JPH0376256B2 - - Google Patents

Info

Publication number
JPH0376256B2
JPH0376256B2 JP60069592A JP6959285A JPH0376256B2 JP H0376256 B2 JPH0376256 B2 JP H0376256B2 JP 60069592 A JP60069592 A JP 60069592A JP 6959285 A JP6959285 A JP 6959285A JP H0376256 B2 JPH0376256 B2 JP H0376256B2
Authority
JP
Japan
Prior art keywords
core material
base
weather strip
longitudinal direction
molded body
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
Application number
JP60069592A
Other languages
Japanese (ja)
Other versions
JPS61229634A (en
Inventor
Kyoshi Shigeki
Takao Nakajima
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.)
Toyoda Gosei Co Ltd
Original Assignee
Toyoda Gosei 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 Toyoda Gosei Co Ltd filed Critical Toyoda Gosei Co Ltd
Priority to JP60069592A priority Critical patent/JPS61229634A/en
Priority to US06/840,083 priority patent/US4676856A/en
Priority to CA000504230A priority patent/CA1262254A/en
Priority to DE19863609050 priority patent/DE3609050A1/en
Publication of JPS61229634A publication Critical patent/JPS61229634A/en
Publication of JPH0376256B2 publication Critical patent/JPH0376256B2/ja
Granted legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/06Sealing strips
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60JWINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J10/00Sealing arrangements
    • B60J10/15Sealing arrangements characterised by the material
    • B60J10/16Sealing arrangements characterised by the material consisting of two or more plastic materials having different physical or chemical properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60JWINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J10/00Sealing arrangements
    • B60J10/15Sealing arrangements characterised by the material
    • B60J10/18Sealing arrangements characterised by the material provided with reinforcements or inserts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60JWINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J10/00Sealing arrangements
    • B60J10/30Sealing arrangements characterised by the fastening means
    • B60J10/32Sealing arrangements characterised by the fastening means using integral U-shaped retainers
    • B60J10/33Sealing arrangements characterised by the fastening means using integral U-shaped retainers characterised by the configuration of the retaining lips

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は、自動車ボデーの開口と該開口を開閉
する開閉部材との間をシールするウエザストリツ
プの製造方法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing a weather strip that seals between an opening in an automobile body and an opening/closing member that opens and closes the opening.

[従来技術] この種のウエザストリツプとして、第11図に
示すように断面U字形でその内部対向面にボデー
開口のフランジを挟持する保持リツプ13を有す
る基部11と、その外面から突出するシール部1
2aを備え、また必要によりリツプ状の補助シー
ル部12bを備えたものがある。
[Prior Art] As shown in FIG. 11, this type of weather strip has a base 11 that has a U-shaped cross section and has a retaining lip 13 on its internal facing surface that holds a flange of a body opening, and a seal portion 1 that protrudes from the outer surface of the base 11.
2a and, if necessary, a lip-shaped auxiliary seal portion 12b.

このウエザストリツプ1の基部11はソリツド
ゴムよりなり、板金の芯材14が埋設されてい
る。シール部12a,12bはスポンジゴムより
なる。芯材14は、ウエザストリツプ1の屈曲変
形性をよくするために、第12図に示すように多
数の芯材片に分断されているものが多い。芯材1
4はウエザストリツプ1を製造する過程において
分断される。
The base 11 of this weather strip 1 is made of solid rubber, and a core material 14 of sheet metal is embedded therein. The seal parts 12a and 12b are made of sponge rubber. In order to improve the bending deformability of the weather strip 1, the core material 14 is often divided into a number of core material pieces as shown in FIG. 12. Core material 1
4 is separated in the process of manufacturing the weather strip 1.

ウエザストリツプ1は押出成形により製造され
る。第13図は押出成形前の芯材14を示すもの
で、長尺平板状の板金に長手方向に所定の間隔を
おいて幅方向のスロツト141が形成されてい
る。スロツト141は交互に長さが異なつてい
る。この芯材14に芯材面に垂直方向の曲げ応力
を加えると、長いスロツトの両端の幅が狭い部分
140に応力が集中して破断され、第12図に示
すような分断状態となる。
The weather strip 1 is manufactured by extrusion molding. FIG. 13 shows the core material 14 before extrusion molding, in which slots 141 in the width direction are formed in a long flat sheet metal at predetermined intervals in the longitudinal direction. The slots 141 alternate in length. When a bending stress is applied to the core material 14 in a direction perpendicular to the surface of the core material, the stress is concentrated on the narrow portions 140 at both ends of the long slot and the core material 14 is broken, resulting in a divided state as shown in FIG.

