Pre-finish rolling combined type rising roll of high-speed wire rod rolling mill

Abstract

The utility model relates to the technical field of combined type loop-rising rollers, in particular to a high-speed wire rod rolling mill pre-finish rolling combined type loop-rising roller which comprises a combined mechanism and a rack, the combined mechanism comprises a combined type loop-rising roller and a connecting key, the combined type loop-rising roller is composed of a loop-rising roller body, an inner sleeve and an outer sleeve, the inner sleeve is connected to the loop-rising roller body in a sleeving mode, and the outer sleeve is connected to the inner sleeve in a sleeving mode. The inner sleeve is sleeved with an outer sleeve, a key groove is formed in the outer sleeve, a connecting key is inserted into the key groove, the rack comprises side plates, sliding grooves, supporting feet and a connecting plate, and the sliding grooves are formed in the ends, close to each other, of the side plates of the rack. Through the arrangement of the combined loop rising roller, accidents caused by unreasonable design of an inlet guide in a pre-finish rolling area and influences caused by the accidents can be effectively reduced, the stability of the production process is guaranteed, and therefore the purposes of improving the production operation rate and reducing the production cost are achieved; and the tightness fit between the two parts is better.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of combined sleeve roll technology, in particular to a combined sleeve roll for pre-precision rolling of a high-speed wire rod mill. BACKGROUND

[0002] The high-speed wire rod mill production line is a main machine type currently mainly used for wire rod production in China. The main production process flow is blank loading, heating, rough rolling, medium rolling, pre-precision rolling, precision rolling, water cooling, wire laying, Stelmor air cooling line, collecting, P / F line, trimming, packaging, weighing, unloading and warehousing. The main function of the pre-precision rolling unit is to preliminarily form the incoming material of the rough and medium rolling mill and provide the blank with a qualified shape for the precision rolling unit. Therefore, the rolling force of each rolling mill of the unit is in a normal state under general design, but when the external conditions change, such as uneven temperature of the incoming rolling piece, large elbow of the incoming rolling piece, incorrect rolling line of the pre-precision rolling unit, uneven wear of the pre-precision rolling ring and the like, the shape and size control of the rolling piece is difficult. Through retrieval, a sleeve roll structure is disclosed in Chinese Patent No. CN214919253U. The sleeve roll structure comprises a sleeve roll and a sleeve roll bearing, and the sleeve roll bearing is provided with a bearing sleeve. A roll sleeve is arranged on the outer wall of the bearing sleeve in a sleeved manner, and the bearing sleeve and the roll sleeve are detachably connected.

[0003] For the related technology in the above, the inventor finds that the following defects exist: the sleeve roll wears fast, especially when the cooling water is insufficient, the sleeve volume is set unreasonably, the sleeve roll and the rolling piece are in pressure contact and the like, the service life of the sleeve roll is short, and even the sleeve roll bearing is burned out to cause steel stacking or scratch the rolling piece.

[0004] Therefore, in view of the above problems, the applicant provides a combined sleeve roll for pre-precision rolling of a high-speed wire rod mill. Content of the utility model

[0005] In order to solve the problems mentioned in the background art, the application provides a combined sleeve roll for pre-precision rolling of a high-speed wire rod mill.

[0006] The application provides a combined sleeve roll for pre-precision rolling of a high-speed wire rod mill, which adopts the following technical scheme:

[0007] The combined sleeve roll for pre-precision rolling of a high-speed wire rod mill comprises a combined mechanism and a rack, the combined mechanism comprises a combined sleeve roll and a connecting key, the combined sleeve roll is composed of a sleeve roll body, an inner sleeve and an outer sleeve, the inner sleeve is sleeved on the sleeve roll body, the outer sleeve is sleeved on the inner sleeve, a key groove is formed in the outer sleeve, and the connecting key is inserted into the key groove.

[0008] Optionally, the rack comprises side plates, sliding grooves, supporting legs and connecting plates, the side plates of the rack are provided with sliding grooves at one end close to each other, the bottom of the rack is provided with supporting legs, and the connecting plates are fixedly connected between the side plates of the rack, and the supporting legs are used for positioning the side plates and the connecting plates.

[0009] Optionally, the supporting legs are slidably connected with sliding blocks, the sliding blocks are fixedly connected with the outer rings of bearings, and the inner rings of the bearings are rotatably connected to the two ends of the combined sleeve roll, and the inner rings of the bearings can rotate synchronously with the two ends of the combined sleeve roll in the sliding blocks.

