US 4,286,450 AGranted

Apparatus for manufacturing corrugated tubes

OwnerEduard M. Godin, Vladimir A. Anoshko +8inventors

InventorsEduard M. Godin, Vladimir A. Anoshko, Anatoly N. Gavrilov, Almas F. Akhmerov, Garik E. Zverkov, Valentin P. Semenov, Vladimir V. Grachev, Valentin M. Chepurin, Viktor Y. Mikhailov, Sergei I. Rybnikov

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Abstract

An apparatus for manufacturing corrugated tubes comprises a unit with a hydraulic drive for clamping and sealing the tubular billet, and a device for axial compression of said tubular billet communicating with a compressed gas source. The apparatus also comprises tools installed symmetrically with relation to the direction of compression with a provision for reciprocating across said direction for at least partial encompassing of the tubular billet. The apparatus comprises a device with a pressure regulator for delivering pressurized liquid from a liquid source into the space of the tubular billet for forming the corrugated tube. The apparatus further comprises a device for programmed pressure control inside the tubular billet whose inlet is connected to the hydraulic drive of the clamping and sealing unit and its outlet, to the inside space of the tubular billet, and a device for programmed control of axial compression force whose inlet is connected to the compressed gas source and the outlet, to the axial compression device for displacing the movable member thereof, both of said devices being in operational communication with each other for synchronous changes of axial compression force and pressure inside the tubular billet.

Claims7

Dependent claims

An apparatus for manufacturing corrugated tubes from a tubular billet comprising:

a bed;
a unit for clamping and sealing a tubular billet installed on said bed;
a hydraulic drive of said clamping and sealing unit installed on said bed;
a liquid source of said hydraulic drive;
a compressed gas source;
a device for axial compression of the tubular billet communicating with said compressed gas source and installed on said bed;
a source of forming liquid;
a device for delivering pressurized liquid from said liquid source into the tubular billet for forming the corrugated tube installed on said bed;
a pressure regulator of said forming liquid delivery device;
tools installed on said bed symmetrically with relation to the direction of compression of the tubular billet with a provision for reciprocating across said direction of compression for at least partial encompassing of the tubular billet;
a drive for reciprocating said tools;
a device for programmed pressure control inside the tubular billet, connected by its input to said hydraulic drive and by the output, to the space of the tubular billet;
a device for programmed control of axial compression force connected by its input to said compressed gas source and by the output, to said axial compression device for displacing the movable member thereof;
said device for programmed pressure control inside the tubular billet and said device programmed control of axial compression force interconnected operationally for synchronous changes of the axial compression force and of pressure inside the tubular billet.

11 more elements

An apparatus for manufacturing corrugated tubes from a tubular billet comprising a bed;

a unit for clamping and sealing a tubular billet, installed on said bed;
a hydraulic drive of said clamping and sealing unit installed on said bed;
a liquid source of said hydraulic drive;
a compressed gas source;
a device for axial compression of the tubular billet, communicating with said compressed gas source and mounted on said bed;
a source of forming liquid;
a current source;
a device for delivering the liquid under pressure from said liquid source into the tubular billet for forming the corrugated tube installed on said bed;
a pressure regulator of said device for delivering the forming liquid;
tools installed on said bed symmetrically relative to the direction of compression of the tubular billet with a provision for reciprocating across said direction for at least partial encompassing of the tubular billet;
a drive for reciprocating said tools;
a device for programmed pressure control inside the tubular billet, connected by its input to said hydraulic drive and by the output, to the space of the tubular billet;
a device for programmed control of axial compression force connected by its input to said compression gas source and by the output, to said axial compression device for displacing the movable member thereof;
said device for programmed pressure control inside the tubular billet and said device for programmed control of the axial compression force, operationally interconnected for synchronous changes of the axial compression force and pressure inside the tubular billet;
said device for programmed pressure control inside the tubular billet, constituted by said pressure regulator which is provided with electromagnetic control, has an inlet space communicating through the hydraulic equipment with said hydraulic drive, an outlet space communicating with the space of the tubular billet, and an electrical control circuit for controlling said regulator and a feedback circuit actuated by pressure inside the tubular billet.

12 more elements

Dependencies are inferred from the claim text.