JPH0221480Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a folding machine that can be applied to a rotary printing press.

(Prior Art) An example of a conventional folding machine for a rotary printing press is shown in FIG. 7. The device shown in FIG. It is composed of a folding cylinder 7a containing a needle device 5a and a folding blade device 6a, a gripping cylinder 10a containing a cutter case 8a and a gripping device 9a, and a paper discharge cylinder 12a containing a claw device 11a. There is. Then, the printing paper 1 passes through the triangular plate 2 and passes through the nipping roller 3.
The cutter case 8a and saw blade holder 4a
is cut to a certain length.

During non-overlap folding, the cut printing paper 1 is penetrated by the needle device 5a and wound into the folding cylinder 7a side.
The rolled up printing paper 1 is folded to 1/2 of the cutting length by the folding blade device 6a and the gripping device 9a. The folded printing paper 1 is placed in the grip cylinder 10
The paper is discharged from a through the paper discharge cylinder 12a.

Furthermore, during non-overlapping folding, by replacing the needle cam 13a that operates the needle device 5a and the folding blade cam 14a that operates the blade device 6a with a cam for multiple folding, the printing paper 1 can be Needle device 5
After two sheets are stacked at a, the sheet is folded and discharged from the gripper cylinder 10a via the sheet discharge cylinder 12a.

However, in the conventional folding machine, it is necessary to replace the cam to switch between overlapping folding and non-overlapping folding, which is not only troublesome but also time consuming.

(Problems to be solved by the invention) The present invention solves problems such as the conventional troublesome and time-consuming cam replacement required to switch between overlap folding and non-overlap folding. This allows switching between folding and folding to be performed easily in a short period of time.

(Means for solving the problem) For this reason, the present invention provides a stacked cylinder that sandwiches the printing paper between a sawtooth receiver and a folding cylinder having a needle device, and the stacked cylinder has a needle device and a phase shifter. An adjustment device is provided, and the phase adjustment device changes the phase of the stacked cylinders so that the tip of the needle at the needle position of the stacked cylinders is aligned with the cutting position or the needle hole position of the printing paper. .

(Function) First, during stack folding, the printing paper is delivered from the folding cylinder to the needle device built into the stacking cylinder, and the delivered printing paper is stacked on the printing paper that is then conveyed to the folding cylinder.
The paper is ejected through a folding cylinder, a gripper cylinder, and a paper delivery cylinder. Next, when folding is not done, the phase of the stacked cylinder is changed using the phase adjustment device, and when the tip of the needle of the stacked cylinder is aligned with the cutting device or the needle hole position of the printing paper, the printing paper comes off the needle of the stacked cylinder. The paper is not transferred from the folding cylinder to the stacking cylinder, but is ejected via the gripping cylinder and the ejecting cylinder.

(Embodiment) An embodiment of the present invention will be explained below with reference to the drawings. Fig. 1 is a schematic diagram of a folding machine showing an embodiment of the invention, and Figs. 2 to 5 show the relationship between the printing paper 1 and the needle hole position. FIG. 6 is a perspective view of a phase adjustment device for stacked cylinders. Now, the apparatus shown in Fig. 1 consists of a printing paper 1, a triangular plate 2, a nipping roller 3, and a cutter case 4.
A saw barrel 5 with a built-in saw blade holder 6 and a needle device 7
and a folding drum 9 incorporating a folding blade device 8;
It is composed of a stacking cylinder 11 containing a needle device 10, a gripping cylinder 13 containing a gripping device 12, and a paper discharge cylinder 15 containing a claw device 14. A phase adjustment device (FIG. 6) is installed in the stacked cylinder 11. Note that in the figure, a indicates the folding cylinder needle hole, and b indicates the stacking cylinder needle hole.

Next, the operation of the embodiment configured as above will be explained. In FIG. 1, during double folding, the printing paper 1 drawn into the nipping roller 3 via the triangular plate 2 is moved between the cutter case 4 and the saw blade holder. The printing paper 1 cut into a certain length by the folding cylinder 9 and cut by the needle device 7 built in the folding cylinder 9 is conveyed, and the folding cylinder 1
Printed paper 1 is delivered to a needle device 10 built in 1. When the delivered printing paper 1 encounters the folding cylinder 9 again, it is stacked on the printed paper 1 conveyed by the needle device 7, and conversely is delivered from the stacking cylinder 11 to the folding cylinder 9, and then passed through the gripping cylinder 13 and the paper ejecting cylinder. It is discharged through the cylinder 15.

Next, at the time of non-overlapping folding, as shown in FIG. The phase of can be changed. As shown in FIGS. 4 and 5, by changing the phase of the stacked cylinder 11, when the tip of the needle of the stacked cylinder 11 is aligned with the cutting position of the printing paper 1, the printing paper 1 is cut from the needle of the stacked cylinder 11. Comes off, folded barrel 9
The sheets are discharged from the folding cylinder 9 via the gripper cylinder 13 and the discharge cylinder 15 without being transferred to the stacking cylinder 11.

(Effects of the Invention) Since the present invention is constructed as described in detail above, it does not have the drawbacks of the prior art. That is, conventionally, the cam was replaced to switch between overlapping folding and non-overlapping folding, but since a phase adjustment device is installed on the stacking cylinder of the present invention, the phase of the needle on the stacking cylinder can be adjusted to the cutting position of the printing paper or can be changed to the needle hole position, and without replacing the cam, it is possible to easily switch between non-overlapping folding, in which paper is delivered to the stacking cylinder, and folding, which bypasses the stacking cylinder, in a short time.

[Brief explanation of the drawing]

Fig. 1 is a side view of a folding machine for a rotary printing press showing an embodiment of the present invention, and Fig. 2 is a view taken from arrow A in Fig. 1 when printing paper is transferred from the folding cylinder to the stacking cylinder during overlap folding. , FIG. 3 is a view in the direction of arrow A in FIG. 1 showing the folding cylinder needle hole and the overlapped cylinder needle hole in the case of FIG. The figure is a view in the direction of arrow A in Figure 1 showing the folding cylinder needle hole and the overlapped cylinder needle hole in the case of Figure 4, and Figure 6 is a view in the direction of arrow B in Figure 1, which is a perspective view of the phase adjustment device for the overlapped cylinder. 7 are side views of a conventional folding machine for a rotary printing press. Explanation of the main parts of the figure, 1... Printing paper, 9... Folding cylinder, 10... Needle device, 11... Layered cylinder, 17, 1
8...Gear.

Claims (1)

[Scope of utility model registration request] A stacked cylinder that sandwiches the printing paper between a sawtooth receiver and a folding cylinder having a needle device is provided, and the stacked cylinder is equipped with a needle device and a phase adjustment device, and the phase adjustment device adjusts the needle position of the stacked cylinder. A folding machine characterized in that the phase of the stacked cylinder is changed so that the tip of the needle is aligned with the cutting position of the printing paper or the position of the needle hole.