JP2530910Y2 - Edge plate lifting device - Google Patents

Description

[Detailed description of the invention]

[0001]

[Industrial application field] The present invention relates to a continuous hot-dip plating equipment,
In particular, in hot-dip galvanizing equipment such as continuous hot-dip galvanizing and continuous hot-dip aluminum plating, the edge plate lifting / lowering device used to prevent so-called edge overcoating, in which the coating weight of the steel strip edge becomes larger than that of the steel strip center. About.

[0002]

2. Description of the Related Art A continuous hot-dip coating is controlled by blowing a wiping gas from a wiping nozzle toward a steel strip pulled up from a plating bath. The gas jetted in opposite directions from the two wiping nozzles installed opposite to each other collide near the steel strip edge and cause turbulent gas flow, and the drawing force of the molten metal at the steel strip edge And a so-called edge overcoat to which excessive molten metal adheres is generated.

[0003] Conventionally, as a method for preventing such an edge overcoat, for example, an edge plate as described in Japanese Patent Application Laid-Open No. 63-105955 is inserted and installed at a portion where a wiping gas collides, and a wiping gas is inserted. A method of avoiding collision between the two has been adopted.

[0004] In general, the relative position between the steel strip and the wiping nozzle, that is, the pass state, may change according to the warp state of the steel strip or the state of the roll in the bath. In such a case, since the distance between the nozzle and the steel strip changes in the width direction of the steel strip, a uniform coating film cannot be obtained. In some cases, the steel strip is conveyed with one of the wiping gases biased. Therefore, it is necessary to adjust the pass line between the wiping gas nozzles by periodically observing the pass state of the steel strip between the wiping gas nozzles, or when changing the size of the steel strip or changing the basis weight of the molten metal.

[0005] It is necessary to grasp such a pass state of the steel strip between the nozzles by observing the steel strip from the width direction.

[0006]

However, conventionally, as in the case of the edge plate described in the above-mentioned publication, there is an edge plate fixedly installed at the end in the width direction of the steel strip between the nozzles. There was a problem that even when observing the pass state, the edge plate was in the way and could not be seen well.

[0007] In addition, when the zinc or the like adheres to the wiping gas nozzle, the edge plate interferes with the maintenance of the nozzle, and the work is difficult.

In such a case, it is only necessary to remove the edge plate. However, it is extremely troublesome to remove or attach the edge plate each time observation is performed. In addition, the mounting position of the edge plate is extremely carefully determined. And the operation becomes complicated.

Therefore, an object of the present invention is to raise and lower the edge plate so that the edge plate can be moved horizontally and vertically in the width direction of the steel strip by an extremely simple operation so that the observation of the steel strip and the maintenance of the nozzle can be easily performed. It is to provide a device.

[0010]

The object of the present invention is to provide a steel strip which is immersed in a plating solution, lifted vertically upward, and conveyed between opposing wiping gas nozzles. An apparatus for preventing edge overcoating of a plating solution by an edge plate installed at a position for shielding wiping gas from both nozzles, wherein a holding frame body for holding the edge plate movably in the vertical direction, and an edge thereof A horizontal movement mechanism for horizontally moving the frame so that the plate can move between a position where the gas blocks the gas and a separation position outside both ends in the width direction of the steel strip; and at least one surface of the front and back surfaces An edge plate provided with a rotating roller that rotates in parallel with the surface at an appropriate position, with the retreating / advancement of the holding frame from the steel strip,
The problem can be solved by having a horizontal moving mechanism support frame having an inclined platform on the side surface for raising and lowering the edge plate by rolling up and down while the rotating roller is in contact with the rotating roller.

[0011]

According to the present invention, when the path state is to be observed, the edge plate holding frame is horizontally moved outward with respect to the supporting base in the steel strip width direction. With this movement, the rotating roller on the edge plate surface contacts the lower part of the inclined platform on the side of the horizontal moving mechanism support base, and when further moved, the rotating roller rises up this inclined surface and is integrated with this rotating roller. The edge plate also moves to the upper predetermined position while holding the holding frame by the frame. Thereby, since the edge plate moves away from the end of the steel strip and moves upward, silent observation of the pass state of the steel strip between the wiping gas nozzles and maintenance of the nozzles can be easily performed.

Next, when it is desired to return to the original edge plate mounting position again, if the holding frame is brought close to the support base in the steel strip direction, the rotating roller descends along the inclined base, and accordingly, Then, the edge plate moves horizontally and descends to approach the position close to the steel strip width direction, so that the edge plate is placed in a state capable of preventing the edge overcoat. As described above, according to the present invention, the elevation of the edge plate can be performed by an extremely simple operation.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to embodiments. 1 and 2 are a side view and a front view for explaining a moving state of the edge plate lifting / lowering device according to the present invention. Steel strip 1 to be plated immersed in plating solution not shown
Is lifted upward, and the gas ejected from the two wiping gas nozzles 2 installed so as to sandwich the steel strip 1 causes
Excessive plating solution is removed. At this time, in order to prevent nonuniform adhesion of the plating solution at both ends in the width direction due to gas collision at both ends in the width direction of the steel strip 1, the edge plate 3 has a plate surface extending in the width direction of the steel strip 1. It is provided so as to exist in the extended plane.

As shown in FIG. 1, the edge plate 3 is configured to be slidable up and down in an outer frame 4 and has a rib 3a at an upper end thereof and a skin 3b at a lower end thereof. Installed. In addition, at appropriate positions on the front and back surfaces of the edge plate 3 and at corresponding positions on the front and back surfaces,
The rotating roller 5 is provided so as to be able to rotate in parallel with the surface of the edge plate 3. In addition, since the outer cover 3b tends to adhere zinc splash in the plating solution to this portion, only this portion can be removed and replaced.

On the other hand, reference numeral 15 denotes a horizontal moving mechanism support base, which is supported by a beam 21. A stopper 7 is fixed to the horizontal moving mechanism support base 15. When the edge plate 3 is retracted outward of the steel strip 1, when the rib 3 a engages with the stopper 7, an edge is formed. It is configured to be at the lowest position of the plate 3.

Next, a mechanism for moving the outer frame 4 and the edge plate 3 in the width direction of both ends of the steel strip 1 will be described with reference to FIGS.

On the front and back sides of the steel strip 1, two strips 2 along the width direction of the steel strip are provided.
The guide rails 8, 8 are disposed, and the outer frame 4 is provided via traveling bodies 9, 9 running on the guide rails 8, 8.
Is suspended over the moving block 12 for suspending. As a combination of the guide rail 8 and the traveling body 9, for example, a known LM guide (manufactured by THK) or the like can be suitably used. The guide rails 8 and 8 are provided with running bodies 9 and 9 for maintaining the slidability in consideration of the use environment.
It is desirable to provide a bellows heat-resistant rail cover 8a surrounding the other parts. On the side surface of the steel strip 1 of the moving block 12, a contact roller 25 that is in contact with the edge of the steel strip 1 is fixedly provided. The gap with the edge is adjusted. Further, a coupling roller 10 is attached to one side of the traveling bodies 9, 9, and the other end of the coupling 11 wound around the coupling roller 10 is connected to a coupling roller of one of the paired devices (not shown). By connecting with the steel strip 1, a constant pressing force against the steel strip 1 is secured. The coupling 11
This is a constant-load leaf spring manufactured by ONK (Osaka Heat Treatment Co., Ltd.). The constant distance is changed while the other end of the thin leaf spring wound in close contact with the roller 10 is fixed at a separated position. However, as shown in FIG. 6, a constant load can be applied regardless of elongation.
Of the steel strip 1 can be kept constant. In addition, although a spring and a wire-wound spring can be used instead of the coupling 11, as shown in FIG. 6, in the case of the spring and the wire-wound spring, the load increases with an increase in elongation. , The pressing force changes sequentially.

The other traveling body 9 is connected via a connecting member 13 to
It is connected to the rodless cylinder 14 arranged in parallel. The rodless cylinder 14 is a kind of air cylinder, and as shown in detail in FIG. 7, a movable partition plate 16 is housed inside a hollow cylinder box, and the partition plate 16 is provided at both ends. It moves by taking in and out of the air from the air suction holes 14a and 14b.
As the partition plate 16 moves, the magnet plate 17 provided outside the cylinder box moves left and right. Therefore, the traveling body 9 and the outer frame 4 (and the edge plate 3) connected to the magnet plate 17 via the connecting member 25 can be freely separated from the steel strip 1. . Reference numeral 18 denotes a handle for retracting the outer frame 4 and the edge plate 3 when the wiping nozzle 2 is replaced.

Further, as shown in FIG. 2, reference numeral 7 denotes a horizontal moving mechanism support base 1 for supporting a horizontal moving mechanism composed of the rodless cylinder 14, the guide rail 8, and the traveling body 9.
5 is a sloping table for raising and lowering the edge plate 3 provided in parallel with the width direction of the steel strip on the side surface of the edge plate 5 for engaging the rotating roller 5 to move the edge plate 3 up and down.

Next, a method of using the device of the present invention will be described. First, when the edge plate according to the present invention is used, that is, when the plating solution is removed, as shown in FIG.
The edge plate 3 is brought close to the widthwise end of the steel strip 1.
At this time, the edge plate 3 is lowered to the lowest position, is at the same horizontal position as the wiping gas nozzle 2, and
It is inserted between the wiping nozzles 2 facing each other.
By transporting the steel strip 1 upward in this state, collision of the wiping gas with the edge plate 3 is prevented, and the above-described work of removing the excess plating solution is performed.

In order to check the pass condition of the steel strip 1, first, the line is stopped, the work for removing the plating solution is interrupted, and as shown in FIG.
The steel strip 1 is moved outward at both ends in the width direction by the operation of.
As a result, the rotating roller 5 attached to the shaft protruding from the edge plate 3 is brought into contact with the lowermost portion of the inclined base 7, and is further moved, so that the rotating roller 5 is moved along the inclined base 7. Then, the edge plate 3 is moved upward. At this time, since there is a gap between the steel strip 1 and the edge plate 3 moving upward, it is easy to see the gap between the wiping gas nozzle 2 and the steel strip 1 from outside the width ends of the steel strip 1. Thus, the transport status of the steel strip 1 can be easily visually checked. Also, the wiping gas nozzle 2 and the like can be easily cleaned.

Further, when the above-described check of the pass status and the like are completed and the edge plate 3 is to be mounted again,
If the holding frame 4 is moved to a position close to the steel strip edge and to the end position of the wiping gas nozzle 2, the rotating roller is lowered in a state of contacting the inclined table 7 and the edge plate 3 is lowered accordingly. Thus, the edge plate 3 can be very easily arranged at a predetermined position.

[0023]

[Effects of the Invention] As described above, according to the present invention, the edge plate can be moved horizontally and vertically in the width direction of the steel strip.
Observation of the steel strip and maintenance of the nozzle can be easily performed.

In addition, according to the present invention, the equipment can be moved left and right by hand without any special driving device, so that the equipment cost is low.

[Brief description of the drawings]

FIG. 1 is an explanatory view of an operation state of a lifting device according to the present invention.

FIG. 2 is a side view of the device of the present invention.

FIG. 3 is a perspective view showing a state in which the device of the present invention is brought close to a steel strip.

FIG. 4 is a perspective view showing a state where the device of the present invention is separated from a steel strip.

FIG. 5 is a perspective view of a coupling in the device of the present invention.

FIG. 6 is a diagram showing the relationship between the load applied to the coupling and the elongation.

FIG. 7 is a schematic explanatory view of a rodless cylinder.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Steel strip, 2 ... Wiping gas nozzle, 3 ... Edge plate, 4 ... Edge plate holding frame, 5 ... Rotating roller, 7 ... Inclined table, 8 ... Guide rail, 9 ... Traveling body, 10
... Coupling roller, 11 ... Coupling, 12 ... Moving block, 14 ... Rodless cylinder, 15 ... Horizontal moving mechanism support stand.

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-50-91535 (JP, A) JP-A-63-86853 (JP, A) JP-A-63-105955 (JP, A) JP-A-63-1988 145760 (JP, A) JP-A-01-208441 (JP, A) JP-A-02-107752 (JP, A) JP-A-3-22060 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] When a steel strip is immersed in a plating solution and then lifted vertically upward and conveyed between wiping gas nozzles facing each other, the steel strip is located at a position near both ends in the width direction of the steel strip, and is located between the two nozzles. In a device for preventing edge overcoating of a plating solution by an edge plate installed at a position where a wiping gas is shielded, a holding frame body for holding the edge plate movably in the vertical direction, and the edge plate shields the gas described above. A horizontal movement mechanism for horizontally moving the frame so as to be able to move between a position and a separated position outside both ends in the steel strip width direction,
An edge plate provided with a rotating roller having a rotating surface parallel to that surface at an appropriate position on at least one of the front and back surfaces, and with the retreating / advancing from the steel strip of the holding frame, the rotating roller is An edge plate lifting / lowering device comprising: a horizontal moving mechanism support frame having an inclined base on a side surface for raising and lowering the edge plate by rolling upward and downward while abutting.