JP4753162B2 - Suction roller - Google Patents

Suction roller Download PDF

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JP4753162B2
JP4753162B2 JP2006155428A JP2006155428A JP4753162B2 JP 4753162 B2 JP4753162 B2 JP 4753162B2 JP 2006155428 A JP2006155428 A JP 2006155428A JP 2006155428 A JP2006155428 A JP 2006155428A JP 4753162 B2 JP4753162 B2 JP 4753162B2
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peripheral surface
hollow cylinder
inner peripheral
suction
fixed support
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JP2007320747A (en
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雄 片岡
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株式会社片岡機械製作所
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Description

本発明は、プラスチックフィルム等の帯状シートを吸着しながら搬送するサクションローラに関する。   The present invention relates to a suction roller that conveys a belt-like sheet such as a plastic film while adsorbing it.

従来、サクションローラとしては、例えば特開平２−１５８５５４号公報の第３図、第４図に開示されているように、多数の貫通孔を備えた回転可能な中空筒と、この中空筒に一定の隙間を介して内装された固定中仕切体とから構成されたものが知られている。この固定中仕切体には、吸引ブロワに連絡する減圧経路が設けられ、その円周上に帯状シートが配置される範囲を軸方向に切欠いた切欠き部が形成され、切欠き部は連絡口を介して減圧経路に連絡されている。このサクションローラでは、帯状シートが接触した状態で切欠き部内の空気が連絡口を介して減圧経路に吸引される。一方、帯状シートが配置されていない範囲では、中空筒の吸引孔から隙間を介して切欠き部に流入する空気は少量であるので、切欠き部は減圧状態となり、帯状シートは吸引される。   Conventionally, as a suction roller, as disclosed in, for example, FIGS. 3 and 4 of Japanese Patent Laid-Open No. 2-158554, a rotatable hollow cylinder having a large number of through-holes and a fixed hollow cylinder are provided. What is comprised from the fixed inside partition body equipped through the clearance gap of is known. The fixed partition is provided with a decompression path that communicates with the suction blower, and a notch is formed on the circumference of the circumference where the belt-like sheet is disposed, and the notch is a communication port. To the decompression route. In this suction roller, the air in the notch is sucked into the decompression path through the communication port in a state where the belt-like sheet is in contact. On the other hand, in the range where the belt-like sheet is not arranged, since the air flowing into the cutout portion through the gap from the suction hole of the hollow cylinder is small, the cutout portion is in a reduced pressure state, and the beltlike sheet is sucked.

ところが、上述の従来のサクションローラにあっては、切欠き部が、より減圧状態になるに従って、切欠き部と大気との差が大きくなるため、中空筒が固定中仕切体の方向にたわみ、中空筒と固定中仕切体とが接触し、中空筒が回転不良や磨耗、発塵等を起こす。   However, in the above-described conventional suction roller, as the notch becomes more decompressed, the difference between the notch and the atmosphere increases, so that the hollow cylinder bends in the direction of the fixed partition, The hollow cylinder comes into contact with the fixed partition, and the hollow cylinder causes rotation failure, wear, dust generation, and the like.

そこで、従来においては、例えば特開平０２−１５８５５４号公報の第１図及び第２図の実施例に示されるように、中空筒と固定中仕切体とが接触しないようにするために、固定中仕切体の略中央部の円周面上に、中空筒の内周面と接触する３個のローラ状の軸受を設けたものが提案されている。   Therefore, in the prior art, for example, as shown in the embodiment of FIGS. 1 and 2 of Japanese Patent Application Laid-Open No. 02-158554, in order to prevent the hollow cylinder from contacting the fixed partition, There has been proposed a structure in which three roller-shaped bearings that are in contact with the inner peripheral surface of the hollow cylinder are provided on the circumferential surface of the substantially central portion of the partition.

