Square tube rolling mill
By using preheating boxes, spiral heaters and segmented ring heaters in square pipe rolling mills, combined with the design of multiple sets of temperature sensors, the problem of unstable temperature in the round tube during the rolling process is solved, uniform heating of the round tube and real-time temperature monitoring is achieved, and the rolling effect and product quality are improved.
Patent Information
- Application Number
- CN202421394301.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-06-18
AI Technical Summary
When the existing square pipe rolling mills roll the round tubes, they cannot continuously and stably heat them up, and they cannot detect the round tube temperature in real time. This will lead to layering and deformation of the rolling process when the temperature is too low, which will affect the product pass rate.
A square tube rolling mill is designed, which uses a preheating box and a spiral heater for preheating. The circular tube is detected and heated in real time through sectioned ring heaters and multiple sets of temperature sensors to ensure the stability of the circular tube during the rolling process.
Through this design, the circular tube can maintain uniform and stable heating during the rolling process, avoid rolling layering and deformation caused by too low temperature, improve the pass rate and quality of the product, and at the same time save energy and environmental protection.
Smart Images
Figure CN222830339U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of square tube rolling, in particular to a square tube rolling mill. Background Art
[0002] A rolling mill is a device that realizes the metal rolling process. It generally refers to the equipment that completes the entire process of rolled material production. A round tube square tube rolling mill refers to a device that rolls round tubes into square tubes by placing them into a rolling mill. The square tube rolling mill is mainly composed of rollers, frames, transmission devices and other devices.
[0003] When rolling round tubes, the existing square tube rolling mill needs to heat the round tubes before rolling. Although it can heat the round tubes to facilitate rolling processing, some round tubes to be processed are long, and the existing heating equipment cannot continuously and stably heat the round tubes during rolling, and cannot detect the temperature of the round tubes in real time during the rolling process. As a result, when the temperature of the round tubes is too low, especially for composite tubes (such as titanium-aluminum composite tubes), the round tubes will cause rolling stratification and deformation, affecting the qualified rate of rolled products. For this reason, we provide a square tube rolling mill to solve this problem. Utility Model Content
[0004] The purpose of the utility model is to solve the above technical problems and provide a square tube rolling mill.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a square tube rolling mill, comprising a base frame, a rolling mill shell is installed on the upper end of the base frame, ten groups of grooves are equidistantly arranged on both sides of the rolling mill shell, and the inner cavities of every two grooves are jointly installed with a rolling assembly, and the upper ends of the grooves are provided with a fixing assembly, and the fixing assembly is connected to the rolling assembly, a preheating box is welded on the left side of the base frame, and a spiral heater is installed in the inner cavity of the preheating box, and a transportation mechanism is provided on one side of the preheating box and the rolling mill shell, and two round tubes are provided on the upper end of the transportation mechanism, and one end of the round tubes passes through the spiral heater and extends to the interior of the rolling assembly, and a circular ring heater is equidistantly installed at the bottom end of the inner cavity of the rolling mill shell.
[0006] A further preferred technical solution is that the rolling assembly includes two first bearing seats installed in the inner cavity of the groove, the two first bearing seats are connected to the first roller shaft for rotation together, the outer sides of the first roller shafts are installed with rack drive wheels, the inner cavity of the groove is provided with a second bearing seat, the second bearing seats are connected to the second roller shaft for rotation together, the outer sides of the second roller shaft and the first roller shaft are symmetrically installed with rolling wheels, the two round tubes are respectively located between the two rolling wheels, and the outer sides of the second roller shaft and the first roller shaft are installed with gears that mesh with each other.
[0007] A further preferred technical solution is that the fixing assembly includes a fixing strip installed at the upper end of the rolling mill shell, the fixing strip is located at the upper end of the groove, the middle part of the fixing strip is threaded with a fixing bolt, the lower end of the fixing bolt is rotatably connected to the second bearing seat, and the width of the second bearing seat matches the inner cavity size of the groove.
[0008] A further preferred technical solution is that eleven groups of brackets are equidistantly installed in the inner cavity of the rolling mill shell, and temperature sensors are symmetrically installed on the upper ends of ten of the groups of brackets, and the lower ends of the temperature sensors pass through the brackets and extend to the bottom thereof.
[0009] A further preferred technical solution is that the annular heaters are provided in ten groups, and the annular heaters are all located below the temperature sensor.
[0010] A further preferred technical solution is that the transport mechanism includes a fixed frame arranged on the outside of the rolling mill shell and the preheating box, the upper end of the fixed frame is symmetrically installed with track bars, the upper end of the track bars is equidistantly screwed with mounting seats, every two of the mounting seats are connected to a support shaft for common rotation, and the outer side of the support shaft is symmetrically installed with limiting rollers, and the round tube is located at the upper end of the limiting roller.
