JPH0641685Y2 - Raying Head - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a laying head for wire rod rolling equipment and the like.

(Prior Art) As shown in FIG. 3, in a wire rod rolling equipment, a steel strip extracted from a heating furnace 1 is rolled into a predetermined shape by a rolling mill row 2 to be a wire rod 5. Is water-cooled by the cooling device 3.

The water-cooled wire is formed into a coil by the laying head 4, and the coil 5a is cooled by the cooling conveyer 6 and conveyed, and then focused by the focusing tab 7.

As shown in FIG. 4, the laying head 4 includes a hollow housing 8, a rotary shaft 10 rotatably mounted in the housing 8 through a bearing 9, and a rotary shaft 10 that rotates via a bevel gear mechanism 11. It has an electric motor 12 to be driven, a guide pipe 13 and the like which is provided around the rotating shaft 10 in a spiral shape and through which the wire 5 passes. 14 is a disk-shaped trough.

The rotary shaft 10 is inclined downward toward the tip, and its inclination angle with respect to the horizontal plane is 5 to 15 °.

By the way, since the inner surface of the guide pipe 13 is worn by the traveling of the wire rod 5, it is necessary to replace the guide pipe 13. However, in order to facilitate this replacement, the guide pipe 13 is attached to the rotary shaft 10 as follows. Mounted.

That is, the mounting plate 15 is spirally provided around the outer peripheral surface of the rotating shaft 10, and as shown in FIG. 5 and FIG. Clamping device for each part
It is detachably attached by 16.

By the way, in general, as shown in FIG.
The outlet side end of the wire rod 5 is inclined toward the front side in the traveling direction of the wire 5 at an inclination angle θ with respect to a plane 18 orthogonal to the axis 17 of the rotating shaft 10.

As described above, the outlet end of the guide pipe 13 is inclined because the coil 5a formed by the raying head 4 is formed.
To the front of the rotary shaft 10 in the axial direction, the ejection velocity V given by the following equation is applied so that the coil 5a is ejected from the raying head 4, and thus, from the raying head 4 of the coil 5a. This is to ensure the release of

V = v sin θ where v is the traveling speed of the wire. By the way, the traveling speed v of the coiled wire 5
(That is, the finish rolling speed) generally changes depending on the diameter of the wire rod 5, and the relationship between the two is as shown in the table below.

(Problems to be Solved by the Invention) In the above-mentioned prior art, however, the outlet side end of the laying head 4 is fixed to the mounting plate 15 in an unadjustable manner, and its inclination angle θ is a constant value. When the diameter of the wire 5 is changed, that is, when the traveling speed v of the wire 5 is changed, the ejection speed V of the coil 5a toward the front is changed, and the following problems occur.

That is, if the ejection velocity V is an appropriate value, the coil 5a is satisfactorily and smoothly discharged from the laying head 4 onto the cooling conveyer 6 as shown in FIG. 8, and as shown in FIG. The coil 5a is evenly placed on the conveyor 6,
It is cooled uniformly and the material becomes uniform.

However, when the flying speed V is too low, as shown in FIG. 9, a phenomenon occurs in which the coil 5a discharged from the laying head 4 stays near the exit of the laying head 4,
The phenomenon that the coil 5a is not discharged onto the cooling conveyor 6 satisfactorily and smoothly, and the coil 5a accumulates in several bundles and falls onto the cooling conveyor 6 is repeated, and as shown in FIG.
Coarseness occurs in the coil 5a on the cooling conveyor 6.

As described above, when the coil 5a on the cooling conveyor 6 becomes coarse and dense, the cooling unevenness of the coil 5a becomes large and the material becomes non-uniform.

Further, when the flying speed V is too high, as shown in FIG. 10, the coil 5a jumps out too much from the laying head 4 and the coil 5a does not tip over smoothly on the sliding board 19.
Similar to when the flying speed V is too small, the coil 5a on the cooling conveyor 6 is not uniformly placed, and the coil 5a on the cooling conveyor 6 becomes coarse and dense.

