JPH0659969B2 - Roller drive device for entering the home of printing machine - Google Patents

Description

Description: TECHNICAL FIELD [0001] The present invention relates to a drive device for a paper-feeding roller which is above a former for half-folding a web in a printing machine and feeds the web to the former. .

[Prior art]

The web-fed rotary printing machine is equipped with a folding machine that cuts and folds a dried and cooled web after printing into a predetermined size. This folding machine is equipped with a former that folds the web in half in the width direction, a folding cylinder group that cuts and folds the web in the length direction, and a chopper device that folds this in the perpendicular direction. These are selected and used according to the specifications of. Of these, the former is formed in the shape of an inverted triangular plate and is set up with a slight inclination, and the web pulled out by the drag roller for paper insertion mounted above it slides on the plane of the inclined former. While passing through the lower lead roller, it is folded from the center in the axial direction and is conveyed in a direction orthogonal to the paper feeding direction at the upper end of the former.

Conventionally, such a former is a fixed type and the position of the folding end does not change even if the paper size, that is, the width of the web, changes, but the paper size is extremely small with the recent diversification of printed materials. In such a case, if the former is fixed, it is necessary to move the chopper device and paper feed tape etc. each time the paper size changes, so it is possible to make the former movable and fold it even if the paper size changes. It is often adopted to keep the center position of the Ding unchanged. In this case, the drag roller above the former also moves due to the movement of the former, but since the drag roller is a drive roller and is linked to the drive-side gear box by the drive shaft, in the conventional case, this drive connecting portion is The universal joint was used to absorb the axial center movement between the output part of the gearbox and the drag roller.

However, in such a conventional device, since the moving distance of the former or the position of the gear box is limited due to the universal joint method, the refraction angle of the drive shaft is limited to about 4 °. However, there is a drawback in that the fold accuracy decreases due to fluctuations. Therefore, it is not possible to deal with the folding use that requires a large movement of the former, and the gearbox using the bevel gear and the universal joint are required, so that the structure is complicated and can be provided at a low cost. There wasn't.

[Outline of Invention]

The present invention has been made in view of the above points, and a sub-frame supporting a former and a drag roller above the former is provided movably with respect to the main frame, and an intermediate shaft having an axis parallel to the moving direction. Is rotatably supported on the main frame side and is drivingly connected to the driving side. The rotator is rotatably supported on the intermediate shaft so as to mesh in the rotation direction and to be slidable in the axial direction. It is possible to drive the drag roller without load fluctuation regardless of the movement of the former by providing the bearing for the sub-frame and drivingly linking the rotary body and the rotary body connected to the drag roller in an endless belt. Improve folding accuracy,
Provided is a roller driving device for entering a former of a printing machine, which is configured so as to be capable of handling printed matter having various folding specifications. Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

〔Example〕

1 to 4 show an embodiment of a roller for driving a former sheet according to the present invention. FIG. 1 is a front view of an origami paper of a printing machine which carries out this, and FIG. 2 is a side view of the same. FIG. 3 is an enlarged side view showing a part of the main part shown in FIG. 2 in a cutaway manner, and FIG. 4 is an enlarged front view and an enlarged side view showing a part of the subframe supporting part cut away. In these drawings, a folding machine 1 of a printing machine is provided with a folding machine frame 2 fixed to a floor surface, and a pair of left and right main frames 3 whose upper portions are connected by stays are erected on an upper surface thereof. . Between the folding machine 1 and a printing unit and a sheet feeding device (not shown) located on the back side of the paper in FIG. 1, a line shaft 4 drivingly connected to the prime mover extends from the back side of the paper in FIG. 1 toward the front side. The sheet feeding device and the printing unit are rotationally driven from the driving side via the line shaft 4.

Reference numeral 5 denotes a continuously variable transmission supported by the folding machine frame 2 via a base 6, and its input shaft 7 is drivingly connected to the line shaft 4 by a timing bell and 8. The output shaft 8, which is continuously variable with respect to the input shaft 7, projects toward the opposite side of the input shaft 7. Brackets 9 and 10 are fixed to the vertical member and the lower horizontal member of one of the main frames 3, respectively.
An intermediate shaft 11 is rotatably supported by 10 via a bearing 12 in a state in which movement in the axial direction is restricted. A pulley 13 is mounted on the protruding portion of the intermediate shaft 11 from the bracket 9 on the main plane 3 side. The tension pulley 1 is provided between the pulley 13 and the pulley 14 on the output shaft 8.
The intermediate belt 11 is rotatably driven from the continuously variable transmission 5 side with the timing belt 16 tensioned by 5 being stretched.

On the other hand, on the upper surface of the folding machine frame 2, a pair of left and right rails 17 extending to the full width of the frame from the front side to the paper back side in FIG. 1 are fixed by bolts 18 in the vicinity of the main frame 3 so as to be parallel to this. Further, as shown in FIG. 4, a pair of front and rear rails 19 formed in parallel with the rails 17 are provided on the inner upper portions of the left and right main frames 3.
Are fixed with bolts.

