JP2000168264A - Bookbinding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To beautifully finish the appearance regardless of the thickness of a paper bundle to be bookbound. SOLUTION: In a face paper attaching process section, a bottom plate 1 and nipping plates 2a and 2b are provided. The driving force of a driving motor 5 is transmitted to a vertically moving block 3 through a first sprocket 6, a chain 9, a second sprocket 7, a cam 10, a first cam follower 11a, a lever 12, a second cam follower 11b, and a rod 4, and the bottom plate 1 and the nipping plates 2a and 2b are raised to a nipping level. Then, the driving force of a motor 15 for a fine adjustment is transmitted to a first gear 14a through a transmission shaft 16, a worm 17, a wheel 18 and a second gear 14b, and a gear shaft 13 is formed at a location which is eccentric to a lever shaft 12a, and a fine adjustment of the nipping level is performed by changing the rocking fulcrum of the lever 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bookbinding machine for beautifully finishing the appearance of a book bundle of any thickness.

[0002]

2. Description of the Related Art In a bookbinding process, a sheet bundle (booklet) formed by accumulating one printed sheet is subjected to a binding process using a stitcher, and a binding process is performed on the sheet bundle. A perfect binding for performing a gluing process is known.
FIG. 6 is a schematic configuration diagram illustrating an example of the arrangement of a bookbinding processing system that performs perfect binding, including a printing machine A, a paper stacking unit B, and a bookbinding machine C. The paper printed by the printing press A is
1. The sheet is transported in the U2 direction, carried into the sheet stacking section B, and enters a bookbinding standby state. The bookbinding machine C includes a bookbinding process start unit C1,
A milling unit C2, a gluing unit C3, and a cover attaching unit C4 are provided.

Next, the operation of the bookbinding machine C will be described. A sheet bundle composed of one sheet of paper stacked horizontally on the sheet stacking unit B is turned 90 degrees in the direction of arrow U3 and is carried into the bookbinding process start unit C1. In the bookbinding process start section C1, the back side of the sheet bundle a is arranged on the level plate b, and the sheet bundle a
The amount of movement in the width direction between the clampers (not shown) is adjusted according to the thickness of the sheet bundle, and the sheet bundle a is clamped by the clampers and sent to the milling processing section C2 in the next step in the direction of arrow U4.

[0004] A milling machine c,
A width adjusting plate (not shown) is provided, and the back surface of the sheet bundle a is flushed when the sheet bundle a passes over the milling machine c, and the pre-processing is performed so that the glue is evenly applied to the entire back surface. Processing is performed. In addition, a narrow groove is machined on the back surface so that the glue can be well penetrated. Next, the sheet bundle a having the rear surfaces flush with each other is sent to the glue processing section C3.

[0005] In the glue processing section C3, glue is stored in a glue tank d, glue processing is performed on the back of the sheet bundle a by a glue roller ex, and unnecessary glue is scraped off by a scraper roller. . When the gluing process is completed, the sheet bundle a is sent to the cover processing unit C4. In the cover attaching section C4, the printed cover f is conveyed from the cover accumulating section onto the nip plates (clamping plates) gx, gy, and the bottom plate h in an arrow U5 direction by an appropriate conveying means such as a conveyor, and glued. The back side of the processed and transported sheet bundle a and the cover f are attached to perform a cover attaching process.

Next, the operation of the cover attaching processing section will be described with reference to FIGS.
This will be described with reference to a schematic explanatory diagram of FIG. FIG. 7 shows a state before the start of the cover attaching operation. The sheet bundle a is carried into the cover attaching unit from the gluing unit at the level P. Glue i is applied to the back of the sheet bundle a. The bottom plate h is in a standby state at the level Q of the reference position, and the cover f is supplied onto the nip plates gx and gy arranged on the bottom plate h.

