JPH0483616A - Mold for molding of corner part - Google Patents
Mold for molding of corner partInfo
- Publication number
- JPH0483616A JPH0483616A JP20016790A JP20016790A JPH0483616A JP H0483616 A JPH0483616 A JP H0483616A JP 20016790 A JP20016790 A JP 20016790A JP 20016790 A JP20016790 A JP 20016790A JP H0483616 A JPH0483616 A JP H0483616A
- Authority
- JP
- Japan
- Prior art keywords
- lip
- mold
- straight member
- corner
- molding
- 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.)
- Granted
Links
- 238000000465 moulding Methods 0.000 title abstract description 14
- 238000001125 extrusion Methods 0.000 claims description 8
- 238000005452 bending Methods 0.000 abstract 1
- 230000002950 deficient Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 238000001746 injection moulding Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012768 molten material Substances 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229920002994 synthetic fiber Polymers 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
-
- 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
- B29C45/14065—Positioning or centering articles in the mould
- B29C2045/14155—Positioning or centering articles in the mould using vacuum or suction
-
- 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
- B29C45/14065—Positioning or centering articles in the mould
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
この発明は、コーナー部成形用金型詳しくは、押し出し
成形に基づくストレート部材の端面にコーナー部材を射
出成形により一体的に成形連結するコーナー部成形用金
型に関する。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a mold for forming a corner part, specifically, a corner part molding die for integrally molding and connecting a corner member to the end face of a straight member based on extrusion molding by injection molding. Regarding molding molds.
〈従来の技術〉
一般に、ストレート部の他にコーナー部をも有する車両
用ウェザ−ストリップ、ガラスランなどウェザ−ストリ
ップ類を製造する場合、予め押し出し成形で成形された
ストレート部材の端部を型締め前にストレートな状態の
ままコーナー部成形用金型にセットし、型締めによりス
トレート部材の端面と金型のキャビテイ面とで形成され
るキャビティに、ゲートを介してＥＰＤＭなとのゴム材
料あるいは合成樹脂材料を射出注入し、または、型締め
により一のストレート部材の端面と他のストレート部材
の端面と金型のキャビテイ面の三者で形成されるキャビ
ティに、ゲートを介して上記と同様な材料を射出注入し
て、ストレート部材端面にコーナー部材を一体的に成形
連結させている（特開昭６１−１６７５１８号公報を参
照されたい、）。<Prior art> Generally, when manufacturing weather strips such as vehicle weather strips and glass runs that have corner portions in addition to straight portions, the ends of straight members that have been extruded in advance are clamped together. The front part is set in a mold for forming the corner part in a straight state, and by clamping the mold, a rubber material such as EPDM or a synthetic material is poured into the cavity formed by the end face of the straight member and the cavity surface of the mold through a gate. A resin material is injected or mold clamped into a cavity formed by the end face of one straight member, the end face of another straight member, and the cavity surface of the mold, and the same material as above is poured through a gate. The corner member is integrally molded and connected to the end face of the straight member by injection injection (see Japanese Patent Laid-Open No. 167518/1983).
〈発明が解決しようとする課題〉
しかし、従来のコーナー部成形用金型を使用して製造さ
れたウェザ−ストリップ類においては、意匠上問題があ
った。すなわち、射出成形により成形されたコーナー部
は、一般に色、艶などが押し出し成形によるストレート
部の色、艶などと比べて見栄久が悪いとされているが、
この見栄えの悪い射出成形による部分がコーナー部全体
を占め成形品の見栄えが悪くならざるを得なかった。<Problems to be Solved by the Invention> However, weatherstrips manufactured using conventional corner molding dies have had design problems. In other words, corner parts formed by injection molding are generally said to have a poorer appearance in terms of color and gloss compared to the color and gloss of straight parts formed by extrusion molding.
This unsightly injection molded portion occupies the entire corner portion, resulting in an unfavorable appearance of the molded product.
この発明は、上記の問題点に看目し、射出成形部分がコ
ーナー部において占める割り合いをできるだけ小さく抑
え、押し出し成形部分が占める割り合いを大きくして意
匠上価れたウェザ−ストリップ類を製造することができ
るコーナー部成形用金型の提供を主な課題とする。In view of the above-mentioned problems, this invention manufactures weather strips with good design by suppressing the proportion occupied by the injection molded part in the corner part and increasing the proportion occupied by the extrusion molded part. The main objective is to provide a corner molding die that can be used to form corners.
