Finishing roller capable of improving surface quality of strip steel of cold-rolled silicon steel continuous annealing unit

Abstract

The invention relates to the technical field of cold rolling technical equipment, and discloses a finishing roller capable of improving the surface quality of strip steel of a cold-rolled silicon steel continuous annealing unit. The finishing roller comprises a center shaft, a bearing is fixedly connected to the end of the center shaft, and the outer wall of the center shaft is fixed to the inner ring wall of the bearing; an inner clamping spring is clamped to the position, close to the bearing, of the center shaft, a positioning bolt is arranged at the end of the center shaft, an outer clamping spring is clamped to the outer wall of the bearing, an oil inlet pipe penetrates through the center of the end of the center shaft and is fixedly connected with the center of the end of the center shaft, and a first arc plate and a second arc plate are clamped to the outer ring of the bearing. The outer wall of the first arc plate and the outer wall of the second arc plate are coated with rubber coating jackets. By arranging the first arc plate, the second arc plate and the rubber coating jacket, the surface quality defects of the silicon steel strip of the continuous annealing unit can be eliminated on line, the product surface quality is improved, the strip shape is improved, and therefore the yield and the first-grade product rate of silicon steel products of the continuous annealing unit are increased.

Description

Technical Field

[0001] The invention relates to the technical field of cold rolling technical equipment, in particular to a finishing roller capable of improving the surface quality of strip steel of a cold-rolled silicon steel continuous annealing unit. Background Art

[0002] The function of the silicon steel continuous annealing unit is to anneal and coat the cold-hardened silicon steel strip after rolling by the 20-roller mill to eliminate the internal stress of the cold-rolled strip, restore plasticity and promote recrystallization grain growth. At the same time, the continuous annealing unit applies an insulating layer to the surface of the annealed strip to improve the mechanical properties and surface quality of the steel plate. The silicon steel continuous annealing unit is one of the most critical units in the production of cold-rolled silicon steel.

[0003] The silicon steel continuous annealing process and equipment are complicated. The silicon steel strip is first degreased in the cleaning section of the continuous annealing unit, and then enters the annealing furnace of more than 400 meters for annealing. The strip will bend after heating. At the same time, due to the large number of annealing furnace rollers and nodules on the furnace rollers, the surface of the strip after leaving the annealing furnace will also have slight scratches and pressure pits. The above strip surface defects will seriously affect the quality of the subsequent insulation layer of the strip, and ultimately affect the quality of the finished silicon steel strip, and seriously affect the yield rate and first-grade rate of high-grade thin-gauge silicon steel strip products. Therefore, a finishing roller that can improve the surface quality of thin-gauge high-grade cold-rolled silicon steel is specially designed to eliminate the above product quality and plate shape defects and improve the first-grade rate and yield rate of the product. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a finishing roller that can improve the surface quality of the strip steel in the cold-rolled silicon steel continuous annealing unit, aiming to eliminate slight scratches and dents on the surface of the strip steel after leaving the annealing furnace due to the large number of annealing furnace rollers and nodules on the furnace rollers.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a finishing roller capable of improving the surface quality of the strip steel of a cold-rolled silicon steel continuous annealing unit, comprising a center shaft, the end of the center shaft is fixedly connected to a bearing, the outer wall of the center shaft is fixed to the inner ring wall of the bearing, the center shaft is clamped with an inner retaining spring near the bearing, a positioning bolt is arranged at the end of the center shaft, an outer retaining spring is clamped on the outer wall of the bearing, an oil inlet pipe passes through and is fixedly connected to the center of the end of the center shaft, a first arc plate and a second arc plate are respectively clamped on the outer ring of the bearing, the outer walls of the first arc plate and the second arc plate are covered with a rubber-coated jacket, and the first arc plate and the second arc plate are detachably installed through a limiting mechanism.

[0006] Preferably, the limiting mechanism includes an arc-shaped clamping block, the ends of the first arc plate and the second arc plate are both provided with arc-shaped grooves, the outer wall of the arc-shaped clamping block is slidably connected to the inner wall of the arc-shaped groove, the end of the arc-shaped clamping block is fixedly connected to a fixed sleeve, a button passes through and is slidably connected to the inner wall of the fixed sleeve, and the outer wall of the button is elastically connected to the inner wall of the fixed sleeve through a reset spring.

