JPS6023133Y2 - Mold molding die - Google Patents
Mold molding dieInfo
- Publication number
- JPS6023133Y2 JPS6023133Y2 JP4766878U JP4766878U JPS6023133Y2 JP S6023133 Y2 JPS6023133 Y2 JP S6023133Y2 JP 4766878 U JP4766878 U JP 4766878U JP 4766878 U JP4766878 U JP 4766878U JP S6023133 Y2 JPS6023133 Y2 JP S6023133Y2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- molding die
- molding
- mold molding
- attached
- 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
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Description
【考案の詳細な説明】
この考案は合成樹脂等のモールド成形において、パリの
形成を未然に防止できるモールド成形用型に関する。[Detailed Description of the Invention] This invention relates to a molding die that can prevent the formation of flakes in molding of synthetic resin or the like.
車輌や家具等のクッション材としてウレタンフオームが
貫用されているが、このクッション材は一般にモールド
成形によって製造されている。Urethane foam is commonly used as cushioning material for vehicles, furniture, etc., and this cushioning material is generally manufactured by molding.
しかし、この種のモールド成形で使用される金型は、上
型と下型の合せ部の密着性が不充分であるため、型を閉
じたとき、合わせ部に隙間が形成される。However, in the mold used in this type of mold forming, the adhesion between the upper and lower molds is insufficient, so that when the mold is closed, a gap is formed at the joint.
したがって、金型にウレタン原液を注入して発泡キュア
させると、上記隙間から発泡圧に押されてウレタンフオ
ームの一部が外にはみ出るため、通称パリといわれる突
出物が形成される。Therefore, when a urethane stock solution is injected into a mold and the foam is cured, a portion of the urethane foam protrudes from the gap due to the foaming pressure, thereby forming a protrusion commonly known as a bulge.
この部分は不要であるから、成形品の仕上げ工程ではパ
リを鋏等で切取る作業をしており、その労力は大変なも
のであった。Since this part is unnecessary, the finishing process for the molded product involves cutting it off with scissors, which requires a lot of effort.
この考案の目的は、そうした作業を不要にするため、パ
リの形成を未然に防止できるモールド成形用型を提供す
ることにある。The purpose of this invention is to provide a molding die that can prevent the formation of flakes in order to make such operations unnecessary.
この考案のモールド成形用型は、金型の上型と下型の合
せ部に、この金型より硬度が小さい金属薄片をシール部
材として取付けたことを特徴とする。The molding die of this invention is characterized in that a thin metal piece having a hardness smaller than that of the die is attached as a sealing member to the joint portion of the upper die and the lower die of the die.
一実施例に基づいて、図面を参照しながらこの考案を説
明する。This invention will be explained based on one embodiment with reference to the drawings.
第１図はウレタンフオーム等のモールド成形に用いる金
型を示しており、この金型は上型１と下型２とで構成さ
れ、両者は蝶番３等で開閉自在に連結されている。FIG. 1 shows a mold used for molding urethane foam, etc., and this mold is composed of an upper mold 1 and a lower mold 2, which are connected by a hinge 3 or the like so as to be openable and closable.
そして、上型１と下型２の合せ部には、金型より硬度の
小さい鉛などの金属薄片４が、接着等の手段で下型２の
凸面２ａに取付けられている。At the joint between the upper mold 1 and the lower mold 2, a thin metal piece 4 made of lead or the like having a harderness than that of the mold is attached to the convex surface 2a of the lower mold 2 by means of adhesive or the like.
金型が以上のように構成されていると、型を閉じたとき
、第２図に示すように鉛の薄片４が上型１と下型２のシ
ール部材として作用するため、これまでと違って合せ部
の隙間の形成を確実に防止することができる。When the mold is constructed as described above, when the mold is closed, the lead flake 4 acts as a sealing member between the upper mold 1 and the lower mold 2 as shown in Fig. 2, which is different from the conventional method. It is possible to reliably prevent the formation of a gap in the mating portion.
したがって、パリの形成は未然に防止され、ウレタン原
液もその分だけ節約することができる。Therefore, the formation of paris is prevented, and the urethane stock solution can also be saved accordingly.
この考案ではシール部材の薄片４として金型より硬度が
小さいことを条件にしたが、その理由は、型を閉じたと
き、型を傷つけることなく、型を柔かく受けとめるから
であり、実施例の鉛のように、それが極端に柔らかい材
料であれば、押圧によって合せ部間に流れるから、密着
性はより確実なものとなる。In this invention, the hardness of the thin piece 4 of the sealing member was set to be smaller than that of the mold, and the reason for this was that when the mold was closed, it would receive the mold softly without damaging it. If the material is extremely soft, like this, it will flow between the mating parts when pressed, and the adhesion will be more reliable.
