JPH052506Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a paper feeding paper that is attached to a paper feeding device of a sheet-fed printing press and that presses the edges of the paper stacked on a paper stacking table to prevent it from flaring. This invention relates to a presser device.

[Conventional technology]

In a sheet-fed printing press, the paper stacked on the paper stacking table of the paper feeder is separated from the upper layer by a suction device.
After the sheets are sucked one by one and sent out onto the differential plate, they are fed to a printing unit by a swing device and printed. In this paper feeding operation, if the paper is not held down when the paper is sucked by the suction device, the paper will become loose and a paper feeding failure will occur.Therefore, a paper holding device has been conventionally provided to press down the edges of the stacked papers.

[Problem to be solved by the invention] However, in the conventional paper pressing device of this type, multiple types of weights are prepared, and one with an appropriate weight is selected according to the thickness of the paper, and the weight shaft is attached to the weight shaft. Not only was it troublesome to replace the weight, but there was also the risk of the weight falling off or becoming entangled in paper, causing damage to the machine.

[Means for solving problems]

In order to solve these problems, in the present invention, a weight made of a non-magnetic material and a weight made of a magnetic material above the weight are stacked on a weight shaft that is supported by the machine base and hangs down. A magnet was attached to the upper support member side of the weight shaft to attract the weight made of a magnetic material.

[Effect]

If the stacked paper is cardboard, a weight made of a magnetic material is stacked on a weight made of a non-magnetic material to apply weight and press the stacked paper. In addition, if the stacked paper is thin paper, the weight made of a magnetic material is attracted by a magnet to make it unused, and the stacked paper is held down only by the light weight made of a non-magnetic material.

〔Example〕

1 and 2 show an embodiment of the feeding paper holding device according to the present invention, FIG. 1 is a front view thereof, and FIG.
The figure is also a side view. In these figures,
Printing paper 1 is stacked on a paper stacking table of a paper feeding device, and a support shaft 2 is supported by a box (not shown) and installed diagonally above it.
A bracket 3 is fitted onto the support shaft 2 so as to be movable and adjustable, and a fixing screw 4 with a knob 4a for fixing the bracket 3 at an adjusted position is screwed into a screw hole of the bracket 3. Reference numeral 5 denotes a weight shaft inserted into the shaft hole 3a of the bracket 3 and suspended, one side of which is chamfered over its entire length to form a flat surface 5a.
is formed in the notch hole of the bracket 3, and a notch 6 for regulating the rotation of the weight shaft 5 is formed on the flat surface 5.
It is driven in opposite to a. Further, the flat surface 5a of the weight shaft 5 is attached to the side edge of the stacked paper 1,
At both upper and lower ends of the weight shaft 5, retaining pins 7 and 8 are provided.
is typed in. A cylindrical weight 9 made of a non-magnetic material such as plastic or rubber and having a cylindrical recessed hole 9a is fitted into the weight shaft 5 so as to be movable up and down, and presses the stacked paper 1 with its own weight. Furthermore, a weight 9 made of a magnetic material, which is fitted into the weight shaft 5 so as to be movable up and down, is engaged and stacked in the concave hole 9a of the weight 9 so as to be freely inserted and removed. Further, a rubber magnet 11 shown as an example of a magnet is attached to the lower surface of the bracket 3 as an upper support member of the weight shaft 5, and when the weight 10 is not in use, it is attracted to the rubber magnet 10 to reduce the weight of the weight. It is configured so that it is not weighted to 9.

The operation of the paper holding device configured as above will be explained. When the loaded paper 1 is cardboard, when the weight 10 is fitted into the recessed hole 9a of the weight 9 as shown in the figure,
Since the weights of both weights 9 and 10 are added together and act on the paper 1 to press it, an appropriate pressing force corresponding to the thickness of the paper can be obtained, and the paper 1 will not be damaged.

If the loaded paper 1 is thin paper, a weight 1 made of magnetic material is used.
0 on the weight shaft 5 and attach the rubber magnet 1.
1, only the weight of the weight 9 made of a light non-magnetic material acts on the loaded paper 1, and an appropriate pressing force corresponding to the thickness of the paper is obtained, so that the paper 1 does not tear. In this case, since the weights 9 and 10 remain inserted into the weight shaft 5, they will not dissipate or get caught up in the machine.

When the paper size is changed, the fixing screw 4 is loosened and the bracket 3 is moved to easily accommodate the paper size. In addition, by processing the paper stacking stand, paper 1
Even if the upper end falls below the lower end of the weight shaft 5, the weights 9 and 10 will not fall because of the retaining pin 8.

[Effect of idea]

As is clear from the above explanation, according to the present invention, in a paper feed paper holding device for a sheet-fed printing press, a weight made of a non-magnetic material is mounted on a weight shaft that is supported by the machine base and hangs down, and a weight above the weight is attached to the weight shaft. By stacking the weights made of magnetic material and fitting them so that they can rise and fall freely, and attaching a magnet that attracts the weights made of magnetic material to the upper support member side of the weight shaft, when the paper loaded is cardboard, By stacking both weights and pressing down on the loaded paper, the heavy weight acts on the loaded paper,
If the loaded paper is thin, a light weight will be applied to the loaded paper by attaching a weight made of magnetic material to the magnet and leaving it in the unused state, so you can easily adjust the appropriate paper presser according to the thickness of the paper. This eliminates paper fraying during paper feeding, eliminates paper feeding defects, and shortens preparation time. Furthermore, since both weights remain attached to the weight shaft, the weights do not dissipate and there is no risk of the weights getting caught up in the machine, making it safe.

[Brief explanation of the drawing]

FIGS. 1 and 2 show an embodiment of a feeding paper holding device for a sheet-fed printing press according to the present invention, with FIG. 1 being a front view thereof, and FIG. 2 being a side view thereof. 1...Paper, 2...Support shaft, 3...Bracket,
4... Fixing screw, 5... Weight shaft, 7, 8... Retaining pin, 9... Weight made of non-magnetic material, 9a... Recessed hole, 10... Weight made of magnetic material, 11... Rubber magnet.

Claims (1)

[Scope of utility model registration request] A weight shaft that is supported by the machine base and hangs down; a weight made of a non-magnetic material that is fitted to the weight shaft so as to be able to rise and fall and presses the loaded paper with its own weight; A weight made of a magnetic material is fitted on a weight shaft so as to be able to rise and fall and is loaded with its own weight, and a magnet is provided on an upper support member side of the weight shaft to attract and hold the weight made of a magnetic material when not in use. A paper feeding paper holding device for a sheet-fed printing press characterized by the following features.