SU1404177A1 - Arrangement for compacting articles from powder - Google Patents

Abstract

The invention relates to devices for pressing products from powder. The aim of the invention is to simplify the design of the device. It consists of the frame 1, the forming elements 2, the bottom plate 3. The device is equipped with a synchronizing disk 15 driven by a hydraulic motor 16. The work is carried out by rotating the synchronizing disk having projections and depressions that act on the forming elements. The proposed design eliminates the drives of radial forming punches, hydraulic distributors and other large-sized parts, thus allowing to simplify the design. 2 Il.

Description

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The invention relates to powder metallurgy, namely, devices for pressing products from powder, and can be used in all areas of mechanical engineering for the manufacture of shaped tools — disc, rod, circular profile cutters and other parts made of hard alloys and high-speed bodies, their steels. .

The purpose of the invention is to simplify the design of the device.

FIG. 1 shows the device, a general view; in fig. 2 shows section A-A in FIG. I.

The device is mounted on the frame 1, on which there are six radially arranged elements 2, which, when moving in guides, are in contact with the bottom plate 3, the top plate 4 and the mold sectors 5. A rod 6 is installed in the central stepped hole of the bottom plate, along which the annular pusher-ejector 7 moves with the drive from the hydraulic cylinder 8 through the transfer rods 9, which pass into the holes of the base of the central rod.

The central hole of the upper plate through the dispenser 10 enters an annular collection punch 11, which is centered on the rod 6 with its opening. The upper punch is driven by a hydraulic cylinder 12, which is mounted on the yoke 13 and two columns 14. A circular groove of the punches and sectors is installed in the ring groove a cam synchronizer disk 15 driven by a high-torque hydraulic motor 16 through the driving gear 17, which is fixed to the hydraulic motor shaft.

Springs 18 are installed to displace the punches to their initial position between their tips and the ends of the sectors. The working cavity, in which the parts are pressed from powder, is formed by a lower mold plate with a central core and an ejector punch in its lower position, six forms. - chucking elements and the upper plate of the mold with an annular collection punch. The vertical cylinders and the hydraulic motor are driven by a single hydraulic pump (not shown).

The device works in the following way.

Powder is poured into the working cavity through the dispensing glass 10 and the hole in the top plate 4 with the retracted punch 11 and the forming elements 2 of the matrix, which in the diluted position abut against the cam hollows with their ledges

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Yes, the synchronizer disk 15. After closing by the upper punch and preliminary pressing of the powder, a compression stroke is made by the molding unit 2, the force on which is developed by the rotating cam synchronizing disk 15 from the high-torque hydraulic motor 16 through the pinion gear 17. The compression cycle ends when the tops of the molding protrusions elements 2 and the cam synchronizer disk 15.

Upon further rotation of the disk 15, the forming elements 2, having constant contact with it under the action of the spring 18, return to their original (diluted) position, when the stops of the forming elements coincide with the depressions of the cam disk. The pressing cycle ends after the upper punch 11 is retracted, the product is pressed out from the central rod 6 by the punch-punch 7. Then the punch-pusher returns to its original position.

The pressing cycle is resumed.

Thus, by eliminating the hydraulic cylinders for driving the radial forming elements, flow controllers, slide valves, limit switches, cam mechanisms installed at the ends of the hydraulic cylinders, stops for contacting the limit switches, and also reducing the radial dimensions of the frame by eliminating the radial hydraulic cylinders device design is greatly simplified.

Claims (1)

Invention Formula A device for pressing products from a powder containing a matrix made in the form of molding elements installed with the possibility of radial movement, a central rod, clamping plates, sectors, an annular collection punch, a ring punch with an ejector, hydraulic cylinders, and hydraulic pumps, characterized in that , in order to simplify the design, it is equipped with a cam synchronizer disc with a drive, springs mounted on the forming elements, while the forming elements and sectors are made with ring groove, and the synchronizer disk is installed in the ring groove with the possibility of contact with the forming elements and sectors. xl-d / 7 FIG. 2