JPH0227260B2 - ORIKI - Google Patents

Description

[Detailed description of the invention]

The present invention relates to an improvement in a folding machine that performs first folding, second folding, and chopping folding. Conventional first bite fold (B4 fold) and second bite fold (B6 fold)
A folding machine that performs folding) and chopper folding (B5 folding) is explained with reference to Figs. 1, 2, and 3. A is a running printing paper, b is a nipping roller, and c is equipped with a folding blade device h and a needle device i. d is a first folding drum equipped with a cutter case j and a gripping device k; e is a second folding drum equipped with a claw device 1 and a folding blade device m that are opened and closed by a cam p; is a second gripping barrel provided with a gripping device n, and is provided with a clutch. In addition, g is a deceleration paper delivery cylinder equipped with a pawl device o, and q
is a paper guide plate with a vertical mechanism to change the ejection direction of the signature, r is a stripper for B6 folded paper ejection,
s is a sheet discharge conveyor with a chopping folding mechanism, and Figure 1 shows the case where a B4 signature is discharged as is or conveyed to a B5 right angle fold (see arrow A).
At this time, the pawl device 1 of the second folding cylinder e is opened and closed at the illustrated position by the cam p. Further, the tip of the paper guide plate q is sunk into a groove provided on the outer circumferential surface of the second folding cylinder e, and is set in a state in which B4 signatures are discharged in a horizontal direction. Also, Figure 2 shows
B6 shows the state at the time of folding, at which time the cam p of the second folding cylinder e is replaced and the claw device 1 is switched to open and close at the illustrated position. Further, the paper guide plate q is set at a position away from the outer circumferential surface of the second folding cylinder e, and after the B4 signature is conveyed to the B6 folding position, it is folded and discharged. . In addition, A ₁ in Figures 1, 2, and 3 is the claw closed position, and A ₂
indicates the release position when folding B4 (B5), and A ₃ indicates the release position when folding B6. The folding machine had the following problems. () When switching between B4 folding (B5 folding) and B6 folding, it is necessary to (1) move the paper guide plate q up and down to lock it, and (2) replace the pawl release cam p. , it is necessary to switch the release timing (see FIG. 3), and the above switching takes time. () When changing the B6 folding dimension (distance marked with * from the tip of the document bitten by the claw device 1 in Fig. 2 to the folding blade device m), (1) the folding blade device of the second folding drum e; It is necessary to move both sets of paper m in the circumferential direction, and (2) it is necessary to move the second gripping cylinder f and the deceleration paper delivery cylinder g by the same amount, and the above change takes time. () When transferring a B4 signature to the claw device 1 of the second folding cylinder e, even if the signature is twisted or misaligned, there is nothing to correct it, resulting in poor B6 folding accuracy. . There was a problem. The present invention addresses the above-mentioned problems.
In a folding machine that performs biting folding, second biting folding, and chopping folding, the first biting folding point between the first biting folding point and the delivery point to the chopping folding provided on the outer periphery of the first biting body A claw device that provides a gripping and releasing position near the gripping cylinder, and grips the first gripping and folding notebook on the outer periphery of a rotating second folding cylinder that contacts the first gripping cylinder at the gripping and releasing position. and a stopper that comes into contact with the tip of the first folding notebook, and the outer diameter of the second folding barrel is made smaller than the outer diameter of the first folding barrel, and the second folding barrel is made smaller in outer diameter than the first folding barrel. This folding machine is characterized in that a folding machine drive system that drives the second folding cylinder and the second folding cylinder at the same angular velocity is provided with a clutch that connects and disconnects the drive of the second folding cylinder, and the object thereof is B4. Switching between folding (B5 folding) and B6 folding can be easily performed in a short time. B6 fold dimensions can be easily changed in a short time. Furthermore, the present invention provides an improved folding machine that can improve B6 folding accuracy (dispersion of folding positions and twisting). Next, the folding machine of the present invention will be explained with reference to an embodiment shown in FIGS. 4 and 5. 1 is a running printing paper, 2 is a nipping roller, 3 is a saw cylinder having a cutter case 9;
4 is a first folding drum having a folding blade device 10 and a needle device 11; 5 is a first biting drum having a gripping device 12 which is opened and closed by a cam 20; 6 is a claw device 14 having a stopper 13 and a folding blade device 15. The second folding cylinder is equipped with a clutch. Further, 7 is a second gripping cylinder with a gripping device 16, 8 is a deceleration sheet discharge cylinder with a pawl device 17, and 18 is a pressing roll for pressing the bottom side of the paper against the surface of the first folding cylinder 4 during B4 folding. 19
21 is a timing roller for pressing the tip of the B4 signature against the stopper 13 protruding from the surface of the second folding cylinder 6 and for sending it to the B5 right-angle folding conveyor belt 24; 21 is a conveying sheet guide plate for B5 right-angle folding; , 22
23 is a stopper for discharging B6 folded paper, and 23 is a paper discharging conveyor. The diameter ratio, rotation ratio (angular velocity), and peripheral speed ratio of each cylinder are as follows.

