JPH066461B2 - Two-way simultaneous paper folding machine for signatures - Google Patents

Description

TECHNICAL FIELD The present invention relates to a paper folding machine for a newspaper rotary printing machine, a book rotary printing machine and the like, which is capable of ejecting signatures in two directions at the same time. It is a thing.

<Prior Art and its Problems> Generally, as shown in FIG. 9, the paper folding machine has a retractable needle 1
And a folding cylinder 3 in which the folding blades 2 are alternately arranged at intervals in the circumferential direction, a saw cylinder 5 having a cutting blade, and a gripping cylinder 7 having a folding blade receiver 6, and the needle 1 is used to cut the paper end portion. It is configured such that it is hooked and rotated around the folding cylinder 3, cut by the cutting blade 4, and the cut paper is folded by the folding blade 2 into the folding blade receiver 6 of the gripping cylinder 7.

Further, when different plates A and B are printed alternately, it is necessary to fold both plates A and B, and as shown in FIG. 10, there is a plate cylinder 8 added.

In this arrangement, the plate A is stored in the stack cylinder in the first rotation, and the plate A of the stack cylinder is transferred onto the plate B in the second rotation. Since B has the same length, when folded, the signature B tends to shift and come out.

In order to eliminate such a defect, as shown in FIG. 11, the circumference of the folding cylinder 3 is set to be three times the length of the folded sheet (cut paper) so that the folding cylinder 3 also serves as a stacking cylinder. There is a paper folding machine. With such a paper folding machine, A is always overlaid on B and is folded into the gripper cylinder 7 every other time. And B
Since A is cut longer than that, the edges of the paper will be well aligned when folded.

In any case, since the paper folding machine has only one holding cylinder,
There is a limit to the paper folding speed, and there has been a demand for a paper folding machine having a high processing speed that copes with the printing speed.

Further, since there is only one paper discharge line, there is an inconvenience that the whole must be stopped when a trouble occurs here.

Furthermore, when the plates A and B are printed alternately, the printed matter A and the printed matter B cannot be collected separately.

The present invention has been proposed in view of such circumstances,
An object of the present invention is to provide a two-way simultaneous discharge paper folding machine for a signature, which has a high processing speed and can collect two different printed matters separately.

<Means for Solving Problems> The paper folding machine according to the present invention includes a retractable needle (1) and a folding blade (2).
Folding cylinders (3) that are arranged alternately in the circumferential direction
And a saw cylinder (5) having a cutting blade (4) and gripping cylinders (7A) and (7B) having a folding blade receiver (6), and hook the paper edge with the needle (1) of the folding cylinder. It is configured to rotate around the folding cylinder (3) and cut with the cutting blade (4), and fold the cut signature into the folding blade receiver (6) of the gripper cylinder with the folding blade (2) of the folding cylinder. A paper folding machine, wherein the perimeter of the folding cylinder (3) is an odd multiple of 3 or more of the length of the folding tab, and the needle (1) and the folding blade (2) of the folding cylinder (3) are used. The number of each is an odd multiple of 3 or more, and the angle formed by the line segment connecting the rotation center of the folding cylinder (3) and the rotation centers of the two gripping cylinders (7A) and (7B) is Two gripping cylinders (7A) and (7B) are arranged on the paper discharge side so that the angle of 2) is arranged on the folding cylinder (3), and the cam action part (b1) is located at two places on the circumference. Is a circular fixed cam for folding blades (15B) formed at the gripping cylinder disposition angle, and the cam acting portion (b1) Position the two gripper cylinders (7A) and (7B) at the positions corresponding to the folding cylinder side folding blade supports (6).
The folding cylinder (3) is fixed to the device frame at a side portion thereof, and the circular cams (15A) for needles having the cam acting portions (a1) formed at the two peripheral portions at the gripping cylinder arrangement angle are attached to the cam. The folding cylinder is so positioned that the action portion (a1) is located at a position corresponding to the two needles (1) that precede the folding blade (2) in the folding cylinder side folding blade receiver (6). A circular fixed cam (16A) for needles, which is fixed to the device frame at the side of (3), and has a cam acting portion (a2) formed at two places on the peripheral portion at the above-mentioned holding cylinder disposition angle, and the peripheral portion 2. Circular cams (16B) for folding blades, in which cam action parts (b2) are formed at the gripping cylinder disposition angle, are rotatably provided at the sides of the folding cylinder (3). When (3) rotates 2 / (an odd multiple of 3 or more), the folding cylinder (3) and each rotation so that the circular needle rotation cam (16A) and the folding blade circular rotation cam (16B) rotate once. Connected with the cams (16A) and (16B). It is rotatably connected, and each time the folding cylinder (3) rotates 2 / (an odd multiple of 3 or more), two cam action parts (b1) and two cam action parts (b2) for the folding blade.
And the two folding blades (2) facing the folding blade receivers of the two holding cylinders (7A) and (7B) are projected together, and the two cam action portions (a1) and 2 for the needle are Two cam action parts (a
2), the two needles (1) preceding the two folding blades (2) are configured to be retracted, respectively, so that the two sheets can be discharged simultaneously in two directions.

