JP2008094586A - Paper registering apparatus, and paper ejecting device and sheet-fed press using the apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper registering apparatus for improving paper registering performance of a stacking sheet, by increasing the frequency for pressing the sheet. <P>SOLUTION: A width directional paper registering apparatus 35 is arranged on both sides in the advancing direction of an ejecting sheet 9, and registers a width directional position when stacking the sheet 9, and is characterized by having a rear holding part 55 movably arranged in the width direction B to a frame, a size changing mechanism 53 of moving the rear holding part 55 in the width direction B, a rear registering plate part 57 movably installed in the width direction B on the sheet 9 side of the rear holding part 55, and a rear registering plate vibrating mechanism 59 of approaching and separating the rear registering plate part 57 to the sheet 9 in the predetermined timing. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a paper aligning device, a paper discharge device using the same, and a sheet-fed printing press.

In a sheet discharge device of a sheet-fed printing machine, a sheet printed by a printing unit is conveyed by a chain gripper claw device, removed from above the sheet discharge table, dropped, and stacked on the sheet discharge table.
At this time, the falling sheets are stacked in the aligned state in the front-rear and left-right positions.
As an example of aligning this position, there is a paper aligning device that aligns the position of the sheet in the width direction as disclosed in Patent Document 1, for example.
In this method, paper aligning plates are arranged on both sides of the sheet in the width direction, and the paper aligning plates are periodically reciprocated in the width direction to align the sheet in the width direction.
This paper aligning device is provided with a size changing mechanism that adjusts the position of the paper aligning plate in the width direction in response to the sheet size change, and a swing mechanism that periodically moves the paper aligning plate back and forth toward the sheet. ing.
The size adjusting mechanism is positioned so that the paper aligning plate contacts the side of the sheet according to the size of the sheet, and the paper aligning plates on both sides are periodically reciprocated by the swing mechanism (the operation width is about 10 mm, for example). Thus, the both side positions of the sheet are aligned by hitting both sides of the sheet.

JP-A-9-58920

However, the one disclosed in Patent Document 1 is configured such that the swing mechanism swings the entire paper size changing mechanism, paper aligning plate, and the like, so that the inertial mass that swings is large. For this reason, it is difficult to swing the paper aligning plate at high speed, and there is a limit to shortening the swing cycle.
As described above, if the swing period cannot be shortened, the number of times of pressing the falling sheet by the paper aligning plate cannot be increased, and there is a limit to improving the paper aligning performance.

  In view of the above problems, the present invention provides a paper aligning device that increases the number of times the sheet is pressed and improves the paper aligning performance of the stacked sheets, a paper discharge device using the same, and a sheet-fed printing press. Objective.

In order to solve the above problems, the present invention employs the following means.
That is, the paper aligning device according to the present invention is a paper aligning device that is arranged on both sides in the traveling direction of the discharged sheets and aligns the position in the width direction when the sheets are stacked, A moving member movably provided in the width direction; a moving means for moving the moving member in the width direction; and a pressing member attached to the sheet side of the moving member so as to be movable in the width direction. And contacting / separating means for moving the pressing member toward and away from the sheet at a predetermined timing.

In the paper aligning device according to the present invention, when the width of the sheet is changed, the moving unit is operated, the moving member is moved in the width direction of the sheet, and the position of the pressing member is moved to a position where it abuts on both sides of the sheet. . In this state, when the pressing member is moved closer to and away from the width direction of the sheet by the contact / separation means, the pressing member presses the sheet to be discharged, and the position in the width direction is aligned.
As described above, since only the pressing member is vibrated to push the sheet, the inertial mass of the portion to be vibrated can be remarkably reduced as compared with the conventional one that vibrates the whole.
If the inertial mass of the portion to be vibrated can be reduced, the period of vibration can be shortened, so that the number of times the sheet discharged by the pressing member is pushed in the width direction can be increased.
Thereby, the paper alignment performance in the width direction of the sheet can be improved.

  In the paper aligning device according to the present invention, the contact / separation means includes an elastic member that elastically biases the pressing member toward the sheet, and the pressing member is pressed in a direction away from the sheet. Position restricting means for restricting movement of the pressing member toward the sheet and for moving the restricting position toward and away from the sheet at a predetermined timing is provided.

In the paper aligning device according to the present invention, since the pressing member is constantly urged toward the sheet by the elastic member, the pressing member approaches the sheet by moving the restriction position by the position restricting means closer to or away from the sheet. Can be separated.
At this time, since the position restricting means presses the pressing member in the direction away from the sheet, the force for urging the pressing member toward the sheet is only the elastic force by the elastic member. Therefore, for example, even if an object is sandwiched between the stacked sheets and the pressing member so that the pressing member does not move to the sheet side, only the elastic force by the elastic member acts on the pressing member. An unreasonable force does not act on the pushing member. For this reason, a possibility that a pushing member may be damaged can be prevented.

In the above-mentioned invention, it is preferable that the position restricting means causes the restricting position to approach and separate from the sheet by a cam member that is rotationally driven.
If it does in this way, a push member can be periodically moved away from a sheet only by rotating a cam member.

