JPS5867875A - Treatment of looped steel wire material while conveying it - Google Patents

Abstract

PURPOSE:To bring a looped steel wire material in uniform contact with treating liquid and to inhibit the formation of unevenness in a treated state, in treating the looped steel wire material with the liquid while carrying it with a conveyer, by vertically vibrating the chain rail of the conveyer to apply vibration to the steel wire material. CONSTITUTION:A looped wire material W is pickled with acid-pickling liquid 3 in a cell 1 for treatment such as acid-pickling, while being carried with a chain conveyer 2. A chain rail 4 for supporting the chain conveyer 2 is hence vertically vibrated at the outlet side 4' by the rotation of a sprocket 5, and the vibration is transmitted through the chain conveyer 2 to the looped steel wire material W. The acid-pickling liquid comes in sufficient contact with a loop-overlapping part, too, because of the vibration, so that the whole of the looped steel wire material is uniformly acid-pickled without the formation of unevenness in acid-pickling. This method is effectively applicable to treatment for plating the looped steel wire material, too.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for transporting a looped wire rod, in which the looped steel wire rod is placed horizontally and transported by a conveyor, and then subjected to treatments such as pickling, water washing, and plating.

A well-known method is to transport wire rods such as steel wire rods for welding on a conveyor in a non-concentric polymerization loop, and then subject the wire rods to surface treatments such as pickling and plating. However, since loop-shaped wire rods have dense overlapping parts on the left and right sides with respect to the advancing direction,
The treatment liquid does not sufficiently penetrate into that area, and the treatment reaction does not proceed or is delayed, and the treatment tends to be insufficient compared to other areas. As a result, there was a problem that uniform surface treatment could not be performed.

For this reason, there is a conventional method in which the speed of the conveyor is changed when the wire is transferred from one conveyor to another, and the positions of the rings of the wire are slightly shifted from each other. Since it is necessary to provide a dipping tank, the length of the tank becomes long, and in particular, since two conveyors must be used for delivery within the dipping tank, the apparatus becomes complicated. In addition, there is a method in which the treatment liquid is made to flow and the reaction rate is adjusted, so that the treatment liquid is spread over nine overlapping parts of the wire.

However, in these methods, the overlapping parts at both ends of the looped steel wire are in the same position and part from beginning to end during the treatment, so pickling and pre-plating treatment are required.

In the process of plating, the treatment liquid does not sufficiently penetrate into the overlapping area, and the treatment reaction tends to be insufficient compared to the front and rear areas where the treatment reaction does not proceed.

As a result, scale remains during pickling, and defects such as non-plating, thinning, and thickening occur during plating treatment, making it easy for treated wire rods to rust and cause uneven color tone, which leads to quality deterioration of the wire rods and plating. During wire drawing after processing, the die is rapidly worn and the die tends to become rough.

The present invention solves the above-mentioned problems in the transportation treatment of loop-shaped wire rods in processing liquid, eliminates uneven treatment due to overlapping wire rods, enables uniform surface treatment, and can be easily carried out. The object of the present invention is to provide a method for transporting and processing steel wire rods.

However, what is the gist of the present invention to achieve the above object? In the method of processing while being placed horizontally and conveyed by a conveyor, the chain rail of the conveyor is vibrated vertically, and the vibration is transmitted to the loose steel wire through the entire chain, thereby conveying the looped steel wire while vibrating vertically. It's about processing.

By vertically vibrating the chain rail of the conveyor that conveys the loop-shaped steel wire, the loop-shaped steel wire is vibrated vertically.
As a result, the lifting phenomenon of the loops is repeated, and the overlapping portions of the loops are not loosened or shifted, and the treatment liquid is spread throughout the loop, making it possible to uniformly treat the looped steel wire.

Hereinafter, specific examples for carrying out the present invention will be described based on the drawings. Although the illustrated example shows a wire pickling treatment apparatus, it goes without saying that the present invention can also be applied to water washing, cooling, plating, etc. in addition to pickling.

FIG. 1(A) is a plan view of the pickling treatment equipment, and FIG. 1(O) is a cross-sectional side view. As shown in the figure, the pickling tank 1 is composed of an inner tank 1a and an outer tank 1b, and is filled with pickling liquid 3. In the longitudinal direction of the inner tank 1a of the pickling tank 1, chain conveyors 2 for conveying loop-shaped steel wire through the pickling liquid 3 are disposed in two rows, and the inlet and outlet sides of the conveyor 2 are arranged in two rows. The side is connected with other conveyors. The loop-shaped wire W is conveyed through the pickling liquid 3 in the direction of the arrow by the chain conveyor 2 and is pickled.

