JP3005930B2 - Method of manufacturing weather strip - Google Patents
Method of manufacturing weather stripInfo
- Publication number
- JP3005930B2 JP3005930B2 JP5269190A JP26919093A JP3005930B2 JP 3005930 B2 JP3005930 B2 JP 3005930B2 JP 5269190 A JP5269190 A JP 5269190A JP 26919093 A JP26919093 A JP 26919093A JP 3005930 B2 JP3005930 B2 JP 3005930B2
- Authority
- JP
- Japan
- Prior art keywords
- extruded
- weather strip
- design surface
- molding
- manufacturing
- 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
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)
- Seal Device For Vehicle (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Vehicle Waterproofing, Decoration, And Sanitation Devices (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、押出成形部と型成形部
とが一体接続されてなるウェザストリップの製造方法に
関する。ここで、ウェザストリップとは、ウィンドウェ
ザストリップ(窓枠ゴム)、ガラスラン、ドアウェザス
トリップ等を含む概念である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a weather strip in which an extruded part and a molded part are integrally connected. Here, the weather strip is a concept including a window weather strip (window frame rubber), a glass run, a door weather strip, and the like.
【0002】[0002]
【従来の技術】ここでは、窓枠ゴムのコーナ部を成形す
る場合を中心にして説明をするが、他のタイプのウェザ
ストリップでも同様であり、また、ウェザストリップを
端末成形するる場合も同様である。2. Description of the Related Art Here, a case where a corner portion of a window frame rubber is formed will be mainly described. However, the same applies to other types of weather strips. It is.
【0003】窓枠ゴムは、生産性、装着性、意匠性、等
の見地から、ストレート部を押出成形部とし、コーナ部
を型成形部として製造する。通常は、図1に示すよう
に、所定長に裁断して得た押出成形部1、1を成形用金
型11にセット後、該セットにより形成されるキャビテ
ィ13に成形材料を注入・硬化(加硫)させて、型成形
部3を押出成形部1に一体接続する方法で製造する。こ
こで、成形材料としては、通常、エチレンプロピレンゴ
ム、NBR/PVCポリブレンド、クロロプレンゴム等
が好適に使用される。また、成形方法は、トランスファ
または射出による。[0003] Window frame rubber is manufactured from the viewpoints of productivity, wearability, design, etc., with the straight part as an extruded part and the corner part as a molded part. Normally, as shown in FIG. 1, after the extruded portions 1 and 1 obtained by cutting into a predetermined length are set in a molding die 11, a molding material is injected into a cavity 13 formed by the set and cured ( Vulcanization), and is manufactured by a method of integrally connecting the molded part 3 to the extruded part 1. Here, as the molding material, usually, ethylene propylene rubber, NBR / PVC polyblend, chloroprene rubber or the like is suitably used. The molding method is transfer or injection.
【0004】[0004]
【発明が解決しようとする課題】上記型成形部3の成形
に際して、型成形部側から注入材料が押出成形部1側に
流入してバリ(後仕上げ工程が面倒である。)が発生し
ないように、押出成形部1、1を金型11にセットした
場合、押出成形部の断面寸法バラツキを考慮して押出成
形部1が、締まり嵌め状態(マイナス公差、通常h=
0.2〜0.4mm)になるように、金型11のキャビテ
ィ13の横断面の大きさが設定されている。In molding the above-mentioned molding part 3, the injection material does not flow into the extrusion molding part 1 side from the molding part side so that burrs (post-finishing process is troublesome) are not generated. In the case where the extruded portions 1 and 1 are set in the mold 11, the extruded portion 1 is tightly fitted (minus tolerance, usually h =
The cross-sectional size of the cavity 13 of the mold 11 is set so as to be 0.2 to 0.4 mm).
【0005】このため、成形完了後、離型時、押出成形
部に断面方向の弾性戻りが、一般的に発生する。このた
め、型成形部1と押出成形部3との境界部に段差が発生
し易い。また、押出成形部の断面寸法バラツキによって
も段差が発生する。これらの段差の発生は、意匠面部位
Dに発生した場合、意匠性を害して望ましくない。For this reason, after the molding is completed, when the mold is released, elastic return in the cross-sectional direction generally occurs in the extruded portion. Therefore, a step is likely to occur at the boundary between the molded part 1 and the extruded part 3. Also, a step occurs due to variations in the cross-sectional dimensions of the extruded part. When these steps occur in the design surface portion D, they degrade the design properties and are not desirable.
