JP2875856B2 - Swing rider drive - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial application field> The present invention relates to a drive device for a swing rider in a printing press. For example, in a water supply device or the like, when water is not supplied, the swing rider stops reciprocating motion. Pertaining to what has been done.

<Prior Art> FIG. 3 schematically shows a water supply device of an offset rotary printing press. Reference numeral 1 denotes a plate cylinder, the surface of which is in contact with a rubber swimsuit roller 2. The swimsuit roller 2 is brought into contact with and separated from the plate cylinder 1 by an air cylinder and a lever mechanism (not shown). On the other hand, a water source roller 4 is immersed in the watercraft 3, a metering roller 5 contacts the water source roller 4, a swing roller 6 contacts the metering roller 5, and the swing roller 6 is It is in contact with roller 2. The oscillating roller 6 is reciprocated, that is, oscillated in the axial direction by a cam mechanism or the like (not shown).

In such a water supply device, the water in the watercraft 3 is pulled up by the water source roller 4, transferred to the swing roller 6 via the metering roller 5, transferred from the swing roller 6 to the swimsuit roller 2, and moved from the swimsuit roller 2. It is transferred to the plate surface of plate copper 1.

By the way, in the above-mentioned water supply device, when the printing press is operated for a long time, water leakage or ink spillage occurs near both ends of the swimsuit roller 2, which causes stains on both ends of the printed matter. was there.

Therefore, conventionally, a metal swing rider (roll) 7 is brought into contact with the upper part of the ink application roller 2 and the swing rider 7 is reciprocated in the axial direction, so that the drainage near both ends of the swimsuit roller 2 is reduced. The ink was prevented from being entangled. The reciprocating movement of the swing rider 7 in the axial direction is obtained by interlocking with the swing roller 6 via a groove cam mechanism or the like.

<Problems to be Solved by the Invention> By the way, when checking the printing press or the like, the printing press may be operated at a low speed in a state where the water roller 4 is pulled up from the watercraft 3. In this case, since the water does not come up to the swimsuit roller 2, the swimsuit roller 2 and the swing rider 7 are rubbed in the axial direction, and the rubber surface of the swimsuit roller 2 is peeled. Sometimes happened.

Such a problem similarly occurs when the swing rider is used in another roll device such as an ink device. For example, there is a case where when a swing rider is used to knead or level ink in an inking device, the swing rider shakes the rider even though ink is not supplied.

<Means for Solving the Problems> In order to solve the above problems, according to the present invention, in a device in which a swing rider in contact with a roller is mechanically linked to the movement of the swing roller, the swing rider is connected to the swing rider. One end of the lever is connected to the shaft, the middle of the lever is pivotally supported, the other end of the lever is used as an engaging portion, and a spring force is applied to the lever so that the engaging portion engages with the end of the swing roller. On the other hand, a moving device for moving the lever so as to separate the engaging portion from the end of the swing roller against the spring force is provided to constitute a swing rider driving device.

<Operation> In the swing rider drive device, if the moving means is operated to separate the engagement portion at the lever end from the swing roller end, even if the swing roller reciprocates in the axial direction, the movement is not affected by the swing rider. I don't get it. Therefore, the swing rider does not rub against the roller.

During normal operation, the lever is released from the restraint by the moving means, and the engaging portion at the lever end is engaged with the swing roller end by spring force. The movement of the swing roller is transmitted to the swing rider via the lever and the shaft, and the swing rider reciprocates in the axial direction with respect to the roller.

<Embodiment> An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a swing rider driving device according to an embodiment applied to a water supply device as viewed from the front side of a printing press, and FIG. 2 shows a side view of a swing rider and the like.

The swimsuit roller 2 is supported by a lever 8, and is attached to and detached from the surface of the plate cylinder 1 by rotation of the lever 8 by operation of an air cylinder 9 connected to the lever 8. The swing rider 7 that contacts the upper part of the swimsuit roller 2 is also supported by the lever 8.

The swing rider 7 includes a center shaft 7a and a body 7c rotatable on the center shaft 7a via a bearing 7b. Support shafts 12, 13 are provided at both ends of the center shaft 7a via caps 10. When these support shafts 12 and 13 are connected, the spherical bearing 14 and the eccentric metal 15
And is supported by the lever 8. Support shaft 12, 13
Can slide in the axial direction in the spherical bearing.

One support shaft 13 extends out of the frame 16 through a hole 17 provided in the frame 16 of the printing press.
One end of a rod 19 having a turnbuckle 18 has a spherical bearing 20
Are connected via

On the other hand, a stand 21 is provided on the side surface of the frame 16, and a middle portion of a lever 22 is pivotally attached to a tip end of the stand 21, and the lever 22 can swing around the pivot point 23.
One end of the lever 22 is connected to the other end of the rod 19 via a spherical bearing 24, and the other end of the lever 22 is provided with a cam follower (roller) 25 as an engaging portion. The cam follower 25 faces the bearing case 26 at the end of the swing roller 6. A pulling spring 27 is provided between the pivot point 23 of the lever 22 and the cam follower 25 and between the printing press frame 16.
A spring force in a direction to press the cam follower 25 against the bearing case 26 is applied to the lever 22 by the lever 27. That is, the reciprocating motion of the swing roller 6 in the axial direction is transmitted to the lever 22 through the engagement between the bearing case 26 and the cam follower 25, and the swing of the lever 22 is swinged through the rod 19 and the support shaft 13. The swing rider 7 is reciprocated in the axial direction with respect to the swimsuit roller 2.

