JPH10166007A - Flying joining device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flying joining device for promoting deformation with the change of the pass direction by its dead weight and for smoothly guiding a rolled stock onto a truck. SOLUTION: This flying joining device is provided with the truck 1 which is traveled in the rolling direction, rear end clamping device 3 which is mounted on the truck 1, with which the rear end part of a preceding rolled stock 2 is horizontally clamped and which is vertically movable, tip clamping device 5 which is mounted on the truck 1 and with which the tip part of the succeeding rolled stock 4 is horizontally clamped, machining device 6 for cutting the underside in the rear end part of the preceding rolled stock 2 and the upside in the tip part of the succeeding rolled stock 4, reduction holding device 7 for holding those machined surfaces in the reduced state, press-contacting device 8 with which the machined surfaces of the preceding rolled stock 2 and succeeding rolled stock 4 are overlapped, compressed into the approximately same thickness and joined and pass switching device for guiding the rolled stocks 2, 4 onto the truck 1. The truck 1 is provided so as tohorizontally traveled below (underground) the horizontal pass line 10 on which the rolled stocks 2, 4 are horizontally transported.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a running joint for joining a rear end of a preceding rolled material and a front end of a subsequent rolled material while traveling with the rolled material in a hot rolling facility.

[0002]

2. Description of the Related Art In a conventional hot rolling mill (hot strip mill), bar materials rolled by a rough rolling mill are separately supplied to a finishing mill to obtain a strip material having a desired thickness. . However, such a method cannot uniformly roll the entire rolled material, easily causing defects at the ends (front and rear ends) of the rolled material, lowering the yield of the rolled material, and reducing the occurrence of bite / tail loss. Therefore, there was a problem that it was difficult to increase the rolling speed.

In order to solve such a problem, a rolled material joining apparatus as shown in FIG. 3 (Japanese Patent Laid-Open No. 7-323306) has been proposed. The rolled material joining apparatus shown in FIG. 1 is a rear end clamp device which can vertically move a carriage 1 running in a rolling direction and a rear end of a preceding rolled material 2 mounted on the carriage 1 and horizontally held. 3, a tip clamping device 5 for horizontally holding the leading end of a rolled material 4 mounted on the trolley 1 and horizontally, a lower surface of a rear end portion of the preceding rolled material 2 and a trailing rolled material 4
Processing device 6 for cutting the upper surface of the front end portion, reduction holding device 7 for holding the processed surface in a reduced state, and preceding rolled material 2
And a pressure welding device 8 for superimposing the processing surfaces of the succeeding rolled material 4 and compressing and joining them to substantially the same thickness as the rolled material. With this joining device, the rear end of the preceding rolled material 2 and the front end of the succeeding rolled material 4 can be joined while traveling with the rolled materials 2, 4. It can be joined with high joining strength, the joint can be processed almost uniformly with little unevenness of the joint,
The rolled materials 2 and 4 can be continuously supplied to the finishing mill. In the following, a joining device that joins the rolled materials 2 and 4 while traveling is referred to as a “running joining device”.

[0004]

In the traveling joining apparatus as described above, the bogie 1 is provided above a horizontal pass line 10 through which the rolled materials 2 and 4 are conveyed horizontally. It was necessary to guide the rolled materials 2 and 4 (pass direction change). That is, the rolled materials 2 and 4 must be actively lifted from the horizontal pass line 10 by the inclined guides 13 and 14 and the like. For this reason, running resistance in which the own weight is added to the bending deformation resistance is generated in the rolled materials 2 and 4, and running until the leading end of the succeeding rolled material 4 reaches the carriage 1 becomes unstable. There is a problem that the processing accuracy becomes poor and the subsequent pressure welding becomes insufficient.

The present invention has been made to solve the above-mentioned problems. In other words, it is an object of the present invention to provide a traveling joint device that can assist the deformation of the rolled material due to the change in the path direction by its own weight and can smoothly guide the rolled material to the bogie.

[0006]

According to the present invention, a truck running in the rolling direction and a rear end clamp mounted on the truck and capable of vertically moving the rear end of the preceding rolled material horizontally. Device, a tip clamping device mounted on the trolley and horizontally holding the leading end of the succeeding rolled material, and the lower end of the trailing end of the preceding rolled material and the upper end of the leading end of the succeeding rolled material are flush-cut. A processing device to perform, a reduction holding device that holds the processed surface in a reduced state, a pressing device that overlaps the processed surfaces of the preceding rolled material and the subsequent rolled material and compresses and joins the rolled material to substantially the same thickness, A path switching device for guiding the rolled material to the cart,
Wherein the bogie is provided so as to travel horizontally below a horizontal pass line for horizontally transporting the rolled material.