【0006】本発明は、上記にかんがみて、ウェザスト
リップの押出成形部と型成形部との意匠面部位における
境界部に目立つ段差が発生しないウェザストリップを提
供することを目的とする。SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a weather strip which does not have a noticeable step at a boundary between a design portion and an extruded portion of a weather strip.
【0007】[0007]
【課題を解決するための手段】本発明のウェザストリッ
プの製造方法は、上記課題を下記構成により解決するも
のである。The method of manufacturing a weather strip according to the present invention solves the above-mentioned problems by the following constitution.
【0008】押出成形部と型成形部とが一体接続されて
なるウェザストリップの製造に際して、押出成形品を所
定長に裁断して得た押出成形部を成形用金型にセット
後、該セットにより形成されるキャビティに成形材料を
注入・硬化させて、型成形部を押出成形部に一体接続す
る方法において、押出成形部を、その接続端面が非意匠
面部位側から意匠面部位側に向かって長くなるように裁
断して、成形用金型にセットすることを特徴とする。In manufacturing a weather strip in which an extruded part and a molded part are integrally connected, an extruded part obtained by cutting an extruded product into a predetermined length is set in a molding die, and then the set is performed. In a method of injecting and curing a molding material into a cavity to be formed, and integrally connecting the molded part to the extruded part, the extruded part is formed by connecting the extruded part from the non-design surface part side to the design surface part side. It is characterized by being cut so as to be long and set in a molding die.
【0009】[0009]
【実施例】以下、本発明を実施例に基づいて詳細に説明
をする(図2〜3参照)。前述例と同一部分について
は、同一図符号を付すと共に、それらの説明の全部また
は一部を省略する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to embodiments (see FIGS. 2 and 3). The same parts as those in the above-described example are denoted by the same reference numerals, and all or part of the description thereof is omitted.
【0010】前述例と同様、所定長に裁断して得た押出
成形部1を成形用金型11にセット後、該セットにより
形成されるキャビティ13に成形材料を注入硬化させ
て、型成形部3を押出成形部1に一体接続する方法で窓
枠ゴム(ウェザストリップ)を製造する。In the same manner as in the above example, the extruded part 1 obtained by cutting to a predetermined length is set in a molding die 11, and a molding material is injected and cured into a cavity 13 formed by the set. The window frame rubber (weather strip) is manufactured by a method of integrally connecting 3 to the extruded portion 1.
【0011】本実施例では、上記製造方法において、押
出成形部1を、その接続端面2Aが非意匠面部位側から
意匠面D側が長くなるように裁断して、成形用金型11
にセットする。このとき裁断の態様は、スロープ状等で
あってもよいが、通常、直線状の斜め裁断とする。その
裁断角度は、注入圧(通常、トランスファで980〜1
372Pa(100〜140kg/cm2))、成形材料の流
動性、意匠面部位での肉厚等により異なるが、通常、
軸線との交差角度α=40〜70°とする。この角度が
大き過ぎると、本発明の効果を奏し難く、小さ過ぎる
と、型成形部3の材料注入量が増大して、生産性に悪影
響を与える。In this embodiment, in the above-described manufacturing method, the extruded portion 1 is cut so that the connecting end surface 2A is longer on the design surface D side from the non-design surface portion side, and the molding die 11 is formed.
Set to. At this time, the mode of the cutting may be a slope shape or the like, but is usually a straight oblique cutting. The cutting angle depends on the injection pressure (usually 980 to 1 for transfer).
372 Pa (100 to 140 kg / cm 2 )), which varies depending on the fluidity of the molding material, the wall thickness at the design surface, and the like.
The intersection angle α with the axis is 40 to 70 °. If the angle is too large, the effect of the present invention is hardly achieved.
【0012】このときの、押出成形部1の金型キャビテ
ィ13に対する締まり嵌めのマイナス公差は、従来と同
様である。At this time, the minus tolerance of the interference fit of the extruded portion 1 with respect to the mold cavity 13 is the same as the conventional one.
【0013】上記押出成形部1を成形用金型11にセッ
トして、形成されるキャビティ11に成形材料を注入し
た場合、締まり嵌めであるため、前述例と同様、成形材
料が押出成形部1側へ流出してバリが発生するようなこ
とはない。When the extruded portion 1 is set in the molding die 11 and the molding material is injected into the cavity 11 to be formed, the molding material is tightly fitted. No burrs will flow out to the side.
