JPS5878763A - Adjusting device for phase of rotary sheet-printing machine with inversion mechanism - Google Patents

Abstract

PURPOSE:To adjust the phase of an inversion cylinder with an impression cylinder by an easy operation from one place, by rotating simultaneously all worm wheels by the rotation of worms, and thereby performing the pressure engagement of a fixing gear with an adjusting gear and the disengagement of the former from the latter. CONSTITUTION:When an operating shaft 19 is rotated by a spanner after the fixation of two gears 12 and 14 by a fixing mechanism is released, four worm wheels are made to slip out of the screw part of a pin through the intermediary of bevel gears 22 and 23 and worms 24 and 25, and thereby the pressure engagement of a fixing gear 12 with an adjusting gear 14 is releaed. When a handle 40 is rotated after the fixing gear 12 is fixed on the frame side, the adjusting gear 14 is rotated due to the engagement of a pinion 38 with a gear 39 and the engagement of a small gear 36 with the adjusting gear 14, and thereby the phase of the fixing gear 12 with the adjusting gear 14 is adjusted. On the occasion of this adjustment, a pointer is matched with a dial plate for positioning these gears, since the position of the end of paper varies according to the size of the paper.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device that is equipped with a paper reversing mechanism for double-sided printing and adjusts the phase between cylinders for delivering paper in a nine-fed rotary printing press.

In recent years, with the diversification of printing, a sheet-fed rotary printing press with a reversing mechanism that can be used for single-sided printing and double-sided printing has been developed and put into practical use. 1 and 2 are side views of the vicinity of the reversing cylinder to explain the paper transfer operation during single-sided printing and double-sided printing with this type of printing machine, and FIG. The figure shows the case of double-sided printing. To explain this based on the figure, a reversing cylinder 2 is provided downstream of the impression cylinder 1 of the first printing unit, and an impression cylinder 3 of the second printing unit is provided downstream of the reversing cylinder 2. It is provided. The printed paper 5 is transferred between the impression cylinder 1 and the blanket cylinder 4 of the first printing unit into the reversing cylinder 2 by the grip of the claw.
After that, it is sent between the impression cylinder 3 and the blanket cylinder 6 of the printing unit s2, and the next printing is performed. Therefore, when comparing single-sided printing and double-sided printing, first of all, on the single-sided side shown in FIG. The reversing cylinder 2 rotates 180 degrees, and is then gripped by the pawl 7 of the impression cylinder 3 for the next printing. In this case, the paper wrapped around the impression cylinder 3 Similarly, since the surface 5a of No. 5 is exposed upward, one side is used. On the other hand, in the case of double-sided printing shown in FIG. When the trailing edge of the paper reaches the point of contact between both 1i41 and 2, the trailing edge of the paper is picked up by the reversing claw 8. At this time, the first claw 1 opens and releases the paper 5, so as the reversing cylinder 2 rotates, the paper 5 is reversed from front to back and is in good condition under pressure a.
When M3 is reached, the front surface 5a becomes a knife and is wrapped around pressure #3 by changing the grip of the nail, and the back side 11i5bK is printed, resulting in double-sided printing. In this case, unlike the single-sided case, the reversing claw 8 enters the paper 5 from the tail side, grips it, and releases the revolving paper 5 between the reversing cylinder 2 and -. The opening/closing cam of the reversing pawl 8 is provided with five forces for reversing the pawl so that the reversing pawl 8 rotates by 'N180'' during its revolution.

In the printing cylinder device with a reversing mechanism produced in this manner, as is clear from a comparison of FIG. 1 and FIG. but,
In FIG. 2, the phase is shifted by the winding angle θ of the paper 50. Therefore, when switching from single-sided to double-sided printing or from double-sided printing to single-sided printing, the rope group downstream of this including reversal-2 and the pj4 upstream of this including pressure @1
It is necessary to shift the phase of the group by nine angles θ corresponding to the size of the zigzag 5. This phase g4m must also be used for the nine-way meeting where the paper size changes during the double-sided play.

Conventionally, the following devices have been generally used as this phase al1411M position. In other words, the gear on the reversing cylinder 2 that meshes with the gear on the pressure arill to transmit rotation is 21f.
They are arranged adjacent to each other, one gear is phantomly fixed to the reversing steel shaft, and the other gear is freely rotatably mounted to the reversing shaft. During operation, the gear 2111 is fixed to transmit the rotation of pressure @1@, and for phase adjustment, the two gears are fixed and released, and the gear on the loose side is set together with the group on the pressure-1 side. After rotating and positioning, the 2+1 gear is fixed to transmit the rotation.

