JPH0729065Y2 - Sheet feeder for sheet-fed printing press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a sheet-fed printing machine, in which a sheet positioned on a paper stack is sucked by a suction port of a sucker and supplied to a printing unit. The present invention relates to a paper device.

[Conventional technology]

In the sheet-fed printing press, the paper stacked on the paper tray of the paper feeding device is sucked one by one by the suction port of the sucker device and captured by the paper feeding roller as the suction port advances. The tape is conveyed to the top of the difference plate and aligned in the vertical and horizontal directions, and then supplied to the printing unit by the swing device.

In such a paper feed, if the right and left positions of the paper are not aligned, the paper may come off from the lateral needle device which is a left and right register device, and a paper feed failure may occur, which may cause the machine stand to stop or a waste paper to occur. , The paper position on the paper stack is detected by a sensor, and the paper stack is moved so that the paper occupies the predetermined position. Paper alignment members are provided, and when the paper size is changed, these paper alignment members are moved and adjusted in the left-right direction. Further, when the paper size is changed, the sucker device and the paper position detector are moved in the vertical direction of the paper to deal with this.

[Problems to be solved by the device]

However, in the conventional paper feeding device, it is necessary to separately move and adjust the paper aligning members such as a paper separator and a horizontal pad each time the paper size is changed, and the sucker device is used as the paper aligning member and the detector. Since it is necessary to separately adjust the movement, there is a problem that not only the operability is poor and it takes a long time to perform the adjustment, but also a paper feed failure occurs due to an operation error and the amount of waste paper is increased.

[Means for Solving the Problems]

In order to solve such a problem, in the present invention, a sucker device that is positioned between left and right frames and is supported on the frame side so as to be movable in the front-rear direction, and a paper feed that is movable in each frame. Of a plurality of types of paper aligning members for aligning the left and right edges of the paper and a paper position detector for detecting the horizontal position of the stacked paper sucked by the sucker device A rack shaft that is fixed to and extends in the left-right direction, and a horizontal shaft that is parallel to the rack shaft and that is supported by the left and right frames in the vicinity of the front end portion of the sheet feeding,
The front end is provided with a pair of left and right shafts which are movably and laterally connected to the horizontal shaft and whose rear part is movably and laterally connected to the rack shaft, and the rack shaft is provided with the shaft in the longitudinal direction. The paper aligning members are arranged side by side on the shaft so as to be movable and adjustable, and the paper position detector is provided integrally with the rack shaft.

[Action]

When changing the paper size, manually rotate the left and right axes, or rotate the horizontal axis with a motor or manually,
The left and right axes move in the left-right direction, and a plurality of types of paper alignment members move together to accommodate the paper size. Further, when the sucker device moves in the vertical direction, the paper position detector moves in synchronization with the rack shaft to correspond to the paper size.

〔Example〕

1 and 2 show an embodiment of a sheet feeding device of a sheet-fed printing press according to the present invention. FIG. 1 is a plan view thereof, and FIG.
FIG. 2 is a front view of the figure viewed from II. In the figure, left and right frames 1
In between, a sucker device 3 having a suction port for sucking the paper 2 stacked on a paper stack (not shown) is supported by a support device (not shown) and is conveyed in the conveying direction of the paper 2 as indicated by reference numeral A in FIG. It is provided so that it can be moved and adjusted in any direction. Reference numeral 4 denotes a rack shaft that is fixed to the sucker device 3 and extends in the left-right direction of the paper 2, and racks 4a having a predetermined length are formed at both ends thereof. The racks 4a at both ends will be described later. Axis 10,1
The shaft holes of the holders 5 and 6 which are supported by 1 and whose rotation is restricted are fitted so as to be movable in the left-right direction. On the other hand, in the vicinity of the front end of the paper 2, a horizontal shaft 7 parallel to the rack shaft 4 is supported and erected on the left and right frames 1, and a rack 7a having a predetermined length is formed at both ends of the horizontal shaft 7. Has been done. Shaft holes of holders 8 and 9 whose rotations are restricted by shafts 10 and 11 are movably fitted to these racks 7a in the left-right direction, and the holders 5 and 8 and the holders 6 and 9 have Shafts 10 and 11 are rotatably supported respectively, and pinions 12 and 13 that engage with the racks 4a and 7a are fitted to the shafts 10 and 11, respectively. The one pinion 13 is restricted from moving in the axial direction with respect to the shafts 10 and 11, while the other pinion 12 is integrated with the sucker device 3, the rack shaft 4, and the holders 5 and 6 to form the paper 2 It is fitted so that it can move in the vertical direction. Reference numeral 14 is a handle for rotation operation, which is fixed to the shafts 10 and 11. With this structure, when the handle 14 is gripped and the shaft 11 is rotated, the rack 4a and the pinion 12 are engaged with each other and the rack 7a is rotated.
The shaft 11 is translated in the left-right direction by the meshing of the pinion 13 with the pinion 13. When the handle 14 is gripped and the shaft 10 is rotated, the shaft 10 is translated in the same manner. Further, when the sucker device 3 moves in the vertical direction of the paper 2, the left and right pinions 12 are synchronized with the rack shaft 4 and the holders 5 and 6 fixed to this.
Move 0,11 on the top and bottom of paper 2. Reference numeral 15 is a knob for fixing the holders 5, 6 to the rack shaft 4 after the movement.

