JPS6099655A - Paper feeding apparatus for rotary offset press - Google Patents

Abstract

PURPOSE:To facilitate the delivery of paper employing a paper delivery bar having the tip of paper tied thereto by holding the paper delivery bar removably on paper feeding members provided at each of divided blocks of a rotary press. CONSTITUTION:A rotary press is divided into blocks 9, 10 and 11, which are provided with endless paper delivery members 12, 13 and 14 respectively. Between separate sets of paper delivery members (chains) 12, 13 and 14, one paper delivery bar 16 is passed over with bar holders 15 and 15. The paper delivery bar 16 has the tip of a paper 17 and is delivered between the paper feeding members of the blocks.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for threading paper through a rotary offset press.

Offset rotary presses generally have a paper feed section, an infeed section,
It consists of a printing section, a drying section, a cooling section, and a folding section, and among these, the paper feeding section, infeed section, cooling section, and folding section are sometimes equipped with an automatic paper threading device. This automatic paper threading device consists of a pair of endless paper threading chains running along both sides of a paper path, and a paper threading bar with a rack extending between the pair of paper threading chains. By fixing the tip of the chain to a paper threading bar and running the paper threading chain, the paper is automatically passed through a predetermined path.

Although this automatic paper threading device works well,
As mentioned above, it is not provided in the printing department or drying department.
Therefore, there was a drawback that threading in this part had to rely on manual operation.In order to overcome this drawback, it is possible to install a pair of paper threading chains that run through the entire offset rotary press. With such a paper threading device that passes through the entire rotary press, a new drawback arises: the paper cannot be threaded from the middle of the rotary press.In addition, conventional automatic paper threading devices are installed in each part of the rotary press (= However, in conventional automatic paper threading devices, the paper threading bar is fixed to the paper threading chain, so it is necessary to change the paper to the paper threading bar between each section. It's extremely troublesome, so there's not much benefit to it.

The present invention aims to rectify the drawbacks of the prior art, and allows paper threading to be carried out throughout the rotary press with a simple operation.
And paper 3 from the middle! It is an object of the present invention to provide a paper threading device that can perform If L E.

According to the present invention, which has been made to achieve the above object, an offset rotary press is divided into a plurality of blocks, and each block has a
An offset wheel characterized in that a pair of endless paper threading members are provided on both sides of a paper path and walk along the paper path, and a rack is provided between the pair of paper threading members in a removable manner. A turning point threading device is provided.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail below using embodiments shown in the accompanying drawings.

1 and 2 are side views schematically showing an offset rotary press, which includes a paper feed section 2 including a paper feed roll 1, an infeed section 3, a printing section 4, a drying section 5, It consists of a cooling section 6 and a folding section 7, and the paper 8 pulled out from the paper feed roll 1 passes through a path indicated by actual mA in Fig. 1 and reaches the folding section 7.
drive towards. As shown in FIG. 2, this rotary press is divided into three blocks 9, 10, 11, each of which is provided with an endless paper threading member 12, 13, 14. These paper threading members can be formed of flexible materials such as chains, belts, wires, etc., but in this embodiment a chain is used, and hence will be referred to as a paper threading chain hereinafter.

The paper threading chains 12, 13, and 14 are arranged so that a portion of each of them hooks into the paper path as indicated by the solid line A in FIG. A pair of them are provided. The pair of paper threading chains are driven at the same speed, and each paper threading chain 12.13
．． 14 are each connected to separate motors (not shown) to be independently driven.

A paper threading bar 16 is passed between each pair of paper threading chains (the chains 12 will be explained below) by means of a par holder 15.15.

The paper threading bar 16 is for fixing the leading end of the paper 17 to be threaded. The bar holder 15 is the paper threading bar 1
An example of this is shown in Figure 4~
It is shown in FIG.

In FIGS. 4 to 7, the bar holder 15 is connected to the chain 1.
2, a pair of L-shaped bars 20 pivotally attached to the front end of the base 19, a pair of L-shaped bars 20 that are held through the tip of the lever 20, and It has a pin 22 inserted into the hole 21 of 19A and a coil spring 23 that pushes the pin 22 toward the rear wall 19A.

