JP2534819Y2 - Roller type guide device for wire rod and bar rolling mill - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller type guide device for a wire rod / bar rolling mill.

[0002]

2. Description of the Related Art In a conventional wire rod and bar rolling mill, guides for guiding and guiding a rolled material are incorporated into a pass line entrance side and an exit side of a rolling roll so as to be detachable from a housing. The guide fixing method will be described. For example, in the case of a vertical rolling mill, as shown in FIG. 3, a rest bar vertically fixed to an entrance side and an exit side of a housing 1 rotatably supporting a pair of rolling rolls 2. 3,4
Then, the entrance guide 5 and the exit guide 6 are attached to positions corresponding to the groove shape of the rolling roll 2 respectively. As the entrance guide 5 or the exit guide 6, for example, as shown in FIG. 4, a roller type guide in which a guide roller 7 is incorporated in a guide box 8 is used. This is for preventing the occurrence of seizure of the rolled material by guiding the rolled material by rolling contact.

[0003]

However, when the above-mentioned roller guide is mounted on the rest bar, there are the following problems. That is, at the time of repositioning of a hole type called so-called caliber replacement of a rolling roll, it is necessary to change the mounting position of the guide, so it is necessary to remove and install the guide each time, and it takes a long time to reassemble the guide, Usually, a carrier such as a crane is used for reassembly of the guide.However, since the guide is mounted close to the rolling roll and enters the inside of the housing, many people have to hold it sideways when taking it in and out. It must be relied on, it may take a long time and may be dangerous.Especially, the guide of the upstream rolling mill is heavier, and the guide of the vertical rolling mill must be fixed by horizontal cantilever support. It is necessary to rotate 90 ° because it has to be done, so the load at the time of reassignment work will be even larger.

An object of the present invention is to provide a roller type guide device for a wire rod and bar rolling mill which has been made to solve the above-mentioned problems.

[0005]

SUMMARY OF THE INVENTION The present invention is a roller type guide device which is mounted on a wire rod / bar rolling mill comprising a pair of rolling rolls and a housing which rotatably supports the rolling rolls and guides the rolled material. A roller holder for holding a roller portion of the roller guide, a guide holder having a guide portion for detachably supporting the roller holder and guiding a rolled material, and a slide base portion; A slide guide for slidably guiding, a cylinder for moving the guide holder so as to be able to advance and retreat in a rolling pass line direction, and a support stand which stands upright independently of the housing and supports the slide guide. This is a roller type guide device for a wire rod / bar rolling mill.

[0006]

According to the present invention, a roller guide holding a roller portion of a roller type guide is detachably supported by a guide holder, and the guide holder is supported by a support stand provided independently of a housing. The inside can be advanced and retracted in the direction of the rolling pass line by a cylinder. Therefore, when changing the guide, the guide holder can be pulled out of the housing by operating the cylinder, so that the guide can be easily lifted and replaced by a crane. Further, in the case of changing the caliber, it is possible to change the caliber into a target size simply by pulling the guide holder out of the housing and shifting the stand.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the roller type guide device of the present invention will be described below with reference to the drawings. FIG. 1 is a partial side sectional view showing an embodiment of an entrance guide when the present invention is applied to a vertical rolling mill. As shown in the figure, the guide roller 7 is assembled and held in a roller holder 9 in a cassette manner.
The roller holder 9 is incorporated in a guide holder 10 in which a guide portion 10A and a slide portion 10B are integrated, and is fixed by a fixing bracket 11 such as a bolt. The guide holder 10 is slidably mounted on a slide guide 13 fixed on a support base 12 erected on the base floor FL independently of the housing 1 on the rolling mill entry side. The guide holder 10 is movable along a rolling pass line PL by a cylinder 16 mounted on a gantry 15 provided below an induction trough 14 on the rolling mill entry side. The guide holder 10 is configured to slidably fit into a slide groove 13a provided on the inner surface of the slide guide 13 as shown in FIG.

In order to replace and reassemble the entrance guide 5 configured as described above, first, the cylinder 16 is operated to move the entrance guide 5 in the direction of the guide trough 14 on the entry side of the rolling mill (in the direction of the rolling pass line PL). After pulling out to the opposite side of the housing 1), the fixing bracket 11 is removed, the roller holder 9 is lifted by a crane and moved, and another roller holder 9 corresponding to a predetermined size is set on the guide holder 10 and the fixing bracket 11 is set. Then, the cylinder 16 may be operated again to be pushed into the entry side of the predetermined shape of the rolling roll 2. In the case of changing the caliber, a so-called stand shift for moving the housing 1 in the up-down direction by a driving device (not shown) is used so that a predetermined hole shape of the rolling roll 2 is inserted into the entrance guide 5.
The caliber replacement can be easily performed by positioning at the position. Although only the entrance guide 5 has been described in the above embodiment, it is needless to say that the present invention is not limited to this and can be similarly applied to the exit guide 6.

Table 1 shows the guide replacement time per rolling mill when the guide device of the present invention is applied to a horizontal rolling mill and a vertical rolling mill, in comparison with the actual value in a conventional example.

[0010]

[Table 1]

As is clear from this table, the time required for guide replacement in the present invention is about 73% in the case of the horizontal rolling mill and about 85% in the case of the vertical rolling mill, as compared with the conventional example. However, it can be understood that the operation can be greatly reduced, and the guide replacement operation can be performed by one operator, which is efficient.

[0012]

According to the present invention, the roller portion of the roller type guide is held in the roller holder to form a cassette, and the roller guide can be moved back and forth in the direction of the pass line, so that the guide can be replaced without being affected by the housing. And change the caliber, can significantly reduce the workload,
In addition, the safety at the time of the reassignment work can be improved.

[Brief description of the drawings]

FIG. 1 is a partial side sectional view showing an embodiment of an entrance guide when the present invention is applied to a vertical rolling mill.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a side sectional view showing a conventional example of a vertical rolling mill.

FIG. 4 is a side view showing a conventional example of a roller guide.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 2 Rolling roll 5 Inlet guide 6 Outlet guide 7 Guide roller 9 Roller holder 10 Guide holder 12 Support stand 13 Slide guide 16 Cylinder

Continuation of the front page (56) References JP-A-59-120312 (JP, A) Jiko 61-24325 (JP, Y2)

Claims (1)

(57) [Scope of request for utility model registration] 1. A roller type guide device for guiding a rolled material mounted on a wire rod and steel bar rolling mill comprising a pair of rolls and a housing rotatably supporting the rolls, wherein the roller type guide is provided. A roller holder for holding the roller portion, a guide holder for detachably supporting the roller holder and having a guide portion for guiding the rolled material and a slide base portion, and a slide guide for slidably guiding the guide holder. And a cylinder that moves the guide holder freely in the direction of the rolling pass line and a support stand that stands upright independently of the housing and supports the slide guide. Roller type guide device.