JP2002263720A - Waiting/delivering apparatus of equipment for continuously rolling metallic material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To propose a waiting/delivering apparatus of equipment for continuously rolling a metallic material. SOLUTION: In the equipment for continuously rolling the metallic material in which a rolling mill train on the upstream side, a movable joining device, which is movable back and forth, having a clamp device for making a preceding material and the succeeding material into a continuous metallic base stock by joining them and a rolling mill train on the downstream side are installed successively in series, a receiving line and a waiting line which are installed in parallel to the rolling pass-line are arranged in an adjacent relation between the rolling mill train on the upstream side and the movable joining device. The receiving line has a switching machine for switching the destination of the material, a stopper for stopping the material by butting the tip of the material against it and a 1st shift mechanism for moving the material in parallel to the waiting line and the waiting line has a clamp device having a function for clamping the material and thrusting the tip to the downstream side by a specified length and a 2nd shift mechanism for shifting the material in parallel to the rolling pass-line.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of rolling a shaped material having a finite length, such as a billet, into a metal coarse material having a predetermined size, and then, in a rolling line, with a preceding metal rough material in a rolling line. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous apparatus for joining metal and continuously rolling metal material, and more particularly to a device for holding a metal rough material before joining and sending it to a rolling line at the time of joining. In the present invention, the term “metal coarse material” means a so-called intermediate material (rolled material) having a predetermined size obtained by rolling a metal element into a rough shape or the like.

[0002]

2. Description of the Related Art Conventionally, when manufacturing a long metal material having a predetermined cross-sectional area and shape, such as a wire, a rod, or a strip, from a metal material such as a bloom or a billet, the metal material is subjected to hot working. Rolling is performed. What is hot rolling?
This is a method in which a metal material heated to a high temperature or a high-temperature metal material obtained by continuous casting is rolled to obtain a metal material having desired dimensions and shape.

By the way, in such hot rolling, a metal material having a finite length is sequentially rolled one by one.
In so-called batch rolling, a time interval occurs between the rolling of one metal raw material and the rolling of the next metal raw material. There was a case where it had to stand on the floor and wait. For this reason, there has been a problem that the temperature of the metal base material and the metal rough material is inevitably reduced, and when they are rolled, reheating is required.

To solve such a problem, for example, Japanese Patent Laid-Open No.
Japanese Patent No. -5803 discloses a so-called continuous rolling method. The technique described in Japanese Patent Application Laid-Open No. 10-5803 discloses a process of sequentially rolling a plurality of materials (formed materials) in a first rolling mill row, and moving a traveling welding machine in synchronization with the movement of the materials. Meanwhile, a step of connecting the rear end of the preceding material and the front end of the following material by flash butt welding to form a continuous material, a grinding process of removing burrs at a weld of the continuous material, and further downstream of the continuous material. And a step of continuously rolling in a second rolling mill row arranged in the rolling mill.

[0005]

In the technique described in Japanese Patent Application Laid-Open No. 10-5803, as described above, the traveling type welding machine is moved while being synchronized with the preceding movement of the material.
A step of connecting the rear end of the preceding material and the front end of the following material by flash butt welding is an essential requirement.
However, when the inventor repeated various trials, it was found that such a joining method had a serious problem.

That is, the traveling range of the traveling type welding machine is limited, and it is necessary to complete welding under optimum conditions during traveling during this period. For this purpose, when the preceding material enters the traveling range, the traveling welding machine must grasp the leading end of the following material as soon as possible and start traveling following the preceding material. In addition, the leading end of the succeeding material needs to be promptly positioned to a position optimal for welding in the traveling welding machine.

For this purpose, the trailing material is made to stand by before the trailing end of the preceding material enters the above-mentioned traveling range, and in a short time after the trailing material is transferred from the standby position into the traveling welding machine. It must be delivered in a way that allows accurate positioning. However, the rolling equipment described in the above-mentioned Japanese Patent Application Laid-Open No. 10-5803 does not have such a stand-by device, and therefore, although the rear end of the preceding material is in a position suitable for joining, There is a possibility that the material in the line cannot keep up with this, or conversely, the material in the following runs before the trailing edge of the preceding material reaches the joining position and collides with the preceding material, which may cause serious trouble. Was.

