JPH0684024B2 - Molding equipment - Google Patents
Molding equipmentInfo
- Publication number
- JPH0684024B2 JPH0684024B2 JP62322186A JP32218687A JPH0684024B2 JP H0684024 B2 JPH0684024 B2 JP H0684024B2 JP 62322186 A JP62322186 A JP 62322186A JP 32218687 A JP32218687 A JP 32218687A JP H0684024 B2 JPH0684024 B2 JP H0684024B2
- Authority
- JP
- Japan
- Prior art keywords
- resin
- mold
- resin filling
- molded product
- filling space
- 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 - Lifetime
Links
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 ［技術分野］ 本発明は、浴槽、洗面器等の容器を成形するための成形
型装置に関する。Description: TECHNICAL FIELD The present invention relates to a molding die apparatus for molding a container such as a bathtub or a washbasin.
［背景技術］ 従来、例えば注型成形により浴槽を成形する場合、第５
図に示すように、下型１′に上方に開口する凹型部４′
を設け、上型３′に下方突出する凸型部２′を設け、上
下型３′,1′を型締めして凹型部４′と凸型部２′とで
樹脂充填用空所６′を形成し、この樹脂充填用空所６′
の上部に連通するようにガス抜き部７′を設けると共に
下部に連通するように樹脂供給部８′を設け、下部に連
通する樹脂供給部８′から樹脂充填用空所内６′に樹脂
を充填していくとともにガス抜き部からガス抜きをして
いた。ところが、従来にあっては単に樹脂供給部８′を
下部に設けると共にガス抜き部７′を上部に設けていた
だけであった。ところがこのように単に上部にガス抜き
部７′を設けただけのものでは、ガスが十分に抜けきら
ず、樹脂充填用空所６′内に正確に樹脂が充填されず、
ガスが内部に残って成形品に巣が発生する原因となって
いた。このことを本発明者が研究した結果、上記現象は
樹脂供給部８′内に下部から樹脂を注入した場合、注型
成形等においては樹脂が粘性を有しているため樹脂充填
用空所６′の上部内に樹脂が完全に充填されないうちに
上部に設けたガス抜き部７′が樹脂で塞がれてしまうこ
とがあったからであることが判明した。[Background Art] Conventionally, for example, when molding a bathtub by cast molding,
As shown in the figure, a concave mold portion 4'opened upward in the lower mold 1 '.
The upper mold 3'is provided with a convex mold part 2'projecting downward, and the upper and lower molds 3 ', 1'are clamped to form a resin filling space 6'with the concave mold part 4'and the convex mold part 2'. To form the resin filling space 6 '.
The gas venting portion 7'is provided so as to communicate with the upper portion of the resin and the resin supply portion 8'is provided so as to communicate with the lower portion. As I was doing so, I was venting gas from the venting section. However, in the prior art, the resin supply portion 8'is simply provided at the lower portion and the gas vent portion 7'is provided at the upper portion. However, in the case where only the gas venting portion 7'is simply provided at the upper portion as described above, the gas cannot be sufficiently exhausted, and the resin filling space 6'is not accurately filled with the resin.
The gas remained inside, causing the formation of cavities in the molded product. As a result of research by the inventor of the present invention, as a result of the above phenomenon, when the resin is injected into the resin supply portion 8 ′ from the lower portion, the resin has a viscosity in the casting molding or the like because the resin has a viscosity. It was found that the gas vent portion 7'provided on the upper part of the ′ could be blocked by the resin before the upper part of the ′ was completely filled with the resin.
［発明の目的］ 本発明は、上記の点に鑑みて発生したものであって、そ
の目的とするところは、簡単な構成で、ガス抜きが確実
にできて容器状の成形品に巣などが生じないようにでき
る成形型装置を提供するにある。[Object of the Invention] The present invention has been made in view of the above points, and an object of the present invention is to provide a simple structure, ensure reliable degassing, and a cavity in a container-shaped molded product. It is an object of the present invention to provide a mold apparatus that can prevent the occurrence of such a problem.
