JPH0355196A - Slitter for folding unit of roll press - Google Patents

Abstract

PURPOSE:To allow the lower member of a cutter to rotate while the circumferential speed is put easily in synchronization with the running speed of a print sheet by fixing the lower member to one end and a friction wheel to the other end, and furnishing a transmissive friction wheel to transmit the rotation of a tension roller to the friction wheel while in contact with the friction wheel, tension roller, and a rotary shaft supported rotatably at one side of a support. CONSTITUTION:The circumferential speed of a tension roller 3 for running a print sheet, i.e., the running speed of this print sheet, is synchronized with the circumferential speed of the lower member of cutter 24 by rotating the lower member 24 through a friction wheel 26 using the tension roller 3 as a drive motive. Splash of the paper dust produced in the sheet cutting position into a workshop is prevented by collecting the dust into a dust collecting device.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a slitter device in a folding machine of a rotary printing press.

[Conventional technology]

As a slitter device for a folding machine of a rotary printing press, for example, a device disclosed in Japanese Utility Model Publication No. 63/2317 is known.

In such a slitter device, when cutting printing paper, the upper blade is brought close to the lower blade in a direction perpendicular to the end surface of the lower blade, so the upper blade can be moved as needed without interference between the lower and upper blades. It is possible to position the paper to the position shown in FIG.

[Problem to be solved by the invention]

However, when cutting the printed paper, the lower blade and the rubber roller hold down the printed paper, so the circumferential speed of the rotatably driven lower blade must be synchronized with the running speed of the printed paper, making the control complicated. Additionally, paper dust generated when printing paper is cut scatters and floats in the workplace, degrading the working environment.

In view of the above circumstances, an object of the present invention is to provide a rotary printing machine that has a simple configuration, rotates a lower blade so that the circumferential speed is synchronized with the running speed of printing paper, and further prevents paper powder from scattering. The present invention provides a slitter device for a folding machine of a machine.

[Means to solve the problem]

In order to achieve the above object, the present invention includes two sets of guide members disposed across the running path of the printing paper, at least one pair of support members movably supported by each guide member, and at one end thereof. A lower blade has a friction wheel fixed to the other end, a rotating shaft rotatably supported by one of the supporting members, a lever rotatably supported by the rotating shaft, and a lever rotatably supported by the lever. ＼ and a transmission friction wheel which contacts the friction wheel and revolves around the friction wheel, and which contacts the tension roller and the friction wheel and transmits the rotation of the tension roller to the friction wheel; A rotary shaft rotatably supported on the other side of the support member was provided.

Further, each of the upper blade and the lower blade was provided with an opening from which a part of the blade protruded at a position facing the printing paper, and a cover connected to the dust collector.

[For production]

Then, by using the tension roller that runs the printing paper as a drive source and rotating the lower blade via a friction wheel, the peripheral speed of the tension roller, that is, the running speed of the printing paper and the peripheral speed of the lower blade are synchronized.

Furthermore, by collecting paper dust generated at the cutting position of the printed paper in a dust collector, it is possible to prevent the paper dust from scattering into the workplace.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 to 6.

is the folding machine frame of a rotary printing press. 3 is a tension roller;
It is rotatably supported by the frame 2 and driven by a drive means (not shown). A beam 4 is fixed between the frames 2. Guides 5a and 5b are each fixed to the beam 4 via a bracket 6. Sliders 7a, 7b, and 7c are movably supported by the guide 5a via C-shaped pushers 8, respectively. Sliders 9a, 9b, and 9c are movably supported by the guide 5b via pushers 8, respectively. Nuts 10 are fixed to sliders 7a, 7b, 7c, 9a, 9b, and 9C, respectively. l 1 a, 1 l b, 1 2
a, 12b, l3a, and 13b are feed screws, each of which is rotatably supported by the frame 2;
It is screwed into a nut 10. Gears 14a and 15a are fixed to one end of feed screws lla and llb, respectively. 16a is a motor, and 18a is a gear which is fixed to the frame 2 via a bracket 17. The sliders 7a and 9a move simultaneously in the same direction by the operation of the motor 16a so as to mesh with the gears 14a and 15a. In addition, the feed screws 12a, 12b and the feed screw 13a
, 13b are also driven with a similar configuration, and the sliders 7b, 9b
, 7c, and 9C.

