JP4311810B2 - Saddle folding machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a saddle stitch folding machine capable of imparting a sufficient folding shape to a sheet bundle subjected to saddle stitching processing.
[0002]
[Prior art]
In the bookbinding process, a saddle-stitching machine that binds several central positions to a bundle of sheets (booklet) formed by stacking one printed sheet and folds the position after the saddle stitching process into two. May be used.
[0003]
FIG. 7 is a schematic configuration diagram showing an example of such a saddle stitch folding machine. In FIG. 7, the saddle stitch folding machine 50 includes a stitcher 51 that binds a bundle of sheets with a stitching needle, a stopper 52 for flat binding (also serving as a corner binding), a binding portion 54 that includes a stopper 53 for saddle stitching, and a stopper 55 and a folding device. A folding part 58 having a knife 56, a pair of folding rollers 57, 57, and a discharge port 59 for discharging the bundle of sheets subjected to the binding process are provided.
[0004]
The conveyance path of the sheet bundle is the first conveyance unit 67 by the moving belt from the carry-in entrance to the stitcher 51, the conveyance unit by the sliding plate 68 where the stitcher 51 and the flat stitching stopper 52 are arranged, and from the sliding plate 68 to the middle. A second conveying unit 69 that shunts past the binding stopper 53 and moves to the shunt point, a third conveying unit 70 that forms a slope by the moving belt from the shunt point to the folding unit 58, It is formed by a pair of folding rollers 57 of the folding part 58, a fourth conveying part 73 from the 57 to the outlet 59, and a conveying part by an inclined guide plate 75 from the shunt point to the outlet 59.
[0005]
The moving belts of the first transport unit 67, the second transport unit 69, and the third transport unit 70 are driven from a motor 74, which is a drive source, via a speed reduction pulley 76. 60 is a paper feed roller, 61, 62 and 71 are paper detection sensors, 63 and 64 are solenoids, and 65 and 66 are paper press pulleys. Since the operation of each of these members is well known in the technical field, a detailed description is omitted. Reference numeral 72 denotes a switching gate for switching the conveyance direction of the sheet bundle, and 80 denotes a post-processing device that performs post-processing such as stacking and cutting of the bundle of bound sheets.
[0006]
The stitcher 51 is installed at a fixed position on the conveying unit by the sliding plate 68, and performs binding processing by driving a binding needle from above according to the binding position of the sheet bundle. For example, when performing saddle stitching, as shown in the perspective view of FIG. 8, binding processing is performed by the binding needle 91 at the center position of the sheet bundle 90. A sheet bundle that has undergone flat stitching or corner binding other than saddle stitching by the stitcher 51 is selected by the switching gate 72 in the direction of the inclined guide plate 75, and the post-processing device 80 from the discharge port 59. It is carried out to.
[0007]
When the saddle stitching is performed on the sheet bundle as shown in the perspective view of FIG. 8, the conveyance direction of the sheet bundle is selected by the switching gate 72 to the direction of the third conveyance unit 70. The sheet bundle is slid down from the third conveyance unit 70 toward the stopper 55 of the bending unit 58.
[0008]
FIG. 9 is a perspective view showing an outline of the operation by the folding unit 58. As shown in FIG. 9, the folding unit 58 folds the sheet bundle 90 by pushing the folding knife 56 in the arrow P direction to the saddle stitching position of the sheet bundle that is saddle-stitched by the stitching needles 91 and 91 by the stitcher 51. The pair of folding rollers 57, 57 disposed on the opposite side of the folding knife 56 with respect to the folding sheet 56 squeezes the back of the stacking sheet 90 pushed out by the folding knife 56 from the direction of arrows Q 1, Q 2. The sheet bundle 90 is in a saddle stitch folded state.
[0009]
In the saddle stitch folding machine, a folded shape is imparted to the sheet bundle 90 subjected to the saddle stitching process as described above using a folding knife and a pair of folding rollers. However, as shown in the side view of FIG. 10, there is a problem that the numerical value of the height H2 on the open side opposite to the side on which the folding is given by the saddle stitch processing of the sheet bundle 90, that is, the folding. Since the shape is not sufficiently applied, the swell of the sheet bundle 90 becomes large, and there is a problem that it is difficult to organize and inconvenient to handle.