  Further, in the paper aligning device according to the present invention, the moving means is attached to the moving member so that the moving member extends in the width direction, and the position is substantially fixed in the width direction. A pinion that meshes with the rack and drive means that rotationally drives the pinion are provided.

  In the paper aligning device according to the present invention, when the pinion is rotated by the driving means, the rack with which the pinion is engaged moves in the width direction, and the position of the moving member in the width direction can be adjusted. Thereby, since the position in the width direction of the pressing member attached to the moving member can be adjusted, the position in the width direction of the pressing member can be adjusted corresponding to the change in the sheet size.

  In the paper aligning device according to the present invention, a plurality of sets of the moving member and the pressing member are provided along the traveling direction, and at least one of the plurality of sets of the moving member and the pressing member is the The position of the advancing direction is comprised so that adjustment is possible, It is characterized by the above-mentioned.

As described above, since a plurality of sets of the moving member and the pressing member are provided along the traveling direction of the sheet, the sheet can be pressed in the width direction at a plurality of locations along the traveling direction.
This increases the number of times and the range of pressing in the width direction of the sheet, and is detachably attached to the support member, so that the sheet alignment performance in the width direction of the sheet can be further improved.
In addition, since at least one of the plurality of sets of moving members and pressing members is configured to be able to adjust the position in the traveling direction, it can cope with the change in the length along the traveling direction of the sheet.

  Further, in the paper aligning device according to the present invention, the moving member and the pressing member on the most downstream side of the plurality of sets of the moving member and the pressing member are configured by fixing a position in the traveling direction, The moving member and the pushing member on the upstream side are attached to a vacuum suction wheel device.

For example, in a sheet discharge device of a sheet-fed printing press, a vacuum suction wheel device having a vacuum suction wheel that applies a brake to the upstream end of the sheet, with the downstream position of the discharged sheet being constant regardless of the length of the sheet Is provided.
The vacuum suction wheel device is configured to move correspondingly when the length of the sheet is changed, and to adjust the position of the vacuum suction wheel in the traveling direction of the sheet.
In the paper aligning device according to the present invention, since the most upstream moving member and pushing member are attached to the vacuum suction wheel device, the traveling direction of the sheet with the movement of the vacuum suction wheel corresponding to the change in the length of the sheet Moved to.
Thus, since the most upstream moving member and pushing member are moved by the vacuum suction wheel device that maintains a substantially constant positional relationship with the upstream end of the sheet, the most upstream pushing member need not be adjusted. It is located in a substantially constant positional relationship with the upstream end of.
Further, means for moving and adjusting the position of the most upstream moving member and pushing member can be omitted.
Furthermore, since the most downstream moving member and the pressing member are provided with the position in the sheet traveling direction fixed, the most downstream pressing member is positioned in a substantially constant positional relationship with the downstream end of the sheet.
Therefore, for example, when there are two sets of the moving member and the pressing member, the means for moving them and the means for adjusting them can be omitted.
Thus, since the upstream end portion and the downstream end portion of the sheet (that is, both sides of the sheet center in the sheet traveling direction) are pressed by the pressing member, the moment to rotate in the plane does not act on the sheet. For this reason, the paper alignment performance in the width direction of the sheet can be improved.

  In the paper aligning device according to the present invention, each of the moving members has a rack attached to the moving member so as to extend in the width direction as the moving means, and a position in the width direction is substantially fixed. A pinion that is attached and meshes with the rack, and a common drive unit that rotates all the pinions in common, and the common drive unit includes a drive shaft to which all the pinions are attached and the progression The pinion that meshes with the rack of the moving member that is configured to be able to adjust the position in the direction is attached so as to be movable along the drive shaft.

In the paper aligning device according to the present invention, when the drive shaft of the common drive means is rotated, all the pinions engaged with the drive shaft are rotated, so that all the racks engaged with them are arranged in the width direction. Will move. Thereby, since all the moving members can be moved in the width direction, the width direction position of all the pressing members can be adjusted to cope with the change in the width direction dimension of the sheet.
In addition, since the pinion that meshes with the rack of the moving member that is configured to be able to adjust the position in the traveling direction is mounted so as to be movable along the drive shaft, it is affected even if the traveling direction dimension of the seat is changed. Therefore, it is possible to cope with a change in the width dimension of the sheet.

Moreover, in the said invention, it is suitable for the cross-sectional shape of the said drive shaft to be polygonal shape.
In this way, the pinion can move along the drive shaft and is rotated integrally with the drive shaft by the polygonal projection, so that it is possible to eliminate the need for forming a groove like a key structure, for example.
For example, in a sheet discharge device of a sheet-fed printing press, powder powder is sprayed to prevent show-through on a sheet, but if a groove is not formed, the powder powder accumulates in the groove and the pinion moves along the drive shaft. The fear of hindering movement can be prevented.

  Further, the paper discharge device according to the present invention uses the paper aligning device according to any one of claims 1 to 8.

