JP2000272799A - Sheet speed reducer for printer sheeter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the folding or biting of a sheet and perform a high-speed operation to improve the working efficiency by providing a sheet pressing mechanism in such a manner as to be movable along the longitudinal direction of a rotating shaft. SOLUTION: The snapper 110 of a sheet speed reducer is formed of a pressing brush attached to a bracket mounted on a snapper shaft 73 and rotated therewith. The snapper 110 is closely inserted to the outside of the snapper shaft 74 through a key 112 so as to be regulated in a rotating direction to the snapper shaft 74 and movable to the axial direction of the snapper shaft 74, and it is movable in the longitudinal direction of a rotating shaft. Since the snapper is provided in such a manner as to be movable in the width direction of a sheet or the longitudinal direction of the rotating shaft, the snapper can be moved and set in the best position relative to the sheet width even if the position of the sheet is shifted in the width direction after the lapse of a small time from the start of paper feed, and the folding or biting of the sheet can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet speed reducer for a printing press sheeter, and more particularly to a sheet (cut) obtained by cutting a printing web fed from a rotary printing press or a web fed from a stock roll into a predetermined length. The present invention relates to a sheet speed reducer for a sheeter for a printing press, which can press a sheet (paper) at an appropriate position and pressing force, reduce the speed, and convey the sheet to a stacking section for stacking.

[0002]

2. Description of the Related Art The final stage of a web offset printing press includes:
The printing web fed from the printing press unit is cut to a predetermined length to form a cut sheet (sheet) in a sheet state, and the sheet is reduced and supplied to a stack unit to sequentially stack the sheeter device online or Installed offline.
This theta device applies a tension to the cut section that cuts the print web conveyed at a high speed at the printing speed, so that the cut length at this cut section does not vary, and also stacks the paper at the subsequent low-speed section. A high-speed transport unit that transports at a speed slightly higher than the printing speed to take timing, etc., and a low-speed transport unit that reduces the transport speed to a speed that does not affect lamination for lamination to the final stack unit. It has. FIG. 8 shows a conventional transport unit.

[0005] The transport unit 10 is provided on the rear side of a cutting unit (neither is shown) for cutting a print web sent from a printing unit into a predetermined length. This transport unit 10
Is provided with a high-speed transport unit 12 and a low-speed transport unit 14 continuously arranged on the succeeding stage, and the sheet S discharged from the cut unit as shown by the arrow 16 is set on the right side of the drawing on the front end side, not shown. It is conveyed to the stack section and laminated. And
The high-speed transport unit 12 and the low-speed transport unit 14 include a lower high-speed belt device 18 and a lower low-speed belt device 20 that are high-speed transport units that support and transport the lower surface of the sheet S. Upper holding belt device 2 for holding the upper surface
2 are provided.

The lower high-speed belt device 18 comprises a lower high-speed belt 28 wound between a pair of rolls 24, 26, tension rolls 30, 32 for adjusting the tension of the lower high-speed belt 28, and a sheet of the lower high-speed belt 28. It is composed of a plate-shaped table 29 disposed below the transport section.
The lower high-speed belt device 18 is connected to the roll 26 on the exit side.
Is a driving roll, and the lower high-speed belt 28 is driven to circulate at a high speed slightly higher than the printing speed (conveying speed of the printing web) as indicated by an arrow 34, so that the sheets discharged from the cut portion are spaced from each other. Carry it as it should.

The lower low-speed belt device 20 is provided with a lower low-speed belt 40 wound around a pair of rolls 36 and 38.
And tension rolls 42 and 44 for adjusting the tension of the lower low-speed belt 40, and a table 46 disposed below the sheet conveying section of the lower low-speed belt 40. In the lower low-speed belt device 20, the roll 38 on the exit side is a driving roll, and the lower low-speed belt 40
Is driven at a speed as low as possible to feed the sheet S fed from the lower high-speed belt device 18 to the stacking section and stack the sheet S as indicated by an arrow 48.

An upper pressing belt device 22 disposed above the lower high-speed belt device 18 and the lower low-speed belt device 20.
Has an upper pressing belt 54 wound around a belt roll 50 on the front end side and a belt roll 52 on the rear end side, and guide rolls 56, 58 are disposed between these rolls 50, 52. is there. In the upper holding belt device 22, a tension roll 60 for adjusting the tension of the upper holding belt 54 is provided at an upper portion, and a driving roll 62 is provided between the tension roll 60 and the belt roll 52. is there. Then, the upper holding belt 54
Are arranged to face each other such that a conveyance gap of the sheet S is formed between the lower high-speed belt 28 and the lower low-speed belt 40,
The sheet S rests on the lower belts 28 and 40 and is circulated as indicated by an arrow 64 at a speed corresponding to the transport speed of the lower high-speed belt 28. The belt roll 50 and the belt roll 52 are attached to the distal ends of the rotatable arms 66 and 68,
As indicated by the dashed line, the arm 6
The rolls 50 and 52 can be moved upward by rotating the rollers 6 and 68.

