JPS6024460Y2 - Liquid coating device for welding wire surface - Google Patents

Description

[Detailed description of the invention] This invention is designed to prevent the wire surface from slipping in advance when winding the welding steel wire used for arc welding such as inert gas shielded arc welding, carbon dioxide gas shielded arc welding, and submerged arc welding onto a bobbin, spool, etc. This relates to a device for applying liquid agents such as anti-rust oil to surfaces.

In general, small-diameter welding wires are used with a liquid agent such as a rust preventive agent, which has functions such as lubrication and rust prevention, adhered to the surface thereof.

That is, if the arc is unstable during welding, the welding result will be adversely affected.

In particular, if the wire feeding motor and the welding torch have a long or bent wire tube, which increases the feeding resistance, this will significantly hinder the wire feeding and cause the arc to become extremely unstable. In extreme cases, it may even be impossible to continue welding.

In addition, welding wires are prone to discoloration and rust, which deteriorates welding workability such as feedability and arc stability during welding, as well as mechanical properties such as impact value of the welded part.

In order to solve this problem and improve the feedability and rust resistance of the welding wire, welding wires having various liquid agents such as rust preventives adhered to the surface of the wires have been used.

However, the current situation is that a sufficient device for applying a liquid agent to the surface of a welding wire has not yet been developed.

2. Description of the Related Art Conventionally, an apparatus shown in FIGS. 1 and 2 has been known as an apparatus for applying a liquid agent to the surface of a continuously running welding wire.

In Fig. 1, a is a cut side view thereof, and b is an I-I of a.
According to the apparatus shown in FIG.
A continuously running welding wire 1 is sandwiched between felt materials 2, and a liquid agent 3 is continuously dripped into the felt material 2 from a liquid storage container located above the felt material, whereby it permeates into the felt material 2. A liquid agent is applied to the surface of the welding wire 1 that runs while being sandwiched between felt materials 2 (Utility Model No. 58-8)
No. 1626, Utility Model Application Publication No. 1983-69161, etc.).

In addition, according to the device whose cut side view is shown in FIG. 2, one end of the welding wire 1 is immersed in a liquid 3 in a liquid storage container, and a continuously running welding wire 1 is held between a felt material 2 impregnated with the liquid and the liquid is applied to the surface of the wire. (Japanese Patent Application Laid-Open No. 53-144942)
.

Furthermore, according to the apparatus shown in FIG. 3, two pieces of felt are continuously moved by a felt moving roller 5, a guide member 6, etc., with a part of the felt being always impregnated with the liquid 3 in the liquid storage container. 2 is clamped and pressurized by felt clamping plates 4, and the wire 1 is continuously run in the clamped and pressurized position to apply a liquid agent (Japanese Patent Laid-Open No. 53-14494)
21-).

However, according to the conventional applicator shown in FIGS. 1 and 2, the felt material 2 in the portion that directly contacts the continuously running welding wire 1 is severely soiled and damaged, and the dirt attached to the felt material 2 is easily removed. Conversely, it may stain the wire or clog the felt material, making it difficult to gradually reduce the amount of liquid applied and achieve a uniform amount of application. Interferes with liquid application by contact.

For this reason, it is necessary to frequently replace the felt material, which requires time and effort for the workers and increases costs.

The coating device shown in FIG. 3 was developed in view of the drawbacks of the conventional devices, but it has serious drawbacks in actual use.

That is, the device moves while holding the continuously running wire 1 between the felt material 2, but as the felt material wears out as described above, grooves are formed in the felt material along the wire 1, and as a result, The felt 2 must be moved with the pressing force of the felt clamping plate 4 released, otherwise smooth movement will actually be impossible.

Without pressurizing force, it would be difficult to apply uniformly, and the intended purpose would be completely unachievable, and the practicality of the apparatus of this example would be negligible.

The present invention eliminates the above-mentioned drawbacks of the conventional technology, and makes it possible to constantly and uniformly apply a predetermined amount of liquid to a continuously running welding wire, and also enables stable application without requiring manual labor over a long period of time. This is a device for applying a liquid to the surface of a welding wire, which can be easily attached to a welding wire winding equipment.

That is, the present invention is a device for applying a liquid such as anti-corrosion oil to the surface of a welding wire, and includes a liquid-impregnated felt that clamps the running wire, a clamping plate that clamps the felt under pressure, and a pressurizing device. This is a liquid coating device for welding wire surfaces, which includes a linear head mechanism that moves a device made up of the felt, a clamping plate, and a pressure device in a direction of 90 degrees with respect to the wire running direction.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in more detail below with reference to the drawings.

4, 5, and 6 are a plan view, a front view, and a side view of the apparatus according to the present invention.

In the figure, 1 is a welding wire to which a liquid is applied, 2 is a liquid-impregnated felt that holds the wire 1 from above and below, and 4.
Reference numeral 4' indicates upper and lower felt clamping plates that sandwich the felt 2 from above and below, and 19 indicates an air cylinder (see FIG. 9 is a bracket fixed on the upper felt holding plate 4, 11 is a shaft rotatably supported on the bracket 9, and 10 is a shaft 11 between the brackets 9. A cylinder lever 8 has one end fixedly attached to the rod 19' of the air cylinder 19 and the other end rotatably engaged with the rod 19' of the air cylinder 19, and one end of each cylinder lever 8 is fixedly attached to both ends of the shaft 11. A lowering arm 17 is a movable base on which the lower felt holding plate 4' is placed and fixed, 7 is a stopper fixed to both ends of the movable base 17, and 15 is the other end of the lowering arm. A pivot shaft rotatably engages with the metal 7, 12 is a wheel rotatably supported at the four corners of the movable base 17, and 22 is a pivot shaft that rotatably engages the movable base 17 through the wheels 12 at 90° with respect to the wire running direction. 18 is a linear head fixed to the lower surface of the fixed pedestal 16, 20 is a motor, and 21 is fixed to one end of the movable pedestal 17 via the arm 14. This is a rack bar that engages with the linear head 18.