FIG. 8 shows a state in which the cover application is started. The bottom plate h rises from the height of the level Q to the height of the level P by receiving a force in the arrow S direction. The driving of the bottom plate is performed by converting the rotational force of the motor into a linear motion by an appropriate means and transmitting the driving force. On the other hand, nip plate g
x and gy receive forces from horizontal directions in the directions of arrows U and V, respectively, and slide on the bottom plate to reduce the distance between them.

At this time, the portion near the center of the cover is bent from both sides by being sandwiched between the approaching nip plates gx and gy. Further, when the both ends of the nip plates gx and gy are brought closer to each other and the interval between both ends is made closer to the thickness of the sheet bundle a, the cover f is folded at the thickness of the sheet bundle a and overlaps both sides of the sheet bundle a. The glue i applied to the back surface of the sheet bundle a adheres to the surface of the cover sheet f, and a cover attaching process is performed on the sheet bundle a.

[0009] The cover supplied to the cover processing unit in a planar shape is brought into contact with the nip plate g approaching from opposite directions.
The work of being sandwiched and bent by x and gy and being overlapped on a sheet bundle while being tightened is called nip processing. Also, the height level of the bottom plate at the time of the nip processing is called a nip level.

FIGS. 9 and 10 are explanatory views showing the relationship between the sheet bundle and the cover after the cover attaching process. FIG. 9 is an example in which a cover attaching process is performed on a thin sheet bundle ax. FIG. 1A shows a case where the height (nipping level) of the bottom plate h during the cover attaching process is an appropriate level. In this example, the cover f is superimposed on both sides of the sheet bundle ax, and the corners on the back surface are also bent at almost right angles, resulting in a beautiful finish.

On the other hand, FIG. 9B shows a case where the height of the bottom plate h during the cover attaching process is lower than an appropriate level. In this example, a rounded portion fx is formed on the front cover f near the corner at the back of the sheet bundle ax.
The finish of the cover attaching process for x is poor.

FIG. 10 shows an example in which a cover attaching process is performed on a thick sheet bundle ay. FIG. 1A shows a case where the height of the bottom plate h at the time of the cover attaching process is at an appropriate level, and has a beautiful finish like FIG. 9A. On the other hand, FIG. 10B shows a case where the height of the bottom plate h during the cover attaching process is higher than an appropriate level. In this example, glue-extruded portions ix and iy are formed near the rear surfaces of both sides of the sheet bundle ax, and the cover f protrudes at these portions, and the finish of the cover attaching process on the sheet bundle ay is deteriorated.

[0013]

As described above, in order to improve the finish of bookbinding, the height of the bottom plate at the time of the cover attaching process is adjusted to an appropriate level according to the thickness of the sheet bundle. Is required. To set the appropriate level, a fine level adjustment of 1 mm or less for the nip level is required. However, conventionally, the rotational force of the motor is converted into linear motion by appropriate means to transmit the driving force,
Since the bottom plate is configured to be raised and lowered, it is difficult to perform the above minute level adjustment. For this reason, there is a problem that the finish of bookbinding may be deteriorated.

The present invention has been made in view of the above-described problems, and has as its object to provide a bookbinding machine capable of beautifully performing bookbinding for a sheet bundle of any thickness.

[0015]

The object of the present invention is to provide a bookbinding machine according to the first aspect of the present invention, comprising: a bottom plate; two nip plates which are disposed on the bottom plate so as to face each other; A drive unit, a first power transmission unit connected to the first drive unit, and an elevating unit connected to the first power transmission unit to move up and down the bottom plate. A second driving device and a second driving device are connected to a bookbinding machine that conveys the set sheet bundle onto a bottom plate and a nip plate and raises the bottom plate to a predetermined height to cover the sheet bundle. A second power transmission means, and a connection means for connecting the first power transmission means and the second power transmission means,
By transmitting the power of the driving device to the elevating means, the height of the bottom plate can be finely adjusted.

