JP3805490B2 - Gluing device for paper binding - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a gluing device used when gluing and binding a back side of a printed sheet bundle or the like.
[0002]
[Prior art]
As one method for binding a printed sheet bundle or the like, there is so-called wireless binding in which the back side of the sheet bundle is glued. FIG. 7 is a schematic front view showing a conventional example of a gluing device used for such a perfect binding. In FIG. 7, 1 is a gluing device, 20 is a sheet bundle for one book, and 21 is a clamper (one clamp plate is shown in the figure) that moves while holding the sheet bundle 20 therebetween.
[0003]
The gluing device 1 includes a container 3 that stores a paste 4 such as hot melt, a roller 2 that is partly immersed in the glue 3 in the container 3, and is rotatably supported in the container 3. A glue thickness adjusting member 9 that is rotatably supported by the motor, a motor 5 that rotationally drives the roller 2, and a motor (not shown) that drives the glue thickness adjusting member 9 (the rotary shaft 10 is shown). It is configured with. Reference numeral 6 denotes a rotary drive sprocket connected to the rotary shaft of the motor 5, 8 denotes a driven sprocket connected to the shaft of the roller 2, and 7 denotes a chain spanned between the rotary drive sprocket 6 and the driven sprocket 8.
[0004]
The adhesive thickness adjusting member 9 has a substantially U-shaped cross section, is disposed along the axial direction of the roller 2 in the vicinity of the roller 2, and one end of the U-shaped shape is fixed to the rotating shaft. The tip of the other end is configured to approach and separate from the surface of the roller 2 by the rotation of the rotating shaft 10.
[0005]
In the gluing device 1 configured in this way, when the motor 5 rotates when gluing the back surface of the sheet bundle 20 that is sandwiched and moved by the clamper 21, the rotary drive sprocket 6 attached to the output shaft rotates. The power is transmitted to the chain 7 to drive the chain 7. When the chain 7 is driven, the driven sprocket 8 is driven and rotated, and the roller 2 connected to the output shaft rotates counterclockwise.
[0006]
When the roller 2 rotates, the adhesive glue 4 is attracted to the roller 2 and moves in the container along with the rotation, and the glue 4 adhered to the surface of the roller 2 is transferred to the position of the sheet bundle 20 and the sheet. The glue is applied to the back surface of the bundle 20. The sheet bundle 20 is sandwiched by the clamper 21 and moves on the roller 2 from the left side to the right side in the figure (in the direction of arrow Z), and the back surface is glued by the glue 4 supplied from the roller 2.
[0007]
When the gluing device 1 performs the gluing process on the sheet bundle 20, the glue thickness adjusting member 9 is used to adjust the thickness of the glue applied so that excessive glue does not adhere to the back surface of the sheet bundle 20. Is done. When the rotary shaft 10 is rotated and the tip of the glue thickness adjusting member 9 moves in a direction approaching the surface of the roller 2, the size of the gap formed between the tip of the glue thickness adjusting member 9 and the surface of the roller 2. Only an amount of glue passes through and is transferred to the back surface of the sheet bundle 20, and the paste 4 a adheres to the back surface of the sheet bundle 20. By appropriately selecting the size of the gap between the tip of the glue thickness adjusting member 9 and the surface of the roller 2, the thickness of the glue 4 applied to the back surface of the sheet bundle 20 is adjusted to an appropriate amount.
[0008]
In the example of FIG. 7, the rotation direction of the roller 2 is set in the counterclockwise direction, but the rotation direction of the roller 2 is set in either the clockwise direction or the counterclockwise direction. . When the paper bundle 20 is soft or the paper bundle 20 is thin, the rotation direction of the roller 2 is set to the clockwise direction, and the glue 4 is applied from the same direction as the movement direction of the paper bundle 20. Supply. In this case, the sheet bundle 20 moves on the roller 2 without sliding, so that a thin gluing process is performed on the back surface of the sheet bundle 20.
[0009]
Further, when the paper bundle 20 is hard or thick, the roller 2 is set to rotate counterclockwise and is opposite to the movement direction of the paper bundle 20. The glue 4 is supplied so as to give resistance from the direction, and the glue 4 is inserted between the backs of the respective sheets of the sheet bundle to thicken and firmly apply the glue to the back of the sheet bundle 20. In this way, the rotation direction of the roller 2 is selected to be the clockwise direction or the counterclockwise direction depending on the paper quality and thickness of the sheet bundle to be glued.
