SU184236A1 - DEVICE FOR MAKING WIRE DETAILS OR TAPES - Google Patents

Description

A device for the manufacture of wire or strip parts is known, comprising feed mechanisms and lengths and a bending assembly. The unit is flexible known device is made in the form of two pivoting levers, enveloping the workpiece around the mandrel.

A positive feature of the proposed device is that it provides the manufacture of ring-shaped parts with ends fastened by means of brackets, for example spring bracelets.

This is achieved by the fact that the device is provided with a mechanism for the formation of staples that fasten the ends of the bent ring, which interacts with the ring bending unit and contains the wire segment node and the U-bracket bending node, and the bending unit of the ends of the U-shaped brackets on the bent ring.

In addition, the device is equipped with a spring-loaded ejector for removal of finished parts.

The mechanism for the formation of staples contains two identical units of wire segments and flexible U-shaped staples. Each node is a punch fixed in a slider and interacting with a matrix made in the form of two levers, also associated with the slider and moving apart when it is lowered.

The bending unit of the condoms of the U-shaped brackets is made in the form of two nary levers, tied with horizontally movable spring-loaded pushers under the influence of a system of levers and a cam drive.

FIG. 1 shows a kinematic diagram of the device; in fig. 2 - node wire segments and flexible U-shaped bracket in the source

position in three projects; in fig. 3 is the same, in the process of forming the staple, front view; in fig. 4 - node are flexible ring blanks in the initial position; in fig. 5 - nodes cut and flexible U-shaped bracket and node

annular workpieces are flexible at the end of the working cycle, in two projections.

The proposed device includes a shaft i, the rotation of which informs the electric motor 2 through the V-belt transmission 5, the brake 4 and the clutch 5.

The inclusion of a device for the manufacture of parts such as spring bracelets is made by a pedal 6, which, through a system of pulls 7, 8, 9 swinging around the supports 10, and a finger

// includes clutch 5.

When the shaft / cam 12 rotates through the roller 13 and the brush 14, the dog -15 is actuated. Lastly, during the course of the stroke, the ratchet turns 16 by one tooth and

17. These rollers, interacting with the rollers 18, feed the wire 19, wound on two bays (not shown in the drawing) to the knot of sections and bending of the wire.

The wire cut and bend assembly contains two punches 20 attached to a composite slider comprising an upper part 21 and a lower part 22, interconnected by means of hooks 23 and pin 24.

The punches are driven by an eccentric 25, which sits on the shaft I, through a screw 26, which serves to regulate the stroke of the plug, and a plane 27.

When the slider is lowered, the cutting edges of the 28 punches 20, interacting with the cutting matrix 29, cut off a wire of a given length from the wire, and the plunger lowers it. Then, under the workpiece, the levers 30, which serve as a bending matrix, are brought in, and with further lowering of the punches 20, the ends of the workpieces are flexed and two U-shaped brackets are formed.

The ribbon blank 31, from which the spring bracelet ring is made, is placed on the table 32 and moved under the bending head 33.

Rotating on the shaft /, the cam 34 rotates the levers 43 around the axes 44 through the roller 35 and the levers 56/57, 38, 39, 40, 41 and 42, while the levers 4S bend around the ribbon around the bending head 55 and bend the workpiece to the frame. with overlapped bent ends.

Upon further rotation of the shaft / leverage, the matrices 30 move apart, the hooks 23 jump off the pin 2: 4, the upper part 2 / of the slide pushes the U-shaped brackets, the punches 2.0 and the flexible head 55 move together, and the punches put the U-shaped brackets onto the bent overlapped spring rings . Next, the levers 45 and 46 finally bend the ends of the U-shaped brackets.

The levers 45 and 46 rotate under the action of a horizontally movable pusher.

47, the stroke of which is limited by the limiter 4S. Said pusher receives movement from cam 49 sitting on shaft I through roller 50, rod 51 and rusk 52 returned to the initial position by means of springs 53, 54, 55.

The finished part is removed by the ejector 56, driven by the cam 57, through the roller 58, the rod 59 and the lever 60. The ejector returns to its original position by means of the spring 61.

Subject invention

Claims (3)

1. Device for the manufacture of parts wire or ribbon containing feed mechanisms and lengths and a bending unit, made in the form of two pivoting levers, enveloping the workpiece around the mandrel, characterized in that, in order to manufacture parts an annular form with ends fastened by means of brackets, for example spring bracelets, it is provided with a mechanism for forming brackets fastening the ends of the bent ring interacting with the bending unit ring and containing nodes wire segments and flexible U-shaped brackets, a bending unit of the ends of the U-shaped brackets on the bent ring and a spring-loaded ejector to remove the finished part. 2. The device according to claim 1, characterized in that the knot is cut and flexible. The U-shaped bracket is a punch fixed in a slider and interacting with a matrix made in the form of two levers, moving apart when lowering the slider, and serving for stapling on the ring blank. 3. The device according to PP. 1 and 2, different the fact that the node bend the ends of the U-shaped the brackets are made in the form of two pairs of levers that are turned horizontally by a movable spring-loaded pusher under the influence of a system of levers and a cam drive. nineteen fug 2 2J i9 45