However, conventional phase! 111!1 device is
The gears are fixed with 4 to 6 III bolts and a restraining plate, and each time the imA ridge is loosened or tightened individually with a torque wrench, the gears are released and fixed. Therefore, in order to avoid becoming one-handed, l +
Not only does it take a long time to tighten all the bolts, but you have to repeatedly tighten all the bolts a little at a time, such as tightening one bolt a little and then tightening the next bolt a little. The disadvantages are that it requires a large space for adjustment and is extremely difficult to operate.

The present invention was developed in view of the above points, and includes a lower IL@
A fixed gear t that meshes with a gear on the upstream printing cylinder is fixed, and its stepped portion meshes with a gear on the upstream printing cylinder. JI11
The gear is loosely mounted, and the shaft is mounted in the diametrical direction near the outer end surface of the fixed gear, and is rotatably supported by a pair of worms on a nine-ohm shaft and a screw member on the outer surface of the fixed gear. The worm wheels of 94-1 are meshed on both sides of each worm, and by rotating the worm, all the worm wheels are rotated simultaneously, and the fixed gear and the orange gear are crimped and fixed via the screw member. By configuring the structure to connect and disconnect, the phase g* between the inversion and the upstream pressure steel can be changed to 1i! with a simple configuration. The present invention provides the phase and position of a sheet-fed rotary printing press with a reversing mechanism that can be easily operated in a short time using a 1PfT cam. Embodiments of the present invention will be described in detail below with reference to the drawings.

3 to 711 show an embodiment of the phase adjustment device according to the present invention, FIG. 3 is a sectional view thereof, FIG. 4 is a front view from A of FIG. #s3, and FIG. 6 is a sectional view taken along CO of FIG. 4, and FIG. 7 is a sectional view of the phase 11* operating section. The line around the reversing cylinder and the reversing operation of the paper will be explained with reference to FIGS. 1 and 2. In these figures, the left and right frames 1 of each adjacent printing unit
0 each have a rubber l1lli4 as a printing cylinder,
6 and impression cylinders 1 and 3 with a double diameter are supported pivotally with their surfaces facing each other, and between both pressure cylinders 41.3, an inversion cylinder 2 with a double diameter is mounted around each impression cylinder 1 and The inverting cylinder 2 is rotatably supported between both impression cylinders 1 and 3 by a frame 10 with its surfaces facing each other. In the notches on the outer periphery of the impression cylinders 1 and 3, a l1li14R cam follower is placed in contact with a pawl opening/closing cam fixed to the frame side at the end of the cylinder shaft, and the cylinders 1 and 3 are rotated to open and close at a predetermined timing. A plurality of claws 7 and 9 are provided, respectively.

In addition, in the outer peripheral notch of the reversing cylinder 2, there is also a claw opening/closing cam for single-sided printing or a claw opening/closing/reversing cam for double-sided printing, which is also fixed to the frame side at the end of the cylinder shaft. A plurality of reversing claws 8 are provided that open, close, and reverse by bringing the side cam followers into contact with each other.

Frame 10 on the opposite side to the drive side of the reversing claw 8 by the cam
The end shaft 11 of the reversing cylinder 2 protrudes from the downstream pressure I@
A fixed gear 12 fixed to the end of the shaft 9 and meshing with the 9 gear is fixed with a fixing bolt 13.
The nine-step portion 12m formed on the outer periphery of the upstream impression cylinder 1
An annular adjustment gear 1 fixed to the shaft end of the shaft and meshing with the nine gears.
4 is rotatably mounted. And fixed gear 12
and the adjustment gear 14 are configured so that their mutual phases can be adjusted by using the 6i1!1 position described later when switching between single-sided printing and double-sided printing. frame 10 so that it does not rotate 9
The configuration of the phase adjustment device will be described below, with a fixing mechanism (not shown) that fixes the gear to the gear 11 and a fixing mechanism (not shown) that fixes the fixed gear 12 and the adjusting gear 14 in the single-sided mode. The outer end 1i1iK of the fixed gear 12 is 31vA
O-bearings 15, 16, and 17 are installed at a location that bisects the outer part in the circumferential direction and at the shaft center. It is pivoted for free movement. Further, an operating shaft 19 having a hexagonal head is rotatably supported on the bearing 17 with b-toe 20.21 restricting movement in one direction, and this operating shaft 19 and the worm shaft 18 There are two bevel gears that mesh with each other.
2.23 are each pivoted. Furthermore, a pair of worms 24 and 25 are connected to the fixed gear 12 on the worm shaft 18.
The worm shaft 18 is mounted at symmetrical positions on both sides of the 0-axis center portion, and the worm shaft 18 is restricted from moving in the axial direction by its stepped portion and the worm 24. On the other hand, the outer peripheral portion 4 of the fixed gear 12 Bins 26, each having a hexagonal head, are slidably inserted into the appropriate positions, and are formed so as to be non-rotatable by being fixed with a knock to a restraining plate 2γ, which will be described later. 12 and the end surfaces of the IJI4m gear 14, a fan-shaped restraining plate 21 is inserted with its arc-shaped finished surface pressed against the end surfaces of both gears 12 and 14. The protruding portion from the fixed gear 12 is threaded, and each of the worms 24 is attached to the threaded portion.
゜25 and the worm foil 28 that meshes on both sides thereof
are screwed together, and by rotating the worm shaft 18, the four worm wheels 28 are rotated synchronously and the bin 2 is rotated.
The fixed gear 12 and the adjustment gear 14 are connected and disconnected through the press plate 21 as the sun advances and retreats.

