JP2002137856A - Coreless take-up shaft for continuous sheet - Google Patents
Coreless take-up shaft for continuous sheetInfo
- Publication number
- JP2002137856A JP2002137856A JP2001027929A JP2001027929A JP2002137856A JP 2002137856 A JP2002137856 A JP 2002137856A JP 2001027929 A JP2001027929 A JP 2001027929A JP 2001027929 A JP2001027929 A JP 2001027929A JP 2002137856 A JP2002137856 A JP 2002137856A
- Authority
- JP
- Japan
- Prior art keywords
- leaf
- shaft
- leaves
- winding shaft
- continuous sheet
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/18—Constructional details
- B65H75/24—Constructional details adjustable in configuration, e.g. expansible
- B65H75/242—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages
- B65H75/243—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages actuated by use of a fluid
- B65H75/2437—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages actuated by use of a fluid comprising a fluid-pressure-actuated elastic member, e.g. a diaphragm or a pneumatic tube
Landscapes
- Making Paper Articles (AREA)
- Winding Of Webs (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は紙管等のコアを用い
ずにコアレス状に食品包装フィルム（ラップシート）等
の連続シートを均等な真円形状の円筒形状に巻取るため
の連続シート用コアレス巻取軸に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous sheet for winding a continuous sheet such as a food packaging film (wrap sheet) into an even perfect circular cylindrical shape without using a core such as a paper tube. It relates to a coreless winding shaft.
【０００２】[0002]
【従来の技術】食品包装フィルムとして用いられる塩化
ビニリデン系フィルムやポリエチレンフィルムなどの樹
脂フィルムシートを円筒形状に巻取る従来の手段として
は、紙管などのコアをコアの内側から巻取軸の出没自在
なラグで支持され、進出されたラグでコアを内側から支
持した状態でコアを回転させ、この回転されるコアに巻
き取り素材の延伸性を利用して強い張力を掛けながら樹
脂フィルムシートを巻きつけ、コアに円筒形状に巻きつ
けられた樹脂フィルムシートはラグを後退させて、支持
状態を解除して、コアごと巻取軸から抜き取るようにし
ている。このように巻き取られた樹脂フィルムシートは
コアに円筒形状に巻きつけられた状態で需要者に提供さ
れる。2. Description of the Related Art As a conventional means for winding a resin film sheet such as a vinylidene chloride film or a polyethylene film used as a food packaging film into a cylindrical shape, a core such as a paper tube is protruded and retracted from the inside of the core. The core is rotated while the core is supported from the inside by the extended lugs, and a strong tension is applied to the rotated core by using the stretchability of the winding material, and the resin film sheet is applied. The resin film sheet wound in a cylindrical shape around the core is retracted from the lug to release the supporting state, and the core is pulled out from the winding shaft. The resin film sheet thus wound is provided to the consumer in a state of being wound around the core in a cylindrical shape.
【０００３】一方、シートをコアレス状に巻取る技術と
しては実開平４−３１７５３号の「トイレットペーパ巻
取用のエアーシャフト」が開示されている。このエアー
シャフトは芯（紙管）なし連続シートとしてのトイレッ
トペーパを巻取るために提案されたものであり、その構
造においてはエアーシャフトの筒体に半径方向に出没す
る整列ラグが設けられており、断面形状が円弧状で軸方
向に延びる複数のリーフが円周方向に分割して前記各列
のラグに個別に固定された構造となっている。ラグが半
径外方に突出したとき、リーフもそれに順じて半径外方
に拡開され、この状態においてリーフの外周に紙管を用
いることなくシートが直接巻き取られる。隣接したリー
フ間には軸線方向の全長に延びる隙間が形成されるが、
この隙間は狭いためリーフは全体としては一つの円筒面
を形成し、この回りにシートをロール状に巻取ることが
できる。そして、巻き取り完了時にはラグを半径内方に
収縮させると、リーフもそれに順じて半径内方に変位
し、エアーシャフトは縮径するため巻き取られたシート
ロールを引き抜くことができ、無心ロールが完成する。On the other hand, as a technique for winding a sheet in a coreless manner, Japanese Patent Laid-Open Publication No. 4-31753 discloses an "air shaft for winding toilet paper". This air shaft has been proposed for winding toilet paper as a continuous sheet without a core (paper tube). In the structure, an alignment lug is provided on a cylinder of the air shaft so as to protrude and disappear in a radial direction. A plurality of leaves having a circular arc shape and extending in the axial direction are divided in the circumferential direction and individually fixed to the lugs in each row. When the lugs protrude radially outward, the leaves are also radially expanded accordingly, and in this state, the sheet is directly wound up without using a paper tube around the leaves. A gap is formed between adjacent leaves that extends the full length in the axial direction,
Since this gap is narrow, the leaf forms a single cylindrical surface as a whole, and the sheet can be wound around this around the roll. Then, when the winding is completed, the lug is contracted inward in the radius, the leaf is also displaced inward in the radius accordingly, and the air shaft is reduced in diameter, so that the wound sheet roll can be pulled out, and the centerless roll Is completed.
【０００４】[0004]
【発明が解決しようとする課題】実開平４−３１７５３
号に開示の従来技術では巻き取り時において隣接リーフ
間においてシャフト全長に渡ってシャフト軸線と平行に
延びる隙間が円周方向に等間隔に複数（リーフの数分）
形成される。即ち、隙間の部分ではシートは支持されて
おらず、換言すれば、シートを支持しない隙間の部分が
シャフトの全長に亘ってシャフト軸線と平行に延びてい
る。トイレットペーパのように巻き取り張力が低い場合
は内周での面圧も高くはならなためリーフ間の隙間はロ
ール内周面での型崩れの原因には実質的にならない。と
ころが、実開平４−３１７５３号に開示のエアーシャフ
トにより樹脂シートを巻き取ろうとすると、樹脂シート
の場合は巻き取り張力が高いため、シートの巻き取り面
が前記隙間部分において円弧状にならず、直線状態にな
っていまい、真円形状の巻き取り円筒面を形成できな
い。また、巻き取り中のシートペーパの張力が内周側の
シートペーパを半径方向に押すように作用されるので、
前記隙間に位置する部分ではロールの内周面に全長に亘
って延びる数条の突起ができてしまう。このような全長
に亘る突起部はたとえ内周面にあったとしても目立つた
め製品の見栄えは悪くなるため、商品としての価値が損
なわれる。そのため、実開平４−３１７５３号に開示の
技術は樹脂シートの無心ロールの形成のために適してい
るとはいえなかった。Problems to be Solved by the Invention
In the prior art disclosed in the above item, at the time of winding, a plurality of gaps extending in parallel with the shaft axis over the entire length of the shaft between adjacent leaves at equal intervals in the circumferential direction (for the number of leaves)
It is formed. That is, the sheet is not supported in the gap portion, in other words, the gap portion that does not support the sheet extends parallel to the shaft axis over the entire length of the shaft. When the winding tension is low as in the case of toilet paper, the surface pressure on the inner periphery cannot be increased, so that the gap between the leaves does not substantially cause the shape collapse on the inner peripheral surface of the roll. However, when the resin sheet is wound by the air shaft disclosed in Japanese Utility Model Application Laid-Open No. 4-31753, the winding tension of the resin sheet is high, so that the winding surface of the sheet does not have an arc shape in the gap portion. It may not be in a straight line, and a perfect circular winding cylindrical surface cannot be formed. In addition, since the tension of the sheet paper during winding is applied so as to press the inner side of the sheet paper in the radial direction,
In the portion located in the gap, several projections extending over the entire length are formed on the inner peripheral surface of the roll. Even if such protrusions over the entire length are conspicuous even if they are on the inner peripheral surface, the appearance of the product deteriorates, and the value as a product is impaired. Therefore, the technique disclosed in Japanese Utility Model Application Laid-Open No. 4-31753 cannot be said to be suitable for forming a coreless roll of a resin sheet.