【0014】また、材料硬化(加硫)後、型開きした場
合、押出成形部1の弾性戻りは、従来と同様に発生す
る。このとき、押出成形部1の接続端面2Aが、非意匠
面部位側から意匠面部位D側に長くなるように裁断して
あるため、意匠面部位D側に向かって押出成形部1の肉
厚が漸減している。このため、その意匠面部位D側にお
ける、弾性戻りは、非意匠面部位側に比して小さい。即
ち、目立つ段差は非意匠面部位側にのみ発生する。従っ
て、ウェザストリップの意匠面部位Dに目立つ段差は発
生しない。When the mold is opened after the material has been cured (vulcanized), the elastic return of the extruded portion 1 occurs as in the prior art. At this time, since the connection end surface 2A of the extruded portion 1 is cut so as to be longer from the non-designed surface portion side to the designed surface portion D side, the thickness of the extruded portion 1 toward the design surface portion D side is increased. Is gradually decreasing. Therefore, the elastic return on the design surface portion D side is smaller than that on the non-design surface portion side. That is, a noticeable step occurs only on the non-design surface portion side. Therefore, there is no noticeable step in the design surface portion D of the weather strip.
【0015】本発明のの製造方法は、図4に示すような
断面の押出成形部1Aを有するガラスラン、図5に示す
ような断面の押出成形部1Bを有するドアウェザストリ
ップにも、同様にして、押出成形部1A、1Bを、その
接続端面が非意匠面部位側から意匠面部位D側に向かっ
て長くなるように裁断して、成形用金型にセットするこ
とにより適用可能である。The manufacturing method of the present invention is similarly applied to a glass run having an extruded portion 1A having a cross section as shown in FIG. 4 and a door weather strip having an extruded portion 1B having a cross section as shown in FIG. The extruded portions 1A and 1B can be applied by cutting them so that their connection end faces become longer from the non-design surface portion side toward the design surface portion D side, and set them in a molding die.
【0016】[0016]
【発明の作用・効果】本発明のウェザストリップの製造
方法は、上記の如く、押出成形品を所定長に裁断して得
た押出成形部を成形用金型にセット後、該セットにより
形成されるキャビティに成形材料を注入・硬化させて、
型成形部を前記押出成形部に一体接続する方法におい
て、押出成形部を、その接続端面が非意匠面部位側から
意匠面部位D側に向かって長くなるように裁断して、成
形用金型にセットすることを特徴とするので、下記のよ
うな作用・効果を奏する。According to the method for producing a weather strip of the present invention, as described above, an extruded part obtained by cutting an extruded product into a predetermined length is set in a molding die and then formed by the set. Inject molding material into the cavity
In the method of integrally connecting the molded part to the extruded part, the extruded part is cut so that the connection end face becomes longer from the non-design surface part side to the design surface part D side, and a molding die. Therefore, the following operations and effects can be obtained.
【0017】押出成形部を成形用金型にセットして、形
成されたキャビティに成形材料を注入して、成形後、型
開きした場合、押出成形部の弾性戻りは、従来と同様に
発生するが、意匠面部位側ではその戻り量は、小さく、
目立つ段差は発生しない。When the extruded part is set in a molding die, a molding material is injected into the formed cavity, and after molding, the mold is opened, the elastic return of the extruded part occurs as in the conventional case. However, on the design surface side, the return amount is small,
No noticeable step occurs.
【0018】その理由は、押出成形部1の接続端面2A
が、非意匠面部位側から意匠面部位D側に長くなるよう
に裁断してあるため、意匠面部位D側に向かって押出成
形部1の肉厚が漸減している、その意匠面部位D側にお
ける、弾性戻りは、非意匠面部位側に比して小さい。The reason is that the connection end face 2A of the extruded part 1
However, since the length of the extruded portion 1 is gradually reduced toward the design surface portion D because the cut portion is cut so as to become longer from the non-design surface portion side to the design surface portion D side, the design surface portion D The elastic return on the side is smaller than that on the non-design surface part side.
【0019】従って、押出成形部と型成形部との接続段
差の目立たない意匠性の良好なウェザストリップが提供
可能となる。Therefore, it is possible to provide a weather strip having a good design without a noticeable connection step between the extruded part and the molded part.
【0020】さらに、押出成形部と型成形部とが、斜め
切断面を接続端面とするため、テーパ接着となり、接着
強度も増大するという付随的効果も奏する。Furthermore, since the extruded part and the molded part are formed with the diagonally cut surface as the connection end face, tapered bonding is achieved, and the additional effect of increasing the bonding strength is also exhibited.
