JP2541751B2 - Method for forming through holes or recesses in synthetic resin products - Google Patents
Method for forming through holes or recesses in synthetic resin productsInfo
- Publication number
- JP2541751B2 JP2541751B2 JP5084919A JP8491993A JP2541751B2 JP 2541751 B2 JP2541751 B2 JP 2541751B2 JP 5084919 A JP5084919 A JP 5084919A JP 8491993 A JP8491993 A JP 8491993A JP 2541751 B2 JP2541751 B2 JP 2541751B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- product
- synthetic resin
- hole
- forming
- 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
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は所望の合成樹脂製品に貫
通孔或いは凹部を形成する方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming through holes or recesses in a desired synthetic resin product.
【０００２】[0002]
【従来の技術】従来、この種の工法としては中子によっ
て形成するものであった。2. Description of the Related Art Conventionally, a core has been used as a construction method of this kind.
【０００３】したがって、金型の設計が複雑となると共
にその操作も熟練を要するものとなって、成形品の設計
に一定の制限があった。Therefore, the design of the mold becomes complicated and its operation requires skill, and there is a certain limitation in the design of the molded product.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、本発明
は簡易な方法で、且つ少量多種生産でも多量生産でもど
ちらでも対応が可能な方法を開発したものである。However, the present invention has developed a method which is a simple method and is capable of handling both small-volume multi-production and large-volume production.
【０００５】[0005]
【課題を解決しようとする手段】次に、本発明について
説明する。The present invention will be described below.
【０００６】合成樹脂製品に貫通孔或いは凹部を形成す
る方法であって、一対の金型とその外部に備えられた回
動杆からなり、前記製品の貫通孔或いは凹部に対応する
該金型部位には該回動杆が金型キャビティ内の一部に進
退自在とされる杆挿入孔が設けられてなる金型装置を用
い、型締めすると共に回動杆を回動させて杆挿入孔を通
して金型キャビティ内に進入させた後、合成樹脂原料を
金型キャビティに充填して製品を成形し、次いで、回動
杆を回動させて金型キャビティ外へ退出させると共に型
開きして製品を取り出すことを特徴とする。A method for forming a through hole or a recess in a synthetic resin product, comprising a pair of molds and a rotating rod provided outside the mold, the mold portion corresponding to the through hole or the recess of the product. Is a mold device having a rod insertion hole that allows the rotary rod to move back and forth in a part of the mold cavity. The mold is clamped and the rotary rod is rotated to pass through the rod insertion hole. After entering the mold cavity, the synthetic resin raw material is filled into the mold cavity to mold the product, and then the rotating rod is rotated to move out of the mold cavity and the product is opened to open the product. Characterized by taking out.
【０００７】[0007]
【作用】本発明は以上のような方法であるから、従来の
ように中子の保持を金型に設けるものではなく、金型の
外部に製品の貫通孔或いは凹部の形成に必要な形状の回
動自在な回動杆を金型キャビティの一部に進退自在に設
けものであるから、金型の設計も容易となり、従って、
操作も熟練を要さず、作業効率が高くなるものである。Since the present invention is the method described above, the core is not held in the mold as in the conventional case, but the shape required for forming a through hole or a recess of the product is provided outside the mold. Since a rotatable rod is provided in a part of the mold cavity so that it can move back and forth, the mold can be easily designed, and therefore,
The operation does not require skill and the work efficiency is improved.
【０００８】[0008]
【実施例】次に、本発明について図面に基づいて説明す
る。図面に示すように合成樹脂製品を発泡合成樹脂製の
容器１として説明すると、該容器１の蓋２に把持部３を
成形する場合、本発明に用いる金型装置は、上金型４と
下金型５とからなる一対の金型と、その外部に備えられ
た回動杆８とからなり、把持部３を成形する上金型４の
前記把持部３を構成する貫通孔６に対応する部位の一方
側に、前記貫通孔６と同形の杆挿入孔７を設け、一方、
回動自在な回動杆８を前記上金型４の杆挿入孔７を通過
し、容器１の蓋２の貫通孔６に貫入でき得る金型キャビ
ティ内の位置に進退自在に設け、上金型４と下金型５と
を所定の位置に型締めの状態に設置すると共に、回動杆
８を回動させて、前記上金型４の杆挿入孔７を通過し、
容器１の貫通孔６に対応する金型キャビティ内の位置に
貫入させた後、予備発泡樹脂を金型キャビティに充填し
て発泡成形し、次いで、回動杆８を回動させて、上金型
４及び下金型５の外部に位置させると共に、これら金型
４，５を型開きして、製品を取り出す。Next, the present invention will be described with reference to the drawings. As shown in the drawings, the synthetic resin product will be described as a container 1 made of foamed synthetic resin. When the grip portion 3 is molded on the lid 2 of the container 1, the mold device used in the present invention includes an upper mold 4 and a lower mold 4. It is composed of a pair of dies including a die 5 and a rotating rod 8 provided outside thereof, and corresponds to a through hole 6 that constitutes the grip 3 of the upper die 4 that molds the grip 3. A rod insertion hole 7 having the same shape as the through hole 6 is provided on one side of the portion,
A rotatable rod 8 is provided to pass through the rod insertion hole 7 of the upper die 4 and to be able to advance and retreat at a position within the die cavity where it can penetrate the through hole 6 of the lid 2 of the container 1. The mold 4 and the lower mold 5 are installed at predetermined positions in a clamped state, and the rotary rod 8 is rotated to pass through the rod insertion hole 7 of the upper mold 4,
After penetrating into a position in the mold cavity corresponding to the through hole 6 of the container 1, the mold cavity is filled with pre-foamed resin for foam molding, and then the rotary rod 8 is rotated to move the upper metal mold. The product is taken out by placing the molds 4 and 5 outside the mold 4 and the lower mold 5 and opening the molds 4 and 5.
