JPH02276735A - Paper feeding device - Google Patents

Abstract

PURPOSE:To prevent two sheets of paper from being sent out in superposed state and surely separate the paper by arranging a guide member having a projection part, in the vicinity of a pick-up device. CONSTITUTION:When two sheets of paper 1 in superposed state are attracted by a pick-up device 3, the projecting part 5a of a guide member 5 contacts the upper surface of the paper 1, and a deflection is generated at the bent edge part from the contact part of two sheets of paper. When, in this state, air is blown from a paper separating device 4, air is easily introduced into the gap from the edge part of two sheets of paper 1, and the superposed sheets of paper can be surely separated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper feeding device that supplies paper for a printer.

[Conventional technology]

FIG. 2 is a diagram showing the equipment configuration of a conventional paper feeding device, in which cut sheets 1 are stacked on a table 2, and are picked up one by one by a pickup device 3 from above and sent out.

The pickup device 3 is provided with a chamber 3a that is brought to negative pressure by a blower (not shown), and the paper 1 sucked by the negative pressure is transferred to a perforated belt 3c of a belt transmission mechanism 3b.
adheres to the surface of

Also, a paper separation device 4 is provided near the opening of the chamber 3a.
is arranged, and blows air from the nozzle 4a to the side surface of the paper 1 to separate the two sheets of paper 1 placed at the top, so that the paper 1 is not sent out while remaining overlapped.

[Problem to be solved by the invention]

In the prior art, there was a risk that two sheets of paper would not be separated due to the attraction force caused by static electricity, or that the two sheets of paper would be sucked into the pickup device 3 while being overlapped without being separated due to the curl of the paper.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a paper feeding device that eliminates the drawbacks of the prior art and that can reliably separate two sheets of paper and prevent them from being sent out while being overlapped.

[Means to solve the problem]

The present invention is characterized in that a guide member having a protrusion is disposed near the pickup device, and the protrusion is brought into contact with the upper surface of the paper to facilitate separation of the paper.

[Effect]

In the present invention, since the protrusion of the guide member is brought into contact with the top surface of the paper, if two sheets of paper overlap each other and are sucked into the pickup device, the two sheets of paper will be removed from the part where the protrusion makes contact. It is bent and the edges are misaligned.

Therefore, the air from the paper separation device easily enters the gap between the ends of the two sheets of paper, making it possible to reliably separate the sheets of paper.

〔Example〕

An embodiment of the present invention will be described below with reference to one drawing.

FIG. 1 is a device configuration diagram of a paper feeding device according to this embodiment. This embodiment is a conventional paper feeding device shown in FIG. 2 in which a guide member 5 is provided. In FIG. 1, the guide member 5 is arranged near the pickup device 3, and the protrusion 5a
is provided.

Now, the two sheets of paper 1 are stacked on the pickup device 3.
When the guide member 5 is attracted, the protruding portion 5a of the guide member 5 comes into contact with the upper surface of the paper 1, and the two sheets of paper are bent and shifted from the contact portion.

Therefore, according to this embodiment, when linear air is blown from the paper separating device 4, the air easily enters the gap from the ends of the two sheets of paper 1, making it possible to reliably separate the overlapping sheets.

〔Effect of the invention〕

According to the present invention, it is possible to solve the drawbacks of the prior art and to obtain a paper feeding device that can reliably separate two sheets of paper and prevent them from being sent out while being overlapped.

[Brief explanation of drawings]

FIG. 1 is an equipment configuration diagram of a paper feeding device according to an embodiment of the present invention, and FIG. 2 is an equipment configuration diagram of a conventional paper feeding device. 1 is paper, 2 is a table, 3 is a pickup device, 4 is a paper separation device, 5 is a guide member, 5a is a protrusion part 1 figure

Claims (1)

[Claims] 1. A pickup device that picks up and sends out sheets of paper stacked on a table one by one, and a paper separation device that blows air to the sides of the paper to separate the two sheets placed at the top. In the paper feeding device, a guide member having a protrusion is disposed near the pickup device, and the protrusion is brought into contact with the upper surface of the paper to promote separation of the paper. Paper feed device.