JP7607907B2 - Induction heating roller device - Google Patents
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Description
本発明は、誘導発熱ローラ装置に関するものである。 The present invention relates to an induction heating roller device.
従来の誘導発熱ローラ装置としては、特許文献１に示すように、回転するローラと、当該ローラの各端部に連なる駆動軸と、ローラの内部に配置される誘導発熱機構と、当該誘導発熱機構の各端部を支持する支持ロッドを備え、支持ロッドの一方を自動調心機能を有する軸受機構を介して、前記駆動軸の一方の内面に支持する誘導発熱ローラ装置が考えられている。この軸受機構は、駆動軸の内側周面と支持ロッドの外側周面との間に設けられており、自動調心軸受と、当該自動調心軸受の外側又は内側に設けられた転がり軸受とから構成されている。 As shown in Patent Document 1, a conventional induction heating roller device is considered to have an induction heating roller device that includes a rotating roller, a drive shaft connected to each end of the roller, an induction heating mechanism disposed inside the roller, and support rods that support each end of the induction heating mechanism, with one of the support rods supported on the inner surface of one of the drive shafts via a bearing mechanism with an automatic centering function. This bearing mechanism is provided between the inner peripheral surface of the drive shaft and the outer peripheral surface of the support rod, and is composed of a self-aligning bearing and a rolling bearing provided on the outside or inside of the self-aligning bearing.
しかしながら、この軸受機構を用いた場合には、駆動軸を基準にすると、支持ロッドが細くなってしまい、支持ロッド内を通る誘導発熱機構に接続されたリード線が細くなってしまう。その結果、誘導発熱機構に所望の電力を供給することができず、ローラ本体の加熱温度が制約されてしまう。なお、自動調心軸受と転がり軸受とを一体化した特殊軸受を用いることも考えられるが、高価になってしまい、実用的ではない。 However, when this bearing mechanism is used, the support rod becomes thin when the drive shaft is used as the reference, and the lead wire connected to the induction heating mechanism that runs through the support rod also becomes thin. As a result, the desired power cannot be supplied to the induction heating mechanism, and the heating temperature of the roller body is restricted. It is also possible to use a special bearing that integrates a self-aligning bearing and a rolling bearing, but this would be expensive and impractical.
そこで本発明は、上記問題点を解決すべくなされたものであり、転がり軸受に調心機能を設けることなく支持軸の撓みを吸収しつつ、駆動軸内における支持軸の外径を大きくすることをその主たる課題とするものである。 The present invention was made to solve the above problems, and its main objective is to increase the outer diameter of the support shaft within the drive shaft while absorbing the deflection of the support shaft without providing an aligning function to the rolling bearing.
すなわち本発明に係る誘導発熱ローラ装置は、誘導発熱機構を支持する支持軸を、ローラ本体に固定された駆動軸の内部に挿通して、前記支持軸を軸受機構を介して前記駆動軸の内側周面に支持することにより、前記誘導発熱機構を前記ローラ本体の内部に保持する誘導発熱ローラ装置であって、前記軸受機構は、前記駆動軸及び前記支持軸の間に介在するスリーブと、前記駆動軸及び前記スリーブの間又は前記支持軸及び前記スリーブの間の一方に設けられる自動調心軸受と、前記駆動軸及び前記スリーブの間又は前記支持軸及び前記スリーブの間の他方に設けられる１又は複数の転がり軸受とを有し、前記自動調心軸受と前記１又は複数の転がり軸受とは軸方向にずれて配置されていることを特徴とする。 In other words, the induction heating roller device according to the present invention is an induction heating roller device in which a support shaft supporting an induction heating mechanism is inserted inside a drive shaft fixed to a roller body, and the support shaft is supported on the inner peripheral surface of the drive shaft via a bearing mechanism, thereby holding the induction heating mechanism inside the roller body, and the bearing mechanism has a sleeve interposed between the drive shaft and the support shaft, a self-aligning bearing provided either between the drive shaft and the sleeve or between the support shaft and the sleeve, and one or more rolling bearings provided on the other side between the drive shaft and the sleeve or between the support shaft and the sleeve, and the self-aligning bearing and the one or more rolling bearings are arranged offset in the axial direction.
