JP2561151Y2 - 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]

However, in the edge plate described in the above-mentioned publication, a part of the molten metal squeezed by the wiping nozzle is splashed between the steel strip and the edge plate to form a steel strip of the edge plate. It adheres and solidifies on the lower part of the end face of the glue, which may scatter again and contaminate the steel strip.

In such a case, it is only necessary to remove the above-mentioned edge plate to remove the attached matter. However, it is extremely troublesome to remove or attach the edge plate every time the removing operation is performed. The mounting position must also be very carefully determined, which complicates the operation. In addition, productivity may be reduced.

[0006] Therefore, an object of the present invention is to provide an edge plate lifting / lowering device capable of removing extraneous matter adhering to an edge plate by an extremely simple operation.

[0007]

An object of the present invention is to provide a steel strip which is immersed in a plating solution, lifted vertically upward, and conveyed between opposed wiping nozzles. In the apparatus for preventing the edge overcoat of the plating solution by an edge plate installed at a position to shield the wiping gas from both nozzles,
A holding frame for holding the edge plate movably in the vertical direction, and the holding frame for moving the edge plate between a position where the edge plate blocks the wiping gas and a separated position outside both ends in the width direction of the steel strip. A horizontal moving mechanism section for horizontally moving, an edge plate provided with a rotating roller having a rotating axis orthogonal to an appropriate position on at least one of the front and back surfaces, and a retreating / retreating of the holding frame from the steel strip. Along with the advance, the rotating roller has an inclined base for raising and lowering the edge plate by rolling upward and downward while abutting on the side, and a support base for supporting the horizontal moving mechanism, A steel pin of the holding frame body is provided on an alligator, at least a portion of which is a scrap pin in which a steel strip of an edge plate is in sliding contact with a lower portion of an edge side end surface as the edge plate rises. It can be solved by having a plate.

[0008]

According to the present invention, when the steel strip of the edge plate is to remove the deposit attached to the lower part of the end face of the edge side,
The edge plate holding frame is horizontally moved outward with respect to the support base in the width direction of the steel strip. With this movement, the rotating roller on the edge plate surface comes into contact with the lower position of the inclined platform on the side of the support gantry of the horizontal moving mechanism, and when further moved, the rotating roller rises up the inclined surface, and the rotating roller The integral edge plate also moves to an upper predetermined position while being held by the holding frame.

In the process of moving the edge plate upward as described above, the scraping plate provided on the holding frame body scrapes off the adhered substance by the steel strip of the edge plate slidingly contacting the lower portion of the end face of the edge side. It is easy to remove deposits on the edge plate.

Next, when it is desired to return to the original edge plate mounting position again, if the holding frame is brought close to the supporting gantry in the steel strip direction, the rotating roller descends along the inclined table, 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, it is possible to remove the deposits on the lower part of the edge of the steel strip by raising the edge plate, so that there is no need to remove and attach the edge plate to remove the deposits. The above-mentioned complicated work is released, and the productivity is increased.

[0012]

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 an excessive amount of plating solution is removed by gas ejected from two wiping nozzles 2 provided so as to sandwich the steel strip 1. At this time, in order to prevent uneven 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 is used.
However, the plate surface is provided so as to exist in a plane extending in the width direction of the steel strip 1.

As shown in FIG. 1, the edge plate 3 is configured to be slidable up and down within a holding frame 4.
Its upper end has a rib 3a, and its lower end is provided with an outer cover 3b. Further, a drum-shaped rotary roller 5 is provided at an appropriate position on the front and back surfaces of the edge plate 3 and at a corresponding position on the front and back surfaces so as to be rotatable with a rotation axis perpendicular to the edge plate 3. I have.

On the other hand, reference numeral 15 denotes a support base for the horizontal moving mechanism, which is supported by beams 21. A stopper 7 is fixed to the horizontal moving mechanism support base 15, and when the edge plate 3 is advanced to the edge surface of the steel strip 1, the rib 3a engages with the stopper 6 and The lowest position of the plate 3 is determined.

On the other hand, reference numeral 4a denotes a scraping plate provided on the steel strip 1 side of the holding frame 4, and the scraping plate 4a is used to move the edge plate 3 upward in the process of moving the edge plate 3 upward. It comes into sliding contact with one side end surface.

Next, referring to FIGS. 2 to 4, the holding frame 4 will be described.
A mechanism for moving the edge plate 3 in the width direction at both ends of the steel strip 1 will be described.

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 provided, and a moving block 12 for suspending the holding frame 4 is straddled via traveling bodies 9, 9 running on the guide rails 8, 8. 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, 8 are preferably provided with a bellows heat-resistant rail cover 8a surrounding portions other than the traveling bodies 9, 9 in order to maintain slidability in consideration of use environment. 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 band 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 is a constant-load leaf spring manufactured by ONK (Osaka Heat Treatment Co., Ltd.), and is fixed to a position where the other end of the thin leaf spring tightly wound around the roller 10 is separated from the roller spring. Even if the separation distance is changed, as shown in FIG. 7, a constant load can be applied regardless of elongation. Therefore, even if the width of the steel strip 1 changes, for example, The pressing force against the steel strip 1 can be kept constant. In addition, although a spring and a wire-wound spring can be used in place of the coupling 11,
As shown in FIG. 7, in the case of the mainspring and the wire-wound spring, the load increases as the elongation increases, so that 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. 8, 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 connected to the magnet plate 17 via the connecting member 13 and the holding frame 4
(And the edge plate 3) can be freely separated from the steel strip 1. Reference numeral 18 denotes a handle for retracting the holding 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 an inclined table for raising and lowering the edge plate 3 provided in parallel to the width direction of the steel strip on the side surface of the steel 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, at the time of using the edge plate according to the present invention, that is, at the time of work for preventing edge overcoating, the edge plate 3 is brought close to the widthwise end of the steel strip 1 as shown in FIG. At this time, the edge plate 3 is lowered to the lowest position, and is inserted between the opposing wiping nozzles 2 and 2 at the same horizontal position as the wiping nozzle 2. 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 excess molten metal is performed.

When the operation of removing the adhered matter adhered to the edge plate 3 is performed, first, the operation of preventing the edge overcoat described above is interrupted, and as shown in FIG. The steel strip 1 is moved outward at both ends in the width direction. 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, whereby the rotating roller 5 is moved along the inclined base 7. Then, the edge plate 3 is moved upward. At this time, as shown in FIG. 5, the scraping plate 4a provided on the holding frame 4 slides on the edge of the steel plate 1 of the edge plate 3 so that the adhered material of the edge plate 3, in the illustrated example, The deposits X on the side end surfaces of the outer cover 3b are scraped off, whereby the deposits X on the edge plate 3 can be easily removed, and the influence on the quality when the edge plate 3 is used can be reduced.

When the edge plate 3 is to be mounted again after the above-mentioned operation of removing the deposits, the holding frame 4 is moved to a position close to the steel strip edge and to an end position of the wiping nozzle 2. By lowering the rotating roller 5 in contact with the inclined table 7 and lowering the edge plate 3 accordingly, the edge plate 3 can be extremely easily arranged at a predetermined position.

[0023]

As described above, according to the present invention, it is possible to easily and safely remove deposits on the edge plate by allowing the edge plate to move horizontally and vertically in the width direction of the steel strip.

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 an explanatory diagram of an operation state of a scraping plate.

FIG. 6 is a perspective view of a coupling in the device of the present invention.

FIG. 7 is a diagram showing a relationship between a load applied to a coupling and elongation.

FIG. 8 is a schematic explanatory view of a rodless cylinder.

[Explanation of symbols]

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

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 opposing wiping nozzles, the steel strip is located at a position near both ends in the width direction of the steel strip, and is positioned between the two nozzles. An apparatus for preventing an edge overcoat of a plating solution by an edge plate installed at a position where a wiping gas is shielded, comprising: a holding frame body that holds the edge plate so as to be vertically movable; and the edge plate shields the wiping gas. A horizontal movement mechanism for horizontally moving the holding frame so as to be able to move between a position and a separation position outside both ends in the width direction of the steel strip; and a rotation orthogonal to an appropriate position on at least one of the front and back surfaces. An edge plate provided with a rotating roller having an axis, and with the retreating / advancing of the holding frame body from the steel strip, the rotating roller is in contact with the upper and lower portions while contacting the rotating roller. A side that has a sloping base for raising and lowering the edge plate by rolling to the side, a support gantry that supports the horizontal movement mechanism, and a steel strip of the holding frame body are provided on an alligator, at least An edge plate lifting / lowering device characterized in that a part of the edge plate includes a lower portion of a steel strip of an edge plate and a scraping plate which is in sliding contact with the edge plate as it rises.