Three-roller modular rolling unit

Abstract

The invention provides a three-roller modular rolling unit and belongs to the technical field of rolling equipment.The three-roller modular rolling unit comprises a mounting base, a plurality of C-shaped three-roller mill assembling frame bodies are arranged on the mounting base, and a base frame body is arranged in the multiple C-shaped three-roller mill assembling frame bodies in a penetrating mode; the three-roller reducing and sizing precision rolling mill is detachably mounted on the C-shaped three-roller rolling mill assembly frame body through the base frame body; a driving part for driving a transmission shaft of the three-roller reducing and sizing precision rolling mill to rotate is arranged on the C-shaped three-roller rolling mill assembly frame body; a pinch roll device, a guide device and a leading-out guide cylinder are arranged on the base frame body. According to the three-roller modular rolling unit, through modular design, the number and layout of the three-roller reducing and sizing precision rolling mills on the whole three-roller modular rolling unit can be flexibly adjusted according to production requirements, the requirements of different customers for different passes of the unit can be met, the application range is wide, rapid replacement and maintenance can be achieved, and the production efficiency is improved. The rolling efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of rolling equipment, and in particular relates to a three-roller modular rolling unit. Background Art

[0002] In the existing technology, a variety of three-roll mills have been disclosed, such as the common three-roll steel plate mill, three-roll Lotter mill, etc. These mills are mainly used for the rolling process in metal processing, and their product structure is mainly composed of a machine base, three rolls, a transmission system, an adjustment mechanism, etc. The working principle of the three-roll mill is to achieve metal rolling through the relative movement of three rolls, and the axes of the three rolls are usually arranged at an angle of 120 degrees. However, the existing technology usually only discloses a separate three-roll mill, and does not disclose how to specifically set up a three-roll mill unit, so that rolling efficiency, production flexibility, and maintenance costs are still to be improved.

[0003] At present, there is no specific three-roll adjustable rolling equipment for the rolling of non-ferrous rare metals. The traditional two-roll mill or three-roll mill is mainly used, such as tungsten, tungsten alloy, molybdenum, molybdenum alloy, high-temperature alloy, titanium, titanium alloy, copper, copper alloy, aluminum and other rare metals. Due to the high melting point of rare metals, the narrow rolling temperature range, the large deformation resistance, the temperature rise during the rolling process is not quickly cooled down, and it is easy to burn (high internal temperature). Water cooling and other methods cannot be used for cooling during the rolling process. Compared with the traditional rolling of carbon steel and alloy steel, the rolling difficulty is higher. In order to ensure the dimensional accuracy and surface quality of the rolled products, the gold particles and metallographic structure of the rolled products are further improved to meet the requirements of the mechanical properties of non-ferrous rare metal materials for national defense, military industry, etc., a three-roll modular rolling unit is designed specifically for the rolling of non-ferrous rare metals. With high efficiency and energy saving as the design criteria, it aims to have higher dimensional accuracy of rolled products, higher mechanical properties of metallographic structure, faster adjustment, and wider application range. Summary of the invention

[0004] In view of the above problems in the prior art, the present invention aims to provide a three-roller modular rolling mill, which aims to improve rolling efficiency, production flexibility and reduce maintenance costs.

[0005] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention is as follows: a three-roll modular rolling mill unit is provided, which includes a mounting base, on which a plurality of C-type three-roll mill assembly frames are arranged along the length direction thereof, a base frame is arranged through the interior of the plurality of C-type three-roll mill assembly frames, and a single three-roll reducing and sizing precision rolling mill is detachably mounted on a single C-type three-roll mill assembly frame through the base frame;

[0006] Each C-type three-roller rolling mill assembly frame is provided with a driving component for driving the three transmission shafts of the three-roller sizing precision rolling mill to rotate; a transmission roller is provided in the middle of the three transmission shafts of each three-roller sizing precision rolling mill, and the three transmission rollers surround the rolling center, and the three transmission shafts are arranged in a Y shape, and the angle between the three transmission shafts is 120°;

[0007] The inlet end of the base frame is provided with a pinch roller device and a guide device, and the outlet end of the base frame is provided with a guide cylinder. The rolled bar billet enters the rolling center of multiple three-roller sizing precision rolling mills through the pinch roller device and the guide device.