しかし、この中空筒中央部の内周面と接触する３個の軸受を設けたサクションローラでは、次のような問題を生じる。即ち、中空筒の長さが長い場合、軸受と接触する中空筒中央部の内周面を精度よく仕上げるのが非常に困難になり、また固定中仕切体の外周に軸受を設け、それを中空筒の内周面に精度よく嵌め合わせることができなくなって更に組み立てが極めて困難になるため、サクションローラが非常に高価なものになる。しかも、中空筒の内周面と固定中仕切り体の外周面との隙間を小さくすることができない。そのため、その隙間から空気が多く流入して吸引の効率が悪くなる。つまり必要な吸引力を得るには大容量のブロワが必要になる。更に、固定中仕切体の円周面上の軸受の回転体の外周面が、回転する中空筒の内周面と接触するので、その接触部分で摩耗による粉塵を発生して吸引停止中に中空筒の吸引孔を通じ中空筒の外周に飛散し易く、サクションローラ付近のクリーン度が低下し、帯状シートに粉塵が付着して帯状シートが不良品になる原因になる。帯状シートが、例えば光学用途のプラスチックフイルムの場合には格別にクリーン度の低下を回避する必要がある。
特開平０２−１５８５５４号公報 However, the suction roller provided with the three bearings that come into contact with the inner peripheral surface of the central portion of the hollow cylinder causes the following problems. That is, when the length of the hollow cylinder is long, it becomes very difficult to accurately finish the inner peripheral surface of the hollow cylinder central portion that comes into contact with the bearing, and a bearing is provided on the outer periphery of the fixed partition, and the hollow cylinder is made hollow. Since it becomes impossible to fit the inner peripheral surface of the cylinder with high accuracy and the assembly becomes extremely difficult, the suction roller becomes very expensive. In addition, the gap between the inner peripheral surface of the hollow cylinder and the outer peripheral surface of the fixed partition cannot be reduced. For this reason, a large amount of air flows from the gap, and the suction efficiency is deteriorated. In other words, a large capacity blower is required to obtain the required suction force. Furthermore, since the outer peripheral surface of the rotating body of the bearing on the circumferential surface of the fixed intermediate body is in contact with the inner peripheral surface of the rotating hollow cylinder, dust is generated due to wear at the contact portion, and the air is stopped while the suction is stopped. It easily scatters to the outer periphery of the hollow cylinder through the suction hole of the cylinder, the degree of cleanness near the suction roller is lowered, and dust adheres to the belt-like sheet, causing the belt-like sheet to become defective. In the case where the belt-like sheet is a plastic film for optical use, for example, it is necessary to avoid a special decrease in cleanliness.
Japanese Patent Laid-Open No. 02-158554

本発明は、外周面上の帯状シートを小容量の空気吸引源で効果的に吸引でき、しかも周辺のクリーン度の低下の原因にならない、加工組立が容易なサクションロールを提供することを課題としている。   It is an object of the present invention to provide a suction roll that can be sucked effectively with a small-capacity air suction source and that does not cause a reduction in the degree of cleanliness around the outer peripheral surface and is easy to process and assemble. Yes.

本発明は、帯状シートを中空筒の外周面に吸引しながら搬送するサクションローラであって、前記中空筒を回転可能に支持するための中空の一対の固定支持軸を備え、前記中空筒の外周面上の前記帯状シートの両縁より内側に中空筒の中央部を挟むように、夫々所定長さの吸引区域を設定し、この吸引区域内に多数の吸引孔を夫々一様又は略一様に分布するように設け、前記中空筒の内周の前記吸引区域より奥に、夫々前記中空筒の中央部分の内径より大きい内径を有する第１内周面を設け、前記中空筒の内周に、前記吸引区域を個々に含むように前記第１内周面の内径の大きさ以上の内径を有する第２内周面を夫々設け、前記中空筒の内周の前記第２内周面の外側端から当該中空筒端までの第３内周面の内径を、前記第２内周面の内径の大きさ以上とし、前記第１内周面に第１軸受保持環をしまりばめし、前記第１軸受保持環の内周に第１ころがり軸受の外輪を同心に装着し、前記固定支持軸の前記吸引区域に対応する箇所に孔を夫々設け、一対の仕切り板を、前記吸引区域に対応する箇所を挟むように配置して前記固定支持軸に固着すると共に、前記仕切り板の外周に、前記第２内周面に適合する外径を有しかつ外周面の一定範囲が切欠かれた内側円筒体を固設し、前記固定支持軸の先端部及び前記一対の仕切り板並びに内側円筒体を前記中空筒の中空部へ挿入して、前記固定支持軸の先端部を前記第１ころがり軸受の内輪の内周面に嵌め合わせると共に、前記内側円筒体を前記第２内周面にすきまばめし、前記固定支持軸の後端付近に第２ころがり軸受の内輪を嵌め合せ、前記第２ころがり軸受の外輪を、前記中空筒の端部に装着した第２軸受保持環により保持したことを特徴とする。   The present invention is a suction roller for conveying a belt-like sheet while sucking it to the outer peripheral surface of the hollow cylinder, comprising a pair of hollow fixed support shafts for rotatably supporting the hollow cylinder, and the outer periphery of the hollow cylinder A suction area of a predetermined length is set so as to sandwich the central part of the hollow cylinder inside both edges of the belt-like sheet on the surface, and a number of suction holes are uniformly or substantially uniform in the suction area. A first inner peripheral surface having an inner diameter larger than the inner diameter of the central portion of the hollow cylinder is provided behind the suction area of the inner circumference of the hollow cylinder, and is provided on the inner circumference of the hollow cylinder. A second inner peripheral surface having an inner diameter equal to or larger than the inner diameter of the first inner peripheral surface so as to individually include the suction section, and an outer periphery of the second inner peripheral surface of the inner periphery of the hollow cylinder The inner diameter of the third inner peripheral surface from the end to the end of the hollow cylinder is made larger than the inner diameter of the second inner peripheral surface. The first bearing retaining ring is tightly fitted to the first inner circumferential surface, the outer ring of the first rolling bearing is mounted concentrically on the inner circumference of the first bearing retaining ring, and the suction of the fixed support shaft Holes are provided at locations corresponding to the areas, respectively, and a pair of partition plates are disposed so as to sandwich the locations corresponding to the suction areas and fixed to the fixed support shaft, and the second partition plate is disposed on the outer periphery of the partition plates. An inner cylindrical body having an outer diameter suitable for the inner peripheral surface and having a certain range of the outer peripheral surface cut out is fixed, and the distal end portion of the fixed support shaft, the pair of partition plates, and the inner cylindrical body are connected to the hollow cylinder. The tip of the fixed support shaft is fitted to the inner peripheral surface of the inner ring of the first rolling bearing, and the inner cylindrical body is loosely fitted to the second inner peripheral surface. Fit the inner ring of the second rolling bearing near the rear end of the support shaft. The outer ring of the second rolling bearing, characterized by being held by the second bearing retaining ring mounted to an end of the hollow tube.

