JP3740563B2 - Weather strip manufacturing method - Google Patents

Weather strip manufacturing method Download PDF

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Publication number
JP3740563B2
JP3740563B2 JP12219597A JP12219597A JP3740563B2 JP 3740563 B2 JP3740563 B2 JP 3740563B2 JP 12219597 A JP12219597 A JP 12219597A JP 12219597 A JP12219597 A JP 12219597A JP 3740563 B2 JP3740563 B2 JP 3740563B2
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JP
Japan
Prior art keywords
mold
hollow seal
holding member
weather strip
molding
Prior art date
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Expired - Fee Related
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JP12219597A
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Japanese (ja)
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JPH10309752A (en
Inventor
次弘 矢野
智仁 植田
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.)
Toyo Tire Corp
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Toyo Tire and Rubber Co Ltd
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Publication date
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Priority to JP12219597A priority Critical patent/JP3740563B2/en
Publication of JPH10309752A publication Critical patent/JPH10309752A/en
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Publication of JP3740563B2 publication Critical patent/JP3740563B2/en
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  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Seal Device For Vehicle (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、自動車のトランク部や乗降用ドア部等の車体開口部において、車体開口縁部又はドア縁部に取付けられて当該開口部をシールするウエザストリップの製造方法に関する。
【0002】
【従来の技術】
自動車のウエザストリップには、車体開口縁部又はドア縁部に取付けられる取付基部とこの取付基部から膨出する中空シール部を備えるものがある。従来より、かかるウエザストリップにおいては、押出成形による押出し部の端部同士を型成形よりなる型成形部で接続しており、その際、型成形部における中空シール部を、型成形時に、成形型に中子を配することにより形成している。
【0003】
このようなウエザストリップにおいては、型成形部における中空シール部の形状保持、即ちドアを強く閉じる時のオーバーストロークによるドアとボディとの干渉を防止する効果を持つ形状保持のために、当該中空シール部内にスポンジゴム等よりなる保持部材を配設することがある。
【0004】
従来、かかる保持部材を配設するに際しては、図8に示すように、押出し部101,101を接続する型成形部103の加硫成形後に、押出し部101の端部において中空シール部102を切り裂き、この切り裂き口105から保持部材106を挿入して型成形部103の中空シール部104内に配設し、その後、上記切り裂き口105を接着することがなされている。
【0005】
【発明が解決しようとする課題】
しかしながら、上記従来の方法では、保持部材106を挿入するために中空シール部102を切り裂いたり、挿入後に中空シール部102を接着したりするのに工数がかかるという問題がある。また、このように中空シール部102を接着するため、接着面に段差が発生したり、接着剤による硬度変化が生じて、ウエザストリップの品質が悪化するという問題がある。
【0006】
そこで、本発明は、型成形後に中空シール部を切り裂くことなく、型成形部に保持部材を配設することができ、もって品質の確保及び製造工数の改善を図ることできるウエザストリップの製造方法を提供することを目的とする。
【0007】
【課題を解決するための手段】
