JP2902344B2 - Bearings for printing press - Google Patents
Bearings for printing pressInfo
- Publication number
- JP2902344B2 JP2902344B2 JP8053061A JP5306196A JP2902344B2 JP 2902344 B2 JP2902344 B2 JP 2902344B2 JP 8053061 A JP8053061 A JP 8053061A JP 5306196 A JP5306196 A JP 5306196A JP 2902344 B2 JP2902344 B2 JP 2902344B2
- Authority
- JP
- Japan
- Prior art keywords
- printing
- bearing
- race
- intermediate race
- blanket cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
- F16C19/55—Systems consisting of a plurality of bearings with rolling friction with intermediate floating or independently-driven rings rotating at reduced speed or with other differential ball or roller bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
- F16C13/02—Bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/10—Bearings, parts of which are eccentrically adjustable with respect to each other
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rotary Presses (AREA)
- Rolling Contact Bearings (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、輪転印刷機の印刷
部に設けられる、ゴム胴等の印刷胴を支持する支持装置
のように、支持する回転体の外周に設けた印刷面を、並
設された版胴、又は圧胴等の他の回転体の外周面と接
触、若しくは離隔できるように、軸心を移動させること
ができるようにして支持する印刷機用軸受に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing apparatus provided in a printing section of a rotary printing press, which supports a printing surface provided on an outer periphery of a rotating body to be supported, such as a support device for supporting a printing cylinder such as a blanket cylinder. The present invention relates to a bearing for a printing press that supports an axial center so that it can be moved so that it can be in contact with or separated from an outer peripheral surface of another rotating body such as a provided plate cylinder or an impression cylinder.
【０００２】[0002]
【従来の技術】輪転印刷機の印刷胴の代表的な動きとし
て、オフセット印刷機に設けられるゴム胴の動きを図２
に示す。図２（ａ）に示すように、オフセット印刷機の
印刷状態では、ゴム胴２は、並設された版胴１、圧胴３
のそれぞれ回転外周面に接触し、版胴１から転写された
印刷イメージを、圧胴３との間を通過する印刷用紙４に
転写することにより、印刷を行うようにしている。2. Description of the Related Art As a typical movement of a printing cylinder of a rotary printing press, the movement of a blanket cylinder provided in an offset printing press is shown in FIG.
Shown in As shown in FIG. 2A, in the printing state of the offset printing press, the blanket cylinder 2 includes the plate cylinder 1 and the impression cylinder 3
The printing is performed by transferring the print image transferred from the plate cylinder 1 to the printing paper 4 passing between the impression cylinder 3 by contacting the rotation outer peripheral surface of the printing cylinder.
【０００３】また、図２（ｂ）に示すように、圧胴３と
の間に印刷用紙４が通らないときは、これら３つの胴
１，２，３は、各々離隔した配置にしなければならず、
ゴム胴２の軸心２’を矢視５方向に移動させ、版胴１お
よび圧胴３のそれぞれの軸心から離れるようにして、３
つの胴１，２，３の外周面が、それぞれ離隔した配置に
なるようにしている。As shown in FIG. 2B, when the printing paper 4 does not pass between the impression cylinder 3 and the impression cylinder 3, these three cylinders 1, 2, and 3 must be separated from each other. Without
The axis 2 ′ of the blanket cylinder 2 is moved in the directions indicated by arrows 5 so as to be away from the respective axes of the plate cylinder 1 and the impression cylinder 3.
The outer peripheral surfaces of the two cylinders 1, 2, 3 are arranged so as to be separated from each other.
【０００４】さらに、図２（ａ）に示す印刷状態におい
て、印刷用紙４の紙厚が変わる場合は、ゴム胴２が印刷
用紙４を押圧する力、いわゆる印刷圧を適正に保つよう
にするために、ゴム胴２と圧胴３とのすき間の調整が必
要であり、ゴム胴２の軸心２’を矢視６方向に移動させ
て、ゴム胴２と圧胴３との外周面のすき間を調整するよ
うにしている。Further, when the thickness of the printing paper 4 changes in the printing state shown in FIG. 2A, in order to properly maintain the pressing force of the blanket cylinder 2 against the printing paper 4, that is, the so-called printing pressure. In addition, it is necessary to adjust the clearance between the blanket cylinder 2 and the impression cylinder 3, and the axial center 2 ′ of the blanket cylinder 2 is moved in the direction indicated by the arrow 6 so that the clearance between the outer peripheral surfaces of the blanket cylinder 2 and the impression cylinder 3 is changed. To adjust.