[0011] Compared with the prior art, the utility model has the following beneficial effects: by designing a preheating box and installing a spiral heater in the preheating box, it is convenient to preheat the round tube to a degree, and by setting up annular heaters in sections, and both the spiral heater and the annular heater are annular in shape, it is convenient for the round tube to be heated more evenly and stably, and a temperature sensor corresponding to the position is set above the annular heater, so that the temperature of the round tube entering the temperature monitoring position is conveniently detected by the temperature sensor, and when the temperature does not meet the rolling requirement, the annular heater is used to heat the round tube to the rolling temperature, and the rolling is carried out in 10 passes, with an annular heater in front of each roller for heating, so as to ensure the temperature of the round tube and prevent the round tube from being delaminated and deformed due to too low temperature during rolling, effectively improving the rolling effect of the square tube, increasing the quality of the product, and increasing the qualified rate of the product, and by designing multiple groups of temperature sensors for segmented temperature detection, continuous heating from the beginning to the end of rolling is avoided, which is convenient for energy saving and environmental protection and improves the use effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a square tube rolling mill proposed by the utility model;
[0013] Figure 2 It is a partial three-dimensional structural schematic diagram of a square tube rolling mill proposed by the utility model;
[0014] Figure 3 This is a schematic diagram of the top view of the structure of a square tube rolling mill proposed by the utility model;
[0015] Figure 4 This is a front view structural schematic diagram of a square tube rolling mill proposed by the utility model;
[0016] Figure 5 The utility model is a schematic diagram of the three-dimensional structure of a transportation mechanism of a square tube rolling mill.
[0017] In the figure: base frame 1, rolling mill shell 2, preheating box 3, transportation mechanism 4, fixed frame 41, track bar 42, mounting seat 43, support shaft 44, limiting roller 45, round tube 5, spiral heater 6, groove 7, rolling assembly 8, first bearing seat 81, first roller shaft 82, rack drive wheel 83, second bearing seat 84, second roller shaft 85, gear 86, rolling roller wheel 87, fixing assembly 9, fixing bar 91, fixing bolt 92, ring heater 10, bracket 11, temperature sensor 12. DETAILED DESCRIPTION
[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0019] Example
[0020] Reference Figure 1-5 As shown, a square tube rolling mill comprises a base frame 1, a rolling mill shell 2 is installed at the upper end of the base frame 1, ten groups of grooves 7 are equidistantly arranged on both sides of the rolling mill shell 2, a rolling assembly 8 is commonly installed in the inner cavity of each two grooves 7, the rolling assembly 8 comprises two first bearing seats 81 installed in the inner cavity of the groove 7, a first roller 82 is commonly rotatably connected between the two first bearing seats 81, a rack transmission wheel 83 is installed on the outer side of the first roller 82, a second bearing seat 84 is arranged in the inner cavity of the groove 7, a second roller 85 is commonly rotatably connected between the second bearing seats 84, rolling rollers 87 are symmetrically installed on the outer sides of the second roller 85 and the first roller 82, two round tubes 5 are respectively located between the two rolling rollers 87, and mutually meshing gears 86 are installed on the outer sides of the second roller 85 and the first roller 82.
[0021] A transmission belt is put on the outer side of multiple rack drive wheels 83, and a rack drive wheel 83 is also installed on the output end of an external driving motor and is connected with the transmission belt, so that the rack drive wheel 83 is driven to rotate through the output end of the driving motor, and the external rack drive wheel 83 drives multiple rack drive wheels 83 and the first roller 82 in the inner cavity to rotate through the transmission belt, and the first roller 82 drives another gear 86 meshing with it and the second roller 85 in the inner cavity to rotate through the outer gear 86, and the second roller 85 and the first roller 82 respectively drive the rollers 87 on their outer sides to move in opposite directions, thereby stably pressing the round tube 5 into a square tube.
[0022] A fixing assembly 9 is provided at the upper end of the groove 7, and the fixing assembly 9 is connected to the rolling assembly 8. The fixing assembly 9 includes a fixing bar 91 installed at the upper end of the rolling mill housing 2, and the fixing bar 91 is located at the upper end of the groove 7. The middle part of the fixing bar 91 is screwed with a fixing bolt 92, and the lower end of the fixing bolt 92 is rotatably connected to the second bearing seat 84. The width of the second bearing seat 84 matches the size of the inner cavity of the groove 7.
[0023] By screwing the fixing bolt 92 in the middle of the fixing bar 91 and rotating it, the lower end of the fixing bolt 92 moves downward, and the lower end of the fixing bolt 92 drives the second bearing seat 84 to move downward, so that the second bearing seat 84 can synchronously drive the second roller 85 to move downward until the gear 86 on the outside of the second roller 85 is meshed with the gear 86 on the outside of the first roller 82, so that the rolling assembly 8 can run more stably and firmly during rolling operation, thereby improving the use effect.
