JP2004167983A - Ruling device - Google Patents

Ruling device Download PDF

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Publication number
JP2004167983A
JP2004167983A JP2002339417A JP2002339417A JP2004167983A JP 2004167983 A JP2004167983 A JP 2004167983A JP 2002339417 A JP2002339417 A JP 2002339417A JP 2002339417 A JP2002339417 A JP 2002339417A JP 2004167983 A JP2004167983 A JP 2004167983A
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JP
Japan
Prior art keywords
sheet
roll
ridge
notch
scoring
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.)
Granted
Application number
JP2002339417A
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Japanese (ja)
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JP4060692B2 (en
Inventor
Toshihiro Yoneda
利博 米田
Junjiro Watanabe
潤二郎 渡辺
Takayuki Takeuchi
孝之 竹内
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rengo Co Ltd
Nippon Die Steel Co Ltd
Original Assignee
Rengo Co Ltd
Nippon Die Steel Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rengo Co Ltd, Nippon Die Steel Co Ltd filed Critical Rengo Co Ltd
Priority to JP2002339417A priority Critical patent/JP4060692B2/en
Publication of JP2004167983A publication Critical patent/JP2004167983A/en
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Publication of JP4060692B2 publication Critical patent/JP4060692B2/en
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  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Making Paper Articles (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ruling device which forms a bending rule to a sheet such as a corrugated cardboard sheet and also forms auxiliary rules extending in the direction crossing the bending rule to the sheet on both sides of the bending rule without damaging the sheet. <P>SOLUTION: An annular ridge 5 for forming the bending rule is formed on the outer periphery of the male roll 3 opposed to a female roll 4 up and down and protruded parts 9 for forming auxiliary rules extending in the direction crossing the ridge 5 are formed in the peripheral direction at a distance to the ridge 5 on both sides of the ridge 5. A notch 10 is formed on at least the corner part for pushing in the sheet first among four corner parts of the respective protruded parts 9. The female roll 4 and the male roll 3 are rotated in opposite directions and the sheet S sent in the nip between both rolls 3 and 4 is pushed in by the ridge 5 and the protruded parts 9 to form the bending rule and the auxiliary rules. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
この発明は、一方向に搬送される段ボールシート等のシートに対して折曲げ用の罫線を形成する罫入れ装置に関するものである。
【0002】
【従来の技術】
この種、従来の罫入れ装置は、一方向に搬送されるシートの搬送路に、上下で対向する一対のロールを設け、その両ロールを相対的に逆方向に回転させ、一方のロールの外周に設けられた環状の突条によりシートを押し込んで折曲げ用の罫線を形成するようにしている(特許文献1参照)。
