JPS6371044A - Paper sheet takeout device - Google Patents

Abstract

PURPOSE:To reduce disorder at the leading end of the following paper sheet during take-out of a paper sheet, by supporting a means for preventing take-up of two sheets, movably on two pairs of link mechanisms journalled to a support bed, through the intermediary of a support arm. CONSTITUTION:A leaf spring member 8 constituting a means 5 for preventing take-up of two sheets, is moved, maintaining its horizontal condition, so that the forward end 8a of the leaf spring member 8 is pushed out obliquely in the left downward direction by means of the leading end of mail P. Since the force of a spring simply exerts a force for pushing out the leaf spring member 8 toward a takeout belt 4, the leaf spring member 8 strikes the following mail P at an angle of about 90 deg., and further, due to the movement of the forward end 8a of the leaf spring member 8, a gap G having an initially set value substantially set for minimum thickness mail P may be made to be large although a displacement L in the take-out direction is small. Accordingly, disorder at the leading end of the following mail P may be reduced.

Description

[Detailed description of the invention] [:9! (Industrial Application Field) The present invention is directed to the processing of paper sheets stacked together in large numbers, especially paper sheets that vary in thickness, hardness, or size, such as mail. The present invention relates to an improvement of a paper sheet take-out device used for sequentially taking out paper sheets and supplying them to a paper sheet processing device or the like.

(Prior Art) Conventionally, in a paper sheet processing device 1 of this type, for example, a paper sheet retrieval device incorporated in an automatic mail sorting machine installed in a mail sorting center in a post office, etc. 8th
The configuration is as shown in the figure.

That is, in the figure, reference numeral 1 denotes a backup member constituting a supporting means, and a large number of paper sheets 1, for example, of various thicknesses, hardnesses, or sizes, are stacked together in an upright position in the horizontal direction by this backup member 1. It is possible to support the mail P and push it out in one direction.

On the other hand, on one side in the direction of movement by the backup member 1, a paper sheet take-out and separation means 2 is arranged, and this paper sheet take-out and separation means 2 includes a chamber 3 which is evacuated by a vacuum decompression device (not shown); It consists of a take-out belt 4 that runs over this chamber 3 by a drive device (not shown), and the chamber 3 attracts and holds the outermost layer of mail P, and the take-out belt 4 transports the mail to separate them one by one. It is designed so that it can be taken out downstream.

Further, on the downstream side of the paper sheet removal and separation means 2, there are two
A sheet removal prevention means 5 is installed, and this double sheet removal prevention means 5
is a support arm 6 and a guide member 7 attached to this support arm 6.
The support arm 6 is attached to a fixed frame 10 erected on a support stand 9 with a support shaft 11 as the center. At the same time, the urging force of the spring 12 always urges the mail P in the upward direction opposite to the take-out direction, and the stopper member 13 provided on the support base 9 The location can be regulated.

In such a conventional paper sheet retrieval device, in particular, in the double sheet takeout prevention means 5, when taking out a thick mail P, for example, as shown in FIG. As the displacement of the tip 8a of the leaf spring member 8 increases, the gap G between the tip 8a of the leaf spring member 8 and the take-out belt 4 widens, which may disturb the tip of the subsequent mail P.
Or, when the leaf spring member 8 is likely to be caught by the tip 8a of the leaf spring member 8 and the leaf spring member 8 is about to return to its original position,
By pinching the tip of the subsequent mail P between the tip 8a of the leaf spring member 8 and the take-out belt 4, the pressure between the sandwiched mail 2 is increased, which not only causes double-mailing but also This may damage the mail P.

Further, as described above, the large rotation of the support arm 6 that supports the leaf spring member 8 means that the leaf spring member 8 and the mail piece P
The angle θ formed by this tip becomes smaller than 90°, causing a fundamental problem in which the double-sheet removal prevention effect decreases.
Disturbance of the leading edge of the subsequent mail P disturbs the take-out pitch, and the chamber 3 tends to pick up the second mail P and pick up two mails.

(Problems to be Solved by the Invention) In such a conventional paper sheet take-out device, no such problem occurs when taking out sheets of uniform thickness, but for example, Various thicknesses such as mail, especially
When removing thick objects, there is a problem in that the above-mentioned problems are likely to occur.

The present invention has been made under the above circumstances, and its purpose is to reliably prevent the occurrence of failure to take out paper sheets and the occurrence of double-sheet pick-up caused by changes in the size of paper sheets, especially the thickness. However, it is an object of the present invention to provide a paper sheet retrieval device capable of performing a stable retrieval operation.

[Configuration of the Invention (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a support means capable of supporting and moving a large number of paper sheets in a stacked state by extrusion; Paper sheet removal in which the endmost layer of paper sheets is adsorbed and held in a chamber disposed on one side in the moving direction of the support means, and the paper sheets are separated and taken out one by one by the conveyance of a take-out belt running on this chamber. In a paper sheet takeout device comprising a separating means and a double sheet taking prevention means installed downstream of the sheet taking out and separating means, the double sheet taking prevention means is pivotally supported on a support base. It is configured to be movably supported by two pairs of link mechanisms via support arms.

(Function) That is, by having the above configuration, the present invention has the following features:
Since the two-piece removal prevention means is movably supported via the support arms by two pairs of link mechanisms that are pivotally supported on the support base, the amount of displacement of the support arms due to the rocking motion of the link mechanisms is reduced. Since the paper sheet can be made small, it is possible to reduce the disturbance of the leading edge of the following sheet when taking it out, and since the return range is also small, it is possible to reliably prevent double sheet taking. , paper sheets can be taken out without being affected by changes in the thickness of the paper sheets.