The above-described lower high-speed belt 28, lower low-speed belt 40, and upper pressing belt 54 have a structure in which a plurality of thin tape-shaped belts are arranged in parallel at appropriate intervals. The sheet S is conveyed by the lower high-speed belt 28, the lower low-speed belt 40, and the upper pressing belt 54. In order to shift from the high-speed state to a low-speed state in which the sheet S can be fed to the stacking unit, the lower low-speed belt device 20 is used. A deceleration device for the sheet S is provided on the upper pressing belt device 22 side in a portion facing the above. The speed reducer includes a snubber 70 on the sheet entrance side of the lower low-speed belt device 20, and a speed reduction roll (squaring roll) 72 disposed in front of the snubber 70 and rotating as indicated by an arrow 71. A plurality of snubbers 70 and deceleration rolls 72 are provided,
Are arranged on a plurality of tape-shaped belts.

As shown in detail in FIG. 9, the snubber 70 has a structure in which a small-diameter snubber roll 78 is attached to a rotating snubber shaft 74 via a snubber arm 76 having a half-split structure. Then, the snubber shaft 74 rotates the snubber arm 76 in the counterclockwise direction (the feeding direction of the sheet S) as shown by an arrow 80 in synchronization with the timing of the sheet S being sent to the lower low-speed belt device 20. As a result, the snubber roll 78 moves along the locus 82 indicated by the two-dot chain line.
, And the rear edge of the sheet S supplied to the lower low-speed belt device 20 is pressed against the lower low-speed belt 40 to reduce the speed of the sheet S. Then, the sheet S decelerated by the snubber 70 hits the deceleration roll 72 installed at the front, and is sequentially shifted in the transport direction and is sequentially stacked in a tile shape.

That is, conventionally, the lower high-speed belt device 18
Speed slightly higher than the web speed of the printing press V1m /
s at a low speed V2 of about 1/10.
In order to reduce the speed to m / s, the leading end of the sheet S (the leading end of the length L of the sheet) is applied to the reduction roller 72 installed above the lower low-speed belt device 20 to reduce the speed. However, sheet S
The snubber roll 78 moves the trailing edge of the sheet S to a low-speed belt because the impact force when the sheet S hits the deceleration roll 72 causes the front end to bend or break, which hinders the high-speed operation of the printing press. The sheet S is pressed against the upper surface to take the kinetic energy of the sheet S so as to prevent the sheet S from being bent or broken.

Further, in the above, the snubber 70 has a structure in which a small-diameter snubber roll 78 is attached to a rotating snubber shaft 74 via a snubber arm 76, but a snubber 70A of another embodiment is shown in FIG. As shown in FIG. 7, the pressing brush 94 may be formed so as to be attached to the snubber shaft 74 via the bracket 92. The bracket 92 is formed by a pair of rectangular block joints 96 having a semicircular groove that fits the snubber shaft 74, and a pressing brush 94 is attached to an outer edge of one of the blocks. The tip rotation locus of the pressing brush 94 protrudes from the conveying surface of the upper pressing belt 54, and the protruding length is in contact with the conveying surface to the lower lower speed belt 40 when the sheet S is separated. The dimensions are set so that The snapper shaft 74 is rotated by a pulley 90 (shown in FIG. 6) of the driving device attached to the base end of the shaft, and the pressing brush 94 is disposed between the upper pressing belts 54 arranged at a predetermined interval. And makes contact with the lower low-speed belt 40 disposed one time only during one rotation. The contact timing is such that when the leading end of the sheet S conveyed by the upper pressing belt 54 approaches the deceleration roll 72, the leading end of the pressing brush 94 contacts the upper surface of the sheet S, and
Start holding down. Then, the sheet S is fed in the direction of the arrow Za, and the entire surface of the pressing brush 94 presses the paper buttocks of the sheet S against the lower low-speed belt 40 just before the leading end of the sheet S hits the deceleration roll 72, and acts by increasing the pressing force. , Sheet S
To reduce the speed to the transport speed of the lower low-speed belt 40 (belt rotation speed). The decelerated sheets S are piled up in a tile shape with their leading ends hitting the deceleration rolls 72 and shifted little by little in the transport direction, discharged by the lower low-speed belt 40 to the stack portion, where they are stacked and piled. Has become.

[0011]

However, in a conventional printing press theta, the sheet position may differ by about 20 millimeters in the paper width direction when a short time has elapsed since the start of paper feeding. What can set a snubber in the best position with respect to is desired. Moreover, it is desired that the snubber can be set while the printing press is operating. In addition, if there is a transport belt at the paper end of the printing web, the paper end may be broken or jamming may occur at the time of sheet ejection (especially when the roll paper size is changed). Therefore, it is necessary to move the transport belt in the paper width direction. ,
Along with this, the snubber must be moved, but since the snubber is located between the transport belts, the printing press is stopped, the fixing screw of the snubber is loosened with a spanner wrench, and the snubber is moved in the snubber axial direction. For this reason, it is necessary to stop the printing press, and there is a problem that work efficiency is reduced.

When a strong pressing pressure is applied to the sheet by the conventional snubber roller, the sheet is strongly pressed against the upper surface of the lower low-speed belt, and the printing ink of the lower sheet or dirt on the belt appears on the back surface of the upper sheet. There is a problem that the print quality is impaired due to the formation of dirt indentation due to the ink.
For this reason, the snubber roll must be set so as to have a slight gap adapted to the low-speed belt even if the sheet is held down, and this adjustment takes time, reduces work efficiency, and the gap is large. In addition, the deceleration of the sheet by the snubber roll becomes insufficient, and the printing press cannot be operated at high speed in order to prevent occurrence of buckling or the like when the sheet collides with the deceleration roller. In addition, if the gap is small, there is a problem that dirt imprints due to the dirt on the belt appear and print quality is impaired.

