JPS5978054A - Control of rider roll and apparatus thereof - Google Patents

Abstract

PURPOSE:To take-up the traveling web of the processed paper such as cellophane automatically and softly by balancing the empty weight of a rider roll and controlling the contact pressure according to the quality of paper. CONSTITUTION:When a web 13 is taken-up through a guide roll 12, the contact pressure of a rider roll 2 with respect to a taking-up roll 1 is controlled in accordance with the quality of paper, and taking-up is performed with a soft hardness. As the taking-up diameter of the taking-up roll 1 varies, the rider roll 2 is pushed-up in the direction of arrow A. Said pushing-up force is detected by a tension detector 3, and the electric signal is input into a tension controller 4, and then the output supplied from the tension controller 4 is input into an electricity-air converter 5. The output of the converter 5 feeds an air pressure signal into an air cylinder 6 to push-up an arm 7, and the contact pressure is made constant. The stroke of the cylinder due to the variation of the taking-up diameter of the roll 1 is detected by an analogue position transmitter 9, and the signal is input into the controller 4 to control the contact pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for automatically and softly winding a running web of paper and processed paper (including cellophane, laminates, coats, plastic films, metal foils, and other tissue paper) onto a new core. The present invention relates to a method and apparatus for controlling a rider roll that forms fields.

Conventionally, in the winding of this yuzu, when the winding diameter of the wide web becomes thicker and the rider roll is lifted, the rider roll's own weight is applied as contact pressure to the winding roll, and as a result, the winding of the winding roll is slowed. The paper could not be rolled softly, resulting in defects that adversely affected the paper quality.

Therefore, the purpose of the present invention is to meet the demand for a soft winding rail, and to meet this demand, by balancing the own weight of the rider sail, the contact pressure can be controlled according to the paper quality, and the hardness of the winding can be softly controlled. The object of the present invention is to provide a method and device for controlling a rider four wheel that can be obtained.

Other objects and features of the invention will become apparent from the drawings and the following description.

Therefore, with respect to the figures showing preferred embodiments of the invention:
FIG. 1 is a side view showing the contact pressure control by the rider roll of the present invention, where l is the winding roll of the web in the winder or supercalender of a paper making machine, λ is the rider roll that contacts the winding roll, and 3 is a tension detector that detects the force pushing up the rider roll λ, 6 is an air cylinder that pushes up the arm, 7 and 7A are arms, and r is a velofram cylinder used to cancel the weight of the rider roll λ and prevent it from lifting. be.

Next, the actual contact pressure during winding with the above configuration will be explained.

First, when the web 13 is wound up via the guide roll/2 (sometimes it passes the lower side), a rider roll is applied to the take-up roll/2 to control the contact pressure according to the paper quality and softly adjust the hardness of the winding. This is what we do. However, as the state of the take-up roll / changes from the beginning of winding to the end of winding, the rider roll λ is pushed up in the direction of the arrow A, and the tension detector 3 detects this pushing up force.

This detector 3 is oscillated by an air cylinder B that adapts to changes in the amount of winding. Also air cylinder 6
An arm 7 is interposed at one end of the mouth and the end of the door.
A tension detector 3 and a bellofram cylinder l are interposed between the fulcrum Q at one end and the other end, and are further connected to another arm 7A. .7A to prevent the rider roll 2 from floating up using the fulcrum 07 as a reference.

In addition, the tension detector 3 detects the contact pressure position of the rider roll co, sends an electric signal to the arm 7 via the tension controller φ shown in FIG. is activated to control the contact pressure to a constant level.

Therefore, in conventional devices of this kind, the adjustment of the rider roll λ was not performed via the bellofram cylinder 1, but was carried out using only the air cylinder 6. However, since it is difficult to control the individual swing of the contact pressure, the present invention winds one side with the air cylinder 6 and tongue 7 ram cylinder and uses it to shift the rider rollco according to the load.
The other side is made to respond sharply to fluctuations in the slight air pressure of the compressed air in contact with the take-up roll l, and when the take-up roll is near the position when the width is large, the weight of the rider roll λ is canceled and floated. The purpose is to prevent cliffs.

Next, the contact pressure calculation will be explained with reference to FIG. 2. The contact pressure F is as follows.

When the minimum winding diameter is 2 W X Cos θ7 When the maximum is the diameter 80 W The arm angle θ2 is the arm angle at the maximum winding diameter, and from this result, as shown in the fs3 diagram, during the cylinder stroke S, there is a tapered winding of Fl)F2. This is the result of detecting the stroke S of the air cylinder corresponding to the change in the winding diameter using an analog position transmitter in order to make the contact pressure change approximately constant. Also, since the tapered winding of the contact pressure change is brought close to the virtual straight line of E-B in a fine approximation, it is possible to freely control with high precision.

Next, Fig. 1 will be explained. This figure shows a block diagram of the equipment configuration for adjusting and controlling the rider roll.

When the lifting force of the rider rollco is detected by the tensilon detector 3 and the electric signal of this detector 3 is inputted to the tension controller radar, the output from the controller Hiro is inputted to the electric air converter 5. The output at that time supplies an air pressure signal to the air cylinder B to push up the arm 7 and keep the contact pressure constant. Further, the analog position transmitter 9 detects the stroke S of the cylinder corresponding to the change in contact pressure caused by the change in the winding diameter of the take-up roll. At this time, the signal from the oscillator 9 is input to the tension controller radar via the resistance-current converter IQ. That is, by comparing the two input signals, the position of the air cylinder B is controlled so that a constant force is always applied to the tension detector 3, and the contact pressure is kept constant.

In order to further improve the accuracy of contact pressure control, if a broken line converter // is inserted next to the resistance-current converter IO, the line diagram of the broken line is not shown, but the virtual straight line of the B-B line shown in Fig. 3 can be used. Since the amplitude with respect to the reference line decreases, the contact pressure becomes almost constant,
Accuracy can be increased.

As is clear from the above description, by using the contact pressure control of the rider roll of the present invention, the contact pressure can be arbitrarily changed from the approximate Q to the necessary contact pressure even for a wide and large diameter roll of the web. Since it affects the quality of the paper, it has the effect of making the winding hardness or the softness of the winding roll.

[Brief explanation of drawings]

Fig. 1 is a side view of contact pressure control using the rider roll according to the present invention, Fig. 2 is a principle diagram of contact pressure calculation, Fig. 3 is a diagram of an example of contact pressure change due to a change in the rider whirl angle, and Fig. φ is the lidar roll. FIG. 2 is a block diagram of the contact pressure configuration. In the same figure, l is the winding wheel, λ is the rider roll, and 3
is the tension detector, Hiro is the tension controller, j
is an electric air converter, B is an air cylinder, 7 and 7 are arms, and is a flam cylinder, 9 is an analog position transmitter, /Q is a resistance-current converter, /3 is a web, and A is an arrow F is the direction, F is the contact pressure O is the angle, Q is the fulcrum, S is the cylinder stroke, and W is the rider roll heavy wax. Patent applicant Minamisenju Seisakusho Co., Ltd. Representative: Irio Takaoka Japan Regulator Co., Ltd. Representative: Katsutoshi Kubota

Claims (1)

[Claims] / In a method of controlling a rider roll that comes into contact with a monitoring roll, a rider roll is provided at the tip of an arm 7A, and the arm 7A is connected to another arm 7, and the tension detector 3 and the bellofram are connected. It is also connected to the cylinder r, and the tension detector 3 connects the electrical system of the tension controller Hiroshi, and the tension detector 3 connects the position oscillator D and the air system of the resistance-1 current converter/Q to the electrical system tension controller. The lidar is characterized in that the contact pressure of the lidar roll λ is controlled by moving the air cylinder 6 from the electric air converter 5 by matching two connections, and restoring the pressure to the tension detector 3. Four-
control method. In a device for a rider roll that is in contact with a take-up roll, a rider roll λ is provided at the tip of an arm 7A, a tension detector 3 and a verofram cylinder t are provided at the other end, and a Through arm 7,
The tension detector 3 and the bellofram cylinder t are installed at one end of this arm 7, and the arm 7 is further connected to the air cylinder B, and the contact pressure of the rider rollco and the bellofram cylinder zone are connected to the fulcrum Q at the other end. A control device for a rider roll, characterized in that the self-weight of the rider roll λ is canceled by the above-mentioned.