JPS6321383Y2 - - Google Patents
Info
- Publication number
- JPS6321383Y2 JPS6321383Y2 JP9639379U JP9639379U JPS6321383Y2 JP S6321383 Y2 JPS6321383 Y2 JP S6321383Y2 JP 9639379 U JP9639379 U JP 9639379U JP 9639379 U JP9639379 U JP 9639379U JP S6321383 Y2 JPS6321383 Y2 JP S6321383Y2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- hole
- protrusion
- molded product
- 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.)
- Expired
Links
- 238000000465 moulding Methods 0.000 claims description 11
- 239000012778 molding material Substances 0.000 claims description 10
- 238000004806 packaging method and process Methods 0.000 description 4
- 229920006328 Styrofoam Polymers 0.000 description 3
- 239000008261 styrofoam Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229920006248 expandable polystyrene Polymers 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Description
【考案の詳細な説明】
本考案は発泡スチロールなどの成形に用いられ
る金型の改良に関する。[Detailed Description of the Invention] The present invention relates to an improvement in a mold used for molding styrofoam and the like.
カートンボツクスなどに製品を梱包する場合、
製品を保護するために発泡スチロール等でなるい
わゆる中子が使用される。この中子はたとえば電
子機器などに用いる場合、つまみなどを通す孔が
設けられる。 When packaging products in carton boxes, etc.
A so-called core made of styrofoam or the like is used to protect the product. When this core is used, for example, in electronic equipment, it is provided with a hole through which a knob or the like can be passed.
このような中子は従来第１図に示すように、着
脱自在となる第１の金型１と第２の金型２を結合
し、この第１の金型１と第２の金型２との間に所
望の形状の空隙が形成されるようにして、ここに
外部から成形材料を注入し、加熱などの処理を行
なつて成型していた。成型品３は第１と第２の金
型１，２を離して外部に取出す。 Conventionally, as shown in FIG. 1, such a core combines a first mold 1 and a second mold 2 that can be attached and detached, and the first mold 1 and the second mold 2 are connected to each other. A molding material was injected from the outside so that a gap of the desired shape was formed between the molding material and the molding material, and the molding material was then heated and molded. The molded product 3 is taken out by separating the first and second molds 1 and 2.
このような成形法において上記の如き孔を成形
品に設けるために、第１の金型１の一部に孔４を
設けると共に、第２の金型２に上記孔を塞ぐ突部
５を設け、この突部５を除いて成形材料が充填さ
れるようにしている。 In order to provide the above-mentioned holes in the molded product in such a molding method, a hole 4 is provided in a part of the first mold 1, and a protrusion 5 that closes the hole is provided in the second mold 2. , except for this protrusion 5, which is filled with the molding material.
しかしながらこの場合、孔４と突部５との間に
僅かでも隙間があると、第２図ａに示すように成
形品３の孔６にいわゆるばり６Ａが生じる。この
ばり６Ａは梱包する場合、カートンボツクスと触
れて折れ、落下して散らばることになる。さらに
このばり６Ａが製品に附着し美観を損ねる要因と
もなつていた。このため従来は梱包の前にばりを
削り取る作業が必要であつた。 However, in this case, if there is even a slight gap between the hole 4 and the protrusion 5, a so-called burr 6A will occur in the hole 6 of the molded product 3, as shown in FIG. 2a. When this burr 6A is packed, it will break when it comes into contact with the carton box, and will fall and scatter. Furthermore, this burr 6A was attached to the product and became a factor detracting from its aesthetic appearance. For this reason, in the past, it was necessary to remove the burrs before packaging.
このばりは一般に金型の精度を向上させること
によつて防止することができる。しかし発泡スチ
ロールには主にアルミニウム製の金型が使用され
精度を上げるにも限度があり、また精度を上げて
も使用中に摩耗によつて精度が低下してしまう。
このためこの種の金型ではばりの発生はやむを得
ないものとされていた。 This flash can generally be prevented by improving the precision of the mold. However, aluminum molds are mainly used for foamed polystyrene, and there is a limit to how much accuracy can be increased, and even if the accuracy is increased, the accuracy decreases due to wear during use.
