JP2605009Y2 - Paper feeder - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper feeder for feeding and transporting paper stacked on a table one by one from an upper layer.

[0002]

2. Description of the Related Art Paper feeders attached to printing machines and the like, in particular,
A paper feeding device for supplying small paper such as a postcard to a printing unit or the like is generally configured as follows. In other words, a paper separation that blows air is provided behind the paper end of the paper stacked on the paper stacking stand, and a paper that can stand upright on the front end surface of the upper end of the stacked paper. A patch is attached. Above the stacked paper, a suction port of the sucker device is supported so as to be movable in the vertical direction and in the front-rear direction. In front of the suction port, a plurality of paper feed rollers arranged in parallel in the axial direction are provided on the peripheral surface. A paper feed roller abutted on the upper end is rotatably mounted on a shaft. A plurality of paper feed tapes extending forward on the feeder board are provided in front of the paper feed rollers.

[0003] With this configuration, the stacked paper is discarded by the air blown by the paper separation while being restrained from moving by the paper pad attached to the end of the paper, and then moved up and down. Each of the upper layers is sucked one by one by the moving suction port, and is conveyed forward by the movement of the suction port. The transported paper is caught at the front end by a rotating paper feed roller and a feed roller, is sent out onto a paper feed tape, and is transported.

[0004]

However, in such a conventional paper feeding apparatus, when small-sized paper such as a postcard is fed, air blown by the paper separation is applied from the rear end of the stacked paper. By blowing to the front end, the top layer of paper will be exposed and the top layer of paper will be exposed, and the press of the second and subsequent sheets will be weakened. The paper overcomes the paper contact that has fallen, and several papers are overlapped and fed at once to the space between the paper feed roller and the feed roller.

The present invention has been made in view of the above points, and an object of the present invention is to provide a sheet feeding device capable of reliably feeding stacked sheets one by one.

[0006]

In a paper feeder configured to feed out stacked sheets of paper that have been separated by sheet separation, a sheet is fed in accordance with an upright posture attached to the front surface of an upper end portion of the stacked sheets and sheet feeding. A plate-shaped paper contact that rotates between a falling posture and a falling posture is provided on the front side of the paper contact. formed substantially perpendicularly to the paper, the sheet lay is laid down
When in the posture, the upper end of this paper contact surface is loaded
It projects above the top of the paper and
And the uppermost surface of the loaded paper
The upper surface of the paper contact surface on the stacking paper side was formed in a substantially U-shaped cross section toward the rear side of the paper such that the angle formed by the paper contact surface was obtuse .

[0007]

The loaded paper is separated by the air blown by the paper separation while being restrained from moving by the paper abutment attached to the paper end, and then sent out and transported forward. The transported paper has its front end captured by, for example, a rotating paper feed roller and a feed roller, and is sent out onto a paper feed tape to be transported. Since the paper pad is formed in a V-shape in cross section, the movement of the paper is reliably restricted, and the paper pad does not get over the paper pad.

[0008]

1 and 2 show an embodiment of a paper feeder according to the present invention. FIG. 1 is a schematic side view of the paper feeder, and FIG. 2 is an exploded cross-sectional view near one frame. In the drawing, paper 1 is stacked on a paper stack (not shown) which is driven up and down by a driving device, and behind the upper end of the stack paper 1,
The paper separation 2 connected to the pressurized air source is disposed with the air ejection hole directed toward the upper end of the stacking paper, and the upper layer of the stacking paper 1 is blown by blowing air from the paper separation 2. It is configured as follows. Above the loading paper 1, a suction port 3 of a sucker device connected to a suction air source is provided.
It is movably supported in the up-down direction and the front-back direction, and the suction port 3 that has descended and sucked the uppermost layer of paper 1 rises and moves forward, so that the paper 1 is sucked one by one from the upper layer. It is configured to be transported forward.

On the other hand, in front of the upper end of the stacked paper 1,
The paper feed roller 4 has bearings 6 at both ends on left and right frames 5.
A sprocket 7 that is drivingly connected to the driving side is fixed to an end of the shaft. By doing so, the paper feed roller 4 is configured to be driven from the driving side and rotate counterclockwise in the drawing . An arm shaft 8 is rotatably supported above the stacked paper 1 via a bearing 9, and a plurality of sets of arms 10 are provided on the arm shaft 8. They are axially mounted in parallel in the axial direction. Numeral 11 denotes a lever pivotally attached to the free end of each arm 10 by a pin 12 so as to be swingable. The free end of each pair of levers 11 has a peripheral surface in contact with the peripheral surface of the paper feed roller. A plurality of paper feed rollers 13 are pivotally mounted. An adjusting screw 14 is screwed into a screw hole of the member 10 a protruding horizontally from the boss of the arm 10, and the tip of the adjusting screw 14 is brought into contact with the end of the lever 11 on the side of the roller 13. The contact pressure of the paper feed roller 13 with respect to the paper feed roller 4 is adjusted by rotating the adjustment screw 14.