Reference numeral 21 denotes a sub-frame provided with a total of four front, rear, left and right, U-shaped slide fittings each provided with a dovetail groove slidably engaged with the rail 17 at the lower end thereof. 22 are fixed by bolts 23, and slide metal fittings 24 having dovetail grooves slidably engaged with the rails 19 are fixed by bolts 25 at their upper ends. By doing so, each sub-frame 21 is movable in the front-rear direction along the rails 17 and 19 within the length of the rail 19 by a drive device (not shown). A pair of front and rear drag rollers 26 are rotatably mounted via bearings between each pair of left and right sub-frames 21 and 21, and a pair of upper and lower drag frames 26 are provided between the left and right main frames 3 and 3. The drag rollers 28 and 29 are axially mounted on the one side drag roller 26 at a position forming an isosceles triangle as viewed from the side. The bracket 30 is provided below the protruding portion of the drag roller 26 outward from the sub-frame 21.
A transmission box 32 having an output shaft connected to the drag roller 26 by a coupling 31 is fixed on the bracket 30. Conduction box 32
The power transmission device is housed in the input shaft 33.
Timing 3 including a tension pulley 36 that projects from the sub-frame 21 side and applies tension between the upper pulley 34 and a pulley 35 (described later) on the intermediate shaft 11
7, the drag roller 26 is rotationally driven from the intermediate shaft 11 side. The pulley 35 is concentric with the intermediate shaft 11, but is not fixed to the intermediate shaft 11 and is supported on the subframe 21 side. That is, the intermediate shaft 11 is provided with the spline 38, and the pulley 35 is slidably engaged with the intermediate shaft 11 in the rotational direction by engaging the spline groove with the spline 38. Is rotatably supported by a bearing 39 fixed to the sub-frame 21 in a state of being axially moved or restricted. By doing so, since the intermediate shaft 11 is fixed in the axial direction, even if the subframe 21 moves in the axial direction of the intermediate shaft 11, the bearing 39 integrated with the subframe 31 is formed.
The pulley 35 held by moves on the spline 38,
The rotation of the intermediate shaft 11 is transmitted to the drag roller 26 without any trouble.

Further, a transmission box 41 having a power transmission device accommodated therein is provided on a bracket 40 that is provided to project outward from the main frame 3 obliquely below the bracket 30.
Is fixed, and a pulley 43 on the input shaft 42,
A timing belt 47 tensioned by a tension pulley 46 on the main plane 3 side is stretched between a pulley 45 fixed to the intermediate shaft 11 by a key 44, and a power transmission device in a transmission gear box 41. Is the intermediate shaft 11
It is driven to rotate from the side. A pulley 48 fixed to the output shaft of the transmission box 41 and the drag rollers 28, 2
9 and the pulleys 49, 50 on the main frame 3
The timing belt 52, which is tensioned by the tension pulley 51 on the side
9 is rotationally driven from the conduction box 41 side.

Reference numeral 53A indicates a former formed in the shape of an inverted triangle plate.
And is slanted downward from the lower side of the drag roller 26 toward the lower side. Further, below the drag roller 29, the folder 1 is dried and cooled after printing.
A plurality of guide rollers 55 to 59 for guiding the web 54 guided to the drag roller 29 are mounted on the shaft. In the present embodiment, the two-layered web 54 guided to the drag roller 29 is The webs 54A and 54B are separated at the exit of the drag roller 29 and are guided to the drag roller 26 and the drag roller 28, respectively. On the side opposite to the former 53A with respect to the machine center line L shown in FIG.
3B are arranged symmetrically and the drag roller 2
The web 54A guided to 6 is folded in half in the width direction by the former 53A, and the web 5A guided to the drag roller 28.
4B is turned by a turn bar or a guide roller (not shown), and then half-folded in the width direction by the former 53B. Second
Reference numeral 60 in the drawing denotes a compensator roller for adjusting the phase of the web 54B. In FIG. 1, 61 is a lead roller, 62 and 63 are nippig rollers, and 6
Reference numeral 4 denotes a horizontal sewing machine cylinder, and the webs 53A and 53B whose tensions have been adjusted by drawing out these rollers are guided to the origami section.