In addition, unlike the snubber roller, the brush does not require a set having a suitable gap between the brush and the low-speed belt. However, since the pressing force of the brush is constant, the material of the sheet and the traveling When the pressing force applied to the sheet is appropriately changed according to the speed or the like, it takes time to adjust the length of the brush protruding from the conveying surface of the upper pressing belt, and the work efficiency is reduced. Further, it is necessary to set the length of the brush protruding in the width direction of the sheet to be the same, but there is a problem that adjustment is difficult.

The present invention focuses on the above-mentioned conventional problems, and can adjust a snubber and a rotating shaft movably during operation of a printing press, and is fed from a printing web or a paper roll fed from a rotary printing press. A sheeter for a printing press that cuts a web into a sheet (cut paper) of a predetermined length, hardly causes indentation and dirt on the sheet, and can reduce the speed to an appropriate speed and convey the sheet to a stack unit for stacking. It is an object to provide a seat reduction device. Also,
An object of the present invention is to enable high-speed rotation of a printing press.

[0015]

According to a first aspect of the present invention, there is provided a sheet device for a sheeter for a printing press according to the present invention, wherein a trailing edge of a sheet supplied from a high-speed conveying means to a low-speed conveying means is provided. The sheet pressing device is attached to the rotating shaft and pressed against the low-speed conveying device by the rotating sheet pressing device to reduce the speed to the conveying speed of the low-speed conveying device. It is configured to be movable along the longitudinal direction of the rotating shaft.

In the second invention, the trailing edge portion of the sheet supplied from the high-speed conveying means to the low-speed conveying means is pressed against the low-speed conveying means by a sheet pressing means which is attached to a rotating shaft and rotates. In the sheet speed reduction device for a printing press sheeter that reduces the speed to the conveyance speed of the printing press, the rotation shaft to which the sheet pressing means is attached is provided so as to be freely movable in the vertical direction by the rotation shaft height movement means.

The sheet pressing means according to the present invention is provided so as to be movable along the longitudinal direction of the attached rotary shaft even during the operation of transferring the sheet from the high-speed conveying means to the low-speed conveying means at a reduced speed. good. In the rotating shaft height moving means according to the present invention, the height of the rotating shaft in the vertical direction may be moved even during the operation of transferring the sheet from the high speed conveying means to the low speed conveying means at a reduced speed.

Further, the sheet pressing means according to the present invention, even during the operation of transferring the sheet at a reduced speed from the high-speed conveying means to the low-speed conveying means, is operated by the pressing means moving operation portion arranged near the upper portion of the frame to rotate the rotating shaft. Move along the longitudinal direction,
Alternatively, and / or a configuration in which the height in the vertical direction is moved by a rotating shaft height moving operation unit arranged near the upper part of the frame is preferable.

[0019]

According to the above construction, the snubber is provided so as to be movable in the sheet width direction, that is, in the longitudinal direction of the rotation shaft. On the other hand, shift in the paper width direction (approximately 2
(About 0 mm), the snubber can be moved to the best position with respect to the paper width. This snubber can be moved to a good position in the sheet width direction of the sheet during the operation of the printing press, so that the work can be easily performed without stopping the printing press. In addition, even if the paper edge is broken or jamming occurs when the sheet is taken out, the snubber can be moved in the sheet width direction of the sheet, so that it is easy to adjust the time when the sheet is taken out and when the roll paper size is changed. Can be started quickly. Further, since the pressing means moving operation section for moving the sheet pressing means in the longitudinal direction of the rotation shaft can be performed by the operation section provided near the upper portion of the frame, the work can be easily performed. Further, if the pressing means moving operation unit is provided outside the vicinity of the upper part of the frame and near the snubber, the operation may be further facilitated.

The sheet pressing means for pressing the sheet against the low-speed belt has a vertically movable height by means of a rotating shaft height moving means, so that a suitable pressing force can be easily adjusted using either a snubber roller or a brush. can do. In addition, since the height of the sheet pressing means can be moved during the operation of the printing press, it is not necessary to stop the printing press, so that the work can be easily performed, and the seat can be easily decelerated to a speed suitable for the low-speed belt. The occurrence of bending and the like can be prevented. Further, the movement of the height of the sheet pressing means can easily and appropriately change the pressing force applied to the sheet according to the material of the sheet, the traveling speed, and the like. In addition, since the height of the sheet pressing means can be moved separately on the right and left sides of the sheet in the paper width direction, the length of the brush protruding in the sheet width direction can be easily adjusted, and the dirt and indentation of the sheet can be reduced. Can be prevented. Further, since the height of the sheet pressing means can be moved by the operation unit provided near the upper part of the frame, the work can be easily performed. Further, if the sheet pressing means is provided near the upper part of the frame and near the snubber, the operation may be further facilitated.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a sheet speed reducing device for a sheeter for a printing press according to the present invention will be described below in detail with reference to the accompanying drawings. Note that the same reference numerals are given to portions corresponding to the portions described in the related art, and the description thereof is omitted.

