JPH0618727B2 - Manufacturing method of resin molded product with skin - Google Patents
Manufacturing method of resin molded product with skinInfo
- Publication number
- JPH0618727B2 JPH0618727B2 JP21388989A JP21388989A JPH0618727B2 JP H0618727 B2 JPH0618727 B2 JP H0618727B2 JP 21388989 A JP21388989 A JP 21388989A JP 21388989 A JP21388989 A JP 21388989A JP H0618727 B2 JPH0618727 B2 JP H0618727B2
- Authority
- JP
- Japan
- Prior art keywords
- skin
- molded product
- mold
- lower mold
- cavity
- 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
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は例えば自動車に装着されているインストルメン
トパネル、コンソールボックスの蓋、ピラー等の内装品
を成形するための表皮付き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 the production of a resin-molded product with a skin for molding interior parts such as instrument panels, console box lids, pillars, etc. mounted on automobiles. It is about the method.
［従来の技術］ 従来、表皮付き樹脂成形品を製造するためのスタンピン
グ成形用金型としては、第９図に示すようなものが知ら
れている。即ち、下端部の下部取付板２１上には、スペ
ーサブロック２２を介して第２下型２３が配置されてい
る。同第２下型２３上には、第１下型２４が配置され、
同第１下型２４はスプリング２５によって上方に押上げ
られている。[Prior Art] Conventionally, as a stamping molding die for manufacturing a resin-molded product with a skin, one shown in FIG. 9 is known. That is, the second lower mold 23 is arranged on the lower mounting plate 21 at the lower end portion via the spacer block 22. The first lower mold 24 is arranged on the second lower mold 23,
The first lower mold 24 is pushed upward by a spring 25.
上記第１下型２４の上方には、上部取付板２６に固定さ
れた上型２７が配置されている。同上型２７の下部に
は、左右方向にスライド可能なスライドコア２８が支持
されている。そして、同上型２７、スライドコア２８及
び第２下型２３とから第９図に示すように、キャビティ
２９が形成されている。An upper die 27 fixed to an upper mounting plate 26 is arranged above the first lower die 24. A slide core 28 that is slidable in the left-right direction is supported on the lower portion of the mold 27. A cavity 29 is formed from the upper die 27, the slide core 28, and the second lower die 23, as shown in FIG.
そして、第９図に示すように、型開きの状態で、第２下
型２３上に溶融樹脂Ｒが注入されるとともに、その上に
予め成形された柔軟性を有する二層構造の表皮材Ｐ1 を
載置する。次に、第１０図に示すように、スライドコア
２８と一体となった上型２７を下降させて第１下型２４
に型締めする。続いて、さらに型締めを行い、第２下型
２３を上昇させると、溶融樹脂Ｒが押圧されて上記表皮
材Ｐ1 の下面を押し広げてその端部まで広がり、基材３
２を形成する。Then, as shown in FIG. 9, in the mold open state, the molten resin R is injected onto the second lower mold 23, and the skin material P having a two-layer structure having flexibility and preformed on the molten resin R is injected. Place 1 Next, as shown in FIG. 10, the upper die 27 integrated with the slide core 28 is lowered to move the first lower die 24.
Clamp to the mold. Subsequently, when the mold is further clamped and the second lower mold 23 is raised, the molten resin R is pressed to spread the lower surface of the skin material P 1 and spread it to the end thereof, and the base material 3
Form 2.
次に、スライドコア２８を後退させた後、第１図に示す
ように、上型２７を第１下型２４に対して型開きし、押
上ピン３０で成形品を押上げることによって成形品を取
り出す。そして、同成形品の端部を巻き込むことによっ
て所望の成形品が得られる。このようにして得られた成
形品としてのコンソールボックスの蓋は、第１３図に示
すように、溶融樹脂Ｒによって成形された基材３２の裏
面に裏蓋３３がビス３４によって固定され製品となる。Next, after retracting the slide core 28, as shown in FIG. 1, the upper mold 27 is opened with respect to the first lower mold 24, and the molded product is pushed up by the push-up pin 30 to form the molded product. Take it out. Then, a desired molded product is obtained by winding the end portion of the molded product. As shown in FIG. 13, the lid of the console box as a molded product thus obtained is a product in which the back lid 33 is fixed to the back surface of the base material 32 molded with the molten resin R by the screw 34. .
