SU147569A1 - Automatic machine for the manufacture of damper and Schultern springs - Google Patents

Description

Automatic bending machines for manufacturing various kinds of lrovolok products are known, consisting of a wire feeder, straightening rollers, spring mandrels, dies, punches and cutting blades.

The described automaton for the manufacture of damper and schultern springs differs from the known ones in that it uses reversed-rotational motion at a given angle and drive gear with kinematically connected to the wire feeder with the ooo arm and knife fixed on it interacting with the knife of the matrix, and the drive gear, which is in constant engagement with the leading bristle and winding the coils of the spring on the sliding mandrel.

Such an embodiment of the design of the automaton allows to mechanize the production of damper and Schulter springs used in the manufacture of the piano.

The drawing shows the proposed machine for the manufacture of damper springs.

The machine consists of a plate 1, on which the stand with the coil 2 for the wire, the slide 3 of the caliper 4, the stand 5 of the pinion gear 6 and the bracket 7 of the driving eccentric 8 receiving movement through the gearbox from the electric motor are rigidly fixed.

A slide 4 moves back and forth along the slide 3, which is equipped with a roller device 9 for straightening the wire 10 and a mouthpiece 11. On the driving gear 6, a double shoulder punch lever 12 with a bran knife 13 is rigidly fixed.

At rack 5, the knowledge of gear 14 with a catcher of 15 and a drowning center 16 is strengthened.

The center retraction mechanism and guide plates for the rotating long end of the spring are not shown in the drawing.

No. 147569 2 In the groove of the post 5, the matrix 17 with a knife is strengthened, which extends only at the moment of cutting the spring with the knife 13. The power connection between the parts is made by levers 18 to 19, while the lever 18 pivotally connects the eccentric 8 with the lever 12, and the lever 19 - gear 14 with a caliper 4.

The machine works as follows.

Leading gear 6 rotates counterclockwise, raising the punch lever 12 to the position shown in dotted line drawing. The finger 20 of the lever 19 rests on the end of the circular groove 21 of the leading gear 6, and upon further movement, the lever 19 starts (to move the support 4, and with it the mouthpiece 11 to the extended center 16.

Lever-punch 12 occupies the uppermost position, with the mouthpiece 11 approaching center 16. At this moment, the mouthpiece is bent towards the center with a cam and the wire is caught by the gear 15, driven gear 14 and jerked towards the center 16. The lever-punch 12 moves clockwise, the finger of the lever 19 freely slides along the circular groove of the gear 6, the caliper 4 stands in place, driven by the gear 14 and the catcher 15 rotates, "the wire onto the stationary extended center 16. The length of the circular groove is approximately equal to the circumference of the driven 14. The finger of the lever 19 rests on the end of the circular groove, the caliper, 4, pushed by the lever 19, moves to the right and, when the punch lever takes the lowest position, the matrix 17 will protrude and the triangle 13 will cut off the wire.

The punch lever 12 moves from the lowest position to the middle one (see drawing). Finger lever 19 slides in the groove of the gear 6. The caliper is in place. The center and matrix are recessed. Ready spring 22 is reset. Then the cycle repeats.

For the manufacture of Schultern springs, an appropriate die and punch shape are used.

The management of the furniture and woodworking industry of the Leningrad Economic Council notes the usefulness of the proposal, which allows to mechanize the processes of manufacturing damper springs.

Subject invention

An automatic machine for the manufacture of damper and Schultern springs with a crank drive, equipped with a wire feed mechanism, rimming rollers, a spring coiler, a matrix, a punch and cutting blades, characterized in that, in order to simplify the construction of the machine, it is reducible in it. - rotational movement at a given angle and kinematically associated with a wire gear leading gear with a lever fixed on it with a punch and a knife, interacting with the knife of the matrix, and the gear permanently engaged with the drive gear and winding the spring coils onto the sliding mandrel.

NOT. p. 2, in lines 9 and 21 above instead of the word circular. PRINT round should be read

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