interior material be unnecessary, but also the shape of the end of the interior material can be improved, resulting in a favorable appearance.
また、表面のシート２４によつて、本皮調の優
れた外観が得られる。 Furthermore, the surface sheet 24 provides an excellent appearance similar to real leather.
また、布２６は基材２２に対して機械的なアン
カー効果や融合で強固に接合されているため、シ
ート２４及び布２６に多少の外力が加わつても剥
離したり、破損したりすることがない。特にP.P
樹脂は極性基をもたず、接着力が低いため、接着
剤を用いなくても高い接合力の得られる本実施例
が有効である。 In addition, since the cloth 26 is firmly bonded to the base material 22 by mechanical anchoring or fusion, it will not peel off or be damaged even if some external force is applied to the sheet 24 and the cloth 26. do not have. Especially PP
Since the resin does not have a polar group and has low adhesive strength, this embodiment is effective because it can provide high bonding strength without using an adhesive.
また、表皮２１は基材２２に対して射出成形と
同時に接合されるので、工程が少なく、コストも
低減される。 Further, since the skin 21 is bonded to the base material 22 at the same time as injection molding, the number of steps is reduced and costs are reduced.
また、基材２２のP.P樹脂が布２６の糸間に浸
透した場合でも、本実施例ではその浸透したP.P
樹脂はシート２４によつて確実に隠されるため、
外部から傷やむらとして見えることはない。 Furthermore, even if the PP resin of the base material 22 permeates between the threads of the cloth 26, in this embodiment, the permeated PP resin
Since the resin is reliably hidden by the sheet 24,
There are no visible scratches or unevenness from the outside.
上記のように、浸透したP.P樹脂はシート２４
によつて隠されるので布２６はどのような布目、
厚さ、密度、糸等を有する布（織布、不織布を問
わない）であつても良い。 As mentioned above, the infiltrated PP resin is
What kind of texture does the cloth 26 have?
It may be a cloth (whether woven or non-woven) having thickness, density, yarn, etc.
第二実施例
次に、本発明の第二実施例を第９図に従つて説
明すると、この実施例は前記シート２４のかわり
にウレタン樹脂を発泡させてなるシート３１を用
いた点において前記実施例と相違している。Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIG. 9. This embodiment differs from the embodiment described above in that a sheet 31 made of foamed urethane resin is used instead of the sheet 24. It differs from the example.
すなわち、センターピラー内装材の表面には発
泡シート３１が設けられており、この発泡シート
３１は発泡による空気の内在により、裏面側が透
視されがたい程度になつている。また、前記シー
ト３１の裏面側にはポリエステル繊維糸よりなる
平織布２６が熱溶着されている。 That is, a foamed sheet 31 is provided on the surface of the center pillar interior material, and the foamed sheet 31 contains air due to foaming, so that the back side is difficult to see through. Further, a plain woven cloth 26 made of polyester fiber yarn is thermally welded to the back side of the sheet 31.
従つて、この実施例も第一実施例と同様の効果
を奏する外、次のような作用効果がある。 Therefore, this embodiment also has the following effects in addition to the same effects as the first embodiment.
表面の発泡シート２８によつて、ソフトな手触
り感が得られるばかりでなく優れた外観を呈し、
合成樹脂表面の傷、むら等の欠陥も穏される。 The foam sheet 28 on the surface not only provides a soft touch, but also provides an excellent appearance.
Defects such as scratches and unevenness on the surface of the synthetic resin are also alleviated.
なお、本発明は前記実施例に限定されるもので
はなく、例えば次のように具体化することも可能
である。 Note that the present invention is not limited to the above-mentioned embodiments, and can be embodied as follows, for example.
(1) 前記表皮２１の組合せは、前記実施例に限定
されるものでなく、例えば本皮、布、布の表面
に加飾層としてのパイル植毛を施したもの、布
の表面に発泡シートを設け更に、その表面にパ
イル植毛を施したもの等が表皮を用いることが
できる。(1) The combination of the skin 21 is not limited to the above examples, and may include, for example, genuine leather, cloth, a cloth with pile flocking as a decorative layer on the surface, and a foam sheet on the cloth surface. Further, it is possible to use an epidermis whose surface is covered with pile hair.