第11図に示すウエザストリツプ1を製造する
には、第13図に示すような板金の芯材14を送
給して、これとソリツドゴムおよびスポンジゴム
とを一体押出成形し、芯材14をソリツドゴムが
平板状に包み、このソリツドゴムからシール部1
2a,12bが突出する押出成形体を得る。
To manufacture the weather strip 1 shown in FIG. 11, a sheet metal core material 14 as shown in FIG. 13 is supplied, and solid rubber and sponge rubber are integrally extruded to form the core material 14. Wrap it in a flat plate and seal part 1 from this solid rubber.
An extrusion molded body having protruding portions 2a and 12b is obtained.

次に押出成形体は高周波誘導加熱装置へ送ら
れ、更に高周波誘電加熱装置へ送られる。高周波
誘導加熱装置では金属の芯材14が120〜150℃に
加熱され、高周波誘導加熱によりゴム材料が200
〜220℃程度に加熱される。そして押出成形体は
熱風槽を通り、200℃前後に保持されて加硫され、
冷却槽にて冷却される。
Next, the extruded body is sent to a high frequency induction heating device, and further sent to a high frequency dielectric heating device. In the high-frequency induction heating device, the metal core material 14 is heated to 120 to 150°C, and the rubber material is heated to 200°C by high-frequency induction heating.
Heated to ~220℃. The extruded body is then passed through a hot air tank, maintained at around 200℃, and vulcanized.
It is cooled in a cooling tank.

冷却された押出成形体は次に芯材分離機へ送ら
れる。分離機ではローラにより押出成形体に芯材
面と垂直方向の曲げ応力が繰り代えし加えられ
て、成形体内の芯材14は応力集中部で破断さ
れ、芯材は第12図に示すように多数の芯材片に
分断される。
The cooled extrudate is then sent to a core separator. In the separator, rollers repeatedly apply bending stress to the extruded molded product in a direction perpendicular to the core material surface, and the core material 14 in the molded product is broken at the stress concentration area, and the core material is broken as shown in FIG. It is divided into many core pieces.

そして次に押出成形体はU字曲げ機に送られ、
芯材14を包むソリツドゴム部が断面U字形に曲
げ加工されて基部11が形成され、ウエザストリ
ツプ製品が得られる。製品は最終的に所定の長さ
に裁断機で裁断される。
Then the extrudate is sent to a U-bending machine,
The solid rubber part surrounding the core material 14 is bent into a U-shaped cross section to form the base part 11, and a weather strip product is obtained. The product is finally cut to a predetermined length using a cutting machine.

[本発明が解決しようとする問題点] ところで、芯材が分断されていると、ウエザス
トリツプの屈曲変形性がよく、ボデー開口のコー
ナ部への取付けが容易となるが、一方において不
都合も起り得る。
[Problems to be Solved by the Present Invention] By the way, if the core material is divided, the weather strip has good bending deformability and can be easily attached to the corner of the body opening, but on the other hand, inconveniences may also occur. .

即ち、ウエザストリツプをボデー開口のフラン
ジに組付ける場合、若干張力を加えた状態で長手
方向に順次組付けられるが、一般に手作業で行な
われるので張力の過不足によりたるみが生じたり
ウエザストリツプが伸びすぎることがある。特に
第12図に示すようなコーナ部ではたるみや過度
の伸びが発生しやすくウエザストリツプ脱落の原
因となる。
That is, when a weather strip is attached to a flange of a body opening, it is attached sequentially in the longitudinal direction with a slight tension applied, but since this is generally done by hand, there is a possibility that the weather strip may sag or become too stretched due to too much or too little tension. There is. Particularly at corner portions as shown in FIG. 12, sagging or excessive elongation is likely to occur, causing the weather strip to fall off.

また、製造工程においても、芯材分離機による
芯材分離工程ではステーシヨン数を15程度として
繰返し曲げ応力を加えており、また芯材をU字形
に曲げ加工するのに4Kg/cm2程度の大きな圧力を
必要とする。
In addition, in the manufacturing process, the core material separation process using a core material separator uses approximately 15 stations to repeatedly apply bending stress, and in order to bend the core material into a U-shape, a large amount of approximately 4 kg/cm 2 is required. Requires pressure.

このような実情から、製造工程中、特に芯材の
分離、曲げ加工の簡易化が強く要望されている。
Under these circumstances, there is a strong demand for simplification of core material separation and bending during the manufacturing process.

