All direction multifunctional adjustment disc extending machine

Abstract

The invention relates to an omnidirectional multi-functional disk type elongating mill, the diameters of an upper and a lower guide disk are increased; the lifting of the upper guide disk adopts a turbine, a worm and a leading screw device; the lifting of the lower guide disk adopts a standard spiral elevator; and the axial direction adjustment is realized by the standard spiral elevator; the positive direction location, lateral direction location and upper and lower direction location are realized by a hydraulic cylinder. The axial direction adjustment of the roller is realized by the standard spiral elevator; the radial direction is adjusted by the combination of a non-standard spiral elevator and the hydraulic cylinder; the locking device adopts the hydraulic cylinder and an adjusting wedge mechanism. Guide bushes of an outlet and an inlet port adopt the upper-pressing and lower-locking of the hydraulic cylinder. The reliability is increased by adopting the hydraulic system; the enlarged diameters of guide disks can improve the locking condition of the roller, the elongation coefficient is increased, screw threads in the steel tube are reduced after rolling, and the variety of products is enlarged; gaps of the axial direction and radial direction of the guide disks and the roller are reduced, and the stability of the rolling is strengthened; the structure of the side pressure oil cylinder of the roller is simple, and the running is reliable; the guide bushes of the outlet and inlet port adopt the upper-pressing and lower-locking device to realize the double-assurance.

Description

technical field [0001] The invention belongs to the field of steel rolling machinery and equipment, and in particular relates to a disc stretching mill for rolling seamless steel pipes. Background technique [0002] Most of the seamless steel pipe rolling mills built in my country in the 1980s are 100-unit disc stretching machines, which are mainly composed of left and right rolls, upper and lower guide discs, and exit and entrance nozzles. With the advancement of rolling technology, especially seamless steel pipe rolling, and the increasing demand for products with increasing quality and variety, the disadvantages of the 100-unit disc stretching machine are backward in technology, insufficient in equipment capacity, and limited in production varieties. and highlight. The main problems that appear are: the diameter of the upper and lower guide discs is small, only 1000mm, which affects the improvement of output and quality, and the increase of variety and rolling elongation...

AI Technical Summary

Problems solved by technology

The main problems that appear are: the diameter of the upper and lower guide discs is small, only 1000mm, which affects the improvement of output and quality and the increase of variety and rolling elongation

The upper guide plate is adjusted up and down by the worm gear, worm, and screw mechanism, and the gap cannot be eliminated

The lower guide plate adopts a non-standard turbine, worm, and screw mechanism to adjust and lift. This structure is difficult to maintain and cannot be replaced.

The axial adjustment of the roll is done by adding backing plates manually, which is time-consuming, laborious, unsafe and has large errors

The roll side press-in hydraulic cylinder is supported by the frame, and the structure is cumbersome

The roller side pressing adjustment mechanism is composed of non-standard turbine, worm and gear mechanism, which is not only complex in structure, difficult to maintain, but also difficult to deal with oil leakage

The roll locking mechanism is composed of oil cylinder, bellcrank, disc yellow, pressure head, etc. The structure is complicated, the effect is not good, and it is almost in a state of failure.

The guide sleeves of the outlet and inlet nozzles are locked by the hook head of the lower cylinder, and the guide sleeves cannot be locked, and the phenomenon of slipping occurs

In addition, there is no gap elimination device in the vertical and horizontal directions of the guide plate, so that the guide plate and the roll jump during the rolling process, which seriously affects the stability of rolling and the product quality of seamless pipes.

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