JPH0511732B2 - - Google Patents
Info
- Publication number
- JPH0511732B2 JPH0511732B2 JP62125377A JP12537787A JPH0511732B2 JP H0511732 B2 JPH0511732 B2 JP H0511732B2 JP 62125377 A JP62125377 A JP 62125377A JP 12537787 A JP12537787 A JP 12537787A JP H0511732 B2 JPH0511732 B2 JP H0511732B2
- Authority
- JP
- Japan
- Prior art keywords
- weather strip
- seal
- corner
- trim
- mold
- 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 - Fee Related
Links
- 238000000465 moulding Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims 1
- 238000001125 extrusion Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Vehicle Waterproofing, Decoration, And Sanitation Devices (AREA)
- Seal Device For Vehicle (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は自動車用ウエザストリツプのコーナ部
分を型成形する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for molding corner portions of automotive weather strips.
［従来技術］
自動車ボデーの開口にはこれに沿つてドア等の
開閉部材との間をシールするウエザストリツプが
装着される。[Prior Art] A weather strip is installed along an opening in an automobile body to seal the opening and closing member such as a door.
第１図は自動車ボテーのドア開口に沿つて取付
けられたウエザストリツプを示すもので、ウエザ
ストリツプ１は第２図に示すように開口に形成し
たフランジ２に保持せしめる断面Ｕ字形のトリム
部１１と、トリム部１１の側面に形成され、ドア
の外周と接する中空状等のシール部１２を備えた
押出成形品である。 Fig. 1 shows a weather strip installed along the door opening of an automobile body.As shown in Fig. 2, the weather strip 1 consists of a trim part 11 with a U-shaped cross section held by a flange 2 formed in the opening, and a trim part 11 that is held by a flange 2 formed in the opening. It is an extrusion molded product including a hollow sealing part 12 formed on the side surface of a part 11 and in contact with the outer periphery of the door.
ところで、このウエザストリツプ１をドア開口
のコーナ部分Ａ（第１図）に沿つて屈曲せしめる
と、シール部１２が不規則に変形してシール性が
低下する。そこでコーナ部分Ａのみは一般に型成
形で成形されている。 By the way, if this weather strip 1 is bent along the corner portion A of the door opening (FIG. 1), the seal portion 12 will deform irregularly and the sealing performance will deteriorate. Therefore, only the corner portion A is generally formed by molding.
第５図および第６図は型成形の代表例を示すも
ので、押出成形されたウエザストリツプ１のうち
シール部１２のコーナ部分を第５図のように切除
し、トリム部１１を所定形状に屈曲させて第６図
に示すように複数の分割型よりなる金型３にセツ
トし、シール部１２の切除された部分にシール部
形成材料をスプル４１から供給してシール部の型
成形コーナ部分１２ａを形成している。 Figures 5 and 6 show typical examples of molding, in which the corner portion of the seal portion 12 of the extruded weather strip 1 is cut off as shown in Figure 5, and the trim portion 11 is bent into a predetermined shape. Then, as shown in FIG. 6, it is set in a mold 3 consisting of a plurality of split molds, and a seal forming material is supplied from the sprue 41 to the cut out part of the seal part 12 to form a corner part 12a of the seal part. is formed.
［本発明が解決しようとする問題点］
ところで上記型成形を行なう場合、第６図に示
すように型開き時のアンダーカツトを避ける都合
上、分割線４２をシール部の型成形コーナ部分１
２ａの中央に位置せしめている。このため、該部
分１２ａの表面にはバリ５が発生する。バリ５は
ウエザストリツプ装着時、外観に現れるため見栄
を損ねる。従つて著しい場合にはバリ５を切除す
る作業を必要とするが、手作業でも完全にバリ５
を除去することは難しく、また時間がかかる。[Problems to be Solved by the Present Invention] When performing the above-mentioned molding, as shown in FIG. 6, in order to avoid undercuts when opening the mold, the parting line 42 is placed at the molding corner portion 1 of the sealing part.
