JPH02235519A - Method for controlling side guide of strip coiler - Google Patents

Abstract

PURPOSE:To tightly roll a strip without damaging the strip edges by setting a passing position of the strip by one side guide provided with opening degree setting mechanisms and contact surface pressure adjustment mechanisms and adjusting the contact surface pressure with the strip by the other side guide. CONSTITUTION:Directly after the strip is coiled round a strip coiler 1 the side guides 2a, 2b on both sides are closed as far as they come into contact with the strip 5. Thereafter, the position for a side guide on one side, for example, 2a is fixed and the other side guide 2b is brought into contact with the strip under a suitable contact surface pressure set in accordance with the dimension, material, etc., in advance. A detector 41 of the pressure to the strip 5 is installed on each contact surface adjustment mechanism 4a, 4b, contact pressures between the strip 5 and each side guide 2a, 2b are detected, hydraulic cylinders 32 are operated through controllers 31 of the opening degree setting mechanisms 3a, 3b to carry out a closed motion to the strip 5. In this way, the coil edges are put in order and the strip can be coiled tightly.

Description

[Detailed Description of the Invention] <A) Industrial Application Field The present invention prevents irregularities in the end faces of the coil and prevents damage to the strip edges when winding the strip into a coil using a strip winding machine. side guide ii
Itg! It concerns the method. (Example) The side guides of conventional strip winding machines are sometimes used not only to prevent the strip from meandering, but also to apply backward tension to the strip in order to wind the strip tightly. At this time, it is necessary to finely adjust the opening degree of the side guides so that even if the width of the strip changes, the side guides and the strip are always maintained in a suitable state of contact. Methods for adjusting the opening according to variations in the strip width of the side guide include a method in which the side guide is supported by pneumatic or hydraulic pressure cylinders and pressed against the strip/tube to absorb the variation, and a method in which the side guide is installed in front of the side guide. A method of feedforward controlling the opening degree of the side guide based on the measured value of the width measuring device (Japanese Patent Application Laid-open No. 63-4 (16
Publication No. 15), etc. In feedforward control using a width gauge in front of the side guide, there are problems with the accuracy of estimating the timing of the width measurement point passing through the side guide and the response speed of the control system.
Due to wear of the side guide contact surface, it is difficult to find the correct position Mm to maintain proper contact with the strip. Therefore, it is desirable to support the guide with a pneumatic or hydraulic cylinder so that the guide follows the strip edge. However, when this method is adopted on both sides, if the air or hydraulic pressure is too low, the strip will be allowed to meander, and the side guide will no longer fulfill its original role of preventing the coil end faces from being uneven. On the other hand, if the pressure is too high, the strip will buckle. The invention disclosed in Japanese Unexamined Patent Publication No. 63-40615 mentioned above is a side guide control method for dealing with the bending of the tip of the strip. This is not a control method for the bottom section, which requires full strip length or rear tension. Furthermore, although the concept of controlling the position of the side guides has been known for some time, the concept of pressure control to maintain appropriate contact surface pressure is not disclosed. Although the invention disclosed in the above-mentioned publication can cope with large disturbances such as bending, it is impossible to maintain control to maintain a delicate contact state. (C) Problems to be Solved by the Invention The problems to be solved by the present invention are to prevent the strip from meandering and to maintain contact between the strip and the side guides when the strip is wound into a coil shape by a strip winding machine. The object of the present invention is to obtain a side guide control method that maintains the strip edge and prevents damage to the strip edge.

