JPS6264546A - Roller attaching/detaching device - Google Patents

Abstract

PURPOSE:To enable a roller to be attached and detached after easily releasing both ends of the roller from their contact under a condition where said roller is arranged with its circumference in contact with the other roller axially held in its position by moving an operation shaft along an inclined groove and shifting a movable shaft in a radial direction by only its eccentric amount with the roller and allowing the short shaft section at the end of said shaft to move out of said roller. CONSTITUTION:An operation knob 13 is tensely held toward the outside resisting a compression spring 14, and an operation shaft 11 is moved in a direction away from the shaft end of a wetting roller 2 along an inclined groove 10. Consequently, a movable 6 moves in a direction separated from the shaft end of the roller 2. The short shaft section 7 at the end of the movable shaft is shifted in spiral manner around a central axial line (a) of said section with its eccentric amount (e) as a radius. Then said section moves in a direction where it comes off the shaft end of the roller 2. However, at that time, as long as the short shaft section 7 is inserted in the shaft end of the wetting roller 2, the roller 2 moves to the plate barrel roller 1 side, axially supported by the short shaft section 7, and the short shaft section 7 of the movable shaft 6 comes off a sleeve 5 when an operation knob 13 has arrived at a position (c) away from an ink transfer roller 3. That is, the roller 2 is pulled out of the shaft end of the wetting roller 2.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for attaching and detaching one of a plurality of assembled rollers, and relates to a roller attaching and detaching device that also serves as a shaft support for a crawler.

For example, in a printing press, a dampening swimsuit roller is in contact with the first plate cylinder roller, and a dampening swimsuit is further rotatably supported with a dampening water transfer roller and an ink transfer roller in contact with the roller. In this case, the dampening bathing suit has an intermediate roller sandwiched between the plate cylinder roller, the dampening water transfer roller, and the ink transfer roller, so replacing such an intermediate roller is a very troublesome work. In particular, in cases where multiple rollers are pivoted and in contact with each other under pressure, such as in a printing press, disassemble the shaft support of the rollers and their surrounding parts, release the contact between the rollers, and then remove them. This work is extremely troublesome in structures such as printing presses, which do not have extra space around them.
There was also the risk of damaging the periphery of the trawler, which is weakening.

In the present invention, both sides of the rollers are arranged so that their circumferences are in contact with each other,
It is an object of the present invention to provide a roller attachment/detachment fIt that can be easily released from contact while other rollers remain pivotally supported in that position, and can be attached and removed.

Another object of the present invention is to serve both as an axis support for the cough roller and to fix (lock) the roller position when the roller is attached.
To provide a roller attachment/detachment device capable of attaching and detaching the roller and forming a gap Vc1 between the roller and another roller by simple operation of an operation knob even in a narrow space.

The roller attachment/detachment device according to the present invention includes a fixed eccentric bushing which is eccentrically disposed on the roller and opposite to the shaft end of the roller and has an inclined groove penetrating through the circumference thereof, and a fixed eccentric bushing which is arranged eccentrically on the roller and is arranged opposite to the shaft end of the roller, and which has a shaft movable in the axial direction. a movable shaft which is supported and has a short shaft portion formed at the end thereof in the same window as the roller and which can be inserted into the shaft end of the core roller; an operating shaft extending toward the outer side of the bushing, and by moving the operating shaft along the inclined groove, the movable shaft moves in the radial direction together with the roller by the amount of eccentricity thereof, and Make sure that the shaft part comes out of the roller.

Embodiments of the present invention will be described below with reference to one drawing.

FIG. 1 is a side view of a part of the roller attaching/detaching device according to the embodiment of the present invention cut along the axis, and FIG. 2 is a side view taken approximately along line n-1 in FIG. 1 and mainly showing the roller attaching/detaching operation. FIG. 2 is a cross-sectional view showing only the essential parts necessary for explaining. In the following embodiments, a case will be described in which a dampening suit for a printing press using a plate cylinder roller type is applied to a roller. The plate cylinder roller 1 has an uneven plate surface formed on its circumferential surface, and water and ink oil adhere to this surface, and as the roller rotates, they are transferred to the blanket cylinder roller in contact with the plate surface.

A dampening suit, which will be described later, is in contact with the plate cylinder roller IIC1, and in the dampening suit, an ink transfer roller 3 and a dampening water transfer roller 4 are in contact with the roller 2 and rotate with each other. The dampening water transfer roller 4 receives dampening water from a dampening water source roller partially immersed in a dampening water tank (not shown), and the water is deposited on the plate cylinder roller 1 via the roller 2 for receiving and taking away the dampening water. Further, the ink transfer roller 3 receives ink from an inking device (not shown), and the ink is deposited on the plate cylinder roller IVc via the roller 2.

Referring to FIG.
i It is hollow, and a short shaft part 7 of a movable shaft 6, which will be described later, is inserted into this hollow part via a bearing 17 and a sleeve 5.
It is rotatably supported on the shaft. The movable shaft 6 is the third
As shown in the figure.

The short shaft portion 7 protrudes from the end thereof eccentrically by e with respect to the central axis a. The central axis of the short shaft portion 7 coincides with the axis of the roller 2. A through hole 8 having a small diameter at the center is bored through the circumference of the movable shaft 6 in the diametrical direction.

