SU112717A1 - Device for pushing the end of the metal rod to the point of the drawing mill - Google Patents

Description

When calibrating hot rolled rod metal on chain drawing mills, prior to drawing, one end of the rod is sharpened so that the end of the rod can be freely passed through the drawing point and the end is released from the point to grip the rod with the jaws of the drawing carriage of the mill.

Such an operation is laborious, it requires a lot of sharp machines with a large staff of workers and, moreover, it gives a large waste of metal, because, apart from chips. the pointed end is also cut off after calibration.

The proposed device refills the end of the rod to the point of the drawing machine without sharpening, by pushing for the length necessary to grip the end of the rod by the dragging carriage.

This is achieved by using a carriage in the device, which, when pushed by a sponge clamped by the jaws, is moved by levers and drags from the eccentric shaft of the working chain of the drawing mill, and the carriage is turned on and off with the help of a foot pedal.

In the device for simultaneous pushing of two rods with a two-lead drawing, this is achieved by using a carriage with two pairs of clamping jaws and a continuous reciprocating movement in which the clamping of the rods for pushing is performed by the clamping lever of the jaws when the carriage is in the rearmost position.

FIG. 1 shows a schematic of a device for pushing the end of a rod metal into a point of a drawing mill; in fig. 2 is a schematic of a device for simultaneously pushing two rods in double-threading.

The movement of the pushing carriage 10 when pushing the rod into point 4 (Fig. 1) is from an eccentric shaft / with an asterisk 2 rotating from the working chain 17 of the drawing mill. Shaft / nos. 112717-2 -

There are two eccentrics located symmetrically with respect to the axis of drawing.

On the eccentric shaft / seated split heads 16, which are connected to the roller-pusher 13 with two rods 15 and the M-shafts 13. The rollerbolt 13 enters the groove of the levers 12, When idling, i.e. when the carriage with jaws is in place The roller-pusher 13 is at the bottom, in the horizontally oblong groove of the lever, and makes a reciprocating motion. With the help of a foot pedal, the roller holder 13 rises and is inserted into the vertical groove of the lever 12. The lever 12 and the carriage 10 also enter the reciprocating part.

Pushing the rod in the point is as follows. The bar is pre-passed through the carriage to the draw point 4. Then the bar is clamped with the jaws 6 of the carriage 10. The clamp is carried out by feeding the lever 9 of the jaws 6 forward. Two levers 8 are connected to the lever 9, at the ends of which there are fingers. The fingers push the holders of the 5 jaws 6 along inclined planes, which bring the holders of the jaws 6 to the center of the carriage 10, and the jaws clamp the metal. Rollers 7 are mounted along the inclined planes of the carriage to ensure a reliable clamping of the jaws with the jaws. the sponge 6 spontaneously discharges the vehicle and the carriage 10 moves back freely. To disconnect the carriage 10, i.e., to stop its movement, it is necessary to release the foot pedal 11. The roller-pusher 13 lowers under its own weight downwards and enters the horizontal oblong groove of the lever 12; the carriage 10 stops.

After pushing the end of the rod, the drawing carriage 3 passes to the drawing board and applies a sponge to the end of the rod. The hook of the dragging carriage is lowered and engages with a constantly moving chain 17. The carriage, coming into motion, clamps the metal with its jaws and drags it through point 4.

The device for pushing two shtangs simultaneously with double-threading has the same pushing principle as for the device with one rod (Fig. 2). The difference is that the carriage W has two pairs of jaws 6 with holders 5, which are separated by a guide plate 18. In addition, in the second scheme, the lower pedal is excluded.

Pushing the second scheme is as follows. The eccentric shaft 1 with an asterisk 2 rotates from the working value 17 of the drawing mill. From the eccentric shaft / movement through the gigs 15 and the levers 12 is transmitted to the carriage 10, which, when the drawing mill is in operation, performs a continuous reciprocating motion.

Preliminarily, two rods are passed through the carriage 10 to the dragging points 4. Then, as soon as the carriage 10 moves to the rearmost position, the jaws clamping lever 9 is turned, the sponges are clamped to the shanks and the rods are pushed into the point. During the return stroke of the sponge 6, the carriage spontaneously disperses and the carriage continues to perform free reciprocating motion.

Subject invention

Claims (2)

1. A device for pushing the end of the rod metal into a point of a wiper mill, characterized in that, in order to exclude in the manufacture of calibrated steel, the operations of the sharp end of the rods and the lengths of the sharp end are rejected after calibration, it uses a carriage whose movement when pushing the bar clamped with jaws is carried out by levers and drags from the eccentric shaft of the working chain of the drawing mill using the foot pedal. 2. Modifying the device according to claim 1, in order to simultaneously push two shthangs with double-threading, instead of the carriage with one pair of clamping jaws and controlling the foot pedal, a carriage with two pairs of clamping jaws and continuous reciprocating motion, in which the clamping of the thong for pushing is performed by the clamping lever of the jaws in The moment the carriage is in the extreme position. № 112717