JP3281709B2 - Folding blade device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding blade device for a parallel folding machine.

[0002]

2. Description of the Related Art FIG. 4 shows a conventional parallel folding machine for producing a parallel signature and a cut signature cut near a position corresponding to a fold of the parallel signature using a folding cylinder and a holding cylinder. First
A step nip roller 01 and a one-part cutting device 02;
It is composed of a second-stage nip roller 03, a saw cylinder 04, a folding cylinder 05, a gripping cylinder 06, a conveying conveyor 07, an impeller 08, and a discharge conveyor 09, which are fixed to the folding cylinder 05 as shown in FIG. Folding blade device 010, or FIG. 5 (b)
As shown in the figure, a folding blade with an intermittent blade 011 is attached via a rotating folding blade device 010 which swings by a cam, a roller, or the like. The folding blade receiver 014 is attached, and the folding blade 011 with the intermittent blade is inserted up to the rubber bottom of the folding blade receiver with the intermittent blade 014 to prepare a cutting signature.

[0003]

However, as shown in FIG. 6, the folding blade 011 with the intermittent blade grips the cutting signature with the other gripper plate. Intermittent blade portion 0 having portion 011a
11b, when creating a high-quality printed parallel signature, the blade is scratched. In order to prevent such scratching, as shown in FIG. 7, the intermittent blade portion 011b has a flat blade without a blade. Has been replaced.

[0004] The cutting position of the saw blade and the folding blade with the intermittent blade of the above-mentioned conventional partial cutting cutter device, the folding blade,
Fig. 8 shows the shape (position) of the grip plate in the width direction of the web.
Shown in In the figure, reference numeral 015 denotes a grip portion of the gripper plate, 016 denotes a shape of the interrupted blade portion, 017 denotes a shape of the bladeless interrupted blade portion, 018 denotes a cut by the partially cutting cutter device, and 019 denotes a cut by the interrupted blade.

[0005] The present invention has been developed to address the above-mentioned problems, and has as its object to provide a bladed blade which does not damage printed matter.

[0006]

The structure of the present invention for achieving the above object will be described with reference to FIG. 1 corresponding to an embodiment. In the present invention, a folding blade provided on a folding cylinder is provided on a holding cylinder. In a folding blade device which is made to bite into a folded blade receiver, a flat tip portion 3 of the folding blade 1 is provided.
Is characterized in that a blade part 4 is provided in a part of.

Further, the blade portion 4 is formed lower than the flat tip portion 3.

[0008]

According to the present invention, a flat blade of a folding blade having a blade part lower than a part of the flat blade by the above-mentioned means has a flat portion of the folding blade when forming a parallel signature and a cutting signature. Even when inserting the central part of the signature where the fold or cut is made while abutting and sliding, the signature is less likely to be damaged.
Further, since the blade part provided in a part is located at a position lower than the flat part of the folding blade, it does not come into contact with the signature when the folding blade is inserted, so that the signature is not damaged.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. 1. Reference numeral 1 denotes a folding blade, which is a flat tip 3 excluding a notch 2 for holding a gripper portion.
In addition, a blade portion 4 which is partially lower than the tip portion 3 by δ is provided. Thus, when the folding blade 1 is attached to the folding cylinder 5 as shown in FIG. 2 (a) and presses the signature 6 to bite into the folding blade receiver 8 provided on the gripping cylinder 7, the flat tip portion 3 (B)
As shown in (1), the blade abuts on the signature 6 and slips. However, since some of the blades 4 are lower than the tip, they do not contact the signature.

FIG. 3 shows the relationship between the blade portion 4 of the partially cutting cutter device, the folding blade 1 and the holding portion 9 of the holding plate of the holding device in the parallel folding direction. In the drawing, reference numeral 10 denotes a cut by a partially cutting cutter device, and reference numeral 11 denotes a cut by a partially bladed folding blade. Although the blade portion 4 is formed as a saw-tooth blade in the illustrated one, the blade portion 4 may be formed into any shape such as a straight blade or a saw blade.

[0011]

As described above, according to the present invention, the blade is provided with a blade lower than the tip at a part of the flat tip of the blade, so that when the signature is creased or cut, it is smoothly rounded. Only the flat part of the signature abuts the signature and slips.The signature is inserted together with the signature into the holding device.Some blades do not touch the signature, so the signature is not damaged and a signature of high-quality printed matter is created. In addition, there is an effect that a parallel signature and a cut signature can be created only with a partly cut blade.

[Brief description of the drawings]

FIGS. 1A and 1B show an embodiment of the present invention, wherein FIG. 1A is a front view, FIG. 1B is a side view, FIG. 1C is an enlarged view of a portion P, and FIG.

FIGS. 2A and 2B are displacement diagrams of a signature and a folding blade inserted into a holding device by a folding blade, wherein FIG. 2A is a side view and FIG.

FIG. 3 is an explanatory view showing a cutting position of a partially cutting cutter device, a partially bladed folding blade, and a shape (position) of a partially bladed folding blade and a holding plate in the width direction of the web in the present invention.

FIG. 4 is a layout diagram of a folding drum of the parallel folding machine.

5A and 5B are explanatory views showing the structure and engagement state of a folding blade device and a holding device, wherein FIG. 5A is a fixed type and FIG. 5B is a swing type.

6 (a) is a front view, FIG. 6 (b) is a side view, and FIG. 6 (c) is an enlarged view of a P portion.

7A and 7B show a conventional bladeless folding blade, wherein FIG. 7A is a front view and FIG. 7B is a side view.

FIG. 8 is an explanatory view showing a cutting device of a saw blade and a folding blade with an intermittent blade of a conventional partial cutting device and a shape (position) of a folding blade and a holding plate in a width direction of a web.

[Explanation of symbols]

 1 Folded blade 3 Tip 4 Blade

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B65H 45/28 B41F 13/56

Claims (2)

(57) [Claims] 1. A folding blade device in which a folding blade provided on a folding cylinder is bitten into a folding blade receiver provided on a holding cylinder, wherein a blade portion is provided at a part of a flat tip end of the folding blade. A folding blade device. 2. The folding blade device according to claim 1, wherein said blade portion is formed lower than a flat tip portion.