JPS5834108Y2 - Paper feeding device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a paper feeding device that reliably feeds sheets of paper stacked on a tray or the like one by one.

A conventional paper feeding device using only a corner separator cannot reliably separate sheets of paper when it sends out a plurality of sheets, and instead sends the plurality of sheets as they are.

Conventionally, as a method to prevent multiple sheets from being sent out, methods such as holding the stacked paper on the side have been used, but this method involves pressing parallel to the side of the stacked paper. The effect is small compared to the applied force.

Moreover, as the number of stacked sheets increases, the effect becomes smaller and smaller.

The present invention was developed to improve the conventional paper feeding device described above, and in particular, in order to obtain the same effect even when the number of sheets loaded is increased, both corners of the paper held by the feed roll are By pushing the section horizontally on an inclined surface, the uppermost sheet of paper is separated one by one before being fed by a feed roll.

Embodiments of the present invention will be described below based on the drawings.

Separate rolls 3 and 4 in the shape of a truncated cone are mounted on the drive shaft 5 of the feed rolls 1 and 2, and paper 6 is loaded with the inclined surface thereof.
It is attached by pressing it with a spring 7.8 so that it is in contact with the top corner of the board.

The springs 7.8 are received by spring supports 9a, 10a, and each separate roll 3, 4 is supported by a stopper 10a.

It moves until it comes into contact with 10b.

11.12 is a corner separate.

The relationship between the next nifted roll 1.2 and the separate roll 3.4 will be described in detail.

As shown in FIG. 3, the inclined surfaces of the separate rolls 3, 4 contact the top corners of the stacked sheets slightly earlier than the feed rolls 1.2 contact the top surfaces of the stacked sheets.

Then, as shown in FIG. 4, when the feed roll 1.2 is lowered to the position where it contacts the top surface of the stacked sheets 6, the topmost sheet of the stacked sheets is pushed in the horizontal direction by the separate roll 3.4. A curvature is created between the feed roll 1.2.

Therefore, the topmost paper is always separated and sent out one by one.

This operation can always be performed in the same state even if a large amount of paper is loaded.

At this time, an appropriate buckle can be obtained by making the positions of the stoppers 10a and 10b movable and adjusting the positions depending on the stacking thickness of the sheets.

As described in detail above, the paper feeding device according to the present invention is a paper feeding device using the corner separator 11.12 and the feed roll 1.2 in contact with the uppermost surface of the stacked sheets 6. A separate plate having a truncated conical shape and biased by a spring 7.8 so that its inclined surface faces the drive shaft 5 and touches the top corner of the stacked sheets 6 is attached to the drive shaft 5 of the Since the rolls 3 and 4 are provided, the uppermost sheet can be curved and separated from the second and subsequent sheets without fail before being fed by the feed roll 1.2. By being biased in the direction of contact with the paper at 7 and 8, both corners of the paper can be pushed evenly and positively, and the reliability of paper separation can be improved.

Furthermore, since the separate rolls 3 and 4 are provided on the drive shaft 5, there is no need for special installation fittings, etc., and the price is not only low, but also the separate rolls 3 and 4 rotate together with the drive shaft 5. This allows for smooth paper feeding without imparting unnecessary resistance to the paper that would impede its feeding.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the principle of the paper feeding device according to the present invention, Fig. 2 is a plan view thereof, Fig. 3 is an explanatory diagram showing the state in which the separate roll is in contact with the corner of the paper, and Fig. 4 is the separate roll. FIG. 3 is an explanatory diagram showing a state in which the feed roll and the roll are in contact with the paper. 1.2 is a feed roll, 3.4 is a separate roll,
6 is paper, 7 and 8 are springs, and 11.12 is a corner separator.

Claims (1)

[Claims for Utility Model Registration] A paper feeding device using a corner separator 11.12 and a feed roll 1.2 in contact with the uppermost surface of the stacked sheets 6: In the above-mentioned feed roll 1. A truncated cone shaped drive shaft 5 is biased by springs 7 and 8 so that its inclined surfaces face each other and contact the top corner of the stacked sheets 6. A paper feeding device characterized by being provided with separate rolls 3 and 4.