[0024] A preheating box 3 is welded on the left side of the base frame 1, a spiral heater 6 is installed in the inner cavity of the preheating box 3, and an annular heater 10 is equidistantly installed at the bottom end of the inner cavity of the rolling mill shell 2. Eleven groups of brackets 11 are equidistantly installed in the inner cavity of the rolling mill shell 2, and temperature sensors 12 are symmetrically installed at the upper ends of ten groups of brackets 11. The lower ends of the temperature sensors 12 pass through the brackets 11 and extend to the bottom thereof. Ten groups of annular heaters 10 are provided, and the annular heaters 10 are all located below the temperature sensors 12.
[0025] The round tube 5 is preheated to 400 degrees by the spiral heater 6. When one end of the round tube 5 passes through the spiral heater 6 and enters the inner cavity of the rolling mill housing 2, the temperature of the position of the round tube 5 is detected by two sets of temperature sensors 12 at the lower end of a bracket 11. When the temperature of the round tube 5 at this position meets the rolling requirement, the round tube 5 is moved forward. If the temperature of the round tube 5 at this position does not meet the rolling requirement, the circular ring heater 10 is started to heat the position of the round tube 5 at this position, and the temperature sensor 12 is used for real-time monitoring. When the temperature meets the rolling requirement, the round tube 5 continues to move between the second roller 85 of the rolling assembly 8 and the roller 87 outside the first roller 82. When the rolling assembly 8 is working, the two rollers 87 corresponding to the positions roll the round tube 5 into a square tube shape, and as the round tube 5 continues to move toward the right side of the rolling mill shell 2, when one end of the round tube 5 enters the monitoring area of the next temperature sensor 12, the rolling work of the rolling assembly 8 is stopped, and the above-mentioned temperature detection and heating work is repeated, and then rolling is carried out in 10 passes. There is a ring heater 10 in front of each roller 87 for heating to ensure the temperature of the round tube 5 and prevent the round tube 5 from being delaminated and deformed due to low temperature during rolling. By designing multiple groups of temperature sensors 12 for segmented temperature detection, continuous heating from the beginning to the end of rolling is avoided, which is energy-saving and environmentally friendly and improves the use effect.
[0026] A transport mechanism 4 is provided on one side of the preheating box 3 and the rolling mill housing 2. Two round tubes 5 are provided on the upper end of the transport mechanism 4. One end of the round tube 5 passes through the spiral heater 6 and extends to the inside of the rolling assembly 8. The transport mechanism 4 includes a fixed frame 41 arranged on the outside of the rolling mill housing 2 and the preheating box 3. Track bars 42 are symmetrically installed on the upper end of the fixed frame 41. The upper end of the track bar 42 is equidistantly screwed with mounting seats 43. Every two mounting seats 43 are rotatably connected to a support shaft 44. Limit rollers 45 are symmetrically installed on the outer side of the support shaft 44. The round tube 5 is located at the upper end of the limit roller 45.
[0027] By placing the two round tubes 5 on the upper ends of the two limiting rollers 45 outside the supporting shaft 44 of the transport mechanism 4 on the left side of the preheating box 3, and pushing the round tubes 5 into the preheating box 3, and passing through the spiral heater 6 into the rolling mill housing 2, it is convenient to roll the round tubes 5 into square tubes through the rolling assembly 8, and then support the square tubes through the limiting rollers 45 of the transport mechanism 4 on the right side of the rolling mill housing 2, so that when the square tubes are gradually pushed outward, the limiting rollers 45 support and roll them at the same time, so as to facilitate the flexible movement and transportation of the square tubes and the convenience of the operators to collect the materials.