そこで本発明は、コーナ部、特にウエザストリ
ツプの幅方向に湾曲するコーナ部への組付けの場
合に充分な屈曲変形性を有し、かつたるみや伸び
の発生しない軽量なウエザストリツプを従来より
も簡易化された手段により製造し得る製造方法を
提供することを目的とする。
Therefore, the present invention aims to create a lightweight weather strip that has sufficient bending deformability and does not sag or stretch when attached to a corner part, especially a corner part that curves in the width direction of the weather strip, and is simpler than the conventional one. The object of the present invention is to provide a manufacturing method that can be manufactured by the means described above.

[問題点を解決するための手段および作用効果] 本発明のウエザストリツプの製造方法では、芯
材として熱可塑性合成樹脂、例えばABC樹脂、
塩化ビニル樹脂、ポリプロピレン樹脂等よりなる
芯材を用いる。かつ芯材は幅方向の一部、例えば
第2図に示すように、取付時にコーナ部の内径側
となる一端が長手方向に連続し、外径側となる部
分が長手方向に所定の間隔で分断せしめられた形
態とする。
[Means and effects for solving the problems] In the method for manufacturing a weather strip of the present invention, a thermoplastic synthetic resin, such as ABC resin,
A core material made of vinyl chloride resin, polypropylene resin, etc. is used. In addition, the core material has a part in the width direction, for example, as shown in Fig. 2, one end that becomes the inner diameter side of the corner part when installed is continuous in the longitudinal direction, and the part that becomes the outer diameter side is formed at a predetermined interval in the longitudinal direction. It has a divided form.

ウエザストリツプを得るための本発明の第1の
製造方法では、先ず第3図に示すような幅方向の
一部、例えば一方の端部に沿い長手方向の連続部
142を有し、他の部分が長手方向に所定の間隔
で分断された熱可塑性合成樹脂の芯材14をゴム
材料とともに押出成形して第5図Bに示すような
押出成形体を得、押出成形体を昇温および保温し
て加硫を行つて後、芯材が軟化状態にある間にU
字曲げを行つて第5図Cのような製品を得、冷却
する。
In the first manufacturing method of the present invention for obtaining a weather strip, first, as shown in FIG. A thermoplastic synthetic resin core material 14 divided at predetermined intervals in the longitudinal direction is extruded together with a rubber material to obtain an extruded body as shown in FIG. 5B, and the extruded body is heated and kept warm. After vulcanization, while the core material is in a softened state, U
Bending is performed to obtain a product as shown in Figure 5C, and the product is cooled.

本方法では芯材の破断を必要としない。また、
加硫後樹脂芯材が軟化の状態でU字曲げを行なう
ので、工程の簡略化および小さい荷重で容易に曲
げ加工ができる。
This method does not require breaking the core material. Also,
Since the U-shaped bending is performed while the resin core material is softened after vulcanization, the process can be simplified and the bending process can be easily performed with a small load.

本発明の第2の製造方法では、第7図に示すよ
うな、幅方向中央部がスロツト141により長手
方向に所定間隔で分離され、一方の端部は長手方
向の連続部142を形成し、他方の端部は切込み
線143により破断可能とされた熱可塑性合成樹
脂の芯材14を用いる。本方法では、第1の製造
方法と同様に押出成形および加硫を行なう。次に
押出成形体を冷却して芯材14を切込み線143
で破断し、続いて予熱をおこなつて芯材を軟化せ
しめて後、U字曲げ加工を行なう。
In the second manufacturing method of the present invention, as shown in FIG. 7, the center portion in the width direction is separated by a slot 141 at a predetermined interval in the longitudinal direction, and one end portion forms a continuous portion 142 in the longitudinal direction, The other end uses a core material 14 made of thermoplastic synthetic resin that can be broken along a score line 143. In this method, extrusion molding and vulcanization are performed in the same manner as in the first manufacturing method. Next, the extrusion molded body is cooled and the core material 14 is cut along the score line 143.
After that, the core material is preheated to soften it, and then U-shaped bending is performed.

なお、第1の方法との相違は、両端が連結され
た芯材を用い、押出成形後の両端部の一方を破断
することである。これは後記するように押出成形
時に芯材が変形するおそれをなくするためであ
る。
Note that the difference from the first method is that a core material whose both ends are connected is used, and one of the both ends is broken after extrusion molding. This is to eliminate the possibility that the core material will be deformed during extrusion molding, as will be described later.

