JPH056301Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a device for flattening the folds of printed materials such as newspapers folded into quarters, which are carried out from a rotary press in a manner that they are stacked on top of each other at a substantially constant pitch.

Printed materials such as newspapers that come out of rotary presses are
For example, in the morning edition, one copy consists of 24 pages, or 6 sheets stacked on top of each other, folded in the center, and then folded into quarters, and in the evening edition, this is 16 or 14 pages.
In rare cases, it is two pages long, and its thickness varies. The newspaper that comes out of the rotary press is folded as described above, but the folds are relatively soft and the paper is in a fluffy state. The folded newspapers are stacked at a substantially constant pitch, are sent out in rows, pass through a vertical or horizontal carrier, flow into a counter stacker, and are assembled into bundles stacked in a fixed number of copies.
It is packaged and sent out.

As shown in FIG. 1, the carrier is provided with a stretchable wire cord that is successively passed around a cylindrical roller, and facing each other.
Alternatively, the cylindrical rollers are arranged alternately without contacting each other, and both sides of the newspaper are sandwiched between the corresponding rollers or wire cords. It is designed to be transported. For this reason, the newspaper with its plump folds is conveyed as is. When folded printed materials (newspapers) A with such plump folds are stacked on a counter stacker, the folded portion B becomes thicker.
As shown in FIG. 6A, the small bundles B, B, etc. are shifted, and the ends are likely to be damaged, and the appearance is also unsightly. Therefore, in the past, a pair of opposing rollers were installed at a predetermined interval in the middle of the carrier to serve as a crease crushing device, and the signature printed matter (newspaper) A was sandwiched between these rollers to strongly crease the folds. Even if they are stacked as shown in Figure 6 (b), the small bundles B, B, etc. of the printed matter (newspaper) A can be stacked with little misalignment and can be made to look beautiful. However, as mentioned above, the thickness of newspapers varies, whereas the spacing between the rollers is set constant to accommodate the average thickness.
For this reason, for example, if a newspaper that is thicker than planned is forced through the paper, the overlapping paper surfaces will be pressed together, causing the printing ink to bleed to the back, and the rollers to stain the printing surface. This often resulted in damage to the paper and reduced product value. In particular, in color printing, color stains become severe and may even result in loss of commercial value. On the other hand, if the distance between the rollers is too wide than planned, the creases will not be sufficiently flattened, resulting in problems such as misalignment of the overlap and failure to maintain beauty when stacked into a bundle. In such a case, the distance between the rollers must be reset by taking into consideration the thickness of the printed matter (newspaper) A and the state of ink fixation. The stopper for adjusting is attached directly to the bracket E fixed to the frame D of the C carrier by a stopper bolt F and a lock nut G, and the cushion part H at the tip of the lock nut G
is in contact with the upper surface of lever J due to the tension of spring I. To reset the roller spacing, loosen lock nut G and press roller 1.
It required a lot of effort and time to tighten the lock nut G again while raising and lowering the two stopper bolts F for each book to maintain balance. Therefore, the reality is that resetting the roll spacing on site each time the number of pages changes is cumbersome from the standpoint of work efficiency, and is not done. Furthermore, once transport of the printed matter (newspaper) A has started, it is dangerous to perform adjustment operations while transporting it, and in the case of newspapers, a rotary press or newspaper is required for each adjustment operation. It was impossible to stop the flow of conveyance due to the relationship with other devices connected upstream and downstream.

The present invention was developed in view of the above-mentioned circumstances, and its purpose is to easily adjust the roller spacing of the crushing device remotely, such as at hand, by operating an air cylinder with an intermediate position fixing device. The purpose of this invention is to make it possible to flatten the folds of a printed signature while adjusting the pressure to an optimum pressure that suits the thickness of the printed signature even during transportation.