[0010]
[Problems to be solved by the invention]
In the conventional gluing device, the rotation direction of the roller is set to a fixed direction, and the glue thickness adjusting member also works for the roller that rotates in the clockwise direction in accordance with the set rotation direction of the roller. Alternatively, only a single glue thickness adjusting member is provided as a glue thickness adjusting member that acts as a roller rotating in a counterclockwise direction.
[0011]
As described above, in the conventional gluing device, the rotation direction of the roller is set only in one direction, and the gluing thickness adjusting member provided as the roller is also positioned at the front side or the rear side of the roller with respect to the sheet bundle transfer direction. It was used as a dedicated machine that was fixed in one place. However, recently, there has been an increasing demand for gluing processing of various paper bundles having different paper quality and thickness, and a gluing device configured to meet such diversified demands of users has been developed. There wasn't. For this reason, when it is necessary to paste various paper bundles having different paper qualities and thicknesses, two gluing devices having different roller rotation directions are required, which increases costs and increases installation space. there were.
[0012]
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a paper binding gluing device that can adjust the thickness of glue applied to the back surface of a sheet bundle regardless of the direction of rotation of the roller. And
[0013]
[Means for Solving the Problems]
The above-described object is achieved by providing a sheet binding gluing device having the configuration described in claims 1 to 4 below.
[0014]
According to the first aspect of the present invention, a paper binding gluing device is disposed by immersing a part thereof in glue stored in a container, and the roller for applying the glue in the container to the back surface of the sheet bundle while rotating, In the gluing device for paper binding, the gluing thickness adjustment member includes a gluing thickness adjusting member that adjusts the thickness of the glue attached to the roller located on the back surface of the paper bundle and can approach and separate from the roller surface. The members are arranged at positions on both sides close to the roller.
[0015]
According to a second aspect of the present invention, in the paper binding gluing device according to the first aspect, at least one of the glue thickness adjusting members is provided with a biasing force by a spring, and the spring is attached by a glue that moves as the roller rotates. It is characterized in that the glue thickness adjusting member is driven against the force.
[0016]
According to a third aspect of the present invention, in the gluing device for paper binding according to the first aspect, at least one of the glue thickness adjusting members is driven by using an electric driving force.
[0017]
The invention according to claim 4 is a part of the glue contained in the container for pre-processing and post-processing rollers for applying the glue in the container to the back surface of the sheet bundle while rotating the sheet-binding gluing device. The roller for pretreatment sets the rotation direction only in one direction, and a single glue thickness adjusting member is provided at a position close to the roller, and the glue thickness adjusting member is placed on the roller surface. Adjust the thickness of the glue applied to the back of the stack of paper by moving it closer, and the post-processing roller can be rotated in both clockwise and counterclockwise directions, Adhesive thickness adjustment members are provided at positions on both sides close to the roller, and one adhesive thickness adjustment member is moved in the direction approaching the surface of the roller in accordance with the set rotation direction of the roller, and the back side of the sheet bundle Adjust the latter part of the amount of glue applied to the It is characterized in that.
[0018]
With the configuration of the first aspect, since the adhesive thickness adjusting members are arranged at positions on both sides close to the roller, the roller is applied to the back surface of the sheet bundle regardless of the rotation direction of the roller. Thus, a sheet binding gluing device can be obtained which can adjust the thickness of the glue to be used and can meet the demands of users diversified by a single gluing device.
[0019]
Further, the configuration of claim 2 allows the glue thickness adjusting member to be driven without using other electrical and mechanical driving means so that the amount of glue applied to the back surface of the sheet bundle can be adjusted. Therefore, the cost of the sheet binding gluing device can be reduced.
[0020]
According to the third aspect of the present invention, the glue thickness adjusting member is driven using an electric driving force, so that the glueing device can be operated reliably.
[0021]
Further, according to the configuration of the fourth aspect, the glue heated by one roller is applied to the back surface of the sheet bundle and pre-glued, and the post-gluing is performed by the other roller. Since the gluing process is performed twice, the gluing process can be performed reliably, and an appropriate amount of gluing can be applied to the back surface of the sheet bundle by selecting the rotation direction of the rollers.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a paper binding gluing device according to the present invention will be described with reference to the drawings. FIG. 1 is a schematic perspective view of a sheet binding gluing device according to an embodiment of the present invention. 2, 3 and 4 are sectional views of the container 3 on the side opposite to the side where the driven sprocket 8 is attached in FIG. 3 shows a state where the roller 2 is rotating in the counterclockwise direction, and FIG. 4 shows a state where the roller 2 is rotating in the clockwise direction. The same parts as those in the conventional example of FIG. 7 or corresponding parts are denoted by the same reference numerals, and detailed description thereof is omitted to avoid duplication. The rotation direction of the roller 2 is set to be switchable in a clockwise direction or a counterclockwise direction. By switching the rotation direction of the motor 5, the rotation direction of the roller 2 is also switched.