【０００５】印刷機として必要な、この様な動きを実現
するために、ゴム胴２を回転自在に支持する支持装置１
０には、図３に示す構造のものが採用されている。すな
わち、ゴム胴２の軸端部を、偏心した中間軌道輪７ｂの
内周側、および外周側に、それぞれ内側軸受と外側軸受
を設けた回転軸受７と、回転軸受７の外側とフレーム９
との間に介装された偏心メタル８とで、支持するように
した支持装置１０が採用されている。In order to realize such a movement necessary for a printing machine, a supporting device 1 for rotatably supporting a blanket cylinder 2 is provided.
For 0, the one having the structure shown in FIG. 3 is employed. That is, the shaft end of the blanket cylinder 2 is provided with an inner bearing and an outer bearing on the inner peripheral side and the outer peripheral side of the eccentric intermediate race ring 7b, respectively.
And a supporting device 10 which is supported by an eccentric metal 8 interposed therebetween.
【０００６】このうち、回転軸受７の外側軸受をテーパ
ローラベアリングにした、図３（ａ）に示すものは、ゴ
ム胴２の軸端部に嵌入され、固定された内側軌道輪７ａ
の外周と中間軌道輪７ｂの内周との間に、コロ７ｃを回
動自在に介装して、テーパローラベアリングの内側軸受
を形成するとともに、中間軌道輪７ｂの外周と、偏心メ
タル８の内周面に嵌入され、固定された外側軌道輪７ｄ
の内周との間に、コロ７ｅを回動自在に介装して、テー
パローラベアリングの外側軸受を形成する回転軸受７を
構成し、偏心した中間軌道輪７ｂに連結したアーム１１
によって、中間軌道輪７ｂの回動角を変えることによっ
て、ゴム胴２の軸端部軸心２’を、図２（ｂ）に示す矢
視５の方向に移動させることができるようにしている。
この移動を行う中間軌道輪７ｂの回動は、中間軌道輪７
ｂの内側および外側に、コロ７ｃ，７ｅを介装している
ため、比較的軽く回すことによりできる。FIG. 3A shows a rotary bearing 7 in which the outer bearing is a tapered roller bearing. The inner bearing ring 7a fitted and fixed to the shaft end of the blanket cylinder 2 is shown in FIG.
A roller 7c is rotatably interposed between the outer circumference of the intermediate race 7b and the inner circumference of the intermediate race 7b to form an inner bearing of a tapered roller bearing. Outer race ring 7d fitted and fixed to the inner peripheral surface
Arm 11 connected to an eccentric intermediate race 7b by forming a rotary bearing 7 forming an outer bearing of a tapered roller bearing by rotatably interposing a roller 7e between the arm 11 and the inner periphery of the intermediate race 7b.
Thus, by changing the rotation angle of the intermediate race 7b, the shaft end axis 2 ′ of the blanket cylinder 2 can be moved in the direction of arrow 5 shown in FIG. 2B. .
The rotation of the intermediate race 7b for performing this movement is performed by the intermediate race 7
Since the rollers 7c and 7e are interposed on the inside and outside of b, it can be made by relatively lightly turning.