［発明が解決しようとする課題］ ところが、上記表皮付き樹脂成形品の製造方法において
は、第１２図に示すように、成形品には第１下型２４と
スライドコア２８で形成される型割り面（ＰＬ面）に沿
ったいわゆるたてバリと称されるバリ３１が発生する。
従って、成形品の端部を巻き込む際、成形品端部のライ
ンをきれいに仕上げることができず、外観が悪くなった
り、前記予め成形された表皮材Ｐ1 を基材３２から剥が
してバリ３１を削って仕上げるのも困難であるという問
題点があった。[Problems to be Solved by the Invention] However, in the above method for manufacturing a resin-molded article with skin, as shown in FIG. 12, the molded article has a mold split formed by the first lower mold 24 and the slide core 28. Burrs 31, which are so-called vertical burrs, are generated along the surface (PL surface).
Therefore, when the end of the molded product is rolled up, the line of the end of the molded product cannot be finished cleanly, resulting in a poor appearance, or by peeling the preformed skin material P 1 from the base material 32 to remove the burr 31. There was a problem that it was difficult to cut and finish.
本発明の目的は、最終製品の外観に優れ、得られる成形
品にバリが発生してもその仕上げが容易である表皮付き
樹脂成形品の製造方法を提供することにある。An object of the present invention is to provide a method for producing a resin molded product with a skin, which has an excellent final product appearance and is easy to finish even if burrs are generated in the resulting molded product.
［課題を解決するための手段］ 本発明は上記目的を達成するために、上壁と、同上壁か
ら屈曲して延びる側壁を有し、表面に表皮を備える表皮
付き樹脂成形品の製造方法において、成形品裏面のキャ
ビティ形成面を有する下型成形品表面のキャビティ形成
面を有する上型及び側壁端面のキャビティ形成面を有す
るスライドコアとからキャビティを形成するとともに、
前記スライドコアの先端部に前記側壁端面のキャビティ
形成面が延長されるような凸部を設け、前記下型の側壁
キャビティ形成面の端部に連続して前記凸部に対応する
凹部を設け、前記キャビティ内に予め賦形された表皮と
なる柔軟な表皮材を配置した後、上型と下型を型締め
し、スライドコアを前進させ、前記凸部と凹部の間に柔
軟な表皮材を挟持し、次いで下型と柔軟な表皮材との間
の前記キャビティ内に芯材となる硬質の熱可塑性樹脂か
らなる溶融樹脂を導入することによって同溶融樹脂を前
記表皮材に押圧し、積層した成形品を成形するという手
段を採用している。[Means for Solving the Problems] In order to achieve the above object, the present invention relates to a method for producing a resin-molded article with a skin, which has an upper wall and a side wall that is bent and extends from the upper wall and has a surface skin. A lower mold having a cavity forming surface on the back surface of the molded product, a cavity formed from an upper mold having a cavity forming surface on the surface of the molded product and a slide core having a cavity forming surface on the side wall end surface,
A protrusion is provided at the tip of the slide core such that the cavity forming surface of the side wall end face is extended, and a recess corresponding to the protrusion is provided continuously to the end of the side wall cavity forming face of the lower mold. After arranging a flexible skin material that becomes a pre-shaped skin in the cavity, the upper mold and the lower mold are clamped, the slide core is advanced, and a flexible skin material is provided between the convex portion and the concave portion. Then, the molten resin made of a hard thermoplastic resin that serves as the core material is introduced into the cavity between the lower mold and the flexible skin material, and the molten resin is pressed against the skin material and laminated. The method of molding a molded product is adopted.
［作用］ 上記手段を採用したことにより、上型を下型から離間し
た型開き状態で、予め賦形された所定形状の柔軟な表皮
材をキャビティ内に配置した後型閉めし、スライドコア
をスライドさせてさらに型締めし、次いで硬質の熱可塑
性樹脂からなる溶融樹脂を前記キャビティ内に導入し、
同溶融樹脂を前記柔軟な表皮材の内面にその端部まで押
し広げて積層する。このようにして得られた成形品は、
スライドコアの凸部と下型の凹部とで成形品の端部に発
生するバリがその大きさや方向を規制され、次いで上記
柔軟な表皮材を溶融樹脂によって成形される基材の端部
から内側に巻き込むことによって外観の良好な製品が得
られる。[Operation] By adopting the above means, in the mold open state in which the upper mold is separated from the lower mold, the preformed soft skin material having a predetermined shape is placed in the cavity, and then the mold is closed and the slide core is fixed. Slide and further mold clamping, then introduce molten resin consisting of hard thermoplastic resin into the cavity,
The molten resin is spread on the inner surface of the flexible skin material to the end thereof and laminated. The molded product thus obtained is
The size and direction of the burr generated at the end of the molded product are regulated by the convex part of the slide core and the concave part of the lower mold, and then the flexible skin material is molded from the end part of the base material formed by the molten resin. A product with a good appearance can be obtained by winding it in
［第１実施例］ 以下に本発明を具体化した一実施例を第１〜７図に基づ
いて説明する。[First Embodiment] An embodiment of the present invention will be described below with reference to FIGS.
