JPH02221063A - Guide brush device for folding machine - Google Patents

Abstract

PURPOSE:To guide paper appropriately even at optional operating speed by making a brush base member deformable and maintaining its shape by means of a supporting means, thereby conforming a guide brush to the behavior of the paper. CONSTITUTION:A guide brush 31 is formed of a short-volume plate-formed brush base member 32 made of deflectable material such as synthetic resin for instance and numerous hair 33 planted at one face of this brush base member. Plural pieces of this guide brush 31 are disposed along the direction of the rotation axis of a folding drum 17 and a gripping drum 18. The brush base member of each guide brush 31 is slidably supported in the longitudinal direction by holding members 34 in the proximity of both longitudinal ends. That is to say, a holding member has a box like sectional form with a released part where the hair of the guide brush passes, the brush base member is fitted into the box-formed space in such a way as to be relatively movable along its longitudinal direction, and this holding member is rotatably supported at a fixedly supporting rod 35 hung across a frame along the direction parallel to the rotation axes of the drums 17, 18.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a guide brush device for guiding paper transferred from one cylinder to the next in a filter folding machine attached to a rotary printing press.

<Prior Art> A web rotary printing press is equipped with a folding machine that cuts or folds a printed web. FIG. 7 is a schematic diagram of a conventional folding machine. As shown in FIG. 7, after printing, the web 11 is pulled downward by a drag roller 12 and folded in half in the width direction by a triangular former 13. As shown in FIG. The half-folded web 11 is fed between the cutting cylinder 16 and the folding cylinder 17 via the lead roller 14 and the nipping roller 15, where it is cut into a predetermined size and roughly folded into g417.
18 in a direction perpendicular to the former fold to form a signature. This signature is then fed into signature transport device 19.

The signatures conveyed by the signature conveyance device 19 are discharged onto a paper discharge conveyor 21 by an impeller 20 and carried out of the machine. On the other hand, in the middle of the signature conveying device 19, a selectively used folding flap 22 is disposed, and the signatures folded by the flap 22 are transported from the impeller 23 onto the discharge conveyor 24. Be released to.

Here, the behavior of the cut paper transferred from the folding cylinder 17 to the gripper cylinder 18 is as follows. That is, as shown in FIG. 8 (al), the cut paper 26 that has been conveyed to the folding cylinder 17 by the needle 25 is held in its center by the gripping plate of the gripping cylinder 18 as shown in FIG. 8 (bl). It is transferred to the cylinder 18 side.At this time, as shown in FIG. This tip P becomes extremely unstable during the transfer process to the gripper 11R18.

Therefore, in the past, as shown in Figures 7 and 8 (as shown by the mountains),
The guide brush 2 is placed between the gripper body 17 and the gripper body 18.
7 is disposed, and this guide brush 27 presses the cut paper 26 to prevent it from flapping.

<Problem to be solved by the invention> However, in recent years, as printing presses have become faster, the conventional idle brush 27 is able to cut paper 2 sufficiently at medium/low speeds and at high speeds.
A situation has arisen in which it is not possible to guide 6. That is, when the conveyance speed of the cut paper 26 is relatively slow and when it is high,
The cut paper 26 is transferred from the folding cylinder 17 (to the feeding cylinder 18).
behavior will be different. Therefore, if the guide brush 27 is shaped to match its behavior at high speeds, it will not be able to guide the cut paper 26 sufficiently when operating at medium or low speeds, causing the trailing edge of the paper to flap, fold, or break. . On the other hand, if the guide brush 27 is shaped to match the behavior at medium and low speeds, excessive force will be applied to the cut paper 26 during high speed operation, and the tail of the paper will be agitated by inertia, causing it to break, break, etc. In addition, the guide brush 27 may rub the guide brush 27 and cause scratches.

The present invention solves these problems with conventional guide brushes, and aims to provide a guide brush device that can properly guide paper in all speed ranges from low speeds to high speeds. It is said that

Means for Solving the Problems> A guide brush device for a folding machine according to the present invention that achieves the above-mentioned object is a guide brush device for a folding machine that guides paper released from one cylinder to the next cylinder. a guide brush configured to be able to change the shape of a brush base material that supports the hairs;
The present invention is characterized by comprising a support means for maintaining the shape of the brush base material in a plurality of types of shapes.

Effect〉 By deforming the brush base material and maintaining its shape with the support means, the guide brush can be shaped to match the behavior of the paper, so that the guide brush can properly operate at any operating speed. Guide the paper.

Practical example Embodiments of the present invention will be specifically described below with reference to the drawings.

Fig. 1 is a schematic configuration diagram of an embodiment of the present invention, Fig. 2 is an explanatory diagram of its operation, Fig. 3 is a 1-1 sectional view of Fig. 1, and Fig. 4 is F/-1t of Fig. 1. /It is an arrow view.

As shown in FIG. 1, the guide brush 31 is disposed so as to straddle between the folding cylinder] 7 and the gripper cylinder 18, as in the conventional case. The guide brush 31 includes a strip-shaped brush base material 32 made of a flexible material such as synthetic resin, and a large number of bristles 33 planted on one surface of the brush base material 32. A plurality of the same guide brushes 31 are arranged along the direction of the rotational axis of the dual use 17, 18.

The brush base material 32 of each guide brush 31 is supported by a holder 34 at a position near both ends thereof in the longitudinal direction so as to be freely slidable in the longitudinal direction. That is, as shown in FIG.
4 has a box-shaped cross-sectional shape in which the part through which the guide brush 310 bristles 33 pass is open, and the brush base material 3z is placed in the box-shaped cavity.
are fitted so that they can move relative to each other along their longitudinal direction. The holder 34 is rotatably supported by a support rod 35 that is fixed to a frame (not shown) in a direction parallel to the rotational axes of the barrels 17, 18.

