JP2002370272A - Method for manufacturing extrusion molding for automobile - Google Patents

Method for manufacturing extrusion molding for automobile

Info

Publication number
JP2002370272A
JP2002370272A JP2001220679A JP2001220679A JP2002370272A JP 2002370272 A JP2002370272 A JP 2002370272A JP 2001220679 A JP2001220679 A JP 2001220679A JP 2001220679 A JP2001220679 A JP 2001220679A JP 2002370272 A JP2002370272 A JP 2002370272A
Authority
JP
Japan
Prior art keywords
synthetic resin
core material
resin core
coating layer
extrusion molding
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.)
Pending
Application number
JP2001220679A
Other languages
Japanese (ja)
Inventor
Naohisa Miyagawa
直久 宮川
Katsuhisa Kato
勝久 加藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokiwa Chemical Industries Co Ltd
System Technical Co Ltd
Original Assignee
Tokiwa Chemical Industries Co Ltd
System Technical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tokiwa Chemical Industries Co Ltd, System Technical Co Ltd filed Critical Tokiwa Chemical Industries Co Ltd
Priority to JP2001220679A priority Critical patent/JP2002370272A/en
Publication of JP2002370272A publication Critical patent/JP2002370272A/en
Pending legal-status Critical Current

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  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing an extrusion molding for an automobile such as a trim, a weatherstrip or the like in which a core material made of a synthetic resin of a fish-bone type is embedded. SOLUTION: The method for manufacturing the extrusion molding for the automobile comprises the steps of extrusion molding the core material made of the synthetic resin of a sectional substantially U shape in a first mold die from a hard synthetic resin of a first extrusion molding machine, and then working various type cut parts by a punching machine in the synthetic resin core material of the fish-bone type formed at a predetermined interval. The method further comprises the steps of invading the synthetic resin core material of the fish-bone type into a second mold die, and then molding a coating layer on an outer periphery of the synthetic resin core material of the fish-bone type in the second mold die by a foaming material of a soft synthetic resin, rubber, them or the like for forming the coating layer from a second extrusion molding machine.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、フィッシュボーンタイ
プの合成樹脂芯材を内部に埋設したトリム、ウェザース
トリップ等に用いる自動車用の押出し成形品の製造方法
に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an extruded product for an automobile used for a trim, a weather strip or the like in which a fishbone type synthetic resin core is embedded.

【0002】[0002]

【従来の技術】一般にこの種のフィッシュボーンタイプ
の芯材を埋設した自動車用の押出し成形品においては、
鉄等の金属製の芯材が使用され、その製造方法として
は、該金属製の芯材は、断面が平板の状態で、切除部を
打ち抜きしたものがフィッシュボーンタイプの平板芯材
に加工され、その該フィッシュボーンタイプの平板芯材
の表裏外周を押出し成形によって合成樹脂またはゴム等
の材料で被覆層を形成しているものである。その後、断
面が略U字状に折り曲げ加工されて製品化されるもので
ある。しかし、近年の環境問題の高まりから、芯材を軽
量化やリサイクルするために硬質合成樹脂に取り替える
ことが検討されているが、硬質合成樹脂の芯材を金属製
の平板芯材と同様の製造方法では、断面が平板の状態
で、切除部を切除してフィッシュボーンタイプの平板芯
材に加工され、該フィッシュボーンタイプの平板芯材の
外周に押出し成形によって合成樹脂またはゴム等の被覆
層を形成し、その後、断面が略U字状形状に折り曲げよ
うとしたが、材質が硬質合成樹脂のために平板芯材を断
面略U字形状に折り曲げ加工することが非常に難しく、
また、仮に断面略U字形状に折り曲げても、自動車の車
体温度が熱帯地域では、80℃〜100℃の高温になる
ことがあり、その場合は、元の平板状の断面に戻ると云
う問題点があった。
2. Description of the Related Art Generally, in an extruded product for an automobile in which a fishbone type core material of this kind is embedded,
A core made of metal such as iron is used. As a method of manufacturing the core, the metal core is cut into a flat plate with a cross section cut into a fishbone type plate core. The coating layer is formed of a material such as synthetic resin or rubber by extrusion molding on the front and back outer circumferences of the fishbone type flat plate core material. Thereafter, the section is bent into a substantially U-shape to produce a product. However, due to the increasing environmental problems in recent years, it has been studied to replace the core material with a hard synthetic resin in order to reduce the weight and recycle it. In the method, in a state where the cross section is a flat plate, a cut portion is cut and processed into a fishbone type flat plate core material, and a coating layer such as a synthetic resin or rubber is formed by extrusion molding on the outer periphery of the fishbone type flat plate core material. After that, the cross section tried to be bent into a substantially U-shaped shape, but it is very difficult to bend the flat plate core material into a substantially U-shaped cross section because the material is hard synthetic resin,
Further, even if the vehicle body is bent in a substantially U-shaped cross section, the temperature of the vehicle body may be as high as 80 ° C. to 100 ° C. in a tropical region, in which case the problem returns to the original flat cross section. There was a point.