Such a phase m** position is ! It is provided with an operating section which is shown as a whole by reference numeral 29 when broken away in FIG. In other words, both gears 1
Diagonally below the frame 10, a nine bearing 31 is connected and supported by four stays 30, and the pole bearing 32 of this bearing 31 and the frame 1
A small gear 34 that meshes with the adjustment gear 14 and a gear shaft 35 are integrally formed and rotatably supported on the nine-gale bearing 33 that is fitted into the nine-gale bearing 33. Also, the upper and lower stays 3
The handle shaft 36 is between the frame 1° and the bearing 31.
, and a bracket 37 fixed to a bearing 31 so as to be rotatable, and the binion 3B on the handle shaft 36 and the gear 39 on the gear shaft 35 are engaged with each other.

A handle 40 is attached to the handle shaft 36, and two ring-shaped #1I 41.42 are provided, which are biased by a spring 43 and form a click mechanism together with a nine ball 44. The movement of the pinion 38 is regulated by the meshing position and non-meshing position of the pinion 38, which are shown by solid lines and chain lines in the figure. By doing this, the binio/38 and the gear 39 are engaged and the handle 4 is rotated.
By rotating the adjustment gear 14, the adjustment gear 14 is rotated, and the phases with the fixed gear 12 are all adjusted. In addition, fixed gear 1
A pointer and a scale plate (not shown) for displaying a phase adjustment device corresponding to the size of the paper 5 are provided on the end face of the stepped portion 2 and the corresponding end face of the 54 adjustment gear 14.

The operation of the printing cylinder device and phase adjustment device configured as above will be explained. First, in the case of single-sided printing, the fixed gear 12 and the A-orange gear 14 are fixed in a predetermined phase by a fixing mechanism (not shown), and the worm wheel 28
is closed, and the adjustment gear 14 is connected to the fixed gear 12 via the restraining plate 2γ: v1[・.

It is crimped and fixed. Further, the other end side of the reversing cylinder 2 has been pulled out, and the engagement between the pinion 38 and the gear 39 has been disengaged. The handle shaft 36 is provided with a safety device such as a limit switch so that the machine will not start unless the handle shaft 36 is pulled out.

When the machine is operated in this state, as shown in FIG. The material is then wrapped around the reversing cylinder 2, and is gripped by the reversing claws 8 and 9, and then wrapped around the impression cylinder 3 with the surface 5a facing up. It is printed on one side.

Next, when switching from single-sided printing to double-sided printing, after releasing the fixation of both gears 12 and 14 by a fixing mechanism (not shown), the bevel gear 2 The four worm wheels 28 are simultaneously rotated via the . 12 and all! 1 gear 14 is released.

Therefore, after fixing the fixed gear 12 to the frame 10 side using a fixing mechanism (not shown) to prevent it from moving, the handle shaft 36 is pushed, the pinion 38 and the gear 39 are engaged, and the handle 40 is rotated. =, ty3B and gear 39
Il due to the meshing of the small gear 36 and the adjustment gear 14.
The adjustment gear 14 rotates, and the phases of the fixed gear 12 and the adjustment gear 14 are adjusted. When making this adjustment, the position of the paper tail differs depending on the size of the paper 5, and the angle θ shown in FIG.
Since the values are different, the positions are determined and adjusted by aligning the pointer with the scale plate. After positioning in this way, when the operating shaft 19 is rotated in the opposite direction, the bevel gear 2
By tightening the worm wheel 28 to the pin 26 via 2.23 and the worms 24 and 25, the holding plate 2T
Both gears 12 and 14 are crimped and fixed via the
The phase adjustment is completed by releasing the fixed gear 12 from the frame 10, moving the handle shaft 36, and disengaging the pinion 38 and gear 39.