  According to the paper discharge device of the present invention, since the paper aligning device that can increase the number of times of pressing the sheet in the width direction and improve the paper aligning performance in the width direction of the sheet is used, the sheet is aligned in the width direction. They can be stacked and sent to the next process.

  A sheet-fed printing press according to the present invention is characterized by using the paper discharge device according to claim 9.

  According to the sheet-fed printing press according to the present invention, since the sheet aligning device that can increase the number of times of pressing the sheet in the width direction and improve the sheet aligning performance in the width direction of the sheet is used, Can be stacked and sent to the next process.

According to the present invention, since the sheet is pushed by vibrating only the push member, the number of times of pushing the discharged sheet in the width direction can be increased.
Thereby, the paper alignment performance in the width direction of the sheet can be improved.

Hereinafter, the sheet-fed printing press 1 concerning one Embodiment of this invention is demonstrated using FIGS.
FIG. 1 is a schematic diagram illustrating an overall schematic configuration of the sheet-fed printing press 1.
The sheet-fed printing machine 1 includes a sheet feeding device 3 that supplies stacked sheets along a traveling direction L in which sheets to be printed are supplied, and a plurality of, for example, printing different colors to realize color printing. Printing unit 5 and a paper discharge device 7 for placing printed sheets in a stacked state.

The sheet feeding device 3 picks up and supplies the sheets 9 stacked on the sheet feeding table 11 one by one from the top by a sheet feeding mechanism (paper suction, cam, etc.) not shown.
The paper feed tray 11 is configured to move up in response to the supply of the sheet 9 so that the paper feed mechanism maintains a substantially constant positional relationship with the sheet 9.

  A plurality of printing units 5 are provided for each color to be printed. In this embodiment, for example, a four-color machine that prints with four different colors such as C (cyan), M (magenta), Y (yellow), and BL (black) is shown. Is provided.

The printing unit 5 includes a plate cylinder 13, a blanket cylinder 15, an impression cylinder 17, and an intermediate cylinder 19.
The plate cylinder 13, the blanket cylinder 15, and the impression cylinder 17 are arranged so as to contact each other in this order from top to bottom.
The plate cylinder 13 is equipped with a printing plate for forming a printed image on the peripheral surface. Although not shown, an inking device that supplies ink to the image line portion of the printing plate and a dampening device that supplies dampening water to the non-image line portion are provided around the plate cylinder 13.

The blanket cylinder 15 is provided with a blanket made of an elastic material on the peripheral surface.
The blanket cylinder 15 transfers the printed image formed on the printing plate from the plate cylinder 13 and transfers it to the sheet 9.
The impression cylinder 17 is so-called double cylinder finishing having a diameter twice that of the plate cylinder 13 and the blanket cylinder 15.
On the peripheral surface of the impression cylinder 17, claw devices (not shown) for holding the front end of the sheet 9 are provided at two locations across the axis center.

The intermediate cylinder 19 is disposed on the upstream side of the impression cylinder 17 so as to be in contact therewith, and adopts a so-called double cylinder finishing structure having a diameter twice that of the plate cylinder 13 and the blanket cylinder 15. . The intermediate cylinder 19 is provided with claw devices (not shown) at two locations, like the impression cylinder 17. The intermediate cylinder 19 is disposed so as to be in contact with the impression cylinder 17 (or the paper feeding device 3) of the upstream printing unit 5.
The sheet 9 is conveyed through each printing unit 5 by being changed over from the intermediate cylinder 19 to the impression cylinder 17 by each nail device.

The paper discharge device 7 includes a chain gripper 21 that conveys sheets, a paper discharge table 23 on which printed sheets are stacked, and a fan device 25 that forms a downward airflow in the vicinity of the paper discharge table 23.
The chain gripper 21 includes a pair of chains 27 that circulate between the position adjacent to the impression cylinder 17 of the most downstream printing unit 5 and the upper position of the paper discharge table 23, a holding bar that connects the chain 27, and a predetermined distance between the holding bars. And a claw device 29 installed with a gap therebetween, which receives the sheet 9 from the impression cylinder 17 of the printing unit 5 and conveys it to a predetermined position above the discharge table 23.

The paper discharge table 23 is suspended from a chain 31 and configured to be movable in the vertical direction.
The paper discharge table 23 holds the sheets 9 discharged from the chain gripper 21 in a stacked manner. As the sheets 9 are stacked, the height of the top surface of the uppermost stage rises. Therefore, the discharge table 23 is lowered continuously or stepwise so that the falling distance of the sheets 9 is substantially constant. It is controlled to move.
The fan device 25 is composed of a plurality of fans arranged in a substantially rectangular shape, and presses the sheet 9 discharged from the chain gripper 21 above the discharge table 23 downward by an air current.

  A plurality of (for example, six) paper pads 33 for restricting the downstream (front) position in the traveling direction L of the sheet 9 and a width direction are provided above the discharge table 23 and below the chain gripper 21. A width direction paper aligning device (paper aligning device) 35 that aligns the positions of the sheets 9 in B (direction orthogonal to the traveling direction L), a vacuum suction wheel device 37 that brakes the traveling speed and controls the posture when the sheet 9 falls. A rear sheet aligning device 39 that regulates the upstream (rear) position in the traveling direction L of the sheet 9.