【０００７】また、回転軸受７の外側軌道輪７ｄを内周
面で固着し、フレーム９にあけられた孔１４に挿入され
た偏心メタル８を回動させることによって、ゴム胴２の
軸端部軸心２’を、図２（ａ）に示す矢視６の方向に変
動させることができる。この回転軸受７の外側軌道輪７
ｄとフレーム９の孔１４の間に介装される偏心メタル８
は、その外周面とフレーム９にあけられた孔１４の内周
面との間が、印刷品質確保のため、数十μｍ（加工時の
理論すき間）のすき間しか設けられてないため、印刷圧
を適正にするための偏心メタル８の回動はかたいものと
なっている。Further, the outer race 7d of the rotary bearing 7 is fixed on the inner peripheral surface, and the eccentric metal 8 inserted into the hole 14 formed in the frame 9 is rotated, whereby the shaft end of the blanket cylinder 2 is rotated. The axis 2 'can be changed in the direction of arrow 6 shown in FIG. Outer race 7 of this rotary bearing 7
d and the eccentric metal 8 interposed between the holes 14 of the frame 9
Since only a gap of several tens of μm (theoretical gap at the time of processing) is provided between the outer peripheral surface and the inner peripheral surface of the hole 14 formed in the frame 9 to secure printing quality, the printing pressure is low. The rotation of the eccentric metal 8 for making the angle is appropriate is hard.
【０００８】次に、回転軸受７’の外側軸受を、ニード
ルベアリングにした図３（ｂ）に示すものは、上述した
図３（ａ）に示すものとは略同じ構造にされているが、
中間軌道輪７ｂ’の外周面、および外側軌道輪７ｄ’の
内周面のそれぞれには、テーパが設けられてなく、平坦
な面にして、幅方向に分割されてない１体のコロ７ｆを
回動自在に介装するようにしている。Next, the rotary bearing 7 'shown in FIG. 3B in which the outer bearing is a needle bearing has substantially the same structure as that shown in FIG.
Each of the outer peripheral surface of the intermediate race 7b 'and the inner peripheral surface of the outer race 7d' is not provided with a taper, is made a flat surface, and is provided with one roller 7f which is not divided in the width direction. It is arranged to be rotatable.
【０００９】なお、図３において、１２は中間軌道輪７
ｂ，７ｂ’のゴム胴２側から潤滑油が漏洩するのを、外
側軌道輪押え１３とともに防止する油カバーである。こ
のように、ゴム胴２の軸端部を支持し、しかも、軸心
２’を移動できるようにした支持装置１０は、従来、２
つのタイプのものを例示したが、以下の説明では、説明
を簡単にするため、回転軸受は、図３（ａ）に示す構造
の回転軸受７によって説明する。In FIG. 3, reference numeral 12 denotes an intermediate race 7
An oil cover for preventing the leakage of the lubricating oil from the blanket cylinder 2 of the b and 7b 'together with the outer race retainer 13. As described above, the supporting device 10 that supports the shaft end of the blanket cylinder 2 and is capable of moving the shaft center 2 ′ is a conventional device.
Although three types are illustrated, in the following description, for the sake of simplicity, the rotary bearing will be described using a rotary bearing 7 having a structure shown in FIG.
【００１０】ゴム胴２を回転自在に支持するとともに、
ゴム胴２の軸心を図２（ａ）に示す矢視６の方向、およ
び図２（ｂ）に示す矢視５の方向に移動できるようにし
た軸受１０は、上述のように構成されているため、ゴム
胴２が高速回転しているとき、内側軌道輪７ａと中間軌
道輪７ｂとの間に介装したコロ７ｃが高速で回動し、そ
の転がり摩擦、および潤滑油の強制流動による乱流拡散
発熱等により、熱となり、回転軸受７内の温度が上が
る。[0010] While supporting the blanket cylinder 2 rotatably,
The bearing 10 configured to be able to move the axis of the blanket cylinder 2 in the direction of arrow 6 shown in FIG. 2A and in the direction of arrow 5 shown in FIG. 2B is configured as described above. Therefore, when the blanket cylinder 2 is rotating at a high speed, the roller 7c interposed between the inner race 7a and the intermediate race 7b rotates at a high speed, causing the rolling friction and the forced flow of the lubricating oil. The heat is generated by turbulent diffusion heat and the like, and the temperature inside the rotary bearing 7 rises.