本発明において、加硫工程では従来より行なわ
れているようにガラスビーズ等の熱媒体により押
出成形体を外面から昇温する手段も用いられ得る
が、高周波誘電加熱を行なうのが能率的である。
この場合、金属芯材埋設のウエザストリツプの如
く、高周波誘導加熱を併用する必要はない。即
ち、金属芯材のものでは、先ず高周波誘導加熱で
芯材を昇温させ、更に高周波誘電加熱でゴムを昇
温せしめているが、合成樹脂芯材では高周波誘電
加熱のみでゴムとともに芯材も昇温させることが
できるので、ゴム材をその中心部まで充分に加硫
することができる。
In the present invention, in the vulcanization process, it is possible to use a conventional means of raising the temperature of the extruded body from the outside using a heating medium such as glass beads, but it is more efficient to perform high-frequency dielectric heating. .
In this case, there is no need to use high-frequency induction heating in conjunction with a weather strip embedded in a metal core. In other words, with metal core materials, the temperature of the core material is first raised by high-frequency induction heating, and then the temperature of the rubber is raised with high-frequency dielectric heating, but with synthetic resin core materials, the core material is heated together with the rubber using only high-frequency dielectric heating. Since the temperature can be raised, the rubber material can be sufficiently vulcanized to its center.

なお、加硫工程において、軟化している合成樹
脂芯材では工程の終端から引張つて引取ることは
できない。従つて加硫工程の一部または全部にベ
ルトコンベアー等の搬送手段を設け、押出成形体
にかかる張力を極力低減させる手段を講じる必要
がある。
In addition, in the vulcanization process, the softened synthetic resin core material cannot be pulled out from the end of the process. Therefore, it is necessary to provide a conveying means such as a belt conveyor in part or all of the vulcanization process to reduce the tension applied to the extruded product as much as possible.

本発明により得られるウエザストリツプは芯材
の一部が長手方向に連続しているからウエザスト
リツプ組付け時に従来のようにたるみや伸びが発
生しない。そして特に芯材は合成樹脂製であるか
ら連続部の変形が容易であつてウエザストリツプ
の屈曲変形性がよい。
In the weatherstrip obtained according to the present invention, a portion of the core material is continuous in the longitudinal direction, so that when the weatherstrip is assembled, no sagging or elongation occurs as in conventional weatherstrips. In particular, since the core material is made of synthetic resin, the continuous portion can be easily deformed, and the weather strip has good bending deformability.

[実施例] 以下、本発明を実施例により詳細に説明する。[Example] Hereinafter, the present invention will be explained in detail with reference to Examples.

本発明の第1の製造方法により製造されたウエ
ザストリツプは第1図に示すように断面U字型の
基部11とシール部12a,12bを備えてい
る。基部11は、保持リツプ13を有する。
As shown in FIG. 1, the weatherstrip manufactured by the first manufacturing method of the present invention includes a base portion 11 having a U-shaped cross section and seal portions 12a and 12b. The base 11 has a retaining lip 13.

基部11内には熱可塑性合成樹脂の芯材14が
埋設してある。芯材14は第2図に示すように、
断面U字型の一方の側面が長手方向に連続部14
2となつており、上面および他の側面は長手方向
に所定の間隔をおいてスロツト141にて分断さ
れている。ウエザストリツプ1は連続部142が
コーナの内径側となるようにして、ボデー開口に
組付けられる。基部11のゴム材料はソリツドゴ
ムであり、シール部12a,12bはスポンジゴ
ムである。なお、144は芯材とゴムとの密着性
を増すための穴である。
A core material 14 made of thermoplastic synthetic resin is embedded within the base portion 11 . As shown in FIG. 2, the core material 14 is
One side of the U-shaped cross section is a continuous part 14 in the longitudinal direction.
2, and the upper surface and other side surfaces are separated by slots 141 at predetermined intervals in the longitudinal direction. The weather strip 1 is assembled into the body opening so that the continuous portion 142 is on the inner diameter side of the corner. The rubber material of the base portion 11 is solid rubber, and the seal portions 12a, 12b are made of sponge rubber. Note that 144 is a hole for increasing the adhesion between the core material and the rubber.

次に上記ウエザストリツプの製造方法を第3
図、第4図および第5図に示す。
Next, the third method for manufacturing the weather strip described above is described.
4 and 5.

