FIELD OF INVENTION
The present invention is generally related to manufacturing process of seamless tubes. More particularly, the invention relates to the designing of modified and improved lubrication system for facilitating uninterrupted lubrication of the bearings for all grades of grease assembled in push bench stand rolls assembly.
BACKGROUND OF THE INVENTION
In the manufacturing of the seamless tube, hot rolling is metal working process where the cross pierced elongated bottle material is pushed by using a preheated mandrel through series of push bench stands assembled in the ring bed. Here, the number of push bench consists of stands ranging from 9-12 where the range depends on the size of the hollows to be made. Each push bench has three rollers and two bearings for each other. All of the mentioned six bearings are required to be lubricated by grease in each push bench. Further, all the aforementioned three rollers are fixed 120 degree apart circumferentially with the shaft assembly, greasing system, and covered with a cover plate with proper fasteners. It is to be noted that, the - primary purpose of the greasing system is to prevent jamming of the bearings If there occurs an insufficiency in the lubrication, the rollers get broken leading to sticker of push bench and the whole automated manufacturing process of seamless steel will shut down till the repair work gets completed.
Further, Figure 1 shows the conventional lubrication system having distributor rectangular body (01) which further comprises shaft and spools internally to actuate the grease for the roller bearings. Further, when the grease is supplied through inlet connector (03), the lubricant comes out through the 6 outlets (02) to reach the bearings for lubrication. Furthermore, the distributor assembly is fixed to the stand through stubs (04) provided on the opposite side of the rectangular body (01). In said conventional lubrication system, the internal

parts often gets stuck up due to complicated mechanism and construction with servicing also becoming complicated and time consuming. Additionally, said complex mechanism servicing generally takes two shifts which shall affect the regular production, thereby also increasing the bearing consumption as well as roller consumption. Thus, clearly the shank and pool mechanism has its advantages which would be obvious to the person skilled in the art.
Moreover, the art offers a variety of mechanisms for designs and manufacturing of lubrication system and process used for lubrication of the bearings during rolling of seamless tubes. For example, the prior arts disclose a hollow metal blank which is rolled forward upon an advancing hollow tapered madrel to reduce the wall thickness of the blank in longitudinally spaced steps and thereby elongate it and form gaps around the mandrel between those steps. Lubricant is forced into the mandrel and discharged laterally from it into at least one of the said gaps to file it. The lubricant is prevented from flowing from the gaps back into the mandrel as the gaps are shortened by advancing mandrel, so the shortening of the gaps with their restricted rear end increases the pressure on the lubricant above the supply pressure. In the aforesaid invention, the mechanism of lubrication involves moving parts.
Thus, in view of the foregoing, the knowledgeable in the art would appreciate that in light of the highlighted shortcomings of the conventional lubrication system there is a need to configure, design and construct a lubricant system without using the shank and spool mechanism.
OBJECTS OF THE INVENTION
An object of the invention is to overcome the aforementioned and the other drawbacks in the existing system and methods.

Another object of the invention is to propose an improved lubrication distributor for continuous greasing of the bearings assembled in push bench stand rolls assembly.
Still another object of invention is to propose a unique distributor assembly without shank and spool mechanism.
Yet another object of the invention is to develop an improved lubricant distributor for uninterrupted supply of lubricant to the bearings of the stand rolls assembly.
Another object of the invention is to develop a modified lubrication distributor for effective greasing of the bearing for uninterrupted mill operation.
SUMMARY OF THE INVENTION
The present application discloses an improved lubrication distributor.
In another aspect, the present application discloses a method for manufacturing.
The above and additional advantages of the present invention will become apparent to those skilled in the art from a reading of the following detailed description when taken in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
The invention is described with the help of Figures 1 to 7, where:
Figure 1: illustrates a schematic diagram of the conventional lubricant distributor design.
Figure 2: illustrates a lubricant distributor with only one inlet and six different outlets according to an embodiment of the invention.

Figure 3: illustrates a cover plate welded on the one side of the lubricant holder, opposite to inlet hole.
Figure 4: illustrates the four holes drilled with clamp plate for clamping the proposed lubricant distributor.
Figure 5: illustrates the lubricant distributor mounted on a push bench stand.
DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT OF THE INVENTION
Although the disclosure hereof is detailed and exact to enable those skilled in the art to practice the invention, the physical embodiments herein disclosed merely exemplify the invention which may be embodied in other specific structure. While the preferred embodiment has been described, the details may be changed without departing from the invention, which is defined by the claims.
It will be apparent, however, to one of ordinary skill in the art that the present invention may be practiced without specific details of the well-known components and techniques. In other instances, well known components or methods have not been described in detail but rather in figures in order to avoid unnecessarily obscuring the present invention.
Further, specific numeric references should not be interpreted as a literal sequential order. Thus, the specific details set forth are merely exemplary. The specific details may be varied from and still be contemplated to be within the scope of the present invention. The features discussed in an embodiment may be implemented in another embodiment.
Turning now to Figure 2, the lubricant holder (05) has six outlet ports circumferentially with equal spacing and having internal thread to connect outlet tubes. The clamp plate (09) is drilled with four holes for fixing in the