[0008] A three-roller modular rolling mill unit in the present invention is mainly composed of components such as an installation base, multiple C-type three-roller rolling mill assembly frames and a base frame. Through modular design, the number and layout of three-roller sizing precision rolling mills on the entire three-roller modular rolling mill unit can be flexibly adjusted according to production needs. It can not only meet the needs of different customers for different passes of the unit, but also has a wide range of applications. It can also achieve rapid replacement and maintenance, thereby improving rolling efficiency.

[0009] Further, as a specific arrangement of the driving component, the driving component includes an upper driving source, a lower driving source and a horizontal driving source; the upper driving source and the lower driving source respectively include an upper reducer and a lower reducer, the upper reducer and the lower reducer are respectively arranged at the top and the bottom of the C-type three-roll rolling mill assembly frame, and the output shafts of the upper reducer and the lower reducer are both connected to a telescopic coupling, and the power output end of each of the telescopic couplings is provided with a spline sleeve connected to the end of the transmission shaft of the three-roller sizing precision rolling mill;

[0010] The horizontal driving source includes a middle reducer arranged in the middle of the C-type three-roller rolling mill assembly frame, the output shaft of the middle reducer is connected to a horizontal coupling, and the power output end of the horizontal coupling is provided with a spline sleeve connected to the end of the transmission shaft of the three-roller sizing precision rolling mill;

[0011] The output shafts of the upper and lower reducers are splined to the power output end of the telescopic coupling; the output shaft of the middle reducer is splined to the power output end of the horizontal coupling. The upper reducer, the lower reducer and the middle reducer can independently or synchronously drive the middle drive rollers of the three drive shafts of the three-roller sizing precision rolling mill to rotate, so as to realize the rolling of the rolling bar billet in the rolling center.

[0012] Furthermore, a pneumatic spring assembly is provided inside the output shaft of the upper reducer and the lower reducer, and the pneumatic spring assembly includes a pneumatic spring, the tail end of the pneumatic spring is fixedly arranged inside the output shaft of the upper reducer and the lower reducer through an adjusting sleeve, the middle section of the pneumatic spring is slidingly matched with the end of the output shaft of the upper reducer and the lower reducer through a guide end cover, the head end of the pneumatic spring is located outside the output shaft of the upper reducer and the lower reducer and is provided with a top head and a force transmission sleeve, the force transmission sleeve is in contact with the telescopic coupling, and the pneumatic spring pushes the spline sleeve at the power output end of the telescopic coupling to connect with the end of the transmission shaft of the three-roller sizing precision rolling mill.

[0013] The function of the pneumatic spring assembly is to always keep the spline sleeve at the power output end of the telescopic coupling connected to the end of the drive shaft of the three-roller sizing precision rolling mill, and to disengage during the transmission process to prevent the telescopic coupling from being disengaged from the end of the drive shaft of the three-roller sizing precision rolling mill.

[0014] Furthermore, each of the telescopic couplings is matched with a power clutch assembly; each of the power clutch assemblies includes a rotating rod, a middle portion of the rotating rod is rotatably connected to the interior of the C-type three-roll mill assembly frame through a rotating shaft, a shift fork with a semicircular structure is provided at one end of the rotating rod, the shift fork is rotatably connected to the outer wall of the telescopic coupling through a pin shaft, a telescopic cylinder is hinged at the other end of the rotating rod, a tail end of the telescopic cylinder is hinged to the interior of the C-type three-roll mill assembly frame through a pin shaft assembly, a position detection device is provided on the outside of each of the telescopic couplings, and each of the position detection devices includes a sensor bracket, and a position switch sensor is provided on the sensor bracket.

[0015] The function of the power clutch assembly is to realize the disengagement and connection between the telescopic coupling and the end of the transmission shaft of the three-roller sizing precision rolling mill, and to realize the rapid disengagement and connection between the three-roller star-shaped precision rolling mill and the driving component, which can meet the needs of rapid replacement of the rolling mill, and is simple to operate and highly efficient. The basic principle of the power clutch assembly is: when the telescopic oil cylinder is extended and retracted, it drives the rotating rod to rotate around its middle part, and then drives the shift fork to move up and down, and finally drives the telescopic coupling to move up and down relative to the transmission shaft direction of the three-roller sizing precision rolling mill, and realizes the disengagement and connection of the telescopic coupling; specifically, when the telescopic oil cylinder is depressurized, the pneumatic spring is ejected, and the telescopic coupling is connected to the rolling mill transmission shaft; when disengaging, the telescopic oil cylinder is pressurized and extended, driving the rotating rod to rotate around its middle part, and the rotating rotating rod drives the shift fork at its end to overcome the resistance of the pneumatic spring, so that the telescopic coupling is disengaged downward. The position detection device is used to collect the position information of the telescopic coupling in real time to determine the connection state between the telescopic coupling and the end of the transmission shaft of the three-roller sizing precision rolling mill.

