JP3034702B2 - Vertical sewing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical sewing machine, and more particularly to a vertical sewing machine which forms perforated lines in a signature for performing azilo bookbinding.

[0002]

2. Description of the Related Art Conventionally, a bookbinding method called aziro bookbinding has been frequently used in bookbinding.

FIG. 6 shows an example of a bookbinding procedure for bookbinding. As shown in FIG. 6 (E), a book 90 bound by Ajiro bookbinding is composed of a number of signatures 91. Signature 91,
A large number of vertical perforations 92, called azilo perforations, formed on the spine are aligned in the thickness direction of the book 90, and a large number of the perforations are arranged. The book 90 is configured to be mutually fixed by impregnating the agent.

As a method for forming such a signature 91, a procedure as shown in FIGS. 6A to 6D is preferable. First,
A web 93 continuously printed by a printing machine or the like (not shown) is conveyed downward in the drawing in a folding machine, and is passed through a vertical perforation device 94 to process a vertical perforation 92 at a central portion in the conveyance direction (FIG. 6). (State (A)), and cut into signatures 95 having a predetermined length in the transport direction (state in FIG. 6 (B)).

The signature 95 is caught and folded by a not-shown plunging cylinder with a fold line 96 in a direction intersecting the vertical perforation 92 as a fold, resulting in a signature 97 (the state shown in FIG. 6C). Then, the signature 97 is chopper-folded with the vertical perforation 92 as a folding line, that is, in a four-fold state (the state of FIG. 6D).

The above-mentioned fold line 96 is often processed in advance with a horizontal perforation. This is because when the signature 95 is bitten and folded, the folding line 96 is formed at an accurate position by contacting the horizontal perforation with a plunging spatula provided on the peripheral surface of the plunging body. Is in a folded state 97
This is for reducing the folding resistance by letting the air inside of the outside to the outside.

Incidentally, as the vertical sewing machine 94, FIG.
It is known that a vertical sewing machine blade 98 and a vertical sewing machine blade receiver 99 as shown in FIG. The vertical sewing blade 98 has a disk shape, and a large number of cutting blades are formed at predetermined regular intervals in the circumferential direction. On the other hand,
Reference numeral 99 has a groove into which the vertical sewing blade 98 bites.

[0008] Such a vertical sewing machine 94 includes a vertical sewing machine blade.
The web 93 is rolled by inserting the web 93 between the 98 and the vertical perforation blade receiver 99, or the web 93 is processed into a vertical perforation 92 by being rotationally driven by a predetermined drive source.

By the way, in Ajiro bookbinding, signature 91
In order to securely adhere and fix the outer page and the inner page in the above state, it is necessary that the cut portions of the vertical perforations 92 overlap each other. Therefore, the vertical perforation 92 is required to form a cut at a symmetrical position in the transport direction about the folding line 96 at the stage of the signature 95.

[0010] For this purpose, the present applicant has proposed a perforated bookbinding perforation method and apparatus in which the circumferential length of the vertical sewing blade is set to 1: 1 with respect to the length of the signature in the conveying direction (Japanese Patent Application No. Hei 10-26138). 4-38578). This perforated bookbinding perforation apparatus includes a vertical perforation blade 92 and a vertical perforation blade receiver 99 which are driven to rotate in different directions by a predetermined driving source, and a web 93 is conveyed and passed between them. Is to process.

In this perforated bookbinding perforation apparatus, the rotational phase of the vertical sewing blade 98 is adjusted in advance to the horizontal perforation apparatus for processing a horizontal perforation, so that the folding direction 96 can be adjusted. Cuts can be formed at symmetrical positions.

[0012] In addition to the above-mentioned Ajiro bookbinding,
For example, there is also a method in which azilo perforations are formed immediately before the web is chopper-folded.

[0013]

However, in the above-described perforating apparatus for aziro bookbinding, since the relationship between the peripheral length of the vertical sewing machine blade and the length of the signature in the conveying direction is a 1: 1 system, the diameter thereof is small. For example, a large-diameter sheet having a size of 198.9 mm for the A-row horizontal full-size format and 173.8 mm for the B-row vertical half-size format is required.

Accordingly, in the perforation binding machine for perforating booklets, it is necessary to increase the axial distance between the vertical sewing blade and the vertical sewing blade holder, and also to increase the size of the drive system for rotating these. There is a problem that the whole structure becomes large and space efficiency for installation is poor.