In FIGS. 1 to 3, 20 is a housing fixed to the slider 7a. Reference numeral 21 denotes a rotating shaft, which is rotatably supported by the housing 20 via a bearing 22. A flange 23 is fixed to one end of the rotating shaft 21. A lower blade 24 is attached to the flange 23 and is fixed to the flange 23 together with a clamper 25 having the same diameter. A friction wheel 26 is fixed to the other end of the rotating shaft 21.

A lever 27 is rotatably supported by the housing 20. Reference numeral 28 denotes an eccentric shaft, which is rotatably supported in a groove 27a of the lever 27. 29 is a transmission friction wheel, which is rotatably supported by the eccentric shaft 28.

30 is a spring, and 32 is a cylinder that connects the lever 27 and the eccentric shaft 28 to the slider 7a and the lever 2 via a bottle 33.
7, respectively, and are rotatably coupled to each other. A stopper 34 is screwed into a screw hole formed in the slider 7a.

A cover 35 is fixed to the slider 7a so as to cover the lower blade 24. The surface of the cover 35 facing the printing paper l is open so that a portion of the lower blade 24 protrudes. 3
6 is a pipe that connects the dust collector (not shown) and the cover.

In FIG. 1 and FIGS. 3 to 5, reference numeral 40 denotes a base fixed to the slider 9a.

Reference numeral 41 denotes a shaft, which is erected on the base 40. Reference numeral 42 denotes a hollow rotating shaft, which is rotatably supported by the shaft 41 via a bearing 43.

A base 44 is fixed to the rotating shaft 42.

A slider 45 is movably supported by the base 44. 46 is a screw fixed to the slider 45.

Reference numeral 47 denotes a nut, which is screwed onto the screw 46, a part of which penetrates the groove of the base 44 so that it can be rotatably fitted, and whose tip is screwed into a screw 6 formed on the base 44. .

Therefore, by loosening the bolt 48 and turning the nut 47, the slider 45 can be moved.

50 is a bracket in which a slot is formed, and a slider 45
is fixed. 51 is the housing and bracket 50
movably supported. 52 is a screw fixed to the bracket 50.

A nut 53 is screwed onto the screw 52, and a portion of its outer periphery is rotatably fitted into a groove in the housing 5l. 5
4 is a bolt, and the bracket 5 is attached so as to open and close the slotted part.
It is attached to 0. Therefore, by loosening the bolt 54 and turning the nut 53, the housing 51 can be moved in its axial direction.

55 is a rotating shaft, which is connected to the housing 5 through a bearing 56.
1 is rotatably supported. A flange 57 is fixed to the rotating shaft 55. 58 is the upper blade, flange 5
It is fixed at 7.

0 and rotary shaft 42, respectively.

A dog 61 is fixed to the rotating shaft 42. A stopper 62 is supported by the base 40 via a bracket 63 so as to face the dog 61.

65 is a cover, and the housing 5l covers the upper blade 58.
is fixed. The surface of the cover 65 facing the printing paper l is open so that a portion of the upper blade 58 protrudes.

66 is a pipe that connects the dust collector (not shown) and the cover.

In the above configuration, the motor 16a is operated to move the sliders 7a, 9a to predetermined positions.

Similarly, the sliders 7b, 7c, 9b, and 9c are also moved to their respective required positions.

