JPS6124528Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for adjusting the phase of a web that shifts in the transport direction between a printing device and a folding machine in a web rotary printing press by remote control of a motor.

Rolling paper rotary printing presses are generally equipped with a folding machine that cuts and folds the printed web into a predetermined size. After the web of the printing machine is dried and cooled, it is changed to a right angle direction by the turn bar of the folding machine, and then folded by a drag roller. It is sent to the origami department. The web, which is conveyed over a long distance between the printing device and the origami section of the folding machine while being changed in direction by a large number of rollers, is often fed into the origami section with the pattern in the vertical direction incorrectly registered. Therefore, in order to adjust this, a compensator roller supported by a swing arm is provided in front of the origami part to adjust the length of the web.

Conventionally, this compensator roller was manually operated and fixed after adjustment, so there was no possibility that the roller would vibrate during the printing process and result in poor registration accuracy at the origami section. recent years,
As printing presses become faster, labor-saving efforts are being made in various parts of the machine, such as attaching a motor to the compensator roller and controlling it remotely, and even detecting registration errors and automatically correcting them using the motor. Although this method saves labor, it also makes fixing the compensator roller unstable and makes it difficult to maintain registration accuracy.

Conventionally, attempts have been made to solve this problem by attaching an electromagnetic brake to the motor for driving the compensator roller to fix the roller in the adjusted position, or by using an expensive pulse motor. I could not expect a satisfactory effect.

The present invention was developed in view of the above points, and involves screwing a threaded rod into a female threaded member pivotally attached to the free end of a swinging arm that is integrated with the swinging shaft of the compensator, and one end of the threaded rod. The output shaft of the motor fixed to the motor base on the frame side is non-rotatably but slidably connected by a coupling ring equipped with a sliding key, and the motor base supports the threaded rod while restricting its movement in the axial direction. By supporting the screw rod so that it can rotate freely in the oscillating direction of the threaded rod, the compensator roller is fixed in the adjustment position by the threaded engagement of the screw member, and the thrust load and oscillating motion of the threaded rod are received and absorbed by the motor base. The present invention provides a web phase adjustment device for a web-fed rotary printing press, which is configured as follows and is capable of stabilizing the compensator roller after adjustment and improving the durability of the motor with a simple configuration. Embodiments of the present invention will be described in detail below with reference to the drawings.

1 to 4 show an embodiment of the web phase adjusting device according to the present invention, FIG. FIG. 3 is a partially developed plan view of the web phase adjustment device driving section in FIG. 2, and FIG. 4 is a plan view from B in FIG. 3. This embodiment shows an example in which the present invention is applied to a two-web web type rotary printing press, in which an upper web 2 that is naturally dried in the atmosphere after printing and a lower web 2 that is dried in a dryer are sent to a cooling device 1. web 3 is guided. Among these, the upper web 2 is sent out by a rotationally driven drag roller 4, and then changed direction by a plurality of guide roller groups 5 and guided to a folding machine 6. After being cooled by cooling rollers 7, 8, and 9, the sheet is directed to a folding machine 6 by a group of guide rollers 10.
A slitter 11 cuts the web 2 in half in the width direction.

The folding machine 6 includes a plurality of drag rollers 13, 14, 15, 16 that send the upper and lower webs 2, 3 guided from the cooling device 1 to the origami section 12, and a plurality of drag rollers 13, 14, 15, 16 that feed the upper and lower webs 2, 3 led from the cooling device 1, and the webs 2, 3 installed at an angle of 45 degrees. The origami section 12 includes a tambar 17 that turns the direction at right angles, and a former 18 that folds the webs 2 and 3, which are formed in a triangular plate shape and are not turned by the turn bar 17, in half in the width direction. Half-folded web 1
A group of folding cylinders 21 is provided, which includes a folding cylinder, a cutting cylinder, and a grip cylinder for cutting and origami paper sheets 9 and 20 into predetermined dimensions.
FIG. 1 shows various paper threading conditions for origami performed using the turn bar 17, former 18, and folding cylinder group 21.