FIG. 1 is a partially enlarged side view of a sheeter for a printing press according to an embodiment of the present invention, in which a snubber 110 of a sheet reduction device is moved in a sheet width direction of a sheet S (a longitudinal direction of a rotation axis).
FIG. FIG. 2 is an exploded plan view of FIG. 1 showing a configuration in which a snubber 110, which is a sheet reduction device of a printing press sheeter, is moved in the sheet width direction of the sheet S. FIG. 2 shows one side of the frame 88R, and a similar pressing means moving operation unit 105 is attached to the other frame 88L. FIG. 3 is a sectional view of the handle portion. As shown in FIGS. 9 and 10, the snubber 110 is arranged on the tape-shaped belt constituting the lower low-speed belt 40 of the lower low-speed belt device 20, similarly to the conventional snubbers 70 and 70A. I have. Snubber 1
Reference numeral 10 denotes a pressing brush 94 attached to a bracket 92 which is attached to a snubber shaft 74 and rotated. The snubber shaft 74 is rotatably supported by frames 88 formed at both ends of the theta shown in FIG. 8, and is rotated by a pulley 90 (shown in FIG. 6) of the driving device. Further, the snubber 110 may have a structure in which a small-diameter snubber roll 78 is attached via a snubber arm 76 to a snubber shaft 74 that is a rotating shaft as shown in FIG.

The bracket 92 provided with the pressing brush 94 is a pair of rectangular block joined bodies 9 having a semicircular groove.
6. The snubber 110 has a key 112 so that the rotation direction of the snubber shaft 74 is regulated with respect to the snubber shaft 74 and the snubber shaft 110 moves in the axial direction of the snubber shaft 74.
And is inserted into the outer diameter of the snubber shaft 74 in a pivotally tight manner. The key 112 is fitted in a shaft key groove 114 formed in the outer diameter of the snubber shaft 74 in the axial direction, and a hole key groove 116 formed in a pair of rectangular block joined bodies 96 (FIG. (Shown in FIG. 1) is slidably and pivotally inserted. On the side portions of the pair of rectangular block joined bodies 96,
A cam follower 118 that moves the snubber 110 in the axial direction of the snubber shaft 74 is attached. The cam follower 118 is formed by a grooved hollow cylindrical member which is inserted into the outer diameter of the snubber shaft 74 tightly and has an outer peripheral groove 118a in the outer diameter portion. A rectangular block joined body 96 is provided on the inner diameter of the cam follower 118.
A key groove 116 for a hole is formed in the same manner as described above, and the rotation direction is regulated with respect to the snubber shaft 74 similarly to the block joined body 96, and the cam follower 118 is moved in the axial direction of the snubber shaft 74.

A cylindrical cam roller 120 is inserted into the outer peripheral groove 118a of the cam follower 118 in a tightly-closed manner, and moves the cam follower 118 in the axial direction of the snubber shaft 74, and moves the cam follower 118 with respect to the snubber shaft 74 at the moved position. Thus, the rotation of the cam follower 118 is guided.
The cam roller 120 has a stepped cylindrical shape,
The large diameter portion is inserted into the outer peripheral groove 118a of the cam follower 118, and the small diameter portion is formed with a connecting bolt 120a. The cam roller 120 is connected to the moving plate 1 via an L-shaped bracket 122 by a connecting bolt 120a.
24 is attached. At this time, the moving plate 124
And the side surface of the cam follower 118 has a small clearance so that sliding friction does not occur. Moving plate 124
Is formed by a plate-like plate having an elliptical shape in a side view, and bush holes 124a are formed at both ends thereof. The end of a stepped hollow cylindrical guide bush 126 is inserted into the hole 124a, and the cylindrical portion near the end abuts on the moving plate 124 and is attached to the moving plate 124 by bolts. .

Guide rods 128 and 130 are inserted into the inner diameter of the guide bush 126 in a pivotally tight manner.
4 guides the movement of the snubber shaft 74 at right angles to the axial direction of the snubber shaft 74. Both ends of the first guide rod 128 are fixed to the frame 88 via attachment brackets 132. Further, the second guide rod 130 is fixed to the frame 88 with both ends penetrating through holes provided in the frame 88.

A hole 124b for a nut is formed in a substantially central portion of the movable plate 124 (a bent portion of a plate-shaped plate having an O-shape in side view). Hole 124 for this nut
A nut 134 having a screw hole at the center is attached to b by a bolt. The screw portion of the operating shaft 136 having a screw 136a provided at one end thereof is screwed into the nut 134, and the meshing position of the screw portion changes with the rotation of the operating shaft 136, so that the movable plate 124 is connected to the snubber shaft 74. Are moved orthogonally to the axial direction of. The operating shaft 136 is provided at one end with the screw 13.
6a is provided, and the center portion is rotatably inserted into and supported by a hollow cylindrical shaft bush 138. The outer diameter portion of the shaft bush 138 is inserted into and supported by a hole provided in the frame 88, and is fixed to the frame 88 by a bolt. In addition, the distal ends of the rotatable arms 66 and 68 are attached to the outer diameter of the shaft bush 138,
As indicated by the two-dot chain line in FIG. 8, the arms 66 and 68 can be rotated to move the rolls 50 and 52 upward during maintenance or the like.