このようなものであれば、駆動軸及び支持軸の間に設けたスリーブを介して自動調心軸受と１又は複数の転がり軸受とを軸方向にずらして配置しているので、自動調心軸受と転がり軸受とを径方向に配置した従来構成に比べて、駆動軸及び支持軸の間における軸受機構が径方向寸法を小さくすることができる。その結果、転がり軸受に調心機能を設けることなく支持軸の撓みを吸収しつつ、駆動軸内における支持軸の外径を大きくすることができる。また、転がり軸受に調心機能を設けることなく支持軸の撓みを吸収できるので、転がり軸受に支持軸の撓み（曲げ変形）が加わりにくくなり、転がり軸受を長寿命化することができる。さらに、支持軸の外径を大きくできるので、支持軸の内部を通じて外部に導出されるリード線を太くすることができ、誘導発熱機構に十分な電力を供給することができる。したがって、小径のローラ本体の加熱温度が制約されてしまうことを防ぐことができる。その他、自動調心軸受と転がり軸受とを一体化した特殊軸受を用いる必要がないので、コスト増大を抑えることができる。 In this case, the self-aligning bearing and one or more rolling bearings are arranged axially offset via a sleeve provided between the drive shaft and the support shaft, so that the radial dimension of the bearing mechanism between the drive shaft and the support shaft can be made smaller than in the conventional configuration in which the self-aligning bearing and the rolling bearing are arranged radially. As a result, the outer diameter of the support shaft within the drive shaft can be increased while absorbing the deflection of the support shaft without providing an aligning function to the rolling bearing. In addition, since the deflection of the support shaft can be absorbed without providing an aligning function to the rolling bearing, the deflection (bending deformation) of the support shaft is less likely to be applied to the rolling bearing, and the life of the rolling bearing can be extended. Furthermore, since the outer diameter of the support shaft can be increased, the lead wire led to the outside through the inside of the support shaft can be made thicker, and sufficient power can be supplied to the induction heating mechanism. Therefore, it is possible to prevent the heating temperature of the small-diameter roller body from being restricted. In addition, since there is no need to use a special bearing that integrates the self-aligning bearing and the rolling bearing, it is possible to suppress increases in cost.
自動調心軸受及び転がり軸受の具体的な配置の態様としては、前記自動調心軸受は、前記支持軸及び前記スリーブの間に設けられ、前記１又は複数の転がり軸受は、前記駆動軸及び前記スリーブの間に設けられていることが望ましい。この構成であれば、支持軸の撓みがまず自動調心軸受により吸収されるので、転がり軸受に加わる支持軸の撓みをより一層低減することができる。 As a specific arrangement of the self-aligning bearing and the rolling bearing, it is desirable that the self-aligning bearing is provided between the support shaft and the sleeve, and the one or more rolling bearings are provided between the drive shaft and the sleeve. With this configuration, the bending of the support shaft is first absorbed by the self-aligning bearing, so that the bending of the support shaft acting on the rolling bearing can be further reduced.
自動調心軸受及び転がり軸受を駆動軸及び支持軸の間に配置した場合に、それら軸受の径方向における配置スペースを小さくするためには、前記スリーブは、内側周面に前記自動調心軸受が固定される大径部と、外側周面に前記１又は複数の転がり軸受が固定される小径部とを有することが望ましい。 When the self-aligning bearing and the rolling bearing are arranged between the drive shaft and the support shaft, in order to reduce the radial arrangement space for these bearings, it is desirable for the sleeve to have a large diameter portion on its inner circumferential surface to which the self-aligning bearing is fixed, and a small diameter portion on its outer circumferential surface to which the one or more rolling bearings are fixed.
また、自動調心軸受及び転がり軸受を駆動軸及び支持軸の間に配置した場合に、それら軸受の径方向における配置スペースを小さくするためには、前記自動調心軸受の外径に対して前記１又は複数の転がり軸受の内径が同じか又は小さい径を有することが望ましい。 In addition, when the self-aligning bearing and the rolling bearing are arranged between the drive shaft and the support shaft, in order to reduce the radial arrangement space of the bearings, it is desirable that the inner diameter of the one or more rolling bearings be the same as or smaller than the outer diameter of the self-aligning bearing.
転がり軸受の交換を容易にするためには、前記支持軸において、軸方向内側に前記自動調心軸受が設けられ、軸方向外側に２つの前記転がり軸受が設けられている構成とすることが考えられる。この構成において、２つの転がり軸受が受ける荷重を小さくして転がり軸受を長寿命化するためには、前記２つの転がり軸受の間の距離は、前記自動調心軸受と当該自動調心軸受に隣接する前記転がり軸受との間の距離に対して同じか又は大きいことが望ましい。 To facilitate replacement of the rolling bearings, it is possible to configure the support shaft so that the self-aligning bearing is provided on the axially inner side and the two rolling bearings are provided on the axially outer side. In this configuration, in order to reduce the load on the two rolling bearings and extend the life of the rolling bearings, it is desirable that the distance between the two rolling bearings is the same as or greater than the distance between the self-aligning bearing and the rolling bearing adjacent to it.
自動調心軸受により支持軸の撓みを吸収しつつ、転がり軸受により支持軸を安定して支持するためには、前記支持軸において、前記自動調心軸受を挟むように２つの前記転がり軸受が設けられていることが望ましい。 In order to allow the self-aligning bearing to absorb the deflection of the support shaft while the rolling bearing stably supports the support shaft, it is desirable that two of the rolling bearings are provided on the support shaft so that the self-aligning bearing is sandwiched between them.