The present invention advantageously solves the above-mentioned problems of the prior art, and temporarily suspends a subsequent metal rough material (material to be joined) suitable for continuous rolling equipment for metal materials, and temporarily prepares the material in the apparatus. An object of the present invention is to propose a standby / delivery device in a continuous rolling equipment for a metal material, which can be delivered to a joining device so that positioning can be performed in a minimum time.

[0009]

Means for Solving the Problems The present inventor has conducted intensive studies in order to achieve the above-mentioned object, and as a result, the material (the material to be joined) that follows the rear end of the preceding material (the material to be joined) with good timing. In order to follow and weld the tip of (1), it has been conceived that the following material must be temporarily put on standby.

The present invention has been completed based on further consideration based on the above-mentioned idea. That is, the gist of the present invention is as follows. (1) An upstream rolling mill row which successively rolls a metal raw material into a metal coarse material, and a rear end of a preceding metal coarse material having gripping means and a front end of a following metal coarse material are joined and continuously joined. Metal rough material,
A reciprocating movable joining device, and a downstream rolling mill row that continuously rolls the continuous metal rough material to obtain a metal finishing material are arranged in a continuous rolling equipment for metal materials sequentially provided in series, A standby / delivery device for performing standby / delivery of a metal rough material to be supplied to the mobile joining device, wherein the standby / delivery device includes a rolling path between the upstream rolling mill row and the mobile joining device. A receiving line and a standby line are provided adjacent to the rolling pass line from a side far from the rolling pass line, and the receiving line includes an upstream rolling mill on an outlet side of the upstream rolling mill row. A switching machine that switches the destination of the metal coarse material rolled in a row to one of a rolling pass line and a receiving line, and abutting the tip of the metal coarse material switched to the receiving line on the downstream side of the receiving line. Strike to stop And a first shift mechanism that translates the metal material in the receiving line in parallel to the standby line, and the standby line holds the metal material in the standby line. A gripping device having a function of protruding the distal end thereof to a predetermined length on the downstream side, and a second shift mechanism for translating the coarse metal in the standby line into the rolling pass line. Standby / delivery device in continuous rolling equipment for rolling metal materials. (2) The standby / delivery device according to (1), wherein the first shift mechanism is a pusher. (3) The second shift mechanism is a claw-shaped body that is provided so as to be able to be buried below the standby line, and that can move the metal coarse material in the standby line toward the rolling pass line. The standby / delivery device according to (1) or (2). (4) The standby / delivery device according to any one of (1) to (3), wherein a partition wall that can move upward is provided between the receiving line and the standby line. (5) An upwardly movable partition wall is provided between the standby line and the rolling pass line (1).
The standby / delivery device according to any one of (1) to (4). (6) The receiving line is provided with at least one pair of pinch rolls for moving the metal rough material switched by the switching machine in a downstream direction (1).
The standby / delivery device according to any one of (1) to (5).

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below. FIG. 2 shows an example of a continuous rolling equipment for metal materials suitable for carrying out the method of the present invention. In the present invention, a metal blank is rolled into a metal finish (product) using a rolling facility in which a plurality of rolling mill rows are arranged in series. A metal blank (billet) 1 directly sent from a continuous casting machine (not shown) or heated by a heating furnace 2 is roughly rolled in a plurality of rolling mill rows at an upstream rolling mill row (rough rolling mill row) 3. The metal rough material 5 is obtained. The metal blank 5 is then rolled by a downstream rolling mill row (intermediate rolling mill row) 13 and then, if necessary, further rolled by a further downstream rolling mill row (finish rolling mill row) 14 to finish the metal finishing of the product. Material.

