SU1292868A1 - Machine for two-sided bending of tubes - Google Patents

Abstract

The invention relates to pipe bending production. The invention makes it possible to increase the productivity of a machine by installing a removal mechanism and a clamping mechanism from one drive. The machine is equipped with a movable carriage 4 associated with the pneumatic cylinder rod 9, on which the angle levers 5 are hingedly fixed with roller templates 6. The clamping mechanism is made in the form of Two strips 19 and 13 and a spring-loaded plate 18. The centering mechanism is designed as T- shaped lever and adjustable t g with stops. From the loading device, the pipe blank is fed to the centering mechanism, then to the carriage, with which the clamping, bending and removal of the pipe is carried out. 7 il. (g J (L TA Y. 724. 2J 1 to о о 00 О5 СХ5 us.1

Description

one

The invention relates to a pipe and tube production and can be used in various industries.

The aim of the invention is to increase the productivity of the machine.

FIG. 1 shows the proposed machine, top view; in fig. 2 - the same, side view; in fig. 3 is a section A-A in FIG. one; in fig. 4 - the work clamping unit and the movable carriage with the pipe clamped at the end of the bend; in fig. 5 - pipe discharge at the beginning of the bend; FIG. 6 shows a discharge device and a cut-off device; Fig. 7 shows a kinematic diagram of the device.

The machine for two-sided bending of tubes includes a frame 1 on which a pneumatic cylinder 2 is fixed, on guides 3 of which the carriage mechanism 4 moves, on which angular levers 5 with bending templates in the form of rollers 6 are hinged. 7

The angular levers 5 are connected through the link 8 to the rod 9 of the pneumatic cylinder 2 and are adjusted by the nut 10. The adjusting and fixing of the levers 5 are made by bolts 11. The movable carriage 4 carries the mechanism 12 of the welded blanks, made from an U-shaped bar 13 with an adjustable stop 14 and through the nut 15 is supported on the rod of the pneumatic cylinder 2. The U-shaped bar 13 through the springs 16, adjustable by screws 17., rests on a spring-loaded plate 18 fixed to the rod of the pneumatic cylinder. The plate 19 is attached to the frame. The bending rollers 20 through the rail 21 and the crank mechanism 22 having a treadmill on the crank 23 are mounted around the templates 6. The drive 24 is mounted on the movable plate 25, which is moved by the screw 26.

Adjustable loading device 27 has cut-offs 28 operating from electromagnetics 29. The mechanism for centering workpieces 30 consists of a T-shaped lever 31 adjustable tons and 32 with stops 33 and operates from an electromagnet 34. The operation of electromagnets 29 and 34 and an electropneumatic valve 35, controlled by the pneumatic cylinder, is set by the treadmill of the crank 23 through the limit switch 36. The bent pipe is retracted by the tray 37.

1292868/2

The machine works as follows. From the treadmill of the crank 23, a limit switch 36 is commanded by electromagnets 29,

5 which include the cut-offs 28, and the workpiece from the loading device 27 is fed to the mechanism for centering the workpiece 30, the electromagnet 34 of which is switched on from the end switch 36. The electromagnet 34 rotates the T-shaped lever 31 which, via adjustable 32-t pulls, no movable stops 33 to the center machine tools that set the workpiece symmetrically with respect to the bending templates 6 At the same time, a command is sent from the end switch 36 to an electropneumatic valve 36, which supplies compressed air to the pneumatic cylinder 2, and the rod 9 of the pneumatic cylinder emeschaet carriage 4 in the direction of folding rollers 20. Moreover, the movable bending templates axis 6 coincides with tsenjc Trom movement of folding rollers 20, From the wings 8, 9 mounted on the rod of the pneumatic cylinder, diverge angular levers 5 May adjusted nut 10 and bolt 1I. There is a flow of

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the grid 4 through the nut 15 mounted on the rod of the pneumatic cylinder 2, and clamping the pipe. A symmetrically exposed billet pipe is clamped between the bar 19 attached to the frame and the U-shaped bar 13. The plate 18 attached to the rod of the pneumatic cylinder 2 abuts against the adjustable stop 14. The bending rollers 20 are at this time in the upper extreme position and begin through the rail 21: connected with the crank mechanism 22, run around the bending patterns 6. When the required bending geometry of the pipe (Fig. 4) is reached, the bending rollers 20 return to their original position.

