JP5844304B2 - Sheet punching blade - Google Patents

Sheet punching blade Download PDF

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JP5844304B2
JP5844304B2 JP2013085778A JP2013085778A JP5844304B2 JP 5844304 B2 JP5844304 B2 JP 5844304B2 JP 2013085778 A JP2013085778 A JP 2013085778A JP 2013085778 A JP2013085778 A JP 2013085778A JP 5844304 B2 JP5844304 B2 JP 5844304B2
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sheet
pitch
blade
punching blade
edge
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JP2014208382A (en
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眞二 水野
眞二 水野
大成 水野
大成 水野
宏明 矢木
宏明 矢木
裕太 水野
裕太 水野
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MIZUNO MOKKO MISHIN SUKASHIBORI KOGYOSHO & CO., LTD.
Chiyoda Corp
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MIZUNO MOKKO MISHIN SUKASHIBORI KOGYOSHO & CO., LTD.
Chiyoda Corp
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  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Description

本発明は、段ボール紙、板紙等のシートを打ち抜くダイカッタの抜型（トムソン型とも称される）に設定されるシート打抜刃に関するものである。   The present invention relates to a sheet punching blade set in a die cutter punching die (also referred to as a Thomson die) for punching a sheet such as corrugated paper or paperboard.

一般に、打抜刃によって打ち抜かれた段ボール紙、板紙、プラスチックシート等のシートは、その切断縁が鋭利になるために取扱者が手指や掌を切ってしまうことが多々ある。
このような手切れを防止するために、下記特許文献１に示された打抜刃では、刃先を一定ピッチにて刃板両側面方向に波打つ波状に形成し、シートに波状の切断縁が形成されるようにしている。また、下記特許文献２、３には、全切刃と半切刃とが形成された打抜刃によりシートを打ち抜くことにより、シートに半切線が形成されるようにしている。 In general, a sheet of corrugated paper, paperboard, a plastic sheet, or the like punched by a punching blade often has a sharp edge at the handling end, and the operator often cuts fingers and palms.
In order to prevent such hand cutting, in the punching blade shown in the following Patent Document 1, the cutting edge is formed in a wavy shape undulating in the direction of both sides of the blade plate at a constant pitch, and a wavy cutting edge is formed in the sheet To be. In Patent Documents 2 and 3, the sheet is punched out by a punching blade having a full cutting edge and a half cutting edge, so that a half cutting line is formed in the sheet.

特許第４７５９１００号公報Japanese Patent No. 4759100 特開２０１０−５２０４９号公報JP 2010-52049 A 特開２００５−１１８９００号公報JP-A-2005-118900

しかしながら、特許文献１に示されたようにシートの切断縁が波状であるだけでは、手切れを防止する効果は十分でなく、特に再生紙等、強度を出すための処理が行なわれたようなシートでは、依然として手を怪我するおそれがあった。また、特許文献２、３に示されたように半切部を形成することによっては、半切部の幅や間隔の設定が難しく、その設定如何により手切れ防止効果が十分に得られなかったり、切断縁の形状があまくなるおそれがあった。   However, as shown in Patent Document 1, if the cutting edge of the sheet is only wavy, the effect of preventing hand cutting is not sufficient, and in particular, processing such as recycled paper has been performed to increase the strength. There was still a risk of injury to the hand on the seat. In addition, by forming a half-cut portion as shown in Patent Documents 2 and 3, it is difficult to set the width and interval of the half-cut portion. There was a risk that the shape of the edge would become rough.

