FIELD OF THE INVENTION

[001] The subject matter in general relates to the field of
manufacturing seamless steel tubes and pipes. More particularly, but not exclusively, the subject matter relates to an apparatus for extracting the plug trapped in a tube during its manufacturing.
BACKGROUND OF THE INVENTION
[002] Background description includes information that may be useful
in understanding the present subject matter. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed subject matter, or that any publication specifically or implicitly referenced is prior art.
[003] Seamless steel tubes are manufactured by cold drawing the
tubes on the draw benches using draw dies and plugs. Draw benches are used for maintaining the external and internal parameters of the tube. The tube is processed with help of a drawing carriage. Outside diameter of the tube varies from 90mm to 133mm and wall thickness varies from 2mm to 12.5mm, with the material grade varying from carbon steel to low alloy steel. Plug is a cylindrical object that is used in the draw bench for maintaining the inner and outer diameter of the tubes while drawing.
[004] During the drawing process, due to some unavoidable
circumstances, like loosening of the plugs, eccentricity & irregular internal profiles of the tubes, increased draw force on the plug, the plug cuts inside and gets released from the adapter. The plug gets trapped inside the tube and comes with the undrawn part of the tube. Finally, the incomplete drawn tube comes out of the draw bench and falls in the collecting trough. The tube is then lifted with the help of an HT Crane and taken out of the

collecting trough and marked for cutting and removing the plug trapped tube area.
[005] Conventionally, the length of the tube within which the plug is
trapped is reduced using a band saw cutting machine so that the tube can be held using a lathe. During the plug removal process, the plug gets scratched and dents are formed due to the rubbing of the plug with the cutting tool. In order to remove the scratches and dents, the plug is loaded onto a centreless grinder. Chamfering operation on both ends of the plug is carried out in the tool and cutter machine. Further, polishing work is done manually by loading the plug on a chuck in a lathe. Finally, the plug is ready to be re used in the draw bench.
[006] The drawbacks of the conventional plug removal processes are listed down below:
• During the removal of the plug using the lathe machine there are chances that the plug may jump out of the machine creating an unsafe condition for the working personnel.
• The tool tip gets blunt due to friction and the constant rubbing of the tool with the plug while turning. As a result, the cutting tool needs to be changed regularly after removing approximately 10 plugs.
• The machining operation reduces the plug dimension due to which the plug cannot be reused. As the plug is made of tungsten carbide, which is expensive, using a new plug every time becomes an expensive affair.
• As multiple operations are to be performed on the tubes, the time required for plug removal is more. Also, the man power, electricity & skill required for all the processes are more.

OBJECTS OF THE INVENTION
[007] In view of the foregoing limitations inherent in the state of the
art, some of the objects of the present disclosure, which at least one embodiment herein satisfy, are listed herein below.
[008] It is an object of the present disclosure to propose a system for
extracting the plug from a tube.
[009] It is another object of the present disclosure to propose a system
that reduces the time taken to extract the plug from the tube.
[0010] It is yet another object of the present disclosure to propose a system that reduces the wear and tear and the damage caused to the plug during the extraction process.
[0011] It is still yet another object of the present disclosure to propose a system that reduces the cost involved in extracting the plug from the tube.
[0012] It is still yet another object of the present disclosure to propose a system for optimum utilization of manpower and resources.
[0013] It is still yet another object of the present disclosure to propose a system that can be used to extract plug from tubes of different sizes.
[0014] It is still yet another object of the present disclosure to propose a system that enhances the safety of the working personnel.
[0015] These and other objects and advantages of the present invention will be apparent to those skilled in the art after a consideration of the following detailed description taken in conjunction with the accompanying drawings in which a preferred form of the present invention is illustrated.

SUMMARY OF THE INVENTION
[0016] This summary is provided to introduce concepts related to a system and a method for extracting plug from a tube. The concepts are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
[0017] The present disclosure relates to a system for extracting plug from a tube. The system comprises a hydraulic jack, a piston slidably connected to first end of the hydraulic jack, a handle connected to second end of the hydraulic jack and a tube holder configured to receive a tube. The hydraulic jack is configured to move the piston. The handle is configured to actuate the hydraulic jack to move the piston. One end of the tube is received by the tube holder and other end of the tube is configured to receive the piston. The movement of the piston inside the tube pushes a trapped plug out from the tube.
[0018] The present disclosure relates to a method for extracting the plug from the tube. The method comprises actuating the hydraulic jack using the handle, wherein the second end of the hydraulic jack is connected to the handle. Moving the piston using the hydraulic jack, wherein the first end of the hydraulic jack is slidably connected to the piston. Placing the tube between the tube holder and the piston such that, one end of the tube is received by the tube holder and the other end of the tube is configured to receive the piston. Extracting the plug out from the tube, due to the movement of the piston inside the tube.