At this time, from the treadmill of the crank 23, through the limit switch 36, a command is given to electromagnets 29, which return the cutters 28 to the initial position, the electromagnet 34, the centering mechanism of the workpiece 30 returns to the initial position, and electropneumatic valve 35, which switches the pneumatic cylinder 2, and the rod pneumatic cylinder 9 retracts the clamping mechanism to its original position. During the course of the rod 9 to its original position (Fig. 5) occurs

the grid 4 through the nut 15 mounted on the rod of the pneumatic cylinder 2, and clamping the pipe. A symmetrically exposed billet pipe is clamped between the bar 19 attached to the frame and the U-shaped bar 13. The plate 18 attached to the rod of the pneumatic cylinder 2 abuts against the adjustable stop 14. The bending rollers 20 are at this time in the upper extreme position and begin through the rail 21: connected with the crank mechanism 22, run around the bending patterns 6. When the required bending geometry of the pipe (Fig. 4) is reached, the bending rollers 20 return to their original position.

At this time, from the treadmill of the crank 23, through the limit switch 36, a command is given to electromagnets 29, which return the cutters 28 to the initial position, the electromagnet 34, the centering mechanism of the workpiece 30 returns to the initial position, and electropneumatic valve 35, which switches the pneumatic cylinder 2, and the rod pneumatic cylinder 9 retracts the clamping mechanism to its original position. During the course of the rod 9 to its original position (Fig. 5) occurs

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turning the corner levers 5 away from the backstage 8. The carriage 4 does not move by the spring 7, until the gap between the movable carriage 4 and the nut 15 is selected, the templates 6 approach each other. The bent pipe is released and falls onto the discharge chute 37. When the bending rollers 20 rotate to the upper end position from the treadmill 23, the electromagnets 29 and 34 and the electropneumatic valve 35 are commanded through the limit switch 36 again and the cycle repeats. The final position of the bending rollers 20 is adjusted by a screw 26 moving the movable plate 25 of the actuator 24.

Formula

the invention

Claims (2)

1. A machine for two-sided bending of pipes, including two bending assemblies with templates installed on a frame, a workpiece clamping mechanism with a drive in the form of a power cylinder, and a centering mechanism including a pair of stops installed opposite one another with the possibility of reciprocal reciprocating O 92868. 4 displacement, and a drive with an electromagnet, characterized in that, in order to increase productivity, it is equipped with a carriage mounted by means of guides on the body of the ram with the ability to interact with its rod and a pair of angular levers hinged on the carriage and one end associated with the cylinder of the power cylinder, each template is fixed on the free ends of the angle levers, and the clamping mechanism is implemented in the form of a bar and U-shaped bar fixed to the frame with an adjustable stop, in a groove Ora posted spring loaded plate fixed on the rod. 2. A machine tool according to claim. D, characterized in that the centering mechanism is made in the form of a T-shaped lever mounted to be rotated from the electromagnet and a pair of adjustable tg, each of which is connected to one of the opposite ends of the T-shaped lever at one end. , and others - with the appropriate emphasis. 0 five 2S fig 2 thirty 32 33 j J / 7 / Of 33 21 6  i3 8 16 18 17 I / / dL / -l - JFi. 15 Thebes. S 27 6 55 nineteen J  7 Compiled by I. Kovrigina Editor T, Parfenova Tehred V. Kadar Proofreader A. Zimokos 315/10 Tirak 733Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab, d. 4/5 Production and printing company, Uzhgorod, st. Project, 4