Further, the coil 5a is violently ejected from the raying head 4, whereby the coil 5a is deformed, or when the coil 5a is discharged onto the cooling conveyor 6, the coil 5a is flawed.

An object of the present invention is to provide a raying head that can solve the above problems.

(Means for Solving Problems) The present invention is directed to a rotary shaft 10 that is driven to rotate about a horizontal axis.
A guide pipe 13 through which the wire 5 passes is provided in a spiral shape, and an end portion on the outlet side of the guide pipe 13 is inclined with respect to a surface 18 orthogonal to the axis 17 of the rotating shaft 10. In order to achieve the above object, the following technical means is taken in a raying head which is provided with an angle θ and forms and discharges the wire 5 in a coil shape.

That is, according to the present invention, the rotating shaft 13 is provided with the clamp devices 16 and 22 that spirally surround the guide pipe 13, and the clamp device 22 on the outlet side of the guide pipe 13 among the clamp devices 16 and 22, Angle adjusting means for adjusting the inclination angle θ by moving the outlet side end of the guide pipe 13 in the axial direction of the rotating shaft 13.
It is characterized by having 25.

(Operation) When the traveling speed v of the wire 5 is changed, the guide pipe 13
Move the outlet side end of the
The inclination angle θ with respect to is adjusted so that the ejection speed V of the wire 5 from the raying head 4 is maintained at an appropriate value.

(Embodiment) In the following, a first embodiment of the present invention will be described with reference to the drawings such as FIG. 1. A guide pipe 13 is attached to a mounting plate 15 of a rotary shaft 10 through a clamp device. , Guide pipe
In order to be able to adjust the inclination angle θ of the outlet side end portion of the guide pipe 13, two or three clamping devices (A, B, C shown in FIG. 5) from the outlet side end portion of the guide pipe 13 The clamp device 22 shown in FIG. 1 is used, and the inclination angle θ of the guide pipe 13 can be adjusted to move in the axial direction of the raying head 4 by utilizing the flexibility of the outlet side end of the guide pipe 13. Has been done.

The clamp device 22 includes a clamp frame 23 and a fixing pin 24.
And the adjusting bolt 25 and the like.

The clamp frame 23 has a substantially gate shape and is fitted onto the outer peripheral portion of the mounting plate 15, and the fixing pin 24 is attached to the frame 23 and the mounting plate 15.
The frame 23 is removably attached to the attachment plate 15 by inserting the fixing bolt 27, into which the washer 26 is fitted, to the tip of the fixing pin 24.

The guide pipe 13 is inserted through the tip end side of the frame 23, but the tip end side of the frame 23 is formed slightly elongated in the thickness direction of the mounting plate 15. 23 It is slidable in the thickness direction of the mounting plate 15 between the outer peripheral portions of both.

A pair of adjusting bolts 25 for allowing the guide pipe 13 to be slidably adjusted are screwed into the left and right sides of the frame 23, and are fixed by lock nuts 28. With these adjusting bolts 25, the guide pipe 13 is released. The adjusting bolt 25 is freely fixed, and the adjusting bolt 25 serves as an angle adjusting means 25 that adjusts the inclination angle θ by moving the outlet side end of the guide pipe 13 in the axial direction of the rotating shaft 10.

According to the embodiment configured as described above, the ejection speed V of the coil 5a from the raying head 4 is too high, or
If it is too small, the coil 5a on the cooling conveyor 6 becomes coarse or dense, or the coil 5a is deformed,
If the 5a is damaged, perform the following work.

That is, in the clamp device 22 on the outlet side end portion of the guide pipe 13, the inclination angle of the outlet side end portion of the guide pipe 13 is utilized by operating the adjusting bolt 25 and the lock nut 28 to utilize the slight flexibility of the guide pipe 13. The θ is moved and adjusted in the axial direction of the laying head 4 to set the ejection speed V of the coil 5a to an appropriate value.