The drag rollers 13, 14,
In addition to 5, 16, a plurality of guide rollers 22, 23, 24, 2 that guide the webs 2, 3 are attached.
5, 26, . . . are provided, and a plurality of compensator rollers 27, 28, 29 for adjusting the cutting device for the webs 2, 3 are provided with substantially the same structure. Therefore, the configuration of the compensator roller 27 among the compensator rollers 27, 28, and 29 will be explained based on FIGS. 1 to 4. That is, the left and right folding machine frames 30
The guide roller 24 as a support shaft is rotatably supported on the guide roller 24, and a frame 3 is attached to both ends of the guide roller 24.
Left and right arms 31 fixed adjacent to the inner surface of 0
A compensator roller 27 is rotatably supported at the free end of the roller. A swinging arm 32 is fixed to the shaft end of the guide roller 24 protruding from the frame 30 on one side in substantially the same phase as the arm 31 in the circumferential direction of the guide roller 24.
A connecting stud 33 serving as a female screw member having a screw hole 33a is rotatably attached to the free end thereof. 34 is a grease cup equipped with a flexible tube 35. A threaded rod 36 is screwed into the threaded hole 33a of the connecting stud 33, and the threaded rod 36 and the swing arm 32 are substantially orthogonal to each other as shown by the chain line 32A in FIG. ,
In FIGS. 2-4, the swing arm 32 is shown unfolded and turned 90 degrees from the position 32A to the position 32. Further, the connecting stud 33 is configured to eliminate play in the threaded portion by screwing together a pair of members 33c and 33d, which are movably coupled together with a bolt 33b, with a threaded rod 36.

The reference numeral 37 is a motor base integrally formed by welding a box-shaped bearing portion 37a and a flat board 37b into an L-shape.
One end of the threaded rod 7b is rotatably supported on the frame 30 by a pin 38, and one end of the threaded rod 36 is rotatably supported on the bearing portion 37a. Also,
The bearing portion 37a has an output shaft 3 concentric with the threaded rod 36.
A motor 40 with a speed reduction mechanism equipped with a motor 9 is fixed by a bolt 41, and the thread groove 36 and the output shaft 39 are connected by a coupling 42.
The movement of the threaded rod 36 in the axial direction is regulated by a coupling ring 42, a collar 43, and oil-impregnated thrust washers 44, 45 inserted between these and the side plate of the bearing portion 37a. In addition, the output shaft 39 of the motor 40 is fitted with a sliding key 46 provided at the fitting portion with the coupling ring 42.
It is formed so as to be non-rotatable and slidable relative to the coupling ring 42. Furthermore, cup ring 4
The motor base 37 that pivotally supports the threaded rod 36 coupled to the output shaft 39 at 2 is rotatable in the swinging direction of the threaded rod 36 by being pivotally supported by the pin 38, and the free end of the board 37b long hole 37c
The frame 3 is rotated while being allowed to rotate by a headed pin 47 inserted into the frame 30 and screwed into the frame 30.
Rising from 0 is regulated.

The operation of the web phase adjustment device including the compensator roller 27 and its adjustment drive device 48 configured as described above will be explained. The web 2 guided from the cooling device 10 to the origami section 12 via guide rollers 22, 23, 24, 25, drag roller 13, etc., and turn bar 17 or former 18 is provided between guide rollers 23 and 24. The phase is adjusted by a compensator roller 27. That is, when the motor 40 with a speed reduction mechanism is rotated, the threaded rod 36 connected to the output shaft 39 by the coupling 42 rotates, and the connecting stud 33 screwed thereto advances and retreats in the axial direction of the threaded rod 36. . Since the threaded rod 36 and the swing arm 32 are substantially perpendicular to each other, the connecting stud 3
3 moves back and forth, the swinging arm 32 swings, and the arm 31 fixed to the guide roller 24 integrated with the swinging arm 32 swings to move the compensator roller 2
7 revolves around the guide roller 24, the length of the web 21 attached thereto changes between the guide rollers 23 and 24, and the phase of the pattern on the web 2 is adjusted.

