Hot rolled flat steel slitting guide device

Abstract

The application provides a hot-rolling flat steel cutting guide device, which comprises a cutting roller group and a separating roller group arranged in sequence from upstream to downstream. The cutting roller group and the separating roller group cut a flat steel blank A first, and then separate and guide the flat steel blank A, so that the cut flat steel blank is transported to a rolling mill in the downstream to implement subsequent rolling, and two finished flat steels can be produced from one blank, so that the hot-rolling efficiency of the flat steel is improved, and the output is greatly improved, and the economic benefit is high.

Description

TECHNICAL FIELD

[0001] The present application relates to flat steel rolling equipment, in particular to flat steel slitting rolling equipment. BACKGROUND

[0002] Flat steel refers to steel material with width of 12-300mm, thickness of 3-60mm, and rectangular cross section with slightly blunt edges. The flat steel can be finished steel material, or can be used as base material for welded pipe and sheet blank for laminated sheet. Main uses: as finished material, the flat steel can be used for making hoop iron, tools and mechanical parts, and used as house frame structural parts and staircases in construction.

[0003] The traditional hot rolling flat steel production process is single line rolling, that is, only one finished flat steel can be produced from one base material. Obviously, the existing flat steel rolling production efficiency is low. SUMMARY

[0004] The purpose of the present application is to provide a hot rolling flat steel slitting guide device to improve the hot rolling efficiency of flat steel.

[0005] To achieve the above purpose, the present application adopts the following technical solutions:

[0006] The downstream end of the hole cavity of the feeding guide nose is arranged with a slitting roller set composed of an upper slitting roller and a lower slitting roller. The roller cores of the upper slitting roller and the lower slitting roller are horizontal and provide plumb surfaces. The middle part of the upper slitting roller and the lower slitting roller in the length direction has an upper slitting roller slitting edge and a lower slitting roller slitting edge which are opposite to each other. The opposite positions of the upper slitting roller slitting edge and the lower slitting roller slitting edge are at the center symmetric positions of the long side of the hole cavity of the feeding guide nose.

[0007] The downstream side of the slitting roller set is arranged with a separation roller set composed of an upper separation roller and a lower separation roller. The roller cores of the upper separation roller and the lower separation roller are horizontal and provide plumb surfaces. The middle part of the upper separation roller has an upper roller first separation wall and an upper roller second separation wall which are arranged axially and spaced apart. The middle part of the lower separation roller has a lower roller first separation wall and a lower roller second separation wall which are arranged axially and spaced apart. The upper roller first separation wall is opposite to the lower roller first separation wall, and the upper roller second separation wall is opposite to the lower roller second separation wall.

[0008] The opposite positions of the upper slitting roller slitting edge and the lower slitting roller slitting edge are between the opposite positions of the upper roller first separation wall and the lower roller first separation wall and the opposite positions of the upper roller second separation wall and the lower roller second separation wall.

[0009] The downstream side of the separation roller set is connected with a first guide hole and a second guide hole. The cross section of the first guide hole and the second guide hole is flat square, and the hole length direction of the first guide hole and the second guide hole is in an eight-character shape with the upstream adjacent to the downstream.

[0010] The present application adopts the slitting roller group and the separation roller group arranged in sequence from upstream to downstream to firstly slit the flat steel blank A, then implement separation guide, transport the halved flat steel blank to the downstream rolling mill to implement subsequent rolling, realize that one blank can produce two finished flat steels, thereby greatly improve the yield and have rich economic benefits. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is the front view of the present application;

[0012] Figure 2 is the A-A sectional view in Figure 1 ;

[0013] Figure 3 , 4 respectively are the plan view and the left view of Figure 1 ;

[0014] Figure 5 is the schematic diagram of the three-dimensional structure after hiding the box body;

[0015] Figure 6 is the three-dimensional view in Figure 5 hiding the upper half part;