(2) Means for Solving the Problems The side guide control method of the present invention provides an opening degree setting mechanism and a contact surface pressure adjustment mechanism in a pair of side guides provided on the entry side of a strip winding machine. The above problem is solved by means provided on the side guides, one side guide determines the strip passing position, and the other side guide adjusts the contact surface pressure with the strip. (E) Function In the side guide control method of the present invention, immediately after the strip is wound on the strip winder, both side guides are closed until they come into contact with the strip, and then the position of one side guide is fixed, and the other side guide is closed. Bring the side guide into contact with the strip with an appropriate contact pressure set in advance according to the strip dimensions, material, etc. At this time, if the coil after winding is to be transported by a conveyor or the like in an up-end manner, the side that will be the bottom surface during transport can be selected as the fixed position side. (F) Embodiment An embodiment of the method of controlling the side guide of the stop winder of the present invention will be explained with reference to FIGS. 1 to 4. As shown in the figure,
A pair of side guides 2a provided on the entry side of the strip winder 1. 2b, opening setting devices 1113a, 3b
and contact surface pressure yJ adjustment mechanisms 4a, 4b are provided on each side guide 2a, 2b, and one side guide <<For example, 2
The passing position of the strip 5 is determined by a), and the contact surface pressure with the strip 5 is adjusted by the other side guide (for example, 2b). The pair of side guides 2a and 2b are initially set to be wider than the strip width so as not to obstruct the entry of the strip 5. Immediately after the tip of the strip 5 is wrapped around the take-up fit, it is customary to close it to the width of the strip. A pressing force detector 41 against the strip 5 is installed in each contact surface pressure adjustment mechanism 4a, 4b. By this, the contact pressure between the strip 5 and each side guide 2a, 2b is detected, and the hydraulic cylinder 32 is operated by using the controller 31 of the opening setting mechanism 3a, 3b, and the closing operation is performed until it contacts the strip 5. can be carried out. Then, select one side guide (2b in the illustrated example).
is used as a reference for preventing the strip 5 from meandering, and its guide position is maintained constant by the controller 31. At the same time, the guide 2a on the opposite side adjusts the pressing force based on the signal from the pressing force detector 41 so that the contact surface pressure is set in advance according to the strip size, material, etc. (Fig. 4). By this method, the strip 5 can be guided with a stable minimum contact pressure at all times even when the strip width fluctuates, without causing any meandering of the strip 5. If it is necessary to apply rearward tension to the strip 5 by the side guides 2a and 2b in order to carry out the stripping, the frictional force should be set to a value that can be generated.
In other cases, to prevent damage to the strip edges and damage to the side guide contact areas,
It is desirable to set it to the lowest possible value. In addition, just before the strip winding is completed, it becomes difficult to apply tension to the strip, making it susceptible to buckling. Therefore, the side guides are switched to position control at the appropriate timing according to a preset pattern, and are held or released. You can also. As shown in FIG. 3, in the control method of the present invention, a hydraulic cylinder 32 and a hydraulic unit 33 capable of detecting stroke positions are used as the contact surface pressure adjustment mechanisms 4a, 4b of the side guides 2a, 2b. The structure is such that the contact force with the strip 5 is directly transmitted to the cylinder 32. Thereby, the side guide pressing force can be detected as a differential pressure from the signals of the pressure detectors 41 on the rod side and head side of the cylinder 32. The signal from the pressure detector 41 and the stroke position detection signal are processed by the controller 31, and based on control data such as the contact surface pressure value, an operation signal is issued to the hydraulic unit 33 to control the side guides 2a and 2b. Side guide 2a. As the opening degree setting mechanisms 3a and 3b of 2b, setting values may be inputted into the controller 31 in advance using the contact surface pressure adjustment mechanisms 4a and 4b described above. Next, specific examples of the method of the present invention will be described.
When rolling plate thickness 3mm x plate width 900ou + list strip at line speed 800 lpl, material contact length 5
I was guided by a 300RI side guide. The work side (operating side) was set at a position of 4501u1 from the center, and the strip tip was passed through with the drive side closed to a position of 500 mm from the center. After that, the drive side was switched to pressure control, the cylinder oil pressure was controlled so that the pressing force was 2 tons, and the contact surface pressure was reduced to 0. 12
5 kg / 0111 2, the strip was guided in an appropriate state, and a good winding shape was obtained with edge irregularities equal to only the variation in the strip width. (g) Effects According to the present invention, when winding a strip, it is possible to align the end faces of the coil and wind it tightly without damaging the strip edge. As a result, the strip edges are not damaged during coil handling, and the occurrence of scratches due to loose winding can be prevented, improving manufacturing yields.

[Brief explanation of the drawing]

Figure 1 is a side view of a side guide to which the method of the present invention is applied. Figure 2 is a plan view of Figure 1, and Figure 3 is a front view of Figure 2.
Figure 4 is an explanatory diagram of the method of the present invention. 1: Strip winder 2a, 2b: Side guide 3a. 3b: Opening degree setting mechanism 4a. 4b: Contact surface pressure adjustment mechanism 5: Strip 41: Pressure detector Fig. 1 2a. 2b

Claims (1)

[Claims] In a pair of side guides provided on the entrance side of the strip winder, an opening degree setting mechanism and a contact surface pressure adjustment mechanism are provided on the side guides, one side guide determines the strip passing position, and the other side guide determines the strip passing position. A method for controlling a side guide of a strip winding machine, characterized in that the side guide adjusts contact pressure with the strip.