JP3682806B2 - Hot rolled material winding device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hot rolled material winding device that is installed in series in a rolling mill and winds and rewinds a rolled material.
[0002]
[Prior art]
The conventional hot rolling equipment that rolls from a thick plate (slab) to a thin plate (strip) in a single line requires a large number of mills (rolling mills), so the total length of the rolling line becomes very long. There is. Therefore, in order to shorten the rolling line, for example, hot rolling facilities such as JP-A-7-80505 and JP-A-7-185605 have been proposed.
[0003]
As shown schematically in FIG. 5 (A), “Casting hot rolling continuous equipment” disclosed in Japanese Patent Laid-Open No. 7-80505 is intermediate between a rough mill 1 (rough rolling mill) and a finishing mill 2 (finish rolling mill). The winding and rewinding device 3 is arranged, and the slab (slab) obtained by continuous casting is roughly rolled and wound, and then rewinded and finish-rolled to reduce the size of the equipment and save energy. .
[0004]
Japanese Patent Laid-Open No. 7-185605 “Hot Thin Plate Material Manufacturing Equipment and Hot Thin Plate Material Manufacturing Method” rewinds to the entry / exit side of the rolling mill 4 as schematically shown in FIG. A combined use winding furnace 5 is disposed, and a slab having a specific thickness is rolled in a plurality of passes while being repeatedly wound and unwound in the combined winding furnace 5, thereby producing a hot sheet material with compact equipment. Is. This equipment is a so-called Steckel mill, which has a slot (clamping slit) in the drum 5a of the winding furnace 5, and inserts the tip of the rolled material into the slot to rotate the drum 5a to ensure that the rolled material is It is designed to wind up.
[0005]
[Problems to be solved by the invention]
In the above-mentioned equipment disclosed in Japanese Patent Laid-Open No. 7-185605 (FIG. 5A), since a thin plate (strip) is taken up, the length of the rolling line can be shortened. Therefore, the number of mills can hardly be reduced, and as a result, there is a problem that the total length of the equipment is still long. Further, the winding / unwinding device 3 in FIG. 5 (A) has an advantage that the steel plate can be wound without a core, but for example, it is difficult to wind a thick plate of 30 mm or more or a thin plate of 10 mm or less, There is a problem that the application range is narrow, and it takes time to handle the wound coil, and the cooling is promoted.
[0006]
On the other hand, in the equipment of JP-A-7-185605 (FIG. 5B), the number of mills can be greatly reduced, thereby making it possible to greatly reduce the overall length, and the stickel mill can be applied from a thin plate to a thick plate. However, the part inserted into the slot (clamping slit) of the drum 5a is reversely wound, so that the tip is bent in the nose, making it difficult to insert the tip smoothly. The speed of the drum 5a needs to be about 1/10 that of rolling (for example, 20 to 30 m / min). As a result, it is necessary to frequently accelerate and decelerate, resulting in low productivity. is there.
[0007]
In order to solve such a problem of the stickel mill, a “winding device with a heating furnace” (Japanese Utility Model Publication Sho 62-101617) for correcting the position of the winding drum by detecting the upper warping of the tip, an upper warping correction device "Steel Mill Winding Control Device" (Japanese Unexamined Utility Model Publication No. 62-189814) equipped with a "Stickel Mill Winding Control Device" that reduces the loss during acceleration / deceleration by optimizing the drive timing of the winder No. 63-36918) has been proposed, but the essential problems such as nose bending at the tip and winding at low speed have not been solved.
[0008]
The present invention has been developed to solve such problems. That is, an object of the present invention is to roll up a rolled material from a thick plate to a thin plate at a high speed even during winding without adding warpage or bending, and to efficiently heat and heat the rolled material. An object of the present invention is to provide a hot-rolled material winding device that can perform the above-mentioned.
[0009]
[0010]
[0011]
[0012]
[0013]
[0014]
[0015]
[Means for Solving the Problems]
According to the present invention , the winding shaft for winding the rolled material, the first guide portion for guiding the rolled material to the winding shaft, and the winding from the first guide portion to the position of the axis of the winding shaft. A second guide portion having a substantially arc-shaped guide surface along the shaft, and the winding shaft includes a mandrel formed of a horizontal rotating shaft, and a sleeve that is fitted with the mandrel and has a recess in the circumferential direction. And at least one grip that is provided in the recess and presses the tip of the rolled material against the outer surface of the mandrel, and the second guide portion includes an arc plate having a slit parallel to the axis of the mandrel, and the arc plate And a roller that rotates about an axis parallel to the axis of the mandrel, and is movable in the radial direction of the mandrel, and the roller has an enlarged diameter portion that has a radius protruding inward from the slit of the arc plate. And shrinkage that does not protrude from the slit And the outer surface of the grip has a concave portion corresponding to the diameter-expanded portion of the roller, and when the rolled material tip reaches the second guide portion, it is pressed with the grip. After that, roll the rolled material on the sleeve and grip.