[0016] Figure 7 , 8 respectively are the flat steel rolling process flow chart in the present application and the prior art. DETAILED DESCRIPTION

[0017] Combining 1-6, a hot-rolled flat steel slitting guide device, the upstream end of the box body 10 has a feeding guide nose 20 receiving the flat steel blank A to be rolled, the hole cavity 21 of the feeding guide nose 20 is a flat square in section;

[0018] The hole cavity downstream end of the feeding guide nose 20 is arranged with a slitting roller group composed of an upper slitting roller 30 and a lower slitting roller 40, the roller cores of the upper slitting roller 30 and the lower slitting roller 40 are horizontal and provide plumb surfaces, the middle part of the upper slitting roller 30 and the lower slitting roller 40 in the length direction has an upper slitting roller slitting edge 31 and a lower slitting roller slitting edge 41 which are opposite to the blade edges, and the opposite positions of the upper slitting roller slitting edge 31 and the lower slitting roller slitting edge 41 are at the center symmetric positions of the long side of the hole cavity of the feeding guide nose 20;

[0019] The downstream side of the slitting roller group is arranged with a separation roller group composed of an upper separation roller 50 and a lower separation roller 60, the roller cores of the upper separation roller 50 and the lower separation roller 60 are horizontal and provide plumb surfaces, the middle part of the upper separation roller 50 has an upper roller first separation wall 51 and an upper roller second separation wall 52 which are arranged axially and spaced apart, the middle part of the lower separation roller 60 has a lower roller first separation wall 61 and a lower roller second separation wall 62 which are arranged axially and spaced apart, the upper roller first separation wall 51 is opposite to the lower roller first separation wall 61, and the upper roller second separation wall 52 is opposite to the lower roller second separation wall 62;

[0020] The opposite positions of the upper cutting roller cutting edge 31 and the lower cutting roller cutting edge 41 are between the opposite positions of the upper roller first separation wall 51 and the lower roller first separation wall 61 and the opposite positions of the upper roller second separation wall 52 and the lower roller second separation wall 62;

[0021] The downstream side of the separation roller group is connected with the first guide hole 70 and the second guide hole 80, the cross section of the first guide hole 70 and the second guide hole 80 is a flat square, and the hole length direction of the first guide hole 70 and the second guide hole 80 is an eight-shaped figure with the upstream adjacent to the downstream.

[0022] Combined Figure 5 , 6 , 7, the flat steel blank A rolled by the upstream rolling mill is guided out from the discharge side of the roller, the upstream end of the box 10 in the application has a feeding guide nose 20 that receives the flat steel blank A to be rolled, that is, a material guiding plate, the duckbill shape of the feeding guide nose 20 can exactly ensure that it reaches the angular discharge position of the roller, the flat steel blank A smoothly enters the hole cavity with a flat square cross section of the feeding guide nose 20, and the flat steel blank A immediately reaches the position of the cutting roller group, the flat steel blank A with high speed runs on the middle division notch A1 preliminarily rolled by the upstream rolling mill, like Figure 7 , the third process in the application, the upper cutting roller cutting edge 31 and the lower cutting roller cutting edge 41 opposite to each other are aligned with the middle division notch A1 on the flat steel blank A, so that the confrontation roller cutting of the upper cutting roller cutting edge 31 and the lower cutting roller cutting edge 41 divides the flat steel blank A into two, like Figure 7 , the fourth process in the application, the two flat steel blanks a divided into two quickly reach the separation roller group, the upper roller first separation wall 51 and the lower roller first separation wall 61 and the upper roller second separation wall 52 and the lower roller second separation wall 62 opposite to each other guide the two flat steel blanks a to enter the respective first guide hole 70 and the second guide hole 80, and under the guidance of the eight-shaped separation arrangement of the first guide hole 70 and the second guide hole 80, the two flat steel blanks a run to the downstream rolling mill at high speed.