[0007] Preferably, the two groups of arc-shaped grooves are interconnected, and the center of the arc-shaped groove coincides with the center of the first arc plate.

[0008] Preferably, the outer end of the button is rectangular and extends inwardly, and the ends of the first arc plate and the second arc plate are provided with a slot, and the outer wall of the button is snap-connected to the inner wall of the slot.

[0009] Preferably, the outer wall of the button is fixedly connected to one end of the reset spring, and the other end of the reset spring is fixedly connected to the inner wall of the fixed sleeve.

[0010] Preferably, a limiting groove is provided on the outer wall of the outer ring of the bearing, and limiting blocks are fixedly connected to the inner walls of the first arc plate and the second arc plate, the limiting blocks are snap-fitted to the limiting groove, and the outer wall of the insert block is inserted into the inner wall of the slot.

[0011] Preferably, slots are provided on the side walls of the first arc plate and the second arc plate, and plug blocks are fixedly connected to the side walls opposite to the first arc plate and the second arc plate.

[0012] Preferably, the inner walls of the first arc plate and the second arc plate are both provided with retaining spring grooves.

[0013] Preferably, the first supporting frame and the second supporting frame are fixedly connected to the inner walls of the first arc plate and the second arc plate, and two groups of the first supporting frames form an inverted triangle when the first arc plate and the second arc plate are spliced, and two groups of the second supporting frames form an upright triangle when the first arc plate and the second arc plate are spliced.

[0014] Preferably, the first arc plate and the second arc plate are both made of high-strength alloy metal, and the rubber-coated jacket is made of nanomaterial.

[0015] Working principle: When the roller needs to be replaced, first cut the rubber jacket, and move the button outward to disengage the button from the first arc plate and the second arc plate. At this time, move the button to drive the fixed sleeve to move, so that the fixed sleeve drives the arc block to move, and each returns to the corresponding arc plate. At this time, the first arc plate and the second arc plate can be disassembled and replaced. When installing the new first arc plate and the second arc plate, first align the limit block with the limit groove, and then align the retaining spring groove with the outer retaining spring. At this time, bring the first arc plate and the second arc plate close to each other, and insert the limit block into the limit groove. The plug-in block is plugged into the slot. At this time, the outer retaining spring is clamped in the retaining spring groove, which can play a role in preliminary positioning of the first arc plate and the second arc plate. Subsequently, the button is moved from the slot, and the arc-shaped clamping block is moved to connect with the arc grooves on the first arc plate and the second arc plate respectively. At this time, the button is clamped in another slot, and the installation of the first arc plate and the second arc plate is completed at the same time. At the same time, the new rubber jacket can be coated on the outer surface of the first arc plate and the second arc plate, or the nano material can be melted and sprayed on the surface of the first arc plate and the second arc plate, and coated on its surface as it rotates, so as to achieve the effect of quick replacement.

[0016] The present invention provides a finishing roller capable of improving the surface quality of the strip steel of the cold-rolled silicon steel continuous annealing unit. It has the following beneficial effects:

[0017] 1. The present invention provides a finishing roller capable of improving the surface quality of the strip of a cold-rolled silicon steel continuous annealing unit. By setting a first arc plate and a second arc plate, and a rubber-coated outer jacket, and respectively installing two finishing rollers at the optimal position after the outlet of the annealing furnace of the silicon steel continuous annealing unit and before the roller coater, it is ensured that the upper and lower surfaces of the silicon steel strip can be simultaneously subjected to plate surface defect elimination and finishing operations, and the surface quality defects of the silicon steel strip of the continuous annealing unit can be eliminated online, thereby improving the surface quality of the product and improving the plate shape, thereby improving the yield rate and first-class product rate of the silicon steel products of the continuous annealing unit.

[0018] 2. The present invention provides a finishing roller capable of improving the surface quality of the strip of cold-rolled silicon steel annealing unit. By setting a limiting mechanism, the device does not need to be disassembled as a whole during replacement. Only the first arc plate and the second arc plate need to be disassembled separately to be replaced. Manual replacement is simpler and more convenient, which greatly reduces the cost of use.