The lower portions of the plurality of paper pads 33 are connected by a shaft 41 extending in the width direction B that reciprocates around an axis by an electric motor (not shown).
The paper pad 33 is configured to swing in the traveling direction L (left-right direction in FIG. 1) by the reciprocating rotation of the shaft 41.
The vacuum wheel device 37 is disposed extending in the width direction B, and a vacuum suction wheel 43 that brakes the sheet 9 by applying a suction force to the upstream end portion of the sheet 9, and the vacuum suction wheel 43 is rotatable. A vacuum wheel support portion 45 that is supported by the frame so as to be movable in the advancing direction L, and suction means such as a pump (not shown) that applies a suction force to the vacuum suction wheel 43 are provided.
Each of the rear paper alignment devices 39 is attached to the vacuum wheel support portion 45 and includes a plurality of plate-like bodies extending in the vertical direction.

The width direction paper aligning device 35 will be described with reference to FIGS.
FIG. 2 is a plan view showing the upper part of the paper discharge tray 23. FIG. 3 is a plan view showing a part of the width direction paper aligning device 35. FIG. 4 is a plan view showing the rear alignment portion. 5 is a cross-sectional view taken along the line XX of FIG. 4, and FIG. FIG. 7 is a plan view showing the front alignment portion. 8 is a ZZ cross-sectional view of FIG. 7, and FIG. 9 is a V view of FIG. FIG. 10 is a WW sectional view of FIG. 11 is a cross-sectional view taken along the line TT in FIG.

In the width direction sheet aligning device 35, the left sheet aligning portion 47a that aligns the left sheet position in the advancing direction having the same structure and is arranged symmetrically across the sheet 9, and the right sheet position in the advancing direction are aligned. And a right side paper aligning section 47b (see FIG. 2).
Since the left paper alignment unit 47a and the right paper alignment unit 47b have the same structure, the left paper alignment unit 47a will be described below.
The left-side paper alignment unit 47a and the right-side paper alignment unit 47b are distinguished from each other by adding suffixes “a” and “b” after the reference numerals.
That is, “a” indicates a part or member of the left side paper aligning part 47a, and “b” indicates a part or member of the right side paper aligning part 47b. In the following description and drawings, a and b are added to distinguish the left side paper aligning portion 47a and the right side paper aligning portion 47b, but unless otherwise distinguished, a and b are omitted. Each part and member shall be shown.

The left-side paper alignment unit 47a corresponds to the rear alignment unit 49 that aligns the width direction B position on the back side of the sheet 9, the front alignment unit 51 that aligns the width direction B position on the front side of the sheet 9, and the size of the sheet 9. And a size changing mechanism (moving means) 53 that changes the position in the width direction B of the rear aligning portion 49 and the front aligning portion 51 (see FIG. 3).
The rear alignment portion 49 includes a rear holding portion (moving member) 55, a rear alignment plate portion (pushing member) 57, and a rear alignment plate vibration mechanism (contact / separation means) 59. (See Figure 4)

The rear holding portion 55 includes a holding main body portion 61 that is a substantially rectangular plate member, and a pair of inner sides that are substantially rectangular parallelepipeds provided so as to protrude upward on both inner side (sheet side) ends of the holding main body portion 61. The guide portion 63 and a pair of outer guide portions 65 each having an L-shaped cross section in plan view provided so as to protrude upward from both ends (in the direction away from the sheet) of the holding main body portion 61.
The pair of outer guide portions 65 are provided such that the long sides of the L-shape are opposed to each other and extend in the width direction, and the short sides extend from the inner ends of the long sides to the front or the rear, respectively. It is provided to do.

The rear alignment plate portion 57 is provided with a rear alignment plate 67, a rear mounting plate 69, a pair of guide rods 71, and a non-regulating portion 73.
The rear aligning plate 67 is a plate-like body having a substantially rectangular lower surface center portion cut out in a trapezoidal shape, and an upper portion thereof is bent outward. The rear aligning plate 67 is provided with a plurality of (for example, four) large holes 75 penetrating in the longitudinal direction. (See Figure 6)
The rear mounting plate 69 is a substantially rectangular plate that is slightly smaller than the rear alignment plate 67, and is arranged in parallel with the rear alignment plate 67 at a predetermined interval. The rear alignment plate 67 and the rear mounting plate 69 are fixedly mounted by mounting members 77 on both lower sides.

The pair of guide rods 71 are disposed so as to extend in the width direction, and one end thereof is fixed to the outer surface of the rear mounting plate 69.
Each guide rod 71 is slidably guided to the inner guide part 63 and the short side part of the outer guide part 65, respectively.
The non-regulating portion 73 is provided with a holding rod 79 and a cylindrical roller 81.
The holding bar 79 is a bar having a rectangular cross section, and the inner end is fixed to the rear mounting plate 69 and is disposed so as to extend in the width direction. A notch 83 is formed penetrating vertically from the outer end of the holding rod 79 toward the inner side.
The cylindrical roller 81 is attached to the outer end portion of the notch 83 so that the axis is substantially along the traveling direction L.