To apply a liquid to a welding wire using this device, one upper and lower felt 2 each impregnated with an appropriate amount of liquid are set on felt clamping plates 4 and 4'.

The wire 1 is passed between the upper and lower felts 2.

After that, apply air pressure to the air cylinder 19 (rod 1
9' moves in direction A), transmits the pressure to the shaft 11 via the cylinder lever 10, and pressurizes the felt clamping plates 4 and 4' by the interaction of the felt lowering arm 8, the stopper 7, and the bracket 9. A clamping force is generated, the wire is passed through continuously, and coating is started.

After a predetermined time automatically set by a timer or the like, that is, after an appropriate time set after taking into account the clogging of the felt material 2 and the gradual decrease in the amount of application, the wire continues to be passed.
Felt 2, felt clamping board 4. 4', the entire movable pedestal 17 on which the air cylinder 19 and the like are mounted is slightly moved in either the left or right direction with respect to the fixed pedestal 16.

The movement is performed by motor 2 for a preset operating time.
This is done by rotating the rack bar 21, which is driven by the linear head 18, by a predetermined amount.

In this example, the rotation time of the motor 20 was set by adjusting the rotation time of the motor 20 to be 37 rrIn in order to set the amount of movement so as not to excessively deflect the direction of movement of the wire.

Immediately after this, the pressurization of the air cylinder 19 is momentarily released by a separately provided electric sequence circuit (the rond 19' is
give a signal to move in the direction).

In this embodiment, the pressurization is released only during the O0 period.

Since a tensile force is applied to the wire 1 when the wire is threaded, when the pressure is released, the wire 1, whose traveling path had been bent due to the tensile force as the felt 2 moved, is bent. It instantaneously returns to the normal position, and coating of the felt 2 at the new coating position is started.

Moreover, the instantaneous release of pressure on the felt does not cause the release-protecting upper felt to completely separate from the wire, but only the pressure is released, so it has almost no adverse effect on the coating process itself.

FIG. 7 schematically shows the positional relationship and operation of the felt 2 and the wire 1 described above.

A shows the normal application state, B shows the state immediately after the felt has moved, and C shows the re-pressurized state after instantaneous pressure release.

With the device of the present invention, by repeating the above-mentioned operations in sequence, it is possible to apply a stable and uniform solution to the treated welding wire as soon as one set of felts has finished its use. There is no variation in performance, and coating work continues automatically without requiring the operator's hands each time.

In the above embodiments, an example is described in which the wire is passed continuously, but for example, when 20 kg is wound onto a spool and the running of the wire is temporarily stopped, the pressure clamping of the felt may be performed during the stopping time. Needless to say, an electric circuit may be constructed such that after releasing the felt and completely separating the felt from the wire, the movable base is moved and the pressure is clamped again.

Further, in the above embodiment, a pressurizing device that pressurizes the clamping plate with an air cylinder via a link mechanism has been exemplified, but it goes without saying that the present invention can be practiced with other suitable pressurizing means instead.

According to the present invention as described above, a predetermined amount of a liquid agent such as a rust preventive agent can always be uniformly and stably applied to the surface of a welding wire.

The welding wire manufactured using the present invention can exhibit sufficient rust resistance and feedability due to the functions of the liquid agent such as rust preventive oil applied to the surface of the welding wire, and the present invention is practical. Great value.

[Brief explanation of the drawing]

1 to 3 are explanatory diagrams of a conventional liquid agent applicator, in which FIG. The figure is a perspective view. 4 to 6 show an embodiment of the device of the present invention.
The figure is a plan view, FIG. 5 is a front view, and FIG. 6 is a side view. FIGS. 7A, B, and C are explanatory diagrams schematically showing the positional relationship and angular movement of the felt and the wire in the device of the present invention. In the figure, 1 is welding wire, 2 is felt, 3 is liquid, 4
, 4' is an upper and lower felt clamping plate, 7 is a clasp, 8 is a pressing arm,
9 is the bracket, 10 is the cylinder lever, 11 is the shaft, 1
2 is a wheel, 13 is an overhanging frame, 14 is an arm, 15 is a pivot, 16 is a fixed pedestal, 17 is a movable pedestal, 18 is a linear head, 19 is an air cylinder, 20 is a motor, 21 is a rack par, and 22 is a guide rail. .

Claims (1)

[Scope of Claim for Utility Model Registration] A device for applying a liquid such as anti-corrosion oil to the surface of a welding wire, which comprises a liquid-impregnated felt that clamps the running wire, a clamping plate that clamps the felt under pressure, and a A device for applying a liquid to the surface of a welding wire, comprising a pressure device, and a linear head mechanism that moves the device made up of the felt, a clamping plate, and the pressure device in a direction of 90 degrees with respect to the wire running direction.