[0023] In the application, the flat steel blank a after being cut by the cutting roller group is immediately separated and guided by the separation roller group and enters the first guide hole 70 and the second guide hole 80, avoiding the phenomenon of stacking steel caused by the further highlighting of softness of the flat steel blank a running at high speed after separation.

[0024] The two sides of the upper cutting roller cutting edge 31 of the upper cutting roller 30 are shallow groove-shaped grooves, and the roller surface shapes of the upper cutting roller 30 and the lower cutting roller 40 are the same. The left and right two shallow grooves are bounded by the upper cutting roller cutting edge 31, and because the roller surface shapes of the upper cutting roller 30 and the lower cutting roller 40 are the same, the two flat steel blanks a cut apart are still constrained in the axial direction, that is, the position of the outer side edge of the flat steel blank a running at high speed is still constrained and cannot arbitrarily deviate outward in the axial direction, but can only be guided downstream.

[0025] There is an upper roller annular groove 53 along the circumference of the upper roller between the upper roller first separation wall 51 and the upper roller second separation wall 52, and there is a lower roller annular groove 63 along the circumference of the lower roller between the lower roller first separation wall 61 and the lower roller second separation wall 62, and the upper cutting roller cutting edge 31 and the lower cutting roller cutting edge 41 are respectively close to the upper roller annular groove 53 and the lower roller annular groove 63. Due to the upper roller annular groove 53 along the circumference of the upper roller of the upper separation roller 50, and the lower roller annular groove 63 provided on the lower separation roller 60, the axial spacing between the upper roller first separation wall 51 and the upper roller second separation wall 52 is ensured, and the axial spacing between the lower roller first separation wall 61 and the lower roller second separation wall 62 is also ensured, and the upper roller annular groove 53 and the lower roller annular groove 63 are provided in the axial area between the two, so that the upper cutting roller cutting edge 31 of the upper cutting roller 30 is close to the upper roller annular groove 53, and the lower cutting roller cutting edge 41 is close to the lower roller annular groove 63, which maximally reduces the free section stroke of the flat steel blank a during high-speed running, and eliminates the phenomenon of steel stacking of the flat steel blank a in the unconstrained running state.

[0026] In order to ensure the blade spacing when the upper cutting roller cutting edge 31 and the lower cutting roller cutting edge 41 are aligned, and the spacing between the upper roller first separation wall 51 and the lower roller first separation wall 61, the following scheme is adopted: the upper cutting roller 30 and the lower cutting roller 40 are supported by bearings and are hinged on the upper cutting roller shaft 90 and the lower cutting roller shaft 100, the upper separation roller 50 and the lower separation roller 60 are supported by bearings and are hinged on the upper separation roller shaft 110 and the lower separation roller shaft 120, the end shafts at both ends of the upper cutting roller shaft 90, the lower cutting roller 100, the upper separation roller shaft 110 and the lower separation roller shaft 120 are eccentrically arranged with the middle shaft body supporting the upper cutting roller 30, the lower cutting roller 40, the upper separation roller 50 and the lower separation roller 60, and the eccentric adjusting mechanism is arranged between the upper cutting roller shaft 90, the lower cutting roller 100, the upper separation roller shaft 110 and the lower separation roller shaft 120 and the box body 10. By rotating the shaft end of the upper cutting roller shaft 90, the lower cutting roller shaft 100, the upper separation roller shaft 110 and the lower separation roller shaft 120, the position of the roller core of the upper cutting roller 30, the lower cutting roller 40, the upper separation roller 50 and the lower separation roller 60 will be appropriately displaced in the up, down, front and rear directions, and when the position is adjusted appropriately, the position of the turntable 12 at the end of the roller shaft will be locked by the locking bolt 11 in the eccentric adjusting mechanism. When the upper cutting roller 30 and the lower cutting roller 40, and the upper separation roller 50 and the lower separation roller 60 need to be adjusted due to wear after being used for a period of time, the position of the turntable 12 at the end of the roller shaft can be adjusted by rotating it.

