Rolling mill for finish rolling steel processing

Abstract

The utility model discloses a rolling mill for finish rolling steel processing, which comprises a bearing roller and a pressing roller positioned above the bearing roller, oil scraping plates are arranged on the feeding sides of the pressing roller and the bearing roller, oil spraying pipes are arranged on the outer sides of the oil scraping plates, blowpipes are arranged on the outer sides of the oil spraying pipes, water scraping plates are arranged on the outer sides of the blowpipes, and the water scraping plates are arranged on the outer sides of the blowpipes. A water spraying pipe is arranged on the outer side of the water scraping plate, flow guide groove pipes are arranged on the upper oil scraping plate and the water scraping plate, and flow guide plates are arranged on the outer side of the lower oil spraying pipe and the water spraying pipe in a matched mode; according to the spraying and scraping device for the cooling liquid and the lubricating oil, the cooling liquid and the lubricating oil can be sprayed and scraped separately, mixing of the cooling liquid and the lubricating oil is avoided, and meanwhile the lubricating oil and the cooling liquid can be recycled and recycled conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of steel rolling mills, and more particularly to a steel rolling mill for precision steel rolling. Background Art

[0002] Fine steel processing generally refers to the precision rolling of steel to achieve specific dimensions, shapes, and material requirements. This processing method improves the dimensional accuracy, surface finish, and internal quality of the steel and is widely used in construction, automotive, machinery manufacturing, aviation, and other fields.

[0003] Finishing steel processing needs to be carried out on a rolling mill. During the finish rolling of the strip, due to the high temperature of the strip, the rolls in the rolling mill need to be cooled and lubricated to ensure the stable process of finishing strip rolling.

[0004] When scraping lubricating oil and coolant, the scraper structure used by the existing rollers is mostly a support plate structure, which cannot guide the lubricating oil and coolant after scraping them off, so that the excess coolant and lubricating oil scraped off easily overflows at the scraper position;

[0005] At the same time, it is not convenient to recycle the excess cooling liquid and lubricating oil, resulting in poor recycling effect of lubricating oil and coolant;

[0006] In addition, in the existing technology, when spraying the roller coolant and lubricating oil, the coolant and lubricating oil on the roller surface cannot be separated well, which makes it easy for the lubricating oil and the coolant to mix, affecting the lubrication effect of the roller surface, and the mixed waste liquid produced is not easy to recycle. Utility Model Content

[0007] (1) Technical problems solved

[0008] In response to the problems existing in the prior art, the utility model provides a rolling mill for fine rolled steel processing to solve the technical problems mentioned in the background technology that the rolling mill in the prior art is not convenient for scraping the sprayed coolant and lubricating oil and diverting it after scraping, and is not convenient for recovering excess lubricating oil and coolant. At the same time, it is easy to cause mixed contact between the lubricating oil and the coolant, thereby affecting the lubrication effect of the rollers.

[0009] (2) Technical solution

[0010] To achieve the above objectives, the present invention provides the following technical solutions:

[0011] A rolling mill for finishing steel processing, comprising a bearing roller and a pinch roller located above the bearing roller, wherein the pinch roller and the bearing roller are both provided with an oil scraper on the feed side, an oil spray pipe is provided on the outside of the oil scraper, an air blowing pipe is provided on the outside of the oil spray pipe, a water scraper is provided on the outside of the air blowing pipe, a water spray pipe is provided on the outside of the water scraper, a guide groove is provided on the upper oil scraper and the water scraper, and a guide plate is provided on the outer side of the oil spray pipe and the water spray pipe;

[0012] It also includes an oil storage tank and a liquid storage tank, and a return pipe is provided between the output end of the guide groove pipe and the corresponding oil storage tank and liquid storage tank.

[0013] The utility model is further configured such that a plurality of groups of conveying rollers are provided at the feed end of the carrying roller, a support column is provided between two adjacent groups of conveying rollers, a limiting roller is provided at the top end of the support column, and a driving frame is provided at the bottom end, and an electric push rod is provided on the outer side of the driving frame for realizing the limited feeding and conveying of the steel strip during the finishing rolling process.

