SU445498A1 - Wire feed mechanism for processing - Google Patents

Description

The invention relates to forging equipment and can be used in the manufacture of rolled blanks knitted needles having a bent end, with the aim of automating their supply for processing.

A wire feed mechanism for processing by a deforming tool is known, comprising two parallel transport screws placed on a bed and driven from a camshaft camshaft, a clamping unit of the workpieces at the time of their processing, including movable and fixed jaws.

However, the known mechanism does not provide feed blanks with pre-bent ends.

The proposed mechanism differs from the known one in that it is provided with rigidly mounted on a bed on both sides of the clamping jaws, parallel to the transporting screws, slats with bevels raising the bent end above the jaws level, and a movable slide fixed to the existing lever connected to the camshaft , and forming, together with the spring provided above it, a slit for directional movement from the clamping jaws to the deforming tool and back. This ensures the supply of blanks with pre-bent ends.

The drawing shows the kinematic scheme of the proposed mechanism.

The mechanism and equipment on which it is mounted contain a shaft of a press, from which, through a chain transmission 1, a tapered pinion 2 receives a rotation of the cam camshaft 3 and the crank 4.

From the crank 4 through the Maltese cross 5, gears 6-9 receive intermittent rotation of the transport screws 10.

From the feeder 11 from the cam 12 through the lever 13, the blanks 14 fall into the grooves of the transport screws.

To lift the ends of the blanks above the movable clamping jaw 15 there is a fixed ruler 16, made with a smooth bevel in the vertical plane for entry

on her blanks. The movable clamping jaw receives movement from the cam 17 and the lever 18.

To lower the blanks onto the working surface of the tool, there is a movable bar 19. It receives movement from the cam 20 and the chippers 21 and 22.

The workpiece is pressed against the movable plate by a constant plate spring 23 fastened over this bar.

For fixing and clamping the workpieces, there is a fixed sponge 24. The passage of the blanks over this sponge after processing is ensured by the presence of a fixed ruler 25, which at the end has a smooth bevel in a vertical plane.

The mechanism works as follows.

The billet 14 is lowered by piece, by means of a gate located on the lever 13, into the grooves of the transport screws 10, which move the billets in the area of their processing, from the cam 12. When approaching the shtampa, in front of the movable clamping sponge 15, on the path of the blanks there is a fixed ruler 16, located in the vertical plane below the blanks and having a smooth bevel to a level slightly exceeding the upper edge of the movable clamping jaw 15.

The ends of the blanks are raised along the bevel of the ruler 16, while being cut off from the bottom of the groove of the screw 10 nearest to the tool and by further transportation bypass the movable clamping jaw 15.

When the workpiece approaches the machining zone, it moves from the fixed ruler 16 to the movable bar 19, falls under the spring 23 and is in the gap between the movable bar 19 and the spring 23.

Then, as the movable bar 19 is lowered from the cam 20 through the levers 21 and 22, the end of the workpiece pressed by the spring 23 is lowered with it until it lies on the working surface of the tool with the entire plane.

From the cam 17 and the lever 18, the workpiece is pressed against the clamping tube 24 by means of the movable clamping jaw 15, after which processing is carried out.

After processing, the movable clamping jaw 15 moves away, freeing the workpiece, and the movable strip 19 from the cam 20 through the levers 21 and 22 raises the workpiece to a level slightly higher than the height of the clamping jaw 24, and the transport screws 10 lead the workpiece out of the machining zone. In this case, the end of the workpiece, resting on the second fixed ruler 25, passes over

the base sponge 24 and then descend along the bevel of the fixed ruler 25 to the reference plane.

During further transportation, the folded ends of the blanks come down from the support plane, the blanks are oriented with the folded ends down and are assembled in a package.

Subject invention

Wire Feeder

for processing with a deforming tool, containing a feeder placed on the frame and driven from a cam camshaft, two parallel transport screws, a workpiece clamping unit

at the time of their processing, including movable and stationary clamping jaws, characterized in that, in order to ensure the supply of blanks with pre-bent ends, it is provided with rigidly mounted on the frame on both sides of the clamping jaws, parallel to the transporting screws, bars with bevels, lifting the bent end above the level of the sponges, and the movable bar attached to

having a lever associated with the camshaft and forming, together with the spring provided above it, a slit for directional movement from the clamping jaws to the deforming tool and back. P / 3, 0