[0016]
The guide surface includes an arc plate having a slit parallel to the axial direction of the mandrel and a roller having an enlarged diameter protruding from the slit. The roller has an enlarged diameter portion protruding from the slit in the axial direction and a reduced diameter portion not protruding from the slit in the axial direction, and the outer surface of the grip has a recess corresponding to the enlarged diameter portion of the roller. With such a configuration, the lower surface of the rolled material is separated from the arc plate by the amount of protrusion of the enlarged diameter portion, and the outer surface of the grip is a concave portion at a position corresponding to the enlarged diameter portion. It can be located on the surface and can enter between the lower surface of the rolled material and the upper surface of the arc plate. Thereby, the front-end | tip of a rolling material can be caught with a grip and can be pressed on the outer surface of a mandrel. FIG. 3 shows this state, 10 is a rolled material, 30 is an arc plate, 30a is a slit provided on the arc plate, 32 is a grip, 31 is a roller, and a circle indicated by a solid line is a reduced diameter portion 31b and a broken line The circle shown indicates the enlarged diameter portion 31a. A gap is formed between the lower surface of the rolled material 10 and the upper surface of the arc plate 30 by the enlarged diameter portion 31a, and the tip 32a of the grip 32 can enter the gap.
[0017]
[0018]
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, reference examples and embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram for explaining a reference example . The heat-retaining furnace device 50 includes a first guide portion 11 that guides the rolled material 10 into the device, a winding shaft 13 that winds the rolled material 10 while holding the tip of the rolled material 10, and a grip 24 on the winding shaft 13. And a heat-retaining furnace 27 that covers and heats the first guide part 11, the second guide part 12, and the winding shaft 13.
[0020]
In the 1st guide part 11, the upper guide roll 14 and the lower guide roll 15 are provided in the entrance, and the rolling material 10 passes through this. An upper guide plate 16 having a center of rotation at the same position as the axis of the upper guide roll 14 and a lower guide plate 17 having a center of rotation at the same position as the axis of the lower guide roll 15 are provided. After the leading end of the rolled material 10 is guided at the position and wound on the winding shaft 13 several times, it is retracted to a position indicated by a two-dot chain line to cope with an increase in the diameter of the coil 26.
[0021]
The second guide portion 12 is provided with an arc plate 18 that is gently continuous with the lower guide plate 17 and that extends around the axis of the winding shaft 13 and extends slightly above the axis. The arc plate 18 is a support block. The circular arc plate 18 is supported by a horizontal support member 20 in a horizontal direction so that the support block 19 can be moved toward and away from the winding shaft 13. The horizontal support member 20 can be moved horizontally by a driving device such as a cylinder (not shown) provided outside through the furnace wall of the heat-retaining furnace 27. When winding is started, the horizontal support member 20 holds the tip of the rolled material 10 with a grip 24 at a position indicated by a solid line, and then retracts to a position indicated by a two-dot chain line after being wound around the winding shaft 13 several times. Thus, it is possible to cope with an increase in the diameter of the coil 26.
[0022]
The winding shaft 13 is fitted with a sleeve 22 having a recess 23 in part along the circumferential direction of the mandrel 21. A grip 24 is rotatably attached to the recess 23 by a rotary shaft 25. The grip 24 is rotated by a cylinder or the like (not shown) and pressed against the recess 23 while sandwiching the tip of the rolled material 10. The winding shaft 13 rotates in the direction of the arrow of the mandrel 21 at a slightly lower speed than the rolling material 10 until the rolling material 10 is wound. After confirming that the grip 24 sandwiches the tip of the rolled material 10 with a detector (not shown), the grip 24 is accelerated to reach the speed of the rolled material 10. The rolled material 10 is wound on the outer periphery of the sleeve 22 and the grip 24. Since the outer surface of the grip 24 has the same shape as the outer peripheral surface of the sleeve 22 with the tip of the rolled material 10 sandwiched, the shape of the coil 26 is circular.