Hereinafter, the present invention will be explained in detail based on the illustrated embodiments. FIG. 1 is an explanatory side view showing the structure of a continuous conveyance path for a signature printed matter A equipped with a fold crushing device according to the present invention. In the figure, 1 indicates a plurality of conveyance rollers 2 arranged along the conveyance path, 2, 2,
. . . and a plurality of wire cords 3, 3, 3, .
It is a carrier consisting of... Reference numeral 4 denotes a crease crushing device provided in the middle of the conveyance path, which consists of a pair of crushing rollers that tend to press against each other. Although the fold crushing device 4 of the illustrated embodiment is of a two-unit type in which the temporary crushing mechanism 5 and the final crushing mechanism 6 are arranged in series, it is needless to say that the invention is not limited to this. Alternatively, the crushing mechanism may be of one type. When the continuous conveyance path for the printed matter (newspaper) A in the illustrated embodiment is operated, the printed matter (newspaper) A is continuously conveyed in a staggered manner from the carrier supply port Y at the bottom in the figure. is sandwiched between conveyor rollers 2, 2, 2... and wire cords 3, 3, 3... and lifted by carrier 1, and when passing through crease crushing device 4, it is strongly creased and the upper side is transported to a counter stacker (not shown) provided in front of the carrier 1. Figures 2 and 3
Fig. 4 shows a fold crushing device 4 according to the present invention, and its structure includes a pair of crushing rollers 7, 7' arranged to face each other, and a pair of crushing rollers 7, 7'. Swinging arms 8, 8' that are rotatable, springs 9, 9' that maintain a constant pressure contact tendency, and stoppers 10, 10' that regulate the distance between the pair of crushing rollers;
It consists of an air cylinder 11 for adjusting the displacement of the stoppers 10, 10'.
One of the crushing rollers 7, 7' is a fixed roller 7a, 7a', and the other is a fulcrum 13,
a pair of swinging arms 8 that swing around 13';
8', the axis α of the fixed rollers 7a, 7a' is
The pressing rollers 7b, 7b' are movable in the direction in which the shaft axes β, β' opposite to the axes α, α' of the fixed rollers 7a, 7a' are moved toward and away from α', and the pressing rollers 7b, 7b' The springs 9, 9' provide a pressing force that increases as the distance between them increases, and the pressing rollers 7b, 7b' are applied to at least the fixed rollers 7a, 7.
Stoppers 10 and 10' are provided to limit the distance so as not to contact the outer periphery of a'. That is, the fixed rollers 7a, 7a' in the illustrated embodiment are rotatably attached to the shaft cores fixed to the left and right frames 12, while the pressure rollers 7b, 7
b' is pivotally attached to the tips 14, 14' of a pair of swinging arms 8, 8' fixed to the frame 12 so as to be rotatable about pivots 13, 13' provided in the middle part. By the rotation of the swinging arms 8, 8', the pressure rollers 7b, 7b, which are opposed to the fixed rollers 7a, 7a', are
The axes β and β' of 7b' are arranged so as to be movable in the directions of distance and nearness. Moreover, spring posts 15, 1 are provided at the base ends of the swing arms 8, 8'.
5' are provided, and springs 9, 9' are stretched between the spring posts 17, 17' attached to the brackets 16, 16'. The springs 9, 9' keep the pressure rollers 7b, 7b' in constant pressure contact with the fixed rollers 7a, 7a' due to their tension, and also
b, 7b' exert a pressing force that increases as the distance from fixed rollers 7a, 7a' increases. Further, stoppers 10, 10' are brought into contact with the base ends of the swinging arms 8, 8', and the swinging arms 8,
8' is stopped, and the pressure rollers 7b, 7 are rotated.
The distance between b' and b' is limited so that it does not come into contact with at least the outer periphery of fixed rollers 7a and 7a'. The present invention is further equipped with the following adjustment mechanism in order to adjust the distance and pressing force between the pressing rollers 7b and 7b' constructed as described above. The adjustment mechanism is configured such that the stopper holding member 18 is movable and can be moved to any position by means of a piston rod grip type air cylinder 11 that can be fixed at an intermediate position. By operating the cylinder 11, the positions of the stoppers 10, 10' can be set as desired, and the distance and pressing force between the pair of crushing rollers 7, 7' can be adjusted as desired. To explain the adjustment mechanism in the embodiment, as shown in FIGS. 3 and 4, the stopper 10,
10' is a guide body 19 attached to the frame 12;
The stopper holding member 18 is attached to a stopper holding member 18 which is displaceably mounted via a lever 19', and an air cylinder 11 of a rod grip type capable of being fixed at an intermediate position is connected to this stopper holding member 18 via a movable lever 20. Further, brackets 16, 16' fixed to the frame 12 and the swing arms 8,
a spring 9 installed between the proximal end of the spring 8';
The stopper 10, 10' and the swing arms 8, 8' are configured to come into contact with each other due to the tension of the stopper 9'. Therefore, when the piston rod 21 of the air cylinder 11 moves from side to side, the stopper holding member 18 moves via the movable lever 20, and the stoppers 10,1
0' is displaced and the rotation limit position of the swinging arms 8, 8' that are in contact with it is restricted, and the pressure rollers 7b, 7b' and the fixed rollers 7a, 7
This is to adjust the distance from a' and the pressure contact force.

