JPH06246833A - Method for molding rod body with ring groove at the center - Google Patents
Method for molding rod body with ring groove at the centerInfo
- Publication number
- JPH06246833A JPH06246833A JP6260793A JP6260793A JPH06246833A JP H06246833 A JPH06246833 A JP H06246833A JP 6260793 A JP6260793 A JP 6260793A JP 6260793 A JP6260793 A JP 6260793A JP H06246833 A JPH06246833 A JP H06246833A
- Authority
- JP
- Japan
- Prior art keywords
- ring groove
- center
- diameter
- projection
- small
- 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.)
- Pending
Links
Landscapes
- Mutual Connection Of Rods And Tubes (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、中央に環溝が形成され
た棒状体の成形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 a rod-shaped body having a ring groove formed in the center thereof.
【０００２】[0002]
【従来の技術】従来図５に示すように、環溝１０１が形
成された棒状体１０２が知られている。そしてその棒状
体１０２は一例として図６に示すような穿孔機１０３の
グリップとして使用されている。以下、簡単に穿孔機１
０３を説明すると、基台１０４の後方には押圧レバ−１
０５の上下動により穿孔刃が下降し、紙束に穿孔する穿
孔ユニット１０６が立設されている。又、前記押圧レバ
−１０５の上端には棒状体グリップ１０２が固定されて
いる。そしてそのグリップ１０２の中央部には環溝１０
１が形成されている。一方、前記基台１０４の前面には
先端がＵ字型に形成されたフック１０７が基台１０４に
対して収納可能に取り付けられている。そして、穿孔機
不使用時、押圧レバ−１０５を押し込み、フック１０７
をグリップ１０２の中央の環溝１０１に引っ掻けること
により収納する。2. Description of the Related Art Conventionally, as shown in FIG. 5, a rod-shaped body 102 having a ring groove 101 is known. The rod-shaped body 102 is used as a grip of a punching machine 103 as shown in FIG. 6 as an example. The following is a brief description of the punch 1
No. 03 will be described.
The punching blade is lowered by the vertical movement of 05, and the punching unit 106 for punching the sheet bundle is erected. A rod-shaped grip 102 is fixed to the upper end of the pressing lever 105. The ring groove 10 is provided at the center of the grip 102.
1 is formed. On the other hand, a hook 107 having a U-shaped tip is attached to the front surface of the base 104 so that the hook 107 can be stored in the base 104. Then, when the punch is not used, the pressing lever 105 is pushed in, and the hook 107
Is stored by scratching the ring groove 101 in the center of the grip 102.
【０００３】次いで、前記グリップ１０２の成形方法に
ついて説明する。先ず、射出成形により平坦な棒状体を
成形する。次いで、その平坦な棒状体を旋盤などの切削
機に固定し中央に環溝１０１を形成する。しかし、この
形成方法では切削機に固定し環溝１０１を形成しなけれ
ばならないので、作業工数が増し製造コストがかゝり大
量生産には不向きであった。そこで、射出成形における
金型を割型とし、棒状体成形時に同時に環溝１０１を形
成する方法も試された。Next, a method of molding the grip 102 will be described. First, a flat rod-shaped body is formed by injection molding. Next, the flat rod-like body is fixed to a cutting machine such as a lathe to form a ring groove 101 in the center. However, this forming method requires fixing to the cutting machine to form the annular groove 101, which increases the number of working steps and the manufacturing cost, which is not suitable for mass production. Therefore, a method has also been tried in which the mold for injection molding is a split mold, and the ring groove 101 is formed at the same time when the rod-shaped body is molded.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、金型
（キャビテイ−）の加工が複雑なものとなり、よって金
型の加工費用がかゝり、これもまた製造コストがかゝっ
てしまうという問題点があった。又、割型式の金型は合
わせ面である外周面軸方向にパ−テイングラインが生じ
てしまい、製品の価値を著しく損ねてしまうという問題
点があった。[Problems to be Solved by the Invention] However, the machining of the mold (cavity) is complicated, and thus the processing cost of the mold is high, and this is also a problem that the manufacturing cost is also high. was there. Further, the split mold has a problem in that a parting line is formed in the axial direction of the outer peripheral surface, which is the mating surface, and the value of the product is significantly impaired.