[0016] Furthermore, a push-pull assembly is provided in the middle of each C-type three-roll rolling mill assembly frame, and each push-pull assembly includes a horizontally arranged fixed sleeve, a push-pull oil cylinder is fixed in each fixed sleeve, and the telescopic cylinder of each push-pull oil cylinder is fixedly connected with a push-pull hook for hooking the bottom of the three-roll sizing precision rolling mill. The function of the push-pull assembly is to realize the pushing and pulling of the three-roll sizing precision rolling mill in the C-type three-roll rolling mill assembly frame, so as to facilitate the rapid replacement of the three-roll sizing precision rolling mill. Specifically, the extension and retraction of the telescopic cylinder of the push-pull oil cylinder can drive the push-pull hook and the three-roll sizing precision rolling mill connected to the push-pull hook to be pushed and pulled in the C-type three-roll rolling mill assembly frame, and at the same time, the three-roll sizing precision rolling mill is locked.

[0017] Furthermore, a position sensor, a proximity sensor, a quick-insert positioning assembly and a positioning column are arranged in the middle part of each of the C-type three-roll rolling mill assembly frames; the position sensor and the proximity sensor are used to detect the position of the three-roll reducing and sizing precision rolling mill in the C-type three-roll rolling mill assembly frame; the quick-insert positioning assembly and the positioning column are used to fix the three-roll reducing and sizing precision rolling mill.

[0018] Furthermore, a plurality of installation stations are arranged on the base frame along the length direction of the installation base, and each of the installation stations matches one of the C-type three-roll rolling mill assembly frames; two slide rails are installed at intervals on each installation station, and the length direction of the two slide rails is in the same direction as the opening direction of the C-type three-roll rolling mill assembly frame; limiting blocks are arranged at the ends of the two slide rails away from the opening direction of the C-type three-roll rolling mill assembly frame; a two-way locking cylinder is arranged in the middle of the outer sides in the width direction of the two slide rails; a single three-roll sizing precision rolling mill is pulled to slide on the two slide rails by a push-pull assembly, and after the three-roll sizing precision rolling mill is fixedly connected to the quick-insert positioning assembly and the positioning column, the telescopic cylinder of the two-way locking cylinder extends out to press against the outer wall of the three-roll sizing precision rolling mill to limit the position of the three-roll sizing precision rolling mill on the base frame.

[0019] The two slide rails are used to carry a single three-roller sizing precision rolling mill, and cooperate with the push-pull assembly to realize the sliding of the single three-roller sizing precision rolling mill on the two slide rails, which is convenient for the assembly and disassembly of the single three-roller sizing precision rolling mill; the limit block is used to limit the position of the single three-roller sizing precision rolling mill on the slide rail to prevent the single three-roller sizing precision rolling mill from sliding out of the two slide rails.

[0020] Furthermore, a positioning pin assembly for fixedly connecting with the mounting base is provided at the bottom of each C-type three-roller rolling mill assembly frame.

[0021] Furthermore, the pinch roller device includes two pinch rollers for pinching the rolled bar stock, and the two pinch rollers are located between the guide device and the inlet end of the base frame; the guide device includes a support frame fixedly connected to the side wall of the inlet end of the base frame, and the support frame is provided with a guide groove and a guide cylinder, and the rolled bar stock enters from the inlet end of the guide groove, and the outlet end of the guide groove is connected to the inlet end of the guide cylinder, and the outlet end of the guide cylinder gradually decreases in diameter and is aligned between the two pinch rollers; the inlet and outlet ends of the base frame are both provided with hot metal detectors. The hot metal detector monitors the state of the rolled bar stock in real time to avoid the generation of scrap due to abnormal temperature or position. By reducing the scrap rate and improving production efficiency, it helps to reduce production costs and improve economic benefits.

