PIPE FLANGER

Abstract

A pipe flaring tool characterized in that it comprises: - an inner part (1), - an outer part (2), and - a screw (3), wherein - the two parts (1, 2) have a cylindrical configuration with an open and a closed end, - the inner diameter of the outer part (2) is equal to the outer diameter of the inner part (1), - the closed end of the inner part (1) comprises a threaded hole (4) located in the center, - the closed end of the outer part (2) comprises a through hole (5) located in the center, - the inner part (1) is intended to be inserted into the outer part (2) such that the two open ends are oriented in the same direction, - the screw (3) is intended to be inserted into the through hole (5) and engaged in the threaded hole (4).

Description

PIPE FLANGER OBJECT OF THE INVENTION The present invention relates to a tube flaring tool that is inserted into one end of a plastic tube intended to be flared, either to be joined to another similar tube and thus lengthen it, or to insert any other accessory, being configured to be subsequently removed. BACKGROUND OF THE INVENTION In the current state of the art, it is very common to have to extend plastic pipes. These pipes can be simply conduits for the gravity-fed transfer of liquids, such as building downpipes, or for the pressurized transfer of liquids. In the first case, the pipes are simply fitted together with the only requirement being that the joint is sealed to prevent the transmission of odors. In the case of pressurized liquids, the joint must be much more careful, as the pressurized liquid will tend to escape through any poorly sealed gap in the joint. While the first option has virtually no technical merit, the second option does. Thus, new developments have been created in this area, not only in how to create this sealed joint, but also in making it easily applicable for an operator working with the ducts. Document ES1065764U refers to a metal piece that is inserted inside the tube to be flared, turned and, after allowing it to cool for a few seconds, turned again in the opposite direction to remove it from the tube. DESCRIPTION OF THE INVENTION The present invention relates to a tube flaring tool, preferably made of plastic material, comprising the following elements: an interior piece, an exterior piece, and a screw. The two pieces have a cylindrical configuration with one of the bases closed and the other base open, i.e., non-existent. The base of the inner part comprises a threaded hole, while the base of the outer part comprises a through hole or simply a through hole. The inner piece is intended to be inserted into the outer piece, so that the two open bases are oriented in the same direction. Both the threaded hole and the through hole are located in the center of the corresponding base, so once the inner piece is inserted into the outer piece, the holes are aligned. In this way, the screw is intended to be inserted into the through hole to pass through it and be coupled into the threaded hole. With this arrangement, the flaring machine operator is in a working position. To flare a tube, it is preferably heated so that it is easier to deform when introducing the flaring tool of the invention. Preferably, the parts used to manufacture the flaring tool are metallic, although this requirement is not necessary. Then, you simply insert the inner piece into the tube until you reach a certain depth. This depth will create a flared section in the tube; that is, the area where the extension tube will be inserted. Heating the tube to be flared will deform it, making it very easy to insert the flaring tool. Additionally, rotating the inner piece to facilitate insertion into the tube. Once the inner piece is inserted into the tube, it must be allowed to cool so that it takes its final shape. This will cause the tube, after expanding, to contract slightly, making the removal of the inner piece difficult. To carry out the extraction of the inner piece, proceed as indicated below. Initially, the outer piece is placed embracing the inner piece and supporting the thickness of the outer piece on the thickness of the tube in the flared area Next, the screw is inserted through the through hole in the outer piece until it engages with the threaded hole in the inner piece. This operation is very simple, since the through hole and the threaded hole are centered in their respective bases and are therefore aligned, as detailed above. Once the screw is inserted into the threaded hole, the user simply turns it to tighten it further. This action causes the screw to tighten until the screw head makes contact with the outer part. From that point on, as the screw continues to be turned, the inner part will screw onto the screw and be extracted from the tube, similar to removing a cork with a corkscrew. On the other hand, it is also preferable for the outer part to be metallic. This gives the flaring tool a more robust and resistant configuration to the stresses it will be subjected to. DESCRIPTION OF THE DRAWINGS To complement the description being made and in order to help a better understanding of the characteristics of the invention, according to a preferred embodiment thereof, a set of drawings is included as an integral part of said description, in which, for illustrative and non-limiting purposes, the following has been represented: Figure 1.