【０００５】従来の技術の問題点としてリーフ間の隙間
はシャフト軸線に沿って全長に渡って延びている。その
ため、シャフトを巻取りローラに押付けて巻回する場合
に、隙間の部分においてはシャフトは巻取りローラと接
触する円周面が全く欠如するため、巻き始めにおいては
回転中にシャフトが隙間の部位に来るたびにシャフトは
上下動し円滑な回転がなしえず、高速回転で運転するこ
とができず、また大きな騒音を発生していた。[0005] A problem with the prior art is that the gap between the leaves extends the entire length along the shaft axis. Therefore, when the shaft is pressed against the take-up roller and wound, the shaft has no circumferential surface in contact with the take-up roller at the gap portion. Each time it came, the shaft moved up and down, making it impossible to rotate smoothly, making it impossible to operate at high speed, and generating loud noise.
【０００６】本発明の第１の目的はこのような実情に鑑
み、食品包装フィルム（ラップシート）などの連続シー
トを紙管などのコアを用いることなくしかも真円形状の
内周面の形状を実質的に維持しつつ巻取りうるようにす
ることにある。In view of such circumstances, a first object of the present invention is to form a continuous sheet such as a food wrapping film (wrap sheet) without using a core such as a paper tube, and to form a perfectly circular inner peripheral surface. It is to be able to take up while substantially maintaining.
【０００７】また、本発明の第２の目的は、巻取軸を駆
動ローラの外周面に押付けることにより巻取軸にシート
を巻き取る場合において、シャフトを伸縮可能とするた
めのリーフ間における隙間の存在にかかわらず、シャフ
トをいつも円周面において駆動ローラに当接せしめるよ
うにし、これによりシャフトの回転を円滑とし、連続シ
ートの巻き取り巻き始めから高速で行いうるようにする
もものである。[0007] A second object of the present invention is to provide a space between leaves for allowing the shaft to expand and contract when the sheet is wound around the winding shaft by pressing the winding shaft against the outer peripheral surface of the drive roller. Regardless of the existence of the gap, the shaft is always brought into contact with the driving roller on the circumferential surface, so that the rotation of the shaft is smooth and the continuous sheet can be rotated at a high speed from the beginning. .
【０００８】また、本発明の第３の目的は、食品包装フ
ィルムなどの樹脂フィルムシートを紙管などのコアを用
いずにコアレス状に巻取る巻取軸において、前記巻取軸
に巻き取られた密着性を有する樹脂フィルムシートのロ
ールを巻き取り完了後に前記巻取軸から容易に抜き取り
うるようにすることである。A third object of the present invention is to provide a winding shaft for winding a resin film sheet such as a food packaging film in a coreless manner without using a core such as a paper tube. The purpose of the present invention is to make it possible to easily pull out a roll of a resin film sheet having good adhesion from the winding shaft after winding is completed.
【０００９】[0009]
【課題を解決するための手段】請求項１に記載の発明に
よれば、筒状軸体と筒状軸体内の膨張体と筒状軸体の外
側における複数のリーフとを具備し、前記複数のリーフ
の各々は軸線方向に延びると共に、複数のリーフは円周
方向におけるそれぞれの角度範囲を占めるように分割し
て配置され、前記膨張体の膨張時に前記リーフを半径外
方に拡開させるように膨張体とリーフとを協働させる協
働手段を備え、このリーフ拡開状態においてその外周に
連続シートをロール状に巻回し、膨張体の収縮により連
続シートのロールを抜去しうるシート用巻取軸におい
て、リーフの軸線方向縁部はシャフト軸線に沿って円周
方向にシフトされ、円周方向に隣接した一対のリーフの
対向縁部は相補的に対向したことを特徴とする連続シー
ト用コアレス巻取軸が提供される。According to the first aspect of the present invention, there is provided a cylindrical shaft body, an expanded body in the cylindrical shaft body, and a plurality of leaves outside the cylindrical shaft body. Each of the leaves extends in the axial direction, and the plurality of leaves are divided and arranged so as to occupy respective angular ranges in the circumferential direction, so that the leaves expand radially outward when the expandable body expands. A cooperating means for cooperating the inflatable body and the leaf, wherein the continuous sheet is wound around the outer periphery of the leaf in the expanded state of the leaf, and the roll of the continuous sheet can be removed by contraction of the inflatable body. The continuous sheet wherein the axial edges of the leaves are shifted in the circumferential direction along the shaft axis, and the opposing edges of a pair of circumferentially adjacent leaves are complementary to each other. Coreless winding shaft It is provided.
【００１０】請求項１の発明の作用効果を説明すると、
リーフの軸線方向縁部はシャフト軸線に沿って円周方向
にシフトしており、かつ円周方向に隣接したリーフの対
向縁部は相補的に対向している。そのため、膨張体の膨
張時の半径外方へのリーフの拡開の際にリーフ間の対抗
縁部間に隙間が形成されるも、この隙間はシャフトと軸
線に沿って円周方向にシフトしている。即ち、拡径時の
リーフ間の隙間の存在により隙間の部位においてシート
が面圧を受けないため、樹脂シート（ラップフィルム）
のように巻取り張力が相対的に高い場合は特に、この部
位が真円形状から外れうる（完成したロール内周におけ
るすじとなりうる）が、従来のようにリーフ間の隙間が
シャフト全長に亘ってシャフト軸線に沿って真直ぐでは
ないため、シートの無支持部分（隙間の部分）におい
て、シートが間隙に向けて押し込まれようとする力に対
して間隙の部位に対して軸線方向において隣接するリー
フの部分（シート支持部分）がシートを引張り上げるよ
うな作用を達成し、シートが溝に押し込まれるような力
は全体として減少される。そのため、巻取り時における
リーフ間の隙間部分における食い込みとしてのロールの
内周における突起状のすじが目立たなくなり、相対的な
美麗な内周面形状を提供することができ、ロール製品と
しての外観が損なわれる度合いが少なくなる効果があ
る。The function and effect of the first aspect of the invention will be described.