[0014] The utility model is further configured to further include a frame, and the carrying roller is rotatably mounted on the frame through bearings.

[0015] The utility model is further configured such that a mounting frame is provided at the inner top end of the frame, the pressure roller is rotatably mounted on the mounting frame through a bearing, and a hydraulic cylinder is provided between the mounting frame and the top end of the frame for realizing the lifting and lowering adjustment of the pressure roller and realizing the pressure adjustment during the finishing steel processing.

[0016] The utility model is further configured such that a supporting frame is provided on the mounting frame, an auxiliary supporting sheet is provided on the supporting frame, and the oil scraper and the water scraper are respectively fixed to the supporting frame by bolts passing through the corresponding auxiliary supporting sheets, thereby improving the installation stability of the oil scraper and the water scraper and the load-bearing stability during use, and facilitating installation, disassembly and replacement.

[0017] The utility model is further configured to further include a support frame, wherein the support frame is used to realize the installation of the conveying roller, and the electric push rod is installed on the support frame.

[0018] The utility model is further configured such that the oil storage tank and the liquid storage tank both include a box body, an interception filter is provided inside the box body, and the box body is divided into a liquid supply chamber and a recovery chamber by the interception filter, and the return pipe and the guide plate are both connected to the recovery chamber, so as to facilitate the separation of the recovered lubricating oil and coolant, thereby improving the cleanliness during recycling and use.

[0019] The utility model is further configured such that a pump body is connected to the liquid supply cavity on both the oil storage tank and the liquid storage tank, and a liquid supply pipe is provided between the output end of the pump body and the corresponding oil injection pipe and water injection pipe for supplying liquid to the oil injection pipe and the water injection pipe.

[0020] (3) Beneficial effects

[0021] Compared with the prior art, the present invention provides a rolling mill for precision steel processing, which has the following beneficial effects:

[0022] 1. The utility model is provided with an oil scraper corresponding to the oil spray pipe, and a water scraper corresponding to the water spray pipe. In this way, the coolant and the lubricating oil can be scraped separately to avoid the mixing of the coolant and the lubricating oil, thereby improving the cooling effect of the bearing roller and the pressure roller and the application effect of the lubricating oil.

[0023] 2. At the same time, the utility model provides guide grooves on the upper scraper plate and the water scraper plate, which can guide the coolant and lubricating oil scraped off the pressing roller separately, and return them to the corresponding liquid storage tank and oil storage tank through the return pipe, so as to realize the recycling of excess coolant and lubricating oil and improve the use efficiency.

[0024] 3. The utility model is equipped with guide plates on the outside of the lower oil spray pipe and the water spray pipe. The guide plates can guide the excess coolant and lubricating oil scraped off the carrying roller, so that the excess lubricating oil and coolant can flow back to the corresponding oil storage tank and liquid storage tank for recycling.

[0025] 4. In the present invention, a blowing pipe is provided on the outside of the oil spray pipe, wherein the blowing pipe is connected to an external drying air source, so that after the coolant cools down the carrying roller and the pressure roller, the moisture on the surface of the carrying roller and the pressure roller is scraped off by the scraper, and then the surface of the carrying roller and the pressure roller can be blown and dried by the blowing pipe, thereby further improving the adhesion of the lubricating oil to the surface of the carrying roller and the pressure roller when the lubricating oil is sprayed on the subsequent carrying roller and the pressure roller, thereby improving the lubrication effect, and the method of cooling first and then applying the lubricating oil can improve the use effect of the lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of a rolling mill for precision steel processing in this utility model. Figure 1 ;

[0027] Figure 2 This is a schematic diagram of the overall structure of a rolling mill for precision steel processing in this utility model. Figure 2 ;

[0028] Figure 3It is a cross-sectional schematic diagram of the connection structure between the load-bearing roller, the pressing roller, the oil scraper, the water scraper, the water spray pipe, the oil spray pipe and the air blowing pipe in the utility model;

[0029] Figure 4 This is a schematic diagram of the connection structure between the oil scraper, oil spray pipe, pressure roller and oil storage tank in the utility model;

[0030] Figure 5 This is a schematic diagram of the connection structure between the load-bearing roller, the oil storage tank, the liquid storage tank and the guide plate in the utility model;

[0031] Figure 6 It is a cross-sectional schematic diagram of the connection structure between the support frame, the conveying roller and the limiting roller in the utility model.

