JPH033836A - Sheet separating device - Google Patents

Abstract

PURPOSE:To positively separate a sheet even when the sheet is difficult to be separated due to static electricity by forming a claw from an immovable guide member having an edge and a taper, and a separating member capable of being freely rotated. CONSTITUTION:When a sheet must be separated, a claw member 2 is horizontally displaced to the notch of a lowermost sheet 1C, and the lowermost sheet 1C falls by its dead weight. Then, the claw member 2 is displaced to the notch on the opposite side of a next sheet to drop the next sheet 1D. At this time, when the lowermost sheet adheres to the just upper sheet due to static electricity, moisture, etc. and does not fall by its dead weight, the edge 23a of an immovable guide member of the claw member 2 is entered into between the lowermost sheet 1C and the just upper sheet 1D to slightly separate the end part 1c of the lowermost sheet 1C from the upper sheet 1D by the edge 23a and a successive tapered part 23c. When the claw member 2 is displaced further, a separating part 24B is advanced to separate the lowermost sheet 1C by its separating face 24b while it is tilted to about 45 degrees, and completely separate the lowermost sheet from the upper laminated sheet body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a sheet-feeding device that separates the lowest sheet of a stack of sheets one by one from a stack of sheets. .

(Prior Art and Background of the Invention) It is necessary in various devices to separate the lowest sheet material one by one from stacked sheet materials, and various devices have been proposed for this purpose. and is being put into practical use.

Among these types of devices, there is one in which the lowest sheet of the sheets stacked inside the case is pushed out through a slit provided in the case using a claw that pushes out in the lateral direction. However, such a device has the following problems.

In other words, in order to push a single sheet out of the case by hooking the claw onto the edge of the sheet and moving the claw, the length of the claw must be smaller than the thickness of the sheet. However, when doing this, if the edge of the sheet against the claw is curved upward, the claw may not catch the edge of the sheet and the sheet may not be pushed out.

In addition, since it is difficult to maintain the length accuracy of the claws for extremely thin film-like sheets, in addition to the above-mentioned missed swings, we also remove the Lin-1 material that has come off the claws during conveyance and is in a state of missed swings. Sometimes the sheets are transported in piles, and in either case it is difficult to reliably separate them continuously.

Therefore, a method that could be considered is to provide alternate cutouts in the sheets and use these cutouts to separate the sheets. That is, a sheet-like object with a notch provided at a first position on the - side, and a sheet-like object of approximately the same size as the sheet-like object provided with a notch at a second position different from the first position. A laminate formed by stacking a plurality of layers alternately is supported from below by a claw, and the claw is reciprocated horizontally between the positions of both the notches,
It is conceivable to separate the sheet-like materials located at the bottom of the laminate by dropping them one by one.

According to such a separation (single-sheet) method, it is not necessary to make the length of the nail smaller than the thickness of the sheet, and it is possible to easily separate the sheet into sheets.

(Problem to be Solved by the Invention) However, even in the above method, when the sheets are charged, the stacked sheets attract each other by group electricity, and even if they are located in the claw or notch, the bottom sheet naturally It may not fall and it may not be possible to reliably produce a single leaf.

In view of this point, it is an object of the present invention to provide a single-fed apparatus of the type described above that can reliably separate sheets even if the sheets are charged.

(Means for Solving the Problems) The single wafer apparatus of the present invention is such that, in the single wafer apparatus of the above-mentioned type, the pawl member is placed between the sheet-like objects overlapping at the forward ends of the reciprocating movement in each direction of movement. An immovable guide member having a pair of entering edges and a taper following the edges, and a guide member that enters into the gap between the lowest sheet-like material spread by the guide member and the laminate thereon, following the guide member. , and a separating member rotatable to an oblique angle in both directions of the reciprocating motion in order to separate the lowermost sheet-like material from the laminate above it.

(Operations and Effects) In the single-wafer device of the present invention, since the claw is composed of an immovable guide member having an edge and a taper, and a rotatable separation member in the single-wafer device of the above type, the edge and taper reliably separates the edge of the bottom sheet from the laminate, and then the large separating member separates the entire sheet, so even if the sheets are difficult to separate due to static electricity, sheets can be reliably separated one by one. . Further, since the claw separating member is rotatable, the mold as a whole does not occupy a large space, and there is no problem in terms of space.

(Example) Embodiments of the present invention will be described in detail below with reference to the drawings.

Sheet-like materials (hereinafter simply referred to as "sheets") are listed in Section 14.
], as shown in Figure B, the first one has a notch 1a at one end.
A laminate 1 is formed by alternately stacking a plurality of sheets LA and a second sheet 1B having a cutout 1b at an end opposite to this one end. (Figure 1C.

(See FIG. 2) This laminate 1 is housed in a case 10 as shown in FIG. 3, for example. In the example shown in FIG. 3, the laminate 1 is stored diagonally with one end supported by the claw 2, and one dropped sheet IC is pushed out and pushed out by the claw 3 onto the bottom side 1hj of the case 0. It is extruded from the formed ribs l-1 and Oa.