According to a second aspect of the present invention, in the bookbinding machine according to the first aspect, glue is applied to the glue processing section on the back surface of a sheet bundle formed by stacking one printed sheet. And a scraper disposed adjacent to the gluing roller with respect to the transport direction of the sheet bundle to remove a predetermined amount of glue applied to the back surface of the sheet bundle by the gluing roller.
A profiler, a judging unit for judging the thickness of the sheet bundle, a height changing unit for changing the height of the rotating surface of the scraper, and a control connected to the judging unit and the height changing unit. A height of the rotating surface from the reference position of the scraper is changed according to the thickness of the sheet bundle determined by the determination unit, and the amount of glue applied to the back surface of the sheet bundle is determined. It is configured to adjust.

In the invention according to claim 1, power is transmitted to the bottom plate raised to a predetermined height by the first driving device by the second driving device to finely adjust the height of the bottom plate. . For this reason, the nip level can be finely adjusted according to the thickness of the sheet bundle, so that the bookbinding can be beautifully finished for any thickness of sheet bundle.

In the invention according to claim 2, the height of the rotating surface of the scraper is determined by using a judging means for judging the thickness of the sheet bundle in the gluing processing section which is a pre-process of the cover attaching processing section. Is changed, the amount of glue applied to the back of the sheet bundle can be automatically adjusted to an appropriate value according to the thickness of the sheet bundle. For this reason, in addition to finely adjusting the nip level of the cover attaching processing section, the finish of bookbinding can be performed more beautifully.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a bookbinding machine according to an embodiment of the present invention will be described. FIG. 1 is a schematic side view of the cover processing section. In FIG. 1, reference numeral 1 denotes a bottom plate, 2a and 2b denote nip plates disposed on the bottom plate 1, which have inclined surfaces 2x and 2y, respectively, for facilitating folding of the cover. 3 is for fixing the bottom plate 1, and for fixing the bottom plate 1 and the nip plate 2
The vertical movement block 4 that moves up and down a and 2b is a rod having a distal end fixed to the vertical movement block 3 and a projection 4a provided at the other end.

Reference numeral 5 denotes a drive motor having a first output shaft 5a.
Are connected. Reference numeral 7 denotes a second sprocket connected to the rotating shaft 8, and a chain 9 is stretched between the first sprocket 6 and the second sprocket 7. 10 is a cam connected to the rotating shaft 8 coaxially with the second sprocket 7, 11a is a first cam follower,
11b is a second cam follower. The first and second cam followers 11a and 11b are supported at both ends of the lever 12. 12a indicated by a solid line at the center of lever 12
Is a lever axis.

The first cam follower 11a is in contact with the cam 10, and the second cam follower 11b is in contact with the protrusion 4a of the rod 4. Reference numeral 13 indicated by a broken line denotes a gear shaft formed to be eccentric in the vertical direction with respect to the lever shaft 12a, and formed at the center of the first gear 14a. 15 is a motor for fine adjustment for finely adjusting the height of the bottom plate 2, that is, the nipping level; 16 is a transmission shaft; 17 is a worm;
Reference numeral 8 denotes a wheel, and a second gear 14b is mounted on a wheel shaft 18a.
Are coaxially connected to the wheel 18.

Next, the operation of the cover attaching processing section of FIG. 1 will be described. The cam 10 is in a state where the portion of Ra where the distance between the rotation shaft 8 and the end face is minimum is in contact with the first cam follower 11a, that is, the bottom plate 1 is at the reference position (Q in FIG. 7).
In the standby state. In this state, the drive motor 5 is driven, and the first sprocket 6,
The driving force is transmitted to the second sprocket 7 via the chain 9 to rotate the cam 10 clockwise.

As the cam 10 rotates, the rotating shaft 8 and the cam 1
The distance between the 0 end faces gradually increases. Therefore, the first cam follower 11a is pushed down, and the lever 12 swings upward about the lever shaft 12a. Therefore, the second cam follower 11b supported by the other end of the lever 12 rises.

By raising the second cam follower 11b,
The vertical movement block 3 moves up via the rod 4 and gradually moves the height level of the bottom plate 1 upward from the reference position.
When the portion of Rb where the distance between the rotation shaft 8 and the end face of the cam 10 is the largest is in contact with the first cam follower 11a, the height level of the bottom plate 1 reaches the vicinity of the level P in FIG. At this position, the rotation of the cam 10 is stopped. Cam 1
During the zero rotation operation, no driving force is transmitted to the first gear 14a, and the first gear 14a remains stopped.

Next, the fine adjustment motor 15 is driven to rotate the worm 17 via the transmission shaft 16. Worm 1
The rotation of the wheel 7 rotates the wheel 18 meshed with the worm 17 to change the rotation direction to a direction orthogonal to the rotation direction of the motor 15 for fine adjustment. Wheel 1
By the rotation of 8, the second gear 14b connected to the wheel shaft 18a rotates.

When the second gear 14b rotates, the first gear 14a meshed with the second gear 14b rotates. Since the gear shaft 13 of the first gear 14a is formed eccentric in the vertical direction with respect to the lever shaft 12a, the movement of the lever shaft 12a to the position of the gear shaft 13 causes the swing of the lever 12. The moving fulcrum is changed to a position shifted by the eccentricity between the lever shaft 12a and the gear shaft 13.

As described above, the height of the bottom plate 1, that is, the nip level can be finely adjusted through the rod 4 and the vertical movement block 3 by changing the swing fulcrum of the lever 12. . The height level of the bottom plate 1 can be set to any value by controlling the rotation angle of the rotation shaft of the adjustment motor 15 according to the thickness of the sheet bundle. By performing such fine adjustment of the nip level, the finishing of bookbinding can be performed beautifully for a bundle of sheets of any thickness.

When the fine adjustment of the height level of the bottom plate 1 is completed, a predetermined cover attaching process is performed on the sheet bundle as described above. Next, the drive motor is driven to rotate the cam 10, thereby lowering the rod 4 and returning the height level of the bottom plate 1 to the reference position. That is, as the cam 10 rotates, the rod 4 moves up and down in the arrow T direction.

By the way, as a pre-process for performing the cover attaching process, a predetermined amount of glue is applied to the back surface of the sheet bundle in a gluing processing unit. In order to make the finish of bookbinding beautiful, glue is applied to the back surface in an appropriate amount according to the thickness of the sheet bundle, and it is necessary to perform the above-described cover attaching process on such a sheet bundle. Become.

FIG. 2 is an explanatory view showing a state where the sheet bundle is opened after the bookbinding process. Appropriate amount of glue N on back of paper bundle a
When D1 is applied, each sheet does not come off even when the sheet bundle a is opened as shown in (1). (2) of FIG.
Is the glue ND applied to the back of the thick sheet bundle a.
This is an example of the case where the amount of No. 2 is insufficient, the strength of the adhesive bond is weak, and when the sheet bundle a is opened, a back crack occurs, and the sheet ax near the center comes off, and the binding process is defective. Is shown.

On the other hand, if the amount of glue applied to the back of the thin bundle of sheets a is too large, the corners of the back will bulge outward and round, resulting in a poor finish. As described above, in order to prevent the occurrence of defective bookbinding caused by the amount of glue being too large or too small, it is necessary to appropriately manage the amount of glue applied to the back surface according to the thickness of the sheet bundle a. There is.

Next, a specific example in which the glue is applied to the back surface in an appropriate amount according to the thickness of the sheet bundle will be described. FIG. 3 is an enlarged side view showing the glue processing section C3 of FIG. The hot melt glue Nd is stored in the glue tank d, and the gluing roller ex is rotated in the arrow Qx direction. At this time, the hot-melt glue Nd rises in such a manner as to be wound up by the rotating surface of the gluing roller ex, and sequentially from the leading end in the transport direction to the back of the sheet bundle a being transported in the direction of arrow U4. Glue Nb is applied.

The scroll roller ey installed in front of the gluing roller ex with respect to the transport direction of the sheet bundle rotates in the arrow Qy direction in the same direction as the gluing roller ex. Let it. When the sheet bundle a is transferred to the position of the scraper ey, the glue Nb applied to the back of the sheet bundle a
Excess glue Nc is removed, and glue Nd is left on the back surface of the sheet bundle a to be transferred to the next process. The amount of glue applied to the back surface of the sheet bundle is adjusted by changing the distance between the back surface of the sheet bundle and the rotating surface of the scraper.

FIG. 4 is a schematic perspective view showing a part of the gluing section, partially cut away, and FIG. 5 is a side view seen from the direction of arrow X in FIG. 4 and 5, an example in which the distance between the back surface of the sheet bundle and the rotation surface of the scraper is changed will be described.
4 and 5, reference numeral 21 denotes a glue tank, and 22 denotes an outer frame which is arranged outside the glue tank 21 and has an upper opening. The outer frame 22 is provided as a heat insulating member for blocking heat radiation from the glue tank 21 because the surrounding temperature rises because hot melt-like glue is stored in the glue tank 21.

Reference numeral 23 denotes a gluing roller, 24 denotes a gluing roller bearing for supporting the rotating shaft of the gluing roller 23 on the outer frame 22, and 25 denotes a gluing roller 23 with respect to the transport direction of the sheet bundle.
Scroller, 26a, 26 arranged adjacent to
b is the rotation axis, 27 is the rotation axis 26 of the scroller 25
a to support a in the glue tank 21 and the outer frame 22
Although not shown, the rotary shaft 26b is also supported by a scroll roller bearing supported by the glue tank 21 and the outer frame 22. Gluing roller 23, scraper
The profiler 25 is driven at a predetermined rotational speed by a drive motor (not shown).

Reference numeral 28 denotes a base plate on which support portions 40a and 40b are fixed on both left and right sides as viewed in the direction of arrow X. One end of each of the fulcrums 29a and 29b is accommodated in the support portions 40a and 40b, and the connecting portion 41 attached to the outer frame 22 is provided.
The other ends of the fulcrums 29a and 29b are fixed to a and 41b.
Reference numeral 30 denotes a height adjusting motor whose operation will be described later, 31 denotes an L-shaped lever, and a lever having a flat portion fixed to the bottom surface of the outer frame 22. 32 denotes a height adjusting motor 30. This is the driving gear connected to the output shaft.

Reference numeral 33 denotes a driven gear that meshes with the first gear 32 to transmit the driving force of the height adjusting motor 30. Reference numeral 34 denotes a rotary plate provided for detecting the rotational position of the driven gear 33. A predetermined number of openings 34a, 34b,...
Is provided. A sensor (not shown) is provided adjacent to the rotary plate 34 to detect the rotational position of the driven gear 33, that is, the rotational angle of the output shaft of the height adjusting motor 30.

Reference numeral 35 denotes a gear bearing, reference numeral 36 denotes a transmission shaft connected to the driven gear 33 for transmitting power, and reference numeral 37 denotes an eccentric shaft connected to the distal end surface of the transmission shaft 36. The eccentric shaft 37 is
The shaft of the transmission shaft 36 is connected to the shaft by shifting the position of the shaft. Reference numeral 38 denotes a vertically moving block fixed to the eccentric shaft 37.
39 is a pin. The pin 39 is inserted into a vertical portion of the lever 31 bent in an L shape, and fixes the lever 31 to the vertical movement block 38. The vertical movement block 38 is provided with a crank mechanism, and moves up and down according to the rotation of the eccentric shaft 37.

When the height adjusting motor 30 is driven to slightly rotate the rotating shaft, the driving gear 3 fixed to the rotating shaft is rotated.
The driven gear 3 rotates and meshes with the driven gear 32.
3 rotates in the direction opposite to the driving gear 32. Driven gear 3
By the rotation of 3, the transmission shaft 36 rotates, and power is transmitted to the eccentric shaft 37 connected to the transmission shaft 36, and the eccentric shaft 37 slightly rotates. The vertical movement block 38 is raised or lowered by the rotation of the eccentric shaft 37.

When the vertical movement block 38 moves up or down, the lever 31 connected to the vertical movement block 38 via the pin 39 also moves up or down. The flat surface of the lever 31 is fixed to the bottom surface of the outer frame 22, and the support portion 40
The outer frame 22 slightly rotates around the fulcrums 29a and 29b supported by the a and 40b. Since the outer frame 22 and the glue tank 21 are provided with a screw roller bearing penetrating therethrough, when the outer frame 22 is rotated by the rotation of the eccentric shaft 37 as described above, the screw roller The driving force is transmitted to the glue tank 21 via a bearing for the
1 also rotates.

That is, the height of the glue tank 21 from the horizontal level changes. For this reason, the height of the rotating surface of the scraper 25 changes from the reference position, so that the distance between the rotating surface of the scraper 25 and the rear surface of the sheet bundle to be transferred changes, and The amount of glue scraped off by the profiler 25 is adjusted.

As described above, the height of the scraper 25 provided in the glue tank 21 from the reference position changes according to the turning position of the eccentric shaft 37. An eccentric shaft 37 is connected to the circumferential surface at the end of the transmission shaft 36 connected to the driven gear 33 while shifting the position of the shaft center from the axis of the transmission shaft 36. For this reason, assuming that the position of the eccentric shaft 37 is initially set at the reference position of the scroll roller 25, the transmission shaft 3
The rotation surface of the scroller 25 changes its height from the reference position to the maximum height by half rotation of 6. In addition, the transmission shaft 36
In the next half rotation, the rotation surface of the scroll roller 25 changes in height from the maximum height to the reference position.

The height adjustment of the scroller 25 is automatically set according to the thickness of the bundle of sheets (booklet) to be bound. In order to perform such processing, a control device for outputting a control signal to the height adjusting motor 30 is provided. The amount of rotation of the driven gear, which is detected by a sensor disposed adjacent to the rotating plate 34, that is, the rotation angle of the rotating shaft of the height adjusting motor 30 is input to this control device.

The control device outputs a control signal to the height adjusting motor 30 based on the detection signal input from the sensor.
The height adjusting motor 30 is driven. Motor 3 for height adjustment
The rotation angle of the rotation axis of 0, ie, the scraper 2
When the height of the rotation surface 5 from the reference position reaches a predetermined position set according to the thickness of the sheet bundle, the control device outputs a control signal for stopping the height adjustment motor 30. .

As described above, when the thickness of the sheet bundle is small, the amount of glue applied to the back surface is set to the minimum amount that can obtain the strength, so that useless glue is not attached. Further, when the thickness of the sheet bundle is large, the amount of the glue applied to the back surface is increased so that the necessary strength is obtained. For this reason, an appropriate amount of glue is applied to the back according to the thickness of the sheet bundle, and a gluing process with sufficient strength can be performed.

In the gluing section, an appropriate amount of glue according to the thickness of the sheet bundle is applied, and in the cover attaching section, the nip level is adjusted to an appropriate level to further improve the quality of bookbinding and improve the appearance. Finish can be beautiful. For example, if a large amount of glue is applied to the back surface when the sheet bundle is thin, swelling may occur on the outside, resulting in poor bookbinding.
Even if the amount of glue applied is appropriate, as described in (2) of FIG. 9, the sheet bundle ax
A rounded part fx is formed near the corner on the back of the
The finish is poor.

Further, if the amount of glue applied to the back surface is insufficient when the sheet bundle is thick, the sheet may come off due to insufficient strength as described with reference to FIG. 2 (2). If the nip level is high even if an appropriate amount of glue is applied, as shown in FIG. 9B, glue extruded portions ix and iy are formed near the back surfaces of both sides of the sheet bundle ax, and the cover is formed at this portion. f protrudes, and the finish of the cover attaching process on the sheet bundle ay deteriorates.

In the present invention, the nip level of the cover processing unit is finely adjusted, and an appropriate amount of glue according to the thickness of the sheet bundle is applied in the glue processing unit which is a process preceding the cover processing unit. This makes it possible to finish the appearance beautifully when binding a bundle of sheets of any thickness.

