JP2000301851A - Saddle stitching folding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a saddle stitching folding machine for reducing a cost with a simple constitution by saving a space. SOLUTION: When a drive motor 5 provided at a binding unit 1 is rotated, a crankshaft 6, crank arms 9a, 9b are cooperatively operated through a transmission mechanism having a belt 7, and lower coupling portions 10a 10b coupled by a crank pin 6b move downward. Thus, crank rods 13a, 13b move downward through a coupling mechanism. In this case, stitchers 2a, 2b are moved down, and sheet bundles placed on lower bearers 16a, 16b are saddle stitched. Elevation blocks 17a to 17b are raised cooperativeily with the rods 13a, 13b, and the bundles are creased simultaneously when saddle stitching by creasing blades 19a to 19c respectively provided at fixed blocks 18a to 18c.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a saddle stitching machine capable of imparting a sufficient folding shape to a saddle-stitched sheet bundle.

[0002]

2. Description of the Related Art In a bookbinding process, a center position is bound at several places on a sheet bundle (booklet) formed by stacking printed sheets for one book, and the center-stitched position is folded in half. A saddle stitcher that bends may be used.

FIG. 7 is a schematic configuration diagram showing an example of such a saddle stitching machine. In FIG. 7, the saddle stitching machine 50 includes
A stitcher 51 for binding a bundle of sheets with a binding staple, a binding unit 54 including a flat binding (also serving as a corner binding) stopper 52 and a saddle binding stopper 53, a stopper 55, a folding knife 56, and a pair of folding rollers 57, 57 Folding part 5 provided with
8, a discharge port 59 for discharging the bound sheet bundle.

[0004] The transport path of the sheet bundle includes a transport section including a first transport section 67 using a moving belt from the entrance to the stitcher 51, a transport section including a sliding plate 68 where the stitcher 51 and the flat stitching stopper 52 are disposed, and a sliding plate. The second transport unit 69 shunts from the shunting point 68 over the saddle stitching stopper 53 to the shunt point, and the third transport unit forms a slope by the moving belt from the shunt point to the folding unit 58. Part 7
0, a fourth conveying section 73 from the pair of folding rollers 57, 57 of the folding section 58 to the discharge port 59, and a conveying section with an inclined guide plate 75 from the shunt point to the discharge port 59.

[0005] The moving belts of the first transport section 67, the second transport section 69, and the third transport section 70 are driven by a motor 7 as a drive source.
4 is driven via a deceleration pulley 76. 60 is a paper feed roller, 61, 62 and 71 are paper detection sensors, 6
Reference numerals 3 and 64 denote solenoids, and reference numerals 65 and 66 denote paper holding pulleys. The operation of each of these members is well known in the technical field, and a detailed description thereof will be omitted. 72
Is a switching gate for switching the transport direction of the sheet bundle;
Is a post-processing device that performs post-processing such as stacking and cutting of a bound sheet bundle.

The stitcher 51 is installed at a fixed position on the transport section by the sliding plate 68, and performs a binding process by driving a binding staple from above in accordance with the binding position of the sheet bundle. For example, when performing saddle stitching, a stapling process is performed by a stapling needle 91 at the center position of the sheet bundle 90 as shown in the perspective view of FIG. A stack of sheets bound by side stitching or corner stitching other than saddle stitching by the stitcher 51 is switched by the switching gate.
The transport path is selected in the direction of the inclined guide plate 75 by the port 72 and is carried out to the post-processing device 80 from the discharge port 59.

When the saddle stitch is performed on the sheet bundle as shown in the perspective view of FIG. 8, the transport direction of the sheet bundle is selected by the switching gate 72 in the direction of the third transport section 70. Then, the sheet bundle slides down from the third transport section 70 toward the stopper 55 of the bent section 58.