<Example> Hereinafter, the present invention will be described based on an illustrated example.

In FIG. 1, a folding cylinder 3, a saw cylinder 5, a gripping cylinder 7, and a nipping roller 9 are helical teeth 10 and 1 having the same diameter, respectively.
1, 12 and 13 (shown in the same circle), the drive source is driven synchronously by a helical gear 14.

The circumference of the folding cylinder 3 is three times the length of the folding tab (cut paper),
The circumference of the saw cylinder 5 is twice the length of the folding tab and the diameter of the folding cylinder 3 is 1.5 times the diameter of the saw cylinder 5. When the saw cylinder 5 makes one rotation, the folding cylinder 3 makes 2/3 rotations. Is configured.

Two cutting blades 4 are arranged on the saw body 5 and two signatures are produced in one rotation. The folding cylinder 3 is provided with three needles 1 and three folding blades 2 at equal intervals, and the needles 1 and the folding blades 2 are alternately positioned.

The gripper cylinder has a folding blade placement interval (1
The two grippers are arranged at an angle of 20 °, and the upper gripper cylinder 7A, the lower gripper cylinder 7B and the saw cylinder 5 are equally spaced (120 mm).
)) To place.

In such an arrangement, in the state as shown in FIG. 1, the folding blades 2 located on the two gripper cylinders 7A, 7B are both projected, and the two needles 1 preceding the folding blades 2 are retracted, It is possible to discharge paper in two directions at the same time, and the above-described operation is performed every time the folding cylinder 3 rotates 2/3.

In order to achieve such operation, FIGS.
As shown in the figure, the needle fixed cam 15A, the needle rotation cam 16A, and the folding blade fixed cam 1 provided on the side of the folding cylinder.
5B, the folding blade rotating cam 16B is used to retract the needle 1 and the folding blade 2.

As shown in FIG. 5, the needle 1 has a rubber 17 for receiving the cutting blade 4, and an arm 19 is attached to an operating shaft 18 which is rotatably supported.
A large number of them are arranged via the damper 20 and are constantly urged by the damper 20 and the spring 21 in the retracting direction. Further, at the end of the operating shaft 18, the fixed cam 15A and the rotary cam 1
6A, cam followers 23A, 24A, 25A that are in rolling contact with a hand-turning cam 22 (described later) are connected via a lever 26, and the needle 1 is projected on the convex surface of the cam and is retracted by the concave portion. Therefore, the needle 1 is retracted only when the concave portions of the three cams are all aligned.

Next, as shown in FIG. 6, the folding blade 2 is a thin blade, which is attached to the front surface of a support bar 27 which is rotatably supported by a bolt and is urged by a damper 28 and a spring 29 in a direction of popping out. Has been done. Furthermore, the support bar 2
At both ends of 7, there are cam followers 23B and 24B which are in rolling contact with the fixed cam 15B, the rotating cam 16B and the hand-turning cam 22.
And 25B are connected via a lever 30, and contrary to the case of the needle 1, the convex blade of the cam pulls in the folding blade 2 and the concave portion jumps out. Therefore, the folding blade 2 pops out only when the recesses of the three cams are all aligned.

As shown in FIG. 2, the fixed cams 15A and 15B are fixed to the device side plate, and as shown in FIG. 4, the needle fixed cam 15A has two sheets on the paper discharge side in FIG. A recess a1 is formed at a position corresponding to the needle 1.

Similarly, the fixed cam 15B for the folding blade is also formed with a recess b1 at a position corresponding to the two folding blades 2. However, the position of the needle 1 and that of the cam follower 23A are almost the same, but Since the position of the cam follower 23B is displaced (see FIG. 3), it is displaced accordingly.

Next, as shown in FIG. 4, the rotary cams 16A, 16B are formed with recesses a2, b2 having a certain allowable range, and the recesses a2, b are formed every 2/3 rotation of the folding cylinder 3.
Rotate so that the two folding blades 2 project and the two needles 1 retract so that 2 corresponds to the recesses a1 and b1, respectively.