第１図に示すように、下端部の下部取付板１上には、ス
ペーサブロック２を介して上下動可能な第２下型３が配
置されている。同第２下型３は断面凸状を有し、その突
状部３ａは第２下型３の上部に配置されている第１下型
４に設けられた貫通孔４ａ内に挿入されている。上記第
１下型４は前記スペーサブロック２の貫通孔２ａ及び第
２下型３の貫通孔３ｂ内に挿入されたスプリングによっ
て上方に付勢されている。As shown in FIG. 1, a second lower die 3 which is vertically movable via a spacer block 2 is arranged on the lower mounting plate 1 at the lower end. The second lower mold 3 has a convex cross section, and the protruding portion 3a is inserted into the through hole 4a provided in the first lower mold 4 arranged on the upper part of the second lower mold 3. . The first lower mold 4 is biased upward by a spring inserted in the through hole 2a of the spacer block 2 and the through hole 3b of the second lower mold 3.
上記第１下型４が同スプリング５によって押上げられた
とき、第２図に示すように、前記第２下型３と第１下型
４とで芯材となる硬質の熱可塑性樹脂からなる溶融樹脂
Ｒを注入するポット部６が形成される。この硬質の熱可
塑性樹脂としては、ポリプロピレン（ＰＰ）、アクリロ
ニトリルーブタジエン−スチレン共重合樹脂（ＡＢＳ樹
脂）等を使用することができる。上記第１下型４と第２
下型３とは、成形品裏面のキャビティ形成面を有してい
る。When the first lower die 4 is pushed up by the spring 5, as shown in FIG. 2, the second lower die 3 and the first lower die 4 are made of a hard thermoplastic resin as a core material. The pot portion 6 for injecting the molten resin R is formed. As the hard thermoplastic resin, polypropylene (PP), acrylonitrile-butadiene-styrene copolymer resin (ABS resin) or the like can be used. The first lower mold 4 and the second
The lower mold 3 has a cavity forming surface on the back surface of the molded product.
前記下部取付板１上の中央部には、押上板７が配置され
ている。前記第２下型３及び第１下型４には、それぞれ
挿通孔３ｃ，４ｃが設けられ、これら挿通孔３ｃ，４ｃ
内には、下端部が上記押上板７に支持された押上ピン８
が挿入されている。同押上ピン８は成形品Ｐ2 の成形後
に同成形品Ｐ2 を押上げて第１下型４から離型するよう
になっている。A push-up plate 7 is arranged at the center of the lower mounting plate 1. The second lower mold 3 and the first lower mold 4 are provided with through holes 3c and 4c, respectively.
Inside, there is a push-up pin 8 whose lower end is supported by the push-up plate 7.
Has been inserted. The push-up pin 8 is adapted to release the same molded article P 2 after molding of the molded article P 2 from the push-up Gaité first lower die 4.
前記第１下型４上には、上端部の上部取付板９に固定さ
れ、第１下型４と接離可能な上型１０が配置されてい
る。同上型１０は成形品表面のキャビティ形成面を有し
ている。そして、第１下型４と上型１０とで所定形状の
成形品Ｐ2 を成形するキャビティ１１を形成している。
同キャビティ１１内には、予め真空成形で賦形された表
皮を形成する柔軟な表皮材Ｐ1 が配置される。上記第１
下型４と上型１０の間には、油圧シリンダ１２によって
左右方向にスライド可能なスライドコア１３が上型１０
に固定された取付部材１４に支持されている。同スライ
ドコア１３は、成形品の側壁端面のキャビティ形成面を
有している。On the first lower mold 4, an upper mold 10 fixed to an upper mounting plate 9 at the upper end and capable of coming into contact with and separating from the first lower mold 4 is arranged. The mold 10 has a cavity forming surface on the surface of the molded product. Then, the first lower mold 4 and the upper mold 10 form a cavity 11 for molding a molded product P 2 having a predetermined shape.
In the cavity 11, a soft skin material P 1 that forms a skin that has been shaped by vacuum forming in advance is arranged. First above
Between the lower die 4 and the upper die 10, a slide core 13 slidable in the left-right direction by a hydraulic cylinder 12 is provided.
It is supported by a mounting member 14 fixed to. The slide core 13 has a cavity forming surface which is an end surface of a side wall of a molded product.
