SU1625548A1 - Machine for rolling annular grooves on corrugated tubular workpieces - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular "equipment for rollers of transverse grooves before forming bellows. The purpose of the invention is to reduce the size of the machine for rolling the ring grooves. The machine contains a frame, a drum holder (BD) and a tool block. DB is made with protrusions. The projections are evenly spaced around the circumference. Mandrels forming an equilateral triangle are attached to the projections. The center of the triangle is located in the center of the database. The blank is put on one of the arbors. Tool block rolls grooves. DB turns. Ready tube slips off the mandrel. A new blank is put on the next mandrel. 2 Il.

Description

The invention relates to the processing of metals by pressure, in particular to equipment for rolling up transverse annular grooves before forming bellows.

The purpose of the invention is to reduce the size of the machine for rolling the annular grooves on the bellows tubes.

Figures 1 and 2 show a machine with a removable tool unit.

The machine for rolling annular grooves on bellows tubes-blanks contains a frame 1, a drum holder 2 with three identical mandrels 3 and a tool block 4 with rollers 5. The tool block 4 is connected to a DC motor 6 by means of a reducer 7. Drum holder 2 made with protrusions 8, placed evenly around the circumference. The mandrel 3 is fixed on the ledges with the formation of an equilateral triangle. The center of the triangle is located in the center of the drum holder 2.

The drum holder is installed with the possibility of periodic rotation and is connected to the gearbox 7 through the mechanism 9. On the frame there is a mechanism 10 for loading the billet tube 11 and the unloading tray 12.

The tool unit 4 is moved into the knurling area and back by the pneumatic cylinder 13. The loading mechanism 10 consists of a hopper 14 and a disk drum 15 mounted on the shaft 16. The shaft 16 is connected by a chain gear 17 to the shaft 18 passing inside the holder drum, connected chain drive 19c gear 7 and an electric motor 6.

A drive 20 for rotating the mandrels 3, including an asynchronous motor 21, is associated with a pneumatic cylinder 22.

The machine works as follows. The blank tube 11 i.z of the hopper 14 rolls down the tray and into the groove of the rotating disk drum 15 of the loading mechanism 10 at the time of alignment of the groove and the plane of the tray.

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The drum 15 makes one revolution during the operating cycle period, during which time the drum groove is installed against the corresponding mandrel 3 parallel to its axis located in the loading position. At this moment, the blank 11 slides under the action of its own weight on the mandrel 3. The mechanism 9 rotates the drum holder 2 at an angle of 120 °, and the mandrel with the blank tube takes up a working position. At this time, the pneumatic cylinder 22 moves the collet clamp of the actuator 20 of rotation of the mandrels 3 along the axis of the mandrel, envelopes its free end, fixes it rigidly and informs the rotation of the mandrel and tubing. The pneumatic cylinder 13 moves the tool unit 4 with the knurling rollers 5 to the knurling zone, where sequential knurling of the annular grooves on the tube-blank from its middle to the ends along the entire length is performed.

After rolling the annular grooves, the pneumatic cylinder 22, acting on the actuator 20, moves the collet chuck and releases the mandrel, and the pneumatic cylinder 13 removes the tool unit 4 from the knurling zone. The mechanism 9 rotates the drum holder 2 at an angle of 120 °. The mandrel with the blank tube takes the unloading position, while the tube under the action of its own

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the weight moves along the mandrel and the unloading web 12 enters the container.

The operations of feeding the tube onto the mandrel, rolling up the grooves and removing the tube from the mandrel occur simultaneously on all mandrels 3, which periodically occupy the loading, knurling and unloading position, thereby ensuring a continuous automatic cycle of the machine.

Claims (1)

Invention Formula Ring Grooving Machine on bellows tubes, blanks, containing an instrumental block mounted on a frame with rollers and a drum holder with three identical mandrels mounted with a cantilever arm mounted on it with a periodic rotation, as well as a loading mechanism with a piece dispensing device and an unloading tray of products in order to reduce dimensions of the machine, the drum holder is made with protrusions placed evenly around the circumference, the mandrel mounted on the protrusions with the formation of an equilateral triangle, the center of which is aligned with the center of the drum holder. 420 21 FIG. / 16 18 15 ft / / / / 7/13 c 5 9 19 7 6