The rear aligning plate vibration mechanism 59 includes a pair of compression springs (elastic members) 85, an electric motor 87, a speed reducer 89, and an eccentric cam (position regulating means, cam member) 91.
The compression spring 85 is extrapolated to the guide rod 71 and is interposed between the short side portion of the outer guide portion 65 and the intermediate projection portion of the guide rod 71 so as to bias the guide rod 71 inward (seat side). Has been.
The reduction gear 89 is attached to an attachment plate 93 fixed to the front outer end of the holding body 59 so that the output shaft 95 extends in the traveling direction L.
The electric motor 87 is attached to the front side of the speed reducer 89.

The output shaft 95 passes through the notch 83 of the holding rod 79 and is rotatably supported by the long sides of the pair of outer guides 65.
The eccentric cam 91 has a cylindrical shape and is provided at a portion of the output shaft 95 positioned at the notch 83 of the holding rod 79. The axis center of the eccentric cam 91 is attached at a predetermined distance, for example, 0.5 mm, from the axis center of the output shaft 95.
The outer end of the eccentric cam 91 is configured to engage with the inner end of the cylindrical roller 81.

  The front alignment portion 51 includes a front holding portion (moving member) 101, a front alignment plate portion (pushing member) 103, and a front alignment plate vibration mechanism (contact / separation means) 105. (See Figure 7)

The front holding portion 101 is a pair of inner sides each having a substantially rectangular parallelepiped shape provided so as to protrude upward from the holding main body portion 107 which is a substantially rectangular plate member and both inner side (sheet side) ends of the holding main body portion 107. The guide portion 109 and a pair of outer guide portions 111 each having an L-shaped cross section in plan view provided so as to protrude upward at both ends of the holding body portion 107 (in the direction away from the sheet).
The pair of outer guide portions 111 are provided such that the long sides of the L-shape are opposed to each other and extend in the width direction, and the short sides respectively extend forward or backward from the inner ends of the long sides, respectively. It is provided to do.

The front aligning plate portion 103 includes a front aligning plate 113, a front mounting plate 115, a pair of guide rods 117, and a non-regulating portion 119.
The front aligning plate 113 is a plate-like body having a shape in which both sides of a substantially rectangular shape are cut out into a large rectangular shape and a lower central portion is cut into a small rectangular shape, and the upper portion is bent outward. Yes. In the central portion of the front aligning plate 113, a plurality of (for example, two) large through holes 121 are provided in the longitudinal direction. (See Figure 9)
The front mounting plate 115 is a plate-like body having a substantially rectangular shape that is slightly smaller than the front alignment plate 113, and is arranged in parallel with the front alignment plate 113 with a predetermined interval. The front aligning plate 113 and the front mounting plate 115 are fixedly mounted by mounting tools 123 on both lower sides.
A swing plate 114 is attached to the lower portion of the center portion of the front mounting plate 115 so as to be swingable in the vertical direction within the plane. The inner end surface of the swing plate 114 is substantially at the same position as the inner end surface of the front aligning plate 113.

The pair of guide rods 117 are arranged so as to extend in the width direction, and one end thereof is fixed to the outer surface of the front mounting plate 115.
Each guide rod 117 is slidably guided to the inner guide portion 109 and the short side portion of the outer guide portion 111, respectively.
The non-restricting portion 119 is provided with a holding rod 125 and a cylindrical roller 127.
The holding bar 125 is a bar having a rectangular cross section, and the inner end is fixed to the front mounting plate 115 and is arranged to extend in the width direction. A cutout portion 129 that penetrates up and down from the outer end of the holding rod 125 to the inside is formed.
The cylindrical roller 127 is attached to the outer end portion of the notch portion 129 so that the axis is substantially along the traveling direction L.

The front aligning plate vibration mechanism 105 includes a pair of compression springs (elastic members) 131, an electric motor 133, a speed reducer 135, and an eccentric cam (position restricting means, cam member) 137.
The compression spring 131 is extrapolated to the guide rod 117 and is interposed between the short side portion of the outer guide portion 111 and the intermediate projection portion of the guide rod 117 so as to bias the guide rod 117 inward (seat side). Has been.
The reducer 135 is attached to an attachment plate 139 fixed to the front outer end of the holding body 105 so that the output shaft 141 extends in the traveling direction L.
The electric motor 133 is attached to the front side of the speed reducer 135.

The output shaft 141 passes through the notch 129 of the holding rod 125 and is rotatably supported by the long sides of the pair of outer guides 111.
The eccentric cam 137 has a cylindrical shape and is provided at a portion of the output shaft 141 located at the notch 129 of the holding rod 125. The axis center of the eccentric cam 137 is attached with a predetermined distance, for example, 0.5 mm, from the axis center of the output shaft 141.
The outer end of the eccentric cam 137 is configured to engage with the inner end of the cylindrical roller 127.