For this purpose, the rotating cams 16A and 16B may be rotated once while the folding cylinder 3 is rotated 2/3, in other words, it may be rotated 1.5 times faster than the folding cylinder 3. Therefore, as shown in FIGS. 1 and 2, the rotary cams 16A, 16
A gear 31 having the same diameter as the gear 11 of the saw cylinder is provided in B, and the gear 11
And the gear 31 may be connected by transmission gears 32 and 33.

The position of the cam shown in FIG. 4 is an initial setting position corresponding to the arrangement of the needle 1 and the folding blade 2 in FIG. 1, and at this position, the fixed cams 15A and 15B and the rotary cams 16A and 16B are located.
Is attached such that the centers of the recesses a1 and a2 coincide, and the centers of the recesses b1 and b2 coincide. Every time the folding cylinder 3 rotates 2/3 times, the rotary cams 16A and 16B move one time.
By rotating, the recesses a1 and a2 and the recesses b1 and b2 coincide with each other.

By using the fixed cam 15 and the rotating cam 16 as described above,
It is possible to simultaneously discharge the paper in the upper and lower two directions every 2/3 rotation of the folding cylinder 3.

Next, in addition to such two-way simultaneous paper discharge, in the case of carrying out folding of signatures, a hand-turning cam 22 as shown in FIG. 4 (e) may be used.

The hand-turning cam 22 is formed with a needle recess 22a that can be aligned with the two recesses a1 of the needle fixed cam 15A, and a folding blade recess 22b that can be aligned with the recesses b1 of the folding blade fixed cam 15B. Then, in the state of Fig. 4 (e), 3
The recesses of the two cams 15, 16 and 22 all coincide with each other, and the two needles 1 and the folding blades 2 are operated at the same time so that two-way simultaneous paper ejection is performed.

Next, in the case of stacking and folding, as shown in FIG. 7, the gripper cylinder 7A at the upper stage or the lower stage at every 2/3 rotation of the folding cylinder 3,
Since the folding is brought to the 7B position, the manual cam 22 can be used to stack the signatures from the upper or lower stage and selectively discharge the sheets.

That is, when it is desired to eject the paper from the upper gripping cylinder 7A, the hand-turning cam 22 is rotated 90 ° to the right from the state of FIG. 4 (e) to the state of FIG. 4 (f). Every 2/3 rotation of 3, the upper recesses a1 and a2 and the recess 22a are aligned, and the upper recesses b1 and b2 are aligned with the recess 22b, and only the upper needle 1 and the folding blade 2 are actuated. You can stack and stack signatures from the chisel.

When rotated to the left by 90 ° to the state shown in FIG. 4 (g), only the lower side needle 1 and the folding blade 2 are operated in the same manner as described above, and the signatures can be stacked and discharged from only the lower side.

As shown in FIGS. 2 and 8, the hand-turning cam 22 is rotated by a fan gear 34, a hand-turning gear 35, and a handle 36. The handle 36 is rotated 180 ° to the right or left from the two-way simultaneous paper discharge position. When rotated, the hand-turning cam 22 is rotated 90 ° to the right or left so that the sheet can be stacked and ejected from the upper or lower part.
Further, the hand-turn cam 22 is fixed by fixing the handle 36 with the fixing knob 37.

<Effects of the Invention> As described above, according to the present invention, the circumference of the folding cylinder is set to an odd multiple (3, 5, 7, ...) Of the length of the folding sheet (cut paper), and the gripping cylinder is Two folding blades are provided, which are located in two gripper cylinders every time the folding cylinder rotates 2 / odd times (3,5,7, ...) by the fixed cam and the rotating cam. Since the two staples are operated at the same time, the signature can be discharged in two directions at the same time, and the processing speed can be improved as compared with the conventional case. Furthermore, it is possible to collect different printed matter separately.

In addition, since fixed cams and rotating cams are used for the needle and the folding blade, respectively, and the specified operation is performed when both cams match, if the folding machine causes a trouble such as paper jam, it can be restored. The timing adjustment can be easily adjusted based on the fixed cam.