【0003】
【特許文献1】
特開2001−105512号公報(第4頁および第5頁、図1乃至図4)
【0004】
上記の構成から成る罫入れ装置は、段ボールシートに対する罫入れ用として多く用いられる。このとき、段ボールシートには波状中しんの段目にほぼ平行に罫入れされるが、罫線の形成位置は中しんの隣接する山の2等分位置や一つの山の頂きと対応する位置に罫入れされることはきわめて少なく、左右に片寄った位置に設けられる場合が多い。
【0005】
この場合、折曲げ用罫線を境界線として左右の部分では折曲げの強度が相違し、段ボールシートを罫線に沿って180°折曲げた場合、罫線の両側部が互に当接して干渉し合い、折曲げ位置は強度の弱い方に片寄りが生じて、前記罫線に沿って段ボールシートを精度よく折曲げることができない。
【0006】
そのような問題点を解決するため、折曲げ用罫線の両側位置に、その罫線に対して交差する方向に延びる補助罫線を前記折曲げ用罫線の長さ方向に間隔をおいて形成するようにした段ボールシートが提案されている(特許文献2および3参照)。
【0007】
【特許文献2】
特開平11−10753号公報(第3−4頁、図1および図2)
【特許文献3】
特開平9−70905号(第3頁、図7および図8)
【0008】
【発明が解決しようとする課題】
ところで、上記のような折曲げ用罫線と補助罫線とを一対のロールから成る罫入れ装置でもって形成しようとすると、一方のロールの外周に環状の突条を設け、その突条の両側に周方向に間隔をおいて突出部を設ける必要がある。この場合、突出部の4つのコーナ部のうち、回転方向前側のコーナ部は厚みのある段ボールシートを急激に強く押し込むため、段ボールシートを破損させる場合がある。
【0009】
この発明の課題は、一対のロールから成る罫入れ装置によって段ボールシート等のシートに対して、シートを破損させることなく折曲げ用の罫線と、その両側に補助罫線とを罫入れできるようにすることである。
【0010】
【課題を解決するための手段】
上記の課題を解決するために、この発明においては、第1ロールと第2ロールを上下で対向配置し、第1ロールの外周に罫入れ用の環状の突条と、その両側に一対のシート押圧面とを設け、前記両ロールを相対的に逆方向に回転し、第1ロールの外周に設けられた前記突条により両ロール間に送り込まれるシートを押し込んで折曲げ用の罫線を形成するようにした罫入れ装置において、前記第1ロールの外周における一対のシート押圧面のそれぞれに、前記突条に対して交差方向に延びる補助罫線罫入れ用の突出部を周方向に間隔をおいて設け、各突出部の4つのコーナ部のうち、少なくとも前記シートを最初に押し込むコーナ部に切欠きを形成した構成を採用したのである。
【0011】
上記のように構成すれば、第1ロールと第2ロール間にシートが送り込まれると、第1ロールの外周に形成された突条と突出部がシートを押し込むため、シートに折曲げ用の罫線と、その両側に補助罫線とを同時に形成することができると共に、各突出部のシートを最初に押し込むコーナ部に切欠きが設けられているため、シートを強く押し込むことはなく、シートを破損させることもない。
【0012】
【発明の実施の形態】
以下、この発明の実施の形態を図面に基づいて説明する。図1および図2に示すように、段ボールシート等のシートSの移送路には、そのシートSの移送方向に直交する方向に長い一対の回転軸1、2が上下に設けられ、各回転軸1、2は図1の矢印で示すように、相対的に逆方向に回転される。
【0013】
下側の回転軸2には第1ロールとしての雄ロール3が取付けられ、一方、上側の回転軸1には第2ロールとしての雌ロール4が取付けられている。
【0014】
雄ロール3は、回転軸1に対して回り止めされ、かつ軸方向に移動自在に支持されたロール本体3aと、そのロール本体3aの一側面にボルトの締付けによって着脱自在に取付けられた罫入れリング3bとから成っている。
【0015】
図3乃至図5に示すように、罫入れリング3bの外周には、軸方向の中央部に環状の突条5と、その両側に突条5の頂部より低い面を有する一対のシート押圧面6a、6bとが形成され、前記突条5の両側面とシート押圧面6a、6bとがそれぞれ交わる付根部のそれぞれに環状溝7が設けられている。この環状溝は必要に応じて形成しなくてもよい。
【0016】
一対のシート押圧面6a、6bは罫入れリング3bの両側面側の一端から突条5側の他端に向けて上り勾配をもって傾斜するテーパ面とされて相反する方向に傾斜しており、各シート押圧面6a、6bに軸方向に延びる溝8が周方向に等間隔に形成され、隣接する溝8間に補助罫線罫入れ用の突出部9が設けられている。
【0017】
ここで、突出部9は、突条5に対して交差する方向に傾斜している。また、突条5の両側に設けられた突出部9は相反する方向に傾斜していると共に、突条5の一側方に設けられた突出部9と他側方に設けられた突出部9は周方向に半ピッチ位相がずれている。
【0018】
各突出部9の4つのコーナ部のうち、シートを最初に押し込むコーナ部には切欠き10が設けられている。実施の形態では、図4の矢印で示す方向に罫入れリング3bが回転されるようになっており、このような回転方向の場合には、回転方向前側の前記突条5に近接する鋭角のコーナ部に切欠き10を設けるようにする。なお、罫入れリング3bが図4の矢印と反対の方向に回転される場合は、シートを最初に押し込むことになる各突出部9の罫入れリング3bの側面側の鋭角のコーナ部(イ) に切欠き10を設けるようにする。実施の形態における切欠き10の形状は図5に示すように三角錐状であるが、三角柱状の切欠きであってもよい。
【0019】
図2に示すように、雌ロール4は、回転軸1に対して回り止めされ、かつ軸方向に移動自在に支持されたロール本体4aと、そのロール本体4aの一側面にボルトの締付けによって着脱自在に取付けられた受けリング4bとから成っている。図3に示すように、受けリング4bの外周にはウレタンゴム等の弾性体から成る弾性体層12が設けられている。
【0020】
なお、弾性体層12は必要に応じて設けるようにし、省略されたものであってもよい。
【0021】