【００１１】このように、回転軸受７内に熱が発生した
場合、発生した熱のうち内側軌道輪７ａ側へ伝わるもの
は、伝達されるゴム胴２の熱容量が大きく、また、放熱
を行う伝熱表面積が大きいため、効率よく大気中へ放熱
されるため、内側軌道輪７ａ等が著しく温度上昇するこ
とはなく、これによる不具合が生じることはないが、中
間軌道輪７ｂへ伝えられた熱は、中間軌道輪７ｂが断熱
状態にあり、熱の逃げ場がないため、偏心メタル８と中
間軌道輪７ｂとの間に温度勾配が生ずることによる不具
合が発生する。As described above, when heat is generated in the rotary bearing 7, of the generated heat, the heat transmitted to the inner race 7 a has a large heat capacity of the blanket cylinder 2, and the heat for heat dissipation. Since the heat surface area is large, the heat is efficiently radiated to the atmosphere, so that the temperature of the inner race 7a and the like does not rise remarkably, and there is no problem caused by this. Since the intermediate race 7b is in an adiabatic state and there is no escape for heat, a problem occurs due to a temperature gradient between the eccentric metal 8 and the intermediate race 7b.
【００１２】すなわち、偏心メタル８の内周面と中間軌
道輪７ｂの外周面との間に介装されるコロ７ｅは、ゴム
胴２の高速回転時においても、前述したように、中間軌
道輪７ｂに連結したアーム１１で中間軌道輪７ｂを回動
させ、ゴム胴２の軸端部軸心２’を図２（ｂ）の矢視５
に示すように移動させる時以外は回転せず、線接触状態
で、中間軌道輪７ｂの外周面と、外側軌道輪７ｄを介し
て偏心メタル８の内周面とを連結しているだけであるた
め、中間軌道輪７ｂへ伝えられた熱は、偏心メタル８へ
伝達されず、中間軌道輪７ｂに熱が蓄積され、偏心メタ
ル８と中間軌道輪７ｂとの間には、大きな温度勾配が生
じることとなる。That is, the roller 7e interposed between the inner peripheral surface of the eccentric metal 8 and the outer peripheral surface of the intermediate race ring 7b can maintain the intermediate race ring even when the blanket cylinder 2 rotates at a high speed, as described above. The intermediate race 7b is rotated by the arm 11 connected to the arm 7b, and the shaft center 2 'of the blanket cylinder 2 is viewed from the arrow 5 in FIG.
The outer peripheral surface of the intermediate raceway ring 7b is merely connected to the inner peripheral surface of the eccentric metal 8 via the outer raceway ring 7d in a line contact state without rotating except when moving as shown in FIG. Therefore, the heat transmitted to the intermediate race 7b is not transmitted to the eccentric metal 8, the heat is accumulated in the intermediate race 7b, and a large temperature gradient is generated between the eccentric metal 8 and the intermediate race 7b. It will be.
【００１３】この温度勾配が生じる結果、中間軌道輪７
ｂが偏心メタル８に対し、相対膨張を起こし、中間軌道
輪７ｂがコロ７ｅを外周側へ押し出し、さらに、偏心メ
タル８を膨張させ、ゴム胴２と圧胴３とのすき間を調整
するために回動させる偏心メタル８と、フレーム９とが
すべる、適正な隙間がなくなり、偏心メタル８の回動が
できなくなり、前述した偏心メタル８の回動による、ゴ
ム胴２の軸端部軸心の図２（ａ）の矢視６に示す変動が
できなくなり、印刷用紙４の紙厚に応じた、ゴム胴２と
圧胴３とのすき間の調整、すなわち、印刷圧を適正に保
持することができなくなり、高品質の印刷が期待できな
くなるという不具合がある。As a result of this temperature gradient, the intermediate race 7
b causes relative expansion with respect to the eccentric metal 8, the intermediate race ring 7b pushes the roller 7e to the outer peripheral side, further expands the eccentric metal 8, and adjusts the gap between the blanket cylinder 2 and the impression cylinder 3. The eccentric metal 8 to be rotated and the frame 9 slip, there is no proper gap, the eccentric metal 8 cannot be rotated, and the rotation of the eccentric metal 8 causes the axial center of the shaft end of the blanket cylinder 2 to rotate. The fluctuation shown by the arrow 6 in FIG. 2A cannot be performed, and the gap between the blanket cylinder 2 and the impression cylinder 3 according to the thickness of the printing paper 4 can be adjusted, that is, the printing pressure can be appropriately maintained. This makes it impossible to perform high-quality printing.