In the present invention, a mobile joining device 12 is disposed between the upstream rolling mill train 3 and the downstream rolling mill train 13. This mobile joining device 12 joins the leading end of the following metal rough material 10 to the rear end of the preceding metal rough material 11, and the downstream rolling mill train
13. If necessary, rolling is performed continuously in the downstream rolling mill row 14. In addition, the tip of the metal rough materials 10 and 11 to be joined,
It is preferable that the rear end is cut by the cutting machine 4 when it comes out of the upstream rolling mill row 3 so that the end face is adjusted to a shape suitable for joining. As the cutting machine 4, a crop shear or a traveling sawing machine can be preferably used.

[0013] The rear end of the preceding metal rough 11 and the subsequent metal rough 10
The mobile joining device 12 for joining the leading ends is disposed so as to be able to reciprocate between the upstream rolling mill row 3 and the downstream rolling mill row 13. For this reason, it is preferable that the mobile joining device 12 be a cart. Moving means (not shown) of the mobile joining device 12
Any method, such as a self-propelled system in which wheels or pinions are driven by a motor loaded on the movable joining device 12 (in this case, a rack and pinion system), or a passive system using an externally provided cylinder, may be used. Good.

The upstream rolling mill train 3 and the downstream rolling mill train 3
The reciprocation between 13 does not necessarily mean only a linear motion.For example, at the time of joining, the material moves along the transport direction of the preceding metal coarse material and the following metal coarse material in the rolling line, but the return is It may be one that retreats and moves out of the rolling line. The joining in the present invention is not particularly limited as long as a strong joining can be obtained in a short time, but flash butt welding is most preferable as a joining method meeting this purpose.

When the above-mentioned mobile joining device 12 is running on a rolling line, the support rolls 91 constituting the roller table 9 for transporting and supporting the metal rough material do not interfere with the mobile joining device 12. It is preferable to be able to sequentially retreat to the position. The above-described mobile joining device 12 includes a joining unit 16
In addition, it has a gripping device 15 for gripping the subsequent metal rough material 10.

The most characteristic feature of the present invention is that when the subsequent metal rough material 10 is delivered to the gripping device 15 of the mobile bonding device 12, the rear end of the preceding metal rough material 11 Device 12
The present invention is to provide a standby / delivery device 20 that feeds out such that the leading end of the subsequent metal rough material 10 can always be located at a predetermined position in the movable joining device 12 when it enters the moving range. As shown in FIG. 1, the standby / delivery device 20 is provided between the upstream rolling mill line 3 and the mobile joining device 12 in parallel with the rolling pass line 19 and a receiving line 21 from a side far from the rolling pass line 19. And a standby line 22 are provided adjacent to each other, and the metal rough material 10 is supplied to the mobile bonding apparatus 12.

The receiving line 21 is provided with a switching device 32, a stopper 30, and a first shift mechanism 33. The metal blank 10 rolled in the upstream rolling mill row 3 flows in the rolling pass line 19, and its destination is
The rolling pass line 19 is switched to the receiving line 21. In the case of so-called batch rolling, in which the metal rough 10 is rolled one by one, the metal rough 10 is directly
It is sent into the rolling pass line 19. On the other hand, in the case where the metal coarse material is joined and continuously rolled, it is sent to the receiving line 21. At this time, it is preferable to provide at least a pair of pinch rolls 8 so that the leading end of the fed metal rough material 10 surely hits the stopper 30 and stops. FIG.
Shows a state in which the metal coarse material 10 is stopped in the receiving line 21.

The metal blank 10 stopped in the receiving line 21
Is then moved by the first shift mechanism 33 substantially parallel to the adjacent standby line 22. First shift mechanism
33 is preferably a pusher provided on the side of the receiving line 21 opposite to the standby line 22. FIGS. 4 and 5 show a receiving line for receiving the metal coarse material 10 by using a pusher driven by a cylinder as the first shift mechanism 33.
This shows a situation where the vehicle moves from 21 to the standby line 22. FIG. 4 is a view taken in the direction of arrows AA in FIG.
FIG. 4 is a view on arrow B-B in FIG. 3.

It is preferable that a partition wall 23 movable upward is provided between the receiving line and the standby line. Further, it is more preferable to provide a ceiling 25 on the partition wall 23. By providing the ceiling, the heat radiation of the metal rough material (the material to be joined) can be minimized. Figure 4 shows the ceiling 25
An example is shown in which a partition wall is provided. In the range in which the holding device 31 provided on the standby line 22 described later moves,
In order not to hinder the movement, as shown in FIG.
It is preferable to use a partition wall having a configuration (25a) lacking a part of the ceiling.

A holding device 31 and a second shift mechanism 34 are provided on the standby line. The metal coarse material 10 that has moved from the receiving line to the standby line is gripped by the gripping device 31 and protruded forward by a predetermined length (the position indicated by the dotted line in FIG. 1). The holding device 31 is preferably a clamp device shown in FIG. The clamp device is configured such that the clamp can be opened and closed, moved up and down, and advanced and retracted in the longitudinal direction of the standby line by a driving device (not shown). The metal coarse material protruded forward by a predetermined length by the gripping device 31 is released from the gripping device 31, then delivered to the mobile joining device 12, and further moved to the rolling pass line by the second shift mechanism.

The movable joining device 12 that has moved to the retreat limit of the rolling pass line has a metal rough material 10 to be joined.
There is provided a gripping device 15 for gripping the leading end and taking it into the movable joining device 12. This gripping device 15 is shown in FIG.
As shown in (1), it has gripping means 15a and moving means 15b. The gripping means 15a grips a predetermined position in the vicinity of the tip of the subsequent metal rough material 10, and the moving means 15b fixes the tip of the subsequent metal rough material 10 to a predetermined position suitable for joining in the movable joining device 12. Can be moved to and held at the position. In addition, gripping means
The moving means 15a and the moving means 15b are configured to be able to perform gripping, traversing, ascending and descending, and forward / backward movements by driving means (not shown).

First, the holding means 15a of the holding device 15 is
As shown in (a), the metal material 10 is moved on the standby line 22 above the waiting metal rough material 10. Then, as shown in FIG. 7 (b), the gripping means 15a of the gripping device 15 descends to
, And then rises again, and then traverses onto the rolling pass line 19. During this time, the rear part of the metal blank 10 to be joined also needs to be translated in the rolling pass line 19. Therefore, in the present invention, a second shift mechanism 34 is provided in the standby line 22. The second shift mechanism 34 is provided below the standby line 22 so as to be buried under the standby line 22.
It is preferable to use a claw-like body that allows the metal rough material in the inside to move toward the rolling pass line. FIG. 8 shows the installation state of the nail-like bodies. As shown in FIG. 8A, the claw-shaped body is usually buried and installed below the standby line 22. And metal rough
As shown in FIG. 8B, when the 10 is taken into the movable joining apparatus, the claw-like body is raised and the rear part of the metal blank 10 is moved in parallel into the rolling pass line 19.

It is preferable to provide a partition wall 23 which can be raised between the standby line 22 and the rolling pass line 19.
It is preferable that the partition wall 23 be raised when the metal coarse material 10 is moved in parallel. Further, a structure in which a ceiling 25 is provided also on the partition wall 23,
It is preferable to minimize the heat radiation of the materials to be joined. By installing the standby line having the above configuration, the metal coarse material (material to be joined) rolled by the upstream rolling mill row 3
It is possible to wait while minimizing heat radiation until the rear end of the preceding metal rough material (material to be welded) is at a position suitable for welding, and it is also easy to position the standby, and the metal roughing to the mobile joining device is easy. It is possible to make the delivery position of the material (the material to be joined) constant. Thereby, the joining position can be stably set to an appropriate position, the quality of the joining portion can be improved, and trouble during continuous rolling can be reduced.

As the metal base material, blooms, billets, and the like, which are used as raw materials for processing wires, rods, molds, and the like, are suitable. The metal material produced by continuous rolling using the apparatus of the present invention is a wire, a rod, a mold, or the like, and particularly preferably a wire or a rod. Steel is most commonly used as a metal, but is not particularly limited to this. Hot rolling of a wire or a bar made of a copper alloy or an aluminum alloy may be used.

[0025]

As described above in detail, according to the present invention, in continuous rolling of a metal material, it is possible to wait for a material to be joined before joining, and achieve stable joining. It has significant industrial effects, such as improved yield and improved production efficiency.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view showing an example of a standby / delivery device of the present invention.

FIG. 2 is a schematic explanatory view showing an example of an arrangement of a standby / delivery device of the present invention in a continuous rolling facility.

FIG. 3 is a schematic diagram showing an example of an operation state of a receiving line in the standby / delivery device of the present invention.

FIG. 4 is a schematic diagram showing an example of an operation state of a receiving line in the standby / delivery device of the present invention.

FIG. 5 is a schematic diagram showing an example of an operation state of a receiving line in the standby / delivery device of the present invention.

FIG. 6 is a schematic diagram showing an example of an operation state of a standby line in the standby / delivery device of the present invention.

FIG. 7 is a schematic diagram showing an example of an operation state of the mobile joining device.

FIG. 8 is a schematic diagram showing an example of an operation state of a standby line in the standby / delivery device of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 metal shaped material 2 simple heating furnace 3 upstream rolling mill row (rough rolling mill row) 4 cutting machine 5 metal rough material 6 waiting metal rough material 8 pinch roll 9 roller table 91 support roll 10 metal rough to follow Material (metal rough) 11 Leading metal rough 12 Mobile joining device 13 Downstream rolling mill row (intermediate rolling mill row) 14 Downstream rolling mill row (finishing rolling mill row) 15 Gripping device 15a Gripping means 15b Moving means 16 Joining means 16a Joining method of preceding metal coarse material 16b Joining method of succeeding metal coarse material 19 Rolling line 20 Standby / delivery device 21 Receiving line 22 Standby line 23 Partition wall 24 Partition wall 25 Ceiling 25a Ceiling 30 Stopper 31 Gripping device 32 Switching machine 33 First shift mechanism 34 Second shift mechanism

Claims (6)

[Claims] 1. An upstream rolling mill row which successively rolls a metal blank to produce a metal rough, and joins a rear end of a preceding metal rough having a gripping means and a front end of a subsequent metal rough. And a continuous metal coarse material, a reciprocally movable mobile joining device, and a downstream rolling mill row that continuously rolls the continuous metal coarse material and obtains a metal finishing material, a metal material that is sequentially provided in series. A standby / delivery device which is disposed in a continuous rolling facility and performs standby / delivery of the metal rough material to be supplied to the mobile joining device, wherein the standby / delivery device includes the upstream rolling mill row and the movable type. Provided in parallel with the rolling pass line between the joining device,
A receiving line and a standby line are provided adjacent to the rolling pass line from a side farther from the rolling pass line, and the receiving line includes a metal coarse material rolled by the upstream rolling mill row at an outlet side of the upstream rolling mill row. A switching machine that switches the destination of the metal pass to a rolling pass line or a receiving line, a stopper that abuts the tip of the metal coarse material switched to the receiving line on the downstream side of the receiving line, and stops the receiving line. A first shift mechanism for moving the metal rough material in the parallel to the standby line, and holding the metal rough material in the standby line on the standby line, and moving the tip thereof downstream. And a second shift mechanism for parallelly moving the metal coarse material in the standby line into the rolling pass line, and continuously rolling the metal material. Setting Wait-delivery device in. 2. The standby / delivery device according to claim 1, wherein the first shift mechanism is a pusher. 3. The method according to claim 2, wherein the second shift mechanism is a claw-shaped member that is provided below the standby line so as to be buried under the standby line, and that enables the metal coarse material in the standby line to move toward the rolling pass line. The standby / delivery device in the continuous rolling equipment for metal materials according to claim 1 or 2, wherein: 4. The standby / delivery in the continuous rolling equipment for metal materials according to claim 1, wherein a partition wall movable upward is provided between the receiving line and the standby line. apparatus. 5. The standby in a continuous rolling equipment for metal material according to claim 1, wherein a partition wall movable upward is provided between the standby line and the rolling pass line.・ Sending device. 6. The receiving line according to claim 1, wherein at least one pair of pinch rolls for moving the metal rough material switched by the switching machine in a downstream direction are provided. A standby / delivery device in a continuous rolling facility for metal materials according to the above aspect.