JP3763326B2 - Running joint device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a running joining apparatus that joins a trailing end of a preceding rolled material and a leading end of a succeeding rolled material while traveling with the rolled material in a hot rolling facility.
[0002]
[Prior art]
In a conventional hot rolling facility (hot strip mill), bar materials rolled by a roughing mill are separately supplied to a finishing mill to obtain a strip material having a desired plate thickness. However, with such means, the entire rolled material cannot be uniformly rolled, and the end portions (front end portion and rear end portion) of the rolled material are likely to be defective. Therefore, there is a problem that it is difficult to increase the rolling speed.
[0003]
In order to solve such a problem, a joining apparatus for joining the rear end of the preceding rolled material and the front end of the next rolled material in order to continuously supply the rolled material to the finishing mill has been proposed ( For example, JP-A-62-252603, JP-A-63-93408, JP-B-5-139).
[0004]
However, in the conventional joining apparatus described above, (1) it is necessary to drive a large number of joints in a short time in order to ensure sufficient joining strength over the entire width of the rolled material, and automation (mechanization) is difficult. And the joint part cannot be rolled uniformly. (2) Since it takes time to weld a wide rolled material, the entire equipment tends to be long, and unevenness is likely to occur in the joint part, and the joint part can be uniformly rolled. Difficult, (3) it is difficult to bend the bar material, and it is not possible to secure sufficient joining time, and it is not possible to secure sufficient joining strength over the entire width of the rolled material even if the rear end and the leading end are simply pressed. (4) If the overlapping part is not compressed to almost the same thickness as the rolled material, the overlapping part will become thick and a step will be formed, so that it will not be possible to smoothly supply the rolling material to the finishing mill placed downstream. (5) Reduction Power increases , There is a problem such that the entire apparatus becomes large.
[0005]
Therefore, the inventors of the present invention join the rear end of the preceding rolled material and the front end of the subsequent rolled material while traveling together with the rolled material with a relatively small facility in order to solve the above-described problems. It is possible to join with sufficient joining strength over the entire width of the rolled material in a short time, and to continuously supply the rolled material with less unevenness in the joined portion to the finishing mill disposed downstream. An inter-junction device was created and applied (for example, JP-A-7-323305, JP-A-8-24905, JP-A-8-71855, etc.).
[0006]
[Problems to be solved by the invention]
As shown in FIG. 2, the conventional running joint apparatus described above has a carriage 12 that travels in the rolling direction and a rear end portion of the preceding rolled material 1 that is mounted on the carriage and can be moved up and down horizontally. The end clamping device 14, the tip clamping device 16 that is mounted on the carriage and horizontally holds the tip of the trailing rolled material 2, the lower surface of the leading end of the preceding rolled material, and the upper surface of the leading end of the trailing rolled material are simultaneously cut. A processing device 18 for processing, a reduction holding device 20 for holding the processed surface in a reduced state, a pressure welding device 22 for press-contacting the processed surfaces of the preceding rolled material 1 and the subsequent rolled material 2, and a rolling device for rolling the rolled material The entrance side inclination guide 25 which guides from the rolling height B to the front end clamping device 16 and the exit side inclination guide 24 which guides from the rear end clamping device 14 to the rolling height B are provided.
[0007]
However, in the conventional running joint device described above, (1) the table roller group in the horizontal portion on the subsequent rolled material side becomes longer, and as a result, the overall length of the traveling carriage becomes longer. It takes time to transport the material to the traveling carriage and to set and join the overlap amount, and (3) the radius of curvature of the bent portion is reduced, and the plate tends to be bent (compositional deformation). It was.
[0008]
The present invention has been made to solve such problems. That is, the present invention is to provide a running joint apparatus that can shorten the overall length of the traveling carriage, thereby stably realizing reduction flame pressure welding and minimizing bending flaws of the plate. .
[0009]
[Means for Solving the Problems]
According to the present invention, a cart that travels in the rolling direction, a rear end clamping device that can be moved up and down by horizontally holding a rear end portion of a preceding rolled material that is mounted on the cart, and after being mounted on the cart. A front end clamping device that horizontally holds the front end portion of the rolled material, a processing device that simultaneously cuts the rear end lower surface of the preceding rolled material and the upper end surface of the subsequent rolled material, and maintains the processed surface in a reduced state. A reduction holding device, a pressure welding device that presses and overlaps the processed surfaces of the preceding rolled material and the subsequent rolled material, an entry side inclined guide that guides the rolled material from the rolling height B of the rolling device to the tip clamping device, An exit-side inclined guide that guides from the rear end clamping device to the rolling height B, and the inlet-side inclined guide includes an inclination guide position L that guides the rolled material from the rolling height B of the rolling device to the front end clamping device; , Horizontal support position H for supporting the subsequent rolled material horizontally And it is configured between swingably, inter-running joining device is provided, characterized in that.
[0010]
According to a preferred embodiment of the present invention, the entry-side inclined guide includes a roller conveyor attached so as to be swingable about an upper end roller, and a swing cylinder for swinging the roller conveyor.
[0011]
According to the configuration of the present invention described above, the entrance side inclination guide has an inclination guide position L for guiding the rolled material from the rolling height B of the rolling device to the tip clamping device, and a horizontal support position for horizontally supporting the subsequent rolled material. Since it is configured to be swingable with respect to H, it is possible to maintain the parallel state (horizontal state) by horizontally supporting the subsequent rolled material together with the horizontal roller conveyor of the tip clamp device at the horizontal support position H. It is possible to shorten the horizontal roller conveyor of the tip clamping device and shorten the overall length of the traveling carriage. Further, this makes it possible to stably realize the reduction flame pressure welding and to suppress the bending flaw of the plate to the minimum.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the common part in each figure, and the overlapping description is abbreviate | omitted.
FIG. 1 is an overall configuration diagram of a running joint device 10 according to the present invention. The rolling material joining device 10 includes a carriage 12 that travels in the rolling direction, a rear end clamping device 14 that is attached on the carriage 12 and that can move up and down by horizontally holding the rear end portion of the preceding rolling material 1, and the carriage 12. And a tip clamping device 16 that horizontally holds the tip of the subsequent rolled material 2 and a process of simultaneously cutting the rear end lower surface of the preceding rolled material 1 and the upper end of the subsequent rolled material 2 to be flush with each other at the same time. An apparatus 18, a reduction holding device 20 that holds the processed surface in a reduced state, and a pressure contact device 22 that presses the processed surfaces of the preceding rolled material 1 and the subsequent rolled material 2 on top of each other are provided.
[0013]
In this embodiment, the processing device 18 has a cutter 19a, and cuts the lower surface of the rear end portion of the preceding rolled material 1 and the upper surface of the front end portion of the subsequent rolled material 2 at the same time.
Further, the reduction holding device 20 contains a reducing radical such as a hydrogen radical or a CH ₂ O radical by burning a combustible gas such as COG (coke oven gas), LPG, or LNG with less oxygen than completely burning it. It is a reducing flame burner that forms a reduced state with a reducing flame, and keeps the machined surface in a reduced state during the cutting process by the processing device 18 and the pressure welding process by the pressure welding device 22, preventing its oxidation, and high bonding Strength can be secured.
[0014]
The carriage 12 has a plurality of wheels 13 that run on a rail 3 extending in the rolling direction by a driving device (not shown). In this figure, B is the rolling height of the rolling device, and a plurality of rollers 4 support the rolled material at the rolling height B and move it in the rolling direction. For example, a state in which existing rolling equipment is operated Thus, the running joint device of the present invention can be installed.
[0015]
The rear end clamping device 14 includes a horizontal roller conveyor 14a that horizontally supports the rear end portion of the preceding rolled material 1, and a clamp cylinder 14b that presses the rear end portion of the preceding rolled material 1 on the horizontal roller conveyor 14a downward. Consists of. Further, the front end clamping device 16 includes a horizontal roller conveyor 16a that horizontally supports the front end portion of the subsequent rolled material 2, and a clamp cylinder 16b that presses the front end portion of the subsequent rolled material 1 on the horizontal roller conveyor 16a downward. It consists of.
[0016]
With the above-described configuration, the rear end portion of the preceding rolled material 1 and the front end portion of the subsequent rolled material 2 are horizontally held by the rear end clamping device 14 and the front end clamping device 16, and the rear end of the preceding rolled material 1 is processed by the processing device 18. The lower surface of the end portion and the upper surface of the tip end portion of the subsequent rolled material 2 are simultaneously cut to be flush with each other, the processed surface is held in a reduced state by the reduction holding device 20, and the preceding rolled material 1 and the subsequent rolled material 2 are pressed by the pressure welding device 22. It is possible to press and weld the processed surfaces.
[0017]
The running joint apparatus 10 according to the present invention further swings the rolled materials 1 and 2 up and down to guide the rolling materials 1 and 2 from the rolling height B of the rolling apparatus to the front end clamping apparatus 16 and from the rear end clamping apparatus 14 to the rolling height B. It is provided with a movable exit side inclination guide 24 and an entry side inclination guide 25, and the existing rolling equipment can be operated as it is by moving the entrance side and exit side inclination guides 24, 25 to the “up position”. The trailing rolled material 2 is guided from the rolling height B to the leading end clamping device 16 and the preceding rolling material 1 is guided from the trailing end clamping device 14 to the rolling height B. be able to.
[0018]
Further, as shown in FIG. 1, the entry side inclination guide 25 is provided with an inclination guide position L for guiding the rolled material 1 or 2 from the rolling height B of the rolling device to the tip clamp device 16 and the subsequent rolled material 2 horizontally. It is configured to be able to swing between the horizontal support position H supported by That is, in this embodiment, the entry side inclination guide 25 is composed of a roller conveyor 25a attached so as to be able to swing around the roller at the upper end, and a swing cylinder 25b for swinging the roller conveyor 25a. The roller conveyor 25a can be positioned at the horizontal support position H or the inclined guide position L by expansion and contraction of the cylinder 25b (for example, a hydraulic cylinder).
[0019]
With this configuration, the roller conveyor 25a can be swung without protruding upward from the horizontal roller conveyor 16a of the front end clamping device 16, and the rolling material 1 or 2 is rolled at the rolling guide of the rolling device at the inclined guide position L. B can be smoothly guided to the front end clamping device 16 and at the horizontal support position H, the horizontal rolling conveyor 16a of the front end clamping device 16 and the subsequent rolling material 2 are supported horizontally and in a parallel state (horizontal state). ) Can be maintained, and the horizontal roller conveyor 16a of the tip clamp device can be shortened to shorten the overall length of the traveling carriage 12. Further, this makes it possible to stably realize the reduction flame pressure welding and to suppress the bending flaw of the plate to the minimum.
[0020]
In addition, this invention is not limited to embodiment mentioned above, Of course, it can change variously in the range which does not deviate from the summary of this invention.
[0021]
【The invention's effect】
As described above, according to the configuration of the present invention, at the horizontal support position H, the following rolling material can be horizontally supported and maintained in a parallel state (horizontal state) together with the horizontal roller conveyor of the front end clamp device. By shortening the horizontal roller conveyor of the apparatus, the overall length of the traveling carriage can be shortened. Further, this makes it possible to stably realize the reduction flame pressure welding and to suppress the bending flaw of the plate to the minimum.
[0022]
Therefore, the running joint device of the present invention can shorten the overall length of the running carriage, thereby realizing a reduction flame pressure welding stably and suppressing the bending flaw of the plate to the minimum. Have
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram of a running joint device according to the present invention.
FIG. 2 is an overall configuration diagram of a conventional running joint apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Lead rolling material 2 Subsequent rolling material 3 Rail 4 Roller 10 Running joint apparatus 12 Carriage 13 Wheel 14 Rear end clamp apparatus 14a Horizontal roller conveyor 14b Clamp cylinder 16 Front end clamp apparatus 16a Horizontal roller conveyor 16b Clamp cylinder 18 Processing apparatus 19a Cutter 20 Reduction holding device 22 Pressure contact device 24 Outlet side inclination guide 25 Inlet side inclination guide 25a Roller conveyor 25b Oscillating cylinder H Horizontal support position L Inclination guide position B Rolling height

Claims (2)

A cart that travels in the rolling direction, a rear end clamping device that can be moved up and down by horizontally holding a rear end portion of a preceding rolled material attached on the cart, and a front end portion of a subsequent rolled material that is attached on the cart A front end clamping device that horizontally clamps, a processing device that simultaneously cuts the rear end lower surface of the preceding rolled material and the upper end surface of the subsequent rolled material, and a reduction holding device that holds the processed surface in a reduced state, A pressure welding device that presses the processed surfaces of the preceding rolled material and the following rolled material on top of each other, an entry side inclined guide that guides the rolled material from the rolling height B of the rolling device to the front end clamping device, and rolling from the rear end clamping device An exit-side inclined guide that guides the rolled material to a height B, and the inlet-side inclined guide includes an inclined guide position L that guides the rolled material from the rolling height B of the rolling device to the tip clamping device, and a subsequent rolled material. Can swing between horizontal support position H that supports horizontally Is configured, an inter-running junction and wherein the. 2. The running according to claim 1, wherein the entrance-side inclined guide includes a roller conveyor that is swingably mounted around an upper end roller, and a swing cylinder that swings the roller conveyor. Inter bonding device.

Images