JPH0753388B2 - Method for producing synthetic resin product having skin - Google Patents
Method for producing synthetic resin product having skinInfo
- Publication number
- JPH0753388B2 JPH0753388B2 JP17649187A JP17649187A JPH0753388B2 JP H0753388 B2 JPH0753388 B2 JP H0753388B2 JP 17649187 A JP17649187 A JP 17649187A JP 17649187 A JP17649187 A JP 17649187A JP H0753388 B2 JPH0753388 B2 JP H0753388B2
- Authority
- JP
- Japan
- Prior art keywords
- skin
- core material
- synthetic resin
- resin product
- peripheral edge
- 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 - Lifetime
Links
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
-
- 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
- B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
- B29C45/0055—Shaping
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） 本発明は、芯材の表面に表皮体を有する合成樹脂製品の
製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a method for producing a synthetic resin product having a skin on the surface of a core material.
（従来の技術） 表皮体を表面に有する合成樹脂製品は、成形型のキャビ
ティ内にそのキャビティよりも大きい表皮体を予めセッ
トし、その成形型に熱可塑性樹脂を射出することによ
り、合成樹脂製の芯材の表面に表皮体が一体的に製造さ
れる。(Prior Art) Synthetic resin products having a skin on the surface are made of synthetic resin by setting a skin that is larger than the cavity in a mold cavity and injecting a thermoplastic resin into the mold. The skin is integrally manufactured on the surface of the core material.
しかし、例えば特開昭60−220719号公報に示されている
ように、芯材を射出成形した後、成形型から取出した芯
材の縁部からは表皮体の端末部が突出しているため、こ
の表皮体の端末処理が後工程として必要であった。However, as shown in, for example, Japanese Patent Laid-Open No. 60-220719, after the core material is injection-molded, since the end portion of the epidermis protrudes from the edge portion of the core material taken out from the molding die, The terminal treatment of this epidermis was required as a post process.
この表皮体の端末処理にあたっては、第11図のように、
表皮体１の端末部２を芯材３の裏面に巻き込み、その端
末部２をホッチキスで多数の針４を打込むことによって
止めたり、あるいは、接着剤によって接着固定してい
る。In the terminal treatment of this epidermis, as shown in Fig. 11,
The end portion 2 of the epidermis 1 is wound around the back surface of the core material 3, and the end portion 2 is stopped by hitting a large number of needles 4 with a stapler, or is adhered and fixed by an adhesive.
（発明が解決しようとする問題点） 上記のような従来の製造方法では、成形後、表皮体の端
末部を芯材の裏面に巻込むとともに、ホッチキス、接着
剤等を用いて固定するため、端末処理が面倒であり、時
間がかかるとともに多数の人員を必要としている。(Problems to be Solved by the Invention) In the conventional manufacturing method as described above, after molding, the end portion of the skin body is wound around the back surface of the core material, and is fixed using a stapler, an adhesive, or the like. The terminal processing is cumbersome, time consuming and requires a large number of personnel.
本発明は、上述のような点に鑑みなされたもので、表皮
体の端末処理が容易な表皮体を有する合成樹脂製品の製
造方法を提供することを目的とするものである。The present invention has been made in view of the above points, and it is an object of the present invention to provide a method for producing a synthetic resin product having an epidermis that facilitates terminal treatment of the epidermis.
（発明の構成） （問題点を解決するための手段） 本発明の製造方法は、製品単位に切断した表皮体21の周
縁部22に収縮可能部材24を設け、この表皮体21の周縁部
22を拡開状態で成形型11にセットして芯材31の射出成形
を行なうとともに、成形後に成形型11から取出し、上記
表皮体21の周縁部22を上記収縮可能部材24によって収縮
させることにより上記芯材31の裏面に巻き込ませるもの
である。(Structure of the Invention) (Means for Solving Problems) In the manufacturing method of the present invention, a contractible member 24 is provided on a peripheral edge portion 22 of an epidermis 21 cut into product units, and the peripheral edge portion of the epidermis body 21 is provided.
By setting 22 in the expanded state to the molding die 11 and performing injection molding of the core material 31, taking out from the molding die 11 after molding, and contracting the peripheral edge portion 22 of the skin body 21 by the contractible member 24. The core material 31 is wound around the back surface of the core material 31.
（作用） 本発明は、表皮体21の周縁部22の収縮可能部材24によっ
て、芯材31を射出成形して成形型11から取出した後に、
表皮体21の周縁部22を収縮させて芯材31の裏面に巻き込
ませる。(Operation) According to the present invention, after the core material 31 is injection-molded by the shrinkable member 24 of the peripheral edge portion 22 of the skin body 21 and taken out from the molding die 11,
The peripheral edge portion 22 of the skin body 21 is contracted so that it is wound around the back surface of the core material 31.