Further, since the vertical sewing machine blade is supported at both ends by a support shaft fixed to the frame of the perforating machine for perforating booklets, large-scale disassembly is required for replacement, and replacement work is complicated. There is also the problem of becoming.

In the Ajiro bookbinding, as shown in FIG. 7A, a surplus portion 100 of a wrap amount e called a wrap portion may be provided at one end in the conveying direction at the stage of the signature 97. For this purpose, as shown in FIG.
At this stage, the position setting of the folding line 96 may be changed. The fold line 96 of the signature 95 is set at a position moved by e / 2 in the transport direction from the normal, and the rotation of the vertical sewing blade is performed in order to move the vertical perforation 92 by e / 2 in the transport direction correspondingly. Adjustment work to reset the angle is required.

However, in this adjustment work, the fixing bolt for fixing the vertical sewing blade to the support shaft is loosened, the rotation angle of the vertical sewing blade is changed, and the fixing bolt is tightened again. This is a troublesome operation to check whether the vertical perforations are processed at the appropriate positions by driving. In particular, if the vertical perforations have not been machined to an appropriate position after the work is completed, the above-mentioned work needs to be performed again, and there is a problem that the adjustment work of the perforation apparatus for azilo binding becomes very complicated. Was.

An object of the present invention is to provide a vertical sewing machine which is excellent in space efficiency and can easily perform operations such as adjustment.

[0019]

According to the present invention, there is provided a vertical sewing machine blade for forming a vertical perforation in a signature, wherein the vertical sewing blade has a circumference shorter than a length of the signature in the conveying direction, The product number of the number of blades of the vertical sewing machine blade and the number of rotations of the vertical sewing machine blade with respect to the length of the signature in the transport direction is an integer.

Here, as the circumferential length of the vertical sewing machine blade, an effective circumferential length that actually comes into contact with the web may be adopted in consideration of the fact that the blade edge bites into the web.

Further, in the present invention, it is preferable that the vertical sewing blade is capable of following the rotation phase of a horizontal sewing machine that forms a horizontal perforation of the signature in the width direction. Is preferably attached to the end of the spindle.

[0022]

In the present invention, as shown in FIG. 1, the product number of the number n of the vertical sewing blades and the rotation speed N of the vertical sewing blades with respect to the signature is an integer A. The number of rotations N of the vertical perforation blade indicates how many rotations of the vertical perforation blade 98A having the circumference L2 to form the vertical perforation 92 with respect to the signature 95 having the length L1 in the transport direction. And N = L1 / L2.

On the other hand, the cut pitch of the vertical perforations 92 to be processed into the signature 95 is always constant L2 / n. For example, the vertical perforation blade 98A may be vertically perforated with respect to the fold line 96 of the signature 95.
If the phase is adjusted so that the cut 92A of the 92 is formed at a symmetrical position in the transport direction, as long as the length L1 of the signature 95 in the transport direction does not change, the position at which the cut 92A is formed can be an even number or an odd number of blades n. Regardless, it is always constant.

The vertical sewing blade 98A has a circumference L2 that is a signature.
Since the length is set to be shorter than the length L1 in the transport direction of 95, the diameter thereof can be made smaller than that of the conventional 1: 1 type vertical sewing machine blade 98. Therefore, the distance between the shaft and the vertical sewing machine blade receiver can be reduced, and there is no need to increase the size of these drive systems.

Furthermore, the vertical sewing machine blade 98A automatically follows the change in the position of the folding line 96 by making its rotational phase follow the rotational phase of the horizontal sewing machine, so that the processing position of the vertical perforation 92 automatically changes. Symmetry about the fold line is maintained. Therefore, when changing the wrap amount of the fold, it is not necessary to separately adjust the rotational phase of the vertical sewing blade 98A.

The vertical sewing machine blade 98A is attached to the end of the support shaft of the vertical sewing machine blade 98A in a so-called cantilever manner. Are no longer required, thereby achieving the above object.

[0027]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 shows a printing apparatus 10 according to an embodiment of the present invention.
Is shown. Web in this embodiment
11 is printed on both sides in a printing portion of a printing apparatus (not shown), and is folded into two in a direction intersecting with the conveying direction after entering the folding machine portion, and a pair of opposedly arranged with the web 11 interposed therebetween. The paper is continuously fed downward by a feed roller 12 in the figure.

