JP2774302B2 - Akium roll device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an accumulating roll device used for a rotary printing press or the like.

[Conventional technology]

In a rotary printing press, in order to supply and take up a film without stopping the printing press, for example, Japanese Patent Laid-Open No.
-89547, JP-A-58-89548, JP-A-62-28
There is provided an accumulator as disclosed in Japanese Patent No. 5855 and the like.

These accumulators have the ability to store about 100 m of film between the moving and stationary rolls. Then, while the film is stored between the moving roll and the fixed roll, or while storing the film between the moving roll and the fixed roll, the film traveling path is adjusted so that the film is supplied and wound. I do.

[Problems to be solved by the invention]

In such an accumulating roll device, if there is an error in the parallelism between the moving roll and the fixed roll, the running path of the film is bent, and particularly, when the moving roll is rising, the running path becomes longer. Since the bending of the film is enlarged, the film may come off from the roll, and the film may be wrinkled or may not be able to be wound by the rewinding device.

Also, even if the moving roll and the fixed roll are arranged in parallel, during the movement of the moving roll, the rotation speed of the moving roll changes in accordance with the moving speed, so when the friction between the moving roll and the film is small, Alternatively, when air enters between the moving roll and the film, the running direction of the film may bend.

SUMMARY OF THE INVENTION An object of the present invention is to provide an accumulative roll device that eliminates the bending of a film in the device in view of the above circumstances.

[Means for solving the problem]

In order to achieve the above object, in the present invention, in an accumulation roll device each including a plurality of stages of moving rolls and fixed rolls, in correspondence with a remarkable film outlet, the film is wound around the traveling path. A pair of rolls arranged at predetermined intervals so as to regulate, a driving unit for rotating these rolls with reference to the center in the longitudinal direction of the entering roll, and a detecting unit for detecting an end of the film And control means for controlling the drive means based on the output of the detection means.

[Action]

Then, while the moving roll is moving, the end of the film is detected by the detecting means, and when the end of the film is deviated by more than an allowable value, the driving means rotates the roll by a command of the control means, Fix the bend.

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 and 2.

In FIG. 1, reference numeral 1 denotes an accumulation roll device which sends out a film 3 sent from a feed device 2 to an out-feed device 4. Reference numeral 5 denotes a rewinder, which winds up the film 3 sent from the outfeed unit 4.

Reference numeral 6 denotes a feed roller, which is rotatably supported by the feed device 2 and is driven to rotate by driving means (not shown). A guide roller 7 is rotatably supported by the feeder 2.

A feed roller 8 is rotatably supported by the outfeed device 4 and is driven to rotate by driving means (not shown). Reference numeral 9 denotes a pinch roller which is swingably supported by the outfeed device 4 and is swung by a driving means (not shown) to feed the film 3. 10 is a guide roller,
It is rotatably supported by the outfeed device 4.

11 is a filer of the rewinder device 5. A spider arm 12 is rotatably supported by the frame 11 and is intermittently rotated by a driving unit (not shown). Reference numeral 13 denotes a wound film, which is supported by the spider arm 12. 14
Is a core and is supported by the spider arm 12. A guide roller 15 is a bracket (not shown), which is rotatably supported by the spider arm 12.

16 is a frame of the accumulating roll device 1. 17, 18, 19
Are fixed rolls, which are rotatably arranged on the frame 16 in the order of one stage, two stages, and three stages from the top. Reference numeral 20 denotes a moving frame, which is movably disposed along a guide 21 fixed to the frame 16, and is moved up and down by driving means (not shown). Reference numerals 22, 23, and 24 denote moving rolls, which are rotatably supported by the moving frame 20 in the order of one step, two steps, and three steps from the top.

Reference numerals 25, 26, and 27 denote straightening devices, respectively, between the outlet of the moving roll 22 and the inlet of the fixed roll 18,
And between the outlet of the fixed roll 19 and the guide roller 10 of the outfeed device 4.

The correction device 25 (26, 27) has a configuration as shown in FIG. In FIG. 1, reference numeral 30 denotes a guide roller, which is rotatably disposed. 31 is the frame, the fixing legs
It has 32. Reference numeral 33 denotes a roll, which is rotatably supported at predetermined intervals on a base 35 via a bearing. The base 35 is provided on the frame 31 with a roll on the entrance side of the film 3.
It is rotatably supported about a longitudinal center point C of 33, and is rotated by a cylinder (not shown). 36 is an oil tank. A motor 37 is fixed on the oil tank 36 and drives a pump disposed in the oil tank 36 to operate the cylinder. Numeral 38 denotes a detecting means, which comprises, for example, a light emitter and a light receiver opposed to each other with the film 3 interposed therebetween, and detects the position of the end of the film 3 based on the output of the light receiver. 39 is a control means,
Based on the output of the detecting means 38, the operation and stop of the motor 37 are controlled, and the flow of oil sent to the cylinder is changed by switching the solenoid valve attached to the oil tank 36.

In such a configuration, when the film 3 is bent by the movement of the moving frame 20 of the accumulation roll device 1, the amount of the bend is determined by the detecting means of each of the correction devices 25, 26, and 27.
Detected at 38. Then, when the amount of bending of the film 3 detected by the detecting means 38 becomes larger than a preset amount, the control means 39 gives a command to the motor 37 and the solenoid valve,
The roller 33 is rotated in a required direction. For example, in FIG. 2, when the film 3 approaches the detection means 38, the roll 33 is rotated in the direction of arrow A about the center point C. Then, the traveling speed of the film 3 on the detecting means 38 side increases, and the film 3 moves toward the opposite side.

In this way, by correcting the curvature of the film 3 at the exit of each stage of the accumulating roll device 1, the curvature of the film 3 is not enlarged. Therefore, the film 3 sent to the rewinder device 5 through the outfeed device 4 can be reliably wound by the rewinder device 5.

[Effects of the Invention] As described above, according to the present invention, since the straightening device for correcting the film bending is provided in the accumulation roll device, the film bending in the accumulation roll device can be eliminated. Further, it is possible to prevent the film from being wrinkled due to bending in the accumulator. Further, there is an effect that the winding accuracy in the rewinder device can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of the accumulating roll device of the present invention, and FIG. 2 is a perspective view of the straightening device in FIG. 1: Accumulation roll device, 3: Film, 17, 18, 19: Fixed roll, 22, 23, 24: Moving roll, 25, 26, 27: Straightening device, 33: Roll, 37: Motor, 38: Detection means, 39: Control means.

Claims (1)

(57) [Claims] An accumulative roll apparatus comprising a plurality of moving rolls and a fixed roll, each of which moves a moving roll to change a running distance of a film wound between the rolls. Corresponding to the exit, a pair of rolls arranged at a predetermined interval so as to wind the film and regulate the traveling path, and these rolls are referred to the center in the longitudinal direction of the entrance roll. An accumulative roll provided with a straightening device including a driving unit for rotating, a detecting unit for detecting an end of the film, and a control unit for controlling the driving unit based on an output of the detecting unit. apparatus.