本発明によれば、帯状シートを従来ように全幅にわたって吸引せず、所定長さの吸引区域を中空筒の中央部を挟んで２個所に分けて設け、左右２個所で吸引して中空筒の外周面に対し帯状シートがスリップするのを防ぐ。そして吸引区域を２個所に分けて設けたので、中空筒外周面の吸引不要部分に位置する吸引孔を塞ぐための内側円筒体の長さも吸引区域の長さ応じて短くすることができる。また内側円筒体を固着した固定支持軸は、中空筒の第１内周面にしまりばめした第１軸受保持環、及び中空筒の端部に装着した第２軸受保持環により、夫々第１ころがり軸受及び第２ころがり軸受を介して短い支持間隔で中空筒と正確に同心に保持することができる。それゆえ、内側円筒体の撓み量が小さくなると共に、中空筒の撓みの影響が小さくなる構造になっており、中空筒の内周面と内側円筒体の外周面との隙間を非常に小さくすることができる。したがって、小容量の吸引源で効率よく帯状シートを吸引することができる。また吸引区域が左右に分かれているので、従来のように中空筒の中央部分の内周面を高精度に仕上げる必要が無く、中空筒の内周の加工が従来に比べて簡単に、かつ精度良く加工できる。また仕切り板及び内側円筒体を固着した固定支持軸の両端部にころがり軸受を装着し、内側と外側の軸受保持環でころがり軸受を保持し、その軸受保持環を中空筒の内周に挿入して内側軸受保持環を第１内周面に嵌め合わせると共に、外側軸受保持環を第３内周面には嵌め合わせて固定することにより、固定支持軸及び内側円筒体を中空筒に同心に装着できるので、組立も簡単に行うことができる。更に、中空筒の内周面に装着した第１軸受保持持環と固定支持軸との間に第１ころがり軸受を装着するので、外径の小さな市販のころがり軸受を用いることができ、ころがり接触部分での摩滅が非常に少なくなる。しかも第１軸受保持環及び固定支持軸の先端部は仕切り板により吸引孔から隔離されているので、ころがり軸受からの摩耗粉が吸引孔を通じて周辺に飛散する心配がない。それゆえ、ころがり接触部分からの摩耗粉の飛散により周辺のクリーン度が低下し、帯状シートが汚損されるのを防ぐことができる。   According to the present invention, the belt-like sheet is not sucked over the entire width as in the prior art, and a suction area of a predetermined length is provided in two places across the central portion of the hollow cylinder, and sucked at two left and right positions to Prevents the belt-like sheet from slipping against the outer peripheral surface. Since the suction area is divided into two portions, the length of the inner cylindrical body for closing the suction hole located in the suction unnecessary portion of the outer peripheral surface of the hollow cylinder can be shortened according to the length of the suction area. The fixed support shaft to which the inner cylindrical body is fixed is firstly provided by a first bearing retaining ring fitted on the first inner peripheral surface of the hollow cylinder and a second bearing retaining ring attached to the end of the hollow cylinder. It can hold | maintain exactly concentric with a hollow cylinder with a short support space | interval via a rolling bearing and a 2nd rolling bearing. Therefore, the amount of bending of the inner cylindrical body is reduced and the influence of the bending of the hollow cylinder is reduced, and the gap between the inner peripheral surface of the hollow cylinder and the outer peripheral surface of the inner cylindrical body is made extremely small. be able to. Therefore, the belt-like sheet can be efficiently sucked with a small-capacity suction source. In addition, since the suction area is divided into left and right, there is no need to finish the inner peripheral surface of the central part of the hollow cylinder with high accuracy as in the conventional case, and the inner peripheral processing of the hollow cylinder is easier and more accurate than before. Can be processed well. Roller bearings are attached to both ends of the fixed support shaft to which the partition plate and the inner cylindrical body are fixed, the rolling bearings are held by the inner and outer bearing retaining rings, and the bearing retaining rings are inserted into the inner periphery of the hollow cylinder. By fitting the inner bearing retaining ring to the first inner peripheral surface and fixing the outer bearing retaining ring to the third inner peripheral surface, the fixed support shaft and the inner cylindrical body are mounted concentrically on the hollow cylinder. As a result, assembly can be easily performed. Further, since the first rolling bearing is mounted between the first bearing holding ring mounted on the inner peripheral surface of the hollow cylinder and the fixed support shaft, a commercially available rolling bearing having a small outer diameter can be used, and the rolling contact is achieved. There is very little wear on the part. In addition, since the first bearing retaining ring and the tip of the fixed support shaft are separated from the suction hole by the partition plate, there is no fear that the abrasion powder from the rolling bearing is scattered around the suction hole. Therefore, it is possible to prevent the surrounding sheet from being deteriorated due to the scattering of the wear powder from the rolling contact portion, and the belt-like sheet from being damaged.