The axial edges of the leaves are circumferentially shifted along the shaft axis, and the opposing edges of the circumferentially adjacent leaves are complementary opposing. Therefore, a gap is formed between the opposing edges between the leaves when the leaves are expanded outward in a radial direction at the time of expansion of the expandable body, but this gap shifts in the circumferential direction along the shaft and the axis. ing. That is, since the sheet is not subjected to the surface pressure at the site of the gap due to the existence of the gap between the leaves at the time of diameter expansion, the resin sheet (wrap film)
In particular, when the winding tension is relatively high as in (1), this portion may deviate from a perfect circle shape (it may become a streak on the inner periphery of the completed roll), but the gap between the leaves extends over the entire shaft length as in the related art. Is not straight along the shaft axis, so that in the unsupported portion (gap portion) of the sheet, the leaf is axially adjacent to the gap portion against the force of the sheet being pushed into the gap. (Sheet supporting portion) achieves the action of pulling up the sheet, and the force for pushing the sheet into the groove is reduced as a whole. For this reason, protrusion-like streaks on the inner periphery of the roll as bites in gaps between the leaves during winding are less noticeable, and it is possible to provide a relatively beautiful inner peripheral surface shape, and the appearance as a roll product is improved. This has the effect of reducing the degree of damage.
【００１１】また、リーフ拡径時の隙間がシャフト軸線
に沿って円周方向にシフト（シフト形状としては凹凸、
鋸刃、山形など各種の形態をとりうる）配置しているた
め、このシャフトを駆動ローラの外周に圧接させて、連
続シートをロール状に巻き取る場合に、シャフトは駆動
ローラに接触する円周面をシャフトの軸線方向における
或る位置において必ず有している。そのため、隙間の存
在にかかわらずシャフトは全体としてはどの角度位置に
おいても駆動ローラと実質的に円周面で接触するため、
円滑な回転が得られ、巻取り時の振動が少なくなり、巻
き始めからの高速回転が可能となり、効率を高めること
ができ、かつ作動騒音が少ない利点がある。Further, the gap at the time of leaf diameter expansion shifts in the circumferential direction along the axis of the shaft.
(It can take various forms such as saw blades and mountain shapes.) When this shaft is pressed against the outer periphery of the drive roller and the continuous sheet is wound into a roll, the shaft contacts the drive roller. It always has a surface at a certain position in the axial direction of the shaft. Therefore, regardless of the presence of the gap, the shaft as a whole is substantially in contact with the driving roller on any circumferential position at any angular position,
There are advantages that smooth rotation is obtained, vibration during winding is reduced, high-speed rotation from the beginning of winding is possible, efficiency can be increased, and operation noise is reduced.
【００１２】更に、ロールへの巻取り完了に際しては膨
張体、即ち、リーフへの半径外方への加圧を解消させる
ことによりロールをシャフトより容易に引き抜くことが
できる。Further, when the winding on the roll is completed, the roll can be easily pulled out of the shaft by eliminating the radially outward pressure on the expanding body, that is, the leaf.
【００１３】請求項２に記載の発明によれば、請求項１
に記載の発明において、円周方向に分割された各リーフ
は軸線方向の全長に亘って一体であることを特徴とする
連続シート用コアレス巻取軸が提供される。According to the second aspect of the present invention, the first aspect is provided.
In the invention described in (1), a coreless winding shaft for a continuous sheet is provided, wherein each leaf divided in the circumferential direction is integrated over the entire length in the axial direction.
【００１４】請求項２の発明の作用・効果を説明する
と、リーフは円周方向には分割されているが、各リーフ
は長手方向においてはその全長に亘って１枚ものであ
る。そのため、構造的には単純となり、部品点数も少な
いことからコスト的には有利となる。The operation and effect of the second aspect of the present invention will be described. The leaves are divided in the circumferential direction, but each leaf is one in the longitudinal direction over its entire length. Therefore, the structure is simple and the number of parts is small, which is advantageous in cost.
【００１５】請求項３に記載の発明によれば、請求項１
に記載の発明において、各リーフは軸線方向においても
多数に分割されていることを特徴とする連続シート用コ
アレス巻取軸が提供される。According to the invention described in claim 3, according to claim 1 of the present invention,
In the invention described in (1), a coreless winding shaft for a continuous sheet is provided, wherein each leaf is divided into a large number also in the axial direction.
【００１６】請求項３の発明の作用効果を説明すると、
リーフを円周方向に分割すると共に軸線方向にも分割構
造となっている。軸線方向への分割構造としたため、各
リーフ毎に取り付けが行われ、１個当たりの嵌合部（芯
合の必要な部分）は少なくなるため、一体とした場合と
比較して部品精度の管理が楽となり、かつ取付作業も容
易となる利点がある。The function and effect of the invention of claim 3 will be described.
The leaf is divided in the circumferential direction and has a dividing structure in the axial direction. Because of the split structure in the axial direction, mounting is performed for each leaf, and the number of fitting parts (portion requiring core alignment) per piece is reduced. This is advantageous in that the mounting is easy and the mounting work is also easy.
【００１７】請求項４に記載の発明によれば、請求項１
に記載の発明において、前記各リーフの外表面に、樹脂
フィルムに対し低接着性の材料層を形成されたことを特
徴とする連続シート用コアレス巻取軸が提供される。樹
脂フィルムの接触面においてシャフトに低接着性の材料
層を有していることを特徴とする連続シート用コアレス
巻取軸が提供される。According to the invention described in claim 4, according to claim 1,
The present invention provides a coreless winding shaft for a continuous sheet, wherein a material layer having low adhesion to a resin film is formed on an outer surface of each leaf. A coreless winding shaft for a continuous sheet is provided, wherein the shaft has a low-adhesion material layer on a contact surface of a resin film.
【００１８】請求項４の発明の作用効果を説明すると、
リーフ表面の低接着性の材料層によりポリエチレンのよ
うに密着性の高いフィルムを巻取軸により巻回した場合
にあってもフィルムとの接触面においてシャフト表面は
低接着材料より構成されているため、シャフトからのロ
ールの離脱を容易に行うことができる。The operation and effect of the invention of claim 4 will be described.
Even when a film with high adhesion like polyethylene is wound by a winding shaft due to the low adhesion material layer on the leaf surface, the shaft surface is made of low adhesion material at the contact surface with the film The roll can be easily detached from the shaft.