[Brief description of drawings]

FIG. 1 is a schematic view showing a configuration of a cylinder and gears of a paper folding machine according to the present invention, FIG. 2 and FIG. 3 are longitudinal sectional views, transverse sectional views and FIG. 4 showing a folding cylinder of a paper folding machine. (A) to (g) are schematic views showing the shapes and positional relationships of various cams, FIG. 5 (A) is a front view showing a segment in which a needle is provided, and FIG. 5 (B) shows a needle operating mechanism. Fig. 5 (C) is a cross-sectional view, Fig. 5 (C) is a schematic view of the cam mechanism of the needle as seen from the inside of the barrel, Fig. 6 (A) is a front view showing a segment in which a folding blade is provided, and Fig. 6 (B) is FIG. 6 (C) is a schematic view of the cam mechanism of the folding blade as viewed from the inside of the case, and FIGS. 7 (I) to (III) show the case of stacking folding. FIG. 8 is a schematic front view showing a mechanism for rotating a hand-turning cam, FIG. 9 is a conventional general paper folding machine, and FIGS. 10 and 11 are conventional folding paper folding machines. is there. 1 ... Needle, 2 ... Folding blade, 3 ... Folding cylinder, 4 ... Cutting blade, 5 ... Saw cylinder, 6 ... Folding blade receiver, 7, 7A, 7B ... Holding cylinder, 8 ...
Stacking cylinder, 9 ... Nipping roller 10, 11, 12, 1
3 ... helical gear, 14 ... drive source helical gear, 15A, 1
5B: Fixed cam, 16A, 16B ... Rotating cam, 17 ... Rubber, 18 ... Operating shaft, 19 ... Arm, 20 ... Damper, 2
1 ... Spring, 22 ... Handwheel cam, 23A, 24A,
25A ... Cam follower, 23B, 24B, 25B ... Cam follower, 26 ... Lever, 27 ... Support bar, 28 ... Damper, 29 ... Spring, 30 ... Lever, 31 ... Gear,
32, 33 ... Transmission gear, 34 ... Fan gear, 35 ... Handwheel, 36 ... Handle, 37 ... Fixed knob.

Claims (1)

[Claims] 1. A saw cylinder (5) having a folding blade (3) in which a retractable needle (1) and folding blades (2) are alternately arranged at intervals in the circumferential direction, and a cutting blade (4). And a gripper (7) with a folding blade receiver (6)
Equipped with (A) and (7B), hook the edge of the paper with the needle (1) of the folding cylinder, rotate around the folding cylinder (3), cut with the cutting blade (4), and fold the cut signature. A paper folding machine configured to be folded by the folding blade (2) of the cylinder into the folding blade receiver (6) of the gripping cylinder, wherein the circumference of the folding cylinder (3) is an odd multiple of 3 or more of the length of the signature. And the number of needles (1) and folding blades (2) of the folding cylinder (3) are each an odd multiple of 3 or more, and the center of rotation of the folding cylinder (3) and the two holding cylinders (7A) ), (7B), so that the angle formed by the line segment connecting the center of rotation is the same as the angle at which each folding blade (2) is arranged on the folding cylinder (3), the two gripper cylinders (7A), (7B) is disposed on the paper discharge side, and the circular blade fixed cams (15B) for folding blades, which are formed with cam action portions (b1) at the two peripheral portions at the gripper cylinder arrangement angle, (b1) corresponds to the folding cylinder side folding blade receivers (6) of the two gripper cylinders (7A) and (7B) respectively. So as to be positioned at the position,
The folding cylinder (3) is fixed to the device frame at a side portion thereof, and the circular cams (15A) for needles having the cam acting portions (a1) formed at the two peripheral portions at the gripping cylinder arrangement angle are attached to the cam. The folding cylinder is so positioned that the action portion (a1) is located at a position corresponding to the two needles (1) that precede the folding blade (2) in the folding cylinder side folding blade receiver (6). A circular rotary cam (16A) for needles, which is fixed to the device frame at the side of (3), and has a cam acting portion (a2) formed at the two peripheral portions at the above-mentioned grip barrel arrangement angle, and the peripheral portion 2 Circular cams (16B) for folding blades, in which cam action parts (b2) are formed at the gripping cylinder disposition angle, are rotatably provided at the sides of the folding cylinder (3). When (3) rotates 2 / (an odd multiple of 3 or more), the folding cylinder (3) and each rotation so that the circular needle rotation cam (16A) and the folding blade circular rotation cam (16B) rotate once. Connected with the cams (16A) and (16B). It is rotatably connected, and each time the folding cylinder (3) rotates 2 / (an odd multiple of 3 or more), two cam action parts (b1) and two cam action parts (b2) for the folding blade.
And the two folding blades (2) facing the folding blade receivers of the two holding cylinders (7A) and (7B) are projected together, and the two cam action portions (a1) and 2 for the needle are Two cam action parts (a
A two-way simultaneous discharge paper folding machine for signatures, characterized in that the two needles (1) preceding the two folding blades (2) are respectively retracted in conformity with (2).