JPH0638851Y2 - Chopper folding machine - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a chopper folding machine for performing chopper folding in a flat-plate rotary printing machine, etc., and in particular, has a function of suppressing the fluttering of a copybook during chopper folding. Regarding chopper folding machine.

[Conventional technology]

As shown in FIGS. 4 to 6, the conventional chopper folding machine of a flat-fed rotary printing machine is equipped with a belt 2 and a belt 2 for carrying a copy 1.
A book 1 conveyed by a board 3 and a belt 2 that support the
Gate 4 that stops the machine, the copy book 1 that is stopped by the gate 4
It has a chopper 5 for folding the chopper, a chopper arm 7 which supports the chopper 5 and swings about a support shaft 6, a presser foot retainer 8 for pressing the upper surface of the presser 1 and the like.
The presser foot retainer 8 comprises a support plate 9, a leaf spring 10 attached to the support plate 9, and a pressing adjustment screw 11 for adjusting the pressing force of the leaf spring 10 on the presser. 10 is pressed against the upper surface of the book, and functions to hold down the book.

[Problems to be solved by the device]

However, in such a conventional configuration, when the printing plate collides with the gate 4 and stops, there may be fluttering, and the position of the printing plate may be misaligned or clogging may occur, and the speed of the folding machine may be low (for example, about 350 rpm). However, even if the printing section of the printing machine has a high-speed processing capability (for example, about 500 rpm), there is a problem that it must be operated at a low speed according to the capacity of the chopper folding machine.

As a result of earnest studies to solve the above-mentioned problems, the present inventors have found the following matters. In other words, when the brush collides with the gate and stops, the rear part tends to move forward due to its own inertia even though the tip of the brush is stopped, and the entire part tends to deform in a wavy manner and flap. However, in the conventional presser foot retainer 8, since the leaf spring 10 only presses the presser at one position in the transport direction, it is not possible to sufficiently prevent the corrugated deformation of the presser, resulting in fluttering or bending. However, if the printed book is pressed at a plurality of positions separated in the conveying direction, it is possible to prevent the printed book from wavy deformation and suppress fluttering.

The present invention has been made based on such knowledge. When the printed book collides with the gate and stops, the printed book is held at a plurality of positions apart from each other in the conveying direction, thereby suppressing the fluttering of the printed book and increasing the speed. It is an object to provide a chopper folding machine that can be upgraded.

[Means for Solving the Problems]

According to the present invention, a belt for carrying a printed book, a gate arranged at a position where the printed book carried by the belt abuts, a chopper for folding a stopped book abutting at the gate and abutting the gate. A printing press holding device provided to press the upper surface of the printing press, and an auxiliary pressing device arranged on the upstream side of the printing press holding device, wherein the printing press holding device abuts against the gate. The upper surface of the book is provided with at least two presser plates arranged so as to hold at least two positions apart from each other in the direction of transfer of the presses, and each presser plate roller is rotatable and the roller is placed on the upper surface of the booklet. A leaf spring which is held so as to be pressed, and the auxiliary holding device is provided with a holding frame provided above the printing book conveyed by the belt, and vertically movable and rotatable on the holding frame. A copybook that passes underneath Has retained pressure ball to ride, and gist of chopper folding machine, characterized in that at least one of the pressure ball is disposed at a position to ride on the upper surface of the book blocks which abuts to the gate.

[Action]

In the chopper folding machine having the above-mentioned structure, the printing plate sent toward the gate first passes under the auxiliary pressing device, and at that time, the pressure ball of the auxiliary pressing device presses the printing plate.
Stabilize the travel of the book and apply a slight brake to the book to reduce the impact when it collides with the gate. Next, the printing plate passes under the printing plate pressing device and collides with the gate to stop. At this time, the printing plate pressing device of the printing plate pressing device presses at least two positions in the conveying direction of the printing plate and assists. The pressing device also presses the book, which prevents the wavelike deformation of the book. Thus, the printed book collides with the gate without fluttering and stops at a predetermined position, so that it is possible to prevent lowering of folding accuracy, occurrence of clogging, and increase of folding speed.

Here, the presser foot presser has a structure in which the presser foot is held by a rotatable roller, so that the roller comes into rolling contact with the presser (or the belt when there is no presser), and the roller or belt is worn or damaged. There is almost no gap and the roller is pressed by the leaf spring, so that the printed book can be effectively held down.

〔Example〕

Hereinafter, the present invention will be described in more detail with reference to the drawings. FIG. 1 is a schematic perspective view showing a main part of a reference example for explaining the present invention, and FIG. 2 is a side view of a part thereof. In the figure, the same parts as those of the conventional apparatus shown in FIGS. 4 to 6 are designated by the same reference numerals. That is, 1 is a book, 2 is a belt for carrying the book 1, 3 is a board for supporting the belt 2, and 4 is a belt 2.
Is a gate for stopping the printed book 1 conveyed by 5, a chopper 5 for chopper-folding the printed book 1 stopped by the gate 4, and 7 is a chopper arm that supports the chopper 5 and swings around a support shaft 6. .

Reference numeral 12 is a presser foot holding device arranged on both sides of the chopper 5. The presser foot pressing device 12 includes a support plate 13 and the support plate 13
It has presser foot retainers 14 and 15 which are attached to the upper part of the presser foot and which are composed of at least two leaf springs, and a press adjusting screw 16 which adjusts the pressing force of one of the presser foot retainers 14. As is clear from the drawing, the presser pressers 14 and 15 are arranged so as to be able to hold two positions apart from each other in the transport direction of the presser 1. Of the presser foot retainers 12, 12 on both sides of the chopper 5, the adjusting screw 16 of the presser foot retainer 12 on the side located below the chopper arm 7
The operating knob 17 is connected to the motor via a worm and a gear mechanism, and the adjusting screw 16 can be adjusted from a safe place regardless of the movement of the chopper arm 7.