[0010] Optionally, the top surface of the connecting plate is provided with a gas cylinder, the output end of the gas cylinder is fixedly connected with a supporting frame, the supporting frame is rotatably connected to the two ends of the combined sleeve roll, the gas cylinder is connected with a power supply, the gas cylinder drives the combined sleeve roll to be lifted up, the sliding blocks slide up and down in the sliding grooves, and the gas cylinder is mainly used for lifting the height of the rolled piece.

[0011] Optionally, the side plates of the rack are rotatably connected with a first positioning roller, a second positioning roller, an inlet supporting roller, an inlet pressing roller, an outlet pressing roller and an outlet supporting roller, respectively, the circumferential outer walls of the first positioning roller and the second positioning roller are in contact with the top surface and the bottom surface of the rolled piece, respectively, the inlet pressing roller and the outlet pressing roller are in contact with the top surface of the rolled piece, the circumferential outer walls of the inlet supporting roller and the outlet supporting roller are in contact with the bottom surface of the rolled piece, the first positioning roller, the second positioning roller, the inlet supporting roller, the inlet pressing roller, the outlet pressing roller and the outlet supporting roller are combined into a roller assembly, two groups of the first positioning roller and the second positioning roller are arranged on the rack, and another group is not marked in the figure and is located on one side of the outlet supporting roller, the two groups of the first positioning roller and the second positioning roller are used for positioning the rolled piece, and the inlet supporting roller, the inlet pressing roller, the outlet pressing roller and the outlet supporting roller are used for guiding and positioning the rolled piece.

[0012] Optionally, the combined sleeve roll, the circumferential outer wall of the combined sleeve roll is in contact with the bottom surface of the rolled piece, the width of the sleeve is determined according to the width of the rolled piece produced by the first rack of the pre-precision rolling, the diameter of the sleeve is determined according to the width of the sleeve according to the principle of times, the diameter of the inner hole of the combined inner sleeve is determined according to the width of the sleeve according to the principle of times, since the internal rolled piece of the pre-precision rolling has two kinds of circular and elliptical, the combined sleeve roll is designed as a single-curvature elliptical hole, the commonality of the combined sleeve roll is improved, the combined inner sleeve and the sleeve adopt a hot interference fit, the inner sleeve and the sleeve are designed with a key groove and a connecting key, the torque transmission of the key groove and the connecting key is ensured, the inner diameters of the inner sleeve and the sleeve are interference fit, the interference degree is generally selected as 0.5mm or 1.0mm, the connecting key between the inner sleeve and the sleeve is designed as a square key, the size of the key groove is 15mmX15mmX50mm, the inner sleeve can be designed as 45# cast steel to ensure that a larger impact load can be borne.

[0013] Optionally, the support frame is in a U-shaped structure in horizontal direction orthographic projection.

[0014] To sum up, the present application includes the following beneficial technical effects:

[0015] 1. The utility model discloses a combined type sleeve roll, which can effectively reduce accidents and influences caused by unreasonable inlet guide design in the pre-rolling area, ensure the stability of production process, and achieve the purposes of improving production operation rate and reducing production cost.

[0016] 2. The utility model discloses a combined type sleeve roll, which can effectively reduce accidents and influences caused by unreasonable inlet guide design in the pre-rolling area, ensure the stability of production process, and achieve the purposes of improving production operation rate and reducing production cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is one of the overall structure schematic diagram of the embodiment of the present application;

[0018] Figure 2 is the second overall structure schematic diagram of the embodiment of the present application;

[0019] Figure 3 is the roller assembly structure schematic diagram of the embodiment of the present application;

[0020] Figure 4 is the split structure schematic diagram of the combined mechanism of the embodiment of the present application;

[0021] Figure 5 is the split structure schematic diagram of the combined type sleeve roll and connecting key of the embodiment of the present application;

[0022] Figure 6 is the split structure schematic diagram of the combined type sleeve roll and connecting key of the embodiment of the present application.

[0023] The utility model discloses a combined type sleeve roll, which can effectively reduce accidents and influences caused by unreasonable inlet guide design in the pre-rolling area, ensure the stability of production process, and achieve the purposes of improving production operation rate and reducing production cost. DETAILED DESCRIPTION

[0024] The following will be described in detail in combination with the drawings. Figures 1-6 The present application will be further described in detail.