By placing the lever 20 in the closed position and inserting the pin 22 into the hole 21 as shown in the figure, the bar holder 15 is attached to the paper threading bar 16.
Grasp the end of the pin 22 from the hole 21,
The paper threading bar 16 can be removed by opening the lever 20 outward. It should be noted that the pin 22 is not limited to a straight rod shape, but can also have a shaft 24 as shown in the pin 22A shown in FIG.
It may be bent from a certain point. This pin 2
2A, after pulling out the pin 22A from the hole 21, by bending it from the shaft 24, the pin 22A can be removed from the hole 21.
This is preferable because A can be held in that position.

Further, as a mechanism for holding the lever 20 in the illustrated closed position, a stopper 25 is provided at the tip as shown in FIGS. 9 and 10.
The coil spring 23 is connected to the pin 22B using the pin 22B having the
It is also possible to arrange it on the outside of the rack 20 so as to push the rear wall 19A of the base 19 in the direction in which it comes out. in this case,
As shown in FIG. 10, the hole 21A of the rear wall 19A is provided with a groove 21B through which the strut hole 25 passes, and the pin 22I
By passing the stopper 25 of No. 3 through the groove 21B, the pin 2
2B can be inserted into or removed from the hole 21A.

Next, the paper threading operation by the above device will be explained.

1 and 2, the leading edge of the paper pulled out from the paper feed roll 1 is connected to the paper threading bar 16 attached to the paper threading chain 12 of the first block 9, and the paper threading chain 12
to drive. This chain 12 allows the paper threading bar 16 to
moves along the paper path A in the block 9 and passes the paper through the block 9. When the paper threading in the block 9 is completed, the chain 12 is stopped and the paper threading bar 16 is moved from the bar holder 15 to the paper threading bar 16.
is manually removed and held by the bar holder 15 of the paper threading chain 13 of the adjacent block 10. Next, the paper threading chain 13 is driven to thread the paper into the block 10.

After that, stop the threading chain 13, manually pass the carpet > l - Q l, one bar to the paper threading chain 14 of the last block 11, and
Pass the set into block 11 by. After that, remove the leading edge of the paper from the paper passing bar 18 and pass the paper through the folding section 7.
n L, the work is completed. In this way, in the above device,
Paper can be easily threaded by passing one paper threading bar connected to the leading end of the paper to each paper threading chain 12, 13, 14.

In the above embodiment, the rotary press is divided into three blocks 9 and 10.
．． Although the block is divided into 11 blocks, the present invention is not limited to this, and the number of blocks may be increased or decreased, or the method of division may be changed. Further, the bar holder 5 attached to the paper threading chain is not limited to that of the above embodiment, and can be changed, and a bar holder of a different shape may be used for each block.

For example, the distance between a pair of paper threading chains provided in each block may differ between blocks, and in that case, the bar holder 5 shown in Fig. 4 cannot be used for paper threading chains with narrow intervals (paper threading). The end surface of the bar 16 is the base 19
(because it collides with the rear wall 19A). In that case, the 11th
A bar holder (details will be described later) as shown in FIGS. 1 and 12 may be used.

In the above embodiment, the paper threading chain is manually transferred between the paper threading chains. It is also possible to automatically create +. FIGS. 11 and 12 show an example of a bar holder used for automatic operation. The bar holder 30 in this example includes a base 31 fixed to the paper threading chain 12, and a pair of L-shaped bars 32 pivotally attached to the bars 7, 31.
, a mainspring spring 33 that pushes the lever 32 in the closing direction, a camflow 34 connected to the lever 32, a gear (not shown) that connects the pair of levers 32 to rotate in opposite directions, and rotation of the lever 32. Stopper 35 regulating the range
．． 36 mag. Normally, the lever 32 is in the closed position shown by the spring 33 and holds the paper threading bar 16, but when the cam 37 pushes the cam roller 34, the lever 32 opens; the threading bar 16 can be removed. . Note that springs of other shapes may be used instead of the mainspring spring 330.

Next, automatic transfer of the paper threading bar 16 from the paper threading chain 12 to the paper threading chain 13 will be explained using FIGS. 13 and 14. The vertical running part of the chain 12.13 is the first
As shown in FIG. 3, they are arranged very close together, between which the bar receivers 38, 39 are arranged, and the chain 12.
A solenoid-operated cam 37 is also arranged adjacent to each of the cams 13 . Chain 12.13, bar holder 38.39
are laterally offset as shown in FIG. 4 to prevent the levers 32 of each chain from hitting each other. Further, the upper bar receiver 38 is fixedly provided, but the lower bar receiver 39 is movable downward from the illustrated position.