本発明の請求項1記載のウエザストリップの製造方法は、中空シール部を備えるウエザストリップであって、押出成形による押出し部の端部同士が型成形による型成形部で接続され、この型成形部における中空シール部が型成形時に成形型に配した中子により形成され、この型成形部における中空シール部内に形状保持のための保持部材が配設されたウエザストリップの製造方法において、型成形に際し、中子に前記保持部材を取付け、この取付けた状態で型成形部を形成し、その後、中空シール部から中子を抜き取ることを特徴とする。
【0008】
このように、中子に保持部材を取付けた状態で型成形部を形成して押出し部の端部同士を接続し、その後、中子を抜き出すことにより、保持部材は、型成形時に、型成形部の中空シール部内に一体的に固定された状態で、配設される。そのため、型成形後に中空シール部を切り裂くことなく、型成形部に保持部材を配設することができるので、ウエザストリップの品質を確保することができ、また、製造工数的にも改善される。
【0009】
請求項2記載のウエザストリップの製造方法は、中空シール部を備えるウエザストリップであって、押出成形による押出し部の端部同士が型成形による型成形部で接続され、この型成形部における中空シール部が型成形時に成形型に配した中子により形成され、この型成形部における中空シール部内に形状保持のための保持部材が配設されたウエザストリップの製造方法において、型成形に際し、押出し部における中空シール部内に前記保持部材を挿入しておき、この挿入した状態で型成形部を形成し、中空シール部から中子を抜き取った後に、押出し部に挿入しておいた保持部材を型成形部に移動させることを特徴とする。
【0010】
このように、押出し部の中空シール部に保持部材を予め挿入しておき、型成形部を形成して押出し部の端部同士を接続し、中子を抜き取った後に、この挿入しておいた保持部材を型成形部に移動させるので、型成形後に中空シール部を切り裂くことなく、型成形部に保持部材を配設することができる。そのため、ウエザストリップの品質を確保することができ、また、製造工数的にも改善される。また、この製造方法であると、中子を抜き出すために中空シール部に設けた中子抜き穴の位置と保持部材の長さを調整することにより、型成形後に移動させた保持部材で該中子抜き穴を塞ぐことができるので、ウエザストリップの見栄え向上を図ることもできる。
【0011】
【発明の実施の形態】
以下、本発明の実施形態について図面を参照して説明する。
【0012】
図1は、本発明の第1の実施形態に係るウエザストリップの製造方法における型成形時のウエザストリップの要部斜視図である。
【0013】
この実施形態におけるウエザストリップ10は、図5に示す自動車のトランク部における車体開口部1をシールするものであり、図4に示すように、ボディフランジ2に取付けられる断面略逆U字状の取付基部12と、この取付基部12の頂部から膨出してドア3縁部と当接する断面略円形状の中空シール部14とを備えてなる。ここで、取付基部12はソリッドゴムよりなり、内部にインサートメタル16が埋設されており、一方、中空シール部14はスポンジゴムよりなる。なお、符号17は、取付基部12の下端部から突出形成されたシールリップであり、ボディ面と当接している。また、符号18は、ボディフランジ2を保持するために取付基部12の内面に突出形成された保持リップである。
【0014】
このウエザストリップ10は、押出成形してなる1本の押出し部20の両端部を、型成形よりなる型成形部22で接続して輪状に形成したものであり、車体開口部1の全周にわたって一体に形成されている。そして、図5に示すように、この型成形部22が、車体開口部1の下縁部に配されている。型成形部22は押出し部20と略同一の断面形状に形成されている。ここで、押出し部20の中空シール部を14aと、型成形部の中空シール部を14bとする。
【0015】
図4に示すように、型成形部22における中空シール部14b内には、中空シール部14の形状を保持するための保持部材24が配設されており、この保持部材24は、ドアを強く閉じる時のオーバーストロークによるドアとボディとの干渉を防止する効果を有する。この保持部材24は、スポンジゴムよりなる断面円形の管状部材であって、型成形部22からその両側の押出し部20端部にかけて、中空シール部14内に配設されている。
【0016】
このウエザストリップ10を製造する際には、まず、押出成形工程において、上記した断面形状を有する押出し部20を所定の長さにて形成する。そして、型成形工程に投入して、この押出し部20の両端部を型成形部22により接続する。その際、型成形部22の中空シール部14b内に保持部材24を配設させる。
【0017】
以下、この型成形工程について詳述する。
【0018】
図1に示すように、押出し部20の両端部を、所定の間隔をおいて互いに向き合せた状態で、成形型30内に配置させる。その際、型成形部22における中空シール部14bを形成するための中子32を、押出し部20の両端部に差込んだ状態で成形型30内に配置させる。なお、図において、符号21は押出し部20の両端部の接続面を示している。
【0019】
中子32は、図2(b)に示すように、細長い円柱状をなし、その一端に操作腕34を有する。この操作腕34を、押出し部20の一方の端部における中空シール部14a内からそこに設けられた中子抜き穴15を介して外側に露出させておく。
【0020】
本実施形態においては、この中子32に保持部材24を取付け、この取付けた状態で成形型30内に配置して、型成形部22を形成し、その後、中子32を抜き取ることにより、型成形部22内に保持部材24を配設させることを特徴とする。
【0021】
