JPS61140459A - Binder - Google Patents

Abstract

PURPOSE:To accurately fold each of a number of papers in two and to enable a saddle stitching to be performed without an irregular arrangement of the paper ends by forming notches in the rear side of a paper carrying tray and allowing aligning rollers to freely go in and out of the notches for every paper size when the papers folded in two one by one are to be arranged on the tray. CONSTITUTION:A paper folded at its center line and fed onto paper carrying trays 52 and 54 is moved toward a wall plate 34 due to the inclinations of the trays. When the rear end of the paper is brought into contact with a roller 40 or 40', the paper is fed in the direction shown by an arrow A in the accompanying drawing by the rotation of the roller and then the paper end perpendicular to the center line (fold line) of the paper is brought into contact with another roller 45, being supplied with a feeding force in the direction shown by an arrow B in the drawing. The rollers 40 and 40' get in notches 54b and 54a in the tray 54, respectively, and are rotated therein. The roller 45 is allowed to freely go in and out of another notch 54d and located in compliance with the length of the paper, being rotated. Also the wall plate 34 goes in and out of notches 54c in compliance with the length of the paper. The papers each folded in two are arranged by the rollers 40, 40', and 45 and, by enabling the roller 45 to move in the direction parallel to an edge, stitching positions can be located symmetrically with respect to the aligned center lines of the papers.

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 1, a wire stitching device, or the like, 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 o2 presses the sheets against the stitcher pedestal 103 from above.

At this time, the stitcher 104 operates and stitches the sheets together.Then, the stitcher 105 escapes, and the pair of rubber rollers 102 sandwich the bound sheets while holding 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.

(Purpose) The present invention has been made in view of the drawbacks of the conventional methods, and is capable of accurately center-folding a large number of sheets of paper and saddle-stitching the sheets without causing uneven edges of the sheets. The purpose is to provide a bookbinding device.

(Structure) For this purpose, the bookbinding device of the present invention centers a predetermined number of sheets one by one, and when aligning the center-folded sheets to a paper loading tray, a notch is provided at the rear of the side of the tray to align the sheets. The feature is that the rollers can appear and disappear depending on the paper size.

The bookbinding apparatus according to the present invention will be explained below based on the illustrated embodiments.

The bookbinding device includes an operation section A, a paper supply section B, and a paper folding section C1.
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.

(1) Load the 20 sheets of paper required to make one copy into the paper supply unit each time, and saddle-stitch each copy for a total of 10 sheets.
Make a part.

(ii) Load the number of sheets necessary to make all the copies into the paper supply section B, and use the numeric keypad to input that one copy of each 20-sheet 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, if the number of copies to be saddle-stitched becomes too large,
For example, when saddle-stitching 5 sheets and producing 100 copies, the operator cannot leave the machine until all the copies have been produced.

In the case of method (II), the number of copies 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 device of the present invention, a special paper from which this signal can be extracted is used as a cover for saddle-stitch binding. , method (i) are used separately, and the problems of each are reduced, which is different from conventional single-piece devices.

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 on 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 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 conveyance 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 touch each other, the bent part of the paper is grabbed by the rollers 7 and 6, and the paper is folded. , the conveying force by rollers 6 and 7 is temporarily eliminated.

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.
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.

Furthermore, if the brush roller 47 is used to align the paper, there is no risk of buckling the paper even if the brush roller 47 is not retracted from the paper, which has the advantage of simplifying the structure of the entire apparatus. .

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 A direction by the rotation of the rollers, and then the paper edge in the direction perpendicular to the fold comes in contact with the roller 45, and the paper is conveyed in the B direction. A conveying force of (shown in FIG. 6 (al)) is also applied.

5, 6(a), and 6(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. is a simplified diagram showing the relationship with the stay 57, and both trays are rotatable downward around the center-folded portion of the paper.

FIG. 6(a) is a simplified outline diagram of the tray 54 portion, and FIG. 6(a) is a simplified plan view showing the sheet 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 into the notch 54d 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. Further, by making the rollers 45 variable in the direction parallel to the edges 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 jigger 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 edge of the paper is pushed by the wall until the fold line matches the edge of the needle guard stay 57.

Next, the paper stacking trays 52, 54 are folded in their central portions (52'), as shown by the dashed line in FIG.

54') At this time, since the stacked sheets are folded, the sheets are stacked with the center fold portion aligned with 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
, are stacked on the side plate tray 65, and the saddle stitched sheets Px are stacked on the bottom plate tray 66. Note that P2c indicates a saddle stitched portion.

As shown in FIG. 1, the side plate tray 65 has an angle θ1 that changes along an arcuate tray guide hole 68 provided in the main body, and therefore the bottom plate tray 65 is provided perpendicularly thereto.
It is also possible to change the angle θ. Also, the bottom plate 6
6 can be moved up and down.

