JPH0518069Y2 - - Google Patents
Info
- Publication number
- JPH0518069Y2 JPH0518069Y2 JP9948887U JP9948887U JPH0518069Y2 JP H0518069 Y2 JPH0518069 Y2 JP H0518069Y2 JP 9948887 U JP9948887 U JP 9948887U JP 9948887 U JP9948887 U JP 9948887U JP H0518069 Y2 JPH0518069 Y2 JP H0518069Y2
- Authority
- JP
- Japan
- Prior art keywords
- blade
- zigzag
- cutting edge
- cutting
- ajiro
- 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
- 238000005520 cutting process Methods 0.000 claims description 31
- 238000005336 cracking Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Nonmetal Cutting Devices (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
Description
【考案の詳細な説明】
＜産業上の利用分野＞
本考案は、印刷機械の折機において、アジロミ
シン目形成に用いられるアジロ刃に関する。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a zigzag blade used for forming zigzag perforations in a folding machine of a printing machine.
＜従来の技術＞
従来、アジロ製本においては、チヨツパ折に先
立ち、折目に内側の紙を露出させて全紙に亘るの
り付けを可能とするため、チヨツパ折の折線に沿
つてアジロミシン目を形成している。このアジロ
ミシン目は円盤形の本体の外周部に複数の刃部が
設けられて成るアジロ刃により形成される。<Conventional technology> Conventionally, in zigzag bookbinding, zigzag perforations are formed along the crease line of the zigzag fold in order to expose the paper on the inside of the fold at the fold and enable gluing over the entire sheet. ing. This zigzag perforation is formed by a zigzag blade which has a plurality of blades provided on the outer periphery of a disc-shaped main body.
第４図ａは従来のアジロ刃の部分正面図であ
る。同図に示すように、アジロ刃１１は円盤状の
本体１２の外周部に複数の刃部１３が円周方向等
間隔に設けられていて、各刃部１３の外周縁にア
ジロミシン目用切れ刃１４が形成されている。而
して、アジロ刃１１は図中矢印の方向に回転駆動
され、折丁の折線位置に各刃部１３でミシン目を
切込む。 FIG. 4a is a partial front view of a conventional Ajiro blade. As shown in the figure, the swivel blade 11 has a plurality of blade portions 13 provided at equal intervals in the circumferential direction on the outer periphery of a disc-shaped main body 12, and a cutting edge for swivel perforations is provided on the outer periphery of each blade portion 13. 14 is formed. The zigzag blade 11 is driven to rotate in the direction of the arrow in the figure, and each blade part 13 cuts a perforation at the fold line position of the signature.
＜考案が解決しようとする問題点＞
ところが、第４図ａのＢ−Ｂ断面図を表わ
す第４図ｂに示すよに、従来のアジロ刃１１は、
各刃部１３の回転方向前端部１５が平坦な面とな
つていたため、刃部１３の紙に対する切込み始め
の切れ味が悪かつた。そのため、各刃部１３にお
ける切込み開始時はその端部１５により紙を破り
裂く形となり、その結果、第５図及び第６図に示
すように、アジロ刃１１により形成された折丁１
６のアジロミシン目１７の端部に割れ１８や破れ
１９が発生し易く、またカツト部２０とアンカツ
ト部２１の長さが不均一になり、これらが製本上
での折丁１６の引張り強度の不安定化に繋がつて
いた。<Problems to be solved by the invention> However, as shown in FIG. 4b, which is a sectional view taken along line B-B in FIG. 4a, the conventional Ajiro blade 11 has
Since the front end 15 in the rotational direction of each blade part 13 was a flat surface, the blade part 13 was not sharp at the beginning of cutting into the paper. Therefore, when each blade part 13 starts cutting, the end part 15 tears the paper, and as a result, as shown in FIGS. 5 and 6, the signature 1 formed by the Ajiro blade 11
Cracks 18 and tears 19 are likely to occur at the ends of the lateral perforations 17 of 6, and the lengths of the cut portions 20 and uncut portions 21 become uneven, which can lead to uneven tensile strength of the signatures 16 during bookbinding. It was linked to stabilization.