First, the paper threading bar with paper attached to it held by the paper threading chain 12 will be explained.The 0-chain 12 carries the paper threading bar with paper attached and stops at the bar holder 38. Next, the solenoid of cam 3T operates to move cam 37 to the first position.
3, push the bar upward, open the lever 32, and place the bar in the bar holder 38. The chain 12 then runs again. At this time, the lever 32 is in an open state as its cam roller 34 engages with the cam surface 37A of the cam 3γ, and in this state it passes the bar receiver 3B. Later the cam 37 solenoid returns to its original position. On the other hand, the chain 13 runs and stops when the lever 32 comes in front of the bar receiver 38.

Next, the cam 37 near the chain 13 is moved by the solenoid to open the lever 32. Thereafter, the chain 13 moves and the lever 32 moves to the bar receiver 38. The cam 37 solenoid then returns to its original position, closing the lever 32 and holding the threading bar. Thus, the operation of transferring the paper threading bar from chain 12 to chain 13 is completed.

Next, the operation of passing the empty paper threading bar held by the chain 13 to the chain 12 will be explained. The chain 13 carries the empty bar and stops at the bar receiver 39. At this time, the bar holder 39 should be placed so that it does not interfere with the running of the bar.
It has retreated downward from the position shown. Next, the bar receiver 39 rises to the illustrated position and holds the bar. The lever 32 of the chain 13 is opened by a cam (not shown), and the bar is released, causing the chain 13 to move and leave the lever 32 from the bar. The chain 12 runs t/, and the chain 32 stops in front of the bar receiver 39. A cam (not shown) allows
The lever 32 is opened, then the chain 12 runs again and the lever 32 comes to the bar holder 39. here,
The cam moves back 2 to close the lever 32, holding the bar, and then the bar holder 39 moves back downwards, moving to the next position while holding the empty bar with the lever 32 on the chain 12.

This completes the empty bar transfer operation.

In the above embodiment, since the bar boulder 30 of the chain 12, 13 holds the side surface of the paper threading bar 16, there is a risk that the bar 16 may shift little by little with respect to the chain in the longitudinal direction of the bar. Therefore, in order to adjust the position of the end surface of the bar, it is preferable to provide a guide plate for guiding the end surface of the bar in a part of the running path of the chain. Further, it is preferable that the end face of the bar be provided with a wall for smooth contact with the guide plate.

As described above, in the present invention, the offset rotary press is divided into a plurality of blocks, each block is provided with a paper threading member, and the paper threading member is made to removably hold the paper threading bar. Paper threading can be carried out extremely easily by simply passing a paper threading bar with its tips tied together between the paper threading members of each block. Moreover, since the paper threading members of each block can be driven individually, it is possible to thread the paper from the middle of the rotary press.

[Brief explanation of the drawing]

1 and 2 are schematic side views of an offset rotary press incorporating a paper threading device according to the present invention; FIG. 1 shows a state in which paper is threaded, and FIG. 2 shows a state in which paper is not threaded. . Fig. 3 is a perspective view of a part of the paper threading device, Fig. 4 is an enlarged perspective view of the bar holder, Fig. 5 is a side view of the bar holder, Fig. 6 is a sectional view of the bar holder, and Fig. 7 is a front view of the bar holder. Figure 8 is a side view showing a modified example of the bottle used in the bar holder, Figure 9 is a sectional view of a modified example of the bar holder, corresponding to that shown in Figure 6, and Figure 10 is a side view of a modified example of the bottle used in the bar holder. BB arrow view, Figures 11 and 12 are side and front views of a bar boulder different from the above, Figure 13 is a side view schematically showing the delivery section of the paper threading bar, and Figure 14 is FIG. 14 is a schematic view of FIG. 13 viewed in the direction of arrow CC. 9.10.11...Block 12.13.14...Paper thread chain 15.30...
・Bar holder 16...Paper threading bar 17...Paper agent Patent attorney Kyo Matsu 3rd figure 4th picture Fang 5! III Figure 18 J

Claims (1)

[Claims] The offset rotary press is divided into a plurality of blocks, each block is provided with a pair of endless paper threading members that run along both sides of a paper passage, and a paper threading bar is provided between the pair of paper threading members. A paper threading device for an offset rotary press, characterized in that a rack is provided in a removable manner.