[0022] Furthermore, the three transmission shafts of two adjacent three-roller sizing precision rolling mills are arranged alternately in a positive Y shape and an inverted Y shape, and the rolling center lines of multiple three-roller sizing precision rolling mills coincide. The purpose of such an arrangement is to greatly improve the ability of the three-roller sizing precision rolling mill to withstand rolling force and rolling torque.

[0023] The beneficial effects of the present invention are:

[0024] 1. The three-roll modular rolling mill of the present invention adopts a modular structure design, and the number and layout of the three-roll reducing and sizing precision rolling mills on the entire three-roll modular rolling mill can be flexibly adjusted according to production needs. It can not only meet the needs of different customers for different passes of the unit, but also has a wide range of applications. It can also achieve rapid replacement and maintenance, thereby improving rolling efficiency.

[0025] 2. A three-roll modular rolling mill unit in the present invention, by setting a power clutch assembly and a push-pull assembly, can realize the rapid disconnection and connection of the transmission shaft and the driving components in the three-roll star-shaped precision rolling mill, as well as the pushing and pulling of the entire three-roll star-shaped precision rolling mill in the C-type three-roll rolling mill assembly frame, so as to facilitate the rapid replacement of the three-roll reducing and sizing precision rolling mill.

[0026] 3. A three-roller modular rolling mill unit in the present invention is used to carry and lock the position of the three-roller star-shaped precision rolling mill by setting a base frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional structural schematic diagram of a three-roller modular rolling mill.

[0028] Figure 2 It is a schematic diagram of the assembly structure of the three-roller sizing precision rolling mill and the C-type three-roller rolling mill assembly frame.

[0029] Figure 3 Schematic diagram of the three-dimensional structure of the base frame Figure 1 .

[0030] Figure 4 Schematic diagram of the three-dimensional structure of the base frame Figure 2 .

[0031] Figure 5 This is an enlarged structural schematic diagram of the pneumatic spring assembly arranged inside the output shaft of the lower reducer.

[0032] Figure 6 It is a schematic diagram of the structure of the power clutch assembly.

[0033] Figure 7 Schematic diagram of the three-dimensional structure of the rotating rod.

[0034] Figure 8 It is an enlarged structural schematic diagram of the pinch roller device and the guide device.

[0035] Fig. 9 It is a schematic diagram of the three-dimensional structure of the C-type three-roller rolling mill assembly frame.

[0036] Fig.10 It is a schematic diagram of the enlarged structure of the push-pull component.

[0037] Among them, 1. Installation base; 2. C-type three-roller rolling mill assembly frame; 3. Base frame; 4. Three-roller sizing precision rolling mill; 5. Drive shaft; 6. Drive roller; 7. Rolling center; 8. Pinch roller device; 9. Guide device; 10. Guide cylinder; 11. Upper reducer; 12. Lower reducer; 13. Telescopic coupling; 14. Spline sleeve; 15. Middle reducer; 16. Horizontal coupling; 17. Pneumatic spring assembly; 18. Pneumatic spring; 19. Adjustment sleeve; 20. Guide end cover; 21. Head; 22. Power transmission sleeve; 23. Power clutch 1. Combination assembly; 24. Rotating rod; 25. Fork; 26. Telescopic cylinder; 27. Sensor bracket; 28. Position switch sensor; 29. ​​Push-pull assembly; 30. Fixed sleeve; 31. Push-pull cylinder; 32. Push-pull hook; 33. Position sensor; 35. Proximity sensor; 36. Quick-insert positioning assembly; 37. Positioning column; 38. Installation station; 39. Slide rail; 40. Limit block; 41. Two-way locking cylinder; 42. Positioning pin assembly; 43. Pinch roller; 44. Support frame; 45. Guide groove; 46. Guide cylinder; 47. Hot metal detector. DETAILED DESCRIPTION

[0038] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0039] like Figure 1 and Figure 2 As shown, the present invention provides a three-roll modular rolling mill unit, which includes a mounting base 1, on which a plurality of C-type three-roll mill assembly frames 2 are arranged along the length direction thereof. Specifically, a positioning pin assembly 42 for fixed connection with the mounting base 1 is arranged at the bottom of each of the C-type three-roll mill assembly frames 2, so as to realize the installation and fixation of the C-type three-roll mill assembly frames 2. A base frame 3 is arranged through the interior of the plurality of C-type three-roll mill assembly frames 2, and a single three-roll reducing and sizing precision rolling mill 4 is detachably mounted on a single C-type three-roll mill assembly frame 2 through the base frame 3.