[0023]
In FIGS. 1 and 2, 9a and 9b are substantially L-shaped first and second adhesive thickness adjusting members each having a front end portion on the side facing the roller 2 and a base portion connected thereto, and a sheet bundle transfer direction. It is arranged along the axial direction of the roller 2 at positions on both the front side and the rear side of the roller 2 with respect to Z, close to the roller 2. 13a and 13b are first and second support rods, 14a and 14b are first and second fixing glue guides, 15a and 15b are first and second fixing tools, and 16a and 16b are first and second. The torsion springs 17a and 17b are first and second mounting frame bodies, and 18 is a roller rotation shaft. The first and second support bars 13 a and 13 b are fixed to the side wall of the container 3. First and second fixed glue guides 14a and 14b are fixed to the first and second support bars 13a and 13b by welding or the like.
[0024]
The two first mounting frame bodies 17 a are disposed between the both side surfaces of the roller 2. Notches 17x ₁ Each mounting frame 17a, to form a protruding portion 17x _2, to fix the respective cutout portions 17x ₁ of the two first mounting frame member 17a to the first support rod 13a. Further, the first fastener 15a to the protruding portion 17x ₂ of one of the mounting frame 17a attached to one end of the first glue thickness adjusting member 9a rotatably, the first fixture on the other of the projections 17x ₂ The other end of the first glue thickness adjusting member 9a is rotatably attached to 15a with the first torsion spring 16a interposed.
[0025]
Two second mounting frames 17b are also arranged between the both side surfaces of the roller 2. Similarly to the first mounting frame 17a, the second mounting frame 17b is also formed with a notch 17y ₁ and a projection 17y ₂ and the second fixing tool 15b and the second torsion spring 16b provide the second The paste thickness adjusting member 9b is rotatably attached. As shown in FIG. 2, when the roller 2 is stationary, both the first and second adhesive thickness adjusting members 9a and 9b are applied with the urging forces of the first and second torsion springs 16a and 16b. Therefore, the tip portion is disposed substantially parallel to the surface of the roller 2 by the biasing force.
[0026]
The operation of the glue thickness adjusting member when the roller 2 rotates counterclockwise will be described with reference to FIG. In FIG. 3, when the roller 2 rotates counterclockwise (arrow G direction), the glue 4 moving so as to be attracted to the surface of the rotating roller 2 is the second fixed glue guide 14b and the roller 2. And reaches the tip of the second glue thickness adjusting member 9b. The distal end portion of the second glue thickness adjusting member 9b is urged by the urging force of the second torsion spring 16b and is disposed between the surface of the roller 2 and the second fixed glue guide 14b at a position substantially parallel to the roller surface. However, if the action of the glue movement exceeds the biasing force of the second torsion spring 16b, the tip of the second glue thickness adjusting member 9b resists the biasing force of the torsion spring 16b as the glue moves. Then, it gradually moves away from the second fixed glue guide 14b and is rotated from a position substantially parallel to the surface of the roller 2 to a vertical position.
[0027]
When the base portion connected to the tip of the second glue thickness adjusting member 9b reaches the position of the second fixed glue guide 14b, the glue thickness adjusting member 9b stops rotating, and the tip of the glue thickness adjusting member 9b Stops at a position perpendicular to the surface of the roller 2. At this time, an excessive amount is scraped off from the surface of the roller 2 by the second glue thickness adjusting member 9b, and is formed between the tip portion of the second glue thickness adjusting member 9b and the surface of the roller 2. Only the amount of glue that has passed through the gap is applied to the back of the sheet bundle.
[0028]
In other words, the second glue thickness adjusting member 9b to which the urging force is applied by the second torsion spring 16b does not require a separate driving force, and the tip portion thereof is caused by the glue that moves as the roller 2 rotates. Is rotated to a position perpendicular to the surface of the roller 2 to adjust the amount of glue applied to the back surface of the sheet bundle. The magnitude of the spring pressure of the second torsion spring 16b is such that the tip portion of the second glue thickness adjusting member 9b is substantially horizontal with respect to the surface of the roller 2 by the action of the glue 4 moving as described above. It is set to a size that allows it to rotate to a vertical position from.
