JP4060481B2 - Paper folding machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a paper folding machine that can easily remove paper jammed by an internal mechanism.
[0002]
[Prior art]
In some cases, a paper on which characters, graphics, and the like are written is folded into a predetermined size and bound in a file or put in an envelope. 5 and 6 are schematic perspective views showing examples of such paper folding. In the example of FIG. 5, the sheet P <b> 1 is folded inward at the center X position. Further, the example of FIG. 6 is an example in which the paper P2 is folded once inside at the X position, and further folded outward at the Y position to be folded in three.
[0003]
As described above, when various folds such as folding in two at a predetermined position are continuously applied to a large number of sheets, a sheet folding machine is used. This paper folding machine uses a folding roller to fold the paper, and can be formed in a relatively small size and light weight and is portable, so it is widely used in offices and stores.
[0004]
[Problems to be solved by the invention]
In such a paper folding machine, a paper jam may occur in the internal mechanism when folding the paper using a folding roller. When such a paper jam occurs, it is necessary to open the cover and pull out the paper. However, there is a problem that it is difficult to pull out the paper biting into the internal mechanism in a narrow space, and the work load on the worker increases. In addition, there is a problem that when the paper is pulled with an unreasonable force, it is cut off halfway and cannot be completely removed.
[0005]
SUMMARY OF THE INVENTION In view of such problems, an object of the present invention is to provide a paper folding machine that can easily remove paper jammed by an internal mechanism.
[0006]
[Means for Solving the Problems]
The object is to provide a sheet folding machine, a sheet conveying means, a plurality of linear buckles that carry the paper from the conveying means, a stopper that stops the leading edge of the paper carried into each buckle, Setting means for setting the position of the stopper, a plurality of driving means connected to the stoppers and individually moving the stoppers linearly to the setting position, a selection means for selecting a buckle into which the paper is carried, and paper A plurality of folding rollers for providing a folding shape at a predetermined position, a cover that is opened when a paper jam occurs, a switch that detects the opening of the cover, and a control signal that is output to each of the driving means. A control unit, and when the switch signal is detected, a control signal for moving the selected buckle stopper at a high speed in a direction opposite to the paper loading direction is output from the control unit to the driving unit. It can be achieved by a configuration in which.
[0007]
In the present invention, when the paper jam occurs in the buckle portion that is formed in a straight line in a narrow space, the stopper that is provided corresponding to the buckle and stops the leading edge of the paper is provided. The paper is moved at a high speed in the direction opposite to the paper loading direction. For this reason, it is possible to quickly and reliably remove the paper jammed in the buckle portion.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a paper folding machine according to an embodiment of the present invention will be described. FIG. 1 is a side view showing a schematic configuration of the sheet folding machine 1. In FIG. 1, a plurality of sheets 3 are placed on the sheet feed table 2. 4 is a paper feed roller for feeding the paper 3, 5 is a guide plate for guiding the paper 3, and 6 a to 6 e are folding rollers.
[0009]
Reference numeral 7 denotes a first buckle which forms a narrow space in a straight line shape, and 8 is a position of the leading edge of the paper, through which paper is carried in through the paper feed roller 4, guide plate 5, folding rollers 6a and 6d. A first buckle stopper for stopping the carry-in, 9 is a driving motor for driving the first buckle stopper 8, and 10 is wound around a pulley 9 a fixed to the output shaft of the driving motor 8. A chain connected to the buckle stopper 8. A driving force is transmitted through the chain 10 in accordance with the forward rotation or reverse rotation of the drive motor 8, and the first buckle stopper 8 moves linearly in the arrow S direction or the L direction.
[0010]
Reference numeral 12 denotes a second buckle that is used when a folding shape is further applied to a sheet that has been folded using the first buckle 7 and forms a narrow space in a straight line. Reference numeral 13 denotes a second buckle stopper that stops the progress of the paper at a position where the paper is folded (for example, a position X in FIG. 5), 14 denotes a driving motor that drives the second buckle stopper 13, and 15 denotes driving. The chain is wound around a pulley 14 a fixed to the output shaft of the motor 14 and connected to the second buckle stopper 13. Also in this drive system, the drive force is transmitted through the chain 15 in accordance with the forward or reverse rotation of the drive motor 14, and the second buckle stopper 13 is linear in the arrow S direction or L direction. Move to.
