SU1696509A1 - Plant for thermal treatment of long articles - Google Patents

Abstract

The invention relates to the processing of long steel strips and bars with induction heating in heat treatment lines and hot stamping in mechanical engineering and metallurgy. The purpose of the invention is to increase the reliability of the installation by eliminating distortions and jamming while maintaining the quality of heating. The installation includes an inductor, a discharge mechanism with a gravity-eccentric clamp and a product feed and loading mechanism, made in the form of a pusher with a length equal to the length of the inductor. The use of gravitational-eccentric clips allows you to prevent the distortion of long parts when they are transferred between operations and to ensure the reliability of the installation without jamming. Performing a pusher with a length equal to the length of the inductor ensures its release from the parts in it from any position without disturbing their heating. “1 Il. s / s

Description

The invention relates to the processing of long steel strips and bars with induction heating in heat treatment lines and hot stamping in mechanical engineering and metallurgy, in particular to the processing of spring leaves.

The purpose of the invention is to increase reliability in operation by eliminating distortions and jamming while maintaining the quality of heating.

The drawing schematically shows the proposed installation.

The installation consists of fixed 1 and movable 2 rulers with dogs 3, inductor 4 with conductors 5, discharge grippers 6 with eccentrics 7 rotating on axis x6 and connected to lever 9, which

rests on the anvil 10. The discharge grips 6 are suspended on the strips 11, which through the levers 12 (on the axes 13) and the rods 14 are connected to the drive 15.

In addition to the sheet feeding mechanism, consisting of fixed 1 and movable 2 rulers with dog 3, there is a pusher in the form of a gate 16 rigidly connected to the rack 17 and moving the product in the inductor. A gear rack 17 is mounted under the gear 18, which rests on the rack 19, which is rigidly connected to the pneumatic cylinder 20. The gear 18 is connected to the pistons 21 and 22 of the pneumatic cylinder 23.

The installation works as follows.

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From the drive 15, the gigs 14 move downward, turning the axles 13 to the levers 12, which in an arc forward guide the strips 11c to the grippers 6, freeing the eccentrics 7, which fall under their own weight. Thus, the grippers 6 approach the inductor 4 and occupy the position shown by the dash-dotted line.

With a slight delay from the actuator 15 through the system of levers 24, the moving rulers 2 move to the inductor 4, using 3 dogs of the 25 spring leaves. After the sheet has reached the position a, the pneumatic cylinder 20 (air supply to the rod cavity) is actuated, and the rack 19 moves to the pneumatic cylinder 20, rotating the gear wheel 18, which sends the rack 17 with the gate 16 forward to the inductor, while the gate 16 feeds the sheet position a to position in (mine position b).

In this case, the sheets in the inductor are shifted by one position (sheet width), and the extreme heated sheet lying at the exit of the inductor (position e) falls into the grip of the discharge device 6. where it is clamped by the weight of the eccentric 7. Next, the discharge device 6 is a system of levers 12-14-15 moves from the position indicated by dash-dotted lines to the position indicated by solid lines. The lever 9 rests on the anvil 10 and the heated sheet is released from the clamp by the eccentric 7. Since the grippers 6 are located between the rollers of the roller table (not shown), then the sheets move along the roller table for further processing.

After the heated sheet is taken away by the roller table, the unloading device 6 with the eccentric 7 returns to the position indicated by dash-dotted lines and waits for the next cycle to start, which repeats every 20-26 seconds. In this order, the device operates continuously during the work shift.

At the end of the work, or if it is necessary to stop the installation in the absence of the workpiece at position a, the upper pneumatic cylinder is turned on by supplying air to the piston 21, which, like a gear wheel 18, uses a fixed rail 19, feeds the rail 17 with the gate 16 and pushes the workpiece from position to the position of During the next cycle, air is supplied under the pistons 21 and 22 and the billet is pushed from position g to position e. During the next cycle, air is supplied under the piston 21 and into the rod cavity of the pneumatic cylinder 20, and the billet is pushed out of position and d to position e. When supplying (on the last cycle) air under the piston 21 and 22 and into the rod

the cavity of the pneumatic cylinder 20, the blank from the position e is pushed into the grippers 6. At the end of each cycle in order to reduce losses on the heating of the gate 16, the last

each time it returns to its original position.

Thus, the use of the proposed facility allows, during continuous operation during the work shift

supply the next part to the first position in the inductor from a distance where there is practically no effect of the electromagnetic field of the inductor (from position a to position c, mine position b), which

prevents their unilateral heating, i.e. high quality processing is ensured; if necessary, it stops the installation or, if there are no spare parts on the boot device, it gradually (step by step) releases the inductor from the parts in it without disturbing the normal mode of heating, i.e. high quality processing of all 100% parts is provided; application

gravity-eccentric clamps helps prevent long parts from being skewed when being transferred from the heating inductor to further processing and thus ensure reliability,

failure-free operation of the installation, eliminates jamming of the installation.

At the same time, the gravitational-eccentric clamp provides automatic “fixing of the part in the unloading device at the moment when the part leaves the inductor and automatically releases it after transfer for transfer to subsequent processing operations. The clamp is simple in design: it consists only of an eccentric and axis, i.e. does not contain any elements (eg springs) that can cause instability or failure in operation.

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Claims (1)

Invention Formula Installation for heat treatment of long products, containing sequentially arranged feed mechanisms products, load in the form of a pusher, an inductor and an unloading mechanism in the form of a drive lever system with a grip, characterized in that, in order to increase reliability in operation by eliminating distortions and jamming of the products while maintaining the quality of heating, the grip is made with a gravity-eccentric clamp , and the pusher is made of a length equal to the length of the inductor, and with the possibility of positional movement along the inductor. B 20