Technical field to which the invention relates:

The invention relates to the welding machine that provides the joining of polyethylene pipes with heat generated by friction.

In particular, the invention relates to the welding machine that enables two polyethylene pipes to be welded together or a polyethylene pipe to be welded together with a spacer.

State of the art:

The resistance of the polyethylene pipe raw material against acids and friction is a nonpolar material since the polyethylene raw material has a very high molecular weight. For this reason, it shows good resistance to chemicals. After reducing the pressure requested in natural gas pressure reduction stations, its distribution is provided by polyethylene pipes. Polyethylene pipes used in gas transportation are produced according to TS EN 1552-2 standard.

In the present technique, the joining process of pipes is done in many different ways. There are different welding methods in current applications. These methods are butt welding method, electrofusion welding method, and coupling method. The butt welding method, it is a connection method performed by joining pipes of the same diameter and wall thickness with the help of pressure and temperature. The mouth parts of the tools to be butt welded are cut neatly and heated up to the melting temperature. Since this process requires high craftsmanship and mastery, problems often arise. In addition, this process takes a lot of time. Butt welding method cannot be used on pipes with a wall thickness of less than 5 mm. The coupling method cannot be used on pipes with large diameters. Another welding method used in the state of the art is computer controlled welding with an electrofusion welding machine. The controls of the electrofusion welding machine are provided by microprocessors. The welding information of the fasteners is entered into the machine with barcodes or manually. In this welding method, welding is done with heating resistors in the sleeve part. Due to this temperature difference, pressure builds up inside the pipe, and welding takes place thanks to the pressure on the pipe and the pressure inside the pipe. However, the cost of using this method is quite high.

Plastic pipe welding machines of different types and sizes are produced and used in order to perform the plastic welding process. In plastic pipe welding machines, depending on the type and dimensions, the desired welding initials are used in suitable sizes for the welding process of plastic pipes and plastic pipe spacers joined by welding. In order to carry out the welding process, these initials must be heated to the required temperature.

The heating of these welding threads is provided with the help of a metal pipe sheathed heating resistor or resistors inside the aluminum heating plate. The temperature of the metal tube sheathed heating resistor or resistors inside the aluminum heating tray must be fixed at the desired temperature. If the heat resistance is not fixed, unwanted excessive heat is generated throughout the aluminum heating plate and the machine. The desired plastic welding process cannot be performed in a healthy way due to the overheating of the machine. In addition, overheating damages the machine elements and causes the machine to become unusable.

The invention, which is the subject of the patent numbered "TR 2017/16236", which is in the state of the art, is related to the polyethylene pipe repair and coupling sleeve, which is used to eliminate malfunctions in the polyethylene pipelines and to join the pipes to each other. The inner surface of the gasket, which is tightened using bolts over the body sheets, includes at least three rows of penetrating nail groups that are inserted into the slippery-surfaced pipe. The invention, which is the subject of the patent numbered "CN20828164711", which is in the state of the art, is related to a system that can be placed in a fixed way in order to solve the problem that the connection between the polyethylene drainage pipes is inconvenient, the connection cannot be placed and the connection cannot be established. Electric resistance wire is used in the invention.

The invention, which is the subject of the patent numbered "TR 2020/16664", which is in the state of the art, is used in all areas where plastic pipes are used, especially in agricultural irrigation, relates to the coupling flange consisting of two sets. After the male part and the female part are mounted on two separate pipes, they are mutually connected to each other and they perform the joining process. However, the cost of using this method is quite high.

As a result, due to the negativities described above and the inadequacy of the existing solutions on the subject, it was necessary to make an improvement in the relevant technical field.

Brief Description and Objectives of the Invention

The invention relates to the welding machine that meets the above-mentioned requirements, eliminates all disadvantages, and brings some additional advantages, enabling the welding of polyethylene pipes or spacers with polyethylene pipe.

The most important aim of the invention is to perform the welding process of polyethylene pipes or spacers with the desired wall thickness, regardless of the wall thickness. At the same time, polyethylene pipes with different thicknesses were also welded together. For this purpose, there are lower and upper tools in the system in order to make adjustments according to the thickness of the spacer to be welded to the polyethylene pipe or polyethylene pipe.

Another aim of the invention is to provide a rapid repair of faults that may occur in pipelines under irreparable conditions. Another aim of the invention is to provide the weiding machine in which energy consumption is reduced to a minimum. For this purpose, no heater is used in the system, and the heat generated by the friction of the pipes is ensured to be used.