[0040] In the above technical scheme, the three-roll modular rolling mill unit is mainly composed of components such as an installation base 1, multiple C-type three-roll rolling mill assembly frames 2 and a base frame 3. Through modular design, the number and layout of the three-roll reducing and sizing precision rolling mill 4 on the entire three-roll modular rolling mill unit can be flexibly adjusted according to production needs. It can not only meet the needs of different customers for different passes of the unit, but also has a wide range of applications. It can also achieve rapid replacement and maintenance to improve rolling efficiency.

[0041] Specifically, each C-type three-roller rolling mill assembly frame 2 is provided with a driving component for driving the three transmission shafts 5 of the three-roller sizing precision rolling mill 4 to rotate; a transmission roller 6 is provided in the middle of the three transmission shafts 5 of each three-roller sizing precision rolling mill 4, and the three transmission rollers 6 surround a rolling center 7, and the three transmission shafts 5 are arranged in a Y shape, and the angle between the three transmission shafts 5 is 120°. The three transmission shafts 5 of two adjacent three-roller sizing precision rolling mills 4 are arranged alternately in a positive Y shape and an inverted Y shape, and the rolling center 7 lines of multiple three-roller sizing precision rolling mills 4 overlap, and the purpose of such a setting is to greatly improve the ability of the three-roller sizing precision rolling mill 4 to withstand rolling force and rolling torque.

[0042] like Figure 3 and Figure 4 As shown, a pinch roller device 8 and a guide device 9 are provided at the inlet end of the base frame 3, and a guide cylinder 10 is provided at the outlet end of the base frame 3. The rolled bar stock enters the rolling center 7 of the three-roller sizing precision rolling mill 4 through the pinch roller device 8 and the guide device 9. The pinch roller device 8 and the guide device 9 are used to facilitate the rolled bar stock to better bite into the three-roller sizing precision rolling mill 4 for rolling.

[0043] Specifically, Figure 8As shown, the pinch roller device 8 includes two pinch rollers 43 for pinching the rolled bar stock, and the two pinch rollers 43 are located between the guide device 9 and the inlet end of the base frame 3; the guide device 9 includes a support frame 44 fixedly connected to the side wall of the inlet end of the base frame 3, and the support frame 44 is provided with a guide groove 45 and a guide cylinder 46, and the rolled bar stock enters from the inlet end of the guide groove 45, and the outlet end of the guide groove 45 is connected to the inlet end of the guide cylinder 46, and the outlet end of the guide cylinder 46 gradually decreases in diameter and is aligned between the two pinch rollers 43; the inlet end and the outlet end of the base frame 3 are both provided with a hot metal detector 47. The hot metal detector 47 monitors the state of the rolled bar stock in real time to avoid the generation of scrap due to abnormal temperature or position. By reducing the scrap rate and improving production efficiency, it helps to reduce production costs and improve economic benefits.

[0044] In this embodiment, if Figure 2 As shown, as a specific arrangement of the driving component, the driving component includes an upper driving source, a lower driving source and a horizontal driving source; the upper driving source and the lower driving source respectively include an upper reducer 11 and a lower reducer 12, the upper reducer 11 and the lower reducer 12 are respectively arranged at the top and the bottom of the C-type three-roll rolling mill assembly frame 2, the output shafts of the upper reducer 11 and the lower reducer 12 are connected to a telescopic coupling 13, and the power output end of each of the telescopic couplings 13 is provided with a spline sleeve 14 connected to the end of the transmission shaft 5 of the three-roll reducing and sizing precision rolling mill 4.

[0045] The horizontal driving source includes a middle reducer 15 arranged in the middle of the C-type three-roll rolling mill assembly frame 2, and the output shaft of the middle reducer 15 is connected to a horizontal coupling 16. The power output end of the horizontal coupling 16 is provided with a spline sleeve 14 connected to the end of the transmission shaft 5 of the three-roll reducing and sizing precision rolling mill 4.

[0046] The output shafts of the upper reducer 11 and the lower reducer 12 are splined to the power output end of the telescopic coupling 13; the output shaft of the middle reducer 15 is splined to the power output end of the horizontal coupling 16. The upper reducer 11, the lower reducer 12 and the middle reducer 15 can independently or synchronously drive the three transmission shafts 5 and the middle transmission rollers 6 of the three-roller sizing precision rolling mill 4 to rotate, so as to roll the rolling bar billet in the rolling center 7.