Reference numeral 18 denotes an auxiliary pressing device arranged on the upstream side of the printing plate pressing device 12. This auxiliary pressing device 18 has a holding frame 19 and a pressure ball 20 rotatably held in the holding frame 19 so as to be vertically movable and rotatable. Pressing 1 stabilizes the travel of the book and also exerts a brake on the book. The auxiliary pressing device 18 is arranged at a position where at least a part of the pressure balls 20 can ride on the printing book 1 stopped by the gate 4.

According to the apparatus having the above structure, when the printing plate 1 is conveyed by the belt 2, first, it is pressed by the pressure ball 20 of the auxiliary pressing device 18 and is slightly braked, and then the printing plate pressing device 12 is moved under the pressing device 12. Pass through and collide with gate 4 and stop. At this time, the upper surface of the brush 1 is pressed by the pressure ball 20, the presser foot 14, 15, etc. of the auxiliary presser device 18, and therefore, when the brush 1 collides with the gate 4, it is deformed into a wavy shape. The tendency to flap is suppressed. As a result, it is possible to prevent a decrease in folding accuracy, a clogging, and the like, and improve the folding speed.

By the way, when a leaf spring is used as the presser foot as shown in FIG. 2, friction between the leaf spring and the book, friction between the leaf spring and the belt 2, etc. causes the leaf spring and the belt 3 to move. Wear or damage may occur, or the running of the belt, running of the printed book, etc. may become unstable. The present invention can solve this drawback.

FIG. 3 is a sectional view of the same portion as FIG. 2 showing an embodiment of the present invention. In the embodiment of the present invention, the support plates 13 of the presser foot pressing device 12 are replaced by the presser foot pressers 14 and 15 composed of the leaf springs shown in FIG. The presser foot retainers 22 and 23, which are composed of the rollers 22B and 23B, are provided. The other structure is the same as that of the reference example shown in FIGS.
Also in the embodiment shown in FIG. 3, the presser foot retainers 22 and 23 are the first
Similar to the presser foots 14 and 15 in the reference examples of FIGS. 2 and 2, two points on the upper surface of the presser 1 are pressed, so that the fluttering of the presser 1 can be suppressed and the folding speed can be improved. It is possible. Furthermore, in the embodiment of the present invention shown in FIG.
Since the presser plates 22 and 23 press the top of the presser plate with rotatable rollers 22B and 23B, the rollers 22B and 23B make rolling contact with the presser plate, and when there is no presser plate, they roll on the belt 2. As a result, there is little friction between the roller and the book, friction between the roller and the belt, and there is no wear or damage to the roller or the belt, and the running of the belt or the book is stable. In addition,
Since the leaf springs 22B and 23B are held by the leaf springs 22A and 23A, the rollers 22B and 23B can be effectively pressed against the brush by the spring force of the leaf springs.

In the above embodiment, the adjusting screw 16 is provided only for one of the presser foot 22 so that the pressing force can be adjusted. However, the adjusting screw may be provided for the other presser foot. Needless to say.

[Effect of device]

As described above, according to the present invention, the printing plate sent for chopper folding is first stabilized by pressing the pressure ball of the auxiliary pressing device to stabilize the printing plate and then applying a slight brake to the printing plate pressing device. Then, since at least two points in the transport direction of the copy book are held down and collided with the gate to stop in that state, the copy book that stops when it collides with the gate is less likely to be deformed in a wave shape and has good fluttering. Therefore, there is an effect that it is possible to prevent the deterioration of folding accuracy, the occurrence of clogging, etc., and increase the folding speed.

Further, in the present invention, since the brush is held by the rotatable roller of the presser foot, the roller comes into rolling contact with the brush or, if there is no copy, the belt below the roller, and the roller or belt Almost no wear or damage, and
Since the roller is configured to be pressed against the copy book by the leaf spring, the copy book can be effectively pressed down.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a main part of a reference example for explaining the present invention, FIG. 2 is a side view of a part thereof, and FIG. 3 is the same as FIG. 2 showing an embodiment of the present invention. 4 is a schematic perspective view showing a conventional device, FIG. 5 is a side view of a part thereof, and FIG. 6 is a front sectional view thereof. 1 …… Printer, 2 …… Belt, 3 …… Board 4 …… Gate, 5 …… Chopper 7 …… Chopper arm, 8 …… Printer presser device 12 …… Printer presser device, 13 …… Support plate 14,15 …… Printer presser, 16 …… Adjusting screw 18 …… Auxiliary presser device, 19 …… Holding frame 20 …… Pressure ball, 22,23 …… Printer presser 22A, 23A …… Leaf spring, 22B, 23B ...

Claims (1)

[Scope of utility model registration request] 1. A belt for conveying a book, a gate arranged at a position where the book conveyed by the belt abuts, a chopper for folding a book stopped at the gate and stopping, and a gate for the gate. A presser foot holding device provided to press the upper surface of the presser presser and an auxiliary pressering device arranged upstream of the presser foot presser device. The presser foot presser device hits the gate. The upper surface of the printing plate is provided with at least two printing plate pressers arranged so as to hold at least two positions apart from each other in the printing plate conveyance direction, and each printing plate presser is rotatable and the roller is the upper surface of the printing plate. A leaf spring which is held so as to be pressed against the holding frame, and the auxiliary holding device is provided with a holding frame provided above the printing book conveyed by the belt, and vertically movable and rotatable on the holding frame. And pass underneath Has retained pressure ball to ride in the chopper folding device, characterized in that at least one of the pressure ball is disposed at a position to ride on the upper surface of the book blocks which abuts to the gate.