SU357788A1 - Machine for pressing products - Google Patents

Description

The invention relates to installations for the processing of metals by pressure, in particular to high-speed impulse action machines, using food from high-pressure gas.

Machines for pressing products are known that contain power assemblies mounted on the frame, connected to a working plunger, and a movable workpiece with a matrix fixed on it, inside which a movable punch is installed.

However, such machines do not provide opportunities for the manufacture of products, for example, consumable titanium electrodes, of unlimited length. This is due to the fact that on pulsed briquetting machines the existing schemes are difficult to ensure accurate regulation of the required work of briquetting the next portion of the electrode at a sufficiently long interval of change of the stroke of the punch with the rod, since as the length of the electrode increases, the punch decreases, and therefore it is necessary each time to change the impact energy.

present dp is forming consumable electrodes.

The purpose of the invention is the manufacture of products of a given length.

For this, the proposed machine is equipped with a pusher latching mechanism in a predetermined position, designed in the form of a switchgear mounted on a ram and an end switch electrically connected to it, provided with a lever inserted into the grooves provided on the punch. The distance between the grooves is equal to the pressure viewer. With the aim of reducing the push force into the matrix of the formed part of the electrode in hpoHeqe & portions of a dry press and of the finished electrode of the matrix, supporting stockpanson equipped with a lubricating device. “Such a machine makes it possible to obtain, during cold pressing, electrodes of the required length with a density of 4 g / cm, which is of decisive importance for the process of smelting titanium. In addition, the high density of the electrode allows an increase in the content of conditioned Kj CKOBbix waste in the pressed titanium charge and at the same time decreases

the required amount of sponge, which allows to obtain a significant action effect.

The execution of the punch with recesses under the limit switch allows also to automate the batch pressing process on the proposed machine with a minimum of equipment.

The drawing shows the proposed machine.

It contains a receiver, in the cavity of which there is a gas under pressure of 200-250 atm. A cylinder 2 is mounted in the receiver with a rod 3 terminating in a piston-plunger 4, which is a plunger of the spool, the cylinder 2 itself serves as a housing. In the same cylinder 2 a piston 5 is installed on the rod 3, displacing the liquid coming from the hydroelectric station through a fitting 6. In the channels connecting the gas cavities of the receiver and the cylinder, adjustable throttles 7 and 8 and a check valve 9 are installed.

The rod 3 during acceleration acts on the titanium charge 10, which is located in the working plane, which is formed by the matrix 11 and the punch 12 with depressions under the lever of the limit switch 13, okanayayu1Sh1ms piston 14, movably mounted in cylinder 15, made in shatoo 16. Pecjff , the matrix and the workbench are rigidly connected with each other by columns 17. Between the case of a usaoak and its stan {oG1 (not shown) are installed 1 llew alutizers 18, for example spring, fia is based 11 {cylinder 15 mounted rasprye.-iggel 19, one of the taps which drowned out Mr. On puaxok 12 mounted lubricating device 20.

Us1; and (ozka rabagasg as follows.

The plug-in piston 5 under the pressure of the hidkosgi, yaho; rod to the rod cavity of the cylinder 2. holds the gyrushi-shshunzher 4 above so that it blocks the access of high pressure gas from the receiver 1 through the intake ports in the cylinder 2. the team to perform the rod stroke : The cavity 1, the hydraulic cylinder ad 2, is connected to the drain of the master; 1 hydraulic system, and the floating piston 5 under the action of the pressure of the gas passing through the adjustable throttle 7, forces the liquid out of the rod end of the cylinder 2 through the nozzle 6. The adjustable throttle 8 adjusts Kim manner that the rod 3 is moved only after the floating plunger 5 occupies its lower position. As soon as the piston-pluker 4 moves, it opens the inlet ports in the cylinder 2. The high-pressure gas acts on the piston-plunger 4, accelerates it, transforming the energy of the high-pressure gas into the kinetic mixing energy of the rod 3, which is spent on converting the next electrode into a consumable electrode. the piston joint titanium junction confined between the walls of the matrix 11 and the end face of the punch 12. The fluid located at 14 in the cylinder 15 impedes the downward movement of the gguanson.

The pressing force, vibrated by the supporting punch 12 with the piston 14, is transmitted through the fluid to the cylinder 15, and then to the workpiece 16 and with the aid of the columns 17 it closes on the resolver 1. In the process of moving the rod 3 downwards, the installation body moves upwards. After the end of the strike, the installation, under its own weight, is lowered down onto the amorgisasors 18.

At the end of pressing the first batch of titanium powder, the piston cavity of the cylinder 15 is connected to the drain line of the hydraulic system and the brush 3, which has a power reserve under the action of high-pressure gas, which is constantly in the receiver, pushes the compressed electrode layer, and through it the punch 12 down until the limit switch lever misses the recess on the punch 12, which determines the height of the next compacted layer. As a result, the limit switch sends a signal to

dispenser 19, which locks the fluid under port 14 in the cylinder. jDLnB of reducing the pushing force of the compressed electrode layer onto the walls of the matrix is supplied with an appropriate lubricant with the help of a lubricator 20. After

lock the fluid in shchindry 15 command is given to the introduction of the rod 3 ,. Fluid from the pressure line is fed through fitting 6 under the floating piston 5, which, when lifted, carries the piston-plunger 4 behind and presses it to the upper

the end face of cylinder 2. Then, after filling the matrix with the next batch of titanium plaster, then a command is issued to complete the next working stroke, and the cycle is repeated.

At the end of the pressing process, after; 1st

portions of the titanium charge stock 3 vzvakktts so, wo piston-plunger 4 does not go into the iaiiMpaiomee device, in order to ensure that it can smoothly lower it. After that, the distributor 19 connects the piston cavity of the cylinder 15 to the pressure line of the hydraulic system, and the punch 12 pushes the finished electrode, and at the same time the lubricator 20 lubricates the working surface of the die. The finished electrode is removed from the working area of the installation, after which the piston

the cavity of the cylinder 15 is connected to the drainage of the hydraulic system, and the rod 3 smoothly lowers the punch 12 by the amount needed to fill the first batch of titanium charge for the next electrode. The limit switch gives the signal to

the liquid is locked under the piston 14 of the cylinder 15. The rod 3 is cocked, then the first portion of the titanium charge is poured for the next 31 {m, and the cycle repeats.