JPH0759453B2 - Paper threading device for rotary press - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a web threading device for a rotary press that prints by passing a web material through a paper threading path from a paper feed section to a folding section to a folding section. It is effective to apply to a rotary press that has a paper threading path that passes through a number of guide rollers including a double-ender device and a bay window device and a turning bar between the paper feeding section and the folding section. The present invention relates to a paper threading device configured to perform paper threading by a paper threading body that reciprocates according to a guide provided along a path.

[Conventional technology]

A conventional web threading device for a rotary press is, for example, the actual Kaihei 1-103647.
The technique disclosed in Japanese Patent Publication is known. This prior art is
A pipe-shaped guide rail that has a branch portion and has a notch in the longitudinal direction of the side is laid along a plurality of presumed paper threading paths, and is formed at appropriate intervals on this guide rail. A drive body is provided in the cutout portion, the drive body is driven by the drive body to travel in a zigzag manner in the guide rail, and a traveling body is provided whose entire length is slightly longer than the interval between the cutout portions, Further, the traveling body is provided with a clip that detachably holds a paper connection adapter connected to the leading end of the roll-shaped printing paper set in the paper supply unit.

[Problems to be Solved by the Invention]

 The above-mentioned conventional technique has the following problems.

The web threading in the rotary press is performed from the upstream side to the downstream side, that is, from the paper feed section to the folding section. At this time, the web material to be threaded is formed by a relatively short running body (hereinafter referred to as short-length running body). Be guided. At this time, since the driving bodies for driving the short-long running bodies are provided at intervals slightly shorter than the length of the short-long running bodies, they are driven by two sets of driving bodies and one set of driving bodies. In some cases, the driving force is not constant, and because the vehicle is decelerated when passing through a portion with high running resistance, such as due to the effects of corners and friction, the traveling speed of the short and long running body becomes uneven, As a result, there is unevenness in the web threading speed of the web stock connected to the short-length running body, slack in the web stock due to deceleration and wrinkles due to acceleration, etc. There was a great deal of trouble with the paper threading.

In the case of newspaper printing, for example, with the recent increase in the number of pages and the increase in color printing, a large number of guide rollers including a double-ender device and a bay window device and a turning bar are installed in the paper passage path from the paper feed unit to the folding unit. Since it is necessary to increase the number, the paper-passing path has become much longer and more complicated than before. As a result, the driving body that drives the short and long traveling body that moves in the guide rail is
As described above, due to the fact that they are installed at intervals slightly shorter than the length of the short-length traveling body, it is inevitable to provide a large number in proportion to the length of the paper passing path. As described above, providing a large number of driving bodies not only increases the product cost, but also complicates the inside of the narrow rotary press frame, and at the same time, makes it difficult to perform maintenance and inspection work other than normal printing work. There was also a safety issue.

Further, in such a conventional paper threading device, it has not been possible to confirm the paper threading path through which the paper is threaded before threading.

The present invention has been made in view of the above, and enables smooth and reliable threading of a web material at a substantially constant speed without applying an irregular tension to the web material. By checking the paper threading route before threading, it is possible to check whether it is correct or not. Furthermore, the structure of the device itself is simple, there are few failures, maintenance is easy, and work safety is improved. It is an object of the present invention to provide a paper threading device for a high rotary press.

[Means for Solving the Problems] In order to achieve the above object, a web threading device of a rotary press according to the present invention includes a paper threading body guide provided along substantially the entire length of a paper threading path of the rotary press, and a paper threading body guide. In the middle of the thread guide,
A branching portion provided to selectively connect the downstream side and a plurality of upstream sides, and an endless paper threading body that reciprocates according to the paper threading body guide and is continuous with a length slightly longer than the paper threading path. A paper locking member that is provided near one end of the paper threading member and locks the web material to be threaded, and a paper threading member downstream of the paper threading path and near the downstream end of the paper threading member guide. A paper threading body pool portion, which is provided with the other ends linked to each other and pools the paper threading body after completion of the paper threading, and at least one for running the paper threading body according to the paper threading body guide.
It is configured to have two driving parts.

[Action]

The paper threading body pooled in the paper threading body pool portion is reversely driven by the drive unit that operates in reverse direction from the downstream side of the paper threading path to the web side paper feed standby position on the upstream side according to the paper threading body guide. The web paper is guided along the paper thread guide by locking the web material to the paper locking member and then rotating the drive section in the forward direction to move the paper thread from the upstream side to the downstream side of the paper thread path. Is threaded.

Further, prior to the reverse running of the paper threading body, the upstream side and the downstream side of the paper threading body guide are selectively connected so as to be aligned with the paper threading path to be threaded by the branch portion.

〔Example〕

 An embodiment of the present invention will be described with reference to the drawings.

FIG. 4 schematically shows an example of a rotary press to which the present invention is applied. The rotary press has one to a plurality of paper feed sections S, printing sections P and folding sections F, and It is routed by a plurality of guide rollers GR, a turning bar TB, etc., and is sometimes branched in the middle to have a predetermined paper passage path extending over the paper feed section S, the printing section P and the folding section F. The web threading device according to the present invention, in such a rotary press, pulls out the web material W from the web material winding body WR attached to each paper feeding portion S, and passes the desired printed matter through the printing portion P to the folding portion F. It is a paper threading device useful for threading the web material W in accordance with a proper selection of a predetermined paper threading path, and its specific configuration is as shown in FIGS. 1 to 4. is there.

That is, a plurality of guide rollers GR and a turning bar
The paper feed section S is located on the side of the paper feed path routed by TB and along the inside of the frame (not shown) of the rotary press.
From the (upstream side) to the folded portion F (downstream side), a paper threading body guide 1 for guiding a continuous paper threading body 2 is provided fixed to the frame via an appropriate bracket (not shown). As shown in FIG. 3, the paper threading body guide 1 includes two guide members that are spaced apart in the vertical direction and face each other.
It is composed of 1a and 1b, and the gap to be separated is the paper threading body 2.
The thickness of the paper threading body 2 is slightly larger than the thickness of the paper threading member 2, and the paper threading body 2 is slidably loaded in the facing gap.

The paper threading body 2 is in the form of a strip that is deformable according to the bending of the paper threading body guide 1 and is continuous. At least one end of the paper threading body 2 is a guide that slides on both sides of the paper threading body guide 1. Pieces 3a ₁ , 3a ₂ , 3b ₁ , 3b ₂ are provided separately. Among the guide pieces, a pair of guide pieces 3a ₁ and 3a ₂ located on the downstream side in the paper threading direction is the inner guide piece.
One end of a paper locking member 5 is connected to 3a ₁ via a flexible ribbon 4. The other end of the paper engaging member 5 is connected to disengageably inside the guide piece 3b ₁ of the guide piece 3b _1, 3b ₂ of a pair located on the upstream side through the paper. The other end of the paper threading body 2 is locked to a paper threading body pool portion 6 provided at an appropriate position around the folded portion F.

A drive unit 7 is provided at an appropriate position of the paper threading body guide 1 to nip and roll the paper threading body 2 to move the paper threading body 2.

Further, a branch portion 8 is provided in the middle of the paper threading body guide 1, and by moving the branching portion 8 up and down by the cylinders 9a and 9b, the paper threading body guide 1 is connected to the upstream side and the downstream side of the branching portion 8. The concatenation of is selected.

The operation in the above configuration is as follows.

First, the drive unit 7 is reversely operated to move the paper threading body 2 loaded from the paper threading body pool section 6 into the paper threading body guide 1 to the paper feeding section S where the web material W to be threaded is on standby. The paper locking member 5 is moved toward the upstream side toward the standby position for the web material W, and is stopped.

Prior to running the paper threading body 2 in the upstream direction, the branching portion 8 selects and connects the upstream side and the downstream side of the paper threading body guide 1 so as to be aligned with the paper threading path to be threaded.

Further, after the paper threading body 2 is stopped, whether or not the paper threading body is threaded according to the paper threading body guide 1 along the paper threading path to be threaded, that is, the web material W is set to the desired paper threading path. Whether or not the paper threading is possible can be confirmed by visually checking the paper threading body 2 stopped in the paper threading body guide 1 or by an appropriate means.

Then, the locking end WE of the web material W is locked to the paper locking member 5. This locking work is performed manually or by a sticking device (not shown).
It can also be done automatically. Now, the preparation for threading is completed, and the threading starts from now on.

When the paper threading body 2 travels in the upstream direction, the other end of the paper threading member 5 is locked to the guide piece 3b ₁ so that the paper threading member 5 can move with respect to the running of the paper threading body 2. Keep it out of the way.

The paper threading operation from the state in which the paper threading preparation is completed is performed by operating the drive unit 7 in the normal direction and causing the paper threading body 2 to travel in the direction opposite to the time of the paper threading preparation operation, that is, in the downstream direction. As a result, the web material W locked by the paper locking member 5 of the paper threading body 2 travels along with the paper threading body 2 along the paper threading body guide 1, and passes through the guide roller GR, turning bar TB, and the like. Then, the paper is threaded by advancing to the folding portion F.

