JP4093375B1 - Bookbinding machine - Google Patents

Abstract

[PROBLEMS] A bookbinding machine that moves back and forth a single clamper has a transport mechanism, a clamper, and a paste application mechanism that are stable enough to handle PUR hot melt with a thin coating layer, and have detailed settings on the control surface. Develop a bookbinding machine that can accurately reflect the above.
The clamper is guided by two upper and lower rails, and a linear motion device using a ball screw as a transport mechanism is used to eliminate unstable factors during transport of the clamper and to set detailed speed and stop time. Provided is a bookbinding machine that can reflect accurately and has a glue application mechanism that uses a nozzle injection system in which glue does not touch air.
[Selection] Figure 1

Description

The present invention includes a clamper that moves while holding a collation book, a transport mechanism that conveys the clamper, a milling mechanism that cuts the end of the spine portion of the collation book, and a paste applied to the spine portion of the collation book The present invention relates to a bookbinding machine having at least a glue applying mechanism and a nipping mechanism for attaching a cover to a collated book and shaping a spine, and more particularly to a bookbinding machine having the following configuration.
<Configuration 1>
A clamper that holds and moves the collation book, a transport mechanism that conveys the clamper, a milling mechanism that cuts the end of the spine portion of the collation book, and a glue application mechanism that applies glue to the spine portion of the collation book And, in a bookbinding machine having at least a nipping mechanism that attaches a cover to a collated book and shapes the spine,
The clamper is guided by two rails, an upper rail and a lower rail, fixed to the frame of the bookbinding machine, and conveyed in the horizontal direction.
The transport mechanism that transports the clamper is a linear motion device that uses a ball screw. The clamper transports the clamper from the starting position, that is, the collating main supply position, to the nipping mechanism through the milling mechanism and the glue application mechanism, and for a certain period of time by the nipping mechanism. After stopping and removing the collated book with cover, it can be sent back to the starting position, i.e. the collated book supply position,
When the front side is the side where the clamper's book is held,
A linear motion unit using a ball screw is fixed to the right side of the center of the back of the clamper.
The triangular apex of the movable part of the clamper is biased to the left in plan view, and the connecting shaft is skewed to the left in plan view, so the rightmost space in the space formed between the movable part and the body Is configured wider than the leftmost space,
On the upper part of the clamper, a guide portion having a guide roller for restricting movement of the clamper in the front-rear direction and a guide roller for restricting movement of the clamper in the up-down direction is provided,
A guide portion having a guide roller for restricting movement of the clamper in the front-rear direction and a guide roller for load receiving to be in contact with the lower rail is provided at the lower portion of the clamper.
The upper rail and the lower rail have a front plate, a rear plate, a recess, and a horizontal plane,
The guide roller that restricts the movement of the upper part of the clamper in the front-rear direction is housed in the recess of the upper rail with the clamper standing upright, and is configured so that the clearance between the front rail and the rear plate of the upper rail is substantially equal. ,
The guide roller that restricts the movement of the lower part of the clamper in the front-rear direction is housed in the recess of the lower rail while the clamper is standing upright, and is configured so that the clearance between the front plate and the rear plate of the lower rail is substantially equal. ,
It has a controller that can control the clamper transport speed and stop time at the nipping mechanism,
In the nozzle spraying system, the glue application mechanism sprays the glue from the nozzle and applies it to the spine of the book.
The transport speed of the clamper is selected in relation to the thickness of the collage book, i.e., the clamper transport speed is set higher when the thickness of the collage book is thin, and the clamper speed is increased when the thickness of the collage book is thick. Set the transport speed slower ,
Adjustment of the width of the nozzle is performed by changing the effective width of the nozzle by sliding a sliding plate covering the nozzle of a certain width in the front-rear direction.
This is a bookbinding machine.

  A bookbinding machine that applies glue to the spine of a collated book, attaches a cover, and binds is widely used in bookbinding operations. This type of bookbinding machine B1 generally has a configuration as schematically shown in FIG. That is, a device for holding and transporting a plurality of collated books (not shown) called clampers P1 is provided to a transport mechanism CV1 that rotates in a ring (arrow γ), and is supplied to the clamper P1 (arrow δ). The collated book is first entered into the milling mechanism M1 while being pinched by the clamper P1 with the spine down. Here, the collated book (not shown) whose end portion of the spine is cut by a disk-shaped cutter (not shown) is then carried to the glue application mechanism G1.

The collated book with the glue applied to the spine is then transported to the nipping mechanism N1, where the front cover, back cover, and spine integrated cover (not shown) are pressed and shaped. And the bookbinding process is completed, and the collated book (not shown) with the cover attached is removed from the clamper P1 (arrow ε). At this stage, the attached cover is stuck and bound to the outside of the collated book, but in a later process, the three parts except for the spine are cut into one book. Completed as a book. Of course, the installation of the cover and belt is a separate process.

However, as shown in FIG. 36, the type of bookbinding machine that circulates a plurality of clampers P1 is rather large, and is used when the number of bookbinding copies is in units of thousands or tens of thousands. It is. Examples of such a large bookbinding machine include bookbinding machines disclosed in the following Patent Documents 1, 2, and 3. In such a large bookbinding machine, the transport mechanism is a horizontally-circulated chain CN, and a plurality of clampers P1 are fixed to the chain CN, and the milling mechanism M1, the glue applying mechanism G1, and the nipping mechanism N1 are provided. It is configured to pass. The state in which a plurality of clampers P1 are mounted on the chain CN that circulates in the horizontal direction is apparent in FIG.

On the other hand, in the case of bookbinding with a small number of bookbinding parts of several hundreds to at most about 1,000, use of such a large bookbinding machine increases waste. In other words, because it is a large machine, it takes time and effort to adjust the book according to the size and thickness of the book to be bound, while starting the bookbinding machine and adjusting each part while looking at the state of the machine One hundred parts and two hundred parts are bound. Even with a small number of bookbinding, the effort required to adjust the machine is the same as that for a large number of bookbinding, so a large machine is occupied for a certain period of time for bookbinding with a small number of copies, which is extremely efficient for field work. Is a bad way. Therefore, a small bookbinding machine in which a single clamper reciprocates has been developed for bookbinding with such a small number of copies. FIG. 28 schematically shows the basic configuration thereof.

A bookbinding machine B2 shown in FIG. 28 is sandwiched between a clamper P2 that moves in a horizontal direction guided by a rail RL that extends horizontally to a base frame F, a transport mechanism CV2 that transports the clamper P2, and a clamper P2. A base T for positioning the spine bb of the collated book b, a milling mechanism M2 equipped with a cutter (not shown), a roller-type glue applying mechanism G2, and a front cover and a back cover on the collated book b. It is comprised from the nipping mechanism N2 which crimps and shapes the cover (not shown) which united the spine. Then, when the clamper P2 is at the left end (start position) of the bookbinding machine B2, the collation book b is clamped by the clamper P2 (the position of the spine is determined by the base T), and the clamper P2 clamps the collation book b As it is, it moves to the milling mechanism M2, the glue applying mechanism G2, and the nipping mechanism N2. In FIG. 28, the illustration of the drive device and the control device is omitted.

During this time, the collated book b is cut at the end of the spine bb by the milling mechanism M2, the glue for the bookbinding is applied to the spine bb with a certain thickness by the glue applying mechanism G2, and finally the bookbinding machine It is stopped for a certain period at the right end of B2, and during this time, a cover sheet (not shown) is attached and shaped to the spine bb by the nipping mechanism N2, and is removed from the clamper P2. The clamper P2 from which the collation book b has been removed moves horizontally to the left and is transported to the left end (start position) of the bookbinding machine B2, where a new collation book b is sandwiched next. Cycle begins. In this way, by repeating the above-described cycle, the cover is pasted and shaped on a plurality of collated books b, b,. Examples of such a small bookbinding machine are shown in Patent Documents 4, 5, and 6 below.

A small bookbinding machine B2 having a basic configuration as shown in FIG. 28 has a configuration in which a cover is attached to a collated book by causing a single clamper P2 to reciprocate. Therefore, as shown in FIG. Compared with the large bookbinding machine B1, the production amount per unit time (the number of copies that can be attached to the collated book) is considerably low. That is, it takes a long time to complete a series of steps for attaching the cover to one booklet. However, in the case of bookbinding with a small number of bookbinding copies of about several hundred to 1,000 copies, the following great merits occur compared to the large bookbinding machine B1 (see FIG. 36).

That is, since a large bookbinding machine B1 as shown in FIG. 36 continuously conveys a plurality of clampers P1, 100 parts and 2 hundred parts of bookbinding are completed while checking the bookbinding condition as described above. However, in the small bookbinding machine B2, in order to check the condition of the machine and the bookbinding condition, first book only one booklet, stop the machine once, and then check the bookbinding condition and restart the machine. It is possible to make adjustments and use only one book to check the book. Moreover, since the whole structure is simple, it does not take time for adjustment. Therefore, if bookbinding with a small number of copies is performed by the small bookbinding machine B2, the operating efficiency of the large bookbinding machine B1 can be increased accordingly.

In the past, there were many first-print copies of publications, and there were relatively few opportunities to use such a small bookbinding machine, but recently there has been a tendency for the number of first-print copies to be reduced due to changes in publication letters. There are many cases where the first edition is less than 1,000 copies. Also, in the so-called “on-demand publishing” that has recently appeared, only the number of copies that have been ordered is printed and bound, and in such a case, the number of bound copies is further drastically reduced. In addition, recently, there is an increasing number of cases in which a small number of bookbinding of printed matter output from a computer by an inkjet printer or the like is required without using a normal printing press. In such a case, it is very unlikely that a conventional large-sized bookbinding machine will be used from the viewpoint of efficiency, and in this respect as well, the demand for small-sized bookbinding machines that can efficiently perform small-volume bookbinding has increased in recent years. Tend to.

The demand for a small bookbinding machine that reciprocates a single clamper in the horizontal direction has been increasing in recent years as described above, but there are several problems with its configuration, and improvements have been made each time. For example, in the bookbinding machine B2 shown in FIG. 28, as the transport mechanism CV2, the chain Cn circulates around the sprockets Sp1 and Sp2 provided on the left and right sides of the frame F, and the sprocket Sp1 (or sprocket) is driven by a motor (not shown). The chain Cn is rotated in the vertical direction by rotating Sp2). However, in this type of machine, two major problems have hitherto been pointed out.

First, in the method of rotating the chain Cn in the vertical direction in this way, there is a problem that the clamper P2 attached to the chain Cn is not stable. For example, in the large bookbinding machine B1 as shown in FIG. 36, the chain CN is configured to circulate in the horizontal direction, so that a part of the chain is attached to the rear surface of the clamper as shown in FIG. The clamper travels relatively stably by guiding the upper and lower rollers of the clamper with the two upper and lower rails. However, in the case of the bookbinding machine B2 as shown in FIG. 28, since the height of the chain Cn to be pulled differs between when the clamper P2 goes forward and when it returns, special measures must be taken for this point. .

This point is usually dealt with as follows in a machine such as the bookbinding machine B2 shown in FIG. That is, as shown in FIGS. 29 and 31, a long hole H1 is formed in a mounting plate S1 that is vertically fixed to the back surface of the clamper P2 via one or two mounting plates s, and a chain is formed in the long hole H1. A chain pin cp fixed to a part of Cn through a mounting plate Cns (see FIG. 30) is inserted. The mounting plate S1 is configured to be slightly longer than the diameters of the sprockets Sp1 and Sp2, so that the upper end of the long hole H1 is exactly at the position of the upper portion Cn1 of the chain Cn, and the lower end of the long hole H1 is Since the chain pin cp is just located at the lower portion Cn2 of the chain Cn, as a result, the chain pin cp slides in the long hole H1 for one reciprocation in one cycle.

The details of this one cycle are as shown in FIGS. That is, the sprockets Sp1 and Sp2 rotate clockwise in front view, and the ascending portion Cn1 of the chain Cn moves rightward in the front view, and the descending portion Cn2 of chain Cn moves leftward in the front view. Yes. When the clamper P2 performs the forward movement (movement in the right direction in the drawing), the chain pin cp is positioned at the upper end of the long hole H1 of the mounting plate S1, and the movement in the right direction of the ascending portion Cn1 of the chain Cn. Conveys the clamper P2 to the right via the mounting plate S1 (FIG. 34a). When the clamper P2 performs the return movement, the chain pin cp is positioned at the lower end portion of the long hole H1 of the mounting plate S1, and the leftward movement of the descending portion Cn2 of the chain Cn is clamped via the mounting plate S1. P2 is conveyed leftward (FIG. 34b).

FIG. 34c shows a state in which the clamper P2 is located at the left end of the bookbinding machine B2 (see FIG. 28). At this time, the chain pin cp moves upward from the lower end portion to the upper end portion of the long hole H1 of the mounting plate S1. Do. FIG. 34d shows a state in which the clamper P2 is located at the right end of the bookbinding machine B2 (see FIG. 28). At this time, the chain pin cp moves downward from the upper end to the lower end of the long hole H1 of the mounting plate S1. Move. In this way, the chain pin cp reciprocates once through the long hole H1 of the mounting plate S1 while one cycle elapses.