As a result, as shown in FIG. 8, the coil 5a is satisfactorily and smoothly discharged from the laying head 4 onto the cooling conveyor 6, and the coil 5a is evenly placed on the cooling conveyor 6 as shown in FIG. While being placed, the coil 5a will not be deformed and the coil 5a will not be scratched.

FIG. 2 shows a second embodiment of the present invention, in which a single adjusting bolt 25 is rotatably inserted between the left and right side portions on the tip side of the clamp frame 23 and the adjusting bolt 25 A pair of retaining rings 30 for making the adjustment bolt 25 immovable in the axial direction are detachably fitted to both side portions.

Reference numeral 31 denotes a holder having a gate-shaped cross section, which is fitted onto the guide pipe 13 so as to be freely fitted therein, and is located in the frame 23.
An adjusting bolt 25 is relatively slidably inserted into the holder, and the holder 31 is moved by the rotation of the adjusting bolt 25, and the guide pipe 13 is slid so that the adjusting head 25 is moved and adjusted in the axial direction. It

The adjusting bolt 25 and the fixing means for the holder 31 may be separately provided.

In the embodiment, the adjusting means is provided in the two or three clamp devices from the end portion on the outlet side of the guide pipe, but the number, positions, etc. of the clamp devices having the adjusting means are limited to the embodiment. Moreover, the adjusting means and the clamp device are not limited to the embodiments.

(Effects of the Invention) As described in detail above, according to the present invention, the outlet side end of the guide pipe that passes the wire in a spiral shape and discharges it is moved in the axial direction of the rotating shaft to increase the inclination angle (discharge angle). ) Can be adjusted, so that even if the traveling speed of the wire changes due to changes in the diameter of the wire, the ejection speed of the discharged wire can be set to an appropriate value and the placement of the coil wire on the cooling floor becomes stable. Also, there is no variation in product quality.

[Brief description of drawings]

Each of FIGS. 1 and 2 is a sectional view of an essential part showing each of the first and second embodiments of the present invention, FIG. 3 is an explanatory view showing a cooling and rolling facility, and FIG. 4 is a section of a raying head. Fig. 5, Fig. 5 is a view taken in the direction of arrow V in Fig. 4, Fig. 6 is a cross-sectional view taken along the line VI-VI in Fig. 5, and Fig. 7 shows the relationship between the traveling speed of the wire and the ejection speed of the coil. Explanatory diagrams for explaining, FIGS. 8 to 10 are explanatory diagrams showing the difference in the discharge state depending on the magnitude of the ejection speed of the coil,
Each of FIGS. 11 and 12 is an explanatory view showing the difference in the mounting state on the cooling conveyor depending on the magnitude of the coil ejection speed. 4 ... Raying head, 5 ... Wire rod, 5a ... Coil, 10
…… Rotary shaft, 13 …… Guide pipe, 16,22 …… Clamping device, 17 …… Shaft center, 18 …… Flat surface, 25 …… Adjustment bolt, θ…
… Inclination.

Claims (1)

[Scope of utility model registration request] 1. A guide pipe (1) through which a wire (5) passes through a rotating shaft (10) which is driven to rotate about a horizontal axis.
3) is provided in a spiral shape, and the end portion on the outlet side of the guide pipe (13) is inclined with respect to a plane (18) orthogonal to the axis (17) of the rotating shaft (10) ( In a laying head which is provided with θ and forms and discharges a wire rod (5) in a coil shape, a clamp device (16) in which a guide pipe (13) is spirally provided around the rotating shaft (10). ) (22) is provided, and the end of the guide pipe (13) on the outlet side is attached to the rotary shaft (13) in the clamp device (22) on the outlet side of the guide pipe (13) of the clamp devices (16) (22). ) Is provided with an angle adjusting means (25) for adjusting the inclination angle (θ) by moving in the axial direction.