JP2000052670A - Sheet aligning apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet aligning apparatus for preventing occurrence of a fault bookbinding due to backbone irregular alignment of a book bundle. SOLUTION: A fixed side anti-slip plate 26 is provided at a lower part of a fixed plate 22a of a clamper on a level plate (flat plate) 21, and a movable side anti-slip plate 21 is disposed at a lower part of a movable plate 22b of the clamper. The movable side anti-slip plate is disposed at one end freely slidable on the plate 21 and fixed at the other end to a movable side width regulating plate 32b of a milling treating unit. The plate 32b is moved according to a thickness of a book bundle to be bookbound, and an interval between the plate 32a and the plate 32b is regulated. In this case, the movable side plate is slid on the plate 21 to regulate an interval to the plate 26, thereby aligning backbones of the bundle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet aligning apparatus for aligning the back of a booklet bundle formed of printed sheets.

[0002]

2. Description of the Related Art There is known a bookbinding machine that forms a booklet bundle of one book from paper on which characters, graphics, and the like are printed by a printing machine, glues the booklet bundle and a cover together and performs binding processing. FIG. 4 is a schematic exploded perspective view showing an example of such a bookbinding machine.
The bookbinding machine 1 shown in FIG. 4 includes a paper stacking unit 10, a bookbinding processing start unit 20, a milling processing unit 30, a gluing processing unit 40, and a cover processing unit 50. The general operation of each unit of the bookbinding machine shown in FIG. 4 will be described.

[0003] One booklet bundle T is formed from each sheet P printed by a printing machine (not shown) and discharged from the printing machine.
The paper is conveyed to the paper stacking unit 10 of the bookbinding machine 1 such that the back surface is in a direction orthogonal to the horizontal direction. Next, the booklet bundle T stacked on the paper stacking unit 10 is turned 90 degrees by using a reversing mechanism as described later to reverse the direction of the back surface so as to be parallel to the horizontal direction. Insert into 20 clampers.

[0004] The back side of the booklet bundle T inserted in the clamper is placed on a level plate (flat plate) 21, and the amount of movement in the width direction between the clampers is adjusted according to the thickness of the booklet bundle T. After such adjustment, the booklet bundle T is held between both sides by the clamper and sent to the milling processing unit 30 in the next step.

The milling unit 30 includes a milling machine 3
1. A width adjusting plate is arranged, and the back surface of the booklet bundle T is flush when the booklet bundle T passes over the milling machine, and the pre-processing is performed so that the glue is evenly applied to the entire back surface. Is made. Next, the booklet bundle T whose back surfaces are flush with each other is sent to the glue processing unit 40.

[0006] In the glue processing section 40, glue is stored in a glue tank 41 and a glue roller 42 is arranged to perform glue processing on the back surface of the booklet bundle T. When the gluing process is completed, the booklet bundle T is sent to the cover processing unit 50. In the cover attaching section 50, the printed cover S is conveyed from the cover accumulating section onto the bottom plate 51 and the nip plates (clamping plates) 52 and 53 by an appropriate conveying means such as a conveyor. The back surface of the booklet bundle T, which has been glued and transported, is overlaid on the cover, and the booklet bundle T and the cover are attached to perform the cover attaching process.

FIG. 5 is a schematic side view showing an arrangement relationship between a reversing mechanism provided in the paper stacking section 10 and a clamper provided in the bookbinding processing start section 20. In FIG. 5, a reversing mechanism 11 includes a rotating arm 12, a driving shaft 13, and a guide plate 1.
4, a holding plate 15, a rod 16, and a motor 17. Although not shown, the rotational force of the motor 17 is converted into linear motion using a pinion and a rack, and
6 is driven. Next, the operation of the reversing mechanism 11 shown in FIG. 5 will be described.

[0008] The booklet bundle T is conveyed to the paper stacking section 10 and is stacked so that the back surface Ta is in a direction orthogonal to the horizontal direction. In this state, the motor 17 of the reversing mechanism 11 is
Is operated to move the rod 16 so that the booklet bundle T
4, the rotating arm 12 connected to the driving shaft 13 is rotated in the direction of arrow Q from the position indicated by the broken line in FIG. The rotating arm 12 is stopped at the position indicated by the solid line in the drawing, that is, at the position where the booklet bundle T is set up vertically and the back surface Ta is parallel to the horizontal direction.

The clamper 22 is moved to a position facing the booklet bundle T. Next, the motor 16 of the reversing mechanism 11 is operated to move the rod 16 to retract the holding plate 15 from the booklet bundle T. The booklet bundle T falls in the direction of arrow R, is inserted into the clamper 22, and is placed on the level plate 21.

The clamper 22 includes a fixed plate 22a, a movable plate 2
2b, a driving device 23, and a connecting rod 24. When the booklet bundle T is inserted into the clamper 22 and placed on the level plate 21, the driving device 23 operates to move the connecting rod 24 to retract the movable plate 22b, so that both sides of the booklet bundle T are fixed to the fixed plate 22a. It is sandwiched and held by the movable plate 22b. Clamper 2
2, the booklet bundle T is sandwiched, and a milling processing unit 3 of the next process is held.
Transfer to 0.

Incidentally, each sheet of the booklet bundle T rotates and moves during printing by a plate making roller in a printing press, so that it is curled. Such a curl is restored by the elastic restoring force of the sheet before the sheet is conveyed to the sheet stacking unit 10, but if a strong curl is given, the booklet bundle T is transferred to the sheet stacking unit 10. When the sheets are stacked, the sheets may not be stacked horizontally. In particular, the paper stacked on the top may not be loaded by other papers, and may be stacked in a curled state.

For this reason, when the booklet bundle T is inserted into the clamper 22, the ends of the paper are fixed to the fixed plate 22a and the level plate 21.
It will protrude from between. FIG. 6 is a schematic side view of the bookbinding process start unit 20 showing an example of the state of the edge of the sheet in the clamper 22. FIG.
As shown in (2), since the curl is applied to the sheet Pa (the sheet stacked on the top) outside the booklet bundle T, its end slides on the surface of the level plate 21 and the fixed plate 22a is closed. It is inserted into the clamper 22 so as to protrude from the position of the tip.

FIG. 7 is a schematic side view showing the state of the booklet bundle T after the movable plate 22b is pulled in from the state of FIG.
The end of the paper Pa is disposed on the level plate 21 in a state protruding outward from the lower end of the fixed plate 22a. For this reason, the booklet bundle is transferred to the next process in a state where the back surfaces are not aligned.

As described above, when the booklet bundle is transferred to the next process in a state where the back surface is not aligned, and is subjected to a milling process or a gluing process, there is a problem that a defective bookbinding having a defect in bookbinding is generated. is there. In order to prevent the occurrence of such defective bookbinding, it is conceivable to arrange the distal ends of the fixed plate 22a and the movable plate 22b of the clamper 22 close to the surface of the level plate 21.

That is, the leading ends of the fixed plate 22a and the movable plate 22b are arranged close to the back surface of the booklet bundle T, and both sides of the booklet bundle are sandwiched, so that the end of the sheet on the level plate 21 is This prevents slippage and prevents irregularities on the back surface of the booklet bundle T.

[0016]

However, in the milling processing section in the next step, the back surface of the booklet bundle is cut by a milling machine, and in the gluing processing section, the booklet bundle is cut by a gluing roller. A gluing process is performed on the back surface. For this reason, in order to prevent damage to these members due to contact between the milling machine or the gluing roller and the clamper, the positions of the distal ends of the fixed plate 22a and the movable plate 22b of the clamper 22 are separated from the back surface of the bundle of booklets. , And cannot be brought too close to the surface of the level plate 21. Therefore, there has been a problem that it is not possible to prevent the occurrence of defective bookbinding due to the irregularity of the back surface of the booklet bundle.

The present invention has been made in view of the above problems, and has as its object to provide a sheet aligning apparatus which prevents the occurrence of defective bookbinding due to an irregular rear surface of a booklet bundle.

[0018]

SUMMARY OF THE INVENTION The object of the present invention is to provide a paper aligning apparatus according to the first aspect of the present invention, wherein the sheet aligning device holds a booklet bundle formed of printed sheets by holding the same. This is achieved by a configuration including a flat plate on which the back surface of the booklet bundle is placed, and anti-slip plates provided in two rows at intervals on the flat plate.

According to a second aspect of the present invention, in the paper aligning apparatus according to the first aspect, moving means for moving one of the anti-slip plates provided in the two rows on a flat plate is provided to reduce the thickness of the booklet bundle. The distance between the slip prevention plates is adjusted accordingly.

According to the first aspect of the present invention, since the anti-slip plate is provided on the flat plate, the back surface of the booklet bundle can be aligned on the flat plate even when the paper is curled. In addition, it is possible to prevent the occurrence of defective bookbinding due to the irregular back surface of the booklet bundle.

According to the second aspect of the present invention, there is provided a moving means for moving one of the slip preventing plates on a flat plate, and the interval between the slip preventing plates is adjusted according to the thickness of the booklet bundle. Irrespective of the thickness of the bundle, it is possible to prevent the occurrence of defective bookbinding due to irregular back surface.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a paper aligning apparatus according to the present invention will be described below with reference to the drawings. The same components as those in the conventional example shown in FIGS. 5 to 7 are denoted by the same reference numerals, and detailed description is omitted. FIG. 2 is a side view showing the sheet aligning device provided in the bookbinding process start section, and FIG. 3 is a side view of the sheet aligning device showing a state in which the booklet bundle T is held by the clamper. In FIG. 2, two rows of anti-slip plates 25a, 25 are provided on a level (flat) plate 21 at intervals.
b is provided.

The height of the anti-slip plates 25a and 25b is set so that the height of the
The size is selected to be substantially equal to the length of the gap between a and the tip of the movable plate 22b. The side surfaces of the anti-slip plates 25a and 25b are arranged so as to be on an extension of the booklet bundle holding surface of the fixed plate 22a and the movable plate 22b.

Since the anti-slip plates 25a and 25b are provided in this manner, when the booklet bundle T is inserted into the clamper 22 and the back surface is placed on the level plate 21, the level plate 21
Of the sheet on the surface of the sheet can be suppressed. For example, as shown in FIG. 2, the paper Pa stacked on the uppermost side is provided with a curl so that even if the end of the paper Pa slips on the surface of the level plate 21, the slip is prevented. The plate 25a prevents the fixed plate 22a from moving outward from the tip.

When the clamper 22 is operated, the movable plate 22b is retracted from the state shown in FIG. 2 as shown in FIG. In this state, the surface of the paper Pa is
a is held by the clamper 22 so as to be aligned with the holding surface of a and the side surface of the anti-slip plate 25 a on an extension of the holding surface.

That is, the end of the paper Pa is
Even if it is curved by slipping on the upper side, the curved portion is pulled back when being clamped by the clamper 22, and the paper Pa stands upright on the level plate 21. Therefore, the booklet bundle T
Are aligned on a level plate 21 and clamped by a clamper 22.

As described above, when the paper aligning apparatus of the present invention comprising the clamper, the level plate, and the anti-slip plate is used, the back surface of the booklet bundle T is aligned even if the paper is curled. In this state, the sheet is nipped by the clamper 22 and transferred to the next step, so that the milling process and the gluing process can be performed smoothly, and the occurrence of defective bookbinding can be prevented.

The anti-slip plates 25a and 25a shown in FIGS.
5b is fixed on the level plate 21. For this reason,
If the thickness of the booklet bundle is greater than the distance between the anti-slip plates 25a, 25b, there is a problem that it is not possible to cope with the rear alignment of the booklet bundle. FIG. 1 is a schematic perspective view showing an example in which the paper alignment device shown in FIGS. 2 and 3 is improved. Next, FIG.
Will be described.

On the level plate 21, a fixed anti-slip plate 26 is provided at a position below the fixed plate 22a of the clamper 22,
Further, a movable-side slip prevention plate 27 is disposed at a position below the movable plate 22b of the clamper 22. Movable side anti-slip plate 27
Are arranged such that they can slide freely on the level plate 21.

The milling unit 30 includes a milling machine 3
1 is provided with a motor 31a, a fixed-side width adjusting plate 32a, and a movable-side width adjusting plate 32b. The movable width adjustment plate 32b moves according to the thickness of the booklet bundle T to be bound, and adjusts the distance between the fixed width adjustment plate 32a and the movable width adjustment plate 32b.

A motor 33 drives the movable width adjusting plate 32b. A power transmission portion 34 for changing the power transmission direction to a right angle by combining a bevel gear with the output shaft of the motor 33.
a and 34b are provided. The power transmission unit 34
Adjustment rods 35a and 35b are attached to a and 34b. Reference numeral 36 denotes a connection plate fixed to the movable-side width adjustment plate 32b and connected to the adjustment rods 35a and 35b.

One end 27a of the movable-side slip prevention plate 27
Are fixed to the movable-side width adjustment plate 32b. Motor 3
When 3 rotates, the adjustment rods 35a and 35b move via the power transmission units 34a and 34b, and the driving force is transmitted to the movable-side width adjustment plate 32b through the connection plate 36. Motor 3
3, the movable side width adjusting plate 32b is viewed in the direction of the arrow X1.
Direction or X2 direction.

The movable-side slip prevention plate 27 has one end 27.
a is fixed to the movable-side width adjusting plate 32b, and the other end is disposed on the level plate 21 in a free state. For this reason, the movable side width adjustment plate 32b is viewed in the X1 direction or the X2 direction.
When the movable side anti-slip plate 27 moves in the direction, the movable side anti-slip plate 27 also moves in the direction X
Slide in one direction or X2 direction.

As described above, in the paper aligning apparatus shown in FIG. 1, the distance between the fixed-side anti-slip plate 26 and the movable-side anti-slip plate 27 is made closer or farther depending on the thickness of the booklet bundle. Therefore, even if the thickness of the booklet bundle T changes, the fixed-side slip prevention plate 2
The booklet bundle T can be sandwiched between the movable side 6 and the movable side anti-slip plate 27 so that the back surfaces thereof can be aligned. According to the paper aligning apparatus shown in FIG. 1, since the back surface of the booklet bundle T can be aligned and transferred to the next process regardless of the thickness of the booklet bundle T, it is possible to prevent the occurrence of defective bookbinding due to the uneven back surface.

[0035]

As described above, in the invention according to the first aspect, since the anti-slip plate is provided on the flat plate,
Even when the paper is curled, the back surface of the booklet bundle can be aligned on a flat plate, and the occurrence of defective bookbinding due to the irregular back surface of the booklet bundle can be prevented.

According to the second aspect of the present invention, there is provided a moving means for moving one anti-slip plate on a flat plate, and the interval between the anti-slip plates is adjusted according to the thickness of the booklet bundle. In addition, it is possible to prevent the occurrence of defective bookbinding due to irregular back surface irrespective of the thickness of the booklet bundle.

[Brief description of the drawings]

FIG. 1 is a perspective view partially showing a sheet aligning apparatus according to an embodiment of the present invention.

FIG. 2 is a side view illustrating another example of the sheet aligning apparatus.

FIG. 3 is a side view illustrating another example of the sheet aligning apparatus.

FIG. 4 is an exploded perspective view showing a schematic configuration of the bookbinding machine.

FIG. 5 is a schematic side view showing an arrangement relationship between a reversing mechanism and a clamper.

FIG. 6 is a schematic side view of a conventional bookbinding process starting unit.

FIG. 7 is a schematic side view of a conventional bookbinding process starting unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bookbinding machine 10 Paper accumulation part 11 Inversion mechanism 20 Bookbinding processing start part 21 Level plate 22 Clamper 22a Fixed plate 22b Movable plate 25a, 25b Anti-slip plate 26 Fixed-side anti-slip plate 27 Movable-side anti-slip plate 30 Milling processing part 31 Milling machine 32a Fixed-side width adjusting plate 32b Movable-side width adjusting plate 40 Glue processing unit 50 Covering processing unit

Claims (2)

[Claims] 1. A holding means for sandwiching and holding a booklet bundle formed of printed paper, a flat plate on which the back surface of the booklet bundle held by the holding means is placed, and A sheet aligning device comprising: an anti-slip plate provided in a row. 2. The apparatus according to claim 1, further comprising a moving means for moving one of the anti-slip plates provided in the two rows on a flat plate, and adjusting an interval between the anti-slip plates according to the thickness of the booklet bundle. Paper alignment device.