[0025] The embodiment of the present application discloses a combined type sleeve roll for high-speed wire rod mill pre-rolling.

[0026] As Figures 1-6As shown, a high-speed wire rod mill pre-precision rolling combined loop-up roller, including a combination mechanism and a rack 1, the combination mechanism includes a combined loop-up roller 7 and a connecting key 8, the combined loop-up roller 7 is composed of a loop-up roller body 70, an inner sleeve 71 and an outer sleeve 72, the inner sleeve 71 is sleeved on the loop-up roller body 70, the outer sleeve 72 is sleeved on the inner sleeve 71, the outer sleeve 72 is provided with a key groove 720, and the connecting key 8 is inserted into the key groove 720.

[0027] Please refer to Figure 1 and Figure 2 , the rack 1 includes side plates, sliding grooves 100, supporting legs 101 and connecting plates 102, the side plates of the rack 1 are provided with sliding grooves 100 at one end close to each other, the bottom of the rack 1 is provided with a plurality of supporting legs 101, and the connecting plates 102 are fixedly connected between the side plates of the rack 1, and the plurality of supporting legs 101 serve to position the side plates and the connecting plates 102 of the rack 1.

[0028] Please refer to Figure 1 , the supporting legs 101 are slidingly connected with sliding blocks 3, the sliding blocks 3 are fixedly connected with the outer rings of bearings 4, the inner rings of the bearings 4 are rotatably connected to both ends of the combined loop-up roller 7, and the inner rings of the bearings 4 can synchronously rotate with both ends of the combined loop-up roller 7 in the sliding blocks 3.

[0029] Please refer to Figure 2 , the top surface of the connecting plate 102 is provided with an air cylinder 6, the output end of the air cylinder 6 is fixedly connected with a supporting frame 5, the supporting frame 5 is rotatably connected to both ends of the combined loop-up roller 7, the air cylinder 6 is connected with a power source, the air cylinder 6 drives the combined loop-up roller 7 to be lifted up, and at the same time, the sliding blocks 3 slide up and down in the sliding grooves 100, and the air cylinder 6 is mainly used to lift the height of the workpiece to be rolled.

[0030] Please refer to Figure 2 and Figure 3 , the side plates of the rack 1 are rotatably connected with a positioning roller one 20, a positioning roller two 21, an inlet supporting roller 22, an inlet pressure roller 23, an outlet pressure roller 24 and an outlet supporting roller 25, respectively, the circumferential outer walls of the positioning roller one 20 and the positioning roller two 21 are in contact with the top surface and the bottom surface of the workpiece to be rolled, respectively, the inlet pressure roller 23 and the outlet pressure roller 24 are in contact with the top surface of the workpiece to be rolled, the circumferential outer walls of the inlet supporting roller 22 and the outlet supporting roller 25 are in contact with the bottom surface of the workpiece to be rolled, the positioning roller one 20, the positioning roller two 21, the inlet supporting roller 22, the inlet pressure roller 23, the outlet pressure roller 24 and the outlet supporting roller 25 are combined into a roller assembly 2, two sets of the positioning roller one 20 and the positioning roller two 21 are arranged on the rack 1, and the other set is not marked in the figure and is located on one side of the outlet supporting roller 25, the two sets of the positioning roller one 20 and the positioning roller two 21 serve to position the workpiece to be rolled, and the inlet supporting roller 22, the inlet pressure roller 23, the outlet pressure roller 24 and the outlet supporting roller 25 serve to guide and position the workpiece to be rolled.

[0031] Please refer toFigure 3 The outer wall of the combined sleeve roll 7 contacts the bottom surface of the workpiece to be rolled. The horizontal projection of the support frame 5 is in a U-shaped structure. The width of the outer sleeve 72 is determined according to the width of the workpiece produced by the first frame of the pre-finishing mill. The diameter of the outer sleeve 72 is determined according to the width of the outer sleeve 72 according to the 5 times principle. The inner hole diameter of the combined inner sleeve 71 is determined according to the width of the outer sleeve 72 according to the 2 times principle. Since the internal workpiece of the pre-finishing mill has two types of circular and elliptical, the combined sleeve roll 7 is designed as a single curvature elliptical hole, which improves the commonality of the combined sleeve roll 7. The combined inner sleeve 71 and the outer sleeve 72 are hot mounted with interference fit. The inner sleeve 71 and the outer sleeve 72 are designed with a key groove 720 and a connecting key 8 to ensure the torque transmission of the key groove 720 and the connecting key 8. The inner diameter of the inner sleeve 71 and the outer sleeve 72 is interference fit, and the interference degree is generally selected as 0.5mm-1.0mm. The connecting key 8 between the inner sleeve 71 and the outer sleeve 72 is designed as a square key, and the size of the key groove 720 is 15mmX15mmX50mm. The inner sleeve 71 can be designed as 45# cast steel to withstand larger impact load.