The size changing mechanism 53 includes a rear rack (rack) 143, a front rack (rack) 145, a rear pinion (pinion) 147, a front pinion (pinion) 149, a drive shaft (drive shaft) 151, and electric A motor 153 and a speed reducer 155 are provided.
The drive shaft 151 is rotatably supported by a front main body 157 and a rear attachment member 159 that are fixedly attached to the frame.
The drive shaft 151, the electric motor 153, and the speed reducer 155 constitute common drive means of the present invention.
A cross-sectional shape of an intermediate portion of the drive shaft 151 (a range from the front main body 157 to the rear mounting member 159) is a substantially regular hexagon.

The speed reducer 155 is attached to an attachment plate 161 fixed to the front side of the front main body 157 so that an output shaft connected to the drive shaft 151 extends in the traveling direction L.
The electric motor 153 is attached to the front side of the speed reducer 155.
The front pinion 149 is attached to the drive shaft 151 so as not to move in the axial direction.
The front rack 145 is disposed so as to mesh with the front pinion 149 and extend in the width direction, and is slidably held by the front main body 157.
An inner portion of the front rack 145 is fixed to the lower surface of the holding main body portion 107 and is configured to move in the width direction B integrally with the front alignment portion 51.

The rear pinion 147 is attached to the drive shaft 151 so as to be movable in the axial direction, and is supported by the movable holding member 163 so as to be rotatable.
The rear rack 143 is disposed so as to mesh with the rear pinion 147 and extend in the width direction, and is slidably held by the movable holding member 163.
An inner portion of the rear rack 143 is fixed to the lower surface of the holding main body portion 61 and is configured to move in the width direction B integrally with the rear alignment portion 49.
The movement holding member 163 is fixed to the vacuum wheel support part 45 and is configured to move in the movement direction L as the vacuum wheel support part 45 moves in the movement direction L.

The operation of the sheet-fed printing press 1 according to the above-described embodiment will be described.
First, the printing operation of the sheet-fed printing press 1 will be described.
The sheets 9 stacked on the paper feed tray 11 of the paper feed device 3 are taken out one by one from the top by a paper feed mechanism (not shown) and supplied to the printing unit 5.
The sheet 9 supplied to the printing unit 5 is held by the nail device of the intermediate cylinder 19 of the printing unit 5, and then transferred from the intermediate cylinder 19 to the impression cylinder 17. This is repeated and conveyed through the four printing units 5.

In each printing unit 5, water is supplied from the dampening device to the non-image area of the printing plate attached to the peripheral surface of the plate cylinder 13, and then ink is supplied from the ink supply device to the image area of the printing plate. .
The printed image on the printing plate thus obtained is transferred to the blanket cylinder 15.
The printed image transferred to the blanket cylinder 15 is transferred to the sheet 9 conveyed by the impression cylinder 17 and printing of one color is performed.
This is repeated in each printing unit 5 for color printing.

The color-printed sheet 9 is replaced by the nail device 29 of the chain gripper 21 from the impression cylinder 17 of the last printing unit 5.
The sheet 9 conveyed by the claw device 29 is removed from above the sheet discharge table 23, dropped, and stacked on the sheet discharge table 23.
At this time, in order to prevent undried ink from appearing on the back of the upper sheet 9, powder is sprayed on the sheet 9 in advance when it is conveyed by the nail device 29.

Next, the stacking operation of the sheets 9 on the paper discharge tray 31 will be described.
The positions of the vacuum suction wheel 43, the rear paper aligning device 39, and the width direction paper aligning device 35 (the left paper aligning portion 47a and the right paper aligning portion 47b) are adjusted according to the size of the sheet 9 to be discharged. For example, it is assumed that the position is indicated by a solid line in FIG.
In this state, the vacuum suction wheel 43 is rotated at a predetermined speed and a pump (not shown) is operated to apply the adjusted suction force.

Further, the electric motors 87 and 133 are operated. Thereby, since the output shafts 95 and 141 rotate via the speed reducers 89 and 135, the eccentric cams 91 and 137 rotate.
When the eccentric cams 91 and 137 rotate, the position of the outer end portion of the eccentric cams 91 and 137 moves between the outer position and the inner position every rotation. Since this moving amount is twice the eccentric amount (0.5 mm), it is approximately 1 mm.
As described above, when the outer end portions of the eccentric cams 91 and 137 move, the positions at which the eccentric cams 91 and 137 restrict the inward movement of the cylindrical rollers 81 and 127 periodically move in the width direction. Become.

As the cylindrical rollers 81 and 127 move, the rear aligning plate 67 and the front aligning plate 113 move in the width direction B as shown by the solid line and the thin two-dot chain line in FIG. 2 (amplitude A (approximately 1 mm)). Will vibrate).
At this time, the movement of the cylindrical rollers 81 and 127 to the outside is forcibly performed by the eccentric cams 91 and 137 against the force of the compression springs 85 and 131, while the movement to the inside is forced by the force of the compression springs 85 and 131. Is done by.

