JPS62136307A - Slit device in steel strip rolling fine - Google Patents

Abstract

PURPOSE:To prevent rotary members from being injured, by fixing the rotary members which are revolved by the water pressure onto a pair of slit rollers and revolving said slit rollers by the water pressure, thus lightening the impact in the case when a rolled material is caught. CONSTITUTION:Cooling water is jetted in the direction of arrow towards the peripheral surfaces of the rotary plates 15a and 15c from conduits 10 and 10a. Then, the rotary plates 15a and 15c revolve like water wheels, and revolve the fixed slit rollers 4 and 4a in the direction of arrow. Since the slit rollers are revolved by the water pressure, the impact in the case when a rolled material is caught can be markedly lightened.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a slitting device installed in a rolling line for long steel such as round bars and wire rods.

[Conventional technology]

Various methods are used to manufacture long steel, one of which is shown in FIG. In this manufacturing method, a billet 1 having a square cross section is successively rolled into a rolled material having a gourd-like cross section with a constriction in the center.
, 4a in the length direction and separate into two pieces, each of which is rolled to produce, for example, a round bar 3ie. FIG. 6 is a plan view for explaining how the rolled material 2 having a gourd-shaped cross section is cut.

FIG. 7 is a partial cross-sectional view of an example of slit installation installed in a bar production line, and FIG. 8 is a cross-sectional view showing the main part thereof. In both figures, a slitting device 5 includes slitting rollers 4, 4a each having a substantially triangular outer periphery. The slit rollers 4, 4a are fixed to shafts 8, 8a, and the shafts 8° 8a are rotatably supported via bearings on bearing boxes 7, 7a and 7b, 7c attached to both side plates 6, 6a, respectively. has been done. Numerals 9 and 9a are studs for regulating the position of the slit roller 4.

10 and 10a are pipes for supplying cooling water to the slit rolls 4 and 4a, 11 is an inlet of the work material 2, 12 is an outlet of the cut rolled material 2, and 13.23a is an inlet of the slitting device 5. The provided rolling rolls, P-P, are pass lines of the rolled material 2.

In the slitting device 5 configured as described above, the rolled material 2 rolled into a gourd shape by the rolling machine runs on the pass line PP and passes from the inlet 11 to the slitting device 5.
The material is fed into the sleeve, cut at the center by the sleeve roller 4.degree. 4a, separated into two parts, and sent out from the outlet 12 to the next process. Note that the slit rollers 4 and 4a are normally stopped, and when the rolled material 2 is fed, they naturally rotate as the rolled material 2 runs while being cooled by cooling water.

[Problem that the invention seeks to solve]

The slitting device 5 as described above is capable of reliably slitting the rolled material 2, and is therefore put into practical use in many fields. However, the final rolling speed is 16
m/sec is the highest, and if you increase the speed beyond this to increase productivity, the slit roller 4, which is in a stopped state, will
, 4a when the rolled material 2 is bitten, the slit rollers 4.degree. 4a suffer from breakage and premature wear, and the rotating elements such as bearings are likely to be damaged.

In order to avoid such problems, it is possible to rotate the slit rolls 4 and 4a with a motor, but this is not practical because the atmosphere around the slit guide 5 is high temperature and bad, and it is also expensive.

[Means for solving problems]

The present invention was made to solve the above-mentioned problems, and is installed in a long steel rolling line, and the rolled material fed from the inlet is slitted in the length direction by a pair of rotatably placed slit rollers facing each other. In a slitting device that cuts the material and sends it out from the outlet, a rotating member rotated by water pressure is fixed to each of the pair of slit rollers, and the pair of slit rollers are rotated in the running direction of the rolled material. The present invention provides a kero slid device.

[Effect]

When water is injected onto the rotating member from the cooling water pipe, the rotating member is rotated by the water pressure, and the slit roller to which the rotating member is fixed is rotated in the running direction of the rolling member. Thereby, it is possible to significantly reduce the impact when the rolling member is bitten.

〔Example〕

The first part is a partial cross-sectional view of an embodiment of the present invention, and the second part is a cross-sectional view showing the main part thereof. Note that portions l& that are the same as or equivalent to those of the conventional example explained in FIGS. 7 and 8 are given the same reference numerals, and the description thereof will be omitted. In the figure, 15° 15a and 15b, 1
5c is a rotary plate fixed on both sides of the slit rollers 4, 4a, and an example of the upper rotary plate 15.15a is shown in FIG.

Reference numeral 16 denotes a large number of grooves inclined at equal intervals on the inner wall surface of the rotary plate 15 (in contact with the slid roller 4).