[0032] In the figure: 1. Carrying roller; 2. Pressing roller; 3. Oil scraper; 4. Oil spray pipe; 5. Blowing pipe; 6. Water scraper; 7. Water spray pipe; 8. Guide trough pipe; 9. Guide plate; 10. Oil storage tank; 11. Liquid storage tank; 12. Return pipe; 13. Conveying roller; 14. Support column; 15. Limiting roller; 16. Drive frame; 17. Electric push rod; 18. Frame; 19. Mounting frame; 20. Hydraulic cylinder; 21. Carrying frame; 22. Auxiliary carrying plate; 23. Support frame; 24. Box body; 25. Intercepting filter; 26. Liquid supply chamber; 27. Recovery chamber; 28. Pump body; 29. ​​Liquid supply pipe. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0035] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned direction words are not used to limit the present invention.

[0036] See also Figure 1-6A rolling mill for finishing steel processing comprises a carrying roller 1 and a pressing roller 2 located above the carrying roller 1. The pressing roller 2 and the carrying roller 1 are both provided with an oil scraper 3 on the feeding side. An oil spray pipe 4 is provided on the outside of the oil scraper 3. An air blowing pipe 5 is provided on the outside of the oil spray pipe 4. A water scraper 6 is provided on the outside of the air blowing pipe 5. A water spray pipe 7 is provided on the outside of the water scraper 6. A guide groove pipe 8 is provided on the upper oil scraper 3 and the water scraper 6. A guide plate 9 is provided on the outer side of the lower oil spray pipe 4 and the water spray pipe 7.

[0037] It also includes an oil storage tank 10 and a liquid storage tank 11 , and a return pipe 12 is provided between the output end of the guide groove pipe 8 and the corresponding oil storage tank 10 and liquid storage tank 11 .

[0038] The utility model is provided with an oil scraper 3 corresponding to the oil spray pipe 4, and a water scraper 6 corresponding to the water spray pipe 7, so that the coolant and the lubricating oil can be scraped separately to avoid the mixing of the coolant and the lubricating oil, thereby improving the cooling effect of the carrier roller 1 and the pressure roller 2 and the application effect of the lubricating oil;

[0039] At the same time, in the utility model, by providing a guide groove pipe 8 on the upper scraper plate 3 and the water scraper plate 6, the coolant and lubricating oil scraped off the pressure roller 2 can be diverted separately, and returned to the corresponding liquid storage tank 11 and oil storage tank 10 through the return pipe 12, thereby realizing the recycling of excess coolant and lubricating oil and improving the use efficiency.

[0040] The utility model is equipped with guide plates 9 on the outside of the lower oil spray pipe 4 and the water spray pipe 7. The guide plates 9 can guide the excess coolant and lubricating oil scraped off the carrying roller 1, so that the excess lubricating oil and coolant can flow back to the corresponding oil storage tank 10 and liquid storage tank 11 for recycling.

[0041] In the utility model, a blowing pipe 5 is provided on the outside of the oil spray pipe 4, wherein the blowing pipe 5 is connected to an external drying air source, so that after the coolant cools down the carrying roller 1 and the pressure roller 2, the moisture on the surface of the carrying roller 1 and the pressure roller 2 is scraped off by the scraper 6, and then the surface of the carrying roller 1 and the pressure roller 2 can be blown and dried by the blowing pipe 5, thereby further improving the adhesion of the lubricating oil to the surface of the carrying roller 1 and the pressure roller 2 when the lubricating oil is sprayed on the subsequent carrying roller 1 and the pressure roller 2, thereby improving the lubrication effect, and the method of cooling first and then applying the lubricating oil can improve the use effect of the lubricating oil.

