SU662196A1 - Tube-bending machine - Google Patents

Description

(54) PIPE BENDING MACHINE in position (pipes issued to the lifting platform); FIG. 9 - Henna knot of FIG. one; in fig. 10 - the position of the node J. when lifting bending heads. Pipe bending 1: the tank contains a bed 1, in the supports 2 of which the shaft 3 is mounted, driven by the drive 4, carrying in its middle part a pipe fixing mechanism 5; consisting of a housing 6, in which removable lodgments 7 are installed, pivoting levers 8 with clamps 9 mounted on them, driven from cylinders 10. Symmetrically to the fixing mechanism 5 on the shaft 3, the cross members 11 are mounted, carrying profile interchangeable bending templates 12 located on the axes 13. In the upper part of the platform, in the guides 14, sliders 15 are mounted, in the guides 16 of which the carriages 17 are movably mounted, which are moved by hydraulic cylinders 18 fixed on the sliders. Each carriage 17 includes a bracket 19 in which a bending head 21 is fastened to an axis 20, consisting of a housing 22 carrying a bending roller 23, a calibrating roller 24 and a gear sector 25, which interacts with a rail 26, which is fixed in guides 27 and driven from hydraulic cylinders 28 rigidly fixed on the carriage 17. The coaxiality of the bending head 21 and the bending masks 12 is provided by spring-loaded clamps 29 mounted in housings 30 fixed on the bracket 19 and interacting by means of spring-loaded balls 31 with a micro-blade - chats 32 installed in housings 33 fixed on traverse 11. The tube feeding mechanism 34 consists of a spring-loaded cargo platform 35 rigidly connected with a cutter 36, a lifting platform 37 driven by a cylinder 38, on which a spring-loaded plate 39 interacting with, by means of, a pull 40 with a spring-loaded dog 41, locking the floating stop 42 with a spring-loaded spring 43, kinematically connected through the carrier 44 with a flag 45 strengthened hingedly on the axis 46. The pullers 47 are fixed on the side of the frame is located the storage hopper 48, skly 49 and skly 50. The proposed tube bending machine works as follows. The tube blanks are loaded into the bunker 48 and roll down along the slide 49 until it comes into contact with the load platform 35 (at the initial moment under the action of the load spring; I, the raised platform 36 does not prevent the pipes from moving along the slide 49), and the axle is lowered under the weight of the pipe, the cutter 36 locks the nose 49. The pipe rolls down onto the nose 50, and the pad 35 rises under the action of the spring and opens the tail 49 to feed the next pipe. Before loading the pipes on the lifting platform 37, the floating stop 42 under the action of the spring 49 is in the extreme left position (Fig. 6), and the kinematically associated flag 45 is retracted to the side, freeing the rail 50 to move the pipes. As the pipes move to the lifting platform 37, the floating stop 42 moves to the right (Fig. 7) and through the carrier 44 raises the flag 45, which cuts off a predetermined number of pipes (Fig. 8), while the floating stop in the rightmost position is locked with the pawl 41. 38, the platform 37 rises up to the stop of the pipes into the cradles 7 and the bending templates 12, while the plate 39 is pressed by the spring and slides through the thrust 40. By turning on the lower cylinder 10 of the fixing mechanism 5, the levers 8 are rotated and the clamps 9 are gripped. cylinder 38 klyuchaets to reverse and pad 37 is returned to its original position. At the same time, the spring-loaded plate 39, interacting with the thrust 40, raises the pawl 41 and releases the floating stop 42, which under the action of the spring 43 returns to the leftmost position (FIG. B) and lowers the flag 45 through the carrier 44, opening the slide 50 for another load pipes. When the actuator 4 is turned on, the shaft 3 rotates 180 ° coBiwecTHO with the crossbars 11 fixed on it with bending patterns 12 and the fixing mechanism 5 of the pipes with the pipes fixed in them. Flexible tubing is carried out as follows. By switching off the hydraulic cylinders 18, the carriage 17 is lowered until the bending heads 21 interact with the pipes, while the spring-loaded clips 29 slide in the slots of the housings 33 and by means of the spring-loaded balls 31 act on the microswitches 32, ensuring the coaxiality of the bending heads 21 and the templates 12 (microswitches 3 command to turn off the hydraulic cylinders 18). By activating the cylinders 28, the rails 26 move in the guides 27 and rotate the gear sectors 25, with which the bending heads 21, rigidly fixed to them, turn. In this case, the bending rollers 23 and the calibrating rollers 24 roll around relative to the patterns 12 and bend the pipes at a predetermined angle. By turning the hydraulic cylinder 28 on the reverse stroke, the bending heads 21 return to their original position, then the hydraulic cylinders 18 are turned on, and the carriages 17 are raised, while the latches 29 are pushed and slid in the slots of the housings 33 by means of the balls 31.

At the same time as the upper (currently) cylinder 10 is turned on, the curved pipes are uncoupled, the actuator 4 is turned on, and the shaft 3 is rotated 180 °. The bent tubes are dropped into the container by means of pullers 47 (in an intermediate position), the next batch of tubes enters the bending and the load continues.

The bending of pipes with different distances between the bends is provided by the corresponding movement of the sliders 15 together with the carriages 17 in the guides 14 and the cross members 11 along the shaft 3.

Different bends radii on the tubes are provided by replacing the patterns 12 and the bending heads 21.

The presence of rotary cross members from the block of bending patterns and the fixing mechanism of the pipes mounted on one shaft ensures the continuity of the machine operation cycle, i.e., its productivity increases.

Equipping the machine with a loading device containing an automatic load platform with a cut-off device and a floating stop, kinematically connected with a locking flag and locking mechanism, allows metered, continuous flow of pipes, cyclically coordinated with the operation of the bending mechanism.

These advantages increase the efficiency of the machine and make it fully automated.

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The expected economic effect from the use in industry of the proposed pipe bending machine is more than 60 thousand rubles. in year.

Claims (2)

1. The pipe bending machine containing the frame with the bending located on it a unit including bending heads and templates and a hopper type loading and unloading device, characterized in that, in order to ensure a continuous cycle of operation, the bending unit is additionally equipped with units of bending templates and a mechanism for fixing workpieces in the form of forked arms carrying detachable clamps and cradle This additional bending patterns are mounted on the shaft with the possibility of rotation relative to the bending heads. 2. The machine according to claim 1, characterized in that the loading device is in the form of a loading platform and is provided with a cutter and a floating stop, kinematically connected with the fixation mechanism. Sources of information taken into account in the examination 1. The patent of France No. 1496740, cl. In 21 D 1967 .. 2. Copyright certificate № 186260, cl. B 21 D 9/08, 1966.. R .eleven / one -h tH : bk - / - " rt gz go nineteen 8-B Phage. if 25I r-r .3 Faye.5