JPS5927655B2 - Roll changing method in ERW pipe manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for changing rolls in electric resistance welded pipe equipment, and more particularly to a method for changing rolls using a roll changing trolley on which rolls are placed.

In conventional electric resistance welding pipe equipment, as shown in Fig. 1, a group of stands such as a breakdown stand 1, a side roller stand 2, a fin bath stand 3, a sizing stand 4, and a shaving stand 5 are fixed on a concrete foundation. It is configured by being installed on one or several bases 6.

The material then advances in the direction of the arrow and passes through each stand group to produce a tube. As shown in FIGS. 2 and 3, the method for changing rolls in this equipment is to hold the rolls 9 on the base 6 by the drive-side stand 8, and slide the operation-side stand 1 on the base 6. Pull it out using a jack, etc.

Next, the roll 9 was taken out from the drive side stand 8 and the roll was replaced.

For this reason, the frequency of roll replacement has increased to produce pipes of many sizes, and since ERW pipe equipment has a large number of stands, roll replacement requires a significant amount of time. This was a major hindrance.

The present invention solves these conventional difficulties and reduces the time required for roll rearrangement in a narrow space by using two types of comb-shaped stand rearrangement trolleys whose comb-shaped parts fit into each other for each stand group. It is an object of the present invention to provide a method for changing rolls in electric resistance welded pipe manufacturing equipment, which can significantly reduce the amount of damage.

The present invention will be explained below based on FIGS. 4 and 5. In FIG. 4, each stand of the stand group has a roll 9 held by a roll chock 10, an operation side stand T, and a drive side stand 8. Rolling operation is carried out in a state where it is housed in the

The roll chock 10 has wheels 11, and when recombining the rolls, the roll chock 10 with the old roll is pulled out of the stands □, 8 along the drawer rail 13 by the cylinder 12 for recombination, and the adjacent transverse set is pulled out. Replacement trolley 14
put it on top. FIG. 5 shows a state in which the transverse recombining cart 14 is installed adjacent to the side of a group of stands on the production line, and furthermore, the longitudinal recombining cart 18 is installed next to the transverse recombining cart 14. All the rolls of the stand group are pulled out onto the traverse recombination truck 14 and loaded at the same time. FIG. 6 shows a state in which the old rolls 15 pulled out from the stands are loaded on the traversing recombination cart 14. In FIG. 6, the traverse recombination cart 14 is installed on a traverse rail 16 laid parallel to the production line, and is movable parallel to the production line. The movement of the traverse recombination truck 14 is achieved by a traverse recombination cylinder 17. FIG. 7 shows a state in which the traverse recombination cart 14 has been moved parallel to the production line by half the distance between the stands from the state shown in FIG. 6. In FIG. 7, the recessed portion of the transverse recombining truck 14 and the convex portion of the longitudinal recombining truck 18 are in a positional relationship in which they fit together. A new roll 19 is loaded on the rail soil installed on the carriage on the convex portion of the longitudinal rearrangement carriage 18. In addition, the vertical rearrangement trolley 18
is movable perpendicularly to the production line and is achieved by a longitudinal reshuffling cylinder 20. The state shown in FIG. 8 is that the longitudinal recombination cart 18 has been moved from the state shown in FIG.
From the state shown in the figure, the new roll 19 loaded on the longitudinal recombination truck 18 is pulled into the stand by the recombination cylinder 12 shown in FIG. 4, thereby completing the recombination of the old and new rolls. As described above, according to the embodiment, the time required for roll rearranging is significantly shortened, so that production volume can be significantly increased. In addition, in the preparation stage before roll reshuffling, the new rolls are loaded on the vertical reshuffling trolley and are waiting, so the transverse reshuffling trolley installed next to the rolling line where the stands are lined up. People can walk freely on the top without interfering with rolling operations.

[Brief explanation of drawings]

Fig. 1 is a layout diagram of conventional ERW pipe manufacturing equipment, Fig. 2a is a partial plan view thereof, Fig. b is a partial front view, Fig. 3 is a plan view showing a conventional roll rearranging method, and Fig. 4 is a front view showing an embodiment of the present invention, FIG. 5 is a plan view thereof, FIGS. 6 and 7,
FIG. 8 is a plan view showing the method of recombining the wheels. 7...Operation side stand, 8...Drive side stand, 9...Tail, 10...Roll choke, 11...Wheel, 12...
Cylinder for rearrangement, 13...Drawer rail,
14...Transverse rearrangement trolley, 16...Transverse rail.

Claims (1)

[Claims] 1. In an electric resistance welded pipe manufacturing facility that manufactures pipes by bending and welding coils, when recombining the rolls of a group of stands for manufacturing said pipes, a recombinant that can simultaneously load new and old rolls for recombining the stand group. The bogie is made up of two types of bogies: a transverse recombinant bogie and a longitudinal recombinant bogie, and these two types of bogies are
In an electric resistance welded pipe manufacturing equipment using a roll changing trolley, which is formed into a comb shape and is characterized in that the rolls are changed by operating both trolleys so that both comb-shaped parts fit into each other. How to change roles.