Loosen the bolt 48 and turn the nut 47 to remove the slider 45.
is moved in a direction perpendicular to the axis of the upper blade 58 to adjust the amount of engagement between the lower blade 24 and the upper blade 58, and then the bolt 48 is tightened to fix the slider 45 to the base 40.

and move the housing 51 to the upper blade 58 in the axial direction,
After adjusting the clearance when the lower blade 24 and the upper blade 58 are engaged, the bolt 54 is tightened to fix the housing 51 to the slider 45.

The actuation of the cylinder 59 rotates the rotating shaft 42 and rotates the upper blade 58 to the position shown by the dashed line in FIG. 3.

In this state, the printing paper 1 is threaded from the lower tension roller 3 in FIG. 1, through the gap between the slider 7a and the slider 9a, and over the upper tension roller 3.

Then, while the tension roller 3 is rotated and the printing paper 1 is running, the cylinder 59 is operated, the rotating shaft 42 is rotated, the lower blade 24 and the upper blade 58 are engaged, and the leading edge of the printing paper 1 is cut. do. Then, when the printing paper 1 is cut to a predetermined length and ribbons la, lb', lc, and ld of the required length are formed, each ribbon la, lb, lc, and ld is placed on a predetermined path. . At the same time, actuate the cylinder 32,
Rotate the lever 27 to bring the transmission friction wheel 29 into contact with the tension roller 3, transmit the rotation of the tension roller 3 to the lower blade 24 via the friction wheel 26, and rotate the lower blade 24 at the same circumferential speed as the tension roller 3. let

Further, the dust collector is activated to suck paper dust generated from the cut portion of the printing paper 1 and collect it in the dust collector.

As described above, by rotating the lower blade 24 via the transmission friction roller 29 and the friction wheel 29, the lower blade 24 can be rotated at the same circumferential speed as the tension roller 3 without any special control. Further, by collecting paper dust with a dust collector, it is possible to prevent paper dust from scattering.

〔Effect of the invention〕

As described above, according to the present invention, the lower blade can be rotated in synchronization with the tension roller with a simple configuration.

In addition, it is possible to prevent paper powder from scattering during cutting.

[Brief explanation of drawings]

FIG. 1 is a front view of a slitter device according to the present invention, FIG. 2 is a sectional view taken along line nn in FIG. 1, and FIG. 3 is a sectional view taken along line mm in FIG.
The arrow view, FIG. 4 is the IV-4' sectional view of FIG.
The figure is a sectional view taken along the line V-V in FIG. 1, and FIG. 6 is a plan view of the slitter device. 1: Printing paper, la, lb, lc, ld: ribbon, 3: tension roller, 5a, 5b: guide, 7a, 7b, 7c:
Slider, 9a, 9b, 9c: Slider, 2l: Rotating shaft, 24: Lower blade, 26: Friction wheel, 27: Lever 29: Transmission friction wheel, 3
5: Cover 55: Rotating shaft, 58: Upper blade, 65 Cover JP-A-3 55196 (6)

Claims (1)

[Scope of Claims] 1. A folding machine for a rotary printing machine in which a disc-shaped upper blade and a lower blade cut printing paper running under tension by a tension roller in its width direction to form a plurality of ribbons. A slitter device in a machine includes two sets of guide members disposed across a running path of printing paper, at least one pair of support members movably supported by each guide member, a lower blade at one end, and a lower blade at the other end. A friction wheel is fixed, a rotating shaft rotatably supported by one of the supporting members, a lever rotatably supported by the rotating shaft, and a lever rotatably supported by the lever and rotatably supported by the friction wheel. A transmission friction wheel that contacts the tension roller and revolves around this friction wheel, contacts the tension roller and the friction wheel, and transmits the rotation of the tension roller to the friction wheel; A slitter device in a folding machine of a rotary printing press, characterized in that it is provided with a supported rotating shaft. 2. The scope of claims characterized in that each of the upper blade and the lower blade is provided with an opening from which a part of the blade protrudes at a position facing the printing paper, and a cover connected to a dust collector. A slitter device in a folding machine of a rotary printing press according to item 1.