The folding machine portion of the present embodiment forms a vertical perforation 14 at the center portion of the web 11 in the transport direction by a vertical sewing machine 13 constructed according to the present invention, and then processes the vertical perforation 14 by a horizontal sewing machine 15. A horizontal perforation 16 for biting and folding which becomes a fold line portion in a direction intersecting with the perforation 14 is processed as necessary, and then cut into a predetermined length L1 in the transport direction by a cutting device 17 to bite and fold. This is the signature 18 of the previous stage.

The vertical sewing machine device 13 has a vertical sewing machine blade receiver 19 and a vertical sewing machine blade 20 which are arranged to face each other with the web 11 interposed therebetween, and these are interlocked with the plunging spatula gear 21 of the plunging cylinder 43, respectively. They can be driven to rotate in different directions. That is, in the vertical sewing machine blade receiver 19, the vertical sewing machine blade receiving gear 22 provided at the end of the support shaft thereof has the first idler 23, the second idler 24,
The rotation can be driven by the rush spatula gear 21 via the third idler 25, the fourth idler 26, and the fifth idler 27.

On the other hand, the vertical sewing machine blade 20 is configured such that a vertical sewing machine blade gear 28 provided at the end of the support shaft thereof can be driven to rotate by the vertical sewing machine blade receiving gear 22 via a sixth idler 29 and a seventh idler 30. Have been. The sixth idler 29 and the seventh idler 30 are respectively meshed with a feed roller gear 31 provided at the end of the support shaft of the feed roller 12, whereby the feed roller gear 31 drives the vertical sewing machine 13. And can be driven to rotate in different directions.

In such a vertical sewing machine blade 20, a large number of cutting blades are formed at predetermined regular intervals in the circumferential direction.
L2 is set to L1 / 2 smaller than the length L1 of the signature 18 in the transport direction. Then, the product number of the number of blades of the vertical perforation blade 20 and the number of rotations of the vertical perforation blade 20 required for processing the vertical perforation 14 on the signature 18 is set to be an integer.

The horizontal sewing machine 15 includes a cylindrical horizontal sewing machine blade cylinder 32 and a horizontal sewing machine blade receiving cylinder which are arranged to face each other with the web 11 interposed therebetween.
The horizontal sewing machine gears 34 and 35 provided at the ends of the support shafts are linked to the third idler 25, and are rotatable in different directions. The third idler 25 is provided with a clutch section 36 (see FIG. 3).
The drive of the horizontal sewing machine 15 can be turned on and off via 36.

As shown in FIG. 3, the clutch section 36 is provided with a clutch gear 37 which is arranged in series with the third idler 25 on the same axis as the third idler 25. Clutch gear
37 is always meshed with the horizontal sewing machine gear 34 (see FIG. 2), and is held via a clutch bracket 40 on a clutch shaft 39 which can be advanced and retracted in the axial direction by an air cylinder 38. The clutch gear 37 is a support shaft of the third idler 25.
The shaft is passed through 41 and is rotatable regardless of the movement in the axial direction.

The clutch section 36 is an air cylinder.
The clutch gear 37 and the claw portions 42 provided on the opposing side surfaces of the third idler 25 can be engaged with each other by 38, and the horizontal sewing machine 15 is driven by the third idler 25 so as to be able to be turned on and off. The claw portion 42 can be engaged only when the third idler 25 and the clutch gear 37 have a predetermined rotation phase set in advance, and the clutch portion 36 can be engaged with the vertical sewing device 13 and the horizontal sewing device 15. Is a so-called dog clutch which can be turned on and off only when the rotational phases of the dog clutches coincide with each other.

Returning to FIG. 2, the cutting device 17 has a cylindrical pushing cylinder 43 and a cutting cylinder 44 which are arranged opposite to each other with the web 11 interposed therebetween. The interlocking cutting gear 45 can rotate in different directions. The first idler 23 is provided with a phase adjusting device 47 so that the processing position of the horizontal perforation 16 of the web 11 by the horizontal sewing machine 15 can be adjusted.

As shown in FIG. 3, the phase adjusting device 47 is capable of arbitrarily adjusting the rotational phase of the rush spatula gear 21 and the second idler 24 by moving the first idler 23 in the axial direction. It is. The first idler 23 is a plunging spatula gear 21
And a spur gear 49 meshing with the second idler 24.These spur gears 49 are arranged in series on a coaxial line with each other and can be integrally rotated. The phase adjustment shaft 50 of the device 47 is screwed and connected.