図１は本発明の一実施例に係るサクションローラの概略正面図、図２は、図１に示す右側の吸引区域付近の中空筒の縦断面図、図３は右側の吸引区域付近のサクションローラの縦断面図、図４はサクションローラの左側の吸引区域付近のたて断面図、図５は図１のＡ−Ａ矢視断面図である。   1 is a schematic front view of a suction roller according to an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of a hollow cylinder in the vicinity of the right suction section shown in FIG. 1, and FIG. 3 is a suction roller in the vicinity of the right suction section. 4 is a vertical cross-sectional view of the vicinity of the suction area on the left side of the suction roller, and FIG. 5 is a cross-sectional view taken along the line AA in FIG.

図１に示すように、サクションローラ１は、帯状シートＳを中空筒２の外周面に吸引しながら搬送するものであって、中空筒２の両端部分を回転可能に支持するための中空の一対の固定支持軸３、４を備えている。そして中空筒２の外周面上の帯状シートＳの両縁Ｓｅ、Ｓｅより内側に中空筒２の中央部を挟むように、夫々所定長さの吸引区域Ｂ、Ｂを設定し、この吸引区域Ｂ内に多数の吸引孔５を夫々一様又は略一様に分布するように設けている。そして中空筒２の内周の吸引区域Ｂより奥に、夫々中空筒２の中央部分の内径より大きい内径を有する第１内周面２ａを設け、中空筒２の内周に、吸引区域Ｂを個々に含むように第１内周面２ａの内径の大きさ以上の内径を有する第２内周面２ｂを夫々設け、中空筒２の内周の第２内周面２ｂの外側端から当該中空筒２の端までの第３内周面２ｃの内径を、第２内周面２ｂの内径の大きさ以上としている。そして第１内周面２ａに第１軸受保持環６をしまりばめし、第１軸受保持環６の内周に第１ころがり軸受７の外輪７ａを同心に装着している。そして固定支持軸３、４の吸引区域Ｂに対応する箇所に孔８を夫々設け、一対の仕切り板９、９を、吸引区域Ｂに対応する箇所を挟むように配置して固定支持軸３、４に固着すると共に、仕切り板９、９の外周に、第２内周面２ｂに適合する外径を有しかつ外周面の一定範囲が切欠かれた内側円筒体１０を固設している。そして固定支持軸３、４の先端部及び一対の仕切り板並９、９びに内側円筒体１０を中空筒２の中空部へ挿入して、固定支持軸３、４の先端部３ａ、４ａを第１ころがり軸受７の内輪７ｂの内周面に嵌め合わせると共に、内側円筒体１０を第２内周面２ｂにすきまばめしている。そして固定支持軸３、４の後端付近に第２ころがり軸受１１の内輪１１ｂを嵌め合せ、この第２ころがり軸受１１の外輪１１ａを、中空筒２の端部に装着した第２軸受保持環１２により保持している。   As shown in FIG. 1, the suction roller 1 conveys the belt-like sheet S while sucking it to the outer peripheral surface of the hollow cylinder 2, and is a hollow pair for rotatably supporting both end portions of the hollow cylinder 2. Fixed support shafts 3 and 4 are provided. Then, suction zones B and B having a predetermined length are set so as to sandwich the central portion of the hollow tube 2 inside both edges Se and Se of the strip-shaped sheet S on the outer peripheral surface of the hollow tube 2, respectively. A large number of suction holes 5 are provided so as to be uniformly or substantially uniformly distributed therein. A first inner peripheral surface 2 a having an inner diameter larger than the inner diameter of the central portion of the hollow cylinder 2 is provided behind the suction area B on the inner periphery of the hollow cylinder 2, and the suction area B is provided on the inner periphery of the hollow cylinder 2. A second inner peripheral surface 2b having an inner diameter equal to or larger than the inner diameter of the first inner peripheral surface 2a is provided so as to be included individually, and the hollow is formed from the outer end of the second inner peripheral surface 2b of the inner periphery of the hollow cylinder 2 The inner diameter of the third inner peripheral surface 2c up to the end of the cylinder 2 is set to be equal to or larger than the inner diameter of the second inner peripheral surface 2b. The first bearing retaining ring 6 is tightly fitted on the first inner peripheral surface 2 a, and the outer ring 7 a of the first rolling bearing 7 is concentrically mounted on the inner periphery of the first bearing retaining ring 6. And the hole 8 is provided in the location corresponding to the suction area B of the fixed support shafts 3 and 4, respectively, and the pair of partition plates 9 and 9 are arranged so as to sandwich the location corresponding to the suction area B. 4, and an inner cylindrical body 10 having an outer diameter suitable for the second inner peripheral surface 2 b and having a certain range of the outer peripheral surface cut out is fixed to the outer periphery of the partition plates 9 and 9. Then, the distal end portions of the fixed support shafts 3 and 4 and the pair of partition plates 9 and 9 and the inner cylindrical body 10 are inserted into the hollow portions of the hollow tube 2, and the distal end portions 3 a and 4 a of the fixed support shafts 3 and 4 are inserted into the first ends. The inner cylindrical body 10 is fitted to the second inner peripheral surface 2b while being fitted to the inner peripheral surface of the inner ring 7b of the rolling bearing 7. Then, the inner ring 11b of the second roller bearing 11 is fitted in the vicinity of the rear ends of the fixed support shafts 3 and 4, and the outer ring 11a of the second roller bearing 11 is fitted to the end of the hollow cylinder 2 to the second bearing holding ring 12. Is held by.