[0029]
Next, the operation of the first glue thickness adjusting member 9a when the roller 2 rotates clockwise will be described with reference to FIG. As the roller 2 rotates in the clockwise direction (in the direction of the arrow S in the figure), the glue 4 moves so as to be attracted to the surface of the roller 2, and as in the case of FIG. The tip portion of the first glue thickness adjusting member 9a rotates from a position substantially parallel to the surface of the roller 2 to a position perpendicular to the roller 2 surface. Excess glue is scraped off by the first glue thickness adjusting member 9a, and only the glue passing through the gap between the front end portion of the first glue thickness adjusting member 9a and the surface of the roller 2 is adjusted to the back of the sheet bundle. Applied.
[0030]
The urging forces of the first and second torsion springs 16a and 16b are always such that the tip portions of the first and second adhesive thickness adjusting members 9a and 9b are almost parallel to the surface of the roller 2 as described above. 2 and the first and second fixed glue guides 14a and 14b. Due to the action of the glue moving as the roller 2 rotates, the tip portions of the first and second glue thickness adjusting members 9a and 9b resist the urging force of the first and second torsion springs 16a and 16b. The first and second fixed glue guides 14 a and 14 b are gradually opened away from each other and moved to a position perpendicular to the surface of the roller 2.
[0031]
That is, since the glue 4 moves as the roller 2 rotates, the glue thickness adjusting member is operated to approach the roller surface against the biasing force of the torsion spring. When two identical torsion springs having the same direction of force are used, the first and second torsion springs 16a and 16b are attached to the glue thickness adjusting member because the glue that moves as the roller 2 rotates is applied to the glue thickness adjusting member. The direction of action is selected to be the same. For this reason, in the example of FIG. 1, the first torsion spring 16 a and the second torsion spring 16 b are attached to the positions of the opposite side surfaces of the roller 2.
[0032]
In the example of FIGS. 1 to 4, the glue thickness adjusting member is normally moved away from the roller surface by the biasing force of the torsion spring, and the glue thickness is adjusted by the action of the glue moving as the roller rotates. The member is moved to approach the roller surface, but other configurations are possible. For example, by appropriately setting the shape of the glue thickness adjusting member and the position at which the spring member is arranged, the spring thickness member is always moved in the direction of approaching the roller surface by the spring member, and the glue is adjusted as the roller rotates. It is also possible to change to a configuration in which the glue thickness adjusting member on the side where the amount of glue applied is not adjusted is moved in the direction away from the roller surface due to the action of moving the.
[0033]
FIG. 5 is a schematic perspective view showing another embodiment of the present invention. The same number is attached | subjected to the part same as FIG. In this example, the rotation shafts 10a and 10b for rotating the first and second adhesive thickness adjusting members 9a and 9b are driven by first and second motors 11 and 12, respectively.
[0034]
By driving the first and second motors 11 and 12, the first and second rotary shafts 10a and 10b are rotated, and the tip portions of the first and second glue thickness adjusting members 9a and 9b are glued rollers. 2 moves in a direction approaching or separating from the surface (directions P and Q in the figure). The first and second adhesive thickness adjusting members 9a and 9b move in a direction approaching the surface of the roller 2 in accordance with the rotation direction of the roller 2, and the other moves in a direction away from the surface of the roller 2. Let In the case of this example as well, it is applied to the back surface of the sheet bundle by moving in the direction in which one of the glue thickness adjusting members 9a and 9b approaches the surface of the roller 2 as in the examples of FIGS. Adjust the thickness of the glue.
[0035]
In the example of FIG. 5, the rotating shaft for rotation of the glue thickness adjusting member is driven using the driving force of the motor. However, the application of such an electric driving force is not limited to the motor, but an electromagnetic solenoid. It is also possible to adopt a configuration using. In this case, one glue thickness adjusting member is moved in the direction of approaching the roller surface by the electromagnetic solenoid in accordance with the rotation of the roller, and the other glue thickness adjusting member is moved in a direction away from the roller surface. When the glue thickness adjusting member is made to approach and separate from the roller surface by such an electric driving force using a motor or an electromagnetic solenoid, the glue thickness adjusting member can be reliably operated.
[0036]
In the example of FIGS. 1 to 4, the glue thickness adjusting members disposed on both sides in the vicinity of the roller are all configured to be driven using the biasing force of the spring and the action of glue moving by the rotation of the roller. In this example, each glue thickness adjusting member is driven using an electric driving force, but the present invention is not limited to such a configuration. One of the glue thickness adjusting members is driven using the biasing force of the spring and the action of glue moving by the rotation of the roller, and the other glue thickness adjusting member is driven using the electric driving force to It is also possible to adopt a configuration in which the glue thickness adjusting members arranged on both sides are driven by different driving means.