【0003】[0003]

【発明が解決しようとする課題】本発明は、上記の問題
点を解決するためのもので、あらかじめ硬質合成樹脂で
形成された断面が略U字形状に形成された合成樹脂芯材
をフィッシュボーンタイプの合成樹脂芯材に加工し、こ
れを該フィッシュボーンタイプの合成樹脂芯材に使用
し、この合成樹脂芯材の外周表面に軟質の合成樹脂の被
覆層を形成する製造方法を提供することを目的とする。
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a synthetic resin core material previously formed of a hard synthetic resin and having a substantially U-shaped cross section is provided with a fishbone. To provide a manufacturing method of processing into a synthetic resin core material of a type, using the same as the fishbone type synthetic resin core material, and forming a soft synthetic resin coating layer on the outer peripheral surface of the synthetic resin core material. With the goal.

【0004】[0004]

【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、予め硬質合成樹脂で形成される断面略U
字形状の合成樹脂の芯材をフィッシュボーンタイプの合
成樹脂芯材に加工する。このフィッシュボーンタイプの
合成樹脂芯材を走行させて金型ダイスの内部に侵入させ
て押出し成形機からの被覆層を形成する軟質合成樹脂、
ゴムまたはその発泡体等の材料によって金型ダイスの内
部で該フィッシュボーンタイプの合成樹脂芯材の外表面
に該被覆層を形成する製造方法である。また、前記製造
方法を連続的に行うために、第1押出し成形機に注入さ
れた硬質合成樹脂は、第1金型ダイスの内部で略U字形
状の合成樹脂芯材に押出し成形された後、打ち抜き機に
よって切除部を切除されたフィッシュボーンタイプの合
成樹脂芯材に加工され、該フィッシュボーンタイプの合
成樹脂芯材は、第2金型ダイスの内部に侵入させ、第2
押出し成形機から被覆層を形成する軟質合成樹脂、ゴム
またはその発泡体等の材料によって該第2金型ダイスの
内部で該フィッシュボーンタイプの合成樹脂芯材の外周
に軟質合成樹脂の該被覆層を形成した製造方法である。
SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a cross-section having a substantially U-shaped section formed of a hard synthetic resin in advance.
The character-shaped synthetic resin core is processed into a fishbone type synthetic resin core. A soft synthetic resin which runs this fishbone type synthetic resin core material and penetrates into a mold die to form a coating layer from an extruder,
This is a manufacturing method in which the coating layer is formed on the outer surface of the fishbone type synthetic resin core material inside a mold die using a material such as rubber or a foam thereof. In addition, in order to continuously perform the manufacturing method, the hard synthetic resin injected into the first extruder is extruded into a substantially U-shaped synthetic resin core inside the first die. The synthetic resin core of the fishbone type is cut into a cut portion by a punching machine, and the synthetic resin core of the fishbone type is caused to enter the inside of the second mold die to form the second resin die.
The coating layer of a soft synthetic resin is formed on the outer periphery of the fishbone-type synthetic resin core inside the second mold die by using a material such as a soft synthetic resin, rubber, or a foam thereof that forms a coating layer from an extruder. Is a manufacturing method.

【0005】[0005]

【実施例】本発明の実施例を図面について説明すると、
図1に示すものは、フィッシュボーンタイプのトリム、
ウェザーストリップ等の押出し成形品(1)を示すもの
で、図2のものは、硬質合成樹脂による断面略U字形の
合成樹脂芯材(9)であり、長手方向に形成されてい
る。図3のものは、フィッシュボーンタイプの合成樹脂
芯材(2)で、断面略U字形の合成樹脂芯材(9)に打
ち抜き切除部(5)(5)を形成されている。図4のも
のは、フィッシュボーンタイプの合成樹脂芯材(2)の
他の例を示している。請求項1に述べた実施例のもの
は、該フィッシュボーンタイプの合成樹脂芯材(2)が
金型ダイスの内部に侵入した時に押出し成形機よりの軟
質合成樹脂、ゴムまたはそれ等の発泡体等よりなる材料
を使用して、金型ダイスの内部でフィッシュボーンタイ
プの合成樹脂芯材(2)の外周に被覆層(3)を被着成
形するものである。
BRIEF DESCRIPTION OF THE DRAWINGS FIG.
FIG. 1 shows a fishbone type trim,
FIG. 2 shows an extruded product (1) such as a weather strip. FIG. 2 shows a synthetic resin core material (9) made of a hard synthetic resin and having a substantially U-shaped cross section, which is formed in the longitudinal direction. FIG. 3 shows a fishbone type synthetic resin core (2), which is formed by punching out cutouts (5) and (5) in a synthetic resin core (9) having a substantially U-shaped cross section. FIG. 4 shows another example of a fishbone type synthetic resin core (2). In the case of the embodiment described in claim 1, when the fishbone type synthetic resin core material (2) enters the inside of a mold die, a soft synthetic resin, rubber or a foam thereof from an extruder is used. A coating layer (3) is formed on the outer periphery of a fishbone type synthetic resin core material (2) inside a mold die by using a material made of the above.

