JP2001130166A - Method and device for applying paste, gluing bookbinder and image forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paste applying device and a gluing bookbinder of superior operation properties, in which a paste feed means and a paste discharge means of the paste applying device and a pasting bookbinder are improved, the improvement of the bookbinding finishing quality for image processed paper bundles is achieved and the compactness and simplicity of the device is realized. SOLUTION: The glue applying device is provide with a bag-shaped container 82 having a discharge opening on one end and storing a paste, a press means for discharging the stored paste out of the glue discharge opening by pressing the bag-shaped container 82, a feed tube 81 feeding the paste discharged out of the book-shaped container 82 and a discharge means 37 accepting the paste fed from the feed tube 81 and discharging the same.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glue applying method for applying a glue in the form of a band to the vicinity of a side edge of a paper while the paper is being conveyed, and binding the image-formed paper discharged from the image forming apparatus. The present invention relates to a glue applying device, a glue binding device provided with a glue applying device, and an image forming device provided with a glue binding device.

[0002]

2. Description of the Related Art In recent years, there has been provided a glue binding apparatus which performs a gluing process on a predetermined position of a sheet on which an image is recorded by an image forming apparatus such as a copying machine, a printer, or a multifunction machine of the above to perform bookbinding. .

[0003] As a gluing processing device, (1) a device for discharging glue on paper using a glue discharge nozzle, (2) a glue wheel is set in a glue storage box, and glue is attached to the outer periphery of the rotating glue wheel. Device that makes the outer periphery of the glue wheel contact the paper to transfer
(3) A hot melt coating device that discharges a mixture of hot melt and heated compressed air from a nozzle is used.

Further, as a device for supplying the glue in the glue storage container to the glue discharge nozzle, a device for pressure-feeding the glue in the storage container by compressed air from an air compressor, and a glue in the storage container by a micro gear pump. An apparatus or the like is used.

[0005] The adhesive supply device described in Japanese Patent Publication No. 59-500907 discloses a method of supplying pressurized air or other gas to a space above the liquid level of an adhesive in a cartridge containing the adhesive. And pressurized.

The gluing apparatus described in Japanese Patent Application Laid-Open No. 7-80377 sucks the glue contained in the glue tank with a pump and pressurizes the supplied glue to make the glue suitable for the glue discharge nozzle. Pressurization is performed by compressed air sent from a compressed air source.

[0007]

The above-mentioned glue applying apparatus and glue binding apparatus have the following problems.

(1) A device for feeding the glue in the storage container to the glue discharge nozzle by compressed air by an air compressor or a device for feeding the glue in the storage container by a microgear pump becomes large in size. There is a problem that noise is sometimes generated.

(2) In the glue coating apparatus provided with a nozzle member having an opening for discharging glue and a needle member for moving the nozzle member so as to be able to open and close the opening, the nozzle member Since the tip of the opening is in contact with the air layer, the glue solidifies to cause poor coating. If a cap member, a cleaning member, and the like are provided to prevent the solidification of the glue, the device becomes complicated and large.

The present invention solves the above-mentioned problems and improves the glue supply means and the glue discharge means of the glue applying apparatus and the glue binding apparatus, thereby forming an image-processed sheet bundle by uniform and reliable glue application. A glue coating device that achieves improved finish quality and achieves miniaturization and simplification of the device, and excellent operability.
An object of the present invention is to provide a glue binding apparatus and an image forming apparatus.

[0011]

(1) A glue coating method according to the present invention for solving the above-mentioned problem is to press a replaceable bag-like container accommodating glue by a pressing means, and to paste the glue in the bag-like container. Is supplied to the discharge means, and the paste discharged from the discharge means is applied to the traveling paper (claim 1).

(2) The glue applying device of the present invention has a bag-like container having a discharge opening at one end and containing the glue, and discharges the paste contained therein by pressing the bag-like container from the discharge opening. It is characterized by comprising a pressing means and a discharge means for receiving the paste discharged from the bag-shaped container and discharging the paste from the opening of the nozzle member (claim 2).

(3) The glue binding apparatus of the present invention has a bag-shaped container having a discharge opening at one end and containing the paste, and the paste enclosed by pressing the bag-shaped container is discharged from the discharge opening. Pressing means, a supply pipe for feeding the glue discharged from the bag-shaped container, a discharge means for discharging the glue fed from the supply pipe, a transport means for transporting a sheet, and the discharge means Control means for controlling the opening and closing of the sheet to continuously or intermittently apply the glue to a predetermined position of the running paper (claim 9).