第１軸受保持環６は、それを第１内周面２ａにしまりばめするために、この実施例では中空筒２の一端から中空部に挿入して第１内周面２ａに圧入してある。この第１軸受保持環６は、第１ころがり軸受７の外輪７ａを嵌めて保持する環状のハウジング部材１３と、第１ころがり軸受７の中心軸線方向の動きを拘束するための環状のカバー１４を備えている。   In this embodiment, the first bearing retaining ring 6 is inserted into the hollow portion from one end of the hollow cylinder 2 and press-fitted into the first inner circumferential surface 2a in order to fit the first bearing retaining ring 6 to the first inner circumferential surface 2a. is there. The first bearing retaining ring 6 includes an annular housing member 13 for fitting and holding the outer ring 7a of the first rolling bearing 7 and an annular cover 14 for restraining the movement of the first rolling bearing 7 in the central axis direction. I have.

第１軸受保持環６の内周に第１ころがり軸受７の外輪７ａを装着するには、第１ころがり軸受７の外輪７ａをハウジング部材１３の内周面に嵌め、カバー１４を取付け、ハウジング部材１３の外周面を第１軸受保持環６の内周面に嵌め合せ、ハウジング部材１３の鍔部１３ａとカバー１４の鍔部１４ａとを重なった状態でボルト１５により第１軸受保持環６に固着する。   In order to mount the outer ring 7a of the first rolling bearing 7 on the inner circumference of the first bearing retaining ring 6, the outer ring 7a of the first rolling bearing 7 is fitted to the inner circumferential surface of the housing member 13, and the cover 14 is attached. The outer peripheral surface of 13 is fitted to the inner peripheral surface of the first bearing retaining ring 6, and is fixed to the first bearing retaining ring 6 with a bolt 15 in a state where the flange portion 13 a of the housing member 13 and the flange portion 14 a of the cover 14 are overlapped. To do.

固定支持軸３、４は、先端部に第１ころがり軸受７の内輪９ａの内径に適合する外径の外周面３ａ、４ａを有し、後端付近に第２ころがり軸受１１の内輪１１ａの内径に適合する外径の外周面３ｂ、４ｂを有する。内側円筒体８の外周面は中空筒２の第２内周面２ｂに対してすきまばめの関係になるように仕上げてある。図３に示す固定支持軸３は、後端部が図示しないホースを介して、例えばリングブロワからなる空気の吸引源に接続されており、図４に示す固定支持軸４の後端は密閉されているが、固定支持軸３、４の先端は夫々空気が通過できるように解放してある。   The fixed support shafts 3 and 4 have outer peripheral surfaces 3a and 4a having outer diameters that match the inner diameter of the inner ring 9a of the first rolling bearing 7 at the front ends, and the inner diameter of the inner ring 11a of the second rolling bearing 11 near the rear end. The outer peripheral surfaces 3b and 4b have an outer diameter suitable for the above. The outer peripheral surface of the inner cylindrical body 8 is finished so as to have a clearance fit relationship with the second inner peripheral surface 2b of the hollow cylinder 2. The fixed support shaft 3 shown in FIG. 3 has a rear end connected to an air suction source made of, for example, a ring blower via a hose (not shown), and the rear end of the fixed support shaft 4 shown in FIG. 4 is sealed. However, the tips of the fixed support shafts 3 and 4 are released so that air can pass therethrough.

