KR200184376Y1 - Guide apparatus for preventing abration of welder electrode for welding continuous annealing strip - Google Patents

Abstract

The present invention relates to a guide device for preventing wear of the welder electrode for continuous annealing strip welding, the purpose of which is to raise the preceding strip as a support roll that moves up and down during the movement of the preceding strip during welding of the strip for continuous strip annealing operation in a cold rolling mill. The support is intended to prevent wear of the welder electrode piece due to friction with the preceding strip.

Technical support for achieving the above object is inserted into the guide groove (22a) formed at regular intervals in the longitudinal direction of the welder electrode piece (22) a plurality of support pieces that are provided with a guide roll (52a) at the front end ( 52 is formed integrally on one side and the guide bar 50 is formed integrally in the longitudinal direction at the bottom portion; and the guide rail inserted into the guide groove 54 of the guide bar 50 ( 62 is provided at the upper side, and has an upper block 64 moved back and forth as a cylinder 64a extended to one side, and a lower block 66 in close contact with the lower side of the upper block 60. The contact surface 68 of the lower block 64, 66 is a guide block 60 is formed to be inclined; And, the guide block 60 is seated on the inside, side plates 72a and 72b through which the ends of the cylinder 64a and the upper block 64 pass through are coupled to both sides of the frame 10 It is characterized in that it comprises a; support block 70 is mounted on the upper side.

Description

Guiding apparatus for preventing abration of welder electrode for welding continuous annealing strip}

The present invention relates to a welder (welder) for welding the strip for continuous strip annealing operation of the cold rolling mill, more specifically, on the welder electrode of the fixed stand that is in close contact friction when the preceding strip of the strip welded to each other A continuous annealing strip is installed to prevent the wear of the electrode due to the friction between the welding strip of the leading strip and the fixed stand by installing a moving guide device, and to prevent the welding failure between the leading and trailing strips due to electrode wear. The present invention relates to a wear prevention guide device for welding weld electrodes.

In general, in the continuous strip annealing operation of a cold rolling mill, the annealing operation is performed by continuously welding the strip, and then the surface plating and the coil winding operation of the strip are performed. Such continuous welding operation of the strip is schematically illustrated in FIG. 1. Although shown, the leading strip 110 and the trailing strip 120 unwound at the payoff reel 140 are welded to the continuous strip 100 so as to be connected to each other in the welder 130.

A conventional welder 130 for welding such a continuous strip 100 is shown in FIGS. 2 and 3.

That is, as shown in Figures 2 and 3, the upper and lower die set (212, 222) to which the separated leading and trailing strips 110, 120 are guided is fixed and movable stand of the welder 200 ( 210 and 220 are installed at one side and the other side of the die set (212, 222) to the one side of the fixed and movable stand (210, 220) in the center of the preceding and trailing strips (110, 120) The table rolls 214 and 224 to be moved are respectively provided, and welder electrode pieces 216 and 226 are respectively provided to the upper and lower die sets 212 and 222.

Accordingly, in the welding operation of the strip 100 by the welder 200 having the same configuration as the mall, the preceding and trailing strips 110 and 120 are fixed and movable stands 210 and 220 of the welder 200. When the table rolls 214 and 224 are spaced apart at regular intervals for welding, the movable stand 210 is rapidly moved to the fixed stand 220, and the upper and lower die sets As welder electrodes 216 and 226 are in close contact with each other, each end of the preceding and trailing strips 110 and 120 is instantaneously welded.

However, in the above-described conventional welder 200 for continuous strip operation, as shown in FIGS. 1 to 3, in order to perform the above welding operation, the preceding and trailing strips 110 ( The spacing between the 120 and about 120mm should be maintained constant. When the spacing of the preceding and trailing strips 110 and 120 is adjusted, the preceding and trailing strips 110 and 120 are fixed and movable stand 210 ( Among the upper and lower die sets 220, in particular, they move in close contact with the welder electrodes 216 and 226 provided in the lower die sets 214 and 224. As described above, severe wear phenomenon occurs in the weld electrodes 216 and 226, particularly in the weld electrodes 216 on the side of the preceding strip 110, which are advanced after the reverse movement.