前記自動調心軸受の具体的な実施の態様としては、外側周面を球面とする内輪と、当該内輪の外側周面に対してスライド自在の球面を内側周面に有する外輪とを有する滑り軸受とすることが考えられる。 A specific embodiment of the self-aligning bearing is a sliding bearing having an inner ring with a spherical outer circumferential surface and an outer ring with a spherical inner circumferential surface that can slide freely against the outer circumferential surface of the inner ring.
このように構成した本発明によれば、転がり軸受に調心機能を設けることなく支持軸の撓みを吸収しつつ、駆動軸内における支持軸の外径を大きくすることができる。 The present invention, configured in this way, can increase the outer diameter of the support shaft within the drive shaft while absorbing the deflection of the support shaft without providing an aligning function to the rolling bearing.
＜本発明の一実施形態＞
以下に本発明に係る誘導発熱ローラ装置１００の一実施形態について図面を参照して説明する。
<One embodiment of the present invention>
An embodiment of an induction heating roller device 100 according to the present invention will now be described with reference to the drawings.
この誘導発熱ローラ装置１００は、例えばプラスチックフィルム、紙、布、不織布、合成繊維、金属箔等のシート材又はウェブ材、線（糸）材等の連続材の熱処理工程等において用いられるものである。 This induction heating roller device 100 is used in heat treatment processes for continuous materials such as sheet materials or web materials, such as plastic films, paper, cloth, nonwoven fabrics, synthetic fibers, and metal foils, and wire (yarn) materials.
本実施形態の誘導発熱ローラ装置１００は、図１及び図２に示すように、回転自在に支持された中空円筒状のローラ本体２と、このローラ本体２の内部に設けられた誘導発熱機構３とを備えている。 As shown in Figures 1 and 2, the induction heating roller device 100 of this embodiment includes a rotatably supported hollow cylindrical roller body 2 and an induction heating mechanism 3 provided inside the roller body 2.
ローラ本体２の両端部それぞれには中空の駆動軸４１を有するジャーナル４が設けられており、当該駆動軸４１は、転がり軸受等の軸受８を介して機台９に回転自在に支持されている。なお、ジャーナル４は、駆動軸４１と、ローラ本体２の軸方向端部に固定されるフランジ部４２とを有している。そして、ローラ本体２は、例えばモータ等の回転駆動機構（不図示）により外部から与えられる駆動力によって回転されるように構成されている。 A journal 4 having a hollow drive shaft 41 is provided at each end of the roller body 2, and the drive shaft 41 is rotatably supported on a machine base 9 via a bearing 8 such as a rolling bearing. The journal 4 has the drive shaft 41 and a flange portion 42 fixed to the axial end of the roller body 2. The roller body 2 is configured to rotate by a driving force applied from an external source, for example, a rotation drive mechanism (not shown) such as a motor.
誘導発熱機構３は、円筒状をなす円筒状鉄心３１と、当該円筒状鉄心３１の外側周面に巻装された誘導コイル３２とを備えている。 The induction heating mechanism 3 includes a cylindrical iron core 31 and an induction coil 32 wound around the outer peripheral surface of the cylindrical iron core 31.
誘導発熱機構３の円筒状鉄心３１の両端部は、支持軸５により支持されており、ローラ本体２に固定された駆動軸４１の内部に挿通されて、軸受機構６を介して駆動軸４１の内側周面に回転自在に支持されている。なお、軸受機構６の詳細構成については、後述する。これにより、誘導発熱機構３は、回転するローラ本体２の内部において、機台９（固定側）に対して静止状態に保持される。 Both ends of the cylindrical iron core 31 of the induction heating mechanism 3 are supported by support shafts 5, which are inserted into the inside of a drive shaft 41 fixed to the roller body 2, and are rotatably supported on the inner circumferential surface of the drive shaft 41 via a bearing mechanism 6. The detailed configuration of the bearing mechanism 6 will be described later. As a result, the induction heating mechanism 3 is held stationary relative to the machine base 9 (fixed side) inside the rotating roller body 2.
また、誘導コイル３２には、給電用のリード線Ｌ１が接続されており、このリード線Ｌ１は、軸方向一方側（図１では右側）の支持軸の内部に挿通されて外部に導出されている。また、リード線Ｌ１には、商用周波数（５０Ｈｚ又は６０Ｈｚ）の交流電圧などを印加するための電源回路（不図示）が接続されている。 A power supply lead wire L1 is connected to the induction coil 32, and this lead wire L1 is inserted inside the support shaft on one axial side (the right side in FIG. 1) and led out to the outside. A power supply circuit (not shown) is connected to the lead wire L1 for applying AC voltage of commercial frequency (50 Hz or 60 Hz).