Thus, since the arms 66 and 68 and the operating shaft 136 are supported, they can be made compact. A bevel gear 140 is fixed to the other end of the operating shaft 136.
The lower side of 0 receives the reaction force of bevel gear 140,
A pair of thrust bearings 142 that allow rotation of the operation shaft 136 and a stopper member 144 that is interposed between the pair of thrust bearings 142 and regulates the axial movement of the operation shaft 136 are provided. A pair of thrust bearings 14
2 are held in contact with bearing brackets 146 fixed to the operating shaft 136, respectively. The stopper member 144 is formed in the shape of a flat plate.
Of the reaction force. One end of the stopper member 144 is fixed to the frame 88 via the plate 148. In addition, a block 150 described later is fixedly provided at the other end of the stopper member 144.

The bevel gear 140 includes a driving bevel gear 152.
Are orthogonally engaged. The drive bevel gear 152 is fixed to one end of the drive shaft 154. Also,
An operating handle 1 is provided at the other end of the driving shaft 154.
56 is fixed, and by rotating the handle 156, the driving bevel gear 15 is driven via the driving shaft 154.
2 and the bevel gear 140 meshing therewith is rotated. The handle 156 is disposed outside the frame 88 so that the handle 156 can be operated from outside the frame 88. The drive shaft 154 is rotatably supported by a pair of drive bearings 158 inserted into holes provided in the block 150. As shown in FIG. 3, a stopper bolt member 160 having a plurality of holes 160a formed in an outer peripheral portion is fixed to the driving shaft 154. Block 1
A flat plate-shaped stopper bracket 162 is fixed to 50, and a stopper bolt 164 is attached to the stopper bracket 162, and the tip of the stopper bolt 164 is a plurality of stopper bolt members 160. The drive shaft 154 is inserted into one of the holes 160a to prevent the drive shaft 154 from rotating.

The operation of the embodiment configured as described above is as follows. As described above, the sheet S (cut paper S) cut in the cut section (not shown) is conveyed by the lower high-speed belt device 18 at a speed V1 m / s slightly higher than the printing speed of the printing press, and is sent to the lower low-speed belt device 20. Supplied. And this lower low-speed belt device 2
The snubber 110 disposed on the upper side of the sheet supply side of the sheet No. 0 is pressed by the pressing brush 98 by the snubber shaft 74 at the timing of supplying the sheet S to the lower low-speed belt device 20 (rotation cycle of the fly knife forming the cut portion). Synchronously, the sheet S rotates in the feed direction of the sheet S as indicated by an arrow Za in FIG. When the rear end of the sheet S approaches the snubber 110, the tip of the pressing brush 98 comes into contact with the upper surface of the sheet S and starts to press the sheet S. The snubber 110 has moved the pressing brush 98 to a suitable position in accordance with the displacement of the sheet S. Therefore, just before the leading end of the sheet S hits the deceleration roll 72, the entire surface of the pressing brush 98 contacts the trailing end of the sheet S, and the pressing force for pressing the sheet S against the lower low-speed belt 40 acts weaker than before. Also, the kinetic energy of the sheet S is surely reduced to the conveyance speed (circular speed) V2 m / s of the lower low-speed belt 40. The decelerated sheets S are stacked in a tile shape with their leading ends abutting on the deceleration rolls 72 and slightly shifted in the transport direction, and are transported by the lower low-speed belt 40 to a stack portion (not shown) in front.

In the operation described above, according to the present invention, when the operator cuts the printing web fed from the rotary printing press or the web fed from the stock roll into sheets (cut paper) of a predetermined length, The snubber is adjusted to the printing web or the web being unwound from the stock roll. However, when a short period of time elapses after the start of paper feeding, the fed web may be shifted by about 20 millimeters to the left and right in the paper width direction (perpendicular to the sheet conveyance) with respect to the start of paper feeding. At this time,
The operator operates the stopper bolt 164 that locks the rotation of the handle 156, and inserts the hole 160a inserted therein.
To allow the drive shaft 154 to rotate.
Next, the operator rotates the handle 156 so that the snubber can be moved to the best position with respect to the sheet width.

By rotating the handle 156, its rotational force is changed to a driving shaft 154, a driving bevel gear 152, a bevel gear 140, an operating shaft 136,
Via the moving plate 124, the L-shaped bracket 122, the cam roller 120, and the cam follower 118, the snubber 10 can be set to move to the best position with respect to the paper width. At this time, since the operation can be performed without stopping the rotary printing press, it is easy to determine where the position of the snubber 110 should be moved, and the rotary printing press can be stopped during the operation of the rotary printing press. It is not necessary to do so, making the work easier. Also, even if the paper edge is broken or jamming occurs at the time of sheet feeding, the worker can move the snubber 110 in the sheet width direction of the sheet S, so that when the sheet is picked up in a short time and when the roll paper size is changed. Can be easily adjusted in the same manner as described above, and the start can be performed quickly. This operation can be easily performed because the handle 156 is installed outside the frame 88 near the snubber 110.

In the above, the sheet S is pressed by the snubber 110 which is a sheet pressing means for pressing the sheet S against the lower low-speed belt 40 which is a low-speed conveying means.
In the paper width direction (the front-rear direction on the paper surface of FIG. 1), that is, along the longitudinal direction of the snubber shaft 74 as the rotating shaft.