[0042] See also Figures 1-6As an implementation method of the rolling mill: a plurality of groups of conveying rollers 13 are provided at the feed end of the carrying roller 1, a support column 14 is provided between two adjacent groups of conveying rollers 13, a limiting roller 15 is provided at the top of the support column 14, and a driving frame 16 is provided at the bottom end, and an electric push rod 17 is provided on the outside of the driving frame 16.

[0043] Specifically, the steel strip is conveyed during fine rolling by the conveying roller 13, wherein the drive frame 16 can be controlled to drive the movement of the support column 14 by controlling the extension and contraction of the electric push rod 17, and the movement of the limiting roller 15 can be controlled by the movement of the support column 14. The limiting roller 15 can realize the limitation of the steel strip during the conveying process, thereby improving the stability and limiting performance of the steel strip during the conveying process.

[0044] The present invention further comprises a frame 18 , and the carrying roller 1 is rotatably mounted on the frame 18 via a bearing, thereby achieving stable installation of the carrying roller 1 .

[0045] In the present invention, a mounting frame 19 is provided at the inner top of the frame 18 , the pressing roller 2 is rotatably mounted on the mounting frame 19 via a bearing, and a hydraulic cylinder 20 is provided between the mounting frame 19 and the top of the frame 18 .

[0046] Specifically, by starting the hydraulic cylinder 20, the lifting and lowering movement of the mounting frame 19 can be controlled. The lifting and lowering movement of the mounting frame 19 can control the lifting and lowering movement of the pressure roller 2, thereby adjusting the distance between the pressure roller 2 and the supporting roller 1, thereby adjusting the pressure of the steel strip during finish rolling.

[0047] In the present invention, a carrier frame 21 is provided on the mounting frame 19 , and an auxiliary carrier sheet 22 is provided on the carrier frame 21 . The oil scraper 3 and the water scraper 6 are fixed to the carrier frame 21 by bolts passing through the corresponding auxiliary carrier sheets 22 .

[0048] Specifically, the provision of the auxiliary supporting sheet 22 can improve the anti-deformation bearing performance of the water scraper 6 and the oil scraper 3 when scraping the surface of the supporting roller 1 and the pressure roller 2, and improve the use strength and stability of the water scraper 6 and the oil scraper 3. At the same time, the oil scraper 3, the water scraper 6 and the auxiliary supporting sheet 22 in the utility model can be detachably installed on the supporting frame 21 by a fixing method like Luo, so that the water scraper 6, the oil scraper 3 and the auxiliary supporting sheet 22 are convenient for installation and disassembly, and easy for replacement.

[0049] The present invention further comprises a support frame 23 , which is used to install the conveying roller 13 , and the electric push rod 17 is installed on the support frame 23 .

[0050] See also Figures 1-6As an implementation of the oil storage tank 10 and the liquid storage tank 11: the oil storage tank 10 and the liquid storage tank 11 both include a box body 24, an interception filter 25 is provided inside the box body 24, and the box body 24 is divided into a liquid supply chamber 26 and a recovery chamber 27 by the interception filter 25, and the return pipe 12 and the guide plate 9 are both connected to the recovery chamber 27.

[0051] Specifically, the scraped lubricating oil and coolant flow back into the recovery chamber 27 through the corresponding return pipe 12 and the guide plate 9 respectively, wherein the recovery chamber 27 is connected to the liquid supply chamber 26 through the interception filter 25, so that the coolant and lubricating oil can seep into the liquid supply chamber 26, and the impurities carried will be intercepted in the recovery chamber 27, thereby improving the recovery and utilization effect of the lubricating oil and coolant.

[0052] See also Figures 1-6 As an implementation method of the rolling mill: a pump body 28 is provided on the oil storage tank 10 and the liquid storage tank 11, which are connected to the liquid supply cavity 26, and a liquid supply pipe 29 is provided between the output end of the pump body 28 and the corresponding oil injection pipe 4 and water injection pipe 7 respectively.