詳細には、図2(a)に示す細長い管状の保持部材24内に、中子32を嵌入し、この嵌入した状態で、その両端部を押出し部20端部の中空シール部14a,14a内に差し込んで、成形型30内に配置する。なお、保持部材24と中子32との長さ及び太さの関係は、車種の形状や要求性能により適宜に設定することができる。
【0022】
そして、このように押出し部20の両端部、中子32及び保持部材24を成形型30内にセットした状態で、型成形部22を形成するためのゴムを注入し、加硫する。加硫終了後、成形型30内からウエザストリップ10を取出すとともに、操作腕34を用いて中子32のみを中子抜き穴15から抜き取る。
【0023】
これにより、図3に示すように、保持部材24は、型成形部22を構成するゴムによって、中空シール部14b内に一体的に固定された状態で配設される。
【0024】
このように、保持部材24を、型成形時に、型成形部22からその両側の押出し部20端部にかけて中空シール部14内に設置することができるので、上記した従来の方法のように中空シール部を切り裂く必要がなく、よって、ウエザストリップの品質を確保することができ、また、製造工数的にも改善される。
【0025】
図6は、本発明の第2の実施形態に係るウエザストリップの製造方法により製造されたウエザストリップの要部斜視図である。
【0026】
この実施形態においては、型成形工程において、押出し部20を成形型30に設置する前にその一方の端部における中空シール部14a内に保持部材24を挿入しておき、この挿入した状態で型成形部22を形成し、中空シール部14bから中子32を抜き取った後に、押出し部20に挿入したおいた保持部材24を型成形部22における中空シール部14b内の所定の位置に移動させることを特徴とする。
【0027】
詳細には、図7(a)に示すように、押出し部20の一方の端部における中空シール部14a内の、成形型30内に配置される部分よりずれた位置に、予め保持部材24を挿入しておく。そして、押出し部20の両端部に中子32を差し込んだ状態で成形型30内にセットし、型成形部22を形成するためのゴムを注入し、加硫する。加硫終了後、成形型30内からウエザストリップ10を取出すとともに、操作腕34を用いて中子32を中子抜き穴15から抜き取る。その後、図7(b)に示すように、予め挿入しておいた保持部材24をエアー等で型成形部22に移動させ、接着剤等を用いて所定の位置に固定する。
【0028】
これにより、図6に示すように、保持部材24は、型成形部22からその両側の押出し部20端部にかけて中空シール部14内に設置される。このように、中空シール部14を切り裂くことなく、中空シール部14内に保持部材24を設置することができるので、ウエザストリップの品質を確保することができ、また、製造工数的にも改善される。
【0029】
また、この場合、図6に示すように、中子抜き穴15が保持部材24により塞がれるように、保持部材24の長さ及び中子抜き穴15の位置を調整しておくことが好ましい。すなわち、この実施形態においては、上記第1の実施形態の場合よりも、中子抜き穴15の位置を押出し部20の接続面21近傍に設定している。このように、移動させた保持部材24によって中子抜き穴15を塞ぐことにより、ウエザストリップ10の見栄えを向上させることができる。
【0030】
なお、以上の各実施形態においては、1本の押出し部20の両端部を接続する場合について説明したが、2本の押出し部の端部同士を接続する場合にも本発明は適用可能である。
【0031】
また、型成形部22は、車体開口部1の下縁のストレート部に限らず、コーナ部に設定してもよく、本発明においては、型成形部22を、車体開口部の下縁部やコーナ部に設定することが好ましい。
【0032】
【発明の効果】
本発明のウエザストリップの製造方法であると、中空シール部を切り裂くことなく、型成形部における中空シール部内に保持部材を配設することができるので、ウエザストリップの品質を確保することができ、また、製造工数的にも改善される。
【図面の簡単な説明】
【図1】本発明の第1の実施形態における型成形時のウエザストリップの要部斜視図である。
【図2】(a)は本実施形態における保持部材の斜視図、(b)は本実施形態における中子の斜視図である。
【図3】本実施形態の製造方法により製造されたウエザストリップの要部斜視図である。
【図4】本実施形態におけるウエザストリップの車体取付時の断面図である。
【図5】自動車のトランク部を示す斜視図である。
【図6】本発明の第2の実施形態の製造方法により製造されたウエザストリップの要部斜視図である。
【図7】第2の実施形態における型成形時のウエザストリップの平面概略図であって、(a)は成形型に配置した状態、(b)は加硫後に保持部材を移動させた状態をそれぞれ示している。
【図8】従来のウエザストリップの製造方法を示す要部斜視図である。
【符号の説明】
10……ウエザストリップ
14……中空シール部
14a…押出し部における中空シール部
14b…型成形部における中空シール部
20……押出し部
22……型成形部
24……保持部材
30……成形型
32……中子
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method of manufacturing a weather strip that is attached to a vehicle body opening edge or a door edge and seals the opening in a vehicle body opening such as a trunk portion or a passenger door portion of an automobile.