It is located at the center of 2a. Therefore, burrs 5 are generated on the surface of the portion 12a. The burr 5 appears on the exterior when the weather strip is installed, spoiling the appearance. Therefore, in severe cases, it is necessary to remove the burr 5, but it is possible to completely remove the burr 5 by hand.
Removal is difficult and time consuming.
そこで本発明は、コーナ部分の外観にバリの現
れないウエザストリツプを製造する方法を提供
し、もつて従来の問題点を解決することを目的と
するものである。 SUMMARY OF THE INVENTION An object of the present invention is to provide a method for manufacturing a weather strip in which burrs do not appear on the exterior of the corner portion, thereby solving the problems of the prior art.
［問題点を解決するための手段］
本発明は第３図および第４図に示すように、押
出成形ウエザストリツプ１のシール部１２のコー
ナ部分を切除するに際し、外観に現れる部位にお
いてトリム部１１から金型４へのセツト時に分割
線４２を越える位置に至るまでの部分１２０を残
して他の部分を切除し、金型４にセツトして上記
他の部分を型成形することを特徴とする。[Means for Solving the Problems] As shown in FIGS. 3 and 4, the present invention, when cutting off the corner portion of the seal portion 12 of the extrusion-molded weather strip 1, removes the material from the trim portion 11 at the portion that appears externally. It is characterized in that when it is set in the mold 4, a portion 120 up to a position beyond the parting line 42 is left and the other portions are cut out, and the other portion is then set in the mold 4 and the other portions are molded.
［作用効果］
しかして本発明によれば、ウエザストリツプの
コーナ部分ではシール部１２は金型の分割線位置
で型成形されないから、外観に現れる部分にバリ
はない。従つてコーナ部分の見栄がよく、またバ
リ除去を必要としない。[Operation and Effect] According to the present invention, since the seal portion 12 is not molded at the parting line of the mold at the corner portion of the weather strip, there is no visible burr. Therefore, the corner portions have a good appearance and do not require deburring.
［実施例］
第３図および第４図に示す実施例において、ウ
エザストリツプ１は押出成形品で、ソリツドゴム
よりなる断面Ｕ字形のトリム部１１と、スポンジ
ゴムよりなる中空状のシール部１２を備えてい
る。トリム部１１には屈曲変形可能な芯金１３が
埋設されている。[Embodiment] In the embodiment shown in FIGS. 3 and 4, the weather strip 1 is an extrusion molded product, and includes a trim part 11 made of solid rubber and having a U-shaped cross section, and a hollow seal part 12 made of sponge rubber. There is. A core metal 13 that can be bent and deformed is embedded in the trim part 11.
コーナ部分を成形するに際しては先ず、ウエザ
ストリツプを車体の開口に取付けたときに車外に
面して外観に現れる部分のトリム側の一部１２０
を残してシール部１２のコーナ部分を切除する。
そしてトリム部１１をシール部切除個所で屈曲さ
せ金型４にセツトする。切除されずに残されたト
リム側の一部１２０の高さは、金型４へのセツト
時に分割線４２を若干越えてこれよりも高くなる
幅としてある。 When forming the corner part, first, the part 120 on the trim side of the part that appears when the weather strip is attached to the opening of the vehicle body and facing outside the vehicle.
The corner portion of the seal portion 12 is cut off leaving .
Then, the trim part 11 is bent at the part where the seal part is removed and set in the mold 4. The height of the portion 120 on the trim side that is left uncut is set to be slightly higher than the parting line 42 when set in the mold 4.
金型４のスプル４１よりスポンジゴムをシール
部成形キヤビテイへ注入する。冷却後、型開きし
て第３図に示すコーナ部分が形成される。 Sponge rubber is injected into the seal molding cavity from the sprue 41 of the mold 4. After cooling, the mold is opened to form the corner portion shown in FIG. 3.
本発明のウエザストリツプは、コーナ部分にお
いて外観に出る部分には従来のウエザストリツプ
におけるが如きバリがなく見栄が良好である。 The weather strip of the present invention has a good appearance without any burrs like in conventional weather strips at the corner portions which are exposed to the outside.