(4) The glue applying apparatus of the present invention has a pressure chamber for containing the glue supplied by pressurizing from the storage container, and an opening provided at one end of the pressure chamber for discharging the glue. A glue applicator including a nozzle member, a needle member that moves the opening of the nozzle member so as to be able to open and close, and a driving unit that drives the needle member. The front end portion forms the same surface or a protruding surface with respect to the front end portion of the opening of the nozzle member (claim 10).

(5) A glue binding apparatus according to the present invention travels by controlling the glue applying apparatus described in (4) above, transport means for transporting the paper, and opening and closing of an opening of a nozzle member of the discharge means. Control means for linearly applying the glue to a predetermined position of the paper to be processed; storage means for aligning and storing the glued paper; and pressurizing means for pressing the upper surfaces of the aligned plurality of paper sheets (Claim 14).

(6) The image forming apparatus according to the present invention includes the glue coating device described in (2) and (4) above, and (3)
A glue binding apparatus according to (5) is provided (claim 15).

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a glue applying apparatus, a glue binding apparatus and an image forming apparatus equipped with a glue binding apparatus according to the present invention will be described with reference to the drawings.

FIG. 1 is an overall configuration diagram of an image forming system including an image forming apparatus A, an automatic document feeder ADF, and a glue binding apparatus B.

The illustrated image forming apparatus A includes an image reading unit 1, an image processing unit 2, an image writing unit 3, an image forming unit 4, a paper feeding unit 5, a conveying unit 6, a fixing unit 7, a re-conveying unit (automatic double-sided A copy transport unit (ADU) 8 and control means 9 are provided.

The paper supply means 5 comprises a cassette paper supply section 5A, a large capacity paper supply section (LCT) 5B, a manual paper supply section 5C, an intermediate paper supply roller 5D, and a registration roller 5E.

The transport means 6 includes a transport belt 6A, a transport path switching plate 6B, a discharge roller 6C, and the like.

An automatic document feeder ADF is mounted above the image forming apparatus A. A glue binding apparatus B is connected to the paper discharge roller 6C on the left side of the image forming apparatus A in the figure.

The document d placed on the document table of the automatic document feeder ADF is conveyed in the direction of the arrow and is read by the image reading means 1.
The image on one side or both sides of the original is read by the optical system described above, and is read into the CCD image sensor 1A.

The analog signal photoelectrically converted by the CCD image sensor 1A is subjected to analog processing, A / D conversion, shading correction, image compression processing and the like in the image processing means 2 and then sent to the image writing means 3. .

In the image writing means 3, the output light from the semiconductor laser is applied to the photosensitive drum of the image forming means 4 to form a latent image. In the image forming means 4,
Processing such as charging, exposure, development, transfer, separation, and cleaning is performed. An image is transferred to the sheet S sent from the sheet feeding unit 5 in a transfer unit.

The paper S carrying the image is transported by the transport belt 6A.
, And is fixed by the fixing unit 7, and is sent from the paper discharge roller 6 </ b> C to the receiving unit 11 of the glue binding apparatus B. Alternatively, the single-sided image-processed sheet S sent to the re-conveying unit 8 by the conveying path switching plate 6B is again subjected to the double-sided image processing by the image forming unit 4 and then to the discharge rollers 6C
Is discharged from Paper S discharged from paper discharge roller 6C
Is sent to the receiving section 11 of the glue binding apparatus B.

In the glue binding apparatus B, the sheet discharging unit 10, the pressure roller unit 20, the glue applying unit 30, the sheet direction changing unit 40, the cover sheet feeding unit 50, and the folding machine 60 are arranged in a substantially vertical Arranged in tandem.

A fixed discharge tray 71 is arranged above the glue binding apparatus B in the figure. Further, on the left side in the drawing of the glue binding apparatus B, an elevating sheet discharge tray 72 for stacking the glued bookbinding is arranged.

FIG. 2 is a schematic diagram showing a paper transport path of the glue binding apparatus B. FIG. 3 is a schematic diagram showing a process of gluing and binding to paper.

The glue binding apparatus B is installed with its position and height adjusted so that the receiving section 11 of the sheet S carried out from the image forming apparatus A coincides with the discharge roller 6C of the image forming apparatus A.

The transport path of the sheet S connected to the receiving section 11 is branched into a transport path 12 to the uppermost direct discharge section 10 and a transport path 14 below, and selects an angle occupied by the switching gate G1. The sheet S is fed to one of the transport paths.

The transport path of the sheet S connected to the transport path 14 is
The entrance conveyance path 41 leading to the middle sheet direction conversion unit 40 and the glue application unit 30 and the entrance conveyance path 6 leading to the lowermost folding machine 60.
The paper S is fed to one of the transport paths depending on the selection of the angle occupied by the switching gate G2.

(1) Direct discharge to the fixed discharge tray 71 at the top of the apparatus (direct discharge unit 10) Sheet S on which an image has been formed and discharged from the image forming apparatus A
Is discharged to a receiving tray 11, passes through a transport path 12, is pinched by a discharge roller 13, is discharged onto a fixed discharge tray 71 at an upper portion outside the apparatus, and is sequentially stacked.

In the paper transport process, the switching gate G
1 is swung by the drive of the solenoid SD1, and
4 is closed and the transport path 12 is opened so that the paper S can pass through the fixed paper discharge tray 71.

(2) Sheet 90 ° Rotation Processing (Sheet Direction Conversion Unit 40) When this rotation mode is set, the switching gate G2 closes the entrance conveyance path 61 with the solenoid SD2 turned off, and the entrance conveyance is performed. The path 41 is kept open so that the paper S can pass through the entrance conveyance path 41.

The image-formed sheet S discharged from the image forming apparatus A passes through the receiving section 11, the transport path 14, and the rotating transport roller 15, and is formed by the switching gate G2 into an open transport path 41. , And is nipped by the transport rollers 42, and further transport rollers 43, 44, 4
5 and 46, and travels in the left direction shown by the arrow in the figure.

When the central portion of the sheet S reaches the sheet direction changing means 47, the sheet conveyance is temporarily stopped, and the conveyance rollers 43,
The pressure contact of 44, 45, and 46 is released, and the separated state is maintained. With the conveying rollers 43, 44, 45 and 46 released from pressure contact, the upper and lower rotating disks 47
A and 47B pinch the paper S and rotate, so that the direction of the paper S is changed by 90 °. For example, A4 size paper S is converted by the paper direction conversion unit 47 into the A4R direction.

The sheet S subjected to the direction change processing is conveyed by the rotation of the conveying rollers 43, 44, 45, 46, and 48 under pressure, passes through the switching gate G3, and passes through the glue applying section 3 on the upper side.
It is sent to 0.

Alternatively, by driving the solenoid SD3, the paper S passes through the transport path below the switching gate G3 and is discharged by the discharge rollers 49 to the elevating discharge tray 72 outside the machine or a discharge tray (not shown). Is done.

(3) Glue coating process on paper S (glue coating unit 3
0) The sheet S sent from the sheet direction conversion unit 40 to the glue application unit 30 is nipped by the conveyance rollers 31 to 35 and advances rightward as indicated by the arrow in the figure.

The aligning means 36 aligns the paper S before the glue application processing on one side. The discharging unit 37 stores the glue supplied from a bag-shaped container described later, and discharges the glue to one side edge of the running paper in a band shape or in an intermittent wavy shape.

The sheet S that has been subjected to the glue application process rises along the transport path 38, is sandwiched by the discharge rollers 39, and is discharged to the pressure roller unit 20.

(4) Pressing Process (Pressing Roller Unit 20) The first sheet S not subjected to the glue coating process is sandwiched by gripper means (not shown) and placed at a predetermined position on the stacker 21. The second and subsequent sheets S that have been glued
Are similarly sandwiched by the gripper means, and are sequentially placed on the preceding paper S on the stacker 21 with the glue application section on the lower side. Reference numeral 24 denotes a pair of width alignment members movable in the width direction, and regulates the width direction of the sheet S.

Above the stacker 21, there is provided a guide bar 22 which is parallel to the sheet mounting surface of the stacker 21. The pressure roller member 23 slides back and forth along the guide bar 22. The roller 23A, which is spring-biased by the guide bar 22, is pressed against the back side of the glue application portion of the sheet S on the stacker 21 and moves to ensure the adhesion between the sheets.