[0019] Other objects, features and advantages of the present disclosure will become apparent from the following detailed description. It should be understood, however, that the detailed description and the specific examples, while indicating specific embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
[0020] While the specification concludes with claims particularly pointing out and distinctly claiming the subject matter that is regarded as forming the present subject matter, it is believed that the present disclosure will be better understood from the following description taken in conjunction with the accompanying drawings, where like reference numerals designate like structural and other elements, in which:
[0021] FIG. 1 is an isometric view of a system for extracting plug from a tube, in accordance with an embodiment;
[0022] FIG.2 is an orthographic projection of handle, hydraulic unit and piston, in accordance with an embodiment;
[0023] FIG. 3 is an isometric view of a tube holder, in accordance with an embodiment; and
[0024] FIG. 4 is an isometric section view of the plug trapped in the tube, in accordance with an embodiment.
DETAILED DESCRIPTION OF THE INVENTION
[0025] The detailed description of various exemplary embodiments of the disclosure is described herein with reference to the accompanying

drawings. It should be noted that the embodiments are described herein in such details as to clearly communicate the disclosure. However, the amount of details provided herein is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims.
[0026] It is also to be understood that various arrangements may be devised that, although not explicitly described or shown herein, embody the principles of the present disclosure. Moreover, all statements herein reciting principles, aspects, and embodiments of the present disclosure, as well as specific examples, are intended to encompass equivalents thereof.
[0027] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms “a”, “an”, and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises”, “comprising”, “includes”, “consisting” and/or “including” when used herein, specify the presence of stated features, integers, steps, operations, elements and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof.
[0028] It should also be noted that in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed concurrently or may sometimes be executed in the reverse order, depending upon the functionality/acts involved.

[0029] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which example embodiments belong. It will be further understood that terms, e.g., those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
[0030] Referring to FIGs. 1, 2, 3 and 4, a system 100 is disclosed for extracting plug 12 from a tube 8. The system 100 comprises a hydraulic jack 2, a piston 6, a handle 1, a tube holder 9, a bottom plate 10, a top plate 5 and a plurality of pillars 7.
[0031] Specifically referring to FIG. 2, in an embodiment, the hydraulic jack 2 is attached to the top plate 5 using two hydraulic jack lock nuts 4, one on each side of the top plate 5 such that the top plate 5 is sandwiched between the hydraulic jack lock nuts 4. First end 13 of the hydraulic jack 2 is slidably connected to the piston 6 and second end 14 of the hydraulic jack 2 is connected to the handle 1.
[0032] In an embodiment, the handle 1 is configured to actuate the hydraulic jack 2, whereby the hydraulic jack 2 moves the piston 6 up and down along direction 15. The piston 6 is configured to move within the tube 8.
[0033] In an embodiment, the tube holder 9 is configured to receive the tube 8 from which the plug 12 is to be extracted. The tube holder 9 (refer FIG. 3) defines multiple steps 16 to accommodate tubes 8 of varying sizes. The tube holder 9 is connected to the bottom plate 10.

[0034] In an embodiment, the tube holder 9 defines a through hole for the extracted plug 12 to pass through and collect in the bottom plate 10.
[0035] In another embodiment, the tube holder 9 itself is configured to collect the extracted plug 12 at the bottom.
[0036] In an embodiment, the bottom plate 10 defines a through hole below the tube holder 9 for the extracted plug 12 to exit the system 100.
[0037] In an embodiment, the plurality of pillars 7 are used to hold the top plate 5 and the bottom plate 10 together. The pillars 7 are arranged along the four edges of the plates 5, 10 and are screwed to the plates 5, 10 using hexagonal nuts 3.
[0038] In an embodiment, the tube 8 within which the plug 12 is trapped is placed between the piston 6 and the tube holder 9 such that one end of the tube 8 is received by the tube holder 9 and the other end of the tube 8 receives the piston 6. The hydraulic jack 2 is actuated using the handle 1. The handle 1 can be manually operated or automatically operated. The handle 1 can be operated by moving it downwards in the direction 15
[0039] The actuation of the hydraulic jack 2 moves the piston 6 downward along the direction 15. The piston 6 forces the plug 12 to exit the tube 8.
[0040] The plug 12 is collected either by the bottom plate 10 or using a collecting bin (not shown) placed below the bottom plate 10.
TECHNICAL ADVANTAGE
[0041] The present disclosure proposes a system that reduces the time taken to extract the plug from the tube.

