JPS6215611B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for transporting a continuous ring-shaped wire while immersing it in a processing tank.

The properties of the wire rod product, such as the surface texture and uniformity of the microstructure of the hot-rolled wire rod, depend on the uniformity and cooling rate of the wire rod after rolling. However, most conventional cooling methods employ air cooling, and this method does not provide sufficient cooling uniformity and a desired cooling rate. In particular, hard steel wire rods, which are required to have uniform quality, have recently tended to have higher tensile strength and larger diameters, and air-cooling methods lack sufficient cooling capacity to achieve the desired heat treatment effect. For this reason, recent attempts have been made to increase the tension and diameter by using methods such as cooling by mixing mist with air or cooling in a salt bath.

By the way, as a conventional device for conveying a continuous ring-shaped wire rod through a processing tank such as a salt bath or a washing tank, a plurality of horizontal rollers are arranged in the processing tank, and each roller shaft is connected to the side wall of the tank. The bearings were provided outside the tank by penetrating the rollers, or each roller bearing was provided inside the tank. However, in the former method, liquid easily leaks from the side wall of the shaft penetrating portion, and in the latter method, the bearing is easily damaged by the liquid, which is particularly problematic when the liquid is salt, acid, or the like.

The purpose of the present invention is to solve the above-mentioned problems in such a conveying device and to provide a device having excellent functions and effects. The apparatus is characterized in that a plurality of roller shafts are supported so as to look into the processing tank, a cone roller is fixed to the lower part of each roller shaft, and the upper part of the roller shaft is connected to a drive source. .

The apparatus of the present invention will be explained in detail below with reference to embodiments shown in the drawings.

Figure 1 is a plan view of this device, Figure 2 is A of Figure 1.
-A sectional view, and FIG. 3 shows a BB sectional view of FIG. A roller shaft 3 is supported on the side walls 1a and 1b of the liquid tank 1 via a bearing 4 so as to look into the tank. A cone roller 5 immersed in a cooling liquid is fixed to the lower part of the roller shaft, and a gear 6 is fixed to the upper part. Reference numeral 7 denotes a drive source made of, for example, an electric motor, which is fixed on the upper surface of the side wall, and the worm gear 9 provided on the drive shaft 8 of the drive source meshes with the gear 6, so that the rotation of the drive shaft 8 is caused by a cone roller. 5. In this device, a plurality of such cone rollers are arranged on the side walls 1a and 1b in the wire transport direction. Figures 1 and 3
In the figure, 10 indicates the wire transport direction.

Next, the operating method of this device will be explained. In FIGS. 1 and 3, a wire S that has been hot-rolled and formed into a continuous ring shape by a winder 11 is received by an inlet conveyor 12 and is subsequently transferred over a plurality of cone rollers 5. Since each cone roller 5 is rotated via a drive transmission mechanism consisting of a drive shaft 8, a worm gear 9, and a gear 6, which are rotated by a drive source 7, the wire S is connected to each cone roller in the direction of arrow 10 in FIG. 5 one after another, passes through the output side conveyor 13, reaches the focusing device 14, and is focused into a coil shape. During this transportation process, the wire S is immersed in the cooling liquid 2, and is subjected to desired cooling or heat treatment. Further, since the rotation speed of the cone roller 5 is different between the vicinity of the roller shaft 3 and the outer circumference, horizontal vibration occurs in the wire S being conveyed. Therefore, the wire S comes into even contact with the cooling liquid 2, and uneven processing can be reduced.

In this embodiment, an example was given in which the tank was applied to a liquid tank, but the same effect can be obtained by applying it to a cleaning tank with a spray nozzle above the tank, a spray pickling tank, etc. be able to. Further, in this embodiment, the drive transmission mechanism of the cone roller 5 uses a worm gear system using an electric motor as shown in the figure, but the present invention is not limited to this, but a bevel gear system, a bevel gear system,
A chain method or the like may be used. Furthermore, the drive form may be either batch drive by the drive shaft 8 as shown in Fig. 3, or individual drive for each roller shaft 3, but due to equipment space limitations and conveyance speed adjustment, the drive shaft 8 or a chain as shown in the drawing may be used to drive the rollers all at once. A drive system is preferable. By configuring the cone rollers 5 on the inclined parts on the inlet and outlet sides of the liquid tank 1 to be able to move up and down independently, smooth conveyance is possible depending on the state of the wire S. In addition, by providing shallow irregularities at the tip of the cone roller 5 to serve as a rotary impeller, consideration has been given to stirring the cooling liquid or cleaning liquid to provide a cooling effect or a cleaning effect, and a slip prevention effect when conveying the wire. being done.

In the device of the present invention, only the lower portions of the cone roller 5 and the roller shaft 3 are immersed in the liquid, and the bearing 4 and the drive transmission mechanism are placed above the liquid surface, so the bearing 4 and the drive transmission mechanism are immersed in the liquid. The mechanism is not damaged by oxidation or corrosion, and the roller shaft does not penetrate the side of the liquid tank, so there is no liquid leakage, long equipment life, and industrial use with excellent maintainability. It is a valuable conveyance device.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the apparatus of the present invention, FIG. 2 is a sectional view taken along line AA in FIG. 1, and FIG. 3 is a sectional view taken along line BB in FIG.

Claims (1)

[Claims] 1 A plurality of roller shafts are supported on the upper side wall of the processing tank in the wire transport direction, looking into the processing tank, a cone roller is fixed to the lower part of each roller shaft, and the upper part of the roller shaft is connected to a drive source. A device for transporting wire rods in a processing tank.