く課題を解決するための手段〉
この課題を解決するため、この発明のコーナー部成形用
金型は、
押し出し成形に基づくストレート部材であって、端部に
おいてリップ部が長手方向へ突出してなるストレート部
材の当該突出リップ部が、型締め前に湾曲させられてセ
ットされるリップセット部が形成され、
このリップセット部には、前記突出リップ部を湾曲させ
て当該リップセット部に当接させた際、当該湾曲状態の
突出リップ部を真空吸引力により当該リップセット部に
当該湾曲状態のまま拘留する吸引手段の吸引孔が形成さ
れている
ことを特徴とする。Means for Solving the Problem> In order to solve this problem, the corner molding die of the present invention is a straight member based on extrusion molding, and has a lip portion protruding in the longitudinal direction at the end. A lip set portion is formed in which the protruding lip portion of the member is curved and set before mold clamping, and the lip set portion includes a lip set portion in which the protruding lip portion is curved and brought into contact with the lip set portion. At this time, a suction hole of a suction means is formed for retaining the protruding lip portion in the curved state in the lip set portion by vacuum suction force in the curved state.
〈発明の作用効果〉
この発明によると、押し出し成形に基づくストレート部
材の突出リップ部がリップセット部にセットされコーナ
ー部の一部を占めることになるため、コーナー部におい
て射出成形部分が占める割り合いが減少し、成形品の見
栄えが良くなる。<Operations and Effects of the Invention> According to the present invention, the protruding lip portion of the straight member based on extrusion molding is set in the lip set portion and occupies a part of the corner portion, so that the proportion occupied by the injection molded portion in the corner portion is reduced. is reduced, and the appearance of the molded product improves.
また、リップセット部には、吸引手段の吸引孔が形成さ
れ、リップセット部に突出リップ部が湾曲させられて当
接された際、吸引孔を介して真空吸引力により突出リッ
プ部を湾曲状態のままリップセット部に拘留することが
できるため、突出リップ部を湾曲させた状態であっても
突出リップ部の弾性復帰力に十分に抗して突出リップ部
をリップセット部に良好にセットすることができ、突出
リップ部の位置ずれなどによる成形不良の防止に貢献で
きる。In addition, a suction hole of a suction means is formed in the lip set part, and when the protruding lip part is curved and brought into contact with the lip set part, a vacuum suction force is applied to the protruding lip part through the suction hole to bend the protruding lip part into a curved state. Even if the protruding lip part is in a curved state, the protruding lip part can be satisfactorily set in the lip setting part by sufficiently resisting the elastic return force of the protruding lip part. This can contribute to preventing molding defects due to misalignment of the protruding lip.
〈実施例〉
以下、この発明の一実施例を図面を参照しつつ説明する
。<Example> An example of the present invention will be described below with reference to the drawings.
この実施例に係るコーナー部成形用金型は、第３図図示
実線で示すような押し出し成形に基づくストレート部材
１の端面１ａにコーナー部材２を一体的に成形連結し、
第４図に示すような成形品３を製造するための金型であ
る。ここで、ストレート部材１は、第３図から明らかな
ように、端部においてリップ部４が長手方向へ突出して
なる。The corner molding die according to this embodiment integrally molds and connects the corner member 2 to the end surface 1a of the straight member 1 based on extrusion molding as shown by the solid line in FIG.
This is a mold for manufacturing a molded product 3 as shown in FIG. Here, as is clear from FIG. 3, the straight member 1 has a lip portion 4 protruding in the longitudinal direction at the end thereof.
この金型は、下型５と上型６と複数個の中板７８．９と
からなる。This mold consists of a lower mold 5, an upper mold 6, and a plurality of middle plates 78.9.
上型６には、第２図に示すように、スプルー１０および
ゲート１１が形成されている。As shown in FIG. 2, the upper mold 6 has a sprue 10 and a gate 11 formed thereon.
中板７には、第１．２図に示すように、ストレート部材
１の突出リップ部４が、型締め前に湾曲させられてセッ
トされるリップセット部１２が形成されている。このリ
ップセット部１２には、突出リップ部４を湾曲させてリ
ップセット部１２に当接させた際、当該湾曲状態の突出
リップ部４（第３図図示二点鎖線で示す。）をその裏面
４ａ側から真空吸引力により当該リップセット部１２に
当該湾曲状態のまま拘留する吸引手段のベント１３．１
３、・・・が適宜位置に複数個形成されている、各ベン
ト１３は多孔質の焼結ベントであり、各ベント１３．１
３・・・間のピッチは、２０ｍｍ程度、各ベント１３の
外径は６ｍｍφ程度、その孔径は０．３ｍｍφ程度とし
、突出リップ部４の裏面４ａにベント１３の形状が転写
されないよう設定しである。また、各ベント１３は、図
示しない真空ポンプに空気通路１４を介して連通されて
いる、なお、焼結ベント１３の代わりに、中板７に直接
加工を施して多数の１ｍｍφ程度の孔を設けてもよい。As shown in FIG. 1.2, the middle plate 7 is formed with a lip set part 12 in which the protruding lip part 4 of the straight member 1 is curved and set before mold clamping. When the protruding lip part 4 is curved and brought into contact with the lip set part 12, the protruding lip part 4 in the curved state (indicated by the two-dot chain line in FIG. 3) is attached to the back surface of the lip set part 12. A vent 13.1 of a suction means that retains the lip set portion 12 in the curved state by vacuum suction force from the 4a side.
Each vent 13 is a porous sintered vent, in which a plurality of vents 13.1 are formed at appropriate positions.
3... The pitch between the vents 13 is approximately 20 mm, the outer diameter of each vent 13 is approximately 6 mmφ, and the hole diameter is approximately 0.3 mmφ, so that the shape of the vent 13 is not transferred to the back surface 4a of the protruding lip portion 4. be. Each vent 13 is connected to a vacuum pump (not shown) via an air passage 14.Instead of the sintered vent 13, a large number of holes of approximately 1 mmφ are formed by directly processing the intermediate plate 7. You can.
次に上記のような構成の金型の使用態様例について簡単
に説明する。Next, an example of how the mold configured as described above is used will be briefly described.
まず、中板７．８．９がセットされた下型５に対して、
第３図図示のストレート部材１をその突出リップ部４を
リップセット部１２の形状に沿うように湾曲させてリッ
プセット部１２にセットする。このセットの際、吸引手
段は作動状態にあり、リップセット部１２に突出リップ
部４が湾曲させられて当接された際、突出リップ部４は
ベント１３．１３、・・・を介して真空吸引力により湾
曲状態のままリップセット部１２に拘留される。したが
って、突出リップ部４を湾曲させた状態であっても、突
出リップ部４の弾性復帰力に十分に抗して突出リップ部
４をリップセット部１２に良好にセットすることができ
、突出リップ部４の位置ずれなどによる成形不良の防止
に貢献できる。First, for the lower mold 5 in which the middle plate 7.8.9 is set,
The straight member 1 shown in FIG. 3 is set in the lip set part 12 with its protruding lip part 4 curved to follow the shape of the lip set part 12. At the time of this setting, the suction means is in an operating state, and when the protruding lip part 4 is curved and brought into contact with the lip setting part 12, the protruding lip part 4 is vacuumed through the vents 13, 13, . It is held in the lip set portion 12 in a curved state by the suction force. Therefore, even if the protruding lip part 4 is in a curved state, the protruding lip part 4 can be satisfactorily set in the lip setting part 12 by sufficiently resisting the elastic return force of the protruding lip part 4, and the protruding lip part 4 This can contribute to preventing molding defects due to misalignment of the portion 4, etc.
次に、他のストレート部材１５の端部を下型５にセット
し、型締めする。Next, the end of the other straight member 15 is set in the lower mold 5 and the mold is clamped.
次に、この型締めにより形成されたキャビティ１６、す
なわち、第１図に示すように、一方のストレート部材ｌ
の端面１ａと他方のストレート部材１５の端面１５ａと
金型のキャビテイ面１７の王者で形成されるキャビティ
１６に、スプルーｌ○およびゲート１１を順に介してス
トレート部材１．１５と同一の容融材料を射出注入し、
一方のストレート部材１の端面１ａ、および、他方のス
トレート部材１５の端面１５ａに、コーナー部材２を一
体的に成形連結させる。Next, the cavity 16 formed by this mold clamping, that is, as shown in FIG.
The same molten material as the straight member 1.15 is passed through the sprue l○ and the gate 11 in order into the cavity 16 formed by the end face 1a of the straight member 15, the end face 15a of the other straight member 15, and the cavity surface 17 of the mold. injection injection,
A corner member 2 is integrally molded and connected to the end surface 1a of one straight member 1 and the end surface 15a of the other straight member 15.
次に、注入された容融材料の硬化後、型開きし、離型し
、第４図に示すような成形品３が製造される。Next, after the injected molten material has hardened, the mold is opened and released, and a molded article 3 as shown in FIG. 4 is manufactured.
以上説明したように、この金型を使用した場合、押し出
し成形に基づくストレート部材１の突出リップ部４がリ
ップセット部１２にセットされコーナー部の一部を占め
ることになるため、コーナー部において射出成形部分が
占める割り合いが減少し、成形品３の見栄えが良くなる
。As explained above, when this mold is used, the protruding lip part 4 of the straight member 1 based on extrusion molding is set in the lip set part 12 and occupies a part of the corner part, so the injection molding is performed at the corner part. The proportion occupied by the molded part is reduced, and the appearance of the molded product 3 is improved.
なお、上記実施例は、一方のストレート部材１の端面１
ａ、他方のストレート部材１５の端面１５ａにコーナー
部材２を一体的に成形連結させるための金型であるが、
この発明による金型は、これのみに限定されるものでは
なく、他に、一方のストレート部材ｌの端面１ａのみに
コーナー部材２を一体的に成形連結させる金型にも適用
できるIn addition, in the above embodiment, the end surface 1 of one straight member 1
a, a mold for integrally molding and connecting the corner member 2 to the end surface 15a of the other straight member 15;
The mold according to the present invention is not limited to this, and can also be applied to a mold in which the corner member 2 is integrally molded and connected only to the end surface 1a of one straight member l.
第１図は、この発明の一実施例に係るコーナー部成形用
金型における下型側の金型の平面図、第２図は、第１図
図示■−■線断面図、第３図は、第１図の金型にセット
されるストレート部材の端部の斜視図、
第４図は、第１図の金型により成形された成形品の主要
部の斜視図である。
ｌ・・・ストレート部材、
ｌａ・・・ストレート部材端面、
２・・・コーナー部材、
４・・・リップ部（突出リップ部）、
１２・・・リップセット部、
１３・・・ベント（吸引孔）。
第１
図FIG. 1 is a plan view of the lower die side of a corner molding die according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line ■-■ shown in FIG. 1, and FIG. , a perspective view of the end of the straight member set in the mold shown in FIG. 1, and FIG. 4 a perspective view of the main part of the molded product formed by the mold shown in FIG. l...Straight member, la...Straight member end face, 2...Corner member, 4...Lip part (protruding lip part), 12...Lip set part, 13...Vent (suction hole) ). Figure 1
Claims (1)
おいてリップ部が長手方向へ突出してなるストレート部
材の当該突出リップ部が、型締め前に湾曲させられてセ
ットされるリップセット部が形成され、 このリップセット部には、前記突出リップ部を湾曲させ
て当該リップセット部に当接させた際、当該湾曲状態の
突出リップ部を真空吸引力により当該リップセット部に
当該湾曲状態のまま拘留する吸引手段の吸引孔が形成さ
れている ことを特徴とするコーナー部成形用金型。[Claims] A lip set, which is a straight member based on extrusion molding, in which the lip part of the straight member projects in the longitudinal direction at the end thereof, and the protruding lip part of the straight member is bent and set before mold clamping. A portion is formed in this lip set portion, and when the protruding lip portion is curved and brought into contact with the lip set portion, the curved protruding lip portion is applied to the lip set portion by vacuum suction force. A mold for forming a corner part, characterized in that a suction hole for a suction means for retaining the state is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20016790A JP2945997B2 (en) | 1990-07-27 | 1990-07-27 | Corner molding die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20016790A JP2945997B2 (en) | 1990-07-27 | 1990-07-27 | Corner molding die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0483616A true JPH0483616A (en) | 1992-03-17 |
| JP2945997B2 JP2945997B2 (en) | 1999-09-06 |
Family
ID=16419909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20016790A Expired - Fee Related JP2945997B2 (en) | 1990-07-27 | 1990-07-27 | Corner molding die |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2945997B2 (en) |
-
1990
- 1990-07-27 JP JP20016790A patent/JP2945997B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2945997B2 (en) | 1999-09-06 |
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