[0010]
Therefore, as an example of coping with the problem that folding cannot be sufficiently applied to such a sheet bundle, Japanese Patent Publication No. 60-2558065 discloses that a crease is given to each sheet in advance. In this document, the binding process is performed on a bundle of sheets.
[0011]
[Problems to be solved by the invention]
However, since the technique described in the above publication has a crease-applying portion and a binding portion separately, a space for pre-applying a crease to the paper and the paper with such a crease are accumulated. Therefore, there is a problem in that a space for binding processing is required for each of the sheet bundles formed in this manner, and the request for space saving cannot be satisfied.
[0012]
In addition, since a device for applying a crease to a sheet and a device for binding a bundle of sheets each require a drive mechanism, the configuration is complicated and the operation for operating each drive mechanism is complicated. And there was a problem that cost also increased.
[0013]
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object thereof is to provide a saddle stitch folding machine that saves space and reduces the cost as a simple configuration.
[0014]
[Means for Solving the Problems]
In the invention according to claim 1, the above-described object is that the saddle stitching machine includes a lift plate that moves up and down, a stitcher that is fixed to the lift plate, and a support plate that is fixed at a lower position and fixes a receiving base of the stitcher. A binding portion that binds a central portion of a sheet bundle positioned between the stitcher and the cradle by lowering of the stitcher by lowering of the lifting plate, a folding knife, and a pair of folding rollers, and the binding portion In a saddle stitch folding machine having a folding portion for projecting a binding position of a bundle of sheets bound by the folding knife and inserting the pair of folding rollers between the pair of folding rollers to bend the binding position. A pair of scoring members that form a folding line at the center of the sheet bundle in which one of the scoring members is fixed to the support plate along with the cradle and the other scoring member is fixed are provided. Configuration and forming a muscle folded at the center thereof and simultaneously binding the central portion of the positioning the sheet bundle between lowered at the stitcher and the receiver at the lowering and the one creasing member of the stitcher according to the descent of the plate Is achieved by doing
[0015]
According to a second aspect of the present invention, in the saddle stitch folding machine according to the first aspect of the present invention, a groove having a substantially V-shaped cross section is formed in one of the pair of reinforcing members, and the other The scoring member is provided with a scoring blade having a projecting portion having a mountain shape in cross section to engage with the substantially V-shaped groove.
[0016]
In the invention according to claim 1, the stitcher that performs the binding process at a predetermined position of the sheet bundle and the creasing member that performs the alignment process at the predetermined position of the sheet bundle are disposed adjacent to the binding unit. , Space can be saved. Further, since the creasing member is connected to the raising / lowering mechanism of the stitcher, the configuration is simplified and the cost can be reduced.
[0017]
Further, since the sheet bundle that has undergone saddle stitching is pre-stitched, folding processing by the folding portion can be sufficiently performed. For this reason, the height of the open side opposite to the side where the folding is applied to the sheet bundle is reduced, that is, the swelling of the sheet bundle is reduced, and the arrangement and handling are facilitated.
[0018]
In the invention according to claim 2, a groove having a substantially V-shaped cross section is formed in one of the pair of scoring members, and the substantially staggered V-shaped groove is formed in the other scoring member. A bracing blade having a projecting portion having a mountain shape in cross section is provided to engage with the groove. For this reason, the creasing can be accurately performed at a predetermined position according to the thickness of the sheet bundle.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the saddle stitch folding machine which is embodiment of this invention is demonstrated. FIG. 6 is a schematic perspective view showing the binding unit 1 of the saddle stitching machine applied to the present invention. In FIG. 6, 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 drive motor, and 5a is an output shaft of the drive motor 5. The first pulley to be connected, 6 is a crankshaft supported on both sides by fixing portions 8a and 8b provided on the support base 4, and 6a is a second pulley connected to the crankshaft 6. Reference numeral 7 denotes a belt which is stretched between the first pulley 5a and the second pulley 6a.