【0006】次に、請求項2に述べているフィッシュボ
ーンタイプの合成樹脂芯材(2)は、図6に示す実施例
の製造方法の如く、硬質合成樹脂を注入した第1押出し
成形機(10)より第1金型ダイス(11)の内部を通
過中に形成される断面略U字形の合成樹脂芯材(9)
は、冷却槽(12)を通過した後に、打ち抜き機(1
3)によって多数の打ち抜き切除部(5)(5)が形成
され、その後、第2押出し成形機(14)からの軟質合
成樹脂、ゴムまたはその発泡体等よりなる該被覆層
(3)を第2金型ダイス(14)の内部で該フィッシュ
ボーンタイプの合成樹脂芯材(2)の外周面全体に被着
成形して押出し成形品を製造するものである。更に、被
覆層(3)を形成する材料として合成樹脂またはその発
泡体を使用した場合は、金型ダイスを通過した後は、冷
却槽(12)を経て送られる。また、該被覆層(3)を
形成する材料をゴムまたはその発泡体とした場合は、金
型ダイスを通過後に加硫槽の工程を付加するものであ
る。なお、図5に示すものは、押出し成形品(1)の他
の実施例を示すもので、押出し成形品(1)の端部に中
空体を一体に成形したものを示したものである。
Next, the fishbone type synthetic resin core material (2) according to the second aspect of the present invention is manufactured by a first extruder (FIG. 6) in which a hard synthetic resin is injected. 10) A synthetic resin core material (9) having a substantially U-shaped cross section formed while passing through the inside of the first die (11).
After passing through the cooling tank (12), the punching machine (1
3), a large number of punch cutouts (5) and (5) are formed, and then the coating layer (3) made of a soft synthetic resin, rubber or a foam thereof from the second extruder (14) is formed. An extruded product is manufactured by applying a coating on the entire outer peripheral surface of the fishbone type synthetic resin core material (2) inside a two-die die (14). Further, when a synthetic resin or a foam thereof is used as a material for forming the coating layer (3), it is sent through a cooling tank (12) after passing through a die. When the material forming the coating layer (3) is rubber or its foam, a vulcanizing tank step is added after passing through the die. FIG. 5 shows another embodiment of the extruded product (1), in which a hollow body is integrally formed at the end of the extruded product (1).

【0007】次に、本発明が使用する材料を説明する
と、断面略U字形状を形成する硬質合成樹脂としては、
ポリプロピレン、ポリエチレン等のオレフィン系樹脂、
スチレン系樹脂、ナイロン系樹脂、ポリエステル系樹
脂、硬質塩化ビニール等または、それらの硬質合成樹脂
にタルク、マイカ、ガラス繊維等の無機質の粉体を混合
して、硬質合成樹脂の剛生を更に高め、線膨張係数を小
さくする場合もある。更に、被覆層を形成する軟質の合
成樹脂としては、オレフィン系、スチレン系樹脂又はそ
れらの熱可塑性エラストマー、軟質塩化ビニール樹脂等
の硬度がJISA硬度90以下の軟質合成樹脂またはそ
の発泡体等を使用する。また、被覆層を形成するゴムと
しては、EPDM系のゴム、またはその発泡体等を使用
する。
Next, the materials used in the present invention will be described. Hard synthetic resins forming a substantially U-shaped cross section include:
Olefinic resins such as polypropylene and polyethylene,
Styrene-based resin, nylon-based resin, polyester-based resin, hard vinyl chloride, etc., or a mixture of such hard synthetic resins with inorganic powder such as talc, mica, glass fiber, etc., to further enhance the rigidity of the hard synthetic resin, In some cases, the coefficient of linear expansion is reduced. Further, as the soft synthetic resin for forming the coating layer, use is made of a soft synthetic resin such as an olefin-based resin, a styrene-based resin or a thermoplastic elastomer thereof, or a soft vinyl chloride resin having a JISA hardness of 90 or less, or a foam thereof. I do. Further, as the rubber forming the coating layer, EPDM rubber or a foam thereof is used.