【０００９】実施例においては、一個の回動杆を備えた
金型装置を用いた例を示したが、回動杆の数、位置及び
形状等は限定されるものではなく、例えば、前記実施例
と同一形状の回動杆を相対向させて接離可能に一対設け
て成形することもできるし、異なる形状の回動杆を複数
個設けて製品に異なる形状の複数個の貫通孔を形成する
こともできる。In the embodiment, an example in which a mold device having one rotating rod is used is shown, but the number, position, shape, etc. of the rotating rod are not limited, and for example, the above-mentioned embodiment is used. It is also possible to form a pair of rotating rods having the same shape as the example so that they face each other so that they can come in contact with and separate from each other, or to form a plurality of rotating rods of different shapes to form a plurality of through holes of different shapes in the product. You can also do it.
【００１０】[0010]
【発明の効果】本発明は以上のような方法であるから、
従来のように中子の保持を金型に設けるものではなく、
金型の外部に製品の貫通孔或いは凹部の形成に必要な形
状の回動自在な回動杆を金型キャビティ内に進退自在に
設けものであるから、金型の設計も容易となり、従っ
て、その操作も熟練を要さず、作業効率が高くなるもの
である。Since the present invention is the method as described above,
Unlike the conventional method, the core is not held in the mold,
Since a rotatable pivoting rod having a shape required for forming a through hole or a recess of a product is provided outside the mold so as to be movable back and forth in the mold cavity, the design of the mold is facilitated, and therefore, The operation does not require skill and the work efficiency is improved.
【図１】本発明の一工程の実施例を示す説明的断面図。FIG. 1 is an explanatory sectional view showing an embodiment of one step of the present invention.
【図２】本発明の他の工程を示す実施例の説明的断面
図。FIG. 2 is an explanatory sectional view of an example showing another step of the present invention.
【図３】同本発明の同実施例よって成形された製品の斜
視図。FIG. 3 is a perspective view of a product molded according to the same embodiment of the present invention.
１・・・容器 ２・・・蓋 ３・・・把持部 ４・・・上金型 ５・・・下金型 ６・・・貫通孔 ７・・・杆挿入孔 ８・・・回動杆 DESCRIPTION OF SYMBOLS 1 ... Container 2 ... Lid 3 ... Grip 4 ... Upper mold 5 ... Lower mold 6 ... Through hole 7 ... Rod insertion hole 8 ... Rotating rod
Claims (1)
る方法であって、一対の金型とその外部に備えられた回
動杆からなり、前記製品の貫通孔或いは凹部に対応する
該金型部位には該回動杆が金型キャビティ内の一部に進
退自在とされる杆挿入孔が設けられてなる金型装置を用
い、型締めすると共に回動杆を回動させて杆挿入孔を通
して金型キャビティ内に進入させた後、合成樹脂原料を
金型キャビティに充填して製品を成形し、次いで、回動
杆を回動させて金型キャビティ外へ退出させると共に型
開きして製品を取り出すことを特徴とする合成樹脂製品
に貫通孔或いは凹部を形成する方法。1. A method for forming a through hole or a recess in a synthetic resin product, the method comprising a pair of molds and a rotating rod provided outside the mold and corresponding to the through hole or the recess of the product. A mold device is used in which a rotating rod is provided in a part of the mold cavity to allow the rotating rod to move back and forth, and the mold is clamped and the rotating rod is rotated to insert the rod. After entering the mold cavity through the hole, fill the mold cavity with synthetic resin raw material to mold the product, then rotate the rotating rod to move it out of the mold cavity and open the mold. A method of forming a through hole or a recess in a synthetic resin product, which is characterized in that the product is taken out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5084919A JP2541751B2 (en) | 1993-04-12 | 1993-04-12 | Method for forming through holes or recesses in synthetic resin products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5084919A JP2541751B2 (en) | 1993-04-12 | 1993-04-12 | Method for forming through holes or recesses in synthetic resin products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06297476A JPH06297476A (en) | 1994-10-25 |
| JP2541751B2 true JP2541751B2 (en) | 1996-10-09 |
Family
ID=13844126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5084919A Expired - Fee Related JP2541751B2 (en) | 1993-04-12 | 1993-04-12 | Method for forming through holes or recesses in synthetic resin products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2541751B2 (en) |
-
1993
- 1993-04-12 JP JP5084919A patent/JP2541751B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06297476A (en) | 1994-10-25 |
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