このような誘導発熱機構３により、誘導コイル３２に交流電圧が印加されると交番磁束が発生し、その交番磁束はローラ本体２の側周壁を通過する。この通過によりローラ本体２に誘導電流が発生し、その誘導電流でローラ本体２はジュール発熱する。 When an AC voltage is applied to the induction coil 32, this induction heating mechanism 3 generates an alternating magnetic flux, which passes through the side peripheral wall of the roller body 2. This passage generates an induced current in the roller body 2, which generates Joule heat in the roller body 2.
＜軸受機構６の詳細構成＞
本実施形態の軸受機構６は、リード線Ｌ１が導出される一方の支持軸側（リード線導出側）と、リード線Ｌ１が導出されない他方の支持軸側（反リード線導出側）とで構成が異なる。
<Detailed configuration of bearing mechanism 6>
The bearing mechanism 6 of this embodiment has a different configuration between one support shaft side (lead wire leading side) from which the lead wire L1 is led out and the other support shaft side (anti-lead wire leading side) from which the lead wire L1 is not led out.
リード線導出側の軸受機構６は、図２に示すように、駆動軸４１及び支持軸５の間に介在する円筒状のスリーブ６１と、支持軸５及びスリーブ６１の間に設けられる自動調心軸受６２と、駆動軸４１及びスリーブ６１の間に設けられる自動調心機能を有さない１又は複数の転がり軸受６３ａ、６３ｂとを有している。なお、図２では、２つの転がり軸受６３ａ、６３ｂを有する構成を図示しているが、１つであっても良いし、３つ以上であっても良い。 As shown in FIG. 2, the bearing mechanism 6 on the lead wire outlet side has a cylindrical sleeve 61 interposed between the drive shaft 41 and the support shaft 5, a self-aligning bearing 62 provided between the support shaft 5 and the sleeve 61, and one or more rolling bearings 63a, 63b without self-aligning function provided between the drive shaft 41 and the sleeve 61. Note that FIG. 2 shows a configuration with two rolling bearings 63a, 63b, but there may be one, or three or more.
そして、自動調心軸受６２と２つの転がり軸受６３ａ、６３ｂとは軸方向にずれて配置されている。具体的には、自動調心軸受６２と２つの転がり軸受６３ａ、６３ｂとは軸方向において互いに重ならないように配置されており、本実施形態では、軸方向内側から外側に向かって順に自動調心軸受６２及び２つの転がり軸受６３ａ、６３ｂが配置されている。 The self-aligning bearing 62 and the two rolling bearings 63a, 63b are arranged offset in the axial direction. Specifically, the self-aligning bearing 62 and the two rolling bearings 63a, 63b are arranged so as not to overlap with each other in the axial direction, and in this embodiment, the self-aligning bearing 62 and the two rolling bearings 63a, 63b are arranged in order from the inside to the outside in the axial direction.
自動調心軸受６２は、外側周面を球面とする内輪６２１と、当該内輪６２１の外側周面に対してスライド自在の球面を内側周面に有する外輪６２２とを有する滑り軸受である。この自動調心軸受６２は、支持軸５の外側周面に嵌合して設けられるとともに、スリーブ６１の内側周面に嵌合して設けられる。また、２つの転がり軸受６３ａ、６３ｂは、スリーブ６１の外側周面に嵌合して設けられるとともに、駆動軸４１の内側周面に嵌合して設けられる。 The self-aligning bearing 62 is a sliding bearing having an inner ring 621 with a spherical outer peripheral surface, and an outer ring 622 with a spherical inner peripheral surface that is slidable relative to the outer peripheral surface of the inner ring 621. This self-aligning bearing 62 is fitted to the outer peripheral surface of the support shaft 5, and is also fitted to the inner peripheral surface of the sleeve 61. In addition, two rolling bearings 63a, 63b are fitted to the outer peripheral surface of the sleeve 61, and are also fitted to the inner peripheral surface of the drive shaft 41.
そして、スリーブ６１は、内側周面に自動調心軸受６２が固定される大径部６１１と、外側周面に２つの転がり軸受６３ａ、６３ｂが間隔を空けて並んで固定される小径部６１２とを有する。また、スリーブ６１の大径部６１１の外側周面は、大径部６１１が駆動軸４１の内側周面に接触しないように、駆動軸４１の内側周面との間で隙間を空けて設けられている。さらに、スリーブ６１の小径部６１２の内側周面は、支持軸５が撓んでも接触しないように、支持軸５の外側周面との間で隙間を空けて設けられている。つまり、スリーブ６１の内側周面は、周方向全体において支持軸５の外側周面との間で隙間を有し、スリーブ６１の外側周面は、周方向全体において駆動軸４１の内側周面と隙間を有している。 The sleeve 61 has a large diameter portion 611 to which a self-aligning bearing 62 is fixed on the inner peripheral surface, and a small diameter portion 612 to which two rolling bearings 63a, 63b are fixed side by side at a distance from each other on the outer peripheral surface. The outer peripheral surface of the large diameter portion 611 of the sleeve 61 is provided with a gap between it and the inner peripheral surface of the drive shaft 41 so that the large diameter portion 611 does not contact the inner peripheral surface of the drive shaft 41. The inner peripheral surface of the small diameter portion 612 of the sleeve 61 is provided with a gap between it and the outer peripheral surface of the support shaft 5 so that the large diameter portion 611 does not contact the inner peripheral surface of the drive shaft 41 even if the support shaft 5 is bent. In other words, the inner peripheral surface of the sleeve 61 has a gap between the outer peripheral surface of the support shaft 5 in the entire circumferential direction, and the outer peripheral surface of the sleeve 61 has a gap between it and the inner peripheral surface of the drive shaft 41 in the entire circumferential direction.