[0002]
[Prior art]
Some weather strips of an automobile include a mounting base attached to a vehicle body opening edge or a door edge and a hollow seal portion bulging from the mounting base. Conventionally, in such a weather strip, the ends of the extruded portions by extrusion molding are connected to each other by a mold forming portion formed by mold forming. At that time, the hollow seal portion in the mold forming portion is formed at the time of mold forming. It is formed by placing a core in the mold.
[0003]
In such a weather strip, the hollow sealing portion in the mold forming portion is kept in shape, that is, in order to keep the shape having an effect of preventing interference between the door and the body due to overstroke when the door is strongly closed. A holding member made of sponge rubber or the like may be disposed in the seal portion.
[0004]
Conventionally, when the holding member is disposed, as shown in FIG. 8, the hollow seal portion 102 is cut at the end of the extruded portion 101 after vulcanization molding of the molding portion 103 connecting the extruded portions 101, 101. The holding member 106 is inserted from the tear opening 105 and disposed in the hollow seal portion 104 of the mold forming section 103, and then the tear opening 105 is bonded.
[0005]
[Problems to be solved by the invention]
However, the conventional method has a problem that it takes time to cut the hollow seal portion 102 in order to insert the holding member 106 or to bond the hollow seal portion 102 after the insertion. Further, since the hollow seal portion 102 is bonded in this way, there is a problem that a step is generated on the bonding surface, or a hardness change due to the adhesive is generated, and the quality of the weather strip is deteriorated.
[0006]
Accordingly, the present invention provides a weather strip manufacturing method in which a holding member can be disposed in a mold forming portion without tearing the hollow seal portion after mold forming, thereby ensuring quality and improving manufacturing man-hours. The purpose is to provide.
[0007]
[Means for Solving the Problems]
The method for producing a weather strip according to claim 1 of the present invention is a weather strip having a hollow seal portion, and the ends of the extruded portions by extrusion molding are connected to each other by a mold forming portion by molding. In the method of manufacturing a weather strip, the hollow seal portion in the molded portion is formed by a core disposed in the mold during molding, and a holding member for maintaining the shape is disposed in the hollow seal portion in the mold molded portion. At the time of molding, the holding member is attached to the core, and the molded part is formed in this attached state, and then the core is extracted from the hollow seal part.
[0008]
In this way, the mold forming part is formed with the holding member attached to the core, the ends of the extruded parts are connected to each other, and then the core is pulled out so that the holding member is molded at the time of mold forming. In a state of being integrally fixed in the hollow seal portion of the portion. Therefore, since the holding member can be arranged in the mold forming part without tearing the hollow seal part after the mold forming, the quality of the weather strip can be ensured, and the manufacturing man-hour can be improved. .