[0011]
16 is a driving motor for the folding roller, 16a is a first pulley fixed to the output shaft of the driving motor 16, and 16b is connected to the rotating shaft of the folding roller 6c. A second pulley 17 is a chain wound between the first pulley 16a and the second pulley 16b.
[0012]
Although not shown, the rotary shafts of the folding rollers 6a and 6b and the second pulley 16b are connected by power transmission means such as a chain. Therefore, when the drive motor 16 is driven and rotated in the direction of the arrow V, power is transmitted through the chain 17 and the second pulley 16b, and the folding rollers 6a, 6b and 6c are interlocked. And rotate in the direction of arrow W in the same direction. Further, the folding rollers 6d and 6e, whose rotation shafts are fixed to the lever 19, rotate in the opposite Z direction as the folding rollers 6a, 6b and 6c rotate.
[0013]
Reference numeral 18 denotes a switching guide that switches the paper traveling direction to the direction of the first buckle 7 or the second buckle 12. A lever 19 rotates around a fulcrum 21 in conjunction with a cover (not shown). The lever 19 is provided at two positions on both sides when viewed in the width direction of the paper folding machine 1, and an intermediate portion sandwiched between the levers 19 serves as a paper discharge portion having a folded shape. Reference numeral 20 denotes a switch for detecting the rotation of the lever 19, that is, the opening / closing operation of the cover.
[0014]
Next, the operation of the sheet folding machine of FIG. 1 will be described. For example, as shown in FIG. 5, it is assumed that a folding shape that folds in half at the center position X of the paper P is attached. As will be described later, the paper size and the folding shape are set by a dedicated button provided on the operation panel. In conjunction with such setting, the drive motor 9 operates to move the first buckle stopper 8 to a predetermined position. Further, the switching guide 18 is rotated in the clockwise direction from the illustrated position to block the path to the second buckle 12, and the paper traveling direction is set to the direction of the first buckle 7.
[0015]
By rotating the paper feed roller 4 in the direction of the arrow U, the paper is pulled out from the paper feed table 2, and the leading edge of the paper is passed through the guide plate 5 and the folding rollers 6 a and 6 d to the first buckle 7. Carry in. The leading edge of the paper stops at the position of the first buckle stopper 8, but the paper is continuously fed by the paper feed roller 4, so that swelling occurs near the center of the paper.
[0016]
By pulling the bulging portion so as to be sandwiched between the folding rollers 6b and 6d, a folded shape is imparted to the central position X of the sheet. The sheet with the folded shape is discharged to the outside from a discharge unit (not shown) as the folding rollers 6b and 6d rotate.
[0017]
Next, an example in which a sheet is folded in a trifold as shown in FIG. 6 will be described. In this case, when the paper size and the folding shape are set, the drive motors 9 and 14 are driven to move the first buckle stopper 8 and the second buckle stopper 13 to predetermined positions. The switching guide 18 is first rotated in the clockwise direction from the position shown in the figure to block the path to the second buckle 12 and set the paper traveling direction to the direction of the first buckle 7.
[0018]
In the same manner as the operation when the folded shape of FIG. 5 is given, the leading edge of the paper is carried into the first buckle 7 and the leading edge is stopped at the position of the first buckle stopper 8. Next, the switching guide 18 is rotated counterclockwise to return to the position shown in the figure, and the paper traveling direction is set to the direction of the second buckle 12. The sheet with the folded shape provided by the folding rollers 6b and 6d is fed while further folded by the folding rollers 6b and 6e, and the leading end (X side in FIG. 6) is the second buckle 12. It is carried in.
[0019]
The paper with the folded shape at the position X is stopped at the second buckle stopper 13 set at a predetermined position of the second buckle 12. At this time, as shown in FIG. 6, the Pa side of the sheet on which the folding form Y is applied is longer than the Pb side, so that only the long part protrudes from the second buckle 12.
[0020]
By pulling the bulging portion so as to be sandwiched between folding rollers 6c and 6e, a folded shape is imparted to the sheet at the Y position. With the rotation of the folding rollers 6c and 6e, the leading edge of Pb of the paper P is pulled out so as to overlap with the Y position of Pa. That is, the folding rollers 6c and 6e give a folding shape to the Y position of the paper by the rotation thereof, and discharge the paper with the folding shapes X and Y to the outside from a discharge unit (not shown). It acts to do.
[0021]
FIG. 2 is a block diagram showing a control device of the sheet folding machine according to the present invention. Next, this block diagram will be described. This control device includes an input unit A composed of various buttons, a control unit B using a central processing unit (CPU), a display unit C using a display lamp and an electron tube, a cover open detection switch D, a start, A stop button E, a storage unit F, a first stopper driving motor G, and a second stopper driving motor H are included. The cover open detection switch D corresponds to the switch 20 in FIG. Further, the first stopper driving motor G and the second stopper driving motor H correspond to the driving motors 9 and 14 in FIG. 1, respectively.
[0022]
The input unit A includes a sheet size button a for setting the size of a sheet to which a fold is added, a fold button b for setting a fold shape such as bi-fold and tri-fold, and the number of sheets to which a fold is added. The numerical value set button c to be set, the stopper selection button d for selecting the first buckle stopper 8 and the second buckle stopper 13, the first buckle stopper 8 and the second buckle stopper 13 are shown in the S and L directions shown in FIG. S and L direction buttons e are provided for setting which direction to move.
[0023]
Here, the setting of the stopper selection buttons d, S, and L direction buttons e will be described. For example, in the case of giving a folding shape as shown in FIG. 5, when the test folding (not shown) is set and the paper folding machine is operated, the folding position is output from the center. Suppose. In such a case, the stopper selection button d selects the first buckle stopper 8.
[0024]
Next, when the sheet is folded in half, it is determined which side of Pa and Pb in FIG. 5 is longer, and the S and L direction buttons e are set. Each time the button is pressed in this setting, the first buckle stopper 8 moves in the setting direction in units of 0.2 mm, for example. Thus, since the distance that the first buckle stopper 8 moves at a time is short, a step motor is used as the drive motor 9. A step motor is also used for the drive motor 14 for driving the second buckle stopper 13.
[0025]
As shown in FIG. 6, when the folding is shifted from the Y position when the sheet is folded in three, the stopper selection button d selects the second buckle stopper 13. Further, as in the example of FIG. 5, the S and L direction buttons e are set in the direction in which the shifted position is corrected.
[0026]
When the number of sheets to be folded is set by the numerical value set button c, the numerical value is displayed in an analog manner on the electronic tube of the display unit C. For example, four electron tubes are installed on the operation panel so that 4-digit numerical values can be displayed. The operation panel is provided with a display lamp corresponding to the paper size such as A3, A4, B4, B5, and the lighting position of the display lamp moves each time the paper size button a is pressed. The operation panel is provided with display lamps corresponding to various folds such as two-fold and three-fold, and the lighting position of the display lamp moves each time the fold button b is pressed.
[0027]
The setting contents of the folding button b, the stopper selection buttons d, S, and the L direction button e are registered in a predetermined area of the storage unit F by pressing the memory button. This registered content can be called from the storage unit F by pressing a call button.
[0028]
Next, processing when a paper jam occurs in the paper folding machine of the present invention will be described with reference to the side view of FIG.
[0029]
FIG. 3 is an example in which a paper jam has occurred in the first buckle 7. The occurrence of a paper jam can be determined by the occurrence of an abnormal sound, the output of a sheet with a bent shape, etc., but it is also possible to provide a notification means such as lighting of an indicator lamp or sounding of a buzzer.
[0030]
When it is determined that a paper jam has occurred, the operator opens the cover. In conjunction with the opening of the cover, the lever 19 rotates in the direction of arrow R about the fulcrum 21 to separate the folding rollers 6a to 6c and the folding rollers 6d and 6e. At this time, the switch 20 operates to detect the opening of the cover. When the jammed paper 3a exists in the vicinity of the installation position of the folding rollers 6a to 6e, the paper is removed while the lever 19 is rotated.
[0031]
When the jammed paper 3a has entered the first buckle 7, the operator selects the first buckle 7 with the stopper selection button d in order to take out the jammed paper 3a. The S and L direction buttons e are set so that the buckle stopper 8 is moved in the arrow S direction, that is, in the direction opposite to the paper carry-in direction.
[0032]
As described above, when the cover is opened in order to take out the jammed paper and the operation signal of the switch 20 is input to the control unit 5, the drive motor 9 is operated more than the normal operation for forming a fold. The first buckle stopper 8 is rapidly moved in the arrow S direction by rotating at high speed. At this time, the jammed paper 3a entering the first buckle 7 is transferred to the open surfaces of the folding rollers 6a to 6c so as to be pushed out by the first buckle stopper 8, and the paper is taken out. Can do.
[0033]
After the jammed paper is taken out, the cover is closed and the lever 19 is returned to the original position, and the detection signal of the switch 20 is turned off. For this reason, the control unit B can return to the normal state control and press the call button on the operation panel to give the sheet a folded shape in the state set before the paper jam.
[0034]
When the jammed paper 3a has entered the second buckle 12, the second buckle 12 is selected by the stopper selection button d, and then the second buckle stopper 13 is moved in the direction opposite to the paper carry-in direction. The S and L direction buttons e are set so as to move in the S direction. The drive motor 14 rotates at high speed, and the jammed paper 3a is rapidly transferred to the open surfaces of the folding rollers 6a to 6c.
[0035]
FIG. 4 is a flowchart showing the processing procedure of the sheet folding machine of the present invention. Next, this flow chart will be described.
[0036]
(1) The processing program is started in step S1, and in step S2, various settings are made by the input unit A described with reference to FIG. Next, in step S3, it is determined whether or not the cover is opened. If the determination result is NO (hereinafter abbreviated as N), the process returns to the main process of step S2. If the determination result in step S3 is Y, the process proceeds to step S4 to display an error display indicating that a paper jam has occurred. This error display is performed by appropriate display means provided in the display unit C.
[0037]
(2) Next, it is determined whether or not the stopper selection button has been pressed in the process of step S5. If this determination result is N, the process returns to step S4. If the determination result in step S5 is Y, the first buckle stopper or the second buckle stopper selected by the stopper selection button is selected.
[0038]
(3) Subsequently, in the process of step S7, it is determined whether or not the S and L direction buttons are pressed (in this case, setting of the S direction). If this determination result is N, the process returns to step S7 to enter a standby state. If the determination result in step S7 is Y, a signal is sent to the drive motor that drives the first buckle stopper or the second buckle stopper selected in the process in step S6, and the buckle stopper is set in the paper carry-in direction. Move in the opposite direction at high speed.
[0039]
(4) Next, it is determined whether or not the cover is opened in the process of step S9. If this determination result is Y, it is determined that the removal of the jammed paper has not been completed, and the loop processing from step S7 is repeated. When the determination result in step S9 is N, the process proceeds to the main process in step S2.
[0040]
【The invention's effect】
As described above, in the present invention, when a paper jam occurs in a buckle portion that is formed in a straight line in a narrow space, a stopper that is provided corresponding to the buckle and stops the leading edge of the paper is used. Since the paper is moved at a high speed in the direction opposite to the loading direction, it is possible to quickly and surely remove the paper jammed at the buckle portion.
[Brief description of the drawings]
FIG. 1 is a side view of a sheet folding machine according to an embodiment of the present invention.
FIG. 2 is a block diagram of a control device.
FIG. 3 is a side view of an example of removing a paper jam.
FIG. 4 is a flowchart showing a processing procedure for removing a paper jam.
FIG. 5 is a perspective view illustrating an example of folding a sheet.
FIG. 6 is a perspective view illustrating an example of folding a sheet.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Paper folding machine 3 Paper 4 Paper feed roller 5 Guide plates 6a-6e Folding roller 7 1st buckle 8 1st buckle stopper 9 1st buckle stopper drive motor 12 2nd buckle 13 2nd buckle stopper 14 Second buckle stopper drive motor 16 Folding roller drive motor 18 Switching guide 19 Lever
20 switches

Claims (1)

A sheet conveying unit, a plurality of linear buckles for conveying the sheet from the conveying unit, a stopper for stopping the leading end of the sheet loaded into each buckle, and a setting unit for setting the position of each stopper; A plurality of driving means connected to the stoppers and individually moving the stoppers linearly to the set positions; a selection means for selecting a buckle into which the paper is carried; and a folding shape at a predetermined position of the paper A plurality of folding rollers, a cover that is opened when a paper jam occurs, a switch that detects the opening of the cover, and a controller that outputs a control signal to each of the driving means. When the signal is detected, a control signal for moving the stopper of the selected buckle at a high speed in the direction opposite to the paper carry-in direction is output from the control unit to the driving means. Folding machine.

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