このスライドコア１３の内端部には、断面略台形状の凸
部１３ａが形成されている。同凸部１３ａは成形品Ｐ2
の側壁端面のキャビティ形成面が延長されるような形状
になっている。同凸部１３ａに対応する位置の第１下型
４には、同凸部１３ａに対応する形状の凹部４ｂが設け
られている。同凹部４ｂは、第１下型４の側壁キャビテ
ィ形成面の端部に連続して形成されている。これらスラ
イドコア１３の凸部１３ａと第１下型４の凹部４ｂによ
って、第５図に示すように、成形品Ｐ2 の端部に発生す
るバリの延びる方向を規制するようになっている。A convex portion 13 a having a substantially trapezoidal cross section is formed on the inner end of the slide core 13. The convex portion 13a is a molded product P 2
The cavity forming surface of the side wall end surface of the is extended. The first lower mold 4 at a position corresponding to the convex portion 13a is provided with a concave portion 4b having a shape corresponding to the convex portion 13a. The recess 4b is formed continuously with the end of the side wall cavity forming surface of the first lower mold 4. The protrusion 13a of the slide core 13 and the recess 4b of the first lower mold 4 are configured to regulate the extending direction of the burr generated at the end of the molded product P 2 , as shown in FIG.
上記のように構成されたスタンピング成形用金型を使用
して、表皮付き樹脂成形品を製造する方法について説明
する。A method for producing a resin-molded article with a skin using the stamping molding die configured as described above will be described.
第２図に示すように、まず上型１０を第１下型４から離
間させた型開き状態において、第１下型４をスプリング
５の作用により第２下型３に対して持ち上げる。この状
態で形成されるポット部６内に硬質の熱可塑性樹脂から
なる溶融樹脂Ｒを注入する。次いで、その上に予め成形
された発泡ポリプロピレンからなる表皮１５と軟質塩化
ビニル樹脂からなる外皮１６とが接着された二層構造の
柔軟性を有する表皮材Ｐ1 を載せる。なお、表皮１５と
して、布等を使用することもできる。As shown in FIG. 2, first, in a mold open state in which the upper die 10 is separated from the first lower die 4, the first lower die 4 is lifted with respect to the second lower die 3 by the action of the spring 5. Molten resin R made of a hard thermoplastic resin is injected into the pot portion 6 formed in this state. Then, a two-layered flexible skin material P 1 in which a skin 15 made of foamed polypropylene and a skin 16 made of soft vinyl chloride resin are bonded together is placed thereon. A cloth or the like may be used as the outer skin 15.
次に、第１図に示すように、上型１０を下降させて第１
下型４との間が閉じるように型閉めを行う。続いて、油
圧シリンダ１２を作動させてスライドコア１３を前進さ
せる。そして、スライドコア１３先端部の凸部１３ａを
第１下型４の凹部４ｂに係合させる。このとき、表皮材
Ｐ1 はキャビティ１１の成形面から延長されるように設
けられた凸部１３ａの上面１３ｃと凹部４ｂの下面４ｄ
との間で強く挟持された状態となる。Next, as shown in FIG. 1, the upper die 10 is lowered to
The mold is closed so that the space between it and the lower mold 4 is closed. Then, the hydraulic cylinder 12 is operated to move the slide core 13 forward. Then, the convex portion 13a at the tip of the slide core 13 is engaged with the concave portion 4b of the first lower mold 4. At this time, the skin material P 1 is provided with the upper surface 13c of the convex portion 13a and the lower surface 4d of the concave portion 4b provided so as to extend from the molding surface of the cavity 11.
It will be in a state of being strongly pinched between and.
次に、第３図に示すように、さらに型締めを行うことに
より、第２下型３を押上げる。すると、ポット部６内の
溶融樹脂Ｒは押圧されて、徐々に柔軟性のある表皮材Ｐ
1 の内周面に沿って表皮材Ｐ1 の端部まで広がる。そし
て、第２下型３を第１下型４に当接するまで押上げる
と、第２下型３の突状部３ａの上端面と第１下型４の上
端面とが同一面となり、溶融樹脂Ｒは前記表皮材Ｐ1 の
内周面全体にほぼ一定の厚さに形成され、成形品Ｐ2 の
基材１７となる。Next, as shown in FIG. 3, the second lower mold 3 is pushed up by further performing mold clamping. Then, the molten resin R in the pot portion 6 is pressed, and the skin material P having gradually flexibility is pressed.
It spreads along the inner peripheral surface of 1 to the end of the skin material P 1 . Then, when the second lower die 3 is pushed up until it comes into contact with the first lower die 4, the upper end surface of the protruding portion 3a of the second lower die 3 and the upper end surface of the first lower die 4 become flush with each other and melted. The resin R is formed on the entire inner peripheral surface of the skin material P 1 to have a substantially constant thickness, and becomes the base material 17 of the molded product P 2 .