【００１４】特に、軸受温度が高い運転直後は、この現
象が顕著に見られ、また、この不具合を解消するため
に、回転軸受７への給油量を増しても、効果がないのが
現状である。In particular, immediately after the operation at a high bearing temperature, this phenomenon is remarkably observed, and even if the amount of oil supplied to the rotary bearing 7 is increased to solve this problem, there is no effect at present. is there.
【００１５】[0015]
【発明が解決しようとする課題】本発明は、従来の印刷
機用軸受に発生する、上述の不具合を解消するため、断
熱状態となり、熱の逃げ場のない中間軌道輪からの放熱
量を増大させて、高速回転時においても、偏心メタルと
中間軌道輪との間に生じる温度勾配を小さくして、偏心
メタルとフレームとの間に設けられるすき間を、加工時
の理論すき間に維持させて、印刷圧を適正にする、偏心
メタルの回動を自在にできるようにした印刷機用軸受を
提供することを課題とする。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems which occur in a conventional bearing for a printing press by providing an adiabatic state and increasing the amount of heat radiated from an intermediate race having no escape of heat. Therefore, even during high-speed rotation, the temperature gradient generated between the eccentric metal and the intermediate race is reduced, and the gap provided between the eccentric metal and the frame is maintained at the theoretical gap at the time of processing, and printing is performed. An object of the present invention is to provide a bearing for a printing press in which the pressure can be adjusted appropriately and the eccentric metal can rotate freely.
【００１６】[0016]
【課題を解決するための手段】このため、本発明の印刷
機用軸受は、次の手段とした。外周に印刷面を設けた回
転体を回転自在に支持するとともに、その軸心と、並設
した他の回転体の軸心との間隔を、回動角を変えること
により、変化させ、印刷面と他の回転体の外周面との接
触、若しくは離隔を行う中間軌道輪の外側面に、放熱を
促進するための熱伝導率の高い複数の放熱フィンを径方
向に取付けた。For this reason, the bearing for a printing press according to the present invention has the following means. A rotatable body provided with a printing surface on its outer circumference is rotatably supported, and the distance between the axis of the rotatable body and the axis of another rotatable body arranged side by side is changed by changing the rotation angle, and the printing surface is changed. A plurality of heat dissipating fins having high thermal conductivity for promoting heat dissipation are mounted in the radial direction on the outer surface of the intermediate raceway which makes contact with or separates the outer peripheral surface of the rotating body.
【００１７】本発明の印刷機用軸受は、上述の手段によ
り、印刷機の高速回転時に断熱状態になり、高温になっ
ていた、従来の中間軌道輪は、伝熱面積が増加し、放熱
（対流、輻射等）効果が高まり、いわゆる断熱状態が解
除され、内側軌道輪と中間軌道輪との間に介装した、高
速で回転するコロの転がり摩擦、若しくは潤滑油の強制
流動による乱流拡散発熱等により、中間軌道輪に伝達さ
れる熱は、中間軌道輪に蓄積されることなく外部へ放出
される。The bearing for a printing press according to the present invention is insulated by the above-described means when the printing press is rotated at a high speed, and is heated to a high temperature. Convection, radiation, etc.) effect is enhanced, so-called adiabatic condition is released, and rolling friction of high-speed rotating rollers interposed between the inner race and the intermediate race, or turbulent diffusion due to forced flow of lubricating oil The heat transmitted to the intermediate race is released to the outside without being accumulated in the intermediate race due to heat generation or the like.
【００１８】また、放熱フィンは回転軸受の外の潤滑油
で冷却容易となり、中間軌道輪を効果的に冷却できるよ
うになる。Further, the radiation fins can be easily cooled by the lubricating oil outside the rotary bearing, so that the intermediate race can be effectively cooled.