FIG. 9 is a perspective view showing an outline of the operation of the folding section 58. As shown in FIG. 9, the folding unit 58 folds the sheet bundle 90 by pushing out the folding knife 56 in the arrow P direction to the center binding position of the sheet bundle saddle-stitched by the stitchers 51 by the stitcher 51. The folding knife 56 is formed by the pair of folding rollers 57, 57 disposed on the opposite side of the sheet bundle 90 from the folding knife 56.
View the back of the sheet bundle 90 extruded by arrow Q1, Q
A folding shape is given by pinching from two directions, and the sheet bundle 90 is put in a saddle-stitched state.

In the saddle stitching machine, a folding knife and a pair of folding rollers are added to the sheet bundle 90 subjected to the saddle stitching processing as described above.
The fold is given using a la. However, FIG.
As shown in the side view of FIG. 5, the problem of the numerical value of the height H2 on the open side opposite to the side on which the saddle stitching process of the sheet bundle 90 is formed and the folded shape is increased, that is, the folded shape is not provided. Since the sheet bundle 90 is insufficient, the swelling of the sheet bundle 90 becomes large, and there is a problem that it is difficult to organize and the handling is inconvenient.

To cope with such a problem that the folding of a sheet bundle cannot be sufficiently performed, Japanese Patent Publication No. 60-258065 discloses a method in which a fold is formed in advance for each sheet. It is described that a binding process is performed on a sheet bundle in which the sheets are stacked.

[0011]

However, in the technique described in the above-mentioned publication, since a fold giving section and a binding section are separately provided, a space for giving a fold to a sheet in advance is required. There is a need for a space for binding processing on a sheet bundle formed by accumulating sheets with various folds, and there is a problem that it is not possible to meet the demand for space saving.

Further, since a device for forming a fold on a sheet and a device for performing binding processing on a sheet bundle each require a drive mechanism, the configuration becomes complicated, and the drive mechanism for operating each drive mechanism is required. There was a problem that operation was complicated and cost increased.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a saddle stitching machine that saves space and has a simple configuration and reduced cost.

[0014]

The object of the present invention is to provide a saddle stitching machine according to the first aspect of the present invention, comprising: a lifting mechanism; a stitcher and a first creasing member connected to the lifting mechanism; A stitching portion having a second crease member fixedly disposed at a position opposed to the crease member, and a folding portion for imparting a folding shape to the sheet bundle. Is achieved by performing a binding process at a predetermined position of the sheet bundle, and simultaneously performing a creasing process at a predetermined position of the sheet bundle by the first crease member and the second crease member. .

According to a second aspect of the present invention, in the saddle stitching apparatus according to the first aspect, one of the first and second scoring members has a cross-sectional shape substantially equal to that of the first scoring member. A V-shaped groove is formed, and the other creasing member is provided with a creasing blade having a projecting portion having a mountain-shaped cross section so as to be engaged with the substantially V-shaped groove. I have.

In the invention according to the first aspect, a stitcher for performing binding processing at a predetermined position of the sheet bundle and a crease member for performing creasing processing at a predetermined position of the sheet bundle are arranged side by side in the binding section. Space can be saved. Further, since the creasing member is connected to the elevating mechanism of the stitcher, the configuration can be simplified and the cost can be reduced.

Further, since the saddle-stitched sheet bundle is pre-scored, the folding process can be sufficiently performed by the folding unit. For this reason, the height of the open side opposite to the side on which the saddle stitching process is performed on the sheet bundle and the folded shape is reduced, that is, the swelling of the sheet bundle is reduced, and the organization and handling are facilitated.

According to the second aspect of the present invention, one of the first and second scoring members is formed with a groove having a substantially V-shaped cross section in one of the scoring members, and the other is provided with the other scoring member. In
A creasing blade having a projection having a mountain-shaped cross section is provided so as to engage with the substantially V-shaped groove. For this reason, it is possible to accurately make a crease at a predetermined position according to the thickness of the sheet bundle.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A saddle stitching machine according to an embodiment of the present invention will be described below. FIG. 6 is a schematic perspective view showing the binding section 1 of the saddle stitching machine applied to the present invention. FIG.
In the drawings, 2a and 2b are stitchers, 3a and 3b are side walls, 4 is a support base fixed to the side walls 3a and 3b, 5 is a driving motor, and 5a is connected to an output shaft of the driving motor 5. The first pulley 6 is a fixing portion 8 provided on the support base 4.
a, a crankshaft supported on both sides by 8b, 6a
Is a second pulley connected to the crankshaft 6, and 7 is a belt stretched between the first pulley 5a and the second pulley 6a.