[0023]
The 1st guide part 11, the 2nd guide part 12, and the winding shaft 13 are equipped in the heat-retaining furnace 27 which provided the heat-retaining apparatus which is not shown in figure. In addition, since there is no opening except the rolling material 10 intake of the 1st guide part 11, on the other hand, since a horizontal support material penetration part is sealed, since airtightness can be made high, heat retention efficiency becomes high.
[0024]
Next, a first embodiment of the present invention will be described. FIG. 2 shows the configuration of the first embodiment . In the present embodiment, a roller is provided on the arc plate 18 of the reference example , and the tip of the rolled material 10 is securely sandwiched by the grip 24, and the rest is the same as the reference example . The same reference numerals as those in FIG. 1 represent the same members. FIG. 3 is a detailed view of the step roller 31 and the step grip 32, and FIG. 4 is a sectional view taken along line XX of FIG. The guide surface is composed of a circular arc plate 30 having a plurality of slits 30a (four in FIG. 2) in the axial direction of the mandrel 21, and a stepped roller 31 having an axis in the slit direction at the slit position is an outer surface of the slit 30a. More partly protruding. The stepped roller 31 has a configuration in which portions with different diameters appear alternately in the axial direction. The width direction of the grip 24 is also a stepped grip 32 having a shape corresponding to the stepped roller 31.
[0025]
As shown in FIG. 4, the stepped roller 31 has the reduced diameter portions 31b and the enlarged diameter portions 31a alternately arranged, and the outer surface shape of the stepped grip 32 forms a recess 32a at a position corresponding to the enlarged diameter portion 31a. . Further, as shown in FIG. 3, the circle constituting the reduced diameter portion 31 b of the stepped roller 31 is in contact with the surface of the arc plate 30 with slit, and a part of the enlarged diameter portion 31 a indicated by a broken circle is It protrudes from the slit 30a. With this configuration, as shown in FIG. 3, the tip of the stepped grip 32 comes into contact with the slit arc plate 30, while the tip of the rolled material 10 comes into contact with the enlarged diameter portion 31 a indicated by the broken line. Can be inserted between the lower surface of the rolled material 10 and the upper surface of the slit arcuate plate 30, and the stepped grip 32 can surely sandwich the tip of the rolled material 10 and press it against the outer peripheral surface of the mandrel 21.
[0026]
【The invention's effect】
As is clear from the above description, the present invention is such that a sleeve having a recess is fitted to a mandrel, a grip is provided in the recess, and the tip of the rolled material entering along the arcuate guide is sandwiched between the sleeve and the sleeve. Since it winds, it can wind up at high speed, without bending the front-end | tip of a rolling material. Moreover, it can wind still more reliably by providing a stepped roller in a guide part.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a reference example .
FIG. 2 is a diagram illustrating a first embodiment of the present invention.
FIG. 3 is a diagram for explaining details of a stepped roller 31 and a stepped grip 32;
4 is a cross-sectional view taken along line XX in FIG.
FIG. 5 is a configuration diagram of a conventional rolled material facility.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Rolled material 11 1st guide part 12 2nd guide part 13 Winding shaft 14 Upper guide roll 15 Lower guide roll 16 Upper guide plate 17 Lower guide plate 18 Arc plate 19 Support block 20 Horizontal support material 21 Mandrel 22 Sleeve 23 Recess 24 Grip 25 Rotating shaft 26 Coil 27 Heat holding furnace 30 Arc plate with slit 31 Stepped roller 32 Stepped grip 50 Heat holding furnace device

Claims (1)

A winding shaft for winding the rolled material, a first guide portion for guiding the rolled material to the winding shaft, and a substantially circular shape along the winding shaft from the first guide portion to the position of the axis of the winding shaft. A second guide part having an arcuate guide surface,
The winding shaft includes a mandrel formed of a horizontal rotating shaft, a sleeve fitted with the mandrel and having a recess in the circumferential direction, and at least one grip provided in the recess to press the tip of the rolled material against the outer surface of the mandrel And comprising
The second guide portion includes an arc plate having a slit parallel to the mandrel axis and a roller provided on the arc plate and rotating about an axis parallel to the mandrel axis, and is movable in the radial direction of the mandrel. The roller has an enlarged portion having a radius that protrudes inward from the slit of the arc plate and a reduced diameter portion that does not protrude from the slit in the axial direction, and the outer surface of the grip is the outer surface of the roller. The range corresponding to the enlarged diameter portion is a recess,
A hot-rolled material take-up device, wherein the rolled material is pressed with a grip when the leading end of the rolled material reaches the second guide portion, and thereafter the rolled material is wound on the sleeve and the grip.

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