【００１９】これにより、中間軌道輪の温度上昇を小さ
くでき、熱膨張を低減できるとともに、偏心メタル、フ
レームとの温度勾配を小さくすることができ、中間軌道
輪の外周面による偏心メタルの外周側への押し出しが少
くなり、偏心メタルとフレームの孔とのすき間は、加工
時の理論すき間に保持され、偏心メタルは自在に回動角
を変えることができるようになり、印刷用紙の紙厚に応
じた、印刷胴と印刷用紙を移送する胴とのすき間を適正
に調整でき、高品質の印刷が維持できる。[0019] Thereby, the temperature rise of the intermediate race can be reduced, the thermal expansion can be reduced, and the temperature gradient between the eccentric metal and the frame can be reduced. Extrusion, the gap between the eccentric metal and the hole in the frame is held at the theoretical gap during processing, and the eccentric metal can change the rotation angle freely, reducing the thickness of the printing paper. Accordingly, the gap between the printing cylinder and the cylinder for transferring the printing paper can be appropriately adjusted, and high-quality printing can be maintained.
【００２０】[0020]
【発明の実施の形態】以下、本発明の印刷機用軸受の実
施の一形態を図面にもとづき説明する。図１は本発明の
印刷機用軸受の実施の第１形態を示す図で、図１（ａ）
は横断面図、図１（ｂ）は図１（ａ）に示す矢視Ａ−Ａ
における外側面図、図１（ｃ）は図１（ａ）に示す矢視
Ｂ−Ｂにおける内側面図である。なお、図において、図
３（ａ）に示す符番と同一符番のものは、同一、若しく
は類似する部材につき、説明は省略する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a bearing for a printing press according to the present invention will be described below with reference to the drawings. FIG. 1 is a view showing a first embodiment of a bearing for a printing press according to the present invention, and FIG.
Is a cross-sectional view, and FIG. 1B is a view taken along the line AA shown in FIG.
1 (c) is an inner side view taken along the line BB shown in FIG. 1 (a). In the drawing, components having the same reference numerals as those shown in FIG. 3A are the same or similar members, and description thereof will be omitted.
【００２１】図に示すように、中間軌道輪７ｂのフレー
ム側、すなわちゴム胴２が設けられている内側には、回
転軸受７内の潤滑油がフレーム９間に流出するのを、外
側軌道輪押え１３とともに、防ぐ油カバー１２が取り付
けられている。さらに、中間軌道輪７ｂの外側には、中
間軌道輪７ｂを回動させるアーム１１が取付けられてお
り、図１（ｂ）に示す矢視１５方向へリンク等で押，引
きを行うようにしている。この押，引きにより、中間軌
道輪７ｂを回動させることによって、中間軌道輪７ｂ
は、ゴム胴２の軸心２’に対して偏心しているためゴム
胴２の軸心２’は、図２（ｂ）の矢視５で示す方向に移
動する。As shown in the drawing, on the frame side of the intermediate race 7b, that is, on the inner side where the blanket cylinder 2 is provided, the lubricating oil in the rotary bearing 7 flows out between the frames 9 to prevent the lubricating oil from flowing out between the frames 9. Along with the presser 13, an oil cover 12 to be prevented is attached. Further, an arm 11 for rotating the intermediate race 7b is attached to the outside of the intermediate race 7b, and the arm 11 is pushed and pulled by a link or the like in the direction of arrow 15 shown in FIG. 1 (b). I have. By rotating the intermediate race 7b by the pushing and pulling, the intermediate race 7b is rotated.
Is eccentric with respect to the axis 2 ′ of the blanket cylinder 2, the axis 2 ′ of the blanket cylinder 2 moves in the direction indicated by the arrow 5 in FIG.
【００２２】本実施の形態では、このような、油カバー
１２の内側、およびアーム１１の外側にそれぞれ放熱フ
ィン１６，１７を取り付けた。すなわち、油カバー１
２、アーム１１、放熱フィン１６，１７の材質は、熱伝
導率の高い材料のうちで、当該装置に強度的に問題ない
ものを選定し、アーム１１の外側に放熱フィン１６を放
射状に配設するとともに、油カバー１２の内側に放熱フ
ィン１７を放射状に突設した。In this embodiment, the radiation fins 16 and 17 are attached to the inside of the oil cover 12 and the outside of the arm 11, respectively. That is, the oil cover 1
2. The material of the arm 11 and the radiation fins 16 and 17 is selected from materials having high thermal conductivity and having no problem in the strength of the device, and the radiation fins 16 are arranged radially outside the arm 11. At the same time, the radiation fins 17 are provided radially inside the oil cover 12.
