JPH11199103A - Reel device of paper machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reel device of a paper machine with stable take-up performance so as to prevent linear load from being disordered in transfer, and prevent a paper from wrinkling, slipping and loosening in take-up process. SOLUTION: A hydraulic cylinder 3i of a primary arm for PA pressurization is attached with a load cell 3j and is connected electrically to a controlling part 11 to which a predetermined pressure target is inputted. A hydraulic cylinder 6a of a secondary arm for SA pressurization moving is attached with a load cell 6d and a position encoder 6e, and is connected to the controlling part 11 to which a predetermined position target, pressure target and pressure threshold are inputted. The secondary arm is a system which performs position control and force control selectively, and is adjusted to the position target within a pressure threshold and controlled along the pressure target when exceeds the pressure threshold.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reel device for winding a paper fed from a paper machine at a constant speed, and more particularly, to a linear pressure of a roll paper roll transferred from a primary arm to a secondary arm. The present invention relates to a reel device of a paper machine for controlling the paper machine.

[0002]

2. Description of the Related Art A reel device of a paper machine has a primary arm disposed on both sides of a reel drum, a horizontal rail for rollingly supporting a web roll, and a secondary arm.
A continuous operation for 24 hours is performed while sequentially changing the reel frames that have become full. In the conventional reel device, in the process of winding the paper roll, the cylinders at both ends of the primary arm or the secondary arm are given a constant pressure by air pressure or hydraulic pressure to press the paper roll against the reel drum.

In order to obtain a stable take-up paper roll in a reel device, it is necessary to take up the take-up paper roll against the reel drum while maintaining a constant pressing force or a linear pressure having a constant reduction rate. desirable.

[0004]

However, in the conventional reel device, when the roll of paper is transferred from the primary arm to the secondary arm, the pressing forces of the primary arm and the secondary arm are simultaneously added. However, there is a disadvantage that an excessive pressing force corresponding to twice the target linear pressure is applied.

[0005] Further, even when the primary arm and the secondary arm are provided with pressurizing cylinders for linear pressure control, and the transfer is performed while controlling the force with the control unit, the paper roll wound by the secondary arm can be used. After retreating,
When moved by the force control from the retracted position to the position where it contacts the spool gripped by the primary arm, both the spool and the secondary arm are in a moving state, so the pressure rises rapidly when they come into contact, and the control of the pressing force is instantaneous. Had the disadvantage of being disturbed.

[0006] When such an excessive pressing force acts, the paper is wrinkled, displaced or loosened in the winding process, and the roll of the paper roll is lost.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and does not cause disturbance in the linear pressure when the roll of paper is transferred from the primary arm to the secondary arm.
It is an object of the present invention to provide a reel device of a paper machine having stable winding performance in which no loosening occurs.

[0008]

In order to solve the above-mentioned problems, a reel device of a paper machine according to the present invention comprises a primary arm having a pressure cylinder for linear pressure control, and a primary arm for linear pressure control and roll paper delivery. In a reel device of a paper machine having a secondary arm including a pressure transfer cylinder and a control unit electrically connected to the pressurizing cylinder and the pressurizing transfer cylinder, the pressurizing cylinder of the primary arm includes a servo valve control. The PA hydraulic cylinder is provided with pressure measuring means, the pressurizing and moving cylinder of the secondary arm is provided with position measuring means and pressure measuring means on the servo hydraulically controlled SA hydraulic cylinder, and the control unit is provided with a primary arm. The pressure cylinder is controlled in accordance with the pressure target, and the cylinder for pressure movement of the secondary arm is moved below the pressure threshold. Combined with the target and is characterized in that it comprises a servo control module to control in accordance with the target pressure is exceeded the pressure threshold.

The target position of the secondary arm is a standby position. The secondary arm is moved to the standby position while the cylinder length of the SA hydraulic cylinder is measured by the position measuring means, and the spool gripped by the primary arm approaches. Wait for it to come. The pressure threshold is set to a value as small as possible, and at the same time when the spool comes into contact with the pressure measuring means, the pressure moving cylinder of the secondary arm is switched from position control to force control.

After the switching, both the primary arm and the secondary arm are controlled in accordance with the target pressure, and the servo control module of the control unit is set so that the sum thereof becomes a constant or a linear pressure having a constant reduction rate. .

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a front view of a reel device of a paper machine according to the present invention, FIG. 2 is a plan view of the same, FIG. 3 and FIG.
Is a sectional view showing a III-III section and an IV-IV section of FIG. 1, respectively.
FIG. 5 is a sectional view of the reel device at the time of pressure delivery. The reel device 1 includes a reel drum 2 connected to an inverter motor, which is a main drive unit (not shown), a primary arm 3 disposed on both sides of the reel drum 2, a horizontal rail 5 for rollingly supporting a spool 4, and a secondary rail. An arm 6 is provided.