第3図に示すように、幅方向の一方の端部に沿
う部分が長手方向の連続部142を形成し、他の
部分がスロツト141により長手方向に所定間隔
で分断された熱可塑性合成樹脂よりなる長尺板状
の芯材14を用いる。
As shown in FIG. 3, a portion along one end in the width direction forms a continuous portion 142 in the longitudinal direction, and the other portion is made of thermoplastic synthetic resin divided at predetermined intervals in the longitudinal direction by slots 141. A long plate-shaped core material 14 is used.

第4図に示すように、先ず芯材送給工程で、上
記芯材14を台車2より送給する。次に押出成形
工程において、芯材14を押出機3によりゴム材
料と一体押出成形する。第5図Bは押出成形体を
示すもので、芯材14はソリツドゴムに包まれ、
ソリツドゴムからはスポンジゴムのシール部12
a,12bが突出している。
As shown in FIG. 4, first, in a core material feeding step, the core material 14 is fed from the cart 2. Next, in an extrusion molding step, the core material 14 is integrally extruded with the rubber material by the extruder 3. FIG. 5B shows an extrusion molded product, in which the core material 14 is wrapped in solid rubber.
Seal part 12 of sponge rubber from solid rubber
a and 12b protrude.

押出成形体は加硫工程へ送られる。即ち、高周
波誘電加熱装置4により押出成形体120〜150℃程
度に加熱し、200〜220℃程度の熱風槽5を通過せ
しめ保温する過程で加硫する。従来の如く、高周
波誘導加熱を必要としない。
The extruded body is sent to a vulcanization process. That is, the extruded molded product is heated to about 120 to 150°C by a high-frequency dielectric heating device 4, and is vulcanized during the process of passing through a hot air tank 5 at about 200 to 220°C and keeping it warm. Unlike conventional methods, high frequency induction heating is not required.

次に押出成形体を徐冷槽6へ送り、120〜140℃
程度まで徐冷して芯材14を曲げ加工に適した軟
化状態とする。続いて基部成形工程において芯材
14を含むソリツドゴム部を曲げ機9により断面
U字形に曲げ加工する。第2図は曲げ加工された
裁断14を示す。但し同図はウエザストリツプが
コーナ部に装着されたときの芯材を示すもので、
製造工程では芯材14は直線状となつている。
Next, the extruded body is sent to an annealing tank 6 and heated to a temperature of 120 to 140°C.
The core material 14 is softened to a degree suitable for bending. Subsequently, in a base forming step, the solid rubber portion including the core material 14 is bent into a U-shaped cross section by a bending machine 9. FIG. 2 shows the cut 14 which has been bent. However, this figure shows the core material when the weather strip is attached to the corner.
During the manufacturing process, the core material 14 has a straight shape.

次に冷風送給機10による冷却工程で芯材14
を冷却し、U字形状を安定させる。第5図Cに得
られたウエザストリツプを示す。最後に裁断機1
1によりウエザストリツプを所定長さに裁断す
る。
Next, the core material 14 is cooled in a cooling process by the cold air feeder 10
to stabilize the U-shape. FIG. 5C shows the weather strip obtained. Finally, cutting machine 1
1. Cut the weather strip to a predetermined length.

なお、押出成形する芯材14は第9図に示すよ
うに、第3図の芯材の一方の側が予め曲げ成形さ
れたものを用いてもよい。
As shown in FIG. 9, the core material 14 to be extruded may be formed by bending one side of the core material shown in FIG. 3 in advance.

第7図および第8図は本発明の第2の製造方法
を示すものである。
FIGS. 7 and 8 show a second manufacturing method of the present invention.

第7図に示すように、幅方向の一方の端部に沿
う部分が長手方向の連続部142を形成し、中央
部には長手方向に所定の間隔をおいて形成したス
ロツト141を有し、他の端部に沿う部分には上
記スロツト141の延長位置にみじかいスロツト
141′を形成してこれ等スロツト141,14
1′間には狭い連続部が存在し、各連続部には切
込み線143を形成した熱可塑性合成樹脂の芯材
14を用いる。
As shown in FIG. 7, a portion along one end in the width direction forms a continuous portion 142 in the longitudinal direction, and the central portion has slots 141 formed at predetermined intervals in the longitudinal direction. Along the other end, a small slot 141' is formed at the extension position of the slot 141, and these slots 141, 14
A narrow continuous portion exists between 1', and a core material 14 made of thermoplastic synthetic resin with a score line 143 formed therein is used for each continuous portion.