For this reason, the occurrence of burrs was considered unavoidable in this type of mold.
本考案はこのような欠点を改善したもので、ば
りが生じてもそれが成形品の表面に出ないように
して孔をあけることができる成形用金型を提供す
るものである。 The present invention improves these drawbacks and provides a molding die that can make holes without causing burrs to appear on the surface of the molded product.
以下図面を参照して本考案の一実施例を説明す
る。第３図において１１は凹状部１１Ａを有する
第１の金型、１２は上記第１の金型１１の凹状部
１１Ａに対応する突状部１２Ａを有する第２の金
型であり、上記第１と第２の金型１１，１２は着
脱自在で且つ結合した場合、凹状部１１Ａと突状
部１２Ａとの間に所定の空隙が形成されるように
なつている。上記凹状部１１Ａの底面中央部には
外部と貫通する孔１１Ｂが設けられており、さら
にこの孔１１Ｂの周縁に環状の突起１１ｃが形成
されている。一方突状部１２Ａには上記孔１１Ｂ
と対向する位置に上記環状突起１１ｃの孔に僅か
挿入される突部１２Ｂが設けられている。 An embodiment of the present invention will be described below with reference to the drawings. In FIG. 3, 11 is a first mold having a concave portion 11A, 12 is a second mold having a protrusion 12A corresponding to the concave portion 11A of the first mold 11, and the first mold has a concave portion 11A. The second molds 11 and 12 are detachable, and when combined, a predetermined gap is formed between the concave portion 11A and the protruding portion 12A. A hole 11B passing through to the outside is provided at the center of the bottom surface of the recessed portion 11A, and an annular projection 11c is formed around the periphery of this hole 11B. On the other hand, the protruding portion 12A has the hole 11B.
A protrusion 12B that is slightly inserted into the hole of the annular protrusion 11c is provided at a position facing the annular protrusion 11c.
このような第１の金型１１と第２の金型１２と
が結合すると、前述の如く相互間に空隙が形成さ
れると共に、孔１１Ｂが突部１２Ｂで塞がれるよ
うになる。この状態で第１の金型１１に設けた図
示しない注入口からたとえば発泡スチロールなど
の成形材料を注入し、加熱するなどの処理を行な
つて成形を行なう。 When the first mold 11 and the second mold 12 are combined, a gap is formed between them as described above, and the hole 11B is closed by the protrusion 12B. In this state, a molding material such as foamed polystyrene is injected from an injection port (not shown) provided in the first mold 11, and processing such as heating is performed to perform molding.
この場合、突起１１ｃと突部１２Ｂが設けられ
ているため、その形状に対応して第４図ａに示す
ように成形品１３には段部１４Ａを有する孔１４
が形成される。 In this case, since the protrusion 11c and the protrusion 12B are provided, the molded product 13 has a hole 14 having a stepped portion 14A as shown in FIG.
is formed.
ところで成形材料の注入時に、突起１１ｃと突
部１２Ｂとの間に僅かでも隙間があれば、そこか
ら成形材料が孔１１Ｂ方向に侵入する。したがつ
てばり１５が生じることになるが、このばり１５
は第４図ａに示すように成形品１３の孔１４の段
部１４Ａに生じるので、孔１４の外側までは突出
することがない。このため成形品１３を梱包に用
いても、ばりがカートンボツクスに触れて折れ、
落下することもなくなり、したがつて製品に附着
して美観を損なうこともなくなる。またばりがあ
つてもそれを削り取る必要がなくなり、工数が削
減できる。さらにばりを防止するために金型の精
度を上げる必要もなくなり、金型のコストを下げ
ることができる。 By the way, when injecting the molding material, if there is even a slight gap between the protrusion 11c and the protrusion 12B, the molding material will enter from there in the direction of the hole 11B. Therefore, a burr 15 will be formed, but this burr 15
As shown in FIG. 4a, this occurs at the stepped portion 14A of the hole 14 of the molded product 13, so it does not protrude to the outside of the hole 14. Therefore, even if the molded product 13 is used for packaging, the burrs may touch the carton box and break.