However, when such a configuration is adopted, a major problem that arises with respect to the stability of the clamper P2 is that the clamper P2 is stabilized by two upper and lower rails as in the case of a large bookbinding machine (see FIG. 2 of Patent Document 3 below). 28, the clamper P2 must be supported by one lower rail RL as shown in FIG. That is, as shown in FIG. 31, the upper rail must be omitted because the mounting plate S1 is suspended from the vicinity of the center of the back surface of the clamper P2 to a height far beyond the upper end portion P2α of the clamper P2. Therefore, a large instability factor is generated with respect to the travel of the clamper P2.

Moreover, the clamper P2 is not directly fixed to the chain as in the case of a large bookbinding machine (see FIG. 2 of the following Patent Document 3), but by a chain pin cp inserted through the long hole H1 of the mounting plate S1. Because it is transported, it becomes even more unstable. In particular, when the spine bb of the collation book b is cut by the milling device M2 (see FIG. 34), a large force acts on the spine bb, so that the clamper P2 tilts back and forth (direction x in FIG. 31). And a vertical movement (direction y in FIG. 31) is induced. This forward / backward tilt and vertical movement are suppressed by the lower rail RL and the rollers R1 and R2 that rotate in the horizontal direction, and the rollers R3 and R4 that contact the rail RL and rotate in the vertical direction under the load of the clamper P2. However, due to the lack of the upper rail, the suppression effect naturally has to be unstable. Compared with the clamper P1 of the large bookbinding machine B1 (see FIG. 36), its stability is It must be said that it gets worse.

In addition, as a result of the clamper P2 becoming unstable, the clearance c1 between the rollers R1, R2 and the front plate RL1 of the rail RL accommodated in the recess RLa of the rail RL, and between the rollers R1, R2 and the rear plate RL2 of the rail RL The clearance c2 cannot be made too narrow. This is because, when the tilting of the clamper P2 in the front-rear direction (direction x in FIG. 31) becomes large, when the clearances c1 and c2 are narrow, the force with which the rollers R1 and R2 are pressed against the front plate RL1 or the rear plate RL2 increases. This is because the frictional force generated in the rollers R1 and R2 is increased and the travel of the clamper P2 is hindered, so that the clearances c1 and c2 need to be kept wide to some extent. However, if the clearances c1 and c2 are widened, a vicious circle occurs in which the tilting of the clamper P2 in the front-rear direction (direction x) increases.

Such instability of the travel of the clamper P2 is that the travel of the clamper P2 is to be guided by only one rail RL, so that the height of the clamper P2 is increased to some extent as shown in FIG. Of course, it is also conceivable to provide a clamper P3 with a rail RLu to stabilize traveling. However, when this is done, the diameters of the sprockets Sp1 and Sp2 become considerably small, and the running stability is threatened on that surface. That is, in order to reduce the diameters of the sprockets Sp1 and Sp2 and not to decrease the transport speed of the clamper P3, the sprockets Sp1 and Sp2 must be rotated at a higher speed, and the sprockets having a smaller diameter are rotated at a higher speed. Naturally, the accompanying instability factors increase. Further, the clamper P3 increases in weight by the height increase L1 compared to the clamper P2, becomes unstable, and requires more energy for conveyance.

In another method, as shown in FIG. 33, a mounting plate s for mounting the mounting plate S1 is lengthened and protruded rearward, and the position of the mounting plate S1 is lowered as far back as possible to provide an upper rail RLu. It is. In this way, the clamper P4 may have the same height as the clamper P2, and it is not necessary to reduce the diameters of the sprockets Sp1 and Sp2. However, another problem occurs this time. That is, as shown in FIG. 33, the distance d2 from the chain Cn to the spine bb (the point of action of the force) of the collated book b is much larger than the distance d1 in the clamper P2 (FIG. 31) or the clamper P3 (FIG. 32). It is a problem that it becomes long.

As is well known, when a chain is used as the transport mechanism, the chain may be slack or sway in a direction perpendicular to the transport direction. It is desirable that the factor of instability increases as the distance between the chain and the conveyance object increases. Therefore, there is little problem when the clamper is directly fixed to a part of the chain as in the case of a large bookbinding machine (see FIG. 2 of the following Patent Document 3). An indirect attachment method of inserting the chain pin cp through the long hole H1 of the attachment plate S1 must be taken. Therefore, the instability factor is already included even at the distance d1 shown in FIGS. 31 and 32. However, if this further extends to the distance d2 in FIG. 33, the instability factor further increases. Therefore, the mounting method as shown in FIG.

As described above, in the small bookbinding machine B2, the method of transporting the clamper P2 by rotating the chain Cn vertically causes many unstable factors because the transport mechanism CV2 is the chain Cn. FIG. 5 is a diagram in which an unstable factor is managed within a certain range by reducing the distance d1 between the chain Cn and the spine bb (the point of action of force) of the collated book b as much as possible, and is guided by the lower rail RL. Actually, the bookbinding machine B2 having the configuration shown in FIG. 31 has been used.

Next, the second problem in the bookbinding machine B2 configured as shown in FIG. 28 will be described in detail. In the bookbinding machine B2 shown in FIG. 28, at the right end of the nipping mechanism N2, a cover is attached to the spine bb of the collation book b, and further formed and the finished book is removed from the clamper P2. The clamper P2 must be stopped at a predetermined position. However, it is easy to temporarily stop the power from the drive source using an electromagnetic clutch or the like, but since the inertial force acts on the driven chain Cn, it cannot be stopped suddenly, and it must be stopped. The position cannot be pinpointed. Since this point has a great adverse effect on the cover sticking and shaping work in the nipping mechanism N2, a method of physically stopping with a stopper (not shown) or the like was also considered, but then an impact is applied to the clamper P2, This time, there was concern about the negative effects.

Therefore, for example, a method as shown in FIG. 35 has been considered. This is because the mounting plate fixed to the clamper P2 is S2 longer than the mounting plate S1 in FIG. 31 (of course, the long hole is also longer H2), and small sprockets Sp3 and Sp4 are used at the position of the nipping mechanism N2 at the right end of the machine. Thus, a vertical portion Cn3 in which the chain Cn moves vertically is provided. As a result, the clamper P2 is in a stopped state while the chain pin cp moves in the vertical portion Cn3, and during this time, the nipping mechanism N2 performs a predetermined operation. When the work is completed, the clamper P2 is guided to the descending portion Cn2 of the chain Cn to start the return movement and returns to the starting end.

As an example using such a method, there is a “bookbinding apparatus” shown in Patent Document 4 below. In the bookbinding apparatus, after the cover is attached by the nipping device, the clamper is further moved to the right and the collated book with the cover is removed from the clamper at the right end of the device. Is slightly different, but a portion where the chain moves vertically at the position of the nipping mechanism is provided, and the clamper is temporarily stopped at this portion.

In this way, it is possible to place the clamper P2 in a paused state while the cover is attached and shaped at the position of the nipping device. However, when such a configuration is adopted, the length (height) of the mounting plate S2 fixed to the clamper P2 becomes long, and the circular orbit of the chain Cn becomes complicated, and the vertical width becomes wide in part. As a result, the instability factors of the drive device (not shown) and the clamper P2 itself increase. Furthermore, the time for the chain pin cp to move in the vertical part Cn3 of the chain Cn varies depending on the moving speed of the chain Cn. The problem of having to calculate the moving speed and adjust the moving speed of the chain Cn in that way remains.

The bookbinding machine B2 shown in FIG. 28 or the bookbinding machines shown in Patent Documents 4, 5, and 6 below all use a chain as a transport mechanism, and cannot avoid the above-described problems. Furthermore, in recent years, the control method has been remarkably evolved due to the development of computer technology, and in terms of software, the control of drive devices such as motors that drive the transport mechanism has been detailed at a detailed level that has been impossible until now. It became possible to set. However, since the transport mechanism itself is a chain, the problem of slack and inertia that is inherent to the chain becomes a kind of brake, and no matter how detailed the software that makes the movement is, the details of the mechanism The state where it was not possible to reflect the setting and only a rough movement as in the past has been continued.

However, in recent years, the reduction in the number of copies required for bookbinding has become more prominent, while the types of bookbinding required have further diversified, and a machine that properly finishes a small number of books with different settings has been required. ing. In terms of software, even if it reaches a level that can meet any number of detailed settings as described above, the chain is used as the transport mechanism, and the small bookbinding machine that reciprocates the clamper At present, technological innovation is at a standstill.

Furthermore, recently, there has been a noticeable tendency for the properties of the bookbinding glue itself to attach the cover to the spine of the collated book. It has become clear that a small bookbinding machine that causes the user to move back and forth cannot cope with the newly-developed PUR hot melt type glue for bookbinding.

Since the PUR type hot melt is described in detail in the following Patent Document 7, only the characteristics are listed here. The PUR type hot melt is an EVA type hot melt that has been conventionally used. The melt has the following characteristics.
<1> Extremely strong PUR hot melt reacts with air and cures, as is clear from its name, “Reactive polyurethane resin” (Poly Urethane Reactive Resin). Regardless of this, strong adhesive strength can be maintained. Moreover, since it penetrates and hardens | cures between paper fibers, it can have a strong adhesive force also from this point.
<2> The coating layer can be thinned As a secondary effect by the strong adhesive force, the coating layer when applied to the spine of the collated book can be thinned. For example, it has become possible to reduce the thickness of the coating layer, which is required to be about 1 mm to 1.4 mm in the conventional EVA hot melt, to half the thickness of 0.3 mm to 0.5 mm. As a result, the spine has a smooth finish, and it is possible to create a “book that opens at 180 °” with adjacent pages even with wireless binding.
<3> The finish of the spine is beautiful. The optimum application temperature of the conventional EVA hot melt is around 180 °, but the optimum application temperature of the PUR hot melt is around 120 °. Therefore, the amount of water evaporation of the paper in the coated portion is smaller than that of the EVA hot melt, thereby eliminating the spine-waving phenomenon and making the finish of the spine much more beautiful. In addition, it has become possible to easily process a round back after sticking the cover.
<4> Suitable for recycling Since conventional EVA hot melt dissolves in a solvent during recycling, EVA hot melt fine particles are mixed into the pulp. In order to avoid this, books using EVA-based hot melt had to be cut one by one during recycling, which was a major bottleneck in book recycling. However, since the PUR hot melt does not dissolve in the solvent and remains as a large lump, it can be easily removed later even during recycling, and there is no need to perform a spinal cutting operation.

Since the PUR type hot melt has a remarkable effect as described above, the switching from the EVA type hot melt is gradually progressing. However, mainly from the above feature <2>, it has become clear that the use of a small bookbinding machine of the type in which the clamper moves back and forth with a chain is extremely difficult. That is, since the coating layer is thin in the PUR hot melt, the milling mechanism requires much more accurate accuracy than the EVA hot melt in terms of the cutting dimension and the horizontal level of the cut surface. The glue application mechanism also requires much more precise accuracy than the EVA hot melt in the thickness of the application layer. That is, in the EVA hot melt, for example, an error of 0.1 mm is within one-tenth of the entire glue coating layer, which is within the allowable range. However, in the PUR hot melt, the error of 0.1 mm is the same as the glue coating layer. This is one-fifth of the total, and in some cases one-third, which greatly affects the finishedness of bookbinding.

As mentioned earlier, in the case of a bookbinding machine in which the clamper is moved back and forth with a chain that circulates vertically, the stability of the clamper becomes worse compared to a large bookbinding machine that circulates the chain horizontally. As long as the melt was used, the clamper instability was absorbed as acceptable. However, when using PUR hot melts that require stricter accuracy, instability of the clamper that was allowed in EVA hot melts sometimes appears as a fatal bookbinding mistake. It can be enough. In this respect, a bookbinding machine that moves the clamper back and forth cannot be used unless a stable transport mechanism for the clamper is realized. However, as long as the transport mechanism that moves the clamper back and forth with the chain is used as described above, the stability of the clamper has been improved to the extent that it cannot be expected any more. Currently, the development of bookbinding machines is in demand.

In addition, regarding the use of a PUR hot melt, another disadvantage of a bookbinding machine configured to reciprocate a conventional clamper is mentioned. In this type of conventional bookbinding machine, the glue application mechanism has a configuration mainly composed of rollers. However, according to the nature of the PUR system hot melt that solidifies when it comes into contact with air, in the case of a glue application mechanism mainly composed of rollers, the glue in the glue tank is exposed to the air, which is not preferable. I can say that.

Still, in a large bookbinding machine configured to circulate a plurality of clampers in the horizontal direction, the glue in the glue tank is quickly consumed and replenished with new glue. For example, the glue disclosed in Patent Document 7 below A glue application system that uses rollers as long as the glue tank structure itself is devised and the temperature of the glue tank is kept at the proper application temperature, just like a bookbinding machine with a tank. However, it was possible to fully demonstrate its functions.

However, in the bookbinding machine that moves the clamper back and forth, the amount of bookbinding per unit time is much smaller, so the consumption of glue inside the glue tank is also reduced, and the time that glue is exposed to air Also gets longer. Then, when a PUR hot melt is used, the curing of the paste becomes remarkable, and it cannot withstand actual use. In this way, when a glue application mechanism using a roller is used, in a bookbinding machine that moves the clamper back and forth, a PUR system hot melt cannot be used in practice, so even in the glue application mechanism It is clear that a countermeasure is needed.
JP-A-9-76661 Japanese Patent Laid-Open No. 11-334244 JP 2003-326870 A Japanese Utility Model Publication No. 54-20713 U.S. Pat. No. 4,484,850 JP 11-34536 A Japanese Patent Application No. 2007-258297 JP 2003-269567 A JP 2003-287038 A Utility Model Registration No. 3132863

From the above, the problems to be solved by the present invention are set as follows.
<Problem 1>
In a bookbinding machine that moves a clamper back and forth, a bookbinding machine having a transport mechanism that can stably transport a clamper instead of a chain is developed as a transport mechanism.
<Problem 2>
In particular, the transport mechanism is highly stable enough to cope with a thin PUR hot melt having a coating layer that has recently been used.
<Problem 3>
In addition, a transport mechanism having a configuration capable of sufficiently reflecting detailed settings of software on the control surface that has been further enhanced in recent years.
<Problem 4>
In accordance with the improvement of the transport mechanism, the clamper is also configured to maintain the corresponding stability.
<Problem 5>
Also in the glue application mechanism, the conventional system in which the glue is applied mainly by a roller cannot use the PUR hot melt, so that the glue application mechanism can use the PUR hot melt.

The present invention has been made to solve the above-described problems, and provides the following solution means.
<Solution 1>
A clamper that holds and moves the collation book, a transport mechanism that conveys the clamper, a milling mechanism that cuts the end of the spine portion of the collation book, and a glue application mechanism that applies glue to the spine portion of the collation book And, in a bookbinding machine having at least a nipping mechanism that attaches a cover to a collated book and shapes the spine,
The clamper is guided by two rails, an upper rail and a lower rail, fixed to the frame of the bookbinding machine, and conveyed in the horizontal direction.
The transport mechanism that transports the clamper is a linear motion device that uses a ball screw. After stopping and removing the collated book with cover, it can be sent back to the starting position, i.e. the collated book supply position,
When the front side is the side where the clamper's book is held,
A linear motion unit using a ball screw is fixed to the right side of the center of the back of the clamper.
The triangular apex of the movable part of the clamper is biased to the left in plan view, and the connecting shaft is skewed to the left in plan view, so the rightmost space in the space formed between the movable part and the body Is configured wider than the leftmost space,
On the upper part of the clamper, a guide portion having a guide roller for restricting movement of the clamper in the front-rear direction and a guide roller for restricting movement of the clamper in the up-down direction is provided,
A guide portion having a guide roller for restricting movement of the clamper in the front-rear direction and a guide roller for load receiving to be in contact with the lower rail is provided at the lower portion of the clamper.
The upper rail and the lower rail have a front plate, a rear plate, a recess, and a horizontal plane,
The guide roller that restricts the movement of the upper part of the clamper in the front-rear direction is housed in the recess of the upper rail with the clamper standing upright, and is configured so that the clearance between the front rail and the rear plate of the upper rail is substantially equal. ,
The guide roller that restricts the movement of the lower part of the clamper in the front-rear direction is housed in the recess of the lower rail while the clamper is standing upright, and is configured so that the clearance between the front plate and the rear plate of the lower rail is substantially equal. ,
It has a controller that can control the clamper transport speed and stop time at the nipping mechanism,
In the nozzle spraying system, the glue application mechanism sprays the glue from the nozzle and applies it to the spine of the book.
The transport speed of the clamper is selected in relation to the thickness of the collage book, i.e., the clamper transport speed is set higher when the thickness of the collage book is thin, and the clamper speed is increased when the thickness of the collage book is thick. Set the transport speed slower ,
Adjustment of the width of the nozzle is performed by changing the effective width of the nozzle by sliding a sliding plate covering the nozzle of a certain width in the front-rear direction.
This is a bookbinding machine.

  According to the solution 1 of the present invention, the clamper is guided by the two rails of the upper rail and the lower rail fixed to the frame of the bookbinding machine and is transported in the horizontal direction. Compared to a conventional bookbinding machine that reciprocates a clamper, the stability of the clamper has been greatly improved. In particular, since the upper rail is provided, the clamper can be prevented from moving back and forth and up and down, and as a result, it is possible to obtain the stability of the clamper that can cope with a thin coating layer of PUR hot melt.

Further, the transport mechanism for transporting the clamper is a linear motion device using a ball screw, and the clamper is transported from the starting end position, that is, the exact book supply position, to the nipping mechanism through the milling mechanism and the glue applying mechanism, After stopping for a certain period of time and removing the collated book with cover, it can be fed back to the starting position, i.e., the collated book supply position, so it is much more stable than a transport mechanism using a chain. The instability that comes from the slack and inertia inherent in the chain was completely avoided. This point further improved the stability of the clamper during movement in addition to the two upper and lower rails. Also, by rotating the screw shaft with a servo motor, it is possible to precisely control the movement speed and stop time of the clamper by the control unit.

Furthermore, if the side where the clamper's book is held is the front,
A linear movement unit using a ball screw is fixed to the right side of the center of the back of the clamper, and the triangular apex of the movable part of the clamper is biased to the left in plan view. Since the axis is offset to the left in plan view, in the space formed between the movable part and the main body, the right end space is configured wider than the left end space, and the force pulling the clamper is the direction of travel of the clamper in the forward path It is applied to the front part and on the return path, it is applied to the rear of the clamper in the traveling direction. This is a configuration that improves the stability of the clamper more in the forward path than in the return path, but in the forward path there are many configurations that exert a force on the collated book held by the clamper, such as a milling device and a glue application device. There is a possibility that a large force is applied in the milling device, but since only an empty clamper is transported on the return path, it is extremely reasonable to adopt the above configuration in which the clamper is more stable in the forward path. is there.

Furthermore, a guide portion having a guide roller for restricting the movement of the clamper in the front-rear direction and a guide roller for restricting the movement of the clamper in the up-down direction is provided at the upper portion of the clamper. Since the guide portion is provided with a guide roller for restricting movement to the load and a guide roller for receiving the load that is brought into contact with the lower rail, the movement of the clamper in the front-rear direction is guided at the upper portion of the clamper. Is rotated by abutting against the upper rail, and a guide roller pivoted at the lower portion of the clamper is abutted against the lower rail and rotates.

The movement of the clamper in the vertical direction is restricted by the guide roller pivoted at the upper part of the clamper rotating against the upper rail, and the guide roller pivoted at the lower part of the clamper rotating against the lower rail. Is done. Further, the load of the clamper is supported by the guide roller pivoted at the lower part of the clamper contacting the lower rail and rotating. Due to the action of these guide rollers, the movement of the clamper is regulated stably in both the forward and backward movements and the vertical movement.

The upper and lower rails each have a front plate, a rear plate, a concave portion, and a horizontal plane, and the guide rollers that restrict the movement of the upper portion of the clamper in the front-rear direction are such that the upper rail Is configured so that the clearance between the front rail and the rear plate of the upper rail is substantially equal.
The guide roller that restricts the movement of the lower part of the clamper in the front-rear direction is housed in the recess of the lower rail while the clamper is standing upright, and is configured so that the clearance between the front plate and the rear plate of the lower rail is substantially equal. Therefore, these guide rollers are not rotating when the clamper is transported in an upright state with no back-and-forth movement.

In addition, since it has a control unit that can control the clamper transport speed and stop time at the nipping mechanism, the clamper transport speed and stop time at the nipping mechanism can be adjusted freely according to the type of book to be bound. It is. This point is not only a problem of the control unit, but the point that the linear motion device using the ball screw capable of accurately reflecting the command from the control unit as described above is used as the transport mechanism. In other words, the control program itself applies the technical contents that have already been developed, but the complete effect could only be realized by adopting a transport mechanism that can execute the program accurately.

The nozzle application method in which the glue application mechanism sprays glue from the nozzle and applies it to the spine of the collation book. The transport speed of the clamper is selected in relation to the thickness of the collation book, that is, the thickness of the collation book When the thickness is thin, the clamper transport speed is set to be faster, and when the thickness of the collated book is thick, the clamper transport speed is set to be slower, so the amount of glue sprayed from the nozzle of the glue application mechanism is constant. Can be set to

Further, the adjustment of the nozzle width is performed by changing the effective width of the nozzle by sliding a sliding plate covering the nozzle of a certain width in the front-rear direction, so that the nozzle is sprayed from the nozzle of the glue applying mechanism. The amount of glue blowout can be set constant.

  The best mode for carrying out the present invention will be described below in detail with reference to the drawings.

<Configuration of Example 1>
As shown in FIG. 1, the bookbinding machine A according to the first embodiment of the present invention includes a clamper 1 that holds and moves the collated book b, a transport mechanism 2 that transports the clamper 1, and a spine of the collated book b. A milling mechanism M for cutting the end of bb, a glue application mechanism G for applying glue to the spine bb of the collation book b, and a cover (not shown) attached to the collation book b to attach the spine bb It consists of a nipping mechanism N for shaping and a control unit CT for controlling the movement of the clamper 1, etc. The transport mechanism 2, milling mechanism M, glue applying mechanism G, nipping mechanism N, and control unit CT are fixed to the frame F. ing. Reference numeral 3 denotes an upper rail for guiding the movement of the clamper 1, and reference numeral 4 denotes a lower rail for guiding the movement of the clamper 1. Both the upper rail 3 and the lower rail 4 are provided with both ends fixed to the frame F. ing. 5 is a guide plate for opening the clamper 1 at the start position (left end of the bookbinding machine A), and 6 is a pressing device for opening the clamper 1 at the end position (right end of the bookbinding machine A). Reference numeral 7 denotes a base for positioning the spine bb of the collation book b sandwiched between the clampers P, and the height of the base 7 can be adjusted by operating the handle h.

Ct of the milling mechanism M is a disc-shaped cutter, Nz of the glue application mechanism G is a nozzle for jetting glue upward, Se1 detects the right end of the spine bb of the collated book b, and sends the information to the controller CT. It is a sensor, and the control unit CT instructs the nozzle Nz on the timing of jetting the glue based on the information. Further, Se2 of the nipping mechanism N is a sensor that detects that the cover book with a cover attached b 'is released from the clamper 1 and falls downward, and information from the sensor Se2 is sent to the control unit CT. In response to the signal from the control unit CT, the rod 61 of the pressing device 6 is retracted to close the clamper 1 and start the backward movement (leftward movement) of the clamper 1. Note that Nt is the outlet of the booklet b ′ with cover. In FIG. 1, the cords that connect the mechanisms and the control unit, and the driving devices of the milling mechanism M and the nipping mechanism N are omitted.

First, the structure of the clamper 1 that sandwiches and transports the collated book b will be described in detail. 2 to 13 show details of the clamper 1. The clamper 1 has a substantially rectangular plate-like main body 11 having a short hypotenuse on the left and right sides of the upper end portion, and a substantially rectangular plate-like shape arranged at the lower front of the main body 11. The front plate 12 includes a movable portion 13 disposed on the back surface of the main body 11, and an elongated rectangular plate-shaped adjustment plate 14 is disposed on the front surface of the front plate 12. The clamper 1 is all made of metal except that the various rollers are made of an elastic body.

As shown in FIG. 2, the front surface of the main body 11 is a substantially smooth surface. However, as shown in FIGS. 4 and 13, the main body 11 has cylindrical convex portions 112a and 112b at the middle and lower part of the back surface. A plate-like convex portion 111 projects integrally with the main body 11, and a circular hole 113a is formed in the cylindrical convex portion 112a, and a circular hole 113b is formed in the cylindrical convex portion 112b. . A portion of the connecting shaft 134a, which will be described later, is slidably inserted into the circular hole 113a, and a portion of the connecting shaft 134b, which will be described later, is slidably inserted into the circular hole 113b. Yes.

Circular holes 114a, 114b, and 114c are formed in the plate-like convex portion 111. The circular holes 114a, 114b, and 114c are formed at equal intervals, but the circular hole 114b is formed slightly to the left rather than in the center of the plate-like convex portion 111 as shown in FIG. A cylinder 115a is fitted into the circular hole 114a, a cylinder 115b is fitted into the circular hole 114b, and a cylinder 115c is fitted into the circular hole 114c. Around the circular hole 114a, a step portion 111a in which the meat of the convex portion 111 bulges slightly backward is formed, and around the circular hole 114b, a step portion 111b in which the meat of the convex portion 111 bulges slightly backward is formed. Steps 111c are formed around the circular holes 114c, in which the meat of the convex portions 111 bulges slightly rearward.

Screw holes 116a, 116b, 116c are formed in the lower left portion of the main body 11, and a cylindrical rod 117 is screwed into any of the screw holes 116a, 116b, 116c. The rod 117 is shown screwed into the screw hole 116b in FIG. 2, but the rod 117 is a member used for positioning the left end of the collation book b (see FIG. 10). The screw hole to be screwed is appropriately changed depending on the size of the book b. Further, as shown in FIG. 3, shallow rectangular recesses 11 a to 11 m are cut on the back surface of the main body 11. The recesses 11 a to 11 m are recesses provided for reducing the weight of the clamper 1.

A guide portion 15 is provided at the upper left end of the back surface of the main body 11, a guide portion 16 is provided at the upper right end of the back surface, a guide portion 17 is provided at the lower left end of the rear surface, and a guide portion 18 is provided at the lower right end of the rear surface. As shown in FIGS. 3 and 6a, the guide portion 15 includes a plate-like support plate 15a that protrudes backward integrally with the main body 11, a columnar support shaft 15b that protrudes backward integrally with the main body 11, A guide roller 15c made of an elastic body pivoted on the upper surface of the rear end portion of the support plate 15a and rotated in the horizontal direction, and a guide roller 15d made of an elastic body pivoted on the back surface of the support shaft 15b and rotated in the vertical direction. It is composed of As shown in FIGS. 4 and 13, the rear portion of the support plate 15a is formed slightly thinner than the front portion, and a slight step portion d is formed at the boundary between the front portion and the rear portion.

As shown in FIGS. 3 and 6 b, the guide portion 16 includes a plate-like support plate 16 a that protrudes rearward integrally with the main body 11, a columnar support shaft 16 b that protrudes rearward integrally with the main body 11, A guide roller 16c made of an elastic body pivoted on the upper surface of the rear end of the support plate 16a and rotated in the horizontal direction, and a guide roller 16d made of an elastic body pivoted on the back surface of the support shaft 16b and rotated in the vertical direction. It is composed of As shown in FIGS. 4 and 13, the rear portion of the support plate 16a is formed slightly thinner than the front portion, and a slight step portion d is formed at the boundary between the front portion and the rear portion.

As shown in FIGS. 3 and 6 a, the guide portion 17 includes a flat plate-like support plate 17 a that protrudes rearward integrally with the main body 11, a columnar support shaft 17 b that protrudes rearward integrally with the main body 11, A guide roller 17c made of an elastic body pivoted on the lower surface of the rear end of the support plate 17a and rotated in the horizontal direction, and a guide roller 17d made of an elastic body pivoted on the back surface of the support shaft 17b and rotated in the vertical direction. It is composed of As shown in FIG. 13, a nut 17e is screwed on the upper surface of the rear end of the support plate 17a, and a screw hole 17f is cut on the upper surface of the nut 17e. Further, as shown in FIGS. 5 and 13, the rear portion of the support plate 17a is formed slightly thinner than the front portion, and a slight step portion d is formed at the boundary between the front portion and the rear portion.

As shown in FIGS. 3 and 6 b, the guide portion 18 includes a flat plate-like support plate 18 a that protrudes rearward integrally with the main body 11, a columnar support shaft 18 b that protrudes rearward integrally with the main body 11, A guide roller 18c made of an elastic body pivoted on the lower surface of the rear end of the support plate 18a and rotated in the horizontal direction, and a guide roller 18d made of an elastic body pivoted on the back surface of the support shaft 18b and rotated in the vertical direction. It is composed of As shown in FIG. 13, a nut 18e is screwed on the upper surface of the rear end of the support plate 18a, and a screw hole 18f is cut on the upper surface of the nut 18e. Further, as shown in FIGS. 5 and 13, the rear portion of the support plate 18a is formed to be slightly thinner than the front portion, and a slight step portion d is formed at the boundary between the front portion and the rear portion.

As shown in FIGS. 2, 6a, 6b, and 12, the front plate 12 is a rectangular plate whose height is slightly higher than one-third of the height of the main body 11, and the upper portion thereof is forward. As shown in FIG. 7, a circular hole 122 is formed at the left end of the convex portion 121, and a circular hole 123 is formed at the right end. A front portion of a connecting shaft 134a described later is inserted into the circular hole 122, and the front portion of the connecting shaft 134a is fixed in the circular hole 122 by a frictional force. Further, a front portion of a connecting shaft 134b described later is inserted into the circular hole 123, and the front portion of the connecting shaft 134b is fixed in the circular hole 123 by a frictional force. Therefore, the front plate 12 moves integrally with the connecting shafts 134a and 134b in a normal state, but when the force is applied, the connecting shafts 134a and 134b can be slid with respect to the front plate 12.

Furthermore, circular holes 12a, 12b and 12c for loosely inserting the rod 117 are formed in the lower left end of the front plate 12. Further, as shown in FIG. 12, screw holes 125 and 126 are cut in the upper surface 124 of the convex portion 121. In a normal state, the bolt 127 is screwed into the screw hole 125 and the bolt 128 is screwed into the screw hole 126. However, when the size of the collation book b is increased, the guide plate 129 is screwed using the bolts 127 and 128. Thereby, it can prevent that the upper part of the collation book b bends forward with dead weight.

The adjustment plate 14 is an elongated rectangular plate, and as shown in FIG. 7, a circular hole 141 is formed at the left end, and a circular hole 142 is formed at the right end. A front end portion of a connecting shaft 134a described later is slidably inserted into the circular hole 141, and a front end portion of a connecting shaft 134b described later is slidably inserted into the circular hole 142. Reference numerals 143 and 145 denote rings that are detachably mounted on the front portion of the connecting shaft 134a. Reference numerals 144 and 146 denote rings that are detachably mounted on the front portion of the connecting shaft 134a. The rings 143 to 146 are normally mounted between the convex portion 121 of the front plate 12 and the adjustment plate 14, but when the thickness of the collation book b (see FIG. 9) is increased, the rings 143 to 146 are temporarily removed, the front plate 12 is slid forward with respect to the connecting shafts 134 a and 134 b, and rings 143 to 146 are mounted between the back surface of the front plate 12 and the main body 11, and the convexity of the front plate 12 is The front surface of the part 121 is brought into contact with the back surface of the adjustment plate 14. As a result, the distance between the main body 11 and the front plate 12 can be increased.

As shown in FIG. 4, the main body 130 of the movable portion 13 has a substantially triangular plate shape in plan view, and the apex portion of the triangle is slightly leftward in plan view. A concave portion 130a having a substantially triangular shape in a plan view and a rectangular shape in a side view is formed in the rear portion of the main body 130. In this portion, as shown in FIGS. 3 and 13, the main body 130 has an upper plate 130b. And the lower plate 130c. As shown in FIGS. 3 and 6a, a convex portion 130f having a slight thickness is provided integrally with the upper plate 130b at the center of the lower surface of the upper plate 130b slightly to the left, and the portion at the center of the upper surface of the lower plate 130c is slightly to the left. A convex portion 130g having a slight thickness is provided integrally with the lower plate 130c, a pivot 131b is provided between the convex portion 130f and the convex portion 130g, and a roller 131a made of an elastic body is pivotally provided on the pivot 131b. ing.

As shown in FIG. 7, a concave portion 130d is provided at the left end of the main body 130, and a circular hole 132a is drilled from the front to the back of this portion of the main body 130. The circular hole 132a has a cylindrical connecting shaft 134a. The rear end portion is fitted and fixed. A concave portion 130e is provided at the right end of the main body 130, and a circular hole 132b is formed from the front to the back of this portion of the main body 130. The circular hole 132b has a rear end portion of a cylindrical connecting shaft 134b. It is fitted and fixed.

In addition, circular holes 133a, 133b, and 133c are formed at equal intervals in the center of the front portion of the main body 130 from the front to the back of the main body 130. The rear end portion of the columnar connecting shaft 135a is fitted and fixed, the rear end portion of the columnar connecting shaft 135b is fitted and fixed in the circular hole 133b, and the rear end portion of the columnar connecting shaft 135c is inserted in the circular hole 133c. Is inserted and fixed. Around the circular hole 133a is a step 130h in which the meat of the main body 130 bulges slightly forward, and around the circular hole 133b is a step 130i in which the meat of the main body 130 bulges slightly forward. Step portions 130j in which the meat of the main body 130 bulges slightly forward are formed around 133c. Note that p, p, and p are pins for fixing the connecting shafts 135a, 135b, and 135c.

The connecting shaft 134a is a cylindrical rod body whose front portion is configured to have a smaller diameter than the rear portion, and the rear end portion is inserted into the circular hole 132a formed in the left end of the main body 130 of the movable portion 13 as described above. As described above, the portion from the center and slightly forward is slidably inserted into the circular hole 113a formed in the convex portion 112a at the left end of the main body 11 as described above, and the front portion of the front plate 12 as described above. The front end portion is slidably inserted into the circular hole 141 formed in the left end of the adjustment plate 14 as described above.

A screw hole 134e is formed in the front surface of the connecting shaft 134a, and a screw hole 134c is formed in the back surface. A bolt nut 138a is screwed into the screw hole 134c via a washer w1, and a bolt nut 111d is screwed into the screw hole 134e via a washer w2. The connecting shaft 134a is thereby connected to the left end of the main body 130 of the movable portion 13. The left end of the front plate 12 and the left end of the adjustment plate 14 are integrally connected. On the other hand, the left end of the main body 11 is slidable in the front-rear direction with respect to the connecting shaft 134a.

The connecting shaft 134b is a cylindrical rod body having a front portion with a smaller diameter than the rear portion, and the rear end portion is inserted into the circular hole 132b formed in the right end of the main body 130 of the movable portion 13 as described above. As described above, the center and a part from the front are slidably inserted into the circular hole 113b formed in the convex portion 112b at the right end of the main body 11 as described above, and the front portion of the front plate 12 as described above. The front end portion is slidably inserted into the circular hole 142 formed in the right end of the adjustment plate 14 as described above.

A screw hole 134f is formed in the front surface of the connecting shaft 134b, and a screw hole 134d is formed in the back surface. A bolt nut 138b is screwed into the screw hole 134d through a washer w3, and a bolt nut 111e is screwed into the screw hole 134f through a washer w4, whereby the connecting shaft 134b is connected to the right end of the main body 130 of the movable portion 13. The right end of the front plate 12 and the right end of the adjustment plate 14 are integrally connected. On the other hand, the right end of the main body 11 is slidable in the front-rear direction with respect to the connecting shaft 134b.

The front end portion of the connecting shaft 135a is slidably inserted into the rear end portion of the cylinder 115a fixed to the circular hole 114a of the main body 11, and the front end portion of the connecting shaft 135b is a cylinder fixed to the circular hole 114b of the main body 11. The front end of the connecting shaft 135c is slidably inserted into the rear end of the cylinder 115c fixed to the circular hole 114c of the main body 11.

A coil spring 136a is wound around the exposed portion of the connecting shaft 134a. The rear end portion of the coil spring 136a is brought into contact with the left front surface of the main body 130 of the movable portion 13 via a washer w5, and the front end portion of the coil spring 136a is a washer. It is in contact with the back surface of the convex portion 112a at the left end of the main body 11 through w6. A coil spring 136b is wound around the exposed portion of the connecting shaft 134b, and a rear end portion of the coil spring 136b is brought into contact with a right end front surface of the main body 130 of the movable portion 13 through a washer w7, and a front end portion of the coil spring 136b. Is in contact with the back surface of the convex portion 112b at the right end of the main body 11 through a washer w8.

A coil spring 137a is wound around the exposed portions of the connecting shaft 135a and the cylinder 115a, the rear end portion of the coil spring 137a is in contact with the step portion 130h of the main body 130 of the movable portion 13, and the front end portion of the coil spring 137a is the washer w9. Is in contact with the stepped portion 111 a of the convex portion 111 of the main body 11. A coil spring 137b is wound around the exposed portions of the connecting shaft 135b and the cylinder 115b, the rear end portion of the coil spring 137b is in contact with the step portion 130i of the main body 130 of the movable portion 13, and the front end portion of the coil spring 137b is It is in contact with the stepped portion 111b of the convex portion 111 of the main body 11 through the washer w10. Further, a coil spring 137c is wound around the exposed portions of the connecting shaft 135c and the cylinder 115c, the rear end portion of the coil spring 137c is in contact with the step portion 130j of the main body 130 of the movable portion 13, and the front end portion of the coil spring 137c is It is in contact with the stepped portion 111c of the convex portion 111 of the main body 11 through the washer w11.

The details of the configuration of the clamper 1 are as described above. As is clear from the above configuration, the clamper 1 includes the movable portion 13, the front plate 12, and the adjustment plate 14 integrally assembled with the connecting shafts 134 a and 134 b, and the movable portion 13, the front plate 12, The adjustment plate 14 can be moved back and forth with respect to the main body 11. The state shown in FIGS. 2 to 7 shows the position where the movable part 13 is most retracted. When the movable part 13 is pressed forward, the front plate 12 and the adjustment plate 14 also move forward. At this time, the coil springs 136a, 136b, 137a, 137b, and 137c contract, and the movable portion 13, the front plate 12, and the adjustment plate 14 are urged rearward. As is apparent from FIGS. 4, 5, and 7, the triangular apex of the movable portion 13 is biased to the left in plan view, and the connecting shafts 135a, 135b, and 135c are to the left in plan view. Therefore, in the space formed between the movable portion 13 and the main body 11, the right end space SC2 is configured to be wider than the left end space SC1.

Next, details of the transport mechanism 2 that transports the clamper 1 will be described. As shown in FIG. 24 (rear view), the transport mechanism 2 is a linear motion device using a ball screw, and includes a screw shaft 21, a moving unit 22, a servo motor 23, and bearings 24, 25, and 26. 3 is an upper rail that guides the movement of the clamper 1 as described above, and 4 is a lower rail that also guides the movement of the clamper 1, and both the upper rail 3 and the lower rail 4 are fixed to the frame F at both ends. Has been handed over. 5 is a guide plate for opening the clamper 1 at the start position (the left end of the bookbinding machine A), that is, the movable portion 13 being pushed forward, and 6 is the end position of the clamper 1 (the right end of the bookbinding machine A). 7 is a pressing device for setting the open state and the closed state, and 7 is a base for positioning the spine bb of the book b to be clamped by the clamper P. The base 7 is raised by operating the handle h. The height can be adjusted.

Since a linear motion device using a ball screw is a known technique, a detailed description thereof will be omitted, but refer to Patent Documents 8 and 9 for its basic configuration. The linear motion device using the ball screw used in the bookbinding machine A according to the first embodiment also has substantially the same configuration, and when the screw shaft 21 rotates, the moving unit 22 attached to the screw shaft 21 becomes the screw shaft. 21 is linearly moved. If the rotation of the screw shaft 21 is reversed, the traveling direction of the moving unit 22 is also reversed.

As shown in FIG. 24, the screw shaft 21 is supported by bearings 24 and 25 at the left end of the bookbinding machine A, and the screw shaft 21 is supported by the bearing 26 at the left end of the bookbinding machine A. A servo motor 23 is attached to the left end of the screw shaft 21 and controls the rotation of the screw shaft 21. The servo motor 23 is connected to the control unit CT by a cable (not shown) and is controlled by the control unit CT. Reference numerals 2a, 2b, 2c, 2d, and 2e are support plates. The servo motor 23 and the bearing 24 are fixed to the frame F through the support plates 2a and 2c, and the bearing 25 is connected through the support plates 2b and 2c. The bearing 26 is fixed to the frame F through the support plates 2d and 2e.

Next, a connection configuration of the moving unit 22 and the clamper 1 will be described. As shown in FIGS. 7 and 13, in the guide portion 17 and the guide portion 18 projecting from the main body 11 of the clamper 1, a screw hole is formed on the upper surface of a nut 17e screwed to the upper surface of the rear end portion of the support plate 17a. 17f is cut, and a screw hole 18f is cut on the upper surface of the nut 18e screwed to the upper surface of the rear end portion of the support plate 18a. Using these screw holes 17f and 18f, the moving unit 22 is connected through the mounting portion 8 (see FIGS. 14 and 23).

As shown in FIG. 23, the mounting plate 81 has a rectangular plate shape, and has a screw hole 81a at the left end and a screw hole 81b at the right end. The mounting plate 82 is also a rectangular plate, a screw hole 82a is drilled at the left end, a screw hole 82b is drilled at the right end, and the lower end of the front of the rectangular plate mounting plate 83 is formed on the back of the mounting plate 82. Is welded. The mounting plates 81 and 82 are overlapped, a bolt 84 is screwed into the screw holes 81a and 82a, a bolt 85 is screwed into the screw holes 81b and 82b, and the bolt 84 is screwed into the screw hole 17f of the guide portion 17 of the clamper 1. Then, the bolts 85 are screwed into the screw holes 18f of the guide portion 18 of the clamper 1, respectively.

Furthermore, the moving unit 22 is attached to the mounting plate 83 using four screw holes 83a, 83b, 83c, 83d drilled in the right end of the mounting plate 83 in accordance with screw holes (not shown) of the moving unit 22. It sticks to. That is, the bolt 86a is screwed into the screw hole 83a, the bolt 86b is screwed into the screw hole 83b, the bolt 86c is screwed into the screw hole 83c, and the bolt 86d is screwed into the screw hole 83d. Thereby, the moving unit 22 is fixed to the back surface of the clamper 1 via the mounting plates 81, 82, 83. The state after assembly is shown in FIGS.

Next, the relationship between the upper rail 3, the lower rail 4, and the clamper 1 will be described. As shown in FIGS. 14 and 22, the upper rail 3 includes a front plate 31, a rear plate 32, and an upper plate 33, and the lower portion is open, and the front plate 31, the rear plate 32, and the upper plate are formed. A recess 34 is formed by 33. Further, the lower rail 4 has a shape in which the upper rail 3 is vertically symmetrical, and a front plate 41, a rear plate 42, and a lower plate 43 are integrally formed. The upper portion is open, and the front plate 41 and the rear plate 42 are formed. A recess 44 is formed by the lower plate 43.

As shown in FIGS. 1 and 24, the upper rail 3 and the lower rail 4 are fixed to the frame F at both ends, and are horizontally provided above the bookbinding machine A. The upper rail 3 and the lower rail 4 are maintained in a horizontal state by the three frame structures F1, F2, and F3, and the distance between the upper rail 3 and the lower rail 4 is maintained constant. It is supported.

In the frame structure F1, an upper frame F1a, a lower frame F1b, and a rear frame F1c are integrally formed, and an upper rail 3 is fixed to the upper frame F1a, and a lower rail 4 is fixed to the lower frame F1b. In the frame structure F2, an upper frame F2a, a lower frame F2b, and a rear frame F2c are integrally formed, and an upper rail 3 is fixed to the upper frame F2a, and a lower rail 4 is fixed to the lower frame F2b. In the frame structure F3, an upper frame F3a, a lower frame F3b, and a rear frame F3c are integrally formed, and an upper rail 3 is fixed to the upper frame F3a, and a lower rail 4 is fixed to the lower frame F3b.

As shown in FIGS. 24 and 25, the frame structure F1 is fixed to the frame body F via the support plate F1d, the frame structure F2 is fixed to the frame body F via the support plate F2d, and the frame structure F3 is the support plate. It is fixed to the frame F via F3d. Thereby, the upper rail 3 and the lower rail 4 are not only fixed to the frame body F at both ends, but also in the middle portion thereof via the frame structures F1, F2, F3 and the support plates F1d, F2d, F3d. It is fixed to the frame F. Therefore, the horizontal state and the mutual interval of the upper rail 3 and the lower rail 4 are held very accurately by the above configuration.

Next, the positional relationship between the upper rail 3 and the guide rollers 15c, 15d, 16c and 16d of the clamper 1 and the lower rail 4 and the guide rollers 17c, 17d, 18c and 18d of the clamper 1 is shown in detail in FIGS. Explained. First, regarding the positional relationship between the upper rail 3 and the upper left guide roller 15c of the clamper 1, as shown in FIG. 15a, when the clamper 1 is upright and is transported or stopped in a state of no back-and-forth movement, as shown in FIG. A slight clearance C <b> 1 is generated between the front surface of the roller 15 c and the front plate 31 of the upper rail 3. A slight clearance C2 is also generated between the back surface of the guide roller 15c and the rear plate 32 of the upper rail 3. The clearance C1 and the clearance C2 are configured to be substantially equal. In this case, naturally, the guide roller 15c does not rotate.

The allowable range of the total value of the clearance C1 and the clearance C2 is 10 μm to 30 μm. Therefore, for example, when the clamper 1 is pushed rearward, the clearance C2 becomes 0, and the guide roller 15c contacts the rear plate 32 of the upper rail 3 and rotates by frictional force. At this time, the clearance C1 has a value of 10 μm to 30 μm. On the other hand, when the clamper 1 is pushed forward, the clearance C1 becomes 0, and the guide roller 15c contacts the front plate 31 of the upper rail 3 and rotates by frictional force. At this time, the clearance C2 has a value of 10 μm to 30 μm.

That is, conversely, even when a force for moving the clamper 1 back and forth is applied, in the upper left part of the clamper 1, the forward and backward movement of the clamper 1 can be suppressed within the range of 10 μm to 30 μm. . The numerical limitation of 10 μm to 30 μm is set from the limit of the manufacturing accuracy of the clamper 1, the transport mechanism 2, the upper rail 3, and the lower rail 4. In other words, the total value of the clearance C1 and the clearance C2 is desirably as small as possible because it can suppress unnecessary movement of the clamper 1. However, from the viewpoint of manufacturing accuracy, the above numerical range is considered to be a limit in the current manufacturing technology. In particular, if the minimum value of 10 μm is set to a value lower than this at the time of manufacture, the guide roller 15c may contact the front plate 31 and the rear plate 32 of the upper rail 3 substantially at the same time, and the guide roller 15c and the upper rail. 3 friction may increase.

Next, with respect to the positional relationship between the upper rail 3 and the clamper 1 in the upper left guide roller 15d, as shown in FIG. 15a, when the clamper 1 is upright and is transported or stopped without vertical movement. The clearance C3 between the upper end of the guide roller 15d and the lower surface 31a (horizontal plane) of the front plate 31 of the upper rail 3 is set within 0 to 5 μm. Although this clearance C3 is desirably 0 originally, it cannot be exactly 0 from the viewpoint of manufacturing accuracy, so an upper limit of 5 μm is provided even at the maximum value. If this value falls below 0, the lower guide rollers 17d and 18d of the clamper 1 are load receiving guide rollers, as will be described later, and abut against the upper surface 41a (horizontal plane) of the front plate 41 of the lower rail 4. In this state, the frictional force acting on the guide roller 15d is increased, which may affect the smooth conveyance of the clamper 1.

Next, with respect to the positional relationship between the upper rail 3 and the upper right guide roller 16c of the clamper 1, when the clamper 1 is transported or stopped without standing back and forth, as shown in FIG. A slight clearance C4 is generated between the front surface of the guide roller 16c and the front plate 31 of the upper rail 3. A slight clearance C5 is also generated between the back surface of the guide roller 16c and the rear plate 32 of the upper rail 3. The clearance C4 and the clearance C5 are configured to be substantially equal. Also in this case, naturally the guide roller 16c is not rotating.

The allowable range of the total value of the clearance C4 and the clearance C5 is 10 μm to 30 μm, and the details are the same as the case of the total value of the clearance C1 and the clearance C2. Therefore, even when a force for moving the clamper 1 back and forth is applied, the clamper 1 is prevented from moving back and forth in the range of 10 μm to 30 μm in the upper right portion of the clamper 1 depending on the above.

Next, regarding the positional relationship between the upper rail 3 and the guide roller 16d of the clamper 1, when the clamper 1 is upright and is transported or stopped without vertical movement, as shown in FIG. 15b, the guide roller The clearance C6 between the upper end of 16d and the lower surface 31a (horizontal plane) of the front plate 31 of the upper rail 3 is set to be within 0 to 5 μm. The details regarding this numerical range are the same as the clearance C3 of the guide roller 15d.

Next, with regard to the positional relationship between the lower rail 4 and the lower left guide roller 17c of the clamper 1, when the clamper 1 is transported or stopped without standing back and forth, as shown in FIG. A slight clearance C7 is generated between the front surface of the guide roller 17c and the front plate 41 of the lower rail 4. A slight clearance C8 is also generated between the back surface of the guide roller 17c and the rear plate 42 of the lower rail 4. The clearance C7 and the clearance C8 are configured to be substantially equal. Also in this case, the guide roller 17c does not rotate.

The allowable range of the total value of the clearance C7 and the clearance C8 is 10 μm to 30 μm. The details are the same as the case of the total value of the clearance C1 and the clearance C2. Therefore, even when a force for moving the clamper 1 back and forth is applied, in the lower left part of the clamper 1, the forward and backward movement of the clamper 1 is suppressed within the range of 10 μm to 30 μm.

Next, regarding the positional relationship between the lower rail 4 and the guide roller 17d of the clamper 1, when the clamper 1 is upright and is transported or stopped without vertical movement, as shown in FIG. 16a, the guide roller The clearance C9 between the lower end of 17d and the upper surface 41a (horizontal plane) of the front plate 41 of the lower rail 4 is 0, that is, a contact state. The guide roller 17d is in a rotating state under the load of the clamper 1.

Next, with regard to the positional relationship between the lower rail 4 and the lower right guide roller 18c of the clamper 1, when the clamper 1 is transported or stopped in an upright state with no back-and-forth movement, as shown in FIG. A slight clearance C10 is generated between the front surface of the guide roller 18c and the front plate 41 of the lower rail 4. A slight clearance C11 is also generated between the back surface of the guide roller 18c and the rear plate 42 of the lower rail 4. The clearance C10 and the clearance C11 are configured to be substantially equal. Also in this case, the guide roller 18c does not rotate.

The allowable range of the total value of the clearance C10 and the clearance C11 is 10 μm to 30 μm. The details are the same as the case of the total value of the clearance C1 and the clearance C2. Therefore, even when a force for moving the clamper 1 back and forth is applied, in the lower right part of the clamper 1, the back and forth movement of the clamper 1 is suppressed within the range of 10 μm to 30 μm depending on the above.

Next, regarding the positional relationship between the lower rail 4 and the guide roller 18d of the clamper 1, when the clamper 1 is upright and is transported or stopped without vertical movement, as shown in FIG. 16b, the guide roller The clearance C12 between the lower end of 18d and the upper surface 41a (horizontal plane) of the front plate 41 of the lower rail 4 is 0, that is, a contact state. The guide roller 18d is in a rotating state under the load of the clamper 1.

Next, the configuration of the guide plate 5 will be described. As shown in FIGS. 1 and 24 to 26, the guide plate 5 is located near the left end of the bookbinding machine A of the first embodiment, and when the clamper 1 is at the left end (starting position) of the bookbinding machine A, the guide plate 5 The left end 51a of the front surface 51 of the plate 5 is in contact with the roller 131a at the rear end of the movable portion 13 of the clamper 1 (see FIG. 10), and presses the movable portion 13. As shown in FIGS. 1 and 24 to 26, the guide plate 5 is fixed to the frame body F via support plates 5 a and 5 b.

As shown in FIG. 10, the guide plate 5 has a plate shape in which the left end 51a of the front 51 protrudes forward and the right end 51b retreats backward in plan view, and the front 51 draws a gentle curve from the left end 51a to the right end 51b. ing. Further, the thickness thereof is equal to the thickness of the roller 131a of the movable portion 13 of the clamper 1.

FIG. 10 shows a state in which the clamper 1 is at the left end (start position) of the bookbinding machine A, and the roller 131a of the movable portion 13 of the clamper 1 is pressed by the left end 51a of the front surface 51 of the guide plate 5 and moved forward by a distance D1. Only moved. As a result, a gap SC3 having a distance D1 is also generated between the main body 11 of the clamper 1 and the front plate 12.

Next, the configuration of the pressing device 6 will be described. As shown in FIGS. 1 and 24 to 26, the pressing device 6 is located near the right end of the bookbinding machine A of the first embodiment, and when the clamper 1 is at the right end (end position) of the bookbinding machine A, The front surface of the rod 61 of the device 6 is in contact with the roller 131a at the rear end of the movable portion 13 of the clamper 1. The pressing device 6 has a configuration in which a rod 61 is moved in the front-rear direction by an internal motor (not shown), and this rod 61 moves the roller 131a of the movable portion 13 of the clamper 1 in the front-rear direction. The movement of the rod 61 is controlled. Dominated by Department CT. As shown in FIGS. 1 and 24 to 26, the pressing device 6 is fixed to the frame body F via a support plate 6 a.

<Operation of Example 1>
The operation of the bookbinding machine A according to the first embodiment will be described in detail with reference to the drawings. First, in the start state, the clamper 1 is positioned at the left end of the bookbinding machine A. In this state, the roller 131a of the movable portion 13 of the clamper 1 is placed on the front surface 51 of the guide plate 5 as shown in FIG. It is pressed forward by the left end 51a. That is, the coil springs 136a, 136b, 137a, 137b, and 137c are in a contracted state, and the front plate 12 and the preparation plate 14 integrated with the movable portion 13 are projected forward by the connecting shafts 134a and 134b. A gap SC3 having a distance D1 is formed between the front surface and the back surface of the front plate 12.

In this state, an operator (not shown) sets the collation book b in the gap SC3 with the spine bb (see FIG. 1) facing down. At this time, setting is performed so that the rod 117 screwed and fixed to the lower left front of the main body 11 of the clamper 1 comes into contact with the left end of the collated book b. That is, the rod 117 plays the role of determining the left end position of the collated book b. Further, the spine bb of the collation book b comes into contact with the upper surface of the base 7, and thereby the height (position in the vertical direction) of the collation book b is determined. Since the upper surface of the base 7 determines the basic height in all subsequent work processes, the handle h is operated to carefully position the base 7 (height adjustment of the base 7). As a result, the spine bb of the collation book b is positioned in a state where it projects slightly downward from the lower ends of the main body 11 and the front plate 12 of the clamper 1.

When the collation book b has been set, the worker presses the start switch SW (see FIG. 1) of the control unit CT. Of course, before that, various settings such as the conveying speed of the clamper 1 have been made by the control unit CT. When the start switch SW is pressed, the servo motor 23 of the transport mechanism 2 starts to rotate, and the moving unit 22 starts to move rightward due to the rotation of the screw shaft 21. Since the clamper 1 is fixed to the moving unit 22 on the back surface, the clamper 1 also moves to the right.

At this time, as shown in FIG. 10, the roller 131a of the movable portion 13 of the clamper 1 rotates counterclockwise in plan view along the curved surface of the front surface 51 of the guide plate 5, and simultaneously the movable portion 13 moves backward. That is, since the coil springs 136a, 136b, 137a, 137b, and 137c urge the movable portion 13 backward, the movable portion 13 moves backward while the roller 131a is always pressed against the curved surface of the front surface 51 of the guide plate 5. To do.

At this time, if there is nothing in the gap SC3 between the main body 11 and the front plate 12, the movable portion 13 moves backward to the position where the roller 131a contacts the right end 51b of the front surface 51 of the guide plate 5, that is, by the distance D1. At this position, the front surface of the main body 11 and the back surface of the front plate 12 come into contact with each other, and the retreat of the movable portion 13 is stopped here. However, when the collated book b is set in the gap SC3, the backward movement of the movable portion 13 is stopped when the back surface of the front plate 12 comes into contact with the front face of the collated book b. In other words, if the thickness of the collated book b is D2, the backward movement of the movable portion 13 is stopped when the distance D3 is obtained by subtracting the thickness D2 from the distance D1. However, at this time, the coil springs 136a, 136b, 137a, 137b, and 137c are still urging the movable portion 13, the front plate 12, and the adjusting plate 14 backward, so that the collated book b is removed from the back surface of the front plate 12. A force pressing backward acts, and the collated book b is held in the gap SC3 between the main body 11 of the clamper 1 and the front plate 12 by this force.

At this time, if the thickness D2 of the collation book b is larger than the distance D1 of the gap SC3, the ring that is provided between the convex portion 121 of the front plate 12 and the adjustment plate 14 as described above. 143 to 146 are once removed, the front plate 12 is moved forward to contact the adjustment plate 14, and the rings 143 to 146 are mounted between the main body 11 and the front plate 12. As a result, the distance D1 of the gap SC3 is enlarged, so that the case where the thickness D2 of the collation book b is thick can be accommodated. Further, when the height of the collation book b is high, this also corresponds to the case where the guide plate 129 is screwed into the screw holes 125 and 126 of the upper surface 124 of the convex portion 121 as described above (see FIG. 12).

The state in which the clamper 1 is holding the collated book b is shown in FIGS. At this time, the distance D4 between the front surface of the main body 11 of the clamper 1 and the back surface of the front plate 12 coincides with the thickness D2 of the collated book b. Further, the movable portion 13 of the clamper 1 is pressed forward by this distance D4 (= D2). In this state, the clamper 1 is conveyed rightward, leaves the base 7 and reaches the milling mechanism M (see FIG. 1).

In the milling mechanism M, the rotating disc-shaped cutter Ct cuts the end of the spine bb of the collation book b. The height of the cut portion is a distance D5 from the horizontal plane passing through the upper surface of the base 7 to the cutter Ct, as shown in FIG. This distance D5 is adjusted by adjusting the height of the base 7 as described above.

Next, the clamper 1 reaches the glue application mechanism G (see FIG. 1). Since the glue applying mechanism G is a nozzle jetting type glue applying apparatus that jets glue from the nozzle Nz and applies glue to the spine bb of the collated book b, the glue inside the apparatus is sprayed from the nozzle Nz. Does not come into contact with air at all, and is an optimal device for handling PUR hot melt. Such a nozzle jet type glue applicator is known and widely used in European bookbinding machines. In Japan, it is also used in bookbinding machines, but is often used in canning processes. Patent Document 10 gives an example of a nozzle spray type glue applying device.

As described above, the feature of such a nozzle jet type glue applicator is that the glue does not touch the air until it is jetted, as well as the control unit CT compared to the roller type glue applicator. Since the adhesive application length and thickness can be easily controlled, an optimum adhesive application mechanism G can be configured in an apparatus such as the bookbinding machine A of Example 1 that performs bookbinding of different types by a small number of copies. It is. The pipe Ga extending from the glue application mechanism G is a flexible hose that allows liquid glue to flow into the glue application mechanism G from a glue melting device (not shown) (not shown), and the pipe Gb is an extra from the glue application mechanism G. It is a flexible hose that recirculates the glue to a glue melting device (not shown) (not shown).

When the lower right portion of the collation book b sandwiched by the clamper 1 is detected by the sensor Se1 of the glue application mechanism G, glue is jetted from the nozzle Nz in response to a command from the control unit CT, and the spine of the collation book b Glue is applied to the part bb. When passing through the glue application mechanism G, the clamper 1 is at a constant speed, and the length of the spine bb of the collation book b is also stored in the control unit CT in advance, so that the nozzle Nz is the spine of the collation book b. When the right end of bb comes directly above the nozzle Nz, the spraying of glue starts, and when the left end of the spine bb of the collation book b comes directly above the nozzle Nz, the spraying of glue is stopped. Since the amount of paste sprayed from the nozzle Nz is constant, the paste is uniformly applied to the spine bb of the collated book b. The thickness of the paste application layer can be arbitrarily set by the control unit CT. At this time, since it is difficult to precisely control the amount of paste sprayed from the nozzle Nz, the thickness of the paste coating layer is adjusted by controlling the transport speed of the clamper 1 that can be precisely controlled.

When the clamper 1 passes over the glue application mechanism G and glue is applied to the spine bb of the collated book b, the clamper 1 then moves to the nipping mechanism N located at the right end of the bookbinding machine A, where Stop. That is, the clamper 1 is programmed in advance to stop when traveling a certain distance, and the clamper 1 stops when the servo motor 23 stops. Note that a so-called horizontal glue device (not shown), that is, a device for applying glue to the front lower end and the rear lower end of the collated book b may be provided between the glue applying mechanism G and the nipping mechanism N. In the bookbinding machine A in FIG. 1, the wide opening between the milling mechanism M and the nipping mechanism N is a consideration for making it possible to attach the side glue device appropriately. However, since only the basic configuration is described in the bookbinding machine A of the first embodiment, the side glue device is shown in the omitted state.

When the clamper 1 is stopped by the nipping mechanism N, the nipping mechanism N attaches a cover (not shown) to the collated book in a state where the clamper 1 holds the collated book b, and shapes it. As a result, the collation book b becomes a collation book b ′ with a cover attached. Since this shaping stage requires a certain amount of time, the clamper 1 is in a stopped state during that time. When the sticking and shaping of the cover are completed, the signal is sent to the control unit CT, and a signal for moving the motor of the pressing device 6 is sent from the control unit CT to the pressing device 6 to advance the rod 61 of the pressing device 6. .

The position of the front surface of the rod 61 of the pressing device 6 is adjusted so that it is slightly separated from the roller 131a of the movable portion 13 of the clamper 1 during operation of the nipping mechanism N. However, as the rod 61 moves forward, the rod 61 abuts on the roller 131a of the movable portion 13 and further presses it. Accordingly, the movable portion 13 is pressed forward, and the distance D1 of the gap SC3 (see FIG. 10) between the main body 11 of the clamper 1 and the front plate 12 is increased. As a result, the nipping state of the front cover booklet b ′ is released, and the front cover booklet b ′ is released and falls downward. The cover book collated book b ′ dropped downward is taken out of the bookbinding machine A from the outlet Nt. However, since the method for taking out the booklet b ′ with cover is a known technique and various methods are disclosed, it is needless to say that the method is not limited to the above method.

When the booklet b 'with cover is dropped, it passes through the sensor Se2. This signal is sent to the control unit CT, and a signal for moving the rod 61 back to the pressing device 6 is sent from the control unit CT. As a result, the rod 61 moves backward, and the movable portion 13 of the clamper 1 pressed forward by the rod 61 also moves backward. The backward movement of the movable portion 13 is stopped when the front surface of the main body 11 and the back surface of the front plate 12 come into contact with each other. That is, it is stopped when the clamper 1 is completely closed. However, since the rod 61 is further retracted and stopped, the contact state between the rod 61 and the roller 131a of the movable portion 13 of the clamper 1 is released.

When the rod 61 is completely retracted and stopped, the signal is sent to the control unit CT, and a signal to reverse the screw shaft 21 is sent from the control unit CT to the servo motor 23. Thereby, the moving unit 22 starts moving leftward, and the clamper 1 fixed to the moving unit 22 also starts moving leftward. The clamper 1 moves to the left at a constant speed and stops when it reaches the left end (starting end position) of the bookbinding machine A. That is, since the clamper 1 is programmed to stop when it moves a certain distance, it stops when it reaches the left end (starting end position) of the bookbinding machine A. This completes one cycle and the bookbinding machine A returns to its original state.

At this time, at the left end (starting end position) of the bookbinding machine A, the roller 131a of the movable portion 13 of the clamper 1 is pressed by the left end 51a of the front surface 51 of the guide plate 5 as shown in FIG. Therefore, the movable portion 13, the front plate 12, and the adjustment plate 14 of the clamper 1 move forward, and a gap SC 3 having a distance D 1 is opened between the main body 11 and the front plate 12. When a new collation book b is set here and the start switch SW (see FIG. 1) is pressed, a new cycle is started.

The transport mechanism 2 of the clamper 1 is a linear motion device using a ball screw, and the screw shaft 21 is directly rotated by the servo motor 23. Therefore, the movement of the clamper 1 is performed like a transport mechanism CV2 using a chain (see FIG. 28), for example. The clamper 1 moves very stably without causing unevenness in speed or applying extra force to the clamper 1 other than in the horizontal direction, whereby the end of the spine bb of the collation book b in the milling mechanism M is achieved. The part is also cut off completely horizontally, and the thickness of the glue coating layer in the glue applicator G is constant.

However, there is a case where a force other than the horizontal direction is applied to the clamper 1 for some reason. Especially when the clamper 1 passes through the milling mechanism M, the lower end portion of the spine bb of the collation book b is cut by the cutter Ct. Therefore, there is room for extra force other than the horizontal direction to work. At this time, holding the posture of the clamper 1 and guiding the end of the spine bb of the collation book b so as to be completely horizontally cut off are the upper rail 3, the lower rail 4, and the clamper 1. It becomes an effect | action of the guide parts 15, 16, 17, and 18.

For example, as shown in FIG. 17, when considering a case where a force FC1 for tilting the clamper 1 forward is applied, the force FC1 is a portion where the load of the clamper 1 is received by the lower rail 4, that is, The guide roller 17d of the guide portion 17 and the guide roller 18d of the guide portion 18 are tilted forward with the position (front end portion of the upper surface 41a) where the guide roller 18d of the lower rail 4 is in contact with the upper surface 41a of the lower rail 4 as a fulcrum FL1.

At this time, in the guide portions 15 and 16, the clearance C1 of the guide roller 15c and the clearance C4 of the guide roller 16c are zero. That is, the front surfaces of the guide rollers 15c and 16c abut on the front plate 31 of the upper rail 3, and the guide rollers 15c and 16c rotate clockwise in plan view. On the contrary, the clearance C2 of the guide roller 15c and the clearance C5 of the guide roller 16c are enlarged. The clearance C3 of the guide roller 15d and the clearance C6 of the guide roller 16d are hardly different from the state in which the clamper 1 is conveyed upright.

However, in the guide portions 17 and 18, the clearance C7 of the guide roller 17c, the clearance C10 of the guide roller 18c, the clearance C8 of the guide roller 17c, and the clearance C11 of the guide roller 18c are in a state where the clamper 1 is conveyed upright. The guide rollers 17c and 18c do not rotate. Further, the clearance C9 of the guide roller 17d and the clearance C12 of the guide roller 18d are in contact with the upper surface 41a of the front plate 41 of the lower rail 4, that is, 0, and the guide rollers 17d and 18d are clockwise when viewed from the front. Continue to rotate.

Accordingly, the clamper 1 is tilted forward by mainly rotating the guide rollers 15c and 16c with the front surfaces of the guide rollers 15c and 16c coming into contact with the front plate 31 of the upper rail 3, so that the upper portion of the clamper 1 is rotated by a small angle α. It stops when it tilts. At this time, the clearance C2 of the guide roller 15c and the clearance C5 of the guide roller 16c are the maximum values of 10 μm to 30 μm. Therefore, when the clearances C1 and C4 are initially equal to the clearances C2 and C5, the movement of the upper portion of the clamper 1 is stopped when it moves forward by approximately half of 10 μm to 30 μm. This means that approximately half or more of 10 μm to 30 μm cannot move forward, but this numerical value is a slight value equivalent to hardly changing the position of the collation book b. Therefore, even if the force FC1 that causes the clamper 1 to tilt forward is exerted, the influence is only negligible in the spine cutting work and the glue application work in the milling mechanism M and the glue application mechanism G.

Next, as seen in FIG. 18, when a force FC2 that tilts the clamper 1 backward is considered, the force FC2 is a portion where the load of the clamper 1 is received by the lower rail 4. That is, the position where the guide roller 17d of the guide portion 17 and the guide roller 18d of the guide portion 18 are in contact with the upper surface 41a of the front plate 41 of the lower rail 4 (the rear end portion of the upper surface 41a) is used as a fulcrum FL2 to the rear. It is thought to tilt.

At this time, in the guide portions 15 and 16, the clearance C2 of the guide roller 15c and the clearance C5 of the guide roller 16c are zero. That is, the back surfaces of the guide rollers 15c and 16c abut against the rear plate 32 of the upper rail 3, and the guide rollers 15c and 16c rotate counterclockwise in plan view. On the contrary, the clearance C1 of the guide roller 15c and the clearance C4 of the guide roller 16c are enlarged. The clearance C3 of the guide roller 15d and the clearance C6 of the guide roller 16d are hardly different from the state in which the clamper 1 is conveyed upright.

However, in the guide portions 17 and 18, the clearance C7 of the guide roller 17c, the clearance C10 of the guide roller 18c, the clearance C8 of the guide roller 17c, and the clearance C11 of the guide roller 18c are in a state where the clamper 1 is conveyed upright. The guide rollers 17c and 18c do not rotate. Further, the clearance C9 of the guide roller 17d and the clearance C12 of the guide roller 18d remain 0, and the guide rollers 17d and 18d are in clockwise contact with the upper surface 41a of the front plate 41 of the lower rail 4 when viewed from the front. Continue to rotate.

Therefore, the rearward tilt of the clamper 1 is mainly caused by rotating the guide rollers 15c and 16c with the back surfaces of the guide rollers 15c and 16c abutting against the rear plate 32 of the upper rail 3 so that the upper portion of the clamper 1 is moved by a small angle β. It stops when it tilts. At this time, the clearance C1 of the guide roller 15c and the clearance C4 of the guide roller 16c are the maximum values of 10 μm to 30 μm. Therefore, if the clearances C1 and C4 are initially equal to the clearances C2 and C5, the movement of the upper part of the clamper 1 is stopped when the upper part of the clamper 1 moves backward by approximately half of 10 μm to 30 μm. This means that approximately half or more of 10 μm to 30 μm cannot move backward, but this numerical value is a slight value equivalent to almost no change in the position of the book b as in the case of the forward tilt. Therefore, even if the force FC2 that tilts the clamper 1 backward is exerted, the influence is only negligible in the spine cutting work and the glue application work in the milling mechanism M and the glue application mechanism G.

Next, FIGS. 19a and 19b show a state in which a force FC3 that horizontally moves the clamper 1 forward is applied. At this time, in the guide portions 15 and 16, the clearance C1 of the guide roller 15c and the clearance C4 of the guide roller 16c are zero. That is, the front surfaces of the guide rollers 15c and 16c abut on the front plate 31 of the upper rail 3, and the guide rollers 15c and 16c rotate clockwise in plan view. On the contrary, the clearance C2 of the guide roller 15c and the clearance C5 of the guide roller 16c are enlarged. The clearance C3 of the guide roller 15d and the clearance C6 of the guide roller 16d are not different from the state in which the force FC3 is not applied to the clamper 1 and is conveyed.

In the guide portions 17 and 18, the clearance C7 of the guide roller 17c and the clearance C10 of the guide roller 18c are zero. That is, the front surfaces of the guide rollers 17c and 18c abut on the front plate 41 of the lower rail 4, and the guide rollers 17c and 18c rotate clockwise in plan view. On the contrary, the clearance C8 of the guide roller 17c and the clearance C11 of the guide roller 18c are enlarged. It should be noted that the clearance C9 of the guide roller 17d and the clearance C12 of the guide roller 18d remain 0, and there is no difference from the state where the clamper 1 is transported without the force FC3.

Accordingly, the forward movement of the clamper 1 is stopped when the clamper 1 is moved by a minute distance Δ1, which is 10 μm which is the maximum value of the clearances C2 and C5 or the clearances C8 and C11. It is a half value of ˜30 μm. Therefore, even if the force FC3 that moves the clamper 1 forward acts, the influence is negligible in the spine cutting work and the glue application work in the milling mechanism M and the glue application mechanism G. X1 is the center line of the guide rollers 15c and 16c, X2 is the center line of the upper rail 3, X3 is the center line of the guide rollers 17c and 18c, and X4 is the center line of the lower rail 4.

Next, FIGS. 19c and 19d show a state in which a force FC4 that horizontally moves the clamper 1 rearward is applied. In this case as well, the movement of the clamper 1 to the rear is restricted by the minute distance Δ2 as in the case where the force FC3 for horizontally moving forward is applied. That is, it is regulated by a half value of 10 μm to 30 μm which is the maximum value of the clearances C2 and C5 or the clearances C8 and C11. Therefore, even if the force FC4 that moves the clamper 1 backward is applied, the influence is still negligible in the spine cutting work and the glue application work in the milling mechanism M and the glue application mechanism G.

Similarly, as shown in FIGS. 20a and 20b, even when a force FC5 that vertically moves the clamper 1 is applied, the guide rollers 15d and 16d abut against the lower surface 31a of the front plate 31 of the upper rail 3. When the clearances C3 and C6 become 0, the upward movement of the clamper 1 is stopped. Therefore, the upward movement of the clamper 1 (a minute distance Δ3) is caused by the clearance C9 of the roller 17d and the clearance C12 of the roller 18d. It is regulated by the maximum value of 5 μm. Therefore, the influence is still negligible in the spine cutting work and the glue application work in the milling mechanism M and the glue application mechanism G.

Further, as shown in FIGS. 20c and 20d, the guide rollers 15c, 16c, 17c, and 18c move forward (a minute distance) even when a force FC6 that causes the clamper 1 to move obliquely upward and forward is applied. Δ4) is regulated by a half value of 10 μm to 30 μm which is the maximum value of the clearances C2, C5 or the clearances C8, C11, and the upward movement of the guide rollers 15d, 16d, 17d, 18d (a minute distance Δ5) is the clearance C9. , And is regulated by 5 μm which is the maximum value of C12. Therefore, the influence is still negligible in the spine cutting work and the glue application work in the milling mechanism M and the glue application mechanism G.

Thus, whatever force other than the traveling direction is applied to the clamper 1, the movement in the front-rear direction is restricted within the range of 10 μm to 30 μm, and the movement in the vertical direction is restricted within the range of 5 μm. Therefore, the clamper 1 can move very stably, and the spine cutting work and the glue application work in the milling mechanism M and the glue application mechanism G can be performed very stably.

FIG. 27a shows the relationship between the transport speed V of the clamper 1 and time t. At speed V1, t1 is the time until the clamper 1 reaches the constant speed V1 from the stopped state at the left end of the bookbinding machine A, and t2 is the time until the clamper 1 stops from the constant speed V1 at the right end of the bookbinding machine A. Each shows. The speed V2 is two-thirds of the speed V1, but even at the speed V2, the time required for the clamper 1 to reach the constant speed V2 from the stop state at the left end of the bookbinding machine A is also t1. Further, the time t3 required to stop from the constant speed V2 at the right end of the bookbinding machine A is equal to the time t2 at the speed V1. The speed V3 is a half of the speed V1, but even at the speed V3, the time required for the clamper 1 to reach the constant speed V3 from the stopped state at the left end of the bookbinding machine A is also t1. Further, the time t4 required to stop from the constant speed V3 at the right end of the bookbinding machine A is equal to the time t2 at the speed V1. The transport speed V of the clamper 1 can be arbitrarily selected within a certain range, but the movement start portion and stop portion of the clamper 1 are programmed as described above.

The conveying speed V of the clamper 1 is selected mainly in relation to the thickness of the collation book b. This is because the amount of paste sprayed from the nozzle Nz of the glue application mechanism G is normally set to be constant, but the width of the nozzle Nz is increased accordingly when the thickness of the collation book b is increased. When the amount of paste blown is constant and the width of the nozzle Nz is increased, the coating thickness naturally becomes thinner. Therefore, in order to keep the coating thickness constant, the conveying speed of the clamper must be reduced. Therefore, when the thickness of the collated book b is thin, the clamper transport speed V is set to be faster, and when the thickness of the collated book b is thick, the clamper transport speed V is set to be slower. The width of the nozzle Nz is adjusted by the method shown in FIG. 27b in the first embodiment. That is, the sliding plate Na that covers the front portion of the nozzle Nz having a constant width is provided, and the sliding plate Na is slid in the front-rear direction z to change the effective width D6 of the nozzle Nz.

  As described above, the present invention is characterized in that a PUR hot melt can be used in a bookbinding machine specialized for small-volume bookbinding. In the future, the demand for bookbinding with a smaller number of copies will increase, and the glue for bookbinding will change from the conventional EVA hot melt to the PUR hot melt. It is conceivable that the demand for small-sized bookbinding machines with features will be sufficiently developed not only in Japan but also overseas. The present invention discloses the technical contents that are the key to such a bookbinding machine, and is convinced that it can make a great contribution in the future bookbinding industry.

It is a front view of the bookbinding machine of Example 1 of the present invention. It is a front view of the clamper of the bookbinding machine of Example 1 of the present invention. It is a rear view of the clamper of the bookbinding machine of Example 1 of the present invention. It is a top view of the clamper of the bookbinding machine of Example 1 of the present invention. It is a bottom view of the clamper of the bookbinding machine of Example 1 of the present invention. (A) It is a left view of the clamper of the bookbinding machine of Example 1 of the present invention. (B) It is a right view of the clamper of the bookbinding machine of Example 1 of the present invention. It is the sectional view on the AA line of FIG. 6a. It is a left view which shows the state which the clamper of the bookbinding machine of Example 1 of this invention clamped the collation book. It is the BB sectional drawing of FIG. It is a top view which shows a relationship with a guide plate, when the clamper of the bookbinding machine of Example 1 of this invention exists in a starting end position (collation book supply position). It is a top view which shows the relationship with a guide plate, when the clamper of the bookbinding machine of Example 1 of this invention begins to move rightward from a starting end position (collation book supply position). It is the external appearance perspective view seen from the front right upper part which shows the state which the clamper of the bookbinding machine of Example 1 of this invention clamped the collation book. It is the external appearance perspective view seen from the back right upper part which shows the state which the clamper of the bookbinding machine of Example 1 of this invention clamped the collation book. It is a left view which shows the relationship with the cutter of an upper rail, a lower rail, a conveyance mechanism, a base, and a milling mechanism in the state which the clamper of the bookbinding machine of Example 1 of this invention clamped the collated book. (A) It is explanatory drawing explaining the relationship between the upper left guide part and upper rail of the clamper of the bookbinding machine of Example 1 of the present invention. (B) It is explanatory drawing explaining the relationship between the upper right guide part and upper rail of the clamper of the bookbinding machine of Example 1 of the present invention. (A) It is explanatory drawing explaining the relationship between the lower left guide part and lower rail of the clamper of the bookbinding machine of Example 1 of the present invention. (B) It is explanatory drawing explaining the relationship between the lower right guide part and lower rail of the clamper of the bookbinding machine of Example 1 of the present invention. It is explanatory drawing explaining the effect | action of a guide part when the clamper of the bookbinding machine of Example 1 of this invention tilts ahead. It is explanatory drawing explaining the effect | action of a guide part when the clamper of the bookbinding machine of Example 1 of this invention tilts back. (A) It is explanatory drawing explaining the effect | action of the upper guide part at the time of the clamper of the bookbinding machine of Example 1 of this invention horizontally moving ahead. (B) It is explanatory drawing explaining an effect | action of the lower guide part when the clamper of the bookbinding machine of Example 1 of this invention horizontally moves ahead. (C) It is explanatory drawing explaining an effect | action of the upper guide part when the clamper of the bookbinding machine of Example 1 of this invention horizontally moves back. (D) It is explanatory drawing explaining the effect | action of the lower guide part when the clamper of the bookbinding machine of Example 1 of this invention horizontally moves back. (A) It is explanatory drawing explaining the effect | action of the upper guide part when the clamper of the bookbinding machine of Example 1 of this invention vertically moves upwards. (B) It is explanatory drawing explaining an effect | action of the lower guide part when the clamper of the bookbinding machine of Example 1 of this invention vertically moves upwards. (C) It is explanatory drawing explaining an effect | action of the upper guide part when the clamper of the bookbinding machine of Example 1 of this invention moves diagonally forward. (D) It is explanatory drawing explaining the effect | action of the lower guide part when the clamper of the bookbinding machine of Example 1 of this invention moves diagonally forward. It is the external appearance perspective view which abbreviate | omitted one part seen from the back upper right part which shows the state with which the clamper of the bookbinding machine of Example 1 of this invention was connected with the conveyance mechanism. It is the external appearance perspective view which abbreviate | omitted one part seen from the back right upper part which shows the relationship between the clamper of the bookbinding machine of Example 1 of this invention, an upper rail, and a lower rail. It is the external appearance perspective view seen from back right upper part which shows the assembly | attachment state of the clamper of the bookbinding machine of Example 1 of this invention, and the moving unit of a conveyance mechanism. It is a rear view of the clamper and conveyance mechanism of the bookbinding machine of Embodiment 1 of the present invention. It is a top view of the clamper and conveyance mechanism of the bookbinding machine of Embodiment 1 of the present invention. It is a left view of the clamper and conveyance mechanism of the bookbinding machine of Embodiment 1 of the present invention. (A) It is a graph explaining the moving speed of the clamper of the bookbinding machine of Example 1 of the present invention. (B) It is explanatory drawing explaining the effect | action of the nozzle of the glue application mechanism of the bookbinding machine of Example 1 of this invention. It is the front view which notched some examples of the type of bookbinding machine of the type which makes a conventional clamper perform reciprocating motion. FIG. 10 is a perspective view of an external appearance of a conventional example of a type of bookbinding machine that causes reciprocation of the conventional clamper and a part of the relationship between a clamper and a transport mechanism, with a part thereof omitted from the upper right side. It is the external appearance perspective view which abbreviate | omitted one part seen from the front right upper part which shows the relationship between the attachment plate of the clamper of an example of the type of bookbinding machine of the type which makes a conventional clamper reciprocate, and a chain. It is explanatory drawing explaining the relationship between the clamper of an example of the type of bookbinding machine of the type which makes a conventional clamper reciprocate, and a conveyance mechanism. It is explanatory drawing explaining the relationship between the clamper of an example of the type of bookbinding machine of the type which makes a conventional clamper reciprocate, and a conveyance mechanism. It is explanatory drawing explaining the relationship between the clamper of an example of the type of bookbinding machine of the type which makes a conventional clamper reciprocate, and a conveyance mechanism. (A) It is explanatory drawing explaining the relationship between a mounting plate and a chain at the time of the clamper of an example of the type of bookbinding machine of the type which makes a conventional clamper perform reciprocating motion. (B) It is explanatory drawing explaining the relationship between a mounting plate and a chain at the time of the clamper of an example of the type of bookbinding machine of the type which makes a conventional clamper perform reciprocation. (C) It is explanatory drawing explaining the relationship between a mounting plate and a chain when the clamper of an example of the type of bookbinding machine of the type which makes a conventional clamper perform reciprocating motion exists in a starting end position (collation book supply position). (D) It is explanatory drawing explaining the relationship between a mounting plate and a chain when the clamper of an example of the type of bookbinding machine of the type which makes a conventional clamper reciprocate exists in the position of a nipping mechanism. FIG. 10 is an explanatory diagram in which a part of the relationship between a mounting plate and a chain of a mechanism in which a clamper temporarily stops with a nipping mechanism in an example of a type of bookbinding machine that causes a conventional clamper to reciprocate is omitted. It is explanatory drawing which illustrates typically the basic composition of the bookbinding machine of the structure which rotates the conventional several clamper horizontally.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Clamper 11 Main body 11a Concave 11b Concave 11c Concave 11d Concave 11d Concave 11e Concave 11f Concave 11g Concave 11h Concave 11i Concave 11j Concave 11k Concave 11l Concave 11m Concave 111 Convex 111a Concave 111a Concave 111d Concave 111d Concave 111c Conc Portion 112b Protruding portion 113a Circular hole 113b Circular hole 114a Circular hole 114b Circular hole 114c Circular hole 115a Cylinder 115b Cylinder 115c Cylinder 116a Screw hole 116b Screw hole 116c Screw hole 117 Rod 12 Front plate 12a Circular hole 12b Circular hole 12c Circular hole 12c Circular hole 12c Portion 122 Circular hole 123 Circular hole 124 Upper surface 125 Screw hole 126 Screw hole 127 Bolt 128 Bolt 129 Guide plate 13 Movable portion 130 Body 130a Recess 130 Upper plate 130c Lower plate 130d Concave part 130e Concave part 130f Convex part 130g Convex part 130h Step part 130i Step part 130j Step part 131a Roller 131b Axis 132a Circular hole 132b Circular hole 133a Circular hole 133b Circular hole 133c Connecting shaft 134b Connecting shaft 134a Screw hole 134d Screw hole 134e Screw hole 134f Screw hole 135a Connection shaft 135b Connection shaft 135c Connection shaft 136a Coil spring 136b Coil spring 137a Coil spring 137b Coil spring 137c Coil spring 138a Bolt nut 138b Bolt nut 14 Ring 14 Ring 14 Ring 14 Ring 146 Ring 15 Guide portion 15a Bearing plate 15b Bearing shaft 15c Guide roller 15d Guide roller 16 Guide portion 6a support plate 16b support shaft 16c guide roller 16d guide roller 17 guide portion 17a support plate 17b support shaft 17c guide roller 17d guide roller 17e nut 17f screw hole 18 guide portion 18a support plate 18b support shaft 18c guide roller 18d guide roller 18e nut 18e Screw hole 2 Conveying mechanism 2a Bearing plate 2b Bearing plate 2c Bearing plate 2d Bearing plate 2e Bearing plate 21 Screw shaft 22 Moving unit 23 Servo motor 24 Bearing 25 Bearing 26 Bearing 3 Upper rail 31 Front plate 31a Lower surface 32 Rear plate 33 Upper plate 34 Recess 4 Lower rail 41 Front plate 41a Upper surface 42 Rear plate 43 Upper plate 44 Recess 5 Guide plate 51 Front 51a Left end 51b Right end 5a Support plate 5b Support plate 6 Pressing device 61 Rod 6a Support plate 7 Base 8 Mounting portion 8 Mounting plate 81a Screw hole 81b Screw hole 82 Mounting plate 82a Screw hole 82b Screw hole 83 Mounting plate 83a Screw hole 83b Screw hole 83c Screw hole 83d Screw hole 84 Bolt 85 Bolt 86a Bolt 86b Bolt 86c Bolt 86d Bolt B Book machine B B2 Bookbinding machine C1 Clearance C2 Clearance C3 Clearance C4 Clearance C5 Clearance C6 Clearance C7 Clearance C8 Clearance C9 Clearance C10 Clearance C11 Clearance C12 Clearance CV1 Conveyance mechanism CV2 Conveyance mechanism CN Chain CT Control part Cn Chain Cn1 Vertical part Cn3 Vertical part Cn3 Vertical part Cn3 Mounting plate Ct Cutter D1 Distance D2 Thickness D3 Distance D4 Distance D5 Distance D6 Effective width F Frame F Frame structure F1a upper frame F1b lower frame F1c rear frame F1d support plate F2 frame structure F2a upper frame F2b lower frame F2c rear frame F2d support plate F3 frame structure F3a upper frame F3b lower frame F3c rear frame F1d force support plate FC3d FL2 fulcrum G glue application mechanism Ga tube Gb tube G1 glue application mechanism G2 glue application mechanism H1 long hole L1 increment M milling mechanism M1 milling mechanism M2 milling mechanism N nipping mechanism N1 nipping mechanism N2 nipping mechanism Na sliding plate Nz nozzle P1 P2 clamper P3 clamper R1 roller R2 roller R3 roller R4 roller RL rail RL1 front plate RL2 rear plate RLa recess RLU rail S1 mounting plate S2 mounting plate SC1 space SC2 space SC3 gap SW start switch Se1 sensor S 2 Sensors Sp1 Sprocket Sp2 Sprocket Sp3 Sprocket Sp4 Sprocket T Base X1 Center line X2 Center line X3 Center line X4 Center line c1 Clearance c2 Clearance cp Chain pin b Collating book b 'Collating book 1 bb Distance d2 Distance h Handle p Pin s Mounting plate w1 Washer w2 Washer w3 Washer w4 Washer w5 Washer w6 Washer w7 Washer w8 Washer w9 Washer w10 Washer w11 Washer w11 Washer w11 Washer w11 Washer w11 Washer Δ5 Minute distance α Small angle β Small angle γ arrow δ arrow ε arrow

Claims (1)

A clamper that holds and moves the collation book, a transport mechanism that conveys the clamper, a milling mechanism that cuts the end of the spine portion of the collation book, and a glue application mechanism that applies glue to the spine portion of the collation book And, in a bookbinding machine having at least a nipping mechanism that attaches a cover to a collated book and shapes the spine,
The clamper is guided by two rails, an upper rail and a lower rail, fixed to the frame of the bookbinding machine, and conveyed in the horizontal direction.
The transport mechanism that transports the clamper is a linear motion device that uses a ball screw. The clamper transports the clamper from the starting position, that is, the collating main supply position, to the nipping mechanism through the milling mechanism and the glue application mechanism, and for a certain period of time by the nipping mechanism. After stopping and removing the collated book with cover, it can be sent back to the starting position, i.e. the collated book supply position,
When the front side is the side where the clamper's book is held,
A linear motion unit using a ball screw is fixed to the right side of the center of the back of the clamper.
The triangular apex of the movable part of the clamper is biased to the left in plan view, and the connecting shaft is skewed to the left in plan view, so the rightmost space in the space formed between the movable part and the body Is configured wider than the leftmost space,
On the upper part of the clamper, a guide portion having a guide roller for restricting movement of the clamper in the front-rear direction and a guide roller for restricting movement of the clamper in the up-down direction is provided,
A guide portion having a guide roller for restricting movement of the clamper in the front-rear direction and a guide roller for load receiving to be in contact with the lower rail is provided at the lower portion of the clamper.
The upper rail and the lower rail have a front plate, a rear plate, a recess, and a horizontal plane,
The guide roller that restricts the movement of the upper part of the clamper in the front-rear direction is housed in the recess of the upper rail with the clamper standing upright, and is configured so that the clearance between the front rail and the rear plate of the upper rail is substantially equal. ,
The guide roller that restricts the movement of the lower part of the clamper in the front-rear direction is housed in the recess of the lower rail while the clamper is standing upright, and is configured so that the clearance between the front plate and the rear plate of the lower rail is substantially equal. ,
It has a controller that can control the clamper transport speed and stop time at the nipping mechanism,
In the nozzle spraying system, the glue application mechanism sprays the glue from the nozzle and applies it to the spine of the book.
The transport speed of the clamper is selected in relation to the thickness of the collage book, i.e., the clamper transport speed is set higher when the thickness of the collage book is thin, and the clamper speed is increased when the thickness of the collage book is thick. Set the transport speed slower ,
Adjustment of the width of the nozzle is performed by changing the effective width of the nozzle by sliding a sliding plate covering the nozzle of a certain width in the front-rear direction.
This is a bookbinding machine.

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