SU144216A1 - Device for semi-automatic production of U-shaped transformer packages - Google Patents

Description

Devices for the semi-automatic manufacture of U-shaped transformer packages made of tape transformer iron are known, which consist of a feed mechanism, a cutting knife and a system of control cams.

However, the known devices do not provide the operations of bending and assembling plates of different lengths by the method of pulling the bendable part through semi-matrix.

The proposed device does not have this drawback. This is achieved by the fact that the semi-matrices of the proposed device are made sliding.

The drawing shows the kinematic scheme of the device.

When the device is operated by an electric motor, rotation is transmitted through a gearbox to the flywheel /, with which two working shafts 2 and 3 are connected. Shaft 2 receives rotation from the flywheel through the coupling with the pivot pin and with the included coupling makes the same turns as the flywheel. Shaft 5 also receives rotation from the flywheel through a ratchet mechanism, which allows the shaft to rotate at a certain angle in one turn of the flywheel. For cutting and bending one plate, shaft 2 should turn one turn and shaft 3 some part of the turn. These shafts with the help of copiers and threads with different pitch control the movements of all mechanisms of the device. The belt is fed by the carriage 4 of the feed mechanism, which is driven by the spring 5 through the levers 6 to 7. The carriage 8 retracts the carriage 8. Moving the carriage forward is limited by a movable stop 9 mounted on the working shaft 3 by means of a screw pair. When the shaft 3 is turned at a certain angle, the stop moves in the direction indicated by the arrow, and the carriage increases the stroke by the required amount. When feeding, the tape is clamped between the carriage cover 10 and the needle 11 with

No. 144216-2 -

the copier 12 through the flap 13 and the spring 14. When the carriage retracts back, the copier 12 releases the needle // and, to prevent restraint, the tape is clamped by the needle 15 through the lever 16, the pusher 17, the strip 18 and the flap 13 by spring 19. The fed flax is cut 20, which receives movement from the copier 21 through the levers 22, 23, 24 and the pusher 25. To maintain the axis of symmetry of the plate (i.e., the constant bending line) after each cycle, the knife moves in the direction indicated by the arrow by 0.5 increments in length plates. The knife is retracted when the shaft 3 is turned by the housing nut 26. The bending of the plate is carried out by the punch 27 from the copier 28 between the semi-matrixes 29 and 30. The semi-matrixes are mounted on the shaft 3 on a tape thread - one on the right, the other on the left. When the shaft 3 is rotated by a certain angle, the half-matrix is moved apart, each by an amount equal to the thickness of the tape being forged. During the advance of the punch, the tape is clamped between the punch and the ejector, compressing the ejector spring 31. When the punch 27 departs, the ejector moves forward through the lever 32, pu 33 from the copier 34 so that it goes beyond the border of the semi-matrix 29 and 30 and holds the bent plate before pressing it with grippers 35 and 36, which operate from springs 37 to 38 and are retracted by copiers 39 and 40. After the grippers press down the bent first plate, the ejector 41 retreats to its original position slightly below the level of semi-matrix so that Oba not feed the next plate commoners. The levers of the ejector 41 work in the same way as the levers of the cutter knife 20. When the shaft 3 is rotated at a certain angle from the ratchet mechanism of the half-matrix 29 and 30, the housing nut, cheek 42 and the stop 9 each move apart in their direction. The tape is fed longer and the whole process starts over. The punch of one plate serves as a punch for the second, and so on. After the package is assembled from the required number of plates, the cheek 42 rests on the screw 43, the stop 44 comes out of engagement with the lever 45 and is fed forward by the spring 46. an anvil 44, the key is turned by turning off the clutch, and the shafts 2, 3 are stopped. The punch is stopped in such a position that the packaged bag remains clamped only between the punch 27 and the ejector 41. This allows the handle 48 to retract the ejector and release the package. The bag is easily removed by hand or magnet.

Before turning on the semiautomatic device, it is necessary to return the ejector 41 to its original position by turning the handle 48 counterclockwise. By turning the handwheel 49 clockwise, they return to their original position — the half-matrix 29, 30, the stop 9, the body nut 26 and the cheek 42. Turning the handle 50 to the right, the semiautomatic device turns on; turning the handle 51, the semiautomatic device is turned off.

The proposed device passed factory tests and showed reliability in operation. In addition, the proposed device provides high quality manufactured packages.

Subject invention

A device for semi-automatic production of U-shaped transformer packs of tape transformer iron, consisting of a feed mechanism, a cutting knife and a control cam system, characterized in that, in order to carry out the operations of bending and assembling plates of various lengths by pulling a bent part through a semi-matrix , the latter are sliding.