The snubber 110 as the sheet pressing means
The moving pressing means moving operation unit 105 moves the snubber 110 to a predetermined position along the longitudinal direction of the snubber shaft 74 of the rotation axis, and guides the rotation of the snubber 110 at that position. And a cam follower 118), and moving means 155 for moving the guide portion 119 to a predetermined position along the longitudinal direction of the snubber shaft 74.

In the above-described embodiment, the moving / pressing means moving / operating section 105 includes, specifically, the handle 156, the driving shaft 154, the driving bevel gear 152, the bevel gear 140, the operating shaft 136, the moving plate 124, and the L-shape. In the description, the snubber 110 includes a bracket 122 having a shape, a cam roller 120, and a cam follower 118, and the snubber 110 is moved along the longitudinal direction of the snubber shaft 74 as a rotating shaft. The operation shaft 138 is directly connected to the bracket 122 having the shape and shape,
The handle 156 may be attached to the operating shaft 138 and rotated to move the snubber 110 along the longitudinal direction of the rotation axis.

Next, a description will be given of the height moving means of the snubber shaft 74 of the rotary shaft on which the snubber 110 of the sheet pressing means is mounted. FIG. 4 is a partially enlarged side view of a rotating shaft height moving means of a snubber shaft 74 which is a sheet reduction device of a sheeter for a printing press according to an embodiment of the present invention, and FIG. 5 is attached to a frame 88L on one end side. FIG. 6 is a partial front sectional view of the rotating shaft height moving means of the snubber shaft 74, and FIG. 6 shows the rotating shaft height of the snubber shaft 74 attached to the frame 88R at the other end (the pulley 90 side of the driving device). It is a partial front sectional view of a moving means.

In FIGS. 4, 5, and 6, the snubber 110 constitutes the lower low-speed belt 40 of the lower low-speed belt device 20, as shown in FIGS. 9 and 10 as in the conventional snubbers 70 and 70A. It is arranged on a tape-shaped belt. In the snubber 110, the paragraph [0
010], the pressing brush 94 is attached to the snubber shaft 74 via the bracket 92.
The snubber shaft 74 includes an eccentric left eccentric bush 180L inserted into each of a pair of frames 88L, 88R formed at both ends of the theta shown in FIGS.
The right and left eccentric bushes 180R and the bearings 182 inserted into the respective eccentric bushes 180 rotatably support the frame 88 and are rotated by a pulley 90 (shown in FIG. 6) of the driving device. .

The left eccentric bush 180L is formed in a hollow cylindrical shape, and the center Oa of the inner diameter and the center Ob of the outer diameter are eccentric by an eccentric amount ε.
It is rotatably and pivotally inserted into a bush hole 88a formed in 8L. A trapezoidal block 184 is attached to the inner side surface of the left eccentric bush 180L. The block 184 is provided with a hole 186 penetrating the trapezoidal portion, and a slit groove 188 is formed so that the trapezoidal portion having the hole 186 bifurcates. The cylindrical pin 1 is inserted into the hole 186 of the trapezoidal portion.
90 is pivotally inserted pivotally. A screw hole 192 is formed in the center of the cylindrical pin in the longitudinal direction. A rotating shaft moving shaft 194 having a screw at one end is screwed into the screw hole 192.

At the other end of the rotating shaft moving shaft 194, a rotating shaft moving handle 194a is attached.
The rotating shaft moving shaft 194 is supported by a bracket 198 that is rotatable upward and that is swingable in a bracket hole 196 formed in the frame 88R. The bracket 198 has a cylindrical portion and a rectangular shape. The cylindrical portion is swingably inserted into the bracket hole 196, and the rectangular shape rotatably supports the rotation shaft moving shaft 194. Further, a pair of stopper members 20 for restricting axial movement of the rotation shaft moving shaft 194 with the rectangular portion of the bracket 198 interposed therebetween.
0 is provided.

The trapezoidal block 184 has a plate-shaped pointer 202 for measuring the height position of the snubber shaft 74 and a pointed tip 202 attached thereto. Pointed pointer 202
A plate-like gauge 204 provided with a scale (G) facing thereto is attached to the frame 88R at the end of the frame 88R.
A plate-like gauge 204 with the pointed tip of the pointer 202 facing
The height position of the snubber shaft 74 is measured based on the position indicating the scale. Note that the pointer 202 and the plate gauge 204
6 is shown in FIG. 6 and is developed downward.

A retaining bracket 206 is attached to the outer side surface of the left eccentric bush 180L. As shown in FIG. 7 (a view taken in the direction of arrow W in FIG. 5), a graduated disk 208 having an outer disk shape and graduations provided on an outer peripheral portion is provided at the other end of the snubber shaft 74. I have. An angle pointer 210 having a pointed tip is attached to the frame 88R at a position facing the graduated disk 208. The snubber 110 attached to the snubber shaft 74 at a position where the pointed tip of the angle pointer 210 points to the opposite scale of the opposed scaled disk 208.
Can be measured, and the angular position of the snubber 110 with respect to the reference, that is, the position of the pressing brush 94 can be numerically detected.

