SU1258624A2 - Powder-pressing apparatus - Google Patents

Description

The invention relates to powder metallurgy, in particular, to devices for the manufacture of long articles from metal powders, and is an improvement of the invention according to the authors. No. 1197774.

The purpose of the invention is the expansion of technological capabilities.

Fig. 1 shows a schematic of a device for pressing powders; in fig. 2 shows a section A-A in FIG.

The device consists of a loading hopper 1, a hollow punch 2 rigidly connected to the matrix 3. V from 10

press to punch 1 he makes a working move down. The powder portion is compacted and then pushed through the opening of the mouthpiece 4. At the same time, the needle 8 connected to the hydraulic rods 9 also moves downward. At the end of the working stroke P5, the needle 2, the needle 8 is in the lower position, and its end covers the opening of the punch 2. At the beginning of the idling of the punch 2, the upward needle 8 is stationary, as a result of which the plug formed in the hole of the punch 2 is destroyed. After that the needle

the matrix version is set mouthpiece 4, 15 rises to the highest position

speeds with scoopscrews 5 serve to limit

Punch lifting speed during idling. The hole of the punch 1 is released. During the idling time of the punch 2, the next portion of the powder enters the cavity of the matrix 3, and the cycle repeats. The product, the passage through the heating element 7, made in the form of an inductor, is sintered in a protective atmosphere.

the stroke of the matrix relative to the mouthpiece. A spring 6 is installed between the mouthpiece and the die to lift the die. A heating element 7 is installed at the exit of the mouthpiece. A needle 8 is placed in the cavity of the punch along its axis, the movement of which is communicated from the hydraulic cylinders 9. The device is fixed on the press table 10. The pressing force is communicated to the punch from the ram 11 press.

The device works as follows.

The powder from the feed hopper 1 enters through the hole of the punch 2 into the cavity of the matrix 3. When a pressing force is applied from a slider 11

press to punch 1 he makes a working move down. The powder portion is compacted and then pushed through the opening of the mouthpiece 4. Simultaneously, the needle 8, which is connected to the hydraulic rods 9, simultaneously, also moves downwards. At the end of the working stroke P5, the needle 2, the needle 8 is in the lower position, and its end covers the opening of the punch 2. At the beginning of the idling of the punch 2, the upward needle 8 is stationary, as a result of which the plug formed in the hole of the punch 2 is destroyed. After that the needle

rises to the highest position

at a speed exceeding the speed

Punch lifting speed during idling. The hole of the punch 1 is released. During the idling time of the punch 2, the next portion of the powder enters the cavity of the matrix 3, and the cycle repeats. The product, the passage through the heating element 7, made in the form of an inductor, is sintered in a protective atmosphere.

Thus, the presence of a movable needle placed in the cavity of the punch, allows to expand the technological capabilities of the device by obtaining products from plastic and sticking metals, such as aluminum, copper, etc., which is impossible when using the known device.

Editor A. Sabo

FIG. 2

Compiled by I.Kinsky Tehred M. Margental

Order 5069/15 Circulation 757 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d 4/5

Production and printing company, Uzhgorod, st. Project, 4

Proofreader S. Shekmar

Claims (1)

DEVICE FOR PRESSING POWDERS by ed. No. 1197774, which is characterized in that, in order to expand technological capabilities, it is equipped with a needle mounted in the cavity of the punch with the possibility of axial reciprocating movement. Fng1 SU ,,,, Γ258624 A 2