[0053] Start the pump body 28, and the lubricating oil and coolant in the oil storage tank 10 and the liquid storage tank 11 can be respectively extracted through the pump body 28, and transported to the water spray pipe 7 and the oil spray pipe 4 respectively, wherein the water spray pipe 7 and the oil spray pipe 4 are each provided with a plurality of atomizing nozzles, so that the lubricating oil and coolant can be evenly sprayed on the corresponding positions of the supporting roller 1 and the pressure roller 2 respectively.

[0054] In summary, when the overall equipment is in use:

[0055] The steel strip to be finished is conveyed by the conveying roller 13;

[0056] During this process, the electric push rod 17 is started. By controlling the extension and retraction of the electric push rod 17, the movement of the support column 14 can be controlled. The movement of the limit roller 15 can be controlled by the movement of the support column 14. The limit roller 15 can limit the position of the steel strip during the conveying process, thereby improving the stability and limiting performance of the steel strip during the conveying process. The steel strip to be finished is conveyed between the carrying roller 1 and the pressure roller 2. Here, the height of the conveying roller 13 is consistent with the height of the carrying roller 1.

[0057] Start the hydraulic cylinder 20, which can control the lifting of the mounting frame 19. The lifting and lowering of the mounting frame 19 can control the lifting and lowering of the pinch roller 2, thereby adjusting the distance between the pinch roller 2 and the carrier roller 1, thereby adjusting the pressure of the steel strip during finish rolling, so that the steel strip can achieve finish rolling when it slides between the pinch roller 2 and the carrier roller 1;

[0058] During this process, the pump body 28 is started, and the lubricating oil and coolant in the oil storage tank 10 and the liquid storage tank 11 can be respectively pumped out through the pump body 28 and transported to the water spray pipe 7 and the oil spray pipe 4 respectively. The water spray pipe 7 and the oil spray pipe 4 are both provided with a plurality of atomizing nozzles, so that the lubricating oil and coolant can be evenly sprayed on the corresponding positions of the carrier roller 1 and the pressure roller 2 respectively.

[0059] According to the conveying direction of the carrier roller 1 and the pressure roller 2, the working principle is as follows:

[0060] First, the coolant sprayed from the water spray pipe 7 contacts the pinch roller 2. After that, the pinch roller 2 sprayed with coolant contacts the wiper 6. The wiper 6 can scrape off the excess coolant to avoid contact between the coolant and the lubricating oil when the lubricating oil is sprayed later.

[0061] The scraped excess coolant flows to the return pipe 12 under the guidance of the guide groove pipe 8, and then flows back to the recovery chamber 27 in the liquid storage tank 11 through the return pipe 12, so as to realize the recycling of the excess coolant.

[0062] Afterwards, the external dry airflow is transported to the blowing pipe 5 and blown toward the pressing roller 2 through the blowing pipe 5, which can further achieve the blowing drying of the pressing roller 2 and improve the subsequent spraying effect of the lubricating oil;

[0063] Afterwards, the pinch roller 2 rotates to the position of the oil spray pipe 4. Under the action of the corresponding pump body 28 and the liquid supply pipe 29, the lubricating oil can be evenly sprayed on the surface of the pinch roller 2 through the oil spray pipe 4. Afterwards, the pinch roller 2 rotates to the position of the oil scraper 3 to scrape off excess lubricating oil. Afterwards, after sufficient lubrication, the pinch roller 2 rotates to the position of the steel strip to be finish-rolled, and cooperates with the carrier roller 1 to achieve finish rolling of the steel strip. Afterwards, the cooling and lubrication process of the pinch roller 2 is repeated.

[0064] The cooling and lubrication process of the carrier roller 1 is basically the same as that of the pressure roller 2. The difference is that the return of excess lubricating oil and cooling liquid in the carrier roller 1 is achieved through the guide plate 9, which guides the excess lubricating oil and cooling liquid into the corresponding recovery chamber 27 respectively.

