JP2949804B2 - Gate cutting method for injection molded products - Google Patents
Gate cutting method for injection molded productsInfo
- Publication number
- JP2949804B2 JP2949804B2 JP20339290A JP20339290A JP2949804B2 JP 2949804 B2 JP2949804 B2 JP 2949804B2 JP 20339290 A JP20339290 A JP 20339290A JP 20339290 A JP20339290 A JP 20339290A JP 2949804 B2 JP2949804 B2 JP 2949804B2
- Authority
- JP
- Japan
- Prior art keywords
- gate
- molded product
- injection
- product
- cut
- 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)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は金型より取り出された射出成形品に連結され
ているランナーをカッターにより分離する方法に関す
る。Description: TECHNICAL FIELD The present invention relates to a method for separating a runner connected to an injection molded product taken out of a mold by a cutter.
（従来技術） 従来第５図乃至第７図に示すように、金型より取り出
された成形品１をゲートカット装置２に載置し、カッタ
ー３でゲート４を切断し、製品５とランナー６を分離す
るゲートカット方法が知られている。(Prior Art) Conventionally, as shown in FIGS. 5 to 7, a molded product 1 taken out of a die is placed on a gate cutting device 2, a gate 4 is cut by a cutter 3, and a product 5 and a runner 6 are cut off. There is known a gate cut method for separating the two.
また第７図に示すように、成形品11のスプルー11aを
把持手段12により把持し、カッター13でゲート14を切断
し、製品15とランナー16とを分離する装置も知られてい
る。Further, as shown in FIG. 7, there is also known an apparatus in which a sprue 11a of a molded article 11 is gripped by gripping means 12, a gate 14 is cut by a cutter 13, and a product 15 and a runner 16 are separated.
（発明が解決しようとする課題） 上記従来技術に於て前者は第７図に示すように、ゲー
ト４を切断する前にランナー６が撓んでしまいゲート４
を正確に切断できないばかりでなく、製品５が傾き、そ
の傾いた製品５にカッター３が当接し、製品５を傷付け
てしまうという問題点があった。(Problems to be Solved by the Invention) As shown in FIG. 7, the former in the above prior art is such that the runner 6 is bent before the gate 4 is cut, and
Not only cannot be cut accurately, but also the product 5 is tilted, and the cutter 3 comes into contact with the tilted product 5 to damage the product 5.
また後者においては、カッター13をゲート14に当接さ
せ切断するためかなりの力がかゝり、さらにスプルー11
aとゲート14の距離があるためモーメントが大きくな
り、把持手段12で把持しきれずに成形品１が回転してし
まったり、該回転により製品15とカッター13が接触し、
製品15に傷を付けてしまうという問題点があった。In the latter case, considerable force is applied to cut the cutter 13 by contacting the gate 13 with the gate 14, and furthermore, the sprue 11
Due to the distance between a and the gate 14, the moment increases, and the molded product 1 rotates without being fully gripped by the gripping means 12, or the product 15 comes into contact with the cutter 13 due to the rotation,
There was a problem that the product 15 was damaged.
（課題を解決するための手段） 本発明は上記問題点を解決することを目的とし、あら
かじめ射出成形品に突起を形成し、該射出成形品を金型
より取り出し、前記突起をゲートカッター装置の凹部に
嵌合載置し、カッターにより射出成形品よりランナーを
分離する如くしたことを特徴とするものである。(Means for Solving the Problems) An object of the present invention is to solve the above-mentioned problems, and to form a projection on an injection-molded product in advance, take out the injection-molded product from a mold, and attach the projection to a gate cutter. The runner is fitted and mounted in the recess, and the runner is separated from the injection molded product by a cutter.
（実施例） 次に第１図乃至第４図に示した実施例に基づいて具体
的に説明する。(Example) Next, a specific description will be given based on the example shown in FIGS. 1 to 4.
最初に射出成形する際に、ランナー23のゲート24近傍
部に突起25が形成されるよう金型を設計する。該金型に
より射出成形された成形品26はランナー23のゲート24近
傍部に突起25が形成されている。At the time of the first injection molding, the mold is designed so that the projection 25 is formed near the gate 24 of the runner 23. In a molded product 26 injection-molded by the mold, a projection 25 is formed near the gate 24 of the runner 23.