いま、図1の矢印で示すように、一対の回転軸1、2を相反する方向に回転させた状態において、雄ロール3と雌ロール4間に段ボールシート等のシートSが送り込まれると、そのシートSは雄ロール3の突条5により押し込まれて直線状の罫線が形成されると共に、シート押圧面6a、6bの溝8間に設けられた傾斜状の突出部9により押し込まれて、前記罫線の両側にその罫線に対して傾斜する補助罫線が形成される。
【0022】
ここで、補助罫線を罫入れする突出部9は突条5に対して交差する方向に傾斜し、その突条5に近接する回転方向前側のコーナ部は鋭角であってシートを最初に衝撃的に押し込むため、シートを破損させるおそれが生じる。しかし、上記コーナ部には切欠き10が設けられているため、コーナ部がシートSを強く押し込むことがなく、シートSを破損させることなく補助罫線を罫入れすることができる。
【0023】
図4および図5に示す実施の形態では、シートSを最も破損させるおそれの強い、傾斜状突出部9のシートを最初に押し込むコーナ部にのみ切欠き10を設けたが、そのコーナ部と対角位置であって、鋭角であるためにシートSを破損させ易いコーナ部にも切欠き10を設けるようにしてもよい。また、全てのコーナ部に切欠きを設けてもよい。
【0024】
なお、雄ロール3の回転に伴って、シートSは突出部9の回転方向前側から後側に向けて押圧されるため、当初の厚みを保持したままのシートSを最初に押し込むことになる突出部9の回転方向前側が後側よりシートSを破損させ易い。
【0025】
さらに、図1乃至図5に示す実施の形態では罫入れリング3bの外周に形成されたシート押圧面6a、6bがテーパ面から成るものを示したが、シート押圧面6a、6bの形状はこれに限定されない。例えば、テーパを有さない円筒面から成るものであってもよい。
【0026】
また、実施の形態では、一対のシート押圧面6a、6bの周方向に等間隔に形成された突出部9を傾斜状とし、その傾斜状の突出部9を他方のシート押圧面に形成された突出部9に対して周方向に半ピッチ位相をずらしたものを示したが、突出部9の形状、配置はこれに限定されず、図6(I)乃至(III )に示すような突出部9を採用することができる。
【0027】
図6(I)においては、一対のシート押圧面6a、6bの周方向に等間隔に形成された傾斜状の突出部9を同じ位相とすると共に、他方のシート面に形成された突出部9に対して逆向きに傾斜させている。また、各突出部9の回転方向前側の突条5に近接するコーナ部に切欠き10を設けている。
【0028】
図6(II)においては、一対のシート押圧面6a、6bのそれぞれに、突条5に対して直交する方向に延びる突出部9を周方向に等間隔に形成し、突条5の両側方の突出部9を周方向に半ピッチ位相をずらしている。また、各突出部9の回転方向前側の突条5に近接するコーナ部に切欠き10を設けている。
【0029】
図6(III )においては、一対のシート押圧面6a、6bのそれぞれに突条5に対して直交する方向に延びる突出部9を周方向に等間隔に形成し、突条5の両側方の突出部9を同じ位相で形成している。また、各突出部9の回転方向前側の突条5に近接するコーナ部に切欠き10を設けている。
【0030】
図6(I)乃至(III )に示すいずれの切欠き10においてもその形状は三角錐状または三角柱状であってもよく、このような切欠き10を形成されている罫入れリング3bにおいて、シートSを破損させることなく補助罫線を形成することができる。
【0031】
なお、図6(I)乃至(III )に示す各実施の形態では、突出部9の回転方向前側の突条5に近接するコーナ部にのみ切欠き10を形成したが、回転方向前側の2つのコーナ部に切欠きを設けてもよく、あるいは4つのコーナ部のそれぞれに切欠きを設けるようにしてもよい。図1乃至図5に示す実施の形態および図6に示す実施形態のいずれの実施形態も、印刷機の後工程部に取り付けられるホイール状のロールによる罫入れ装置を示したが、罫入れ装置はこれに限定されるものではない。例えば、第1ロールとしてのダイロールと、第2ロールとしてのアンビルロールとを有し、前記ダイロールの外周に取付けた型板に罫入れ用突条と、その両側にシート押圧面とを設け、各シート押圧面に突出部を設け、前記突条によって両ロール間に送り込まれるシートに対して罫入れ用の罫線を形成し、突出部によって補助罫線を罫入れするようにしたロータリダイカッタから成る罫入れ装置であってもよい。このような罫入れ装置の場合も、突出部の4つのコーナ部のうち、少なくともシートを最初に押し込むコーナ部に切欠きを設けておくようにする。
【0032】
【発明の効果】
以上のように、この発明においては、第2ロールに対向配置した第1ロールの外周に環状の突条を設け、その突条の両側方に、突条に対して交差する方向に延びる突出部を周方向に間隔をおいて形成したので、段ボールシート等のシートに対して、折曲げ用の罫線と、その両側に補助罫線とを罫入れすることができる。
【0033】
また、各突出部の4つのコーナ部のうち、少なくともシートを最初に押し込むコーナ部に切欠きを形成したことによってシートを破損させることなく補助罫線を罫入れすることができる。
【図面の簡単な説明】
【図1】この発明に係る罫入れ装置の実施の形態を示す縦断正面図
【図2】図1の一部切欠側面図
【図3】図1に示す罫入れリングの一部分を示す平面図
【図4】図2の一部分を拡大して示す断面図
【図5】図1に示す罫入れリングの一部分を示す斜視図
【図6】(1)乃至(III )は罫入れリングの他の例を示す平面図
【符号の説明】
3 雄ロール
4 雌ロール
5 突条
6a、6b シート押圧面
9 突出部
10 切欠き
[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ruler for forming a folding ruled line on a sheet such as a cardboard sheet conveyed in one direction.
[0002]
[Prior art]