In the above description, the means for moving the height of the snubber shaft 74 of the rotating shaft on which the snubber 110 of the sheet pressing means is mounted, that is, the rotating shaft height moving means 220 is an eccentric which supports the snubber shaft 74 with respect to the frame 88. The bush 180 and the block 18 for rotating the eccentric bush 180
4, a rotation shaft moving shaft 194 that moves the block 184 in the vertical direction, a stopper member 200 that supports the rotation of the rotation shaft movement shaft 194 and restricts the movement in the axial direction, and a rotation shaft movement shaft 194. And a rotating shaft moving handle 194a that rotates. Further, when the rotating shaft height moving means 220 is provided near the frame 88 and attached to the snubber shaft 74, the operation and the adjustment of the pressing force can be easily performed. Rotation axis height moving means 2
Reference numeral 20 denotes a pointer 2 at which the height position of the snubber shaft 74 is measured.
02 and the plate-like gauge 204 can be easily adjusted to adjust the pressing force. Also, handle 15
6 may be a crank shape.

In FIG. 4, one end of the cylinder Cy is attached to the frame 88 and the other end thereof is attached to the arm 66, so that the cylinder Cy operates during maintenance as shown by the two-dot chain line in FIG. The rolls 50 and 52 are moved upward by rotating 66 and 68.

The operation of the embodiment configured as described above is as follows. The operator operates the rotary shaft moving handle 1 to change the pressing force applied to the sheet according to the material, running speed, and the like of the printing web fed from the rotary printing press or the web fed from the paper roll.
Rotate 94a. The rotation of the rotating shaft moving handle 194a is transmitted to the rotating shaft moving shaft 194 and rotates the screw formed at the tip. At this time, the shaft 194 for rotating shaft movement is restricted from moving in the axial direction by the pair of stopper members 200, and rotates at that position. With the rotation of the screw of the rotating shaft moving shaft 194, the cylindrical pin 190 screwed to the screw of the rotating shaft moving shaft 194.
The position of the cylindrical pin 190 is moved upward or downward in a desired direction via the screw hole 192. At this time, the stopper member 200 is supported swingably with respect to the frame 88L, and the cylindrical pin 190
Is rotatably inserted into the hole 186 of the block 184, so that the rotating shaft moving shaft 194 can be easily rotated at that position with a light operating force without prying.

With any desired vertical movement of the cylindrical pin 190, the block 184 rotates together with the eccentric bush 180L about the center position Ob of the outer diameter of the eccentric bush 180L. This eccentric bush 18
The rotation of 0L is achieved by the bearing 182 in the eccentric bush 180L.
The height position of the snubber shaft 74, which is a rotating shaft supported via the shaft, is changed to a desired direction. This snubber shaft 7
The amount of change in the height position of 4 is easily numerically measured by the position where the pointed tip of the pointer 202 points to the scale of the plate gauge 204 facing the same. At this time, the pointed tip of the angle pointer 210 is opposed to the graduated disk 208 with the scale.
, The angular position of the snubber 110 with respect to the reference, that is, the position of the pressing brush 94 can be numerically detected. For example, assuming that the angle of the horizontal position of the key 112 of the snubber 110 at the position shown in FIG. 1 is a reference angle position Na, as shown in FIG. By measuring a certain angle θ, the key 1 of the snubber 110 can be measured.
Twelve points can be detected. In FIG. 7, the scaled disk 208 is used, but an encoder may be used.

Further, the snubber 110 which is a sheet pressing means in accordance with a change in the height position of the snubber shaft 74 which is a rotating shaft.
The height can be moved while the printing press is in operation, so that the printing press does not need to be stopped and the work is easy.In addition, the speed can easily be reduced to a speed suitable for the low-speed belt, and the occurrence of sheet buckling etc. Can be prevented. Accordingly, the force for pressing the sheet S by the snubber 110 can be easily applied from the outside, so that the length of the pressing brush 94 can be easily adjusted, and the sheet S can be easily adjusted.
Dirt and dents can be prevented. In addition, the snubber 110 that holds the sheet S against the lower low-speed belt 40 has a height that can be freely moved in the vertical direction by the rotating shaft height moving means 220, so that the snubber roller 78 or the pressing brush 94 can be easily used. The applied pressing force can be adjusted.

Next, FIG. 6 shows the rotating shaft height moving means 220 of the snubber shaft 74 attached to the frame 88R on the other end side (the pulley 90 side of the driving device) as described above. The structure is the same as that of the rotating shaft height moving means 220 of the snubber shaft 74 attached to the frame 88L on the side, but the end of the snubber shaft 74 is disposed up to the outside of the frame 88R and is driven to a position outside the frame 88R. Device pulley 90
The difference is that is attached. In addition, since the pulley 90 of the driving device is attached to the outer position, the length of the eccentric bush 180R is increased to easily receive the driving force acting on the pulley 90, and the eccentric bush 180R
Is different from the first embodiment in that a reinforcing bracket 214 is provided on the outside. The operation is performed by the frame 88 at one end in FIG.
L for moving the height of the rotation axis of the snubber shaft 74 attached to the L
20 and the detailed description is omitted.