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 stitcher 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 motor, 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 the needle receiver (end), 39 is the tray home position switch (1), 41 is the pulley (1), 42 is the registration roller bracket, 43 is the registration roller home position switch, 44 is the 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), 56
is the motor bracket (2), 58 is the needle guard (middle), 60
is a stitcher support bracket, 61 is a leaf spring (middle),
62 is a stitcher stay, 63 is a push arm (middle),
64 is a push roller (middle), 67 is a bottle, 68 is a tray guide hole, 69 is a paper ejection hole, 70 is a foot (1), 71 is a foot (2), and 72 is 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 the rollers 6 and is stacked on the paper stack trays 52 and 54. At this time, the brush roller 47.
20.40.40', 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 (U) 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 or the number of copies is input using the numeric keypad. Between each number of copies, there is a special paper that can take out a signal that this paper is the boundary between each number of copies, in other words, a paper that will become a cover is inserted in advance.
A detection mark is imprinted with fluorescent dye ink that emits light under ultraviolet light, 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.

Also, even if the color of the cover is detected or the thickness of the cover is detected,
If the color of the cover is detected, it is also possible to automatically replace 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 "no needles" is given.

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 no count, 76 indicates a paper jam, 77 indicates a discrepancy between the number of fed sheets and the number of cents, 78 indicates a number of sheets input instruction, 79 indicates a number of copies input instruction, 8o 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 9-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 copies input instruction display 78 lights up, specify the number of copies using the numeric keypad 82 and press the input key 84 to input.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. When the operation of 0 or more to be input by pressing is completed, the side registration roller 45 of the main body of the bookbinding device, 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.

Stitching -24 and 59 (59 is 2 pieces) each have a sensor (not shown) that detects when the needle runs out, and when the needle runs out, the no-needle indicator 75 lights up and the work 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 the arrow, the clutch lever 99 is
The clutch housing 9 is stuck on the step in 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 is unlatched 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 as the cam 97 rotates, it moves away from the center of the shaft 96.The transmission roller 90 is fixed to the transmission arm 88, and the transmission arm 88 is
Rotates around axis 9B.

Here, when the cam 97 rotates, the transmission arm 88 rotates in the B direction. Since the driven arm 92 is connected to the transmission arm 88 through the transmission spring 94, 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, so that the push roller 22 or 64 pushes the stitcher 24 or 59, and the stitching operation is performed. Cam 97 is 1
When rotated, it returns to the initial state and the clutch housing 95
The clutch lever 99 gets caught and the rotation of the cam stops.

The stroke during stitching changes when the number of sheets of paper to be bound 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 ■ is the tray drive motor (1) 50, the DC motor ■ is the tray drive motor (2) 55, and the DC motor ■ is the side registration roller movement motor (not shown), solenoid l is the B5 solenoid (IO2), solenoid ■ is the A4 solenoid (I
O2, solenoid ■ is the solenoid (2) 20 for B4, solenoid ■ is the solenoid for A3) 20, solenoid V is the solenoid 101 for saddle stitching, solenoid ■ is the solenoid 101 for edge stitching, solenoid W is the folding The roller rotation solenoid (not shown) is connected to a photo sensor.
indicates the paper sensor 10, the photo sensor ■ indicates the paper end sensor 4, the photo sensor ■ indicates the cover detection sensor (not shown), and the micro SWI indicates the wall plate runaway prevention switch 3.
7, Micro Swn is the wall plate home position switch 36, Micro Swl is the resist roller home position switch 43, Micro SwIV is the tray home position switch (1) 39, Micro SwV is the tray home position switch (2). )53 are shown respectively.

(Effects) The present invention is as described above, and according to the bookbinding apparatus according to the present invention, when stacking sheets that are folded in the center one by one on the stacking tray of the paper alignment section, the tray side edges and Since a notch is provided at the rear end and the roller can be moved in and out of the notch according to the size of the paper, accurate alignment can be achieved regardless of the paper size.

[Brief explanation of drawings]

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
), (c) are simplified diagrams 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 a simplified diagram showing each operating state of a conventional bookbinding device. Figure 7 is a side view showing the paper output tray, Figure 8 is a simplified plan view.
9, 10, 11, 12, and 13 are flowcharts showing the main routine of the control operation, FIG. 14 is a flowchart showing the jam removal subroutine, and FIG. Control flowchart, Fig. 16,
FIGS. 17 and 18 are explanatory views 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 (b, Figure 5, Figure 6, tσ, Figure 7, θ, Figure 15, Figure 76, 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 the paper folded one by one by the paper folding unit is deposited in the paper edge alignment unit. A bookbinding device characterized in that cutouts are provided on the sides and rear of the paper loading tray, and alignment rollers can be freely retracted and retracted according to the paper size.