- Shows a side view of the tube flaring tool of the invention. Figure 2.- Shows an exploded side view, with a slight perspective, of the tube flaring tool of the invention. Figure 3.- Shows a cross-sectional side view of the tube flaring tool of the invention attached to a tube after it has been flared and during the extraction process. The following is a list of the different elements represented in the figures with their associated numerical references: 1. Inner piece. 2. Outer piece. 3. Screw. 4. Threaded hole. 5. Through hole. 6. Thickness of the outer piece. 7. Plastic tube. 8. Flared area. 9. Thickness of the flared area of ​​the tube. PREFERRED EMBODIMENT OF THE INVENTION A preferred embodiment of the tube flaring tool according to the present invention is described below with the help of figures. In Figure 1, it can be seen that the flaring tool comprises an inner piece (1), of cylindrical configuration, inserted at one end into an outer piece (2), also of cylindrical configuration, from which a screw (3) protrudes. Figures 2 and 3 show more clearly how these elements are coupled. Figure 3 in particular shows the way the flaring device of the invention works. The outer piece (2) is open at one end while the other is closed and has a through hole (5) for insertion of the screw (3). The inner piece (1) has a similar configuration. Thus, it is also open at one end while the other is closed and has a hole, although this hole is a threaded hole (4), intended for the coupling of the screw (3). The inner part (1) is configured to be inserted into the outer part (2), while the screw (3) is intended to be inserted into the outer part (2) through the through hole (5) to be threaded into the threaded hole (4) of the inner part. This configuration of the elements forms the flaring tool of the invention, as can be seen in Figure 3. The following describes how to use it, as shown in Figure 3. Initially, a tube (7) with one end intended to be flared is considered. To achieve this, the inner piece (1) is inserted into the end under pressure to deform the tube (7) and form a flared section (8), defined by a specific length of the tube (7) from the end. This flared section (8) will have an internal diameter that is the same as the external diameter of the inner piece (1). To achieve this flare, the end of the tube is preferably heated before inserting the inner piece (1) by rotating it. However, once the flaring is carried out, both the tube (7) and the inner piece (1) must be allowed to cool so that the flared section (8) reaches its final dimensions. This makes it difficult to remove the inner piece (1) from the tube (7), to the point of being impossible to remove it, due to the contraction that the tube (7) undergoes upon cooling, trapping the inner piece (1). To remove the inner part (1), use the outer part (2) and the screw (3) as follows. The outer piece (2) has diameters similar to those of the flared area (8). In this way, the thickness of the outer piece (6) rests on the thickness of the flared area (8) of the tube (7), with the inner piece (1) inserted into the outer piece (2) and the threaded (4) and through (5) holes aligned. Then, the screw (3) is inserted into the through hole (5) of the outer part (2) until it engages with the threaded hole (4) of the inner part (1). In this situation, the user only needs to operate the screw (3), turning it in, so that the screw (3) is inserted into the threaded hole (4) of the inner part (1) until the head of the screw (3) reaches the base of the outer part (2), at which point the screw (3) can no longer be inserted into the inner part (1). At this point, the inner part (1) moves along the thread of the screw (3), coming out of the tube (7). As can be seen in Figure 3, on the one hand, the inner (1) and outer (2) pieces are coupled with the open bases oriented in the same direction, so that the threaded (4) and through (5) holes are in contact position to be subsequently inserted by the screw (3). On the other hand, it is also important that the screw (3) is longer than the length of the outer piece (2). This way, if the inner piece (1) is completely embedded in the flared area (8) of the tube (7), when the outer piece is placed, the screw (3) will always be able to fit into the threaded hole (4).

Claims

1. A pipe flaring tool characterized in that it comprises: - an inner part (1), - an outer part (2), and - a screw (3), wherein - the two parts (1, 2) have a cylindrical configuration with an open and a closed end, - the inner diameter of the outer part (2) is equal to the outer diameter of the inner part (1), - the closed end of the inner part (1) comprises a threaded hole (4) located in the center, - the closed end of the outer part (2) comprises a through hole (5) located in the center, - the inner part (1) is intended to be inserted into the outer part (2) such that the two open ends are oriented in the same direction, - the screw (3) is intended to be inserted into the through hole (5) and engaged in the threaded hole (4).

2. The pipe flaring tool of claim 1, wherein the inner part (1) is metallic.

3. The tube flaring tool of claim 2, wherein the outer part (2) is also metallic.