SU1409359A1 - Slewing and feeding mechanism for tube cold rolling mill - Google Patents

Description

(21) 4019533 / 31-02

(22) 02/10/86

(46) 07.15.88. Bnhp. (C 26

(71) Dnipropetrovsk Metallurgical Institute. L.I. Brezhnev and Dneprchermetavtomatika Scientific and Production Association

(72) C.N. Kozhevnikov, V.G. Voronko, A.S. Tkachenko, M.I. Greshpun,

G.I. Khaustov, V.A. Mironenko and E.P. Solodikhin

(53) 621.771.06-589.4.002.52 (088.8)

(56) Patent of Germany No. 1065356, cl. 7a, 21/06, 1957.

USSR Author's Certificate 1 532413, cl. B 21 B 21/04, 1975.

(54) TURNING-FEEDING MECHANISM OF THE COLD COOL ROLLING MILL

(57) The invention relates to pipe-rolling equipment, specifically to the rotary-feeding mechanisms of a cold-rolling mill. The purpose of the invention is to increase productivity and increase reliability. The rotary feed mechanism of the cold rolling mill includes an epicyclic converter of continuous rotation connected to a main drive into an intermittent and associated with it a semi-periodic mechanism in the form of a pulley 11 and a brake 12 having a pneumatic control system consisting of a pneumatic cylinder 13 and a distributor 14 with channels compressed air supply. A pneumatic motor 16 is connected to the carrier 6, the working cavities of which are connected to the working channels of the distributor. 1 il.

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The invention relates to pipeline equipment, and specifically to the rotary feeder of the Cold Rolling Mill of pipes.

The purpose of the invention is to increase productivity and increase reliability.

The drawing shows the device, the overall appearance.

The turning-feeding mechanism contains an epicyclic converter connected by the input shaft 1 through coupling 2 to the main engine of the mill, and through coupling 3, the sun gear 4, satellite 5 sitting on drive 6, gear wheel 7 with internal and external cuttings and gear wheel 8 - with nut 9 screws Yu feed. A pulley 11 with a shoe brake 12, having a pneumatic control system consisting of a pneumatic cylinder 13 with working cavities A and B and a distributor 14 connected by a shaft 15 with a main engine and having channels C and D connected to the working cavity, is rigidly fixed on the carrier. A and B of the pneumatic cylinder, grooves D and E, and channels Ж and 3. On the other hand, a pneumatic air from the channel I of the pneumatic motor connected to the carrier via the coupling 16 is connected to the working cavities I and K to the channels Ж and 3.

The mechanism works as follows.

steps into the cavity A of the pneumatic cylinder; moreover, part of the kinematic energy of the rotating masses (carrier with pulley, coupling, pneumatic motor rotor) is used with to increase the pressure in the rods

When the shaft 15 rotates, distribute -35 the cavity A of the pneumatic cylinder that raised 14 in the direction indicated by the arrow, through the grooves D and E, the connection or separation of the channels I and K of the pneumatic motor 17 and the alternate connection of the cavities A and B of the pneumo-40 cylinder 13 s channel and pneumatic motor or with the atmosphere.

When turning the distributor at an angle of up to 90 relative to the position.

It is effective brake performance, which, acting on the pulley, leaves the carrier and the pneumatic motor connected with it by means of the clutch 16. As a result of the rotation of the main engine shaft, through the clutch 2, the shaft 1, the clutch, the solar bristle 4 and the satellite 5. is transmitted to the gear wheel 7 with internal and external gearing and

the efficiency of the brake, which, acting on the pulley, stops the carrier and the pneumatic motor connected to it by means of the clutch 16, is effective. As a result of rotation of the main engine shaft, through clutch 2, shaft 1, clutch 3, sun bristle 4 and satellite 5. is transmitted to gear wheel 7 with internal and external gearing and

specified in the diagram, through the groove D pro-45 further to the gear wheel 8, the connection between the cavities I and K of the pneumatic motor interconnects, as well as the connection of the channel I of the pneumatic motor with cavity B of the pneumatic cylinder 13 (cavity A of the pneumatic cylinder at the same time through 50 groove E, with the atmosphere). As a result, the compressed air from the channel K of the pneumatic motor enters the channel Ж and then through the slot D of the distributor to the cavity B of the pneumatic cylinder. Brake 55 12 releases pulley 11 and the main engine shaft is broken by clutch 2, shaft 1, clutch 3, sun gear 4 and satellite 5 is transmitted to carrier 6,

with nut 9 screw 10 feed. The latter is moved by performing a stepwise feed within the specified angle of rotation of the distributor. In the following, the cycle repeats.

