JPS61127566A - Bookbinder - Google Patents

Abstract

PURPOSE:To make it possible to set up the folded state of a sheet hardly restored by employing such a system in which the sheets supplied from the paper sheet feeder are folded, one by one, halfway down their length, and their folded edges are placed in alignment with the base of a stitcher for intermediate sewing. CONSTITUTION:This bookbinder comprises a control section A, a feeder B, a folder C, 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 is gripped and folded by rollers 6 and 7, with its forward edge abutted against one of fences 15 through 18. The sheet, after having been folded, is then put on the stacker tray 52, 54 by a conveying roller 14 and placed in position by the action of rotating rollers 40, 45 before they are sewn into a book form by the operation of a stitcher 59 at the sewing section 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 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 102 press 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, the number of sheets of paper to be creased is limited to about 15 because the sheets are folded all at once, which results in weak folds, and when binding a large number of sheets without creases. Since the sheet of paper is pressed against the stitcher pedestal using a pair of thin rollers, the edges of the sheet of paper are also uneven.

(Purpose) The present invention has been made in view of the shortcomings of the conventional examples, and an object thereof is to provide a bookbinding device that is capable of center-folding with strong folding even when a large number of sheets of paper are folded. do.

(Structure) For this purpose, the bookbinding device of the present invention feeds a predetermined number of sheets of paper one by one from the paper supply section to the paper folding section, and the paper folding section folds each sheet in the middle one by one, and stitches the folds of the half-folded paper. - It is characterized by adopting a saddle stitching mechanism to match the pedestal.

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 C8.
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 on the paper supply unit each time, and each copy is saddle-stitched to produce a total of lθ copies.

(ii) Load the required number of sheets of paper to make all the copies in paper supply section B, and use the numeric keypad to
It takes a lot of manual labor to produce 10 copies of saddle-stitched books one by one.

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 of the saddle-stitched book is very 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 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 It is difficult to detect the signal indicating that the paper has been supplied, and if the signal is detected in error, the pages will be saddle-stitched with uneven pages.

In order to solve this problem, it is necessary to insert special paper from which the signal can be extracted between each copy in advance.

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 to reduce the problems of each method, which is different from conventional bookbinding devices.

Next, using an example in which a cover is not attached, how the paper is folded and bound will be explained, and where the signals that give operation commands for each part are received from. If you do not attach a cover, use the method (:), that is, load the required number of sheets on the paper supply unit each time and perform saddle stitching one copy at a time. is delivered by a detector 4 provided near the paper supply section B, such as a photo sensor.

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 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 by the roller 6 and the roller luff is temporarily eliminated due to the cut-out portion of the roller luff.

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.6 Also, the tip fence1
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. Any system may be used as long as it is installed between the 7° tip 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 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 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.

Figures 5 and 6 (al and (bl) are drawings of the above-mentioned parts, and Figure 5 shows the tray 52, 54, the stitcher 59 for saddle stitching, and the wedge-shaped needle receiver facing downwards. 57, and both trays are rotatable downward around the center-folded portion of the paper.

FIG. 6(a) is an external view of the cylindrical path 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, 40' enter the notches 54a, 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 cutout portion 54c according to the length of the paper.

In this way, the center-folded paper is rolled at 40°40'.
, 45. The rollers 40, 40' are provided parallel to the edge of the tray 54. Furthermore, by making the rollers 45 variable in the direction parallel to the edges as described above, the binding position can always be symmetrical with respect to the center line of the paper even if the paper size changes. 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 rear end of the sheet of paper is pushed by the wall plate until its fold lines up with the edge of the needle holder 57.

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

54'). 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
, are stacked on the side plate tray 65, and the center sheets P2 are stacked on the bottom plate tray 66. Note that pzc indicates a saddle stitched portion.

As shown in FIG. 1, the side plate tray 65 is designed to change the angle θ along an arcuate tray guide hole 68 provided in the main body, and therefore the bottom plate tray 6G is provided perpendicularly thereto.
The angle θ2 can also be changed. 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, 2
9 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 a meter holder (end), 39 is a tray home position switch (1), 41 is a pulley (1), 42 is a registration roller bracket, 43 is a registration roller home position switch, 44 is a pulley (2), 46 is a registration roller drive belt, 48 is a tray drive gear (2), 49 is the drive gear f1+, 50 is the tray drive motor (11, 51 is the motor bracket (1), 53 is the tray home position switch (2), 55 is the tray drive motor (2), 56 is the motor bracket ( 2), 58 is a gauge support (middle), 60 is a stitcher support bracket, 61 is a leaf spring (middle), 6
2 is stitcher stay, 63 is push arm (middle), 6
4 is a push roller (middle), 67 is a pin, 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 align the edges of the paper at predetermined positions.

Thereafter, the edge stitcher 24 is activated by a signal from the detector 4 in the paper supply section B, the edge stitching is performed, the paper stacking 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 entered manually using the numeric keys. A special paper, that is, a paper that serves as a cover, is inserted in advance between each number of copies, from which a signal indicating that this paper is the boundary between each number of copies can be extracted. The paper that serves as the cover is stamped with a detection mark using 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. Alternatively, a method may be used that can detect that the paper is a cover by detecting the color of the cover or by detecting 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 "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 the absence of staples, 76 indicates the vapor jam, 77 indicates the discrepancy between the number of sheets fed and the number of sheets set, 78 indicates the manual instruction for the number of sheets, 79 indicates the instruction to input the number of copies, 80 indicates the number of sheets set,
81 is a count number, 82 is a numeric keypad, 83 is a start key, 1M stop display, 84 is a number of copies per copy, 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 manual 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 the sheet manually. Next, when the number of copies manual instruction display 79 lights up, use the numeric keypad 82 to designate the number of copies, and press the manual key 84 to input it. After the above work is completed, the side registration roller 45 and paper loading tray 5 of the main body of the bookbinding device are installed.
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 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 98.

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 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 ■ is the tray drive motor (1150), the DC motor ■ is the tray drive motor (2155), the DC motor ■ is the side resistor Solenoid I is the solenoid for B5 (1119), solenoid ■ is the solenoid for A4 (
lH9, solenoid m is B4 solenoid (2) 20
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 I is the paper sensor 10, photo sensor ■ is the paper end sensor 4, photo sensor ■ is the cover detection sensor (not shown), micro Swl is the wall plate runaway prevention switch 37, and micro Swn is the wall plate home position switch. 36, Micro Swl [[ is the resist roller home position switch 43, Micro SwN is the tray home position switch (1139, Micro SwV
indicate the tray home position switch (2153).

(Effects) The present invention is as described above, and the bookbinding apparatus according to the present invention feeds sheets one by one from the paper supply section to the paper folding section, and folds the sheets one by one at the folding section. Even a single sheet of paper can be strongly folded.

[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. al, (b
l, (cl 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, 1O, 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. (Fig. 5 of b, Fig. 6, Fig. 7 of tσ, Fig. 8, Fig. 75, Fig. 16, Fig. 17, Fig. 18)

Claims (1)

[Claims] In a bookbinding device that 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, the sheets are fed one by one from the paper supply section to the paper folding section. In addition, the bookbinding device is characterized in that the paper folding unit sends out the paper sheets one by one to the paper folding unit, and the paper folding unit controls the paper sheets to be folded one by one.