JP4075607B2 - Paper folding device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a paper folding apparatus that folds a saddle-stitched paper in two and binds a booklet, and particularly relates to a paper folding apparatus that forms the back of a booklet into a square shape.
[0002]
[Prior art]
As a paper folding apparatus that folds a plurality of sheets of paper into two to form a booklet, there has been proposed a method and apparatus for forming a booklet back into a square shape by pressing a folded portion of the paper with a roller (Patent Document 1). reference). FIG. 9 shows this type of paper folding apparatus, and the center of the paper P set on the paper table 1 is pushed downward by the liftable blade 2, and the center of the paper P is moved to the stop plate 3 as shown in FIG. 11, the paper P that protrudes downward from between the pair of clamping jaws 4 is retracted after the bent portion of the paper P is clamped from the left and right by a pair of clamping jaws 4 as shown in FIG. The front end of the booklet is crushed by the roller 5 and the back of the booklet is formed into a square shape.
[0003]
[Patent Document 1]
JP 2001-260564 A [0004]
[Problems to be solved by the invention]
When binding a booklet with a flat back between the front and back cover instead of simply flat-folding the paper, if you want a uniform back width regardless of the number of pages or paper thickness, However, the paper folded in half is clamped from the left and right sides and fixed, and the tip of the paper protruding downward from between the clamps is crushed by a roller, and the back of the booklet is formed into a square shape. In the conventional paper folding apparatus, the back width is approximately paper thickness × number of pages, and the back width cannot be adjusted. Therefore, a technical problem to be solved in order to provide a paper folding apparatus having a function capable of controlling the back width of the booklet arises, and the present invention aims to solve the above problem.
[0005]
[Means for Solving the Problems]
This invention is proposed in order to achieve the above-mentioned object, and a pair of tables are arranged in parallel, a step part lowered by one step is provided at the end of one table, and the other table is perpendicular to the end. A hanging wall is provided, and a groove is formed by overlapping the wall on the step part, and an adjustment mechanism for changing the distance between the pair of tables is provided to allow adjustment of the groove width, and the inside of the groove is rolled. The present invention provides a paper folding device that is provided with a moving roller and presses the center of the paper on the table into a groove by the roller to form a booklet.
[0006]
The present invention also provides a paper folding device provided with control means for controlling the groove width in accordance with paper thickness information and paper number information.
Further, the present invention provides a paper folding device provided with a control means for separating the pair of tables by the interval adjusting mechanism and discharging the booklet downward after the booklet forming step by the roller.
[0007]
The roller provides a paper folding device which is a grooved roller.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a mechanism of a paper folding apparatus. A paper table on which paper P to be folded in two is divided into a fixed table 11 and a movable table 12, and the movable table 12 is moved by a table slide mechanism (not shown). The distance to the fixed table 11 can be changed by sliding back and forth (left and right in FIG. 1). The edge of the fixed table 11 that faces the movable table 12 hangs downward, and the edge of the movable table 12 that faces the fixed table 11 has a stepped shape stepped down as shown in the figure. When the movable table 12 approaches the fixed table 11, the step portion 12a of the movable table 12 and the wall portion 11a of the fixed table 11 overlap to form a groove, and the groove width changes by sliding the movable table 12, The step portion 12a of the movable table 12 can be separated from the wall portion 11a of the fixed table 11.
[0009]
As shown in FIG. 2, a rolling roller 13 is arranged beside the fixed table 11 and the movable table 12, and the rolling roller 13 crosses the table left and right by a roller moving mechanism (not shown). The lower surface of the rolling roller 13 is positioned at a height substantially equal to the upper surface of the step portion 12a of the movable table 12, and the rolling roller 13 rolls on the upper surface of the step portion 12a. Further, the rolling roller 13 is provided with a left / right position adjustment mechanism (not shown), and is adjusted so as to be positioned at the center of the groove according to the groove width.
[0010]
Next, the operation of the paper folding device will be described. As shown in FIG. 1, a set of paper P bound at the center by staples or the like is placed on the tables 11 and 12 by a feeding device such as a copying machine or by manual operation, and spine width setting information from a control unit such as a copying machine. Alternatively, the movable table 12 is moved rearward by manual setting, and the distance from the fixed table 11 is adjusted. The rolling roller 13 is positioned at the center of the groove between the fixed table 11 and the movable table 12 in accordance with the back width setting information or the manual setting value.
[0011]
Then, as shown in FIG. 3 and FIG. 4, the roller moving mechanism causes the rolling roller 13 to roll in the groove, and advances to the other end of the table while pushing the center of the paper P on the tables 11 and 12 into the groove. To do. As a result, the center of the paper P is pressed against the bottom and wall surfaces of the groove and pressed into a square shape, and the page portion is bent at a right angle with respect to the back portion pressed against the bottom of the groove and stands upright. Then, as shown in FIG. 5, after the rolling roller 13 passes the paper P and reaches the rolling end position, the movable table 12 slides forward (right in the drawing) as shown in FIG. The paper P which is separated from 11 and released from the support by the step portion 12a of the movable table 12 falls downward and is accommodated in a stock portion (not shown).
[0012]
FIG. 7 shows an example in which the spine width is set narrower than in FIG. 1, and thus a booklet having a desired spine width can be created by changing the groove width formed by the fixed table 11 and the movable table 12. it can. In addition, the booklet is pressed from the inside of the back part of the booklet, and the back part of the booklet is pressed against the groove of the table and molded, so that the surface of the booklet is not scratched and finished beautifully.
[0013]
In addition, as shown in FIG. 8, a rolling roller is provided with an elevating mechanism so that the rolling roller 13 waiting above the tables 11 and 12 descends and contacts the groove, and then rolls in the groove. It may be. Although illustration is omitted, if a roller having a V-groove or U-groove is used as the rolling roller, the roller does not interfere with the staples bound at the center of the paper, and a better finish can be obtained. Alternatively, several types of width of the pressure roller may be attached to the turntable and the pressure roller may be switched according to the groove width.
[0014]
The present invention is not limited to the above-described embodiment, and various modifications are possible within the technical scope of the present invention, and it is natural that the present invention extends to those modifications.
[0015]
【The invention's effect】
As described above, the paper folding apparatus of the present invention has a structure in which the width of the groove serving as the back mold of the booklet can be changed with the paper table divided into two, and the center of the paper is placed in the groove by the roller. Since the booklet is formed by press-fitting, it is possible to arbitrarily set the back width and unify the back width of booklets with different number of pages, which was impossible in the past.
[Brief description of the drawings]
FIG. 1 is a side view of a paper folding mechanism according to an embodiment of the present invention.
FIG. 2 is a front view of a paper folding mechanism.
FIG. 3 is a side view showing an operating state of a paper folding mechanism.
FIG. 4 is a front view showing an operating state of a paper folding mechanism.
FIG. 5 is a front view showing an operating state of a paper folding mechanism.
FIG. 6 is a side view showing the operating state of the paper folding mechanism.
FIG. 7 is a side view of a paper folding mechanism.
FIG. 8 is a front view of a paper folding mechanism showing another embodiment.
FIG. 9 is a side view of a paper folding apparatus according to a conventional example.
10 is a side view showing an operation process of the paper folding device of FIG. 9;
11 is a side view showing an operation process of the paper folding device of FIG. 9;
[Explanation of symbols]
11 Fixed table
11a Wall
12 Movable table
12a Step part
13 Rolling roller
P paper

Claims (4)

A pair of tables are arranged in parallel, one step is provided with a step part that is lowered at one end, the other table is provided with a wall part that hangs at right angles from the end part, and the wall is overlapped with the step part to form a groove. The groove width can be adjusted by using an adjusting mechanism that changes the distance between the pair of tables, and a roller that rolls in the groove is provided. A paper folding device that forms a booklet by press-fitting. The paper folding apparatus according to claim 1, further comprising a control unit that controls the groove width in accordance with paper thickness information and paper number information. The paper folding apparatus according to claim 1, further comprising a control unit that separates the pair of tables by the interval adjusting mechanism and discharges the booklet downward after the booklet forming step by the roller. 4. The paper folding apparatus according to claim 1, wherein the roller is a grooved wheel.

Images