Another aim of the invention is to prevent the polyethylene pipe or the spacer to be welded to the polyethylene pipe from slipping out during the rotation process by being driven by the electric motor by using compression mechanisms.

Description of Figures:

FIGURE-1 ; is the drawing that gives the disassembled view of the tools in the polyethylene pipe welding machine, which is the subject of the invention.

FIGURE-2; is the drawing that gives the appearance of the splined joint sleeve in the polyethylene pipe welding machine, which is the subject of the invention.

FIGURE-3; is the drawing that gives the closed view of the pulley on the polyethylene pipe welding machine, which is the subject of the invention.

FIGURE-4; is the drawing that gives the appearance of a pulley on the polyethylene pipe welding machine, which is the subject of the invention.

FIGURE-5; It is the drawing that gives the compressed state of the polyethylene pipe in the welding machine, which is the subject of the invention.

FIGURE-6; is the drawing that gives the appearance of the welding machine which is the subject of the invention.

FIGURE-7; It is the drawing that gives the front view of the machine in which the pipe is compressed in the welding machine, which is the subject of the invention. FIGURE-8; is the drawing that gives the front view before the pipe is compressed in the welding machine, which is the subject of the invention.

FIGURE-9; is the drawing that gives the right side view of the welding machine which is the subject of the invention.

FIGURE-10; is the drawing that gives the top view of the welding machine which is the subject of the invention.

FIGURE -11 ; is the drawing that gives the appearance of the protruding sleeve on the welding machine, which is the subject of the invention.

FIGURE-12; The subject of the invention is the drawing that gives the appearance of the sleeve attached to the welding machine.

FIGURE-13; is the drawing that gives the front view of the attached state of the sleeve in the welding machine, which is the subject of the invention.

FIGURE-14; is the drawing that gives the front and isometric view of the mechanism in the welding machine, which is the subject of the invention.

FIGURE-15; is the drawing that gives the appearance of the clamping of the part with a wrench in the welding machine, which is the subject of the invention.

Definitions of Elements of the Invention

To explain the polyethylene pipe welding machine developed with this invention better, the sets and elements in the figures are numbered, and the equivalent of each number is given below:

1. Lower set

Detailed Description of the Invention

The invention relates to the welding machine that provides the joining of polyethylene pipes with heat generated by friction. In particular, the invention relates to the welding machine that enables two polyethylene pipes to be welded together or a polyethylene pipe to be welded together with a spacer.

Polyethylene pipe welding machine with isometric view in Figure-1 ; the lower set (1 ), which is the sleeve bearing (6.1 ) adjacent to which the sleeve (6) is supported and is joined by the upper set (2) and the Side set (3); the upper set (2), which is the sleeve bearing (6.1 ) adjacent to the sleeve (6) and is joined by the lower set (1 ) and the side sets (3); the side set (3), which enables the lower set (1 ) and the upper set (2) to be brought closer to each other, and to open and close the lower set (1 ) and the upper set (2) with the rod (4) positioned inside; the rod (4), which enables the opening and closing of the lower set (1 ) and the upper set (2) and the synchronous rotation of the end parts with the contact of the holes in the upper cover (5), thanks to the gears in these holes; the upper cover (5), which is adjacent to the upper part of the sleeve bearing (6.1 ) and provides synchronized movement of the rod (4) located in the inner parts of the side sets (3) by containing holes containing threads on the side facing the sleeve bearing (6.1 ); the sleeve (6), through which the pipe or spacer to be welded is passed by positioning it between the sleeve bearing (6.1 ) adjacent to the lower set (1 ) and the other sleeve bearing (6.1 ) located in the upper set (2); sled (7), which enable the pipe holder (10), on which the polyethylene pipe or spacers to be welded, are passed, to be brought closer to each other by turning the steering wheel (8); pipe holders (10) through which the polyethylene pipe or spacers desired to be welded are passed, and which are brought closer together by the slide (7), which is triggered by the rotation of the steering wheel (8); After the polyethylene pipes or spacers, which are clamped between the lower set (1 ) and the upper set (2) on both sides of the polyethylene pipe welding machine, are brought closer to each other with the movement of the sled (7), the motor that drives the surfaces facing each other to touch and rub against each other, contains. It also includes a key (11 ) that prevents the polyethylene pipe or spacer, positioned between the lower set (1 ) and the upper set (2), from escaping from the welding machine and being thrown away. The key (11 ) is shown in Figure-15 and is passed through the hole in the upper cover (5).

