JP2003285107A - Continuous billet rolling equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a continuous billet rolling equipment which does not restrict additional works for installation in an existing factory and not lower the temperature of billets extracted from a heating furnace. <P>SOLUTION: The continuous billet rolling equipment has a heating furnace 1, a billet carrying line 2 connected to the entrance of the heating furnace 1, and a rolling machine line 3 connected to the outlet of the heating furnace 1, and the billet carrying line 2 and the rolling machine line 3 are out of alignment in the cross direction to the pass line each other. The equipment further has a billet welding device 4 connected to the opposite side of the rolling machine line in the heating furnace 1 and connecting a plurality of billets in one continuous state, the first roller table 6 for taking the billet heated in the heating furnace 1 out and putting it into the billet welding device 4, a transfer device 8, and the second roller table 7. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a billet continuous rolling facility. More specifically, the present invention relates to a facility for welding a large number of billets taken out from a heating furnace into a continuous one and continuously rolling the billet (steel slab), which is a raw material of a wire rod or a steel bar, efficiently.

[0002]

2. Description of the Related Art A conventional billet rolling facility will be described with reference to FIG. In the figure, 1 is a heating furnace, 2 is a billet carry-in line, 3 is a rough rolling mill, and a billet welding device 4 is arranged between the outlet of the heating furnace 1 and the inlet of the rough rolling mill 3.

[0003]

With the layout of the conventional rolling equipment, if the installation space required for the exit of the heating furnace 1 and the entrance of the rough rolling mill 3 in the existing factory cannot be secured, the billet welding device 4 may be additionally installed. There is a problem that you cannot do it. In addition, it is necessary to pass the heated billet through the welding device 4 regardless of whether the billet welding device 4 is used or not. In this case, the transport distance becomes long, and the billet temperature is lowered. In this case, it becomes difficult to perform the rolling in the subsequent step, so that in order to prevent this, it is necessary to separately provide a heating device for raising the billet temperature again.

In view of the above circumstances, the present invention has few restrictions on additional work in an existing factory, does not cause a temperature drop of the billet discharged from the heating furnace, improves productivity, and continuously billet-rolls without an extra heating device. The purpose is to provide equipment.

[0005]

The billet continuous rolling equipment according to claim 1 comprises a heating furnace, a billet carry-in line connected to the inlet of the heating furnace, and a rolling mill train connected to the outlet of the heating furnace. Which is a rolling facility in which the billet carry-in line and the rolling mill row are positioned offset from each other in a direction orthogonal to the pass line, and which is connected to the non-rolling mill row side in the heating furnace. , A billet welding device for connecting a plurality of billets in series, and a billet take-out inserting means for taking out the billet heated by the heating furnace and inserting it into the billet welding device. In the billet continuous rolling equipment according to claim 2, in the invention according to claim 2, the billet take-out and insertion means takes out a heated billet from a heating furnace and conveys it to a rear side of an entrance side of the billet welding device. A second roller table connected to the rear of the inlet of the billet welding device and feeding the billet to the billet welding device; and a transfer device for transferring the billet on the first roller table to the second roller table. It is characterized by

According to the invention of claim 1, since the billet welding device is not provided between the heating furnace and the rolling mill train but is installed on the side opposite to the rolling mill train, the heating furnace and rolling mill train are installed in the existing factory. There is no need to remove and re-install, and if there is space even on the non-rolling mill side of the heating furnace, the billet welding device can be incorporated into the rolling line with simple additional work. Further, the billet once taken out from the heating furnace and connected in series by the welding device is sent again to the rolling mill train through the heating furnace, so that the billet whose temperature has dropped during welding can be reheated. Therefore, the productivity is improved, and since it is not necessary to additionally provide a heating device, the equipment cost is reduced. According to the invention of claim 2, when the billet heated by the first roller table is taken out from the heating furnace and transferred to the second roller table by the transfer device, it can be sent to the billet welding device by the second roller table. In this way, a large number of billets can be efficiently fed to the billet welding device, so that a continuous billet can be efficiently produced.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a billet continuous rolling facility according to an embodiment of the present invention, FIG. 2 is an enlarged plan view of the billet welding device and billet take-out / insertion means of FIG. 1, and FIG. 3 is a first and second roller table and a transfer table. 4 is a front view of the transfer device, and FIG. 5 is a side view of the billet welding device.

