JPH05238589A - Method and device for arranging sheet in scalelike state - Google Patents

Abstract

PURPOSE:To realize high speediness of work by utilizing a speed difference between two feed belts and a head thereof so as to prevent nonuniformity of an overlapping part in the case of arranging sheets in a scalelike state. CONSTITUTION:A printed long scaled sheet is cut off in each printing unit by a rotary cutter 11 and successively fed into carry-in ends of high speed feed belts 1, 2 by sheet introducing belts 12, 13. The sheet, in a condition that it is lined up with an equal space in a feed direction, is interposed between the high speed feed belts 1, 2 and transferred to a carry-out end via an overlapping cross feed area 7, and the sheet is fed to a carry-in end of a low speed feed belt 14 from delivery rolls 4, 5. The sheet is surely dropped down to the carry-in end of the low speed belt 14 by heads, formed in the carry-out end of the high speed feed belts 1, 2 and in the carry-in end of the low speed belt 14, and by a sheet pressing down means 28, and by a speed difference between both the belts, a head of the following sheet is surely overlapped with a tail of the preceding sheet.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scale and method for overlapping the head of a trailing sheet with the head of a trailing sheet.

[0002]

2. Description of the Related Art Conventionally, for example, a long sheet printed by a printing machine is cut into sheets and arranged in a scale according to a printing order, and the scale-like sheets are stacked in a required number to form a unit block. The method used for the process is often adopted.

An impeller having a large number of pockets defined by blades is used as a means for arranging the sheets in a scaly shape. The impeller is moved to a lower position of the impeller at a speed lower than the rotational speed of the impeller. A low-speed feed belt is arranged, the seat is sequentially inserted into the pocket at the upper part of the impeller, and a stopper is intervened in the pocket at the lower part of the impeller as the impeller rotates. A method is used that sequentially pushes out from the pocket onto the low-speed feed belt, and overlaps the head of the sheet that is extruded after the tail of the sheet that was extruded earlier due to the speed difference between the impeller and the low-speed feed belt. There is.

[0004]

However, in the above-mentioned conventional example, since the seat in the pocket hits the stopper while the impeller rotates at a high speed, the seat bounces due to the impact at the time of contact and the overlap amount becomes uneven. Have a problem.

Further, since the bounding of the sheet is promoted as the rotating speed of the impeller is increased, there is a drawback that the speeding up has a limit.

[0006]

Accordingly, the present invention provides a method and apparatus for arranging sheets in a scaly form, which solves the above-mentioned problems. As a method therefor, a sheet is fed from a high speed feed belt to a low speed feed belt. While taking steps to transfer to
The trailing edge of the transferred sheet is dropped onto the low-speed feed belt due to the drop formed between the sheet carry-out end of the high-speed feed belt and the sheet carry-in end of the low-speed feed belt. The head of the subsequent sheet supplied from the high-speed feed belt is dropped onto the tail of the preceding sheet dropped on the low-speed feed belt to form an overlap state, and the above operation is repeated to form a scale-like sheet. The method of arranging is adopted.

Further, as the above-mentioned device, a low-speed feed belt for transferring sheets from the high-speed feed belt is arranged at the carry-out end of the high-speed feed belt for nipping and transferring a large number of sheets, and the sheet carry-in end of the low-speed feed belt is arranged. The sheet is arranged at a lower position than the sheet carry-out end of the high-speed feed belt to form a drop between the carry-out end and the carry-in end, and the sheet transferred to the carry-in end of the low-speed feed belt is nipped between the same and the other end. It adopts a configuration in which catch rolls are fed out to.

[0008]

In the present invention, the overlap dimension is set at any time by the speed difference between the high speed feed belt and the low speed feed belt. Further, in the present invention, due to the above-mentioned drop formed between the high speed feed belt and the low speed feed belt, the head of the succeeding sheet is surely dropped on the rear side upper surface of the preceding sheet in the transfer portion to easily form the overlapping state.

To restate, when the sheet is transferred from the carry-out end of the high-speed feed belt to the carry-in end of the low-speed feed belt, the speed difference and the drop effectively work to form the overlap state properly and reliably. ..

Further, since the high-speed feed belt and the low-speed feed belt can form the overlapped state by making the sheet feeding directions the same, it is possible to operate the both belts at high speed, and thus to speed up the work of arranging the sheets in a scaly pattern. Even at a high speed, it is possible to effectively prevent the occurrence of non-uniformity of the overlap dimension as in the case of using the conventional impeller.

[0011]

Embodiments of the present invention will be described below with reference to FIGS.

Reference numerals 1 and 2 are high speed sheet feeding belts,
The inner surface of the high-speed feed belt 1 and the outer surface of the high-speed feed belt 2 are overlapped with each other on the outer peripheral surface of the sheet feed roll 3, and the overlapping of the belts 1 and 2 is formed on the arc surface extending from the side portion to the lower portion of the sheet feed roll 3. The sheet feeding roll 3 is formed while forming the rolling region 6 and maintaining the above belts 1 and 2 in the superposed state.
And is tangentially separated from the vicinity of the lower part of the above to form a crossover region 7.

Distributing rolls 4 and 5 which are elastically in contact with the end of the superposition transverse region 7 are arranged, and the inner surface of the lower belt, that is, one of the high speed feed belts 2 is arranged to the lower delivering roll 5.
The upper belt, that is, the other high-speed feed belt 1 is passed between the feeding rolls 4 and 5 and then traversed continuously at the end of the traverse region 8. It is hung on a turn roll 9 to return to the polymerization start end of the polymerization transfer region 6.

The superposition start end of the high-speed feed belts 1 and 2, that is, the superposition start end of the superposition transfer region 6 is set as a carry-in end of the sheet 10, and the superposition end of both belts 1 and 2, that is, the superposition end of the superposition traverse region 7 is set as the sheet. The discharge end is 10. Therefore sheet 1
0 is inserted from above into the start end of the above-mentioned polymerization transfer region 6,
The sheet 10 is conveyed while being sandwiched between the superposition transfer area 6 and the superposition traverse area 7, and at the carrying-out end, the same sheet 10 is sequentially delivered from the delivery rolls 4 and 5 and transferred to a low-speed feed belt described later.

A rotary cutter 11 is disposed above the polymerization start end of the polymerization transfer region 6, and the polymerization transfer region 6 of the high-speed feed belts 1 and 2 is further provided from the lower outlet of the rotation cutter 11.
The sheet introduction belts 12 and 13 that are vertically superposed and moved toward the start end of the sheet are arranged. For example, a long sheet printed by a printing machine is cut by a rotary cutter 11 for each printing unit, and the superposition transfer is performed. It should be inserted in the area 6.

Reference numeral 14 denotes a low-speed feed belt, and the sheet carry-in end of the low-speed feed belt 14 is arranged adjacent to the sheet carry-out end of the high-speed feed belts 1 and 2, and the high-speed feed belts 1 and 2 are arranged.
The crosswise traverse region 7 is traversed in the same direction.

The sheet carry-out ends of the high-speed feed belts 1 and 2 are arranged at a high position, and the carry-in end of the low-speed feed belt 14 is arranged at a low position to form a drop H between the carry-out end and the carry-in end. For example, a turn roll 15 is disposed below the exit of the high-speed feed belts 1 and 2, that is, on the exit side of the pay-out rolls 4 and 5, and the inner surface of the low-speed feed belt 14 is arranged on the turn roll 15. The roll 15 is hung on and the roll 15 is moved to the other side of the feeding rolls 4 and 5. Therefore, the low-speed feed belt 14 traverses along the lower stage of the traverse region 8 of the high-speed feed belt 1, and the both gradually narrow the facing distance to reach the catch roll described later.

The turn roll 15 can be arranged on the inlet side of the pay-out rolls 4 and 5 as shown by the phantom line in FIG. Preferably, the low-speed feed belt 14 is moved so as to be inclined upward from the carry-in ends on the exit side of the pay-out rolls 4 and 5 to form a skewed region 16.

The low speed feed belt 14 is provided at the end of the feeding rolls 4 and 5 on the exit side, that is, at the end of the skew region 16.
The sheet catch rolls 18 and 19 for sandwiching the sheet are arranged, and the skewed region 16 is formed between the catch rolls 18 and 19 and the turn roll 15.

The catch rolls 18 and 19 first pinch the leading end (head) of the sheet transferred from the high speed feed belts 1 and 2 to the low speed feed belt 14 with the low speed feed belt 14,
Then, the overlapping part is sandwiched and it is extended to the other end.
That is, the sheet 10 is transferred from the payout rolls 4 and 5 onto the low-speed feed belt 14, and the head of the succeeding sheet 10 ′ is held by the catch rolls 18 and 19 while the head of the preceding sheet 10 is held. It is preferable that they fall onto the upper surface of the bottom part of the and are overlapped. Therefore, the dimension from the sheet carrying-in end of the low-speed feed belt 14 to the catch rolls 18 and 19 is set to be equal to or less than the dimension in the feeding direction of the sheet 10.

The transverse area 8 of the high-speed feed belt 1 and the oblique area 16 of the low-speed feed belt 14 gradually reach the catch rolls 18 and 19 with a narrower interval as described above.

The sheet 10 is sequentially loaded into the carry-in ends of the high-speed feed belts 1 and 2 by the above-mentioned structure, and is sandwiched between the high-speed feed belts 1 and 2 in a state of being aligned at equal intervals in the feeding direction and transferred to the carry-out end. Then, as shown in FIGS. 2 to 4, it is transferred from the delivery rolls 4, 5 arranged at the carry-out end to the carry-in end of the low-speed belt 14. The sheet 10 surely drops to the carry-in end by the drop H formed at the carry-out end of the high-speed feed belts 1 and 2 and the carry-in end of the low-speed feed belt 14, and follows the trailing edge of the preceding sheet 10 due to the speed difference between the two belts. The heads of the seats 10 'to be reliably overlapped (see FIG. 4).

By repeating the above operation, a state in which the sheets 10 are arranged in a scaly shape on the upper surface of the low speed feed belt 14 as shown in FIG. 5 is easily and surely formed.

The low speed feed belt 14 is made to traverse forward from the exits of the catch rolls 18 and 19, and the upper catch roll 18 is hung on the inner surface of another low speed feed belt 20 which runs in synchronization with the low speed feed belt 14. The upper low-speed feed belt 20 and the lower low-speed feed belt 14 are sandwiched between the catch rolls 18 and 19, and the catch rolls 18 and 19 are allowed to traverse at a constant speed in a superposed state. Preferably, the turn roll 9 at the end of the transverse area 8 of the high speed feed belt 1 is caught by the catch roll 1.
8, the turn roll 9 is fastened with a low-speed feed belt 20 and then passed through the catch rolls 18 and 19 to make the traverse region 8 continuous to the catch rolls 18 and 19.

The feeding rolls 22 and 23 are arranged at the ends of the superposition traverse regions 21 of the low-speed feed belts 14 and 20, and the stacking table 24 is arranged on the outlet side of the feeding rolls 22 and 23. Therefore, the overlapped sheets 10 and 10 ′ transferred to the carry-in end of the low-speed feed belt 14 are sandwiched between the catch rolls 18 and 19 between the upper low-speed feed belt 20 and the lower low-speed feed belt 14, and the stacking table 24 is stacked.
Is supplied to the stacking table 24, a required number of sheets are stacked on the stacking table 24, and the unit blocks stacked on the stacking table are sandwiched by the grippers 25 and 26 in a timing manner, and the unit block is provided to the next step. An apparatus for forming and carrying out the above unit block is shown in, for example, USP4869487 provided by the applicant.

The upper low-speed feed belt 20 and the lower low-speed feed belt 14 are moved at a constant speed, and the upper low-speed feed belt 20 passes between the feeding rolls 22 and 23 and continuously traverses along the stacking table 24, and the stacking table 24. The catch roll 1 is mounted on the turn roll 27 arranged on the carry-out end side of
8, that is, the end of the skewed region 16 is returned to be used for feeding the transfer sheet. On the other hand, the low-speed feed belt 14 has its inner surface hung on the lower pay-out roll 23 and the turn roll 1
5, that is, the sheet is transferred to the beginning of the skewed area 16 and used for sheet transfer.

As an example, push-down means 28 for pushing down the bottom of the sheet 10 transferred to the carry-in end of the low-speed feed belt 14 is provided at the carry-out end of the high-speed feed belts 1 and 2. The sheet pressing means 28 is rotatably provided on the exit side of the feeding rolls 4 and 5, and the transfer sheet 10 is rotated each time the sheet is rotated.
Is arranged so that the bottom of the bottom is pushed down to the carry-in end of the low speed feed belt 14.

The pushing means 28 pushes the trailing edge of the preceding sheet 10 at a low speed by the high speed transfer belt 14 under the high speed transfer of the sheet.
Securely presses down to the upper surface of the preceding sheet, prevents interference with the succeeding sheet 10 ', effectively prevents the trouble that the succeeding sheet overlaps with the lower surface of the preceding sheet, and properly overlaps the succeeding sheet with the upper surface of the preceding sheet. Let It should be noted that the sheet 10 includes a flat paper and a signature folded in two or more.

[0029]

As described above, according to the present invention, the high-speed feed belt is transferred to the low-speed feed belt, the overlap dimension between the sheets is set by the speed difference between the two belts, and the trailing portion of the preceding sheet is set by the drop of both belts. Then, the head of the succeeding sheet can be dropped to surely form the overlapped state of both sheets. Therefore, by repeating the above operation, the work of arranging the sheets in a scaly pattern is properly performed.

Further, since the sheets can form the overlapped state in the process of transferring from the high speed feed belt to the low speed feed belt while running the high speed feed belt and the low speed feed belt in the same direction, the speed of both belts can be increased. Even if the speed is increased, it is possible to effectively prevent the non-uniformity of the overlapping portions of the sheets and speed up the work for arranging the sheets in a scaly shape.

[Brief description of drawings]

FIG. 1 is a side view of an apparatus for arranging sheets in a scaly form showing an embodiment of the present invention.

FIG. 2 is a side view of the main parts showing the operating state of the same apparatus.

FIG. 3 is a side view of the main parts showing the operating state of the same apparatus.

FIG. 4 is a side view of the main parts showing the operating state of the same apparatus.

FIG. 5 is a side view schematically showing a state in which sheets are arranged in a scale.

[Explanation of symbols]

 1, 2 high-speed feed belt 7 overlap traverse area 14, 20 low-speed feed belt 16 skew area 18, 19 sheet catch roll 28 sheet pressing means

Claims (3)

[Claims] 1. A high-speed feed belt transfers a sheet to be transferred to a low-speed feed belt, and a head is set between the sheet carry-out end of the high-speed feed belt and the sheet carry-in end of the low-speed feed belt so that the sheet carry-in end is at a low position. The trailing edge of the transferred sheet is dropped onto the low-speed feed belt due to the drop, and the head of the subsequent sheet supplied from the high-speed feed belt due to the difference between the sheet feed speeds of the high-speed feed belt and the low-speed feed belt and the drop. A method in which the preceding sheets dropped on the low-speed feed belt are dropped onto the bottom of the preceding sheets to form an overlapped state, and the sheets are arranged in a scaly shape by repeating the above operation. 2. A high-speed feed belt for sandwiching and transporting a large number of sheets aligned in the feed direction, and a low-speed feed belt for transferring sheets from the high-speed feed belt is provided at a sheet unloading end of the high-speed feed belt. Then, the sheet carry-in end of the low-speed feed belt in the transfer section is arranged lower than the sheet carry-out end of the high-speed feed belt to form a drop between the carry-out end and the carry-in end, and further at the carry-in end of the low-speed feed belt. A device for arranging sheets in a scaly shape, which is characterized by arranging catch rolls that sandwich the transferred sheets with the same belt and feed the sheets forward. 3. An apparatus for arranging sheets in a scale-like manner according to claim 2, further comprising sheet pressing means for pushing down the trailing edge of the sheet transferred to the carry-in end of the low-speed feed belt onto the low-speed feed belt. ..