本発明に係るシート打抜刃は、上記課題を解決しようとするもので、鋼板からなる帯板状の刃板の一側縁に刃先を両側へ交互に偏心させることにより長手方向に０．５ｍｍ〜５ｍｍのピッチＰにて波状に連なる刃先を形成するとともに、幅０．２ｍｍ〜２ｍｍ、深さ０．５ｍｍ〜２ｍｍのスリットを該波状刃先の両曲頂部に下記ピッチＱにて形成し、打ち抜かれるシートにピッチＱにて非切断部が形成されるようにしたことを特徴とする。
Ｑ＝（Ｎ＋０．５）Ｐ ただし、Ｎは自然数
また、本発明は上記シート打抜刃であって、打ち抜かれるシートの製品側となるスリットの幅をクズ側となるスリットの幅よりも広くしたことを特徴とする。 The sheet punching blade according to the present invention is intended to solve the above-mentioned problem. By alternately decentering the blade edge to both sides on one side edge of a strip-shaped blade plate made of a steel plate, 0.5 mm in the longitudinal direction. Forms cutting edges that are waved at a pitch P of -5 mm, and slits having a width of 0.2 mm to 2 mm and a depth of 0.5 mm to 2 mm are formed at both pitches of the wavy cutting edge at the following pitch Q and punched. An uncut portion is formed at a pitch Q on the sheet to be formed.
Q = (N + 0.5) P However, N is a natural number Moreover, this invention is the said sheet punching blade, Comprising: The width | variety of the slit used as the product side of the sheet | seat punched out was made wider than the width | variety of the slit used as a scrap side It is characterized by that.

本発明に係るシート打抜刃によれば、打ち抜いたシートによる怪我をより確実に防止できる。   According to the sheet punching blade of the present invention, it is possible to more reliably prevent injuries caused by the punched sheet.

本発明に係るシート打抜刃の斜視図。The perspective view of the sheet punching blade which concerns on this invention. 本発明に係るシート打抜刃の平面図。The top view of the sheet punching blade which concerns on this invention. 本発明に係るシート打抜刃のスリットの拡大正面図。The enlarged front view of the slit of the sheet punching blade which concerns on this invention. 本発明に係るシート打抜刃の平面図。The top view of the sheet punching blade which concerns on this invention. 本発明に係るシート打抜刃のスリットの拡大正面図。The enlarged front view of the slit of the sheet punching blade which concerns on this invention. 本発明に係るシート打抜刃のスリットの拡大正面図。The enlarged front view of the slit of the sheet punching blade which concerns on this invention.

図１、図２に示したシート打抜刃は、厚さｔが０．５ｍｍ〜１．２ｍｍの鋼板からなる帯板状の刃板１の一側縁に先鋭な刃先２を形成し、該刃先２を該刃板１の両側へ交互に偏心させることにより、該刃先２を長手方向に０．５ｍｍ〜５ｍｍのピッチＰにて波状に連なる形態に形成してなる。そして、図３に拡大して示したように、幅ｗが０．２ｍｍ〜２ｍｍ、深さｄが０．５ｍｍ〜２ｍｍのスリット３ａ，３ｂを該刃先２の両曲頂部（即ち、波の山頂と谷底との両頂部）に下記ピッチＱにて形成する。
Ｑ＝（Ｎ＋０．５）Ｐ
なお、この式で、Ｎは自然数（即ち、１、２、３、４、……であって、０は含まない。）である。 The sheet punching blade shown in FIG. 1 and FIG. 2 forms a sharp blade edge 2 on one side edge of a strip-shaped blade plate 1 made of a steel plate having a thickness t of 0.5 mm to 1.2 mm, By alternately decentering the blade edge 2 to both sides of the blade plate 1, the blade edge 2 is formed in a wave-like form at a pitch P of 0.5 mm to 5 mm in the longitudinal direction. Then, as shown in an enlarged view in FIG. 3, the slits 3a and 3b having a width w of 0.2 mm to 2 mm and a depth d of 0.5 mm to 2 mm are formed on both curved tops of the cutting edge 2 (that is, the wave peaks And the bottom of the valley bottom) with the following pitch Q.
Q = (N + 0.5) P
In this expression, N is a natural number (that is, 1, 2, 3, 4,..., And 0 is not included).

例えば、この式にＮ＝１を代入すると、Ｑ＝１．５Ｐとなり、刃先２の波ピッチＰの１．５倍にてスリット３ａ，３ｂを形成することとなる。図１、図２に示した実施形態は、このようにスリット３ａ，３ｂを１．５Ｐのピッチにて該刃先２の両曲頂部に形成したものである。   For example, if N = 1 is substituted into this equation, Q = 1.5P, and the slits 3a and 3b are formed at 1.5 times the wave pitch P of the cutting edge 2. In the embodiment shown in FIG. 1 and FIG. 2, the slits 3a and 3b are thus formed at both the tops of the cutting edge 2 at a pitch of 1.5P.