本方法の加硫工程までの工程は第1の製造方法
と同じである。第8図に示すように、熱風槽5か
ら送出された押出成形体を冷却槽6Aで冷却し、
芯材14を硬化または半硬化させる。次に芯材分
離機7のローラを通す過程で芯材14を包むソリ
ツドゴム部に芯材面に垂直方向の曲げ応力を加え
て芯材14をその切込み線143(第7図)で破
断する。
The steps of this method up to the vulcanization step are the same as the first manufacturing method. As shown in FIG. 8, the extruded body sent out from the hot air tank 5 is cooled in a cooling tank 6A,
The core material 14 is hardened or semi-hardened. Next, in the process of passing the core material 14 through the rollers of the core material separator 7, a bending stress in a direction perpendicular to the surface of the core material is applied to the solid rubber part surrounding the core material 14, and the core material 14 is broken at its score line 143 (FIG. 7).

次に予熱槽8で押出成形体を加熱して芯材14
を軟化せしめ、曲げ機9で芯材を含むソリツドゴ
ム部を断面U字形に曲げ加工する。以下の工程は
第1の製造方法と同じである。
Next, the extrusion molded body is heated in the preheating tank 8 and the core material 14 is heated.
is softened, and the solid rubber portion including the core material is bent into a U-shaped cross section using a bending machine 9. The following steps are the same as the first manufacturing method.

得られる製品は第1の製造方法によるものと実
質的に同じであるが芯材14に破断部144(第
6図)がある点でのみ異なる。
The resulting product is substantially the same as that produced by the first manufacturing method, except that there is a break 144 (FIG. 6) in the core material 14.

なお、第2の製造方法においても、第9図に示
すように予め芯材をL字形にしたものを用いるこ
とができる。この場合、後で破断される連結部1
44を長辺側とした方が、芯材分離の際に応力が
加えやすい。
Note that in the second manufacturing method as well, it is possible to use a core material that is previously L-shaped as shown in FIG. In this case, the connection 1 that will be broken later
It is easier to apply stress when separating the core material if 44 is on the long side.

第2の製造方法は第1の製造方法にくらべ芯材
分離工程の他、若干工程が増す。しかしながら、
第1の製造方法における芯材では、押出成形時、
第10図に示すように、進行方向(矢印)に対し
分断部が後方へ傾斜する変形が生じることがあ
る。第2の製造方法における芯材では幅方向両側
が連結しているので、かかる変形が生じることは
ない。
The second manufacturing method requires a few more steps than the first manufacturing method, in addition to the core material separation step. however,
In the core material in the first manufacturing method, during extrusion molding,
As shown in FIG. 10, deformation may occur in which the dividing portion inclines rearward with respect to the direction of travel (arrow). Since the core material in the second manufacturing method is connected on both sides in the width direction, such deformation does not occur.

以上説明したように、本発明により製造された
ウエザストリツプでは、用いる芯材の形状、材質
より、ボデー開口、特にコーナ部への装着時、伸
びやたるみが生じず、かつ、コーナに沿つて容易
に屈曲させることができる。またウエザストリツ
プが軽量化される。
As explained above, the weatherstrip manufactured according to the present invention does not stretch or sag when attached to a body opening, especially at a corner, and can easily be attached to a corner due to the shape and material of the core material used. Can be bent. The weather strip is also lighter.

そして本発明は、上記のすぐれた特性を有する
ウエザストリツプを、芯材の加熱による軟化性を
利用して、従来の金属芯材埋設のウエザストリツ
プよりも簡易かつ低コストで製造することができ
る。
According to the present invention, a weatherstrip having the above-mentioned excellent properties can be manufactured more easily and at lower cost than conventional weatherstrips in which a metal core is embedded by utilizing the softening property of the core material when heated.

