JP2904675B2 - Steel plate winding guide device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide device of a winding device for cutting a cold-rolled steel sheet in a coil shape at high speed while cutting a shear while running, and for suppressing the flapping of the coil tail end with a snubber roll. is there.

[0002]

2. Description of the Related Art In a continuous cold rolling mill, as shown in FIG. 2, a cold-rolled steel sheet is cut by a running shear 7 while being wound into a coil at high speed, and the coil is rapidly decelerated and stopped during winding.
At the same time as the next coil is dispensed from the winding device, the operation of starting winding by another winding device is repeated. Further, as a recent equipment trend, the shear cutting speed during running has been gradually increased for reasons such as improvement in productivity or prevention of deterioration in the accuracy of steel plate thickness.

[0003] By the way, the tail end of the coil must be rapidly decelerated until it reaches a fixed position below the winding coil 5a or 5b after cutting the shear during running, and must be stopped. As a result, the deceleration rate also increases, and the tail end of the coil is swung in the winding device by centrifugal force and inertia force, causing fluttering, causing flaws and bending at the tail end, and damage to the winding equipment. It is becoming. In order to solve such a problem, measures have been taken to install fixed guide devices 20, 21 as shown in FIG. 2 for each of a plurality of snubber rolls.

[0004]

However, the conventional winding guide device as described above has the following problems. (I) Since the most upstream snubber roll has a structure in which the coil is pressed around the fulcrum 10 of the arm shown in FIG. 2, the angle θ between the fixed guide on the snubber roll entry side and the entering steel plate is determined by the diameter. Even if the value is set to an appropriate small value θ _{0 in} the case of the small coil 5 a, since θ gradually increases with an increase in the coil diameter, particularly in the case of the large-diameter coil 5 b, the fixed guide 20 θ spreads too much and does not play the role of preventing the tail end of the coil from fluttering.

(Ii) When the winding coil 5a has a small diameter, the front and rear snubber rolls are close to each other. In particular, the entry-side fixed guides installed on the second and subsequent snubber rolls are provided with fixed guides 21 so as to avoid interference with the arm of the snubber roll in front of the snubber rolls and to suppress fluttering of the coil tail end. Even if it is arranged, the winding coil has a large diameter 5b, and in the state where the snubber roll is in the opening direction, the snubber roll interval is widened,
Even if the fixed guide 21 is provided, the hatched space 22 in FIG. 2 will open widely, and it will not be possible to prevent the coil tail end from fluttering. The present invention has been made in view of the above problems, and provides a guide device that guides and winds a coil tail end portion of a steel plate smoothly without flapping and without causing bending or breakage of the steel plate regardless of the diameter of the coil. The purpose is to:

[0006]

The gist of the present invention is as follows. (I) A hydraulic cylinder mechanism, or a link mechanism, a chain mechanism, or a wire in which the inlet guide 2 attached to the most upstream snubber roll by a winding device having one or more snubber rolls is linked to the movement of the arm of the snubber roll. It is made movable by a mechanism or the like, and the angle θ ₀ formed between the entering steel plate 11 and the guide 2 is changed, and this angle is changed to the winding coil diameter.
It is characterized by being able to always keep an appropriate value regardless of the size .

(Ii) An outlet guide 3a to be attached to each snubber roll and an inlet guide 3b to be attached to the snubber roll next to the snubber roll are formed in a skewed shape in the circumferential direction close to the outer periphery of the winding coil. It is characterized in that the winding coil is always joined without interfering with each other within the range of use of the snubber roll from when the diameter of the winding coil is small to when the diameter of the winding coil is large, and the steel sheet is guided. At this time, the space formed by the exit side guide 3a, the entrance side guide 3b, and the outer peripheral surface of the take-up coil to be interlocked should be made as small as possible in all coil diameters to suppress the rattle of the coil tail end. It is preferred in that respect.

[0008]

FIGS. 4 and 5 are explanatory views of the action of the steel sheet take-up guide device of the present invention for suppressing fluttering and whirling of the coil tail end. FIG. 3 shows a state in which the tail end portion of the strip is wound while being guided by the conventional uppermost-stream snubber roll fixing guide section 20.

That is, as shown in FIG. 3, in the case of the small diameter coil 5a, the angle θ ₀ between the fixed guide 20 and the entering steel plate 11 is small, and the tail end is fixed by the fixed guide as 1 ′ → 2 ′ → 3 ′. The coil is stably wound up while being constrained, but in the case of the large-diameter coil 5b, since the angle θ ₀ ′ is large, the tail end of the coil is no longer constrained, and large fluttering occurs as in 1 → 2 → 3. Resulting in.

On the other hand, enters the steel plate 11 to the inlet side guide 2 provided on the most upstream Sunabaroru 4 and rotatable
The angle between the guide and the entrance guide 2 is determined by θ, which is a large guide effect.
_0, when the angle theta ₀ in the case of the large-diameter coil 5b 'is also to be able to hold the coil tail end portion may be wound stably as constrained as with the small-diameter coil 5a 1 → 2 → 3 it can. This is the function exhibited by the steel sheet winding guide device according to the first aspect.

Next, FIG. 5 clearly shows the function exhibited by the steel sheet take-up guide device according to claim 2, wherein the downstream guide 3a of the snubber roll and the upstream guide attached to the snubber roll next to the snubber roll. 3b is formed in a skewed shape in the circumferential direction close to the outer periphery of the winding coil so as to intersect without interfering with each other, so that the tail end of the coil that has entered between the snubber rolls is constantly restrained. It can be wound up stably.