【００１９】請求項５に記載の発明によれば、請求項１
に記載の発明において、リーフの縁部は巻取軸の軸線方
向と直交する直交方向延設部分を有しており、同部分は
円周方向において隣接するリーフの対向した直交方向延
設部分と当接していることを特徴とする連続シート用コ
アレス巻取軸が提供される。According to the invention of claim 5, according to claim 1,
In the invention described in the above, the edge portion of the leaf has an orthogonally extending portion orthogonal to the axial direction of the winding shaft, and the portion is an opposed orthogonally extending portion of the leaf adjacent in the circumferential direction. There is provided a coreless winding shaft for a continuous sheet, which is in contact with the coreless winding shaft.
【００２０】請求項５の発明の作用効果を説明すると、
リーフの縁部における直交方向延設部分は円周方向にお
いて隣接するリーフの対向した直交方向延設部分と当接
しているため、巻取軸の拡縮に関わらず隣接するリーフ
間は軸線方向にいつも当接した関係にあり、この部分で
は巻取軸の拡径状態においても隙間が残らない効果があ
る。The function and effect of the invention of claim 5 will be described.
Since the orthogonally extending portion at the edge of the leaf is in contact with the opposing orthogonally extending portion of the adjacent leaf in the circumferential direction, the distance between the adjacent leaves is always in the axial direction regardless of the expansion and contraction of the winding shaft. There is an effect that no gap remains in this portion even when the winding shaft is in the expanded state.
【００２１】[0021]
【発明の実施の形態】以下、本発明の巻取軸について図
面を参照しながら説明する。本発明の巻取軸はリーフタ
イプの空気圧拡縮型巻取軸をベースとしたものであり、
その基本構造を図１及び図２を参照して説明する。図１
はリーフを拡張した巻き取り時の巻取軸を示す断面図で
あり、図２はリーフを縮小した抜き取り時の巻取軸を示
す断面図である。同図において符合１は巻取軸を示し、
この巻取軸１は円筒状の軸体２内に空気の注入によって
膨張され空気の抜き取りによって収縮されるゴム製の弾
性チューブからなる膨張体３を配設し、軸体２に形成さ
れたラグ孔４に遊嵌され、膨張体３の膨張又は収縮作用
によってラグ板５を介して軸体２の半径方向に向けて進
退移動される数列のラグ６を設け、ラグ６に断面形状が
円弧状で軸方向に延びる複数（４個）のリーフ７を前記
各列のラグ６に個別に固定して構成されている。空気の
注入によって膨張体３が膨張され、この膨張によって半
径外方向に向けてラグ６が進出移動され、その結果リー
フ７は半径外方に拡径される。この拡径状態を図１で示
し、このとき各リーフ７は完全円の円周上に位置してお
り、この状態においてラップフィルムなどのシートのロ
ール状巻取りが実施される。拡径状態ではリーフ７は円
周上に位置しているが、円周方向に隣接したリーフ７間
の縁部は隙間Ｌを持って対向している。円周方向には隙
間Ｌは等間隔（９０度毎）に配置される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a winding shaft according to the present invention will be described with reference to the drawings. The winding shaft of the present invention is based on a leaf-type pneumatic expansion / contraction winding shaft,
The basic structure will be described with reference to FIGS. FIG.
FIG. 2 is a cross-sectional view illustrating a winding shaft when the leaf is expanded, and FIG. 2 is a cross-sectional view illustrating the winding shaft when the leaf is reduced. In the figure, reference numeral 1 indicates a winding shaft,
The take-up shaft 1 is provided with an inflatable body 3 made of a rubber elastic tube which is inflated by injecting air and contracted by extracting air into a cylindrical shaft body 2, and a lug formed on the shaft body 2. Several rows of lugs 6 are loosely fitted in the holes 4 and moved forward and backward in the radial direction of the shaft body 2 via the lug plate 5 by the expansion or contraction action of the expansion body 3, and the lug 6 has an arc-shaped cross section. And a plurality of (four) leaves 7 extending in the axial direction are individually fixed to the lugs 6 in each row. The inflation body 3 is inflated by the injection of air, and the lug 6 advances and moves outward in the radial direction due to the inflation, and as a result, the leaf 7 expands in the radially outward direction. This expanded state is shown in FIG. 1. At this time, each leaf 7 is located on the circumference of a complete circle, and in this state, a roll-like winding of a sheet such as a wrap film is performed. In the expanded state, the leaves 7 are located on the circumference, but the edges between the leaves 7 adjacent in the circumferential direction face each other with a gap L therebetween. In the circumferential direction, the gaps L are arranged at equal intervals (every 90 degrees).
【００２２】膨張体３からの空気の排出によってラグ６
を介して複数の膨張体３が収縮され、この収縮によって
進出位置から後退移動されたラグ６を介してリーフ７が
実線位置まで縮小され、この状態を図２で示す。図１の
拡径状態（図２では拡径状態の巻取軸１の外周を一点鎖
線Ｃにて表す）と図２の縮径状態との径差を利用してロ
ールを抜き取ることができる。膨張体３への空気の注入
及び排出は巻取軸１の一端側に設けられた図示しない吸
排口を介して行なわれる。このようにリーフタイプの巻
取軸は、リーフ７が拡張される巻き取り時には、隣接さ
れる各リーフ７の側縁部の間隙溝（Ｌ）が拡大されるよ
うに構成されている。巻取軸１の軸体２、ラグ板５を含
むラグ６、及びリーフ７は金属製である。ラグ６に固定
されるリーフ７は、ラグ６と別体のものをビス止めなど
の固着手段で固定下ものでよく、ラグ６と一体に形成し
たものでもよい。The discharge of the air from the expansion body 3 causes the lug 6
, The plurality of inflatable bodies 3 are contracted, and by this contraction, the leaves 7 are reduced to the solid line positions via the lugs 6 moved backward from the advanced position, and this state is shown in FIG. The roll can be pulled out by using the diameter difference between the diameter-expanded state in FIG. 1 (the outer circumference of the winding shaft 1 in the diameter-expanded state in FIG. 2 is indicated by a chain line C) and the diameter-reduced state in FIG. Injection and discharge of air to and from the inflatable body 3 are performed through a suction port (not shown) provided at one end of the winding shaft 1. As described above, the leaf-type winding shaft is configured such that the gap groove (L) at the side edge portion of each adjacent leaf 7 is enlarged when the leaf 7 is wound up. The shaft body 2 of the winding shaft 1, the lug 6 including the lug plate 5, and the leaf 7 are made of metal. The leaf 7 fixed to the lug 6 may be fixed separately from the lug 6 by fixing means such as a screw, or may be formed integrally with the lug 6.