An air cylinder 28 is provided on the frame 16, and a pin 30 is provided at a tip end of the piston rod 29. By retracting the piston rod 29 by the operation of the air cylinder 28, the pin 30 is pivotally connected to the lever 22. It hits the middle of 23 and rod 19 connection part. Therefore,
By shortening the air cylinder 28, the lever 22
Can be moved in a direction in which the cam follower 25 moves away from the bearing case 26 against the spring force of the pulling spring 27. That is, in this embodiment, the air cylinder
The pins 28, 30 and the like constitute the moving means.

In the water supply device having the above configuration, during normal operation of the printing press, the air cylinder 28 is in an extended state, and the pin 30 is not engaged with the lever 22. Therefore, as described above, the reciprocating motion of the swing roller 6 includes the lever 22, the rod 19, and the support shaft.
The swing rider 7 is reciprocated with respect to the swimsuit roller 2 in a state of being shifted from the swing roller 6 by a half cycle. Therefore, water bleeding and ink spilling at both ends of the swimsuit roller 2 are prevented.

When the printing press is operated at a low speed with the water roller 4 pulled up from the water of the watercraft 3 when checking the printing press, the air cylinder 28 is pulled, the lever 30 is pulled by the pin 30 and the spring 27 is pulled. And the cam follower 25 is cut off from the bearing case 26. In this state, the movement of the swing roller 6 is not transmitted to the lever 22, and the swing rider 7 stops in a state of being shifted to one side (the left side in FIG. 1). That is, the swimsuit roller 2 and the swing rider 7 that are not supplied with water do not rub against each other in the axial direction, and damage such as peeling of rubber on the surface of the swimsuit roller 2 is prevented.

To shift to normal operation, the air cylinder 28 may be set in the extended state. The spring force of the pull spring 27 works,
The cam follower 25 is elastically pressed against the bearing case 26, the movement of the lever 22 follows the movement of the swing roller 6, and the swing rider 7 reciprocates as described above.

When the lever 8 is rotated by the air cylinder 9 to separate the swimsuit roller 2 from the surface of the plate cylinder 1, the axis of the swing rider 7 and the position of the end of the lever 22 are misaligned.
And the end of the lever 22 are connected via the rod 19 and the spherical bearings 20, 24, so that the misalignment is absorbed in this portion.

Further, since the swimsuit roller 2 follows the twist of the plate cylinder 1, the center of the left and right levers 8 holding the support shafts 12 and 13 is shifted, but the spherical surface supporting the support shafts 12 and 13 is displaced. The swinging rider 7 twists and follows the plate cylinder 1 like the swimsuit roller 2 by the bearing 14. Adjustment of the nip pressure of the swing rider 7 with respect to the swimsuit roller 2 is performed by adjusting the eccentric metal 15 supporting the support shafts 12 and 13.

Further, in the above-described embodiment, the means including the air cylinder 28, the pin 30, and the like are employed as the moving means of the lever 22, but other actuators and mechanical moving mechanisms may be employed, and the position at which the lever 22 is provided may also be employed. Stand 21 and rod 19
The space may be provided in parallel with the pulling spring 27 or at another position if space permits.
In short, any mechanism can be used as long as it can move the lever 22 against the spring force of the pulling spring 27 to separate the bearing case 26 and the cam follower 25.

In the above embodiment, the present invention is applied to a water supply device of a printing press. However, the present invention can be similarly applied to a case where a swing rider is employed in an inking device and other roll devices.

<Effect of the Invention> According to the swing rider driving device according to the present invention, since the connection between the swing roller and the swing rider can be separated, the swing rider swings with respect to the roller when water, ink, or the like is not supplied. Can be stopped, thereby avoiding damage to the rollers and swing riders. For example,
When applied to a water supply device, when the water does not come up to the swimsuit roller, the reciprocating motion of the swing rider can be stopped, so that the swimsuit roller in a dry state and the swing rider rub against each other Damage such as peeling of rubber on the surface of the swimsuit roller can be prevented, and the life of the swimsuit roller can be extended. During the normal operation of the printing press, the swing rider swings in conjunction with the swing roller, so that water at both ends of the swimsuit roller and ink spillage are effectively prevented.

[Brief description of the drawings]

FIG. 1 is a front view showing a partial cross section of a swing rider driving device in a water supply device according to one embodiment of the present invention, FIG. 2 is a side view of the swing rider and the like, and FIG. 3 is a schematic diagram of the water supply device. is there. In the drawing, 1 is a plate cylinder, 2 is a swimsuit roller, 4 is a water roller, 5 is a metering roller, 6 is a swing roller, 7 is a swing rider, 12, 13 is a support shaft, 14 is a spherical bearing, and 15 is eccentric. Metal, 16 is a printing press frame, 19 is a rod, 21 is a stand, 22 is a lever, 25 is a cam follower, 26 is a bearing case, 27 is a pull spring, 28 is an air cylinder, and 30 is a pin.

Claims (1)

(57) [Claims] 1. A device in which a swing rider in contact with a roller is mechanically linked to the movement of the swing roller, wherein one end of a lever is connected to a shaft connected to the swing rider, and the middle of the lever is pivoted. The other end of the lever is used as an engaging portion, and a spring force is applied to the lever so that the engaging portion engages with the end of the swing roller, while the engaging portion is opposed to the spring force. A moving device for moving the lever to move the lever away from the end of the swing roller.