【0008】次に、図6に示す実施例の製造工程を説明
すると、第1押出し成形機(10)に注入された硬質合
成樹脂は、第1金型ダイス(11)の内部で断面略U字
形状の合成樹脂芯材(9)に押出し成形され、その後、
打ち抜き機(13)によって打ち抜き切除部(5)
(5)を切除されたフィッシュボーンタイプの合成樹脂
芯材(2)に加工され、該フィッシュボーンタイプの合
成樹脂芯材(2)は、第2金型ダイス(15)の内部に
侵入し、第2押出し成形機(14)から被覆層(3)を
形成する軟質の合成樹脂、またはその発泡体等の材料に
よって該第2金型ダイス(15)の内部で該フィシュボ
ーンタイプの合成樹脂芯材(2)の外周に該被覆層
(3)を成形した後に冷却槽(16)を通過させて完成
させるものである。
Next, the manufacturing process of the embodiment shown in FIG. 6 will be described. The hard synthetic resin injected into the first extruder (10) has a substantially U-shaped cross section inside the first die (11). Extrusion molded into a U-shaped synthetic resin core material (9),
Punching and cutting part (5) by punching machine (13)
(5) is processed into a fishbone type synthetic resin core material (2) from which the fishbone type synthetic resin core material (2) has penetrated into the second mold die (15); The fishbone type synthetic resin core is formed inside the second mold die (15) by a material such as a soft synthetic resin for forming the coating layer (3) from the second extruder (14) or a foam thereof. After forming the coating layer (3) on the outer periphery of the material (2), the coating layer (3) is passed through a cooling bath (16) to complete the coating.

【0009】[0009]

【発明の効果】本発明は、以上説明したように構成され
ているので、従来の金属製の芯材を埋設したフィッシュ
ボーンタイプの押出し成形品と比較して、軽量化やリサ
イクルに優れている効果がある。また、金属製の平板芯
材に替えて合成樹脂製の平板芯材の外周に合成樹脂を被
覆層したものを断面略U字形に折り曲げたもののように
折り曲げ加工後に平板状に断面が復元することがない効
果がある。そして、本発明の押出し成形品の芯材を硬質
合成樹脂を以て断面略U字形状に形成したものを使用し
たので、充分に金属の如く強靭化されると共に、高温度
に対しても対応できる効果がある。また、硬質合成樹脂
の芯材を工程の走行で自動的に形成し、進行工程中に打
ち抜き機によって数個の打ち抜き切除部を連続して容易
に形成できるため製造価格が安くなる効果がある。
Since the present invention is constructed as described above, it is superior in weight reduction and recycling as compared with a conventional fishbone type extruded product in which a metal core is embedded. effective. In addition, the cross section is restored to a flat plate shape after bending, as in the case where a synthetic resin coating layer is formed on the outer periphery of a synthetic resin flat plate core material instead of a metal flat plate core material and then bent into a substantially U-shaped cross section. There is no effect. And since the core of the extruded product of the present invention is formed in a substantially U-shaped cross section using a hard synthetic resin, it can be sufficiently toughened like a metal and can cope with high temperatures. There is. In addition, since the core material of the hard synthetic resin is automatically formed during the process and several punching cutouts can be easily formed continuously by the punching machine during the progressing process, the manufacturing cost is reduced.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明のフィッシュボーンタイプの合成樹脂芯
材の外周に軟質合成樹脂等を被覆層を形成した押出し成
形品の1部欠除した斜面図である。
FIG. 1 is a perspective view of an extruded product in which a coating layer of a soft synthetic resin or the like is formed on the outer periphery of a fishbone type synthetic resin core material of the present invention, with a part thereof removed.

【図2】本発明の断面略U字形の合成樹脂の芯材の1部
欠除した斜面図である。
FIG. 2 is a perspective view of a synthetic resin core material having a substantially U-shaped cross-section according to the present invention, in which one part is omitted.

【図3】本発明の打ち抜き切除部を設けたフィッシュボ
ーンタイプの合成樹脂芯材の1部欠除した斜面図であ
る。
FIG. 3 is a perspective view of a fishbone type synthetic resin core material provided with a punched-out portion according to the present invention, in which a part of the synthetic resin core material is omitted.

