JPS6110809Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an apparatus for automatically lubricating a forge welding roll of a forge welding pipe manufacturing machine.

Forge welding pipe making machines are equipped with numerous rolls such as forming rolls, forge welding rolls, and reducing rolls to form the pipe making process.
Since these rolls come into contact with high-temperature materials, they are all equipped with a cooling device using cooling water.
Generally, the rolls are not cooled. However, engagement with the red-hot coil often causes seizure of the rolls, which often requires a temporary shutdown of the mill to service the rolls. For this reason, the work efficiency is reduced, which causes a reduction in the unit consumption of the roll.

The purpose of the present invention is to provide a device that automatically lubricates the rolls during the temporary threading of pipe material, thereby eliminating this type of conventional drawback, and at the same time improving work efficiency during general forge welding work. It is about improving.

As shown in FIG. 1, all of the forge-welded rolls 1 originally provided on the stand are grooved with means for supplying cooling water to each roll to cool the rolls. At the same time, in order to prevent this cooling water from scattering and being sprayed onto the material in the pipe manufacturing process, a convexly curved draining plate 2 that matches the concavely curved shape of the roll surface.
are arranged symmetrically on both sides of the roll 1 as shown in FIG. The present invention utilizes the existence of this drain plate 2, and each drain plate is provided with the same structure.

As shown in FIGS. 3 and 4, the drain plate 2
In this case, this is not just a plate, but a frame that is hollow in the thickness direction. The cavity 21 is provided in a direction passing through the roll engagement surface, and forms an opening over the entire length of the roll engagement surface. A plate-shaped solid lubricant 3 having the same shape as the space 21 of the drain plate 2 is inserted into the space 21 of the drain plate 2. The solid lubricant 3 is inserted into the cavity 21 so as to be slidable in the penetrating direction, and the end surface that engages with the roll surface has a convex curve similar to the roll engagement surface of the draining plate 2. This allows the end face of the draining plate 2 and the end face of the solid lubricant 3 to form substantially the same curved surface.

A fluid cylinder 4 is disposed on the rear end side of the draining plate 2 so that the solid lubricant 3 fitted into the roll 2 can be brought into pressure contact with the roll 1. The solid lubricant 3 is adhesively fixed to a sliding plate 41 at the tip of the cylinder rod, and can be slid back and forth within the space of the drain plate 2 by the operation of the fluid cylinder 4.

Next, the operation of this device will be explained. Forge welding rolls used for temporary passing of pipe material are not water-cooled. At this time, the fluid cylinder 4
is operated to press the end surface of the solid lubricant 3 provided on the draining plate 2 to the roll surface of the forge-welded roll 1. The solid lubricant 3 is centripetally pressed from the diametrical direction of the roll circumferential surface and applies the lubricant to the roll surface. When the pipe-making process begins and cooling water begins to be supplied to the roll 1, the fluid cylinder 4 is moved back to draw the solid lubricant 3 into the space in the drain plate 2, and the drain plate 2 is replaced with just cooling water. Used as a scattering prevention plate. Further, during pipe manufacturing, it is also possible to use both cooling water supply and solid lubricant. fluid cylinder 4
The operation is performed remotely in a control room separate from the pipe making machine.

According to the device of the present invention, the surface of the forge welding roll can be lubricated even during temporary passing without cooling water supply, so it is possible to prevent failure of the mill due to roll seizure and deterioration of the roll consumption rate. can. Furthermore, the device itself is easy to install because it utilizes drain plates attached to all rolls.

[Brief explanation of the drawing]

FIG. 1 is a partial schematic explanatory diagram of a forge welding line showing the arrangement of forge welding rolls and drain plates. FIG. 2 is an enlarged perspective view of the forge welding roll. FIG. 3 is a perspective view of the drain plate according to the device of the present invention. FIG. 4 is a sectional view taken along the - line in FIG. 3. 1: Forge-welded roll, 2: Drain plate, 3: Solid lubricant, 4: Fluid cylinder.

Claims (1)

[Scope of utility model registration request] A draining plate formed in a hollow frame body with a space fixedly arranged to engage the roll surface of the forge welded roll at right angles and passing through the surface facing the roll, and a curved surface that is the same as the roll opposing surface of the draining plate. A plate-shaped solid lubricant having an end face and slidably inserted into the cavity of the drain plate, and a fluid cylinder device that moves the solid lubricant into and out from the roll engagement side of the drain plate. Automatic lubrication device for forge welding rolls in pipe machines.