[0065] In the present invention, the oil scraper 3, the water scraper 6 and the guide plate 9 are evenly attached to the corresponding carrier roller 1 and the pressure roller 2, the auxiliary carrier sheet 22 is close to the corresponding carrier roller 1 and the pressure roller 2 but not attached to it, and the carrier frame 21 is installed on the mounting frame 19, so that when the pressure roller 2 moves up and down, the corresponding oil scraper 3, the water scraper 6, the water spray pipe 7 and the oil spray pipe 4 and other structures will also move up and down accordingly;

[0066] Among them, the liquid supply pipe 29 and the return pipe 12 both adopt a retractable or movable adjustable hose structure. Among them, the pipeline connection positions in the utility model all adopt a detachable connection method with a joint. This is an existing well-known technology and will not be elaborated in this utility model.

[0067] In all the solutions mentioned above, the connection between two components can be selected according to actual conditions by welding, bolt and nut connection, bolt or screw connection or other well-known connection methods, which are not listed here one by one. In the above, whenever there is a fixed connection, welding is preferably considered. Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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.

[0068] In all the schemes mentioned above, those involving the operation of electrical components are controlled by the controller unless otherwise clearly described. Since the devices matched with the controller are commonly used devices, their control principles and line connections are all well-known and mature technologies. Their electrical connection relationships and specific circuit structures will not be elaborated here.

Claims

1. A rolling mill for finishing steel, comprising a bearing roller (1) and a pressure roller (2) located above the bearing roller (1), characterized in that: The feeding sides of the pressing roller (2) and the supporting roller (1) are both provided with an oil scraper (3), an oil spray pipe (4) is provided on the outside of the oil scraper (3), an air blowing pipe (5) is provided on the outside of the air blowing pipe (5), a water scraper (6) is provided on the outside of the water scraper (6), a water spray pipe (7) is provided on the outside of the water scraper (6), a guide groove pipe (8) is provided on the upper oil scraper (3) and the water scraper (6), and a guide plate (9) is provided on the outer side of the oil spray pipe (4) and the water spray pipe (7) at the lower side; It also includes an oil storage tank (10) and a liquid storage tank (11), and a return pipe (12) is provided between the output end of the guide groove pipe (8) and the corresponding oil storage tank (10) and liquid storage tank (11).

2. A rolling mill for finishing steel processing according to claim 1, characterized in that: The feed end of the carrier roller (1) is provided with multiple groups of conveying rollers (13), and a support column (14) is provided between two adjacent groups of conveying rollers (13). The top end of the support column (14) is provided with a limiting roller (15), and the bottom end is provided with a driving frame (16), and the outer side of the driving frame (16) is provided with an electric push rod (17).

3. A rolling mill for finishing steel according to claim 1, characterized in that: It also includes a frame (18), and the carrying roller (1) is rotatably mounted on the frame (18) via a bearing.

4. A rolling mill for finishing steel according to claim 3, characterized in that: A mounting frame (19) is provided at the inner top end of the frame (18), the pressing roller (2) is rotatably mounted on the mounting frame (19) via a bearing, and a hydraulic cylinder (20) is provided between the mounting frame (19) and the top end of the frame (18).

5. A rolling mill for finishing steel according to claim 4, characterized in that: A bearing frame (21) is provided on the mounting frame (19), an auxiliary bearing sheet (22) is provided on the bearing frame (21), and the oil scraper (3) and the water scraper (6) are respectively fixed to the corresponding bearing frame (21) by bolts passing through the corresponding auxiliary bearing sheets (22).

6. A rolling mill for finishing steel processing according to claim 2, characterized in that: It also includes a support frame (23), the support frame (23) is used to realize the installation of the conveying roller (13), and the electric push rod (17) is installed on the support frame (23).

7. A rolling mill for finishing steel according to any one of claims 1 to 6, characterized in that: The oil storage tank (10) and the liquid storage tank (11) both include a box body (24), an interception filter (25) is provided inside the box body (24), and the box body (24) is divided into a liquid supply chamber (26) and a recovery chamber (27) by the interception filter (25), and the return pipe (12) and the guide plate (9) are both connected to the recovery chamber (27).

8. A rolling mill for finishing steel according to claim 7, characterized in that: The oil storage tank (10) and the liquid storage tank (11) are both connected to the liquid supply cavity (26) and are provided with a pump body (28). Liquid supply pipes (29) are provided between the output ends of the pump body (28) and the corresponding oil spray pipes (4) and water spray pipes (7).

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