When the above-described printing operation is performed in this state, the sheet 9 that has been removed from the nail device 29 of the chain gripper 21 has its rear end portion sucked and braked by the vacuum suction wheel 43 and dropped while slowly moving. To do. The front end of the sheet 9 abuts against the abutting plate 33, the progress is stopped, and the position of the front end portion is aligned.
At the same time, since the rear alignment plate 67 and the front alignment plate 113 are pushed from both sides, the positions on both sides are aligned.
Then, the rear ends are guided and aligned by the rear sheet aligning device 39.

In this way, since only the rear aligning plate portion 57 and the front aligning plate portion 103 are vibrated and the sheet 9 is pushed, the vibration is made in comparison with the conventional one (including the size changing mechanism). The inertial mass of the portion can be significantly reduced.
If the inertial mass of the portion to be vibrated can be reduced, the period of vibration can be shortened, so that the number of times the sheet 9 discharged by the rear alignment plate 67 and the front alignment plate 113 is pushed in the width direction can be increased.
Thereby, the paper alignment performance in the width direction of the sheet 9 can be improved.

  Since the eccentric cams 91 and 137 press the rear aligning plate portion 57 and the front aligning plate portion 103 in the direction away from the sheet 9, the force that biases the rear aligning plate portion 57 and the front aligning plate portion 103 toward the sheet 9. Is only the elastic force of the compression springs 85 and 131. Therefore, for example, even if an object is sandwiched between the stacked sheets 9 and the rear alignment plate 67 and the front alignment plate 113 so that the rear alignment plate 67 and the front alignment plate 113 do not move to the sheet 9 side, Since only the elastic force of the compression springs 85 and 131 acts on the aligning plate 67 and the front aligning plate 113, an excessive force does not act on the rear aligning plate 67, the front aligning plate 113, and the like. For this reason, it is possible to prevent the rear alignment plate 67 and the front alignment plate 113 from being damaged.

  Further, since the rear end portion and the front end portion of the sheet 9 (that is, both sides of the center of the sheet 9 in the traveling direction of the sheet 9) are pushed by the rear alignment plate 67 and the front alignment plate 113, the sheet 9 is rotated in its plane. Moment does not work. For this reason, the paper alignment performance in the width direction of the sheet 9 can be improved.

Next, a response when the size of the sheet 9 to be printed is changed will be described.
As shown in FIG. 2, when the current work is changed from the solid line sheet 9 to the small two-dot chain line sheet 9, first, the vacuum suction wheel holding unit 45 is moved to the front side to position the vacuum suction wheel 43. Is moved to a predetermined position indicated by a two-dot chain line.
As the vacuum suction wheel holding part 45 moves to the front side, the rear paper aligning device 39 integrated with the vacuum suction wheel holding part 45 moves to a predetermined position.
At the same time, the movable holding member 163 moves forward along the drive shaft 151. By the movement of the movement holding member 163, the rear rack 143 and the rear pinion 147 move to the front side. As the rear rack moves, the rear aligning portion 49 moves forward, and the rear aligning plate 67 is positioned at a position where it engages with the rear end portion of the new sheet 9.

Thus, since the rear aligning portion 49 is moved by the vacuum suction wheel holding portion 45 that holds the vacuum suction wheel 43 that maintains a substantially constant positional relationship with the upstream end of the sheet 9, It is positioned in a substantially constant positional relationship.
Therefore, it is possible to omit means for moving and adjusting the position of the rear aligning portion 49 when the sheet size is changed.
Further, since the front aligning portion 51 is provided with a fixed position in the traveling direction of the sheet, it is always positioned in a substantially constant positional relationship with the front end of the sheet.
For this reason, in order to adjust the position of the rear alignment part 49 and the front alignment part 51 in the advancing direction, means for moving them and means for adjusting them can be omitted.

Next, when the electric motor 153 is operated and the drive shaft 151 is rotated via the speed reducer 155, the rear pinion 147 and the front pinion 149 rotate. At this time, the rear pinion 147 slidably attached to the drive shaft 151 is engaged with the corner portion of the drive shaft 151 and rotated.
Thus, since the drive shaft 151 is rotated integrally with the drive shaft 151 by the regular hexagonal protrusion, it is possible to eliminate the need to form a groove like a key structure.
If the groove is not formed, powder powder is sprayed to prevent the show-through on the sheet 9, but there is a risk of preventing the pinion 147 from moving along the drive shaft 151 after the powder accumulates in the groove. Can be prevented.

  When the rear pinion 147 and the front pinion 149 rotate, the rear rack 143 and the front rack 145 that are meshed with them move in the width direction B, so that the rear alignment portion 49 and the front alignment portion 51 move in the width direction. Thereby, the position in the width direction B of the rear alignment plate 67 and the front alignment plate 113 can be located at a predetermined position.

  As described above, when the drive shaft 151 is rotated, the rear pinion 147 and the front pinion 149 rotate, so that the rear rack 143 and the front rack 145 engaged with them move in the width direction B. Thereby, since the rear alignment part 49 and the front alignment part 51 can be moved in the width direction, the width direction B position of the rear alignment part 49 and the front alignment part 51 is adjusted to change the width direction dimension of the sheet 9. Can respond.