This type of conventional scoring device is provided with a pair of vertically opposing rolls in a conveying path of a sheet conveyed in one direction, and the two rolls are relatively rotated in opposite directions, and the outer periphery of one of the rolls is rotated. The sheet is pushed in by an annular ridge provided on the sheet to form a ruled line for folding (see Patent Document 1).
[0003]
[Patent Document 1]
JP 2001-105512 A (pages 4 and 5, FIGS. 1 to 4)
[0004]
The scoring device having the above configuration is often used for scoring corrugated cardboard sheets. At this time, the corrugated cardboard sheet is creased almost parallel to the corrugated midline, but the ruled line is formed at a position corresponding to the bisecting position of the adjacent peak of the midline or a position corresponding to the top of one peak. It is rarely scored, and is often provided at a position offset to the left and right.
[0005]
In this case, the bending strength is different between the left and right portions with the folding ruled line as a boundary line. When the corrugated cardboard sheet is bent 180 ° along the ruled line, both sides of the ruled line contact each other and interfere with each other. In the bending position, the corrugated cardboard sheet cannot be bent with high accuracy along the ruled line because the bending position is shifted toward the weaker side.
[0006]
In order to solve such a problem, auxiliary ruled lines extending in a direction intersecting the ruled lines are formed at both sides of the bent ruled lines at intervals in the longitudinal direction of the bent ruled lines. There has been proposed a corrugated cardboard sheet (see Patent Documents 2 and 3).
[0007]
[Patent Document 2]
Japanese Patent Application Laid-Open No. 11-10753 (pages 3-4, FIGS. 1 and 2)
[Patent Document 3]
JP-A-9-70905 (page 3, FIGS. 7 and 8)
[0008]
[Problems to be solved by the invention]
By the way, when the folding ruled line and the auxiliary ruled line as described above are to be formed by a scoring device composed of a pair of rolls, an annular ridge is provided on the outer periphery of one roll, and the ridges are formed on both sides of the ridge. It is necessary to provide protrusions at intervals in the direction. In this case, among the four corner portions of the protruding portion, the corner portion on the front side in the rotation direction pushes the thick corrugated cardboard sheet sharply and strongly, which may damage the corrugated cardboard sheet.
[0009]
SUMMARY OF THE INVENTION An object of the present invention is to make it possible to score a sheet such as a corrugated cardboard sheet with a folding ruled line and auxiliary ruled lines on both sides of the sheet without damaging the sheet by a ruler comprising a pair of rolls. That is.
[0010]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, in the present invention, a first roll and a second roll are vertically opposed to each other, and an annular ridge for scoring is provided on the outer periphery of the first roll, and a pair of sheets are provided on both sides thereof. A pressing surface is provided, the two rolls are relatively rotated in opposite directions, and a sheet fed between the two rolls is pressed by the protrusion provided on the outer periphery of the first roll to form a ruled line for folding. In the scoring device configured as described above, a pair of sheet pressing surfaces on the outer circumference of the first roll are provided with projections for assisting ruled-line scoring extending in a direction intersecting with the ridge at circumferential intervals. A configuration is adopted in which notches are formed at least in the four corners of each protruding part, into which at least the sheet is pushed first.
[0011]
According to the above configuration, when the sheet is fed between the first roll and the second roll, the ridges and protrusions formed on the outer periphery of the first roll push the sheet, so that a folding ruled line is formed on the sheet. And auxiliary ruled lines on both sides thereof can be formed at the same time, and the notch is provided in the corner portion of each projecting portion where the sheet is pushed first, so that the sheet is not strongly pushed and the sheet is damaged. Not even.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, a pair of rotating shafts 1 and 2 that are long in a direction perpendicular to the direction in which the sheet S is transported are provided vertically on a transporting path of the sheet S such as a corrugated cardboard sheet. 1 and 2 are relatively rotated in the opposite directions as indicated by arrows in FIG.
[0013]
A male roll 3 as a first roll is mounted on the lower rotary shaft 2, while a female roll 4 as a second roll is mounted on the upper rotary shaft 1.
[0014]
The male roll 3 is prevented from rotating with respect to the rotating shaft 1 and supported in a freely movable manner in the axial direction, and a scoring which is detachably attached to one side surface of the roll body 3a by tightening a bolt. And a ring 3b.
[0015]
As shown in FIGS. 3 to 5, a pair of sheet pressing surfaces having an annular ridge 5 at the center in the axial direction and a surface lower than the top of the ridge 5 on both sides thereof are provided on the outer circumference of the scoring ring 3 b. 6a and 6b are formed, and annular grooves 7 are provided at respective root portions where both side surfaces of the ridge 5 intersect the sheet pressing surfaces 6a and 6b, respectively. This annular groove need not be formed if necessary.
[0016]
The pair of sheet pressing surfaces 6a and 6b are tapered surfaces that are inclined with an ascending gradient from one end on both side surfaces of the ruled ring 3b toward the other end on the ridge 5 side, and are inclined in opposite directions. Grooves 8 extending in the axial direction are formed at equal intervals in the circumferential direction on the sheet pressing surfaces 6a and 6b, and a projection 9 for scoring auxiliary ruled lines is provided between adjacent grooves 8.
[0017]
Here, the protrusion 9 is inclined in a direction intersecting the protrusion 5. The projections 9 provided on both sides of the ridge 5 are inclined in opposite directions, and the projection 9 provided on one side of the ridge 5 and the projection 9 provided on the other side. Are shifted by a half pitch in the circumferential direction.
[0018]
Of the four corners of each protrusion 9, a notch 10 is provided at the corner where the sheet is pushed first. In the embodiment, the scoring ring 3b is rotated in the direction indicated by the arrow in FIG. 4, and in such a rotating direction, an acute angle close to the ridge 5 on the front side in the rotating direction. The notch 10 is provided at the corner. When the scoring ring 3b is rotated in the direction opposite to the direction of the arrow in FIG. 4, an acute-angled corner (a) on the side surface of the scoring ring 3b of each protrusion 9 to which the sheet is pushed first. Is provided with a notch 10. The shape of the notch 10 in the embodiment is a triangular pyramid as shown in FIG. 5, but may be a triangular prism-shaped notch.
[0019]
As shown in FIG. 2, the female roll 4 is prevented from rotating with respect to the rotating shaft 1 and is supported in a freely movable manner in the axial direction. The female roll 4 is attached to and detached from one side of the roll main body 4a by tightening bolts. And a receiving ring 4b freely mounted. As shown in FIG. 3, an elastic layer 12 made of an elastic material such as urethane rubber is provided on the outer periphery of the receiving ring 4b.
[0020]
The elastic layer 12 may be provided as needed, and may be omitted.
[0021]
Now, as shown by an arrow in FIG. 1, when a sheet S such as a cardboard sheet is fed between the male roll 3 and the female roll 4 in a state where the pair of rotating shafts 1 and 2 are rotated in opposite directions, The sheet S is pushed in by the ridges 5 of the male roll 3 to form linear ruled lines, and is pushed in by an inclined protrusion 9 provided between the grooves 8 of the sheet pressing surfaces 6a and 6b. On both sides of the ruled line, auxiliary ruled lines inclined with respect to the ruled line are formed.
[0022]
Here, the projecting portion 9 for scoring the auxiliary ruled line is inclined in a direction intersecting with the ridge 5, and the corner portion on the front side in the rotation direction adjacent to the ridge 5 has an acute angle, and the sheet is first impacted. , The sheet may be damaged. However, since the notch 10 is provided in the corner portion, the auxiliary ruled line can be scored without the corner portion strongly pushing the sheet S, and without damaging the sheet S.
[0023]
In the embodiment shown in FIGS. 4 and 5, the notch 10 is provided only at the corner where the sheet S of the inclined protruding portion 9 which is most likely to damage the sheet S is pushed first. The notch 10 may be provided in a corner portion where the sheet S is easily broken due to an acute angle at the corner position. Notches may be provided in all corners.
[0024]
Since the sheet S is pressed from the front side to the rear side in the rotation direction of the protruding portion 9 with the rotation of the male roll 3, the sheet S with the original thickness is pushed first. The front side in the rotation direction of the portion 9 is more likely to damage the sheet S than the rear side.
[0025]
Further, in the embodiment shown in FIGS. 1 to 5, the sheet pressing surfaces 6a and 6b formed on the outer periphery of the scoring ring 3b are formed as tapered surfaces, but the shape of the sheet pressing surfaces 6a and 6b is It is not limited to. For example, it may be formed of a cylindrical surface having no taper.
[0026]
In the embodiment, the projecting portions 9 formed at equal intervals in the circumferential direction of the pair of sheet pressing surfaces 6a and 6b are formed in an inclined shape, and the inclined projecting portion 9 is formed on the other sheet pressing surface. Although the half pitch phase is shifted in the circumferential direction with respect to the protrusion 9, the shape and the arrangement of the protrusion 9 are not limited thereto, and the protrusions as shown in FIGS. 9 can be employed.
[0027]
In FIG. 6 (I), the inclined projections 9 formed at equal intervals in the circumferential direction of the pair of sheet pressing surfaces 6a and 6b have the same phase, and the projections 9 formed on the other sheet surface. To the opposite direction. In addition, a notch 10 is provided in a corner portion of each protruding portion 9 adjacent to the protruding ridge 5 on the front side in the rotation direction.
[0028]
In FIG. 6 (II), on each of the pair of sheet pressing surfaces 6a and 6b, projecting portions 9 extending in a direction perpendicular to the projecting ridge 5 are formed at equal intervals in the circumferential direction, and both sides of the projecting ridge 5 are formed. Are shifted by a half pitch in the circumferential direction. In addition, a notch 10 is provided in a corner portion of each protruding portion 9 adjacent to the protruding ridge 5 on the front side in the rotation direction.
[0029]
In FIG. 6 (III), projecting portions 9 extending in a direction perpendicular to the projecting ridge 5 are formed at equal intervals in the circumferential direction on each of the pair of sheet pressing surfaces 6a and 6b. The protrusions 9 are formed in the same phase. In addition, a notch 10 is provided in a corner portion of each protruding portion 9 adjacent to the protruding ridge 5 on the front side in the rotation direction.
[0030]
In any of the notches 10 shown in FIGS. 6 (I) to (III), the shape may be a triangular pyramid or a triangular prism, and in the ruled ring 3b in which such a notch 10 is formed, The auxiliary ruled line can be formed without damaging the sheet S.
