JPH0318449Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a paper sheet conveying device that transports and supplies paper sheets to a paper sheet processing device that performs printing, reading, and various other processes on paper sheets.

Conventionally, in this type of paper sheet conveying device, for example, a double feeding detection means is provided to detect double feeding so that printing or other processing is not performed on the paper sheets in a double feeding state. By extracting the signal from the detection means, only the paper sheets that should be correctly fed are transported without stopping the various processing operations, and the paper sheets that are erroneously fed are temporarily stopped until the processing is completed. There is a known double-feed prevention mechanism in which the temporary stop is canceled in response to the processing end signal, and the erroneously fed paper sheets are transported from the stopped position and processed. There is.

However, as shown in FIG.
It has a conveyance system that conveys the paper sheets B below the processing head C for processing, reversely conveys the processed paper sheets B, and then conveys them to the discharge port D. In the case of a device that can hold the processed paper sheets on standby and perform various processing operations without stopping, the waiting paper sheets may be mistakenly fed by the processed paper sheets that are being conveyed in the opposite direction. As a result, the paper sheets that have been erroneously fed and are waiting are caught between the processed paper sheets and the paper feed port of the paper sheet storage section A. There is a problem that it becomes unusable due to creases such as wrinkles.

This idea was created in view of the above problems.
By providing a fourth conveyance path where processed paper sheets are temporarily evacuated before heading to the ejection port, there is no possibility that the processed paper sheets may be erroneously fed and transferred to the first conveyance path by the preceding paper sheets that are sent later after processing. It is an object of the present invention to provide a paper sheet conveying device in which paper sheets left on a path are not damaged such as wrinkles.

Hereinafter, the present invention will be explained based on FIGS. 2 to 4.

FIG. 2 shows an embodiment of the paper sheet conveying device according to the present invention.

The device uses rubber with an asymmetrical outer shape that can adjust the pressing force on a part of the outer periphery of the roller in order to reliably separate stacked cards, postcards, envelopes, banknotes, and other paper sheets from Group B. The separation mechanism includes a protruding wood crawler _R1 , a feed roller _R2 , and a gate roller _R3 .

The paper sheets B ₁ and B ₂ that are simultaneously fed and overlapped from the paper sheet storage section A into which the paper sheets B can be fed one by one by the separation mechanism are transferred to the first conveyance path. The conveyor belt V ₀ stretched between the feed roller R ₂ and the roller R ₆ forming the conveyor roller R ₄ and
Passes between conveyor belt V ₁ stretched between R ₅ ,
Conveyance rollers that also form the first conveyance path
A conveyor belt V ₂ stretched between R ₇ and R ₈ and feed rollers R ₉ , R ₁₀ , which are in rolling contact with this conveyor belt V ₂ ,
Sent during R ₁₁ .

Therefore, first, the double feed detection means _G1 and _G2 , which are provided with a width slightly wider than the width of the paper sheet B, detect whether or not there is a double feed. Paper sheet B ₁ is rotated by turn roller R ₁₂ , which will be described later.
By stopping the conveyor belt V 2 , the incorrectly fed paper sheet B ₂ is made to temporarily stand by on the conveyor belt V ₂ , while the correctly fed paper sheet B ₂ is stopped. Turn roller R ₁₂ , of which only _one is disposed at a branch point, connects two pairs of rollers R ₁₄ , R ₁₅ and
Transport to R ₁₆ and R ₁₇ . At this time, the first switching lever _L1 is switched counterclockwise from the illustrated state, and the second switching lever _L2 is in the state shown by the solid line.

and the above two pairs of rollers R ₁₄ , R ₁₅ and R ₁₆ ,
After R ₁₇ brings the paper sheets B ₁ into contact with the stopper S and aligns them, the processing head C starts processing on one side of the paper sheets B ₁ . After the processing is completed, the processed paper sheet B ₁ is transferred to the pair of rollers R ₁₆ , R ₁₇ and
R ₁₄ , R ₁₅ , and further reverse conveyance by the reverse rotation of turn roller R ₁₂ . In this case, processed paper sheets
B ₁ is guided by the second switching lever L ₂ that remains in the state shown by the solid line and the first switching lever L ₁ that remains as shown, and the transport belt V ₂ of the first transport path. A conveyor belt V ₃ stretched between conveyor rollers R ₁₈ and R 19 and a conveyor belt _{R 20 forming} a fourth conveyance path which is provided so as to merge at a new branch point without returning to the top. After being temporarily stored between the conveyor belt V4 stretched between the conveyor belt _R21 and the conveyor belt _V4 , the next processing operation is started.