［発明の開示］ 本発明の成形型装置は、下型１の上面部に凸型部２を上
方に向けて突出させ、上型３の下面部に下方に開口し且
つ上方に凹んだ凹型部４を設け、上下型3,1を型締めし
て凸型部２と凹型部４とで容器状の成形品５を成形する
ための樹脂充填用空所６を形成し、この樹脂充填用空所
６の下部の一端部付近に連通する樹脂供給部８を設け、
樹脂供給部８の上方に位置する樹脂充填用空所６の上部
端部と対向する樹脂充填用空所６の上部の他端部付近に
連通するガス抜き部７を設けて成るものであって、この
ような構成を採用することで、上記した本発明の目的を
達成したものである。すなわち樹脂充填用空所６の下部
の一端部付近に連通する樹脂供給部８を設け、樹脂供給
部８の上方に位置する樹脂充填用空所６の上部端部と対
向する樹脂充填用空所６の上部の他端部付近に連通する
ガス抜き部７を設けることで、樹脂充填用空所６の上部
の他端部に設けたガス抜き部７が樹脂供給部８から最も
遠い位置に位置することとなり、樹脂充填用空所６の下
部の一端部に連通した樹脂供給部８から順次樹脂を注入
していった場合、樹脂の充填の最後にガス抜き部７に樹
脂が至ることとなり、確実にガス抜きができるようにな
ったものである。DISCLOSURE OF THE INVENTION In the molding die apparatus of the present invention, the convex mold portion 2 is projected upward on the upper surface portion of the lower mold 1, and the concave mold portion is opened downward in the lower surface portion of the upper mold 3 and is concave upward. 4, and the upper and lower molds 3 and 1 are clamped to form a resin filling cavity 6 for molding a container-shaped molded product 5 by the convex mold portion 2 and the concave mold portion 4, and the resin filling cavity 6 is formed. A resin supply part 8 communicating with one end of the lower part of the place 6 is provided,
A gas venting portion 7 is provided which communicates with the upper end of the resin filling cavity 6 located above the resin supply portion 8 and near the other end of the upper portion of the resin filling cavity 6. By adopting such a configuration, the above-mentioned object of the present invention is achieved. That is, a resin supply part 8 communicating with one end of the lower part of the resin filling space 6 is provided, and the resin filling space facing the upper end of the resin filling space 6 located above the resin supply part 8. By providing the gas vent 7 communicating near the other end of the upper part of 6 with the gas vent 7 provided at the other end of the upper part of the resin filling space 6 is located farthest from the resin supply part 8. Therefore, when the resin is sequentially injected from the resin supply portion 8 communicating with the lower end portion of the resin filling space 6, the resin reaches the degassing portion 7 at the end of the resin filling, It is the one that can surely degas.
以下本発明を添付図面に示す実施例により詳述する。Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings.
第１図には本発明の成形型の一実施例が示してある。下
型１は上面部に凸型部２が上方に向けて突出させてあ
る。この凸型部２は上部が下部よりも巾広となってい
る。上型３の下面部には下方に開口し且つ上方に向けて
凹んだ凹型部４が形成してあり、この凹型部４は下部が
上部よりも巾広となっている。上記の構成の上型３と下
型１とを型締めすることで容器状の成形品５を成形する
ための樹脂充填用空所６が形成してある。上記のように
上下型3,1により成形型Ａが構成されるのであるが、本
発明にあっては、この成形型Ａ上部に樹脂充填用空所６
の上部と連通するガス抜き部７が設けてある。また成形
型Ａの下部に樹脂充填用空所６に連通する樹脂供給部８
が設けてある。ここで、樹脂供給部８は樹脂充填用空所
６の下部の一端部付近に連通するように設けてあり、樹
脂供給部８の上方に位置する樹脂充填用空所６の上部端
部と対向する樹脂充填用空所６の上部の他端部付近に連
通するガス抜き部７が設けてある。添付図面の実施例で
は、樹脂充填用空所６の最上端部と連通するように上型
３の他端部付近にガス抜き部７が設けてあり、また下型
１の周部の一端部に突部９を突設してこの突部９に樹脂
充填用空所６に連通する樹脂供給部８が設けてある。上
型３に下型１と型締めした場合に上記突部９と嵌合する
凹所10が設けてある。また下型１または上型３の合わせ
面の周囲には弾性を有するシール部材14が設けてあって
上下型3,1を型締めした場合に弾性を有するシール部材1
4が合わせ面に介在されてシールするようになってい
る。添付図面の実施例では成形する容器状の成形品５と
しては浴槽の例が示してある。そして樹脂充填用空所６
の上部は容器状の成形品５の底を成形する部分となる箇
所であり、この樹脂充填用空所６の上部はガス抜き部７
部分が最上端となるように傾斜しており（このため凸型
部２の上面及び凹型部４の上底面はいずれもガス抜き部
７部分側に向かって上り傾斜した傾斜面11,12となって
おり）、このため成形された容器状の成形品５のガス抜
き部７部分に孔を突孔してここに排水孔部13を設けるこ
とで、容器状の成形品５を通常の使用姿勢（つまり成形
品５の開口が上となるような姿勢にして使用する）で使
