JPS6216429Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a paper feed positioning device for positioning printing paper stacked on a paper stacking table of a paper feeder in the front, back, left and right in a sheet-fed printing press.

A sheet-fed printing press is equipped with a paper feeder that feeds the printing paper stacked on a pallet to the printing unit, and the next printing paper stacked on the pallet at another location before or during the printing operation is The paper is transported by a hand lift, etc., and transferred onto the paper stacking table of this paper feeder, which is then positioned forward, backward, left, and right based on a ruler inside the paper feeder that has been adjusted to a predetermined position, and then printed. Work begins. Conventionally, a device as shown in FIG. 1 has been generally used as a positioning device for this paper feed. That is,
Paper stacking table 1 has rules 2 arranged in parallel in the machine width direction.
It is supported perpendicularly to this rail 2 and is indicated by arrow A in the figure.
It is equipped with a pair of front and rear beams 3 that are movable in the direction indicated by arrow B in the figure. A paper receiving bar 5 is provided. Further, an adjusting rack 6 having a plurality of grooves is fixed to the side surface of the rail 2, and a fixing screw 7 is screwed into the beam 3 to fix it to the rail 2 after positioning. When the pallet loaded with printing paper is placed on the paper receiving bar 5 of the paper stacking table 1, the handle 4 is rotated in the left and right direction until the edge of the printing paper hits the horizontal ruler. Then, by engaging the rod 8 with the groove of the adjusting rack 6 and the rear end of the beam 3, and pushing the beam 3 forward with leverage until the edge of the printing paper hits the front ruler, It was positioning in the front and back direction.

However, with such conventional paper feed positioning devices, not only does it take a long time for positioning, but it is labor-intensive work to rotate the handle or use a stick in a narrow space. Ta.

The present invention was developed in view of the above points, and consists of steel balls that are rotatable in each direction placed in at least four corners of a pit provided on the floor of the paper feeder, and paper placed on top of the pits. The paper stacking platform is supported movably in each direction using bolts with a smaller diameter inserted through its through holes, and by moving the paper stacking platform, the laminated paper placed on the platform is positioned in line with the ruler. To provide a paper feed positioning device for a sheet-fed printing press that is configured to perform paper feed positioning work quickly and easily, thereby improving work efficiency and reducing labor. It is.

Hereinafter, its configuration and the like will be explained in detail with reference to embodiments shown in the drawings.

2 and 3 show a paper feed positioning device according to the present invention, and FIG. 2 is a side view showing a paper feeder of a sheet-fed printing press in which the device is implemented and laminated paper transported by a hand lift; FIG. 3 is an exploded perspective view of the paper feed positioning device. In the figure, a sheet feeder 11 of a sheet-fed printing press is equipped with a pair of left and right frames 12 formed in an inverted L shape, and a pair of front and rear beams 13 extending from the horizontal member in the width direction of the machine base. is suspended by four chains 14. Further, a pair of left and right front rulers 15 are provided upright between the vertical members of the frame 12 on both sides.
In addition, near the vertical member of the frame 12 on one side,
Horizontal ruler 1 that is movable and adjustable in the machine width direction
6 is provided upright. The paper feeder 11 includes a paper feed device (not shown) that feeds the printing paper one by one to the printing unit, and a chain 14 that winds up the paper as it feeds the paper to keep the top surface of the printing paper always on the same plane. An automatic lifting device (not shown) is provided.

A pit 17 is provided on the floor inside the paper feeder 11 configured as described above.
A substrate 18 formed of a framework of iron plates is fixed to the bottom surface of 7 with anchor bolts 19. An annular steel ball tray 20 is fixed to the four corners of this board 18, and this steel ball tray 20
Inside, a plurality of steel balls 21 are loaded in an annular shape along the inner peripheral surface. Furthermore, screw holes 22 are bored in both the front and rear ends of one side of the board 18 . A paper stacking table 23 is placed on the steel ball 21, covering almost the entire surface of the pit 17, having substantially the same dimensions as the substrate 18, and having an upper surface flush with the floor surface.
3, a pair of front and rear through holes 24 are provided in the screw hole 22.
The bolt 26 inserted into the through hole 24 through the washer 25 is inserted into the screw hole 22.
is screwed into. Even after tightening the bolts 26, the paper stacking table 23 remains in a loose state, and by forming the diameter of the through hole 24 to be larger than the diameter of the bolt 26, the paper stacking table 23 can be moved in each direction. It is formed to be able to move freely, but its movement is restricted to a large extent. That is, the outer diameter of the bolt 26 and the through hole 24
The movement of the paper stacking table 23 is restricted within the range of the dimensional difference from the diameter of the paper stacking table 23.

