JP2860146B2 - Paper jam recovery device for folder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a folding paper jam recovery device attached to a web-fed rotary printing press, and to a technique for automatically performing recovery after web cutting.

<Prior Art> A folding press is generally attached to a web-fed rotary printing press (hereinafter, simply referred to as a printing press). In addition to a former (triangular plate) that folds the printed web in half (vertical fold) in the width direction, the folded web is passed through guide rollers, nip rollers, etc., and then cut horizontally to buckle folds. And a cutting cylinder to be supplied to the knife folding section.

By the way, in a printing press, a web may cause paper jam for some reason. If the operation of the machine is continued in this state, the web will be slack at the entrance of the folding machine, and excessive force will be generated inside the folding machine.
An unexpected failure is induced. Therefore, conventionally, there has been proposed a technique in which a web cutting device is provided between a former and a cutting cylinder, and the web is promptly cut when a paper jam occurs. Japanese Patent Application Laid-Open No. 63-1717 discloses a web cutting device.
No. 72 has a good effect.

This web cutting device is provided between a nip roller and a group of origami cylinders (cutting cylinder, folding cylinder, etc.), and has a cutting blade (saw blade).
And an actuator (air cylinder) as basic constituent members. The state of paper jam is detected by an electrical detection device, and at the same time as the operation of the printing press is stopped, the cutting blade is moved by the operation of the actuator, and the web is cut and discharged outside the machine. Since the plate cylinder and blanket cylinder constituting the printing unit have a large weight, that is, an inertial mass, it is difficult to stop suddenly, and the web discharge amount is several tens of meters.

<Problems to be Solved by the Invention> The conventional web cutting device described above has the following problems.

After being cut by the web cutting device, the web discharged outside the machine has a length of several tens of meters as described above, and the upper end thereof is in a state of being sandwiched by nip rollers. Therefore, when printing is resumed thereafter, a method has been adopted in which the web is cut manually near the lower portion of the nip roller using a cutter or the like, and then the web is fed into a cutting cylinder. For this reason, there is a risk that the operation will be delayed due to an increase in the stop time of the machine, and that the operator will be injured by approaching the cutting blade or each roller.

The present invention has been made in view of the above circumstances, and has as its object to provide a paper jam recovery device that can automatically feed a web to a cutting cylinder after printing is resumed.

<Means for Solving the Problems> In order to solve this problem, the present invention has a plurality of nip rollers provided between a former for vertical folding and a cutting cylinder for horizontal cutting, which is attached to a rotary printing press. A folding machine paper jam recovery device provided in a folding machine, comprising: a first web cutting device provided downstream of an arbitrary nip roller; a second web cutting device provided upstream of the arbitrary nip roller; And the driving of the first web cutting device is cut off to cut the running web,
Further, the present invention proposes a paper jam recovery device for folding machines, further comprising drive control means for controlling the drive of the second web cutting device after a predetermined time has elapsed to cut the stopped web.

<Operation> When a paper jam occurs, first, the running web is cut by the first web cutting device on the downstream side of the downstream nip roller, and the web from the upstream side is discharged outside the machine. After the running of the web is stopped, the web is cut again by the second web cutting device above the nip roller on the downstream side. Then, when printing is resumed, unnecessary webs on the downstream side of the second web cutting device are discharged by nip rollers on the downstream side, and webs on the upstream side are supplied to the cutting cylinder by the respective nip rollers.

<Example> An example of the present invention will be specifically described with reference to the drawings.

FIG. 1 is a side view showing a main part of an embodiment of a folding machine having a paper jam recovery device according to the present invention, which is attached to a printing press. FIG. 2 shows an enlarged view of a portion A in FIG. 1, FIG. 3 shows a view taken along a line BB in FIG. 2, FIG. 4 shows a piping diagram, and FIG. 4 shows an operation time chart of the paper jam recovery device.

In FIG. 1, reference numeral 1 denotes a former for half-folding the printed web 2 in the width direction, and is supported by a former frame 5 attached to an upper portion of a frame 4 of the folder 3. Web 2 half-folded vertically by former 1
Is sent to the folder 3 and first passes through the lead roller 6 and the upper nip roller 7. Next, horizontal perforations are formed on the web 2 at predetermined intervals by a horizontal sewing cylinder 8, and pressure is applied by a lower nip roller 9. The web 2 that has passed through the lower nip roller 9 is cut by a cutting cylinder 10,
Is folded in half in the horizontal direction. The web 2 that has been cut into signatures is conveyed to the chopper folding section or the like by the holding cylinder 12 and the delivery cylinder 13, but the description thereof is omitted.

