SU663736A1 - Blank heating device - Google Patents

Description

(54) INSTALLATION FOR HEATING BLANKS

I

The invention relates to equipment for heat treatment of products for stamping and can be used in all branches of the national economy, in which progressive methods of precise stamping and heat treatment of products are used.

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Known installation for heating in -. cookers, containing vertically mounted inductors, and a pusher l.

Also known is an installation for heating billets, comprising an inductor, an electric furnace, a loading mechanism, a transport device 2.

However, as a result of the use of these plants, the workpieces are deformed during their heating and transportation. This is because the extreme, most heated workpieces, when pushed, experience the pressure of the entire column of workpieces, as a result of which they are deformed and poor-quality stampings are obtained.

The aim of the invention is to eliminate the deformation of the blanks during their heating and transportation.

For this purpose, the installation is equipped with a pusher placed in front of the electric generator's charging chamber, and the inductor is installed perpendicular to the longitudinal axis of the electric furnace, under which it is made in the form of matching beams.

.In FIG. 1 shows the installation, longitudinal section; in fig. 2 - top view.

The installation consists of a carrier frame 1, on which the mechanism 2 pickups of the original blanks 3, pusher 4, K1 loading mechanism 5 with loading prisms 6, receiving device 7 with spring-loaded lugs 8 are mounted. On receiving device 7 there are three single-phase solenoid inductors 9 closed with a hermetic tambour 10, on which the plunger 11 is mounted. The tambour 10 is fastened to the fsgrowed frame of the resistance furnace 12, on

Heaters 13. are mounted to the inner walls of the walls. For transporting the workpieces along the furnace, under the walking beams, which with their rollers 15 rest on the trolley 16. The rollers 17 of the trolley 16 rest on the rails 18 with a sloping section. The beams 14 and the trolley 16 are harnessed by means of rods with the mechanism 19 of the pitch i of the beams. At the discharge end of the furnace, a driving roller conveyor 2O is mounted on the frame and three independent mechanisms 21 for unloading heated blanks from the furnace.

In order to prevent the heated blanks from getting hot and their oxidation, the burner 22 of the fiery curtain is installed at the discharge end of the furnace. The blanks 3 are transported to the installation; conveyor 23 ..

The installation works as follows.

In the initial position, the industor 9 is turned on, the electrical parameters correspond to the nominal 1M sign, the heaters 13 of the resistance furnace are turned on, the temperature in the zones corresponds to the specified technological process, the inductors 9 are fully loaded with heated billets, in the furnace (above the walking beams 14) the blanks are located The flame veil of the burner 22 is lit.

The layout mechanism moves the workpiece (one at a time) from the conveyor 23 to the inductors, spreading them coaxially to the inductors. The pusher 4 moves the original blanks to the loading prisms b, after which the loading mechanism 5 billet the three at the same time the three move to the inductors 9. When running upward, the spring-loaded lugs 8 open, the upper heated billet in each

the inductor rises above the inductor and moves the pusher into the working space of the resistance furnace. As it goes down, the loading mechanism 5 leaves a column of blanks on the spring-loaded stops. The walking beams (three at the same time) 14 using the mechanism 19 for stepping the beams and the trolley 16 rise above the stationary level of the furnace groove, lift the workpieces and move them and the tag to the discharge end of the furnace. Those who have gone through .. - the heating cycle of the workpiece (extreme) alternately are unloaded by the mechanism 21 Unload onto the drive roller table 20 and quickly move to the stamping zone. After unloading the three heated blanks from the furnace, the cycle repeats.

Claims (2)

Invention Formula one; An apparatus for heating billets comprising an inductor, an electric furnace, a loading mechanism, a transport device, characterized in that. That, in order to avoid deformation of the blanks during their heating and transportation, the installation is equipped with a pusher placed in front of the charging end of the electric furnace, and the inductor is installed perpendicular to the longitudinal axis of the electric furnace. 2. Installation according to claim 1, concerning the fact that under the electric furnace. It is designed as walking beams. Sources of information taken into account in the examination 1.Sokolov KN. Mechanization and automation in thermal workshops, M., Mashchgiz, 1967, p. 123. 2. USSR author's certificate number 96238, cl. From 21 and 9/00; 195O.