[0009]
The weatherstrip manufacturing method according to claim 2 is a weatherstrip having a hollow seal part, and the ends of the extruded parts by extrusion molding are connected to each other by a molded part by mold molding. In a method of manufacturing a weather strip in which a hollow seal portion is formed by a core disposed in a mold during molding, and a holding member for maintaining the shape is disposed in the hollow seal portion in the mold molding portion, The holding member that has been inserted into the extruded portion after the holding member has been inserted into the hollow seal portion in the extruded portion, the mold forming portion is formed in this inserted state, and the core is removed from the hollow seal portion Is moved to the molding part.
[0010]
As described above, the holding member is inserted in advance into the hollow seal portion of the extruded portion, the mold forming portion is formed, the ends of the extruded portion are connected to each other, and the core is extracted, and then inserted. Since the holding member is moved to the mold forming portion, the holding member can be disposed in the mold forming portion without tearing the hollow seal portion after the molding. Therefore, the quality of the weather strip can be ensured, and the manufacturing man-hour can be improved. In addition, in this manufacturing method, by adjusting the position of the core punch hole provided in the hollow seal portion and the length of the holding member in order to extract the core, the holding member moved after the molding can be Since the core hole can be closed, the appearance of the weather strip can be improved.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0012]
FIG. 1 is a perspective view of an essential part of a weather strip at the time of mold forming in the method of manufacturing a weather strip according to the first embodiment of the present invention.
[0013]
The weather strip 10 in this embodiment seals the vehicle body opening 1 in the trunk portion of the automobile shown in FIG. 5, and has a substantially inverted U-shaped cross section attached to the body flange 2 as shown in FIG. The mounting base 12 includes a hollow seal portion 14 having a substantially circular cross section that bulges from the top of the mounting base 12 and contacts the edge of the door 3. Here, the mounting base portion 12 is made of solid rubber, and an insert metal 16 is embedded therein, while the hollow seal portion 14 is made of sponge rubber. Reference numeral 17 denotes a seal lip that protrudes from the lower end of the mounting base 12 and is in contact with the body surface. Reference numeral 18 denotes a holding lip that protrudes from the inner surface of the mounting base 12 to hold the body flange 2.
[0014]
The weather strip 10 is formed in a ring shape by connecting both end portions of one extruded portion 20 formed by extrusion molding by a mold forming portion 22 formed by molding, and the entire circumference of the vehicle body opening 1 is formed. It is integrally formed over. As shown in FIG. 5, the mold forming portion 22 is disposed on the lower edge portion of the vehicle body opening 1. The mold forming part 22 is formed in substantially the same cross-sectional shape as the extruded part 20. Here, the hollow seal part of the extrusion part 20 is 14a, and the hollow seal part of the mold forming part is 14b.
[0015]
As shown in FIG. 4, a holding member 24 for holding the shape of the hollow seal portion 14 is disposed in the hollow seal portion 14b of the mold forming portion 22, and the holding member 24 strongly strengthens the door. It has the effect of preventing interference between the door and the body due to overstroke when closing. The holding member 24 is a tubular member having a circular cross section made of sponge rubber, and is disposed in the hollow seal portion 14 from the molding portion 22 to the ends of the extrusion portions 20 on both sides thereof.
[0016]
When the weather strip 10 is manufactured, first, in the extrusion molding process, the extruded portion 20 having the above-described cross-sectional shape is formed with a predetermined length. Then, in the mold forming step, both ends of the extruded portion 20 are connected by the mold forming portion 22. At that time, the holding member 24 is disposed in the hollow seal portion 14 b of the mold forming portion 22.
[0017]
Hereinafter, this mold forming step will be described in detail.
[0018]
As shown in FIG. 1, both end portions of the extruded portion 20 are disposed in the mold 30 in a state where they face each other at a predetermined interval. At that time, the core 32 for forming the hollow seal portion 14 b in the mold forming portion 22 is placed in the mold 30 in a state where the core 32 is inserted into both ends of the extruded portion 20. In the figure, reference numeral 21 indicates connection surfaces at both ends of the extruded portion 20.
[0019]
As shown in FIG. 2B, the core 32 has an elongated cylindrical shape, and has an operation arm 34 at one end thereof. The operating arm 34 is exposed to the outside from the inside of the hollow seal portion 14a at one end portion of the pushing portion 20 through the core punching hole 15 provided therein.