本考案は、このような従来のアジロ刃における
問題点を解決するものであり、ミシン目端部の割
れや破れの発生を防止すると共にカツト部とアン
カツト部の長さの均一化を図つたアジロ刃を提供
することを目的としている。 The present invention solves these problems with conventional Ajiro blades, and is designed to prevent the occurrence of cracks and tears at the end of the perforation, and to make the length of the cut part and uncut part uniform. The purpose is to provide a blade.
＜問題点を解決するための手段＞
上述の問題点を解決する本考案にかかるアジロ
刃は、円盤状本体の外周部に複数の刃部を有し、
それら各刃部の外周縁にアジロミシン目用切れ刃
が形成されたアジロ刃において、前記各刃部の切
込み回転方向前縁に前記外周縁のアジロミシン目
用切れ刃と連続する切込用切れ刃が形成されたこ
とを特徴とする。<Means for solving the problems> The blade of the present invention for solving the above problems has a plurality of blades on the outer periphery of a disk-shaped body,
The notch blade has a cutting edge for the notch perforation formed on the outer peripheral edge of each blade portion, and is characterized in that a cutting edge for incision that is continuous with the cutting edge for the notch perforation on the outer peripheral edge is formed on the leading edge of each blade portion in the cutting rotation direction.
＜作用＞
各刃部の切込み回転方向前縁に切込用切れ刃が
形成されたので、刃部による切込み開始時はその
切れ刃から紙に切込み、紙に対する円滑な刃部の
進入がなされる。<Function> Since a cutting edge is formed on the front edge of each blade in the cutting rotation direction, when the blade starts cutting, the cutting edge cuts into the paper, and the blade smoothly enters the paper. .
＜実施例＞
以下、本考案の一実施例を図面により具体的に
説明する。<Example> Hereinafter, an example of the present invention will be specifically described with reference to the drawings.
第１図ａは本考案の一実施例にかかるアジロ刃
の部分正面図、第１図ｂは第１図ａのＢ−Ｂ
断面図、第１図ｃは第１図ａのＣ−Ｃ断面
図、第２図ａは同アジロ刃の半截正面図、第２図
ｂは同じくその断面図である。 FIG. 1a is a partial front view of the Ajiro blade according to an embodiment of the present invention, and FIG. 1b is B-B in FIG. 1a.
FIG. 1c is a sectional view taken along the line CC in FIG. 1a, FIG. 2a is a half-cut front view of the same blade, and FIG. 2b is a sectional view thereof.
第１図及び第２図に示すように、本アジロ刃２
１は、従来と同様に円盤状本体２２の外周部に円
周方向等間隔に複数の刃部２３が設けられ、各刃
部２３の外周縁にアジロミシン目用切れ刃２４が
形成されている。さらに本アジロ刃２１では、各
刃部２３の切込み回転方向前縁に切込用切れ刃２
５が形成され、この切込用切れ刃２５が前記アジ
ロミシン目用切れ刃２４と連続するようになつて
いる。 As shown in Figures 1 and 2, this Ajiro blade 2
1, a plurality of blade parts 23 are provided at equal intervals in the circumferential direction on the outer periphery of a disc-shaped main body 22 as in the conventional case, and cutting edges 24 for azimuth perforations are formed on the outer periphery of each blade part 23. Furthermore, in the present Ajiro blade 21, a cutting edge 2 is provided at the front edge of each blade portion 23 in the cutting rotation direction.
5 is formed, and this cutting edge 25 for cutting is continuous with the cutting edge 24 for azimuth perforation.
このようなアジロ刃２１は、その使用状態を表
わす第３図に示すように、図中矢印の方向に回転
駆動され、その刃部２３により紙２６を押圧し、
紙２６にアジロミシン目２７を切込み形成する。
ここで、本アジロ刃２１によれば、刃部２３が紙
２６に対する切込みは前縁に設けた切込用切れ刃
２５により開始され、その切れ刃２５によつて紙
２６を破り裂くことなしに円滑に切込過程が進行
する。従つて、紙２６のアジロミシン目２７の端
部に割れや破れが発生することなく、刃部２３の
紙２６に対する進入が可能となる。 As shown in FIG. 3, which shows the state in which the blade 21 is used, the blade 21 is driven to rotate in the direction of the arrow in the figure, and presses the paper 26 with its blade 23.
A zigzag perforation 27 is cut into the paper 26.