【図4】同じく切除部を設けた他の実施例のフィッシュ
ボーンタイプの合成樹脂芯材の1部欠除した斜面図であ
る。
FIG. 4 is a perspective view of another embodiment of the fishbone type synthetic resin core material, in which a cutout portion is provided, with a portion removed.

【図5】同じく本発明の他の実施例の押出し成形品の縦
断側面図である。
FIG. 5 is a longitudinal sectional side view of an extruded product according to another embodiment of the present invention.

【図6】本発明の押出し成形品の製造工程を示す1部欠
除した側面図である。
FIG. 6 is a side view showing a manufacturing process of an extruded product according to the present invention, with one part removed.

【符号の説明】[Explanation of symbols]

1 押出し成形品 2 フィッシュボーンタイプの合成樹脂芯材 3 被覆層 5 打ち抜き切除部 6 連接部 7 上部切除部 9 断面略U字形の合成樹脂芯材 10 第1押出し成形機 11 第1金型ダイス 12 冷却槽 DESCRIPTION OF REFERENCE NUMERALS 1 Extruded product 2 Fishbone type synthetic resin core material 3 Coating layer 5 Punching cutout portion 6 Connecting portion 7 Upper cutout portion 9 Synthetic resin core material having a substantially U-shaped cross section 10 First extruder 11 First die and die 12 Cooling tank

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 FI テーマコート゛(参考) B29K 701:00 B29K 701:00 B29L 9:00 B29L 9:00 (72)発明者 加藤 勝久 茨城県北相馬郡守谷町久保ケ丘1丁目18番 地12 株式会社システムテクニカル内 Fターム(参考) 4F207 AD05 AG03 AG20 AH20 KA01 KB18 KB26 KW23 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) B29K 701: 00 B29K 701: 00 B29L 9:00 B29L 9:00 (72) Inventor Katsuhisa Kato Kitasoma, Ibaraki 1-18-18 Kubogaoka, Moriya-machi, Gunma F-term in System Technical Co., Ltd. (reference) 4F207 AD05 AG03 AG20 AH20 KA01 KB18 KB26 KW23

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 走行するフィッシュボーンタイプの合成
樹脂芯材は、断面略U字形の合成樹脂芯材が多数の打ち
抜き切除部を形成し、該フィッシュボーンタイプの合成
樹脂芯材が金型ダイスの内部に侵入した時に押出し成形
機よりの軟質合成樹脂、ゴムまたは、それ等の発泡体等
よりなる被覆層を外周に被着成形した事を特徴とする自
動車用の押出し成形品の製造方法。
1. A running fishbone-type synthetic resin core has a substantially U-shaped cross-section and forms a large number of cutouts, and the fishbone-type synthetic resin core is a mold die. A method of manufacturing an extruded product for an automobile, wherein a coating layer made of a soft synthetic resin, rubber, or a foamed material thereof is applied to an outer periphery of the extruded product when it enters the interior.
【請求項2】 フィッシュボーンタイプの合成樹脂芯材
は、硬質合成樹脂を注入した第1押出し成形機より第1
金型ダイス内の通過中に断面略U字形の合成樹脂芯材に
押出し成形された後、打ち抜き機によって所定間隔を設
けて多数の打ち抜き切除部を形成し、その後、第2押出
し成形機に注入した軟質合成樹脂、ゴムまたは、それ等
の発泡体等よりなる被覆層を第2金型ダイスの内部で該
フィッシュボーンタイプの合成樹脂芯材の外周に被着成
形したことを特徴とする自動車用の押出し成形品の製造
方法。
2. A fishbone type synthetic resin core is made of a first extruder into which a hard synthetic resin is injected.
After being extruded into a synthetic resin core material having a substantially U-shaped cross section while passing through the mold die, a number of punched cutouts are formed at predetermined intervals by a punching machine, and then injected into a second extruder. An automotive vehicle characterized in that a coating layer made of a soft synthetic resin, rubber, or a foam thereof, etc., is formed on the outer periphery of the fishbone type synthetic resin core inside the second die. Of manufacturing extrusion molded products.
JP2001220679A 2001-06-15 2001-06-15 Method for manufacturing extrusion molding for automobile Pending JP2002370272A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001220679A JP2002370272A (en) 2001-06-15 2001-06-15 Method for manufacturing extrusion molding for automobile

Publications (1)

Publication Number Publication Date
JP2002370272A true JP2002370272A (en) 2002-12-24

Family

ID=19054466

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001220679A Pending JP2002370272A (en) 2001-06-15 2001-06-15 Method for manufacturing extrusion molding for automobile

Country Status (1)

Country Link
JP (1) JP2002370272A (en)

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