JP2548770Y2 - Electrode replacement equipment for steel strip welding equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrode plate replacing device for replacing an electrode plate of a steel strip welding device.

[0002]

2. Description of the Related Art In a strand type continuous furnace, for example, a thin steel strip is continuously passed through a heating zone or a cooling zone and subjected to a predetermined heat treatment. The steel strip has a limited length because it is rolled by a rolling mill, wound into a coil, moved, and unwound by a recoiler at the entrance of the continuous furnace. Then, the rear end of the previous steel strip and the front end of the next steel strip are welded and joined by a steel strip welding device. In addition, the continuous furnace has a buffer chamber for storing a steel strip of a certain length or more, and by supplying the steel strip from the buffer chamber while the bottom of the steel strip is stationary for welding, The steel strip in the processing zone is not stopped.

As a steel strip welding apparatus, for example, Japanese Patent Application Laid-Open No.
A flash butt welding apparatus of No. 50790 is known. That is, the flash butt welding apparatus includes a fixed base 1, a movable base 2, a fixed base electrode 3, a movable base electrode 4, and the like, as clearly shown in FIG. Flash butt (spark butt) welding of steel strip.

[0004]

[Problems to be Solved by the Invention] Generally, the above electrodes 3, 4
Is basically made of copper and weighs about 300 to 400
kg. It is necessary to replace the electrodes 3 and 4 with new ones every 10 to 15 days because spatter from the flash bat adheres to the electrodes 3 and 4 and the electrodes 3 and 4 are worn by contact with the steel strip.

[0005] This replacement operation is performed manually and by a crane or a hoist crane. For example, four people need two hours to replace four electrodes. That is, the replacement operation is not easy, and the operation involves hoisting the crane.

Accordingly, an object of the present invention is to provide an electrode replacement device which can be replaced by ordinary workers without using a crane.

[0007]

In order to achieve the above object, the present invention provides a bogie movable in the width direction of a steel strip;
Together to constitute vertically movably and replaceable electrode receiving electrode strip welding equipment from the arm for supporting the movable attached to the electrode plate in the running direction of the steel strip device to the carriage
First, the electrode receiving arm is moved to the first position for receiving the old electrode plate.
Electrode receiving arm and second electrode for transporting new electrode plate
Pole support arm, and these arms can be moved up and down in common
It is characterized by being attached to a frame.

[0008]

The electrode replacement device is set between the fixing and moving stands of the steel strip welding device, the old electrode plate is supported by the electrode receiving arm, and the new electrode plate is delivered. First electrode receiving arm
In the case of the second electrode receiving arm, the old electrode plate is supported by the first electrode receiving arm, and the new electrode plate is supported by the second electrode receiving arm.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals.
FIG. 1 is an exploded perspective view of an electrode replacement device for a steel strip welding device according to the present invention, and an electrode replacement device 1 for a steel strip welding device (hereinafter, abbreviated as “electrode replacement device 1”) has four wheels. 2
, A four column pipes 4 erected on the trolley 3, frame elevating means 5, 5 arranged between the column pipes 4, 4, and a vertical movement along the column pipe 4. Lifting frame 6, four first electrode receiving arms 7 movably held at a relatively upper portion of the lifting frame 6, and four first electrode receiving arms 7 movably held at a relatively lower portion of the lifting frame 6 And a ceiling plate 9. 9a is an eye plate for hanging a wire. The details of these components and the relationship between the components will be described below.

FIG. 2 is a front view of the electrode replacing device according to the present invention, wherein the wheel 2 is rotatably mounted on an axle 11 via a bearing 12, and the axle 11 is axle via bearing blocks 13, 13. The trolley 3 is mounted so as to be movable in the direction. When the handle 14 is turned, the coaxial pinion 15
Moves on the rack 16 on the axle 11. By turning the handle 14, the wheel 2 on the left side in the figure and the wheel behind it move left and right in synchronization. The same applies to the two right wheels 2.

As shown in FIG. 1, the lifting frame 6 is
Two upper pipes 6a, 6a and two lower pipes 6b, 6
b, four vertical pipes 6c, 6c, 6c, 6c and eight cross pipes 6d (... denotes a plurality; the same applies hereinafter.) constitutes a three-dimensional frame. As shown in FIG. 2, a first electrode receiving arm 7 with a free roll 7a and a neck pipe 7b is inserted into the upper pipe 6a. 17 is a guide roller, which is a neck pipe 7
By receiving b, the first electrode receiving arm 7 is accurately horizontally held. Further, the first electrode receiving arm 7 has upper and lower two-stage upper fingers 7c and lower fingers 7d at the ends. A second electrode receiving arm 8 with a free roll 8a and a neck pipe 8b is also inserted into the lower pipe 6b. This second electrode receiving arm 8 also has upper and lower two-stage upper fingers 8c and lower fingers 8d at the ends.

FIG. 3 is a diagram showing the connection between the column pipe and the lifting frame of the electrode replacement device according to the present invention.
A drum-shaped roll 18 is attached to a cross pipe 6d connecting the upper pipes 6a, 6a via a bracket 18a, and the drum-shaped roll 18 contacts the column pipe 4 and guides the lifting frame 6 up and down correctly. I do.

FIG. 4 is a central sectional view of the electrode replacing device of the present invention, and is an explanatory view of the frame elevating means 5. The frame lifting / lowering means 5 includes a hydraulic cylinder 5a mounted on the carriage 3 upward, a square block 5c mounted on the tip of a piston rod 5b thereof, and a sprocket 5d rotatably mounted on both side surfaces of the square block 5c. , 5d,
Chain 5 meshing with these sprockets 5d, 5d
e, 5e and a hydraulic pressure generating unit 5f. One end of the chain 5e is fixed to the carriage 3 side, and the other end is connected to the lifting frame 6 side. Therefore, if the hydraulic oil of the hydraulic pressure generating unit 5f is sent to the hydraulic cylinders 5a, 5a via the hydraulic hoses 5g, 5g and the piston rods 5b, 5b are advanced (raised), the lifting frame 6 is raised. If the piston rods 5b, 5b are retracted, the lifting frame 6
Descends.

The operation of the electrode replacing apparatus having the above-described configuration will be described. First, the operation of the steel strip welding apparatus will be described. FIGS. 5A and 5B are explanatory views of the operation of the steel strip welding apparatus according to the present invention. The steel strip welding apparatus 20 includes a moving stand 21 on the entrance side and a fixed stand 22 on the exit side. The moving stand 21 has an entrance upper electrode plate 23U and an entrance lower electrode plate 2
3B, and the upper stand electrode plate 24U and the lower outlet electrode plate 24B are attached to the fixed stand 22. The rails 25, 2 are provided on the movable / fixed stands 21, 22.
6, a rotary shearing machine (rotary shear), not shown, moves in the line cross direction (front and rear directions in the drawing), and the bottom 27B of the preceding steel strip 27 and the next steel strip are mounted. The top 28T of 28 is trimmed.

As shown in FIG. 5 (a), these cuts are abutted against each other at the positions indicated by x in the figure, and the bottom 2 of the steel strip 27 is formed.
7B is strongly held between the upper and lower electrode plates 24U and 24B on the outgoing side, and similarly, the top 28T of the next steel strip 28 is strongly held between the upper and lower electrode plates 23U and 23B on the incoming side. Hydraulic cylinders 29, 29 are used for clamping. Next, the electrode plate 2
When electricity is supplied to 3U, 23B, 24U, and 24B, spark butt welding is performed at the x mark position, and the bottom 27B of the steel strip 27 is formed.
And the next top 28T of the steel strip 28 are joined. In addition,
At this time, the distance L1 between the movable / fixed stands 21 and 22 is several tens of mm.

The electrode plates 23U, 23B, 24U and 24B must be replaced with new ones every 10 to 15 days due to contact abrasion with a steel strip or the like. In preparation for replacement, the movable stand 21 is moved rightward in the figure, and the distance between the stands 21 and 22 is increased to about 2 m. Upper electrode plates 23U and 24U are also 150
mm. Then, as shown in FIG. 5B, between the stands 21 and 22, the electrode replacement device 1 of the present invention is provided.
Is set as follows. It is preferable that the electrode replacement device 1 be put on standby on a drawer rail (not shown) on the front side of the drawing, and be moved laterally to the rails 25 and 26 of the stands 21 and 22 only during use.

FIGS. 6A to 6D and FIGS.
(D) is an operation explanatory view of the electrode replacement device of the present invention.
In the figure, the old electrode plate is shown without hatching, and the new electrode plate is shown with hatching. First, as shown in FIG. 6A, a new electrode plate 2 is attached to the second electrode receiving arm 8 during standby.
4U, 24B is placed. Then, the carriage 3 is moved laterally so that the center of the line and the center of the carriage 3 are aligned. The reason why the lifting frame 6 is set at the lower limit position is to lower the center of gravity of the electrode replacement device 1 to further reduce the overturning moment.

In FIG. 6B, the hydraulic cylinder 5a is started, and the lifting frame 6 is moved to the first level Lv1 (the matching position between the old lower electrode plate 24B and the lower finger 7d of the first electrode receiving arm 7). (Arrow), after the first electrode receiving arm 7 is advanced, the lower electrode plate 24B (provided that the fixing bolt B is removed) is transferred to the lower finger 7d of the first electrode receiving arm 7. (Arrow).
This transfer operation is performed manually in principle. Next, FIG.
As shown in (c), the lifting frame 6 is moved to the second level Lv.
2 (the matching position between the old upper electrode plate 24U and the upper finger 7c of the first electrode receiving arm 7).
The electrode receiving arm 7 is advanced, the empty upper finger 7c is brought into contact with the lower surface of the upper electrode plate 24U, the fixing bolt B is removed, and the upper electrode plate 24U is moved to the upper finger 7c of the first arm 7.
Put on. In FIG. 6D, the first electrode receiving arm 7 is retracted (arrow). Now the old electrode plate 2 to be replaced
4U, 24B has been removed.

Next, in FIG. 7A, the lifting frame 6 is raised to the third level Lv3 (the matching position between the new upper electrode plate 24U and the fixed stand 22) by the hydraulic cylinder 5a. In FIG. 7B, the second electrode receiving arm 8 is extended (arrow), and the upper electrode plate 24U is fixed at a predetermined position of the fixed stand 22 with the fixing bolt B. In FIG. 7C, the second electrode receiving arm 8 is retracted once, and the lifting frame 6 is lowered to the fourth level Lv4 (the matching position between the new lower electrode plate 24B and the fixed stand 22) (arrow), and the lower electrode plate 24B Is pushed out (arrow), and is fixed to a predetermined position of the fixing stand 22 with the bolt B. Thus, the second electrode receiving arm 8 is empty. In FIG. 7D, the empty second electrode receiving arm 8 is contracted, and the lifting frame 6 is lowered to the first standby. The electrode plates in the fixed stand 22 have been replaced (the electrode plates 24U and 24B without hatching have been removed and the electrode plates 24U and 24B with hatching have been attached). I just need to exchange Of course, it is free to change the order or replace both stands 21 and 22 simultaneously by hand.

FIG. 8 is a view showing another method of using the electrode replacement device of the present invention. The electrode replacement device 1 described with reference to FIG. 2 is characterized in that the wheels 2 are configured to be able to advance and retreat in the axle direction. Therefore, when there is not enough space to attach a drawer rail beside the steel strip welding apparatus 20 (see FIG. 5B), there is a method of use illustrated in FIG. The electrode replacement device 1 lifted by the crane hook 31 and the chain (or wire) 32 is lowered to the position shown by the imaginary line between the fixed / moving stands 21 and 22, and the wheels 2 and 2 are pulled out to face the rails 25 and 26. , Electrode replacement device 1 to rail 2
Place correctly on 5, 26. It is effective to retract the wheels 2 which are likely to hinder the ascent and descent by the crane, and it is preferable when the rails 25 and 26 are formed in the recesses of the fixed / movable stands 21 and 22.
In FIG. 8, the lifting frame 6 is set at a level Lv1 shown in FIG.
And the step of FIG. 7D is omitted. But,
This level is not limited to this and is arbitrary.

FIG. 9 is a diagram showing another embodiment of the electrode replacement device according to the present invention. The electrode replacement device 41 includes a pull-out wheel 2, a cart 3, a column pipe 4, and a pipe length. It comprises a small lifting frame 42, a set of first electrode receiving arms 43, a set of second electrode receiving arms 44, a ceiling plate 45, a rotary bearing 46, and a plurality of rollers 47.

After the electrode plates 24U and 24B of the fixed stand 22 are replaced in the manner described with reference to FIGS. 6 and 7, the electrode replacement device 41 is pulled out to a drawer rail, the old electrode plate is reloaded on a new electrode plate, Rotating bearing 4
The electrode plate of the movable stand 21 may be replaced by pushing the electrode replacement device 41 again between the stands 21 and 22 by inverting 180 ° by the action of the roller 6 and the roller 47. The electrode replacement device 41 is characterized in that it is lighter in weight and lower in manufacturing cost than the electrode replacement device 1 of FIG.

[0023]

As described above, according to the present invention, a trolley made movable in the width direction of the steel strip, and an electrode plate mounted on the trolley so as to be able to move up and down and move in the running direction of the steel strip. The electrode replacement device is composed of an electrode receiving arm for supporting and the electrode plate is replaced with this electrode replacement device. Efficiency is increased, and skill is not required, and the burden on the operator is greatly reduced. Moreover, the electrode receiver
The arm is the first electrode receiving arm that supports the old electrode and the new
And a second electrode receiving arm that carries a new electrode plate.
Thus, the working time can be greatly reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an electrode replacement device for a steel strip welding device according to the present invention.

FIG. 2 is a front view of the electrode replacement device according to the present invention.

FIG. 3 is a diagram showing the connection between the column pipe and the lifting frame of the electrode replacement device according to the present invention.

FIG. 4 is a central sectional view of the electrode replacement device of the present invention.

FIG. 5 is an explanatory view of the operation of the steel strip welding apparatus according to the present invention.

FIG. 6 is a diagram illustrating the operation of the electrode replacement device of the present invention.

FIG. 7 is a diagram illustrating the operation of the electrode replacement device of the present invention.

FIG. 8 is a diagram showing another method of using the electrode replacement device of the present invention.

FIG. 9 is another embodiment of the electrode replacement device according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Electrode replacement device, 2 ... Wheels, 3 ... Dolly, 5 ... Frame elevating means, 6 ... Elevating frame, 7 ... Electrode receiving arm (first electrode receiving arm), 8 ... Electrode receiving arm (second electrode receiving arm) , 20 ... steel strip welding apparatus, 21 ... moving stand, 22 ... fixed stand, 23U, 24U ... upper electrode plate, 23B, 24B ... lower electrode plate, 27 ... steel strip ahead, 2
7B: bottom of previous steel strip, 28: next steel strip, 28T: top of next steel strip.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Innovator Susumu Funabashi 3 Kashima-cho, Kashima-gun, Ibaraki Pref., Sumitomo Metal Industries, Ltd. Inside the Kashima Works of Metal Industry Co., Ltd. (56) References JP-A-63-40682 (JP, A)

Claims (1)

(57) [Scope of request for utility model registration] 1. An electrode plate replacement device for replacing an electrode plate in a steel strip welding device for welding and joining a bottom of a previous steel strip and a top of a next steel strip, wherein the electrode plate replacement device includes: A steel strip welding apparatus comprising: a trolley movable in the width direction of the steel strip; and an electrode receiving arm mounted on the trolley so as to be movable up and down and movable in the running direction of the steel strip to support an electrode plate. in use the electrode replacement device, the electrode receiving
The arm has a first electrode receiving arm for receiving the old electrode plate.
And a second electrode receiving arm for transporting the new electrode plate
These are mounted on a common lifting frame.
Electrode replacement equipment for steel strip welding equipment characterized by the fact that
Place.