SU742009A1 - Automatic machine for mandrelless winding of helical springs - Google Patents

Description

The invention relates to the manufacture of bent-end springs, widely used in all industries of the industry. The known automaton for winding coil springs in a non-adjusting manner contains a drive roller mechanism for periodically feeding the wire mounted on the frame and kinematically interconnected among themselves, a winding mechanism, complete in the form of forming fingers and a trimmer, as well as a mechanism of spring segments ij. However, this machine does not allow springs with bent and curved ends to be obtained. The aim of the invention is to expand the technological capabilities of the machine. This is achieved by the fact that the proposed automatic spring winding machine is equipped with a winding finger, installed with the possibility of reciprocal movement through a lever mechanism having an L-shaped groove with a depth of no more than half of the wire diameter, a through hole with a diameter of 1-1, 5 of the wire diameter and the shaping protrusion for receiving the unbent end of the spring, the cut-off mechanism is completed in the form of a guide bar with a movable section mounted for movement perpendicularly the direction of the wire and coiling finger. FIG. 1 shows the kinematic scheme of the automaton; in fig. 2 - wire feeder; in fig. 376 — spring forming mechanism; in fig. 7 - types of springs. The machine contains a frame 1, an electric motor 2, which through a coupling 3, a gearbox 4, a gear pair 5 and 6 transmits rotation to a camshaft 7, on which a cam roller 8 is fitted, which provides wire feed, a cam 9, which creates a reciprocating movement through lever 10 A slider 11 on which the winding pin 12 of the cup 13 is attached is connected via lever 14c with a lower section (cutter) 15 and cam 16 connected through lever 17 and rail 18 with finger 19, the pressure roller 20 provides the wire feed, and the guide strip 21 - sent of wire. The machine works as follows. From the electric motor 2, through the clutch 3, the gearbox and the gear pair 5 and 6 receive a camshaft 7, which. transmits the movement mechanisms and nodes ai tomato. The wire is fed to a certain size to the zone of spring formation by rollers 8 and 20 and depends on the concentric protruding surface of roller 8, made in the form of two cams. In the interval between the wire feeds, the spring te) i and its segment are formed. The first wire is fed into the spring formation zone through the guiding bar 21 by the rollers 8 and 2O for the amount of the bendable ends of the desired spring, while the horses of the wire passes through the through hole with a diameter of 1-1.5 of the wire diameter and not L more than half the diameter of the wire. Cam 16 through lever 17 and rail 18zo

rotates finger 9, which forms the end of the wire on the ledge of the coiling rod 12. The winding finger 12, through the lever 10 from the cam 9, performs a movement perpendicular to the direction of the wire, bend the end and ensure that the radius is installed and can be moved perpendicularly the direction of the wire and twisted finger.

Sources of information taken into account during the examination 1. USSR Author's Certificate No. 384278, cl. B 21 F 35 / O2, 197O. the required spring, relative to the fixed mandrel 22. When the wire is subsequently fed by the rollers 8 and 2O, the spring is wound, after which the spring is cut off connected to the cam 13 via the lever 14 by a movable section 15 mounted into the guide bar 21. The shape of the invention An automatic winding machine for coil springs containing a periodic wire feeding mechanism mounted on a frame and kinematically interconnected, a winding mechanism and a spring section mechanism that is different In order to expand technological capabilities, it is equipped with a coiling finger installed with the possibility of reciprocating movement by means of a lever mechanism and having an L-shaped groove with a depth of no more than half the diameter of the wire, a through hole with a diameter of 1-1.5 diameters of the wire and a forming protrusion to obtain a bent end springs, and the cut-off mechanism is designed as a guide bar with a movable section.

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Claims (1)

Claim Automatic machine for helical winding of coil springs, comprising mounted on the bed 15 and kinematically connected to each other a periodic wire feed mechanism, a winding mechanism and a spring cut mechanism, characterized in that, in order to expand technological capabilities, it is equipped with a winding finger installed with the possibility reciprocating movement by means of a lever mechanism and having a L-shaped groove of a depth of not more than half the diameter of the wire, a through hole with a diameter of 1-1.5 diameter wire and forming protrusion to obtain a bent end of the spring, a meter of wire. The cam 16 turns the finger 9 through the lever 17 and the 18Z rail, which provides the shaping of the end of the wire on the ledge of the winding club 12. The winding finger 12 through the lever 10 from the cam 9 carries out a movement perpendicular to the direction of the wire, bending the core and providing a radius formation certificate of the USSR B 21 F 35/02, 1970. and the cut-off mechanism is made in the form of a guide bar with a movable section mounted with the possibility of movement perpendicular to the direction of the wire and the winding finger.