JPS61237645A - Regulator for rocking amount of roller in inking device of printer - Google Patents

Abstract

PURPOSE:To easily regulate the rocking amounts of rollers according to the kinds of printing materials for an inking device with various roller group arrangements by connecting a groove cam with a roller through a cam follower. CONSTITUTION:Adjacent rollers 8 and 9 are connected with an arm 12, and the roller 9 of these rollers 8 and 9 is connected to the frame 13 with a rotary shaft 27 set rotationally through a bearing 26 in parallel with the rollers 8 and 9 and an arm 28. One end of the shaft 27 is projected outwards through one frame 13, and the projected end forms an inclined shaft 27a with any angle (alpha) to the axis (a) of the shaft 27. A groove cam 29 is fixed to the shaft 27a by a bolt 30 in an adjustable manner with respect to the position of the turning direction. Cam followers 31 and 31' provided to both ends of the arm 28 are fitted into the round cam groove 29a of the cam 29 and the annular groove 17a of the guide wheel 17 in a slidable manner toward turning directions and also in a state of being stopped with respect to the axial movement.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for adjusting the amount of swing of a swing roller in a one-ink device of a printing press.

[Conventional technology]

Conventionally, the above-mentioned roller swing amount adjusting device is
One disclosed in Japanese Patent No. 6864 is known.

In this device, an inclined shaft part is provided on a rotating shaft pivotally supported by a frame in the center of a group of swinging rollers, and the inclined shaft part is tilted with respect to the axis of the inclined shaft part by selecting a position in the circumferential direction. A cylindrical sleeve is fixed, a disc is rotatably attached to this sleeve, a group of swing rollers is rotatably supported on each spherical bearing of the disc, and as the rotating shaft rotates, the disc rotates. The structure is such that a group of swinging rollers is individually swung.

However, in the above-mentioned device, since each roller is pivotally supported on one disc, the rotating shaft must be attached to the center of the group of rollers, and the attachment position cannot be changed arbitrarily. . It is fine if the rollers are arranged in a virtual circle, but if the rollers are arranged in a long strip, for example, a very large disc will be required, which will only cause problems in terms of installation space. However, since the distance between the rotational axis and the axis of each roller differs greatly for each roller, it may not be possible to implement it because the amount of oscillation differs greatly for each roller, and the range of use is limited. There are other problems.

[Problem that the invention seeks to solve]

Therefore, the present invention was developed in view of the above-mentioned conventional problems.
Adjacent rollers are connected by arms 1
In a roller swinging device for a printing device, a rotating shaft rotatably supported on a frame is provided with an inclined shaft portion, and a grooved cam in which a shaft hole having an inclination angle equal to that of the inclined shaft portion is provided in the inclined shaft portion is rotated. By fixing the directional position so that it can be arbitrarily adjusted, and connecting the grooved cam and the rollers of the above rollers with an arm via a cam follower, it is possible to arrange various rollers in groups. The roller swing amount can be easily adjusted in accordance with the type of printed material by using a tilted shaft portion of the rotary shaft and a grooved cam having the same tilt angle as the tilted shaft portion. is its purpose.

[Means for solving problems]

That is, in the present invention, adjacent rollers are connected to each other by arms that are swingable about a bracket of a frame as a fulcrum, and have an arbitrary inclination angle with a rotating shaft supported on the frame in parallel with the rollers. An inclined shaft portion is provided, and a grooved cam having a shaft hole having an angle of inclination equal to that of the inclined shaft portion is fixed to the inclined shaft portion so that the position in the rotational direction can be adjusted. The above-mentioned problem was solved by connecting one roller with an arm that can freely swing around the bracket of the frame as a fulcrum.

〔Example〕

Embodiments of the present invention will be described in detail below based on the drawings.

First, the 1-ink device of the printing press is as shown in Figure 3.
One ink 2 of the ink pot 1 is sequentially transferred in small quantities to a group of many kneading rollers 4 via a pick-up roller 3, where it is kneaded evenly and transferred to the plate cylinder 5. The group 4 of many kneading rollers consists of a combination of metal rollers and rubber rollers, among which metal rollers 6.
Reference numerals 7, 8, and 9 are called swinging rollers, and while rotating, a swinging device makes a reciprocating rocking movement from side to side (in the axial direction) to knead one ink evenly.

The roller swing amount adjusting device of the present invention is configured as follows.

As shown in FIGS. 1 to 3, adjacent rollers 6, 7.7, 8.8, and 9 are connected to arms 10, 11,
It is connected in 1.2.

That is, each of the rollers 6 to 9 has a respective roller shaft 6a,
The roller shafts 7a, 8a, and 9a are rotatably and slidably installed in the frame 13 of the device via bearings 31, and extend outward from the frame 13 of one of the roller shafts 6a to 9a. An annular groove 14a, 1 is formed in the protruding end.
Guide wheel 14 having 5a, 16a, 17a
, 15 , 16 , and 17 are fixed by bolts 18 , respectively.

On the other hand, a cam-yt is provided at both ends of each of the arms 10 to 12.
'719. Icf, 20, 20', 21, 2f are respectively attached, and the cam followers 19-21'' are circumferentially inserted into the annular grooves 14a-17a of the guard shafts 14-17 of the respective roller shafts 6a-9a. Each arm 10 to 12 is fitted to each platen 22 , 23 , 24 with its center portion erected on the outer surface of the frame 13 . Axis of bolt etc. 5
The rollers 6, 7, 7, 8.
8 and 9 are adapted to be swung in opposite directions.

Further, among the rollers 6 to 9, the rollers, in the illustrated example, p-roller 9, are rotatably installed on the frame 13 in parallel with the rollers 6 to 9 via bearings 2G. 27 and an arm 28.