The change in feed rate is made by changing the frequency of the main motor shaft. The rotation mechanism of the rotary feeder wall is similar to the described feed mechanism. The use of a pneumatic motor, the working cavities of which through the distributor are connected to the supply channels

0

and through the coupling 16 - to the rotor of the pneumatic motor, which does not interfere with the rotation of the carrier, since its channels I and K are interconnected through the slot D of the distributor. Upon further rotation of the distributor at an angle of up to 270 relative to the position indicated in the diagram, the cavity B of the pneumatic cylinder separates from the pneumatic motor channel I and connects it through slot E to the atmosphere (the cavity of the second pneumatic cylinder is still connected to the atmosphere). Since at the same time

5, the channels I and K of the pneumatic motor remain interconnected through the groove D of the distributor, and the cavity A and B of the pneumatic cylinder through the groove E are connected to the atmosphere, neither the pneumatic motor nor the brake prevents the carrier from rotating freely. Upon further rotation of the distributor to the position indicated in the diagram, the channels I and K of the pneumatic motor break up

5 between each other and the connection through the groove D of the distributor of the channel And the pneumatic motor with the cavity A of the pneumatic cylinder (the cavity B of the pneumatic cylinder is still connected to the atmosphere). At the same time compressed

0

steps into the cavity A of the pneumatic cylinder, and a part of the kinematic energy of the rotating masses (carrier with pulley, coupling, pneumatic motor rotor) is used to increase the pressure in the rod

cavity A of the pneumatic cylinder, which increases the efficiency of the brake, which, acting on the pulley, stops the carrier and the pneumatic motor connected to it by means of the clutch 16. As a result of rotation of the main engine shaft, through clutch 2, shaft 1, clutch 3, sun bristle 4 and satellite 5. is transmitted to gear wheel 7 with internal and external gearing and

further on the gear wheel 8, connected

further on the gear wheel 8, connected

with nut 9 screw 10 feed. The latter is moved by performing a stepwise feed within the specified angle of rotation of the distributor. In the following, the cycle repeats.

The change in feed rate is made by changing the frequency of the main motor shaft. The rotation mechanism of the rotary feeder wall is similar to the described feed mechanism. The use of a pneumatic motor, the working cavities of which through the distributor are connected to the supply channels

3

The air to the brake pneumatic cylinder allows to use part of the kinetic energy of the rotating driven mass of the converter to increase the air pressure in the rod end of the pneumatic cylinder, as a result of which the braking efficiency increases both as a result of the growth of the braking force and as a result of a more favorable increase in the clamping force of the brake shoes.

At the same time, the work of the friction forces is reduced, since a part of the kinematic energy of the secondary spindle masses of the converter is spent on increasing the potential energy of compressed air entering the hydraulic cavity of the brake pneumatic cylinder, as a result of which the dynamic loads in the elements of the mechanism are reduced, the brake pad wear is reduced and the durability of the mechanism is increased

generally. It becomes possible to control the pneumatic motor, the working cavities corroding the values of the kinematic energy, which turns into a potentiometer, communicated with the working channels of the distributor.

the compressed air energy; by selecting the appropriate slot sizes of the distributor.

Claims (1)

Invention Formula Rotary feeding mechanism of the mill (cold rolling pipes containing an epicyclic converter of continuous rotation into intermittent and connected to it with a main drive; a periodic action mechanism in the form of a pulley and brake having a pneumatic control system consisting of a pneumatic cylinder and a distributor with channels for supplying a working agent connected to the corresponding working cavities of the pneumatic cylinder characterized in that, in order to increase productivity and increase reliability of operation, it is equipped with a pneumo coupled to an epicyclic converter. this position the, working cavity to Secondly communicated with the working channels of the distributor.