[0020]
Crank arms 9a and 9b are provided at both ends of the crankshaft, and lower connecting portions 10a and 10b are fixed to the crank arms 9a and 9b by crank pins 6b and 6c (not shown). ing. Further, upper connecting portions 11a and 11b (not shown) are connected to the lower connecting portions 10a and 10b by connecting rods 12a and 12b.
[0021]
The pin 11x fixes the crank rod 13a to the upper connecting portion 11a. The crank rod 13b is also fixed to the upper connecting portion by a pin not shown. Reference numeral 14 denotes an elevating plate whose both ends are fixed 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 bases 16a and 16b provided at positions corresponding to the stitchers 2a and 2b.
[0022]
Next, the operation of the binding unit 1 will be described. When the drive motor 5 rotates, the first pulley 5a connected to the output shaft rotates. The rotational force is transmitted through the belt 7 by the rotation of the first pulley 5a, and the second pulley 6a rotates. The crankshaft 6 is rotated by the rotation of the second pulley 6a , and the crank arms 9a and 9b are rotated in conjunction with each other. For this reason, the lower connecting portions 10a and 10b connected to the crank arms 9a and 9b by the crank pins 6b and 6c are lowered.
[0023]
When the lower connecting portions 10a and 10b are lowered, the connecting rods 12a and 12b and the upper connecting portions 11a and 11b are also lowered, and the crank rods 13a and 13b connected to the upper connecting portions 11a and 11b with pins are lowered. When the crankshaft 6 further rotates, the lower connecting portions 10a and 10b are raised, and the crank rods 13a and 13b are also raised.
[0024]
In this way, the rotational motion of the crankshaft 6 is converted into a linear motion, and the crank rods 13a and 13b move up and down. For this reason, the elevating plate 14 having both ends fixed to the crank rods 13a, 13b is also moved up and down, and the stitchers 2a, 2b are moved up and down.
[0025]
A bundle of sheets formed of sheets stacked on the lower cradle 16a, 16b is added by being squeezed by the lower cradle 16a, 16b and the stitcher-2a, 2b when the stitcher-2a, 2b is lowered. The saddle stitching process is performed at a predetermined position, in this example, two places. When the saddle stitching process is completed, the stitchers -2a and 2b are also lifted as the crank bars 13a and 13b are lifted. 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).
[0026]
In this way, in FIG. 6, the elevating mechanism is provided in the binding unit 1a, and the elevating mechanism is operated to perform a predetermined saddle stitching process on the sheet bundle by the stitchers 2a and 2b. In the present invention, a stitching member is provided alongside the stitcher in the binding portion, and the stitching member is operated together with the stitcher using the lifting mechanism, and the stitching process is performed on the sheet bundle simultaneously with the saddle stitching process. This is the basic configuration.
[0027]
FIG. 1 is a perspective view showing an example of a binding portion 1 provided with a streak member along with a stitcher. The same or corresponding portions as those in FIG. 6 are denoted by the same reference numerals. In the example of FIG. 1, elevating blocks 17a and 17b are fixed to the elevating plate 14 on both sides of the stitchers 2a and 2b. Although not shown, the lifting block 17c is fixed to the lifting plate 14 between the stitchers 2a and 2b.
[0028]
Further, fixing blocks 18 a to 18 c are provided at positions corresponding to the lifting blocks 17 a to 17 c and fixed to the support plate 15. Each fixing block 18 a to 18 c, to form a groove having a predetermined width, fitting the creasing blade 19a~19c to the respective fixed blocks 18 a to 18 formed within the groove to c.
[0029]
FIG. 2 is a side view seen from the direction of arrow A with the side wall 3a removed in FIG. Next, although the structure of the raising / lowering block 17a and the fixed block 19a is demonstrated with FIG. 2, the structure of another raising / lowering block and a fixed block is also the same, and description is abbreviate | omitted. As shown in FIG. 2, the elevating block 17a is formed with a groove 17x having a substantially V-shaped cross section.