At both ends of the crankshaft, crank arms 9a and 9b are provided, and lower connecting portions 10a and 10b are provided.
b is fixed to the crank arms 9a and 9b by crank pins 6b and 6c (not shown). Further, upper connecting portions 11a and 11b (not shown).
Are connected to the lower connecting portions 10a, 1b by the connecting rods 12a, 12b.
0b.

The pin 11x fixes the crank rod 13a to the upper connecting portion 11a. Further, the crank rod 13b is also fixed to the upper connecting portion by a pin not shown. 14
Is an elevating plate fixed at both ends to the crank rods 13a and 13b, and is connected to the illustrated back side of the stitchers -2a and 2b. Reference numeral 15 denotes a support plate for fixing lower receiving stands 16a and 16b provided at positions corresponding to the stitchers -2a and 2b.

Next, the operation of the binding section 1 will be described.
When the drive motor 5 rotates, the first pulley 5a connected to the output shaft rotates. Rotational force is transmitted via the belt 7 by rotation of the first pulley 5a, and the second pulley 5b rotates. The rotation of the second pulley 5b causes the crankshaft 6 to rotate, and the crank arms 9a and 9b rotate in conjunction therewith. Therefore, the lower connecting portion 1 connected to the crank arms 9a, 9b by the crank pins 6b, 6c.
0a and 10b fall.

When the lower connecting portions 10a and 10b are lowered, the connecting rods 12a and 12b and the upper connecting portions 11a and 1b are moved downward.
1b is also lowered, and the crank rods 13a, 13b connected to the upper connecting portions 11a, 11b by pins are lowered. When the crankshaft 6 further rotates, the lower connecting portions 10a, 10b
Rise, and the crank rods 13a and 13b also rise.

Thus, the rotational movement of the crankshaft 6 is converted into a linear movement, and the crank rods 13a and 13b move up and down. Therefore, both ends of the crank rod 13a, 1
The lift plate 14 fixed to 3b also moves up and down in conjunction with it, and the stitchers -2a and 2b move up and down.

The sheet bundle formed by the sheets stacked on the lower receiving trays 16a and 16b is moved downwardly by the lower receiving trays 16a and 16b when the stitchers -2a and 2b are lowered.
Saddle stapling is performed at a predetermined position, in this example, at two locations, by being sandwiched and pressurized by 2a and 2b. When the saddle stitching process is completed, as the crank rods 13a and 13b rise,
The stitchers -2a and 2b also rise. Thereafter, the sheet bundle subjected to the saddle stitching process is transported to a folding unit in the next process by a transport unit (not shown).

As described above, in FIG. 6, the binding portion 1a
The stitcher 2a, 2b performs a predetermined saddle stitching process on the sheet bundle by operating the elevating mechanism. In the present invention, a scoring member is provided in the binding section in parallel with the stitcher, and the scoring member is operated together with the stitcher using the elevating mechanism to perform the scoring process on the sheet bundle simultaneously with the saddle stitching process. This is a basic configuration.

FIG. 1 is a perspective view showing an example of a binding section 1 provided with a creasing member in addition to a stitcher. 6 that are the same as or correspond to those in FIG. 6 are denoted by the same reference numerals. In the example of FIG. 1, lifting blocks 17a, 17b are fixed to the lifting plate 14 on both sides of the stitchers -2a, 2b. Although not shown, the lifting block 17c is also fixed to the lifting plate 14 between the stitchers -2a and 2b.

Fixing blocks 19a to 19c are provided at positions corresponding to the lifting blocks 17a to 17c, and are fixed to the support plate 15. A groove having a predetermined width is formed in each of the fixed blocks 19a to 19c, and the fixed blocks 19a to 19c are formed.
The creasing blades 19a to 19c are fitted in the grooves formed in 19c.

