JPS63112195A - Clamping device for bookbinding machine - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a clamping device for a bookbinding device, and in particular, when clamping a bound workpiece, the clamping operation of the bound workpiece can be easily achieved by simply rotating the handle. The present invention relates to a device configured to perform clamping and locking operations in a clamped state.

(Prior Art) Traditionally, bookbinding devices stack a large number of sheets such as sheets, attach covers, etc. to both sides, and insert or add pages such as tables and graphs between predetermined pages. Methods such as bookbinding are used. When performing this binding, there are many cases in which binding tape is used and adhesive is used to provide a good-looking bound product, without using methods such as stable binding. It's coming.

When binding a book using the above-mentioned bookbinding tape, the bookbinding tape is brought into contact with the spine of the bound product, and the hot melt adhesive layer formed in the center of the bookbinding tape is melted to form a sheet. At the same time, the ends of the sheets are adhered to each other, and the base paper of the bookbinding tape is adhered to each other.Furthermore, after the spine is adhered, the side seal portions are adhered.

When performing this operation, the bound work is held between both sides of the bound work by clamps, etc. without moving, and the work of adhering the bookbinding tape is performed with the clamps fixed. .

As the bookbinding machine mentioned above, for example,
Devices using mechanisms such as those disclosed in Japanese Utility Model Publication No. 16735 and Japanese Utility Model Publication No. 18216/1983 are known. In these devices, a cam member is used to move a suppressing member for clamping the bound work, and the binding tape is bonded while being held at a predetermined pressure.

Furthermore, in the example shown in Japanese Patent Publication No. 53-16735, a device with a complicated mechanism combining a link and a cam g device is used.
Japanese Patent No. 18216 discloses a device that uses a cam member rotated by a motor.

In addition, conventionally used general bookbinding devices automatically perform the operation by applying various mechanisms to clamp the bound work when clamping the bound work. There are many devices on the market that allow bookbinding operations to be performed easily.

An example of a conventionally used general bookbinding apparatus is shown in FIG. 8. In the apparatus shown in FIG. 8, the main body of the bookbinding machine is provided with clamps 5.5a for clamping the bound workpiece, and these pair of clamps 5.5a are moved so as to approach each other. The bound product 1 is held and positioned.

The lower part of the pair of clamps includes a bookbinding tape holding member formed by a tape guide 7.7a with substantially U-shaped holding portions facing each other, a heater 11.13, and a bookrest 15. A heater unit 10 is provided.

Then, the bound object is held between clamps, and the binding tape 17 is inserted into the binding tape holding section.The hot melt adhesive 19 of the binding tape 17 is heated and melted by one of the heaters, and then, as shown in FIG. As shown, the adhesive end of the bound object 16 is pressed toward the bookbinding tape 17, and while the adhesive surface is pressed against the bookrest 15, heating and pressing are performed from both sides by heaters 11 and 13, and a series of The bookbinding process consists of the following steps.

(Problems to be Solved by the Invention) In the conventionally used bookbinding apparatus as described above, a cam device or the like as described above is driven by a motor when clamping the bound work. In a bookbinding device that is configured to automatically clamp the bound workpiece, it takes a relatively long time, approximately 8 seconds, from when the start button is pressed until the end of clamping the bound workpiece. Furthermore, even when releasing the clamping of the bound book, it takes about 5 seconds, and it has the disadvantage that it takes a relatively long time before and after the bookbinding operation.

Furthermore, the bookbinding device with the above configuration has problems that need to be resolved, such as the inability to stop the operation midway when the start button is pressed in the event that some kind of procedural error occurs. have.

On the other hand, a manual clamping device having a configuration as shown in FIG. 10 has been developed.

This example is shown in Japanese Patent Application No. 61-103038, and in this device, the moving shaft 22 of the clamp 5a is slidably guided in a guide groove provided in the frame of the device body, and The shaft of the other clamp 5 is also slid on the frame in the same manner. By rotating the handle 2 in the direction of the arrow, the pair of clamps 5.5a are moved in a direction closer to each other via the wire 3, thereby clamping the bound workpiece.

Also, when the handle 2 is rotated, the clamp 5a
By meshing the pinion 23 on the shaft with the lower rack 24, 25, its stopping position is secured and the holding action of the clamp is maintained throughout the binding operation.

Further, when a series of bookbinding operations is completed, the handle 2 is rotated in the opposite direction, thereby moving the lower rack 25 to the right in the figure, the cam member 26 is moved II, and the upper rack 24 is swung. The shaft of the clamp is returned to its original position by the force of the spring, and the clamping operation of the bound product is released.
The bound book that has been bound can be easily taken out.

As mentioned above, in a device using a manual clamping device, it is possible to easily clamp a bound workpiece and release the clamping state simply by rotating the handle, and the time required for the clamping operation is greatly reduced. In addition to this, the clamping state can be immediately released when redoing the work.

However, when using the above-mentioned manual clamp equipment, if the thickness of the bound object changes, the position of the handle when fixed changes, and because the stopping position is not constant, it becomes a nuisance during the binding operation. It may become. In addition, when the handle is reversed to release the binding of the bound product, the binion and the rack slip, which causes an abnormal noise.

(Object of the Invention) The present invention eliminates the drawbacks of conventionally used devices as described above, and makes it possible to shorten the time required for clamping, maintain a constant stopping position of the handle, The purpose is to provide a bookbinding VL device that is easy to operate.

(Means and Effects for Solving the Problems) The clamping device of the bookbinding machine of the present invention clamps a plurality of sheets to form a bound book from both sides with clamps, and binds a belt-shaped book to the binding part. In a device configured to be thermally bonded using tape, the drive shaft that drives the clamp is provided with a gear provided via a one-way clutch and a gear directly connected to the shaft, and a gear coaxially connected to these gears is provided. A pulley for driving the clamps is provided, and a wire is used to move the pair of clamps in conjunction with each other in the direction of separation. A Geneva gear and a drive gear are provided to perform drive transmission, and the drive member of the handle shaft transmits the rotation of the handle to the drive shaft, so that the clamp can perform a clamping action on the bound workpiece and maintain the clamping state. This is a device that does this.

Therefore, in the clamping device of the bookbinding machine of the present invention, a bound workpiece can be held by the clamp simply by rotating the handle in one direction, and the rotation angle of the handle is limited by υ1 to the thickness of the bound workpiece. It is always rotated to a fixed position and then stopped.

Moreover, when releasing the clamping of the bound product, it is sufficient to simply rotate the handle in the opposite direction, and no abnormal noise is generated when the handle is released.

Furthermore, in the bookbinding-like clamping device of the present invention, a grooved cam provided on the handle shaft sets the rotating end of the handle, maintains the clamping state of the bound work, and maintains the clamp in the released state. , the drive gear mainly drives the drive shaft. After the workpiece is clamped between the clamps, the Geneva gear is further rotated to automatically lock the clamp and set the stop position of the handle, making the operation easy. It becomes something that can be done.

(Example) The configuration of the clamping device of the bookbinding machine of the present invention will be described according to the illustrated example.

FIG. 1 shows a bookbinding apparatus to which the clamping device of the bookbinding apparatus of the present invention is applied. In this bookbinding apparatus, a handle 30 is rotatably provided at a predetermined position at an end of the main body 1 of the bookbinding apparatus.

Further, a gear device provided on the shaft 31 of the handle 30,
meshing with a gear device provided on the drive shaft 60;
A pair of clamps 5.5a are moved in conjunction with each other in directions toward and away from each other by a wire 3 wound around the bobbin.

A page guide 6.6a is provided at the top of the pair of clamps 5.5a, and the bound article 1 is placed between the guides.
6 is inserted, and the workpiece 16 is held by the clamp.

