JP2641803B2 - Sorting method and sorting device for sheets under transfer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for accumulating and sorting sheets conveyed side by side in a scale.

[0002]

2. Description of the Related Art In U.S. Pat. No. 4,647,265, an L-shaped temporary receiving claw is arranged at a transfer end of a sheet which is conveyed in a scale shape, and the front end of the sheet is temporarily received by the temporary receiving claw to accumulate subsequent sheets. Then, during this accumulation, a sheet whose number of sheets has already been accumulated is gripped and pulled out from the table placed below the temporary receiving claws with the gripper. When the number of sheets is reached, the accumulation is continued until the number of sheets reaches the number of sheets. When the number of sheets reaches the number of sheets, the temporary receiving claws are immediately advanced to the front end (temporary receiving position) of the upper surface of the accumulated sheet to be continuously transported. The method of resuming the temporary receiving of the incoming sheets is adopted, whereby the quantitative sorting of the sheets arranged and transported in the scale is performed.

[0003]

However, in the above-mentioned conventional method, when the feeding speed is increased, it is difficult to properly set the timing between the first sheet to be conveyed and the temporary receiving claw to be advanced to the temporary receiving position. Causes the first sheet to enter under the tip of the toe due to slippage, or the leading edge of the first sheet collides with the tip of the toe, making it impossible to accumulate properly. Has difficult problems.

[0004]

SUMMARY OF THE INVENTION The present invention provides a novel method and apparatus for accumulating and sorting sheets conveyed in a scale-like manner by a constant number of sheets. That is, the above-described quantitative sorting can be appropriately performed in accordance with the increase in the paper feeding speed. As a means for sandwiching the overlapping portion of the scale-shaped sheet being transported, the overlapping is performed. Stops the transfer of the sheet that is being transported, and causes the subsequent transported sheet to run on the stopped sheet one after another, accumulates the sheet, and releases the stop when the accumulation reaches a desired number of sheets. To continue the transfer of the accumulated sheets,
This method employs a method in which the front end is applied during the transfer and the rear end is pressed to align the ears and transfer to the next step.
When the accumulation of the sheets reaches the desired number, the stop is released, and the overlap and the ear alignment are repeated by sandwiching the overlap portion of the sheet following the accumulation sheet again.

[0005] The sorting device used in the above method is a conveyor for arranging a large number of sheets in a scaly manner and transporting the sheets. A first gate for accumulating; a second gate for preliminarily applying the accumulated sheet which has been stopped by the first gate during the transfer; a rear hit for pressing the rear end of the accumulated sheet to press against the second gate; Consisting of each element.

[0006]

When the sheets are transported side by side in a scale, the front part of the succeeding sheet is superimposed on the rear part of the preceding sheet to form an overlap part, and the overlap part stops the sheet at a fixed position. It is used as a means for accumulating. That is, by sandwiching the overlap portion from the upper and lower surfaces, the overlapped sheets stop against the transfer force, and the sheets following the stopped sheet successively ride on the sheets stopped by the transfer force to accumulate. Is done.

A conveyor is provided as means for transferring the sheet, and a first gate for stopping and accumulating the transfer in cooperation with the conveyor is provided. The sheets are conveyed side by side in a scale shape on the upper surface of the conveyor, and the overlapped sheet is stopped by slipping the upper surface of the conveyor by pressing the overlap portion on the upper surface of the conveyor at the first gate. The above-mentioned accumulation is performed by successively riding on the sheets stopped by the transfer force of the conveyor.

When the accumulated number reaches a desired number, the stop by the first gate is released, the transfer is continued, and
The accumulation is repeated again by immediately sandwiching the overlap portion of the sheet following the accumulation sheet and stopping the transfer of the overlap sheet.

The accumulative sheet formed as described above is brought into contact with the front end of the sheet by pressing the front end of the sheet during the transfer and pressing the rear end. Equipped with a second gate and a back strike as a device for performing the above-mentioned ear alignment,
The sheets accumulated by the first gate are applied to the second gate in advance, and are pressed against the second gate by back-hitting to correct the irregularity of the accumulated sheets.

The first gate, the second gate, and the back tapping are periodically repeated to perform the above-described operations, thereby performing the quantitative division. Each sheet that is placed on a conveyor and transported in a scale-like shape has a variation in the overlap margin of the overlapped part, so if you try to pinch other than the overlapped part, the overlapped part adjacent to the front and back Are close to each other, there is a problem that the rear overlap portion is erroneously pinched, and it becomes difficult to accumulate a fixed amount of sheets. According to the present invention, a sheet to be stopped can be correctly stopped by detecting the leading edge of each sheet and immediately sandwiching the overlap of the leading edge. Also, the overlap portion has a thickness of two sheets, and can be reliably stopped by sandwiching.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to FIGS.

In the present invention, scaly means a state in which a large number of sheets are arranged in a row, with the front lower surface of the succeeding sheet overlapping the rear upper surface of the preceding sheet.

As shown in FIG. 1, for example, a printed belt-like sheet 1 ′ is passed through a cross cutter 2 and cut into a predetermined size, and the cut sheets 1 are sequentially stored in an impeller 3 and transferred to a conveyor 4. Is supplied. The impeller 3 has a large number of blades extending in a direction opposite to the rotation direction on its peripheral surface, and a storage pocket is formed between the blades, and the seat 1 is stored in a state protruding from the storage pocket by a fixed amount. And the impeller 3
Is rotated and the sheet 1 faces the upper surface of the conveyor 4, is sucked by the suction device 5, transferred from the inside of the storage pocket to the upper surface of the conveyor 4, and the state of being arranged in the scale is formed.

The present invention does not require the use of the impeller as described above as means for arranging a large number of sheets in a scale, and does not prevent the formation of the above-mentioned scale by applying various known means.

In this way, a large number of sheets 1 are transported in a scaly manner on the upper surface of the conveyor 4, and as shown in FIGS. The sheet is pinched in the middle of the transfer, and the overlapped sheet is stopped against the transfer force of the conveyor 4.

As means for stopping the transfer, a first gate 6 is provided, and the first gate 6 presses the overlap portion 1a of the sheet 1 on the upper surface of the conveyor, ie, between the first gate 6 and the conveyor 4. , The set of overlapping sheets is opposed to the transfer force of the conveyor, and the transfer is stopped while slipping on the upper surface of the conveyor.

The first gate 6 is provided so as to advance and retreat to a clamping position and a clamping release position at a predetermined timing, as shown in FIG. 2, or is rotated to each of the above positions as shown in FIG. Provide.

For example, FIG. 1 shows a first rotary gate 6 'in which a plurality of first gates 6 are extended in the radial direction. The rotary gate 6 'intermittently rotates at a predetermined timing in a direction synchronized with the conveyor 4, and stops rotating for a certain time when the overlapping portion of the sheet 1 is pressed against the conveyor 4 from the upper surface by the leading end of the first gate 6. I do.

In FIG. 3, the first gate 6 cooperates with a member 6a disposed below the conveyor 4 to pinch the overlap portion 1a of the sheet and stop the transfer. At this time, the member 6a can be operated to a position for holding the sheet and a position for releasing the sheet.

When the transfer of a set of overlapped sheets is stopped against the transfer force of the conveyor 4 as described above, the sheet 1 following the stop sheet is moved by the transfer force of the conveyor to the upper surface of the stop sheet. It is accumulated one after another.

When the number of the accumulated sheets reaches the desired number, the stop by the first gate 6 is released and the accumulated sheets 1
b is transferred forward according to the transfer force of the conveyor 4. FIG.
As shown in (1), the first gate 6 immediately releases the stop and immediately presses the overlap portion 1a of the sheet 1 following the accumulation sheet 1b to restart the accumulation.
During the accumulation of the succeeding sheets, the accumulation sheet 1b is transferred to the front and is separated from the accumulation position, so that a certain interval is formed between the accumulation sheets.

Next, the front end of the accumulated sheet 1b is brought into contact with the second gate 7 during the transfer, and
The rear end of b is pressed by the rear hit 8 and pressed against the second gate 7 to correct the irregularity. With this, cumulative sheet 1
b is flush with its front and rear ends and transferred to the next step. The left and right ends of the accumulation sheet 1b may be aligned by being transported while being regulated by a ruler plate.

In FIG. 1, a second conveyor 9 is arranged at the transfer end of the first conveyor 1, pushers 10 are provided on the second conveyor 1 at intervals, and a terrace 10a projects forward from the top of the pusher 10. By intermittently driving the second conveyor 9, one of the pushers 10 arrives at the transfer end of the first conveyor 1 and stops, and the upper surface of the terrace 10 a of the pusher 10 supports the accumulated sheet 1 b, and In this state, the front gate is applied to the second gate 7, and the ears are aligned by pressing with the back strike 8. After the ear alignment, the front gate by the second gate 7 is released, and the second conveyor 9 is driven. 1b slides down the slope of the pusher 10 and the rear end thereof is pressed by the succeeding pusher 10 and is transferred forward.

As shown in FIG. 2, the second gate 7 is intermittently rotated at a predetermined timing and is operated at the front contact position and the release position. In this case, similarly to the first gate 6, a rotating gate 7 'having a plurality of second gates 7 extending in the radial direction can be formed to perform the above operation.

FIG. 5 shows that the second gate 7 is provided so as to be able to move forward and backward between a front contact position and a release position, and the second gate 7 is moved from the upper side or the lower side of the conveyor 4 to a predetermined timing in front of the accumulated sheet 1b. The advance contact is performed by causing the vehicle to advance.

[0026]

According to the present invention, the overlapped sheet can be reliably stopped by utilizing the overlap portion of the sheet, and the accumulation of the succeeding sheets can be properly induced.

Since the overlap portion having a sufficient area is sandwiched, the stop timing can be easily set, and even if there is a slight timing deviation, there is no stop error, and the accumulation of subsequent sheets can be favorably promoted.

According to the present invention, the above-described method and apparatus properly perform the quantitative classification of the scaly sheet fed at a high speed, and the sheet slips into the toe as in the case of using the conventional temporary receiving claw. It effectively prevents troubles hitting the toes and can effectively follow the speeding up of paper feeding. Each sheet that is placed on a conveyor and scaled and transported has a variation in the overlap margin of the overlap portion,
If you try to pinch in a place other than the overlap part, if the overlap part adjacent to the front and back is close, there will be a problem that the overlap part in the rear will be pinched by mistake It becomes difficult.
According to the present invention, a sheet to be stopped can be correctly stopped by detecting the leading edge of each sheet and immediately sandwiching the overlap of the leading edge. Also, the overlap portion has a thickness of two sheets, and can be reliably stopped by sandwiching.

[Brief description of the drawings]

FIG. 1 is a side view schematically illustrating an apparatus for sorting sheets under transfer according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a first example in which a sheet is stopped in the sorting apparatus.
It is a principal part side view which illustrates a gate.

FIG. 3 is a diagram illustrating a first example in which a sheet is stopped in the sorting apparatus.
It is a principal part side view which shows the other example of a gate.

FIG. 4 is a main part side view showing a state in which after a first gate forms an accumulated sheet in the sorting apparatus, a subsequent sheet is stopped again.

FIG. 5 is a side view showing another example of the sorting device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sheet 1a Sheet overlap part 1b Cumulative sheet 4,9 Conveyor 6 First gate 7 Second gate 8 Back strike

Claims (2)

(57) [Claims] The present invention is to stop the transfer of an overlapped sheet by pinching an overlap portion of a sheet being conveyed in a scale-like manner, and to successively transfer sheets following the stopped sheet by the transfer. When the cumulative number of sheets reaches the desired number, the stop is released and the transfer of the cumulative sheets is continued,
The accumulation is started again by pinching the overlap portion of the sheet following the accumulation sheet, while the accumulation sheet is applied in the middle of the transfer, and the rear end of the accumulation sheet is pressed by pressing the rear end of the accumulation sheet. Separating the sheet under transfer, wherein the transfer is performed to the next process after the ear alignment. 2. A conveyor for transporting a large number of sheets arranged in a scale on the upper surface, and stopping the transport while pressing the overlap portion of the sheets being transported on the conveyor against the conveyor to cause the upper surface of the conveyor to slip and stop the subsequent operation. A first gate for accumulating sheets, and a second for preliminarily applying the accumulated sheets, which have been stopped by the first gate, during the transfer.
A sheet sorting apparatus comprising: a gate; and a rear hit for pressing a rear end of the accumulated sheet and pressing the same against a second gate.