[0032] The implementation principle of the combined sleeve roll of the pre-finishing mill of the high-speed wire rod mill is as follows:

[0033] The cylinder 6 drives the support frame 5 and the combined sleeve roll 7 to contact the workpiece. At the same time, the bearing 4 slides up and down in the sliding groove 100. The interference fit between the inner sleeve 71 and the outer sleeve 72 can effectively reduce the accidents caused by unreasonable design of the inlet guide in the pre-finishing mill area and the influence of the accidents, so as to ensure the stability of the production process and achieve the purpose of improving the production operation rate and reducing the production cost.

[0034] The connecting key 8 is inserted into the key groove 720 to connect the inner sleeve 71 and the outer sleeve 72, so that the tightness between the two is more matched.

[0035] The above are the preferred embodiments of the present application, but do not limit the protection scope of the present application. Therefore, any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A prefinishing combined loop roll for high speed wire rod mill characterized in that: The utility model provides a combined mechanism and frame (1), the combined mechanism includes combined sleeve roll (7) and connecting key (8), the combined sleeve roll (7) is composed of sleeve roll body (70), inner sleeve (71) and outer sleeve (72), the inner sleeve (71) is sleeved on sleeve roll body (70), the outer sleeve (72) is sleeved on inner sleeve (71), the keyway (720) is seted up on the outer sleeve (72), and the connecting key (8) is inserted into the keyway (720).

2. A combined pre-roughing roll set for a high speed wire rod mill according to claim 1, characterized in that: The frame (1) includes side plates, sliding grooves (100), legs (101) and connecting plates (102), the sliding grooves (100) are formed in the ends of the side plates of the frame (1) that are close to each other, the legs (101) are installed at the bottom of the frame (1), and the connecting plates (102) are fixedly connected between the side plates of the frame (1).

3. A combined entry shoe of a high speed wire rod mill pre-finishing stand according to claim 2, characterized in that: The sliding blocks (3) are slidingly connected in the legs (101), the outer rings of the bearings (4) are fixedly connected to the sliding blocks (3), and the inner rings of the bearings (4) are rotatably connected to the two ends of the combined sleeve roll (7).

4. A combined entry shoe of a high speed wire rod mill pre-finishing stand according to claim 3, characterized in that: The air cylinders (6) are installed on the top surfaces of the connecting plates (102), the support frames (5) are fixedly connected to the output ends of the air cylinders (6), the support frames (5) are rotatably connected to the two ends of the combined sleeve roll (7), and the air cylinders (6) are connected with power supplies.

5. A combined pre-roughing roll set for a high speed wire rod mill according to claim 1, characterized in that: The positioning roller one (20), the positioning roller two (21), the inlet support roller (22), the inlet compression roller (23), the outlet compression roller (24) and the outlet support roller (25) are rotatably connected to the side plates of the frame (1), respectively, the circumferential outer walls of the positioning roller one (20) and the positioning roller two (21) are in contact with the top surface and the bottom surface of the workpiece to be rolled, respectively, the inlet compression roller (23) and the outlet compression roller (24) are in contact with the top surface of the workpiece to be rolled, the circumferential outer walls of the inlet support roller (22) and the outlet support roller (25) are in contact with the bottom surface of the workpiece to be rolled, and the positioning roller one (20), the positioning roller two (21), the inlet support roller (22), the inlet compression roller (23), the outlet compression roller (24) and the outlet support roller (25) are combined into the roller assembly (2).

6. A combined entry shoe of high speed wire rod mill pre-finishing stand as claimed in claim 1 wherein: The combined sleeve roll (7) is in contact with the bottom surface of the workpiece to be rolled.

7. A pre-precoding combined loop for high speed wire rod mill as claimed in claim 4 wherein: The support frame (5) is in a U-shaped structure in the horizontal direction.

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