JPS6377720A - Forming method for side window weather strip - Google Patents
Forming method for side window weather stripInfo
- Publication number
- JPS6377720A JPS6377720A JP61221688A JP22168886A JPS6377720A JP S6377720 A JPS6377720 A JP S6377720A JP 61221688 A JP61221688 A JP 61221688A JP 22168886 A JP22168886 A JP 22168886A JP S6377720 A JPS6377720 A JP S6377720A
- Authority
- JP
- Japan
- Prior art keywords
- welt
- lip
- mold
- weather strip
- seal lip
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000010107 reaction injection moulding Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 abstract description 11
- 238000007789 sealing Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 238000001746 injection moulding Methods 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 2
- 229920002635 polyurethane Polymers 0.000 abstract 1
- 239000004814 polyurethane Substances 0.000 abstract 1
- 238000001125 extrusion Methods 0.000 description 2
- 238000004040 coloring Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
- B29C45/14409—Coating profiles or strips by injecting end or corner or intermediate parts
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、自動車のサイドウィンドウェザ−ストリップ
の成形方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for forming side window weather strips for automobiles.
従来の技術
例えば第４図および第５図１こ示すサイドウィンドウェ
ザ−ストリップ（以下、単にウェザ−ストリップという
）１は、芯金２を有する断面略Ｕ字状のウェルト部３の
側面にシールリップ４を突出形成したもので、一般的に
はウェルト部３がソリッドゴムで形成されるのに対して
シールリップ４はスポンジゴムにて形成されている。５
はサイドウィンドガラスである。BACKGROUND OF THE INVENTION A side window weather strip (hereinafter simply referred to as a weather strip) 1 shown in FIGS. 4 and 5, for example, has a seal lip on the side surface of a welt portion 3 having a substantially U-shaped cross section and having a core bar 2. Generally, the welt part 3 is made of solid rubber, whereas the seal lip 4 is made of sponge rubber. 5
is the side window glass.
そして、ウェザ−ストリップ１の一般部（ストレート部
）は押出し成形によって成形されるものの、例えばコー
ナ一部０については通常状のようにして成形される。Although the general portion (straight portion) of the weather strip 1 is formed by extrusion molding, for example, the corner portion 0 is formed in a conventional manner.
すなわち第６１閑に示すように、押出し成形によってス
トレート形状に成形されたウェザ−ストリップ１のシー
ルリップ４の一部６をカットし、次にウェザ−ストＩＪ
ツブ１を所定角度に屈曲させて図示外の金型にセットし
た上でゴム生地を注入する。その結果、第７図に示すよ
うにカット部６に対応するところのシールリップ４のコ
ーナ一部４０が別成形されることになる。That is, as shown in No. 61, a part 6 of the seal lip 4 of the weather strip 1 formed into a straight shape by extrusion molding is cut, and then the weather strip IJ is cut.
The tube 1 is bent at a predetermined angle and set in a mold (not shown), and then rubber dough is injected into the tube. As a result, as shown in FIG. 7, a corner portion 40 of the seal lip 4 corresponding to the cut portion 6 is formed separately.
また上記の成形方法に代わるものとして、第８図に示す
ように図示外のコーナ一部成形用の金型内に一対のウェ
ザ−ストリップＩＡ、ＩＢの一端をそれぞれに所要のコ
ーナ一部角度を保ちつつ挿入し、ゴム生地を注入するこ
とでウェルト部３とシールリップ４のコーナー’Ｊ３
ｃ 、 ４０ ヲＦ７１時に成形することもある。この
場合にはウェルト部３のコーナ一部３Ｃについても金型
にて別成形されるため、ウェルト部３のコーナー＋１３
０１こつぃては内部に芯金２が存在しないことになる。In addition, as an alternative to the above molding method, as shown in FIG. 8, one end of a pair of weather strips IA and IB is placed in a mold for molding a part of a corner (not shown) to form a desired corner angle. The corner 'J3 of the welt part 3 and seal lip 4 is
It may be molded at 40 degrees F71. In this case, since the corner part 3C of the welt part 3 is also separately molded with a mold, the corner +13 of the welt part 3
01 means that there is no core metal 2 inside.
発明が解決しようとする間頭点
上記のような成形法においては、いずれもシールリップ
４の一般部とコーナ一部４Ｃとが接合部７１こおいて加
硫接着されることになるが、この接合部７に段差が生じ
易く、これによって外観品質の低下やシール性不良を招
くことがある。The main point to be solved by the invention In all of the above-mentioned molding methods, the general part of the seal lip 4 and the corner part 4C are vulcanized and bonded at the joint part 71. Steps are likely to occur in the joint portion 7, which may lead to deterioration in appearance quality and poor sealing performance.
問題点を解決するための手段
本発明はシールリップのシール面に接合部が発生しない
成形法を提供するものであり、実施例にも示すように、
予め枠状に形成されたウェルト部をインサートとして金
型にセツトシて型締めし、金型の製品部空間ζこ所定の
シールリップ材料を充填することで反応射出成形法によ
りウェルト部と一体にシールリップを成形するようにし
たものである。Means for Solving the Problems The present invention provides a molding method that does not generate joints on the sealing surface of the sealing lip, and as shown in Examples,
The welt part, which has been formed in a frame shape in advance, is set in the mold as an insert and clamped, and the product space of the mold is filled with a predetermined sealing lip material, which seals the welt part integrally with the welt part by reaction injection molding. The lip is molded.
実施例
第１図〜第３図は本発明の一実施例を示す図であり、第
２図および第３図（こ示すように押出し成形されたウェ
ルト部３の両端を突き合わせて、ウェルト部３のみを予
め窓枠状に形成しておく。そして、ウェルト部３をその
一側面が上になるように第１図の金型８の下型８ａにセ
ットし、下型８と上型８ｂ、３ｃとを型締めする、この
とき、十Ｍｌ１３ ｂ 、 Ｒｃ側にシールリップ４の
ための製品部空間Ｒが確保される。Embodiment FIGS. 1 to 3 are views showing one embodiment of the present invention, and FIGS. 2 and 3 (as shown in FIG. Then, the welt part 3 is set in the lower mold 8a of the mold 8 shown in FIG. 1 with one side facing upward, and the lower mold 8, the upper mold 8b, At this time, a product space R for the seal lip 4 is secured on the Rc side.
続いて、図示外のゲート部から製品部空間Ｒに対してポ
リ１ｊルタン系の二液タイプのシールリップ材料を充填
し、反応射出成形法（Ｒ工Ｍ成形法）によりウェルト部
３と一体にシールリップ４を成形する。Subsequently, a two-component type seal lip material made of poly-1J ruthane is filled into the product part space R from a gate part (not shown), and integrated with the welt part 3 by a reaction injection molding method (R-M molding method). The seal lip 4 is molded.
このような成形法による古、ウェルト部３とシールリッ
プ４とが該シールリップ４の基部で接合されるため、シ
ールリップ４のシール面に段差等が生じない。また、ウ
ェルト部３に対してシールリップ４全体が別成形される
ため、ウェルト部３とシールリップ４とで相互に色採を
変えることも可能となる。By using such a molding method, the welt portion 3 and the seal lip 4 are joined at the base of the seal lip 4, so that no step or the like occurs on the sealing surface of the seal lip 4. Further, since the entire seal lip 4 is molded separately from the welt part 3, it is also possible to change the coloring of the welt part 3 and the seal lip 4.
発明び）効果
本発明によれば、ウェルトＨＩＤこ対してシールリップ
をＲｊＭ成形するようにしたことにより、シールリップ
に接合部が生ずることがなく、外観品質１）よびシール
性能ともに向上する。また、従来と比べてばつが発生が
少なく、しかもＲ工Ｍ成形の特性としてサイクルタイム
が短くて済むため、成形性が大幅に向上する。Invention and) Effects According to the present invention, by RjM molding the seal lip against the welt HID, no joint is formed in the seal lip, and both the appearance quality 1) and the sealing performance are improved. Furthermore, compared to the conventional method, there is less occurrence of fraying, and as a characteristic of R-M molding, the cycle time can be shortened, so moldability is greatly improved.
