JP3247017B2 - Line trough equipment in steel bar rolling equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a line trough apparatus in a steel bar rolling plant, and more particularly to preventing a waving phenomenon of a steel bar caused by a difference between an inner dimension of a gutter-like member and a diameter of the steel bar. The present invention relates to a line trough device in a steel bar rolling plant that is made possible.

[0002]

2. Description of the Related Art As is well known, in a steel bar rolling facility, a steel bar rolled by a rolling mill is conveyed to a cooling floor and cooled. When the bar is transported to the cooling floor at a high rolling speed, for example, 15 m / s or more, a line trough device having a configuration described below is used. Hereinafter, a trough device main body of such a line trough device will be described with reference to FIG.

[0003] That is, the trough apparatus main body 2 has a gutter-like member 5 having an inner dimension corresponding to the maximum diameter of the steel bar through which the steel bar sent from a transport unit (not shown) is passed inside. In addition, a plurality of swing arms, which will be described later, each having a connecting rod 8 connected to the other end of the swing support shaft 7 are provided in a vertical positional relationship. That is, two upper swing arms 3 and 3 having a longer length are provided on the upper side, and lower swing arms 4 and 4 having a shorter length are provided on the lower side.

The upper and lower swing arms 3, 3,
When the plates 4 and 4 become horizontal, they have a plate member 9 for individually closing each of the openings of the gutter-like member 5, and have drop spaces 10 and 11 that open to the lower side. Upper and lower troughs 12, 12, 13, 13 are constituted by the gutter-shaped members 5 and the plate members 9 of the swing arms 3, 3, 4, 4. One end of an operating lever 14 having a swinging fulcrum substantially at the center in the longitudinal direction is connected to the tip of the connecting rod 8, and the other end of the operating lever 14 is connected to a rod of an air cylinder, which is an operating device (not shown). The tip is connected.
The lower swing arms 3, 3, 4, and 4 are configured to swing by the expansion and contraction of a rod of an air cylinder. The falling spaces 10 and 11 are provided between an inner guide 16 and an outer guide 17 and an intermediate guide 18 provided between the inner and outer guides 16 and 17 to adjust the interval between the falling spaces 10 and 11. Is formed. And the falling space 1
Below the 0 and 11, a well-known cooling floor 19 having V-grooves 19a and 19b as receiving grooves is provided.

Accordingly, the steel bar sent from the transfer section reaches the gutter-shaped member 5 of the upper and lower troughs, and when the transfer is stopped, the gutter of the upper and lower swing arms 3, 3, 4, 4 is formed. The member 5 side is swung downward, and the steel bar in the gutter-shaped member 5 passes through the falling spaces 10 and 11 and the V-grooves 19a and
Fall to 19b. The steel bars that have fallen into the V-grooves 19a and 19b are sequentially moved to other V-grooves by the operation of a rake device (not shown), and are cooled during the movement. A configuration equivalent to the trough device body is described in, for example, Japanese Utility Model Publication No. 5-39664.

[0006]

However, when the diameter of the steel bar changes and becomes smaller, the difference between the diameter of the steel bar and the inner size of the gutter-like member increases, and this difference in size causes the steel bar to be called a buckling. Since a waving phenomenon occurs and the product becomes defective, a trough apparatus main body having gutter-like members having different internal dimensions according to the diameter of the steel bar is usually used.

[0007] For this reason, equipment costs are disadvantageous and a large installation space is required, and it is difficult for existing equipment to cope with an increase in the diameter range of steel bars. When the difference between the diameter of the steel bar taken into the gutter-shaped member and the inner size of the gutter-shaped member increases, the waving phenomenon occurs in the steel bar because the gap generated by the difference between the diameter and the inner size is large. This is because the steel bar cannot be reliably restrained by the gutter-shaped member.

Accordingly, an object of the present invention is to provide a line trough apparatus in a rolling plant which can reliably transfer a bar having a wider diameter range than before, without causing a waving phenomenon. is there.

[0009]

SUMMARY OF THE INVENTION In view of the above circumstances, according to the present invention, a gutter-like member having a different inner size is provided on a swing arm, and a steel bar having a diameter corresponding to the inner size of the gutter-like member is selectively conveyed. It is thought that the above problem can be solved.

Therefore, the main means employed by the line trough device in the rolling equipment according to the present invention is a swing arm which is swung about a horizontal support shaft by swinging of an operating lever around a horizontal axis by a working device. On the counteracting lever side, a gutter-like member through which the bar steel conveyed from the conveyor is passed, and a plate member for closing the opening of the gutter-like member when the swing arm is in a horizontal state. The swing arm has a gutter-like member side swinging downward, and a steel bar in the gutter-like member passes through an opening through a falling space to form a cooling floor disposed below the falling space. In the line trough device in the steel bar rolling equipment to be dropped into the receiving groove, the swing arm has a different inner dimension from the gutter-like member on the swing support side of the gutter-like member.
A steel bar transfer destination switching device for providing another gutter-like member having an inside dimension , and further switching a steel bar transfer destination depending on a difference in diameter to transfer the steel bar to any of the gutter-like members in the middle of the transfer unit. It is characterized by having been provided.