At this time, the other end of the paper locking member 5 is detached from the guide piece 3b ₁ and flexibly connected to the paper threading body 2 by the flexible ribbon 4.

The present invention is not limited to the configuration of the embodiment described above. First, a continuous paper threading body is fed from the downstream side to the upstream side of the paper threading, the web material is locked to this, and then the paper threading body is pulled back. The form does not matter as long as the paper is threaded.

For example, although the paper threading body 2 in the form of a strip was used in the above-described embodiment, this may be any elongated continuous body having flexibility such as a rope shape, a thread shape, a chain shape, and the shape has changed midway. It may be one. Paper thread pool 6
Also need not be roll-up as in this embodiment.

Further, the paper threading body guide 1 may be appropriately changed by aligning it with the paper threading body 2, and even if the paper threading body 2 is the embodiment described above, the cross-sectional shape of the paper threading body guide 1 is The shapes are not limited to those shown in FIG. 3, but are round, U-shaped, half-moon shaped,
It may be flat, T-shaped or the like. And then the paper thread 2
The driving may be performed by driving the pulley of the paper thread passing member pool portion 6. In this case, in order to make the paper threading body 2 travel at a constant speed, it is necessary to change the rotation speed according to the change in the winding diameter of the pulley.

In any case, the paper threading device according to the present invention includes design modifications that do not depart from the scope of the claims.

〔The invention's effect〕

According to the present invention, the paper threading body guide 1 is provided along substantially the entire length of the paper threading path of the rotary press, and the paper threading body 2 is caused to travel in accordance with the paper threading body guide 1. It is possible to thread a plurality of paper threading paths by the body. Further, since the paper threading body 2 is pulled by pulling the paper threading body 2 from the downstream side at a constant speed, the paper threading is smoothly and reliably carried out without applying an irregular tension to the web material. be able to.
Further, the paper threading body 2 is made continuous at least along the length of the paper threading path and has an end, and a paper locking member is provided in the vicinity of one end of the paper threading member 2 so that the other end is linked to the paper threading pool section. Each time the web is threaded, one end is first fed to the web material standby position on the upstream side of the web, so that the length of the web threading body 2 is slightly longer than the web threading path of the rotary press. That is, it is only necessary to be long enough to be linked to the paper threading body pool section, and in some cases, it is not necessary to significantly exceed the length of the paper threading path exceeding 100 m.
Furthermore, the number of drive units for running the paper threading body 2 is small, and a paper threading body pool section for pooling the paper threading body 2 after completion of the paper threading is provided only on one downstream side of the paper threading path. As a result, the structure of the device itself is simplified, the occurrence of failures is small, maintenance management is easy, and the safety in maintenance and inspection work is high. Further, according to the present invention, the paper threading body that has been fed back prior to the paper threading is checked visually or by an appropriate sensor so that the paper threading path matches the paper threading path. It is possible to check whether or not there is an error, and it is possible to prevent a mistake in the paper feeding path.

[Brief description of drawings]

FIG. 1 is a perspective view schematically showing the configuration of the present invention, FIG. 2 is a perspective view showing a paper threading body and a paper threading body pool portion, and FIG. 3 is an enlarged cross section taken along line III-III of FIG. FIG. 4 and FIG. 4 are front views schematically showing an example of a rotary press to which the present invention is applied. 1 is a paper thread guide, 2 is a paper thread, 4 is a flexible ribbon,
5 is a paper locking member, 6 is a paper threading body pool section, 7 is a drive section,
F is a folding section, P is a printing section, S is a paper feeding section, GR is a guide roller, TB is a turning bar, W is a web material, WE is a locking end, and WR is a web material web winding body.

Claims (1)

[Claims] 1. A paper threading body guide provided along substantially the entire length of a paper threading path of a rotary press, and an intermediate portion of the paper threading body guide, the downstream side of which is selectively connected to a plurality of upstream sides. A branching part provided for the paper threading guide, and an endless paper threading body that reciprocates according to the paper threading guide and is continuous for a length slightly longer than the paper threading path. A paper locking member that locks the web material to be threaded and a paper threading member that is provided downstream of the paper threading path and near the downstream end of the paper threading member guide so that the other end of the paper threading member is linked. A paper threading device for a rotary press having a paper threading body pool section for pooling the paper threading body after completion, and at least one drive section for causing the paper threading body to travel according to a paper threading body guide.