SU32472A1 - Zigzag spring machine - Google Patents

Description

It is known to bend metal springs of springs and the like by means of a drum with protruding mandrels, by passing, in order to obtain the desired outline, between fixed stops. In the proposed machine with such a drum, in addition to the stationary roller stops that serve to bend the tape in one direction, there are still periodically moved thrust rollers for bending it in another direction.

The drawing shows only the working parts of the proposed machine, FIG. 1 with a side view and in FIG. 2 - in the top view.

The drum / carrying the plug-in mandrels can be rotated about the axis indicated in FIG. 1 by a point 16, by a handle 12 by means of bevel gears 11, 11, and a worm gear 8-9. In the slot 7, around the circumference of the drum, they are inserted with their shanks of the mandrel 5. The tape 10, from which the spring is bent, is fixed at one end to the drum with the first mandrel 5 and the strap 4, which is clamped by means of screws, 2, passed through the support 3. the thickness of the tape, the distance from the mandrel ribs protruding from the drum, on the side of them, are mounted on the machine against each other fixed stop rollers 18, which serve to bend the tape, and

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the two rollers 6 are placed on one another against the other supports 13, which are moved along the guides 14 back and forth along the mandrels 5 by the handle 17 by means of a rack and pinion gear 15.

The operation of the machine is as follows. The first closest to the bar 4 is inserted into the drum, the mandrel 5 and between it and the bar is clamped by one of the ends of the heated blank tape 10. At the beginning of the process, the drum is in such a position that the part of the tape released from the clamp is on the right of the rollers 18, so that when the drum rotates from right to left in the drawing, it encounters one of the stationary thrust rollers 18 on its way and, under its influence, bends to the right around the edge of the mandrel transverse to the axis of the drum. Then the caliper 13 (lower in Fig. 1, if the tape is released in that direction) is set in motion, which is why its roller 6 rolls the tape, bending it along the axis of the drum, along the long side of the mandrel. After that, the second mandrel is inserted, so that the rolled portion of the ribbon becomes between the mandrels, and the continuation of the ribbon with further rotation of the drum meets the other opposite roller 18 and is subjected to a second bend to the right. Driven by the second caliper 13 (upper chertams.

the bottom moment is retracted to the moment) and with its roller 6 the tape is pressed and rolled along the length of the second mandrel, etc.

FIG. Figure 2 shows the three bends of the tape 10 made on three mandrels 5, but with the remaining dotted line shown at the end, the operations described above can be continued and then to the required number of spring bends.

The subject matter of the invention.

A machine for the manufacture of zigzag springs using a drum with protruding mandrels serving to flex the desired product by passing between 1 fixed stops, characterized in that for flexing the tape, near the insert mandrels 5 on the cylindrical surface of the rotary drum 7, along one of the drums are designed the other, the thrust rollers 6, located on the slide plates 13, periodically moving in one direction, and for bending in the transverse direction to the drum axis anovlennye fixedly on the way of passage 18 pressure rollers.