[0011]

According to the line trough apparatus in the rolling equipment according to the present invention, a steel bar transfer destination switching device for switching a steel bar transfer destination to a gutter-shaped member provided on a swing arm having a different inner dimension depending on a difference in diameter. Thus, the steel bar having a diameter corresponding to the inner dimension of the gutter member can be fed by switching the transfer destination, so that it is not necessary to use another line trough device having a gutter member having a different inner dimension.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a line trough device in a rolling plant according to an embodiment of the present invention will be described with reference to FIG. With reference to FIG. 2 illustrating the configuration, the same components and components having the same functions as those of the above-described conventional example will be described using the same reference numerals.

As shown in FIG. 1, the trough apparatus main body 2 of the line trough apparatus (see FIG. 2) is provided with a steel bar sent from a transport unit shown in FIG. A gutter-like member 5 having an inner size corresponding to the maximum diameter of B1
Is provided at one end, and a plurality of swing arms, which will be described later, formed by connecting the connecting rod 8 to the other end sandwiching the swing support shaft 7 are provided in a vertical positional relationship.

That is, two upper swing arms 3 and 3 having a long length are provided on the upper side, and two lower swing arms 4 and 4 having a short length are provided on the lower side. Further, when the upper and lower swing arms 3, 3, 4, 4 are horizontal, there is a plate member 9 for individually closing each of the openings of the gutter-shaped member 5, and a dropper opening downward. Space 10,
11 and these upper and lower swing arms 3, 3,
The upper and lower troughs 12, 12, 13, 13 are constituted by the gutter-shaped members 5 of 4, 4 and the plate member 9. One end of an operating lever 14 having a swinging fulcrum substantially at the center in the longitudinal direction is connected to the distal end of the connecting rod 8. The upper and lower swing arms 3, 3, 4,
Numeral 4 is configured to be swung by expansion and contraction of a rod of the air cylinder 15.

As is well understood from the above description, the configuration of the trough apparatus main body is exactly the same as the conventional trough apparatus main body. In the present embodiment, each of the lower swing arms 4 and 4 of the trough device main body 2 having such a configuration is provided on the swing support shaft 7 side of the lower swing arms 4 and 4 with respect to the gutter-shaped member 5. The gutter-shaped member 5 has an inner size different from that of the gutter-shaped member 5 and is provided with another gutter-shaped member 6 through which a thick steel bar B2 is passed.

Of course, similarly to the above-described conventional example, the falling spaces 10 and 11 are provided between the inner guide 16 and the outer guide 17 and between the inner and outer guides 16 and 17 so that the falling spaces 10 and 11 are provided. It is formed between intermediate guides 18 for adjusting the interval. A well-known cooling floor 19 having V grooves 19a, 19b, which are receiving grooves for receiving the steel bars falling through the falling spaces 10, 11, is provided below the falling spaces 10, 11, respectively.

Then, the steel bar is selectively conveyed to the trough-shaped members 5 and 6 of the trough apparatus main body 2 by the conveying section 20 having the structure shown in FIG. Hereinafter, the configuration of the transport unit 20 will be described. In FIG. 1, the one indicated by a dashed line is the trough device main body 2, and the gutter-like member 5 provided on the upper swing arm of the trough device main body 2 includes:
Two thin object lines 21 and 21 for conveying a bar having a small diameter communicate with each other, and a gutter-like member 5 provided on a lower swing arm is provided.
Each of 6 has thin lines 22 and 22 for conveying two thin steel bars and thick lines 23 and 23 for conveying thick steel bars.

Further, a transport base line 24 dedicated to the transport of thin steel bars is provided on the transport base side of the narrow material lines 21 and 21 via a steel bar transport destination switching device 30 described later.
A transport base line 25 for transporting a small diameter steel bar and a large diameter steel bar via the steel bar transport destination switching device 30, also described later, is provided on the transport base side of the thick steel lines 23, 23, respectively. ing. Note that, in the transfer base line 25, instead of transporting the small-diameter steel bar and the large-diameter steel bar in a mixed state, for example, when the transport of a plurality of small-diameter steel bars is completed, Switching is performed for each production unit such that one bar is transported.

The steel bar transfer destination switching device 30 comprises a portion for switching the transfer of the steel bar to the thin line 21, 21, 22, 22 and a portion for switching the transfer of the steel bar to the thick line 23. . First, the former part for switching the conveyance has upper and lower switching lines 31, which are swingably supported with swinging fulcrums on the side of the transfer base lines 24 and 25, respectively.
And a first line switching cylinder 33 having a rod end pivotally connected to a connecting lever 32 connecting the upper and lower switching lines 31, 31.

Next, the latter part for switching the conveyance is connected to two positions of a lower upper / lower switching line 31 shown in FIG.
Book intermediate lines 34, 34, and these intermediate lines 34, 34
Thick / thin switching lines 35, 35, each of which has a swinging fulcrum on the side 34 and are swingably supported, and a connecting lever 36 connecting these thick / thin switching lines 35, 35, the tip of the rod is pivotally connected. And a second line switching cylinder 37. In short, the steel bar transfer destination switching device 30 includes an intermediate line 34, 34, a thick / fine switching line 35, 35, and a second line switching cylinder 37 in the conventional steel bar transfer destination switching device. Each is added.