[0020]
In the present embodiment, the holding member 24 is attached to the core 32, and is placed in the forming die 30 in the attached state to form the mold forming portion 22, and then the core 32 is pulled out, thereby A holding member 24 is disposed in the molding portion 22.
[0021]
Specifically, the core 32 is inserted into the elongated tubular holding member 24 shown in FIG. 2 (a), and in this inserted state, both ends thereof are inside the hollow seal portions 14a and 14a at the ends of the extruded portion 20. And placed in the mold 30. In addition, the relationship between the length and thickness of the holding member 24 and the core 32 can be appropriately set depending on the shape of the vehicle type and the required performance.
[0022]
Then, in a state where the both ends of the extruded portion 20, the core 32 and the holding member 24 are set in the molding die 30, rubber for forming the mold molding portion 22 is injected and vulcanized. After the vulcanization is completed, the weather strip 10 is removed from the mold 30 and only the core 32 is extracted from the core punching hole 15 using the operating arm 34.
[0023]
Thereby, as shown in FIG. 3, the holding member 24 is disposed in a state of being integrally fixed in the hollow seal portion 14 b by the rubber constituting the mold forming portion 22.
[0024]
Thus, since the holding member 24 can be installed in the hollow seal portion 14 from the mold forming portion 22 to the ends of the extrusion portions 20 on both sides of the holding portion 24 at the time of mold forming, the hollow seal as in the conventional method described above. Therefore, it is not necessary to cut the portion, so that the quality of the weather strip can be ensured, and the manufacturing man-hour can be improved.
[0025]
FIG. 6 is a perspective view of an essential part of a weather strip manufactured by the method of manufacturing a weather strip according to the second embodiment of the present invention.
[0026]
In this embodiment, in the mold forming step, the holding member 24 is inserted into the hollow seal portion 14a at one end of the extruded portion 20 before installing the extruded portion 20 in the mold 30, and the mold is inserted in this inserted state. After forming the molding part 22 and extracting the core 32 from the hollow seal part 14b, the holding member 24 inserted into the extrusion part 20 is moved to a predetermined position in the hollow seal part 14b in the mold molding part 22. It is characterized by.
[0027]
Specifically, as shown in FIG. 7A, the holding member 24 is preliminarily positioned at a position shifted from the portion disposed in the molding die 30 in the hollow seal portion 14 a at one end of the extruded portion 20. Insert it. And it sets in the shaping | molding die 30 in the state which inserted the core 32 in the both ends of the extrusion part 20, the rubber | gum for forming the shaping | molding part 22 is inject | poured, and vulcanized | cured. After the vulcanization is completed, the weather strip 10 is taken out from the mold 30 and the core 32 is taken out from the core punching hole 15 using the operation arm 34. Thereafter, as shown in FIG. 7B, the holding member 24 inserted in advance is moved to the molding part 22 by air or the like, and is fixed at a predetermined position using an adhesive or the like.
[0028]
Accordingly, as shown in FIG. 6, the holding member 24 is installed in the hollow seal portion 14 from the mold forming portion 22 to the ends of the extrusion portions 20 on both sides thereof. Thus, since the holding member 24 can be installed in the hollow seal portion 14 without tearing the hollow seal portion 14, the quality of the weather strip can be ensured, and the manufacturing man-hours can be improved. Is done.
[0029]
In this case, the length of the holding member 24 and the position of the core punching hole 15 are preferably adjusted so that the core punching hole 15 is closed by the holding member 24 as shown in FIG. . That is, in this embodiment, the position of the core punching hole 15 is set in the vicinity of the connection surface 21 of the pushing portion 20 as compared with the case of the first embodiment. Thus, the appearance of the weather strip 10 can be improved by closing the core punching hole 15 with the moved holding member 24.
[0030]
In addition, in each above embodiment, although the case where the both ends of one extrusion part 20 were connected was demonstrated, this invention is applicable also when connecting the edge parts of two extrusion parts. .
