KR20020000070A - A structure of rolls for preventing a strip slipping - Google Patents

Abstract

PURPOSE: An apparatus for preventing slip of a strip is provided in which relative slipping movements are not generated to a preceding strip for the surface of a rotation roll supporting the strip so that welding defects and skewness caused by the strip slipping are prevented. CONSTITUTION: In an apparatus proceeding or stopping a strip by comprising a lower rotation roll(10) which is rotated by being contacted with the lower surface of a strip(S) and forcibly driven by a driving motor, and an upper rotation roll(20) which is idly rotated by being contacted with the upper surface of the strip, the apparatus for preventing slip of the strip(S) further comprises electromagnets(22a,22b) which are integrally fixed to the internal shaft(10c) of the lower rotation roll(10) so that a north pole and a south pole are alternately formed on the outer surface of the lower rotation roll(10) in a length direction of the shaft(10c); and electromagnets(12a,12b) which are integrally fixed to the internal shaft(20c) of the upper rotation roll(20) so that polarities opposite to the electromagnets(22a,22b) of the lower rotation roll(10) are alternately formed on the outer surface of the upper rotation roll(20) in a length direction of the shaft(20c), wherein the electromagnets(12a,12b,22a,22b) receive a power source by being connected to a power supply part.

Description

A structure of rolls for preventing a strip slipping}

The present invention relates to an apparatus for preventing slipping of strips, and more particularly, strips passing through the strips by forming different magnetic poles in close contact with the rotary rolls positioned at the lower and upper portions of the strips to guide the strips. The present invention relates to a strip slipper device which is capable of preventing slipping on the surface of each rotating roll.

In general, the steelmaking facility as shown in FIG. 1 so as to continuously produce the strip (S), shearing machine 120 for shearing the contaminated portion of the strip (S) released from the payoff reel (110), etc. ), A strip (S) changed while passing through the welder 130 and the shearer 120 and the welder 130 for welding the rear end of the preceding strip sheared from the shearer 120 and the leading end of the trailing strip. In consideration of the speed of the looper device 140 to help the continuous movement of the strip (S) at the same speed in the post-process, and help the progress of the strip (S) to be made stable or change the direction It has a plurality of rotary rolls (150, 152, 154).

Some of the rotary rolls 150, 152 and 154 to precisely adjust the progress of the strip (S) serves to stop exactly at the desired position, for example, bridles installed in the trailing of the welding machine 130 The rotary roll 152 for rolls and the rotary roll 154 for snubber rolls are these. In general, the bridle roll rotating roll 152 is connected to an electric motor (not shown) to receive rotational power, and the snubber roll rotating roll 154 is operated by pneumatically or hydraulically by being rotated idle. It is installed to be able to move to the rotation roll 152 for the roll roll by. As schematically shown in Fig. 2, these rotary rolls 152, 154 form solid shafts 152a, 154a in the longitudinal direction therein, and are made of hollow roll bodies 152b, 154b. The outer surfaces of the roll bodies 152b and 154b have rubber coated rubber coatings 152c and 154c.

In such a facility, before entering the looper device 140 through the shearing machine 120, the rear end of the preceding steel plate and the leading end of the trailing steel plate are connected to each other by welding in the welder 130, and the rear end of the preceding steel plate and The leading end of the trailing steel sheet should be stopped at the welding area of the welder 130 while maintaining an appropriate interval, and the rotation rolls 152 and 154 stop the rotation.

However, the snubber roll rotary roll 154 idling against the bridal roll rotary roll 152 forcedly driven by the electric motor shows a phenomenon that the fine roll stops after the fine rotation, which means that the strip S rotates the roll 152. Sliding on the surface of the) and stops in a state that proceeds more than the required position, causing the problem that the position of the strip to be adjusted again by operating the rotary rolls. Of course, in the related art, by operating the cylinder 160 to make the stubble rotation roll 154 closely adheres to the bridle roll rotation roll 152 at a higher pressure, this problem was to be avoided, but the strip had no great effect. In the process of repositioning, the frequent rotation roll forward and reverse rotation caused the wear of each brake to reduce the life of the equipment was frequently maintained and repaired, and there was a problem of productivity decrease accordingly. Particularly, in the case of a thin film work having a thickness of about 0.4 mm, the above problems are frequently used when adjusting the position of the strip so that the distance between the line and the trailing strip is within about 0.8 mm.

In addition, the strip does not slide by a uniform length with respect to the width direction, which is more sliding on the other end than the one end on the width direction, and connecting them to each other by welding causes a shape defect of the strip. There was a meandering and panting problem.

The present invention has been made in order to solve such a conventional problem, the object is to prevent the sliding movement relative to the surface of the rotating roll to support the traveling strips caused by the welding failure due to the sliding of the strip, occurrence of meandering, etc. It is to provide a non-slip strip device that can prevent the.

1 is an explanatory view schematically showing a typical strip production equipment with a shear, a welder and a looper device;

Figure 2 is a cross-sectional view showing the configuration of the rotary roll provided on the upper and lower parts of the strip according to the prior art;

Figure 3 is a cross-sectional view showing a state that the strip advances by the rotary roll equipped in the strip slipper according to the present invention;

Explanation of symbols on the main parts of the drawings

10, 20 ... rolling rolls

10c, 20c ... axis

11, 21 ... spacer

12a, 12b, 22a, 22b ... electromagnet

30 ... bearing

S ... strip

As a technical configuration for achieving the above object, the present invention, the lower rotation roll is rotated in contact with the lower surface of the strip and forced by a drive motor, and the upper rotation roll is made of the upper rotation roll in contact with the upper surface of the strip proceeds In the device configured to stop or stop, the inner shaft of the lower rotary roll integrally fixed to the outer surface of the electromagnet so that the N and S poles are alternately formed in the longitudinal direction of the shaft, the inner shaft of the upper rotary roll In the outer surface integrally fixed to the electromagnet to alternately form the polarity opposite to the electromagnet of the lower rotating roll, the electromagnet is provided to provide a slip slip device characterized in that the power supply is connected to the power supply By.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a cross-sectional configuration view showing a rotary roll 10, 20 having a non-slip strip according to the present invention, the solid shaft (10a) 20a located in the longitudinal direction therein, and made of a hollow cylinder The approximate configuration of the steel roll bodies 10b and 20b and the rubber coating parts 10c and 20c formed on the outer surfaces of the roll bodies 10b and 20b is similar to that of the prior art.

The rotary rolls 10 and 20 of the present invention are each disposed with an electromagnet, these electromagnets are formed in a hollow shape so as to be fitted to the solid shafts 10a and 20a, and the entire outer surface portion is the N pole or the S pole. Will have Of course, in order to maintain the electromagnet is fixed to the solid shaft (10a, 20a) to form a separate fixing means, for example, a male screw portion on the outer surface of the solid shaft and the male screw portion of the solid shaft on the inner surface of the hollow portion of the electromagnet Must have a fixing means to have a female thread corresponding to the, and this fixing means can be made in a variety of and there is no great difficulty in configuring the means here detailed construction is omitted.

One or more electromagnets may be installed on each of the rotary rolls 10 and 20, and in the present invention, a plurality of electromagnets may be installed, and a hollow park cylindrical spacer 11 or 21 for maintaining a gap therebetween. ). In the present invention, the spacers 11 and 21 are positioned between each pair by using a pair of electromagnets having the N pole and the S magnet having the S pole formed thereon.

In any of the above cases, when viewed from the longitudinal direction with respect to the rotary rolls 10 and 20, one rotary roll 10 at one point places the electromagnet 12a having the N pole formed on the outer surface thereof. The rotary roll 20 has a form in which an electromagnet 22a having an S pole is formed on an outer surface thereof, and the electromagnets 12b and 22b adjacent to the electromagnets 12a and 22a have an outer surface thereof. 12a) (22a) to have a different polarity. The adjacent electromagnets 12b and 22b respectively form an S pole and an N pole in the outer surface portion, and thus, the electromagnets 12a, 12b, 22a and 22b are alternately disposed at regular intervals throughout the longitudinal direction. Is placed.

In addition, the outer surfaces of the electromagnets 12a, 12b, 22a and 22b are as close as possible to the inner surfaces of the roll bodies 10b and 20b, so that the corresponding electromagnets pull each other to the maximum. desirable.

In addition, it is preferable to insert non-conductors (not shown) between the electromagnets so as to prevent magnetic weakening caused by being in contact with the electromagnets.