なお、上記スリット３ａ，３ｂの幅ｗについては、スリット３ｂの幅ｗの方がスリット３ａの幅ｗよりも僅かながら（１０％前後）広くしてあり、このシート打抜刃によってシートを打ち抜く場合に、幅ｗが広いスリット３ｂが製品側となり、幅ｗが狭いスリット３ａがクズ側となるように抜型に設定される。   The width w of the slits 3a and 3b is slightly (approximately 10%) wider than the width w of the slit 3a, and the sheet is punched by this sheet punching blade. In addition, the slits 3b having a wide width w are set on the product side, and the slits 3a having a narrow width w are set on the scrape side so as to be cut.

一方、図４に示したシート打抜刃は、Ｎ＝２とすることでピッチＱ＝２．５Ｐにて刃先２の両曲頂部にスリット３ａ，３ｂを形成したものである。
このように、上記式に従いスリット３ａ，３ｂを形成するピッチＱを決定することにより、スリット３ａ，３ｂは波ピッチＰより広い間隔にて刃板１の両側に交互に形成されることとなる。 On the other hand, in the sheet punching blade shown in FIG. 4, slits 3a and 3b are formed at both the tops of the cutting edge 2 at a pitch Q = 2.5P by setting N = 2.
Thus, by determining the pitch Q for forming the slits 3a and 3b in accordance with the above formula, the slits 3a and 3b are alternately formed on both sides of the blade plate 1 at intervals wider than the wave pitch P.

このようにスリット３ａ，３ｂを形成したシート打抜刃は、抜型に設定されシートを打ち抜いたときに、該シートにピッチＰの波状に切り込みが入るとともにピッチＱにて非切断部（切り残し）が形成される。このため該シートの製品部とクズ部とが該非切断部にて適度に繋がったままとなり、次の工程で該シートの製品部或いはクズ部に外力を加えることで製品或いはクズが抜き落とされ分離される。このとき該非切断部が強制的に引き千切られることから、製品の波状縁およびクズの波状縁に布毛状の毛羽立ちが上記ピッチＱにて該波状縁の凹所と凸所に交互に形成されることとなる。   Thus, the sheet punching blade formed with the slits 3a and 3b is set to a punching die, and when the sheet is punched, the sheet is cut into a wave shape with a pitch P and is not cut at the pitch Q (uncut portion). Is formed. For this reason, the product part and the scrap part of the sheet remain appropriately connected at the non-cut part, and the product or the scrap is removed by applying an external force to the product part or the scrap part of the sheet in the next step. Is done. At this time, since the uncut portion is forcibly shredded, fluffed fluff is alternately formed in the concave and convex portions of the wavy edge at the pitch Q. The Rukoto.

このように製品やクズの波状縁に毛羽立ちが該波状縁の凹所と凸所に交互に形成されることで、手指や掌の肌に当たる感触が柔らかくなり、怪我が防止される。また、製品側となるスリット３ｂの幅ｗをクズ側となるスリット３ａの幅ｗよりも広くすることにより、製品の波状縁の凹所に凸所よりも太い毛羽立ちが形成されることとなる。このため、製品の波状縁に触れた手の肌が該波状縁に沿って移動した際にも該凹所内にある柔らかい毛羽立ちが該肌に触れ、肌が切れるのを確実に防止することができる。   In this way, fluffing is alternately formed on the concave and convex portions of the wavy edges of the product and the scraps, so that the touch of the fingers and palms is softened and injuries are prevented. Further, by making the width w of the slit 3b on the product side wider than the width w of the slit 3a on the scrap side, fuzz that is thicker than the convex portion is formed in the concave portion of the wavy edge of the product. For this reason, even when the skin of the hand touching the wavy edge of the product moves along the wavy edge, it is possible to reliably prevent soft fluff in the recess from touching the skin and cutting the skin. .

