Silicon steel cold rolling equipment with uniform pressure

Abstract

The invention discloses uniform-pressure silicon steel cold rolling equipment, and relates to the field of silicon steel cold rolling, the uniform-pressure silicon steel cold rolling equipment comprises a linearly through rack, two working rollers are distributed in the rack in parallel up and down, a gap for conducting silicon steel is formed between the two working rollers, two supporting rollers are symmetrically arranged on the far sides of the two working rollers, and the two supporting rollers are horizontally distributed at intervals; two parallel contact lines are arranged between the two supporting rollers and the working roller, symmetrical abutting force is applied to the working roller through the positions of the two contact lines, so that the working roller is positioned, it is guaranteed that the working roller has high rigidity, and the service life of the working roller is prolonged. And position deviation or self-deformation of the working roll is avoided, uniform pressure of the working roll is ensured, and the cold rolling quality of silicon steel is improved.

Description

Technical Field

[0001] The present invention relates to the field of cold rolling of silicon steel, and particularly to a cold rolling device for silicon steel with uniform pressure. Background Art

[0002] The cold rolling process of silicon steel is to press the conveyed steel strip by two working rolls to roll the steel strip into a set thickness. To ensure the rolling fineness of the silicon steel strip, the diameter of the working roll used is small to maintain the elastic flattening accuracy of the steel strip. However, the working roll with a small diameter has the problem of low stiffness. Therefore, backup rolls need to be provided to abut against the working roll to improve the stiffness of the working roll.

[0003] The cold rolling quality of silicon steel is directly related to the uniform pressure effect applied by the working roll. As shown in the figure, the existing working roll and backup roll are arranged in a facing position, and the working roll and the backup roll are in linear contact, and the pressure direction is perpendicular to the conduction direction of the silicon steel strip. However, the direction of the force on the working roll during the rolling process of the steel strip is inclined to the pressure direction of the backup roll. The working roll is prone to position deviation or self-deformation in a non-equilibrium force working environment for a long time, resulting in uneven pressure on the rolling of the silicon steel strip and reducing the cold rolling quality. Summary of the Invention

[0004] In order to make up for the deficiencies of the existing technology problems, the purpose of the present invention is to provide a cold rolling device for silicon steel with uniform pressure, which is used to solve the problem that the traditional backup roll linearly extrudes and contacts the working roll, and the normal pressure applied by the backup roll to the working roll is inconsistent with the force direction of the working roll rolling silicon steel, resulting in the working roll being prone to position deviation or self-deformation.

[0005] In order to solve the existing technology problems, the technical solution of the present invention is as follows: A cold rolling device for silicon steel with uniform pressure, comprising: a straight-through frame, two working rolls are horizontally and parallelly distributed inside the frame, a gap for conducting silicon steel is formed between the two working rolls, and two backup rolls are symmetrically arranged on the far sides of the two working rolls, the two backup rolls are horizontally and spaced apart, and the two backup rolls jointly abut against the working roll in the direction of the silicon steel conduction gap.

[0006] Preferably, the included angle r between the central connection line of the cross sections of the backup roll and the working roll and the vertical line is less than 55°, and the distance t between the two backup rolls is less than 2 / 3 of the diameter d of the working roll.

[0007] Preferably, the ends of the two horizontally arranged support rollers are horizontally slidably arranged through a transverse slider, the ends of the two working rollers are vertically slidably arranged through a vertical slider, an expansion spring is arranged between the vertical sliders, both sides of the frame are provided with scissor members, the hinge points of the scissor members are aligned with the middle positions of the two working rollers, sliding openings are formed in four branches of the scissor frame, the transverse slider has a cylindrical handle, and the cylindrical handle is correspondingly inserted into the sliding opening. A hydraulic cylinder is connected between two branches of the scissor frame, and the hydraulic cylinder drives the scissor frame to rotate, pushing the two support rollers in the horizontal position to perform an opening and closing movement for pushing and pressing the working rollers to vertically move to adjust the conduction gap of the silicon steel.