The movable shaft 6 is supported so as to be movable in the axial direction on a fixed eccentric bushing 9 which is in the same window as the axis a of the movable shaft 6. The eccentric bushing 9 has a single threaded inclined groove 10 formed at a local portion thereof, penetrating from the outer circumferential surface to the inner circumferential surface. The operating shaft designated by reference numeral 11 has a screw hole formed at its tip.
is inserted into the local through hole 8 of the movable shaft 6 through the inclined groove lO of the eccentric bushing 9 in the radial direction, and is passed through the small diameter portion of the through hole from the hole end on the opposite side to the insertion side as shown in FIG. A bolt 12 is screwed into a screw hole at the tip of the operating shaft, thereby fixing the operating shaft 11 to the movable shaft 6. Operation axis 1
The other end of 1 extends to the outside of the eccentric bushing 9 and is the operating knob 1.
It is inserted in 3. As shown in FIG.
4 is installed. One end of the compression spring 14 is connected to the operating shaft 11
The tip 7 of the button contacts the flange portion 111, and the other end contacts the inner stepped portion 1311L of the operating knob, which causes the operating knob 13 to be pressed against the outer circumferential counterbore of the fixed eccentric bushing 9, and the knob 13 is moved. It is kept from happening. In order to smoothly slide the movable shaft 6 in the axial direction with respect to the eccentric bushing 9T/c, the movable shaft 6 is provided with a grease groove 15 and a grease nipple 16 extending inward from the shaft end and exposed to the shaft circumferential surface. provided.

The operating shaft 11 and operating knob 13 are as shown in A of FIGS. 2 and 4.
In this position, the short shaft portion 7 of the movable shaft 6 is inserted into the shaft end of the roller 2, as shown in FIG. At this time, the operating shaft 11 is at the groove end position of the inclined groove 10 near the roller 2 side.

As described above, in the dampening swimsuit, the roller 2 is pivotally supported by the short shaft portion 7 of the movable shaft 6 via the bearing 17 and the sleeve 5, so that the roller 2 is rotatable. When removing roller 2 from dampening swimwear.

First, in the dampening swimsuit shown in FIG. 2, the roller 2 is moved radially to the side to release the contact with the plate cylinder roller 1, and then the operation knob 13 is moved to the compression spring 14? 2 and 4, which shows the direction in which the operating shaft 11 along with the operating knob 13 is moved away from the shaft end of the roller 2 along the inclined groove 10Vc.
Move it in the direction of figure C. As shown in Figures 1 and 2, Ic
% As a result, the dampening swimsuit moves within the movable shaft 6Vi and the eccentric bushing 9 in a direction away from the shaft end of the roller 2 while performing a spiral movement regulated by the inclination $110. The short shaft portion 7 at the end of the movable shaft moves spirally around the center axis a of the movable shaft 6 as its eccentricity eft radius, and thereby moves in the direction of coming out of the shaft end of the roller 2. While the short shaft 7 is still wetted and the swimsuit is inserted into the shaft end of the roller 2, the roller 2 is supported by the short shaft 7 and together with its bearing 17 and sleeve 5 as shown in FIG. When the roller 2 moves away from the ink transfer roller 3 by moving in the direction of the arrow, that is, toward the plate cylinder roller 1 side (operating knob B position), and the operating knob 13 comes to position C in FIGS. 2 and 4, the movable shaft 6
The short shaft portion 7 of comes out of the sleeve 5.

That is, the wetted swimsuit slips out from the shaft end of the roller 2. Of course, at this time the roller 2 is supported from below by other means.

In this manner, the dampening suit can be freely removed at a position where the roller 2 is no longer in contact with the ink transfer roller 3 and has moved by a distance e in the direction of the arrow (position C in FIGS. 2 and 4). When attaching the roller 2 to the dampening swimsuit, move the operation knob 13 and the operation shaft 11 along the slope 1110 toward the shaft end of the roller 2, contrary to the above, and move the short shaft portion 7 of the movable shaft 6 toward the roller 2. Just insert it into the shaft end. When the operating shaft 11 reaches the groove end of the inclination @ 10, if the outward tension of the operating knob 13 is released, the operating knob 13 is held pressed against the outer peripheral counterbore of the eccentric bushing 9 by the spring force of the compression spring 14. The knob 13 and the operating shaft are locked.Also, at the end of the workday, the dampening suit creates a gap between the roller 2 and the ink transfer roller 3.τThe dampening suit prevents deformation of the rubber covering the roller surface. This gap can be created by setting the B position ii'/c operation knob 13 shown in FIGS. 2 and 4.

As explained above, according to the present invention, even if the rollers are placed in contact with each other, it is possible to remove and install them with a simple knob operation, and to create a temporary gap between the rollers. It has the advantage of being able to function as a shaft support for rollers.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view of a roller attachment/detachment device according to an embodiment of the present invention, FIG. 2 is a schematic diagram for explaining the roller attachment/detachment operation approximately along the line ■-■ in FIG. 1, and FIG. The figure is a partially cutaway side view of the movable shaft according to the present invention, and FIG. 4 is a diagram showing an inclined groove on the circumference of the eccentric pusher. 1... Plate cylinder roller, 2... Dampening roller, 3... Ink transfer roller. 4... Dampening water transfer roller, 6... Movable shaft. 7...Short shaft portion, 9...Eccentric bush, 10...Slanted groove, 11.°° operation shaft. 12...Bolt, 13...Operation knob,
14... Compression spring. Sub-agent Patent Attorney Rikichi Somekawa

Claims (1)

[Claims] a fixed eccentric bush that is eccentrically disposed opposite to the shaft end of the roller and has an inclined groove penetrating through the circumference thereof;
a movable shaft supported movably in the axial direction by the fixed eccentric bushing and having a short shaft portion formed at an end thereof coaxially with the roller and insertable into the shaft end of the roller; and a movable shaft fixed to the movable shaft. and an operating shaft penetrating the inclined groove of the fixed eccentric bushing and extending to the outer side of the bushing, and by moving the operating shaft along the inclined groove, the movable shaft is moved by the eccentric amount thereof. A roller attachment/detachment device that moves in the radial direction together with the roller and has a short shaft portion at the end of the roller that comes out of the roller.