また、このシート打抜刃は、刃先２が波状であってその両曲頂部、即ち、山頂と谷底とに交互にスリット３ａ，３ｂが形成されているので、該シート打抜刃を抜型に設定した際に両側に均等にスリット３ａ，３ｂが位置しバランスが保たれる。このため、切断時に掛かる強い力によっても該シート打抜刃が片側に傾くようなことがなく、安定的に支持され、抜型の耐久性が維持される。   Further, this sheet punching blade has a wave-shaped cutting edge 2 and slits 3a and 3b are alternately formed at the tops of the two curves, that is, at the top and bottom of the valley. In this case, the slits 3a and 3b are evenly located on both sides, and the balance is maintained. For this reason, the sheet punching blade is not tilted to one side even by a strong force applied at the time of cutting, and is stably supported, and the durability of the die cutting is maintained.

なお、スリット３ａ，３ｂの形状は、図３に示した方形状に限らず、図５に示したような逆台形状としてもよく、或いは図６に示したようなＶ字状としてもよい。また、該スリット３ａ，３ｂの幅や深さは、打ち抜くシートの厚さや材質に応じて適宜選択される。   The shapes of the slits 3a and 3b are not limited to the square shape shown in FIG. 3, but may be an inverted trapezoidal shape as shown in FIG. 5 or a V shape as shown in FIG. The width and depth of the slits 3a and 3b are appropriately selected according to the thickness and material of the punched sheet.

１ 刃板
２ 刃先
３ａ，３ｂ スリット 1 Blade plate 2 Cutting edge 3a, 3b Slit

Claims (1)

鋼板からなる帯板状の刃板の一側縁に刃先を両側へ交互に偏心させることにより長手方向に０．５ｍｍ〜５ｍｍのピッチＰにて波状に連なる刃先を形成するとともに、幅０．２ｍｍ〜２ｍｍ、深さ０．５ｍｍ〜２ｍｍのスリットを該波状刃先の両曲頂部に下記ピッチＱにて形成し、打ち抜かれるシートにピッチＱにて非切断部が形成されるようにしたことを特徴とするシート打抜刃。
Ｑ＝（Ｎ＋０．５）Ｐ ただし、Ｎは自然数。 By alternately decentering the blade edge on one side edge of a strip-shaped blade plate made of steel plate to both sides, a blade edge continuous in a wavy shape with a pitch P of 0.5 mm to 5 mm in the longitudinal direction is formed, and a width of 0.2 mm A slit having a pitch of ˜2 mm and a depth of 0.5 mm to 2 mm is formed at both pitches of the wavy cutting edge at the following pitch Q, and a non-cut portion is formed at the pitch Q on the punched sheet. Sheet punching blade.
Q = (N + 0.5) P where N is a natural number.
JP2013085778A 2013-04-16 2013-04-16 Sheet punching blade Active JP5844304B2 (en)

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JP6600554B2 (en) * 2015-12-28 2019-10-30 西川ゴム工業株式会社 Corrugated sheet material cutting method
CN109015893B (en) * 2018-09-20 2024-09-06 汇精（厦门）电子科技有限公司 Annular double faced adhesive tape, and equipment and process for producing annular double faced adhesive tape

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JPH1081326A (en) * 1996-09-10 1998-03-31 Three V:Kk Paper box with zipper and cut blade for machining zipper
JP3046878U (en) * 1997-09-05 1998-03-24 大阪シーリング印刷株式会社 Sheet material having perforations and cut forming apparatus for forming the cut
JP2006044700A (en) * 2004-08-02 2006-02-16 Kimura Kigata:Kk Tear unsealing mechanism of packaging container and serrate punching blade
JP3107968U (en) * 2004-09-29 2005-04-07 有限会社木村木型 Punching mold for packaging containers
JP4848833B2 (en) * 2006-05-11 2011-12-28 塩野義製薬株式会社 Package and substrate cutting structure
JP5567361B2 (en) * 2010-02-16 2014-08-06 菱江産業株式会社 Cut line for plastic sheet, plastic sheet and packaging case provided with the same

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