Furthermore, a pair of tape guides 7.7a is provided at the bottom of the insertion section of the bound product described above in order to position and hold the bookbinding tape 17, and a heater unit is further provided at the bottom of the tape guide. 10 are provided. This heater unit 10 is composed of a pair of heaters 11.13 and a bookrest 15 provided below the heaters 11.13.The heaters 11.13 melt the adhesive of the bookbinding tape and The binding tape is pressed against the binding tape, and the binding operation is performed on the binding object 16 held between the clamps.

In the above-described apparatus of the present invention, a driving device for rotating the handle 30 to grip the bound workpiece is shown in FIGS. 2 and 3. FIG. 2 is a side view centered on the handle of the bookbinding apparatus, and as shown in this figure, a grooved cam 40 is provided on the handle shaft 31 to which the handle is connected.

This grooved cam 40 is fixed to the handle shaft 31, as shown in detail in FIG. lock in the state shown in the close-up of ? ? i43.44 is formed.

These protrusions 41, 42 actuate microswitches 78, 79 provided correspondingly at the starting and ending ends of the rotation of the grooved cam 40, and display the display provided on the control panel of the bookbinding device. It is used to display the status of the parts, and is also used as a signal to control the operation of other necessary parts.

Further, the lock grooves 43 and 44 are formed by the lock member 70 for setting the stop position of the grooved cam 40, similar to the protrusion.
It is adapted to be engaged with the lock bin 73 of. This locking member 70 has a main body 71 attached to a support shaft 7.
2, and is biased counterclockwise by a spring 74 connected to one end.

Furthermore, a locking portion 7 at the end of an arm 76 that is swung by a solenoid 75 is provided at the bottom of the main body of the locking member 70.
7 is positioned, and when the locking portion 77 comes into contact with the lower part of the main body 71, the drive shaft is fixed during the bookbinding operation, and by fixing the drive shaft, the clamp holds the bound work. is maintained.

FIG. 3 is a plan view showing the configuration of the drive device of the present invention. As shown in FIG. 3, the shaft 31 of the handle 30
The grooved cam 40 is fixed to the shaft, and the Geneva gear 50 is interlocked with the grooved cam 40 via a torsion spring 45. Jj and a pair of slip clutches 3 on both sides
3. Drive gear 32 to which rotation of the shaft is transmitted by 33a
is provided.

Further, the drive shaft 60 includes a pulley 61 around which a wire for driving the clamp is wound as described above, a gear 62 that meshes with the drive gear 32, and a Geneva gear 50.
A gear 63 that meshes with is provided.

Of these two gears 62.63, Geneva gear 50
A one-way clutch 64 is provided between the gear 63 that meshes with the drive shaft 60, and drives the drive shaft 60 in the direction of clamping the bound workpiece with the clamp. So, when the handle shaft is still rotated, the driving force is generated by the torsion spring 45.
, the handle shaft is rotated idly and only the grooved cam 40 is rotated.

Next, the relationship between the above-mentioned drive gear 32 and gear 62 will be explained. As shown in FIG. 6, the drive gear 32 is provided to the handle shaft 31 via a pair of slip clutches 33.33a, and the teeth provided around the drive gear 32 are the teeth of the gear 62. The driving force is transmitted to the drive shaft 60.

Returning to FIG. 3 and explaining the drive gear 32, slip clutches 33.3 provided on both sides of the drive gear 32
3a, a spring 35 provided inside a bearing 34 provided in the frame of the main body is connected to a clutch pressure adjustment screw 3.
6, the driving force of the shaft 31 is transmitted while the contact pressure with the slip clutch is adjusted.

Therefore, the relationship between the drive gear and the gears is such that when the clamp clamps the bound workpiece and clamps it with a predetermined pressing force, the slip clutch slips and the rotation of the shaft 31 stops the rotation of both gears.

Further, the relationship between Geneva gear 50 and gear 63 is shown in FIGS. 3 and 5, respectively.

As shown in FIG. 3, the Geneva gear 50 of the present invention includes:
A torsion spring 45 is provided between a cam 40 with an i4 provided on the handle shaft 31, one end 46 of the torsion spring 45 is engaged with the grooved cam 40, and the other end 47 is engaged with the Geneva gear. It is locked at 50. Therefore, the Geneva gear 50 is connected to the handle shaft 31.
The driving force is now transmitted via the torsion spring 45.

Furthermore, as described above, since the gear 63 on the drive shaft side is provided with the one-way clutch 64 between it and the shaft, when the pulley 61 drives the clamp toward the sandwiching side of the bound material due to the rotation of the gear, However, when the handle is rotated in the return direction, even if the gear 63 rotates in conjunction with the rotation of the Geneva gear 50, the one-way clutch 64 idles, so its engagement causes the transmission of driving force. In this case, the drive shaft 60 does not rotate.

Further, as shown in FIG. 5, the spring gear 50 is provided with a cavity 54 therein, and the bottle 53 of the handle shaft 31 is accommodated in the cavity 54, so that the shaft 31 can be rotated at a constant rate. is prevented from being affected by the rotation of the axis. In addition, a portion 52 in which the teeth 51 are not formed is formed in a predetermined angular range around the Geneva gear 50, and in the initial stage of rotation of the shaft 31, the rotation of the Geneva gear 50 is transmitted to the gear 63. It is designed so that it will not happen.

Next, the operation of the drive device of the present invention having the above configuration will be explained.

When binding the bound book 16, as shown in FIG.
The binding material 16 is inserted between the pair of page guides 6.6a, and the handle 30 is rotated in the direction of the arrow. The rotation of the handle 30 causes the gear 62 to be driven through the drive gear 32.
is rotated, the booth is rotated via the drive shaft 60, and the pair of clamps 5.5a are moved in conjunction with each other in the direction of approach to clamp the bound workpiece.

If the handle is still rotated after the bound product 16 is clamped, the rotation of the drive gear 32 is stopped because the slip clutch 33.33a slips, and the rotation of the handle is)
A concave rolling force is generated from the hemlock cam 40 to the Geneva gear 1750 via the torsion spring 45, and the engagement between the Geneva gear 50 and the gear 63 rotates the gear 63, but the rotation is not transmitted to the drive shaft by the one-way clutch 64. .

Then, as shown in FIG. 5, the toothless portion 52 of the Geneva gear 50 is stopped in a state corresponding to the gear 63. As a result of this operation, the rotation of the grooved cam 40 is caused by the protrusion 41 actuating the micro switch 78, and furthermore, after the lock 43 is stopped with the lock bin 73 locked, the start switch for the bookbinding operation is turned on. By doing so, the solenoid 75 is actuated and the locking portion 77 of the arm 76 holds the locking member 70 in a fixed position.

Thereafter, the heater unit 10 is activated, but before that the distance between it and the tape guide 7.7a is set. The size of the bookbinding tape is displayed on the display of the bookbinding device in accordance with the movement distance of the guide that is moved in conjunction with the movement of the clamp. It is now displayed in
The operator selects a bookbinding tape of a predetermined size according to the display and sets it between the tape guides.

After that, when the start button for bookbinding operation is pressed, the heater 13 is pressed against the lower surface of the bookbinding tape to heat and melt the hot melt adhesive on the tape, and at the same time
Glue the tape to the bottom surface of 6.

Next, the heater 13 is moved to the left side of the figure, and the bound article 1
6 against the bookrest 15, and press the bottom surface of the heater 1
1.13 is moved toward both sides of the bookbinding tape, both ends of the bookbinding tape are bent, and heating and pressure are applied to perform side sealing with the bookbinding tape.

When a series of book binding operations are completed as described above and a signal indicating the completion is outputted to the display section, the operator rotates the handle 30 in the opposite direction to release the clamp from holding the bound book. In this case, the solenoid 75 is deenergized upon completion of the bookbinding operation, and the locking member 7
Since the lock operation of 0 is released, the rotation of the drive gear 32 is driven via the gear 62! 11160 is reversed, and the binding of the workpiece by the clamp is released. Furthermore, when the handle is reversed, the force accumulated in the torsion spring 45 acts in the reverse direction of the handle shaft.
This makes it easier to return the clamp.

Then, the bound book that has been sealed with the bookbinding tape is taken out and placed in a standby state for the next book binding.

In the embodiments of the present invention, the relationship between the Geneva gear and the gear provided with the one-way clutch is not limited to the example described above, and it is also possible to use the one shown in FIG. 7 or FIG. 7a. It is possible.

In the example shown in FIG. 7, the Geneva gear 50a is provided with a cam-shaped protrusion 51a without forming teeth, and the gear 63a is provided with a pin 63b that is engaged with the cam member 51a. The structure is such that this operation can be performed by engagement between the bottle 51a and the bottle 63b.

In addition, in the example shown in FIG. 7a, the Zenebagya 5
A bottle member 51b biased by a spring is provided at 0b so that it can be engaged with the teeth of a gear 63.

By using such a member, it is possible to set the rotation of the handle shaft and the drive of the drive shaft, but it is of course also possible to use any other IIIJA member. be.

(Effects of the Invention) Since the bookbinding-like clamp device of the present invention has the above-described configuration, it is possible to significantly shorten the operation of clamping the bound objects, and it is possible to neatly align the bound objects. Even if you cannot insert it and release the clamped state,
The clamping state can be easily released by simply rotating the handle in the opposite direction.

In addition, since a slip clutch is used, the handle stops at a fixed position regardless of the thickness of the bound material, making operation easier for the operator and eliminating the need for variations in the stopping position of the handle during bookbinding. This will prevent such problems from occurring.

[Brief explanation of the drawing]

Fig. 1 is a schematic explanatory diagram of a bookbinding apparatus to which the present invention is applied, Fig. 2 is a side view of the main parts of the apparatus of the present invention, Fig. 3 is a plan view of a portion corresponding to Fig. 2, and Fig. 4. is a side view taken from the C-C direction in Figure 3, Figure 5 is a side view taken from the B-B direction in Figure 3, Figure 6 is a side view taken from the A-A direction in Figure 3, and Figure 6 is a side view taken from the A-A direction in Figure 3. FIG. 7 shows another embodiment of the invention corresponding to FIG.
This figure is an explanatory diagram showing another embodiment of FIG. 5, FIGS. 8 and 9 are explanatory diagrams showing the configuration and operation of the conventional example, respectively, and FIG. 10 is an explanatory diagram of another conventional example. be. Reference numerals 5 and 5a in the figure: Clamp, 10: Heater unit, 16: Binding, 17:
・Bookbinding tape, 30... Handle, 31...
... Handle shaft, 32 ... Drive gear, 33.
33a...Slip clutch, 35...
Spring, 40... Grooved cam, 41/42
...Protrusion, 43/44... Lock full,
45...Torsion spring, 50...
...Geneva gear, 60... Drive shaft, 61...
...Pulley, 62, 63...Gear, 64...
... One-way clutch, 70 ... Lock member, 72 ... Support shaft, 73 ... Lock bin, 74 ... Spring, 75 ...・
・Solenoid, 78/79...Switch. Figure 3 Section 4 Figure 6 Figure 7 Figure 7a Figure 8

Claims (1)

[Scope of Claims] An apparatus configured to clamp a plurality of sheets to form a bound product from both sides with clamps, and thermally adhere them to the binding portion using a band-shaped bookbinding tape, A gear is provided on the drive shaft for driving the clamp via a one-way clutch, and a gear is directly connected to the shaft, and a pulley for driving the clamp is provided coaxially with these gears, and , a pair of clamps are interlocked and moved in the direction of separation from each other by a wire, and a Geneva gear is provided on the handle shaft to which drive is transmitted via a torsion spring to the two gears;
a drive gear, and the drive member of the handle shaft transmits the rotation of the handle to the drive shaft, and is configured so that the clamp can perform a clamping action on the bound work and maintain the clamping state. Machine clamping device.