The pressing of the sheet S by the pressing roller member 23 may be performed each time the sheet S is placed on the stacker 21. Alternatively, the pressing process may be performed each time a plurality of sheets S are stacked.

A plurality of discharge belts 27 wound around a driving roller 25 and a driven roller 26 are rotatably disposed on a part of the sheet stacking surface of the stacker 21.

The sheet bundle of the last sheet S is stacked on the stacker 21, pressed, and glued and bound, and the trailing end of the sheet bundle is held by the discharge claw 27 a of the discharge belt 27. The paper is slid on the mounting surface of the stacker 21, discharged onto the elevating paper discharge tray 72, and stacked.

(5) Cover Processing (Cover Paper Feeding Section 50) The cover paper feeding section 50 includes a paper feeding cassette 51, a paper feeding member 52,
The paper feed path 53 includes a registration roller 54. One cover sheet K fed from the paper feed cassette 51 is
The sheet passes through the sheet feeding path 53 and the registration roller 54 and joins the conveyance roller 42, and the sheet direction changing unit 40, the glue applying unit 30,
In the pressure roller section 20, the sheet bundle is stacked on the upper surface or the lower surface of the above-mentioned sheet bundle and subjected to glue binding.

(6) Folding process The sheet S conveyed downward from the entrance conveying path 61 as shown in FIG.
In the folding machine 60, after the two-fold processing or the Z-fold processing, the paper is discharged from the outlet conveyance path 62, passes through the registration roller 54, merges with the conveyance roller 42, and is subjected to the sheet direction conversion unit 40, the glue application unit 30, Gluing and binding are performed in the pressure roller unit 20.

FIG. 4A is a plan view showing the vicinity of the discharging means of the glue applying section 30, FIG. 4B is a front view showing the vicinity of the discharging means of the glue applying section 30, and FIG. .

A discharge means 37 is fixedly arranged at a predetermined position near the side edge of the sheet S in the width direction between the conveying rollers 34 and 35. The ejection means 37 includes a nozzle member 371,
It comprises a supply member 372, a solenoid valve 373, an adjustment member 374, a needle member 375, and an inlet member 376.

The inner diameter of the tip of the nozzle member 371 has a tapered conical shape, and the tip of the nozzle 371 has a small-diameter opening 371.
a.

An elongated needle member 375 is movably inserted into the inner diameter portion of the nozzle member 371. The distal end of the needle member 375 has a tapered shape, and can open and close the small-diameter opening 371 a at the tip of the nozzle member 371.

The rear end of the nozzle member 371 is
72 and integrated therewith. The inside of the supply member 372 is formed in a hollow pressure chamber 372a, and is filled with glue for bonding paper.

An inlet 372 is provided on the side of the supply member 372.
b is open and connected to the inlet member 376. The glue for adhering the paper accommodated in the bag-shaped container described later is pressure-fed by the pressing means described later, and is supplied through the supply pipe to the entrance member 37.
6. Pressure chamber 372 of supply member 372 from introduction port 372b
a.

The glue contained in the pressure chamber 372a is discharged from the opening 371a of the nozzle member 371 by the needle member 375 protruded by the operation of the solenoid valve 373.

FIG. 6 is an enlarged sectional view of each tip of the nozzle member 371 and the needle member 375.

FIG. 6A shows a conventional example. Nozzle member 3
The inner diameter of the tip of 71 has a tapered conical shape, and the tip is formed in a small-diameter opening 371a. The distal end of the needle member 375 has a tapered conical shape, and comes into contact with the conical portion on the inner surface of the nozzle member 371 at the shielding portion a. In the shielding part a, the pressure chamber 372a and the opening 371a are shut off, and the glue in the pressure chamber 372a is not discharged.

In this shielded state, the inner diameter portion on the outlet side from the shield portion a, that is, the illustrated tip space portion b of the inner diameter portion of the tip portion of the nozzle member 371 comes into contact with the outside air, and the glue adhered thereto solidifies. As a result, when the needle member 375 operates, a discharge failure of glue occurs.

FIGS. 6B and 6C are cross-sectional views showing an embodiment of the present invention. The distal end of the needle member 375 has a tapered conical shape, and the distal end thereof has an elongated shape.