第１図は本発明を示す金型の断面図、第２図はウェルト
部の説明図、第３図は第２図のトｌ線に沿う断面図、第
４図は自動車の側面図、第５図は第４図の■−■線に沿
う断面図、第６図および第７図は従来のウェザ−ストリ
ップ成形法の説明図、第８図は同じ〈従来のウェザ−ス
トリップ成形法の他の例を示す説明図である。
１・・・サイドウィンドウェザ−ストリップ、３・・・
ウェルト部、４・・・シールリップ、８・・・金型％８
１Ｌ１−−−−一ナドウィンドウ二サ−にトンッフ゛８
ａ−−−−−下型一
１１４′
「
□ ト４
第４図
第５図
第６図
第７図Fig. 1 is a sectional view of a mold showing the present invention, Fig. 2 is an explanatory view of the welt part, Fig. 3 is a sectional view taken along the line T in Fig. 2, and Fig. 4 is a side view of the automobile. Figure 5 is a sectional view taken along the line ■-■ in Figure 4, Figures 6 and 7 are explanatory diagrams of the conventional weatherstrip molding method, and Figure 8 is the same (other than the conventional weatherstrip molding method). It is an explanatory view showing an example. 1...Side window weather strip, 3...
Welt part, 4... Seal lip, 8... Mold %8
1L1 ----Tonf to the first window second server
a----Lower mold 114' □ 4 Figure 4 Figure 5 Figure 6 Figure 7
Claims (1)
を一体に突出形成してなるサイドウインドウェザースト
リップの成形方法において、予め枠状に形成されたウェ
ルト部を金型にセットして型締めし、金型の製品部空間
に所定のシールリップ材料を充填することで反応射出成
形法によりウェルト部と一体にシールリップを成形する
ことを特徴とするサイドウインドウェザーストリップの
成形方法。(1) In a method for forming a side window weather strip in which a seal lip is integrally formed protruding from the side surface of a welt part having a substantially U-shaped cross section, a welt part formed in a frame shape is set in a mold in advance, and then molded. A method for forming a side window weather strip, which is characterized in that a seal lip is molded integrally with a welt part by a reaction injection molding method by tightening the welt part and filling a predetermined seal lip material into the product part space of a mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61221688A JPS6377720A (en) | 1986-09-19 | 1986-09-19 | Forming method for side window weather strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61221688A JPS6377720A (en) | 1986-09-19 | 1986-09-19 | Forming method for side window weather strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6377720A true JPS6377720A (en) | 1988-04-07 |
Family
ID=16770720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61221688A Pending JPS6377720A (en) | 1986-09-19 | 1986-09-19 | Forming method for side window weather strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6377720A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0369325A (en) * | 1989-08-09 | 1991-03-25 | Toyoda Gosei Co Ltd | Manufacture of weather strip for automobile |
| US5385703A (en) * | 1992-11-23 | 1995-01-31 | Silvatrim Associates | Forming extruded molding trim for vehicles and appliances |
| KR20200094426A (en) * | 2019-01-30 | 2020-08-07 | 평화오일씰공업주식회사 | Mold for forming sealing device |
-
1986
- 1986-09-19 JP JP61221688A patent/JPS6377720A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0369325A (en) * | 1989-08-09 | 1991-03-25 | Toyoda Gosei Co Ltd | Manufacture of weather strip for automobile |
| US5385703A (en) * | 1992-11-23 | 1995-01-31 | Silvatrim Associates | Forming extruded molding trim for vehicles and appliances |
| KR20200094426A (en) * | 2019-01-30 | 2020-08-07 | 평화오일씰공업주식회사 | Mold for forming sealing device |
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