【００２３】次ぎに、本発明の特徴であるリーフ７の構
造について図３を加えて説明する。図３は巻取軸１の全
体斜視図を下側に示し、その上側にそのうちの１枚のリ
ーフ７を斜視図にて示している。各リーフ７の軸方向に
沿う両側縁部を軸方向に均等に区分けされた複数の突出
縁部８と後退縁部９とに交互に形成し、突出縁部８には
軸方向に延びる突辺８Ａと該突辺８Ａに交わる両突出側
辺８Ｂを有し、後退縁部８には軸方向に延びる底辺９Ａ
と該底辺９Ａと交わる両後退側辺９Ｂを有する。即ち、
各リーフ７の軸線方向の縁部は巻取軸１の長手方向軸線
に沿って円周方向に交互にシフトしており、図５の
（イ）に示すようにコの字状の凹凸形状を呈している。
そして、円周方向に隣接するリーフ７間の対向縁部は相
補的な関係にあり、図１〜図３に示す第１の実施形態に
おいては隣接される前記両側各リーフ７の突出縁部８と
後退縁部９とは互いに差込まれる関係にある。従って、
巻取軸１の拡径時に隣接するリーフ７間に形成される隙
間Ｌは図３及び図５（イ）に示すように巻取軸１の軸線
方向に沿って交互に反対方向にシフトしている。Next, the structure of the leaf 7, which is a feature of the present invention, will be described with reference to FIG. FIG. 3 shows a whole perspective view of the winding shaft 1 on the lower side, and one leaf 7 thereof in a perspective view on the upper side. Both edges along the axial direction of each leaf 7 are alternately formed with a plurality of projecting edges 8 and retreating edges 9 equally divided in the axial direction, and the projecting edges 8 have projecting sides extending in the axial direction. 8A and both protruding sides 8B intersecting with the protruding side 8A, and the receding edge 8 has a bottom side 9A extending in the axial direction.
, And both receding sides 9B intersecting with the bottom 9A. That is,
The edges of each leaf 7 in the axial direction are alternately shifted in the circumferential direction along the longitudinal axis of the winding shaft 1, and have a U-shaped uneven shape as shown in FIG. Present.
The opposing edges between the circumferentially adjacent leaves 7 are in a complementary relationship, and in the first embodiment shown in FIGS. And the receding edge 9 are in a relationship of being inserted into each other. Therefore,
The gap L formed between the adjacent leaves 7 when the diameter of the winding shaft 1 is increased is shifted alternately in the opposite direction along the axial direction of the winding shaft 1 as shown in FIGS. I have.
【００２４】また、図３に示したリーフの実施形態にお
いては、突出縁部８の両側突出側辺８Ｂと後退縁部９の
両後退側辺９Ｂはリーフ７の円周方向に沿って延設して
いる。すなわち、突出縁部８の両側突出側辺８Ｂを軸方
向に延ばされた軸方向に延ばされた前記突辺８Ａと直交
させ、後退縁部９の両後退側辺９Ｂを軸方向に延ばされ
た前記底辺９Ａと直交させ形成してある。突出縁部８と
後退縁部９の各側辺８Ｂ、９Ｂをこのように形成したこ
とにより、リーフ７の拡張時であっても前記各側辺８
Ｂ、９Ｂの間に間隙溝が拡大形成されないように構成し
ている。即ち、円周方向に隣接したリーフ間において側
辺８Ｂと９Ｂとは巻取軸の拡縮に関わらずいつも近接
（又は接触）した関係を維持するためこの部分において
実質的に隙間が形成されることがない。In the embodiment of the leaf shown in FIG. 3, both the projecting sides 8B of the projecting edge portion 8 and the receding sides 9B of the receding edge portion 9 extend along the circumferential direction of the leaf 7. are doing. That is, both the projecting side edges 8B of the projecting edge 8 are orthogonal to the projecting edge 8A extending in the axial direction, and both the receding side edges 9B of the receding edge 9 extend in the axial direction. It is formed so as to be orthogonal to the flattened bottom 9A. By forming the side edges 8B, 9B of the protruding edge portion 8 and the retreating edge portion 9 in this way, even when the leaf 7 is expanded, the side edges 8B, 9B are formed.
The gap groove is not formed between B and 9B. That is, between the leaves adjacent in the circumferential direction, the side edges 8B and 9B always maintain a close (or contact) relationship regardless of the expansion and contraction of the winding shaft, so that a gap is substantially formed in this portion. There is no.
【００２５】巻取り時に回転駆動される巻取軸１の回転
駆動は適宜手段により行われるが、図４に示すように、
巻取軸１の回転駆動を巻取軸の軸端（図示しない）を回
転自在に軸支し、巻取軸１の外周面をローラ10, 10'
（その一方（例えばローラ１０）は駆動ローラ）の外周
面に圧接的に外接せしめ、その上を押えローラ１１にて
押付け、この駆動ローラ１０の回転駆動力を介して巻取
軸１を回転駆動させ、巻取軸１の回りに矢印のように送
られてくるラップフィルム１２などのシートを巻回す
る。１４はシートが所定外径のロールに巻き取られた状
態を示し、１´はそのときの巻取軸の位置、１１´はロ
ール完成時における押えローラの位置を示す。巻取りロ
ーラ10, 10'に圧接させてシートの巻取りを行う際に、
一つの横断面においては図１に示すように円周方向に沿
ってリーフ間に４個の隙間Ｌが存在する。しかしなが
ら、隙間Ｌの存在はシートをロール状に巻取るに際し型
崩れの原因とならない。即ち、図５（イ）は図１〜図３
の第１実施形態における巻取軸１の拡開時における軸線
方向におけるリーフ間の隙間Ｌの分布を模式的に示す。
この実施形態においては、隙間Ｌは巻取軸１の軸線１´
に沿って円周方向に交互に反対方向にシフトしている。
換言すれば、リーフ間の隙間Ｌは巻取軸１の軸線の全長
には延びていない。そのため、図４のように巻取軸１を
ローラ10, 10'に周面接触させてシート１２を巻き取る
際に、巻取軸１は横断面では必ずリーフ間に隙間Ｌを有
しているがこの隙間Ｌは巻取軸１の全長に亘って軸線に
平行ではないため、巻取軸１の軸線方向でみれば巻取軸
１は巻取りローラ10, 10'に円周面で接触する部位を必
ず有している。そのため、リーフ７のこの部位において
巻取軸１は駆動ロール10, 10'のロール面と実質的に円
と円とで圧接する状態となり、リーフ間に軸方向の全長
に延びる隙間を形成された従来のリーフタイプの巻き取
りシフトと異なり、間隙溝Ｌに起因した振動が実質的に
なく、スムースな回転が得られるため巻取り当初からの
高速巻取りが可能であり、かつ騒音の問題もない。The winding drive of the winding shaft 1 that is driven to rotate at the time of winding is performed by appropriate means. As shown in FIG.