[0030]
In addition, a protruding portion 19x having a mountain shape in cross section is formed at the distal end portion of the scoring blade 19a. The angle of inclination of the angle is selected so that the angled protrusion 19x of the line insertion blade 19a engages with the V-shaped groove 17x formed in the lifting block 17a. 19y is an elastic member filled in a groove formed in the fixed block 18a. When a pressing force is applied to the projecting portion 19x formed at the tip of the scoring blade 19a, the scoring blade 19a enters the groove while receiving a reaction force by the elastic member 19y.
[0031]
FIG. 3 is a side view showing an example in which a line is placed at a predetermined position of the sheet bundle by the line insertion unit, and corresponds to FIG. When the sheet bundle 24a is carried into the binding portion 1 and the crankshaft 6 is rotated 180 degrees from the state shown in FIG. 2, the lower connecting portion 10a connected to the crank arm 9a by the crank pin 6b is 180 from the position shown in FIG. Moves to the position rotated degree.
[0032]
Accordingly, the crank rod 13a is lowered via the connecting rod 12a, the upper connecting portion 10a, and the pin 11x, and the elevating block 17a of the creasing portion moves in a direction approaching the fixed block 18a. For this purpose, in the sheet bundle 24a, the cross-sectional shape of the scoring blade 19a fitted in the groove portion of the fixed block 18a at a predetermined position is pushed up by the mountain-shaped protruding portion 19x, and the cross-sectional shape formed on the lifting block 17a. Is pushed into the V-shaped groove 17x.
[0033]
When the sheet bundle 24a is pushed into the groove 17x having a V-shaped cross section formed on the elevating block 17a, the sheet bundle 24a and the elevating block 17a are formed on the protrusion 19x having a mountain-shaped cross section of the scoring blade 19a. Therefore, the scoring blade 19a enters the groove portion against the reaction force of the elastic member 19y filled in the groove portion of the fixed block 18a. In this manner, the distance between the chevron-shaped protrusion 19x formed on the scoring blade 19a and the V-shaped groove 17x formed on the elevating block 17a is adjusted, and the sheet bundle 24a is placed at a predetermined position. Streaks (creases) are made.
[0034]
When the elevating block 17a is lifted, the pressing force acting on the scoring blade 19a is released, and the scoring blade 19a is lifted 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 groove portion of the fixed block 18a is filled with the elastic material 19y, the scoring blade 19a moves in the vertical direction in the groove portion of the fixed block 18a according to the thickness of the sheet bundle 24a. The creasing process can be performed at the optimum position. It is also possible to add a sheet with a thickness such as a cover sheet to the sheet bundle and simultaneously streak the sheet bundle and the cover sheet.
[0035]
Similarly, a streak is set at a predetermined position of the sheet bundle by the action of the elevating block 17b and the fixed block 18b, and the elevating block 17c and the fixed block 18c. At the same time as the creasing process, the saddle stitching process is performed on the sheet bundle by the stitchers 2a and 2b as described above.
[0036]
In the present invention, a saddle stitching member is provided along with the stitcher in the binding portion, and the stitching member is also operated simultaneously by the raising / lowering mechanism of the stitcher, so that the saddle stitching process is performed at a predetermined position of the sheet bundle, for example, the central portion. The creasing process is performed at once. In the example shown in FIG. 1, the sheet bundle is subjected to the creasing process at both sides and the center part except for the part that is subjected to the saddle stitching process by the stitcher. Can be done.
[0037]
The sheet bundle 24a subjected to the saddle stitching process is then conveyed to a folding portion as shown in the side view of FIG. 4 through a conveyance path (not shown). A folding knife 21 and folding rollers 22 and 23 are provided in the folding portion. The folding knife 21 is pushed out from the arrow P direction at the position where the saddle stitching process is performed on the sheet bundle 24a, and the folding process is performed.
[0038]
As described above, the creasing is performed in advance at the position where the saddle stitching process is performed on the sheet bundle 24a. For this reason, even if fine alignment is not performed between the position where the saddle stitching process is performed and the position where the folded shape is given, the folded shape can be surely given to the sheet bundle 24a. The folded sheet bundle 24b is conveyed to the next process from the direction of the arrow Q.