That is, one end of the rotating shaft 27 penetrates one frame 13 and protrudes outward, and the protruding end is an inclined shaft portion having an arbitrary inclination angle α with respect to the axis a of the coaxial shaft 27. 27 a VC is formed, and the inclined shaft portion 27
a The K-groove cam 29 is fixed with bolts 30 so that its position in the rotational direction can be adjusted, and the arm is inserted into the circular cam groove 29a of the groove cam 29 and the annular groove 17a of the guide wheel 17. The lowers 31 and 31' of the cam 7 attached to both ends of the arm are fitted in such a manner that they can slide freely in the rotational direction but are prevented from moving in the axial direction, and the central part of the arm is connected to the frame 13. It is pivotally attached to a bracket 32 erected from the outer surface of the housing by means of a pivot 33 such as a bolt so as to be able to swing alternately in the axial direction.

Further, the grooved cam 29 has a shaft hole 29b passing through it for fitting and sheathing the inclined shaft portion 27a. It is provided not at right angles to a but at an arbitrary inclination angle β.

In this case, the inclination angle α of the inclined shaft portion 27a and the inclination angle β of the shaft hole 29b of the grooved cam 29 are set in advance to be the same angle, and the inclined shaft portion 27a and the grooved cam If the positional relationship of the cam grooves 29 in the rotational direction is the same as shown in FIG. 2
The swing width of 9a is the largest, and rollers 9, 8, 7
．． The amount of axial rocking at No. 6 is the maximum.

Further, the rotational direction positional relationship between the inclined shaft portion 27a and the grooved cam 29 is shifted by 180 degrees in the rotational direction from the position shown in FIG.
51Cj as shown in the figure, the inclination angle α of the inclined shaft portion 27a,
Since the inclination angle β of the shaft hole 29b in the grooved cam 29 is the same angle, they cancel each other out and the cam groove 29a becomes perpendicular to the axis a of the rotating shaft 27, so the runout width of the cam groove 29a becomes OvC, and the amount of swing of each roller 9 to 6 becomes 0.

The rotating shaft 27 is rotated by the driving source of the printing press, and the rotation of the rotating shaft 270 is transmitted to the rotation stop groove cam 29, and the cam groove 29a has an arbitrary inclination angle with respect to the axis a. At this time, the swinging force is transmitted to the roller 9 via the arm 4 based on the swing width of the cam groove 29a, and the roller 9 swings.

The rocking force of the roller 9 is transmitted to the roller 8 via the arm 12, and further to the roller 8 and the roller 7.
In this case, the rollers 9.7 and 8,6 are alternately swung in opposite directions.

〔Effect of the invention〕

As explained above, the unexploded E! Since the roller swing amount adjustment device in the inking device of the printing press related to A is configured, if you want to change the kneading level of one ink depending on the type of printed matter, for example, you can blur the boundary between two colors and print one ink. In printing, etc., there are cases where it is desired to reduce the amount of rocking of the rollers 6 to 9, but in some cases, the amount of swinging of the rollers 6 to 9 may be reduced.
If it is desired to increase the amount of rocking of the roller, the amount of rocking of the roller can be easily adjusted as desired by arbitrarily selecting the relative positional relationship in the rotational direction of the grooved cam 29 with respect to the inclined shaft portion 27a of the rotating shaft 27. Also, since the shaft hole 29b of the grooved cam 9-129 is provided at an angle of inclination β equal to the inclination angle α of the inclined shaft portion 27a with respect to the axis a of the rotating shaft 27, The inclination angle of the cam groove 29a can be changed by as much as α and β, and the roller swing amount can be arbitrarily adjusted steplessly from O to the maximum.
and 8. 8 and 9 are connected by arms 10 to 12, respectively, and of the rollers 6 to 9, the - roller is connected to the rotating shaft 27.
Since the structure is such that the rotary shaft 27 is connected to the arm rotor and the grooved cam 29, the rotating shaft 27 can be installed at any position regardless of the arrangement of the rollers.
The present invention can be implemented in a printing device, and can be manufactured easily and inexpensively by simply adding a rotating shaft 27 and a grooved cam 29 to a conventional device in which adjacent rollers are connected by an arm.

[Brief explanation of drawings]

FIG. 1 is an exploded longitudinal sectional plan view showing a state where the amount of roller oscillation is maximum in an embodiment of the roller oscillation amount adjusting device in a one-ink device of a printing press according to the present invention, and FIG. Fig. 3-10- is a developed vertical plan view showing the state of @amount O, Fig. 3-10- is a schematic side view of the roller arrangement state in a 1-ink device of a printing press equipped with the same device, and Fig. 4 is a schematic side view of the roller arrangement state in the same embodiment. It is a longitudinal side view of a grooved cam. 6-9...Roller 10-12, 28...Arm 13...Frame 22-24, 32...
・Bracket 27...rotating shaft 27 a・
... Inclined shaft portion 29 ... Groove cam 29 b.
...Shaft hole α...Inclination angle of the inclined shaft part β...Inclination angle of the shaft hole! Fig. 1 13: Frame 27: Rotating shaft 27a: Inclined shaft part

Claims (1)

[Claims] Adjacent rollers are connected to each other by arms that are swingable about the bracket of the frame as a fulcrum, and a rotating shaft supported on the frame in parallel with each of the rollers is provided with an inclined shaft portion having a coaxial center and an arbitrary inclination angle. A grooved cam having a shaft hole having an inclination angle equal to that of the inclined shaft is fixed to the inclined shaft so that the position in the rotational direction can be adjusted arbitrarily, and the grooved cam and one of the rollers are fixed to the inclined shaft. 1. A roller swing amount adjusting device for an inking device of a printing press, characterized in that the rollers are connected by an arm that is swingable about a bracket of a frame as a fulcrum.