In other words, the erroneously fed paper sheets B ₂ that were waiting on the conveyor belt V ₂ in the previous process, or the new paper sheets from the paper sheet storage section A if there was no double feeding in the previous process. B is transported below the processing head C. At this time, the first switching lever _L1 is rotated counterclockwise from the illustrated state. The second switching lever _L2 is kept as it was, that is, in the state shown by the solid line in the figure.

Following this conveyance operation, the second switching lever _L2 is switched from the state shown by the solid line in the figure to the state shown by the dotted line, and the first switching lever
L ₁ returns to the illustrated state, and the paper sheet B ₁ that was accommodated in the fourth conveyance path is guided by the second switching lever L ₂ and transferred to the conveyance roller R ₂₂ that constitutes the third conveyance path. and the conveyor belt _V5 and rollers _R24 to _R26 stretched between the discharge port D and _R23 .
It is transported to

In the figure, _Y1 to _Y4 are conveyance guide plates.

Note that the path length l ₀ of the fourth conveyance path is set to a length that can accommodate double-fed paper sheets B, for example, two sheets side by side, as shown in FIG. This prevents paper sheets from being left on the second conveyance path in the unlikely event that both the separation mechanism and the double-feed prevention mechanism are not operated correctly and the sheets are conveyed under the processing head in a double-feed state. It is designed so that it will not interfere with the next processing operation.

Further, the processed paper sheets stored in the fourth transport path are transferred to the third transport path by a transport completion signal from the first transport path to the second transport path.
transport to the fourth transport route, or
A delay mechanism, such as a rotary clutch, is provided between the drive system of the first conveyance path and the drive system of the first conveyance path, and when the first conveyance path has conveyed a predetermined amount of sheets, the fourth conveyance path It is possible to convey the article to the third conveyance path and discharge it in a delayed state by a delay mechanism capable of transmitting a driving force.

Furthermore, as shown in Fig. 4, if the conveyance path is taken as shown in A, the processed side of the paper sheet B will face downward, but by using the fourth conveyance path as the sub-conveyance path. This not only solves the above-mentioned conventional problems, but also makes it possible to transport paper sheets B with the processing side facing upward, in the same way as when the transport route is taken as shown in B, without reverse transport. .

As described in detail above, in the paper sheet conveyance device that constitutes the conveyance system that discharges the processed paper sheets after once conveying them in the reverse direction, when the processed paper sheets are conveyed in the reverse direction, the paper sheets are By creating a new conveyance path for accommodating paper sheets, paper sheets that have been processed as before are temporarily held by the double-feed prevention mechanism, and erroneously fed sheets are moved to the paper sheet storage section It is possible to solve the problem of paper sheets causing creases and the like, making them unusable. Moreover, by using this new conveyance route, the processed side of the paper sheet can be reversed, so that the processed side faces upward. It is also possible to take out paper sheets in this state.

[Brief explanation of the drawing]

FIG. 1 is a diagram for explaining a conventional conveyance system, FIG. 2 is a side view showing an embodiment of the paper sheet conveyance device according to the present invention, and FIG. 3 is a sub-conveyance path section in FIG. 2. The side view of FIG. 4 is a diagram for explaining the conveyance system according to the present invention. A...Paper sheet storage section, B...Paper sheets, C...Processing head, D...Discharge port, _L1 ...First switching lever, _L2 ...Second switching lever,... First conveyance route, ...second conveyance route, ...third conveyance route, ...fourth conveyance route, ...branch point.

Claims (1)

[Scope of Claim for Utility Model Registration] A multi-feed system that sends paper sheets from a paper sheet storage section through a separation mechanism and prevents double feeding of paper sheets using a double-feed detection means and a double-feed signal from the detection means. A first conveyance path having a feed prevention mechanism, and a second conveyance path that receives paper sheets from the first conveyance path, sends them to a processing head such as printing, and processes them, and reversely conveys the processed paper sheets. and a third conveyance path that guides the processed paper sheets that have been reversely fed through the second conveyance path to a discharge port, and each of these first to third conveyance paths A paper sheet conveyance device in which the processed paper sheets are temporarily evacuated, a fourth conveyance path is provided, and the fourth conveyance path is merged with the branch point, and , At the branching point, the sheet is guided forward from the first conveyance path to the second conveyance path, and the sheet is switched in a timely manner to guide the sheet backward from the second conveyance path. a first conveyance path for cutting off objects such as the like from the first conveyance path and guiding them to the fourth conveyance path;
a switching lever, which is also provided at the branching point, and is configured to block forward-feeding sheets from the first conveyance path and reverse-fed sheets after being processed from the third conveyance path, and to and a second switching lever that is switched to guide the paper sheets that have been evacuated to the fourth conveyance path toward the discharge port to the third conveyance path. Conveyance device.