JPH0213559A - Feeding roller for web - Google Patents

Abstract

PURPOSE:To simplify the structure of a web feeding roller and to increase the driving efficiency by supporting an outer cylindrical member freely rotatably on a support shaft, providing an electrifying part on the stator fixed to this support shaft, fixing a rotor to the outer cylindrical member so as to oppose to this stator and arranging a electrifying means electrifying this electrifying part. CONSTITUTION:A support shaft 1 is adequately fixed and the electrifying part(coil) 4 of a stator 3 is electrified by an electrifying means 6. A rotating magnetic field is formed on the stator 3 by this electrification and a web(roll paper, cloth, etc.) is transferred by rotating the outer periphery member 2 fixed with a rotor 5 centering around the fixed support shaft 1 according to the rotation of this rotating magnetic field.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention is effective when installed in a path that guides the web from a supply section to a processing section in an apparatus that handles webs, that is, roll papers, fabrics, etc. Related to rollers. Specifically, the paper guide path of a device such as a rotary press, in which the rolled paper travels at high speed from the paper feed section, through the printing section, and towards the folding section.
Second, it relates to a roller that is driven and rotated in a direction that matches the direction in which the roll paper runs.

(Prior Art) In a rotary press that uses a web of paper, a drag roller is known as a drive roller provided in the paper guide path. , "Newspaper Printing Edition Revised Edition" (October 31, 1980, published by Japan Newspaper Association), page 61, lines 23 to 27 in the left column, the circumferential speed is slightly lower than that of the printing cylinder. As shown in Figure 57 on page 48 of the above-mentioned "Newspaper Printing Edition Revised Edition", the main motor of the rotary press uses a large number of gears to keep tension on the paper. drive

In addition, as rotary presses become faster and larger due to an increase in the number of connected machines, the load acting on the paper in the paper guide path increases, causing various problems in terms of product quality and machine operating efficiency. and to prevent this, e.g.
Japanese Patent Publication No. 51-137508 (Special Publication No. 58-3021.7)
No.) [Tension control device for running paper in rotary printing press] Publication, Utility Model Publication No. 53-1.3802 (Utility Model Publication No. 56-4695)
No. 1) Running paper tension adjustment device in the paper feeding path of a rotary press"
As shown in Japanese Patent Publication No. 52-136010 "Tension Control Device for Rotary Printing Machine", a drive roller is disclosed in which an appropriate roller other than the drag roller in the paper guide path is used as a driving roller.

(Problem to be Solved by the Invention) However, each drive roller provided in the conventional paper guide path 2 has a shaft rotatably supported on the frame, and a gear or the like is attached to the end of the shaft. The transmission means are interlocked and connected and driven by a drive means provided elsewhere, and the structure from the drive means to the transmission means is large-scale and/or complicated.

Therefore, there is a problem that depending on the installation of the roller, it may not be possible to use it as a driving roller due to the installation space required.

Furthermore, since the configuration is large-scale and/or complicated as described above, a considerable amount of effort and expense is required for assembly and maintenance, and there is also little loss in drive efficiency due to the configuration that mediates the driving force. The present invention solves the above-mentioned problems and has an extremely compact and simple configuration, and the non-driven guide rollers that conventionally constituted the guide path for one bill are replaced. The purpose of this invention is to provide a drive roller that can be easily installed in any position where it can be installed, and that has little drive efficiency loss. parts and
Consisting of a stator including a current-carrying part and fixed to a support shaft, a rotor fixed to an outer cylinder member so as to face the stator, and a current-carrying means for energizing at least the current-carrying part of the stator. Provides a web feed "l-ler" characterized by:

(for production) The support shaft is appropriately fixed and energized by the energizing means.

In the case where a rotating magnetic field is generated in the stator by energization, the outer cylindrical member to which the rotor is fixed rotates around the fixed support shaft as the rotating magnetic field rotates.

When the stator is configured to generate a force according to Fleming's left-hand rule due to the magnetic field generated by the rotor and the current flowing through the current-carrying part of the stator when energized, the support shaft to which the stator is fixed is fixed. Because of this, the rotor rotates due to the reaction force of the force according to Fleming's left-hand rule, and the outer cylindrical member to which the rotor is fixed rotates around the fixed support shaft.

(Example) Next, this invention will be described with reference to drawings showing examples of the invention.

GR shown in FIG. 4 is a guide roller in a rotary press. As shown schematically in FIG. 4, the guide roller GR supports the web from the paper feeding section S through the printing section P to the folding section FO by preventing it from dripping, and also guides the web by changing the traveling direction as appropriate. are doing.

The present invention relates to a self-driving roller that can be replaced at any installation position of the guide roller GR, and its configuration is as follows.

(1) is a support shaft of the guide roller GR. In the embodiment shown in FIG. 7), supporting the outer cylinder member (2) via (7).

At the same time, the support shaft (1) fixes a stator (3) equipped with a stator winding (4), which is a current-carrying part, inside the bearing (7), and the stator winding (4) is fixed to the support shaft (] ) energizing means (6) connected to a deep hole (8) formed along the axis from the end of the
Connect with.

A rotor (5) equipped with a rotor conductor (not shown) is attached to the inner wall of the outer cylindrical member (cutting of the outer cylindrical member) through a slight gap between the rotor (5) and the stator (3) fixed to the support shaft (1). The rotor conductor is formed, for example, into a cage shape (not shown) with both ends connected by a short-circuit ring.