Claims

1. A hot rolled flat steel slitting guide apparatus, characterized by: The upstream end of the box body (10) has a feeding guide nose (20) for receiving the flat billet A to be rolled, and the hole cavity (21) of the feeding guide nose (20) is in the shape of a flat square; The hole cavity downstream end of the feeding guide nose (20) is provided with a slitting roller set composed of an upper slitting roller (30) and a lower slitting roller (40), the roller cores of the upper slitting roller (30) and the lower slitting roller (40) are horizontal and provided with plumb surfaces, the middle part of the upper slitting roller (30) and the lower slitting roller (40) in the length direction of the roller is provided with an upper slitting roller slitting edge (31) and a lower slitting roller slitting edge (41) which are opposite to each other, and the opposite positions of the upper slitting roller slitting edge (31) and the lower slitting roller slitting edge (41) are at the center symmetric positions of the long sides of the hole cavity of the feeding guide nose (20). The downstream side of the slitting roller set is provided with a separation roller set composed of an upper separation roller (50) and a lower separation roller (60), the roller cores of the upper separation roller (50) and the lower separation roller (60) are horizontal and provided with plumb surfaces, the middle part of the upper separation roller (50) is provided with an upper roller first separation wall (51) and an upper roller second separation wall (52) which are arranged axially and spaced apart, the middle part of the lower separation roller (60) is provided with a lower roller first separation wall (61) and a lower roller second separation wall (62) which are arranged axially and spaced apart, the upper roller first separation wall (51) is opposite to the lower roller first separation wall (61), and the upper roller second separation wall (52) is opposite to the lower roller second separation wall (62). The opposite positions of the upper slitting roller slitting edge (31) and the lower slitting roller slitting edge (41) are between the opposite positions of the upper roller first separation wall (51) and the lower roller first separation wall (61) and the opposite positions of the upper roller second separation wall (52) and the lower roller second separation wall (62). The downstream side of the separation roller set is connected with a first guide hole (70) and a second guide hole (80), the cross sections of the first guide hole (70) and the second guide hole (80) are in the shape of a flat square, and the hole length directions of the first guide hole (70) and the second guide hole (80) are in the shape of an eight character with the upstream side close to the downstream side.

2. The hot strip slitting guide apparatus of claim 1 wherein: The two sides of the upper slitting roller slitting edge (31) of the upper slitting roller (30) are in the shape of a shallow groove, and the roller surfaces of the upper slitting roller (30) and the lower slitting roller (40) are the same.

3. The hot strip slitting guide apparatus of claim 1 wherein: There is an upper roller annular groove (53) along the circumferential direction of the roller body between the upper roller first separation wall (51) and the upper roller second separation wall (52), and there is a lower roller annular groove (63) along the circumferential direction of the roller body between the lower roller first separation wall (61) and the lower roller second separation wall (62), and the upper slitting roller slitting edge (31) and the lower slitting roller slitting edge (41) are close to the upper roller annular groove (53) and the lower roller annular groove (63) respectively.

4. The hot strip slitting guide apparatus of claim 1 wherein: The upper cutting roller (30) and the lower cutting roller (40) are supported by bearing hinges on the upper cutting roller shaft (90) and the lower cutting roller shaft (100), the upper separating roller (50) and the lower separating roller (60) are supported by bearing hinges on the upper separating roller shaft (110) and the lower separating roller shaft (120), the end shafts at the two ends of the upper cutting roller shaft (90), the lower cutting roller (100), the upper separating roller shaft (110) and the lower separating roller shaft (120) are arranged eccentrically to the middle shaft bodies supporting the upper cutting roller (30), the lower cutting roller (40), the upper separating roller (50) and the lower separating roller (60), and eccentric adjusting mechanisms are arranged between the upper cutting roller shaft (90), the lower cutting roller (100), the upper separating roller shaft (110), the lower separating roller shaft (120) and the box body (10).

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