[0008] Preferably, horizontal sliding grooves extending horizontally and vertical sliding grooves extending vertically are formed on both sides of the frame, the transverse slider linearly slides in the horizontal sliding groove, the vertical slider linearly slides in the vertical sliding groove, the transverse slider includes a sliding seat, an activity groove is formed on the surface of the sliding seat, a base block is arranged in the activity groove, the end of the support roller is rotatably connected to the base block, and the base block abuts against the activity groove through a pressure sensor.

[0009] Preferably, racks are arranged at the upper and lower parts of the horizontal sliding groove, a sliding groove is formed on the surface of the sliding seat, a slider is horizontally elastically slidably arranged in the sliding groove through a spring, the cylindrical handle is connected to the slider, tooth blocks are symmetrically arranged at the upper and lower parts of the sliding seat, an inclined surface part is arranged at one end of the slider pointing to the tooth block, and the slider squeezes the tooth block through the inclined surface part so that the tooth block is clamped with the rack in an expanding manner to position the position of the sliding seat.

[0010] Preferably, the tooth blocks are symmetrically and vertically slidably arranged at the upper and lower parts of the sliding seat, springs are connected between the tooth blocks and the sliding seat so that the tooth blocks have a tendency to shrink into the interior of the sliding seat, and the contact parts of the tooth blocks and the inclined surface parts are in a matching inclined surface shape.

[0011] Preferably, the tooth blocks are symmetrically and rotatably arranged at the upper and lower parts of the sliding seat through torsion springs, and the edges of the tooth blocks contacting the inclined surface parts are arc-shaped.

[0012] Preferably, a stop block is slidably arranged in the sliding groove, a spring is arranged between the slider and the stop block, and a stud is rotatably inserted into the sliding groove from the side end of the sliding seat, and the stud threadedly penetrates through the stop block.

[0013] Preferably, one hydraulic cylinder is adopted, two ends of the hydraulic cylinder are respectively hinged to two branches of the scissor frame, fixed tooth plates are correspondingly arranged on the two branches of the scissor frame, and a gear is rotatably arranged on the surface of the frame, and the gear synchronously meshes with the two tooth plates.

[0014] Preferably, two hydraulic cylinders are adopted, and the two hydraulic cylinders are respectively connected to two branches of the scissor frame.

[0015] Compared with the prior art, the advantages of the present invention are as follows: 1. The present invention has two parallel contact lines between two support rolls and the working roll, and applies symmetrical resistance force to the working roll at the positions of the two contact lines, so that the working roll is positioned, ensuring that the working roll has high rigidity, avoiding position deviation or self-deformation of the working roll, and providing the working roll with uniform pressure, thereby improving the cold rolling quality of silicon steel.

[0016] 2. The present invention controls the opening and closing of the scissor frame to adjust the distance between the two support rollers, so that the distance between the two working rollers changes, and is used to conveniently adjust the cold rolling gap between the working rollers and silicon steel according to different cold rolling thickness requirements.

[0017] 3. The transverse slide of the present invention has a sliding body with a spring resistance and an expandable tooth block. The sliding body is pressurized by a scissor frame to compress the spring to reach a set pressure. The displacement of the sliding body resists the expansion of the tooth block and engages with the rack, which is used to lock the position of the transverse slide, maintain the rigidity of the support roller pressing on the working roller, and also share the load strength of the hydraulic cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the existing distribution of working rolls and support rolls.

[0019] Figure 2 It is one of the overall structural schematic diagrams of the present invention.

[0020] Figure 3 This is a schematic diagram of the distribution of working rolls and support rolls of the present invention.

[0021] Figure 4 It is a schematic diagram of the limiting structure of the end portions of the working roll and the support roll of the present invention.

[0022] Figure 5 This is the second schematic diagram of the overall structure of the present invention.

[0023] Figure 6 It is a schematic diagram of the distribution of the horizontal slide groove and the vertical slide groove of the present invention.

