JPH0822706B2 - Automatic threading device for rotary press - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic paper threading device, and more particularly to a web press using a paper roll, for example, in a rotary press for printing, from a paper feed part through a print part to a paper path part or The present invention relates to a device for threading paper up to a folding portion.

[Conventional technology]

The web threading device of the rotary press is, for example, "newspaper printing / printed edition revised edition" (published by The Japan Newspaper Association on October 31, 1980).
The ones shown on pages 62 to 64 are known. That is, a paper passing belt equipped with a means for catching the leading end of the paper roll is installed side by side with or adjacent to the guide roller, and is fed again through the paper feed section, the printing section, the rail frame section that is the paper path section, and the folding section. It is stretched endlessly so as to return to the section, and a belt drive device is provided at an appropriate position. Further, the leading end on the paper threading belt side of the winding paper mounted on the mounting means of the paper feeding section is formed into a cutout shape, and the pointed end is folded in several layers and / or reinforced by an adhesive tape or the like. The paper was caught by a paper threading belt, the belt was driven, and the belt was towed to guide and guide it to a predetermined path.

[Problems to be Solved by the Invention]

In the above-mentioned conventional apparatus, although the web is rotatably mounted, the self-weight of the web is about 1 ton for A roll defined by JIS P-3001 (newspaper). Therefore, as in the conventional example, only pulling the one-side start end by the paper threading belt has a problem that the paper being pulled is often torn before the paper roll starts to rotate due to the pulling force.
In addition, if the paper roll can rotate and shift to traction guidance without tearing the paper stock, even if the paper threading belt is stopped for some reason, the paper roll will continue to rotate due to inertial force, and the paper roll There was a problem that it was often unwound and slackened on the floor. Then, in order to prevent these problems and carry out smooth paper threading, the worker had to manually rotate or brake the paper roll.

[Means for solving the problem]

The present invention relates to a rotary press including a paper feed unit provided with a winding paper stacking unit, a printing unit, a folding unit, and a paper path unit linking these units, from the paper feeding unit to the paper path unit or the folding unit. Up to the guide means for guiding the roll paper, the unwinding means for driving and rotating the roll paper mounted on the mounting means to roll out the roll paper, and the operation amount of the guide means and the roll-out amount of the roll paper by the roll-out means. There is provided an automatic paper threading device characterized by comprising a control means for controlling the guiding means and the unwinding means in association with each other so as to align the sheet.

[Action]

First, the leading end portion of the paper roll is captured by the guiding means to operate the rotary press and the automatic paper threading device is started. As a result, the guiding means and the unwinding means are controlled in association with each other, and are sequentially operated in association with the operation of the rotary press. The guiding means pulls and guides the winding paper starting end portion along the extending path, and the unwinding means drives and rotates the winding paper in a state of being mounted on the winding paper mounting means. Then, at the time when the leading end portion of the rolled paper reaches a predetermined position, the rotary press and the automatic paper threading device are stopped, and the paper threading is completed.

〔Example〕

The present invention will be described below with reference to FIGS. 1 to 4 showing an embodiment of the invention.

(1) is a paper threading belt. The paper passing belt (1) which is a guiding means includes a guide roller (11) arranged in parallel with a guide roller and / or a drag roller in the paper feeding section S, the printing section P, the paper path section RF, and the folding section F, (11) ……, or guide pulleys (12), (12)… that are installed on the same axis.
According to the following, the endless tension is provided so that the sheet reaches the folding section F from the sheet feeding section S and then returns to the sheet feeding section again. Further, the paper threading belt (1) changes the tensioning level phase (front side and back side in FIG. 1) at two positions on the way by a known means, and the paper threading belt (1) passes through the overlapping position (illustrated embodiment). Then print section P)
Are prevented from interfering with each other. Further, the paper threading belt (1) is driven by the belt driving unit (3) and operates endlessly along the guide pulleys (11), (11), ... And the guide pulleys (12), (12). . The paper threading belt (1) has a paper roll NP as shown in FIG.
Slits (1) S, (1) S ... For catching the starting end of the paper W unwound from the sheet W are provided at an appropriate pitch. The belt drive section (13) is operated by a motor (13) M that operates under the control of the control means (3).