FIG. 2 is a side view as viewed in the direction of arrow A with the side wall 3a removed in FIG. Next, the configuration of the lifting block 17a and the fixed block 19a will be described with reference to FIG. 2, but the configuration of the other lifting blocks and the fixed block is the same, and the description is omitted. As shown in FIG.
The lifting block 17a has a groove 17x having a substantially V-shaped cross section.
Are formed.

Further, a protruding portion 19x having a mountain-shaped cross section is formed at the tip of the creasing blade 19a. Scoring blade 1
The 9a chevron projection 19x engages with the V-shaped groove 17x formed in the elevating block 17a.
The angle of inclination of the chevron is selected. 19y is fixed block 1
The elastic member is filled in the groove formed in 8a. Projection 1 formed at the tip of creasing blade 19a
When a pressing force is applied to 9x, the creasing blade 19a enters the groove while receiving a reaction force by the elastic member 19y.

FIG. 3 is a side view showing an example in which a crease is formed at a predetermined position of the sheet bundle by the crease section, and corresponds to FIG. When the sheet bundle 24a is carried into the binding unit 1 and the crankshaft 6 rotates 180 degrees from the state shown in FIG.
The lower connecting portion 10a connected to the drum 9a by the crank pin 6b shifts from the position in FIG. 2 to a position rotated by 180 degrees.

Therefore, the connecting rod 12a and the upper connecting portion 1
0a, the crank rod 13a descends via the pin 11x,
The elevating block 17a of the creasing section moves in a direction approaching the fixed block 18a. For this purpose, the sheet bundle 24a is pushed up by a mountain-shaped projection 19x in the cross-sectional shape of the creasing blade 19a fitted in the groove of the fixed block 18a at a predetermined position, and the cross-sectional shape formed on the lifting block 17a. Is pushed into the V-shaped groove 17x.

When the sheet bundle 24a is pushed into the V-shaped groove 17x formed in the elevating block 17a, the cross-sectional shape of the creasing blade 19a has a mountain-shaped projection 19x.
, A pressing force from the sheet bundle 24a and the lifting block 17a acts, so that the creasing blade 19a enters the groove against the reaction force of the elastic material 19y filled in the groove of the fixed block 18a. . In this way, the creasing blade 19
a while adjusting the distance between the chevron-shaped protrusion 19x formed on the elevation block 17a and the V-shaped groove 17x formed on the elevating block 17a, a streak (fold) is formed at a predetermined position of the sheet bundle 24a.
Is inserted.

When the lifting block 17a is raised, the pressing force acting on the creasing blade 19a is released, and the creasing blade 19a is released.
a rises in the groove provided in the fixed block by the reaction force of the elastic body, and returns to the state of FIG. As described above, since the elastic material 19y is filled in the groove of the fixed block 18a,
According to the degree of the thickness of the sheet bundle 24a, the scoring blade 19a moves vertically in the groove of the fixed block 18a, and the scoring process can be performed at an optimum position. Further, it is possible to cope with a case where a sheet having a thickness such as a cover is added to the sheet bundle and the sheet bundle and the cover are simultaneously creased.

Similarly, a streak is formed at a predetermined position of the sheet bundle by the operation of the lifting block 17b and the fixed block 18b, and the operation of the lifting block 17c and the fixed block 18c. At the same time as the creasing process, saddle stitching is performed on the sheet bundle by the stitchers 2a and 2b as described above.

In the present invention, a stitcher is provided at the binding portion.
A crease member is provided in parallel with the above, and the crease member is simultaneously operated by the raising / lowering mechanism of the stitcher, thereby performing saddle stitching processing and crease processing at a predetermined position of the sheet bundle, for example, at the center. is there. In the example of FIG. 1, the sheet bundle is subjected to the creasing processing on both sides and the center except for the part to be saddle-stitched by the stitcher. Can do it.