このように大径部６１１の内側周面に固定される自動調心軸受６２と小径部６１２の外側周面に固定される転がり軸受６３ａ、６３ｂとは、自動調心軸受６２の外径に対して転がり軸受６３ａ、６３ｂの内径が同じか又は小さい径を有する構成とされている。 In this way, the self-aligning bearing 62 fixed to the inner peripheral surface of the large diameter portion 611 and the rolling bearings 63a, 63b fixed to the outer peripheral surface of the small diameter portion 612 are configured so that the inner diameters of the rolling bearings 63a, 63b are the same as or smaller than the outer diameter of the self-aligning bearing 62.
また、本実施形態では、支持軸５において、軸方向内側に自動調心軸受６２が設けられ、軸方向外側に２つの転がり軸受６３ａ、６３ｂが設けられる構成であり、２つの転がり軸受６３ａ、６３ｂの中心間の距離Ｘ２は、自動調心軸受６２と自動調心軸受６２に隣接する転がり軸受６３ａとの中心間の距離Ｘ１に対して同じか又は大きい構成としてある。この構成により、２つの転がり軸受６３ａ、６３ｂが受ける荷重を小さくして転がり軸受６３ａ、６３ｂを長寿命化することができる。 In addition, in this embodiment, the support shaft 5 is configured such that a self-aligning bearing 62 is provided on the axially inner side, and two rolling bearings 63a, 63b are provided on the axially outer side, and the distance X2 between the centers of the two rolling bearings 63a, 63b is the same as or greater than the distance X1 between the centers of the self-aligning bearing 62 and the rolling bearing 63a adjacent to the self-aligning bearing 62. This configuration reduces the load received by the two rolling bearings 63a, 63b, thereby extending the life of the rolling bearings 63a, 63b.
さらに、本実施形態では、２つの転がり軸受６３ａ、６３ｂにおいて、自動調心軸受６２に近い転がり軸受６３ａの方が大きい荷重を受けることになるため、自動調心軸受６２に近い転がり軸受６３ａを円筒コロ軸受とし、自動調心軸受６２から遠い転がり軸受６３ｂを深溝玉軸受としている。なお、２つの転がり軸受６３ａ、６３ｂはこれらに限られず、種々の転がり軸受を用いることができる。 Furthermore, in this embodiment, of the two rolling bearings 63a, 63b, the rolling bearing 63a closer to the self-aligning bearing 62 receives a larger load, so the rolling bearing 63a closer to the self-aligning bearing 62 is a cylindrical roller bearing, and the rolling bearing 63b farther from the self-aligning bearing 62 is a deep groove ball bearing. Note that the two rolling bearings 63a, 63b are not limited to these, and various rolling bearings can be used.
反リード線導出側の軸受機構６は、図１に示すように、自動調心軸受６４と転がり軸受６５とが軸方向において同じ位置に設けられている。図１では、支持軸５の外側周面に自動調心軸受６４が嵌合しており、当該自動調心軸受６４の外側周面に転がり軸受６５が嵌合している。また、転がり軸受６５の外側周面は駆動軸４１の内側周面に嵌合している。このように反リード線導出側の軸受機構６は、自動調心軸受６４と転がり軸受６５とが径方向に配置されているので、支持軸５は、リード線導出側よりも細くなっている。なお、反リード線導出側の軸受機構６も、リード線導出側の軸受機構６と同様の構成としても良い。 As shown in FIG. 1, the bearing mechanism 6 on the non-lead wire outlet side has a self-aligning bearing 64 and a rolling bearing 65 at the same axial position. In FIG. 1, the self-aligning bearing 64 is fitted to the outer peripheral surface of the support shaft 5, and the rolling bearing 65 is fitted to the outer peripheral surface of the self-aligning bearing 64. The outer peripheral surface of the rolling bearing 65 is fitted to the inner peripheral surface of the drive shaft 41. In this way, the bearing mechanism 6 on the non-lead wire outlet side has the self-aligning bearing 64 and the rolling bearing 65 arranged in the radial direction, so that the support shaft 5 is thinner than the lead wire outlet side. The bearing mechanism 6 on the non-lead wire outlet side may also be configured in the same way as the bearing mechanism 6 on the lead wire outlet side.
