TH29528B - Methods and systems for branch formation in polymer pipes using hot liquids to plastisize sections of the pipe wall, which are then displaced to form the branch. - Google Patents

Abstract

DC60 (11/06/53) Method for forming branches in pipes made of polymer material that allows connection to other pipes that will be created at that branch. This method consists of the following steps: - Making a hole in the polymer tube wall - Heating the tube surface by a liquid path that softens the polymer material in a local way. highly. - A cylindrical builder or pin with a cone-like front end is drawn through a soft material. To deform the wall of the pipe that is placed against the mold or casing, by this method create a uniform branch. also disclosed a system for implementing this method. A method for creating a branch in a pipe made of polymer material that allows it to be connected to another pipe to be made at that branch. This method consists of the following steps: - Making a hole in the polymer tube wall - Heating the tube surface by means of a liquid that softens the polymer material in the tube. Highly peculiar - the cylindrical builder or pin with a cone-like front end is drawn through a soft material. To deform the wall of the pipe that is overlapped with the design or casing, by this method create a uniform branch. also disclosed a system for performing this method:

Claims (9)

1. A method for creating branches in the pipeline of polymer materials. Characterized by the procedure: - Making circular holes in the wall of the steel pipe, such holes are considerably smaller than the size of the branch to be constructed; - the use of one end of the inaccessible external cylindrical die with the outer wall of the main pipe sharing the center with such a circular hole; With a cone-like front end, enters the main tube through one end; - pulling the forming unit against one end of the pusher leading into the main pipe through the circular hole; - heating part of the external surface of the pipe wall is defined by the said external mold, in which the hot liquid dispenser and the hot liquid flow out of the mold. Where the liquid is heated to a temperature less than the melting temperature of the polymer material. To plasticizer, but to prevent polymer cracking in the pipe wall Where the plasticizer material was intended to form branches; - Gradual extraction of the forming unit externally through the plasticized wall part, co-axially with the mold inside the cylinder. In this way, the polymer material was replaced by the plastic of the pipe wall size, with such a branch forming a protrusion that is generally the shape of the pipe section protrusion from the main pipe wall. 2. Method according to claim 1, which characterizes the effect that the hot liquid is pumped into the outer mold. As soon as the traction forming unit is pulled against the pipe wall and simultaneously presses the outer surface of the pipe wall, it is in contact with air. The inlet does not meet the end of the outer mold, where the liquid covers part of the outer tube wall that is defined by the outer mold. 3. Method according to claim 2, that characterizes that liquid That is hot circulating like Continuous intermittent between the inside of the outer mold and the tank provided with the heating and control path. 4. Method according to claim 1, which characterizes whether a liquid is an oil, namely ethylene glycol or silicone, 5. One of the preceding claims, characterized in that the circulation of the hot liquid was stopped and all the liquid was removed from the outer mold when the forming unit was reached through the pipe wall. . 6. The system for forming a branch in a pipe is made of polymer material, characterized by its presence: - a tool for making circular holes in the wall of the pipe, such holes are smaller than the size of the branch to be created. Considerably; - Forming unit with a cone-like front end to which the pipe will be directed, - A pulling device that will be connected to a cone-like forming unit for pulling it through a hole in the pipe wall, - A cylindrical mold with free ends. To where the external surface of the pipe must be Where air cannot enter and exit through the path of the forming unit connected to the pulling device, to define the circular portion of the concentrically protruding pipe wall around the hole, - the hot liquid dispenser and the hot liquid Hot flows from such a design for heating that part of the external surface of the pipe. 7. System according to claim 6, that characterizes that The cylindrical mold is equipped with a liquid dispenser and a liquid outlet connected to the liquid tank provided with a heating device with a suitable control path for maintaining a preset liquid temperature. 8. System according to Claim 7, which indicates the special characteristics that It contains A stationary frame is provided with a vertical frame column and a horizontal bar in which a design for a predetermined pipe size is attached to it, a pair of cylindrical piston fittings installed to the frame post and Connected to its axis to the horizontally standing movable frame 2, positioned above the horizontal bar of the stationary frame, one end of the pull rod is connected to the cone-like front end of the unit. A build that is inserted through one end into a pipe that is supplied with a branch. 9. System according to Clause 8, which specifies that special The free end of the cylinder is concave in shape to match the outer face of the tube that is aligned with the branch.