[0024] Figure 7 It is a schematic diagram of the positioning structure of the transverse slide member of the present invention.

[0025] Figure 8 This is one of the schematic diagrams of the structure of the transverse sliding member of the present invention.

[0026] Figure 9 This is the second schematic diagram of the structure of the transverse sliding member of the present invention.

[0027] Reference numerals: 1, working roll; 11, chamfered portion; 2, support roll; 21, frustum portion; 3, frame; 31, horizontal sliding groove; 32, vertical sliding groove; 4, horizontal sliding member; 41, sliding seat; 42, movable groove; 43, base block; 44, pressure sensor; 45, sliding groove; 46, sliding body; 47, stop block; 48, stud; 49, cylindrical handle; 410, toothed block; 411, inclined surface portion; 5, vertical slider; 6, scissor frame; 61, sliding opening; 62, connecting column; 7, hydraulic cylinder; 8, toothed plate; 81, gear; 9, rack. Detailed implementation manner

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0029] The cold rolling equipment for silicon steel is composed of a frame 3, roll members, an opening and closing distance adjusting assembly, and a spacing positioning assembly.

[0030] The frame 3 is a frame with straight through at both ends.

[0031] In the first embodiment, as Figure 3 、 Figure 5 shown, there are two groups of roll members. The two groups of roll members are symmetrically arranged up and down in the frame 3. Each group of roll members consists of one working roll 1 and two support rolls 2. The working rolls 1 of the two groups of roll members are horizontally parallel. A gap for conducting silicon steel is formed between the two working rolls 1. The two support rolls 2 of each group of roll members are located on the side of the working roll 1 far from the silicon steel conduction gap. The two support rolls 2 are horizontally parallel. The two support rolls 2 jointly abut against the working roll 1 in the direction of the silicon steel conduction gap. The cross-sectional diameter of the support roll 2 is larger than the cross-sectional diameter of the working roll 1. The included angle between the center line of the cross-section of the support roll 2 and the working roll 1 and the vertical line is r, and r < 55°. The two support rolls 2 are distributed with a gap, and the gap width is t. The diameter of the working roll 1 is d, and t < 2 / 3d.

[0032] There are two parallel contact lines between the two support rolls 2 and the working roll 1. Symmetrical abutting forces are applied to the working roll 1 at the positions of the two contact lines, so that the working roll 1 is positioned, ensuring that the working roll 1 has high rigidity and also preventing the working roll 1 from shifting in position or deforming itself.

[0033] As Figure 4 shown, the two end portions of the working roll 1 have chamfered portions 11, and the two end portions of the support roll 2 have frustum portions 21. The frustum portions 21 are adapted to abut against each other to apply axial position pressure and positioning to the working roll 1, preventing the axial position of the working roll 1 from shifting.

[0034] For a cold rolling production line with a fixed size of silicon steel, the two ends of the backup roll 2 and the work roll 1 can be directly rotatably connected to the side walls of the frame 3. For a cold rolling production line with a non-fixed size, it is necessary to adjust the cold rolling spacing between the two work rolls 1 through an opening and closing distance adjustment component. The specific operation is as follows: As Figure 5 , Figure 6 shown, horizontal cross chutes 31 are opened on both sides of the frame 3, and vertical chutes 32 are opened vertically. The cross chutes 31 and the vertical chutes 32 are distributed in an I-shape. Two sets of horizontally sliding cross-sliding members 4 are arranged in the cross chutes 31. The backup roll 2 is rotatably connected to the cross-sliding members 4. Two vertical sliders 5 slide symmetrically and vertically in the vertical chutes 32. The end of the work roll 1 is rotatably connected to the vertical slider 5, and a tension spring is connected between the two vertical sliders 5.