【０００５】[0005]
【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、円筒の一端面に同心の小径半円
弧突部を形成し、該円筒２個の小径半円弧突部の直径段
部を当接固着して環溝を形成する如くしたことを特徴と
するものである。SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems and to form a concentric small-diameter semi-circular projection on one end surface of a cylinder, and to form a small-diameter semi-circular projection of the two cylinders. It is characterized in that the diameter step portion is abutted and fixed to form an annular groove.
【０００６】[0006]
【実施例】次に図１乃至図５に示した本発明の一実施例
について詳細に説明する。円筒状の成形品１の一端面１
ａに同心小径環状突部を突設し、直径段部２を境にして
半分を薄肉状として、厚肉半円弧突部３と、薄肉半円弧
突部４を一体に形成し、夫々の外周を外方に向って円弧
面３ａ，４ａとしている。この様な円筒状の成形品１を
２個その直径段部２を当接して固着し、外周が凹面にな
った環溝５を中央に有する棒状体６を形成している。こ
の棒状体６は図５に示すような穿孔機のグリップに使用
される。環溝５の外周面を凹面にしたのは穿孔機のフッ
ク１０７がグリップ１０２に係止し易いようにするため
で必ずしも必要ではない。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, one embodiment of the present invention shown in FIGS. 1 to 5 will be described in detail. One end surface 1 of the cylindrical molded product 1
A concentric small-diameter annular projection is provided on a, and half is thinned with the diameter step portion 2 as a boundary, and a thick semicircular arc projection 3 and a thin semicircular arc projection 4 are integrally formed, and their outer circumferences are formed. Are arc surfaces 3a and 4a facing outward. Two such cylindrical molded articles 1 are fixed by abutting the diameter step portions 2 thereof, and a rod-shaped body 6 having a ring groove 5 having a concave outer periphery at the center is formed. This rod-shaped body 6 is used for a grip of a punching machine as shown in FIG. The outer peripheral surface of the annular groove 5 is made concave so that the hook 107 of the punching machine can be easily engaged with the grip 102, and is not always necessary.
【０００７】次に、前記成形品１を成形する金型につい
て図２、図３に従って説明する。成形機７の一側面に固
定されている可動側型板８の内側には樹脂が流入し、前
記肉厚半円弧突部３が形成される成形品９が形成されて
いる。又、前記成形機７の他側面には固定側型板の１つ
であるキャビテイプレ−ト１０が固定されている。そし
て、そのキャビテイプレ−ト１０の内側には、前記成形
品の本体部を成形する孔１１が形成されている。又、そ
の孔１１内にはコアピン１２が摺動自在に配置されてい
る。１３は成形品１をキャビテイプレ−ト１０より抜き
出すためのエジェクタピンである。Next, a mold for molding the molded product 1 will be described with reference to FIGS. A resin 9 flows into the inside of a movable side mold plate 8 fixed to one side surface of the molding machine 7 to form a molded product 9 in which the thick semicircular arc projection 3 is formed. A cavity plate 10, which is one of the stationary mold plates, is fixed to the other side surface of the molding machine 7. Inside the cavity plate 10, a hole 11 for forming the main body of the molded product is formed. A core pin 12 is slidably arranged in the hole 11. Reference numeral 13 is an ejector pin for pulling out the molded product 1 from the cavity plate 10.
【０００８】なお、穿孔機のグリップを取り上げ説明し
たが、中央部に環溝を必要とする棒状体であるならば、
種々のもの例えばドアの把手や手摺りなどに採用するこ
とができる。Although the grip of the punching machine has been taken up and described, if it is a rod-shaped body which requires an annular groove in the center,
It can be used for various things such as door handles and handrails.
【０００９】[0009]
【発明の効果】本発明は、円筒の一端面に同心の小径半
円弧突部を形成し、該円筒２個の小径半円弧突部の直径
段部を当接固着して環溝を形成する如くしたので、製造
コストが安く、外観見映えの良い中央に環溝を有する棒
状体を提供することができる。According to the present invention, concentric small-diameter semi-circular arc projections are formed on one end surface of a cylinder, and the diameter step portions of the two small-diameter semi-circular arc projections are abutted and fixed to form an annular groove. As a result, it is possible to provide a rod-shaped body having a ring groove in the center, which has a low manufacturing cost and a good appearance.