If the machine is operated in this state, the pressure will increase to 11 due to phase adjustment.
Upstream side including M1! Group III is out of phase with respect to the cylinder group including inversion cylinder 2, and inversion 11i! Since the cam follower on the other end of 2 corresponds to the claw opening/closing/reversing cam for double-sided printing, the paper 5 printed on the surface m5a between the rubber WA4 and the impression cylinder 1 can be The paper passes past the contact point and is wrapped around the pressure 1j41 by an angle θ, and the tail end of the paper is gripped by the reversing claw 8 at this position. As the cylinder group further rotates, the paper 5 is reversed so that the front surface 5m is on the inside, and reaches the point of contact with the impression cylinder 3, where it is gripped by the claw 9 of the impression cylinder 3, so that the back side faces up and the paper 5 is pressed. Printing is performed on the back side between W743 and blanket cylinder 6, resulting in double-sided printing.

In addition, when assembling the bottle 26 and the worm foil 2
With the worms 24 and 8 rotatable, the worms 24 and 25 are engaged with the worm wheel 28 without backlash, and then the four pins 26 are evenly tightened using a torque wrench;
As is clear from the above explanation in which a knock is struck between the pin 26 and the presser metal 27, according to the present invention, in a sheet-fed rotary printing press with a reversing mechanism, there is a curvature on both adjacent printing cylinders. A fixed gear that meshes with the printing cylinder on the downstream side is fixed to the end shaft of the inverted steel that is in contact with At the same time, each worm has a worm on a worm shaft mounted in the diametrical direction close to the outer end surface of the fixed gear, and four worm wheels rotatably supported on the outer end surface of the fixed gear with screw members. By engaging on both sides of the worm wheel and rotating the worm, all the worm wheels are rotated at the same time to connect and disconnect the fixed gear and the adjustment gear by crimping through the screw member,
With a simple configuration, the phase adjustment between the reversing cylinder and the impression cylinder on the downstream side can be performed centrally at one operation, so the adjustment time is reduced by 1, and it can cope with the high speed of Isoko. In addition, each part of both gears can be crimped uniformly without using a torque wrench, making it possible to securely fix it with easy operation that does not require skill.
i! Even if all locations are crimped by operating at one location, the force is expanded and the operability is extremely easy.

[Brief explanation of the drawing]

11A and 2 are side views of the vicinity of the reversing cylinder in a sheet-fed rotary printing press with a rounding reversing mechanism, which compares and explains the paper gripping operation in single-sided printing and double-sided printing, and FIGS. 3 to 7 The figures show an embodiment of the phase adjustment device for a sheet-fed rotary printing press with a reversing mechanism according to the present invention, FIG. 3 is a sectional view thereof, FIG. BB sectional view in Figure 3,
FIG. 6 is a sectional view of CO in FIG. 4, and FIG. 7 is a sectional view of the phase adjustment operation section. 1.3...overwhelm, 2...reversal trunk, 11...
End shaft, 12...Fixed gear, 12a...Step part, 1
4... Adjustment gear, 18... Worm shaft, 19...
...Operation shaft, 22.23...Bevel gear, 24.
25...worm, 26...pin, 28...
・Warm foil. Patent applicant: Komori Printing Machinery Co., Ltd., 4 people, J. Yamakawa, J. Kaiju (and 1 other person) Figure 5 Figure 6 Procedural amendment export) 1. 1976-1 Patent Application No. 176512 2, Phase Adjustment Device for Sheet-Fed Rotary Printing Press with Reversing Mechanism Relationship between patent applicant □, a!
l□(b＋mM□J Month Month・j Showa Year Month 8th Supplement 11 will increase the number of inventions...(1)
"Angle θ" in the 8th and 12th lines of the specification No. 4jj is "
The angle θ and the reversing claw 80 rotation angle α” are corrected. (21 Figures 1 and 2 are revised in Appendix 9.

Claims (1)

[Claims] In a sheet-fed rotary printing press with a reversing mechanism in which the paper is reversed between the two printing cylinders by means of a nine-reversing steel with surfaces facing both adjacent printing cables, a downstream side a fixed gear that meshes with the gear on the printing cylinder; an 11m gear that is adjacent to the fixed gear and is loosely installed in its stepped portion and meshes with the printing/stacking gear on the upstream side; and an outer end surface of the fixed gear. nine worm shafts that are adjacent to and axially mounted in the diametrical direction thereof; nine pairs of worms that are integrally provided on the worm shaft at substantially symmetrical positions on both sides of the fixed gear axis; Two pairs of worm wheels rotatably supported by threaded members and meshing with each of the worms on both sides, the rotation of which causes the l1441 gear to be crimped and fixed to the fixed gear via the threaded member. 1. A phase adjustment device for a sheet-fed rotary printing press with a reversing mechanism, comprising: a worm wheel that moves forward and backward in the direction of release from pressure bonding; and means for rotating a worm shaft.