First web cutting machine in paper jam recovery device of the present embodiment
14 is provided between the lower nip roller 9 and the cutting cylinder 10. As shown in FIGS. 2 and 3, the first web cutting machine 14 includes air cylinders 15 fixed to the left and right frames 4,
A cutting block 18 connected to a rod 16 of an air cylinder 15 via a bracket 17 and a cutting blade (saw blade) 19 bolted to the cutting block 18 are main components. Air tubes 20 and 21 for supplying working air from a drive control device (not shown) are provided at front and rear ends of the air cylinder 15, respectively.
Connected via 2,23. When air is supplied to the nipple 23 behind the air cylinder 15, the cutting block 18 moves forward, and when air is supplied to the front nipple 22, it moves backward.

A cutting blade cover 24 is located on the upper surface of the cutting blade 19,
A plurality of inclined convex pieces 25 are formed at the rear part. The inclined convex piece 25 prevents the web 2 from being caught in the lower nip roller 9. Since the lower nip roller 9 of this embodiment is of a split roller type,
Does not interfere with 25. In the drawing, reference numeral 26 denotes a web guide for guiding the web 2 between the horizontal sewing machine cylinder 8 and the lower nip roller 9, and reference numerals 27 and 28 denote air cylinders for driving the upper nip roller 7 and the lower nip roller 9, respectively.

In the figure, reference numeral 29 denotes an openable inspection cover that covers the cutting cylinder 10, and the cut web 2 is guided along the upper surface thereof. A pneumatic vane type rotary actuator 31 is connected to the rotation shaft 30 of the inspection cover 29, and the air tube 3
Inspection cover 29
Swings and opens and closes. In the figure, reference numeral 34 denotes a stopper lever integrated with the rotating shaft 30, which restricts the rotation range of the inspection cover 29 by contacting stopper pins 35 and 36 formed on the frame 4. Further, the frame 4 is provided with a limit switch 37, and the open / closed state of the inspection cover 29 is detected. In the drawing, reference numeral 38 denotes a proximity switch attached to the frame 4, and reference numeral 39 denotes a stopper of the cutting blade block 18. The proximity switch 38 detects whether or not the stopper 39 is engaged, and the first web cutting device
Signals when 14 is ready.

On the other hand, the second web cutting machine 40 of the present embodiment is
And the lower nip roller 9. The structure of the second web cutting machine 40 is substantially the same as that of the above-described first web cutting machine 14, and includes an air cylinder 41 and a cutting blade 42, but does not include a cutting blade cover or the like. The web guide 26 has a notch 26a through which the cutting blade 41 of the second web cutting machine 40 passes.

The pneumatic circuit of the first web cutting machine 14 is as shown in FIG. First, air from an air pressure source 43 such as an accumulator is supplied to an air control unit 47 including an air filter 44, a pressure regulator 45, a lubricator 46, and the like.
to go into. In the figure, reference numeral 48 denotes a pressure gauge for detecting the air pressure regulated by the pressure regulator 45. Next, the air from the air control unit 47 passes through the electromagnetic control valve 49, and further passes through one of the air tubes 20, 21.
The air is supplied to one of the front and rear nipples 22 and 23 of the air cylinder 15. As shown in the figure, air is exhausted from the air tube to which air is not supplied. In addition, the inspection cover
29 rotary actuators 31 and second web cutting machine 40
These air cylinders 41 are also driven by a similar pneumatic circuit, and therefore will not be described in detail. In FIG. 1,
50 is a web storage box for storing the cut web 2.

Hereinafter, the operation of the present invention will be described with reference to the time chart of FIG.

In the folding machine 3 of the present embodiment, when the web 2 is jammed in the printing section or the like, an output signal is issued from a jam jam detecting device (not shown) to a drive control device (not shown) of the jam recovery device, and the drive is performed. Control is started.

The drive controller first outputs a machine stop signal and a first web cutting device operation command signal, and starts counting by a first timer (not shown). When the power is stopped by the machine stop signal, the speed of the machine (printing machine) gradually decreases as shown in the figure, and stops completely after a predetermined time has elapsed. In addition, a nipple 23 at the rear of the air cylinder 15 of the first web cutting device 14 is issued by a first web cutting device operation command signal.
Is supplied with air, and exhaust is performed from the front nipple 22. As a result, as shown in FIGS.
When the web 16 is extended, the cutting blade 10 advances together with the cutting block 18 and the web 2 is cut. Then, the cut web 2 is discharged toward the discharge web storage box 50 as shown in FIG.

The first timer issues an OFF signal after about 1 to 2 seconds have elapsed after the machine operation has stopped (the ON signal is released), whereby the first web cutting device operation command signal is also turned OFF, and the cutting blade 19 is automatically turned off. It will be in standby state. First web cutting device
The reason why the 14 is protruded until after the operation of the machine is stopped is to prevent the web 2 from entering the inside of the lower cutting cylinder 10 or folding cylinder 11 by the cutting blade 19. At this point web 2
Is stopped, but the upper end is sandwiched by the upper and lower nip rollers 7, 9.