In Fig. 1, the stator (3) and the rotor (5) are installed in two places near the end of the outer cylinder part (2). The rotor (5) can be used regardless of its configuration (number and position) as long as it is balanced when the outer cylinder member (2) rotates and can obtain the necessary rotation. do not have.

In addition, an appropriate number of small holes (9) are provided that communicate with the deep hole (8) from the outer periphery of the support shaft (1) for cooling ventilation during operation. A cooling fan ( ] 0) that operates according to the rotation is provided at an appropriate position, and/or a small hole ( 1
]) may be supplied with cooling gas.

Next, the operation of this embodiment will be explained.

An alternating current controlled at an appropriate frequency is applied to the stator winding (4) via the current supply means (6) to create a rotating magnetic field. This magnetic field exerts a force on the rotor conductor (not shown) in a direction perpendicular to the magnetic flux created by this conductor and the rotor winding (4), causing the rotor (5) to move in the same direction as the rotating magnetic field and Rotate at a slightly slower speed. Therefore, the outer cylinder member (2) to which the rotor (5) is fixedly mounted rotates around the support shaft (1).

FIGS. 2 and 3 are schematic perspective views of the general configuration of other embodiments of the present invention. In both of these embodiments, direct current is supplied via the current-carrying means (6), and the fixed element (3) is a current-carrying part through which current flows in a fixed direction via the current-carrying means (6). (4)' (FIGS. 2 and 3 are schematic diagrams, and the stator (3) is shown in the form of a current-carrying part (4)').

Furthermore, in the embodiment shown in FIG. ) is fixedly installed, and as the rotor (5) rotates, the wire-shaped current-carrying part (12
) to change the direction of the current flowing through the energizing means (6).
A rotor energizing section (13) consisting of a commutator and brushes is provided.

Furthermore, in the embodiment shown in FIG. A detection unit that detects the magnetic poles of the rotating rotor (5) at a predetermined fixed position so as to change the direction of the current flowing to the current-carrying part (4)' of the stator (3) as the rotor (5) rotates. (15) and this detection section (
15) a semiconductor switch (14) switched by;
(14) A current supply means (6) is provided. Detection unit(
15), for example, a support shaft (1) facing the rotor (5).
). The detection unit (15) is a pole element when directly detecting the magnetic pole, but the detection unit (15) is a pole element when directly detecting the magnetic pole, but
The magnetic poles may be indirectly detected by a photodetector or the like by equipping the sensor with auxiliary means (not shown) such as a reflector. Furthermore, the rotor (5
) may be used as an electromagnetic multi-pole magnetized body with a wire-shaped current-carrying part. In this case, the current-carrying means has an annular slip so that the current supplied to the winding-shaped current-carrying part always flows in a constant direction. A rotor current-carrying part consisting of a ring and a brush is provided (example is not shown).

In the embodiment shown in FIGS. 2 and 3 described above, and the configuration not shown, when direct current is applied through the current supply means (6), the magnetic field produced by the rotor (5) and the stator (
A force according to Fleming's left-hand rule is applied to the stator (3) due to the current flowing through the current-carrying part (4)' of 3), but the stator (3) does not properly support the support shaft (1). The rotor (5) is fixed to the rotor (5) and cannot be displaced by the force according to Fleming's left hand rule, and the reaction force of the force acts on the rotor (5).
rotates. Therefore, the outer cylinder member (2) to which the rotor (5) is fixedly mounted rotates around the support shaft (1).

This invention is not limited to the embodiments described above, but may include modifications in design without departing from the scope of the claims.

(Effects of the Invention) Therefore, according to the present invention, it is possible to provide an extremely simple and compact drive roller, so that, for example, in a rotary press that uses web material, it is possible to easily feed the web using the drive roller even in a place where many rollers are crowded. It becomes possible to install rollers, and maintenance becomes easy.

Further, since the roller itself is a driving body, a structure that mediates driving force can be omitted, and driving efficiency is also extremely good.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a schematic configuration of an embodiment of the present invention;
2 and 3 are perspective views schematically showing the general structure of other embodiments of the present invention, and FIG. 4 is a diagram showing the schematic structure of a rotary press that can use the roller of the present invention. be. (1)・・Support shaft, (2)・・Outer cylinder member, (3)
・・・Stator, (4) ・Stator winding (current carrying part), (
4)' ・ Current-carrying part, (5) ・ Rotor, (6)...
・Electrification means, (7)...Bearing, (8) ・Deep hole, (9)・・Small hole, (10)・Cooling fan, (11
)...Small hole, (12)...Wound-shaped current-carrying part, (1
3)-Rotor current carrying part, (14) semiconductor switch,
(15)... Detection section, GR... Guide roller, FO/folding section, P ・Printing section, S ・Paper feeding section Patent applicant Tokyo Kikai Seisakusho Co., Ltd., agent patent attorney
Tadashi Yasuhara 2nd Yasuhara
Masayoshi Hara~11-

Claims (1)

[Claims] (1) A support shaft, an outer cylindrical member rotatably supported on the support shaft, a stator including a current-carrying part and fixed to the support shaft, and a stator fixed to the outer cylindrical member so as to face the stator. 1. A web feed roller comprising a rotor and current-carrying means for energizing at least a current-carrying portion of the stator.