In the embodiment, the depth of this groove 16 is 7 times the thickness of the rotating plate 15.
0 to 80%, one end is formed in a circular arc shape and the other end is opened to the outer circumferential surface, and the angle α between the center of each adjacent circular arc part and the center of the rotary plate 15 is 30 degrees, so there are 12 pieces in total. The angle θ (the inclination of the groove 16) between the line connecting the center of the arc portion and the center of the rotating plate 15 and the line passing through the center of the groove 16 was 75°.

Reference numeral 17 denotes a hole in which the rotary plate 15 is fitted onto the shaft 8 of the slit roller 4, and 18 and 18a denote bolt holes for fixing the rotary plate 15 to the slit roller 4 with bolts.

FIG. 4 shows the lower rotary plates 15b, 15c, except that the grooves 16 are oriented in the opposite direction to the upper rotary plates 15.15a. It has the same structure as ISa.

Next, the present invention configured as described above will be explained in detail. In the present invention, before the rolled material 2 is bitten by the slit rollers 4, 4a, the rotating plate 15, 15 is
Cooling water is injected toward the circumferential surfaces of a, 15b, and 15c in the directions indicated by arrows. As a result, the rotating plate 15,
15a, 15b, and 15c rotate like a water wheel, and rotate the fixed slit collages 4, 4a in the direction of the arrow, and thus in the running direction of the rolled material 2. Then, the rolled material 2 is fed through the inlet 11 and passed through the slit rollers 4, 4a.
The rolled material 2 is cut and sent to the next process. In this case, the slit rollers 4, 4n are rotary plates 15 to 15c.
In addition, the pipe 10.1 is cooled by water injected into the
The slit rollers 4, 4a may be cooled by injecting t1 directly from 0a.

In the present invention, as described above, the slit roller 4 is
, 4a are rotated, so that the impact when the rolled material 2 is bitten can be greatly alleviated, and at the same time, the slit rollers 4, 4a can be cooled. In this case, even if the rotational speed of the slit rollers 4, 4a is considerably slower than the running speed of the rolled material 2, the impact at the time of biting can be reduced.

In the above description, the grooves are provided in the inner wall surface of the rotary plate, but they may be provided in the outer wall surface, or the grooves may be provided in the center of the outer circumferential surface.

Furthermore, it may be a water wheel-like structure in which plates are installed at equal intervals between both side plates at an angle, and in short, any structure that can be rotated by sprayed water is sufficient. Further, the number of grooves 16 and the angle of inclination are not limited to those in the above embodiments, and can be set as appropriate depending on the situation.

Furthermore, the slitting device 5 is not limited to the structure shown in the drawings, but may be of any other structure as long as it uses a slitting roller.

〔Effect of the invention〕

As is clear from the above explanation, since the present invention utilizes water to rotate the slit roller and the slit roller, it is possible to significantly reduce the impact when the rolled material is bitten, thereby preventing damage to the slit roller and wear and tear. Not only can damage to the two-rotation element parts be prevented, but the simple structure reduces maintenance and equipment costs, and the initial effects of implementation are significant.

[Brief explanation of drawings]

FIG. 1 is a side view of an embodiment of the present invention, partially shown in cross section, FIG. 2 is a cross sectional view showing the main parts, and (a
) is a front view of the rotary plate which forms the main part of the present invention, and (b
) is a central sectional view of the same, FIG. 5 is an explanatory diagram of an example of a bar manufacturing line, FIG. 6 is an enlarged plan view of its main parts, FIG. 7 is a side view of a conventional slitting device, and FIG. 8 is its essential parts. FIG. 2: Rolled material, 4.4a: Slit roller, 5 Nislitting device, 7~7C: Bearing box, 8° 8a: Shaft, 10
, 10a: Cooling water pipe, 11: Inlet of rolled material, 12:
Exit of rolled material, 15-15c: rotating plate, ]6: groove. Agent Patent Attorney Masaru Sato Figure 3 (b) (a) Figure 4 (b) (0) Figure 5 ■ 4 (I ba

Claims (1)

[Scope of Claims] A slitting device installed in a long steel rolling line, in which a rolled material fed from an inlet is cut in the length direction by a pair of slit rollers that are rotatably arranged opposite each other, and then sent out from an outlet, comprising: A slitting device for a long steel rolling line, characterized in that a rotating member rotated by water pressure is fixed to each of the slitting rollers, and the pair of slitting rollers are rotated in the traveling direction of the rolled material.