It becomes possible to take out the material stably.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings shown in FIGS. 1 to 6. In the illustrated embodiment of the present invention, the same reference numerals are used for parts having the same configuration as those of the conventional apparatus shown in FIGS. 7 and 8, and the explanation thereof will be omitted.

FIGS. 1 to 3 schematically show an embodiment of the paper sheet takeout device according to the present invention, in which the double sheet taking prevention means 5
When supporting the support arm 6 constituting the support stand 9, the support arm 6 is swingably supported via a link mechanism 20, which will be described later.

That is, the link mechanism 20 includes two pairs of links 25, 26 and 27.2, which are mutually supported by support shafts 21, 22, 23, and 24 between the support arm 6 and the support stand 9.
8, and a spring 12 for regulating the initial position is connected between the links 25 and 26 on one side, so that the force in the ejecting direction is applied to the composite of two movements in the direction perpendicular to the ejecting direction. This is what happens. In the figure, numeral 30 denotes a feeding mechanism, which feeds paper sheets, such as mail P, taken out by a gripping roller 31 and a pinch roller 32 to the next process.

According to the above-mentioned configuration, as shown in FIG. 3, when taking out a thick mail P, the leaf spring member 8 constituting the double-sheet prevention means 5 moves while maintaining a horizontal state. , its leading end 8a is moved so as to be pushed diagonally downward and to the left by the leading end of the mail P. However, due to the spring force of the spring 12, a force is acting on the plate spring member 8 to simply push it toward the take-out belt 4 side, so that it hits the following mail P at approximately 90''.

Moreover, by the movement of the tip 8a of the leaf spring member 8, it is possible to increase the gap G whose initial setting value is set to about the minimum thickness of the mail P, although the displacement in the take-out direction is small. Therefore, as compared with the conventional apparatus shown in FIG. 8, the disturbance at the leading edge of the subsequent mail P can be reduced. Also, at this time, the leaf spring member 8
Since it maintains a nearly horizontal state, it increases the effect of preventing the subsequent mail P from taking two sheets, and thereby,
Even if the spring force of the spring 12 is weak, it is possible to sufficiently exert the effect of preventing double-sheet pick-up, and it is possible to prevent thick mail P.
The mail P can be easily taken out and the mail P will not be damaged.

In addition, in the above embodiment, the paired links 25.
Although the lengths of 26 and 27.28 were different (link 25
．． As shown in FIG.
Length of 7 = length of link 26.28,
The movement of the link mechanism 20 in this case is parallel movement.

Further, as shown in FIG. 5 and FIG. 6 as another embodiment, in place of the guide member 7 and leaf spring member 8 that constitute the double-separation preventing means 5, a one-way clutch 41 is used in which the rotational direction is unidirectional. It is also possible to use a roller 40 that is regulated to

In addition, it goes without saying that the present invention can be modified in various ways without departing from the gist of the invention.

[Effects of the Invention] As is clear from the above description, according to the present invention, there is provided a support means capable of supporting and pushing out a large number of paper sheets in a stacked state, and a support means on one side of the support means in the moving direction. 20 paper sheets; 20 paper sheets; 20 paper sheets; In a paper sheet retrieval device comprising a double sheet taking prevention means installed on the downstream side of the taking out and separating means, the double sheet taking prevention means is attached to two pairs of link mechanisms supported by support arms on a support base. Because it is supported movably through the link mechanism, the amount of displacement of the support arm due to the swinging motion of the link mechanism can be reduced, which reduces the disturbance of the leading edge of subsequent paper sheets when taking them out. In addition, since the return range of the double-sheet-taking prevention means is small, double-sheet taking can be reliably prevented, and this makes it possible to take out sheets without being affected by changes in the thickness of the sheets. Therefore, it is possible to provide a paper sheet retrieval device which has an excellent effect of being able to reliably take out paper sheets.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view showing an embodiment of the paper sheet retrieval device according to the present invention, Fig. 2 is an enlarged cross-sectional view of the main part taken along the line nn in Fig. 1, and Fig. 3 similarly shows the operating state. FIG. 4 is a schematic side view showing another embodiment of the link mechanism, FIG. 5 is a schematic side view showing another embodiment of the present invention, and FIG. 6 is a schematic side view showing another embodiment of the link mechanism. FIG. 7 is a schematic side view of a conventional paper sheet retrieval device, and FIG. 8 is a schematic side view showing the state of sheet retrieval. DESCRIPTION OF SYMBOLS 1... Supporting means (backup), 2... Paper sheet take-out separation means, 3... Chamber, 4... Take-out belt. 5...Means for preventing double sheet removal, 6...Support arm, 7...Guide member. 8... Leaf spring member, 8a... Tip portion, 9...
...Support stand, 20...Link mechanism, P...Paper sheet. Applicant's Representative Patent Attorney Takehiko Suzue Figure 1 Figure 3 Figure S Figure 7

Claims (2)

[Claims] (1) A supporting means capable of supporting and pushing out a large number of paper sheets in a stacked state, and a chamber disposed on one side of the supporting means in the moving direction to hold the paper sheets in the outermost layer by suction. It also includes a paper sheet take-out and separation means that sequentially separates and takes out the paper sheets one by one by the conveyance of a take-out belt that runs over the chamber, and a double-sheet taking prevention means that is installed downstream of the paper sheet take-out and separation means. In the paper sheet retrieval device, the above-mentioned 2.
A paper sheet retrieval device characterized in that the sheet taking prevention means is movably supported via a support arm on two pairs of link mechanisms pivotally supported on a support stand. (2) The double-sheet taking prevention means is constantly urged toward the take-out belt side of the paper sheet take-out and separation means via the support arm by the urging force of springs attached to the two pairs of link mechanisms, and The paper sheet retrieval device according to claim 1, wherein the initial position relative to the retrieval belt is regulated by a stopper member.