It will no longer fall, and therefore it will no longer adhere to the product and spoil its aesthetic appearance. Furthermore, even if there is a burr, there is no need to remove it, reducing man-hours. Furthermore, there is no need to increase the precision of the mold to prevent burrs, and the cost of the mold can be reduced.
本考案はアルミニウム製の金型に限られるもの
ではなく、また発泡スチロール成形以外にも適用
できることはもちろんである。 The present invention is not limited to aluminum molds, and can of course be applied to molds other than styrofoam molding.
以上述べたように本考案によれば、たとえばり
が生じても成形品の表面には突出しないようにで
きるので、梱包用中子などの成形に用いて好適す
る成形用金型を提供することができる。 As described above, according to the present invention, even if warping occurs, it can be prevented from protruding from the surface of the molded product, so that it is possible to provide a molding die suitable for use in molding packaging cores, etc. I can do it.
第１図は従来の成形用金型を示す断面図、第２
図は第１図の金型で作られた成形品を示すもので
ａは断面図、ｂは平面図である。第３図は本考案
の一実施例による成形用金型を示す断面図、第４
図は第３図の金型で作られた成形品を示すもので
ａは断面図、ｂは平面図である。
１１……第１の金型、１１Ａ……凹状部、１１
Ｂ……孔、１１Ｃ……突起、１２……第２の金
型、１２Ａ……突状部、１２Ｂ……突部、１３…
…成形品、１４……孔、１４Ｂ……段部、１５…
…ばり。
Figure 1 is a sectional view showing a conventional molding die, Figure 2 is a sectional view showing a conventional molding die.
The figures show a molded product made with the mold shown in Fig. 1, in which a is a sectional view and b is a plan view. FIG. 3 is a sectional view showing a molding die according to an embodiment of the present invention;
The figure shows a molded product made with the mold shown in FIG. 3, with a being a sectional view and b being a plan view. 11...First mold, 11A...Concave portion, 11
B...hole, 11C...protrusion, 12...second mold, 12A...protrusion, 12B...protrusion, 13...
... Molded product, 14... Hole, 14B... Step part, 15...
...Burr.
Claims (1)
形成された環状の突起を有する第１の金型と、こ
の第１の金型と結合され上記第１の金型との間に
所望の形状の空隙を形成し上記孔と対向する位置
に設けられこの孔を塞ぐ突部を有する第２の金型
とからなり、上記第１および第２の金型の間に成
形材料を注入して成形される成形品に上記孔、突
起および突部によつて段部を有する孔を設けるこ
とを特徴とする成形用金型。 A desired shape is formed between a first mold having a hole on the surface for receiving the molding material and an annular protrusion formed around the periphery of the hole, and the first mold that is coupled to the first mold. and a second mold having a protrusion that is provided at a position facing the hole and closes the hole, and a molding material is injected between the first and second molds to form the mold. 1. A molding die, characterized in that a molded product is provided with a hole having a step formed by the hole, protrusion, and protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9639379U JPS6321383Y2 (en) | 1979-07-13 | 1979-07-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9639379U JPS6321383Y2 (en) | 1979-07-13 | 1979-07-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5614010U JPS5614010U (en) | 1981-02-06 |
| JPS6321383Y2 true JPS6321383Y2 (en) | 1988-06-13 |
Family
ID=29329222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9639379U Expired JPS6321383Y2 (en) | 1979-07-13 | 1979-07-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6321383Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5121672B2 (en) * | 2008-10-30 | 2013-01-16 | 積水化成品工業株式会社 | Mold for foam molding provided with a detachable insertion piece, molding method using the mold and foamed resin molded product |
-
1979
- 1979-07-13 JP JP9639379U patent/JPS6321383Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5614010U (en) | 1981-02-06 |
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