JP2004196524A - Sheet folding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet folding device capable of controlling the back width of the booklet. <P>SOLUTION: A stationary table 11 and a movable table 12 are arranged to face each other, and a table sliding mechanism is provided for sliding the movable table 12 to change the distance from the stationary table 11. The end part of the stationary table 11 is extended vertically downward while the end part of the movable table 12 is recessed like a step. The step 12a of the movable table 12 and the outer wall 11a of the stationary table 11 integrally form a groove. A rolling press roller 13 presses the center part of the sheets P set on the table into the groove to press-mold the sheets into a booklet shape. The back width of the booklet can be controlled by sliding the movable table 12 to change the width of the groove. The back width of the booklet can be set to a desired width or the book width can be standardized. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a paper folding apparatus for folding a saddle stitched sheet into two to form a booklet, and more particularly to a paper folding apparatus for forming the spine of a booklet into a square shape.
[0002]
[Prior art]
As a paper folding apparatus for folding a plurality of sheets of paper into two to form a booklet, a method and an apparatus have been proposed in which a folded portion of the paper is pressed by a roller to form the spine of the booklet into a square shape (Patent Document 1). reference). FIG. 9 shows a paper folding apparatus of this type, in which the center of the paper P set on the paper table 1 is pushed downward by the lifting blade 2 so that the center of the paper P is moved to the stop plate 3 as shown in FIG. 11, 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. 11, the stop plate 3 is retracted, and the paper P protruding downward from between the pair of clamping jaws 4. Of the booklet is crushed by the roller 5 to form the spine of the booklet into a square shape.
[0003]
[Patent Document 1] Japanese Patent Application Laid-Open No. 2001-260564
[Problems to be solved by the invention]
When binding a booklet that has a flat spine between the front and back covers instead of simply folding the paper flat, if you want a uniform spine regardless of the difference in the number of pages or paper thickness, May be set arbitrarily, but clamp the folded paper from the left and right with a clamp, crush the tip of the paper protruding downward from between the clamps with a roller, and shape the spine of the booklet into a square shape In the conventional paper folding apparatus, the spine width is substantially equal to the paper thickness × the number of pages, and the spine width cannot be adjusted. Therefore, there arises a technical problem to be solved in order to provide a paper folding device having a function of controlling the back width of a booklet, and an object of the present invention is to solve the above problem.
[0005]
[Means for Solving the Problems]
The present invention proposes to achieve the above-mentioned object, in which a pair of tables are arranged in parallel, a step portion is provided at one end of one table, and a step portion is provided on the other table at a right angle from the end. A hanging wall portion is provided, a wall portion is overlapped on the step portion to form a groove, and a groove width can be adjusted by interposing an adjusting mechanism for changing an interval between the pair of tables. The present invention is to provide a paper folding apparatus in which a moving roller is provided, and the center of the paper on the table is pressed into the groove by the roller to form a booklet.
[0006]
It is another object of the present invention to provide a paper folding apparatus including a control unit for controlling the groove width in accordance with paper thickness information and paper number information.
It is another object of the present invention to provide a paper folding apparatus provided with a control means for discharging the booklet downward by separating the pair of tables by the space adjusting mechanism after the booklet forming step by the roller.
[0007]
Further, the present invention provides a paper folding device in which the rollers are grooved rollers.
[0008]
BEST MODE FOR CARRYING OUT 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 is placed 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 from the fixed table 11 can be changed by sliding forward and backward (left and right in FIG. 1). The edge of the fixed table 11 facing the movable table 12 hangs downward, and the edge of the movable table 12 facing the fixed table 11 has a step-like shape that is one step lower, as shown in the figure. When the movable table 12 approaches the fixed table 11, a groove is formed by overlapping the step portion 12a of the movable table 12 and the wall portion 11a of the fixed table 11, and the groove width changes by sliding the movable table 12, The step 12a of the movable table 12 can be separated from the wall 11a of the fixed table 11.
[0009]
As shown in FIG. 2, a pressure roller 13 is arranged beside the fixed table 11 and the movable table 12, and the pressure roller 13 traverses the table left and right by a roller moving mechanism (not shown). The lower surface of the pressure roller 13 is located at substantially the same height as the upper surface of the step portion 12a of the movable table 12, and the pressure roller 13 rolls on the upper surface of the step portion 12a. Further, a left-right position adjusting mechanism (not shown) is interposed in the pressure roller 13 and is adjusted so as to be located at the center of the groove according to the groove width.
[0010]
Next, the operation of the paper folding apparatus will be described. As shown in FIG. 1, a set of paper P whose center is bound 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 back width setting information from a control unit such as the copying machine. Alternatively, the movable table 12 is moved rearward by manual setting, and the distance between the movable table 12 and the fixed table 11 is adjusted. The roller 13 is positioned at the center of the groove between the fixed table 11 and the movable table 12 according to the spine width setting information or the manual setting value.
[0011]
Then, as shown in FIGS. 3 and 4, the rolling roller 13 rolls in the groove by the roller moving mechanism, 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. I do. As a result, the center of the paper P is pressed against the bottom and wall surfaces of the groove and press-formed into a square shape, and the page portion is bent at a right angle to the back portion pressed against the bottom surface of the groove to stand upright. Then, as shown in FIG. 5, after the pressure roller 13 passes through the paper P and reaches the rolling end position, the movable table 12 slides forward (right in the figure) as shown in FIG. The paper P separated from the movable table 11 and released from support by the step 12a of the movable table 12 falls downward and is stored in a stock unit (not shown).
[0012]
FIG. 7 shows an example in which the back width is set to be smaller than that in FIG. 1, and it is possible to create a booklet having a desired back width by changing the groove width formed by the fixed table 11 and the movable table 12 as described above. it can. In addition, the booklet is pressed from the inside of the spine, and the spine of the booklet is pressed into the groove of the table and molded, so that the surface of the booklet can be neatly finished without being damaged.
[0013]
In addition, an elevating mechanism is interposed in the pressure roller, and as shown in FIG. 8, the pressure roller 13 waiting above the tables 11 and 12 descends and contacts the groove, and then rolls in the groove. It may be. Although not shown, if a roller formed with a V-groove or a U-groove is used as a pressure roller, the roller does not interfere with staples binding the center of the paper, and a better finish can be obtained. Further, a plurality of types of rolling rollers may be attached to a turntable or the like, and the rolling rollers may be switched according to the groove width.
[0014]
It should be noted that the present invention is not limited to the above embodiments, and various modifications are possible within the technical scope of the present invention, and it is natural that the present invention extends to those modified ones.
[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 mold for the spine of the booklet can be changed by dividing the paper table into two parts, 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 spine width and to unify spine widths of booklets having different numbers of pages, which were 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 operation state of the paper folding mechanism.
FIG. 4 is a front view showing an operation state of the paper folding mechanism.
FIG. 5 is a front view showing an operation state of the paper folding mechanism.
FIG. 6 is a side view showing an operation state of the paper folding mechanism.
FIG. 7 is a side view of the paper folding mechanism.
FIG. 8 is a front view of a paper folding mechanism according to another embodiment.
FIG. 9 shows a conventional example, and is a side view of a paper folding device.
FIG. 10 is a side view showing the operation process of the paper folding apparatus shown in FIG. 9;
FIG. 11 is a side view showing the operation process of the paper folding device shown in FIG. 9;
[Explanation of symbols]
11 Fixed table
11a wall
12 movable table
12a Step section
13 Rolling roller
P paper

Claims (4)

A pair of tables are arranged in parallel, one step is provided at the end of one table with a stepped portion, the other table is provided with a wall hanging down from the end at a right angle, and the groove is formed by overlapping the wall with the step. In addition to forming and adjusting the groove width by interposing an adjusting mechanism for changing the interval between the pair of tables, a roller that rolls in the groove is provided, and the center of the paper on the table is set in the groove by the roller. A paper folding device that press-fits paper into a booklet. 2. The paper folding apparatus according to claim 1, further comprising control means for controlling the groove width in accordance with paper thickness information and paper number information. 3. The paper folding apparatus according to claim 1, further comprising control means for separating the pair of tables by the gap adjusting mechanism and discharging the booklet downward after the booklet forming step by the roller. 4. The paper folding device according to claim 1, wherein the roller is a sheave.

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