【0021】なお、本発明の発明性には何ら影響を与え
ないが、本発明のウェザストリップの製造方法と、同様
の目的を達成する関連先行技術として、特開平3−87
226号公報等が存在する。Although the invention of the present invention is not affected at all, Japanese Patent Application Laid-Open No. 3-87 discloses a method of manufacturing a weather strip of the present invention and a related prior art for achieving the same object.
No. 226 publication is available.
【図1】従来におけるウェザストリップの製造方法を示
す型成形部成形後の金型の概略断面図FIG. 1 is a schematic cross-sectional view of a mold after a molded portion is formed, showing a conventional method of manufacturing a weather strip.
【図2】本発明の方法を窓枠ゴムに適用した場合の押出
成形部セット時の金型の要部概略断面図FIG. 2 is a schematic cross-sectional view of a main part of a mold at the time of setting an extruded part when the method of the present invention is applied to a window frame rubber.
【図3】図2におけるIII −III 線概略断面図FIG. 3 is a schematic sectional view taken along line III-III in FIG. 2;
【図4】本発明の製造方法を適用可能なガラスランの意
匠面部位を示す端面図FIG. 4 is an end view showing a design surface portion of a glass run to which the manufacturing method of the present invention can be applied.
【図5】同じくドアウェザストリップの意匠面部位を示
す端面図FIG. 5 is an end view showing a design surface portion of the door weather strip.
1、1A、1B 押出成形部 2、2A 接続端面 3 型成形部 11 成形用金型 13 キャビティ D 意匠面部位 1, 1A, 1B Extruded part 2, 2A Connection end face 3 Mold part 11 Mold for molding 13 Cavity D Design surface part
フロントページの続き (56)参考文献 特開 平6−190861(JP,A) 特開 平6−47839(JP,A) 特開 昭64−52548(JP,A) 特開 昭63−295215(JP,A) 特開 昭55−30981(JP,A) 特開 昭54−101877(JP,A) 特開 平3−87226(JP,A) 実開 昭59−75015(JP,U) (58)調査した分野(Int.Cl.7,DB名) B29C 45/00 - 45/17 Continuation of the front page (56) References JP-A-6-190861 (JP, A) JP-A-6-47839 (JP, A) JP-A-64-52548 (JP, A) JP-A-63-295215 (JP) JP-A-55-30981 (JP, A) JP-A-54-101877 (JP, A) JP-A-3-87226 (JP, A) JP-A-59-75015 (JP, U) (58) Field surveyed (Int. Cl. 7 , DB name) B29C 45/00-45/17
Claims (1)
てなるウェザストリップの製造に際して、 押出成形品を所定長に裁断して得た押出成形部を成形用
金型にセット後、該セットにより形成されるキャビティ
に成形材料を注入・硬化させて、型成形部を前記押出成
形部に一体接続する方法において、 前記押出成形部を、その接続端面が非意匠面部位側から
意匠面部位側に向かって長くなるように裁断して、前記
成形用金型にセットすることを特徴とするウェザストリ
ップの製造方法。When manufacturing a weather strip in which an extruded part and a molded part are integrally connected, an extruded part obtained by cutting an extruded product into a predetermined length is set in a molding die. In a method of injecting and curing a molding material into a cavity formed by the set and integrally connecting a molded part to the extrusion part, the extruded part is connected to a design surface part from a non-design surface part side. A method for manufacturing a weather strip, comprising cutting the mold so as to be longer toward a side and setting the cut in the molding die.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5269190A JP3005930B2 (en) | 1993-10-27 | 1993-10-27 | Method of manufacturing weather strip |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5269190A JP3005930B2 (en) | 1993-10-27 | 1993-10-27 | Method of manufacturing weather strip |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07117075A JPH07117075A (en) | 1995-05-09 |
JP3005930B2 true JP3005930B2 (en) | 2000-02-07 |
Family
ID=17468937
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5269190A Expired - Fee Related JP3005930B2 (en) | 1993-10-27 | 1993-10-27 | Method of manufacturing weather strip |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3005930B2 (en) |
-
1993
- 1993-10-27 JP JP5269190A patent/JP3005930B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH07117075A (en) | 1995-05-09 |
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Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19991019 |
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LAPS | Cancellation because of no payment of annual fees |