FIG. 6B shows a state in which the inner diameter of the opening 371 a of the nozzle member 371 is fitted to the distal end of the needle member 375 and is closed. Since the inner diameter of the opening 371a of the nozzle member 371 is fitted to the most distal end of the needle member 375 and is in a closed state, it does not come into contact with the outside air and the glue does not solidify. Further, even if the tip of the nozzle member 371 is solidified by dripping or the like, the solidified glue can be removed by driving the solenoid valve 373 on and off to move the needle member 375 back and forth. .

FIG. 6C shows a state where the needle member 375 is at the retracted position. In this state, glue is supplied from the pressure chamber 372a to the opening 371a.

FIGS. 6D and 6E are cross-sectional views showing another embodiment of the present invention. The distal end of the needle member 377 has a tapered conical shape, and the distal end has an extended shape longer than the distal end of the needle member 375.

FIG. 6D shows a state in which the inner diameter of the opening 371 a of the nozzle member 371 is fitted to the most distal end of the needle member 377 and is closed. The tip end of the needle member 377 projects from the tip of the opening 371a of the nozzle member 371 to form a tip projection c.

Since the inner diameter of the opening 371a of the nozzle member 371 is fitted to the foremost part of the needle member 377 and is in a closed state, it does not come into contact with outside air and the glue does not solidify. . Also, even if the tip of the nozzle member 371 is solidified due to dripping or the like, the solenoid valve 373 is turned on and off to move the needle member 377 back and forth, whereby the protruding tip end of the protruding needle member 377 is solidified. The glue removed is removed.

FIG. 6E shows a state where the needle member 377 is at the retracted position. In this state, glue is supplied from the pressure chamber 372a to the opening 371a.

The opening 371a of the nozzle member 371
The driving of the needle member 377 in the forward and backward directions for preventing the solidification of the paste is performed before the start of the paste on the sheet S, and the solidified paste and the paste discharged at the same time are stored in the lower collecting container.

The needle member 3 for preventing the solidification of the paste
The forward / backward drive frequency of 77 and the forward / backward stroke length are as follows:
The optimum conditions are set according to the tip of the nozzle member 371, the specifications of the tip of the needle member 377, the properties of the glue, and the like.

The glue used in the embodiment of the present invention is a water-soluble vinyl acetate adhesive having a viscosity of 750 to 15 at room temperature.
00 cps.

FIG. 7 is a cross-sectional view of a glue supply section comprising a bag-like container 82 for containing glue and a pressing means for pressing the bag-like container 82 to discharge the glue contained therein.

The bag-like container 82 for storing the glue includes a flexible bag 821, a base member 822 having a discharge opening, and an on-off valve 823. The bag-shaped container 82 is exchangeably installed at a predetermined position of the housing 80.

The pressing means is arranged in a V-shape and has a set of symmetric pressing members 83A and 83B, a set of meshing gears 84A and 84B, and a pressurizing means for connecting and pressing the pressing member 83A. And a member 86.

The base of the pressing member 83A, the center of the gear 84A and the rotary shaft 85A are formed integrally, and are rotatably supported on the side wall of the housing 80. The base of the pressing member 83B, the center of the gear 84B, and the rotation shaft 85B are formed integrally, and are rotatably supported on the side wall of the housing 80.

The pressing member 86 is composed of a pneumatic device such as a gas spring, and the tip of the reciprocating arm 86a is connected to the pressing member 83A via a joint 86b. The arm 86a presses the pressing member 83A by the pressing load P of the pressing member 86. The pressing member 83A swings about the rotation shaft 85A in the direction of the arrow shown in the figure.

The swing of the pressing member 83A causes the pressing member 8 to move.
The gear 84A that is integral with 3A rotates the gear 84B that meshes. The rotation of the gear 84B causes the pressing member 83B
Is pivoted about the rotation shaft 85B in the direction indicated by the arrow.

When the V-shaped pressing members 83A and 83B swing, the flexible bag 821 of the bag-like container 82 is moved.
Is compressed from above and below, and the contained glue is
22 and is discharged from the on-off valve 823 through the discharge opening 22.
The liquid is supplied into the pressure chamber 372a of the discharge means 37 through the supply pipe 81.

FIG. 8 is a schematic diagram showing a glue binding process.
FIG. 3 is a block diagram illustrating control of the glue binding apparatus.

The sheets S aligned on one side by the aligning means 36
Is transported by the transport rollers 34 and advances to the glue application section. The leading edge of the sheet S is a sheet leading edge detection sensor PS1
Is detected, the discharge of the glue by the discharge means 37 is started after a lapse of a predetermined time from the generation of the detection signal. That is, the control means 9 controls the electromagnetic valve 373 of the discharge means 37.
Command.