＜本実施形態の効果＞
このように構成した誘導発熱ローラ装置１００によれば、駆動軸４１及び支持軸５の間に設けたスリーブ６１を介して自動調心軸受６２と１又は複数の転がり軸受６３ａ、６３ｂとを軸方向にずらして配置しているので、自動調心軸受６２と転がり軸受６３ａ、６３ｂとを径方向に配置した従来構成に比べて、駆動軸４１及び支持軸５の間における軸受機構６が径方向寸法を小さくすることができる。その結果、転がり軸受６３ａ、６３ｂに調心機能を設けることなく支持軸５の撓みを吸収しつつ、駆動軸４１内における支持軸５の外径を大きくすることができる。また、転がり軸受６３ａ、６３ｂに調心機能を設けることなく支持軸５の撓みを吸収できるので、転がり軸受６３ａ、６３ｂに支持軸５の撓み（曲げ変形）が加わりにくくなり、転がり軸受６３ａ、６３ｂを長寿命化することができる。さらに、支持軸５の外径を大きくできるので、支持軸５の内部を通じて外部に導出されるリード線Ｌ１を太くすることができ、誘導発熱機構３に十分な電力を供給することができる。したがって、ローラ本体２の加熱温度が制約されてしまうことを防ぐことができる。その他、自動調心軸受６２と転がり軸受６３ａ、６３ｂとを一体化した特殊軸受を用いる必要がないので、コスト増大を抑えることができる。
<Effects of this embodiment>
According to the induction heating roller device 100 configured in this manner, the self-aligning bearing 62 and one or more rolling bearings 63a, 63b are arranged axially offset via the sleeve 61 provided between the drive shaft 41 and the support shaft 5, so that the radial dimension of the bearing mechanism 6 between the drive shaft 41 and the support shaft 5 can be made smaller than in the conventional configuration in which the self-aligning bearing 62 and the rolling bearings 63a, 63b are arranged radially. As a result, the outer diameter of the support shaft 5 within the drive shaft 41 can be increased while absorbing the bending of the support shaft 5 without providing an aligning function to the rolling bearings 63a, 63b. In addition, since the bending of the support shaft 5 can be absorbed without providing an aligning function to the rolling bearings 63a, 63b, the bending (bending deformation) of the support shaft 5 is less likely to be applied to the rolling bearings 63a, 63b, and the life of the rolling bearings 63a, 63b can be extended. Furthermore, since the outer diameter of the support shaft 5 can be increased, the lead wire L1 that is led out through the inside of the support shaft 5 can be made thicker, and sufficient power can be supplied to the induction heating mechanism 3. This prevents restrictions on the heating temperature of the roller body 2. In addition, since there is no need to use a special bearing that integrates the self-aligning bearing 62 and the rolling bearings 63a and 63b, increases in costs can be suppressed.
本実施形態では、自動調心軸受６２を支持軸５及びスリーブ６１の間に設け、転がり軸受６３ａ、６３ｂを駆動軸４１及びスリーブ６１の間に設けているので、支持軸５の撓みがまず自動調心軸受６２により吸収されることになり、転がり軸受６３ａ、６３ｂに加わる支持軸５の撓みをより一層低減することができる。 In this embodiment, the self-aligning bearing 62 is provided between the support shaft 5 and the sleeve 61, and the rolling bearings 63a and 63b are provided between the drive shaft 41 and the sleeve 61. This means that the deflection of the support shaft 5 is first absorbed by the self-aligning bearing 62, and the deflection of the support shaft 5 acting on the rolling bearings 63a and 63b can be further reduced.
さらに本実施形態では、自動調心軸受６２の外径に対して転がり軸受６３ａ、６３ｂの内径が同じか又は小さい径を有する構成としているので、自動調心軸受６２及び転がり軸受６３ａ、６３ｂを駆動軸４１及び支持軸５の間に配置した場合に、それら軸受６２、６３ａ、６３ｂの径方向における配置スペースを小さくすることができる。 Furthermore, in this embodiment, the inner diameter of the rolling bearings 63a, 63b is the same as or smaller than the outer diameter of the self-aligning bearing 62, so that when the self-aligning bearing 62 and the rolling bearings 63a, 63b are arranged between the drive shaft 41 and the support shaft 5, the radial arrangement space for the bearings 62, 63a, 63b can be reduced.
＜その他の実施形態＞
なお、本発明は前記実施形態に限られず、以下の態様であっても良い。
<Other embodiments>
The present invention is not limited to the above-described embodiment, but may be modified as follows.