(2) is an unwinding means. In this embodiment, the unwinding means (2) is provided at an appropriate position of the paper feeding section S, and the unwinding belt (21) comes into contact with the standby position (21) a to the outer circumference of the winding paper NP. ) Reciprocating paper to and from b
Is directly driven and rotated. However, as the unwinding means (2), a winding shaft NP is driven and rotated by driving a mounting shaft member (not shown) of the winding paper mounting means SA (not shown), or from a rotary press. It is an independent mechanism and may be of a type (not shown) that directly or indirectly drives and rotates the paper roll NP. In either type, it is operated by a motor (2) M that operates under the control of the control means (3). In addition, in the unwinding means (not shown) for driving and rotating the mounting shaft member (not shown) to unwind the roll paper, the length of the material paper unwound by one rotation of the mounting shaft member (not shown) Depends on the diameter of the web. Therefore, some means, for example, a means for detecting the diameter of the paper roll and converting the amount of rotation of the mounting shaft member (not shown) into the unwind amount of the paper stock is linked with the control means, and the operating amount of the paper threading belt and the paper stock are linked. It is necessary to properly match the unrolling amount of

(3) is a control means. The control means (3) is composed of a microcomputer, etc., and is connected to the motor (2) M, the motor (13) M, the rotary press drive motor MM, etc., and a rotary press operation panel (not shown) or / and an appropriate position of the rotary press. An operation signal of a switch (not shown) provided in the motor is appropriately mediated and an operation signal is transmitted to each of the motors (13) M and (2) M.

The operations of the paper threading belt (1), the unwinding means (2), the control means (3), etc., having the above-described configuration are as follows. The winding paper NP on the mounting means SA is formed in a cut-out shape with the side start end near the paper threading belt (1) as a pointed end, and the pointed end is folded several times and / or reinforced by an adhesive tape or the like. Next, insert this into the slit (1) S of the paper threading belt (1), and rotate the paper roll NP to unwind a certain amount (for example, 3 to 4 meters) of the raw paper W. Performed manually by a person (see Fig. 2).

When the pointed end of the paper W remains in the position shown in FIG. 2, when the unwinding belt (21) of the unwinding means (2) comes into contact with the outer circumference of the winding paper NP and / or the unwinding belt (21) unwinds. When carrying out, there is a disadvantage that the paper W interferes with the unwind belt (21) or is wrinkled by the operation of the unwind belt (21). In order to avoid this, the paper threading belt (1) is actuated to move the paper feed paper W tip, that is, the paper feed paper W tip capture portion (1) a of the paper threading belt (1). Further, when the mounting means SA is in the phase shown in FIG. 2, the unwinding belt (21) cannot come into contact with the outer circumference of the paper roll NP, so the mounting means SA
The SA is turned to change the phase and stopped at an appropriate position, for example, the position shown in FIG. These two operations are performed as follows. That is, a circuit (not shown) for the automatic paper threading preparation operation is made operable by a switch operation, and then the rotary press is started by a switch operation. This start signal is also sent to the control means (3) and the paper thread belt (1) is sent.
The motor (13) M of the belt driving unit (13) of the above is started, and the timer (not shown) set enough time for the tip catching unit (1) a of the paper threading belt (1) to move sufficiently. Start). Then, by receiving the time lapse signal of the timer (not shown), the rotary press is stopped and the motor (13) M of the belt drive unit (13) is stopped. Further, this time lapse signal is also sent to a turning drive unit (not shown) for turning the mounting means SA. Upon receiving the signal, the mounting means SA shifts to the phase shown in FIG. 1 and stops. This stop is a mounting means
This is performed by receiving a signal that the completion of displacement is detected by an appropriate detection means (not shown) provided on the swivel shaft portion SA (1) of the SA or at another position.
In addition, the circuit (not shown) for the automatic paper threading preparation operation is reset and released from the operable state by the signal transmitted from the control means (3) which receives the detection signal. By the above operation, the paper thread preparation work is performed.

Next, the automatic threading operation will be described. First, an automatic paper threading operation circuit (not shown) is made operable by a switch operation, and subsequently, a rotary press operation circuit (not shown) is reset by a switch operation. A circuit (not shown) for operating the rotary press is locked by this reset signal, and a lock signal is sent to the control means (3). The control means (3) which has received the lock signal transmits the lock signal to the unwind belt (21), and thereby the unwind belt (21).
Is controlled to be displaced from the standby position (21) a to the unwinding position (21) b. This displacement is caused by a frame (not shown) of the unwinding means (2) that supports the unwinding belt (21), for example, an air cylinder (not shown) whose tip is attached to the frame of the unwinding means (2). ) By extending and displacing the rod. Then, a timer that sets a time sufficient for the rod of the air cylinder (not shown) to fully extend in response to a signal detected by a detection means (not shown) that the rod extension of the air cylinder (not shown) has been detected. (Not shown) is started, and a transmission signal due to the passage of time of this timer (not shown) is transmitted to a circuit (not shown) for operating the rotary press to release the locked state.

It is the mounting means FA that controls the completion of rod extension of the air cylinder (not shown), that is, the contact of the unwinding belt (21) with the outer circumference of the web NP by a timer (not shown).
The diameter of the paper roll NP mounted on the paper is not constant, and it is constant how much the unwind belt (21) contacts the outer circumference of the paper roll NP when the rod of the air cylinder (not shown) extends. It depends on what you do not do. Therefore, an appropriate signal transmitting means (not shown) capable of detecting or predicting the contact of the unwinding belt (21) with the outer circumference of the paper roll NP irrespective of the difference in the diameter of the paper roll NP may be used.

The lock signal is also transmitted from the control means (3) to the operating portion (not shown) of the braking means B, and the operating portion of the braking means B (not shown) for braking the paper roll NP provided in the paper feeding portion S is shown. The brake means, for example, the brake belt BB, releases the braking action.
When the circuit (not shown) for operating the rotary press is released from the locked state, the circuit indicates that the circuit is released by an appropriate means, for example, a horn sounding and / or a lamp is lit. After confirming, press the switch to start the rotary press. This activation signal is also sent to the control means (3), and the motor (13) M of the belt driving part (13) of the paper threading belt (1) and the motor (2) M of the unwinding means (2).
And W to match the working length of the paper threading belt (1).
Are unwound and they are controlled and activated to operate at a speed that matches the operating speed of the rotary press. This operation is performed at least at the position (1) a where the leading end of the paper feed W of the paper threading belt (1) is captured at the folded portion F.
That is, the process is continued until the paper W reaches a position where the paper W has finished circulating around a guide roller (not shown) provided coaxially with the guide pulley shown by (12) a in FIG. Then, normally, the paper W is removed from the paper threading belt (1) by an operator who stands by in front of the former plate FB of the folding section F and guided in a proper state according to the former plate FB. It continues until it reaches a folding mechanism (not shown) downstream and is stopped.

To stop the operation, first, the rotary press is stopped by a stop signal by a switch operation by an operator, and the rotary press stop signal is sent to the control means (3), so that the belt drive unit (13) of the paper threading belt (1) is stopped. The motor (13) M and the motor (2) M of the unwinding means (2) are stopped. Subsequently, the unwinding belt (21) is moved to the unwinding position (21) by the signal transmitted from the control means which has received the stop signal of the motor (2) M.
The rod of the air cylinder (not shown) that displaces the frame (not shown) of the unwinding means (2) is retracted and displaced from b to the standby position (21) a. The automatic paper threading ends when the detection means (not shown) detects that the unwinding belt (21) has reached the standby position (21) a.

However, at the above-mentioned time point, for example, the paper passing belt (1) is provided bypassing the guide roller position like the guide rollers G (1), G (2), G (3), and G (4). In many cases, the surplus of the paper W remains slack at the position, so the paper tensioning operation for removing the surplus is continued.

The paper tensioning operation is performed by activating the rotary press with a paper tensioning signal by a switch operation of the operator, and sending the activation signal to the control means (3) to activate a timer (not shown). This timer is set to a time sufficient to remove the slack when the paper W is pulled and moved by a drag roller (not shown) of a rotary press. Then, the signal of the passage of this time is sent to the braking means operating part (not shown), and the brake belt is activated.
The BB is adjusted so that the outer circumference of the web NP is braked at a lower pressure than during normal operation. Further, the same progress signal is sent to the turning drive unit (not shown) for turning the mounting means SA to start it, and the mounting means SA is moved to the normal operating position of the web NP shown in FIG. It turns to the phase that becomes. Mounting means
A detection signal that SA has reached this phase detected by an appropriate detection means (not shown) is sent to the control means (3) to activate the timer. This timer is set to a time sufficient for the roll paper NP to be able to stably roll out the roll paper W under low pressure braking. A signal indicating the passage of this time is sent to the braking means actuating portion (not shown), and the brake belt BB is adjusted so that the outer circumference of the web NP is braked at a predetermined pressure during normal operation.

By the above operation, it is confirmed that the paper W is stably unwound under the normal operation of the brake means B, and the operator operates the switch to end the paper tension operation.

The rotary press continues to operate during the paper tensioning operation and continues to pull the material W, and is normally stopped by the switch operation for ending the paper tensioning operation, but the rotary press is stopped at the same time as the paper tensioning operation ends. When the operator determines that there is no need, the switch to be operated is selected to reset only the control means (3) of the automatic paper threading device.

If the paper W can be reliably and stably unwound under low-pressure braking immediately after the slack removal that is performed at the beginning of the paper tensioning operation, the paper NP is loaded to the phase where it is in the normal operating position. A timer (not shown) for moving the frame SA after turning may be omitted. Further, the unwinding means (2) according to the present invention may also serve as a pre-drive means, which has been conventionally equipped in a rotary press, for joining webs, and in this case, the control means (3) A speed control unit (not shown) is provided for matching the operating speed of the combined means with the operating speed of the paper tension belt (1).

In the embodiment described above, the operator sequentially switches the automatic threading preparation operation or paper tension operation,
It goes without saying that the control means (3) may be provided with a sequence control circuit so that these operations are automatically and successively performed.

The present invention is not limited to the embodiments described above, but includes design modifications that do not depart from the scope of the claims.

〔The invention's effect〕

Therefore, according to the present invention, when the paper is threaded through the rotary press, the paper roll mounted on the mounting means of the paper feeding unit is rotated to unwind the paper stock according to the speed of the paper threading belt or the guiding means. Moreover, an operator for braking is not necessary, and labor can be saved.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of the present invention, FIGS. 2 and 3 are schematic views for explaining the operation of the present invention, and FIG. 4 is a slit for catching a paper feed belt. It is a perspective view. (1) ... Paper threading belt (guide means), (1) S ... Slits of paper threading belt, (1) a ... Paper edge of paper threading belt catching section, (11), (12), (12) ) A ... Guide pulley, (13) ... Belt drive, (13) M ... Motor, (2) ... Unwinding means, (2) M ... Motor,
(21) …… Unwind belt, (21) a …… Unwind belt at unwind position, (21) b …… Unwind belt at unwind position,
(3) ... Control means, B ... brake means, BB ... brake belt, F ... folding part, FB ... former plate, G
(1), G (2), G (3), G (4) ... Guide roller, MM ... Rotary press drive motor, NP ... Web roll, P ...
... Printing section, RF ... Paper path section, S ... Paper feeding section, SA ... Rolling paper mounting means, SA (1) ... Swivel axis section, W ... Rate paper

Claims (1)

[Claims] 1. A rotary press comprising a paper feed unit equipped with a winding paper loading unit, a printing unit, a folding unit, and a paper path unit linking these units, from the paper feed unit to the paper path unit or the folding unit. Guiding means for guiding the paper roll of the roll paper to the unit, and unwinding means for driving and rotating the roll paper mounted on the mounting means to roll out the roll paper.
An automatic paper threading device comprising: a control means for controlling the guiding means and the unwinding means in association with each other so as to match the operation amount of the guiding means with the unwinding amount of the paper by the unwinding means.