JPH01249159A - Device for coating lubricating oil to wire rod to be drawn - Google Patents

Abstract

PURPOSE:To uniformly coat a lubricating oil having a high viscosity to the surface of a wire rod to be drawn by passing the wire rod through a wire rod passage between wire rod guide rollers on both front and rear sides and passing the wire rod on an intermediate bobbin with brushes while slightly pressing the same to the bobbin. CONSTITUTION:Two sets of the wire rod guide rollers 3 each set consisting of a pair of the upper and lower rollers are provided on both the front and rear sides above a lubricating oil tank 1 in which the lubricating oil 2 having the high viscosity is filled. The bobbin 5 with brushes is constituted rotatable between the wire rod guide rollers 3 on both the front and rear sides while the lower part thereof is held immersed in the lubricating oil 2. The brushes 7 are implanted to face each other on the inner side between the flanges 5a on both sides and further, the bottom part of the flanges 5a is formed to the outside diameter slightly taller than the wire rod passed between the rollers 3. As a result, the lubricating oil having the high viscosity is coated uniformly on the surface of the wire rod to be drawn with good workability.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an apparatus for applying lubricating oil to the surface of a wire during wire drawing.

(Prior Art) Water-soluble lubricating oil is generally used in wire drawing of precious metals. This can be done by simply washing with hot water after the wire drawing process is completed.
This is because internal cleaning is easy.

However, Pt alloys (e.g. Pt-1r alloy) and Pd alloys (
For example, Pd-Ru alloy (Pd-Ru alloy) is a hard material, and therefore has problems such as galling with the die, damaging the die, and causing fogging, hangnails, and curling on the surface of the wire.

This is due to the fact that water-soluble lubricating oil has low viscosity and the wire rod is hard.
This is because the lubricant does not enter the gap sufficiently and runs out of lubricant.

Therefore, in the past, highly viscous lubricating oil was used for drawing particularly hard wire rods.

(Problems to be Solved by the Invention) By the way, the water-soluble lubricating oil described above was sprayed onto the wire rod using a nozzle on the die insertion side of the wire rod, but it is difficult to efficiently spray the highly viscous lubricating oil onto the wire rod. Since it is not possible to apply it to a cloth or degreased surface, or soak it and apply it while lightly pressing the wire rod, it is difficult to work, and it is not possible to apply it evenly. There was a problem in that highly viscous lubricating oil could not be supplied.

(Object of the Invention) The present invention has been made to solve the above-mentioned problems, and it is possible to uniformly apply a highly viscous lubricating oil to the surface of the wire rod to be wire drawn, and to provide a wire rod to be drawn with good workability. The object of the present invention is to provide a lubricating oil application device.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the lubricating oil application device for the wire rod to be wire-drawn according to the present invention has a lubricating oil tank filled with a highly viscous lubricating oil, and a lubricating oil tank filled with a lubricating oil tank. Two pairs of upper and lower wire rod guide rollers are provided on both the front and rear sides of the upper side, and the lower part of the wire rod guide rollers on both the front and rear sides are immersed in lubricating oil so as to be rotatable. It consists of a brush-equipped bobbin in which a brush is installed and the bottom between the flanges has an outer diameter slightly higher than the wire passage between the front and rear guide rollers.

(Function) The device configured as described above for applying lubricating oil to the wire rod to be wire-drawn is installed in front of the die, and when drawing the wire rod,
The wire is first passed between the rear wire guide rollers, then passed between the flanges of the intermediate brushed bobbin, and then passed between the front wire guide rollers and fed into the die.

In this way, by passing the wire through the wire passage between the front and rear wire guide rollers and into the intermediate brushed bobbin while pressing it slightly, the brushed bobbin, which is immersed in lubricating oil, rotates and is filled with lubricating oil. The brush between the flanges allows the highly viscous lubricating oil to be evenly applied to the outer periphery of the wire with good workability. The wire rod evenly coated with this lubricating oil is fed into the die, so that the highly viscous lubricating oil is stably supplied between the wire rod and the die.

(Embodiment) An embodiment of a lubricating oil application apparatus for a wire rod to be wire-drawn according to the present invention will be described with reference to the drawings. In FIG. 1, 1 is a lubricating oil tank, and this lubricating oil tank 1 is filled with J-1 (trade name) as a highly viscous lubricating oil 2. Reference numeral 3 denotes wire rod guide rollers for guiding the wire rod 4, and a pair of upper and lower wire rod guide rollers are provided on both the front and rear sides above the lubricating oil tank 1. Reference numeral 5 designates a plastic brushed bobbin which is partially immersed in lubricating oil 2 between a pair of upper and lower wire rod guide rollers 3 on both the front and rear sides and is rotatably supported by a shaft 6 on a tank wall. As shown in FIG. 2, this brushed bobbin 5 has flanges 5a on both left and right sides having a large diameter, and brushes 7 made of oil-resistant fibers are implanted facing each other inside the flanges 5a. The brushes 7 are made longer toward the outer periphery of the 7 langes 5a and alternately intersect to make it easier to apply the lubricating oil 2. The outer diameter is slightly higher than that of the wire rod passage between the two.

The wire rod to be drawn using the lubricating oil applicator 8 configured as described above, for example, has a diameter of 2. Omm PtPt-1r3Q
To apply highly viscous lubricating oil 2 to the outer periphery of the Pt-Ir 30wt% alloy wire 4, first pass the Pt-Ir30wt% alloy wire 4 between the wire guide rollers 3 on the rear side, as shown in FIG. It passes between the flanges 5a of the brushed bobbin 5, and then between the wire guide rollers 3 on the front side. In this way, the Pt-1r3ht% alloy wire 4 is passed through the wire passage between the front and rear wire guide rollers 3 and into the intermediate brushed bobbin 5 while being slightly pressed, thereby creating a brushed bobbin whose lower part is immersed in the lubricating oil 2. 5 rotates, and the brush 7 between the flanges 5a filled with lubricating oil 2 causes the P
A highly viscous lubricating oil 2 is uniformly applied to the outer periphery of the t-Ir 30wt% alloy wire 4. And this lubricant 2
The Pt-Ir30wt% alloy wire 4 coated uniformly is fed into a die (not shown), so that the highly viscous lubricating oil 2 is stably supplied between the wire 4 and the die.

(Effects of the Invention) As can be seen from the above explanation, according to the lubricating oil coating device for wire rods to be wire-drawn according to the present invention, highly viscous lubricant can be applied uniformly and efficiently to the surface of the wire rod to be wire-drawn with good workability. Since it can be applied well, it is possible to stably supply highly viscous lubricating oil between the wire rod and the die. Therefore, during the wire drawing process, galling of the wire rod with the die does not occur, the die is not damaged, and the surface of the wire rod is not covered, hangnailed, or turned over.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view of an apparatus for applying lubricating oil to a wire rod to be wire-drawn according to the present invention, and FIG. 2 is an enlarged longitudinal sectional view of a bobbin with a brush in the lubricating oil applying apparatus. Applicant: Tanaka Kikinzoku Kogyo Co., Ltd.

Claims (1)

[Claims] 1. A lubricating oil tank filled with highly viscous lubricating oil, two pairs of upper and lower wire rod guide rollers installed on both front and rear sides above the lubricating oil tank, and a lower part immersed in lubricating oil between the wire rod guide rollers on both front and rear sides. A bobbin with a brush, which is rotatably installed, has brushes planted opposite to each other on the inside between the flanges on both sides, and the bottom between the flanges has an outer diameter slightly higher than the wire passage between the front and rear guide rollers. A device for applying lubricating oil to the wire rod that is being drawn.