[0047]

As described above, according to the present invention, the trailing edge of the sheet supplied from the high-speed transport means to the low-speed transport means is transferred to the low-speed transport means by the rotating sheet pressing means attached to the rotating shaft. In the sheet reduction device of a printing press sheeter that presses and reduces the speed to the transport speed of the low-speed transport unit, the sheet pressing unit is movably provided along the longitudinal direction of the attached rotating shaft, so that from the start of paper feeding. Even if the position of the sheet shifts in the paper width direction after a short time (about 20 mm), the snubber can be moved according to the amount of the shift and the sheet can be pressed at the best position with respect to the paper width. And less bite,
High-speed operation is also possible, improving work efficiency. This movement of the snubber can be performed during the operation of the printing press, so that the printing press does not need to be stopped, so that the adjustment is easy and the work is easy. In addition, even if the sheet edge is broken or jamming occurs when the sheet is taken out, the snubber can be easily moved, so that the maintenance becomes easy and the restart can be performed quickly. Further, since the pressing means moving operation section for moving the sheet pressing means in the longitudinal direction of the rotation axis is provided near the upper portion of the frame, the operability is improved and the work of adjusting the sheet pressing force can be easily performed. The effect is obtained.

The rotating shaft to which the sheet pressing means is attached is movably provided in the vertical direction by the rotating shaft height moving means, so that the pressing force applied to the sheet can be easily and appropriately adjusted according to the material of the sheet, the traveling speed and the like. Therefore, it is possible to reliably prevent the occurrence of buckling or the like when the sheet collides with the speed reduction roller, and it is possible to increase the speed of the printing press. Further, since the movement of the height of the sheet pressing means can be separately performed on the left and right sides of the sheet in the paper width direction, a minute pressing force of the sheet can be set by adjusting the length of the brush protruding in the width direction,
Dirt and indentation of the sheet can be prevented. Further, since the height of the sheet pressing means can be moved by the operation unit provided outside the frame, an excellent effect that the work can be easily performed is obtained.

[Brief description of the drawings]

FIG. 1 is a partially enlarged side view of a printing press theta according to an embodiment of the present invention.

FIG. 2 is a partial plan development view (FIG. 1 plan development view) of a sheeter for a printing press according to an embodiment of the present invention.

FIG. 3 is a sectional view of a handle portion of the present invention.

FIG. 4 is a partially enlarged side view of the height moving means of the present invention.

FIG. 5 is a partial front sectional view of a height moving means on one end side of a frame according to the present invention.

FIG. 6 is a partial front sectional view of the height moving means on the other end side of the frame according to the present invention.

FIG. 7 is an explanatory view of a graduated disk and an angle pointer. (Viewed from arrow W in FIG. 5),

FIG. 8 is a configuration diagram showing a conventional transport unit.

FIG. 9 is a partially enlarged view of a conventional transport unit, showing a sheet pressing unit.

FIG. 10 is a partially enlarged view of a conventional conveying unit, and is a diagram illustrating a relationship between a sheet pressing unit and a roll.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Conveying part 12 High speed conveying part 14 Low speed conveying part 18 Lower high speed belt device 20 Lower low speed belt device 22 Upper holding belt device 28 Lower high speed belt 40 Lower low speed belt 66, 68 Arm 70, 70A, 110 Snubber (sheet pressing means) 72 Reduction roll (squaring roll) 74 Snubber shaft (rotating shaft) 88 Frame 92 Bracket 94 Pressing brush 96 Rectangular block assembly 112 Key 118 Cam follower 120 Cam roller 122 L-shaped bracket 124 Moving plate 128, 130 Guide rod 132 Attachment Bracket 134 Nut 136 Operating shaft 138 Shaft bush 140 Bevel gear 142 Thrust bearing 144 Stopper member 150 Block 152 Drive bevel gear 154 Drive shaft 156 Handle 160 Stopper bolt member 162 Stopper bracket 164 Stopper bolt 180 Eccentric bush 184 Block 190 Pin 194 Rotation axis movement shaft 194a Rotation axis movement handle 200 Stopper member 202 Pointer 204 Plate gauge

Claims (5)

[Claims] 1. A trailing edge portion of a sheet supplied from a high-speed conveying means to a low-speed conveying means is pressed against the low-speed conveying means by a sheet pressing means which is attached to a rotating shaft and rotates, thereby reducing the conveying speed of the low-speed conveying means. A sheet speed reduction device for a printing press sheeter, wherein the sheet pressing means is provided movably along a longitudinal direction of an attached rotation shaft. 2. The method according to claim 1, wherein the trailing edge of the sheet supplied from the high-speed conveying means to the low-speed conveying means is pressed against the low-speed conveying means by a sheet pressing means which is attached to a rotating shaft and rotates. A sheet reduction device for a sheeter for a printing press, wherein the rotation axis for attaching the sheet pressing means is provided movably in a vertical direction by a rotation axis height moving means. Reduction gear. 3. The sheet pressing means is provided so as to be movable along the longitudinal direction of the attached rotary shaft even during the operation of transferring the sheet at a reduced speed from the high speed conveying means to the low speed conveying means. The sheet reduction device for a printing press theta according to claim 1 or 2, wherein 4. The apparatus according to claim 1, wherein the rotating shaft height moving means is configured to transfer the sheet from the high-speed conveying means to the low-speed conveying means at a reduced speed.
3. The sheet reduction device for a printing press theta according to claim 2, wherein the vertical height of the rotation shaft moves. 5. A sheet pressing means for moving a sheet from a high-speed conveying means to a low-speed conveying means at a reduced speed along a longitudinal direction of a rotating shaft by a pressing means moving operation portion disposed near an upper portion of a frame. Move and / or
The sheet reduction device for a printing press sheeter according to any one of claims 1 to 4, wherein the height in the up-down direction is moved by a rotation shaft height movement operation unit disposed near an upper portion of the frame.