JPH0229074Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to an improvement of a sheet feeding device used for manual paper feeding.

PRIOR ART As a sheet feeding device for manual paper feeding used in a copying machine or a printing machine, as shown in Fig. A feeding table 1, and a substantially L-shaped guide member 2, which is provided on the table 1 so as to be movable in a direction perpendicular to the sheet feeding direction, and whose interval can be adjusted according to the width of the sheet S. , 2 is known. When feeding the sheet S into the sheet insertion slot with the sheet feeding device having such a configuration, the sheet S is placed on the table 1, and the guide members 2, 2 are moved along the long holes 3, 3. and set the interval to sheet S
After adjusting the width, insert the sheet S toward the sheet insertion slot.
It is necessary to perform an operation of feeding the material straight.

However, the sheet placement surface 1a of the table 1
Since there is a step between the guide members 2 and 2 as shown in FIG. 2, when the sheet S is placed on the table 1 and the guide members 2 and 2 are moved, one side edge of the sheet S is Edge portions 2a of guide members 2, 2,
2a, and the other side end of the sheet S is in contact with the rising portions 2b, 2b of the guide plates 2, 2, and the sheet S is moved in the sheet feeding direction by the movement of the guide members 2, 2. can be compressed and bent at right angles. Therefore, when the sheet S is significantly bent, it is inconvenient that the sheet S must be replaced with another sheet S. Further, if the sheet S is fed into the sheet insertion slot in a folded state, a jam may occur and the copying operation may not be performed smoothly.

Such inconveniences occur when a weak thin sheet is used, or when the sheet S is placed on one of the guide members 2, 2.
This is especially common when adjusting the distance between the guide members 2, 2 after alignment. Further, the above-mentioned inconvenience also occurs in a sheet feeding device in which one of the guide members 2, 2 is fixed and the other moves.

Purpose/Summary of the Invention The present invention includes a sheet feeding table, a concave groove provided on the table in a direction intersecting the sheet feeding direction, and a substantially L-shaped groove movable along the concave groove. In the sheet feeding device equipped with a sheet side guide member, an inclined portion is provided at an edge portion of the L-shaped sheet side guide member on the side that contacts the sheet, the tip portion of which enters the concave groove. According to
It is an object of the present invention to provide an improved sheet feeding device that can eliminate the above-mentioned disadvantages.

Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings.

As shown in FIGS. 3 and 4, the sheet feeding device of the present invention includes a sheet feeding table 1 that is detachably attached to a sheet insertion slot 21 of a copying machine 20.
and substantially L-shaped guide members disposed on the table so as to be movable in a direction perpendicular to the feeding direction of the sheet S, the interval between which can be arbitrarily adjusted according to the sheet width, and which are arranged opposite to each other. 2, 2.

The table 1 is made of a flat and smooth plate material such as a synthetic resin plate, and has both side parts 1b, 1b.
And the rear side part 1c is bent downward. A mounting plate 4 having notches 4a, 4a that engages with a locking member (not shown) provided in a sheet insertion slot 21 of the copying machine 20 is fixed to the front of the table 1. By locking the notches 4a, 4a with the locking members, the table 1 is mounted substantially horizontally to the insertion opening 21. Further, the table 1 is provided with concave grooves 5, 5 in a direction perpendicular to the sheet feeding direction, and elongated holes 3, 3 are bored in the concave grooves 5, 5.

On the other hand, the guide members 2, 2 are disposed facing each other on the table 1 with auxiliary members 6, 6 such as Mylar or flocked cloth interposed therebetween so that the guide members 2, 2 can slide smoothly on the table 1. In addition, the guide members 2, 2
is formed in an L-shape and has rising portions 2b, 2b. Furthermore, the edge portions 2a of the guide members 2, 2,
2a is provided with inclined portions 2c, 2c whose tips are inserted into the concave grooves 5, 5. The inclined portions 2c, 2c may be formed by bending convex portions integrally formed on the edge portions 2a, 2a of the guide members 2, 2 toward the inside of the concave grooves 5, 5, or Triangular prism-shaped ribs are fixedly provided on the edge portions 2a, 2a.