[0019] 3. The present invention provides a finishing roller capable of improving the surface quality of the strip of cold-rolled silicon steel continuous annealing unit. By setting an oil inlet pipe, the oil inlet pipe is externally connected to a lubricating oil pipeline, so that the bearing can be continuously lubricated to avoid the situation where the internal lubrication is not timely due to long-term operation, thereby improving the overall service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an overall stereogram of the present invention;

[0021] Figure 2 It is a three-dimensional schematic diagram of the splitting of the first arc plate and the second arc plate of the present invention;

[0022] Figure 3 It is a schematic diagram of the first support frame and the second support frame of the present invention;

[0023] Figure 4 It is a three-dimensional schematic diagram of the splitting of the first support frame and the second support frame of the present invention;

[0024] Figure 5 It is a disassembled three-dimensional schematic diagram of the limiting mechanism of the present invention;

[0025] Figure 6 It is a schematic diagram of a disassembled three-dimensional view of the rubber-encapsulated jacket of the present invention;

[0026] Figure 7 It is a three-dimensional schematic diagram of the end of the first arc plate of the present invention.

[0027] Among them, 1. first arc plate; 2. second arc plate; 3. center axis; 4. limit groove; 5. bearing; 6. oil inlet pipe; 7. inner retaining spring; 8. outer retaining spring; 9. limit mechanism; 91. slot; 92. insert block; 93. arc groove; 94. fixed sleeve; 95. reset spring; 96. button; 97. arc block; 10. first support frame; 11. second support frame; 12. limit block; 13. retaining spring groove; 14. rubber jacket; 15. positioning bolt. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1 , Figure 2 , Figure 7The embodiment of the present invention provides a finishing roller capable of improving the surface quality of the strip of the cold-rolled silicon steel continuous annealing unit, comprising a central shaft 3, a bearing 5 fixedly connected to the end of the central shaft 3, the outer wall of the central shaft 3 is fixed to the inner ring wall of the bearing 5, the bearing 5 is divided into an inner ring and an outer ring, and mutual sliding can occur between them, which is a prior art well known to personnel in the field, and can reduce the friction generated by the rotation by playing a stable rotation, an inner retaining ring 7 is clamped at the central shaft 3 near the bearing 5, a positioning bolt 15 is arranged at the end of the central shaft 3, and the positioning bolt 15 enables the central shaft 3 to be accurately installed in place, an oil inlet pipe 6 is passed through and fixedly connected at the center of the end of the central shaft 3, the oil inlet pipe 6 is externally connected to the lubricating oil pipeline, the inner end of the oil inlet pipe 6 is connected to the inner cavity of the bearing 5, the lubricating oil enters the bearing 5 through the oil inlet pipe 6 to lubricate the bearing 5, and no disassembly is required for oiling and lubrication, and the lubrication performance of the bearing 5 can be maintained in real time.

[0030] See also Figure 4-Figure 7 The outer ring of the bearing 5 is respectively clamped with the first arc plate 1 and the second arc plate 2. The first arc plate 1 and the second arc plate 2 are made of high-strength alloy metal and have high strength. The outer walls of the first arc plate 1 and the second arc plate 2 are coated with a rubber jacket 14. The rubber jacket 14 is made of nanomaterials. Through the surface modification of nanomaterials, the surface roughness and lubricity of the roller can be optimized, and the surface quality and production efficiency of the silicon steel plate can be improved. The use of nanomaterials can reduce the surface friction coefficient, reduce scratches and surface damage, and enhance the surface hardness, wear resistance and corrosion resistance of the finishing roller. The first arc plate 1 and the second arc plate 2 are detachably installed through a limiting mechanism 9. The limiting mechanism 9 includes an arc-shaped clamping block 97. The ends of the first arc plate 1 and the second arc plate 2 are both provided with arc grooves 93. The two groups of arc grooves 93 are interconnected. The center of the arc groove 93 coincides with the center of the first arc plate 1. The outer wall of the arc clamping block 97 is smooth. The first arc plate 1 and the second arc plate 2 are movably connected to the inner wall of the arc groove 93. When the arc block 97 contacts the inner walls of the two groups of arc grooves 93 at the same time, the first arc plate 1 and the second arc plate 2 can be fixed to prevent them from separating. The end of the arc block 97 is fixedly connected to a fixed sleeve 94. A button 96 passes through and is slidably connected to the inner wall of the fixed sleeve 94. The outer end of the button 96 is rectangular and extends inward. A card slot is provided at the end of the first arc plate 1 and the second arc plate 2. The outer wall of the button 96 is clamped on the inner wall of the card slot. When clamped on the inner wall of the card slot, the position of the button 96 can be limited to prevent movement in the arc groove 93. The outer wall of the button 96 is fixedly connected to one end of a return spring 95. The other end of the return spring 95 is fixedly connected to the inner wall of the fixed sleeve 94. The elasticity of the return spring 95 can ensure that the button 96 always remains in a state of being clamped with the card slot without being affected by external forces.