（実施例） 以下、本発明の一実施例の構成を第１図ないし第６図を
参照して説明する。(Embodiment) Hereinafter, a configuration of an embodiment of the present invention will be described with reference to FIGS. 1 to 6.
第１図ないし第４図において、11は成形型で、スプルー
12を有した固定型13と、この固定型13に対して接離する
可動型14とを有し、この固定型13と可動型14との型面間
にキャビティ15が形成されている。可動型14の型面の隅
部から型合わせ用のガイドロッド16が突設されていると
ともに、固定型13の型面にそのガイドロッド16が嵌入す
る図示しないガイド孔が形成され、さらに、可動型14の
キャビティ15の隅部に対応する外側部に表皮体取付ピン
17が突設されているとともに、固定型13にその表皮体取
付ピン17が嵌合するピン受孔18が形成されている。In FIGS. 1 to 4, 11 is a molding die, which is a sprue.
A fixed die 13 having 12 and a movable die 14 that comes in contact with and separates from the fixed die 13 are provided, and a cavity 15 is formed between the die surfaces of the fixed die 13 and the movable die 14. A guide rod 16 for mold matching is provided so as to project from a corner of the mold surface of the movable mold 14, and a guide hole (not shown) into which the guide rod 16 is fitted is formed in the mold surface of the fixed mold 13. The outer skin mounting pin is located on the outer side of the mold 14 corresponding to the corner of the cavity 15.
The protrusion 17 is provided, and the fixed mold 13 is formed with a pin receiving hole 18 into which the skin attachment pin 17 is fitted.
また、21は表皮体で、起毛を有した布地、ポリ塩化ビニ
ールレザー、フィルム等からなり、製品単位の大きさに
切断され、周縁部22を裏面側に折返し、その先端部を縫
合して通し溝23を形成し、この通し溝23内に例えば自己
収縮性を有するゴム等の収縮可能部材24を通して環状に
連結しておく。Reference numeral 21 denotes an epidermis, which is made of napped fabric, polyvinyl chloride leather, film, etc., cut into product-size pieces, the peripheral edge portion 22 is folded back to the back side, and the leading end portion is sewn and threaded. A groove 23 is formed, and a contractable member 24 such as rubber having a self-contracting property is passed through the through groove 23 and is annularly connected.
また、第１図のように、固定型13のスプルー12に臨んで
ノズル25が配設され、このノズル25はスプルー12に対し
て接離可能とされ、熱可塑性溶融樹脂26を射出する。Further, as shown in FIG. 1, a nozzle 25 is arranged facing the sprue 12 of the fixed mold 13, and the nozzle 25 can be brought into contact with and separated from the sprue 12, and injects the thermoplastic molten resin 26.
そうして、第１図および第２図のように、型開状態にあ
る成形型11の可動型14に表皮体21を装着する。すなわ
ち、表皮体21の周縁部22を収縮可能部材24に抗して拡開
させ、可動型14の型面から突出する各表皮体取付ピン17
に引掛ける。Then, as shown in FIGS. 1 and 2, the skin 21 is attached to the movable mold 14 of the mold 11 in the mold open state. That is, the peripheral edge portion 22 of the epidermis 21 is expanded against the contractible member 24, and the epidermis attachment pins 17 protruding from the die surface of the movable die 14 are provided.
Engage.
そして、第３図のように、可動型14を固定型13に型締め
する。このとき、キャビティ15から突出する表皮体21の
縁部が固定型13と可動型14との間に狭持されるととも
に、表皮体取付ピン17が表皮体21の縁部と一緒にピン受
孔18に進入する。続いて、ノズル25を固定型13のスプル
ー12に接合し、熱可塑性溶融樹脂26をスプルー12を通じ
てキャビティ15内に射出して充填する。なお、ノズル25
は、充填完了後、スプルー12から離反させる。Then, as shown in FIG. 3, the movable die 14 is clamped to the fixed die 13. At this time, the edge portion of the skin body 21 protruding from the cavity 15 is sandwiched between the fixed mold 13 and the movable mold 14, and the skin body mounting pin 17 is pin-receiving hole together with the edge portion of the skin body 21. Enter 18. Subsequently, the nozzle 25 is joined to the sprue 12 of the fixed mold 13, and the thermoplastic molten resin 26 is injected and filled into the cavity 15 through the sprue 12. The nozzle 25
Is separated from the sprue 12 after the filling is completed.