[0042] The present disclosure proposes a system that reduces the wear and tear and the damage caused to the plug during the extraction process.
[0043] The present disclosure proposes a system that reduces the cost involved in extracting the plug from the tube.
[0044] The present disclosure proposes a system for optimum utilization of manpower and resources.
[0045] The present disclosure proposes a system that can be used to extract plug from tubes of different sizes.
[0046] The present disclosure proposes a system that enhances the safety of the working personnel.
[0047] Furthermore, each of the appended claims defines a separate invention, which for infringement purposes is recognized as including equivalents to the various elements or limitations specified in the claims. Depending on the context, all references below to the “invention” may in some cases refer to certain specific embodiments only. In other cases, it will be recognized that references to the “invention” will refer to subject matter recited in one or more, but not necessarily all, of the claims.
[0048] Groupings of alternative elements or embodiments of the invention disclosed herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified thus fulfilling the written description of all groups used in the appended claims.

[0049] Furthermore, those skilled in the art can appreciate that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. It will be appreciated that several of the above-disclosed and other features and functions, or alternatives thereof, may be combined into other systems or applications. Various presently unforeseen or unanticipated alternatives, modifications, variations, or improvements therein may subsequently be made by those skilled in the art without departing from the scope of the present disclosure as encompassed by the following claims.
[0050] The claims, as originally presented and as they may be amended, encompass variations, alternatives, modifications, improvements, equivalents, and substantial equivalents of the embodiments and teachings disclosed herein, including those that are presently unforeseen or unappreciated, and that, for example, may arise from applicants/patentees and others.
[0051] While the foregoing describes various embodiments of the present disclosure, other and further embodiments of the present disclosure may be devised without departing from the basic scope thereof. The scope of the present disclosure is determined by the claims that follow. The present disclosure is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.

WE CLAIM:

1. A system (100) for extracting plug (12) from a tube (8), the system
(100) comprising:
a hydraulic jack (2);
a piston (6) slidably connected to first end (13) of the hydraulic jack
(2), wherein the hydraulic jack (2) is configured to move the piston
(6);
a handle (1) connected to second end (14) of the hydraulic jack (2),
wherein the handle (1) is configured to actuate the hydraulic jack (2)
to move the piston (6); and
a tube holder (9) configured to receive a tube (8), such that,
one end of the tube (8) is received by the tube holder (9) and
other end of the tube (8) is configured to receive the piston (6);
and
the movement of the piston (6) inside the tube (8) pushes a
trapped plug (12) out from the tube (8).
2. The system (100) as claimed in claim 1, comprising a bottom plate (10), wherein the tube holder (9) is connected to the bottom plate (10).
3. The system (100) as claimed in claim 2, wherein the bottom plate (10) defines a through hole for the extracted plug (12) to exit the system (100).
4. The system (100) as claimed in claim 2, comprising a top plate (5), wherein the hydraulic jack (2) is connected to the top plate (5).

5. The system (100) as claimed in claim 4, comprising a plurality of pillars (7) configured to connect the top plate (5) and the bottom plate (10).
6. The system (100) as claimed in claim 1, wherein the tube holder (9) defines multiple steps (16) to receive tubes (8) of varying sizes.
7. A method for extracting a plug (12) from a tube (8), the method comprising:
actuating a hydraulic jack (2) using a handle (1), wherein a second end (14) of the hydraulic jack (2) is connected to the handle (1); moving a piston (6) using the hydraulic jack (2), wherein a first end (13) of the hydraulic jack (2) is slidably connected to the piston (6); placing a tube (8) between a tube holder (9) and the piston (6) such that, one end of the tube (8) is received by the tube holder (9) and other end of the tube (8) is configured to receive the piston (6); and extracting the plug (12) out from the tube (8), due to movement of the piston (6) inside the tube (8).
8. The method as claimed in claim 7, comprising connecting the tube holder (9) to a bottom plate (10) using screws.
9. The method as claimed in claim 8, comprising exiting the extracted plug (12) from system (100) using a through hole defined by the bottom plate (10).
10. The method as claimed in claim 8, comprising connecting the hydraulic jack (2) to a top plate (5) using a lock nut (4) of the hydraulic jack (2).
11. The method as claimed in claim 10, comprising connecting the top plate (5) and the bottom plate (10) using a plurality of pillars (7).

12. The method as claimed in claim 7, wherein the tube holder (9) defines multiple steps (16) to receive tubes (8) of varying sizes.