JP2011093001A

JP2011093001A - Blanking blade

Info

Publication number: JP2011093001A
Application number: JP2008210123A
Authority: JP
Inventors: Hiromasa Takahashi; 広真高橋; Mitsuhiro Takahashi; 光広高橋
Original assignee: TAKAHASHI KEISEI KK; Takahashi Keisei Corp
Current assignee: TAKAHASHI KEISEI KK; Takahashi Keisei Corp
Priority date: 2008-08-18
Filing date: 2008-08-18
Publication date: 2011-05-12

Abstract

<P>PROBLEM TO BE SOLVED: To provide a blanking die capable of carrying out fine exact blanking treatment when blanking a three-dimensional formed product (a curved surface molded product and a folding molded product) formed of a sheet and a film, a press molded product, and an injection molded product along a three-dimensional contour. <P>SOLUTION: A blanking blade 1 is used for the blanking die arranged between upper and lower surface plates for blanking a three-dimensional formed body. The blanking blade includes a blade at a tip of a metal block, has the height of the tip of the blade with different heights depending on a portion of an cutting edge, and is formed by cutting stroke. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、上下定盤間に配置されて立体形成体を打ち抜くための打ち抜き型に使用する打ち抜き刃に関し、シートやフィルムからなる立体形成品（曲面成形品，折り曲げ成形品）やプレス成形品や射出成型品を、立体形状の輪郭に沿って打ち抜くに際して、微細かつ正確な打ち抜き処理ができる打ち抜き刃に関する。 The present invention relates to a punching blade that is disposed between upper and lower surface plates and used for a punching die for punching a three-dimensionally formed body, and relates to a three-dimensionally formed product (curved molded product, bent molded product), a press molded product, and The present invention relates to a punching blade capable of performing a fine and accurate punching process when an injection molded product is punched along a contour of a three-dimensional shape.

従来、プラスチック等からなる立体成形品を抜き型により打ち抜く技術が知られている（特許文献１参照）。この種の技術では、図６（Ａ）に示すように、帯状刃（トムソン刃）８１に刃先ｅと反対側（峰Ｐ側）から楔形状（逆扇状）の切り込み８２を入れる。そして、図６（Ｂ）に示すように、この帯状刃８１を、刃先ｅと峰Ｐとが同心の弧となるように湾曲させて基台８３に取り付ける。受け部材８４にも、帯状刃８１の刃先ｅの湾曲形状に対応する凹凸を形成しておく。そして、基台８３を下定盤８５に、受け部材８４を上定盤８６に取り付け、打ち抜き対象の曲面成形品や折り曲げ成形品の打ち抜きを行なう。
特開２００６−１５４４５号公報 Conventionally, a technique of punching a three-dimensional molded product made of plastic or the like with a punching die is known (see Patent Document 1). In this type of technique, as shown in FIG. 6A, a wedge-shaped (reverse fan-shaped) cut 82 is made in a band-shaped blade (Thomson blade) 81 from the side opposite to the blade edge e (peak P side). Then, as shown in FIG. 6 (B), the belt-like blade 81 is bent and attached to the base 83 so that the cutting edge e and the peak P form a concentric arc. Concavities and convexities corresponding to the curved shape of the cutting edge e of the band-shaped blade 81 are also formed on the receiving member 84. Then, the base 83 is attached to the lower surface plate 85 and the receiving member 84 is attached to the upper surface plate 86, and the curved surface molded product or the bent molded product to be punched is punched.
JP 2006-15445 A

しかし、上記の打ち抜き技術では、帯状刃８１が取り付けられた基台８３と、受け部材８５との位置調整が容易ではないため、打ち抜き対象を正確な形状に切断できなかったり、打ち抜かれない部分が生じたりする。このため、微細な打ち抜きを当初から断念せざる得ないという問題がある。 However, in the above-described punching technique, it is not easy to adjust the position of the base 83 to which the belt-like blade 81 is attached and the receiving member 85, and therefore, the punching target cannot be cut into an accurate shape, or a portion that cannot be punched is present. It occurs. For this reason, there is a problem that fine punching has to be abandoned from the beginning.

また、上記の打ち抜き技術では、帯状刃８１は細かく折り曲げることができないことから、微細な打ち抜きができないし、切り込み８２のために、帯状刃８１全体が変形していまい、正確な打ち抜きができないという問題もある。 Further, with the above-described punching technique, since the strip blade 81 cannot be bent finely, it cannot be finely punched, and the entire strip blade 81 is deformed because of the cut 82, and accurate punching cannot be performed. There is also.

本発明の目的は、シートやフィルムからなる立体形成品（曲面成形品，折り曲げ成形品）やプレス成形品や射出成型品を、立体形状の輪郭に沿って打ち抜くに際して、微細かつ正確な打ち抜き処理ができる打ち抜き型を提供することにある。 The object of the present invention is to perform a fine and accurate punching process when punching a three-dimensional molded product (curved molded product, bent molded product), a press-molded product, or an injection molded product made of a sheet or film along a contour of a three-dimensional shape. It is to provide a punching die that can be used.