The primary arm 3 has a sector gear 3a provided coaxially with the reel drum 2, a guide rail 3b for rollingly supporting a bearing of a spool 4, and a spool presser 3d which is opened and closed by driving a hydraulic cylinder 3c. The sector gear 3a is a rolling servomotor 3g provided with a reduction gear and a rotary encoder via a pinion gear 3e and a connecting shaft 3f.
Connect to On the other hand, a spool holder 3 holding a spool 4
h is supported by a PA pressurizing hydraulic cylinder 3i controlled by a servo valve.

The PA pressurizing hydraulic cylinder 3i is provided with a load cell 3j at the tip of a rod and a spool 4 for winding paper.
Controls the hydraulic pressure so that a constant linear pressure can be applied to the reel drum 2. Also, PA pressurizing hydraulic cylinder 3i
Is equipped with a position encoder to measure the cylinder length.
The spool presser 3d is pressed by the hydraulic cylinder 3c so that the spool 4 does not protrude from the primary arm 3.

The primary arm 3 loads the spool 4 at the upper position of the reel drum 2, winds the paper around the spool 4 by a frame changing operation, starts operation, and winds up the paper as shown in FIG. Roll to a horizontal position.

Since the secondary arm 6 continues winding while transferring the pressure from the primary arm 3, a hydraulic cylinder 6a for SA pressure movement under servo valve control as a cylinder for linear pressure control and for feeding the roll of paper roll is used. And a position encoder for measuring the length of the cylinder. The secondary arm 6 has a pressure lever 6b and a separation lever 6c. The secondary arm 6 presses the spool 4 transferred from the primary arm 3 onto the horizontal rail 5 so as to maintain a predetermined linear pressure on the reel drum 2, and then paper is removed. The spool 4 which has been wound up and is fully loaded is pushed out to the next step. At the time of this pushing, the SA hydraulic cylinder 6a is operated in the direction opposite to that at the time of pressurization. A load cell 6d is also provided at the tip of the rod of the hydraulic cylinder 6a for SA pressure movement.

The spool 4 is provided with couplings 7, 7 of inner diameter gears at both ends of a shaft core. This coupling 7
Has a configuration detachable from the auxiliary drive unit 8 and selectively connects only one coupling 7. By this connection, the spool 4 on the primary arm 3 and the auxiliary drive unit 8 are mechanically connected.

The linear drive rails 9 for slidably mounting the auxiliary drive unit 8 are provided outside the primary arm 3. The auxiliary drive unit 8 is a device for driving the spool 4, and includes a servomotor 8a, a speed reducer, and a spool coupling attaching / detaching member.

In the reel device 1, while the paper 10 supplied from the upstream of the reel drum 2 is held between the spool 4 and the reel drum 2, its end is wound around the spool 4, and the driving force of the auxiliary drive unit 8 and the reel drum 2 Is used to wind the paper. The peripheral speed of the reel drum 2 is controlled to the speed of the reel or the operating speed. The servo motor 8a performs torque control or speed control in relation to the inverter motor of the reel drum 2 in order to keep the tension of the web constant.

A linear rail 9 on which the auxiliary drive unit 8 is mounted has a hydraulic cylinder 9a for moving the auxiliary drive unit under servo valve control.
And a rolling gear 9b, a pinion gear 9c, and a servo motor 9d for rolling the auxiliary drive unit provided coaxially with the reel drum 2 as auxiliary drive unit rotating means. When the linear motion rail 9 rolls in synchronization with the primary arm 3, its distal end is parallel to the horizontal rail 5 to be supported by the frame 9e. An auxiliary drive unit slide rail 9f is horizontally mounted on the frame 9e, and is connected to the falling linear motion rail 9 to connect the auxiliary drive unit slide rail 9f.
Can smoothly move forward.

In the reel device 1 as described above, the servomotor 3g for rolling the primary arm 3 and the servomotor 9d for rolling the auxiliary drive unit are electronically connected. That is, in order to control the position of the primary arm 3 and the auxiliary drive unit 8, the two servo motors are synchronized and connected by the control unit and rolled integrally.

Further, since the spool 4 moves in the radial direction by increasing the roll diameter by winding the paper, the auxiliary drive unit 8 also moves on the linear rail 9 to follow the spool core. Must. For this reason, the primary arm 3, the secondary arm 6, and the auxiliary drive unit 8
Are connected by the control unit, the position of the take-up paper spool is measured, and this is fed back.

Thus, the correct position of the spool core is grasped, and the auxiliary drive unit 8 is accurately moved in the circumferential direction and the radial direction of the reel drum 2 along with the shaft center on which the spool 4 moves. When the auxiliary drive unit 8 rolls, the overturning moment due to its own weight changes depending on the rolling angle and the radius of the take-up paper roll. However, the own weight of the auxiliary drive unit 8 is loaded on the connected spool 4 by this position control. Without reel drum 2
Also, the web can keep the linear pressure constant.

The auxiliary drive unit 8 rolls to the horizontal position at the same time as the primary arm 3, places the spool 4 on the horizontal rail 5, and transfers pressure from the primary arm 3 to the secondary arm 6. The synchronous position control between the primary arm 3 and the auxiliary drive unit 8 is released, and the synchronous position control between the secondary arm 6 and the auxiliary drive unit 8 is provided at the same time when the spool presser 3d is released.

FIG. 6 shows a control system used at the time of delivery.
It will be described based on. FIG. 6 is a control block diagram of hydraulic cylinders of the primary arm and the secondary arm.
The PA pressurizing hydraulic cylinder 3i of the primary arm 3 is provided with a load cell 3j and is electrically connected to the control unit 11. The control unit 11 receives a predetermined pressure target from an operation panel (not shown). Based on this, the servo amplifier 3n receives the set pressure command, opens and closes the servo valve 3o, and controls the pressure of the PA pressurizing hydraulic cylinder 3i. Spool 4 by pressure
Press. The pressure is input to the control unit 11 as a current pressure signal via the load cell 3j and the load cell converter 3p, and outputs a correction signal to the PA pressurizing hydraulic cylinder 3i again as a deviation from the set pressure.

On the other hand, the SA pressure moving hydraulic cylinder 6a of the secondary arm 6 has a load cell 6d and a position encoder 6e attached thereto and is connected to the control unit 11. Control unit 1
Reference numeral 1 denotes a system in which a predetermined position target, a pressure target, and a pressure threshold value are input from an operation panel (not shown), and selectively performs position control and force control. Position encoder 6
"e" measures the length of the cylinder and outputs it to the control unit 11 as a current position signal. The pressure acting on the load cell 6d is input to the control unit 11 as a current pressure signal via the load cell converter 6f. The control unit 11 controls the servo valve 6h via the servo amplifier 6g based on the input data.
Are opened and closed to adjust the cylinder length of the SA pressurizing and moving hydraulic cylinder 6a.

Here, the position target indicates the standby position of the secondary arm 6, and any position can be designated. The pressure threshold is set to the smallest possible value. When the value of the load cell 6d is equal to or smaller than the pressure threshold, the control unit 11 performs position control. At this time, the control unit 11 issues a position command to the servo amplifier 6g while collating the position target with the current position signal, moves the secondary arm 6 to the standby position, and the spool 4 gripped by the primary arm 3 becomes thicker. Wait for it to come. Here, when the load cell 6d detects that the spool 4 has come into contact with the pressure lever 6b of the secondary arm 6, a current pressure signal is output, and it is determined whether or not this is below a pressure threshold.

When the pressure exceeds the threshold value, the control is switched to a force control for issuing a set pressure command to the servo amplifier 6g as shown in FIG. Here, the pressure target of the secondary arm 6 is a value obtained by subtracting the pressure target of the primary arm 3 from a predetermined linear pressure. FIG. 8 is a graph showing the time lapse of the two pressure targets.
Shown in While the secondary arm 6 is performing position control (OA), the pressure target of the primary arm 3 (hereinafter referred to as P
A pressure target) coincides with the target linear pressure, and the pressure target of the secondary arm 6 (hereinafter referred to as SA pressure target) is zero.

From the point in time when the control of the secondary arm 6 switches to the force control (point A), the PA pressure target gradually decreases while S
The A pressure target is gradually increased by SA pressure target = target linear pressure−PA pressure target. When the delivery time (t0) has elapsed (point B), the target SA pressure matches the target linear pressure, and the target PA pressure is zero.

Such a set pressure command is transmitted to the servo amplifier 3
n and 6g receive and open and close the servo valves 3o and 6h to open the PA pressurizing hydraulic cylinder 3i and the SA pressurizing moving hydraulic cylinder 6
The pressure control of (a) is performed and the spool 4 is pressurized so that a set predetermined linear pressure can be secured. Each load cell 3o,
6d outputs a current pressure signal and sets a correction signal as a deviation to a PA pressurizing hydraulic cylinder 3i and S
A is output to the A pressure moving hydraulic cylinder 6a. In FIG. 8, the target linear pressure is fixed, but it may be a target linear pressure having a constant reduction rate.

As described above, the secondary arm 6 stops at the standby position in advance, and waits for the approach of the spool 4, so that collisional contact with the web roll can be avoided. In addition, a linear pressure having a constant or a constant reduction rate can be ensured smoothly.