In addition, the electromagnets 32a, 32b, 34a and 34b are respectively installed in the same manner as the above-described configuration in the bearing 30 for rotatably supporting both sides of the rotating roll 20 to be idle, and thus, the rotational support. The electromagnets 32a and 32b are integrally fixed to the outer surface portion of the shaft 24 and the electromagnets 34a and 34b are preferably integrally fixed to the bearing housing 34.

Of course, the electromagnets 12a, 12b, 22a, 22b, 32a, 32b, 34a, and 34b may be connected to a power supply, not shown, to receive power, and such a power supply may control equipment. It is desirable to be able to supply or cut off the electromagnets and change the size of the electromagnets by means of electrical signals provided or provided separately from the computer.

The apparatus of the present invention having the above-described configuration can enter the welding machine or the like without stopping and sliding the strip running between the rotary rolls, which is effective for thin plates as well as thick plates.

When the strip S proceeds at a normal speed, the electromagnets 12a, 12b, 22a, and 22b mounted on the rotary rolls 10 and 20 are cut off from the power supply, or smaller than 30% of the maximum size. Power can be supplied to create only magnetic force. This prevents slipping and meandering of the strip S without any difficulty by the adhesive force provided by the cylinder or the like for the rotary roll 10 that is idling at a normal mailing operation in which the strip S proceeds at a normal speed. Because there is.

Next, to precisely adjust the progress of the strip for welding or other work or to stop at the correct position, the electromagnets 12a, 12b, 22a and 22b mounted on the rotary rolls 10 and 20. Power supply to the bar to raise the magnetic force to the maximum, whereby the electromagnet 12a and the electromagnet 22a are attracted to each other, and the electromagnet 12b and the electromagnet 22b are attracted to each other to rotate the roll 10. 20 are in close contact with each other. In particular, by the electromagnets installed in the axial direction or at regular intervals, uniform adhesion is formed throughout the axial direction, which effectively prevents the sliding and meandering phenomenon, which is a phenomenon that occurs when the adhesion to the axial direction is different from each other. It can be.

In addition, when the rotation of the rotary roll 20, which is provided with the rotational driving force by the electric motor (not shown), stops the rotation, and at the same time forms a magnetic force in the electromagnets 12a, 12b, 22a, 22b, it is idle. The rotating roll 10 also stops rotating at the same time as the rotating roll 20, which is being forced to drive, thus precisely controlling the progress of the strip S to help the welding work and the like to be made very stably and accurately.

Of course, in addition to the electromagnets 12a, 12b, 22a, 22b, it is preferable to apply a magnetic force to the electromagnets 32a, 32b, 34a, 34b mounted on the bearing 30 of the rotary shaft 10, This is because the stop motion of the bearing 30, which helps the rotational movement of the rotary roll 10 to be made smoothly when the rotation of the rotary roll 10 is stopped, is applied to the electromagnets 32a, 32b, 34a and 34b. It can be made more stable by.

As described above, according to the anti-slip device according to the present invention, an electromagnet having a different polarity is provided on each of the rotating rolls rotating in contact with the upper and lower portions of the strip, and axial direction is generated by generating a magnetic force in these electromagnets if necessary. By uniformly increasing the pressing force of the rotary roll against the to prevent the occurrence of meandering of the strip as well as to prevent the slip.

This makes it possible to precisely control the progress and stop operation of the strip has the effect of more stable operation of the equipment equipped with a welding machine.

Claims (1)

Apparatus configured to advance or stop the strip consisting of a lower rotary roll which rotates in contact with the lower surface of the strip S and is forcibly driven by the drive motor, and an upper rotary roll which contacts the upper surface of the strip S for idle rotation. To The inner rotary shaft 10c of the lower rotary roll 10 integrally fixes electromagnets 12a and 12b on the outer surface of which the N pole and the S pole are alternately formed in the axial longitudinal direction, and the upper rotary roll ( The inner shaft 20c of the 20 is integrally fixed to the outer surface of the electromagnets 22a and 22b to alternately form polarities opposite to the electromagnets 12a and 12b of the lower rotary roll 10, The electromagnet (12a) (12b) (22a) (22b) is characterized in that the non-slip device characterized in that connected to the power supply is supplied with power.