成形型11のキャビティ15内に充填された溶融樹脂26は、
温度が徐々に低下して硬化を始め、芯材31が成形され
る。The molten resin 26 filled in the cavity 15 of the molding die 11 is
The temperature gradually decreases and begins to harden, and the core material 31 is molded.
成形後、第４図のように、固定型13から可動型14を型開
し、芯材31等を取出す。この取出し時において、表皮体
21の周縁部22を可動型14の各表皮体取付ピン17から外す
ことにより、収縮可能部材24の収縮力によって、表皮体
21の周縁部22が芯材31の裏面に巻き込まれる。After molding, as shown in FIG. 4, the movable mold 14 is opened from the fixed mold 13 and the core material 31 and the like are taken out. When this is taken out, the epidermis
By removing the peripheral edge portion 22 of 21 from each skin attachment pin 17 of the movable die 14, the contraction force of the contractible member 24 causes the skin to move.
The peripheral edge portion 22 of 21 is wound around the back surface of the core material 31.
そして、芯材31のスプルー部分を切除することにより、
第５図（ａ）（ｂ）および第６図に示すように、表面に
表皮体21を有する合成樹脂製品32が製造される。Then, by cutting off the sprue part of the core material 31,
As shown in FIGS. 5 (a), (b) and FIG. 6, a synthetic resin product 32 having a skin 21 on its surface is manufactured.
上述のようにして製造された合成樹脂製品32は、成形型
11から取出すことにより、収縮可能部材24の収縮力によ
って表皮体21の端末部を芯材31の裏面に自動的に巻き込
むので、成形後の表皮体21の端末処理の必要がない。The synthetic resin product 32 manufactured as described above is a molding die.
By taking it out from 11, the end portion of the skin body 21 is automatically wound around the back surface of the core material 31 by the contracting force of the contractible member 24, so that the end treatment of the skin body 21 after molding is not necessary.
また、上記実施例では、表皮体21の通し溝23内に入れる
収縮可能部材24として自己収縮性を有したゴム等を用い
たが、紐を用いてもよく、すなわち、成形後、その紐を
引張って結ぶことにより、表皮体21の周縁部22を縮めて
芯材31の裏面に巻き込むことができる。Further, in the above embodiment, rubber or the like having self-contractibility is used as the contractible member 24 to be inserted into the through groove 23 of the skin 21, but a string may be used, that is, after the molding, the string is By pulling and tying, the peripheral edge portion 22 of the skin body 21 can be contracted and wound around the back surface of the core material 31.
また、表皮体21の周縁部22への収縮可能部材24の取付け
にあたっては、第７図のように、表皮体21の周縁部22に
収縮可能部材24を直接縫付けてもよく、この取付構造の
場合には、収縮可能部材24がゴム等の自己収縮性を有し
たものに限られる。When attaching the shrinkable member 24 to the peripheral edge portion 22 of the skin 21, the shrinkable member 24 may be directly sewn to the peripheral edge portion 22 of the skin 21, as shown in FIG. In this case, the contractible member 24 is limited to one having a self-contracting property such as rubber.
また、第８図のように、収縮可能部材24としては熱を加
えると収縮する熱収縮性材料を用いてもよく、すなわ
ち、表皮体21の周縁部22の裏面に熱収縮性材料からなる
収縮可能部材24を塗布形成し、そして、この表皮体21を
成形型11にセットして芯材31を成形した後、第９図のよ
うに、電熱ヒータ35からなる加熱手段を用いて熱を加え
ることにより、第10図のように、収縮可能部材24が収縮
し、表皮体21の周縁部22を芯材31の裏面に巻き込むこと
ができる。Further, as shown in FIG. 8, a heat-shrinkable material that shrinks when heat is applied may be used as the shrinkable member 24, that is, the back surface of the peripheral edge portion 22 of the skin body 21 is made of a heat-shrinkable material. After forming the feasible member 24 by coating, setting this skin 21 in the molding die 11 to mold the core material 31, heat is applied by using a heating means composed of an electric heater 35 as shown in FIG. As a result, as shown in FIG. 10, the contractible member 24 contracts, and the peripheral edge portion 22 of the skin body 21 can be wound around the back surface of the core material 31.