[0035] Two scissors members are symmetrically arranged on both sides of the frame 3. The hinge points of the scissors members are aligned with the middle positions of the two work rolls 1. Four branches of the scissors frame 6 are all provided with sliding openings 61. The cross-sliding member 4 has a cylindrical handle 49, and the cylindrical handle 49 is correspondingly inserted into the sliding opening 61. A connecting column 62 is connected between the tops of the scissors frames 6 on both sides. Two hydraulic cylinders 7 are symmetrically and rotatably installed on the top of the frame 3, and the telescopic ends of the hydraulic cylinders 7 are respectively hinged to the connecting column 62.

[0036] Open the two hydraulic cylinders 7 to perform synchronous telescopic movement, which is used to push the connecting column 62 to drive the scissors frame 6 to perform an opening and closing movement. By sliding and abutting the cylindrical handle 49 through the sliding opening 61, the two horizontally arranged cross-sliding members 4 synchronously open and close and slide in the cross chutes 31, so that the distance between the two backup rolls 2 changes. The opening and closing distances of the upper and lower two sets of backup rolls 2 are kept the same. When the distance between the two backup rolls 2 expands, the work roll 1 gradually approaches the middle position between the two backup rolls 2, and the rolling gap between the two work rolls 1 expands. When the distance between the two backup rolls 2 shrinks, the work roll 1 gradually moves away from the middle position between the two backup rolls 2, and the rolling gap between the two work rolls 1 shrinks.

[0037] In order to reduce the long-term working load of the hydraulic cylinder 7, it is necessary to automatically lock the opening and closing positions of the cross-sliding member 4 through a positioning component. The specific operation is as follows: As Figure 7 shown, the cross-sliding member 4 includes a sliding seat 41, which is slidably adapted to the cross chute 31. An activity groove 42 is opened on the surface of the sliding seat 41. A base block 43 is horizontally slidably arranged in the activity groove 42. The end of the backup roll 2 is rotatably connected to the base block 43. A pressure sensor 44 is arranged on the side of the base block 43 away from the work roll 1, and the base block 43 abuts against the activity groove 42 through the pressure sensor 44.

[0038] As Figure 7 , Figure 8As shown, a sliding groove 45 is provided on the surface of the slide 41, a sliding body 46 is arranged in the sliding groove 45 for horizontal sliding, a spring is arranged between the sliding body 46 and the sliding groove 45, and is used for the sliding body 46 to exert an elastic force in the direction away from the working roll 1, a cylindrical handle 49 is connected to the sliding body 46, and tooth blocks 410 are symmetrically arranged for vertical sliding at the upper and lower parts of the slide 41, a spring is connected between the tooth block 410 and the slide 41, so that the tooth block 410 has a tendency to shrink inside the slide 41, an end of the sliding body 46 pointing to the tooth block 410 has an inclined portion 411, and the tooth block 410 has an inclined surface parallel to the inclined portion 411, and racks 9 are arranged on the upper and lower parts of the horizontal slide groove 31.

[0039] The scissors frame 6 pushes the cylindrical handle 49 to drive the cross slide 4 to move together as a whole. As the resistance force of the working roller 1 on the support roller 2 continues to increase, the slide 46 slides in the sliding groove 45 and gradually compresses the spring. The elastic force of the spring is the pressure applied by the support roller 2 to the working roller 1. When the pressure reaches a certain level, the slide 46 moves to compress the spring so that the inclined portion 411 of the slide 46 squeezes the inclined surface of the tooth block 410, so that the tooth block 410 expands and moves to engage with the rack 9, locking the position of the slide 41, maintaining the rigidity of the support roller 2 exerting pressure on the working roller 1, and also sharing the load strength of the hydraulic cylinder 7.

