SU916036A1 - Female die assembly to apparatus for hydraulic extruding of wire being bundled - Google Patents

Description

The invention relates to the processing of metals by pressure, in particular to devices that are used to press the wire from cove blanks.

Known matrix node to the device for hydropressing bay wire containing guide sleeve with a taper, a deforming matrix, a grip holder and a tapered holder with a sealing insert, placed between the deforming matrix and the guide sleeve coaxially with them [1I.

The disadvantage of this node is that the lead-in cone of the guide sleeve does not provide a smooth straightening of the wire billet in the sealing insert. This is especially true when hydropressing wire billet of increased rigidity and increased diameters (ά> 2 mm, <% »60 kgf / mm ²⁰ ). The sharp bends of the workpiece, while observing this, create the conditions for the formation of the wire - to the removal of the cladding metal. In addition, spontaneous straightening of hard wire requires an increased power mode of hydraulic pressing.

The purpose of the invention is to reduce the effort when Hydropressing wire from materials in a wider 5 range of mechanical properties and diameters.

This goal is achieved by the fact that the matrix node containing a guide sleeve with an electrically cone, ^ 0 deforming matrix, a matrix holder and a tapered holder with a sealing insert, placed between the deforming matrix and the guide sleeve coaxially with them, is provided with a support placed on the matrix holder. for the guide sleeve mounted on the conical surface of the bushing filar guide roller, as well as centering ro_ _n likami.Pri in the central part of the guide cone filar vtulit and a recess for installation of the centering rollers.

The guide roller can be installed at an angle corresponding to 25 average winding angle of the turns on the bay, those The drawing shows a matrix node, a section.

The matrix node to the device for wire extrusion contains 30 matrix holder 1 with a deforming

916036

the die 2, the guide sleeve 3 with the lead-in cone and the tapered sleeve 4 located between them with the sealing insert 5 "

The tapered yoke 4 with the sealing insert 5 forms with its outside 5 surface with the surface of the guide sleeve 3 facing towards it an annular cone-shaped cavity 6,

and by deforming matrix 2 has a central cavity 7. Both po- 10 Lost 6 and 7 are connected with the cavity of the container (not shown) radial channels 8 and 9 executed in _ί matritsederzhatepe 1.

Guide sleeve 3 is mounted 5 on the rotation support consisting of bearings 10 and 11 (radial and thrust, respectively) placed in the die-holder 1.

On the surface of the inlet cone 20 of the guide sleeve 3 is installed guide roller 12. In the central part of the inlet cone of the guide sleeve 3 there is a notch in which the centering rollers 13 are placed.

On the die holder 1 is fixed by means of a quick-release connection of the bobbin 14 frame with wire blank 15. The guide roller 12 is mounted on the surface of the inlet cone of the guide sleeve 3 at an angle Λ equal to the average angle of inclination (lifting) of the wire blanks 15 at its sinusoidal uniform (or multi-row) ) winding on reel 14. 35

The device works as follows.

The calibrated end of the wire blank 15 through the guide roller 12, the centering rollers 13 of the guide bushing 3 and the sealing insert 5 of the tapered yoke 4 is fed to the deforming matrix 2. After that, the reel 14 is fixed on the die holder 1 and placed into the container 45

(not shown). Make a fill fluid. The device is ready for operation.

The container creates the necessary fluid pressure, sufficient to start the process of hydraulic pressing.

Under the action of high-pressure fluid, the guide sleeve 3 rotates in bearings 10 and 11 in the direction opposite to the direction of winding the wire blank 15. ^{5 The} rotation of the guide sleeve is due to the fact that during the movement of the wire blank, the torque generated by the fixed wire bundle and on- ruling roller 12. This allows free and continuous flow of wire billet 15 On the guide roller 12, after

It is directed, without sharp bends, enters the centering rollers 13 and further, into the deformation zone of the sealing insert 5 of the tapered cage 4. Deformed in the sealing insert 5 with a slight degree of deformation, the wire blank 15 is pre-calibrated, cleaned of metal particles and dirt.

The radial grooves 8 and 9 serve to drain particles and contaminants from cavities 6 and 7 (i.e., from the deformation zone) to the container cavity. The retraction takes place due to the ‘hydrodynamic effect that occurs during high-speed pressing. Calibrated and cleaned wire billet 15 enters the deforming matrix 2, where it is formed to the size of the finished wire.

The proposed matrix node to the device for hydraulic pressing of the coiled wire provides for obtaining a high-quality product and reducing the hydraulic pressing force in comparison with the known one by 10–20%. At the same time, the breakage of hard-to-deform wire is significantly reduced, and its quality is improved.

Claims (2)

Claim 1. The matrix node to the device for hydraulic pressing of the coiled wire, containing a guide sleeve with a lead-in cone, a deforming matrix, a matrix holder and a tapered yoke with a sealing insert placed between the deforming matrix and the guide sleeve coaxially with them, characterized in that, in order to reduce the effort when pressing the wire from materials in a wider range of mechanical properties and diameters, it is provided with a rotational support for the guide sleeve mounted on the die holder, a guide roller mounted on the surface of the feed cone, and centering rollers, while in the Central part of the lead-in cone of the guide sleeve is made a notch to install the centering rollers. 2. The matrix node in π. 1, which is indicated by the fact that the guide roller is set at an angle corresponding to the average winding angle of the turns on the bay.