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CN-224222325-U - Three-high mill

CN224222325UCN 224222325 UCN224222325 UCN 224222325UCN-224222325-U

Abstract

The invention discloses a three-roller mill, which relates to the field of steel rolling equipment and comprises a plurality of groups of roller shaft assemblies, wherein the roller shaft assemblies are arranged on a machine core, the roller shaft assemblies are circumferentially arranged on the machine core, each roller shaft assembly comprises a roller ring, the roller rings are rotatably arranged on a sliding seat and are connected with roller shafts, the roller shaft assemblies are connected with a press, and the press is used for driving the roller shaft assemblies. The machine core is provided with a machine seat on the outer side, a gear motor is arranged on the outer side wall of the machine seat and used for driving a roll collar of a roll shaft assembly to rotate, a driving structure is arranged in a limited space structure, a traction roll and a straightening mechanism are not needed to be passed after the steel bar is rolled and formed, the outer circle of the steel bar is not worn, the product quality is ensured, the cold rolling efficiency of the cold rolled steel bar is improved, the roll changing operation can be efficiently carried out in a roll changing mode, and the roll changing efficiency is greatly improved.

Inventors

  • CHEN SHI
  • Shi Lulin
  • YIN HAIQING

Assignees

  • 河南南钢合力新材料股份有限公司

Dates

Publication Date
20260512
Application Date
20250520

Claims (8)

  1. 1. The three-roller mill comprises a plurality of groups of roller shaft assemblies, and is characterized in that the roller shaft assemblies are arranged on a machine core, and the roller shaft assemblies are circumferentially arranged on the machine core; The roll shaft assembly comprises a roll collar (5), the roll collar (5) is rotatably arranged on the sliding seat (2), and the roll collar (5) is connected with the roll shaft (3); The roll shaft assembly is connected with a press (8), and the press (8) is used for driving the roll shaft assembly; The outside of the machine core is provided with a machine base (13), the outer side wall of the machine base (13) is provided with a gear motor (14), and the gear motor (14) is used for driving the roll collar (5) of the roll shaft assembly to rotate.
  2. 2. The triple-roll mill according to claim 1, characterized in that the roll shaft assembly further comprises a swinging arm (1), the swinging arm (1) is provided with a groove for placing the sliding seat (2), and the sliding seat (2) can be movably adjusted in the groove along the length direction of the swinging arm (1).
  3. 3. The triple-roll mill according to claim 2, wherein the swinging arm (1) is provided with an adjusting screw (6), the adjusting screw (6) is arranged in the groove in a penetrating mode, the adjusting screw (6) is connected with the sliding seat (2) in a threaded mode, the adjusting screw (6) is used for adjusting the sliding seat (2) to move in the groove, a bearing seat (4) is arranged above the sliding seat (2), a roll collar (5) is arranged on the bearing seat (4), and the roll collar (5) is coaxially connected with the roll shaft (3).
  4. 4. The three-high rolling mill according to claim 2, wherein the movement comprises a plurality of groups of roller shaft assemblies, a front plate and a rear plate (7), the roller shaft assemblies are uniformly and circumferentially arranged between the front plate and the rear plate (7), each roller shaft assembly is rotatably arranged with the front plate and the rear plate (7), one end of the swing arm (1) is provided with a hinge shaft I (9), and the roller shaft assemblies are rotatably connected with the front plate and the rear plate (7) through the hinge shaft I (9).
  5. 5. The triple-roll mill according to claim 4, wherein a driving device is arranged at the other end of the swing arm (1), the driving device drives the roll shaft assembly to swing around a hinge shaft I (9), the driving device is a press (8), the press (8) is provided with a hinge shaft II (10), the press is connected with the front plate and the rear plate (7) through the hinge shaft II (10), a hinge shaft III (11) is arranged at the end part of a screw rod of the press (8), and the screw rod is rotationally connected with the swing arm (1) through the hinge shaft III (11).
  6. 6. The three-high rolling mill according to claim 1, wherein the interior of the stand (13) is a cavity, the movement is arranged in the interior of the stand (13), the exterior of the stand (13) is provided with reducing motors (14) with the same number as the roll shaft assemblies in a matching manner, the reducing motors (14) are in driving connection with a transmission shaft (12), and the other end of the transmission shaft (12) is connected with a roll shaft (3).
  7. 7. The three-high rolling mill according to claim 1, wherein a hoisting lifter (15) is arranged at the upper part of the stand (13), a chain wheel (16) is connected to the end part of a screw rod of the hoisting lifter (15), a chain is arranged on the chain wheel (16) in a matching manner, the other end of the chain can be connected with the movement, and the hoisting lifter (15) is connected with the movement through the chain wheel (16) and the chain.
  8. 8. The three-high rolling mill according to claim 1, wherein two guide rails (17) are symmetrically arranged at the position of the stand (13) close to the bottom, trolley (18) are arranged on the guide rails (17), the guide rails (17) are arranged below the trolley (18), and the trolley (18) slides on the guide rails (17).