In this phase adjustment operation, the rotation of the threaded rod 36 causes the connecting stud 33 to advance and retreat and the swinging arm 32 to swing, thereby changing the distance between the axis of the guide roller 24 and the axis of the threaded rod 36. Threaded rod 36
shakes his head, but since the motor base 37 is rotatably supported by the pin 38, the motor base 37
and the motor 40 fixed thereto is a threaded rod 36
The rotation of the output shaft 39 and the threaded rod 36 is not hindered by rotating around the pin 38 following the oscillation of the shaft. Furthermore, when the web 2 runs, the compensator roller 27 tries to vibrate due to its own weight and the tension of the web 2 acting in the opposite direction.
3 and the threaded rod 36 are screwed together with a bolt 33b with no play, and the threaded rod 36
However, thrust washers 45, 44 and collar 4
3. Since movement in the axial direction is restricted by the coupling ring 42, no vibration occurs. In this case, the tension of web 2 may vary depending on the paper quality.
It can reach up to 100Kg, and this is a threaded rod of 36
This thrust load acts on the motor 40 side as a thrust load, but since this thrust load is completely received by the motor base 37, it does not reach the motor 40, and the motor 40, which can normally withstand only a thrust load of about 10 kg, generates heat. No damage or wear. Furthermore, the coupling ring 42 and the motor 4
0 output shaft 39 with a sliding key 46, the compensator roller 27
Even if the coupling ring 42 moves slightly due to a reverse load from the side, it will not affect the motor 40.

In this embodiment, an example in which the present invention is applied to the compensator roller 27 is shown, but it can be similarly applied to other compensator rollers 28, 29, etc. Note that the present invention is particularly effective when, like the compensator roller 27, an upward component force acts on the roller 27 due to the tension of the web 2.

As is clear from the above description, according to the present invention, in a web phase adjustment device of a web rotary printing press, a screw is attached to a female threaded member pivotally attached to a free end of a swinging arm that is integrated with a swinging shaft of a compensator. A rod is screwed in, and one end of this threaded rod is connected to the output shaft of the motor fixed to the motor base on the frame side in a non-rotatable but slidable manner using a coupling ring equipped with a sliding key, and the threaded rod is moved in the axial direction. The compensator roller can be adjusted by screwing the screw member and supporting it by the motor base after adjusting the phase of the web. It is fixed in position, and the thrust load from the running web is completely absorbed by the motor base and does not reach the motor. This improves the durability of the motor, which is often used with general-purpose motors, and also eliminates the vibration of the compensator roller. This structure significantly improves the web phase adjustment function. In addition, even if the motor's output shaft shakes during phase adjustment, the motor base is rotatable, so the adjustment operation is not hindered and full functionality is ensured.Furthermore, the position of the compensator roller can be set by considering space and operational conditions first, without being restricted by the adjustment drive device, and it is possible to improve functionality and operability.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the web phase adjusting device for a paper web rotary printing press according to the present invention.
The figure is a paper threading diagram of the cooling device and folding machine of a printing press that implemented this, Figure 2 is an enlarged plan view from A in Figure 1, and Figure 3 is a diagram of the web phase adjustment device drive section in Figure 2. FIG. 4 is a partially developed plan view, and FIG. 4 is a plan view from B in FIG. 24... Guide roller, 27... Compensator roller, 30... Frame, 31... Arm,
32... Swinging arm, 33... Connection stud, 3
6... Threaded rod, 37... Motor base, 38...
Pin, 39... Output shaft, 40... Motor, 42...
...Coupling, 43...Color, 44,45...
...Oil-less thrust washer, 46...Slide key.

Claims (1)

[Scope of utility model registration request] A support shaft rotatably supported at both ends on the left and right machine frame sides, a compensator roller supported at both ends by an arm integrated with the support shaft, and a compensator roller pivotally attached to the ends of the support shaft. a swinging arm, a female threaded member pivotally attached to a free end of the swinging arm, a threaded rod screwed into the female threaded member and extending in a direction substantially perpendicular to the swinging arm; a motor base supported on a frame side, the one end of which is rotatably supported while restricting movement in the axial direction; , a motor fixed to the motor base and having an output shaft non-rotatably but slidably connected to the threaded rod by a coupling ring having a sliding key; and a motor fixed to the motor base. Device.