A paper separating member 16 as a paper aligning member is integrally fixed to the holder 5, and a paper separating member 17 as a paper aligning member and a paper position for detecting a position of the paper 2 and outputting a signal to the holder 6. The sensor 18 as a detector is integrally fixed. By doing so, when the holders 5 and 6 are moved in association with the movement of the sucker device 3 as described above, the paper separators 16 and 17 are separated.
And the sensor 18 also moves. Further, on each of the left and right brackets 19 integrally formed with the holders 8 and 9, a paper separating member 20, a paper pad 21 and a paper separating member 22 as a paper aligning member for aligning the left and right end edges of the paper 2 are fixed and mounted on the shafts 10 and 11. Are installed side by side on the shaft 10,
It is configured to move together with 11 in the left-right direction. 23 is fixed to holders 8 and 9 and sucker device 3
3 is a paper guide for guiding the conveyance of the paper 2 by the.

The operation of the sheet feeding device configured as described above will be described. The sheets of paper 2 stacked on the sheet stacker are sucked and conveyed one by one by the suction port of the sucker device 3, guided by the paper guide 23, sent out by a paper feed roller (not shown), and then printed after registration. Supplied to the unit.

When the size of the paper 2 changes, when the sucker device 23 moves in the vertical direction of the paper 2 according to the paper size, the rack shaft 4, holders 5 and 6 and the pinion 12 integrated with the sucker device 23 are connected to the shafts 10 and 11. Along the direction of the paper 2 up and down by the same amount as the sucker device 3,
The paper separator 17 and the sensor 18 move to correspond to the paper size. Further, when the handle 14 is gripped and the shaft 10 and the shaft 11 are respectively rotated, the shafts 10 and 11 move in parallel in the left-right direction due to the engagement between the racks 4a and 7a and the pinions 12 and 13.
The paper separators 16 and 17 integrated with the holders 5 and 6 and the sensor 18, and the paper separators 20 and 22 integrated with the holders 8 and 9 and the paper pad 21 all move in the left-right direction to accommodate the paper size. At this time, the sensor 18 moves in conjunction with the sucker device 3 to detect the paper position, so that the paper tray moves to a predetermined position to correspond to the paper size.

3 and 4 show another embodiment of the present invention.
The figure is a plan view corresponding to FIG. 1, and FIG. 4 is the IV of FIG.
It is a front view. In this embodiment, the fixed horizontal shaft 7 in which the rack 7a is formed at both ends in the above embodiment is used.
Instead of the horizontal shaft 24, a horizontal shaft 24 is rotatably supported, and worms 24a that replace the rack 7a are provided at both ends of the horizontal shaft 24. Also, at the shaft ends of the shafts 10 and 11, the worm 24a
Worm wheel 25 that meshes with is pivoted. further,
The protruding portion of the horizontal shaft 24 from the frame 1 is connected to the motor shaft of the motor 26 supported by the frame 1, and the gear 27 mounted on the motor shaft is located on the potentiometer 28 side supported by the frame 1. It meshes with gear 29. Also, the rotation axis
At the other end of 24, a handle 30 for manually rotating it is fixed. Others are the same as the above-mentioned embodiment.