用すると、容器状の成形品５の最下部に排水孔部13が位
置し、容器状の成形品５の底部が排水孔部13に向けて下
り傾斜することになる。FIG. 1 shows an embodiment of the molding die of the present invention. The lower mold 1 has a convex mold portion 2 protruding upward from the upper surface thereof. The upper portion of the convex portion 2 is wider than the lower portion. On the lower surface of the upper mold 3, there is formed a concave mold part 4 which is open downward and is concave upward, and the lower part of the concave mold part 4 is wider than the upper part. A resin-filling space 6 for molding a container-shaped molded product 5 is formed by clamping the upper mold 3 and the lower mold 1 having the above-described configuration. As described above, the upper and lower molds 3 and 1 constitute the molding die A. In the present invention, a resin filling space 6 is provided above the molding die A.
Is provided with a gas vent 7 communicating with the upper part of the. Further, a resin supply portion 8 communicating with the resin filling space 6 is provided below the molding die A.
Is provided. Here, the resin supply part 8 is provided so as to communicate with the vicinity of one end of the lower part of the resin filling space 6, and faces the upper end part of the resin filling space 6 located above the resin supply part 8. A gas vent portion 7 is provided in the vicinity of the other end of the upper portion of the resin filling space 6 to communicate with. In the embodiment shown in the accompanying drawings, a gas vent 7 is provided near the other end of the upper mold 3 so as to communicate with the uppermost end of the resin filling space 6, and one end of the peripheral part of the lower mold 1 is provided. The protrusion 9 is provided with a protrusion, and the protrusion 9 is provided with a resin supply portion 8 communicating with the resin filling space 6. The upper mold 3 is provided with a recess 10 that fits with the lower mold 1 when the mold is clamped. Further, an elastic seal member 14 is provided around the mating surface of the lower mold 1 or the upper mold 3, and has elastic properties when the upper and lower molds 3, 1 are clamped.
4 is interposed between the mating surfaces to seal. In the embodiment of the accompanying drawings, an example of a bath is shown as the container-shaped molded product 5 to be molded. And resin filling space 6
Is an area where the bottom of the container-shaped molded product 5 is formed, and the upper portion of the resin filling space 6 is the gas venting area
The part is inclined so as to be the uppermost end (thus, the upper surface of the convex mold portion 2 and the upper bottom surface of the concave mold portion 4 are inclined surfaces 11 and 12 that are inclined upward toward the degassing portion 7 side. Therefore, by forming a hole in the degassing portion 7 of the molded container-shaped molded product 5 and providing the drainage hole portion 13 there, the container-shaped molded product 5 is normally used. When used in such a manner that the opening of the molded product 5 faces upward, the drain hole 13 is located at the bottom of the container-shaped molded product 5, and the bottom of the container-shaped molded product 5 is It will be inclined downward toward the drain hole portion 13.
しかして、上記のような構成の成形型Ａは下部の樹脂供
給部８から樹脂充填用空所６の下部に樹脂を充填して注
型成形するのであるが、この場合樹脂の充填と共にガス
抜き部７からガスを抜き、順次樹脂を充填することで樹
脂充填用空所８に完全に樹脂を充填するものである。こ
こで樹脂充填空所６の下部の一端部から樹脂を順次注入
していくと、第１図のイ、ロ、ハのように樹脂位置が傾
斜しながら上昇していくものである。これは、注型成形
の場合、樹脂が粘性を有しているので、樹脂供給部８に
近い側程先に上昇し、樹脂供給部８から遠い側程上昇が
遅く、この結果、第１図のイ、ロ、ハのように順次傾斜
しながら樹脂が上昇していくものである。したがって、
樹脂供給部８の対角線上に位置する樹脂供給部８から最
も遠いガス抜き部７部分が最後に樹脂が充填されること
となり、ガスは最後までガス抜き部７から抜けることと
なる。In the molding die A having the above-described structure, the resin is filled from the lower resin supply portion 8 to the lower portion of the resin filling space 6 and cast molding is performed. The resin is completely filled in the resin filling space 8 by removing the gas from the portion 7 and sequentially filling the resin. Here, when the resin is sequentially injected from one end portion of the lower portion of the resin-filled space 6, the resin position rises while inclining like a, b, and c in FIG. This is because in the case of cast molding, since the resin has a viscosity, it rises earlier in the side closer to the resin supply unit 8 and slower in the side farther from the resin supply unit 8. As a result, as shown in FIG. The resin rises while gradually inclining like No. A, No. B, and No. C. Therefore,
The gas vent portion 7 located on the diagonal line of the resin feed portion 8 farthest from the resin feed portion 8 is filled with the resin lastly, and the gas is exhausted from the gas vent portion 7 to the end.
第２図の実施例では下型１の一方の短辺側に樹脂供給部
８を設け、上型３の他方の短辺側付近にガス抜き部７を
設けた実施例を示しているが、第３図のように下型１の
一方の長辺側に樹脂供給部８を設け、上型３の他方の長
辺側付近にガス抜き部７を設けてもよいものである。The embodiment of FIG. 2 shows an embodiment in which the resin supply portion 8 is provided on one short side of the lower mold 1 and the gas vent portion 7 is provided near the other short side of the upper mold 3. As shown in FIG. 3, a resin supply part 8 may be provided on one long side of the lower mold 1 and a gas vent part 7 may be provided near the other long side of the upper mold 3.
なお添付図面の実施例では容器状の成形品５として浴槽
の例を示しているが、成形品５として必ずしも浴槽にの
み限定されず、容器状のものであれば、例えば洗面器、
流しのシンク等種々のものが考えられる。Although an example of a bathtub is shown as the container-shaped molded product 5 in the embodiments of the accompanying drawings, the molded product 5 is not necessarily limited to the bathtub, and if it is a container-shaped molded product, for example, a washbasin,
Various things such as sinks can be considered.
［発明の効果］ 本発明にあっては、叙述のように樹脂充填用空所の下部
の一端部付近に連通する樹脂供給部を設け、樹脂供給部
の上方に位置する樹脂充填用空所の上部端部と対向する
樹脂充填用空所の上部の他端部付近に連通するガス抜き
部を設けてあるので、樹脂充填用空所の上部の他端部に
設けたガス抜き部が樹脂充填用空所の下部の一端部付近
に連通させた樹脂供給部から最も遠い位置に位置するこ
ととなり、この結果樹脂充填用空所の下部の一端部に連
通した樹脂供給部から順位樹脂を注入していった場合、
樹脂の充填の最後にガス抜き部に樹脂が至ることとな
り、確実にガス抜きができ、巣などの不良のない容器状
の成形品を簡単な装置で成形できるものである。[Advantages of the Invention] In the present invention, as described above, a resin supply portion communicating with the lower end portion of the resin filling cavity is provided, and the resin filling cavity located above the resin supply portion is provided. Since a gas vent that communicates with the other end of the upper part of the resin filling cavity that faces the upper end is provided, the gas vent provided at the other end of the resin filling cavity is filled with resin. It will be located at the farthest position from the resin supply part that is in communication with the lower end of the vacant space, and as a result, the resin will be injected from the resin supply part that communicates with the lower end of the resin filling space. If you go
The resin reaches the degassing portion at the end of the filling of the resin, so that the degassing can be reliably performed, and a container-shaped molded product having no defects such as cavities can be molded by a simple device.
第１図は本発明の一実施例の断面図、第２図は同上の下
型の斜視図、第３図は本発明の他の実施例の斜視図、第
４図は本発明の成形型により成形した容器状の成形品の
断面図、第５図は従来の成形型の断面図であって、１は
下型、２は凸型部、３は上型、４は凹型部、５は成形
品、６は樹脂充填用空所、７はガス抜き部、８は樹脂供
給部である。FIG. 1 is a sectional view of an embodiment of the present invention, FIG. 2 is a perspective view of the lower mold of the same, FIG. 3 is a perspective view of another embodiment of the present invention, and FIG. 4 is a molding mold of the present invention. FIG. 5 is a cross-sectional view of a container-shaped molded product molded by the above, FIG. 5 is a cross-sectional view of a conventional molding die, 1 is a lower mold, 2 is a convex mold part, 3 is an upper mold part, 4 is a concave mold part, 5 is a A molded product, 6 is a void for resin filling, 7 is a degassing part, and 8 is a resin supply part.
Claims (1)
させ、上型の下面部に下方に開口し且つ上方に凹んだ凹
型部を設け、上下型を型締めして凸型部と凹型部とで容
器状の成形品を成形するための樹脂充填用空所を形成
し、この樹脂充填用空所の下部の一端部付近に連通する
樹脂供給部を設け、樹脂供給部の上方に位置する樹脂充
填用空所の上部端部と対向する樹脂充填用空所の上部の
他端部付近に連通するガス抜き部を設けて成ることを特
徴とする成形型装置。1. A convex mold part is projected upward on an upper surface part of a lower mold, and a concave mold part opened downward and concaved upward is provided on a lower surface part of the upper mold. A resin filling cavity for molding a container-shaped molded product is formed by the mold section and the concave mold section, and a resin supply section communicating with one end of the lower part of the resin filling cavity is provided. A mold venting device, which is provided near the other end of the upper part of the resin filling cavity facing the upper end of the resin filling cavity located above the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62322186A JPH0684024B2 (en) | 1987-12-18 | 1987-12-18 | Molding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62322186A JPH0684024B2 (en) | 1987-12-18 | 1987-12-18 | Molding equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01160617A JPH01160617A (en) | 1989-06-23 |
| JPH0684024B2 true JPH0684024B2 (en) | 1994-10-26 |
Family
ID=18140904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62322186A Expired - Lifetime JPH0684024B2 (en) | 1987-12-18 | 1987-12-18 | Molding equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0684024B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7113094B2 (en) | 1998-08-14 | 2006-09-26 | 3M Innovative Properties Company | Applications for radio frequency identification systems |
| US7588185B2 (en) | 2001-06-07 | 2009-09-15 | 3M Innovative Properties Company | RFID data collection and use |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9713071D0 (en) * | 1997-06-21 | 1997-08-27 | Movevirgo Limited | Moulding method and apparatus |
| JP2013126732A (en) * | 2011-12-19 | 2013-06-27 | Panasonic Corp | Resin molded article and molding device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5566123U (en) * | 1978-06-15 | 1980-05-07 | ||
| JPH0720622B2 (en) * | 1987-03-27 | 1995-03-08 | 松下電工株式会社 | Molding equipment for artificial marble moldings |
| JPH0180312U (en) * | 1987-11-14 | 1989-05-30 |
-
1987
- 1987-12-18 JP JP62322186A patent/JPH0684024B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7113094B2 (en) | 1998-08-14 | 2006-09-26 | 3M Innovative Properties Company | Applications for radio frequency identification systems |
| US7123151B2 (en) | 1998-08-14 | 2006-10-17 | 3M Innovative Properties Company | Applications for radio frequency identification systems |
| US7471205B2 (en) | 1998-08-14 | 2008-12-30 | 3M Innovative Properties Company | Applications for radio frequency identification systems |
| US7588185B2 (en) | 2001-06-07 | 2009-09-15 | 3M Innovative Properties Company | RFID data collection and use |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01160617A (en) | 1989-06-23 |
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