SU931264A1 - Apparatus for producing eight figure shaped articles from wire - Google Patents

Description

C5 ") DEVICE FOR MANUFACTURING. PRODUCTS OF THE TYPE OF EIGHT OF WIRE

one

The invention relates to the processing of metals by pressure, in particular to devices for the manufacture of wire products having the shape of a figure eight, and can be used in enterprises where parts, for example, for assembly work, are also manufactured on a mass scale.

A device for bending rings at the ends of a wire or wire is known, comprising kinematically connected clamping jaws mounted on a frame and a TIJ loop forming mechanism.

A machine for manufacturing wire products with a loop is known, comprising kinematically connected clamping jaws mounted on a frame, a loop forming mechanism and a cutting mechanism for the rear end of the wire f2J.

However, these devices can not make products of wire type eight.

It is also known a device for the manufacture of articles of the type eight of wire, containing support pins mounted on a common base and bending elements in the form of rollers mounted on removable levers whose axes of rotation coincide

10 with axles of bearing pins. The bending is done manually, applying force to the levers and thereby turning the bending elements around the bearing pins f3115

A disadvantage of the known device is low productivity.

The purpose of the invention is to increase productivity.

This goal is achieved by

20 that an apparatus for the manufacture of articles of type eight; oki containing two bending placed on the plate. Shtyr and two placed on parallel393

bending roller axles, has a cutting mechanism, and a plate with bending pins is mounted on an axis parallel to the bending roller axes and connected with them by means of a gear, while the bending rollers are made in the form of oval knuckles and rigidly fixed on their ax x

.In order to facilitate the removal of the product, bevels are made on the outer surface of the fists.

The cutting mechanism of the device consists of a finger slide, stationary and movable knives fixed on the slide and a spatial cam placed on the axis of the bending pins with a groove in which the finger is placed.

FIG. 1 shows the device, a general view; in fig. 2-7 - phases of manufacture of the product.

The device consists of a shaping mechanism 1, a wire feeding mechanism 2 and a mechanism 3 of pieces of the workpiece. The shaping mechanism 1 comprises three shafts 4-6, located in one plane and kinematically interconnected by three identical gears. The middle shaft 5 is connected at one end to a drive (not shown), on the other end of the shaft a flexible plate is fixed in the form of a base 10. pins, 11. In addition to Toroj, a fist 12 is fastened on this shaft, through the pin 13 connected with the knife of the mechanism 3 pieces of the workpiece. On the shafts t and 6 bending elements 15 and 16 are fixed, made in the form of steel fists, having bevels 17, made on their periphery along a spiral line.

The device has a stop 18 for measuring wire feed. The device operates as follows.

The wire feeder 2 feeds the wire 19, which, having passed between the support pins 11 parallel to the base 10 of the bending fork, reaches the stop 18. At the same time the bending fork, turning, begins to bend the wire 19. Sitting on one shaft 5 with the bending fork fist 12 through the finger 13 actuates the mechanism 3 pieces of the workpiece, the knife 1 which cuts the workpiece. The workpiece, being sandwiched between pins 11 and fists 15 and 16,

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which are driven by gears 7 and 9 through gear 8, sitting respectively on shafts 5 and 6, enveloping the surface of the pins, takes on a figure-eight configuration.

FIG. 2-7, the bending phases of the wire 19 are shown when the bending fork is rotated through an angle from 0 to 30 °. When the bending fork from the initial position is rotated through an angle of 270 (Fig. 6), the formation of the loop is completed and upon further rotation the loop falls on the bevels 17, which move it to the edge of the pins. Simultaneously new

the workpiece passes through the bending fork until it stops 18 (Fig. 7). The cycle is repeated.

The device also makes it possible to obtain asymmetric products with different radii, which is ensured by the selection of the shape of the pins. The advantages of the proposed device to the known ones are to increase labor productivity by

mechanization and automation and ensuring high reliability of the device.

Claims (3)

1. A device for the manufacture of eight-wire products containing two bending pins placed on a plate and two bending rollers placed on parallel axes, characterized in that it has a cutting mechanism to increase productivity, and a plate with bending pins is installed on the axis located parallel to the axis of the bending rollers, and connected with them by means of a gear, while the bending rollers are made in the form of oval fists and rigidly fixed on their axes. 2. The device according to claim 1, about tl and which is so that, in order to facilitate the removal of the product, the bevels are made on the outer surface of the fists. 3. The device according to Claim 1, which is based on the fact that the cutting mechanism consists of a slider with a finger, fixed and fixed on the slider movable knives and placed on the axis of the bending pins of the spatial cam with a groove in which the finger is placed.