本発明は（１），（２）を要旨とする。
（１）上下定盤間に配置されて立体形成体を打ち抜くための打ち抜き型に使用する打ち抜き刃であって、金属ブロックの先端に刃を備え、当該刃の先端高さが、当該刃先の部位によって異なる高さを持つ、削り出しにより形成されたことを特徴とする打ち抜き刃。 The gist of the present invention is (1) and (2).
(1) A punching blade that is disposed between upper and lower surface plates and is used for a punching die for punching a three-dimensionally formed body. The punching blade includes a blade at the tip of a metal block, and the tip height of the blade is a part of the blade tip. A punching blade that has a different height depending on the shape of the punching blade.

（２）前記金属ブロックには、帯状刃が装着されるスリットを備え、前記スリットには刃の先端が前記金属ブロックに形成された刃の刃先端に連続する帯状刃が装着されていることを特徴とする（１）に記載の打ち抜き刃。 (2) The metal block is provided with a slit on which a band-shaped blade is mounted, and the slit is mounted with a band-shaped blade whose blade tip is continuous with the blade tip of the blade formed on the metal block. The punching blade according to (1), which is characterized.

シートやフィルムからなる立体形成品（曲面成形品，折り曲げ成形品）やプレス成形品や射出成型品を、立体形状の輪郭に沿って打ち抜くに際して、微細かつ正確に打ち抜くことができる。 When a three-dimensionally formed product (curved surface molded product, bent molded product), a press-molded product, or an injection molded product made of a sheet or a film is punched along a contour of a three-dimensional shape, it can be punched finely and accurately.

本発明の実施形態を、図１の打ち抜き刃斜視図、図２の打ち抜き型斜視図、図３（Ａ）の抜き型ユニットの側面図、図３（Ｂ）の抜き型ユニットの平面図により説明する。 The embodiment of the present invention will be described with reference to a punching blade perspective view of FIG. 1, a punching mold perspective view of FIG. 2, a side view of a punching unit of FIG. 3A, and a plan view of the punching unit of FIG. To do.

図１に示すように、打ち抜き刃１は、金属ブロックを削り出しにより形成したブロック刃１１と、曲げ加工された帯状刃１２とからなる。ブロック刃１１には、スリットＳＬ１，ＳＬ２が形成され、コ字形状に折り曲げられた帯状刃１２の２つの端部が挿入されている。
打ち抜き刃１において、ブロック刃１１の刃の高さは部位によって異なり、帯状刃１２の刃の高さは何れの部位でも同じである。スリットＳＬ１，ＳＬ２部分のブロック刃１１刃の高さと、帯状刃１２の刃の高さとは同じであり、両刃は連続するように構成されている。 As shown in FIG. 1, the punching blade 1 includes a block blade 11 formed by cutting a metal block and a band-shaped blade 12 that is bent. In the block blade 11, slits SL1 and SL2 are formed, and two end portions of a band-shaped blade 12 bent into a U-shape are inserted.
In the punching blade 1, the height of the blade of the block blade 11 differs depending on the part, and the height of the blade of the strip blade 12 is the same in any part. The heights of the block blades 11 at the slits SL1 and SL2 are the same as the heights of the strip blades 12, and the two blades are configured to be continuous.

図１に示す打ち抜き刃１は、図２に示すように、合板２に装着され、抜き型３が構成される。 A punching blade 1 shown in FIG. 1 is attached to a plywood 2 as shown in FIG.

抜き型ユニットは、図２の抜き型３と、図３（Ａ），（Ｂ）の側面図および平面図に示す受け部材４とにより構成される。 The punching die unit is composed of the punching die 3 in FIG. 2 and the receiving member 4 shown in the side and plan views of FIGS. 3 (A) and 3 (B).

図３（Ａ），（Ｂ）において、受け部材４は、図１，図２に示した打ち抜き刃１の先端（すなわち、ブロック刃１１の先端と帯状刃１２の先端）に対応する曲面Ｓを有している。また、受け部材４には軽量化のために受け面Ｓの内側には溝Ｇが形成されている。なお、受け面Ｓの刃先（打ち抜き刃１の先端）ｅが当接する部分は、銅・軟鉄・真鍮等の金属・合金（打ち抜き刃１よりも柔らかい金属）により形成することができ、たとえば、刃先ｅに当接する部分を交換可能にしておくことができる。 3 (A) and 3 (B), the receiving member 4 has a curved surface S corresponding to the tip of the punching blade 1 shown in FIGS. 1 and 2 (that is, the tip of the block blade 11 and the tip of the strip blade 12). Have. Further, a groove G is formed inside the receiving surface S in the receiving member 4 for weight reduction. In addition, the part with which the cutting edge (tip of the punching blade 1) e of the receiving surface S abuts can be formed of a metal or an alloy (metal softer than the punching blade 1) such as copper, soft iron, or brass. It is possible to replace the part that abuts on e.

