Rolling mill

Abstract

The utility model relates to the field of steel coil production, in particular to a rolling mill, and aims to solve the technical problems that in the prior art, the pressing thickness of a steel coil is relatively complicated to adjust, and gaps need to be adjusted one by one, two groups of rollers are rotationally connected in a lower rack and an upper rack, and the upper and lower groups of rollers are arranged in a mirror image manner and oppositely rotate in opposite directions; the gap between the upper roller and the lower roller in the conveying direction of the conveyor is gradually reduced, a sliding groove is formed in the top wall of the upper rack, the upper rack is slidably connected to a sliding frame through the sliding groove, the lower end of the sliding frame is connected to the lower rack, the upper end of the sliding frame is connected with a top frame, and a hydraulic cylinder is connected between the top frame and the upper rack. As the gap between the upper and lower rollers in the conveying direction of the conveyor is gradually reduced, the two groups of rollers pull the plate into the gap to be rolled step by step, and when the thickness of a finished product needs to be adjusted, the adjusting hydraulic cylinder is combined with the whole to adjust all the gap distances.

Description

Technical Field

[0001] The utility model relates to the field of steel coil production, in particular to a rolling mill. Background Art

[0002] The rolling mill plays a crucial role in the iron and steel manufacturing industry. It processes the rough steel billet into steel with the required shape and size through a physical deformation process. The commonly used technologies and equipment in the industry are such that traditional hot rolling mills use multi-pass rolling. Starting from a high-temperature steel billet, through a series of rolling rolls, its thickness is gradually reduced while its length and width are increased, and finally a steel coil with the required specifications is formed. This process is usually carried out at a high temperature to improve the plasticity of the steel and reduce the rolling force;

[0003] In the prior art, it is rather cumbersome to adjust the pressing thickness of the steel coil, and the gap needs to be adjusted one by one. The utility model solves the above problems. Summary of the Utility Model

[0004] In order to solve the technical problem that it is rather cumbersome to adjust the pressing thickness of the steel coil in the prior art and the gap needs to be adjusted one by one, the utility model further provides a rolling mill.

[0005] A rolling mill includes: a lower frame and an upper frame. Two groups of rolling rolls are rotatably connected inside the lower frame and the upper frame respectively. The upper and lower two groups of rolling rolls are arranged mirror-symmetrically and rotate in opposite directions. The gap between the upper and lower rolling rolls gradually decreases along the conveying direction of the conveyor. A chute is opened on the top wall of the upper frame. The upper frame is slidably connected to the sliding frame through the chute. The lower end of the sliding frame is connected to the lower frame, and the upper end of the sliding frame is connected to a top frame. A hydraulic cylinder is connected between the top frame and the upper frame.

[0006] Furthermore, a chip scraping mechanism is in contact with the upper part of the upper rolling roll. The chip scraping mechanism can scrape off the impurities on the surface of the rolling roll. A chip collecting port is opened on the top wall of the upper frame above each chip scraping mechanism. The chip collecting channel is hermetically buckled above all the chip collecting ports and is connected to the top wall of the upper frame. The chip collecting channel is communicated with the chip collecting box. The chip collecting box is communicated with the air inlet end of the fan through a filter screen. The air outlet end of the fan is communicated with the air outlet. The air outlet is opened on the top wall of the upper frame and is located at the feeding end of the rolling mill.

[0007] Furthermore, the chip scraping mechanism includes a scraping plate. The lower end of the scraping plate is in contact with the outer surface of one side of the upper part of the rolling roll. The scraping plate is located on the side where the rotation direction of the rolling roll is downward. The upper end of the scraping plate is rotatably connected to the inside of the upper frame through a rotating shaft. A first supporting ear is connected to the side surface of the scraping plate. The first supporting ear is hinged to the telescopic end of the chip scraping hydraulic cylinder. The fixed end of the chip scraping hydraulic cylinder is hinged inside the second supporting ear. The second supporting ear is connected to the upper frame.

[0008] Advantages of the Utility Model

[0009] 1. The high-temperature sheet is conveyed by a conveyor and enters between two sets of rolling rolls. Since the gap between the upper and lower rolling rolls gradually decreases along the conveying direction of the conveyor, the two sets of rolling rolls draw the sheet into the gap for step-by-step rolling. When adjusting the finished thickness, the adjusting hydraulic cylinder adjusts all the gap distances integrally.

[0010] 2. The scraper scrapes off the dust and chips adhered to the rolling rolls, improving the cleanliness of the steel coil. The dust and chips are sucked in and collected by the fan, and the air outlet end of the fan blows air onto the upper surface of the steel strip to remove the dust and chips. Description of the Drawings

[0011] Figure 1 is a schematic structural diagram of the present utility model Figure 1 ;

[0012] Figure 2 is a schematic structural diagram of the present utility model Figure 2 ;

[0013] Figure 3 is a schematic cross-sectional structural diagram of the present utility model;

[0014] Figure 4 is a schematic structural diagram of the present utility model Figure 3 .