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

第1図は本発明により製造されたウエザストリ
ツプの断面図、第2図は埋設状態での芯材の一例
を示す図、第3図は第2図の芯材のウザストリツ
プへの埋設前の状態を示す図、第4図は第3図の
芯材を用いたウエザストリツプの製造工程(第1
の製造方法)を示す図、第5図A,B,Cはそれ
ぞれ第4図のA−A線、B−B線、C−C線に沿
う断面図、第6図は埋設状態での芯材の他の例を
示す図、第7図は第6図の芯材のウエザストリツ
プへの埋設前の状態を示す図、第8図は第7図の
芯材を用いたウエザストリツプの製造工程(第2
の製造方法)を示す図、第9図は第7図の芯材の
変形例を示す斜視図、第10図は押出成形時の芯
材のねじれを示す図、第11図〜第13図は従来
例を示すもので第11図はウエザストリツプの断
面図、第12図は埋設状態での芯材を示す図、第
13図Aは埋設前の芯材の平面図、第13図Bは
第13図AのB−B線断面図である。 1……ウエザストリツプ、11……基部、12
a,12b……シール部、14……芯材、3……
押出機、4……高周波誘電加熱装置、6……徐冷
槽、6A……冷却槽、7……芯材分離機、8……
予熱槽、9……芯材曲げ機、11……裁断機。
FIG. 1 is a cross-sectional view of a weather strip manufactured according to the present invention, FIG. 2 is a diagram showing an example of the core material in an embedded state, and FIG. 3 is a diagram showing the state of the core material in FIG. 2 before being embedded in the weather strip. The figure shown in Fig. 4 shows the manufacturing process (first step) of a weather strip using the core material shown in Fig. 3.
Figures 5A, B, and C are cross-sectional views taken along lines A-A, B-B, and C-C in Figure 4, respectively, and Figure 6 shows the core in the buried state. Figure 7 shows the state of the core material in Figure 6 before it is embedded in the weatherstrip. Figure 8 shows the manufacturing process of the weatherstrip using the core material in Figure 7. 2
9 is a perspective view showing a modified example of the core material in FIG. 7, FIG. 10 is a diagram showing twisting of the core material during extrusion molding, and FIGS. 11 to 13 are 11 is a cross-sectional view of the weather strip, FIG. 12 is a diagram showing the core material in the buried state, FIG. 13A is a plan view of the core material before being buried, and FIG. 13B is a cross-sectional view of the weather strip. It is a sectional view taken along the line BB in Figure A. 1... Weather strip, 11... Base, 12
a, 12b... Seal part, 14... Core material, 3...
Extruder, 4... High frequency dielectric heating device, 6... Annealing tank, 6A... Cooling tank, 7... Core material separator, 8...
Preheating tank, 9... Core material bending machine, 11... Cutting machine.

Claims (1)

