JPH0627646Y2 - Top roll polishing equipment for continuous hot dip metal plating equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a top roll polishing apparatus for continuous hot dip metal plating equipment.

[Problems to be Solved by Conventional Techniques and Inventions] In continuous hot dip galvanizing, after plating, it is conveyed to the next step through a top roll. , It may cause bleeding of plated steel strip.

Therefore, it is known that a brush roll or the like is rotated in contact with the top roll to remove the adhered metal. The removal of such adhered metal is accompanied by such drawbacks as contact with the top roll heated by the plated steel strip and heating of the brush roll due to friction, resulting in a marked decrease in durability.

[Means for Solving the Problem] The feature of the present invention is that continuous polishing metal plating in which a polishing roll having a polishing drum intermittently arranged in the roll axial direction is arranged in contact with the top roll width direction so as to be removably movable It is a top roll polishing device for equipment.

The frictional heat is cooled by the gap by intermittently arranging the polishing drum in the roll axis direction to form a polishing roll, contacting the top roll, and rotating (including reverse rotation) the top roll. In other words, the rotation causes an air flow to be generated in the intermittent portion to be cooled, thereby improving the durability of the polishing roll.

If the polishing drum is arranged intermittently in this way, the plated metal adhering to the entire width of the top roll cannot be reliably removed. Therefore, the polishing drum is moved again in the width direction of the top roll. Next, as the polishing drum, a drum provided with abrasive grains, a brush drum, or the like can be used, but it is preferable that polishing paper or polishing cloth be laminated in the circumferential direction to have a width of 3
A drum having a diameter of 0 to 80 mm and a diameter of 200 to 300 mm is arranged in the roll axial direction at intervals of 5 to 30 mm.

By configuring such a polishing roll to have a width shorter than the width of the top roll, the roll cost can be reduced. That is, it is preferable that the plating metal can be reliably removed by covering the entire width of the top roll in the repetitive movement.

[Embodiment] Next, an embodiment of the present invention will be described.

In FIG. 1, a steel strip 1 is cleaned in a plating pretreatment furnace 2, introduced into a molten metal plating (zinc etc.) tank 3, plated, and optionally alloyed in an alloying furnace 4 and then cooled. In a continuous hot-dip galvanizing facility that conveys to the next step via the top roll 6, a polishing device is attached to the top roll as described below.

In FIGS. 2 and 3, a mounting table 10 is provided on the base table 7 which is movable up and down by a piston 9 with one end being a fulcrum 8 and the other end being pushed as shown in the figure. The polishing roller 13 is arranged in the direction of the shaft 12 at intermittent intervals to form a polishing roll 13. The roll shaft 12 is rotatably installed on a support member 14.

Then, the polishing roll 13 is brought into contact with the top roll 6 by raising the mounting table 10 as a fulcrum 8 by the operation of the piston 9, and at the same time, the belt 16 is driven by the motor 15.
And the motor 15a rotates the screw bar 17 to move the base 7 over the guide rod 18 again, and the polishing roll 13 removes the plating metal adhering to the surface width direction of the top roll 6. To do.

[Effects of the Invention] By doing so, the temperature rise of the polishing roll can be surely prevented, and the durability can be remarkably improved.

[Brief description of drawings]

FIG. 1 is an explanatory view of a continuous molten metal plating facility, FIG. 2 is a side view of a polishing apparatus of an embodiment of the present invention, and FIG. 3 is a front view of the same. 1 ... Steel strip, 2 ... Pretreatment furnace 3 ... Molten metal plating tank, 4 ... Alloying furnace, 5 ... Cooling device, 6 ... Top roll, 7 ... Base, 8 ... Support point, 9 ... Piston, 10 ... Mounting table 11 ... Polishing drum, 12 ... Shaft 13 ... Polishing roll, 14 ... Shaft support member 15 ... Motor, 16 ... Belt 17 ... Screw bar, 18 ... Guide rod

Claims (1)

[Scope of utility model registration request] 1. A top roll polishing apparatus for continuous hot-dip galvanizing equipment in which polishing rolls having polishing drums arranged intermittently in the roll axis direction are arranged in contact with each other in the top roll width direction so as to be movable again.