例えば、図３に示すように、支持軸５において、自動調心軸受６２を挟むように２つの転がり軸受６３ａ、６３ｂを設けた構成であっても良い。この構成において、円筒状のスリーブ６１の軸方向中央部において、内側周面に自動調心軸受６２が固定される大径部６１１が形成され、スリーブ６１の軸方向両端部において、外側周面に転がり軸受６３ａ、６３ｂが固定される小径部６１２が形成されている。この構成では、２つの転がり軸受６３ａ、６３ｂに加わる荷重を等配して、それら転がり軸受６３ａ、６３ｂを長寿命化させるためには、各転がり軸受６３ａ、６３ｂと自動調心軸受６２との距離を等しくすることが望ましい。また、スリーブ６１は、中央部に形成された大径部６１１に自動調心軸受６２を設けるための構成として、周方向において複数に分割された分割要素６１ａ、６１ｂから構成されることが考えられる。図３においては、周方向において２分割した構成を示している。 For example, as shown in FIG. 3, the support shaft 5 may be configured to have two rolling bearings 63a and 63b sandwiching the self-aligning bearing 62. In this configuration, a large diameter portion 611 is formed in the axial center of the cylindrical sleeve 61, to which the self-aligning bearing 62 is fixed on the inner peripheral surface, and a small diameter portion 612 is formed in the axial end portions of the sleeve 61, to which the rolling bearings 63a and 63b are fixed on the outer peripheral surface. In this configuration, in order to distribute the load applied to the two rolling bearings 63a and 63b equally and to extend the life of the rolling bearings 63a and 63b, it is desirable to make the distance between each of the rolling bearings 63a and 63b and the self-aligning bearing 62 equal. In addition, the sleeve 61 may be configured to have a plurality of divided elements 61a and 61b divided in the circumferential direction as a configuration for providing the self-aligning bearing 62 on the large diameter portion 611 formed in the center. Figure 3 shows a configuration divided into two in the circumferential direction.
また、前記実施形態では、支持軸５とスリーブ６１との間に自動調心軸受６２を設け、駆動軸４１とスリーブ６１との間に転がり軸受６３ａ、６３ｂを設けた構成であったが、図４に示すように、駆動軸４１とスリーブ６１との間に自動調心軸受６２を設け、支持軸５とスリーブ６１との間に転がり軸受６３ａ、６３ｂを設けた構成としても良い。この場合、スリーブ６１の小径部６１２の外側周面と駆動軸４１の内側周面との間に自動調心軸受６２が設けられ、スリーブ６１の大径部６１１の内側周面と支持軸５の外側周面との間に転がり軸受６３ａ、６３ｂが設けられる。 In the above embodiment, the self-aligning bearing 62 is provided between the support shaft 5 and the sleeve 61, and the rolling bearings 63a, 63b are provided between the drive shaft 41 and the sleeve 61. However, as shown in FIG. 4, the self-aligning bearing 62 may be provided between the drive shaft 41 and the sleeve 61, and the rolling bearings 63a, 63b may be provided between the support shaft 5 and the sleeve 61. In this case, the self-aligning bearing 62 is provided between the outer peripheral surface of the small diameter portion 612 of the sleeve 61 and the inner peripheral surface of the drive shaft 41, and the rolling bearings 63a, 63b are provided between the inner peripheral surface of the large diameter portion 611 of the sleeve 61 and the outer peripheral surface of the support shaft 5.
その他、本発明は前記実施形態に限られず、その趣旨を逸脱しない範囲で種々の変形が可能であるのは言うまでもない。 It goes without saying that the present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the spirit of the invention.
１００・・・誘導発熱ローラ装置
２ ・・・ローラ本体
３ ・・・誘導発熱機構
４１ ・・・駆動軸
５ ・・・支持軸
６ ・・・軸受機構
６１ ・・・スリーブ
６１１・・・大径部
６１２・・・小径部
６２ ・・・自動調心軸受
６２１・・・内輪
６２２・・・外輪
６３ａ・・・転がり軸受
６３ｂ・・・転がり軸受
REFERENCE SIGNS LIST 100... induction heating roller device 2... roller body 3... induction heating mechanism 41... drive shaft 5... support shaft 6... bearing mechanism 61... sleeve 611... large diameter portion 612... small diameter portion 62... self-aligning bearing 621... inner ring 622... outer ring 63a... rolling bearing 63b... rolling bearing
Claims (5)
前記軸受機構は、前記駆動軸及び前記支持軸の間に介在するスリーブと、前記駆動軸及び前記スリーブの間又は前記支持軸及び前記スリーブの間の一方に設けられる自動調心軸受と、前記駆動軸及び前記スリーブの間又は前記支持軸及び前記スリーブの間の他方に設けられる１又は複数の転がり軸受とを有し、
前記自動調心軸受と前記１又は複数の転がり軸受とは軸方向にずれて配置され、
前記スリーブは、前記支持軸及び前記スリーブの間に設けられた前記自動調心軸受又は前記１又は複数の転がり軸受の一方が内側周面に固定される大径部と、前記駆動軸及び前記スリーブの間に設けられた前記自動調心軸受又は前記１又は複数の転がり軸受の他方が外側周面に固定される小径部とを有している、誘導発熱ローラ装置。 An induction heating roller device in which a support shaft supporting an induction heating mechanism is inserted into a drive shaft fixed to a roller body, and the support shaft is supported on an inner peripheral surface of the drive shaft via a bearing mechanism, thereby holding the induction heating mechanism inside the roller body,
the bearing mechanism includes a sleeve interposed between the drive shaft and the support shaft, a self-aligning bearing provided either between the drive shaft and the sleeve or between the support shaft and the sleeve, and one or a plurality of rolling bearings provided either between the drive shaft and the sleeve or between the support shaft and the sleeve,
the self-aligning bearing and the one or more rolling bearings are arranged to be offset from each other in the axial direction ;
An induction heating roller device, wherein the sleeve has a large diameter portion to which one of the self-aligning bearing or the one or more rolling bearings provided between the support shaft and the sleeve is fixed on its inner peripheral surface, and a small diameter portion to which the other of the self-aligning bearing or the one or more rolling bearings provided between the drive shaft and the sleeve is fixed on its outer peripheral surface .