[0031]
In each of the embodiments shown in FIGS. 6 (I) to 6 (III), the notch 10 is formed only in the corner portion close to the ridge 5 on the front side in the rotation direction of the projection 9; A notch may be provided in one of the four corners, or a notch may be provided in each of the four corners. In each of the embodiments shown in FIGS. 1 to 5 and the embodiment shown in FIG. 6, a scoring device using a wheel-shaped roll attached to a post-process portion of a printing press has been described. It is not limited to this. For example, a die roll as a first roll, and an anvil roll as a second roll, a ridge for scoring on a template attached to the outer periphery of the die roll, and sheet pressing surfaces on both sides thereof are provided. A ruler comprising a rotary die cutter provided with a projecting portion on the sheet pressing surface, forming a ruled line for scoring on the sheet fed between the two rolls by the projecting line, and scoring an auxiliary ruled line by the projecting portion. It may be a storage device. Also in the case of such a ruler, a notch is provided in at least a corner portion of the four protruding portions where the sheet is pushed first.
[0032]
【The invention's effect】
As described above, in the present invention, an annular ridge is provided on the outer periphery of the first roll opposed to the second roll, and the projections extending in the direction intersecting the ridge on both sides of the ridge. Are formed at intervals in the circumferential direction, so that a folding ruled line and auxiliary ruled lines on both sides thereof can be scored on a sheet such as a corrugated cardboard sheet.
[0033]
In addition, since the notch is formed in at least the corner portion of the four corner portions of each protruding portion where the sheet is pushed first, the auxiliary ruled line can be scored without damaging the sheet.
[Brief description of the drawings]
1 is a longitudinal sectional front view showing an embodiment of a scoring device according to the present invention; FIG. 2 is a partially cutaway side view of FIG. 1; FIG. 3 is a plan view showing a part of a scoring ring shown in FIG. FIG. 4 is an enlarged cross-sectional view showing a part of FIG. 2; FIG. 5 is a perspective view showing a part of the scoring ring shown in FIG. 1; FIG. 6 (1) to (III) are other examples of the scoring ring. [Description of reference numerals]
3 Male Roll 4 Female Roll 5 Protrusions 6a, 6b Sheet Pressing Surface 9 Projection 10 Notch

Claims (1)

第1ロールと第2ロールを上下で対向配置し、第1ロールの外周に罫入れ用の環状の突条と、その両側に一対のシート押圧面とを設け、前記両ロールを相対的に逆方向に回転し、第1ロールの外周に設けられた前記突条により両ロール間に送り込まれるシートを押し込んで折曲げ用の罫線を形成するようにした罫入れ装置において、前記第1ロールの外周における一対のシート押圧面のそれぞれに、前記突条に対して交差方向に延びる補助罫線罫入れ用の突出部を周方向に間隔をおいて設け、各突出部の4つのコーナ部のうち、少なくとも前記シートを最初に押し込むコーナ部に切欠きを形成したことを特徴とする罫入れ装置。A first roll and a second roll are vertically opposed to each other, and an annular ridge for scoring is provided on the outer periphery of the first roll, and a pair of sheet pressing surfaces are provided on both sides thereof. A sheet fed between the two rolls by the ridge provided on the outer circumference of the first roll to form a ruled line for folding, the outer circumference of the first roll In each of a pair of sheet pressing surfaces of the above, provided with protrusions for auxiliary ruled line marking extending in the cross direction with respect to the protrusion at intervals in the circumferential direction, at least among the four corners of each protrusion A notch is formed in a corner portion into which the sheet is pushed first.
JP2002339417A 2002-11-22 2002-11-22 Crease device Expired - Fee Related JP4060692B2 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009504542A (en) * 2005-08-20 2009-02-05 テク・ニ・フォールド リミテッド Drum for creasing device
DE102008025221A1 (en) * 2008-05-27 2009-12-10 WINKLER+DüNNEBIER AG Embossing roller or embossing roller for rotatively generating an embossing pattern in a flat piece of material
JP2014108699A (en) * 2012-11-30 2014-06-12 Unipres Corp Fuel tank for vehicle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009504542A (en) * 2005-08-20 2009-02-05 テク・ニ・フォールド リミテッド Drum for creasing device
KR101295097B1 (en) * 2005-08-20 2013-08-09 테크-니-폴드 엘티디 Drum for a creasing device
DE102008025221A1 (en) * 2008-05-27 2009-12-10 WINKLER+DüNNEBIER AG Embossing roller or embossing roller for rotatively generating an embossing pattern in a flat piece of material
JP2014108699A (en) * 2012-11-30 2014-06-12 Unipres Corp Fuel tank for vehicle

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