[0039]
Further, since the sheet bundle 24a has 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. 5, the numerical value of the height H1 on the open side, which is the side opposite to the side on which the folding is applied by the saddle stitching processing of the sheet bundle 24a, is reduced, and the swelling is reduced. Therefore, it becomes easy to organize and handle.
[0040]
【The invention's effect】
As described above, in the invention according to claim 1, the stitcher that performs the binding process at a predetermined position of the sheet bundle and the creasing member that performs the alignment process at the predetermined position of the sheet bundle are provided in the binding unit. Since it is arranged, space can be saved. Further, since the creasing member is connected to the raising / lowering mechanism of the stitcher, the configuration is simplified and the cost can be reduced.
[0041]
Further, since the sheet bundle that has undergone saddle stitching is pre-stitched, folding processing by the folding portion can be sufficiently performed. For this reason, the height of the open side opposite to the side where the folding is applied to the sheet bundle is reduced, that is, the swelling of the sheet bundle is reduced, and the arrangement and handling are facilitated.
[0042]
In the invention according to claim 2, a groove having a substantially V-shaped cross section is formed in one of the first and second scoring members, and the other scoring member includes: A scoring blade having a projecting portion having a mountain shape in cross section is provided so as to engage with the substantially V-shaped groove. For this reason, it is possible to accurately perform the creasing 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 seen from the direction of arrow A in FIG.
FIG. 3 is a side view showing an example in which a line is placed at a predetermined position of a sheet bundle by a line placing unit.
FIG. 4 is a side view of a folding portion.
FIG. 5 is a side view of a sheet bundle that has undergone saddle stitching processing and has been folded.
FIG. 6 is a schematic perspective view showing a binding portion of a saddle stitch folding machine applied to the present invention.
FIG. 7 is a schematic configuration diagram showing an example of a conventional saddle stitch folding machine.
FIG. 8 is a perspective view of a sheet bundle subjected to saddle stitching processing.
FIG. 9 is a perspective view of an example in which folding processing is performed on a sheet bundle that has undergone saddle stitching processing.
FIG. 10 is a perspective view of a sheet bundle that has been subjected to a saddle stitching process and has been folded.
[Explanation of symbols]
1 Stitcher 2a, 2b Stitcher
5 Drive motor 6 Crankshaft 9a, 9b Crank arm 13a, 13b Crank rod 16a, 16b Lower pedestal 17a-17c Lifting block 18a-18c Fixed block 19a-19c Reinforcing blade 21 Folding knife 22, 23 Pair of folds Roller 24a Paper bundle

Claims (2)

A sheet bundle comprising an elevating plate that moves up and down, a stitcher that is fixed to the elevating plate, and a support plate that is fixed at a lower position and that fixes the cradle of the stitcher, and is positioned between the stitcher and the cradle A binding portion that binds the center portion of the sheet bundle by lowering the stitcher by lowering of the lifting plate, a folding knife and a pair of folding rollers, and the binding position of the sheet bundle bound by the binding portion is projected by the folding knife and the pair of pairs. In a saddle stitch folding machine having a folding portion that is inserted between folding rollers and bends the binding position, the stitch plate is aligned with the stitcher on the elevating plate, and the support plate is aligned with the cradle. A pair of scoring members for forming a folding line is provided at the center of the sheet bundle to which the other scoring member is fixed, and the stitcher is lowered by the lowering of the lifting plate and the one Saddle folding machine in which is characterized in that by forming a crease in the center portion and simultaneously binding the central portion of the positioning the sheet bundle between said at descending creasing member stitcher and said pedestal. A groove having a substantially V-shaped cross-section is formed in one of the pair of line-feeding members, and a cross-sectional shape is formed on the other line-feeding member to engage with the substantially V-shaped groove. The saddle stitch folding machine according to claim 1, further comprising a creasing blade having a chevron-shaped protrusion.

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