【００２３】そして、放熱フィン１６は大気との対流、
放熱フィン１７は大気との対流と潤滑油の散布による放
熱により、内側軌道輪７ａと中間軌道輪７ｂの間に介装
されたコロ７ｃの高速回動、およびコロ７ｃの回動に伴
う潤滑油の強制流動による乱流拡散発熱等で発生し、中
間軌道輪７ｂへ伝えられた熱を、効果的に回転軸受７外
へ逃がすことができる。The radiating fins 16 are convected with the atmosphere.
The radiating fins 17 rotate by high speed of the roller 7c interposed between the inner race 7a and the intermediate race 7b, and lubricating oil accompanying the rotation of the roller 7c due to convection with the atmosphere and heat radiation by spraying the lubricating oil. The heat generated by the turbulent diffusion heat generated by the forced flow and transmitted to the intermediate race 7b can be effectively released to the outside of the rotary bearing 7.
【００２４】その結果、中間軌道輪７ｂ、偏心メタル
８、フレーム９の各々間の温度勾配が低く押えられ、中
間軌道輪７ｂの相対熱膨張が小さくなり、フレーム９の
孔１４の内周面と偏心メタル８の外周面との間に形成さ
れるすき間が、加工時の理論すき間に保つことができ
る。As a result, the temperature gradient between each of the intermediate race 7b, the eccentric metal 8, and the frame 9 is suppressed low, the relative thermal expansion of the intermediate race 7b is reduced, and the inner peripheral surface of the hole 14 of the frame 9 is The gap formed between the eccentric metal 8 and the outer peripheral surface can be kept the theoretical gap at the time of processing.
【００２５】これによって、図１（ｂ）に示す矢視１８
方向のリンクの動き、すなわち偏心メタル８の回動が、
常に正常に行なわれるようになり、印刷用紙４の紙厚に
対する調整がスムースに行なわれることになり、高品質
の印刷ができる。As a result, the arrow 18 shown in FIG.
The movement of the link in the direction, that is, the rotation of the eccentric metal 8,
The printing is always performed normally, and the adjustment to the thickness of the printing paper 4 is smoothly performed, so that high-quality printing can be performed.
【００２６】[0026]
【発明の効果】以上説明したように、本発明の印刷機用
軸受によれば、特許請求の範囲に示す構成により、中間
軌道輪の熱膨張を防止することによって、フレームと偏
心メタル間のすき間を、高速回転時においても、適正な
加工時の理論すき間に保ち、印刷紙の紙厚の変更に伴
う、偏心メタルの回動が滑らかに行なうことができ、印
刷圧を適正にする偏心メタルの回動角に調整でき、高品
質の印刷が維持できる。As described above, according to the bearing for a printing press of the present invention, by the structure shown in the claims, by preventing the thermal expansion of the intermediate race, the gap between the frame and the eccentric metal is prevented. Even when rotating at high speed, the theoretical gap at the time of proper processing is maintained, and the eccentric metal can smoothly rotate with the change in the thickness of the printing paper, and the eccentric metal that makes the printing pressure appropriate The rotation angle can be adjusted and high quality printing can be maintained.
【図１】本発明の印刷機用軸受の実施の第１形態を示す
図で、図１（ａ）は横断面図、図１（ｂ）は、図１
（ａ）に示す矢視Ａ−Ａにおける外側面図、図１（ｃ）
は、図１（ａ）に示す矢視Ｂ−Ｂにおける内側面図、FIG. 1 is a view showing a first embodiment of a bearing for a printing press according to the present invention, wherein FIG. 1 (a) is a cross-sectional view, and FIG. 1 (b) is FIG.
FIG. 1C is an outer side view taken along the line AA shown in FIG.
Is an inner side view taken along the line BB shown in FIG.