The guide members 2, 2 configured in this manner are arranged to approach or separate from each other on the table 1 in a direction perpendicular to the sheet feeding direction, and will be described in detail below.

FIG. 5 shows the back side of the table 1, and as shown in the figure, the guide members 2, 2 are fixed to the racks 11, 11 by shafts 10, 10 passing through the elongated holes 3, 3. and the guide members 2, 2
The racks 11 and 11 are arranged on the front and back sides of the table 1. The racks 11, 11 that slide in contact with sliding auxiliary members 12, 12 fixedly installed on the back surface of the table 1 are engaged with a pinion 14 that is rotatably provided with respect to the shaft 13 between them. . When the pinion 14 rotates clockwise, the guide plates 2, 2 fixed to the racks 11, 11 move away from each other, that is, toward the outside of the table 1. On the other hand, pinion 1
4 rotates counterclockwise, the guide members 2, 2 move toward each other, i.e., when the table 1
move inward.

When feeding a sheet S toward the sheet insertion slot 21 of the copying machine 20 using the sheet feeding device configured as described above, the sheet S is first placed on the table 1. Next, as shown in Figure 6,
By moving the guide members 2, 2, the rising portions 2b, 2b
Adjust the distance between them to the sheet S width. At this time, the tips of the inclined parts 2c, 2c of the guide members 2, 2 are in the concave grooves 5, 5 and are located at a lower position than the sheet placement surface 1a, and the inclined parts 2c, 2c are in the concave grooves 5, 5. 5, 5, the side edges of the sheet S slide on the slopes of the slopes 2c, 2c while being lifted from below by the slopes 2c, 2c.
Therefore, since the sheet S moves smoothly from the sheet placement surface 1a onto the guide members 2, 2, even if a weak sheet is used, the distance between the rising portions 2b, 2b can be shortened without the sheet S being bent. Can be adjusted to sheet S width. After making such adjustments, the sheet may be fed toward the sheet insertion slot 21.

In the above embodiment, a plurality of concave grooves 5, 5 are provided in the direction perpendicular to the sheet feeding direction, and a plurality of inclined portions 2c, 2c are provided in the guide members 2, 2 accordingly. , Sheet S to be used
If the guide members 2, 2 are relatively stiff, the concave grooves 5, 5 may be made into one and the inclined portions 2c, 2c may be used as guide members 2, 2.
It may be possible to provide one each for each. Further, although the guide members 2, 2 are both movable, it is also possible to have a structure in which one guide member 2, 2 is fixed and the other guide member 2, 2 is movable.

Effects As is clear from the above explanation, the present invention includes a sheet feeding table, a concave groove provided on the table in a direction intersecting the sheet feeding direction, and a table movable along the concave groove. In a sheet feeding device including a substantially L-shaped sheet side guide member, a leading end portion of the L-shaped sheet side guide member is inserted into the concave groove at an edge portion of the L-shaped sheet side guide member on a side that contacts the sheet. Since it is characterized by the provision of an inclined part, when the guide member is moved to adjust the guide position of the sheet, the adjustment can be made without bending the sheet, improving operability and making it very practical. be.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a conventional sheet feeding device, Figure 2 is a perspective view of a conventional sheet feeding device;
3 is a perspective view of the sheet feeding device according to the present invention; FIG. 4 is a perspective view of the sheet feeding device installed in a copying machine; FIG.
The figure is a plan view showing the structure of the back side of the sheet feeding table, and FIG. 6 is a view showing a part of the cross section taken along the line X--Y in FIG. 3. DESCRIPTION OF SYMBOLS 1... Sheet feeding table, 2... Guide member, 5, 5... Concave groove, 2c, 2c... Inclined portion.

Claims (1)

[Claims for Utility Model Registration] A sheet feeding table, a concave groove provided on the table in a direction intersecting the sheet feeding direction, and a substantially L-shaped sheet movable along the concave groove. In the sheet feeding device equipped with a side guide member, an inclined portion is provided at an edge of the L-shaped sheet side guide member on the side in contact with the sheet, the tip of which enters into the concave groove. A sheet feeding device featuring: