JP4311823B2 - Back bonding machine for bookbinding - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a book binding back gluing device, and more particularly to adjusting a back gluing gluing timing.
[0002]
[Prior art]
A well-known bookbinding device that performs so-called wireless binding is a well-known technique in which signatures are collected in page order by a collating machine and glued to the back of the body (booklet), and a cover is attached to the back of the glued booklet. Yes. Such bookbinding devices generally include bookbinding, such as a milling unit that aligns the back of the booklet to the same level, a glued part that glues the back of the booklet after milling, and a cover pasting unit that attaches a cover to the back of the booklet after gluing. A processing unit and a clamp that moves around the bookbinding processing unit are provided, and a booklet for bookbinding processing is sandwiched between the clamps and bookbinding is performed as the clamp moves.
[0003]
The gluing section in such a bookbinding apparatus is provided with a glue tank for storing glue and a roller that rotates with the glue immersed in the glue tank and attached to the surface. Apply the glue to the back of the booklet that is carried by the clamp. FIG. 3 shows the configuration of a book binding back gluing device installed in such a gluing section. In FIG. 3, 1 is a booklet, 2 is a clamp, 3 is a glue tank, 4 is glue, 5 is a roller, 6 Is a wiper plate, 7 is a cam follower, 8 is a disk-shaped cam, 9 is a power transmission sprocket, and 11 and 12 are chains.
[0004]
The clamp 2 includes a fixed clamp plate 2a and a movable clamp plate 2b, and a positioning reference shaft 2c (for driving and supporting the movable clamp plate 2b) between the fixed clamp plate 2a and the movable clamp plate 2b. Is held in contact with the rear end side shaft). The roller 5 rotates in synchronization with the movement of the clamp 2 by the movement of the chain 11 hung on the power transmission sprocket 9, and a notch 5 a having an appropriate width is formed in the portion of the clamp 2 substantially facing the positioning reference shaft 2 c. Has been. The notch 5a determines the gluing end timing on the rear end side of the back surface 1a of the booklet 1.
[0005]
The disc-shaped cam 8 has a long hole 8c through which a fixing bolt 8d is inserted coaxially, and a predetermined position of the long hole 8c on the rotating plate 13 that rotates by the movement of the chain 12 hung on the power transmission sprocket 9. It is fastened and fixed with a bolt 8d through which is inserted. The wiper plate 6 is disposed at a position close to the surface of the roller 5 that escapes from the glue tank 3, and comes into contact with the peak portion 8a and the valley portion 8b of the cam 8 and swings according to the peak portion 8a and the valley portion 8b. It is fixed to the follower 7. When the cam follower 7 is in contact with the peak portion 8a of the cam 8, the wiper plate 6 contacts the surface of the roller 5, scraping off the glue 4 adhering to the surface of the roller 5, and the cam follower 7 When it is in contact with the valley portion 8 a, the wiper plate 6 is in a close position away from the surface of the roller 5, and the thickness of the glue 4 attached to the surface of the roller 5 is made uniform.
[0006]
In the bookbinding back gluing device configured as described above, the cam 8 and the roller 5 rotate during operation. Before the clamp 2 reaches the roller 5, the cam follower 7 is in contact with the crest 8 a of the cam 8, and the wiper plate 6 contacts the surface of the roller 5, and the glue 4 adhered to the surface of the roller 5 is removed. Scraping off. Due to this scraping, there is no glue 4 on the surface of the roller 5 facing the clamp 2, and even if the clamp 2 is located above the roller 5 (glue application point), the glue 4 is not applied to the clamp 2.
[0007]
Subsequently, the clamp 2 moves, and when the front end portion of the back surface 1a of the booklet 1 being sandwiched reaches the upper side of the roller 5, the cam follower 7 is in contact with the valley portion 8b of the cam 8, and the wiper plate 6 Is away from the surface of the roller 5, and glue 4 adheres to the surface of the roller 5 facing the back surface 1 a of the booklet 1, and the adhered glue 4 is applied to the back surface 1 a of the booklet 1. This application is continued while the back surface 1 a of the booklet 1 passes over the roller 45 by the movement of the clamp 2 and the rotation of the roller 5.
[0008]
Eventually, when the rear end portion of the back surface 1a of the booklet 1 reaches above the roller 5, the notch 5a of the roller 5 reaches a position facing the rear end portion of the back surface 1a of the booklet 1, and by this arrival, the back surface of the booklet 1 is reached. The glue 4 is passed over the roller 4 without being applied to the rearmost end of 1a and the rear end of the clamp 2, and the gluing of the booklet 1 is completed. That is, in this example, the boundary 8e between the crest 8a and the trough 8b located on the rear side with respect to the rotation direction of the cam 8 determines the timing for starting the pasting of the back surface 1a of the booklet 1. Note that the boundary 8f between the crest 8a and the trough 8b on the front side with respect to the rotational direction of the cam 8 is the timing to start scraping off the paste 4, but before this timing, the notch 5a of the roller 5 The booklet 1 is no longer glued upon arrival.
[0009]
Therefore, when this boundary 8e is advanced in the rotational direction of the cam 8, the glue 4 is adhered on the surface of the roller 5 before the tip of the back surface 1a of the booklet 1 reaches above the roller 5, and the booklet 1 Adhesive 4 is applied to the back surface 1a from the leading edge, and if it is delayed, even if the front end portion of the back surface 1a of the booklet 1 reaches above the roller 5, no adhesive is applied to the front end portion, and the booklet 1 is delayed. Gluing of the back surface 1a of the paper is started. Usually, in order to prevent the glue from sticking out at the end, the front and rear ends of the back face 1a of the booklet 1 are left slightly and glued to the other central part. Needless to say, the boundary position is expected to be a distance from the position of the wiper plate 6 to the application position.
[0010]
[Problems to be solved by the invention]
By the way, such a gluing timing needs to be adjusted when the gluing length on the back of the booklet, that is, when the size of the booklet is changed or when the gluing position of the booklet is changed. In this adjustment, the bolt 8d fixing the cam 8 is loosened, the cam 8 is rotated by a necessary amount along the long hole 8c, and the rotation angle position of the boundary 8e between the peak portion 8a and the valley portion 8b of the cam 8 is set to an appropriate position. Then, the bolt 8d is tightened and fixed again at that position, and the timing for starting the pasting after the change is set. Such adjustment is widely used because the accuracy of the gluing position is stable. However, there is a problem that a tool is required to perform the adjustment, and it cannot be adjusted during operation, and the cam 8 itself rotates, so that it is difficult to adjust with the motor force.
[0011]
The present invention has been made in view of such problems. In a bookbinding back gluing device in which a gluing timing is set by a rotating cam, a tool is not required for the timing setting and the device is in operation. It is another object of the present invention to provide a book binding back gluing device that can be easily performed.
[0012]
[Means for Solving the Problems]
The invention according to claim 1 comprises a roller that adheres to the surface and rotates in synchronization with the movement of the clamp holding the booklet, and a wiper plate that contacts and separates from the surface of the roller, and the roller of the wiper plate In a book binding back gluing device that is glued to a predetermined position on the back of the booklet according to the timing of contact with and separated from the surface of the booklet, a sun gear fixed to a drive shaft that rotates in conjunction with the movement of the clamp, A plurality of planetary gears meshed with the sun gear, a disc-shaped cam attached to a central axis of the plurality of planetary gears , an internal gear meshed with the planetary gear, and a gear formed on the outer periphery of the internal gear; A gear that meshes with and rotates by rotation of the electric motor , and a cam follower fixed to the wiper plate that operates in contact with the disk-shaped cam, and the rotation angle position of the internal gear by rotation of the electric motor. In the settings Ipa plate and determines the timing away from the surface of the roller.
[0013]
The invention according to claim 2 comprises a roller that adheres to the surface and rotates in synchronization with the movement of the clamp holding the booklet, and a wiper plate that contacts and separates from the surface of the roller, and the roller of the wiper plate In the book binding back gluing device, which is glued to a predetermined position on the back of the booklet according to the timing of contact with the surface of the book, the first and second fixed to the drive shaft rotating in conjunction with the movement of the clamp and two sun gears, a first plurality of planet gears meshing with said first sun gear, a first disk-shaped cam mounted on the central axis of said first plurality of planet gears, said A first internal gear that meshes with the first planetary gear, a first gear that meshes with a gear formed on the outer periphery of the first internal gear and rotates by rotation of the first electric motor, and the second gear A second plurality of planetary gears meshing with the sun gear; A second disk-shaped cam attached to the central axis of a plurality of planetary gears, a second internal gear meshing with the second planetary gear, and a gear formed on the outer periphery of the second internal gear has meshed with a second gear that rotates by the rotation of the second motor, said first and second disk-like cam across a cam follower fixed to the wiper plate which operates in contact with, said first The timing at which the wiper plate moves away from the surface of the roller by setting the rotation angle position of the first internal gear by the rotation of the first motor is the timing of the second internal gear by the rotation of the second motor. The timing at which the wiper plate contacts the surface of the roller is determined by setting a rotation angle position .
[0015]
In the present invention, a sun gear at the center, an internal gear on the outer periphery, and a plurality of planetary gears between them, a disk-shaped cam is attached to the central axis of the plurality of planetary gears, and the internal gear is rotated. Rotation angle position setting means for changing the rotation angle position is provided. If the number of teeth is determined so that the cam makes one rotation for one cycle of gluing (until the clamp enters the gluing portion and escapes), the timing according to the setting of the rotation angle position setting means Gluing is started. When changing the timing, the internal gear is rotated by a predetermined amount by the rotation angle position setting means. This rotation causes the cam to advance or delay by a predetermined amount in the direction of rotation, thereby changing the timing. The change can be easily performed while the cam is rotating, that is, during operation of the apparatus.
[0016]
When two planetary gear devices having such cams are arranged on the same axis, for example, and arranged so as to be in contact with each other across the two sets of cams (claim 2), The gluing start timing can be arbitrarily set by the cam, and the gluing end timing can be arbitrarily set by the other cam, so that the notch of the roller to which the gluing is applied is not necessary, and gluing independent of the diameter of the roller is possible. In any of the first and second aspects of the present invention, it is possible to easily use an electric motor for the rotation angle position setting means, and it is quick and easy without requiring a tool for changing the setting of the gluing timing. The setting of the gluing timing can be changed.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIG. 1 and FIG. FIG. 1 is a plan view showing the configuration of a book binding back gluing device according to an embodiment of the present invention, and FIG. 2 is a cross section showing the configuration of a cam portion of a book binding back gluing device according to another embodiment of the present invention. FIG. In addition, the same code | symbol is attached | subjected to the part and the corresponding part of the conventional back binding apparatus for bookbinding shown in FIG.
[0018]
In FIG. 1, 1 is a booklet, 2 is a clamp, 3 is a glue tank, 4 is glue, 5 is a roller, 6 is a wiper plate, 7 is a cam follower, 8 is a disk-shaped cam, 9 is a power transmission sprocket, 11 12 and 12 are chains, 14 is a sun gear, 15 is a planetary gear, 16 is an internal gear, 17 is an electric motor, and 18 is a gear. The structure including the clamp 2, the glue tank 3, the roller 5, the wiper plate 6, the cam follower 7, the disk-shaped cam 8 excluding the rotating mechanism, the power transmission sprocket 9, and the chains 11 and 12 is the same as the conventional one shown in FIG. Therefore, detailed description thereof is omitted here.
[0019]
The disc-shaped cam 8 has three sun gears 14 and three internal gears 16 that mesh with each other between a sun gear 14 that is positioned at the center that is rotated by the movement of the chain 12 and an internal gear 16 that is on the outer periphery thereof. It is attached to the central axis of the planetary gear 15. By this attachment, the planetary gear 15 is supported by the disc-shaped cam 8. The external gear 16 c is formed on the outer periphery of the internal gear 16, and meshes with the external gear 16 c and a gear 18 that rotates as the electric motor 18 rotates. In this embodiment, each of the internal teeth of the sun gear 14, the planetary gear 15, and the internal gear 16 is set so that the cam 8 makes one rotation for one cycle of gluing in which the clamp 2 enters and exits the gluing portion. The number of teeth is set.
[0020]
In the bookbinding back gluing device configured as described above, when the electric motor 17 is driven, the gear 18 rotates, and the rotation rotates the cam 8 through the rotation of the internal gear 16 and the planetary gear 15, and the crest of the cam 8. The rotational angle position of the boundary 8e between the portion 8a and the valley portion 8b is set to a position corresponding to the pasting start point of the back surface 1a of the booklet 1 to be glued. That is, the electric motor 17, the gear 18, and the external teeth 16c of the internal gear 16 function as rotation angle position setting means.
[0021]
During operation, the cam 8 and the roller 5 are rotating in a state set in advance by the rotation angle position setting means. The clamp 2 holding the booklet 1 moves above the roller 5. When the gluing start position of the back surface 1a of the booklet 1 is located above the roller 5 (glue application point), it is combined with the glue 4 attached to the surface of the roller 5 at that position, and glue is applied to the back surface 1a of the booklet 1 from that position. Applied. This application is continued while the back surface 1 a of the booklet 1 passes over the roller 45 by the movement of the clamp 2 and the rotation of the roller 5.
[0022]
Eventually, when the rear end portion of the back surface 1a of the booklet 1 reaches above the roller 5, the notch 5a of the roller 5 reaches a position facing the rear end portion of the back surface 1a of the booklet 1, and by this arrival, the back surface of the booklet 1 is reached. The glue 4 is passed over the roller 4 without being applied to the rearmost end of 1a and the rear end of the clamp 2, and the gluing of the booklet 1 is completed. Since the operation of the wiper plate 6 is the same as that in the prior art, a detailed description thereof will be omitted.
[0023]
Here, when the gluing start position is changed by changing the size of the booklet 1 or the like, the motor 17 is driven to rotate the gear 18 by a predetermined amount, the cam 8 is rotated by the changed amount, and the peak portion 8a of the cam 8 is rotated. The rotational angle position of the boundary 8e of the valley portion 8b is reset to a position corresponding to the gluing start point of the rear surface 1a of the changed booklet 1. This setting may be performed while the operation is continued, or may be performed after the operation is stopped.
[0024]
In the above embodiment, the gluing end point of the booklet 1 is determined by the notch 5a of the roller 5 (this is based on the fact that the rear end of the booklet 1 is always at the clamp reference position). Therefore, the diameter of the roller 5 corresponding to the circumferential length excluding the notch 5a of the roller 5 is required from the maximum length of the booklet 1 to be glued, and the roller 5 increases as the maximum length of the glued length increases. Increases in size. In order to avoid this, both the gluing start timing and the gluing end timing may be set arbitrarily.
[0025]
FIG. 2 shows a configuration of a cam portion of a bookbinding back gluing device according to another embodiment in which both timings can be arbitrarily set. In this embodiment, two cam sets shown in FIG. 1 are arranged on the same axis and are provided with a cam follower 7 that operates in contact with the two cams. The notch 5a of the roller 5 is eliminated, and the roller 5 is synchronized with the movement of the clamp 2 holding the booklet 1, but the number of rotations is set appropriately. That is, the number of rotations may be 1 or more in one cycle of gluing, and may be 1 or less in some cases. The overall configuration of the booklet 1, the clamp 2, the glue tank 3, the glue 4, the roller 5, the wiper plate 6, the cam follower 7, etc. is the same as that shown in FIG.
[0026]
In FIG. 2, reference numeral 19 denotes a drive shaft that rotationally drives a sun gear that rotates as the chain 12 shown in FIG. 1 moves. Two sun gears 14 a and 14 b are fixed to the drive shaft 19 side by side. A plurality of planetary gears 15a and 15b meshing independently with the sun gears 14a and 14b are provided, and internal gears 16a and 16b meshing independently with the planetary gears 15a and 15b are provided. . External teeth 16ac and 16bc are formed on the outer circumferences of the internal gears 16a and 16b, respectively, and gears 18a and 18b fixed to the rotating shafts of the motors 17a and 17b are meshed with each other independently of the external teeth 16ac and 16bc. is doing.
[0027]
The disc-shaped cam 8a is attached to the central axis of the plurality of planetary gears 15a, and the disc-shaped cam 8b is attached to the central axis of the plurality of planetary gears 15b. The first planetary gear device comprising the sun gear 14a, the planetary gear 15a, the internal gear 16a and the disc-shaped cam 8a, and the first rotational angle position setting means comprising the motor 17a and the gear 18a are shown in FIG. The second rotational angle position setting means comprising the second planetary gear device comprising the sun gear 14b, the planetary gear 15b, the internal gear 16b and the disc-shaped cam 8b, the motor 17b and the gear 18b is provided. 1 has the same configuration as that shown in FIG. 1, and the disc-shaped cam 8a and the disc-shaped cam 8b are arranged next to each other so as to face each other.
[0028]
The rotation angle positions of the crests and troughs of each of the disc-shaped cams 8a, 8b of the first and second planetary gear devices are independently controlled by operating the first and second rotation angle position setting means. Can be set. Therefore, for example, when the disk-shaped cam 8a and the disk-shaped cam 8b are made to have the same shape, and the rotation angle positions of the peak portions are different from each other, the peak portion positioned on the front side in the rotation direction of one disk-shaped cam 8a. The distance between the boundary between the ridge and the valley located on the rear side in the rotation direction of the other disc-shaped cam 8b can be varied, and the glue start timing and glue end timing on the back of the booklet Both can be set arbitrarily. The disk-shaped cams 8a and 8b function as an integrated member by the cam follower 7 that operates by abutting over these cams, so that the operation at the time of gluing is the same as in FIG. 1 except that gluing is terminated by the cam. Therefore, detailed description thereof is omitted.
[0029]
In each embodiment, the internal gear is rotated by an electric motor, but may be manually rotated by a handle, for example. Further, the external teeth formed on the outer periphery of the internal gear may not be the entire range of the outer periphery of the internal gear.
[0030]
【The invention's effect】
As described above in detail, according to the present invention, the sun gear at the center, the internal gears on the outer periphery, and the plurality of planetary gears between them are provided, and the disc-shaped cam is provided on the central axes of the plurality of planetary gears. It is equipped with a rotation angle position setting means that changes the rotation angle position by rotating the internal gear, so that the booklet can be easily glued at any time, making it easy to handle back gluing for bookbinding A device is obtained.
[0031]
Further, for example, two sets of planetary gear devices having cams are arranged on the same axis, and are provided with a cam follower that operates in contact with the two sets of cams. Thus, the size of the roller for applying glue can be reduced, and the space for the glued portion can be saved.
[Brief description of the drawings]
FIG. 1 is a plan view showing the configuration of a bookbinding back gluing device according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view showing a configuration of a cam portion of a bookbinding back gluing device according to another embodiment of the present invention.
FIG. 3 is a plan view showing a configuration of a conventional bookbinding back gluing device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Booklet 1a Back of booklet 2 Clamp 2c Reference position 3 Glue tank 4 Glue 5 Roller 5a Notch 6 Wiper plate 7 Cam follower 8 Disc-shaped cam 8a Mountain part 8b Valley part 8e, 8fb Boundary (gluing timing position)
9 Power transmission sprocket 11, 12 Chain 14, 14a, 14b Sun gear 15, 15a, 15b Planetary gear 16, 16a, 16b Internal gear 16c, 16ac, 16bc External gear 17, 17a, 17b Electric motor 18, 18a, 18b Gear 19 Drive shaft

Claims (2)

A roller that rotates in synchronization with the movement of a clamp that has glue attached to the surface and sandwiches a booklet, and a wiper plate that contacts and separates from the surface of the roller. Timing of contact and separation of the wiper plate to and from the surface of the roller In the bookbinding back gluing device, the sun gear fixed to the drive shaft rotating in conjunction with the movement of the clamp, and a plurality of planets meshing with the sun gear A gear, a disk-shaped cam attached to the central axis of the plurality of planetary gears , an internal gear meshing with the planetary gear, and a gear formed on the outer periphery of the internal gear are rotated by rotation of the electric motor. gear and having a cam follower fixed to the wiper plate which operates in contact with the disk-shaped cam, said wiper plate said roller by setting the rotation angle position of the internal gear by the rotation of the electric motor Bookbinding back gluing apparatus characterized by determining a timing away from the surface. A roller that rotates in synchronization with the movement of a clamp that has glue attached to the surface and sandwiches a booklet, and a wiper plate that contacts and separates from the surface of the roller. Timing of contact and separation of the wiper plate to and from the surface of the roller In the bookbinding back gluing device that is glued at a predetermined position on the back of the booklet, the first and second sun gears fixed to the drive shaft that rotates in conjunction with the movement of the clamp, A first plurality of planetary gears meshed with the first sun gear, a first disk-shaped cam attached to a central axis of the first plurality of planetary gears , and a mesh with the first planetary gear A first internal gear, a first gear that meshes with a gear formed on the outer periphery of the first internal gear and rotates by rotation of the first electric motor, and a second gear that meshes with the second sun gear. A plurality of planetary gears and the center of the second plurality of planetary gears A second disk-shaped cam attached to the second planetary gear, a second internal gear meshing with the second planetary gear, and a gear formed on the outer periphery of the second internal gear, A second gear that rotates by rotation, and a cam follower fixed to the wiper plate that operates in contact with the first and second disk-shaped cams , and the rotation of the first electric motor The timing at which the wiper plate is separated from the surface of the roller by setting the rotation angle position of the first internal gear is set by the setting of the rotation angle position of the second internal gear by the rotation of the second motor. A back gluing device for bookbinding, wherein the timing when the wiper plate contacts the surface of the roller is determined .

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