When the secondary arm 6 continues winding while pressing the spool 4 toward the reel drum 2 with the pressure lever 6b, the auxiliary drive unit 8 shifts to the drive unit slide rail 9f as the roll diameter of the web roll increases. To a predetermined position.

In a pressurized state of the secondary arm 6, the primary arm 3 is separated from the spool 4 at a predetermined timing and returned to the original position, and the spool frame is changed to support a new empty spool waiting above the reel drum 2. Get ready. The other empty drive unit is connected to the upper empty spool via the coupling on the opposite side, and accelerates to the operation speed.

Immediately before the spool 4 on the horizontal rail 5 becomes full when the rotation is stabilized, the primary arm 3 is again turned over to bring the empty spool into press contact with the reel drum 2 and the fully wound web is reached. The paper is cut between the roll and the spool by high-speed air jet, and simultaneously blown up and wound on the spool to start the next winding operation.

On the other hand, the cut large diameter paper roll is separated from the reel drum 2 by the action of the separation lever 6c of the secondary arm 6, and moves horizontally to the next step. After that, the secondary arm 6 returns to the original position by the position control,
After receiving the spool supported by the primary arm 3 rotated to the horizontal position again, the primary arm 3 starts preparing for the next frame change.

The auxiliary drive unit 8 that has moved horizontally also disconnects the coupling 7 with the spool 4 of the take-up paper roll, shifts from the drive unit slide rail 9d to the linear movement rail 9, returns to the reel drum 2 side, and moves to the next frame. Interlock with the primary arm 3 that is ready for replacement. As described above, the pair of auxiliary driving units 8, 8 on the front and back of the reel drum 2 alternately fall and return, whereby a smooth reel frame change is performed.

[0036]

As described above, the control unit of the reel device of the paper machine according to the present invention controls the pressurizing cylinder of the primary arm in accordance with the pressure target, and controls the pressurizing and moving cylinder of the secondary arm. A servo control module that controls the position target within the threshold value and adjusts to the pressure target when the pressure threshold value is exceeded is provided, so in the process of passing the linear pressure from the primary arm to the secondary arm, It can stop at the standby position.

As described above, the structure is made to wait for the approach of the spool, so that it is possible to avoid the collision of the secondary arm with the web roll. Also, in the delivery process, a linear pressure having a constant or a constant reduction rate can be constantly ensured smoothly, so that a stable winding performance can be realized without wrinkling, slippage, or loosening of the paper in the winding process. .

[Brief description of the drawings]

FIG. 1 is a front view of a reel device.

FIG. 2 is a plan view of the reel device.

FIG. 3 is a sectional view showing a section taken along line III-III of FIG. 1;

FIG. 4 is a sectional view showing a section taken along line IV-IV of FIG. 1;

FIG. 5 is a sectional view of the reel device at the time of pressure delivery.

FIG. 6 is a control block diagram of a hydraulic cylinder.

FIG. 7 is a control block diagram at the time of secondary arm force control.

FIG. 8 is a graph of a time lapse of a pressure target.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Reel apparatus 2 Reel drum 3 Primary arm 3i PA pressure hydraulic cylinder 4 Spool 5 Horizontal rail 6 Secondary arm 6a SA pressure moving hydraulic cylinder 11 Control part

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hidenori Hatsano 1-1-27 Motogo, Kawaguchi-shi, Saitama Hitachi Zou Funami Tomioka Machinery Co., Ltd. (72) Inventor Hirotoshi Shimoda 1-7 Minami Kohoku, Suminoe-ku, Osaka-shi No. 89 Sun Tate Shipbuilding Co., Ltd. (72) Inventor Genji Miyamoto 1-89, Minami Kohoku, Suminoe-ku, Osaka-shi Sun Tate Shipbuilding Co., Ltd. (72) Inventor Yoshihiro Igoku Minami Kohoku, Suminoe-ku, Osaka-shi 1-chome 7-89 Nishitachi Shipbuilding Co., Ltd.

Claims (1)

[Claims] 1. A primary arm having a pressurizing cylinder for linear pressure control, a secondary arm having a pressurizing and moving cylinder for linear pressure control and feeding of a paper roll, and a pressurizing cylinder and a pressurizing and moving cylinder. In a reel device of a paper machine provided with a control unit electrically connected, a pressurizing cylinder of the primary arm is provided with a pressure measuring means to a PA hydraulic cylinder controlled by a servo valve, and a pressurizing moving cylinder of the secondary arm is The SA hydraulic cylinder of servo valve control is provided with position measuring means and pressure measuring means, and the control section controls the pressurizing cylinder of the primary arm according to the pressure target, and controls the pressurizing movement cylinder of the secondary arm. Servo that adjusts to the position target within the pressure threshold and controls according to the pressure target when the pressure threshold is exceeded A paper machine reel device comprising a control module.