[0015] In the figure: lower frame 1; upper frame 2; rolling roll 3; sliding groove 4; sliding carriage 5; top frame 6; hydraulic cylinder 7; chip scraping mechanism 8; scraper 81; first ear 82; chip scraping hydraulic cylinder 83; second ear 84; chip collecting port 9; chip collecting channel 10; chip collecting box 11; filter screen 12; fan 13; air outlet 14. Detailed Embodiment

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0017] In the present device, the so-called rotational connection means that the bearing is heated and installed on the shaft, and a circlip groove is provided on the shaft or the shaft hole. The axial fixation of the bearing is achieved by clamping an elastic circlip in the circlip groove to realize rotation; the so-called hinge connection means a connection method that moves on connecting parts such as hinges, pin shafts, and short shafts.

[0018] The following will describe the present utility model in detail with reference to the accompanying drawings.

[0019] Embodiment 1:

[0020] The following combines the attached Figures 1-4This embodiment describes a rolling mill, which includes: a lower frame 1 and an upper frame 2. Two sets of rolling rolls 3 are rotatably connected inside the lower frame 1 and the upper frame 2. The upper and lower sets of rolling rolls 3 are arranged in a mirror image and rotate in opposite directions. The gap between the upper and lower rolling rolls 3 gradually decreases along the conveying direction of the conveyor. A chute 4 is provided on the top wall of the upper frame 2. The upper frame 2 is slidably connected to a carriage 5 through the chute 4. The lower end of the carriage 5 is connected to the lower frame 1, and the upper end of the carriage 5 is connected to a top frame 6. A hydraulic cylinder 7 is connected between the top frame 6 and the upper frame 2;

[0021] Power drives the upper and lower sets of rolling rolls 3 to rotate in opposite directions. The conveyor transports the sheet material into the gap between the two sets of rolling rolls 3. Since the gap between the upper and lower rolling rolls 3 gradually decreases along the conveying direction of the conveyor, the two sets of rolling rolls 3 draw the sheet material into the gap for step-by-step rolling, and the rolling rolls 3 will not be damaged due to excessive differences in rolling dimensions. When it is necessary to adjust the gap between the rolling rolls 3, control the telescopic movement of the hydraulic cylinder 7. The hydraulic cylinder 7 drives the upper frame 2 to slide along the carriage 5, and the upper frame 2 drives all the upper rolling rolls 3 to displace, completing the overall gap adjustment.

[0022] A chip scraping mechanism 8 is in contact with the upper part of the upper rolling roll 3. The chip scraping mechanism 8 can scrape off the impurities on the surface of the rolling roll 3. A chip collection port 9 is provided on the top wall of the upper frame 2 above each chip scraping mechanism 8. A chip collection channel 10 is hermetically buckled above all the chip collection ports 9 and is connected to the top wall of the upper frame 2. The chip collection channel 10 is communicated with a chip collection box 11. The chip collection box 11 is communicated with the air inlet end of a fan 13 through a filter screen 12. The air outlet end of the fan 13 is communicated with an air outlet 14. The air outlet 14 is provided on the top wall of the upper frame 2 and is located at the feeding end of the rolling mill;

[0023] The chip scraping mechanism 8 scrapes off the impurities of the sheet material adhered to the upper rolling roll 3. Turn on the fan 13. The fan 13 sucks the impurities scraped off by the chip scraping mechanism 8 through the chip collection channel 10 and the corresponding chip collection port 9 and stores them in the chip collection box 11. The fan 13 exhausts air downward to remove the air above the sheet material.

[0024] The chip scraping mechanism 8 includes a scraper 81. The lower end of the scraper 81 is in contact with the outer surface of one side of the upper part of the rolling roll 3. The scraper 81 is located on the side where the rotation direction of the rolling roll 3 is downward. The upper end of the scraper 81 is rotatably connected to the upper frame 2 through a rotating shaft. An ear 82 is connected to the side of the scraper 81. The ear 82 is hinged to the telescopic end of a chip scraping hydraulic cylinder 83. The fixed end of the chip scraping hydraulic cylinder 83 is hinged inside an ear 84, and the ear 84 is connected to the upper frame 2;

[0025] The scraper 81 scrapes off the impurities of the sheet material adhered to the rolling roll 3. Since the scraper 81 is located on the side where the rotation direction of the rolling roll 3 is downward, the impurities remain on the upper part of the scraper 81 and will not be missed when sucked by the fan. When the scraper 81 is worn, adjust the chip scraping hydraulic cylinder 83 to control the rotation of the scraper 81 to continue to contact the rolling roll 3.

[0026] It should be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising said element.

[0027] Although 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. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rolling mill, characterized in that: Including: The lower frame (1) and the upper frame (2). There are two groups of rolling rolls (3) rotatably connected inside the lower frame (1) and the upper frame (2). The upper and lower two groups of rolling rolls (3) are arranged in a mirror image and rotate in opposite directions. The gap between the upper and lower rolling rolls (3) along the conveying direction of the conveyor gradually decreases. A chute (4) is provided on the top wall of the upper frame (2). The upper frame (2) is slidably connected to the sliding frame (5) through the chute (4). The lower end of the sliding frame (5) is connected to the lower frame (1). The upper end of the sliding frame (5) is connected with a top frame (6). A hydraulic cylinder (7) is connected between the top frame (6) and the upper frame (2).

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