Here, according to the present Ajiro blade 21, the cutting into the paper 26 by the blade part 23 is started by the cutting cutting edge 25 provided at the front edge, and the cutting edge 25 can be used to cut the paper 26 without tearing it. The cutting process progresses smoothly. Therefore, the blade portion 23 can enter the paper 26 without cracking or tearing the edge of the lateral perforation 27 of the paper 26.
＜考案の効果＞
以上、一実施例を挙げて詳細に説明したように
本考案によれば、各刃部の前縁に切込用切れ刃を
形成したので、切込み開始時においてその切込用
切れ刃により円滑な刃部の進入が可能となり、ミ
シン目端部の割れや破れの発生を防止すると共
に、それによりカツト部とアンカツト部の長さが
均一化し、また折丁毎のアジロミシン目部での引
張強度のばらつきを抑えることができる。<Effects of the invention> As described above in detail with reference to one embodiment, according to the present invention, a cutting edge is formed on the front edge of each blade part, so that the cutting edge is The cutting edge allows for smooth entry of the blade, which prevents cracking or tearing at the end of the perforation.This also makes the length of the cut and uncut parts uniform, and the azimuth perforation of each signature. Variations in tensile strength can be suppressed.
第１図ａは本考案の一実施例にかかるアジロ刃
の部分正面図、第１図ｂは第１図ａのＢ−Ｂ
断面図、第１図ｃは第１図ａのＣ−Ｃ断面
図、第２図ａは同アジロ刃の半截正面図、第２図
ｂは同じくその断面図、第３図は同アジロ刃の使
用状態の説明図、第４図ａは従来例にかかるアジ
ロ刃の部分正面図、第４図ｂは第４図ａのＢ−
Ｂ断面図、第５図及び第６図は従来のアジロ刃
により加工された折丁の不具合の説明図である。
図面中、２１はアジロ刃、２２は本体、２３は
刃部、２４はアジロミシン目用切れ刃、２５は切
込用切れ刃である。
FIG. 1a is a partial front view of the Ajiro blade according to an embodiment of the present invention, and FIG. 1b is B-B in FIG. 1a.
Cross-sectional view, Figure 1c is a CC cross-sectional view of Figure 1a, Figure 2a is a half-cut front view of the same Ajiro blade, Figure 2b is a sectional view thereof, and Figure 3 is a cross-sectional view of the same Ajiro blade. An explanatory view of the state of use, FIG. 4a is a partial front view of the conventional Ajiro blade, and FIG. 4b is the B- of FIG. 4a.
B sectional view, FIGS. 5 and 6 are explanatory diagrams of defects in signatures processed by the conventional Ajiro blade. In the drawings, reference numeral 21 indicates a zigzag blade, 22 a main body, 23 a blade portion, 24 a zigzag perforation cutting edge, and 25 a cutting edge.
Claims (1)
ら各刃部の外周縁にアジロミシン目用切れ刃が形
成されたアジロ刃において、前記各刃部の切込み
回転方向前縁に前記外周縁のアジロミシン目用切
れ刃と連続する切込用切れ刃が形成されたことを
特徴とするアジロ刃。 A zigzag blade that has a plurality of blade parts on the outer periphery of a disc-shaped main body, and a zigzag perforation cutting edge is formed on the outer periphery of each of the blade parts, the outer periphery at the front edge in the cutting rotation direction of each blade part. A zigzag blade characterized in that a zigzag perforation cutting edge and a continuous cutting edge are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9948887U JPH0518069Y2 (en) | 1987-06-30 | 1987-06-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9948887U JPH0518069Y2 (en) | 1987-06-30 | 1987-06-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS644599U JPS644599U (en) | 1989-01-12 |
| JPH0518069Y2 true JPH0518069Y2 (en) | 1993-05-13 |
Family
ID=31326692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9948887U Expired - Lifetime JPH0518069Y2 (en) | 1987-06-30 | 1987-06-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0518069Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016094247A (en) * | 2014-08-20 | 2016-05-26 | レンゴー株式会社 | Carton, perforation forming method for carton sheet, and perforation forming unit |
| WO2016027761A1 (en) * | 2014-08-20 | 2016-02-25 | レンゴー株式会社 | Cardboard box, cardboard sheet perforation-forming method, and perforation-forming unit |
-
1987
- 1987-06-30 JP JP9948887U patent/JPH0518069Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS644599U (en) | 1989-01-12 |
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