(2) 本実施例においては、センターピラー内装材
の全周にわたつて表皮２１が巻き込まれて形成
されているが、全周巻き込む必要はなく外観上
好ましい箇所だけ部分的に巻き込んでも良い。
そのためには、前記巻き込み部材３の開口部１
１の形状を変えれば良い。(2) In this embodiment, the skin 21 is formed by being rolled around the entire circumference of the center pillar interior material, but it is not necessary to wrap it around the entire circumference, and it may be rolled up only partially in areas that are preferable for appearance.
For this purpose, the opening 1 of the winding member 3 is
Just change the shape of 1.
(3) 本実施例の巻き込み部材３は板状に限定され
るものではなく、表皮２１を巻き込んで形成し
たい所のみに成形凹部９の内方向に突出する凸
部を設け、他方の型に前記凸部と対向する凹部
を設けても良い。(3) The rolling member 3 of this embodiment is not limited to a plate shape, and a convex part that protrudes inward of the molding recess 9 is provided only in the part where the skin 21 is to be rolled up and formed, and the A concave portion facing the convex portion may be provided.
(4) 表皮２１のセツト方法は本実施例の方法に限
定されるものでなく、例えば、表皮２１をロー
ル状にして、連続的に巻き込み部材３にセツト
するようにしても良い。(4) The method of setting the skin 21 is not limited to the method of this embodiment; for example, the skin 21 may be made into a roll and continuously set on the winding member 3.
(5) 前記開口端部１２の形状は本実施例において
は長四角形状であるが、この形状に限定される
ものではなく、例えば第１０図ａ，ｂに示すよ
うに先端部を断面円弧状、断面先鋭三角形状に
しても良い。また、三角形状にした場合、その
先端部が裁断具の役割をはたし射出成形と同時
に表皮２１を栽断することができる
(6) シート２４は少なくとも裏面側が透視されが
たい程度に不透明なものであれば、どのような
ものを用いてもよい。例えば、前出のPVC樹
脂シートを始め、ウレタン樹脂シート、コルク
シート、本皮等を任意に使用することができ
る。(5) The shape of the opening end 12 is a rectangular shape in this embodiment, but it is not limited to this shape. For example, as shown in FIGS. , the cross section may have a pointed triangular shape. In addition, when the sheet 24 is made into a triangular shape, its tip serves as a cutting tool and can cut the skin 21 at the same time as the injection molding. Any material may be used as long as it is suitable. For example, the aforementioned PVC resin sheet, urethane resin sheet, cork sheet, real leather, etc. can be used as desired.
ポリオレフイン系樹脂に対する接着性の良く
ない表皮を用いる場合は、高い接合力の得られ
る本発明が特に有効である。 When using a skin that does not have good adhesion to polyolefin resins, the present invention, which provides high bonding strength, is particularly effective.
(7) シート２４にはシボ模様以外にも、図柄、木
目模様、ラメ調微細模様等、任意の模様を設け
ることができる。(7) In addition to the grain pattern, the sheet 24 can be provided with any pattern such as a design, a wood grain pattern, a lame-like fine pattern, etc.
(8) 前述したように布２６はポリエステル繊維糸
よりなる平織布に限定されず、どのような布
目、厚さ、密度、糸種等を有する布（織布、不
織布を問わない）を用いてもよい。この布目、
厚さ、密度等によつて、合成樹脂の浸透の程度
が異なり、不織布を使用した場合には、繊維間
に合成樹脂が浸透することになる。また、糸の
種類や射出温度等の条件によつて、合成樹脂と
の融合の有無又は程度が異なる。(8) As mentioned above, the cloth 26 is not limited to a plain woven cloth made of polyester fiber yarn, but any cloth (whether woven or non-woven) having any grain, thickness, density, yarn type, etc. can be used. It's okay. This texture,
The degree of penetration of the synthetic resin varies depending on the thickness, density, etc., and when a nonwoven fabric is used, the synthetic resin will penetrate between the fibers. Furthermore, the presence or absence of fusion with the synthetic resin and the degree of fusion differ depending on conditions such as the type of thread and the injection temperature.
(9) 布２６の裏面を起毛させることによつて、基
材２２の布２６に対するアンカー効果が高くな
り、接合性を向上させることができる。(9) By raising the back surface of the cloth 26, the anchoring effect of the base material 22 to the cloth 26 is enhanced, and the bondability can be improved.