In the present embodiment, the cross-sectional shape of the drive shaft 151 is a regular hexagon. However, the present invention is not limited to this as long as it can realize a meshing structure capable of transmitting a rotational driving force.
For example, a quadrangle as shown in FIG. 12 or a convex polygon that is a triangle or more may be used.
Moreover, it is good also as a concave polygon as shown in FIG.
Furthermore, as shown in FIG. 14, the cross section may be circular, the keyway may be provided so as to extend in the axial direction, and the rear pinion 147 may be locked by the key 165. In this case, providing the key 165 over the entire length of the key groove on the drive shaft 151 side is effective in preventing powder powder from accumulating in the key groove.

Further, in the present embodiment, the position in the width direction B of the sheet 9 is aligned at two locations of the rear alignment plate 67 and the front alignment plate 113 along the traveling direction L, but this is aligned at three or more locations. It may be.
Furthermore, since the paper alignment performance in the width direction of the sheet 9 can be improved by minutely vibrating the alignment plate, the alignment plate may be aligned at one location.

  Further, the present invention is not limited to the present embodiment, and can be appropriately changed without departing from the gist of the present invention.

1 is a front view showing an overall schematic configuration of a sheet-fed printing press according to an embodiment of the present invention. It is a top view which shows the upper part of the paper discharge stand concerning one Embodiment of this invention. It is a top view which shows a part of paper aligning apparatus concerning one Embodiment of this invention. It is a top view which shows the back alignment part concerning one Embodiment of this invention. XX sectional view of FIG. FIG. 6 is a Y view of FIG. 5. It is a top view which shows the front alignment part concerning one Embodiment of this invention. ZZ sectional view of FIG. FIG. 10 is a V view of FIG. 8. It is WW sectional drawing of FIG. It is TT sectional drawing of FIG. It is a cross-sectional view which shows another embodiment of the drive shaft concerning one Example of this invention. It is a cross-sectional view which shows another embodiment of the drive shaft concerning one Example of this invention. It is a cross-sectional view which shows another embodiment of the drive shaft concerning one Example of this invention.

Explanation of symbols

1 sheet-fed printing machine 7 paper discharge device 9 sheet 35 width direction paper alignment device 53 size change mechanism 55 rear holding portion 57 rear alignment plate portion 59 rear alignment plate vibration mechanism 85, 131 compression spring 91, 137 eccentric cam 101 front holding portion 103 Front alignment plate portion 105 Front alignment plate vibration mechanism 143 Rear rack 145 Front rack 147 Rear pinion 149 Front pinion 151 Drive shaft B Width direction L Traveling direction

Claims (10)

A paper aligning device that is disposed on both sides in the traveling direction of discharged sheets and aligns the position in the width direction when the sheets are stacked,
A moving member provided to be movable in the width direction with respect to the frame;
Moving means for moving the moving member in the width direction;
A pressing member attached to the sheet side of the moving member so as to be movable in the width direction; and
Contacting / separating means for approaching and separating the pressing member from the sheet at a predetermined timing;
A paper aligning device comprising: The contact / separation means includes
An elastic member for elastically urging the pressing member toward the seat;
Position regulating means for regulating the movement of the pushing member to the sheet side by pushing the pushing member in a direction away from the sheet, and causing the regulating position to approach and separate from the sheet at a predetermined timing;
The paper aligning apparatus according to claim 1, further comprising:   3. The paper aligning apparatus according to claim 2, wherein the position restricting unit moves the restricting position closer to and away from the sheet by a cam member that is rotationally driven. The moving means includes
A rack attached to the moving member so as to extend in the width direction;
A pinion that is fixedly attached in the width direction and meshes with the rack;
Drive means for rotationally driving the pinion;
The paper aligning apparatus according to any one of claims 1 to 3, wherein the paper aligning apparatus is provided.   A plurality of sets of the moving member and the pressing member are provided along the traveling direction, and at least one of the plurality of sets of the moving member and the pressing member is configured to be capable of adjusting a position in the traveling direction. The paper aligning device according to claim 1, wherein the paper aligning device is provided. Of the plurality of sets of the moving member and the pressing member, the moving member and the pressing member on the most downstream side are configured by fixing the position in the traveling direction,
6. The paper aligning apparatus according to claim 5, wherein the moving member and the pressing member on the most upstream side are attached to a vacuum suction wheel device. Each of the moving members includes a rack attached to the moving member as the moving means so as to extend in the width direction, a pinion that is attached with a position substantially fixed in the width direction, and meshes with the rack, A common drive means for rotating all the pinions in common,
The common drive means includes a drive shaft to which all the pinions are attached, and the pinion that meshes with the rack of the moving member configured to be able to adjust the position in the traveling direction is along the drive shaft. The paper aligning device according to claim 5 or 6, wherein the paper aligning device is movably attached.   The paper aligning device according to claim 7, wherein the drive shaft has a polygonal cross-sectional shape.   A paper discharge device for a sheet-fed printing machine, wherein the paper aligning device according to any one of claims 1 to 8 is used.   A sheet-fed printing machine using the paper discharge device according to claim 9.

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