第２軸受保持環１２の外周面は中空筒２の第３内周面２ｃに適合する外径に仕上げ、その外周面の外側に、中空筒２の外径と同じ外径の鍔部１２ａを設けている。第２軸受保持環１２を中空筒２の端部に装着するには、固定支持軸３の先端部を第１ころがり軸受７の内輪７ａに嵌めた後、第２軸受保持環１２を固定支持軸３の後端付近に外挿し、第２軸受保持環１２の外周面を中空筒２の第３内周面２ｃに嵌め合せてボルト１６により中空筒２に固定し、第２ころがり軸受１２の内輪１２ｂを、固定支持軸３の後端付近の外周面３ａに嵌め合せると共に、第２ころがり軸受１１の外輪１１ａを第２軸受保持環１２の内周面に嵌め合せる。その後、右側の第２ころがり軸受１１の外輪１１ａを右側の第２軸受保持環１２に長手方向に移動しないように拘束するために、図３に示すようにカバー１７をボルト１８で第２軸受保持環１２に固定する。また、図４に示すように左側の第２軸受保持環１２の外側の側面にはプーリ１９がボルト２０により固着してあり、プーリ１９には中空筒２に回転駆動力を伝達するためのベルト２１が掛けてある。プーリ１９を第２軸受保持環１２に固着すると、第２ころがり軸受１１の外輪１１ａが第２軸受保持環１２に長手方向に移動しないように拘束される。また左右の第２ころがり軸受１１の内輪１１ｂを固定支持軸３に長手方向に移動しないように拘束するために、カラー２２を固定支持軸３の外周面３ｂ、固定支持軸４の外周面４ｂに嵌めて止めねじ２３で固定する。第１ころがり軸受７及び第２ころがり軸受１１は、クリーン度低下阻止対策上シールドつきものが望ましい。   The outer peripheral surface of the second bearing retaining ring 12 is finished to an outer diameter suitable for the third inner peripheral surface 2c of the hollow cylinder 2, and a flange portion 12a having the same outer diameter as the outer diameter of the hollow cylinder 2 is provided outside the outer peripheral surface. Provided. In order to mount the second bearing retaining ring 12 on the end of the hollow cylinder 2, the distal end of the fixed support shaft 3 is fitted to the inner ring 7 a of the first rolling bearing 7, and then the second bearing retaining ring 12 is fixed to the fixed support shaft. 3 is inserted in the vicinity of the rear end, the outer peripheral surface of the second bearing retaining ring 12 is fitted to the third inner peripheral surface 2c of the hollow cylinder 2 and fixed to the hollow cylinder 2 by the bolt 16, and the inner ring of the second rolling bearing 12 is fixed. 12 b is fitted to the outer peripheral surface 3 a near the rear end of the fixed support shaft 3, and the outer ring 11 a of the second rolling bearing 11 is fitted to the inner peripheral surface of the second bearing holding ring 12. Thereafter, in order to restrain the outer ring 11a of the second roller bearing 11 on the right side from moving in the longitudinal direction on the second bearing holding ring 12 on the right side, the cover 17 is held by the bolt 18 as shown in FIG. Fix to ring 12. As shown in FIG. 4, a pulley 19 is fixed to the outer side surface of the left second bearing retaining ring 12 by a bolt 20, and a belt for transmitting a rotational driving force to the hollow cylinder 2 is attached to the pulley 19. 21 is hung. When the pulley 19 is fixed to the second bearing holding ring 12, the outer ring 11 a of the second rolling bearing 11 is constrained by the second bearing holding ring 12 so as not to move in the longitudinal direction. Further, in order to restrain the inner ring 11 b of the left and right second rolling bearings 11 from moving in the longitudinal direction to the fixed support shaft 3, the collar 22 is attached to the outer peripheral surface 3 b of the fixed support shaft 3 and the outer peripheral surface 4 b of the fixed support shaft 4. Fit and fix with set screw 23. The first roller bearing 7 and the second roller bearing 11 are preferably shielded to prevent a decrease in cleanliness.

