JPH0741721Y2 - Sheet feeding device for sheet-fed printing press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is a sheet-fed printing press, in which air is blown from both sides to the upper layer portion of the paper stacked on the paper tray of the paper feeding device to separate the paper. The present invention relates to a paper separating device.

[Conventional technology]

In the printing operation by the sheet-fed printing press, the paper stacked on the paper stack of the paper feeding device is sucked one by one from the upper layer by the suction port of the stacking device provided above and sent to the differential plate. After that, it is supplied to the printing unit.

When the paper is fed by such a stacking device, if the stacked papers are not properly separated, two papers are sucked at the same time to cause a paper feeding failure called two-sheet feeding. Therefore, conventionally, the paper feeding device is provided with a paper separating device. Has been done. This type of paper separating device has a plurality of side separating devices that suck air from both sides to separate the paper into the upper layer of the stacked paper, and the paper sucking device is inserted below the first paper sucked by the suction port. It is composed of a blowing foot that presses the second and subsequent sheets of paper by blowing air, and when the paper size changes, the position of the suction port is adjusted and the position of the lateral spreading device is adjusted in the left-right direction of the paper. There is a need to.

[Problems to be solved by the invention]

However, in this kind of conventional paper feeding paper separating device, after adjusting the suction port of the stacking device from the front side of the stacked paper, go to the left side and the right side of the stacked paper and separate each side of the stacked paper. Not only is the operability poor because the devices have to be individually moved and adjusted, but it is also not possible to make adjustments while looking at the left and right stacking conditions from the front, so make proper adjustments so that all the air outlets are in a straight line. It takes a long time to do so, especially when the number of printed sheets in one lot is small, the operating rate of the machine decreases,
It is desired to shorten the adjustment time. In addition, there is a problem that the operability of the adjustment work is poor because there is a switchboard or the like on the side of the stacked sheets.

[Means for solving problems]

In order to solve such a problem, in the present invention, a plurality of horizontal sheets are arranged side by side along both side edges of a stack of paper, and are supported movably in the paper width direction so that a plurality of horizontal sheets are provided on each side. An interlocking mechanism that integrally supports and moves it in the paper width direction is provided, and an operating member of this interlocking mechanism is arranged so as to be operable from the front side of the stacked sheets.

[Action]

If the paper size changes, the operator can position the front side of the stack of paper to move and adjust the suction port of the stacker, and operate the left and right operation members while watching the stacking state at that position. The horizontal separation device moves in the same direction by the same amount, and corresponds to the paper size.

〔Example〕

1 to 3 show an embodiment of a paper feed sheet separating device according to the present invention. FIG. 1 is a plan view thereof, FIG. 2 is a side view of FIG. 1 as seen from A, and FIG. It is a B front view of a figure. In the figure, the left and right frames 1 of the sheet feeding device are vertical members 1a,
It is formed in an inverted L-shape with a horizontal member 1b extending rearward from its upper end, and is arranged between these left and right frames 1 and on a paper stack (not shown) that is automatically or manually moved up and down. , Paper 2 is loaded. A stacking device (not shown) for sucking the stacked papers 2 one by one from the upper layer and sending the stacked papers 2 to the difference plate is supported and disposed on the horizontal member 1b side, and is designated by 2a in the drawing. On the front side of the stacking paper 2 shown in the drawing, there is a blower foot (not shown) that enters between the sucked first sheet of paper and the second sheet of paper or less and presses the second sheet of paper 2 or less by air blowing. It is provided.

On both sides of the stack of paper 2, there are provided two sets of left and right lateral separating devices, generally designated by reference numeral 3, and in the figure, only the left lateral separating device 3 when viewed from the front side is shown. Since the right-hand ones having the same shape have the same structure, their illustration and description are omitted. The lateral separating device 3 includes a pair of front and rear brackets 5 fixed to the lower surface of the horizontal member 1b with bolts 4, and each bracket 5 has a pair of front and rear racks 6 extending in the width direction of the paper 2 with bolts 7. It is fixed. Reference numeral 8 denotes a bearing member formed in an inverted L shape and slidably supported on the rack 6. The shaft holes 8a and 8b provided in each bearing member 8 have a rotatable operation shaft 9 And a separating shaft 10 which is longer than this and which is fixed in the direction of rotation and which is fixed in the direction of rotation, are axially supported in parallel with each other so as to extend along the side edge of the paper 2, and each of these shafts 9, 10 is restricted from moving in the axial direction. Reference numeral 11 designates three sets of front and rear lateral blades fixed by bolts 12 at three locations on the separating shaft 10 near the rack 6 and the projecting end portion, and two of these are also supported by the operating shaft 9. Has been done. The shape of the projecting end portion is slightly different from the shape of the other two sets, but since it has the same function, each member will be described with the same reference numeral. That is, a vertical screw shaft 14 is screwed into the screw hole of the horizontally long rectangular block 13 fixed to the separating shaft 10, and the screw shaft 14 is vertically moved by rotating the screw shaft 14. The knob 15 for moving is screwed. Reference numeral 16 denotes a blower port fixed to the lower end of the screw shaft 14 and connected to an air source (not shown) with a hose or the like, and the air blowout port is made to face the upper layer side end of the paper 2 and The air is blown to the paper 2 from the side by the operation of the source. Reference numeral 17 denotes a compression coil spring which is interposed between the block 13 and the blowout port 16 and biases the screw shaft 14 downward. A pair of pinions 18 that mesh with the racks 6 are pivotally mounted on the operation shaft 9, and a knob 19 for rotating operation is fixed to the projecting end on the front side. When the pinion 18 is rotated, the pinion 18 is rotated to roll on the stationary rack 6, and the three lateral separation members 11 are interlocked to move the same amount in the paper width direction. Reference numeral 20 is a thumbscrew that fixes the rotation of the operation shaft 9.