In FIG. 1, reference numeral 1 denotes a heating furnace, and a billet carry-in line 2 is connected to an inlet 1a of the heating furnace 1 so that billets b1, b2, b3 ... With a constant length are carried in order. There is. Further, the inlet 1a of the heating furnace 1
An outlet 1b is provided on the opposite side of the
The rolling mill train 3 is connected to b. The billet carry-in line 2 and the rolling mill train 3 are arranged such that their pass lines are parallel to each other and the arrangement positions are displaced in a direction orthogonal to the pass lines. An insertion port 1d is provided on the opposite side of the heating furnace 1 from the outlet 1b, that is, on the side opposite to the rolling mill row, and an ejection port 1c is provided adjacent to the insertion port 1d.
The insertion opening 1d is on the same path line as the exit 1b, and the ejection opening 1c is located slightly closer to the entrance 1a side than the insertion opening 1d. A billet welding device 4 is connected to an insertion port 1d on the side opposite to the rolling mill row of the heating furnace 1, and a billet take-out inserting means is provided between the take-out port 1c and the billet welding device 4.

Next, the billet welding device 4 will be described with reference to FIG.
Will be explained. This billet welding device 4 is disclosed in Japanese Patent Application No. 10-3.
No. 41209 has been proposed, and the schematic configuration is as follows. Reference numeral 41 is a traveling rail installed along the pass line, on which the welding machine 40 travels. An opening / closing type pinch roll 42 is installed on the inlet side of the welding device 4, and a deburring 43 is installed on the outlet side thereof. The pinch roll 42 is a second
It continues to the exit side of the roller table 7, and the deburring device 43 continues to the insertion port 1d of the heating furnace 1.

The billets b1, b2, ..., Which have been fed through the pinch rolls 42, are fed to the outlet side, and the trailing end of the leading billet and the leading end of the trailing billet are at the welding start position S. It is clamped by 40 and welded while traveling until reaching the welding end position E. The welder 40 that has completed welding returns to the original welding start position S again, and enters a system for welding the next billet. By repeating such an operation, the billets on all the lines are welded one after another and sent to the heating furnace 1 again as a continuous billet B.

The welding machine 40 is mounted on a traveling carriage 45 that travels on a traveling rail 41, a shift carriage 47 that shifts on the traveling carriage 45 in a direction orthogonal to the pass line, and a shift carriage 47. It is composed of a welding machine 40 and roller table groups 4a to 4t.

The roller table 4a provided on the entrance side of the welding device is a fixed roller table fixed on the entrance side, and the roller table 4d is fixed to the traveling carriage 45 of the welding machine 40, and together with the traveling carriage 45. It is a moving roller table that moves. Two roller tables 4b and 4c between the fixed roller table 4a and the moving roller table 4d
Is a driven roller table that moves following the moving roller table 4d. The roller table 4i provided on the exit side of the welding device is a fixed roller table fixed on the exit side, and the roller table 4e is fixed to the traveling carriage 45 of the welding machine 40 and moves with the traveling carriage 45. Is. Three roller tables 4f, 4 between the fixed roller table 4i and the moving roller table 4e
Reference numerals g and 4h denote driven roller tables that move following the moving roller table 4e.

Since these roller tables can be pushed and pulled by the traveling carriage 45,
As shown in FIG. 5, when the welding machine 40 is at the welding start position S, the entrance-side roller table groups 4a to 4d contract,
With the roller table groups 4e to 4i on the delivery side expanded,
Supports the billet. In addition, the welding machine 40 moves the welding end position E
Roller table groups 4a to 4d on the entry side
Is expanded and the roller table groups 4e to 4i on the delivery side are contracted, and the billet is supported. Of course, while the welding machine 40 is running, the roller table groups 4a on both the input side and the output side are arranged.
4i will support the billet while expanding and contracting. For this reason, the running resistance of the billet can be reduced, and the sag of the billet can be reduced as much as possible, so that the ends of the billet can be reliably connected to each other by welding.

Next, the billet take-out / insertion means 5 will be described with reference to FIG. This billet take-out insertion means 5 is
It comprises a first roller table 6 and a second roller table 7, and a transfer device 8 arranged between them.
The first roller table 6 is connected to the outlet 1c shown in FIG. 1 and is arranged in parallel with the billet welding device 4, and its length matches the length of the welding device 4 and the length of one billet. Is almost equal to As shown in FIG. 3, the first roller table 6 includes a roller 61 for mounting a billet and feeding it, a motor 62 for driving the roller 61, and a table arranged between the adjacent rollers 61, 61. Roller unit 60 with 63
Are arranged in a straight line. In addition, heating furnace 1
To feed the billet from the first roller table 6 to
A roller table provided in the heating furnace 1 is used.

The second roller table 7 is composed of a roller unit 70 having the same structure as the first roller table 6. That is, the roller 71, the motor 72, and the table 73 are included. Then, it is connected to the inlet of the billet welding device 4, is arranged in parallel with the first roller table 6, and extends to the same position as the tip of the first roller table 6.