次に、上型１０をわずかに上昇させると、型締め状態で
第１下型４はスプリング５の作用でわずかに上昇し、型
締め力は減少する。この状態で油圧シリンダ１２の働き
によりスライドコア１３を後退させ、スライドコア１３
の凸部１３ａを第１下型４の凹部４ｂから離間させる。
次いで、上型１０を上昇させて第１下型４から離間して
型開きを行う。そして、第４図に示すように、押上板７
を上昇させることによって押上ピン８を押上げ、成形品
Ｐ2 を第１下型４から離型する。このようにして外皮１
６と表皮１５とからなる表皮材Ｐ1 と溶融樹脂Ｒから得
られる基材１７とが直接接合された密着性の良い成形品
Ｐ2 が得られる。この成形品Ｐ2 は上壁と同上壁から屈
曲して延びる側壁を有し、表面に表皮を備えている。Next, when the upper mold 10 is slightly raised, the first lower mold 4 is slightly raised by the action of the spring 5 in the mold clamping state, and the mold clamping force is reduced. In this state, the slide cylinder 13 is retracted by the action of the hydraulic cylinder 12,
The convex portion 13a is separated from the concave portion 4b of the first lower mold 4.
Next, the upper mold 10 is lifted and separated from the first lower mold 4 to open the mold. Then, as shown in FIG.
Is lifted to push up the push-up pin 8 to release the molded product P 2 from the first lower mold 4. In this way the outer skin 1
A molded product P 2 with good adhesion is obtained in which the skin material P 1 composed of 6 and the skin 15 and the base material 17 obtained from the molten resin R are directly joined. The molded product P 2 has an upper wall, a side wall that is bent and extends from the upper wall, and has a surface skin.
得られた成形品Ｐ2 の表皮１５は、前記のように発泡ポ
リプロピレンで成形され、その発泡層が潰れにくいた
め、良好な軟質感が発揮される。その理由は、前記ポッ
ト部６を備えたスタンピング成形では、溶融樹脂Ｒの圧
力が３０〜７０kg／cm2であり、射出成形の場合の内圧
３００〜５００kg／cm2に比べてかなり低いためであ
る。The skin 15 of the obtained molded product P 2 is molded of expanded polypropylene as described above, and the expanded layer is less likely to be crushed, so that a good soft texture is exhibited. The reason is that in the stamping molding including the pot portion 6, the pressure of the molten resin R is 30 to 70 kg / cm 2, which is considerably lower than the internal pressure of 300 to 500 kg / cm 2 in the case of injection molding. .
このようにして得られた成形品Ｐ2 の端部は、第５図に
示すように、外皮１６と表皮１５とからなる表皮材Ｐ1
が、スライドコア１３の凸部１３ａの上面と第１下型４
の凹部４ｂの下面によってバリの延びる方向が規制さ
れ、その先端部は基材１７の内周面（ＰＬ面）よりも内
側方向に延びている。従って、この成形品Ｐ2 の端部の
表皮材Ｐ1 を第６図に示すように、内側（基材１７の内
周面）に容易に巻き込むことができ、第７図に示すよう
な端部の外観が良好なコンソールボックスの蓋としての
製品Ｐ3 が成形される。この場合、スタンピング成形に
よって基材１７の端部にわずかにバリ１８が発生して
も、そのバリ１８は基材１７の内周面の延長方向ではな
く、それと略直交する方向であるため、表皮材Ｐ1 を巻
き込んだ後の製品Ｐ3 において、外観を損なうことがな
い。また、バリ１８を除去する場合にも、バリ１８の方
向が基材１７の内周面に直交する方向に延びているの
で、処理がしやすい。As shown in FIG. 5, the end portion of the molded product P 2 thus obtained has a skin material P 1 composed of an outer skin 16 and a skin 15.
The upper surface of the convex portion 13a of the slide core 13 and the first lower mold 4
The extending direction of the burr is regulated by the lower surface of the concave portion 4b, and the tip end portion extends inward from the inner peripheral surface (PL surface) of the base material 17. Therefore, the skin material P 1 at the end of the molded product P 2 can be easily rolled up inside (the inner peripheral surface of the base material 17) as shown in FIG. 6, and the end as shown in FIG. The product P 3 is molded as a lid for a console box having a good external appearance. In this case, even if a slight burr 18 is generated at the end portion of the base material 17 by stamping molding, the burr 18 is not in the extending direction of the inner peripheral surface of the base material 17 but in a direction substantially orthogonal thereto, so that the skin The appearance of the product P 3 after the material P 1 is wound is not impaired. Further, even when the burr 18 is removed, since the direction of the burr 18 extends in the direction orthogonal to the inner peripheral surface of the base material 17, the treatment is easy.