The polyethylene pipes or spacers to be welded are passed through the pipe holder (10) shown in Figure-4. Polyethylene pipes or spacers placed in the pipe holder (10) move on the sled (7). The movement of the sled (7) is realized by turning the steering wheel (8). When the steering wheel (8) is turned, the sled (7) also moves, and the polyethylene pipe or spacers in the pipe holders (10) approach or move away from each other. Pipe holders (10) are wide enough to pass the polyethylene pipes to be joined.

As can be seen in Figure-4 and Figure-5, the sleds (7) are located on both sides of the junction of polyethylene pipes or spacers.

In the machine developed with the invention, the polyethylene pipe or spacers, which are brought closer to each other by the movement of the sleds (7), are made from the sleeve (6), which is positioned between the sleeve bearing (6.1 ) adjacent to the lower set (1 ) and the sleeve bearing (6.1 ) located in the upper set (2). is passed. With the use of a single sleeve (6), welding can be performed to connect two polyethylene pipes or a polyethylene pipe and the spacer to each other. In the machine developed with the invention, the sleeve (6) is notched in order to prevent slipping. However, the unnotched sleeve can also be used.

The process of bringing the lower set (1 ) and the upper set (2) closer to each other is called assembling. This is carried out with the side set (3), which acts as a slide on their sides. Polyethylene pipes or spacers to be welded are compressed as a result of the movement of the lower set (1 ) and the upper set (2) to get closer to each other by using the side set (3). The movement of the mechanism formed by the lower set (1 ), the upper set (2), and the side set (3) to compress the polyethylene pipe or the spacer to be welded is provided by the key (11 ). In this way, the polyethylene pipe or the spacer positioned between the lower set (1 ) and the upper set (2) is prevented from escaping and being thrown out of the welding machine. An approximate view of the polyethylene pipe or spacer to be joined is shown in Figure-5.

There are rods (4) on the inside of the side sets (3). In order to enable the opening and closing of the lower set (1 ) and the upper set (2), half of the rods (4) are manufactured as right teeth and the other half as left teeth. The ends of the rods (4) rotate synchronously thanks to the gears in the upper cover (5).

The polyethylene pipes or spacers, which are clamped between the lower set (1 ) and the upper set (2) on both sides of the polyethylene pipe welding machine and desired to be welded, are rotated with the power coming from the engine and friction of the surfaces facing each other is provided. Using the machine developed with the invention, welding a polyethylene pipe with another polyethylene pipe or a polyethylene pipe with any spacer can be accomplished with the heat generated as a result of rubbing against each other. Thanks to the heat arising from the friction force, the welding process is realized and the pipes are joined with each other.

The working steps of the welding machine, which enables the joining of polyethylene pipes with spacers or another polyethylene pipe, can be summarized as follows:

❖ Inserting the key (11 ), ❖ After the sleeve (6) is seated on the sleeve bearing (6.1 ), tightening it by turning the key (11 ) to the right for its connection to the pipe welding machine,

❖ Passing the polyethylene pipes or the spacers to be joined with the polyethylene pipe through the pipe holder (10),

❖ Bringing the polyethylene pipes passed through the sled (7) and the pipe holder (10) or the spacers to be joined with the polyethylene pipe by turning the steering wheel (8) closer to each other,

❖ The sleeve (6) starts to be rotated by the motor drive,

❖ Moving the polyethylene pipes that are brought closer together or the spacers to be joined with the polyethylene pipe from the sleeve (6) towards the center,

❖ The faces of the polyethylene pipes or the spacers to be joined with the polyethylene pipe, which faces each other, are rotated by the motor drive and rubbed against the sleeve (6),

❖ Welding polyethylene pipes or spacers together with the heat energy generated by the friction process,

❖ Stopping the motor,

❖ Ensuring that the sleeve (6) is released by turning the key (11 ) to the left.

The polyethylene pipe welding machine developed with the invention can be used in all pipes regardless of the wall thickness of the polyethylene pipe. In order for the polyethylene pipe welding machine to be used for every pipe or spacer, it is sufficient to choose the diameters of the Sleeve (6) smaller than the pipe diameters. For example, for a pipe with a diameter of 75 mm, the inner diameter is between 60 mm and 75 mm, for a pipe with a diameter of 90 mm between 75 mm and 90 mm, for a pipe with a diameter of 110 mm between 95 mm and 110 mm, for a pipe with a diameter of 63 mm between 50 mm and 63 mm A sleeve (6) should be selected between 100 mm and 125 mm for a pipe with a diameter of 125 mm, between 120 mm and 140 mm for a pipe with a diameter of 140 mm, and between 140 mm and 160 mm for a pipe with a diameter of 160 mm. Polyethylene pipe welding machine is produced with injection machine.