図１に示すように、固定支持軸３、４の各後端部は、機枠に設けた把持具２４、２５より固定して保持する。   As shown in FIG. 1, the rear end portions of the fixed support shafts 3 and 4 are fixed and held by gripping tools 24 and 25 provided on the machine frame.

図２に示すように吸引孔５は、この実施例の場合、夫々中空筒２を錐で貫通して形成したものであり、中空筒２の円周方向に等間隔に配置すると共に、中空筒２の長手方向に一定の間隔で配置し、隣り合う吸引孔５は、千鳥状に並ぶように中空筒２の中心軸線のまわりに互いに一定角度だけ回転して配置してある。なお、吸引孔５は、空気を通すことができれば、その形状や大きさは問わず、また吸引区域内に、ほぼ均等に分布するように配置されていればよい。またこの実施例では、中空筒２の外径（直径）は０．５２メートル、中空筒２の長さは７．５メートル、各吸引区域Ｂの長さは０．６メートル、吸引区域Ｂの隣り合う端までの相互間隔は４メートルであるが、これらは、帯状シートの幅や材質等の条件に応じて多様に変わり得る。   As shown in FIG. 2, in this embodiment, the suction holes 5 are formed by penetrating the hollow cylinders 2 with cones, and are arranged at equal intervals in the circumferential direction of the hollow cylinders 2. The suction holes 5 adjacent to each other are arranged at regular intervals in the longitudinal direction of 2 and are arranged so as to rotate by a predetermined angle around the central axis of the hollow cylinder 2 so as to be arranged in a staggered manner. The suction holes 5 are not limited in shape and size as long as air can pass through them, and may be arranged so as to be distributed almost evenly in the suction area. Further, in this embodiment, the outer diameter (diameter) of the hollow cylinder 2 is 0.52 meters, the length of the hollow cylinder 2 is 7.5 meters, the length of each suction section B is 0.6 meters, The distance between the adjacent ends is 4 meters, but these can be variously changed according to conditions such as the width and material of the belt-like sheet.

上述のように構成されたサクションローラ１により帯状シートＳを搬送するには、ベルト２１を介しプーリ２０に動力を伝達して中空筒２を回転駆動する。それと同時に固定支持軸３の後端部から図示しない空気吸引源によって空気を吸引する。そうすると、左側の内側円筒体１０内の空気は固定支持軸４の孔８から固定支持軸４の中空部、中空筒２の中央の中空部、右側の固定支持軸３の中空部を通じて吸い出され、右側の内側円筒体１０の内部の空気は、固定支持軸３の孔８から固定支持軸３の中空部を通じて吸い出され、左右の内側円筒体１０の内部が負圧になって、帯状シートＳが内側円筒体１０の切り欠き部分にある吸引孔５に吸引される。   In order to convey the belt-like sheet S by the suction roller 1 configured as described above, power is transmitted to the pulley 20 via the belt 21 to rotationally drive the hollow cylinder 2. At the same time, air is sucked from the rear end portion of the fixed support shaft 3 by an air suction source (not shown). Then, the air in the left inner cylindrical body 10 is sucked out from the hole 8 of the fixed support shaft 4 through the hollow portion of the fixed support shaft 4, the hollow portion in the center of the hollow cylinder 2, and the hollow portion of the right fixed support shaft 3. The air inside the right inner cylindrical body 10 is sucked out from the hole 8 of the fixed support shaft 3 through the hollow portion of the fixed support shaft 3, and the inside of the left and right inner cylindrical bodies 10 becomes negative pressure, and the belt-like sheet S is sucked into the suction hole 5 in the cutout portion of the inner cylindrical body 10.

本発明の一実施例に係るサクションローラの正面図である。It is a front view of the suction roller concerning one example of the present invention. 図１に示す右側の吸引区域付近の中空筒の縦断面図である。It is a longitudinal cross-sectional view of the hollow cylinder near the suction area on the right side shown in FIG. 右側の吸引区域付近のサクションローラの縦断面図である。It is a longitudinal cross-sectional view of the suction roller near the suction area on the right side. 左側の吸引区域付近のサクションローラの縦断面図である。It is a longitudinal cross-sectional view of the suction roller near the suction area on the left side. 図３に示すサクションローラのＡ−Ａ矢視断面図である。It is AA arrow sectional drawing of the suction roller shown in FIG.