上記のように本実施例のスタンピング成形用金型を使用
した表皮付き樹脂成形品の製造方法によれば、成形品Ｐ
2 の端部に相当する位置に配設したスライドコア１３の
先端部に凸部１３ａを設けるとともに、同凸部１３ａに
対応する位置の第１下型４に凹部４ｂを設けたので、得
られる成形品Ｐ2 の端部の表皮材Ｐ1 が基材１７の内周
面と直交する内側方向に延びているため、同表皮材Ｐ1
の端部を巻き込んだときバリ１８が製品Ｐ3 の外観を損
なうおそれがない上に、バリ１８が発生してもバリ１８
の処理が容易となる。As described above, according to the method for manufacturing the resin-molded product with the skin using the stamping molding die of this embodiment, the molded product P
The projection 13a is provided at the tip of the slide core 13 arranged at the position corresponding to the end of 2 , and the depression 4b is provided in the first lower mold 4 at the position corresponding to the projection 13a. Since the skin material P 1 at the end of the molded product P 2 extends in the inward direction orthogonal to the inner peripheral surface of the base material 17, the skin material P 1
The burr 18 does not impair the external appearance of the product P 3 when the end of the burr 18 is caught, and even if the burr 18 occurs, the burr 18
Will be easier to process.
［第２実施例］ 本実施例においては、下型４、上型１０及びスライドコ
ア１３の位置関係、即ち成形品Ｐ2 の側壁端面の形状を
変え、スライドコア１３を下型４に付属させた以外は前
記第１実施例と同様の構成とした。Second Embodiment In the present embodiment, the positional relationship between the lower mold 4, the upper mold 10 and the slide core 13, that is, the shape of the side wall end face of the molded product P 2 is changed, and the slide core 13 is attached to the lower mold 4. Except for the above, the structure is the same as that of the first embodiment.
第８図に示すように、キャビティ１１内に表皮１５と外
皮１６とからなる表皮材Ｐ1 を配置して下型４、上型１
０及びスライドコア１３を型閉めしたとき、スライドコ
ア１３の斜状部１３ｂが成形品Ｐ2 の側壁端面を形成
し、スライドコア１３の凸部１３ａと下型４の凹部４ｂ
が同側壁の延長部（第８図の逆Ｌ字状部）を形成するよ
うになっている。そして、表皮材Ｐ1 はキャビティ１１
の成形面から延長されるように設けられた凸部１３ａの
上面１３ｃと凹部４ｂの下面４ｄとの間で強く圧縮挟持
されるようになっている。As shown in FIG. 8, a skin material P 1 including a skin 15 and an outer skin 16 is arranged in a cavity 11 to form a lower mold 4 and an upper mold 1.
0 and the slide core 13 are closed, the slanted portion 13b of the slide core 13 forms the side wall end surface of the molded product P 2 , and the convex portion 13a of the slide core 13 and the concave portion 4b of the lower mold 4 are formed.
Forms an extension of the side wall (inverted L-shaped portion in FIG. 8). The skin material P 1 is the cavity 11
The upper surface 13c of the convex portion 13a and the lower surface 4d of the concave portion 4b, which are provided so as to extend from the molding surface, are strongly compressed and sandwiched.
このように構成したことによって、表皮材Ｐ1 と下型４
との間のキャビティ１１内に溶融樹脂Ｒを導入したと
き、同溶融樹脂Ｒよって形成される基材１７の側壁端部
に前記第１実施例よりも一層バリが発生しないか、又は
発生してもそのバリの方向が基材１７の裏面側に向いて
いるので、表皮材Ｐ1 を基材１７の裏面側へ巻き込む際
に巻き込みが容易であるとともに、外観も良好である。With this configuration, the skin material P 1 and the lower mold 4 are
When the molten resin R is introduced into the cavity 11 between and, the burrs are generated more or less at the side wall end portion of the base material 17 formed by the molten resin R than in the first embodiment. Also, since the direction of the burr is directed to the back surface side of the base material 17, when the skin material P 1 is wound onto the back surface side of the base material 17, the winding is easy and the appearance is also good.
本発明は上記実施例に限定されるものではなく、発明の
趣旨を逸脱しない範囲で任意に変更することができ、例
えば以下のように構成することもできる。The present invention is not limited to the above-described embodiments, and can be arbitrarily modified without departing from the spirit of the invention, and can be configured as follows, for example.
（１）前記実施例においては、ポット部６内の溶融樹脂
Ｒを押圧して成形品Ｐ2 を成形するために、第２下型３
を押上げてその突状部３ａの上端面と第１下型４の上端
面とを同一面とし、溶融樹脂Ｒを表皮材Ｐ1 の内周面全
体にほぼ一定の厚さに形成したが、第２下型３の突状部
３ａの上端面と第１下型４の上端面とは同一面でなくて
もよく、また溶融樹脂Ｒを表皮材Ｐ1 の内周面全体に一
定の厚さにしなくてもよく、目的とする成形品Ｐ2 の形
状に応じて適宜設定することができる。(1) In the above embodiment, the second lower mold 3 is used to press the molten resin R in the pot portion 6 to mold the molded product P 2.