【図１】本発明の成形時の分割外観斜視図である。FIG. 1 is a perspective view of a split appearance of a molding according to the present invention.
【図２】本発明に用いる円筒状成形品の金型成形時正断
面図である。FIG. 2 is a front cross-sectional view of a cylindrical molded product used in the present invention at the time of mold molding.
【図３】図２のＡ部拡大図である。FIG. 3 is an enlarged view of part A of FIG.
【図４】本発明による棒状体の環溝部平面図である。FIG. 4 is a plan view of an annular groove portion of a rod-shaped body according to the present invention.
【図５】従来の中央に環溝を有するグリップの外観斜視
図である。FIG. 5 is an external perspective view of a conventional grip having an annular groove in the center.
【図６】図５のグリップを使用した穿孔機全体の外観斜
視図である。6 is an external perspective view of the entire punching machine using the grip of FIG.
１ 円筒状の成形品 １ａ 端面 ２ 直径段部 ３ 厚肉半円弧突部 ４ 薄肉半円弧突部 ５ 環溝 ６ 棒状体 1 Cylindrical molded product 1a End surface 2 Diameter step 3 Thick semi-circular arc projection 4 Thin semi-circular arc projection 5 Ring groove 6 Rod-shaped body
Claims (1)
形成し、該円筒２個の小径半円弧突部の直径段部を当接
固着して環溝を形成する如くした中央に環溝を有する棒
状体の成形方法。1. A small-diameter semi-circular arc concentric portion is formed concentrically on one end surface of a cylinder, and the diameter step portions of the two small-diameter semi-circular arc convex portions are abutted and fixed to form a ring groove at the center. A method for forming a rod-shaped body having an annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6260793A JPH06246833A (en) | 1993-02-26 | 1993-02-26 | Method for molding rod body with ring groove at the center |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6260793A JPH06246833A (en) | 1993-02-26 | 1993-02-26 | Method for molding rod body with ring groove at the center |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06246833A true JPH06246833A (en) | 1994-09-06 |
Family
ID=13205177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6260793A Pending JPH06246833A (en) | 1993-02-26 | 1993-02-26 | Method for molding rod body with ring groove at the center |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06246833A (en) |
-
1993
- 1993-02-26 JP JP6260793A patent/JPH06246833A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2003272900A1 (en) | Process for producing tubular ring with beads and die for use therein | |
| AU6073190A (en) | Procedure and machinery for the production of an assembled object | |
| JPH06246833A (en) | Method for molding rod body with ring groove at the center | |
| JP3407148B2 (en) | Cold forging method of spline shaft | |
| CN206510360U (en) | Novel rice washing basket injection mold | |
| JPS58107220A (en) | Manufacture of cylindrical sleeve from thin plate material | |
| JP2002001462A (en) | Pipe joint manufacturing method and pipe joint manufacturing apparatus | |
| JPH0639880A (en) | Mold for injection molding | |
| KR100454882B1 (en) | Manufacturing method of ball seat | |
| RU2302338C2 (en) | Mold for manufacture of the articles out of plastics | |
| JPH0110188Y2 (en) | ||
| CN215039658U (en) | Rubber coating injection mold for plastic folding washbasin for children | |
| JP2000167885A (en) | Method for molding hollow product and mold for molding | |
| JP6698790B1 (en) | Optical lens plastic injection mold structure | |
| KR100223946B1 (en) | Shell manufacture method of booster | |
| JP2008207478A (en) | Mold for molding for lenses, and its manufacturing process | |
| JP2005103594A (en) | Die for forging | |
| JPH11240049A (en) | Mold assembly for injection molding and its manufacture | |
| JPH05229354A (en) | Plastic fuel tank and its manufacture | |
| JPH0742681Y2 (en) | Mold | |
| JPH06238707A (en) | Manufacture of synthetic resin hollow product | |
| JPH0929381A (en) | Manufacture of gear and its sizing die | |
| JPS63145010A (en) | Injection mold | |
| JPH08310181A (en) | Barrel for writing implement or the like | |
| FR3128660B1 (en) | Method for manufacturing a model of at least one portion of a hand, mold particularly intended for implementing such a process, and training kit comprising at least one model obtained by such a manufacturing process |