【図２】印刷中に行なわれるオフセット印刷機のゴム胴
の動きを説明する断面図で、図２（ａ）は、印刷時およ
び紙厚に対応する調整時を示す図、図２（ｂ）は、印刷
用紙が通過しない時を示す図、2A and 2B are cross-sectional views illustrating the movement of a blanket cylinder of an offset printing press performed during printing. FIG. 2A is a diagram illustrating printing and adjustment corresponding to paper thickness, and FIG. Is a diagram showing when printing paper does not pass,
【図３】従来の印刷機用軸受を示す断面図で、図３
（ａ）は、外側軸受をテーパローラベアリングにした支
持装置を示す図、図３（ｂ）は、外側軸受をニードルベ
アリングにした支持装置を示す図である。FIG. 3 is a sectional view showing a conventional bearing for a printing press.
FIG. 3A is a diagram illustrating a supporting device in which the outer bearing is a tapered roller bearing, and FIG. 3B is a diagram illustrating a supporting device in which the outer bearing is a needle bearing.
１ 版胴 ２ ゴム胴 ２’ ゴム胴軸心 ３ 圧胴 ４ 印刷用紙 ５ 胴外周面離隔方向 ６ 印刷圧調整方向 ７ 回転軸受 ７ａ 内側軌道輪 ７ｂ 中間軌道輪 ７ｃ （内側）コロ ７ｄ 外側軌道輪 ７ｅ （外側）コロ ８ 偏心メタル ９ フレーム １０ 支持装置 １１ アーム １２ 油カバー １３ 外側軌道輪押え １４ フレーム孔 １５ アームの押，引方向 １６ 放熱フィン １７ 放熱フィン REFERENCE SIGNS LIST 1 plate cylinder 2 blanket cylinder 2 ′ blanket cylinder axis 3 impression cylinder 4 printing paper 5 direction of separation of cylinder outer peripheral surface 6 printing pressure adjustment direction 7 rotation bearing 7 a inner raceway ring 7 b intermediate raceway ring 7 c (inner) roller 7 d outer raceway ring 7 e (Outer) roller 8 Eccentric metal 9 Frame 10 Support device 11 Arm 12 Oil cover 13 Outer race ring holder 14 Frame hole 15 Arm pushing / pulling direction 16 Heat radiation fin 17 Heat radiation fin
Claims (1)
せた中間軌道輪を具えた軸受、および偏心メタルで支持
し、前記中間軌道輪、および偏心メタルのそれぞれの回
動により、前記回転体の軸心を移動できるようにした印
刷機用軸受において、前記中間軌道輪の外側面に、複数
の放熱フィンを径方向に配設したことを特徴とする印刷
機用軸受。1. A rotating body provided with a printing surface on an outer periphery thereof is supported by a bearing having an eccentric intermediate race and an eccentric metal, and the rotation of the intermediate race and the eccentric metal causes the rotating body to rotate. A bearing for a printing press, wherein a plurality of radiating fins are radially arranged on an outer surface of the intermediate race, in a bearing for a printing press capable of moving an axis of a rotating body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8053061A JP2902344B2 (en) | 1996-03-11 | 1996-03-11 | Bearings for printing press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8053061A JP2902344B2 (en) | 1996-03-11 | 1996-03-11 | Bearings for printing press |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09239952A JPH09239952A (en) | 1997-09-16 |
| JP2902344B2 true JP2902344B2 (en) | 1999-06-07 |
Family
ID=12932338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8053061A Expired - Lifetime JP2902344B2 (en) | 1996-03-11 | 1996-03-11 | Bearings for printing press |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2902344B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010101362A (en) * | 2008-10-22 | 2010-05-06 | Nachi Fujikoshi Corp | Bearing device for railroad vehicle |
| JP2016026947A (en) * | 2014-06-26 | 2016-02-18 | 日本車輌製造株式会社 | Railroad vehicle truck with journal box structure |
-
1996
- 1996-03-11 JP JP8053061A patent/JP2902344B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010101362A (en) * | 2008-10-22 | 2010-05-06 | Nachi Fujikoshi Corp | Bearing device for railroad vehicle |
| JP2016026947A (en) * | 2014-06-26 | 2016-02-18 | 日本車輌製造株式会社 | Railroad vehicle truck with journal box structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09239952A (en) | 1997-09-16 |
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