次に金型より取り出した成形品26をゲートカット装置
27に載置する。このゲートカット装置27には前記成形品
26のランナー23に形成されている突起25と対応した位置
に突起25が挿入固定される孔28が形成されている。成形
品26載置の際、突起25を孔28に挿入し固定する（第２図
参照）。これで成形品26のゲートカット装置27への位置
決めが完了する。Next, the molded product 26 taken out from the mold is gate-cut
Place on 27. The gate cut device 27 includes the molded product
Holes 28 are formed at positions corresponding to the protrusions 25 formed on the 26 runners 23, into which the protrusions 25 are inserted and fixed. When the molded product 26 is placed, the projection 25 is inserted into the hole 28 and fixed (see FIG. 2). Thus, the positioning of the molded product 26 in the gate cutting device 27 is completed.
位置決め完了後、カッター29を作動させゲート24を切
断し、製品30とランナー23とを分離する。After the positioning is completed, the cutter 29 is operated to cut the gate 24, and the product 30 and the runner 23 are separated.
（効 果） 本発明によると、あらかじめ射出成形品に突起を形成
し、該射出成形品を金型より取り出し、前記突起をゲー
トカッター装置の凹部に嵌合載置し、カッターにより射
出成形品よりランナーを分離する如くなっているので、
製品を傷めずに確実にゲートカットすることができる。(Effects) According to the present invention, a projection is formed on an injection-molded product in advance, the injection-molded product is removed from a mold, and the projection is fitted and mounted in a recess of a gate cutter device. As it is designed to separate runners,
The gate can be cut reliably without damaging the product.
なお、ランナーに孔を形成しゲートカット装置に凸部
を形成してもよい。In addition, you may form a hole in a runner and may form a convex part in a gate cut device.
第１図は本発明方法により射出成形された成形品の一部
平面図、第２図は同正面図、第３図は第１図のＡ−Ａ正
断面図、第４図は本発明方法によるゲートカット時の全
体平面図、第５図は従来方法により射出成形された成形
品の一部平面図、第６図は第５図の成形品ゲートカット
時の正面部分図、第７図は第６図の成形品が撓んだ時の
正面部分図、第８図は従来方法によるゲートカット時の
全体平面図である。 23……ランナー、24……ゲート 25……突起、26……成形品 27……ゲートカット装置、28……孔 29……カッター、30……製品FIG. 1 is a partial plan view of a molded article injection-molded according to the method of the present invention, FIG. 2 is a front view of the same, FIG. 3 is a sectional front view taken along the line AA of FIG. 1, and FIG. 5 is a partial plan view of a molded product injection-molded by the conventional method, FIG. 6 is a partial front view of the molded product in FIG. 5 when the gate is cut, and FIG. FIG. 6 is a partial front view when the molded product is bent, and FIG. 8 is an overall plan view when the gate is cut by the conventional method. 23 ... Runner, 24 ... Gate 25 ... Protrusion, 26 ... Molded product 27 ... Gate cutting device, 28 ... Hole 29 ... Cutter, 30 ... Product
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭60−56522（ＪＰ，Ａ) 特開 昭59−79740（ＪＰ，Ａ) 特開 昭57−138926（ＪＰ，Ａ) 実開 昭56−104925（ＪＰ，Ｕ) 実開 平２−23993（ＪＰ，Ｕ) 実開 平２−9524（ＪＰ，Ｕ) 実開 昭63−192016（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) B29C 45/26 - 45/44 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-56522 (JP, A) JP-A-59-79740 (JP, A) JP-A-57-138926 (JP, A) 104925 (JP, U) JP-A-2-23993 (JP, U) JP-A-2-9524 (JP, U) JP-A 63-192016 (JP, U) (58) Fields surveyed (Int. Cl. 6 , DB name) B29C 45/26-45/44
Claims (1)
射出成形品を金型より取り出し、前記突起をゲートカッ
ター装置の凹部に嵌合載置し、カッターにより射出成形
品よりランナーを分離する如くなした射出成形品のゲー
トカット方法。1. A projection is formed on an injection-molded product in advance, the injection-molded product is removed from a mold, and the projection is fitted and mounted in a recess of a gate cutter device, and a runner is separated from the injection-molded product by a cutter. Gate cutting method for injection molded products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20339290A JP2949804B2 (en) | 1990-07-31 | 1990-07-31 | Gate cutting method for injection molded products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20339290A JP2949804B2 (en) | 1990-07-31 | 1990-07-31 | Gate cutting method for injection molded products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0486230A JPH0486230A (en) | 1992-03-18 |
| JP2949804B2 true JP2949804B2 (en) | 1999-09-20 |
Family
ID=16473284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20339290A Expired - Lifetime JP2949804B2 (en) | 1990-07-31 | 1990-07-31 | Gate cutting method for injection molded products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2949804B2 (en) |
-
1990
- 1990-07-31 JP JP20339290A patent/JP2949804B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0486230A (en) | 1992-03-18 |
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