符号の説明Explanation of symbols

Ｂ 吸引区域
１ サクションローラ
２ 中空筒
２ａ 第１内周面
２ｂ 第２内周面
２ｃ 第３内周面
３ 固定支持軸
３ａ ジャーナル
３ｂ ジャーナル
４ 固定支持軸
４ａ ジャーナル
４ｂ ジャーナル
５ 吸引孔
６ 第１軸受保持環
７ 第１ころがり軸受
７ａ 外輪
７ｂ 内輪
８ 孔
９ 仕切り板
１０ 内側円筒体
１１ 第２ころがり軸受
１１ａ 外輪
１１ｂ 内輪
１２ 第２軸受保持環
１２ａ 鍔部
１３ ハウジング部材 B Suction area 1 Suction roller 2 Hollow cylinder 2a First inner peripheral surface 2b Second inner peripheral surface 2c Third inner peripheral surface 3 Fixed support shaft 3a Journal 3b Journal 4 Fixed support shaft 4a Journal 4b Journal 5 Suction hole 6 First bearing Holding ring 7 1st rolling bearing 7a Outer ring 7b Inner ring 8 Hole 9 Partition plate 10 Inner cylindrical body 11 Second rolling bearing 11a Outer ring 11b Inner ring 12 Second bearing holding ring 12a Hook 13 Housing member

Claims (1)

帯状シートを中空筒の外周面に吸引しながら搬送するサクションローラであって、前記中空筒を回転可能に支持するための中空の一対の固定支持軸を備え、前記中空筒の外周面上の前記帯状シートの両縁より内側に中空筒の中央部を挟むように、夫々所定長さの吸引区域を設定し、この吸引区域内に多数の吸引孔を夫々一様又は略一様に分布するように設け、前記中空筒の内周の前記吸引区域より奥に、夫々前記中空筒の中央部分の内径より大きい内径を有する第１内周面を設け、前記中空筒の内周に、前記吸引区域を個々に含むように前記第１内周面の内径の大きさ以上の内径を有する第２内周面を夫々設け、前記中空筒の内周の前記第２内周面の外側端から当該中空筒端までの第３内周面の内径を、前記第２内周面の内径の大きさ以上とし、前記第１内周面に第１軸受保持環をしまりばめし、前記第１軸受保持環の内周に第１ころがり軸受の外輪を同心に装着し、前記固定支持軸の前記吸引区域に対応する箇所に孔を夫々設け、一対の仕切り板を、前記吸引区域に対応する箇所を挟むように配置して前記固定支持軸に固着すると共に、前記仕切り板の外周に、前記第２内周面に適合する外径を有しかつ外周面の一定範囲が切欠かれた内側円筒体を固設し、前記固定支持軸の先端部及び前記一対の仕切り板並びに内側円筒体を前記中空筒の中空部へ挿入して、前記固定支持軸の先端部を前記第１ころがり軸受の内輪の内周面に嵌め合わせると共に、前記内側円筒体を前記第２内周面にすきまばめし、前記固定支持軸の後端付近に第２ころがり軸受の内輪を嵌め合せ、前記第２ころがり軸受の外輪を、前記中空筒の端部に装着した第２軸受保持環により保持したことを特徴とするサクションローラ。   A suction roller that conveys the belt-like sheet while sucking it to the outer peripheral surface of the hollow cylinder, comprising a pair of hollow fixed support shafts for rotatably supporting the hollow cylinder, and the above-mentioned on the outer peripheral surface of the hollow cylinder A suction area of a predetermined length is set so as to sandwich the central part of the hollow cylinder inside both edges of the belt-like sheet, and a large number of suction holes are distributed uniformly or substantially uniformly in the suction area. A first inner peripheral surface having an inner diameter larger than the inner diameter of the central portion of the hollow cylinder is provided behind the suction area of the inner circumference of the hollow cylinder, and the suction area is provided on the inner circumference of the hollow cylinder. Each having a second inner peripheral surface having an inner diameter equal to or larger than the inner diameter of the first inner peripheral surface, and the hollow cylinder from the outer end of the second inner peripheral surface of the inner periphery of the hollow cylinder. The inner diameter of the third inner peripheral surface up to the cylinder end is equal to or larger than the inner diameter of the second inner peripheral surface. The first bearing retaining ring is fitted on the first inner peripheral surface, the outer ring of the first rolling bearing is concentrically mounted on the inner periphery of the first bearing retaining ring, and corresponds to the suction area of the fixed support shaft. A hole is provided in each of the locations, and a pair of partition plates are disposed so as to sandwich the location corresponding to the suction area and fixed to the fixed support shaft, and the second inner peripheral surface is disposed on the outer periphery of the partition plate. An inner cylindrical body having an outer diameter suitable for the outer peripheral surface and a predetermined range of the outer peripheral surface is cut off, and the distal end portion of the fixed support shaft, the pair of partition plates, and the inner cylindrical body are connected to the hollow portion of the hollow cylinder. And inserting the tip end portion of the fixed support shaft into the inner peripheral surface of the inner ring of the first rolling bearing, and fitting the inner cylindrical body into the second inner peripheral surface. The inner ring of the second roller bearing is fitted near the rear end, and the second roller Suction roller which the outer race of the bearing, characterized by being held by the second bearing retaining ring mounted to an end of the hollow tube Ri.
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