The operation of the folder 1 configured as above will be described. The rotation of the line shaft 4 driven from the prime mover is transmitted to the input shaft 7 of the continuously variable transmission 5 to be changed in speed, and then transmitted from the output shaft 8 to the intermediate shaft 11 by the timing belt 16. The rotation of the intermediate shaft 11 is rotated by the timing belt 47 stretched around the coaxial pulley 45 by the input shaft 42 of the conduction box 41.
Is transmitted to the input shaft 33 of the transmission box 32 by a timing belt 37 stretched around a pulley 35 that rotates integrally with the intermediate shaft 11 by spline engagement. Further, the rotation of the input shaft 42 is transmitted to the output shaft by the power transmission device inside the transmission box 41 and then transmitted to the drag rollers 28 and 29 by the timing belt 52. Further, the rotation of the input shaft 33 is transmitted to the output shaft by the power transmission device in the transmission box 32 and then transmitted to the drag roller 26 via the coupling 31.

Then, when the two-ply web 54 dried after printing is guided to the folding machine 1, the web 54 is guided by the guide rollers 55 to 59.
After being deflected by and dragged by the drag roller 29, the web is divided into webs 54A and 54B and guided to the drag roller 26 and the drag roller 28, respectively. The web 54A pulled out by the drag roller 26 is warmer 53A.
After being half-folded in the width direction, it is guided to the origami section through the roller groups 61 to 64. Further, the web 54B pulled out by the drag roller 28 passes through the turn bar and the guide roller and is half-folded in the width direction by the former 53B.
It is led to the origami section through ~ 64.

Then, when the paper size changes, the side frame 21 moves along the rails 17 and 19 by operating a drive device (not shown), and the formers 53A and 53B supported by the side frame 21 move to the machine center line. Move in the perspective direction with respect to L. The positions of the formers 53A and 53B shown in FIG. 2 indicate the case where the paper size is the maximum width. Therefore, when the paper size becomes smaller, the former is moved backward (the former 53A is moved to the right). Make sure that the widthwise center of the paper is at a fixed position. As a result,
Even if the paper size of the webs 54A and 54B changes, the position of the center line in the width direction of the paper half-folded by the formers 53A and 54B before and after the change can always be the same, so that the chopper device and the paper can be used. There is no need to move the position of the feeding tape. In this case, the drag roller 26 also moves integrally with the side frame 21, but at the same time, the pulley 35 whose movement in the axial direction is restricted by the bearing 39 integrated with the side frame 21 is formed by the spline 38 of the intermediate shaft 11. Since it moves by the same amount as the upper pulley 34, rotation transmission by the timing 37 is not hindered and the timing belt 37 does not bend in the width direction.

In this embodiment, the opposite former type folding machine in which the formers 53A and 53B are provided facing each other has been exemplified, but the same applies to a double former in which the formers 53A and 53B are in the same direction or a single former. It can be carried out.

〔The invention's effect〕

As is apparent from the above description, according to the present invention, in the former paper-feeding roller driving device of the printing machine, the sub-frame supporting the former and the drag roller is provided movably with respect to the main frame, and the moving direction An intermediate shaft having an axis parallel to the main frame side is rotatably supported and drivingly connected to the driving side, and the rotating body is rotatably supported on the intermediate shaft in a rotational direction by meshing in a rotational direction. A bearing for rotatably holding the rotating body is provided in the sub-frame, and the rotating body and the rotating body connected to the drag roller are drivingly connected to each other by an endless belt so that the upper and lower rotating bodies can be moved even when the former is moved. However, following this, the endless belt does not bend in the width direction by moving the same amount. Therefore, regardless of the movement of the former, the folding accuracy can be improved more than before without load fluctuation, and the distance between the drag roller and its driving shaft is not limited, and the best operating space can be secured. Further, not only when there is one former, but also when it is an opposite former or a double former, the former can be moved without load fluctuation and various folding specifications can be dealt with.

[Brief description of drawings]

1 to 4 show an embodiment of a roller driving device for entering a former of a printing machine according to the present invention. FIG. 1 is a front view of a folding machine of a printing machine which carries out this, and FIG. 2 is the same. Side view,
FIG. 3 is an enlarged side view showing a part of the main part shown in FIG. 2 by breaking it, and FIG. 4 is an enlarged front view and an enlarged side view showing a part of the sub-frame supporting part cut away. 3 ... Main frame, 9, 10 ... Bracket, 11
...... Intermediate shaft, 21 ...... Subframe, 26 ...... Drag roller, 34,35 ...... Pulley, 37 ...... Timing belt, 38 ...... Spline, 39 ...... Bearing, 53A, 5
3B ... Former, 54 ... Web.

Claims (1)

[Claims] 1. A main frame comprising a sub-frame (21) supporting a former (53A) and a drag roller (26) above it.
Provided so as to be movable in the feeding direction of the web (54) with respect to (3),
An intermediate shaft (11) having an axis parallel to this moving direction is pivotally supported on the main frame (3) side and is drivingly connected to the driving side. A rotating body (35) is rotatably supported, and a bearing (39) for rotatably holding the rotating body (35) is provided in the sub-frame (21), and the rotating body (35) and the drag roller (26 ) Is connected to the rotating body (34) connected to the endless belt (37) by an endless belt (37).