[Table] Next, the operation of the folding machine will be explained. In the case of B4 folding (B5 right-angle folding), the clutch provided on the second folding drum 6 is released to stop the second folding drum 6 and the rest. The B4 signature is conveyed by the gripping device 12 of the first gripping cylinder 5 to the gripping release position D shown in FIG. transported through. In the case of B6 folding, the switching can be done by simply engaging the clutch of the second folding cylinder 6. That is, the B4 signature released at the grip release position D in FIG. After the misalignment and positional deviation is corrected and the claw device 14 is used, the paper is discharged to the B6 fold. Also, Figure 5 shows
The relationship between the stopper 13 of the second folding cylinder 6, the claw device 14, and the folding blade device 15 is shown. In the same figure 5
When changing the B6 folding dimension (distance marked with * from the paper contact surface of the stopper 13 to the folding blade device 15 in Fig. 5), change the thickness of the shim 25 and
All you need to do is shift the position of the paper. That's the second
The folding drum 6 is decelerated and the folding book is always at the stopper 1.
This is because it is sent until it hits 3. Next, the effects of the folding machine will be explained. () When switching between B4 folding (first biting fold), B5 folding (chipping folding), and B6 folding (second biting folding), the clutch is engaged to connect and disconnect the drive of the second folding drum 6. All you need to do is to perform the cutting operation, which eliminates the need for the paper guide plate switching operation required with the conventional folding machine shown in Figures 1, 2, and 3 above. Switching operations can be made faster. In addition, the timing of the gripping and releasing of the gripping device 12 of the first gripping cylinder with respect to the second folding cylinder 6 can be made the same, and operations such as cam replacement, etc., which were required in the conventional folding machines shown in Figures 1, 2 and 3 above, can be made at the same time. can be made unnecessary. () While making the diameter of the second folding drum 6 smaller than the diameter of the first folding drum 5, driving the first folding drum 5 and the second folding drum 6 at the same rotation ratio (angular velocity), The circumferential speed of the first gripping cylinder 5 is made higher than that of the second folding cylinder 6, and the B4 fold (first gripping fold) signature is transferred from the gripping device 12 of the first gripping cylinder 5 to the folding device 12 of the first gripping cylinder 5. When passing the signature to the pawl device 14 of the two-fold cylinder 6, the tip of the signature can be placed against the stopper 13, and any twist or misalignment of the signature can be corrected, resulting in a B6 fold (second fold).
The folding accuracy of the notebook can be improved. In addition, when changing the dimensions of the B6 fold (second bite fold), it is only necessary to replace the shim 25 of the stopper 13 of the second folding drum 6, and the folding blade device 15 of the second folding drum 6 and the second bite There is no need to move the cylinder 7 deceleration and discharge cylinder 8, etc., and there is an advantage that the change to the B6 fold (second fold) size can be easily performed in a short time. Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to such embodiments, and that various design modifications can be made without departing from the spirit of the present invention. .

[Brief explanation of drawings]

Figure 1 is a side view showing the state of a conventional folding machine when folding B4 (B5), Figure 2 is a side view showing the state of the same folding machine when folding B6, and Figure 3 is a side view of the same folding machine. FIG. 4 is a side view showing an enlarged view of the cam of the second folding cylinder, FIG. 4 is a side view showing an embodiment of the folding machine according to the present invention, and FIG. FIG. 5...First bite cylinder, 6...Second folding cylinder, D...Bite release position, E...First bite breaking point, F...Transfer point to Chiyotsupa folding.

Claims (1)

[Claims] 1 In a folding machine that performs the first biting fold, the second biting fold, and the chopping fold, the period from the first biting folding point to the delivery point to the chopping folding provided on the outer periphery of the first biting body. A grip release position is provided near the first grip cylinder, and the first grip folding signature is placed on the outer periphery of the second fold cylinder which contacts and rotates the first grip cylinder at the same grip release position. A grasping claw device and a stopper that comes into contact with the tip of the first folding folder are provided, and the outer diameter of the second folding cylinder is smaller than the outer diameter of the first folding cylinder, and the second folding cylinder is made smaller in outer diameter than the first gripping cylinder, and
A folding machine characterized in that a folding machine drive system that drives the gripper cylinder and the second folding cylinder at the same angular velocity is provided with a clutch that connects and disconnects the driving of the second folding cylinder.