The control of the glue discharge time by the discharge means 37 is determined by the length of the paper S in the transport direction and the paper transport speed by the transport rollers.

The control means 9 is provided with a sensor PS for the sheet S.
Prior to one pass, the electromagnetic valve 373 of the discharge means 37 is operated to appropriately remove the glue solidified at the tip of the nozzle member 371.

The shape of the paste applied on the sheet S by the ejection means 37 may be a continuous linear shape or a discontinuous wavy line shape.
Alternatively, when the sheet S has been subjected to the perforation processing, the adhesive is discharged in an intermittent linear shape avoiding the holes. The variable control of the glue discharge is performed by turning on and off the solenoid valve by the control means 9.

The number of openings 371a of the nozzle member 371 of the discharge means 37 is not limited to one. It is also possible to form a plurality of application lines by providing a plurality of openings 371a and simultaneously discharging glue from a plurality of locations.

Further, a plurality of the ejection means 37 are arranged,
A plurality of application lines can be formed by simultaneously discharging the paste from a plurality of locations.

The glue binding apparatus of the present invention is connected to an image forming apparatus such as a copying machine, a printer, or a multifunction machine of these.
After the desired digital processing is performed by the image forming apparatus, and after the processing such as single-sided recording, double-sided recording, and page editing, the discharged paper is subjected to cover-covering and gluing processing by the image forming apparatus equipped with the glue binding apparatus of the present invention. Is performed accurately and efficiently,
It is bound.

It is also possible to form the glue binding apparatus of the present invention as an independent apparatus, and to glue and bind a sheet bundle processed and page-aligned by another image forming apparatus.

[0086]

As is apparent from the above description, the following effects can be obtained by the glue applying method, the glue applying apparatus and the glue binding apparatus of the present invention. (1) The glue coating method according to claim 1 of the present invention, claim 2
The glue applying device according to any one of (8) to (8) and the glue binding device according to claim 9 allow a constant amount of glue applying process at the time of glue binding, irrespective of a change in viscosity of the glue due to an environmental change. In addition, since the glue is stored in a replaceable bag-shaped container, the operation of refilling the glue is simple and easy, and the operability and the maintainability are excellent. Further, since air and foreign matter do not enter the glue storage container, the applicability of the glue is improved. Further, the control of the amount of glue discharged is easy and reliable. Further, since the glue supply device does not use a driving device such as a motor, noise is reduced. (2) The glue coating device according to claims 10 to 13 of the present invention,
According to the glue binding apparatus according to claim 14, since the opening at the tip end of the nozzle member of the glue discharging means does not come into contact with the outside air, the glue in the opening is solidified and the glue is not clogged. The paste can be controlled and discharged.
Further, even if the glue solidifies at the tip of the nozzle member due to the dripping of the glue, the glue solidified by the ON / OFF drive of the needle member can be easily and quickly removed. (3) The image forming apparatus provided with the glue binding apparatus according to claim 15 of the present invention accurately and efficiently performs cover attaching and gluing processing on a plurality of sheets on which images are formed and sequentially discharged, Bookbinding can be performed efficiently.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of an image forming system including an image forming apparatus, an automatic document feeder, and a glue binding apparatus.

FIG. 2 is a schematic diagram illustrating a paper transport path of the glue binding apparatus.

FIG. 3 is a schematic diagram showing a process of gluing and binding to paper.

FIG. 4 is a partial plan view of the glue application unit and a partial front view of the glue application unit.

FIG. 5 is a sectional view of a discharge unit.

FIG. 6 is an enlarged cross-sectional view of each tip of a nozzle member and a needle member.

FIG. 7 is a cross-sectional view of a glue supply unit including a bag-like container and a pressing unit.

FIG. 8 is a schematic view showing a glue binding process.

FIG. 9 is a block diagram illustrating control of the glue binding apparatus.