[0040] The force of the compression spring of the slider 46 against the expansion of the tooth block 410 is the maximum pressure applied by the support roller 2 to the working roller 1. The maximum pressure of the support roller 2 on the working roller 1 needs to be adjusted according to the pressure requirement of the silicon steel cold rolling. The specific operation is as follows; A stopper 47 is linearly slidably arranged in the sliding groove 45, a spring is arranged between the sliding body 46 and the stopper 47, a stud 48 is rotated from the side end of the sliding seat 41 and inserted into the sliding groove 45, and the stud 48 passes through the sliding body 46 and is threadedly connected with the stopper 47; The end of the stud 48 has a hexagonal end. The stud 48 is rotated with a wrench to adjust the position of the block 47 in the sliding groove 45. When the position of the block 47 is adjusted in the direction of the sliding body 46, the amplitude of the compression spring increases when the sliding body 46 resists the expansion of the tooth block 410, and the maximum pressure value that the support roller 2 can apply to the working roller 1 increases. Conversely, when the position of the block 47 is adjusted in the opposite direction of the sliding body 46, the amplitude of the compression spring decreases when the sliding body 46 resists the expansion of the tooth block 410, and the maximum pressure value that the support roller 2 can apply to the working roller 1 is reduced, so the cold rolling pressure intensity can be adjusted in a targeted manner.

[0041] After the position of the transverse slider 4 is positioned, the reaction force borne by the support roller 2 is applied to the base block 43, the pressure of the base block 43 is applied to the pressure sensor 44, and the support force of each support roller 2 is fed back through the pressure value of the pressure sensor 44. In theory, the support forces of the four support rollers 2 should be the same. If there are differences in the pressure values fed back by the pressure sensor 44, the maximum pressure value at the end of the corresponding support roller 2 can be adjusted, that is, the stud 48 is rotated to adjust the position of the stop block 47 in the sliding groove 45, and the force of the sliding body 46 compressing the spring during the positioning of the transverse slider 4 is adjusted until the values of the four pressure sensors 44 are the same.

[0042] Embodiment 2 is different from Embodiment 1 in the expansion method of the tooth block 410. As Figure 9 shown, the tooth block 410 is symmetrically rotatably arranged at the upper and lower parts of the slide base 41 through a torsion spring. The edge of the tooth block 410 in contact with the inclined surface part 411 is arc-shaped. By the inclined surface part 411 of the sliding body 46 abutting against the arc edge of the tooth block 410, the tooth block 410 is expanded in a rotational manner to be engaged with the rack 9.

[0043] Embodiment 3 is different from Embodiment 1 in that: one hydraulic cylinder 7 is adopted. As Figure 2 shown, both ends of the hydraulic cylinder 7 are respectively hinged to the connecting columns 62 of the two branches of the scissors frame 6. Tooth plates 8 are fixedly arranged corresponding to the two lower branches of the scissors frame 6, and a gear 81 is rotatably arranged on the surface of the frame 3. The gear 81 is synchronously engaged with the two tooth plates 8. The telescopic movement of the hydraulic cylinder 7 pushes the scissors frame 6 to perform an opening and closing movement. Through the engagement restriction of the two tooth plates 8 and the gear 81, the opening and closing amplitudes on both sides of the scissors frame 6 are the same, ensuring that the moving distances of the two transverse sliders 4 in the horizontal position are the same.

[0044] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A cold rolling equipment for silicon steel with uniform pressure, comprising: A frame (3) with a straight-through structure, inside which two working rolls (1) are horizontally and parallelly distributed up and down. A gap for conducting silicon steel is formed between the two working rolls (1). It is characterized in that two support rolls (2) are symmetrically arranged on the far sides of the two working rolls (1). The two support rolls (2) are horizontally and spaced apart, and the two support rolls (2) jointly abut against the working roll (1) in the direction of the silicon steel conduction gap.

2. The cold rolling equipment for silicon steel with uniform pressure according to claim 1, wherein The included angle r between the central connection line of the cross-sections of the support roll (2) and the working roll (1) and the vertical line is less than 55°. The distance t between the two support rolls (2) is less than 2 / 3 of the diameter d of the working roll (1).