[0037]
In the example described above, one roller 2 is arranged in the container 3, and the first and second adhesive thickness adjusting members 9a, 9a, 9b are provided on both the front side and the rear side with respect to the sheet bundle transfer direction of the roller 2. 9b is installed, but pre-processing and post-processing rollers are placed in the container 3, and a single or multiple glue thickness adjusting member is installed for each roller, and applied to the back of the sheet bundle. It is also possible to adjust the thickness of the glue to be adjusted. Next, a gluing device having such a configuration will be described with reference to a schematic front view of still another embodiment of the present invention shown in FIG.
[0038]
The example shown in FIG. 6 is a modification of the embodiment in which the glue thickness adjusting member described in FIG. 5 is moved closer to and away from the roller surface using the driving force of the motor. The same number is attached | subjected to the part which is the same as that of FIG. 5, or a corresponding part. In this example, two rollers, a pre-processing roller 2a and a post-processing roller 2b, are partly placed in the container 3 while being partially immersed in glue stored in the container.
[0039]
The pretreatment roller 2a is rotated only in the clockwise direction (indicated by the arrow S in the figure) when the driving force is transmitted by the motor 5a, the rotational drive sprocket 6a, the chain 7a, and the driven sprocket 8a. Further, the post-processing roller 2b receives driving force from the motor 5b, the rotational drive sprocket 6b, the chain 7b, and the driven sprocket 8b, and switches the rotational direction of the motor 5b to rotate in the clockwise direction (direction S in the figure). ) And a counterclockwise direction (in the direction of arrow G in the figure).
[0040]
A single glue thickness adjusting member 9 is installed on the pretreatment roller 2a at a position on the front side with respect to the transport direction of the sheet bundle (the Z direction in the figure). Further, the post-processing roller 2b includes first and second adhesive thickness adjusting members 9a, 9a on the front side and the rear side with respect to the sheet bundle transport direction (in the direction of arrow Z in the figure). 9b is installed. The adhesive thickness adjusting members 9, 9a, 9b are respectively attached to rotary shafts 10, 10a, 10b driven by motors.
[0041]
Of the two rollers arranged side by side, the post-processing roller 2b can switch the rotation direction between the clockwise direction and the counterclockwise direction, so the combinations of the rotation directions of the two rollers are as follows: become.
(1) The pretreatment roller 2a is selected in the clockwise direction, and the posttreatment roller 2b is selected in the clockwise direction.
(2) The preprocessing roller 2a is selected in the clockwise direction, and the postprocessing roller 2b is selected in the counterclockwise direction.
[0042]
When the above (1) is selected, the pretreatment roller 2a is rotated in the clockwise direction, an excess amount of glue is scraped off by the glue thickness adjusting member 9, and an appropriate amount of glue is placed on the back of the sheet bundle. 4 is applied thinly. At this time, since the paste 4 is heated to an appropriate temperature, the back surface of the sheet bundle to which the paste 4 is adhered is also heated, and the temperature rises, so that pretreatment is performed so that the pasting is improved.
[0043]
Next, when the back surface of the sheet bundle is transferred to the position of the post-processing roller 2b, an excessive amount is scraped off by the first glue thickness adjusting member 9a on the back surface of the sheet bundle, and the glue 4 is thinned by the roller 2b. Applied. The back of the sheet bundle has already been pretreated by thinly applying the glue heated by the pretreatment roller 2a, and by further applying the glue 4 further thinly from the posttreatment roller 2b, The glue 4 supplied to the sticker is improved, and a reliable gluing process can be performed.
[0044]
When (2) is selected as the rotation direction of the two rollers 2a and 2b for pre-processing and post-processing, the gluing processing by the pre-processing roller 2a is as described above. Next, when the back surface of the sheet bundle is transferred to the position of the post-processing roller 2b, the second glue thickness adjusting member 9b is formed on the back surface of the sheet bundle by the rotation of the post-processing roller 2b in the counterclockwise direction. Thus, the glue 4 scraped off an excessive amount is applied so as to enter the back surface of each sheet from the direction opposite to the transport direction of the sheet bundle. The glue heated by the pre-processing roller 2a has already been thinly applied to the back of the sheet bundle and pre-processed. When the glue 4 is applied from the post-processing roller 2b, it is applied to the back of the sheet bundle. As a result, it is possible to perform a reliable gluing process.