Therefore, as shown in Figure 5a, during the welding operation of the strip using the worn welder electrode, the welding portion between the leading and trailing strips 110, 120 is pushed downward as the wear of the electrode piece is convex downward. The welding failure of the strip 130 is generated, in particular, as shown in Figure 5b, during the post-fixed trimming operation of the continuous welded strip 130, the welding failure portion is removed, on the contrary, foreign matter is attached to the upper portion The strength of the strip 130 is extremely fragile.

As a result, the above-described welding defect of the strip 100 causes damage to the surface of the peripheral equipment during the transfer of the strip, which causes equipment failure, while deteriorating the quality of the strip product and cutting the defective parts. There are various problems such as increasing the production cost of the strip, and lowering the productivity of the entire strip due to the delay of work such as replacement of the welder electrode.

The present invention has been made in order to improve the various problems as described above, the purpose is to provide a guide device for moving up and down on the welder electrode of the fixed stand that is in close contact friction during the movement of the preceding strip of the strip to be welded to each other Abrasion prevention guide of weld electrode for continuous annealing strip welding which prevents abrasion of electrode by friction between welding electrode of leading strip and fixed stand, and prevents welding defect between wire and trailing strip by electrode wear. It is to provide a device.

1 is a schematic view showing a welder of a typical continuous annealing strip process

Figure 2 is a schematic front view showing a conventional welder for continuous annealing strip welding

Figure 3 is a schematic front view showing a welder electrode for conventional continuous annealing strip welding

4 (a) and 4 (b) are main parts of the electrode wear state of the conventional welder for continuous annealing strip welding.

5 (a) and (b) is a front view and a main view showing the welding state of the strip according to the electrode wear of the conventional welder for continuous annealing strip welding

Figure 6 is a schematic diagram showing a guide for preventing wear of the welder electrode for continuous annealing strip welding according to the present invention

Figure 7 is an exploded perspective view showing a wear prevention guide device of the welder electrode for continuous annealing strip welding of the present invention

8 is an operation state showing the wear prevention guide device of the welder electrode for continuous annealing strip welding of the present invention

Explanation of symbols on the main parts of the drawings

1 .... welder for strip welding 10 .... welder frame

20 .. Die set 22 .... Electrode piece

40 .... welder electrode guide device 50 .... guide bar

52a .... Guide roll 54 .... Guide groove

60 .... guide block 62 .... guide rail

64 .... upper block 66 .... lower block

70 .. Support block 72 .... Support block side plate

As a technical configuration for achieving the above object, the present invention is a die set is mounted to one side of the frame and a welder electrode piece for welding the strip on the transport path of the strip, and the strip to the rear of the die set A welder for continuous annealing strip welding, comprising: a table roll mounted downwardly on the frame to be transported;

A guide bar which is inserted into the guide grooves formed at regular intervals in the longitudinal direction of the welder electrode pieces, and a plurality of support pieces having a guide roll installed at one end thereof are integrally formed on one side thereof, and a guide groove integrally formed in the longitudinal direction at the bottom thereof;

A guide rail inserted into the guide groove of the guide bar is installed on the upper part, and includes an upper block moved forward and backward as a cylinder extended to one side, and a lower block in close contact with the lower side of the upper block. The contact surface is formed to be inclined guide block; And,

Wearing of the welder electrode for continuous annealing strip welding comprising a; guide block is seated on the inside, side plates through which the ends of the cylinder and the upper block pass are coupled to both sides, and a support block mounted on the upper side of the frame. By providing a guide device for prevention.

Hereinafter, a preferred embodiment of the orphan according to the accompanying drawings in detail as follows.

Figure 6 is a schematic view showing a wear preventing guide device for the continuous annealing strip welding welder electrode according to the present invention, Figure 7 is an exploded perspective view showing a wear preventing guide device for the continuous annealing strip welding welder of the present invention, 8 is an operational state diagram showing a wear prevention guide device of the welder electrode for continuous annealing strip welding according to the present invention is a guide bar (40) for preventing wear of the welder electrode for continuous annealing strip welding according to the present invention; It is comprised as the guide block 60 and the support block 70.

The welder 1 performing strip welding for the strip continuous annealing process of the cold rolling mill is equipped with a welder electrode piece 22 for welding the strip on a transport path of the strip and installed to one side of the frame 10. And a table roll 30 mounted downward on the frame 10 so as to transfer the strips to the rear of the die set 20.

In addition, the guide bar 50 is inserted into the guide grooves 22a formed at regular intervals in the longitudinal direction of the welder electrode piece 22, and a plurality of support pieces 52 having a guide roll 52a installed at the tip portion thereof. It is integrally formed on one side and the guide groove 54 is integrally formed in the longitudinal direction at the bottom.

In addition, the guide block 60, the upper guide rail 62 is inserted into the guide groove 54 of the guide bar 50, the upper block is installed on the upper side, and moved back and forth as a cylinder 64a extended to one side And a lower block 66 in close contact with the lower side of the upper block 60, and the contact surfaces 68 of the upper and lower blocks 64 and 66 are inclined.

In addition, the support block 70, the guide block 60 is seated on the inside, the side plates 72a and 72b through which the ends of the cylinder 64a and the upper block 64 are coupled to both sides. And is mounted on the upper side of the frame 10.

On the other hand, the end of the upper block 64 is provided with a sensor tooth bar 69 that moves in the seventh operation of the cylinder 64a, the upper portion of the support block 70 on the frame 10 The first and second sensors 80a and 80b, which operate as the watch bar 69, are provided respectively.

In addition, both side plates (72a, 72b) of the support block 70 in the vertical groove (72a ') in the vertical direction through which the rod (64a') of the cylinder (64a) and the end of the upper block 64 at all times It is made of a configuration in which the rectangular grooves 72b 'through which each is integrally formed.

Referring to the operation and effects of the present invention made in the above configuration in detail as follows.

As shown in Figures 6 to 8, the fixed stand (1a) of the frame 10 of the welder (1) to perform the welding of the separate leading and trailing strips for the continuous annealing process of the strip (2) of the cold rolling mill The welder electrode pieces 22 for welding the strips 2 in the instantaneous contact are provided in the die set 20 provided at the front and the lower side, and the welder 1 fixed stand 1a is located behind the welder electrode 22. Table roll 30 is installed on the frame 10 of the lower side to perform the movement of the strip 2, that is, the preceding strip (2).

On the other hand, the welder electrode piece 22 is formed with approximately four to five guide grooves 22a in the longitudinal direction, and the guide grooves 22a of the guide device 40 installed on the frame 10. The support piece 52 integrally protruded into one side surface of the upper guide bar 50 is inserted, and the guide roll 52a is installed at the tip end of the support piece 52, which will be described in detail later. When the guide bar 50 moves up and down, the fraudulent guide roll 52a rises and is supported in the state of being lifted up integrally from the preceding strip 2, which in turn is in close contact with the welding electrode piece when the preceding strip 2 is moved. It is to be able to prevent abrasion by friction between (22).

In addition, the guide groove 54 integrally formed at the bottom of the guide bar 52 in the longitudinal direction of the guide bar 52 has a polygonal guide installed in the longitudinal direction on the upper block 64 of the guide block 60. The rail 62 is interpolated, so that the guide bar 50 moves more precisely and stably on the upper block 64.

At this time, the upper block 64 is in close contact with the upper side of the lower block 66, in particular the bottom and the upper surface is in contact with the upper block 64 and the lower block 66 is formed in contact with each other inclined (68) On one side of the upper block 64, the rod 64a of the cylinder 64a horizontally installed with the frame of the welder 10 as a fixing bracket is fixed by a screw method, and the overlapping upper and lower blocks 64 ( The guide block 60 made of 66 is mounted in the U-shaped support block 70 which is integrally bolted to the welder frame 10 in the longitudinal direction of the welder electrode piece 22.

Thus, when the cylinder 64a is actuated, the upper block 64 is advanced and eventually the upper block by the lower block 66 fixed in the support block 70 by the inclined contact surface 68. 64 rises, and thus the guide bar 50 engaged with the rail 62 on the upper block 64 is also raised integrally through the cutout 70a of the support block 70, and the guide bar The guide roll 52a installed on the support piece 52 of the 50 lifts the preceding strip 2, which moves to adjust the welding gap, which is to be moved in close contact with the welder electrode piece 22. A predetermined interval is formed therebetween to prevent friction between the preceding strip 2 and the welder electrode piece 22, and thus wear of the welder electrode piece 22 is prevented.

That is, in the worn state of the conventional welder electrode piece, when the instantaneous welding of the strip 2 is prevented from deflecting downwards, it is possible to obtain welded portions of a more uniform strip, which improves the product quality of the strip 2. It is to let.

At this time, the cylinder 64a for movement of the upper block 64 in the long groove 72a 'and the square groove 72b' formed in the side plates 72a and 72b bolted to both sides of the support block 70, respectively. The rod 64a 'and the end of the upper block 64 will pass.

Subsequently, an end portion of the upper block 64 through the square groove 72b 'of the side plate 72b of the support block 70 is provided with an L-shaped quench bar 69, thereby forming the upper block ( When the 64 is moved, the first and second sensors 80a and 80b installed on the frame 10 of the welder 1 are operated, respectively, that is, the upper block 64 does not move. Before the guide roll 52a lifts and supports the preceding strip 2, the tooth bar 69 is held by the first sensor 80a, and the upper block (3) is moved by the forward operation of the cylinder 64a. When 64 is moved and the watch bar 69 operates the second sensor 80b, the operation of the cylinder 64a is stopped, and as a result, the cylinder 64a is used as the first and second sensors 80a and 80b. ) The working width is adjusted.

Accordingly, it is possible to prevent wear of the welder electrode piece 22 for welding the strip 2 and to prevent welding failure of the strip due to electrode wear.

As described above, according to the present invention, the wear prevention guide device of the welder electrode for continuous annealing strip welding is provided by installing a guide device which moves up and down on the welder electrode of the fixed stand that is in close contact friction when the preceding strip of the strip to be welded to each other moves. This prevents wear of the electrode due to friction between the welding electrodes of the strip and the fixed stand, and thus prevents welding failure between the lead and the trailing strip due to electrode wear. It is effective in improving the quality of strip products and preventing the cost increase due to poor welding.

While the subject innovation has been shown and described with respect to specific embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit or scope of the subject innovation as provided by the following claims. I would like to clarify that knowledge is easy to know.

Claims (3)

A welder electrode piece 22 for welding the strip on the transport path of the strip is mounted, and the die set 20 is installed to one side of the frame 10, and the strip is transferred to the rear of the die set 20. In the welder (1) for continuous annealing strip welding having a table roll (30) mounted below the frame (10), A plurality of support pieces 52 are inserted into the guide grooves 22a formed at regular intervals in the longitudinal direction of the welder electrode piece 22 and the guide rolls 52a are installed at one end thereof. A guide bar 50 in which the grooves 54 are integrally formed in the longitudinal direction; A guide rail 62 inserted into the guide groove 54 of the guide bar 50 is installed at an upper portion, and an upper block 64 which is moved back and forth as a cylinder 64a extended to one side, and the upper block 60. The lower block 66 is in close contact with the lower side of the), and the contact surface 68 of the upper and lower blocks 64, 66 is formed to be inclined guide block 60, The guide block 60 is seated on the inner side, and the side plates 72a and 72b through which the end portions of the cylinder 64a and the upper block 64 pass, are coupled to both sides, and above the frame 10. A support device for preventing wear of the welder electrode for continuous annealing strip welding, characterized in that it comprises a; According to claim 1, At the end of the upper block 64 is provided with a sensor tooth bar 69 that moves in the seventh operation of the cylinder (64a), the support block 70 on the frame (10) The first and second sensors (80a, 80b) which are operated as the hitch bar 69 is installed on the upper portion of the guide device for preventing wear of the welder electrode for continuous annealing strip welding, According to claim 1, Both side plates (72a, 72b) of the support block 70 in the vertical groove (72a ') in the vertical direction through which the rod (64a') of the cylinder (64a) and the constant upper block ( Guide device for preventing wear of the welder electrode for continuous annealing strip welding, characterized in that the square groove (72b ') through which the end of the (64) passes through each one is formed integrally.