Further, a bracket 36 having a hole is provided protruding from the longitudinal center portion of the back surface of each brush base material 32. As shown in FIG. 4, a common connecting rod 37 rotatably passes through each of these brackets 36, and both ends of the connecting rod 37 are supported by rods 39 of a cylinder 38, respectively. These cylinders 38 are fixed to a frame (not shown).

As shown in FIG. 1, each cylinder 38 is connected to a control panel 40 that controls its expansion and contraction.

In such a configuration, each guide brush 31 is supported by the holders 34 at both ends and the cylinder 38 at the center, and is maintained in a constant shape. Here, when the rod 39 of the cylinder 38 is in an extended state as shown in FIG. 1, the guide brush 31 has a relatively tapered shape with the center portion protruding toward the barrel 17, 18 side. On the other hand, when the rod 39 of the cylinder 38 is shortened, as shown in FIG. 2, the amount of protrusion at the central portion is reduced, and the guide brush 31 has a relatively straight shape with less bending. Therefore, controller l#4
By controlling the operation of the cylinder 38 by using 0, the shape of the guide brush 31 can be arbitrarily deformed.

FIG. 5 is an explanatory diagram showing the behavior of the cut paper 26 and the optimal brush shape corresponding thereto.

Now, in the case of medium/low speed operation, as shown in FIG. 5(a), the paper tail of the cut paper 26 is delivered relatively along the circumference of the image scale of 17°18. Therefore, in this case, Figure 5 (b
), the guide brush 31 also has a curved shape so that the center part fits between the dual use parts 17 and 18, so as to follow the shape of the guide brush 31. On the other hand, in the case of high-speed operation, Figure 5 (
As shown in FIG. 0), the trailing edge of the cut paper 26 moves relatively straight to the gripper cylinder 18. Therefore, in this case, Figure 5 (
As shown in dl, the rod 39 is retracted to deform the guide brush 31 into a straight line along its shape.

By doing so, the cut paper 26 can always be properly guided at medium/low speeds and high speeds.
It is possible to prevent problems such as folds and scratches on signatures.

Incidentally, in the above embodiment, the cylinder 38 is used as a support means for maintaining the shape of the brush base material 32 in a desired shape. In the above-described embodiment, the cylinder 38 can take two states, the extended state and the shortened state, but this is used as a cylinder in the position designation phase, and it can be used not only in the two states of medium/low speed and high speed, but also in the intermediate speed. It is also possible to perform more precise control by gradually changing the shape of the guide brush 31.

Furthermore, it is also possible to use not only a cylinder but also an electromagnetic drive device such as a stepping motor or a solenoid. FIG. 6 is an example in which a stepping motor is used to enable more precise control.

That is, in this example, as shown in FIG. 6, the rack companion 41 is rotatably connected to the connecting rod 37, and
is supported on a frame (not shown) so that it can move up and down,
A binion 43 of a stepping motor 42 fixed to the frame is engaged with this rack. Also,
In order to more precisely control the deformation of the brush base material 32, two sets of rack companions 41, stepping motors 42, etc. are provided.

Therefore, according to this embodiment, each stepping motor 4
By controlling the brush base material 32 independently, the brush base material 32 can be deformed into a complicated shape, and can be accurately controlled according to the behavior of the cut paper 26.

On the other hand, in each of the embodiments described above, the cylinder 38 or the stepping motor 42 can be automatically operated according to conditions such as speed, but screws are used as a support means to maintain the shape of the brush base material 32 in a desired shape. It may also be operated manually using a shaft or the like.

Furthermore, the brush base material only needs to be configured so that its shape can be deformed, and it may not only be made of the above-mentioned flexible elastic body, but also one in which rigid bodies are connected in a deformable manner such as a link mechanism. You can. On the other hand, the bristles supported on the brush base material are not limited to those that are flocked thereon, but may be formed integrally with the brush base material, or may be attached to the brush base material that is flocked on a separate member. .

In addition, in the explanation of the above-mentioned embodiment, the folding cylinder 17 and the gripper 1I
An example in which the main guide brush 31 is provided between It is also useful to use it between the gripper and the second gripper cylinder.

<Effects of the Invention> As described above in detail with reference to embodiments, according to the present invention, the shape of the brush base material is made variable and it is maintained in a desired shape by the support means, so that Even when the operating conditions of the machine change and the behavior of the paper changes, it is possible to always guide the paper in an appropriate shape, thereby preventing the occurrence of problems such as folds and scratches on signatures.

[Brief explanation of the drawing]

Fig. 1 is a schematic configuration diagram of an embodiment of the present invention, Fig. 2 is an explanatory diagram of its operation, Fig. 3 is a sectional view taken along the line ■-■ in Fig. 1, and Fig. 4 is a PI-N arrow in Fig. 1. 5 is an explanatory diagram showing the behavior of cut paper and the optimal brush shape corresponding thereto, FIG. 6 is a schematic diagram of another embodiment of the present invention, and FIG. 7 is a schematic diagram of a conventional folding machine. The configuration diagram and FIG. 8 are explanatory diagrams showing the behavior of cut paper. In the drawing, 31 is a guide brush, 32 is a brush base material, 33 is a bristles, 34 is a holder, 38 is a cylinder, 41 is a rack companion, 42 is a stepping motor, and 43 is a binion. Figure 4 Figure 5 (b) Figure 2 Figure 6 Figure 7

Claims (1)

[Claims] In the guide brush of a folding machine that guides paper released from one cylinder to the next cylinder, the guide brush is configured such that the shape of the brush base material supporting a large number of bristles can be deformed, and the A guide brush device for a folding machine, comprising a support means for maintaining the shape of a brush base material.