Next, the transfer device 8 will be described with reference to FIGS. A swing shaft 81 is arranged between the first roller table 6 and the second roller table 7. A plurality of arms 82 are attached to the swing shaft 81 at intervals in the axial direction. That is, the first roller table 6
A plurality of arms 82 in association with the cutout portions of the respective tables 63 of FIG. 1 and the cutout portions of the respective tables 73 of the second roller table 7.
Is provided and goes in and out of this notch. As shown in FIG. 4, a receiving member 83 for the billet B is attached to the upper end of each arm 82, and the receiving member 83 is kept parallel by the chain winding mechanism 84 regardless of the swing of the arm 82. It has become. Then, the swing shaft 81 has
A motor 85 for oscillating this and a speed reducer 86 are connected. As shown in FIG. 4, the arm 82 is tilted toward the first roller table 6 side, and the billet b1 sent on the roller 61 is scooped up from below to move the arm 82.
By tilting to the left in the figure, the billet b can be remounted on the roller 71 on the second roller table 7 side.

Next, the rolling preparatory work by the billet continuous rolling facility of this embodiment will be described with reference to FIG. The billets b1, b2, b3, ... On the carry-in line 2 are heated in order while entering the heating furnace 1 through the inlet 1a and being sent in the direction indicated by the arrow Y. The heated billet is sent out from the take-out port 1c and conveyed by the first roller table 6. The billet conveyed to the tip of the first roller table 6 is transferred to the second roller table 7 by the transfer device 8 and sent to the billet welding device 4 by the second roller table 7. By the billet welding device 4, the billets b1, b2, b3, ... Are welded at their end portions in sequence while running, to form a continuous long billet B. The billet B thus long-connected is again fed into the rolling mill train 3 through the heating furnace 1. The billet B sent to the rolling mill train 3 is sent to a medium rolling mill train and a finishing rolling mill train (not shown) to be finished into a final product.

According to the present embodiment, the billet welding device 4
Is not installed between the heating furnace 1 and the rolling mill train 3, but is installed on the side opposite to the rolling mill, so there is no need to remove the heating furnace or rolling mill train and re-install it in the existing factory. If rolled, the installation work can be done while operating normally. The billet welding apparatus 4 can be incorporated into the rolling line by a simple additional work as long as there is a space even on the side opposite to the rolling mill of the heating furnace 1. Further, since the billet B once taken out from the heating furnace 1 and continuously connected by the welding device 4 is fed again into the rolling mill train 3 through the inside of the heating furnace 1, the temperature of the billet B does not decrease.
Therefore, since reheating is not required, productivity is improved, and an additional heating device is not required, which leads to a reduction in equipment cost.

[0019]

According to the first aspect of the present invention, the billet welding apparatus can be incorporated into the rolling line by a simple additional work as long as there is a space even on the non-rolling mill side of the heating furnace. Further, since the billet whose temperature has dropped can be easily reheated, the productivity is improved and the equipment cost is reduced. According to the invention of claim 2, since a large number of billets can be efficiently fed to the billet welding apparatus, a continuous billet can be efficiently produced.

[Brief description of drawings]

FIG. 1 is a plan view of a billet continuous rolling facility according to an embodiment of the present invention.

FIG. 2 is an enlarged plan view of the billet welding device and billet take-out / insertion means of FIG.

FIG. 3 is a plan view of first and second roller tables and a transfer device.

FIG. 4 is a front view of the transfer device.

FIG. 5 is a side view of the billet welding device.

FIG. 6 is a plan view of a conventional billet continuous rolling facility.

[Explanation of symbols]

1 heating furnace 2 Billet carry-in line Row of 3 rolling mills 4 welding equipment 5 Billet ejection insertion means 6 First roller table 7 Second roller table 8 Transfer device 60 roller unit 70 Roller unit 81 swing axis 82 Arm

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Michio Yoshida             Sumitomo Heavy Industries, No. 5, Soukai-cho, Niihama-shi, Ehime Prefecture             Mechanical Industry Co., Ltd. Niihama Works (72) Inventor Itaro Odagiri             3-9-1, Saiwaicho, Kawaguchi City, Saitama Prefecture             Inside the mountain factory F-term (reference) 4E002 AD01 BD05 BD08 CB08                 4E087 BA14 FA29

Claims (2)

[Claims] 1. A heating furnace, a billet carry-in line connected to an inlet of the heating furnace, and a rolling mill train connected to an outlet of the heating furnace. The billet carry-in line and the rolling mill train. Are rolling equipments that are positioned in a direction orthogonal to each other with respect to the pass line, and are connected to the non-rolling mill row side in the heating furnace, and a billet welding device that connects a plurality of billets in series. And a billet take-out inserting means for taking out the billet heated in the heating furnace and inserting it into the billet welding apparatus. 2. The billet unloading and inserting means is connected to a first roller table for unloading a heated billet from a heating furnace and transporting it to the rear of the entrance side of the billet welding device, and behind the entrance of the billet welding device. The billet continuous according to claim 2, comprising a second roller table for feeding a billet to the billet welding device, and a transfer device for transferring the billet on the first roller table to the second roller table. Rolling equipment.