[0031]
Further, the mold forming portion 22 is not limited to the straight portion at the lower edge of the vehicle body opening 1, but may be set at a corner portion. In the present invention, the mold forming portion 22 is set at the lower edge portion of the vehicle body opening or the like. It is preferable to set the corner portion.
[0032]
【The invention's effect】
According to the weather strip manufacturing method of the present invention, since the holding member can be disposed in the hollow seal portion in the molded portion without tearing the hollow seal portion, the quality of the weather strip can be ensured. It can also be improved in terms of manufacturing man-hours.
[Brief description of the drawings]
FIG. 1 is a perspective view of an essential part of a weather strip at the time of molding in a first embodiment of the present invention.
2A is a perspective view of a holding member in the present embodiment, and FIG. 2B is a perspective view of a core in the present embodiment.
FIG. 3 is a perspective view of a main part of a weather strip manufactured by the manufacturing method of the present embodiment.
FIG. 4 is a cross-sectional view of the weather strip in the embodiment when the vehicle body is attached.
FIG. 5 is a perspective view showing a trunk portion of an automobile.
FIG. 6 is a perspective view of essential parts of a weather strip manufactured by the manufacturing method of the second embodiment of the present invention.
FIGS. 7A and 7B are schematic plan views of a weather strip at the time of mold forming according to the second embodiment, where FIG. 7A is a state where the weather strip is disposed in the mold, and FIG. 7B is a state where the holding member is moved after vulcanization. Respectively.
FIG. 8 is a perspective view showing a main part of a conventional weatherstrip manufacturing method.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Weather strip 14 ... Hollow seal part 14a ... Hollow seal part 14b in an extrusion part ... Hollow seal part 20 in a molding part 20 ... Extrusion part 22 ... Molding part 24 ... Holding member 30 ... Mold 32 …… Nakako

Claims (2)

中空シール部を備えるウエザストリップであって、押出成形による押出し部の端部同士が型成形による型成形部で接続され、この型成形部における中空シール部が型成形時に成形型に配した中子により形成され、この型成形部における中空シール部内に形状保持のための保持部材が配設されたウエザストリップの製造方法において、
型成形に際し、中子に前記保持部材を取付け、この取付けた状態で型成形部を形成し、その後、中空シール部から中子を抜き取ることを特徴とするウエザストリップの製造方法。
A weather strip having a hollow seal portion, wherein the ends of the extruded portions by extrusion molding are connected to each other by a mold forming portion by mold molding, and the hollow seal portion in this mold molded portion is disposed in the mold during mold molding In a method of manufacturing a weather strip formed by a child and having a holding member for maintaining a shape in a hollow seal portion in the mold forming portion,
A method of manufacturing a weather strip, wherein the holding member is attached to a core at the time of mold forming, a molded part is formed in this attached state, and then the core is removed from the hollow seal part.
中空シール部を備えるウエザストリップであって、押出成形による押出し部の端部同士が型成形による型成形部で接続され、この型成形部における中空シール部が型成形時に成形型に配した中子により形成され、この型成形部における中空シール部内に形状保持のための保持部材が配設されたウエザストリップの製造方法において、
型成形に際し、押出し部における中空シール部内に前記保持部材を挿入しておき、この挿入した状態で型成形部を形成し、中空シール部から中子を抜き取った後に、押出し部に挿入しておいた保持部材を型成形部に移動させることを特徴とするウエザストリップの製造方法。
A weather strip having a hollow seal portion, wherein the ends of the extruded portions by extrusion molding are connected to each other by a mold forming portion by mold molding, and the hollow seal portion in this mold molded portion is disposed in the mold during mold molding In a method of manufacturing a weather strip formed by a child and having a holding member for maintaining a shape in a hollow seal portion in the mold forming portion,
At the time of mold forming, the holding member is inserted into the hollow seal portion in the extruded portion, the mold formed portion is formed in this inserted state, the core is extracted from the hollow seal portion, and then inserted into the extruded portion. A method for producing a weather strip, characterized in that a holding member that has been moved is moved to a mold part.
JP12219597A 1997-05-13 1997-05-13 Weather strip manufacturing method Expired - Fee Related JP3740563B2 (en)

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