The rotation drive of the winding shaft 1 is rotatably supported on the shaft end (not shown) of the winding shaft, and the outer peripheral surface of the winding shaft 1 is
(One of them (for example, the roller 10 is a driving roller) is pressed against the outer peripheral surface of the driving roller), and the outer surface of the driving roller is pressed by a pressing roller 11. Then, the sheet such as the wrap film 12 sent as shown by the arrow around the winding shaft 1 is wound. Numeral 14 indicates a state in which the sheet has been wound on a roll having a predetermined outer diameter, 1 'indicates the position of the winding shaft at that time, and 11' indicates the position of the pressing roller when the roll is completed. When the sheet is wound by being pressed against the winding rollers 10 and 10 ',
In one cross section, there are four gaps L between the leaves along the circumferential direction as shown in FIG. However, the presence of the gap L does not cause the shape to be lost when the sheet is wound into a roll. That is, FIG.
4 schematically shows the distribution of gaps L between leaves in the axial direction when the winding shaft 1 is expanded in the first embodiment.
In this embodiment, the gap L is the axis 1 ′ of the winding shaft 1.
Are alternately circumferentially shifted along the opposite direction.
In other words, the gap L between the leaves does not extend over the entire length of the axis of the winding shaft 1. Therefore, as shown in FIG. 4, when the winding shaft 1 is brought into circumferential contact with the rollers 10, 10 'to wind up the sheet 12, the winding shaft 1 always has a gap L between leaves in a cross section. However, since the gap L is not parallel to the axis over the entire length of the winding shaft 1, the winding shaft 1 contacts the winding rollers 10, 10 'on the circumferential surface when viewed in the axial direction of the winding shaft 1. It always has a part. For this reason, at this portion of the leaf 7, the winding shaft 1 comes into pressure contact with the roll surfaces of the drive rolls 10 and 10 'substantially by circles, and a gap extending between the leaves over the entire length in the axial direction is formed. Unlike the conventional leaf-type winding shift, there is substantially no vibration caused by the gap groove L and smooth rotation can be obtained, so that high-speed winding can be performed from the beginning of winding, and there is no problem of noise. .
【００２６】各リーフ７の巻きつけ表面には、ガラス繊
維布などのメッシュ状の布にポリ（4）ふっ化エチレン
などの摩擦係数が小さく接着性に乏しい樹脂を含浸させ
た積層テープを張りつけて積層形成しておくのが好まし
い。これにより、密着性を有する樹脂フィルムシートと
接着され易い金属性のリーフ７の巻きつけ表面を前記樹
脂フィルムシートが軽く接着され、離脱させる力が働い
た際には容易に離脱されるように構成し、前記リーフの
巻きつけ表面に巻き取られた密着性を有する樹脂フィル
ムシートのロールをリーフ７の縮小時に巻取軸から容易
に抜き取りうるようにしている。A laminating tape made by impregnating a mesh-like cloth such as a glass fiber cloth with a resin having a small coefficient of friction such as poly (4) ethylene fluoride and a low adhesion is applied to the surface of each leaf 7 wound. It is preferable to form a laminate. Thereby, the resin film sheet is lightly adhered to the winding surface of the metallic leaf 7 which is easily adhered to the resin film sheet having adhesiveness, and is easily detached when a detaching force is applied. Then, the roll of the resin film sheet having the adhesive property wound on the winding surface of the leaf can be easily removed from the winding shaft when the leaf 7 is reduced.
【００２７】また、各リーフ７の外周に前記積層テープ
と同様な材質からなる外層チューブを被せて、前記積層
テープの場合と同様に、密着性を有する樹脂フィルタと
接着され易い金属性リーフ７の巻きつけ表面を前記樹脂
シートが軽く接着され、離脱させる力が働いた際には容
易に離脱されるように構成し、リーフ７の巻きつけ表面
に巻き取られた密着性を有する樹脂フィルムシートのロ
ールをリーフ７の縮小時に巻取軸から容易に抜き取りう
るように構成しても良い。このように、前記積層テープ
と同様な材質からなる外層チューブをリーフ７の巻取り
表面に被せた構造であっても、前記外層チューブが前記
間隙溝Ｌの位置において直線状になりにくく、またこの
外装チューブが前記間隙溝Ｌに食い込まれ難いことは、
樹脂フィルムシートの巻きつけで説明したのと同様であ
る。An outer tube made of the same material as that of the laminated tape is put on the outer periphery of each leaf 7, and the metallic leaf 7 is easily adhered to the resin filter having adhesiveness as in the case of the laminated tape. The wrapping surface is configured such that the resin sheet is lightly adhered to the wrapping surface and is easily released when a releasing force is applied. The roll may be configured to be easily extracted from the winding shaft when the leaf 7 is reduced. As described above, even when the outer tube made of the same material as that of the laminated tape is covered on the winding surface of the leaf 7, the outer tube is less likely to be linear at the position of the gap groove L. The fact that the outer tube is hard to bite into the gap groove L
This is the same as described for winding the resin film sheet.
【００２８】図５（ロ）（ハ）(ニ)は円周方向に隣接す
るリーフ７間の対向長手方向縁部の別形態も示されてお
り、（ロ）では長手方向縁部が鋸刃状となっており、隣
接するリーフ間の対抗長手方向縁部は相補的形状をな
し、拡径時の隙間Ｌの大きさはどの部位においても実質
的に一定となっている。そして、（イ）の場合と同様に
軸線と直交する方向には隣接リーフ７間はいつも当接し
た関係にあり、この方向には隙間が残らない配置となっ
ている。 (ハ)の例ではリーフ７の長手方向縁部は展開
状態において直線的であるが巻取軸１の軸線に対して傾
斜している。しかしながら、拡径時における隣接リーフ
７の対向長手方向縁部間の隙間Ｌの間隔は一定である。
（ニ）ではリーフ間の隙間は山形である。図５の
（ロ）、（ハ）及び（ニ）の隙間配置においても（イ）
で説明したと同様にシートロールの巻回のため巻取軸１
の拡開時のリーフ７間の隙間Ｌは巻取軸１の軸線１´方
向においては全長に亘って軸線と平行ではないため、巻
取軸１を巻取りロール10, 10'（図４）に押付けてシー
トをロール巻きする場合において巻取軸１はその軸線１
´方向では巻取りロール10, 10'と必ず円周面上で接触
する部分が存在するため、ロール巻きにおける内周中空
部の凸条が目立たなくなり、また、巻取り開始時から円
滑な回転が得られるため騒音や振動を伴いことなく高速
回転を行うことができる効果がある。FIGS. 5 (b), (c) and (d) also show other forms of the opposed longitudinal edges between the circumferentially adjacent leaves 7, in which the longitudinal edges are saw blades. The opposing longitudinal edges between adjacent leaves have complementary shapes, and the size of the gap L at the time of diameter expansion is substantially constant at any portion. As in the case of (a), adjacent leaves 7 are always in contact with each other in a direction orthogonal to the axis, and no gap remains in this direction. In the example of (c), the longitudinal edge of the leaf 7 is linear in the deployed state, but is inclined with respect to the axis of the winding shaft 1. However, the gap L between the opposing longitudinal edges of the adjacent leaf 7 at the time of diameter expansion is constant.