3. The cold rolling equipment for silicon steel with uniform pressure according to claim 1, characterized in that The ends of the two horizontally arranged support rolls (2) are horizontally slidably arranged through a transverse slider (4). The ends of the two working rolls (1) are vertically slidably arranged through a vertical slider (5). An expansion spring is arranged between the vertical sliders (5). Both sides of the frame (3) are provided with scissor members. The hinge points of the scissor members are aligned with the middle positions of the two working rolls (1). Sliding openings (61) are opened on the four branches of the scissor frame (6). The transverse slider (4) has a cylindrical handle (49), and the cylindrical handle (49) is correspondingly inserted into the sliding opening (61). A hydraulic cylinder (7) is connected between the two branches of the scissor frame (6). The hydraulic cylinder (7) drives the scissor frame (6) to rotate, pushing the two support rolls (2) in the horizontal position to perform an opening and closing movement for pushing and pressing the working roll (1) to vertically move to adjust the conduction gap of the silicon steel.

4. The silicon steel cold rolling equipment with uniform pressure according to claim 3, characterized in that, Horizontal transverse chutes (31) and vertical chutes (32) extending vertically are opened on both sides of the frame (3). The transverse slider (4) linearly slides in the transverse chute (31), and the vertical slider (5) linearly slides in the vertical chute (32). The transverse slider (4) includes a sliding seat (41). An activity groove (42) is opened on the surface of the sliding seat (41). A base block (43) is arranged in the activity groove (42). The end of the support roll (2) is rotatably connected to the base block (43). The base block (43) abuts against the activity groove (42) through a pressure sensor (44).

5. The cold rolling equipment for silicon steel with uniform pressure according to claim 4, characterized in that, Rack bars (9) are arranged on the upper and lower parts of the transverse chute (31). A sliding groove (45) is formed on the surface of the sliding seat (41). A slider (46) is horizontally and elastically slidably arranged in the sliding groove (45) through a spring. The cylindrical handle (49) is connected to the slider (46). Tooth blocks (410) are symmetrically arranged on the upper and lower parts of the sliding seat (41). One end of the slider (46) pointing to the tooth block (410) has an inclined surface part (411). The slider (46) squeezes the tooth block (410) through the inclined surface part (411), enabling the tooth block (410) to be clamped with the rack bar (9) in an expanded manner to position the position of the sliding seat (41).

6. The silicon steel cold rolling equipment with uniform pressure according to claim 5, characterized in that, The tooth blocks (410) are symmetrically and vertically slidably arranged on the upper and lower parts of the sliding seat (41). Springs are connected between the tooth blocks (410) and the sliding seat (41), enabling the tooth blocks (410) to have a tendency to contract into the interior of the sliding seat (41). The contact parts between the tooth blocks (410) and the inclined surface part (411) are in a matching inclined surface shape.

7. The cold rolling equipment for silicon steel with uniform pressure according to claim 5, characterized in that, The tooth blocks (410) are symmetrically rotatably arranged at the upper and lower parts of the sliding seat (41) through torsion springs, and the edges of the tooth blocks (410) in contact with the inclined faces (411) are arc-shaped.

8. The silicon steel cold rolling equipment with uniform pressure according to claim 5, characterized in that A stop block (47) is slidably arranged in the sliding groove (45), a spring is arranged between the sliding body (46) and the stop block (47), and a stud (48) is rotatably inserted into the sliding groove (45) from the side end of the sliding seat (41), and the stud (48) threadedly penetrates through the stop block (47).

9. The cold rolling equipment for silicon steel with uniform pressure according to claim 3, characterized in that One hydraulic cylinder (7) is adopted, and the two ends of the hydraulic cylinder (7) are respectively hinged to the two branches of the scissors frame (6). The two branches of the scissors frame (6) are correspondingly fixed with toothed plates (8), and a gear (81) is rotatably arranged on the surface of the frame (3), and the gear (81) synchronously meshes with the two toothed plates (8).

10. The cold rolling equipment for silicon steel with uniform pressure according to claim 3, characterized in that, Two hydraulic cylinders (7) are adopted, and the two hydraulic cylinders (7) are respectively connected to the two branches of the scissors frame (6).

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