[0012]

FIG. 1 is a side view of a steel sheet winding device (carousel reel) according to an embodiment. In the figure, 1a is the most upstream snubber roll, 1b is the second snubber roll, 1c is 3
When the small-diameter coil 5a or the large-diameter coil 5b wound on the central take-up reel 4 has been wound, the snubber rolls 9a, 9
b, 9c, the arms 12a, 12b, 12
c to the outer periphery of the coil to prevent the tail end of the steel plate from unraveling.

At this time, by making the entry guide 2 of the uppermost stream snubber roll 1a rotatable, the angle between the entering steel plate 11 and the entry guide 2 can be adjusted to reduce the fluttering of the coil tail end and the whirling effect. A large, low angle θ ₀ can always be held regardless of the size of the coil.

At this time, the mechanism for changing the angle of the entrance guide 2 includes not only the hydraulic cylinder drive system shown in FIG. 6 but also a chain (or wire) drive system (FIG. 7), a motor drive system, and a movement of the arm. A link driving method (FIG. 8) or the like utilizing the above is also possible.

Another embodiment of the present invention is a guide device comprising an outlet guide 3a of the most upstream snubber roll 1a and an inlet guide 3b of the second snubber roll 2 shown in FIG. 1, and FIG. FIG. As shown in FIG. 9, the outgoing side guide 3a and the incoming side guide 3b are formed in a skewer shape in the circumferential direction in the vicinity of the outer periphery of the winding coil 5, and do not always interfere with each other regardless of the winding coil diameter. Are mating.

Therefore, the fluttering and whirling of the coil tail end passing between the first snubber roll 1a and the second snubber roll 1b are greatly reduced by being restrained by the guide. At this time, the guide shape may be a round bar shape shown in FIG. 9 or a rectangular cross section.
Further, it is also possible to make the arm portion 12a of the snubber roll itself a skewed shape as an exit side guide to perform the same operation.

[0017]

According to the present invention, flapping and whirling at the tail end of the coil are greatly reduced, so that surface flaws, bending, shape defects, etc. at the tail end of the steel sheet product can be prevented, and the winding equipment can be prevented. The impact force on the equipment is also reduced, which has the effect of reducing equipment failure.

[0018] Furthermore, by enabling stable cutting and winding of the shear during running at a higher speed than before, the production capacity (equipment productivity) is improved and the winding speed at the center of the coil is conventionally increased. At the tail end, the operation of decelerating and cutting the shear during running is performed, but this is because the range of deceleration and acceleration is reduced by increasing the shear speed during running,
This also has the effect of saving energy for the drive motors throughout the line. In addition, the product thickness accuracy is generally improved when the rolling speed is high, so that it is possible to cut the running shear at a high speed, and an effect of improving the thickness accuracy particularly near the tail end of the coil tip can also be expected. .

[Brief description of the drawings]

FIG. 1 is a side view of a steel sheet winding guide device of the present invention.

FIG. 2 is a side view of a conventional steel sheet winding guide device.

FIG. 3 is an explanatory diagram of an operation of a conventional uppermost-stream snubber roll fixing guide.

FIG. 4 is an explanatory view of the operation of the most upstream snubber roll angle variable guide of the present invention.

FIG. 5 is an explanatory view of the operation of the snubber roll intermingling guide of the present invention.

6A is an explanatory view of a guide angle changing mechanism (hydraulic cylinder driving system), and FIG. 6B is a perspective view thereof.

FIG. 7 is an explanatory diagram of a guide angle changing mechanism (chain or wire drive system).

FIG. 8 is an explanatory diagram of a guide angle changing mechanism (link drive system).

FIG. 9 is a detailed explanatory view of a mating guide.

[Explanation of symbols]

1a, 1b, 1c Snubber Roll 2 Angle Variable Guide 3a Combination Outlet Guide 3b Combination Inlet Guide 4 Take-up Reel 5a Small Diameter Coil 5b Large Diameter Coil 6 Coil Car 7 Running Shader 8 Deflector Roll 9a, 9b, 9c Snubber Roll Drive Oil Pressure Cylinders 10a, 10b, 10c Arm fulcrum 11 Entry steel plate 12a, 12b, 12c Arm 13 Guide angle changing mechanism 14 Coil tail end 20 Entry side fixed guide (most snubber roll) 21 Entry side fixed guide (No. 2 snubber roll) 22 Conventional Coil tail flapping area when rolling large diameter guide

──────────────────────────────────────────────────の Continued on the front page (72) Inventor Masakuni Kikuchi 5-3 Tokai-cho, Tokai-shi, Nippon Steel Corporation Nagoya Works (58) Field surveyed (Int. Cl. ⁶ , DB name) B21C 47/00 B65H 18 / 00,23 / 00

Claims (2)

(57) [Claims] 1. A winding apparatus having one or more movable press rolls (snubber rolls 1) arranged in parallel with a drum for holding a tail end of a winding coil around a steel sheet winding drum. , provided upstream guide 2 to be attached to the most upstream Sunabaroru rotatably advances incoming steel plate 11 and the guide 2 and the steel plate winding guide device being characterized in that the changeable angle formed. 2. A downstream guide 3a to be attached to a snubber roll and an upstream guide 3b to be attached to a snubber roll next to the snubber roll are formed in a skewed shape in the circumferential direction close to the outer periphery of the winding coil. 2. The guide guides 3a and 3b are always joined together without interfering with each other at all the snubber roll use positions from a small diameter to a large diameter of the winding coil. Steel sheet winding guide device.