前記軸受機構は、前記駆動軸及び前記支持軸の間に介在するスリーブと、前記駆動軸及び前記スリーブの間又は前記支持軸及び前記スリーブの間の一方に設けられる自動調心軸受と、前記駆動軸及び前記スリーブの間又は前記支持軸及び前記スリーブの間の他方に設けられる１又は複数の転がり軸受とを有し、the bearing mechanism includes a sleeve interposed between the drive shaft and the support shaft, a self-aligning bearing provided either between the drive shaft and the sleeve or between the support shaft and the sleeve, and one or a plurality of rolling bearings provided either between the drive shaft and the sleeve or between the support shaft and the sleeve,
前記自動調心軸受と前記１又は複数の転がり軸受とは軸方向にずれて配置され、the self-aligning bearing and the one or more rolling bearings are arranged to be offset from each other in the axial direction;
前記支持軸及び前記スリーブの間に設けられた前記自動調心軸受又は前記１又は複数の転がり軸受の一方の外径に対して、前記駆動軸及び前記スリーブの間に設けられた前記自動調心軸受又は前記１又は複数の転がり軸受の他方の内径が同じか小さい径を有している、誘導発熱ローラ装置。An induction heating roller device in which the inner diameter of the other of the self-aligning bearing or the one or more rolling bearings provided between the drive shaft and the sleeve is the same as or smaller than the outer diameter of one of the self-aligning bearings or the one or more rolling bearings provided between the support shaft and the sleeve.
前記２つの転がり軸受の間の距離は、前記自動調心軸受と当該自動調心軸受に隣接する前記転がり軸受との間の距離に対して同じか又は大きい、請求項１又は２に記載の誘導発熱ローラ装置。 The self-aligning bearing is provided on an axially inner side of the support shaft, and the two rolling bearings are provided on an axially outer side of the support shaft,
3. The induction heating roller device according to claim 1 , wherein the distance between the two rolling bearings is equal to or greater than the distance between the self-aligning bearing and the rolling bearing adjacent to the self-aligning bearing.
5. The induction heating roller device according to claim 1 , wherein the self-aligning bearing is a sliding bearing having an inner ring having a spherical outer circumferential surface, and an outer ring having a spherical inner circumferential surface that is slidable relative to the outer circumferential surface of the inner ring.
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| JP2003157962A (en) | 2001-11-26 | 2003-05-30 | Tokuden Co Ltd | Induction heating roller device |
| US20040118894A1 (en) | 2001-05-21 | 2004-06-24 | Barmag Ag | Yarn guiding godet with magnetic bearings |
| JP2005009500A (en) | 2003-04-21 | 2005-01-13 | Tokuden Co Ltd | Induction heating roller device |
| JP2017067289A (en) | 2016-09-05 | 2017-04-06 | 日立金属株式会社 | Bearing device |
| US20190069485A1 (en) | 2017-09-04 | 2019-03-07 | Deere & Company | System for lubricating a bearing of a crop transport and/or processing system of a harvesting machine |
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| DE2837913C2 (en) * | 1978-08-31 | 1982-10-21 | ER-WE-PA Maschinenfabrik und Eisengießerei GmbH, 4006 Erkrath | Roller with controllable deflection, in particular for machines for producing and processing webs made of paper or plastic |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040118894A1 (en) | 2001-05-21 | 2004-06-24 | Barmag Ag | Yarn guiding godet with magnetic bearings |
| JP2003157962A (en) | 2001-11-26 | 2003-05-30 | Tokuden Co Ltd | Induction heating roller device |
| JP2005009500A (en) | 2003-04-21 | 2005-01-13 | Tokuden Co Ltd | Induction heating roller device |
| JP2017067289A (en) | 2016-09-05 | 2017-04-06 | 日立金属株式会社 | Bearing device |
| US20190069485A1 (en) | 2017-09-04 | 2019-03-07 | Deere & Company | System for lubricating a bearing of a crop transport and/or processing system of a harvesting machine |
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