The sheet bundle 24a subjected to the saddle stitching process is subsequently conveyed to a folding section as shown in a side view of FIG. The folding knife 21
And folding rollers 22 and 23 are provided. Sheet bundle 24
a, position the folding knife 21 in the position where the saddle stitching process is performed
Extrusion from the direction to perform the folding process.

As described above, scoring is performed by the scoring member at the center-stitched position of the sheet bundle 24a. For this reason, even if fine alignment between the position where the saddle stitching process is performed and the position where the folded shape is provided is not performed, the folded shape can be reliably provided to the sheet bundle 24a. The folded sheet bundle 24b is conveyed to the next process from the arrow Q direction.

Further, since the sheet bundle 24a is provided with a streak at a predetermined position in advance, the folding process by the folding knife 21 and the pair of folding rollers 22, 23 can be sufficiently performed. Therefore, as shown in the side view of FIG.
Since the numerical value of the height H1 on the open side, which is opposite to the side on which the saddle stitching process is performed and the folded shape is provided, becomes smaller and the bulge is reduced, it is easier to organize and handle.

[0040]

As described above, according to the first aspect of the present invention, the stitcher for performing binding processing at a predetermined position of a sheet bundle and the crease member for performing crease processing at a predetermined position of the sheet bundle are bound. Since they are arranged in parallel with each other, space can be saved. Further, since the creasing member is connected to the elevating mechanism of the stitcher, the configuration can be simplified and the cost can be reduced.

Further, since the saddle-stitched sheet bundle is pre-scored, the folding section can sufficiently perform the folding process. For this reason, the height of the open side opposite to the side on which the saddle stitching process is performed on the sheet bundle and the folded shape is reduced, that is, the swelling of the sheet bundle is reduced, and the organization and handling are facilitated.

In the invention according to claim 2, one of the first scoring member and the second scoring member is formed with a groove having a substantially V-shaped cross section, and the other scoring member is formed. In
A creasing blade having a projection having a mountain-shaped cross section is provided so as to engage with the substantially V-shaped groove. For this reason, it is possible to accurately make a crease at a predetermined position according to the thickness of the sheet bundle.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a binding portion of a saddle stitching machine according to an embodiment of the present invention.

FIG. 2 is a side view as seen from the direction of arrow A in FIG. 1;

FIG. 3 is a side view showing an example in which a crease is formed at a predetermined position of a sheet bundle by a crease.

FIG. 4 is a side view of a folding unit.

FIG. 5 is a side view of a sheet bundle to which a saddle stitching process is performed and a folded shape is given;

FIG. 6 is a schematic perspective view showing a binding portion of the saddle stitching machine applied to the present invention.

FIG. 7 is a schematic configuration diagram illustrating an example of a conventional saddle stitching machine.

FIG. 8 is a perspective view of a sheet bundle subjected to saddle stitching.

FIG. 9 is a perspective view of an example in which folding processing is performed on a sheet bundle subjected to saddle stitching.

FIG. 10 is a perspective view of a sheet bundle to which a folded shape is given by performing a conventional saddle stitching process.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Binding part 2a, 2b Stitcher 5 Drive motor 6 Crankshaft 9a, 9b Crank arm 13a, 13b Crank rod 16a, 16b Lower receiving stand 17a-17c Elevating block 18a-18c Fixed block 19a-19c Scoring blade 21 Folding knives 22, 23 A pair of folding rollers 24a Paper bundle

Claims (2)

[Claims] An elevating mechanism, a stitcher connected to the elevating mechanism, a first scoring member, and a second scoring member fixedly arranged at a position facing the first scoring member. And a folding section for imparting a folding shape to the sheet bundle. When the lifting mechanism is lowered, the stitcher performs a binding process at a predetermined position of the sheet bundle, and at the same time, a first creasing member. And a second scoring member for performing a scoring process at a predetermined position of the sheet bundle. 2. A groove having a substantially V-shaped cross section is formed in one of the first and second creasing members, and the substantially V-shaped groove is formed in the other creasing member. The saddle stitching machine according to claim 1, further comprising a creasing blade provided with a projection having a mountain-shaped cross-section so as to engage with the groove having a V-shape.