JPH0581329B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a Turks head roll stand in an electric resistance welded pipe manufacturing facility.

[Prior Art] ERW pipe manufacturing equipment is equipped with a Turks head roll stand for straightening bends in pipes caused by thermal deformation, etc.; When rearranging Turkshead rolls due to changes, etc., it was very difficult to do so due to the structure.

Figures 4 and 5 show an example of a conventional Turks head roll stand, which is used on an electric resistance welded pipe manufacturing line a.
An inner stand d that can be moved via wheels c is provided on a rail b provided on the floor orthogonally to the inner stand d. The push/pull cylinder f allows it to be assembled into an outer stand g provided on the electric resistance welded tube production line a, or to be pulled out from there. h indicates the clamping device of the inner stand d.

Inside the inner stand d, there are four rolls i, j, k, l that sandwich the pipe from the top, bottom, left and right.
are provided, and each of the rolls is supported by a yoke n via a roll shaft m. In addition, on the downstream side of the inner stand d in the pipe flow direction o, a solid support plate p is fixed in contact with the yoke n to receive the load reaction force of each roll. is equipped with a removable presser plate q. r indicates an opening provided in the support plate p and the presser plate q.

Further, the left and right sides (front and rear sides in the direction of movement) of the inner stand d are provided with hanging ears s, t, u, and v for lifting the inner stand d using a factory crane or the like and allowing it to fall over.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional Turk roll head stand, when the rolls are rearranged, the push/pull cylinder f
After pulling the inner stand d sideways from the production line a, it is lifted up by a factory crane and moved to an off-line (roll shop), and the presser plate q is lifted by lifting the hanging ears s, t, u, and v. By inverting the inner stand d so that the side is on the upper side, and then removing the presser plate q, each rail i, j, k, l is removed along with the yoke n, and another roll to be used next is installed. Lifting and overturning the inner stand d takes a lot of time, resulting in poor work efficiency, which poses a particular problem when dealing with a wide variety of products in small quantities, which is a recent demand trend, and also occupies the factory crane for a long time. The work of overturning the inner stand d not only requires a lot of time and labor for the worker to work with him, but also poses a problem in that the work is dangerous.

The present invention does not focus on the above-mentioned conventional problems, and aims to expand the automation of roll rearrangement work, save labor, and improve safety by providing the Turkshead roll stand itself with an overturning function. The purpose is to

[Means for Solving the Problems] The present invention was made in an attempt to solve the above-mentioned technical problem, and includes a movable carriage that can move orthogonally to the electric resistance welded pipe production line, and The present invention relates to a Turks head roll stand characterized in that an inner stand is attached to the stand so that it can be tipped over via a tipping drive device, and a locking device is provided to fix the inner stand in an operating position.

[Function] Therefore, in the present invention, when changing the rolls, it is possible to overturn the inner stand while it is supported on the movable cart using the overturning drive device, and therefore the rolls can be changed efficiently using only a small crane. It can be done effectively and safely.

[Examples] Examples of the present invention will be described below with reference to the drawings.

1 to 3 show an example of the present invention,
A movable trolley 4 that can be moved via wheels 3 is provided on a rail 2 provided on the floor perpendicular to the electric resistance welding production line 1. Bearing stands 5 and 6 extending upward are provided at the position), and support shafts 8 and 6 protruding from the left and right sides of the inner stand 7 are provided.
9 is rotatably supported by bearings 10 and 11 of the bearing stands 5 and 6.

Further, on the outer surface of one of the bearing stands 5 and 6, an overturning drive device 14 is provided which rotates the support shaft 8 via a motor 12 and a gear mechanism 13.

Further, the movable cart 4 is provided with a lock device 17 comprising a lock block 16, etc., which engages with the inner stand 7 by the operation of a hydraulic cylinder 15 and locks the rotation of the inner stand 7 in the operating position. It is set up.

Further, a push/pull cylinder 19 having a hook 18 that engages with the movable trolley 4 is provided to assemble the inner stand 7 supported on the movable trolley 4 to the outer stand 20 provided on the ERW pipe manufacturing line 1. It is possible to enter the line or pull it out from there.

As shown in FIG. 3, upper, lower, left and right rolls 21 are incorporated inside the inner stand 7, and each roll 21 is supported by a detachable yoke 23 via a roll shaft 22. 24 indicates a roll adjustment screw. Furthermore, a firm support plate 26 is fixedly installed on the downstream side of the inner stand 7 in the pipe flow direction 25 to receive a load reaction force, and a firm support plate 26 is fixedly installed on the upstream side of the pipe flow direction 25 with bolts 28 or the like. Possible presser plate 27
It is equipped with

In the above configuration, when changing the rolls from the state shown in FIGS. 1 and 2, first the push/pull cylinder 19
The movable cart 4 is moved to pull out the inner stand 7 to a required position outside the line 1.

Subsequently, the locking device 17 releases the inner stand 7, and the motor 1 of the overturning drive device 14 is released.
2, and invert the inner stand so that the presser plate 27 side is on the upper side. If the presser plate 27 is removed from this state, each roll 21 can be replaced with another roll. At this time, since only the rolls 21 are replaced, if a small crane is prepared, the rolls can be replaced without using a large factory crane or the like.

When the rearrangement of the rolls 21 is completed, the inner stand 7 is returned to its original position by the overturning drive device 14, and the inner stand 7 is returned to its original position by the locking device 17.
is fixed in the operating position, and then the moving carriage 4 is moved by the push/pull cylinder 19 to move the inner stand 7.
is assembled into the outer stand 20 and set on line 1.

In the above embodiment, one presser plate 2
7, the four rolls 21 are fastened with the bolts 28 so as to be held at the same time. However, as shown in FIG. By holding the roll 21 with a keeper plate 31 having holes 30, the roll 21 may be replaced by simply loosening the bolt 28 and shifting the keeper plate 31 in the direction of the arrow.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and that the push-pull movement method of the mobile cart may be replaced with a self-propelled type, and that the inner stand's overturning drive method, locking method, etc. can be changed in various ways. It goes without saying that various other changes may be made without departing from the gist of the present invention.

[Effects of the Invention] As described above, according to the Turkshead roll stand of the present invention, the inner stand is mounted on the movable trolley so that it can be tipped over by the tipping drive device, so when the rolls are changed, the inner stand Can be easily and automatically tipped over,
Therefore, the roll exchange can be carried out using only a small crane, which brings about excellent effects such as improving the efficiency of the recombination operation, saving labor by allowing the factory crane to be used for other operations, and improving safety.

[Brief explanation of the drawing]

Figure 1 is a front view showing one embodiment of the present invention, Figure 2 is a front view showing one embodiment of the present invention;
The figure is a plan view of Fig. 1, Fig. 3 is a partial detailed view of Fig. 1 seen from the back, Fig. 4 is a front view showing an example of a conventional Turks head roll stand, and Fig. 5 is the same as Fig. 4. FIG. 1 is an ERW pipe manufacturing line, 2 is a rail, 4 is a moving trolley, 5 and 6 are bearing stands, 7 is an inner stand,
8 and 9 are support shafts, 14 is an overturning drive device, 17 is a lock device, 19 is a push/pull cylinder, 20 is an outer stand, 21 is a roll, 23 is a yoke, and 27 is a presser plate.

Claims (1)

[Claims] 1. A movable trolley capable of moving perpendicular to the electric resistance welded pipe manufacturing line is provided, and an inner stand is attached to the movable trolley so that it can be tipped over via a tipping drive device, and the inner stand is fixed in an operating position. A Turks head roll stand characterized by being equipped with a locking device as described above.