(10) 基材２２を構成する合成樹脂は前記P.P樹脂
に限定されず、ポリエチレン（PE）樹脂、ポ
リスチレン（PS）樹脂、ABS樹脂、メチルメ
タアクリレート（PMMA）樹脂、ポリウレタ
ン樹脂その他の各種合成樹脂を任意に使用しう
る。(10) The synthetic resin constituting the base material 22 is not limited to the above-mentioned PP resin, but may include polyethylene (PE) resin, polystyrene (PS) resin, ABS resin, methyl methacrylate (PMMA) resin, polyurethane resin, and other various synthetic resins. can be used arbitrarily.
特に、極性基を持たず、接着性が低いP.P樹
脂、PE樹脂等のポリオレフイン系樹脂を用い
る場合には、接着剤がなくても高い接合力の得
られる本発明が有効である。 In particular, when using polyolefin resins such as PP resins and PE resins that do not have polar groups and have low adhesive properties, the present invention is effective because high bonding strength can be obtained even without an adhesive.
(11) 本発明において、射出成形の語は反応射出成
形も含む包括的な射出成形を意味している。(11) In the present invention, the term injection molding means a comprehensive injection molding including reaction injection molding.
(12) この発明はセンターピラーの内装品以外に
も、自動車のドアの内張り、天井材、インスト
ルメントパネル等の自動車用内装品を始め、家
具、建具、壁材等の各種表皮張り成形品の製造
方法として具体化することができる。(12) In addition to interior products for center pillars, this invention can also be applied to automotive interior products such as car door linings, ceiling materials, and instrument panels, as well as various skin-lined molded products such as furniture, fittings, and wall materials. It can be embodied as a manufacturing method.
発明の効果
以上詳述したように、本発明により成形と同時
に表皮が基材裏面側に巻き込まれた状態で成形品
が形成されることになり、外観に見えないところ
で簡単に表皮栽断処理ができるとともに、成形品
の端末部形状が良くなり外観上好ましくなるばか
りでなく、作業工程数も減らすことができ、ひい
ては、生産コストも低減することができるという
優れた効果を奏する。Effects of the Invention As detailed above, according to the present invention, a molded product is formed with the skin wrapped around the back side of the base material at the same time as molding, and the skin can be easily chopped in a place that is not visible from the outside. This not only improves the shape of the end of the molded product and improves its appearance, but also reduces the number of work steps and, in turn, reduces production costs.
第１図は本発明の主要部をなす金型の型開き状
態を示す斜視図、第２図は第１図の断面図、第３
図は同じく表皮を金型にセツトしたときを示す断
面図、第４図は型合せしたときのキヤビテイ内の
表皮の状態を示す断面図、第５図は射出成形途中
の状態を示す断面図、第６図は金型から取出した
成形品の余分な表皮を裁断するときを示す断面
図、第７図は本実施例の表皮張り成形品を示す断
面図、第８図は同じく要部拡大図、第９図は他の
実施例を示す断面図、第１０図ａ，ｂはそれぞれ
巻き込み部材の開口端部における形状の別例を示
す断面図である。
巻き込み部材３、成形溝凹部９、パーテイング
ライン６、表皮２１、開口部１１。
Fig. 1 is a perspective view showing the open state of the mold which constitutes the main part of the present invention, Fig. 2 is a sectional view of Fig. 1, and Fig. 3 is a sectional view of Fig. 1.
The figure is a cross-sectional view showing the skin set in the mold, Figure 4 is a cross-sectional view showing the state of the skin inside the cavity when the molds are matched, and Figure 5 is a cross-sectional view showing the state during injection molding. Fig. 6 is a cross-sectional view showing when the excess skin of the molded product taken out from the mold is cut, Fig. 7 is a cross-sectional view showing the skin-covered molded product of this example, and Fig. 8 is an enlarged view of the main parts. 9 is a sectional view showing another embodiment, and FIGS. 10a and 10b are sectional views showing other examples of the shape of the opening end of the winding member. The winding member 3, the molding groove recess 9, the parting line 6, the skin 21, and the opening 11.