本発明によれば、表皮体の周縁部に設けた収縮可能部材
によって、芯材を射出成形して成形型から取出した後
に、表皮体の周縁部を収縮させて芯材の裏面に巻き込ま
せることができ、表皮体の端末処理が容易であり、その
端末処理にかかる時間および人員の削減を図れる。According to the present invention, after the core material is injection-molded by the shrinkable member provided on the peripheral edge portion of the skin body and taken out from the molding die, the peripheral edge portion of the skin body is contracted to be wound around the back surface of the core material. The terminal treatment of the epidermis is easy, and the time and personnel required for the terminal treatment can be reduced.
第１図は本発明の製造方法の一実施例を示す成形型の斜
視図、第２図ないし第４図はその製造工程を示す成形型
の断面図、第５図（ａ）（ｂ）は合成樹脂製品の斜視
図、第６図はその断面図、第７図は本発明の他の実施例
を示す表皮体の一部の断面図、第８図は本発明のさらに
他の実施例を示す表皮体の断面図、第９図はその成形後
の端末処理の説明図、第10図はその合成樹脂製品の断面
図、第11図は従来の製造方法の一例を示す合成樹脂製品
の斜視図である。 11……成形型、21……表皮体、22……周縁部、24……収
縮可能部材、31……芯材、35……加熱手段としての電熱
ヒータ。FIG. 1 is a perspective view of a molding die showing an embodiment of the manufacturing method of the present invention, FIGS. 2 to 4 are sectional views of the molding die showing the manufacturing process, and FIGS. 5 (a) and 5 (b) are FIG. 6 is a perspective view of a synthetic resin product, FIG. 6 is a sectional view thereof, FIG. 7 is a partial sectional view of an epidermis showing another embodiment of the present invention, and FIG. 8 is a further embodiment of the present invention. Fig. 9 is a sectional view of the skin shown in Fig. 9, Fig. 9 is an explanatory view of the end treatment after molding, Fig. 10 is a sectional view of the synthetic resin product, and Fig. 11 is a perspective view of the synthetic resin product showing an example of a conventional manufacturing method. It is a figure. 11 ... Mold, 21 ... Skin, 22 ... Peripheral part, 24 ... Shrinkable member, 31 ... Core material, 35 ... Electric heater as heating means.
Claims (2)
可能部材を設け、この表皮体の周縁部を拡開状態で成形
型にセットして芯材の射出成形を行なうとともに、成形
後に成形型から取出し、上記表皮体の周縁部を上記収縮
可能部材によって収縮させて上記芯材の裏面に巻き込ま
せることを特徴とする表皮体を有する合成樹脂製品の製
造方法。1. A contractible member is provided on a peripheral edge of a skin cut into product units, and the peripheral edge of the skin is set in a mold in an expanded state to perform injection molding of a core material, and after molding. A method for producing a synthetic resin product having a skin body, comprising taking out from a molding die, shrinking the peripheral portion of the skin body by the shrinkable member, and winding the shrinkage member around the back surface of the core material.
材を射出成形して成形型から取出した後、加熱手段を用
いて収縮可能部材を収縮させることにより、表皮体の周
縁部を芯材の裏面に巻き込ませることを特徴とする特許
請求の範囲第１項記載の表皮体を有する合成樹脂製品の
製造方法。2. The shrinkable member is made of a heat-shrinkable material, and after the core material is injection-molded and taken out from the molding die, the shrinkable member is shrunk by using a heating means so that the peripheral portion of the skin body is removed. The method for producing a synthetic resin product having a skin according to claim 1, wherein the synthetic resin product is wound around the back surface of the core material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17649187A JPH0753388B2 (en) | 1987-07-15 | 1987-07-15 | Method for producing synthetic resin product having skin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17649187A JPH0753388B2 (en) | 1987-07-15 | 1987-07-15 | Method for producing synthetic resin product having skin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6418616A JPS6418616A (en) | 1989-01-23 |
| JPH0753388B2 true JPH0753388B2 (en) | 1995-06-07 |
Family
ID=16014597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17649187A Expired - Lifetime JPH0753388B2 (en) | 1987-07-15 | 1987-07-15 | Method for producing synthetic resin product having skin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0753388B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009030736A (en) * | 2007-07-27 | 2009-02-12 | Nitto Seiko Co Ltd | High-hardness aluminum alloy screw component |
| WO2019064359A1 (en) * | 2017-09-27 | 2019-04-04 | 河西工業株式会社 | Automobile door trim |
| JP7144253B2 (en) * | 2018-09-13 | 2022-09-29 | 株式会社Subaru | Method for producing fiber-reinforced composite material |
-
1987
- 1987-07-15 JP JP17649187A patent/JPH0753388B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6418616A (en) | 1989-01-23 |
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