A piston rod grip-type air cylinder that can be fixed at an intermediate position is a piston rod that can move freely back and forth, and the piston rod can be gripped at a predetermined position using a gripping tool such as a brake metal, allowing the piston to move freely. This piston is characterized by being able to be stopped and fixed at an intermediate position. In addition, although the illustrated embodiment has a configuration in which two sets of such adjustment mechanisms are formed in succession to perform the temporary crushing work, the final crushing work, and the double crushing work, the adjustment mechanism is not limited to this. Of course, it is also possible to have only one set.
In the figure, 22, 22' are stopper bolts, 23,
23' is a lock nut, and 24 is a movable shaft.

As mentioned above, the present invention uses a pair of crushing rollers 7, 7' which have a tendency to press against each other in the middle of the path for continuously conveying the printed documents A while shifting them one on top of the other.
, one of the crushing rollers 7, 7' is fixed roller 7a, 7a', and the other is a fulcrum 1 in the middle part.
A pair of swinging arms 8, 8' that swing around 3, 13' rotate the axes α, α, of the fixed rollers 7a, 7a' with reference to the axes α, α' of the fixed rollers 7a, 7a'. Pressing rollers 7b, 7b' whose axes β, β' facing α' are movable in the direction of receding and receding are attached to the pressing rollers 7b, 7b' by springs 9, 9' as the distance between them increases. The pressing rollers 7b, 7b' are provided with a pressing force that increases in force, and the pressing rollers 7b, 7b' are at least connected to the fixed rollers 7a, 7.
A stopper 10, 10' is provided to restrict the interval so that it does not come into contact with the outer periphery of a', and this stopper holding member 18
The stopper 1 is configured to be movable and connected to a rod grip type air cylinder 11 that can be fixed at an intermediate position so that it can be moved to any position.
Since the positions of 0 and 10' can be arbitrarily set to be displaced according to the situation of the printed document A, and the distance between the pair of crushing rollers and the pressing force can be adjusted, the following effects can be achieved. be. First, according to the present invention, the crushing roller 7 can be easily and remotely controlled by operating the air cylinder 11.
7' interval and pressure contact force can be adjusted, so the crease work on the signature printed matter A can always be performed in the optimal condition.
It is possible to make a stacked bundle of printed documents A with less misalignment and a beautiful appearance as shown in FIG. 6B. Second, since adjustments can be made without stopping the conveyance of the signature printed material A, the efficiency of conveyance and crushing work has become very high. Thirdly, the air cylinder 11 has a strong force, and because of the action of the movable lever 20, a small air cylinder 11 is sufficient, so it does not take up much space and is inexpensive. Fourthly,
Since the air cylinder 11 is used as the driving source, there is no need to worry about fire and it is safe.

[Brief explanation of the drawing]

Fig. 1 is an explanatory side view showing the structure of a continuous conveyance path for a signature printed material equipped with a crease eliminating device according to the present invention, and Fig. 2 shows an embodiment of the crease eliminating device for a signature printed matter according to the present invention. 3 is a side view of the device for crushing creases in the same printed matter, FIG. 4 is a rear view showing the adjustment mechanism of this invention, FIG. 5 is a side view showing the conventional stopper, and FIG. 6 A and B are perspective views showing a stacked state of printed materials. 1...Carrier, 4...Fold crushing device, 5
...temporary crushing device, 6...real crushing device, 7,
7'... Crushing roller, 7a, 7a'... Fixed roller, 7b, 7b'... Pressing roller, 8, 8'... Swinging arm, 9, 9'... Spring, 10, 1
0'...stopper, 11...air cylinder,
18...Stopper holding member.

Claims (1)

[Scope of Claim for Utility Model Registration] A pair of crushing rollers 7, 7' having a tendency to press against each other is provided in the middle of a path for continuously conveying the printed documents A while shifting them, and the crushing rollers 7,
7' is fixed roller 7a, 7a', and the other is fixed roller 7 by a pair of swinging arms 8, 8' which swing around fulcrums 13, 13' in the middle part.
Pressing rollers 7b, 7 whose axes β, β', which are opposite to the axes α, α' of the fixed rollers 7a, 7a', are movable in the direction toward or away from the axes α, α' of the fixed rollers 7a, 7a'.
b', and the pressure rollers 7b, 7b' are provided with springs 9,
9' provides a pressing force that increases as the distance from the fixed rollers 7a, 7a' increases, and the pressing rollers 7b, 7
Stoppers 10 and 1 for regulating the distance between b' and the outer periphery of at least the fixed rollers 7a and 7a'.
0', the stoppers 10, 10' are held by a movable stopper holding member 18, and the stopper holding member 18 is connected to an air cylinder 11 of a piston rod grip type that can be fixed at an intermediate position. By operating the air cylinder 11, the positions of the stoppers 10, 10' are set to be arbitrarily displaced depending on the situation of the printed matter A, and the crushing rollers 7,
7. A crease crushing device for printed materials, characterized in that the interval 7' and the pressure force can be adjusted.