Next, when the operator presses a reset button (not shown), a reset command signal is output from the drive control device, and at the same time, a second timer (not shown) starts counting. When the reset command signal is output, the second web cutting device operation command signal is output, the air cylinder 41 of the second web cutting device 40 is operated, and the web 2 is cut again by the cutting blade 42. At this time, the web 2 is connected to both nip rollers 7, 8
Since the tension is given between them, the cutting is performed well. The second web cutting device operation command signal is turned on by an OFF signal due to the countdown of the relatively short second timer.
The state becomes the FF state, and the cutting blade 42 automatically enters the standby state.

Next, when the operator presses a reset release button (not shown), the reset command signal is released.

Next, when the operator presses a slow movement button (not shown), a mechanical slow movement command signal is output from the drive control device, and the counting of the third timer and the fourth timer is started. In response to the machine slowing command signal, the machine operates slowly for an arbitrary time, and the cut lower web 2 is discharged by the lower nip roller 9 and at the same time, the upper web 2 is sent from the upper nip roller 8 to the lower nip roller. .
At this time, the machine may be moved slightly instead of slowly.

The third timer is set to the time required for the last end of the web 2 cut by the second web cutting device 40 to pass through the lower nip roller 9. Then, when the countdown ends, an inspection cover operation command signal is output, and the inspection cover 29 is flipped up by operating the rotary actuator 31. As a result, the cut web 2 is dropped into the web storage box 50 and does not hinder the transport of the web 2 above.

The fourth timer is set larger than the third timer, and when the countdown ends, the inspection cover operation command signal is released. Then, the rotary actuator 31 operates again to return the inspection cover 29 to the original position, and the operator can resume the normal operation (printing).

In the apparatus of the present embodiment, since the recovery operation at the time of paper jam is semi-automatically performed, the time required for the recovery operation is reduced and the safety of the operator is improved.

This concludes the description of specific embodiments, but embodiments of the present invention are not limited to these embodiments. For example, as shown in FIG. 6, the present invention may be applied to a device having a third nip roller 51 provided on the upper portion of a cutting cylinder 10. Further, in the above embodiment, the second web cutting device 14 is provided between the horizontal sewing machine cylinder 8 and the lower nip roller 9, but may be provided between the upper nip roller 7 and the horizontal sewing machine cylinder 8. The drive source of each device may be hydraulic or electric. Furthermore,
The above-described embodiment is a semi-automatic type which is activated by an operator pressing a button except when a paper jam occurs, but may be a fully automatic type in which a reset command, a slow motion command and the like are all performed by a drive control device. Furthermore, in the above embodiment, the inspection cover 29 is flipped up and the cut web 2 is discharged.
This may be abolished, or another means (such as suction by vacuum or feeding by an electric motor) may be provided.

<Effect of the Invention> According to the paper jam recovery device of the folding machine according to the present invention, two web cutting devices are provided to cut and discharge the web at two stages of running and stopping after paper jam. Since the operation is performed, the time required for the recovery operation is significantly reduced, and the safety during the operation is improved.

[Brief description of the drawings]

FIG. 1 is a side view showing a main part of an embodiment of a folding machine having a paper jam recovery device according to the present invention. FIG. 2 is A in FIG.
FIG. 3 is an enlarged view of a portion, and FIG. 3 is a view taken along the arrow BB in FIG. FIG. 4 is a piping diagram, and FIG. 5 is an operation time chart of the paper jam recovery device. FIG. 6 is a side view showing a main part of another embodiment of the present invention. In the drawing, 1 is a former, 2 is a web, 3 is a folding machine, 4 is a frame, 7 is an upper nip roller, 8 is a horizontal sewing machine cylinder, 9 is a lower nip roller, 10 is a cutting cylinder, 14 is a first web cutting device,
15 is an air cylinder, 19 is a cutting blade, 29 is an inspection cover, 31 is a rotary actuator, 40 is a second web cutting device,
41 is an air cylinder, 42 is a cutting blade, 47 is an air control unit, 49 is an electromagnetic control valve, 50 is a web storage box, and 51 is a third nip roller.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B41F 13/54-13/56 B41F 13/60 B65H 26/02 B65H 45/00-45/30

Claims (1)

(57) [Claims] An apparatus for restoring a paper jam of a folding machine which is attached to a rotary printing press and is provided in a folding machine having a plurality of nip rollers between a former for vertical folding and a cutting cylinder for horizontal cutting, comprising: A first web cutting device provided downstream of the nip roller, a second web cutting device provided upstream of any given nip roller, and stopping the operation of the machine at the time of paper jam and controlling the drive of the first web cutting device Drive control means for driving the second web cutting device to cut the web after stopping by cutting the running web, and after a lapse of a predetermined time, the paper jam recovery device for a folding machine. .