Description

Three-high mill Technical Field The invention belongs to the technical field of steel rolling equipment, and particularly relates to a three-high rolling mill. Background The rolling mill equipment for producing the three-side rib cold-rolled steel bars is characterized in that the roll collars are uniformly distributed in a trisection way, and because the rolling mill is limited by a space structure, the rolling mill is difficult to be provided with a corresponding transmission system, the existing three-side rib cold-rolled steel bars are generally produced by adopting a drawing process, a three-roller rolling mill is not provided with the transmission system, but is provided with a traction roller at the upstream of the rolling mill, the steel bars are wound on the traction roller for a plurality of circles, and the steel bars are pulled by the driving force generated by friction of the traction roller, so that the passive rolling production is realized. The new national standard for cold rolled ribbed bars, GB13788-2024, was published and practiced in month 9 of 2024, which strictly requires the shape of three-sided ribbed bars, in particular the height of the transverse ribs of the bars. The steel bars produced passively by a drawing process are required to be straightened by a straightening mechanism when the straight bars are produced because the steel bars are required to pass through a traction roller after being molded. The two procedures inevitably generate strong friction on the outer circle of the reinforcing steel bar, particularly abrade the transverse rib of the reinforcing steel bar, and finally the quality of the product is not in accordance with the standard requirement. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide a three-roller mill, wherein after the steel bar is rolled and formed, a traction roller and a straightening mechanism are not needed, the outer circle of the steel bar is not abraded any more, the product quality is ensured, and at least one of the problems of the background technology is solved. The invention provides the following technical scheme: The three-roller mill comprises a plurality of groups of roller shaft assemblies, wherein the roller shaft assemblies are arranged on a machine core, and the roller shaft assemblies are circumferentially arranged on the machine core; the roll shaft assembly comprises a roll collar which is rotatably arranged on the sliding seat and connected with a roll shaft; the roll shaft assembly is connected with a press machine, and the press machine is used for driving the roll shaft assembly. A machine seat is arranged on the outer side of the machine core, the outer side wall of the machine base is provided with a gear motor, the gear motor is used for driving the roll collar of the roll shaft assembly to rotate. Preferably, the roll shaft assembly further comprises a swing arm, the swing arm is provided with a groove for placing a sliding seat, and the sliding seat can be moved and adjusted in the groove along the length direction of the swing arm. Preferably, the swing arm is provided with an adjusting screw rod, the adjusting screw rod is arranged in the groove in a penetrating mode, the adjusting screw rod is connected with the sliding seat in a threaded mode, the adjusting screw rod adjusts the sliding seat to move in the groove, a bearing seat is arranged above the sliding seat, a roller ring is arranged on the bearing seat, and the roller ring is coaxially connected with a roller shaft. Preferably, the machine core comprises a plurality of groups of roller shaft assemblies, a front plate and a rear plate, wherein the roller shaft assemblies are uniformly arranged between the front plate and the rear plate in a circumferential manner, each roller shaft assembly is rotatably arranged with the front plate and the rear plate, one end of the swing arm is provided with a hinge shaft I, and the roller shaft assemblies are rotatably connected with the front plate and the rear plate through the hinge shaft I. Preferably, the other end of the swing arm is provided with a driving device, the driving device drives the roll shaft assembly to swing around the hinge shaft I, the driving device is a press machine, the press machine is provided with a hinge shaft II and is connected with the front plate and the rear plate through the hinge shaft II, the end part of a screw rod of the press machine is provided with a hinge shaft III, and the screw rod is rotationally connected with the swing arm through the hinge shaft III. Preferably, the inside cavity that is of frame, core setting are in the inside of frame, and the outside of frame matches and is equipped with the gear motor equivalent with roller subassembly quantity, and gear motor drive connects the transmission shaft, and the transmission shaft other end is connected with the roller. Preferably, the upper portion of the machine base is provide