stand of the push bench and prior to fixing the clamp plate (09) is welded with cover plate (06).
Further, in Figure 5, is shown, the lubricant holder with the opening side being welded with cover plate (06) and the other side inlet nipple (07) being connected with lubrication tube. The clamp plate (09) is drilled with four holes for fixing the stand of the push bench and prior to fixing the clamp plate (09) is welded with cover plate (06). With this construction features, the lubricant medium (grease) is pumped through the inlet nipple (07) at the rate of 4 kg/ sq.cm pressure and distributed through six outlet nipples (08) for lubricating the bearings of the rollers assembled in the push bench stand (not shown). Thus, without internal parts in the lubricant holder (05) free flow is ensured with the pumping pressure of 4 kg/sq.cm itself and there is possibility of forming dust and dirt inside the lubricant holder even there is some mix-up in the lubricant medium. Hence, this device is suitable for all grades of lubrication.
Further, with the above-improved lubricant distributor, the free flow of the lubrication is ensured with pumping pressure of 4 kg /sq.cm without internal parts in the lubricant holder (05). But there is possibility of forming dust and dirt inside the lubricant holder. As the connectors (of similar dimensions) are joined with respective bearings through copper tubing and the lubricant is pumped through central hole inlet of the distributor and the lubricant reach through copper tubing to all the six bearings of the roller. The continuous flow of the lubricant is ensured as there are no moving parts inside the distributor.
Fig.3 shows configuration of cover plate welded with one inlet and six outlet connectors assembled in the developed distributor.
Further, in Fig. 4 illustrates for clamping the distributor assembly four holes are drilled on the clamp plate.
Herein, the number of outlet tubes is same as outlet nipples/ports and the inlet lubrication tube is only one since the inlet nipple is also one.

Associated Advantages
I. Uninterrupted lubrication
II. Simple mechanism
III. Single solid block
IV. Easy to manufacturing
V. Servicing not required
VI. Reduction in bearing consumptions
VII. Fixed roller consumption
VIII. Man hour spent on sticker removal is totally eliminated
IX. Mill down time due to roll jam is avoided
X. Consumption of lubrication without dust and dirt.
XI. As the continuous operation is ensured, there is no need for replacement of bearings and rollers.
XII. Low maintenance cost, servicing not required.
XIII. Roller jam is totally eliminated and hence sticker is avoided.
XIV. Simple and reliable mechanism.
XV. Accepts all grades of lubrication.
The foregoing is considered as illustrative only of the principles of the invention. Furthermore, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the

exact construction and operation shown and described. While the preferred embodiment has been described, the details may be changed without departing from the invention, which is defined by the claims.

We claim
1. An improved lubricant distributor for continuous greasing of the
bearings assembled in push bench stand rolls assembly, comprising:
a lubricant holder (5) having a centrally drilled inlet hole (11) and six outlet ports (08) designed circumferentially along the lubricant holder (5) with equal spacing, said six outlet nipples (08) and the centrally drilled inlet hole (11) each having an internal thread for connecting a plurality of outlet tubes and a plurality of inlet lubrication tubes respectively, said inlet lubrication tubes further connected to an inlet nipple (7) and said outlet tubes connected to the six outlet nipples (8);
a clamp plate (9) drilled with four holes and welded with cover plate (6), said clamp plate (9) drilled with four holes and welded with cover plate (6) being fixed on a stand of a push bench.
2. The lubricant distributor as claimed in claim 1, wherein lubricant medium is pumped via the inlet nipple (07) at the rate of 4kg/sq.cm pressure which is further distributed via six outlet nipples (08) for lubrication of bearings of rollers arranged in the push bench stand.
3. The lubricant distributor as claimed in claim 1 is a circular lubricant distributor.
4. The lubricant distributor as claimed in claim 1, wherein the lubricant medium is grease.
5. A method for manufacturing an improved lubricant distributor used for continuous greasing of the bearings assembled in push bench stand rolls assembly, comprising:

designing an inlet nipple (7) and six outlet nipples(8) circumferentially with equal spacing and covering the inlet nipple (7) and six outlet nipples(8) by welding a cover plate (6);
machining the inlet nipple (7) and the six outlet nipples(8) with internal thread for connecting with a plurality of threaded connectors of similar dimension;
connecting each of the plurality of threaded connectors to a plurality of outlet tubes and a plurality of inlet lubrication tubes said inlet lubrication tubes further connected to an inlet nipple (7) and said outlet tubes connected to the six outlet nipples(8).