[0031] See also Figure 4-Figure 5, a limiting groove 4 is provided on the outer wall of the outer ring of the bearing 5, and a limiting block 12 is fixedly connected to the inner walls of the first arc plate 1 and the second arc plate 2. The limiting block 12 is clamped with the limiting groove 4, which can drive the outer ring of the bearing 5 to rotate when the first arc plate 1 and the second arc plate 2 rotate. An external retaining spring 8 is clamped on the outer wall of the bearing 5, and a retaining spring groove 13 is provided on the inner walls of the first arc plate 1 and the second arc plate 2. The inner wall of the retaining spring groove 13 is clamped with the external retaining spring 8. When they are clamped, a lateral limiting effect can be exerted on the first arc plate 1 and the second arc plate 2 to prevent lateral displacement during rotation. A slot 91 is provided on the side walls of the first arc plate 1 and the second arc plate 2, and an insert block 92 is fixedly connected to the opposite side walls of the first arc plate 1 and the second arc plate 2. The outer wall of the insert block 92 is plugged into the inner wall of the slot 91, so that the first arc plate 1 and the second arc plate 2 can be accurately docked when spliced, reducing the difficulty of installation.

[0032] See also Figure 3-Figure 4 The first supporting frame 10 and the second supporting frame 11 are fixedly connected to the inner walls of the first arc plate 1 and the second arc plate 2. When the two groups of first supporting frames 10 are spliced ​​with the first arc plate 1 and the second arc plate 2, they can form an inverted triangle. When the two groups of second supporting frames 11 are spliced ​​with the first arc plate 1 and the second arc plate 2, they can form an upright triangle, which significantly enhances the structural strength of the first arc plate 1 and the second arc plate 2 at the splicing position, and effectively prevents the dent problem caused by the extrusion effect on the strip surface during the splicing process, which not only improves the overall strength of the spliced ​​joint, but also ensures the flatness of the strip surface, avoiding potential damage caused by dents, thereby extending the service life of the equipment and improving production efficiency and product quality.

[0033] Two finishing rollers are installed at the best position after the annealing furnace outlet of the silicon steel continuous annealing unit and before the roller coater. The two rollers are arranged in parallel, perpendicular to the center line of the unit, one high and one low, to ensure that the upper and lower surfaces of the silicon steel strip can be cleaned and finished at the same time, and the whole can be quickly replaced and accurately positioned.

[0034] Two finishing rollers are installed after the annealing furnace exit of the silicon steel continuous annealing unit and before the roller coater. The two finishing rollers are arranged in parallel, that is, one roller is higher than the other, which can ensure that the upper and lower surfaces of the silicon steel strip are simultaneously subjected to surface defect elimination and finishing operations. The overall arrangement can be quickly replaced and accurately positioned, which greatly improves production efficiency, reduces downtime, and thus reduces production costs. Generally speaking, this layout improves production efficiency while also ensuring product quality and reducing production costs.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A finishing roller capable of improving the surface quality of a cold-rolled silicon steel strip in a continuous annealing unit, comprising a central shaft (3), characterized in that: The end of the central shaft (3) is fixedly connected to a bearing (5), the outer wall of the central shaft (3) is fixed to the inner ring wall of the bearing (5), and the central shaft (3) is clamped with an inner retaining spring (7) near the bearing (5). The end of the central shaft (3) is provided with a positioning bolt (15), and the outer wall of the bearing (5) is clamped with an outer retaining spring (8). The center of the end of the central shaft (3) passes through and is fixedly connected with an oil inlet pipe (6), and the outer ring of the bearing (5) is respectively clamped with a first arc plate (1) and a second arc plate (2), and the outer walls of the first arc plate (1) and the second arc plate (2) are covered with a rubber jacket (14), and the first arc plate (1) and the second arc plate (2) can be detachably installed through a limiting mechanism (9).