On the other hand, laminated paper to be supplied to the paper feeder 11 is prepared. That is, a pallet 31 is placed on a conventionally known hand lift 30 equipped with a steering handle 27, wheels 28, a carrier 29, and a lifting device for the carrier 29. 32 is loaded.

The feeding and positioning of printing paper to the paper feeder configured as above will be explained. First, in order to feed the stacked paper to the paper feeder 11, the chain 14 is lowered and the beam 13 on the entry side is removed and prepared. Meanwhile, at another location, the pallet 31 is aligned while aligning the edges of the paper with a ruler. Printing paper 32 loaded on top
is carried by the hand lift 30 and positioned as shown in the figure. Then, place the horizontal ruler 16 on this printing paper 32.
After adjusting the movement according to the dimensions of Let it land. When the carrier 29 is further lowered, the pallet 31 is separated from the carrier 29, and the hand lift 30 is moved out of the paper feeder 11.

The printing paper 32 on the pallet 31 placed on the paper stacking table 23 in this way is not accurately registered with respect to the printing unit because the hand lift 30 is entered with a rough register. . So, if you grab the pallet 31 and push it forward, backward, left and right,
The paper stacking stand 23 is supported at its four corners by rotatable steel balls 21, and the through holes 24 of the paper stacking stand 23 are supported by bolts 2.
6, the pallet 31 and the printing paper 32 stacked thereon can be freely moved in any direction. Then, by moving the printing paper 32 in this way and bringing the front end and one side end of the printing paper 32 into contact with the front ruler 15 and the horizontal ruler 16 that have been set at accurate positions in advance, the printing paper 32 can be accurately registered. The position is determined by This positioning work is performed on the paper stacking table 23.
By supporting it with a steel ball, it can be carried out extremely easily and in a short time.

After positioning in this way, the beam 13 that was removed earlier is hooked onto the chain 14, and the chains 14 at the four corners are simultaneously hoisted up to a predetermined position, and then automatic lifting is switched to start printing. The above-described operations for feeding paper into the paper feeder 11 and positioning thereof may take a long time to describe, but in reality they can be performed in a very short time.

Although at least four steel ball trays 20 are required and at least two through holes 24 are required, a larger number may be provided.

As is clear from the above explanation, according to the present invention, steel balls rotatable in each direction are arranged in at least four corners of a pit provided on the floor inside the paper feeder of a sheet-fed printing press, and A paper stack placed on the paper stack is supported movably in each direction by bolts of a smaller diameter than this inserted through the through hole, and as the paper stack is moved, the laminated paper on the stand is placed on top of the paper stack. By configuring the machine so that it is positioned in line with a ruler, the paper feed positioning work can be done in an extremely short time and with light operations, improving work efficiency and reducing labor and labor. Can be done.

Further, since the paper stacking table is supported movably in all directions using only the steel ball tray loaded with steel balls, there is an advantage that the structure is simple and can be constructed with a small number of parts.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the main parts of a conventional paper feed positioning device, Figs. 2 and 3 show a paper feed positioning device for a sheet-fed printing press according to the present invention, and Fig. 2 is a perspective view showing the main parts of a conventional paper feed positioning device. FIG. 3 is a side view showing a paper feeder of a sheet-fed printing press and laminated paper transported by a hand lift, and FIG. 3 is an exploded perspective view of a paper feed positioning device. 11...Paper feeder, 15...Front ruler, 16...Horizontal ruler, 17...Pitt, 20...Steel ball saucer, 21
... Steel ball, 22 ... Screw hole, 23 ... Paper stacking stand, 2
4...Through hole, 26...Bolt, 31...Pallet, 32...Printing paper.

Claims (1)

[Claims for Utility Model Registration] In a paper feeder 11 of a sheet-fed printing press that is equipped with rulers 15 and 16 erected in front and on the sides of stacked printing paper, A steel ball tray 20 disposed at at least four corners of a pit 17 provided on the floor, a steel ball 21 rotatably loaded in the steel ball tray 20, and a steel ball tray 21 that substantially covers the opening of the pit 17 and has an upper surface facing the floor. a paper stacking stand 23 supported horizontally and movably in all directions on the steel ball 21 so as to be flush with the surface of the steel ball 21;
and a bolt 26 inserted into a through hole 24 bored in at least two places in this paper stacking table 23, the outer diameter of this bolt 26 is set to be smaller than the diameter of the through hole 24, and this outer diameter A paper feed positioning device for a sheet-fed printing press, characterized in that movement of the paper stacking table 23 is restricted.