[0007] In the above-described traveling joining apparatus of the present invention, the bogie is provided below (preferably underground) below an existing rolling line (horizontal pass line). By configuring the running joining device in this way, gravity (self-weight of the rolled material) can be used when guiding the rolled material from the existing rolling line to the bogie. That is, the rolled material can be smoothly guided to the bogie simply by switching the pass line. Therefore, running resistance generated in the rolled material can be reduced, stable and accurate cutting can be performed, and sufficient pressure welding can be performed. In addition, when the running joining apparatus is installed on an existing rolling line, there is no possibility that an object falls on the equipment or the rolled material, and the installation work can be performed while the existing rolling line is operating.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an overall configuration diagram of the running joining apparatus of the present invention. The traveling joining apparatus according to the present invention shown in FIG. 1 includes a bogie 1 running in the rolling direction, and a rear end portion of the rolled material 2 mounted on the bogie 1 which can be vertically moved while horizontally holding the rear end of the preceding rolled material 2. End clamping device 3, tip clamping device 5 that is mounted on the trolley 1 and horizontally holds the leading end of the succeeding rolled material 4, the rear end lower surface of the preceding rolled material 2 and the tip of the trailing rolled material 4 Processing device 6 for cutting the upper surface of part, and reduction holding device 7 for holding the processed surface in a reduced state
And a pressing device 8 for superimposing the working surfaces of the preceding rolled material 2 and the succeeding rolled material 4 and compressing and joining them to substantially the same thickness as the rolled material, and a path switching device for guiding the rolled materials 2 and 4 to the bogie 1. 9
The cart 1 is provided so as to travel horizontally (underground) below a horizontal pass line 10 for transporting the rolled materials 2 and 4 horizontally. In the following, a line on which the rolled materials 2 and 4 are transported onto the underground carriage 1 is referred to as a transfer path line 11.

The truck 1 has a plurality of wheels 1a, and the wheels 1a are adapted to run on a rail 12 extending in the rolling direction by a driving device (not shown). The rail 12 is provided so as to be parallel to and directly below the existing horizontal pass line 10, and the horizontal pass line 10 and the transfer pass line 11 are arranged on the same straight line.
The switching between the horizontal pass line 10 and the transfer pass line 11 is performed by the path switching device 9.

As shown in FIG. 2, for example, the path switching device 9 includes a movable frame 9a rotatably provided around an upstream end, an elevating cylinder 9b for rotating the movable frame 9a, A plurality of support rollers 9c provided on the upper surface of the movable frame 9a and supporting the rolled materials 2 and 4
And is composed of The support roller 9c normally functions as a part of the horizontal pass line 10, and the movable frame 9a is provided coaxially with the support roller 9c on the most upstream side so that the movable frame 9a can rotate about its axis 9d. Has become. The lifting cylinder 9b has a movable frame 9 at the tip.
a, the rear end thereof is connected to a floor or the like by a pin joint so as to be rotatable in the traveling direction plane of the rolled materials 2 and 4. Due to the expansion and contraction of the lift cylinder 9b, the movable frame 9a is rotated between the horizontal pass line 10 and the transfer pass line 11, and the pass lines of the rolled materials 2 and 4 on the support roller 9c are switched. Although not shown, a roof member (protector) is provided on the movable frame 9a, and when switching from the horizontal pass line 10 to the transfer pass line 11, the leading ends of the rolled materials 2 and 4 are surely transferred.
1 may be conveyed. The path switching device 9 is provided symmetrically with respect to the bogie 1 on the upstream side and the downstream side.

The processing device 6 includes a cylindrical cutter 6a that rotates about the axis in the width direction of the rolled materials 2 and 4, a swing device 6b that swings the cutter 6a in an oblique direction, and a cutter 6a. And a reversing device 6c for moving the roller back and forth in the rolling direction (left and right in the figure). The cutter 6a is rotatably mounted on the distal end portion of the swing arm 6d about an axis, and is rotated by a driving device (not shown). Also, the cutter 6a is longer than the entire width of the rolled materials 2 and 4, and a plurality of blades are provided on the outer periphery thereof with the same diameter, so that the single cutter 6a can simultaneously cut the entire width of the rolled materials 2 and 4. It has become. The swing device 6b includes a swing arm 6d
And a swing cylinder (not shown).
Is pivotally attached to the reciprocating base 6e of the reciprocating device 6c to swing the swing arm 6d so as to swing the cutter 6a in an oblique direction in an arc shape so that the height of the cutter 6a can be adjusted. It has become. The reciprocating device 6c includes a reciprocating table 6e and a reciprocating cylinder 6f, and reciprocates the reciprocating table 6e horizontally to move the cutter 6a forward and backward in the rolling direction (left and right in the drawing). With this configuration, by adjusting the height of the cutter 6a and moving the cutter 6a forward and backward, both the lower surface of the rear end portion of the preceding rolled material 2 and the upper surface of the front end portion of the subsequent rolled material 4 are simultaneously cut to be flush. can do. In addition, cutter 6
As the blade a, a cutter tip made of a cemented carbide and ceramic mainly made of WC (tungsten carbide) having high heat and wear resistance may be used, or an inclined shaft may be used instead of the cylindrical cutter 6a. A conical cutter that rotates about the center and scans the rolled material by scanning in the width direction of the rolled material may be used.

[0012] The trailing end clamping device 3
A plurality of rollers 3a for horizontally supporting the rear end portion, a clamp 3b for vertically moving the rear end portion of the preceding rolled material 2 between the rollers 3a, and a rear end lower surface of the preceding rolled material 2 The roller 3a and the clamp 3b are moved up and down between a processing height to be brought into contact with the upper surface of the cutter 6a and a press contact height for maintaining the rear end of the preceding rolled material 2 at substantially the same height as the front end of the subsequent rolled material 4. And an elevating cylinder 3c. Therefore, the rear end of the preceding rolled material 2 can be clamped by the clamp 3b while the rear end of the preceding rolled material 2 is horizontally supported by the rollers 3a. The lifting cylinder 3c
By holding the roller 3a and the clamp 3b at the processing height, the lower surface of the rear end portion of the preceding rolled material 2 and the upper surface of the front end portion of the subsequent rolled material 4 can be simultaneously cut by a single cutter 6a. Further, the working surfaces of the preceding rolled material 2 and the succeeding rolled material 4 can be overlapped while being held at the press contact height, and compressed and joined by the press contact device 8.

[0013] The tip clamping device 5 includes a trailing rolled material 4.
And a clamp 5b which vertically moves and clamps the leading end of the succeeding rolled material 4 between the roller 5a and the roller 5a. This configuration,
It is the same as the rear end clamp device 3 except that there is no elevating mechanism. Therefore, the tip of the succeeding rolled material 4 can be clamped by the clamp 5b while the tip of the succeeding rolled material 4 is horizontally supported by the roller 5a.

The pressing device 8 includes an upper die 8a having a lower surface in contact with the upper surface of the rear end of the preceding rolled material 2, a lower die 8b having an upper surface in contact with the lower surface of the leading end of the succeeding rolled material 4, and an upper die 8a.
Press device 8c for holding and compressing the lower mold 8b,
It is composed of The lower die 8b is fixed to the cart 1. The upper die 8a is attached to the lower surface of the ram 8d of the press device 8c, and moves up and down together with the ram 8d. Therefore, during processing by the processing device 6, the rear end of the preceding rolled material 2 and the front end of the subsequent rolled material 4 can be supported by the upper die 8a and the lower die 8b, and the ram is pressed by the press device 8c. By lowering 8d, the working surfaces of the preceding rolled material 2 and the succeeding rolled material 4 can be overlaid and compressed immediately after the completion of the working. In addition, by compressing the overlapped portion to approximately the same thickness as the rolled material by this compression, the joint can be rolled almost uniformly with almost no unevenness in the joint.

The reduction holding device 7 burns flammable gas such as COG (coke oven gas), LPG, and LNG with less oxygen than the amount for complete combustion, and reduces reducing gas such as hydrogen radicals and CH ₂ O radicals. This is a reducing flame burner which forms a reducing state by a reducing flame containing radicals. The reducing flame burner (7) is directly mounted on the frame or the trolley 1 of the roller 3a. The reducing flame gas is blown toward the machined surface of No. 4, so that the cut surface is always kept in a reduced state. Therefore, during the cutting process by the processing device 6 and the pressing process by the pressing device 8, the processed surface is kept in a reduced state, its oxidation is prevented, and high bonding strength can be secured.

The transfer path line 11 is connected smoothly to the path switching device 9 and forms a curved surface or a slope so as to be connected horizontally to the front end clamp device 5 and the rear transfer end line 3. A downstream transfer path line 11b which is connected horizontally and forms a curved surface or a slope to smoothly connect to the path switching device 9 is provided. These transfer path lines 11a, 11b
Has the same configuration except that the height at which it is connected to each of the clamping devices 3 and 5 is different. A plurality of transfer rollers 11c arranged so as to form a curved surface or a slope, and the transfer rollers 1
And a support base 11d that rotatably supports 1c. Although not shown, the transfer roller 11c
A guide member may be provided above the roller to ensure that the rolled materials 2 and 4 travel on the transfer roller 11c.

The operation of the running joining apparatus of the present invention will be described with reference to FIGS. (1) Rolled material conveyed on horizontal pass line 10
4 is an upstream transfer path line 11 by the path switching device 9.
a is naturally conveyed on its own weight. At this time, trolley 1
Stops at the most upstream side of the rail 12 (the right end in the figure). (2) The leading end of the preceding rolled material 2 passes through the bogie 1 and is conveyed to the downstream transfer path line 11b, and the trailing end is clamped by the trailing end clamping device 3. At this time, the leading end side of the succeeding rolled material 4 is held by the leading end clamping device 5, and the bogie 1 runs on the rail 12 in the same direction at the same speed as the rolled materials 2, 4. (3) While running on the rail 12 in this state, the lower surface of the rear end of the preceding rolled material 2 and the upper surface of the front end of the succeeding rolled material 4 are simultaneously cut by the processing device 6 so as to be flush with each other.
To join the processed surfaces. (4) After that, each of the clamp devices 3 and 5 is opened, and the joined rolled material is conveyed from the downstream transfer pass line 11b to the horizontal pass line 10. The carriage 1 runs backward on the rail 12 with the clamp devices 3 and 5 open, and returns to the most upstream side (right end in the figure).

According to the running joining apparatus of the present invention described above,
By providing the carriage 1 below the horizontal pass line 10, the transport of the rolled materials 2 and 4 to the transfer pass line 11 can be performed smoothly. That is, the rolled materials 2 and 4 are naturally conveyed from the horizontal pass line 10 to the transfer pass line 11 via the path switching device 9 by their own weight. Therefore, there is no need to actively transfer the rolled materials 2 and 4, and the running resistance generated in the rolled materials 2 and 4 can be reduced.
Stable and accurate cutting can be performed, and sufficient pressure welding can be performed. Further, while the rolled materials 2 and 4 are continuously supplied to the finish rolling mill, the preceding rolled material 2 and the subsequent rolled material 4 can be joined, and the two processes of cutting by the processing device 6 and pressing by the pressing device 8 can be performed. Since the entire width of the rolled materials 2 and 4 can be joined, the joining time can be greatly reduced, and the overall length of the rolling equipment can be shortened. Furthermore, when installing on an existing rolling line, there is no danger that an object will fall on the equipment or the rolled material, and the installation work can proceed while the existing rolling line is operating.

It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the spirit of the present invention.

[0020]

The traveling joining apparatus of the present invention described above is characterized in that the bogie is provided below the existing rolling line, and the deformation of the rolled material accompanying the change of the pass direction is assisted by its own weight. Therefore, running resistance generated in the rolled material can be reduced, stable and accurate cutting can be performed, and sufficient pressure welding can be performed. In addition, when installed on an existing rolling line, there is no danger of the object falling on the equipment or the rolled material, and the installation work can be performed while operating the existing rolling line, and has an excellent effect. .

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a running joint apparatus according to the present invention.

FIG. 2 is a diagram illustrating a path switching device.

FIG. 3 is a view showing a rolled material joining apparatus described in JP-A-7-323306.

[Description of Signs] 1 cart 1a wheel 2 preceding rolled material 3 trailing end clamp device 3a roller 3b clamp 3c lifting cylinder 4 trailing rolled material 5 leading end clamp device 5a roller 5b clamp 6 processing device 6a cutter 6b rocking device 6c Device 6d Swing arm 6e Return stage 6f Return cylinder 7 Reduction holding device 8 Pressure contact device 8a Upper die 8b Lower die 8c Press device 8e Ram 9 Path switching device 9a Movable frame 9b Elevating cylinder 9c Support roll 9d Shaft 10 Horizontal pass line Reference Signs List 11 transfer path line 11a upstream transfer path line 11b downstream transfer path line 11c support roll 11d support table 12 rails 13, 14 tilt guide

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI B23K 37/04 B23K 37/04 D B65G 47/52 101 B65G 47/52 101Z (72) Inventor Norio Iwanami Isogo-ku, Yokohama-shi, Kanagawa No. 1 Shin-Nakahara-cho Ishi Kawashima-Harima Heavy Industries, Ltd. Yokohama Engineering Center (72) Inventor Masami Oki 4-5-33 Kitahama, Chuo-ku, Osaka-shi Sumitomo Metal Industries, Ltd. (72) Inventor Koichi Sakamoto Osaka 4-5-33, Kitahama, Chuo-ku, Sumitomo Metal Industries Co., Ltd.

Claims (1)

[Claims] 1. A bogie that runs in the rolling direction, a rear end clamp device mounted on the bogie, and vertically movable while horizontally holding a rear end of a preceding rolled material, and a rear end clamp device mounted on the bogie. A tip clamping device that horizontally holds the leading end of the rolled material to be run, a processing device that cuts the lower surface of the rear end of the preceding rolled material and the upper surface of the leading end of the succeeding rolled material flush, and reduces the processed surface A reduction holding device that holds the state, a pressing device that overlaps the working surfaces of the preceding rolled material and the succeeding rolled material and compresses and joins to approximately the same thickness as the rolled material, and a path switch that guides the rolled material to the bogie. And a device, wherein the bogie is provided so as to travel horizontally below a horizontal pass line that horizontally transports the rolled material.