JPS6230083B2 - - Google Patents
Info
- Publication number
- JPS6230083B2 JPS6230083B2 JP56012530A JP1253081A JPS6230083B2 JP S6230083 B2 JPS6230083 B2 JP S6230083B2 JP 56012530 A JP56012530 A JP 56012530A JP 1253081 A JP1253081 A JP 1253081A JP S6230083 B2 JPS6230083 B2 JP S6230083B2
- Authority
- JP
- Japan
- Prior art keywords
- gate
- molded part
- gate portion
- molded
- view
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/38—Cutting-off equipment for sprues or ingates
- B29C45/382—Cutting-off equipment for sprues or ingates disposed outside the mould
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
本発明は、合成樹脂からなる成型部品のゲート
部除去方法の改善に係り、とくに突出したゲート
部を打抜加工により除去するようにした成型部品
のゲート部除去方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improved method for removing a gate portion of a molded part made of synthetic resin, and particularly relates to a method for removing a gate portion of a molded part in which a protruding gate portion is removed by punching. It is something.
合成樹脂の粉末を所定の金型に注入して加圧成
型する成型部品には、前記合成樹脂の粉末を注入
するゲート部に不要な突出部が残ることは周知で
ある。この成型部品の突出したゲート部を除去す
る従来の方法を第１図および第２図に示す。すな
わち第１図は成型部品のゲート部をナイフ等で除
去する方法を説明するためのａは除去前、ｂは除
去後の側断面図、第２図はニツパで除去する方法
を示す斜視図で、１は成型部品、１１は前記成型
部品１に突出したゲート部、２は前記ゲート部１
１を切断除去するナイフ、１１′は前記ナイフ２
でゲート部１１を切断し残つたゲート部、３はニ
ツパである。 It is well known that in molded parts that are pressure-molded by injecting synthetic resin powder into a predetermined mold, unnecessary protrusions remain at the gate portion where the synthetic resin powder is injected. A conventional method for removing the protruding gate portion of a molded part is shown in FIGS. 1 and 2. That is, Fig. 1 is a side sectional view of a before removal, b is a side sectional view after removal, and Fig. 2 is a perspective view showing a method of removing the gate part with a nipper, to explain how to remove the gate part of a molded part with a knife or the like. , 1 is a molded part, 11 is a gate part protruding from the molded part 1, and 2 is the gate part 1
a knife 11' for cutting and removing the knife 2;
The gate portion 3 remaining after cutting the gate portion 11 is a nipper.
樹脂粉末を成型し、金型より取り出した成型部
品１には前述したとおり、不要なゲート部１１が
付着している。このゲート部１１は組立作業時に
支障を来すので、これを除去しなければならな
い。そこで前記ゲート部１１をナイフ２あるいは
ニツパ３等を用いてこれを除去するのであるが、
前記ナイフ２あるいはニツパ３で慎重に切除して
も若干のゲート部１１′が残り、完全に除去する
ことは困難であり、これを無理に除去しようとす
れば製品にキズや割れなどが発生する欠点があつ
た。 As described above, the unnecessary gate part 11 is attached to the molded part 1 which is formed by molding the resin powder and taken out from the mold. Since this gate portion 11 poses a problem during assembly work, it must be removed. Therefore, the gate portion 11 is removed using a knife 2 or a nipper 3.
Even if the gate part 11' is carefully removed using the knife 2 or the nipper 3, a small amount of the gate part 11' remains and it is difficult to remove it completely, and if you try to remove it by force, the product will be scratched or cracked. There were flaws.
本発明は、前記の欠点を解消すべくなされたも
ので、成型部品のゲート部を打抜加工により一挙
に除去することに着目したものである。簡単に述
べると本発明は、合成樹脂を加圧成形してなる成
型部品のゲート部除去方法において、前記成型部
品を突出したゲート部をダイスに設けた抜落し穴
に挿入し、該ゲート部と反対側より打抜きポンチ
により該ゲート部を打抜き除去することを特徴と
するものである。以下図面を参照しながら本発明
に係る成型部品のゲート部除去方法の実施例につ
いて詳細に説明する。 The present invention was made to eliminate the above-mentioned drawbacks, and focuses on removing the gate portion of a molded part at once by punching. Briefly stated, the present invention is a method for removing a gate part of a molded part made by pressure molding a synthetic resin, in which the gate part from which the molded part protrudes is inserted into a dropout hole provided in a die, and the gate part opposite to the gate part is inserted into a dropout hole provided in a die. This is characterized in that the gate portion is punched out from the side using a punch. DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for removing a gate portion of a molded part according to the present invention will be described in detail below with reference to the drawings.