第１図はウエザストリツプを備えた自動車のド
ア開口部の斜視図、第２図は第１図の−線に
沿う断面図、第３図および第４図は本発明の実施
例を示すもので、第３図はウエザストリツプのコ
ーナ部分の斜視図、第４図は第３図の−線に
沿う型成形時の断面図、第５図は従来のウエザス
トリツプのコーナ部分の斜視図、第６図は第５図
の−線に沿う型成形時の断面図である。
１……ウエザストリツプ、Ａ……コーナ部分、
１１……トリム部、１２……シール部、４……金
型、４２……分割線、５……バリ。
FIG. 1 is a perspective view of an automobile door opening equipped with a weather strip, FIG. 2 is a sectional view taken along the line - in FIG. 1, and FIGS. 3 and 4 show embodiments of the present invention. Fig. 3 is a perspective view of a corner portion of a weather strip, Fig. 4 is a sectional view taken along the - line in Fig. 3 during mold forming, Fig. 5 is a perspective view of a corner portion of a conventional weather strip, and Fig. 6 is a perspective view of a corner portion of a conventional weather strip. FIG. 5 is a cross-sectional view taken along the - line in FIG. 5 during molding. 1...Weather strip, A...Corner part,
11...Trim part, 12...Seal part, 4...Mold, 42...Parting line, 5...Burr.
Claims (1)
持されるトリム部と、トリム部の側面に形成し上
記開口を開閉する部材の外周と接してシール作用
をなすシール部を備えた押出成形のウエザストリ
ツプのコーナ部分を形成形するに際し、ウエザス
トリツプのコーナ部分におけるシール部を、外観
に現れる部位でトリム部から成形用金型の分割線
を越える部分を残して切除し、トリム部をシール
部切除個所で所定の形状に屈曲させて金型にセツ
トし、シール部の切除された部分にシール部形成
材料を注入して成形することを特徴とする自動車
用ウエザストリツプのコーナ成形方法。1. An extrusion-molded weather strip comprising a trim part having a U-shaped cross section and held along an opening in an automobile body, and a sealing part formed on the side surface of the trim part to perform a sealing action by contacting the outer periphery of a member that opens and closes the opening. When forming the corner part of the weather strip, the seal part at the corner part of the weather strip is removed from the trim part at the part where it appears externally, leaving the part that crosses the parting line of the molding die, and the trim part is removed at the part where the seal part is removed. A method for forming a corner of a weather strip for an automobile, which comprises bending it into a predetermined shape, setting it in a mold, and injecting a seal forming material into the cut-off portion of the seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62125377A JPS63290714A (en) | 1987-05-22 | 1987-05-22 | Corner molding method for weather strip for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62125377A JPS63290714A (en) | 1987-05-22 | 1987-05-22 | Corner molding method for weather strip for automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63290714A JPS63290714A (en) | 1988-11-28 |
| JPH0511732B2 true JPH0511732B2 (en) | 1993-02-16 |
Family
ID=14908626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62125377A Granted JPS63290714A (en) | 1987-05-22 | 1987-05-22 | Corner molding method for weather strip for automobile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63290714A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0326646U (en) * | 1989-07-26 | 1991-03-18 | ||
| JPH0813622B2 (en) * | 1990-04-12 | 1996-02-14 | 豊田合成株式会社 | Molding and connecting method for weather strip |
| DE4123256C1 (en) * | 1991-07-13 | 1992-10-08 | Saint Gobain Vitrage | |
| KR102215142B1 (en) * | 2019-01-30 | 2021-02-10 | 평화오일씰공업 주식회사 | Mold for forming sealing device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58163636A (en) * | 1982-03-24 | 1983-09-28 | Kinugawa Rubber Ind Co Ltd | Manufacture of weatherstrip for use with automobile |
-
1987
- 1987-05-22 JP JP62125377A patent/JPS63290714A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58163636A (en) * | 1982-03-24 | 1983-09-28 | Kinugawa Rubber Ind Co Ltd | Manufacture of weatherstrip for use with automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63290714A (en) | 1988-11-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |