JPS61127567A - Bookbinder - Google Patents

Abstract

PURPOSE:To make it possible to set up the folded state of a sheet hardly re stored by employing such constitution in which a paper folding unit for folding paper sheets one by one, comprises multiple front end fences projecting/ retreating in a conveying route in response to the size of a paper sheet, and a pair of folding rollers for gripping the warped portion of paper sheets for folding. CONSTITUTION:This bookbinder comprises a control section A, a feeder B, a folder C, a collator D, a sewing section E, a binding section F and a stacker G. The sheets supplied from the feeder B are sent one by one to the folder C where each sheet, abutted against one of the multiple fences 15 through 18 selectively activated depending on the size of the sheet to cause it to warp, is gripped and folded by paired folding rollers 6 and 7. The folded sheet is then piled up by a conveying roller 14 at the stacker tray 52, 54 and, after being located in position by the action of rotating rollers 40, 45, sewn into a bookform by a stitcher 59 at the folder E.

Description

Detailed Description of the Invention (Technical Field) The present invention relates to a bookbinding device that can be used alone or in conjunction with a copying machine, a printing machine, etc., and particularly relates to a bookbinding device that has center-folding and saddle-stitching functions in addition to edge-stitching. This relates to improvements to the device.

(Prior art) Regarding the edge stitching, center folding, and saddle stitching described above, FIG.
This will be explained based on the explanatory diagrams shown in FIGS. 17 and 18.

Edge binding refers to binding the edges of a bundle of sheets with a stitcher at one or two locations, as shown in FIG.

Half-folding means folding a sheet of paper near the center of its long sides, as shown in FIG.

Saddle stitching means binding the folds of a plurality of sheets of paper folded in the middle using a stitcher, a stapler 9, a wire binding device, etc., as shown in FIG.

Conventional bookbinding apparatuses that perform folding and binding often employ a method of folding sheets all at once.

Therefore, there is a limit to the number of sheets of paper, and when a large number of sheets of paper are folded and bound, the folding is weak and the edges of the sheets often become uneven.

An example of a conventional bookbinding device is shown in FIG.

When a predetermined number of sheets P are inserted into a part of the stitcher, a pair of thin rubber rollers 102 press the sheets against the stitcher pedestal 103 from above.

At this time, the stitcher 104 operates and stitches the sheets together.Next, the stitcher 105 escapes, and the pair of rubber rollers 102 sandwich the bound sheets and hold the sheets between the pair of folding rollers 104. , add creases to the paper.

In this method, since the sheets are folded all at once, the number of sheets to be creased is limited to about 15, and the folding becomes weak. In addition, when stapling, a large number of uncreased sheets of paper are pressed against the stitcher pedestal using a pair of narrow rollers, resulting in uneven edges of the sheets.

(Objective) The present invention has been made in view of the drawbacks of the conventional example, and an object thereof is to provide a bookbinding device that can accurately center-fold a large number of sheets.

(Structure) To this end, the present invention has a paper folding unit configured with a plurality of tip fences that appear and retract in the conveyance path according to the paper size, and a pair of folding rollers that grip and fold the bending part of the paper. It is characterized by the fact that

DESCRIPTION OF THE PREFERRED EMBODIMENTS A bookbinding apparatus according to the present invention will be described below based on illustrated embodiments.

The bookbinding device includes an operation section A, a paper supply section B, and a paper folding section C9.
Paper edge alignment section, paper saddle stitching section E, paper edge stitching section F,
It is roughly divided into a paper stack section G.

There are two main ways to center-fold and saddle-stitch paper (hereinafter, center-folding and saddle-stitching are referred to as saddle-stitch binding). Use as a memo or notebook. Make copies in advance so that the pages will be in the correct order when saddle stitched, fold the copies in the middle, and make a saddle stitch book.

The bookbinding device of the present invention is provided with at least one paper supply section B, in which sheets of paper to be folded and bound are stacked. In this case, the following two methods can be considered.

(i) 20 sheets of paper necessary to produce one copy are loaded in the paper supply unit each time, and each copy is saddle-stitched to produce a total of 10 copies.

(ii) Load the number of sheets necessary to make all the copies into the paper supply section B and place them on the numeric keypad, 20
Input that 100 copies of each saddle-stitched book will be produced.

The above two methods each have advantages and disadvantages.

In the case of method (i), the number of sheets required to make one copy is supplied to paper supply section B each time.
Since the paper is loaded in the paper folding section B, the paper is supplied to the paper folding section, and if it is detected that there is no paper in the paper supply section B, subsequent operation commands for each section can be easily retrieved. In other words, a signal indicating that 20 sheets have been supplied from paper supply section B can be easily obtained. However, when the number of saddle-stitched books becomes very large,
For example, if you want to make 100 copies by saddle-stitching five sheets at a time, the operator cannot leave the machine until all the books have been made.

In the case of method (ii), the number of sheets required to produce one copy and the total number of copies can be set using the numeric keypad, so even if the total number of copies increases, the effort imposed on the operator is reduced.

However, since the number of sheets necessary to produce all copies is loaded in paper supply section B at once, if there is a double feed or a non-feed, the last page of each copy will be If it is difficult to detect the signal indicating that the paper has been supplied, and moreover, if the signal is detected incorrectly, the pages will be saddle-stitched with uneven pages.

In order to solve this problem, it is necessary to insert special paper between each copy so that the signal can be extracted.

In the bookbinding apparatus of the present invention, a special paper from which this signal can be extracted is used as a cover for saddle-stitch binding, and when attaching a cover, method (ii) or (i) is used.
Another difference from conventional bookbinding devices is that method (i) is used separately when a cover is not attached to reduce the problems associated with each method.

Next, using the case where a cover is not attached as an example, we will explain how the paper is folded and stapled, and where the signals that give operation commands for each part are received. (i) In other words, the required number of sheets is loaded onto the paper supply section B each time, and saddle stitching is performed one copy at a time.At this time, a signal indicating that the last paper has been supplied is provided near the paper supply section B. It is detected by a detector 4, such as a photosensor.

The paper supplied from the paper supply section B is sent to the rollers 6 and 6.
When the paper is conveyed, it passes the sponge roller 12.13 that rotates while contacting the upper guide plate 8, and the leading edge of the paper hits one of the leading edge fences 15, 16, 17, and 18. During this time, the sponge Although the rollers 12 and 13 continue to rotate, their conveying force is weak, so they do not buckle the paper. When the leading edge of the paper hits the leading edge fence,
The paper begins to sag near the roller 6 and lower guide plate 9.

At this time, a sensor 10 is located in the middle of the conveyance path, and a roller 7, which has a part of the cylinder cut out so that a part of its outer periphery is in contact with the roller 6, is attached.
It rotates once in time with the signal from. When the rollers 7 and 6 begin to come into contact with each other, the bent portion of the paper is gripped by the rollers 7 and 6, and the paper is folded. During one rotation of the roller 7, the conveying force exerted by the rollers 6 and 7 is temporarily eliminated due to the notched portion of the roller rough.

In other words, when the paper is folded, it becomes free to some extent.

At this time, the tip fences 15 to 18 are retracted from the conveyance path, and the paper is sent to the paper edge alignment section by the conveyance force of the sponge rollers 12 and 13.

It is desirable that the circumferential speed of the sponge rollers 12 and 13 is slightly faster than rollers 6 and 7, and depending on the paper size,
A plurality of fences may be provided, and the tip fence 1
5 to 18 may be movable or may be installed in plural numbers according to each paper size.Furthermore, the sensor 10 that detects the timing of rotating the roller 7 is connected to the roller 6 and the roller. 7° Any method may be used as long as it is installed between the end fences 15 to 18 6
For example, a signal may be generated to give the timing for rotating the roller 3 by detecting that the leading edge of the paper hits the leading edge fence.

The above operations are performed until all the sheets loaded in the sheet supply section B are supplied. When the last sheet of paper supply section B is fed, a detector 4 near paper supply section B
In response to the signal from the center, subsequent operation commands for each section such as the sheet saddle stitching section E are obtained.

As described above, the sheets whose central portions are folded are stacked on the sheet stacking trays 52 and 54 by the conveying rollers 14.

The paper conveyed onto the paper loading trays 52 and 54 is
The upper surface is rubbed by a brush roller 47 and sent toward the wall board 34. The brush roller 47 is made of nylon fiber or the like, and only a portion of the brush has bristles, and the tip of the bristles lightly contacts the paper loading tray 54 . The brush roller 47 is rotating on the upper surface of the paper in an attempt to further convey the paper that has hit the wall plate 34. However, since the conveyance force by the brush roller 47 is weak, the paper does not buckle. Further, if the brush roller 47 is used for alignment, there is no need to retract the brush roller 47 from the paper and there is no risk of buckling the paper, so there is an advantage that the structure of the entire apparatus is simplified.

As described above, the paper sent to the paper stacking tray 52.54 by the brush roller 47 moves toward the wall plate 34 due to the inclination of the tray 52.54. When the trailing edge of the paper touches the rollers 40 or 40' (shown in the sixth figure), the paper is conveyed in the input direction by the rotation of the rollers, and then the edge of the paper in the direction perpendicular to the fold comes into contact with the rollers 45 and is transported in the B direction. A conveying force of (shown in FIG. 6(a)) is also applied.

FIGS. 5 and 6 (al and b) are drawings of the above-mentioned parts, and FIG. 5 shows the tray 52, 54, the stitcher 59 for saddle stitching, and the wedge-shaped needle receiver facing below. 5 is a simplified diagram showing the relationship with the tray 57, and both trays are rotatable downward around the center-folded portion of the paper.

Further, FIG. 6 (al is an external view of the cylindrical path of the tray 54 portion, and FIG. 6 (1)) is a simplified plan view showing the paper alignment function.

As mentioned above, the rollers 40 and 40' enter the notches 54a and 54b of the tray 54 and rotate in the direction of the arrow, and the roller 45 can move in and out of the notch 54d, depending on the paper width. It is positioned and rotates in the direction of the arrow. The wall plate 34 is also moved forward and backward within the notch 546 according to the length of the paper.

In this way, the center-folded paper is rolled at 40°40'.
, 45. The rollers 40 and 40' are provided parallel to the edge of the tray 54. Furthermore, by making the rollers 45 variable between the edge and flat sides as described above, even if the paper size changes, the binding position can always be symmetrical with respect to the center line of the paper. The material of the roller is made of rubber or elastomer such as urethane. When all the sheets are aligned, the wall plate 34 pushes the rear end of the sheets, and the fold line is aligned with the needle guard along the edge of the stay 57. In this way, if the paper is aligned using rollers that touch the edges of the paper, the structure is simpler than the jogger method, and when the paper tray moves like in this device (the tray 54 rotates downward) It can also be easily installed.

In this manner, the trailing end of the paper is pushed by the wall until the fold line matches the edge of the needle guard stay 57.

Next, the paper loading trays 52 and 54 are folded together at the center (52'54') as shown by the dashed line in FIG.
). At this time, since the stacked sheets are folded, the sheets are stacked so that the center fold portion of the sheets matches the edge portion.

In this state, the stitcher 59 performs saddle stitching.

Next, the tray 52 of the paper stack trays 52 and 54 is in the state shown by the solid line in FIG. 1, the wall plate 34 is released, and the paper is discharged to the paper stack tray 5 and 66 as shown in FIG. be done.

FIG. 7 is a diagram showing the state of paper discharge from the side plate tray 65 and the bottom plate tray 66.

As shown in the figure, edge binding paper P of the fallen binding paper
, is in the side plate tray 65, and the saddle stitch paper P is also placed in the side plate tray 65.

are stacked on the bottom plate tray 66. Note that Pte indicates a saddle stitched portion.

As shown in FIG. 1, the side plate tray 65 is configured to change the angle θ along the arched tray guide hole 68 provided in the main body, and therefore the bottom plate tray 65 is provided perpendicularly thereto.
The angle θ can also be changed. Further, the bottom plate 66 is movable in the vertical direction.

In FIG. 1, numeral 1 indicates the entire bookbinding apparatus.

2 is a paper tray, 3 is a paper feed roller, 5 is an entrance guide plate, 11 is a magnet, 19 is a relenoid (1), 20 is a solenoid (2), 21 is a push arm (end), 22 is a push roller (end) ), 23 is a solenoid stay, 24 is a stitcher (end), 25 is a stitch support plate, 26 is a leaf spring (end), 27 is a main motor, 28 is a tensioner,
29 is a tension roller, 30 is a tension spring, 31 is a drive belt, 32 is a wall plate moving cow, 33 is a wall plate block, 35 is a wall plate moving motor stay, 36 is a wall plate home position switch, 37 is a wall Plate runaway prevention switch, 38 is needle receiver (end), 39 is tray home position switch (1), 41 is Boo January 1), 42 is resist roller bracket, 43 is resist roller home position switch, 44 is pulley (2) ), 46 is a registration roller drive belt, 48 is a tray drive gear (2), 49 is a drive gear (1), 50 is a tray drive motor (1), 51 is a motor bracket (1), 53 is a tray home position switch ( 2), 55 is a tray drive motor (2), 5
6 is the motor bracket (2), 58 is the meter holder (middle), 6
0 is stitcher support bracket, 61 is leaf spring (middle)
, 62 is stitcher stay, 63 is push arm (middle)
, 64 is the push roller (middle), 67 is the pin, 68 is the tray guide hole, 69 is the paper ejection hole, 70 is the foot (1), 71
indicates a foot (2), and 72 indicates an operation display section.

Next, edge binding will be explained using an example in which a cover is not attached.

In this case, since the paper leading edge fence is retracted from the conveyance path, the paper supplied from paper supply section B is
The paper passes through rollers 6 and is stacked on paper stack trays 52 and 54. At this time, the brush roller 47.2 is
0.40.40', 45 aligns the edge of the paper at a predetermined position.

Thereafter, the edge stitcher 24 is activated by a signal from the detector 4 in the paper supply section B, the edges are stitched, the paper loading tray 54 is moved, and the paper is discharged to the paper stack tray 5.

Next, the case of attaching a cover using method (ii) will be explained.

In the case of method (ii), the number of sheets necessary to produce all the copies is loaded on the paper supply section B, and the number of sheets necessary to produce some copies and the total number of copies are input using the numeric keys. Between each number of copies, there is a special paper that can take out the signal that this paper is the boundary between each number of copies, that is, a paper that will become a cover is inserted in advance. A detection mark is imprinted with optical dye ink, making it possible to detect signals. Or use paper coated with fluorescent dye on the entire surface for the cover. As described above, each sheet passes through the sheet folding section C1 and the sheet saddle stitching section E, and is discharged to the sheet stack section. In this case, the paper saddle stitching section E and the like operate by detecting the cover. Alternatively, a method may be used that can detect that the paper is a cover by detecting the color of the cover or the thickness of the cover. When detecting the color of the cover, it is also possible to automatically change the filter depending on the color of the cover. Furthermore, the inclination of the paper stack Drailo 5.66 can be changed as described above depending on the size of the paper. Further, the bookbinding apparatus of the present invention is provided with a switch near the stitcher, so that when the stitcher runs out of needles, a message indicating that one stitch is missing is displayed.

Next, the operation display section shown in FIG. 2 will be explained.

In the figure, 73 is a display unit, 74 is a serviceman call,
75 indicates that there is no staple, 76 indicates a paper jam, 77 indicates a discrepancy between the number of fed sheets and the set number of sheets, 78 indicates a number of sheets input instruction, 79 indicates a number of copies input instruction, 80 indicates the number of sheets set,
81 is a count number, 82 is a numeric keypad, 83 is a start key, a prohibition display, 84 is a 1-copy input key, 185 is a paper size key, and 86.87 is a binding position key.

The paper size is selected using the paper size key 85, and the binding position is selected using the binding position keys 86 and 87. Then, when the number of sheets input instruction display 78 lights up, the number of sheets is specified using the numeric keypad 82 and the input key 84 is pressed to input it. Next, when the number of copies input instruction display 79 lights up, specify the number of copies using the numeric keypad 82 and press the input key 84 to input the number of copies.The operation of 0 or more is completed, and the side registration roller 45 of the main body of the bookbinding device and the paper loading tray 5
4.52, when the wall plate 34 is also in the initial state, the prohibition display 83 changes from red to blue and enters the standby state.

When the start key 83 is pressed here, the sheets P on the paper tray 2 are fed one by one and the bookbinding operation is performed. If the set number of sheets differs from the actual number of sheets fed,
The number of sheets mismatch display 77 lights up and the work is stopped.

In this case, the operator should check the cause and restart the machine. When paper jams, the paper sensor 10 detects the timing shift, lights up the jam indicator 76, and stops the operation. The operator removes the jammed paper and transfers the paper to the paper loading tray 54.
, 52. If all paper is removed from the paper tray 2 and restarted, the paper will be fed from the first paper of the next set.

Each of the stitchers 24 and 59 (59 is two pieces) has a sensor (not shown) that detects when the stitchers run out, and when the stitchers run out, the no-needle indicator 75 lights up and the operation is stopped. The operator refills the needle and restarts. When all the work is completed, the main motor 27 stops and enters a standby state.

FIG. 3 shows the stitcher drive mechanism, and a clutch housing 95 contains a spring to form a one-way clutch. Although the shaft 96 is rotating in the direction of arrow A, the clutch lever 99 is
Clutch housing 9 because it is stuck on the step of 5.
5 is stopped. Cam 97 is clutch housing 95
It is stopped because it is connected to.

Now turn on the solenoid 101 and move the clutch lever 99.
When pulled, the clutch housing 95 and P are disengaged, and the clutch housing 95. The cam 97 rotates in the A direction. Cam 97 rotates around shaft 96. cam 9
The outer periphery of 7 is in contact with the transmission roller 90, but moves away from the center of the shaft 96 as the cam 97 rotates. The transmission roller 90 is fixedly connected to the transmission arm 88.
rotates about axis 98.

Here, when the cam 97 rotates, the transmission arm 88 rotates in the B direction. The driven arm 92 is a transmission spring -94
Since it is connected to the transmission arm 88 through the shaft, it also rotates in the B direction. Since the driven arm 92 is fastened to the push arm 21 or 63, it rotates in the C direction. Therefore, the push roller 22 or 64 presses the stitcher 24 or 59, and the stitching operation is performed. When the cam 97 rotates once, it returns to the initial state and the clutch housing 9
5 and the clutch lever 99 are engaged, and the rotation of the cam stops.

The stroke of the stitcher changes when the number of sheets of paper to be stitched changes, but the transmission spring absorbs this difference, so there is no need to adjust the number of sheets of paper.

The main routine showing the above control operations is shown in Figures 8 to 13.
The jam processing routine is shown in the flowchart of FIG. 14, and the control of the wall plate 34 is shown in the flowchart of FIG.

In the figure, the main motor is the main motor 27, the linear head is the wall plate moving motor 32, the DC motor I is the tray drive motor (1) 50, the DC monitor ■ is the tray drive motor (2) 55, and the DC motor ■ is the side registration roller movement motor (not shown), solenoid I is the B5 solenoid (In2), and solenoid ■ is the A4 solenoid (1
) 19, solenoid ■ is the solenoid for B4 (2120
Solenoid ■ is the solenoid for A3 (2120), solenoid ■ is the solenoid 101 for saddle stitching, solenoid ■ is the solenoid 101 for edge stitching, solenoid ■ is the solenoid for folding roller rotation (not shown), photo sensor ■ is the paper sensor 10, photosensor ■ is the paper end sensor 4, photosensor ■ is the cover detection sensor (not shown), micro SWI is the wall plate runaway prevention switch 37, micro 5w1I is the wall plate home position switch 36, the micro 5w1lI uses the resist roller home position switch 43, the micro 5w1V uses the tray home position switch (1) 39, the micro S
wV indicates the tray home body switch (2) 53, respectively.

(Effects) The present invention is as described above, and according to the bookbinding device according to the present invention, the sheets fed out one by one from the paper supply section are stopped by the retractable end fence provided in the conveyance path. ,
Since we created a slack in the center and held it in a pair of folding rollers to fold it, we were able to fold it one pair at a time.
It is possible to create strong creases on a large number of bound sheets.

[Brief explanation of the drawing]

FIG. 1 is an internal mechanism diagram showing the entire bookbinding apparatus according to an embodiment of the present invention, FIG. 2 is a plan view of the operation display section, FIG. 3 is a diagram showing the stitcher drive mechanism, and FIG. a), (b
), (C1 is a simplified diagram showing each operating state of a conventional bookbinding device, FIG. 5 is a simplified diagram of the saddle stitching section, FIG. 6 is a paper alignment mechanism section, and (a) is an external view. , (b) is a simplified plan view, FIG. 7 is a side view showing the paper ejection tray, FIGS. 8, 9, 10, 11, 12, 13.
The figure is a flowchart showing the main routine of control operation.
FIG. 14 is a flowchart showing a subroutine for handling a jam, FIG. 15 is a flowchart for controlling a wall board, and FIGS. 16, 17, and 18 are explanatory diagrams of paper folding and binding. A...Operation unit, B...Paper supply unit, C...Paper folding unit, D...Paper edge alignment unit, E...Paper saddle stitching unit, F...Paper edge binding unit , G...Paper stack section. Figure 3 Figure 4 [σ and b Figure 5 Figure 6 tσ Figure 7 Figure 8 Figure 75 Figure 5 Figure 77 Figure 18

Claims (1)

[Claims] Consists of an operation section, a paper supply section, a paper folding section, a paper edge alignment section, a paper saddle stitching section, a paper edge stitching section, and a paper stacking section.
In response to an input from the operation unit, the paper is fed one by one from the paper supply unit to the paper folding unit, and this paper folding unit is connected to multiple end fences that appear and retract in the conveyance path according to the paper size, and a bending part of the paper. A bookbinding device comprising a pair of folding rollers for gripping and folding.