Claims (1)
ン６に、同成形凹部９の開口縁より内方へ縮小し
た開口部１１を有する巻き込み部材３を取着し、
同金型に表皮２１をセツトする工程と、同金型に
他の金型を型合せする工程と、表皮２１裏面側に
合成樹脂を射出成形して表皮２１を巻き込み部材
３と金型の成形凹部９との境に巻き込みながら同
射出成形を進行させる工程と、合成樹脂の硬化後
型開きして成形品を取出す工程とからなることを
特徴とする表皮張り成形品の製造方法。 ２ 前記巻き込み部材３は可動型２のパーテイン
グライン６に取着され、その開口部１１は可動型
２の成形凹部９の縁よりも全周にわたつて１〜５
mmの巾で内方に向つて突出する開口端部１２を有
し、全体が可動型２と同じ大きさの板状に形成さ
れていることを特徴とする特許請求の範囲第１項
記載の表皮張り成形品の製造方法。 ３ 前記表皮２１の表面にシボ模様が設けられた
ポリ塩化ビニル樹脂製のシート２４と、その裏面
側に取着された布２６とからなることを特徴とす
る特許請求の範囲第１項記載の表皮張り成形品の
製造方法。 ４ 前記表皮２１は表面にウレタン樹脂を発泡さ
せてなるシート３１と、裏面側に取着された布２
６とからなることを特徴とする特許請求の範囲第
１項記載の表皮張り成形品の製造方法。[Claims] 1. Attaching a winding member 3 having an opening 11 that is smaller inward from the opening edge of the molding recess 9 to the parting line 6 of the mold having the mold recess 9,
A step of setting the skin 21 in the same mold, a step of fitting another mold into the same mold, and a step of injection molding a synthetic resin on the back side of the skin 21 and rolling the skin 21 into it, forming the member 3 and the mold. A method for manufacturing a skin-covered molded product, comprising the steps of: advancing the injection molding while rolling the synthetic resin into the boundary with the recess 9; and opening the mold after the synthetic resin has hardened to take out the molded product. 2 The winding member 3 is attached to the parting line 6 of the movable mold 2, and its opening 11 extends from 1 to 5 over the entire circumference from the edge of the molding recess 9 of the movable mold 2.
Claim 1, characterized in that it has an open end 12 projecting inward with a width of mm, and is entirely formed in a plate shape of the same size as the movable mold 2. A method for manufacturing a skin-covered molded product. 3. The sheet 24 according to claim 1, characterized in that the sheet 24 is made of polyvinyl chloride resin and the surface of the skin 21 is provided with a grain pattern, and a cloth 26 is attached to the back side of the sheet 24. A method for manufacturing a skin-covered molded product. 4 The skin 21 has a sheet 31 made of foamed urethane resin on the front surface, and a cloth 2 attached to the back surface.
6. A method for manufacturing a skin-lined molded product according to claim 1, characterized in that the method comprises:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16402984A JPS6141517A (en) | 1984-08-03 | 1984-08-03 | Manufacture of molded item with skin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16402984A JPS6141517A (en) | 1984-08-03 | 1984-08-03 | Manufacture of molded item with skin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6141517A JPS6141517A (en) | 1986-02-27 |
| JPH0363493B2 true JPH0363493B2 (en) | 1991-10-01 |
Family
ID=15785448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16402984A Granted JPS6141517A (en) | 1984-08-03 | 1984-08-03 | Manufacture of molded item with skin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6141517A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0753397B2 (en) * | 1990-12-19 | 1995-06-07 | 日本写真印刷株式会社 | Insert mold |
| US5110532A (en) * | 1991-03-04 | 1992-05-05 | Siebolt Hettinga | Method for molding a laminate |
| JP3136685B2 (en) * | 1991-09-10 | 2001-02-19 | 住友化学工業株式会社 | Molding method of multilayer molded product |
| FR2688442B1 (en) * | 1992-03-11 | 1995-08-18 | Renault | METHOD AND DEVICE FOR MOLDING AND FINISHING AN INTERIOR COVERING PART PROVIDED WITH A COVERING OF A MOTOR VEHICLE. |
-
1984
- 1984-08-03 JP JP16402984A patent/JPS6141517A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6141517A (en) | 1986-02-27 |
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