第３図は、本発明の一実施例を説明するための
要部断面を示す正面図、第４図は打抜加工後の成
型部品を示し、ａは側断面図、ｂは平面図であつ
て、前図と同等の部分については同一符号を付し
て記した。４は工具鋼等からなり、抜落し穴４１
を貫通して設けてあるダイス、５は工具鋼等から
なりポンチガイド５１に上下動自在に嵌め込まれ
た打抜きポンチ、１２は打抜穴である。 FIG. 3 is a front view showing a cross section of essential parts for explaining one embodiment of the present invention, and FIG. 4 shows a molded part after punching, where a is a side sectional view and b is a plan view. The same parts as in the previous figure are designated by the same reference numerals. 4 is made of tool steel, etc., and has a dropout hole 41
5 is a punch made of tool steel or the like and fitted into a punch guide 51 so as to be vertically movable; 12 is a punching hole.
このような打抜加工工具のダイス４に成型部品
１の突出したゲート部１１を抜落し穴４１に嵌り
込むよう載置した状態で、ポンチガイド５１を下
降せしめ前記成型部品１を押圧して打抜きポンチ
５で打抜けば、前記成型部品１の突出したゲート
部１１が打抜き加工により除去されて、第４図に
示すような打抜穴１２が穿孔され、突出したゲー
ト部１１が完全に除去される。 With the protruding gate part 11 of the molded part 1 placed on the die 4 of such a punching tool so as to fit into the dropout hole 41, the punch guide 51 is lowered to press the molded part 1 and punch the punch. 5, the protruding gate portion 11 of the molded part 1 is removed by punching, a punched hole 12 as shown in FIG. 4 is punched, and the protruding gate portion 11 is completely removed. .
なお、打抜工具のポンチ５の外径は、成型部品
１に突出したゲート部１１の最大径よりも若干大
きくすることが好ましいが、さらに打抜穴が成型
部品１の使用上において支障を来さなければ、前
記打抜穴は大きい方が装置の軽量にも役立つ。 It is preferable that the outer diameter of the punch 5 of the punching tool be slightly larger than the maximum diameter of the gate portion 11 protruding into the molded part 1; Otherwise, the larger the punched hole is, the more it helps to reduce the weight of the device.
以上の説明から明らかなように、本発明に係る
成型部品のゲート部除去方法によれば、簡単な打
抜工具で製品にキズ、割れ等不良の発生が減少
し、良品率が向上するとともに、作業能率も向上
するのでコストダウンに寄与するところが大であ
る。 As is clear from the above explanation, according to the method for removing the gate portion of a molded part according to the present invention, the occurrence of defects such as scratches and cracks on the product is reduced using a simple punching tool, and the yield rate is improved. It also improves work efficiency, which greatly contributes to cost reduction.
第１図は成型部品のゲート部をナイフで除去す
る方法を説明するためのａは除去前、ｂは除去後
の側断面図、第２図はニツパで除去する方法を示
す斜視図、第３図は本発明に係る成型部品のゲー
ト部除去方法の一実施例を説明するための要部断
面を示す正面図、第４図は打抜加工後の成型部品
を示し、ａは側断面図、ｂは平面図である。
１：成型部品、４：ダイス、５：ポンチ、１１
および１１′：ゲート部、１２：打抜穴、４１：
抜落し穴、５１：ポンチガイド。
Fig. 1 is a side sectional view of a before removal and b is a side sectional view after removal to explain how to remove the gate part of a molded part with a knife, Fig. 2 is a perspective view showing a method of removing with a nipper, and Fig. 3 The figure is a front view showing a cross section of a main part for explaining one embodiment of the method for removing a gate part of a molded part according to the present invention, FIG. 4 shows the molded part after punching, a is a side sectional view, b is a plan view. 1: Molded parts, 4: Dice, 5: Punch, 11
and 11': gate part, 12: punched hole, 41:
Pithole, 51: Punch guide.
Claims (1)
ート部１１の除去方法において、前記成型部品１
の突出したゲート部１１を、ダイス４に設けた抜
落し穴４１に挿入し、該ゲート部１１と反対側よ
り打抜きポンチ５により、該ゲート部１１を打抜
き除去することを特徴とする成型部品のゲート部
除去方法。1 In a method for removing a gate portion 11 of a molded part 1 formed by pressure molding a synthetic resin, the molded part 1
A gate of a molded part characterized in that a protruding gate part 11 is inserted into a dropout hole 41 provided in a die 4, and the gate part 11 is punched out from the opposite side of the gate part 11 with a punch 5. Part removal method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1253081A JPS57126636A (en) | 1981-01-30 | 1981-01-30 | Removal of gate of molded object |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1253081A JPS57126636A (en) | 1981-01-30 | 1981-01-30 | Removal of gate of molded object |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57126636A JPS57126636A (en) | 1982-08-06 |
| JPS6230083B2 true JPS6230083B2 (en) | 1987-06-30 |
Family
ID=11807880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1253081A Granted JPS57126636A (en) | 1981-01-30 | 1981-01-30 | Removal of gate of molded object |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57126636A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5469167A (en) * | 1977-11-14 | 1979-06-02 | Kamaya Kagaku Kogyo Co Ltd | Mold apparatus |
-
1981
- 1981-01-30 JP JP1253081A patent/JPS57126636A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57126636A (en) | 1982-08-06 |
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