The phase adjustment shaft 50 can be rotated forward or backward by a servomotor 52 via a pair of bevel gears 51. Therefore, the first idler 23 is
The forward and backward rotation of 52 causes the shaft to advance and retreat in the axial direction, and the helical spatula gear 21 and the bevel gear 48 change the rotation phase in a stepless manner within the range of each lead angle, whereby the rush gear 21 and the second The rotational phase with the idler 24 can be adjusted steplessly and arbitrarily.

As shown in FIG. 4, a vertical sewing machine blade shaft 53 on which the vertical sewing machine blade 20 is supported has one end (left side in the figure) protruding from a frame 54, and a vertical sewing machine blade gear 28 is provided. Extends to a position where the vertical sewing blade 20 is arranged, and the so-called vertical sewing blade 20 is cantilevered.

The vertical sewing machine blade shaft 53 is provided on a seventh idler shaft 54 of the seventh idler 30 by a support bracket 55.
The seventh idler shaft 54 is rotatably supported about the axis thereof. A vertical sewing machine blade holder 56 for holding the vertical sewing machine blade 20 is detachably attached to the other end side (right side in the drawing) of the vertical sewing machine blade shaft 53.

As shown in FIG. 5, the vertical sewing machine blade holder 56
Has a holder body 57 and a holding member 58, and the stepped portion 59 of the holder body 57 axially supports the vertical sewing machine blade 20 and the holding member 58, and these are integrally fixed by a fixing bolt 60. Things. Such a vertical sewing machine blade holder 56
The rotation angle of the vertical sewing machine blade shaft 53 with respect to the vertical sewing machine blade shaft 53 is determined by a key part 61 formed on the vertical sewing machine blade shaft 53 in a predetermined angular relationship.

Note that, as shown in FIG.
Is the first member 6 that can be divided in the radial direction of the vertical sewing machine blade receiving shaft 63.
Fourth, a second member 65 is formed on its peripheral side surface with a groove 66 into which the outer peripheral portion of the vertical sewing machine blade 20 bites.

The vertical sewing machine 13 is provided with a vertical perforation position adjusting device 67. The vertical perforation position adjusting device 67 includes a moving frame 68 that collectively holds the shaft ends of the seventh idler shaft 54 and the vertical perforation blade receiving shaft 63.
Thus, the position of a vertical perforation to be processed into a signature can be arbitrarily set in the transport width direction.

In this embodiment as described above, the rotation angle of the vertical perforation blade 20 is appropriately set, and the cut of the vertical perforation 14 is formed at a symmetrical position in the transport direction from the horizontal perforation 16 of the signature 18. Keep it. The formation position of the cut of this vertical perforation 14 is always constant.

Then, the formation position of the horizontal perforation 16 is changed,
That is, when the fold line portion of the signature 18 is changed, the first idler 23 advances or retreats in the axial direction following the rotation phase of the horizontal sewing machine 15 or alone, and is driven by the rush gear 21. Phase the rotation angle of the idler 24. The rotation phase of the second idler 24 depends on the third idler 25 and the clutch unit 36.
The rotation of the horizontal perforation blade 32 and the rotation of the horizontal perforation blade receiving cylinder 33 is thereby changed by interlocking with the horizontal perforation gears 34 and 35 via.

On the other hand, the vertical sewing machine 13 has a third idler 25
Are interlocked with the vertical sewing machine blade receiving gear 22 via the fourth idler 26 and the fifth idler 27 which always mesh with each other, and are interlocked with the vertical sewing machine blade gear 28 via the sixth idler 29 and the seventh idler 30. . Accordingly, the rotation angles of the vertical perforation blade receiver 19 and the vertical perforation blade 20 are interlocked with the phases of the rotation angles of the horizontal perforation blade 32 and the horizontal perforation blade receiver 33, and the vertical perforation 14 is the processing position of the horizontal perforation 16. The break formation position changes following the change.

In order to stop the driving of the horizontal sewing machine 15, the clutch gear 37 is separated from the third idler 25 to disconnect the clutch portion 36. However, even if the clutch portion 36 is inserted again, the clutch gear 37 and the clutch gear 37 are disengaged. The third idler 25 is connected to each other only at a predetermined rotation angle, and the horizontal perforations 16 and the vertical perforations 14 are provided.
The relationship with will not go wrong.

According to this embodiment as described above, since the product number of the number of blades of the vertical sewing blade and the number of rotations of the vertical sewing blade with respect to the signature is an integer, the signature 18 is processed. The cut of the vertical perforation 14 is always formed at a fixed position as long as the length L2 in the transport direction does not change.

The vertical sewing blade 20 has a circumference L2 that is a signature.
Since the length is shorter than the length L2 in the transport direction of 18, the diameter is 1: 1.
It can be smaller than a single type of vertical sewing blade. Therefore, the vertical sewing machine 12 can reduce the distance between the shafts of the vertical sewing machine blade receiver 19 and the vertical sewing machine blade 20 as compared with the conventional machine, and does not need to use large components for the drive system and the like. Can improve space efficiency.

The vertical sewing machine 13 is a horizontal sewing machine.
Since it is possible to follow the rotation phase of 15
If the rotation angles of the horizontal perforation blade 32 and the horizontal perforation blade receiving cylinder 33 are changed in order to change the processing position of 16, these angular phases are automatically linked to the vertical perforation blade 20 to automatically process the vertical perforations 14. Change position. Accordingly, there is no need to separately adjust the rotation angle of the vertical sewing machine blade 20, and the operation of the vertical sewing machine 13 can be simplified.

The vertical sewing blade 20 is a vertical sewing blade holder.
Since it is held by 56, the attachment / detachment work to / from the vertical sewing machine blade shaft 53 can be performed quickly and easily. In particular, since the vertical sewing machine blade shaft 53 and the vertical sewing machine blade holder 56 have their mounting angles set by the key portion 61, they can be easily positioned when attaching and detaching.

It should be noted that the present invention is not limited to the above-described embodiment, but includes improvements, modifications, and the like within a range in which the present invention can be achieved.

For example, in the above embodiment, the vertical sewing machine 13
Has been driven by the ramming spatula gear 21 that drives the horizontal sewing machine 15 and the cutting device 17, but if the rotation phase can follow the rotation phase of the horizontal sewing machine 15, the vertical sewing machine 13
It may be driven by a dedicated drive source.

In addition, the driving method of the vertical sewing machine 13 may be belt driving, hydraulic driving or the like in addition to gear driving other than the present embodiment, and the method is arbitrary.

The circumferential length L2 of the vertical sewing blade 20 is L1 / L2.
Although it is set to 2, the product number of the number of blades of the vertical sewing machine blade 20 and the number of rotations of the vertical sewing machine blade 20 with respect to the signature 18 is arbitrary, and may be set as appropriate.

Further, the number of blades, the blade shape, the blade pitch and the like of the vertical sewing machine 20 are arbitrary, and the length L1 of the signature 18 in the transport direction is set.
It may be set appropriately according to the desired vertical perforation.

[0056]

According to the present invention as described above, it is possible to provide a vertical sewing machine which is excellent in space efficiency and can be easily adjusted.

[Brief description of the drawings]

FIG. 1 is a schematic view showing the principle operation of the present invention.

FIG. 2 is a schematic overall perspective view showing one embodiment of the present invention.

FIG. 3 is a cross-sectional view showing a clutch unit and a phase adjustment device.

FIG. 4 is a sectional view showing a vertical sewing machine blade and a vertical sewing machine blade receiver.

FIG. 5 is an exploded perspective view showing the vertical sewing machine blade holder.

FIG. 6 is a schematic diagram showing a bookbinding procedure for Asiro bookbinding.

FIG. 7 is a perspective view showing a wrap portion provided on the signature;

[Explanation of symbols]

 13 Vertical sewing machine 14 Vertical perforation 15 Horizontal sewing machine 18 Signature 20 Vertical sewing blade L1 Length of signature in the conveying direction L2 Perimeter of vertical sewing blade n Number of vertical sewing blades N Rotation of vertical sewing blade relative to signature number

──────────────────────────────────────────────────の Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B42C 19/00-19/06 B42C 3/00 B65H 45/18

Claims (3)

(57) [Claims] 1. A vertical perforation blade for forming a vertical perforation in a signature, wherein the perimeter of the vertical perforation blade is shorter than the length in the conveying direction of the signature, and the number of blades of the vertical perforation blade And a product number of the number of rotations of the vertical sewing machine blade with respect to the length of the signature in the conveying direction is an integer. 2. The vertical sewing machine according to claim 1, wherein the vertical sewing blade is capable of following the rotational phase of the horizontal sewing machine that forms a horizontal perforation in the signature. Vertical sewing machine device. 3. The vertical sewing machine according to claim 1, wherein the vertical sewing blade is attached to a spindle end of the vertical sewing blade.