In (d), the gap between the leaves is mountain-shaped. 5 (b), (c) and (d) also in the gap arrangement (a)
Winding shaft 1 for winding a sheet roll in the same manner as described in
The gap L between the leaves 7 at the time of the expansion is not parallel to the axis in the direction of the axis 1 'of the winding shaft 1 over the entire length thereof, so that the winding shaft 1 is wound with the winding rolls 10, 10' (FIG. 4). In the case where the sheet is rolled while being pressed against the
In the ′ direction, there is always a portion that comes into contact with the winding rolls 10 and 10 ′ on the circumferential surface, so that the ridges of the inner peripheral hollow portion in the roll winding become inconspicuous, and smooth rotation from the start of winding. Therefore, there is an effect that high-speed rotation can be performed without accompanying noise and vibration.
【００２９】図６〜図８は別実施形態を示す。第１の実
施形態では図３に示すようにリーフの分割を円周方向の
みで、巻取軸１の軸線方向においてはその全長に渡って
リーフは一体形成として形成される。これに対して、図
６〜図８の実施形態ではリーフ７０は円周方向のみなら
ず、巻取軸１の軸線方向においても分割されている。図
８はリーフ７０の円周方向及び軸線方向の分割構造を斜
視図によって表している。図７において、板５０は軸体
２０の内周において円周方向に等間隔に離間して配置さ
れ、図６に示すように当板５０には案内部５２がビス５
３により固定される。軸体２０はスロット20-1を有し、
このスロット20-1に案内部５２は半径方向には摺動自在
にかつ軸線方向にはガタを実質的に生ずることなく嵌合
されている。リーフ７０は案内部５２にビス７１により
固定されている。図７において３０はゴムチューブなど
の膨張体であり、その外周が当板５０と当接している。6 to 8 show another embodiment. In the first embodiment, as shown in FIG. 3, the leaves are divided only in the circumferential direction, and in the axial direction of the winding shaft 1, the leaves are integrally formed over the entire length. On the other hand, in the embodiment of FIGS. 6 to 8, the leaf 70 is divided not only in the circumferential direction but also in the axial direction of the winding shaft 1. FIG. 8 is a perspective view showing a circumferentially and axially divided structure of the leaf 70. 7, the plate 50 is arranged at equal intervals in the circumferential direction on the inner periphery of the shaft body 20. As shown in FIG.
3 fixed. The shaft body 20 has a slot 20-1,
The guide portion 52 is slidably fitted in the slot 20-1 in the radial direction and substantially without backlash in the axial direction. The leaf 70 is fixed to the guide part 52 by a screw 71. In FIG. 7, reference numeral 30 denotes an inflatable body such as a rubber tube, the outer periphery of which is in contact with the abutment plate 50.
【００３０】この実施形態において、膨張体３０の膨張
は当板５０及び案内部５２を介し対応のリーフ７０に伝
達され、リーフ７０は半径外方に拡開した位置をとる。
図７は巻取軸１の拡径状態を示す。拡径状態において
は、円周方向に隣接したリーフ７０間に隙間Ｌが形成さ
れるが、隙間Ｌは第１の実施形態と同様に巻取軸の軸線
方向に沿っては交互に反対方向にシフトし、隙間Ｌは巻
取軸の軸線全長には延びないため、巻取軸１はその軸線
方向に沿って必ず円周面が駆動ローラと面接触している
ため、第１の実施形態と同様にラップフィルムをロール
に巻き取ったときのロール内周のすじ状の突起の発生を
軽減することができるし、巻き始めからの円滑な回転が
保障され、これらの作用・効果も他の実施形態のそれと
同様である。In this embodiment, the expansion of the expansion body 30 is transmitted to the corresponding leaf 70 via the abutment plate 50 and the guide portion 52, and the leaf 70 assumes a position which is expanded radially outward.
FIG. 7 shows an expanded state of the winding shaft 1. In the expanded state, a gap L is formed between the leaves 70 that are circumferentially adjacent to each other. However, the gap L is alternately formed in the opposite direction along the axial direction of the winding shaft as in the first embodiment. Since the gap L does not extend over the entire length of the axis of the winding shaft, the winding shaft 1 always contacts the drive roller along the axial direction. Similarly, when the wrap film is wound on a roll, the occurrence of streak-like projections on the inner circumference of the roll can be reduced, smooth rotation from the start of winding can be ensured, and these actions and effects can be performed in other ways. It is similar to that of the form.
【００３１】そして図６から図８の第２の実施形態では
リーフ７０は円周方向だけでなく軸線方向にも分割され
ており、一個一個軸体２０に装着してゆく構成であるた
め、製作時のビス53, 71の軸孔などの精度管理が楽であ
るため、製造及び組立が容易となる作用・効果がある。In the second embodiment shown in FIGS. 6 to 8, the leaf 70 is divided not only in the circumferential direction but also in the axial direction, and the leaf 70 is mounted on the shaft body 20 one by one. Since the precision control of the shaft holes of the screws 53 and 71 at the time is easy, there is an operation and effect that the manufacture and assembly are facilitated.
【図１】図１はこの発明の第１の実施形態における巻取
軸の拡径状態の断面図である。FIG. 1 is a cross-sectional view of a winding shaft according to a first embodiment of the present invention in a state where the diameter of the winding shaft is expanded.
【図２】図２は図１の巻取軸の縮径状態の断面図であ
る。FIG. 2 is a sectional view of the take-up shaft of FIG. 1 in a reduced diameter state.
【図３】図３は図１の巻取軸を一つのリーフと共に示す
概略的斜視図である。FIG. 3 is a schematic perspective view showing the winding shaft of FIG. 1 together with one leaf.
【図４】図４のはこの発明の巻取軸によるラップフィル
ムなどのシートのロール巻取方式を概略的に示す図であ
る。FIG. 4 is a view schematically showing a roll winding method for a sheet such as a wrap film by a winding shaft according to the present invention.
【図５】図５はこの発明の巻取軸におけるリーフの縁部
の形状のバリエーションの例を模式的に示す図である。FIG. 5 is a diagram schematically showing an example of a variation in the shape of the edge of the leaf in the winding shaft of the present invention.
【図６】図６はこの発明の第２の実施形態の巻取軸の部
分的軸方向断面図である。FIG. 6 is a partial axial sectional view of a winding shaft according to a second embodiment of the present invention.