With this configuration, the drive side is the shafts 10 and 11 in the above-described embodiment, but in this embodiment, the horizontal shaft 24 is the drive side. That is, when the handle 30 is gripped and the horizontal shaft 24 is rotated, the left and right shafts 10 and 11 move in parallel at the same time due to the meshing of the worm 24a and the worm wheel 25, and the paper separators 16, 17, 20, 22 are separated. The paper pad 21 and the sensor 18 move together to accommodate the paper size. It is the same as in the above-mentioned embodiment that the sensor 18 and the paper separators 16 and 17 move in the vertical direction of the paper 2 in association with the movement of the sucker device 3.

Further, in this embodiment, the horizontal axis 24 is driven by a motor, so that the following operational effects are obtained. That is, when the size of the paper 2 changes, the paper size is preset and the motor is
When 26 is started, the horizontal shaft 24 rotates, the sensor 18 detects the paper position, the paper stacking base moves to a predetermined position, and the paper aligning member moves together to accommodate the paper size, Automation becomes possible.

In the embodiment shown in FIGS. 3 and 4, only the handle 30 may be provided without providing the motor 26, or only the motor may be provided without providing the handle 30. Further, in the embodiment shown in FIG. 1, the shafts 10 and 11 may be driven by a motor.

[Effect of device]

As will be apparent from the above description, according to the present invention, a sucker device which is positioned between the left and right frames and is supported on the frame side so as to be movable in the front-rear direction, and a paper feed which is movable in each frame. Of a plurality of types of paper aligning members for aligning the left and right edges of the paper and a paper position detector for detecting the horizontal position of the stacked paper sucked by the sucker device Rack shaft fixed in the left and right direction, a horizontal shaft parallel to the rack shaft and supported by the left and right frames in the vicinity of the front end of the paper feed, and a front end moved in the horizontal direction by the horizontal shaft A pair of left and right shafts that are freely connected and whose rear part is movably and laterally connected to the rack shaft so as to be adjustable in the left-right direction; The above By arranging them side by side and providing the paper position detector integrally with the rack shaft, when changing the paper size, the paper aligning member and the paper stacking base can be formed only by moving the sucker device and rotating the shaft or the horizontal shaft. Can be moved to correspond to the paper size, so that the operability is improved, the operation time is shortened, operation mistakes are eliminated, and the amount of wasted paper due to paper feeding failure is reduced. Further, since it is not necessary to adjust the detectors, the accuracy at the time of assembly can be maintained and the accuracy is improved. Further, automation is easy by driving the horizontal axis with a motor.

[Brief description of drawings]

1 to 4 show an embodiment of a sheet feeding device of a sheet-fed printing press according to the present invention, FIG. 1 is a plan view thereof, and FIG.
FIG. 2 is a front view of FIG. 3, FIGS. 3 and 4 show another embodiment of the present invention, FIG. 3 is a plan view shown in correspondence with FIG. 1, and FIG. 4 is a view of IV of FIG. It is a front view. 1 ... frame, 2 ... paper, 3 ... sucker device, 4 ...
Rack axis, 4a, 7a …… Rack, 7 …… Horizontal axis, 10, 11 ……
Axis, 12,13 …… Rack, 16,17,20,22 …… Paper separation, 21…
… Paper pad, 24… Horizontal axis, 24a… Worm, 25… Worm wheel, 26… Motor.

Claims (1)

[Scope of utility model registration request] 1. A sucker device which is located between left and right frames and is supported on the frame side so as to be movable in the front-rear direction, and a plurality of types for aligning the left and right edges of a paper sheet which is movable with respect to each frame. In the sheet feeding device of the sheet-fed printing press, which is aligned with the sheet aligning member and the sheet position detector that detects the position of the stacked sheets sucked by the sucker device in the left-right direction, the sheet feeder is fixed to the sucker device and extends in the left-right direction. A rack shaft, a horizontal shaft which is parallel to the rack shaft and is supported by the left and right frames in the vicinity of the front end portion of the sheet feeding, and a front end which is horizontally and movably connected to the horizontal shaft, and a rear portion which is connected to the rack. A pair of left and right shafts are connected to the shaft so as to be movable in the left-right direction, and the rack shaft is supported by the shaft so as to be movable in the front-rear direction, and the paper aligning members are arranged side by side on the shaft. And the paper position detector Sheet feeding apparatus sheet-fed printing press, characterized in that provided integrally with the rack shaft.