[0028] Working principle: The utility model is controlled and connected with the spiral heater 6, the annular heater 10, the temperature sensor 12 and the external driving motor through an external controller, and a transmission belt is put on the outside of multiple rack transmission wheels 83, and a rack transmission wheel 83 is also installed through the output end of the external driving motor, and is connected with the transmission belt, and then the rack transmission wheel 83 is driven to rotate through the output end of the driving motor, and the external rack transmission wheel 8 drives multiple rack transmission wheels 83 and the first roller 82 of the inner cavity to rotate through the transmission belt, and the first roller 82 of the inner cavity is driven to rotate through the transmission belt. A roller 82 drives another gear 86 meshing with it and a second roller 85 in its inner cavity to rotate through an outer gear 86, and the second roller 85 and the first roller 82 respectively drive the roller wheels 87 on their outer sides to move in opposite directions, thereby rolling the round tube 5. The round tube 5 is first preheated to 400 degrees by the spiral heater 6 in the preheating box 3. When one end of the round tube 5 passes through the spiral heater 6 and enters the inner cavity of the rolling mill housing 2, the temperature of the position of the round tube 5 at this point is detected by two sets of temperature sensors 12 at the lower end of a bracket 11. When the round tube 5 passes through the spiral heater 6 and enters the inner cavity of the rolling mill housing 2, the temperature of the round tube 5 at this point is detected by two sets of temperature sensors 12 at the lower end of a bracket 11. When the temperature at the position of the round tube 5 reaches the rolling requirement, the round tube 5 is moved forward continuously. If the temperature at the position of the round tube 5 does not reach the rolling requirement, the round tube 5 is heated at the position of the round tube 5 by starting the circular heater 10, and the temperature sensor 12 is used for real-time monitoring. When the temperature reaches the rolling requirement, the round tube 5 is moved further to between the second roller 85 of the rolling assembly 8 and the roller 87 outside the first roller 82. When the rolling assembly 8 is working, the rollers 87 at the two corresponding positions roll the round tube 5 into a square tube shape, and as the round tube 5 is heated, the round tube 5 is heated. The tube 5 continues to move toward the right side of the rolling mill housing 2. When one end of the round tube 5 enters the monitoring area of the next temperature sensor 12, the rolling work of the rolling assembly 8 is stopped, and the above-mentioned temperature detection and heating work is repeated. Then, the rolling is carried out in 10 passes. A circular heater 10 is arranged in front of each roller 87 for heating to ensure the temperature of the round tube 5 and prevent the round tube 5 from being delaminated and deformed during rolling due to too low temperature. In addition, by designing multiple groups of temperature sensors 12 for segmented temperature detection, continuous heating from the beginning to the end of rolling is avoided, which is energy-saving and environmentally friendly and improves the use effect.
[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A square tube rolling mill, comprising a base frame (1), characterized in that: A rolling mill shell (2) is installed at the upper end of the base frame (1), and ten groups of grooves (7) are equidistantly arranged on both sides of the rolling mill shell (2). A rolling assembly (8) is installed in the inner cavities of every two of the grooves (7). A fixing assembly (9) is provided at the upper end of each groove (7), and the fixing assembly (9) is connected to the rolling assembly (8). A preheating box (3) is welded on the left side of the base frame (1), and a spiral heater (6) is installed in the inner cavity of the preheating box (3). A transport mechanism (4) is provided on one side of the preheating box (3) and the rolling mill shell (2). Two round tubes (5) are provided at the upper end of the transport mechanism (4), and one end of each round tube (5) passes through the spiral heater (6) and extends to the interior of the rolling assembly (8). A circular ring heater (10) is equidistantly installed at the bottom end of the inner cavity of the rolling mill shell (2).
2. A square tube rolling mill according to claim 1, characterized in that: The rolling assembly (8) comprises two first bearing seats (81) installed in the inner cavity of the groove (7), the two first bearing seats (81) are connected to the first roller shaft (82) in a rotatable manner, the outer side of each of the first roller shafts (82) is installed with a rack transmission wheel (83), the inner cavity of each of the grooves (7) is provided with a second bearing seat (84), the second bearing seats (84) are connected to the second roller shaft (85) in a rotatable manner, the outer sides of the second roller shaft (85) and the first roller shaft (82) are symmetrically installed with rolling wheels (87), the two round tubes (5) are respectively located between the two rolling wheels (87), and the outer sides of the second roller shaft (85) and the first roller shaft (82) are installed with gears (86) that mesh with each other.
3. A square tube rolling mill according to claim 2, characterized in that: The fixing assembly (9) comprises a fixing bar (91) mounted on the upper end of the rolling mill housing (2), the fixing bar (91) being located at the upper end of the groove (7), the middle of the fixing bar (91) being screwed with a fixing bolt (92), the lower end of the fixing bolt (92) being rotatably connected to the second bearing seat (84), the width of the second bearing seat (84) matching the size of the inner cavity of the groove (7).
4. A square tube rolling mill according to claim 1, characterized in that: Eleven groups of brackets (11) are equidistantly installed in the inner cavity of the rolling mill shell (2), and temperature sensors (12) are symmetrically installed at the upper ends of ten groups of the brackets (11), and the lower ends of the temperature sensors (12) penetrate the brackets (11) and extend to the bottom thereof.
5. A square tube rolling mill according to claim 4, characterized in that: Ten groups of the annular heaters (10) are provided, and the annular heaters (10) are all located below the temperature sensor (12).
6. A square tube rolling mill according to claim 1, characterized in that: The transport mechanism (4) comprises a fixed frame (41) arranged outside the rolling mill housing (2) and the preheating box (3), the upper end of the fixed frame (41) is symmetrically mounted with a track bar (42), the upper end of the track bar (42) is equidistantly screwed with a mounting seat (43), every two mounting seats (43) are rotatably connected to a support shaft (44), the outer side of the support shaft (44) is symmetrically mounted with a limiting roller (45), and the round tube (5) is located at the upper end of the limiting roller (45).