Was pushed up to make the upper end surface of the protrusion 3a and the upper end surface of the first lower mold 4 flush with each other, and the molten resin R was formed on the entire inner peripheral surface of the skin material P 1 to have a substantially constant thickness. The upper end surface of the protrusion 3a of the second lower mold 3 and the upper end surface of the first lower mold 4 do not have to be flush with each other, and the molten resin R is fixed on the entire inner peripheral surface of the skin material P 1 . The thickness does not have to be set, and can be appropriately set according to the shape of the target molded product P 2 .
（２）前記実施例では、上型１０を可動型の機能を有す
るものとし、第１下型４を固定型の機能を有するものと
したが、逆に上型１０を固定型の機能を有するものと
し、第１下型４を可動型の機能を有するものとすること
もできる。(2) In the above-described embodiment, the upper mold 10 has the function of the movable mold and the first lower mold 4 has the function of the fixed mold. On the contrary, the upper mold 10 has the function of the fixed mold. However, the first lower mold 4 may have a movable function.
（３）前記実施例では、第１下型４と第２下型３とから
ポット部６を形成し、同ポット部６内に溶融樹脂Ｒを注
入したが、このポット部６を設けることなく、例えば第
１下型４にキャビティ１１に連通するゲートを設けて射
出成形やトランスファー成形を行うこともできる。(3) In the above embodiment, the pot portion 6 was formed from the first lower die 4 and the second lower die 3 and the molten resin R was injected into the pot portion 6, but without providing the pot portion 6. For example, a gate communicating with the cavity 11 may be provided in the first lower mold 4 to perform injection molding or transfer molding.
（４）前記実施例では製品Ｐ3 としてコンソールボック
スの蓋を成形したが、成形品Ｐ2 の端部を巻き込みする
ようなものを製造することができ、インストルメントパ
ネル、ピラー等の製品の製造にも適用される。(4) In the above-mentioned embodiment, the lid of the console box was molded as the product P 3 , but it is possible to manufacture a product in which the end portion of the molded product P 2 is rolled up, and a product such as an instrument panel or a pillar is manufactured. Also applies to
［発明の効果］ 本発明の表皮付き樹脂成形品の製造方法によれば、得ら
れる製品の外観に優れ、たとえ成形品の端部にバリが発
生してもその仕上げが容易な成形品が得られるという効
果を奏する。[Effects of the Invention] According to the method for producing a resin molded article with a skin of the present invention, a molded article which is excellent in appearance and can be easily finished even if burrs are generated at the end of the molded article is obtained. The effect of being able to be played.
第１〜７図は本発明の第１実施例を示す図であって、第
１図は型締め状態のスタンピング成形用金型を示す断面
図、第２図は型開き状態のスタンピング成形用金型を示
す断面図、第３図はスライドコアを前進させた状態のス
タンピング成形用金型を示す断面図、第４図は型開き状
態で成形品を押上げる状態のスタンピング成形用金型を
示す断面図、第５図は成形品の端部を形成するための構
造を示す断面図、第６図は成形物を巻き込んだ状態の製
品端部を示す断面図、第７図は製品を示す断面図、第８
図は第２実施例を示し、成形品の端部を形成するための
構造を示す断面図、第９〜１３図は従来例を示す図であ
って、第９図は型開き状態のスタンピング成形用金型を
示す断面図、第１０図は型締め状態のスタンピング成形
用金型を示す断面図、第１１図は成形品を押上げる状態
のスタンピング成形用金型を示す断面図、第１２図は成
形品の端部を示す断面図、第１３図は成形品を裏蓋に組
付けた状態を示す断面図である。 ３……下型としての第２下型、４……下型としての第１
下型、４ｂ……凹部、１０……上型、１１……キャビテ
ィ、１３……スライドコア、１３ａ……凸部、Ｐ1 ……
表皮材、Ｐ2 ……成形品、Ｒ……硬質の熱可塑性樹脂か
らなる溶融樹脂1 to 7 are views showing a first embodiment of the present invention, FIG. 1 is a sectional view showing a stamping molding die in a mold clamped state, and FIG. 2 is a stamping molding die in a mold opened state. Sectional drawing showing the die, FIG. 3 is a sectional view showing the stamping molding die with the slide core advanced, and FIG. 4 shows the stamping molding die with the molded product being pushed up in the mold open state. Sectional drawing, FIG. 5 is a sectional view showing a structure for forming an end of a molded product, FIG. 6 is a sectional view showing an end of a product in which a molded product is rolled up, and FIG. 7 is a sectional view showing a product. Figure, 8th
FIG. 9 shows a second embodiment, a sectional view showing a structure for forming an end portion of a molded product, FIGS. 9 to 13 show conventional examples, and FIG. 9 shows stamping molding in a mold open state. 10 is a sectional view showing a stamping molding die in a clamped state, FIG. 11 is a sectional view showing a stamping molding die in a state of pushing up a molded product, and FIG. Is a cross-sectional view showing the end of the molded product, and FIG. 13 is a cross-sectional view showing the condition where the molded product is assembled to the back cover. 3 ... 2nd lower mold as lower mold, 4 ... 1st lower mold
Lower mold, 4b: concave part, 10: upper mold, 11: cavity, 13: slide core, 13a: convex part, P 1 ...