Furthermore, an arm 22 is movably supported in the axial direction on a stay 21 that connects the left and right frames 1 above the front end of the paper 2, and the tip end of the arm 22 has an auxiliary horizontal contact at the lower end. A shaft 24 to which 23 is fixed is supported so as to be adjustable in the vertical direction, and a knob 25 for fixing the arm 22 at a moving position is screwed into a screw hole of the arm 22. The side edges of the paper 2 are aligned by the auxiliary horizontal pad 23, and the auxiliary horizontal pad 23 corresponds to the paper size by adjusting the movement of the arm 22.

The operation of the paper feed sheet separating device configured as described above will be described. When the printing operation is started, the paper 2 on the paper stack is sucked one by one from the upper one by the suction port of the stacker, sent out onto the differential plate, and then supplied to the printing unit. When sucking the paper 2, the blower foot (not shown) presses the second and subsequent sheets of paper 2 by blowing air, and air is blown to the side edge of the paper 2 from the blowout port 16 of each lateral separation 11. , The paper 2 is well fanned, and the mouthpiece does not suck two papers at a time.

When the paper size changes, the operator is positioned on the front side of the stack of paper 2 to move and adjust the suction port of the stacking device before starting printing, and the operator can move the suction port of the stacker device to the front side without moving it. Loosen 20 and rotate left and right knobs 19. As a result, the operating shaft 9 rotates and the pinion 18 rolls on the rack 6, so that the bearing member 8 moves while sliding on the rack 6, and the three sets of lateral separations 11 interlock and move by the same amount. Corresponds to the paper size. This operation can be performed while operating the machine and observing the stacking condition. After adjustment 20
The operation shaft 9 is fixed by. In addition, when stacking the paper 2, not only the horizontal support (not shown) and the auxiliary horizontal support 23 (not shown) are adjusted according to the size of the paper, but when the height of the blowing port 16 is inappropriate, the knob 15 is rotated. It is operated to correspond to the height of the paper 2.

In this embodiment, the rack 6 and the pinion 18 are exemplified as the interlocking mechanism of each lateral separation 11, but the operation shaft and the support shaft of each lateral separation 11 are driven by a screw shaft, a bevel gear, a chain, or the like. You may connect and interlock. Further, if these operating mechanisms are provided with a scale and a pointer on the operating portion, more appropriate adjustment can be performed in a short time.

[Effect of device]

As is apparent from the above description, according to the present invention, in the sheet feeding device of the sheet-fed printing press, a plurality of side-by-side blades arranged in parallel along both side edges of the stacked sheets are movable in the paper width direction. Supporting and supporting a plurality of one side of each of the lateral separations and moving the same in the paper width direction, an operating member of this interlocking mechanism is arranged so that it can be operated from the front side of the stacked sheets. Therefore, when changing the paper size etc., the operator can operate all the horizontal separation by operating the left and right operation members at the adjustment position of the stacking device and on the front side of the machine base without obstacles. Can be moved by the same amount, and can be adjusted while observing the left and right stacking conditions while the machine is operating, which greatly improves operability and reduces work time and labor. Tomo , Appropriate adjustments are made, the paper separating function is improved.

[Brief description of drawings]

FIGS. 1 to 3 show an embodiment of a paper feed separating device of a sheet-fed printing press according to the present invention. FIG. 1 is its plan view and FIG.
The drawing is a side view as seen from A in FIG. 1, and FIG. 3 is a front view as seen in B in FIG. 2 ... Paper, 3 ... Horizontal separating device, 6 ... Luck, 9 ...
Operation axis, 10 …… Decision axis, 11 …… Side action, 13 …… Bearing member, 16 …… Blowout port, 18 …… Pinion, 19 …… Knob.

Claims (1)

[Scope of utility model registration request] 1. A lateral separation unit in which a plurality of sheets are arranged in parallel along both side edges of the stacking paper and air is blown to the upper layer portion of the stacking paper,
An interlocking mechanism is provided that supports the lateral movements in a freely movable manner and that supports a plurality of lateral sides integrally on each side and moves them in the paper width direction. A sheet feeding device for a sheet-fed printing press, which is arranged so that it can be operated from.