抜き型３と受け部材４とからなる抜き型ユニットは、図４に示すように、下定盤５１，上定盤５２にセットされて、シート等（図４ではＭＰで示す）の打ち抜きが行なわれる。 As shown in FIG. 4, the punching die unit composed of the punching die 3 and the receiving member 4 is set on the lower surface plate 51 and the upper surface plate 52, and a sheet or the like (indicated by MP in FIG. 4) is punched out. .

なお、本発明の打ち抜き対象は、シート、フィルム状からなる立体成形品であってもよいし、厚みを持つ立体成形品（射出成型品やプレス成形品）であってもよい。 The punching target of the present invention may be a three-dimensional molded product made of a sheet or a film, or a three-dimensional molded product having a thickness (an injection molded product or a press molded product).

図５に抜き型３と受け部材４とに位置調整を施した実施形態を示す。図５では、抜き型３は治具６１に取り付けられ、受け部材４は治具６２に取り付けられている。治具６１と治具６２とは、ガイド機構７により位置調整されている。ガイド機構７は、ガイド管７１とガイドロッド７２により構成されている。 FIG. 5 shows an embodiment in which the die 3 and the receiving member 4 are adjusted in position. In FIG. 5, the punching die 3 is attached to a jig 61, and the receiving member 4 is attached to a jig 62. The positions of the jig 61 and the jig 62 are adjusted by the guide mechanism 7. The guide mechanism 7 includes a guide tube 71 and a guide rod 72.

上記の実施形態では、抜き型３は下定盤５１側に取り付けられ、受け部材４は上定盤５２側に取り付けられている。抜き型３を上定盤５２側に取り付け、受け部材４を下定盤５１側に取り付けるようにしてもよい。
上記実施形態では、抜き刃１をブロック刃と帯状刃とにより構成したが、ブロック刃のみにより抜き刃を構成することができる。 In the above embodiment, the punching die 3 is attached to the lower surface plate 51 side, and the receiving member 4 is attached to the upper surface plate 52 side. The punching die 3 may be attached to the upper surface plate 52 side, and the receiving member 4 may be attached to the lower surface plate 51 side.
In the said embodiment, although the cutting blade 1 was comprised with the block blade and the strip | belt-shaped blade, a punching blade can be comprised only with a block blade.

本発明は、たとば電気基盤、ディスプレイフィルム等の立体成形品の打ち抜きや、電気機器の筐体や、自動車のバックミラー等の合成樹脂成形体の端縁（バリ）の打ち抜きに適用することができる。 INDUSTRIAL APPLICABILITY The present invention can be applied to punching of three-dimensional molded products such as electric bases and display films, and punching of edges (burrs) of synthetic resin molded products such as housings of electric devices and rear mirrors of automobiles. it can.

本発明の打ち抜き刃を示す斜視図である。It is a perspective view which shows the punching blade of this invention. 図１の打ち抜き刃がセットされた抜き型を示す斜視図である。It is a perspective view which shows the punching die with which the punching blade of FIG. 1 was set. 図１の打ち抜き刃と共に使用される受け部材を示す図であり、（Ａ）は側面図、（Ｂ）は平面図である。It is a figure which shows the receiving member used with the punching blade of FIG. 1, (A) is a side view, (B) is a top view. 図２の抜き型と図３の受け部材が取り付けられた定盤プレス機を示す図である。It is a figure which shows the surface plate press to which the punching die of FIG. 2 and the receiving member of FIG. 3 were attached. 定盤プレス機において抜き型と受け部材とに位置調整を施した実施形態を示す図である。It is a figure which shows embodiment which performed position adjustment to the cutting die and the receiving member in the surface plate press. 従来技術の説明図であり、（Ａ）は刃先と反対側から楔形状の切り込みが入れられた帯状刃を示す図、（Ｂ）はその使用態様を示す図である。It is explanatory drawing of a prior art, (A) is a figure which shows the strip | belt shaped blade in which the wedge-shaped cut | incision was put from the opposite side to a blade edge | tip, (B) is a figure which shows the usage aspect.

Explanation of symbols

１打ち抜き刃
２合板
３抜き型
４受け部材
７ガイド機構
１１ブロック刃
１２帯状刃
５１下定盤
５２上定盤
６１，６２治具
７１ガイド管
７２ガイドロッド
ｅ刃先
Ｇ溝
ＭＰシート
Ｓ曲面
ＳＬ１，ＳＬ２スリット DESCRIPTION OF SYMBOLS 1 Punching blade 2 Plywood 3 Punching die 4 Receiving member 7 Guide mechanism 11 Block blade 12 Strip blade 51 Lower surface plate 52 Upper surface plate 61,62 Jig 71 Guide tube 72 Guide rod e Cutting edge G Groove MP sheet S Curved surface SL1, SL2 Slit

Claims

A punching blade used in a punching die for punching a three-dimensionally formed body disposed between upper and lower surface plates,
A punching blade comprising a blade at the tip of a metal block, the tip height of the blade having a height that varies depending on a portion of the blade tip, and formed by machining.

The metal block includes a slit on which a band-shaped blade is mounted, and the slit is mounted with a band-shaped blade whose blade tip is continuous with the blade tip formed on the metal block. The punching blade according to 1.