Skin material, P 2 ...... moldings, the molten resin of thermoplastic resin R ...... hard
Claims (1)
有し、表面に表皮を備える表皮付き樹脂成形品の製造方
法において、成形品裏面のキャビティ形成面を有する下
型（４，３）、成形品表面のキャビティ形成面を有する
上型（１０）及び側壁端面のキャビティ形成面を有する
スライドコア（１３）とからキャビティ（１１）を形成
するとともに、前記スライドコア（１３）の先端部に前
記側壁端面のキャビティ形成面が延長されるような凸部
（１３ａ）を設け、前記下型（４）の側壁キャビティ形
成面の端部に連続して前記凸部（１３ａ）に対応する凹
部（４ｂ）を設け、前記キャビティ（１１）内に予め賦
形された表皮となる柔軟な表皮材（Ｐ１）を配置した
後、上型（１０）と下型（４，３）を型締めし、スライ
ドコア（１３）を前進させ、前記凸部（１３ａ）と凹部
（４ｂ）の間に柔軟な表皮材（Ｐ１）を挟持し、次いで
下型（４，３）と柔軟な表皮材（Ｐ１）との間の前記キ
ャビティ（１１）内に芯材となる硬質の熱可塑性樹脂か
らなる溶融樹脂（Ｒ）を導入することによって同溶融樹
脂（Ｒ）を前記表皮材（Ｐ１）に押圧し、積層した成形
品（Ｐ２）を成形することを特徴とする表皮付き樹脂成
形品の製造方法。1. A method of manufacturing a resin-molded article with a skin, which has an upper wall and a side wall that is bent and extends from the upper wall, and has a skin on the surface thereof. 3), a cavity (11) is formed from an upper die (10) having a cavity forming surface on the surface of the molded product and a slide core (13) having a cavity forming surface on the side wall end face, and the tip of the slide core (13) Is provided with a convex portion (13a) such that the cavity forming surface of the side wall end surface is extended, and corresponds to the convex portion (13a) continuously with the end portion of the side wall cavity forming surface of the lower mold (4). After forming a concave portion (4b) and arranging a flexible skin material (P 1 ) which is a preformed skin in the cavity (11), an upper mold (10) and a lower mold (4, 3) are formed. Tighten and slide core (13) Susumu is, the convex portion and (13a) to sandwich flexible skin material the (P 1) between the recess (4b), followed between the lower mold (4,3) and flexible skin material (P 1) A molded product in which a molten resin (R) made of a hard thermoplastic resin serving as a core material is introduced into the cavity (11) to press the molten resin (R) against the skin material (P 1 ) to laminate the same. A method for producing a resin molded article with a skin, comprising molding (P 2 ).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21388989A JPH0618727B2 (en) | 1988-11-25 | 1989-08-19 | Manufacturing method of resin molded product with skin |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63-153883 | 1988-11-25 | ||
| JP15388388 | 1988-11-25 | ||
| JP21388989A JPH0618727B2 (en) | 1988-11-25 | 1989-08-19 | Manufacturing method of resin molded product with skin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02223415A JPH02223415A (en) | 1990-09-05 |
| JPH0618727B2 true JPH0618727B2 (en) | 1994-03-16 |
Family
ID=26482379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21388989A Expired - Fee Related JPH0618727B2 (en) | 1988-11-25 | 1989-08-19 | Manufacturing method of resin molded product with skin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0618727B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4030964A1 (en) * | 1990-10-01 | 1992-04-02 | Happich Gmbh Gebr | METHOD FOR PRODUCING A PLASTIC MOLDED PART |
| JP2662933B2 (en) * | 1993-12-30 | 1997-10-15 | 東京シート株式会社 | Skin integral molding method |
| JP3336325B2 (en) * | 1994-11-14 | 2002-10-21 | 豊田合成株式会社 | Resin product having skin layer and method for producing the same |
| JP6148290B2 (en) * | 2015-06-29 | 2017-06-14 | 株式会社日本製鋼所 | Resin molding die and resin molding method for molding thin plate-shaped resin molded body |
-
1989
- 1989-08-19 JP JP21388989A patent/JPH0618727B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02223415A (en) | 1990-09-05 |
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