2. The finishing roller for improving the surface quality of the strip steel in the cold-rolled silicon steel annealing unit according to claim 1, characterized in that: The limiting mechanism (9) comprises an arc-shaped clamping block (97), the ends of the first arc plate (1) and the second arc plate (2) are both provided with an arc-shaped groove (93), the outer wall of the arc-shaped clamping block (97) is slidably connected to the inner wall of the arc-shaped groove (93), the end of the arc-shaped clamping block (97) is fixedly connected to a fixed sleeve (94), a button (96) passes through and is slidably connected to the inner wall of the fixed sleeve (94), and the outer wall of the button (96) is elastically connected to the inner wall of the fixed sleeve (94) via a reset spring (95).

3. The finishing roller for improving the surface quality of the strip steel in the cold-rolled silicon steel annealing unit according to claim 2, characterized in that: The two groups of arc-shaped grooves (93) are interconnected, and the center of the arc-shaped groove (93) coincides with the center of the first arc plate (1).

4. The finishing roller for improving the surface quality of the strip steel of the cold-rolled silicon steel continuous annealing unit according to claim 2 is characterized in that: The outer end of the button (96) is rectangular and extends inwardly; the ends of the first arc plate (1) and the second arc plate (2) are provided with slots, and the outer wall of the button (96) is snap-connected to the inner wall of the slot.

5. The finishing roller for improving the surface quality of the strip steel of the cold-rolled silicon steel annealing unit according to claim 4, characterized in that: The outer wall of the button (96) is fixedly connected to one end of a return spring (95), and the other end of the return spring (95) is fixedly connected to the inner wall of the fixed sleeve (94).

6. The finishing roller for improving the surface quality of the strip steel in the cold-rolled silicon steel annealing unit according to claim 2, characterized in that: A limiting groove (4) is provided on the outer wall of the outer ring of the bearing (5), and limiting blocks (12) are fixedly connected to the inner walls of the first arc plate (1) and the second arc plate (2), and the limiting blocks (12) are snap-fitted to the limiting groove (4).

7. The finishing roller for improving the surface quality of the strip steel in the cold-rolled silicon steel annealing unit according to claim 2, characterized in that: A slot (91) is provided on the side walls of the first arc plate (1) and the second arc plate (2); an insert block (92) is fixedly connected to the opposite side walls of the first arc plate (1) and the second arc plate (2); the outer wall of the insert block (92) is inserted into the inner wall of the slot (91).

8. The finishing roller for improving the surface quality of the strip steel in the cold-rolled silicon steel annealing unit according to claim 2, characterized in that: The inner walls of the first arc plate (1) and the second arc plate (2) are both provided with retaining ring grooves (13).

9. The finishing roller for improving the surface quality of the strip steel in the cold-rolled silicon steel annealing unit according to claim 2, characterized in that: A first support frame (10) and a second support frame (11) are fixedly connected to the inner walls of the first arc plate (1) and the second arc plate (2); when the first arc plate (1) and the second arc plate (2) are spliced ​​together, two groups of the first support frames (10) form an inverted triangle; and when the first arc plate (1) and the second arc plate (2) are spliced ​​together, two groups of the second support frames (11) form an upright triangle.

10. The finishing roller for improving the surface quality of the strip steel in the cold-rolled silicon steel annealing unit according to claim 8, characterized in that: The first arc plate (1) and the second arc plate (2) are both made of high-strength alloy metal, and the rubber-coated jacket (14) is made of nanomaterial.

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