JPH0568984U - Automatic paper feed structure - Google Patents

Abstract

(57) [Summary] [Purpose] The present invention relates to the structure of an automatic paper feed unit, and particularly to the paper separation structure used in the same unit, for the purpose of simplifying the structure. [Structure] An automatic system in which a plurality of paper sheets loaded in a hopper are pressed against a paper feed roller by a paper separating pad made of an elastic material, and the paper sheets are separated by the rotation of the paper feed roller and fed one by one. In the paper feeding structure, the paper separating pad is provided with a pressing means for pressing the hollow sheet or the foamed elastic paper sheet against the paper feeding roller, and the paper separating pad is attached to the paper sheet on the paper feeding roller. It is configured by being fixed to a sheet separation pad fixing plate which is fixed so as to be pressed.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a structure of an automatic sheet feeding unit, and more particularly to a structure for separating sheets used in the unit.

[0002]

[Prior Art]

 As shown in the side view of FIG. 5, an original (paper sheet) 1 is stacked on a hopper 2 in a facsimile machine, for example, and is fed to a reading unit 4 by an automatic paper feeding unit 3.

The automatic paper feeder 3 separates one or more originals 1 stacked on the hopper 2 and sends them one by one, so that the originals 1 are pressed against the paper feed roller 5 for paper separation. A pad 6 is provided, and a rear end portion of the paper separating pad 6 is fixed to a paper separating pad fixing plate 12, and a front end portion thereof is attached by a spring means 7 such as a leaf spring to press the original 1 against the paper feeding roller 5. There is a momentum.

The sheet separating pad 6 is formed in a plate shape with an elastic material such as rubber, and has a friction coefficient larger than that of the originals 1. With the automatic paper feeding unit 3 having such a configuration, the original document 1 loaded on the hopper 2 is pressed against the paper feeding roller 5 by the paper separating pad 6 and comes into contact with the paper feeding roller 5 by the rotation of the paper feeding roller 5. The lowermost original 1 is separated and fed one by one.

[0005]

[Problems to be solved by the device]

 As described above, the sheet separating pad 6 is urged by the spring means 7 such as a leaf spring and is pressed against the original 1 with an appropriate pressure.

As described above, since the spring means 7 and the like are provided, there is a problem that the structure is complicated, replacement work is difficult, the number of parts is increased, and the cost is increased. The present invention aims to simplify the structure of the automatic sheet feeder.

[0007]

[Means for Solving the Problems]

 In the present invention, as shown in the side view of FIG. 1, the paper separating pad 8 has a hollow portion 10 and a paper sheet (original) 1 of foamed elastic material 15 for pressing the paper feeding roller 5 against the paper. The sheet separating pad 8 is fixed to a sheet separating pad fixing plate 13 for fixing the sheet separating pad 8 so as to press the original 1 on the sheet feeding roller 5.

[0008]

[Action]

 Since the paper separating pad 8 presses the original 1 against the paper feeding roller 5 by the pressing means 9 provided therein, the biasing of the spring means 7 is not necessary and the structure is simplified.

[0009]

【Example】

 In the present invention, as shown in the side view of FIG. 1, the paper separating pad 8 has a pressing means 9 for pressing the hollow portion 10 and the paper sheet 1 of the foamed elastic material 15 against the paper feeding roller 5. The sheet separating pad 8 is fixed to a sheet separating pad fixing plate 13 that fixes the sheet separating pad 8 so as to press the original 1 on the sheet feeding roller 5.

As shown in the figure, the pressing means 9 has a hollow portion 10 for adjusting the pressing force in the axial direction of the paper feed roller 5, as shown in the drawing. The lower surface 8a of the hollow portion 10 is supported by the elastic force of the three surfaces, or the hollow portion 10a is completely sealed as shown in the side view of FIG. Alternatively, or as shown in the side view of FIG. 3, a foamed elastic material 11 such as sponge rubber is filled in the hollow portion 10 having one surface opened and the closed hollow portion 10a to form a foam bullet. The elasticity of the lower surface 8a of the hollow portions 10 and 10a may be made uniform by the elasticity of the elastic material 11, or as shown in the side view of FIG. A plate-like foam elastic material 15 such as sponge rubber is interposed between the pad 14 for paper and the pad fixing plate 13 for separating paper. It may be pressing the sheet separating pad 14 to the original 1 on the sheet feed roller 5 in urging due to elasticity of the plate-like foamed elastic member 15.

The paper separating pads 8 and 14 are fixed along the entire length to a paper separating pad fixing plate 13 for fixing the paper separating pads 8 and 14 so as to press the original 1 on the paper feed roller 5. is doing.

With such a structure, the pressing force of the paper separating pads 8 and 14 against the original 1 can be properly maintained by the biasing means 9 provided in itself, and the pressing force used in the prior art can be maintained. The biasing spring means 7 is unnecessary and the structure is simplified.

[0013]

[Effect of the device]

 According to the present invention, the automatic paper feeding structure is simplified, the workability of replacement is improved, and the cost can be reduced, which is a great economic and industrial effect.

[Brief description of drawings]

FIG. 1 is a side view of an automatic paper feeding structure of the present invention,

FIG. 2 is a side view showing another first embodiment of the paper separating pad of the automatic paper feeding structure of the present invention,

FIG. 3 is a side view showing another second embodiment of the paper separating pad of the automatic paper feeding structure of the present invention;

FIG. 4 is a side view showing another third embodiment of the paper separating pad of the automatic paper feeding structure of the present invention,

FIG. 5 is a side view of a conventional facsimile apparatus having an automatic paper feed structure,

[Explanation of symbols]

1 original document, 5 paper feed roller, 6, 8, 14 paper separating pad, 7 spring means, 8a lower surface of hollow part, 9 biasing means, 10, 10a hollow part, 11 foam elastic material, 12, 13 for paper separating Pad fixing plate, 15 plate-shaped foam elastic material,

Claims (1)

[Scope of utility model registration request] 1. A plurality of paper sheets loaded in a hopper
(1) is pressed against the paper feed roller (5) by the paper separating pad (8) made of an elastic material, and the paper sheets (1) are separated by the rotation of the paper feed roller (5), one by one. In the automatic feeding structure for feeding, the paper separating pad (8) presses the hollow portion (10) or the paper sheet (1) of foamed elastic material against the paper feeding roller (5). It is equipped with a pressing means (9) and is fixed to a paper separation pad fixing plate (13) for fixing the paper separation pad (8) so as to press it against the paper sheets (1) on the paper feed roller (5). Automatic paper feeding structure characterized by