[Explanation of symbols]

 Reference Signs List 9 control means 20 pressure roller section 30 glue application section 31, 32, 33, 34, 35 transport roller 36 alignment means 37 discharge means 371 nozzle member 371a opening 372 supply member 372a pressure chamber 372b inlet 373 electromagnetic valve 374 adjustment member 375,377 Needle member 376 Entrance member 40 Paper direction conversion unit 47 Paper direction conversion unit 50 Cover paper feeding unit 60 Folding machine 80 Housing 81 Supply pipe 82 Bag-shaped container 821 Flexible bag 822 Base member 823 Open / close valve 83A , 83B Pressing member 84A, 84B Gear 85A, 85B Rotating shaft 86 Pressing member A Image forming device B Glue binding device K Cover PS1 Paper leading edge passage detection sensor S Paper (sheet bundle) a Shielding portion b Tip space c Leading edge Part d manuscript

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3F108 GA02 GA04 GB01 HA02 HA13 4D075 AC06 AC84 AC92 AC95 CA47 DA04 DB18 DC27 EA35 4F041 AA02 AB01 BA05 BA10 BA12 BA34 4F042 AA02 AA27 BA02 BA06 BA25 CA01 CB03

Claims (15)

[Claims] 1. An exchangeable bag-like container accommodating paste is pressed by a pressing means to supply the paste in the bag-like container to a discharge means, and the paste discharged from the discharge means is applied to a traveling paper. A glue coating method. 2. A bag-shaped container having a discharge opening at one end and containing glue, pressing means for pressing the bag-shaped container to discharge the contained glue from the discharge opening, and And a discharge unit that receives the discharged paste and discharges the discharged paste from an opening of the nozzle member. 3. The glue coating device according to claim 2, wherein the bag-like container is exchangeably mounted on the discharge means. 4. The pressing device according to claim 2, wherein the pressing means includes a pressing member for holding and pressing the bag-shaped container, and a pressing member for applying a load to the pressing member. Glue coating device. 5. The glue application device according to claim 4, wherein the pressing member is a pneumatic device. 6. The pressing member includes a plurality of pressing plates that can swing while sandwiching the bag-like container, and a plurality of gears that are fixed to a rotating shaft that supports the pressing plate so as to be able to rock and mesh with each other. The glue coating device according to claim 4, wherein the other pressing plate is swingable in response to the swing of one pressing plate. 7. The glue coating apparatus according to claim 2, wherein the discharge means comprises a solenoid valve connected to the control means, and a nozzle member for discharging the glue contained by the operation of the solenoid valve. . 8. The glue applying apparatus according to claim 2, wherein the control unit controls the solenoid valve to turn on and off to control a discharge amount of the glue. 9. A bag-shaped container having a discharge opening at one end and containing glue, pressing means for pressing the bag-shaped container to discharge the contained glue from the discharge opening, and A supply pipe that feeds the discharged glue, a discharge unit that discharges the glue fed from the supply pipe, a transport unit that transports the paper, and a paper that travels by controlling the opening and closing of the discharge unit And a control unit for continuously or intermittently applying the glue to a predetermined position of the glue binding apparatus. 10. A nozzle member having a pressure chamber for storing glue supplied by pressurization from a storage container, a nozzle member provided at one end of the pressure chamber, and having an opening for discharging glue, and an opening of the nozzle member. A glue applicator provided with a discharging means having a needle member for opening and closing the part and a driving means for driving the needle member, wherein the tip of the needle member has an opening of the nozzle member. A glue coating device, wherein a same surface or a protruding surface is formed with respect to a tip portion of the portion. 11. The needle member is moved by turning on and off the driving means, and the gap between the inner surface of the opening of the nozzle member and the outer peripheral surface of the needle member is made variable,
The glue application device according to claim 10, wherein an amount of the glue discharged from the opening is controlled. 12. The glue applying device according to claim 10, wherein the driving unit is an electromagnetic valve. 13. The driving unit reciprocates the needle member in advance just before starting to discharge the paste from the opening of the nozzle member, and moves the needle member to the tip of the needle and the tip of the opening of the nozzle member. The glue coating device according to any one of claims 10 to 12, wherein solidified glue is removed. 14. A glue applying device according to claim 10, a transporting means for transporting the paper, and the glue at a predetermined position of the paper running by controlling opening and closing of an opening of a nozzle member of the discharging means. Control means for applying the paper in a straight line, storage means for aligning and storing the glued sheets, and pressurizing means for pressing the upper surfaces of the aligned plurality of sheets. Glue binding device. 15. An image forming apparatus comprising: the glue applying device according to claim 2; and the glue binding device according to claim 9 or 14.