JPS588759Y2 - Feeder machine for wire inoculation - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a feeder machine that supplies an inoculating wire coated with an iron tape with an inoculant such as Ca or Mg to a molten metal such as cast iron.

Conventionally, devices for driving and supplying wire rods with a diameter of 1rrrrrrL to 10mm have been developed for electric wires and welding rods.
There were the following problems when using this as a feeder for an inoculant wire for supplying inoculant powder to molten metal by winding it with an iron tape.

That is, as shown in FIG. 1, the electric wire feeder has a drum 1' and a feeder main body 2' that are separated and is large in size, so the installation area is large, making it difficult to work and move.

In the welding rod feeder, the drum itself is miniaturized because the wire is extremely thin and flexible, but the inoculating wire is coated with iron tape and has high rigidity, so it is wound around the drum of the welding rod feeder. Forcing the curvature of the drum deforms the wire, causing the wound ends of the iron tape to open and the inoculating powder to spill out.

The object of the present invention is to provide a feeder machine for wire inoculation that eliminates these problems.

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 2, a drum 1 around which an inoculation wire W is wound and which serves as a supply source for the inoculation wire W is integrally attached to one side of a feeder main body 2. As shown in FIG.

An inoculation wire drive unit 3 is provided at the top of the feeder body 2, and the distance t between the drum 1 and the pinch roller 3a that drives the wire W of the inoculation wire drive unit 3 is longer than the drum 1.
is set within four times the radius of curvature r, that is, t≦4r.

The inoculation wire drive unit 3 includes two pairs of pinch rollers 3a (see FIGS. 3 and 4) and a pinch roller 3a that apply driving force to the inoculation wire W by pinching and rotating the inoculation wire W. It is composed of a reduction gear motor 3b that provides rotational force.

One of the pair of pinch rollers 3a is rotatably fixed to the pinch roller support device 3c, while the other pinch roller is movable forward and backward with respect to the one pinch roller. Both ends of the shaft are biased toward the inoculation wire by springs 3d.

(See Figure 3) Also, the inoculating wire W of the pinch roller 3a
A V-groove is provided over the entire circumference on the surface in contact with.

A guide pipe 4 for inserting and guiding the inoculation wire W is provided on the drum 1 side of the pinch roller 3a, and a guide pipe 4 is provided on the inoculation wire discharge side of the pinch roller 3a to guide the inoculation wire W into the molten metal. A discharge guide 5 is provided.

6 is a control box for supplying power to and controlling the inoculation wire drive unit.

In FIG. 1, in order to easily understand the feeding state of the inoculation wire W, one inoculation wire W is shown to be fed by a pair of pinch rollers 3a, 3a, but the pinch rollers 3a, The pair 3a is actually as shown in Figure 5,
A plurality of inoculation wires W are arranged in parallel and are configured to simultaneously supply a plurality of inoculation wires W.

In the wire inoculation feeder machine described above,
The inoculation wire W wound around the drum 1 is connected to the guide pipe 4
is guided to the pinch roller 3a, and the pinch roller 3
It is driven by the rotation of a and is supplied into the molten metal through the discharge guide 5.

In this case, since the distance between the pinch roller 3a and the drum 1 is within four times the radius of curvature of the drum 10, the inoculation wire W has enough of the curls left when it was wound around the drum 1 and is not excessively curled. The wound end of the iron tape of the inoculating wire W does not open due to straightening, and the inoculant inside does not spill out during supply.

In driving the pinch roller 3a, since the pinch roller 3a is biased by a spring, the pinch pressure can be adjusted and the inoculation wire W can be driven without being pressed too much.

Furthermore, since the circumferential surface of the pinch roller 3a is grooved,
The inoculating wire W is not flattened, and deformation of the wire due to flattening, and furthermore, prevention of dropping of the inoculant.

Since a device in which a plurality of pairs of pinch rollers 3a are arranged side by side is used, by selecting the number of pinch rollers 3a arranged side by side, it is possible to insert the required amount of inoculant deep into the molten metal in ladle 1. can.

In other words, in order to apply only the necessary amount of additive to the molten metal with a single inoculation wire, the driving speed of the inoculation wire must be adjusted to prevent the inoculation effect that progresses during addition from disappearing and improve the yield of Ca dissolution. must be increased as much as possible to obtain the required amount, but if the speed is too high, the tip of the inoculating wire W will reach the bottom of the ladle before the iron tape melts, and no further This causes the inconvenience that the driving speed cannot be increased.

In such a case, by using a plurality of pairs of pinch rollers 3a, the driving speed can be substantially reduced and optimum addition can be carried out.

Therefore, when using the feeder machine for wire inoculation of the present invention, the following various effects can be obtained.

That is, by providing the drum integrally with the feeder main body, it is possible to achieve miniaturization, which is advantageous in terms of installation space and work.

In addition, the distance between the drum and the inoculation wire drive unit is within four times the drum radius, the pinch roller is spring biased, and the pinch roller is provided with a groove, which deforms the cross section of the inoculation wire. It is possible to prevent the inoculant from spilling out during driving.

Moreover, multiple pairs of pinch rollers make it possible to supply multiple inoculating wires at the same time. By selecting the number of inoculating wires to be supplied, the required amount of inoculant can be supplied throughout the molten metal in a short time. can.

■ When the inoculating wire is fed into the molten metal at a speed that is fast enough so that the inoculating effect is not lost, and at a speed that does not reach the bottom of the ladle before the inoculating wire is melted, 1 Even if it is not possible to supply the required amount of inoculant into the molten metal using a regular inoculation wire, by simultaneously feeding multiple inoculation wires, the necessary amount of inoculant can be ensured into the molten metal. and can be supplied effectively.

It has the following effects.

[Brief explanation of the drawing]

Fig. 1 is a schematic front view of a conventional electric wire feeder, Fig. 2 is a perspective view showing only a pair of pinch rollers and shows the principle of the feeder machine for wire inoculation of the present invention, and Fig. 3 is Fig. 2. FIG. 4 is a partial front view of the pinch roller portion of FIG. 3, and FIG. 5 is a partial front view of the actual pinch roller portion used in the present invention. 1...Drum, 2...Feeder body,
3... Inoculation wire drive section, 3a...
pinch roller.

Claims (1)

[Scope of utility model registration request] A plurality of pairs of pinch rollers each driving a plurality of inoculation wires wound around a drum are supported in parallel on a feeder main body, and the supply drum for the inoculation wire is connected to the feeder main body, and the drum and the pinch roller The pinch roller is integrally and rotatably mounted at a position where the distance between the pinch roller and the inoculating wire is within four times the radius of curvature of the drum, and a spring is applied in the direction of the inoculating wire that clamps the pinch roller, and a V groove is provided on the circumferential surface of the inoculating wire. Wire inoculation feeder machine 0 characterized by