SU733816A1 - Apparatus for winding springs with shaped eyelets - Google Patents

Description

The invention relates to a device for the manufacture of springs with shaped ends in the production of linen clothespins. A device for winding springs and flexible ears, containing mounted on the frame and having a common drive mechanisms for wire feed, winding springs, forming the ends of the springs. The forming mechanism is made in the form of two pairs of clamps that are movable in the opposite direction, one of which is mounted in a frame rigidly fixed to the frame and perpendicular to the axis of the wire, and the other parallel to it, and two symmetrically located relative to the axis of the shaped bending levers x lying in mutually perpendicular planes and inclined at different angles to the feed axis 1. However, this device does not provide the possibility of adjusting the spring angle when the bends are bending. It is also known a device for inserting springs containing a flexible bearer, which is made in. a view of the axially movable armature with an ooco made at its end, corresponding to the spring angle, and also installed on both sides of the punches moving towards each other along rails mounted on the frame at a given adjustable angle relative to each other 2. A disadvantage of this device is the narrow range of adjustment of the bending angle of the lugs. The aim of the invention is to expand the range of adjustment of the angle of bending of the lugs. The goal is achieved by the fact that in the proposed device, the sponge mechanism of the lugs contains a base plate and two bending shafts placed on it for rotation in opposite directions by means of a rack and pinion transmission, having two sectoral protrusions at the ends to grip the end of the spring, and the base plate has a shaped groove through which grooves with elbows move. FIG. 1 shows the kinematic diagram of the device; Fig.2 mechanism are flexible ears and view along arrow A.

The electric motor 1 is connected via a V-belt transmission with a drive shaft-gear 2, which is in permanent gear with the intermediate gear 3 / mounted on the camshaft 4, on which the cam 5 of the drive mechanism 6 is rigidly fixed, combined with the mechanism 17 cutting, and coupled with the shaft 8 of the winding mechanism. The coupling half 9 is rigidly connected by a pin 10 with a tension 11, which is located inside the hollow shaft 8 and is spring-loaded by a spring 12 on one side, and on the other is rigidly fastened with a rod 13c by a pusher

14, abutting against the sector 15 of the gear 3. Navivato head

16 is engaged with the coupling half, through the central opening of which a mandrel 17 passes, mounted inside the shaft cavity and spring-loaded 18 by the spring to the end of the rod. At the end of the mandrel 17, a guide rod 19 is rigidly fixed, which freely passes into the bending mechanism. The latter (figure 2) consists of a block 20f on which the case 21 of the bending shaft 22 is fastened, having bending points at the end (FIG. 3). The bending shaft has a pin 23, which is located in the groove of the housing, and is connected to the gear shaft 24, which has a constant gear with the slats.

25, which are connected by a rocker

26. Sleeve. 27 through pin 28 is connected with the cracker 29.

The device works as follows.

The wire through the feed mechanism b enters the coiling head 16, after which it begins to rotate. The head is switched on by means of the coupling half 9, which is driven through the pull 11, the bar 13 and the pusher 14 of the pie cam

15. The cross feed and cutting is carried out by the cutting mechanism 7. The cut spring is pushed over the rod 19 into the working area of the bender. From the winding mechanism

through the system of levers, the movement is transmitted to the beam 26, which transmits it to the rails 25. The latter, moving progressively in opposite directions, are rotated

gear shafts 24, and they rotate bending shafts 22 along a spitz-like joint, which, moving forward, rotate thanks to the guide pin 23 and the curved groove in the housing.

These croutons clamp and fix the spring which arrived on the power supply from the winding machine into the working area. At the same time, the bending shaft by the protrusions on the front end engages the end of the spring and the forward movement of the head is stopped due to the fact that the groove on the body in this place is located perpendicular to the axis of the shaft. Rotating further, the shafts 22 bend the ends of the spring in opposite directions at a given angle. During the return stroke of the rail, the spring is released and removed by the dumping device.

The proposed device has a simple design, convenient and reliable in operation.

Claims (2)

1. A device for winding springs with shaped lugs, comprising a wire straightening and feeding mechanism, spring winding and cutting mechanisms, and an eye bending mechanism, which is designed so that, in order to expand the range of angle adjustment, the mechanism the flexible lugs comprise a support plate and placed on it rotatably in opposite directions by means of a gear-rack gear two bending shafts having two sector protrusions on the ends to grip the end of the spring. 2. The device according to claim 1, about t l and -. This is due to the fact that the bending shafts are provided with pins, and the support plate has a shaped groove along which the shafts with pins move. Sources of information taken into account in the examination 1. USSR author's certificate number 393009, cl. B 21 F 3/027, 1971, 2. USSR author's certificate number 314585, cl. 21 F 35/02, 1968.