The chain conveyor 2 is provided in an endless manner on the sprocket 5 on the drive shaft 6 side and the sprocket 5' on the driven shaft 6' side, and the upper chain conveyor used for conveying the wire rod W is connected to the chain rail 4 provided on the lower part. Supported by The chain rail 4 is provided so as to be rotatable around the wire entrance part 4, or if the chain rail is a flexible rail, the entry part f is fixed and the exit part 4 is fixed.
′ is configured to be movable up and down. Then, the outlet part 4' of the chain rail is engaged with the sprocket 5, and this
The rotation of the sprocket causes the output side 4' to vibrate up and down, and this vibration is transmitted to the wire W via the chain conveyor 2. This situation will be explained with reference to FIGS. 2(A) and 2(O)K, which are enlarged views of the outlet side portion 4' of the chain rail.

The chain rail 4 is supported at its wire outlet side by a rail stopper 7 fixed to the wall of the inner tank 1a, and a guide roller 8 is attached below the tip. The shaft 9 of the guide roller 8 is common to the guide rollers of the two chain rails, so that the two chain rails vibrate vertically as a unit.

That is, by intermittently lifting the guide rollers 8 of the chain rail 4 by a plurality of teeth (seven in the figure) of the tin rocket 5 rotated by the drive shaft 6, vertical vibration is given to the chain rail A; 4 and the chain conveyor 2. The structure is as follows. For this purpose, the positional relationship between the teeth of the tin rocket 5 and the guide roller 8 of the chain rail 4 is as shown in FIG. 2 (a) when the guide roller 8 is supported by the rail stopper 7. When the tin rocket 5 rotates, the teeth of the sprocket lift up the guide roller 8 as shown in FIG. 2 (b). The number of vibrations and the amplitude of the vertical vibration of the chain rail 4 due to the rotation of the tin rocket 5 are determined by the size, number of teeth, and rotational speed of the sprocket.

With the above configuration, the loose steel wire W transported by the chain conveyor 2 in the direction of the arrow shown in FIG.
Since the pickling liquid 3 in A is vibrated up and down and the overlapping parts are constantly shifted, the parts that were not in sufficient contact with the pickling liquid come into good contact with the pickling liquid. Therefore, each wire ring is generally uniformly pickled, and problems such as uneven pickling are eliminated.

The soil and bottom vibration means of the conveyor are limited to the above specific example.
The chain rail may be vibrated up and down by a vibration motor, or an eccentric gear may be provided at the center of the conveyor.

Example Table 1 shows the pickling condition of a loop-shaped steel wire rod when a steel wire rod for welding is pickled using the apparatus shown in FIGS. This is a table showing the cases. The following conditions are for the method of the present invention, but the conditions for the conventional method are that there is no vertical vibration, and the conveyance speed is 3.3°7. , The pickling solution temperature was 60°C, and the other conditions were the same as those below.

(Pickling conditions) Wire to be treated Steel wire for welding Wire diameter: 2.4mm Loop diameter: 800mm Loop pitch: 10~2° Conveying speed: 5.0ml Pickling solution Hydrochloric acid: 18ml, 40°C Immersion time
90sec.

Table 1 Note: ■ ◎ indicates that the scale has been removed evenly and completely,
The mark indicates the surface condition where school remains at the overlapped portion of the wire, and ◎ and △ indicate the middle stage wI of the ◎ and X marks.

■The numbers indicate the frequency with which each rank appears.

As is clear from the above table, when the method of the present invention was used, the unevenness of pickling was significantly reduced compared to that of the conventional method, and there was no remaining scale.

In addition, in the method of the present invention, the conveyance speed is 5.0 m/#I, which is higher than that of the conventional method (3,3'% = )K, and the temperature of the pickling solution is 40°C, compared to the conventional method (60°C). The wire was treated at a low temperature, but the treatment was carried out without any problems and a treated wire with a good surface condition was obtained.

As explained above, in the present invention, simply by vibrating the loop-shaped steel wire up and down, the overlapping part of the loop-shaped steel wire can be shifted, and the treatment liquid can be spread over the entire wire, thereby substantially reducing treatment unevenness. It can be eliminated. As a result, the quality of the wire can be greatly improved, so the industrial value of the present invention is extremely large.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram showing a specific example of a pickling treatment apparatus to which the method of the present invention is applied, in which (a) is a plan view, (b) is a cross-sectional side view, and Figs. It is a figure which showed the enlarged view of the exit side part of the chain rail in a figure. 1... Pickling tank, 1a... Pickling inner tank, 1b... Pickling outer tank, 2 chain conveyor, 3... H washing liquid, 4...
Chain rail, 5.5'...Sprocket, 8...
・Guide roller, W...Loop-shaped steel wire rod. Patent applicant Representative patent attorney Tomoyuki Yafuki (and 1 other person) Figure 1 C-a) Figure 2 (A) (B) 414-

Claims (1)

[Claims] In a method in which a loop-shaped steel wire is processed while being placed horizontally and transported by a conveyor, the loop-shaped steel wire is processed by vertically vibrating the chain rail of the conveyor and transmitting the vibration to the loop-shaped steel wire through the chain. A method for conveying a loop-shaped steel wire rod by a conveyor, characterized by conveying the rod while vertically vibrating it.