SU1225628A1 - Arrangement for setting upper guard in screw rolling mill - Google Patents

Description

 The invention relates to the processing of metals by pressure, in particular to tube production, and concerns the improvement of devices for placing the line in the stand of a screw rolling mill.

The purpose of the invention is to increase the productivity of the mill.

FIG. 1 shows the device, a general view; in fig. 2 - the same, side view; in fig. 3 - the same, a variant from the Dineny of the Power cylinder with a crosspiece; FIG. 4 shows the position of the L-shaped lever (when the rod moves upwards) when opening the linear holder-bodies} in FIG. 5, the same when raising the holder line,

A device for installing a ruler in a helical rolling mill consists of a crosspiece 1 with an emphasis 2, an actuator 3 of its movement in a vertical plane in the form of two screw mechanisms j of a strip holder 4 with a ruler 5 whose connection with the crossbar is articulated in the form of an axis 6 passing through the eye 7 the bracket holder, and the bracket 8, is located - on the traverse, the rod 9, its vertical movement drive in the form of a pneumatic cylinder 10, an L-shaped double-arm lever, hinged on the ruler holder through the axis 11 passing through the second eyelet 12 of the rake holder and connected pivotally through the axis 13 by one shoulder 14 with a rod, and the second shoulder 15 having a profile end that interacts with the traverse stop. Pneumatic cylinder 10 can be connected to the traverse both pivotally (Fig. 1) and through auxiliary elements, such as rack 16 (Fig, 3).

The device works in the following way.

Before rolling, the ruler 5 is installed in a vertical plane in the position required according to the rolling table by means of the screw mechanisms of the drive 3 movement, which moves the yoke 1 and the encoder line 4, the L-shaped lever keeps the ruler in the working position with the lowest position of the rod 9, wedging at This stop 2 is a traverse and a linear holder with axles 6 and 1 1, which further perceive the rolling force.

After the rear end of the tube passes the pinch of the rolls and the load on the rolls decreases sharply, a command comes from the sensors to the pneumatic cylinder 10, the piston of which starts moving upwards and the barbell 9 opens the holder 4, raising the L-shaped lever, the shoulder 15 of which first departs up to the stop 2, turning at the same time around the axis 11, then turning at the same time. further around the same axis, the linear holder rests against the body of the rake holder, and with further progress of the rod upwards. rotates around axis 6 until l-shaped. lever arm; moving upwards with the axis 11 on the line-holder, does not come into contact with the stop 2 (Fig. 4 and 5). In this case, the distance between the upper ruler and the lower one on the output side of the deformation zone increases, the pipe is released and protrudes from the output side of the mill.

As soon as the pipe leaves the hot spot .J on the output side of the metal, a signal, for example, a photosensor, is supplied to the pneumatic cylinder compressed and its piston together with the piston. goy begins to descend. In this case, the line holder rotates around axis 6 to the position at which the ruler presses the horizontal working position.

 With further downward movement, the bar rotates over its shoulder the 14th L-image of the VJ

 Now there is a lever around the axis 11, where the shoulder of the shoulder 15 comes into contact with the stop 2 and the axles 6 and 11, i.e., locking the rake holder and lowering it together with the upper ruler, and the ruler is set to the working position

0

45

After rolling the next pipe, the described operations are repeated.

The advantage of the proposed device for the installation of the upper line in the mill compared with the known

5P becomes stuck in the fact that when the piston moves upwards, the ruler-holder first opens and continues to rise along with the ruler, while during the shtangi stroke also

55, the rake holder with the ruler is lowered first to the lower position, and then it is locked. Due to this, the speed of the mechanism when lifting the encoder line increases, which will reduce the work cycle of the mill and, accordingly, increase its productivity.

In addition, the design is simplified due to the fact that one air cylinder and opens the linear holder, and raises it with the ruler upwards.

IS

Fm.z

Phage. five

Editor V. Petrash

Order 2019/7 Circulation 518 Subscription

VNIIPI USSR State Committee

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

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

Compiled by L € Maturina

Tehred G.Gerber Proofreader S.Shekmar

Claims (1)

A DEVICE FOR INSTALLING A TOP RULE IN A SCREW ROLLING STAFF, including a cross-arm with a stop, its vertical displacement drive, a line holder pivotally mounted on it, a rod located between the cross-arm and the line holder and its position, which is equipped with a two-arm G-shaped lever pivotally mounted on a linear holder and pivotally connected by one shoulder with a rod, while the other shoulder is made with a profile end face and placed in cooperation with an emphasis is a vertical displaced drive order to increase production SU, „1225628