【特許請求の範囲】 1 断面U字形の基部と、基部より突出するシー
ル部を備え、基部の内部に芯材を埋設した自動車
用ウエザストリツプの製造方法であつて、熱可塑
性合成樹脂よりなる長尺板状で、その幅方向の一
部を長手方向に連続せしめ、他の部分が長手方向
に所定の間隔をおいて分断せしめてある芯材を送
給する芯材送給行程と、送給された芯材とゴム材
料とを一体押出成形して、芯材がゴムにより被覆
され、かつシール部が突出する押出成形体を得る
押出成形行程と、押出成形体を昇温および保温し
加硫する加硫行程と、軟化状態にある芯材を内包
する押出成形体を断面U字形に曲げ加工する基部
形成行程と、基部が成形されたウエザストリツプ
を冷却して形状安定化をなす冷却行程と、ウエザ
ストリツプを所定長さに裁断する裁断行程とより
なる自動車用ウエザストリツプの製造方法。 2 断面U字形の基部と、基部より突出するシー
ル部を備え、基部の内部に芯材を埋設した自動車
用ウエザストリツプの製造方法であつて、熱可塑
性合成樹脂よりなる長尺板状で、幅方向の両端部
を残して中央部が長手方向に所定の間隔をおいて
分断し、一方の端部は長手方向に連続し、かつ他
方の端部は長手方向に所定の間隔をおいて破断可
能とした芯材を送給する芯材送給行程と、送給さ
れた芯材とゴム材料とを一体押出成形して、芯材
がゴムにより被覆され、かつシール部が突出する
押出成形体を得る押出成形行程と、押出成形体を
昇温および保温し加硫する加硫行程と、加硫した
押出成形体を冷却する冷却行程と、冷却された押
出成形体に芯材面と垂直方向の応力を加え幅方向
の上記他方の端部を長手方向に所定の間隔をおい
て分断せしめる芯材分離行程と、芯材を内包する
押出成形体を加熱して芯材を軟化せしめる芯材予
熱行程と、予熱された芯材を内包する押出成形体
を断面U字形に曲げ加工する基部形成行程と、基
部が成形されたウエザストリツプを冷却して形状
安定化をなす冷却行程と、ウエザストリツプを所
定長さに裁断する裁断行程とよりなる自動車用ウ
エザストリツプの製造方法。
[Scope of Claims] 1. A method for manufacturing an automobile weather strip comprising a base having a U-shaped cross section, a seal portion protruding from the base, and a core material embedded inside the base, the weather strip comprising a long length made of thermoplastic synthetic resin. A core material feeding process that feeds a core material that is plate-shaped and has a part of its width continuous in the longitudinal direction and the other part separated at predetermined intervals in the longitudinal direction; An extrusion molding step in which the core material and the rubber material are integrally extruded to obtain an extrusion molded product in which the core material is covered with rubber and the seal portion protrudes, and the extrusion molded product is heated and kept at a temperature to be vulcanized. A vulcanization process, a base forming process in which the extruded molded body containing the core material in a softened state is bent into a U-shaped cross section, a cooling process in which the weatherstrip with the base formed therein is cooled to stabilize its shape, and the weatherstrip is A method for manufacturing automotive weather strips, which comprises a cutting process of cutting the weather strips to a predetermined length. 2. A method for manufacturing a weather strip for an automobile, which has a base having a U-shaped cross section, a seal portion protruding from the base, and a core material embedded inside the base, the weather strip having a long plate shape made of thermoplastic synthetic resin, The center part is separated at a predetermined interval in the longitudinal direction, leaving both ends, one end is continuous in the longitudinal direction, and the other end can be broken at a predetermined interval in the longitudinal direction. A core material feeding step in which the core material is fed, and the fed core material and the rubber material are integrally extruded to obtain an extrusion molded body in which the core material is covered with rubber and the seal portion protrudes. An extrusion molding process, a vulcanization process in which the extrusion molded body is heated and kept warm, and vulcanized, a cooling process in which the vulcanized extrusion molded body is cooled, and a stress in the direction perpendicular to the core material surface is applied to the cooled extrusion molded body. a core material separation process in which the other end in the width direction is separated at a predetermined interval in the longitudinal direction, and a core material preheating process in which the extrusion molded body containing the core material is heated to soften the core material. , a base forming step in which the extrusion molded body containing the preheated core material is bent into a U-shaped cross section, a cooling step in which the weather strip with the base formed thereon is cooled to stabilize its shape, and a weather strip is formed into a predetermined length. A method for manufacturing automotive weather strips, which comprises a cutting process.
JP60069592A 1985-03-18 1985-04-02 Weather strip for car and its production Granted JPS61229634A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP60069592A JPS61229634A (en) 1985-04-02 1985-04-02 Weather strip for car and its production
US06/840,083 US4676856A (en) 1985-03-18 1986-03-17 Weather strip for vehicle and producing method thereof
CA000504230A CA1262254A (en) 1985-03-18 1986-03-17 Weather strip for vehicle and producing method thereof
DE19863609050 DE3609050A1 (en) 1985-03-18 1986-03-18 SEALING STRIP FOR A MOTOR VEHICLE AND METHOD FOR THEIR PRODUCTION

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60069592A JPS61229634A (en) 1985-04-02 1985-04-02 Weather strip for car and its production

Publications (2)

Publication Number Publication Date
JPS61229634A JPS61229634A (en) 1986-10-13
JPH0376256B2 true JPH0376256B2 (en) 1991-12-04

Family

ID=13407252

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60069592A Granted JPS61229634A (en) 1985-03-18 1985-04-02 Weather strip for car and its production

Country Status (1)

Country Link
JP (1) JPS61229634A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH079710Y2 (en) * 1988-06-11 1995-03-08 西川ゴム工業株式会社 Weather strip core structure
US7467495B2 (en) * 2002-09-03 2008-12-23 Troester Gmbh And Co. Kg Vehicle seal with discontinuous alterating soft and rigid u-shaped segments and method of forming same
US7044525B2 (en) 2002-10-22 2006-05-16 Tokiwa Chemical Industries Co., Ltd. Automotive extrusion-molded product and manufacturing method therefor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5543901B2 (en) * 1977-10-01 1980-11-08
JPS5726023A (en) * 1980-07-24 1982-02-12 Kinugawa Rubber Ind Co Ltd Welt and manufacturing thereof

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5250497Y2 (en) * 1972-04-03 1977-11-16
JPS545445Y2 (en) * 1974-03-06 1979-03-10
JPS5543901U (en) * 1978-03-31 1980-03-22

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5543901B2 (en) * 1977-10-01 1980-11-08
JPS5726023A (en) * 1980-07-24 1982-02-12 Kinugawa Rubber Ind Co Ltd Welt and manufacturing thereof

Also Published As

Publication number Publication date
JPS61229634A (en) 1986-10-13

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