【図７】図７は図６のVII−VII線に沿って表されるこの
発明の巻取軸の横断面図である。7 is a cross-sectional view of the winding shaft of the present invention, taken along line VII-VII of FIG.
【図８】図８は第２の実施形態の巻取軸をリーフを部分
的に取外した状態で示す概略的斜視図である。FIG. 8 is a schematic perspective view showing the winding shaft according to the second embodiment with leaves partially removed.
１…巻取軸 ２…軸体 ３…膨張体 ５…ラグ板 ６…ラグ ７…リーフ ８…突出縁部 ９…後退縁部 10, 10'…巻取りローラ １２…ラップフィルム ２０…軸体 20-1…スロット ３０…膨張体 ５０…当板 ５２…案内部 ７０…リーフ ７１…ビス Ｌ…間隙溝 DESCRIPTION OF SYMBOLS 1 ... Winding shaft 2 ... Shaft 3 ... Expansion body 5 ... Lug plate 6 ... Lug 7 ... Leaf 8 ... Projecting edge 9 ... Retreating edge 10, 10 '... Winding roller 12 ... Wrap film 20 ... Shaft 20 -1 ... Slot 30 ... Expansion body 50 ... Abutment plate 52 ... Guiding part 70 ... Leaf 71 ... Screw L ... Gap groove
Claims (5)
体の外側における複数のリーフとを具備し、前記複数の
リーフの各々は軸線方向に延びると共に、複数のリーフ
は円周方向におけるそれぞれの角度範囲を占めるように
分割して配置され、前記膨張体の膨張時に前記リーフを
半径外方に拡開させるように膨張体とリーフとを協働さ
せる協働手段を備え、このリーフ拡開状態においてその
外周に連続シートをロール状に巻回し、膨張体の収縮に
より連続シートのロールを抜去しうるシート用巻取軸に
おいて、各リーフの軸線方向縁部はシャフト軸線に沿っ
て円周方向にシフトされ、円周方向に隣接した一対のリ
ーフの対向縁部は相補的に対向したことを特徴とする連
続シート用コアレス巻取軸。1. A cylindrical shaft, an expanded body in the cylindrical shaft, and a plurality of leaves outside the cylindrical shaft, wherein each of the plurality of leaves extends in an axial direction, and the plurality of leaves are Cooperating means arranged to be divided so as to occupy respective angular ranges in the circumferential direction, and to cooperate the inflatable body and the leaf so as to expand the leaf radially outward when the inflatable body is inflated. In this leaf expanded state, a continuous sheet is wound around the outer periphery of the roll in a roll shape, and in the sheet winding shaft from which the roll of the continuous sheet can be pulled out by contraction of the expansion body, the axial edge of each leaf is aligned with the shaft axis. A coreless winding shaft for a continuous sheet, wherein a pair of leafs adjacent to each other in the circumferential direction are complementarily opposed to each other.
向に分割された各リーフは軸線方向の全長に亘って一体
であることを特徴とする連続シート用コアレス巻取軸。2. The coreless winding shaft for a continuous sheet according to claim 1, wherein the leaves divided in the circumferential direction are integrated over the entire length in the axial direction.
フは軸線方向においても複数に分割されていることを特
徴とする連続シート用コアレス巻取軸。3. The coreless winding shaft for a continuous sheet according to claim 1, wherein each leaf is divided into a plurality of parts also in an axial direction.
リーフの外表面に、樹脂フィルムに対し低接着性の材料
層が形成されたことを特徴とする連続シート用コアレス
巻取軸。4. The coreless winding shaft for a continuous sheet according to claim 1, wherein a material layer having low adhesiveness to a resin film is formed on an outer surface of each leaf.
の縁部は巻取軸の軸線方向と直交する直交方向延設部分
を有しており、同部分は円周方向において隣接するリー
フの対向した直交方向延設部分と当接していることを特
徴とする連続シート用コアレス巻取軸。5. The invention according to claim 1, wherein the edge portion of the leaf has an orthogonally extending portion orthogonal to the axial direction of the winding shaft, and the edge portion of the leaf adjacent to the leaf in the circumferential direction. A coreless winding shaft for a continuous sheet, wherein said coreless winding shaft is in contact with an opposing orthogonally extending portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001027929A JP3554541B2 (en) | 2000-08-23 | 2001-02-05 | Coreless winding shaft for continuous sheet |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000252256 | 2000-08-23 | ||
| JP2000-252256 | 2000-08-23 | ||
| JP2001027929A JP3554541B2 (en) | 2000-08-23 | 2001-02-05 | Coreless winding shaft for continuous sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002137856A true JP2002137856A (en) | 2002-05-14 |
| JP3554541B2 JP3554541B2 (en) | 2004-08-18 |
Family
ID=26598294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001027929A Expired - Fee Related JP3554541B2 (en) | 2000-08-23 | 2001-02-05 | Coreless winding shaft for continuous sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3554541B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003054844A (en) * | 2001-08-08 | 2003-02-26 | Pneumatic Industries Co Ltd | Tape winding shaft |
| JP2005329518A (en) * | 2004-05-21 | 2005-12-02 | Kurenooton Kk | Polishing method and grinding tool for polishing |
| WO2007066494A1 (en) * | 2005-12-09 | 2007-06-14 | Lintec Corporation | Sheet take-up shaft, take-up method, and take-up device |
| CN110304478A (en) * | 2019-08-01 | 2019-10-08 | 常熟市益诚精密机械有限公司 | A kind of shell fabric rolling driving device that Computerized flat knitting machine is assembled into multiple accessory |
-
2001
- 2001-02-05 JP JP2001027929A patent/JP3554541B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003054844A (en) * | 2001-08-08 | 2003-02-26 | Pneumatic Industries Co Ltd | Tape winding shaft |
| JP4625209B2 (en) * | 2001-08-08 | 2011-02-02 | ニューマチック工業株式会社 | Tape take-up shaft |
| JP2005329518A (en) * | 2004-05-21 | 2005-12-02 | Kurenooton Kk | Polishing method and grinding tool for polishing |
| WO2007066494A1 (en) * | 2005-12-09 | 2007-06-14 | Lintec Corporation | Sheet take-up shaft, take-up method, and take-up device |
| JP2007161352A (en) * | 2005-12-09 | 2007-06-28 | Lintec Corp | Sheet winding shaft and winding method |
| CN110304478A (en) * | 2019-08-01 | 2019-10-08 | 常熟市益诚精密机械有限公司 | A kind of shell fabric rolling driving device that Computerized flat knitting machine is assembled into multiple accessory |
| CN110304478B (en) * | 2019-08-01 | 2020-10-30 | 常熟市益诚精密机械有限公司 | Fabric winding driving device assembled by multiple accessories for computerized flat knitting machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3554541B2 (en) | 2004-08-18 |
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