As shown in an enlarged view in FIG. 4, the pawl 2 supporting the laminate includes a substantially triangular guide member 23 immovably fixed to the support shaft 22 by a fixed shaft 21, and a guide member 23 fixed to the support shaft 22 within a certain range. and a separating member 24 rotatably provided.

The immovable guide member 23 has a pair of edges 23a and 23b that enter between sheets overlapped at both ends, which become the tips in the direction of movement when the claw 2 reciprocates left and right, and this edge 23a.
, 23b are followed by tapers 23c and 23d.

The rotatable separation member 24 is a protrusion 2 whose rotation is restricted by abutting against a stopper surface 22a (the opposite side I/flange surface is not shown) of a rotation restriction portion 22A provided on the support shaft 22.
4a, and is provided with a separation section 24B that does not push the sheet apart and has separation surfaces 24b on both sides. And this separating section 2
The stopper surface 22a and the protrusion 24a restrict the rotation so that the holder 4B can rotate up to approximately 45 degrees left and right.

Figures 5A, 5B, and 5C show how the claw member 2 configured in this manner separates the bottom sheet from the sheet stack. When not separated, the claw member 2 is located at the center of the laminate and supports the laminate 1 from below. (FIG. 5A) When separating, the claw member 2 moves horizontally to the notch in the bottom sheet IC. As a result, the bottom sheet IC falls under its own weight. (FIG. 5B) Next, the claw member 2 is moved to the notch on the opposite side of the next sheet, and the next sheet 10 is dropped. (Fig. 5C) At this time, if the bottom sheet sticks to the sheet immediately above due to static electricity or moisture and does not fall under its own weight, the 6A, 6B,
As shown in Fig. 6C, the edge 23a of the immovable guide member 23 of the claw member 2 is connected to the bottom sheet [C] and the sheet immediately above it].
Taper 2 is inserted between D and continues to the edge 23a.
3c, attach the end 1c of the bottom sheet IC to the second sheet I.
Separate from D.

(FIG. 6B) When the claw member 2 is further moved, the separating portion 24B is moved at approximately 45 degrees as shown in FIG. 6C.
The separation surface 241) allows the bottom seam 1-
1. The process proceeds while separating C, and reliably separates the bottom sheet IC from the upper sheet stack 1.

In this way, the pawl member 2 advances to near the center of the sheet, thereby supporting the stack of sheets 1 above.

Then, in order to separate the next sheet 1D, the claw member 2 further advances to the opposite end and enters the notch in the next sheet 1D, causing this sheet ID to fall. At this time too,
The pawl member 2 returns to the center from the notch and ensures separation by the action of the guide member 23 and the separating member 24, similar to the operation described above.

In the above embodiments, the notches ia and ib are formed at the corners of the sheet, but this is not necessarily necessary; for example, the notches may be formed at the center of the side edges. In this case, the claw member will reciprocate passing near the center of the sheet. Further, the shape of the notch may be any shape as long as the nail can fit therein.

Further, the shapes of the guide member 23 and the separating member 24 of the claw member 2 are not limited to the illustrated example, and may be modified in any way as long as each achieves the intended effect. Needless to say.

[Brief explanation of drawings]

1A and 1B are plan views showing the shapes of sheet-like objects to be laminated, FIG. 1C is a plan view showing the form in which they are stacked, FIG. 2 is a perspective view thereof, and FIG. FIG. 4 is a perspective view showing an example of the claw member of the sheet wafer apparatus of the present invention; FIGS. Figures 6A, 6B, and 6C are front views showing how the bottom sheet of the laminate is separated by gravity by the claw member of the leaf device. FIG. 3 is a partially enlarged front view showing the state of separation into two parts. 1... Sheet laminate 2... Claw member 23... Guide portion 24... Separation member 23a, 23b =
・Edges 23c, 23d = Taper 1 No. 5B Fig. 303- Fig. 6B Fig. 6C Fig. 4-Cho 1- Thread 1: Neyama H 2 ((Spontaneous correction) Name of July 1999 invention Sheet-like material Sheba Station iα What is the relationship between the 1st case to be amended Patent applicant location 210 Nakanuma, Minamiashigara City, Kanagawa Prefecture Name (
520) Fuji Photo Film Co., Ltd. 9th

Claims (1)

[Claims] A sheet-like object having a cutout at a first position on one side and a sheet-like object having a cutout at a second position different from the first position and having approximately the same size as the sheet-like object are alternately arranged. By supporting a laminate formed by stacking a plurality of sheets on top of each other from below and reciprocating horizontally between the positions of both the notches, the sheet-like material located at the bottom of the laminate is removed one by one. In a sheet-fed device equipped with a pawl member that is separated by dropping, the pawl member has a pair of edges that enter between sheet-like objects overlapping at the forward ends of each traveling direction of the reciprocating motion, and a taper that follows the edges. following the guide member, enters into the gap between the lowermost sheet-like material spread by this guide member and the laminate above it, and further spreads the lowermost sheet-like material into the laminate above it. 1. A single-fed device for sheet-like materials, comprising a separating member that is rotatable to an oblique angle in both directions of the reciprocating movement in order to separate the sheet-like material from the body.