したがって、この考案では鉛塩外にも錫、アルミニウム
、銅、バビツドメタルなど、好ましくはブリネル硬度で
５０以下の金属、合金、合わせ板を使用することができ
る。Therefore, in this invention, in addition to lead salts, metals, alloys, and laminated plates preferably having a Brinell hardness of 50 or less, such as tin, aluminum, copper, and barbed metals, can be used.
さらに、金属薄片４としては、熱膨張係数の大きいもの
が好ましい。Furthermore, as the metal thin piece 4, one having a large coefficient of thermal expansion is preferable.
それは、金型が加温されていると、金属薄片４によるシ
ール作用が熱膨張によって助長されるからである。This is because when the mold is heated, the sealing effect of the metal flakes 4 is enhanced by thermal expansion.
なお、前記実施例では金属薄片４を下型２の凸面２ａに
取付けたが、これに対向する上型１面に取付けることが
できる腰あるいは両者に取付けることもてきる。In the above embodiment, the thin metal piece 4 is attached to the convex surface 2a of the lower mold 2, but it can also be attached to the waist that can be attached to the upper mold 1 surface opposite thereto, or to both of them.
さらに、上記凸面２ａの小面積を考慮して、第３図に示
すように凸面２ａに隣り合う金型の縁面にも金属薄片４
を取付けるようにすれば密着性を一層高めることが可能
である。Furthermore, considering the small area of the convex surface 2a, as shown in FIG.
It is possible to further improve the adhesion by attaching .
また金属薄片４の取付方法も、接着手段以外に、埋込み
、溶接など、公知の手段がそのまま採用できる。Further, as for the attachment method of the metal thin piece 4, other than adhesive means, known means such as embedding and welding can be used as is.
以上で明らかなように、この考案のモールド成形用型は
、上型と下型の合せ部に対し、シール部材としての金属
薄片を取付けであるので、ウレタンフオームを含めた合
成樹脂モールド成形一般において、パリの形成を未然に
防止し成形材料の節減をはかるという、実用的に顕著な
効果を奏することができる。As is clear from the above, the molding die of this invention has a thin metal piece attached as a sealing member to the joint of the upper and lower molds, so it is suitable for general synthetic resin molding including urethane foam. , it is possible to achieve a remarkable practical effect of preventing the formation of flakes and saving molding materials.
第１図はこの考案の一実施例を示す金型の斜視図、第２
図は同金型の型締め後の状態を示す縦断面図、第３図は
この考案の異なる実施例における、金型の合せ部近傍の
拡大断面図である。
１・・・・・・上型、２・・・・・・下型、３・・・・
・・蝶番、４・・・・・・金属薄片。Figure 1 is a perspective view of a mold showing one embodiment of this invention;
The figure is a longitudinal cross-sectional view showing the state of the mold after clamping, and FIG. 3 is an enlarged cross-sectional view of the vicinity of the mating part of the mold in a different embodiment of this invention. 1...Top mold, 2...Bottom mold, 3...
...Hinge, 4...Metal thin piece.
Claims (1)
型より低い硬度を有し、且つ型合せしたときに柔軟性を
有する金属薄片をシール部材として取付けたことを特徴
とするモールド成形用型。A mold characterized in that a thin metal piece, which has a hardness lower than that of the mold and is flexible when the molds are joined, is attached as a sealing member to the joining part of the upper mold and the lower mold of the mold used for mold forming. Mold for molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4766878U JPS6023133Y2 (en) | 1978-04-13 | 1978-04-13 | Mold molding die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4766878U JPS6023133Y2 (en) | 1978-04-13 | 1978-04-13 | Mold molding die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54152168U JPS54152168U (en) | 1979-10-23 |
| JPS6023133Y2 true JPS6023133Y2 (en) | 1985-07-10 |
Family
ID=28929946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4766878U Expired JPS6023133Y2 (en) | 1978-04-13 | 1978-04-13 | Mold molding die |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6023133Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5759731A (en) * | 1980-09-27 | 1982-04-10 | Nissan Motor Co Ltd | Preparation of foamed molded product |
-
1978
- 1978-04-13 JP JP4766878U patent/JPS6023133Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54152168U (en) | 1979-10-23 |
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