Further, in this device, both ends of the bearing 15 are provided.
A hollow shaft 16 rotatably supported by the shaft is disposed between the upper end of the stacking paper 1 and the paper feed roller 4 while being restricted from moving in the axial direction by a collar 17. A plate-shaped paper pad 18 is screwed to 16. The paper contact 18 is bent toward the rear side of the paper 1 and has a U-shaped cross section. As shown by a solid line in FIG. It is configured to rotate together with the hollow shaft 16 between a laid-down posture in which the paper 1 escapes as shown by a chain line. Reference numeral 19 denotes a bearing that supports the central portion of the hollow shaft 16.

The operation of the paper feeder configured as described above will be described. When the paper feeding operation is started, for example, the paper 1 loaded on the paper stacking platform is separated by the air blown by the paper separating unit 2 while being restricted from moving by the paper pad 18 attached to the paper end. Thereafter, the air is sucked by the suction port 3 which moves up and down, and is transported forward by the movement of the suction port 3. The transported paper 1 is caught at the front end by a paper feed roller 4 that is driven and rotated from the driving side and a paper feed roller 13 that is rotated while being in contact with the paper, and is sent out onto a paper feed tape and transported. . The paper contact 18 falls down as indicated by a chain line in FIG. 1 by a driving mechanism (not shown) in accordance with the paper feeding. The movement of the paper 1 is reliably regulated,
Never get over the paper rest 18.

[0012]

As is apparent from the above description, according to the present invention, in a paper feeder configured to send out stacked papers separated by sheet separation, the paper is attached to the front surface of the upper end of the stacked paper. A plate-shaped paper contact that rotates between the raised position and the falling position in which the sheet rests on the front side of the paper in accordance with the paper feeding, and when the paper contact is in the standing position, A paper contact surface abutting on the edge is formed substantially perpendicular to the stacking paper, and when the paper contact is in a falling posture,
The upper end of this paper contact surface is above the top surface of the stacked paper.
At the top of the paper contact surface
The angle between the paper side and the top of the stacked paper is obtuse.
As will, by forming the surface of the stacked sheet-side of the upper end portion of the paper abutting surface on the paper on the rear side headed cross section ho me-shape, the paper under the paper is fed during paper feeding The forward movement is restricted by the action of the folded part of the paper contact, and the paper does not get over the paper contact. Therefore, the paper is surely fed one by one between the upper and lower rotating bodies. This reduces the amount of waste paper generated.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a sheet feeding device.

FIG. 2 is a developed cross-sectional view near one of the frames.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Paper 2 Paper separation 3 Suction port 4 Paper feed roller 5 Frame 13 Paper feed roller 15 Bearing 17 Hollow shaft 18 Paper contact

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Masaaki Ishida 4-5-1, Higashi, Toride-shi, Ibaraki Pref. Komori Corporation Toride Plant (56) References JP-A-64-53939 (JP, A) 54-144671 (JP, A) Actual opening 48-48,503 (JP, U) Actual opening 63-73236 (JP, U) Actual opening 2-10333 (JP, U) Actual opening 63-76734 (JP , U)

Claims (1)

(57) [Scope of request for utility model registration] 1. A paper feeder loaded on a table to feed out paper separated by sheet separation, wherein the paper is fed according to an upright posture attached to a front surface of an upper end portion of the loaded paper and a paper feed. A plate-shaped paper contact that rotates between a falling posture and a falling posture is provided on the front side of the paper contact. When the paper contact is in the upright posture, the paper contact surface that is in contact with the loading paper edge of the paper contact is loaded. It is formed almost perpendicular to the paper, and this paper contact
The upper edge of the paper contact surface is
It is projected above the top surface and
Between the top side of the stacking paper and the top side of the stacking paper.
A sheet feeding device characterized in that the upper surface of the paper contact surface on the stacking paper side is formed in a substantially C-shaped cross section toward the rear side of the paper so that the angle of the paper contact surface is obtuse .