[0049]

As described above, according to the first aspect of the present invention, power is transmitted by the second driving device to the bottom plate raised to a predetermined height by the first driving device, and the height of the bottom plate is increased. Fine-tune the length. Therefore, the nip level can be finely adjusted according to the thickness of the sheet bundle,
The bookbinding can be beautifully completed for a bundle of sheets of any thickness.

According to the second aspect of the present invention, the height of the rotating surface of the scroll roller is determined by using the judging means for judging the thickness of the sheet bundle in the gluing processing section which is a pre-process of the cover attaching processing section. Is changed, the amount of glue applied to the back of the sheet bundle can be automatically adjusted to an appropriate value according to the thickness of the sheet bundle. For this reason, in addition to finely adjusting the nip level of the cover attaching processing section, the finish of bookbinding can be performed more beautifully.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a cover processing unit used in a bookbinding machine according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram illustrating a state in which a sheet bundle having glue applied to the back surface is opened.

FIG. 3 is a side view of a gluing processing unit.

FIG. 4 is a perspective view of a gluing processing unit.

FIG. 5 is a side view as viewed in the direction of arrow X in FIG. 4;

FIG. 6 is a configuration diagram illustrating an example of a bookbinding processing system.

FIG. 7 is an explanatory diagram of an operation of a cover attaching processing unit.

FIG. 8 is an explanatory diagram of an operation of a cover attaching processing unit.

FIG. 9 is an explanatory diagram illustrating a relationship between a sheet bundle and a cover after a cover attaching process.

FIG. 10 is an explanatory diagram illustrating a relationship between a sheet bundle and a cover after a cover attaching process.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bottom plate 2a, 2b Nip plate 3 Vertical movement block 4 Rod 5 Drive motor 6, 7 Sprocket 9 Chain 10 Cam 11a, 11b Cam follower 12 Lever 12a Lever shaft 14a, 14b Gear 15 Motor for fine adjustment Reference Signs List 16 Transmission shaft 17 Worm 18 Wheel 21 Glue tank 22 Outer frame 23 Glue roller 25 Scraperer 29 Supporting point 30 Height adjusting motor 31 Lever 37 Eccentric shaft

Continuing from the front page (72) Inventor Hiroto Nakanishi 1601 Asahi Joshino, Asahi-cho, Takashima-gun, Shiga Prefecture In-house Horizon International Co., Ltd. 1601 below Horizon International Co., Ltd. In-house F-term (reference) 3F108 GA10 GB01 HA02 HA13

Claims (2)

[Claims] 1. A bottom plate, two nip plates disposed on the bottom plate so as to face each other and on which a cover is placed, a first driving device, and first power transmission means connected to the first driving device. , First
A lifting / lowering means connected to the power transmission means for raising and lowering the bottom plate, and transporting the sheet bundle coated with glue on the back surface by the gluing processing unit onto the bottom plate and the nip plate, and raising the bottom plate to a predetermined height. And a second drive unit, a second power transmission unit connected to the second drive unit, the first power transmission unit and the second power transmission unit. And a connecting means for transmitting the power of the second driving device to the elevating means, and finely adjusting the height of the bottom plate. 2. A gluing roller for applying glue to the back of a sheet bundle formed by accumulating one printed sheet in the gluing processing section, and a gluing roller in a direction of transport of the sheet bundle. −
And a scraper which is disposed adjacent to the roller and removes a predetermined amount of glue applied to the back surface of the sheet bundle by the gluing roller.
Determining means for determining the thickness of the bundle of sheets, height adjusting means for adjusting the height of the rotating surface of the scraper, and a control device connected to the determining means and the height adjusting means. The height of the rotating surface from the reference position of the scroller is changed in accordance with the thickness of the sheet bundle determined by the determination means, and the amount of glue applied to the back of the sheet bundle is adjusted. The bookbinding machine according to claim 1, wherein: