JPS59145062A - Electrostatic oil applicator for wire material - Google Patents

Abstract

PURPOSE:To maintain a surfactant in an oil reservoir tank purified at all times, while inhibiting the plugging of a nozzle, etc., by recovering a surfactant, in which contaminating substance such as dust adherent onto a wire material has been mixed, with a recovering mechanism. CONSTITUTION:A welding wire 2 is introduced into a space between an ionizer 18 and a convection hood 28 inside the main body 1 of the oil applicator, to form an atomized oil film comprising the very fine particles of a surfactant charged with electricity thereon. Among the particles of the excessive surfactant which have not been applied onto said wire 2, the surfactant in which contaminating substance precipitated on the outer wall of the ionizer 18 and the convection hood 28 has been mixed is let flow downwards along each wall surface, dropped through the oil-permeating hole 21 of an inclined plate 22 and a buffle plate 16 and then recovered in a recovering tank 38. The recovered surfactant in which the contaminating substance has been mixed is purified by a filter 39 and then returned to an oil resevoir tank 5.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an electrostatic oil applicator for forming a thin oil film on the outer peripheral surface of a wire, such as a welding wire.

In recent years, welding wire has been manufactured in the final forming process by electrostatically depositing a thin oil film of oil particles on the outer surface of the wire for purposes such as rust prevention and lubrication to ensure good feeding to the welding machine before being wound onto a winding drum. It is painted by

The reason why a thin oil film is applied using static electricity is that it is difficult to form a thin oil film on the outer peripheral surface of the wire with conventional oil application devices such as passing through fibers impregnated with oil.
When feeding the wire to the welding machine, the frictional resistance with the wire guide body etc. increases, making feeding impossible.Also, if you try to form an even oil film, the amount of oil applied increases, causing damage to the welding machine. There are inconveniences such as oil adhesion to the feed row 2, etc., which causes slip, making it impossible to feed, and an increase in diffusible hydrogen in the weld metal, resulting in poor welding. This is because oil application has the advantage that a uniform thin oil film can be formed with a small amount and only a small amount of oil is consumed.

By the way, since conventional electrostatic lubrication equipment is used by being incorporated into a wire manufacturing line, iron scraps, iron oxide powder, and other dust may adhere to the surface of the wires that are carried into the electrostatic lubrication equipment. Then, this is introduced into the electrostatic oil applicator and mixed with the oil in the device, causing the oil to become dirty and degraded.
Problems such as clogging of the atomizing nozzle for atomization and impurity-containing oil agent being applied to the wire rod result in product defects.

As a result of conducting various experiments regarding the entry route of impurities such as iron scraps and dust, the inventors found that in addition to dust, etc. that adheres to the wire rod and is carried into the main body of the oil applicator, the oil agent in the oil charging section It has been found that carbonized substances mixed into the oil agent promote staining and deterioration of the oil agent.

In addition, the lubricant is most often contaminated by dust attached to the wire near the guide on the carry-in side where the wire is introduced into the lubricating device, and there is almost no contamination of the lubricant from the middle to the carry-out side. confirmed.

In view of the above, an object of the present invention is to provide a novel wire rod electrostatic and lubrication device that can eliminate the disadvantages of the conventional device by recovering impurity-containing oil in the electrostatic lubrication device using a recovery mechanism. It is about providing.

Another object of the present invention is to provide an electrostatic oil applicator equipped with a recovery mechanism capable of recovering all impurity-containing oil.

Still another object of the present invention is to provide an electrostatic oil applicator equipped with a recovery mechanism that separates and collects the impurity-containing oil flowing down from the vicinity of the carry-in guide body from the almost clean oil flowing down from other parts. .

According to the present invention, in an electrostatic oil applicator that applies charged atomized oil particles to a wire rod that is transported at a required speed, the liquid oil agent is coagulated in the lower part of the oil applicator main body. An atomizing nozzle is disposed, and an ionizer is disposed above the atomizing nozzle to charge the mochi-forming oil particles conveyed by the conveying air. It is guided and transported by the unloading guide.

Electrostatic coating of a wire rod, characterized in that a collection mechanism is provided to collect impurity-containing oil particles that are deposited on the wall surface and flow down within the oil applicator body from among the atomized oil particles that have passed through the ionizer. Oil equipment is provided.

Further, according to the present invention, there is provided an electrostatic oil applicator, characterized in that the recovery mechanism is configured to recover all the flowing oil deposited on the wall surface and flowing down within the oil applicator main body. .

Further, according to the present invention, there is provided an electrostatic oil application device, wherein the recovery mechanism is configured to recover only the impurity-containing oil near the carry-in guide.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below based on the five drawings.

FIG. 1 is a longitudinal sectional view showing an embodiment of an electrostatic oil applicator in which the oil recovery mechanism according to the present invention is configured to recover all atomized oil, and FIG. It is a sectional view on the A line.

In the figure (1), welding wire (2) is carried in horizontally (
This is a grounded lubricating device main body that is moved in and out through an Ill guide (3) and an unloading guide (4), and has an oil storage tank (5) containing a liquid lubricant in its lower part.

Each guide body (3) (4) has a guide hole (6) bored in the center, and a sliding slit (7) that communicates with the guide hole (6) and extends to a part of the outer peripheral surface. The left and right side plates (8) and (9) of the oil applicator body (1) have a cylindrical shape.
) are fixed to each.

α1 is a large number of atomizing nozzles arranged in parallel along the front plate OD above the oil storage tank.
5) The liquid oil in the chamber is sucked through the suction strainer (2), and the oil is atomized and sprayed.

00 is a conveying air introduction pipe connected to a blower (not shown), and a flow rate of conveying air proportional to the transfer speed of the welding wire (2) from the blower is supplied into the lubricating device main body (1). will be introduced in (g) is a nototsufuru plate disposed at the upper part of the introduction pipe 0, which extends obliquely from the rear plate (1?) of the oil applicator main body (1) to the front round.

It is regulated so that relatively coarse particles among the oil particles atomized from the atomization nozzle QO are not directly conveyed into the ionizer described later. This Nomuffle board (T) is usually composed of a flat plate, but a breathable board such as a Nonojiching medal may also be used.

(to) is an ionizer disposed on the upper part of the Nonotsufuru board (4) at a required interval, and is an ionizer that is oiled
A horizontal plate ridge fixed to the front plate aη of 1) and having a long hole Ql parallel to the welding wire (2), and an oil hole extending downward from the rear edge and fixed to the rear plate af). The ionizer μs is installed vertically on a base plate Q made up of two inclined plates having an angle Cυ. The oil guide wall (241C24) and both guides 11 (H(2)
4) Ionizer electrodes (251
The atomized oil particles passing between the guide walls are charged by a high voltage applied to the ionizer electrode (c). The atomized oil guide wall C241CI! 4) The interval between the welding wires (2) is gradually narrowed as it goes upward, and a slit-shaped oil particle spout Ce is formed at the upper end of the welding wire (2) in close opposition to the welding wire (2). Both end portions between the guide walls are sealed. Therefore, the oil particles with a coarse particle size are collected and captured in the ionizer (T), and only the charged oil particles with an extremely fine particle size are intensively injected onto the welding wire (2) without leaking to the sides. .

(To) is the upper part of the ionizer (To) and the welding wire (2
) The convection hood is arranged to cover the oil applicator body (1), and has an inverted U-shape in cross section, with the upper center of the hood covering the oil applicator body (1).
A space is attached to the bottom surface of the mounting plate 0■ which houses the demister-cA arranged on the top plate Q (support), and the lower edge of the rain is located between the atomizing oil guide wall (241) and the inclined wall. It is inclined to widen to form an oil particle passageway (A).

(2) is a follow-up electrode stretched above and parallel to the welding wire (2) in the convection hood (toward), and when the same high voltage as that of the ionizer sNh is applied to the welding wire (2), This is for depositing convective oil particles onto the welding wire (2). The hood is an inverted V-shaped hood that prevents the oil disposed at the attachment part of the driving electrode (to) from dripping onto the welding wire (2).

In FIGS. 1 and 2, (G) is a recovery mechanism for recovering impurity-containing oil, which includes an oil storage tank (5) and an atomizing nozzle Q.
t) is hermetically partitioned by a horizontal partition (2),
The upper part of this horizontal bulkhead (b) is the collection tank (toward) for the falling oil.
It is said that The recovery tank (to) is equipped with an atomization nozzle αQ75.
1) The relatively large-diameter particles of the sprayed atomized oil particles adhere to the rear plate (b) and flow down; when the atomized oil particles are conveyed by the conveying air, the oil applicator body (1)
The oil particles that adhere to and flow down the inner walls of the ionizer, the surface of the full plate (g), the inner surface of the ionizer (to), etc.; All of the flowing oil deposited on the inner wall of the main body (1), the outer surface of the ionizer (g), the inner and outer surfaces of the convection hood (to), and the like are collected. The oil collected in the recovery tank (2) is purified through a circulation path (2) equipped with a filter and a pump (7), and returned to the oil storage tank (5).

2) is a vent hole formed in the upper part of the oil storage tank (5) and having a filter for taking in outside air.

Next, the operation of the above device of the present invention will be explained. First, insert the welding wire (2) into the lubricating device main body (1) by inserting it into the carry-in guide body (
3) and the unloading side guide body (4).

Next, compressed air is supplied to each atomization nozzle αQ to atomize the oil agent into fine particles, and at the same time, conveyance air is supplied into the oil applicator main body (1) through the conveyance air introduction pipe αQ, and at the same time, the ionizer electrode ( A required high voltage is applied to each of the following electrodes (c) and (to) K.

When the welding wire (2) is transferred at the required speed in this state, relatively fine particles among the oil particles atomized by the atomizing nozzle a1 are transferred to the conveying air introduced from the conveying air introduction pipe α. And the compressed air introduced through the atomization nozzle αO is used to blow the tuffle plate (g) and the oil application body (
1) is introduced into the ionizer through the passage between the front plates αη and the elongated hole Q.

The relatively fine oil particles introduced into the ionizer (2) are uniformly charged by the ionizer electrode (3), and some are collected on the atomized oil guide wall 014).

The ultrafine oil particles that remained uncollected are then flowed from the spout (to) between the atomizing oil guide walls (2) to the welding wire (
2), and together with the action of the chasing electrode, it is efficiently and uniformly deposited on the welding wire (2), forming an extremely thin oil film on the welding wire (2).

Among the charged oil particles injected from the ionizer (to), the charged oil particles that remain without being applied to the welding wire (2) are introduced into the convection hood (c) and are once transported inside the convection hood by the conveying airflow. After rising, it descends again along the inner wall toward the welding wire (2). At this time, the oil particles are recharged by the driving electrode (to), and due to these descending charged particles, the density of the charged oil particles near the welding wire (2) is increased and stably maintained at the required value. , welding wire (
2) Promote and encourage the deposition of charged oil particles on the upper surface side.

Thereafter, excess oil particles that did not settle on the welding wire (2) are passed through the passage () and are passed through the inner wall of the oil applicator main body (1).

Excluding the amount deposited on the outer wall of the ionizer (7) and the convection 7-d (C), the waste is discharged to an external discharge treatment device (not shown) through a demister.

The oil mixed with impurities deposited on each wall surface in the oil applicator main body (1) flows down each wall surface and drips through the oil passage hole c2B of the inclined plate (2) and the nototsufuru plate (4). and collected in the collection tank (to). The recovery tank (to) also collects the oil deposited on the inner surface of the ionizer (to) and the atomized oil atomized by the atomization nozzle (to) that collides with the rear plate αη and flows down. The impurity-containing oil collected in the recovery tank (to) is purified by the filter (to) one after another or every time a required amount is accumulated, and returned to the oil storage tank (5).

According to the above-described apparatus of the present invention, since all of the impurity-containing oil mixed with dust attached to the wire is recovered by the recovery mechanism, it is possible to completely prevent impurities from entering the oil storage tank. Therefore, the oil in the oil storage tank can be maintained in a clean state for a long period of time, and contamination and deterioration of the oil, clogging of the atomizing nozzle), product defects, etc. can be prevented.

Next, another embodiment of the present invention will be described based on the drawings.

FIG. 5 shows that the oil recovery mechanism according to the present invention is carried in at In11.
A vertical cross-sectional view showing an example of an electrostatic oil applicator configured to collect only impurity-containing oil near the guide body,
FIG. 4 is a sectional view taken along line A-A. In the figure, parts corresponding to the configurations in FIGS. 1 and 2 are denoted by the same reference numerals, and detailed description thereof will be omitted.

According to this example, the recovery mechanism (to) has a recovery tank (■) formed by partitioning the left side of the oil tank (5), that is, the entrance side of the welding wire (2), by a bulkhead (goods), and a partition wall (goods). It consists of an inclined plate extending from the upper edge of ) to the upper right corner and facing the lower surface of the front edge of the nototsufuru plate (to). Collection tank■
Inside, dust adhering to the welding wire (2) near the carry-in guide body (3) flows down from the floating position along the inner wall of the oil applicator main body (1) and the outer wall of the ionizer (to).

Furthermore, impurity-containing oil that drips down to the oil storage tank (5) through the oil passage hole Qυ of the inclined plate along the upper surface of the inclined plate is collected, and is filtered as necessary. The oil is returned to the oil storage tank (5) through a circulation path (b) equipped with a pipe and a pump (2), or is discharged to the outside through a drain valve (2).

According to the above-described apparatus of the present invention, since the impurity-contaminated oil mixed with dust adhering to the wire rod is separated from other almost clean oils and collected by the collection mechanism, impurities are not mixed into the oil storage tank. Therefore, the oil in the oil storage tank can be maintained in a clean state for a long period of time, preventing contamination and deterioration of the oil, clogging of the nozzle, product defects, etc. be able to.

In each of the above embodiments, only a part of the embodiments of the present invention have been described], and the separation and recovery of the impurity-containing oil agent is carried out on the left side of the nototsufuru plate (g) as shown in FIGS. 5 and 6. There is a collection tank (c) on the lower surface of the front edge of the section, corresponding to @4.

For example, form a gutter @ (47'), and these gutter @'t)
The impurity-containing oil collected in (47') is led out of the oil applicator main body (1), and is transferred to the oil storage tank (5) through a circulation path equipped with a filter (to) and pump (2) as necessary. It is also possible to return the inclined plate (23 oil passage hole (21
) can be omitted and the upper surface side of the inclined plate (24) can be used as a recovery tank.Furthermore, the horizontal plate (E) can be inclined in the same way as the inclined plate (■), and recovery tanks can be installed on both sides of the ionizer (to). can also be formed.

Furthermore, the installation position of the oil recovery mechanism in the present invention is not limited to the installation positions of the above-mentioned embodiments, but can be selected at any position within the oil application device, and the oil collection mechanism can be installed in multiple stages. It may be fixed, or it may be detachable.

Further, the present invention is applicable not only to welding wire but also to forming an oil film on any other wire rod.

As described above, according to the present invention, since the impurity-containing oil mixed with dust attached to the wire is collected by the collection mechanism, it is possible to prevent impurities from entering the oil storage tank as much as possible. Therefore, the oil in the oil storage tank can be kept clean for a long period of time, and contamination of the oil can be avoided.
It has the effect of preventing deterioration, clogging of the atomizing nozzle, product defects, etc.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing an example of the device of the present invention, FIG. 2 is a sectional view on the person-entry line, and FIGS. 3 and 4 are sectional views showing other embodiments of the device of the present invention. FIGS. 5 and 6 are sectional views showing still another embodiment of the device of the present invention. (Misaki...Oil applicator body, (2)...Welding wire, (
3)...Introduction side guide body, (4)...Export side guide body,
(5)...oil storage tank, 00...atomization nozzle, (g)...
...Ionizer, (to)...Recovery mechanism.

Claims (1)

[Claims] (υ In an electrostatic lubricating device that applies charged atomized lubricant particles to a wire rod that is transported at a required speed, a liquid lubricant is atomized in the lower part of the lubricating device main body. An atomizing nozzle is disposed, and an ionizer is disposed above the atomizing nozzle to charge the atomized oil particles conveyed by the conveying air,
Opposing the ionizer, the wire rod is guided and transferred by an inlet guide member and an outlet guide member, and some of the atomized oil particles that have passed through the ionizer are deposited on the wall surface within the oil application main body. An electrostatic lubrication device for wire rods, which is equipped with a collection mechanism for collecting impurity-containing oil flowing down. (2) The device according to claim 1, characterized in that the collection mechanism is configured to collect all the flowing oil deposited on the wall surface and flowing down within the oil supply vending body.