[0045]
FIG. 6 shows an example in which the glue thickness adjusting members 9, 9a, 9b are respectively attached to the rotary shafts 10, 10a, 10b driven by a motor, but the glue thickness adjusting members 9, 9a, 9b are shown in FIGS. As described with reference to FIG. 4, the roller surface can be moved closer to and away from the roller surface by the action of the glue moving by the rotation of the roller and the biasing force of the spring. Alternatively, each glue thickness adjusting member may be driven by a combination of an electric driving force, an action of the glue moving by the rotation of the roller, and a biasing force of the spring.
[0046]
Furthermore, although the example of FIG. 6 is an example in which two rollers are arranged in the container, it is also possible to adopt a configuration in which an arbitrary number of plural rollers are installed according to the paper quality, thickness, etc. of the sheet bundle. .
[0047]
【The invention's effect】
As described above, in the present invention, even if the rotation direction of the roller is changed, the thickness of the glue applied to the back surface of the sheet bundle can be adjusted accordingly. Thus, a sheet binding gluing device that can respond to diversified user demands can be obtained.
[0048]
Also, pre-processing and post-processing rollers are juxtaposed in the container, and glue preheated by the pre-processing rollers is supplied to the back of the sheet bundle, and then glue is applied by the post-processing rollers. Since it is configured to perform the gluing process, the gluing process is performed twice, and the gluing can be reliably applied to the back surface of the sheet bundle. Furthermore, an appropriate amount of glue can be applied to the back surface of the sheet bundle by selecting the rotation direction of the roller.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view of a sheet binding gluing device according to an embodiment of the present invention.
2 is a cross-sectional view of the container shown in FIG. 1 when the roller is stationary, as viewed from the side where the side wall is removed. FIG.
FIG. 3 is a cross-sectional view of the container shown in FIG. 1 as seen from the side with the side wall removed when the roller rotates counterclockwise.
4 is a cross-sectional view of the container shown in FIG. 1 as viewed from the side with the side wall removed when the roller rotates in the clockwise direction. FIG.
FIG. 5 is a schematic perspective view of a paper binding gluing device according to another embodiment of the present invention.
FIG. 6 is a schematic front view of a paper binding gluing device according to another embodiment of the present invention.
FIG. 7 is a schematic front view of a conventional sheet binding gluing device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Gluing apparatus 2 Roller 3 Container 4 Glue 5 Motor 6 Rotation drive sprocket 7 Chain 8 Driven sprocket 9a, 9b 1st, 2nd glue thickness adjustment member 10a, 10b 1st, 2nd drive shaft 11, 12 1st, 2nd Second motors 13a and 13b First and second support rods 14a and 14b First and second fixing glue guides 15a and 15b First and second fixing tools 16a and 16b First and second torsion springs 17a, 17b First and second mounting frames 18 Roller rotation shaft

Claims (4)

A part of the glue stored in the container is soaked in a roller, and the glue in the container is applied to the back of the sheet bundle while rotating, and the glue attached to the roller located on the back of the sheet bundle. In the gluing device for binding sheets, which is provided with a glue thickness adjusting member capable of adjusting the thickness of the roller and approaching and separating from the roller surface, the glue thickness adjusting member is arranged at both positions close to the roller. A paper binding gluing device characterized by that. At least one of the glue thickness adjusting members is provided with an urging force by a spring, and the glue thickness adjusting member is driven against the urging force of the spring by glue that moves as the roller rotates. Item 2. The sheet binding gluing device according to Item 1. 2. The sheet binding gluing device according to claim 1, wherein at least one of the glue thickness adjusting members is driven by using an electric driving force. Pre-treatment and post-treatment rollers that apply the glue in the container to the back of the sheet bundle while rotating are partly placed in the glue contained in the container, and the pre-treatment roller is in one direction The direction of rotation is set only for the roller and a single glue thickness adjusting member is provided at a position close to the roller, and the glue thickness adjusting member is moved so as to approach the roller surface and applied to the back surface of the sheet bundle. The post-processing roller can be rotated in both the clockwise and counterclockwise directions, and adhesive thickness adjusting members are provided on both sides close to the roller. In accordance with the set rotation direction of the roller, one glue thickness adjusting member is moved in a direction approaching the surface of the roller to adjust the latter stage of the amount of glue applied to the back surface of the sheet bundle. A sheet binding gluing device characterized by the above.

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