The mode of operation of the line trough apparatus 1 having the above configuration will be described below. The rod of the second line switching cylinder 37 of the steel bar transfer destination switching apparatus 30 is extended to extend the distal end sides of the thick / thin switching lines 35, 35. While swinging upwards,
By expanding and contracting the rod of the first line switching cylinder 33, a bar steel having a small diameter can be fed to each of the gutter-like members 5 provided at the distal ends of the upper and lower swing arms 3, 4.

On the other hand, the lower transfer base line 25 shown in FIG.
When the thick steel bar is conveyed, the rod of the second line switching cylinder 37 is reduced, and the leading end of the thick / thin switching line 35, 35 swings downward, and the tip swings downward. Since it matches the entry side of the thick lines 23, 23 for conveying the steel bars to the other gutter members 6 provided on the arm 4, a thicker steel bar can be fed to the other gutter members 6.

As described above, the steel bar having a diameter suitable for the inner dimensions of the gutter members 5 and 6 can be fed freely by the operation of the steel bar transfer destination switching device 30.
Needless to use another line trough device, a single line trough device 1 can prevent a waving phenomenon occurring in a steel bar based on a dimensional difference. Therefore, it is advantageous in terms of the equipment cost, and can be dealt with only by the existing installation space, which has a great effect on reduction of the equipment cost and space saving.

In the above, an example in which another gutter member 6 is provided only on the lower swing arm 4 has been described. For example, the lower gutter member 4 is provided between the upper transport base line 24 and the fine object lines 21 and 21. Transport base line 25 and narrow object line 22, thick object line 23,
23, a thick / fine switching line 35, 35, and a second line switching cylinder 37.
By adding a switching portion having the following configuration, another gutter-shaped member can be provided also in the upper swing arm 3, and the gutter-shaped member 5 and the other gutter-shaped member 6 can be individually provided to the swing arm. The technical idea of the present invention is not limited by the above-described embodiments, since the configuration can be provided and each can be individually swung.

[0025]

As described above in detail, according to the line trough apparatus in the rolling equipment according to the present invention, the gutter-shaped members provided on the swing arm having different inner dimensions are provided with different diameters. A steel bar having no waving phenomenon can be obtained by switching the transport destination by a steel bar transport destination switching device and feeding a steel bar having a diameter corresponding to the inner dimension of the gutter-shaped member. It is not necessary to use another line trough device having a gutter-shaped member having an inner size, which can greatly contribute to reduction in equipment cost and space saving.

[Brief description of the drawings]

FIG. 1 is a sectional configuration explanatory view of a trough device main body of a line trough device in a rolling facility according to an embodiment of the present invention.

FIG. 2 is a schematic configuration explanatory view of a transfer section provided with a steel bar transfer destination switching device of a line trough device in a rolling facility according to an embodiment of the present invention.

FIG. 3 is an explanatory cross-sectional configuration diagram of a trough device main body of a line trough device according to a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Line trough apparatus, 2 ... Trough apparatus main body, 3 ... Upper swing arm, 4 ... Lower swing arm, 5 ... Gutter-like member, 6 ...
Gutter-shaped member, 7: swing support shaft, 8: connecting rod, 9: plate member,
10: falling space, 11: falling space, 12: upper trough,
13 lower trough, 14 operating lever, 15 air cylinder, 16 inner guide, 17 outer guide, 18 intermediate guide, 19 cooling floor, 19a V groove, 19b V
Groove, 20: conveying section, 21: fine object line, 22: thin object line, 23: thick object line, 24: conveying base line, 25: conveying base line, 30: steel bar transfer destination switching device, 31: upper / lower Switching line, 32: connecting lever, 33: first line switching cylinder, 34: intermediate line, 35: thick / thin switching line, 36: connecting lever, 37: second line switching cylinder, B: steel bar.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B21B 43/00

Claims (1)

(57) [Claims] 1. A bar bar conveyed from a conveyance unit is passed through a counter arm of a swing arm that is swung about a horizontal support shaft by swinging of an operation lever about a horizontal axis by a working device. A plate member for closing an opening of the gutter-shaped member when the swing arm is in a horizontal state, and swinging the gutter-shaped member side of the swing arm downward. In the line trough apparatus in a bar steel rolling facility, the steel bar in the gutter-shaped member is moved from the opening to drop through a falling space into a receiving groove of a cooling floor disposed below the falling space. On the swing support side of the trough-shaped member of the arm ,
Another gutter-shaped member having an inner dimension different from the inner diameter of the gutter-shaped member is provided, and further, in the middle of the transport section, a transport destination of the steel bar is transported to a different one of the gutter-shaped members due to a difference in diameter. A line trough device in a bar and bar rolling plant, wherein a bar and bar transfer destination switching device for switching between the two is provided.