[0047] Preferably, but not limited to, Figure 2 and Figure 5As shown, a pneumatic spring assembly 17 is provided inside the output shaft of the upper reducer 11 and the lower reducer 12, and the pneumatic spring assembly 17 includes a pneumatic spring 18. The tail end of the pneumatic spring 18 is fixedly arranged inside the output shaft of the upper reducer 11 and the lower reducer 12 through an adjusting sleeve 19, and the middle section of the pneumatic spring 18 is slidably matched with the end of the output shaft of the upper reducer 11 and the lower reducer 12 through a guide end cover 20. The head end of the pneumatic spring 18 is located outside the output shaft of the upper reducer 11 and the lower reducer 12 and is provided with a top head 21 and a force transmission sleeve 22. The force transmission sleeve 22 is in contact with the telescopic coupling 13, and the pneumatic spring 18 pushes the spline sleeve 14 at the power output end of the telescopic coupling 13 to connect with the end of the transmission shaft 5 of the three-roller sizing precision rolling mill 4.

[0048] The function of the pneumatic spring assembly 17 is to always keep the spline sleeve 14 at the power output end of the telescopic coupling 13 connected to the end of the transmission shaft 5 of the three-roller reducing and sizing precision rolling mill 4, and to disengage during the transmission process, thereby preventing the telescopic coupling 13 from disengaging from the end of the transmission shaft 5 of the three-roller reducing and sizing precision rolling mill 4.

[0049] At the same time, if Figure 2 , Figure 6 and Figure 7 As shown, each of the telescopic couplings 13 is matched with a power clutch assembly 23; each of the power clutch assembly 23 includes a rotating rod 24, the middle part of the rotating rod 24 is rotatably connected to the inside of the C-type three-roll mill assembly frame 2 through a rotating shaft, a fork 25 with a semicircular structure is provided at one end of the rotating rod 24, and the fork 25 is rotatably connected to the outer wall of the telescopic coupling 13 through a pin shaft, and a telescopic cylinder 26 is hinged at the other end of the rotating rod 24, and the tail end of the telescopic cylinder 26 is hinged to the inside of the C-type three-roll mill assembly frame 2 through a pin shaft assembly, and a position detection device is provided on the outside of each of the telescopic couplings 13, and each of the position detection devices includes a sensor bracket 27, and a position switch sensor 28 is provided on the sensor bracket 27.

[0050] The function of the power clutch assembly 23 is to realize the disengagement and connection between the telescopic coupling 13 and the end of the transmission shaft 5 of the three-roller sizing precision rolling mill 4, and realize the rapid disengagement and connection between the three-roller star-shaped precision rolling mill and the driving component, which can meet the needs of rapid replacement of the rolling mill, and is simple to operate and efficient. The basic principle of the power clutch assembly 23 is: when the telescopic oil cylinder 26 is extended and retracted, it drives the rotating rod 24 to rotate around its middle part, and then drives the fork 25 to move up and down, and finally drives the telescopic coupling 13 to move up and down relative to the transmission shaft 5 of the three-roller sizing precision rolling mill 4, and realizes the disengagement and connection of the telescopic coupling 13; specifically, when the telescopic oil cylinder 26 is depressurized, the pneumatic spring 18 is ejected, and the telescopic coupling 13 is connected to the rolling mill transmission shaft 5; when disengaging, the telescopic oil cylinder 26 is pressurized and extended, driving the rotating rod 24 to rotate around its middle part, and the rotating rotating rod 24 drives the fork 25 at its end to overcome the resistance of the pneumatic spring 18, so that the telescopic coupling 13 is disengaged downward. The position detection device is used to collect the position information of the telescopic coupling 13 in real time to determine the connection state between the telescopic coupling 13 and the end of the transmission shaft 5 of the three-roller reducing and sizing precision rolling mill 4 .

[0051] like Figure 2 and Fig.10 As shown, a push-pull assembly 29 is provided in the middle of each C-type three-roller rolling mill assembly frame 2, and each push-pull assembly 29 includes a horizontally arranged fixed sleeve 30, and a push-pull oil cylinder 31 is fixed in each fixed sleeve 30, and the telescopic cylinder of each push-pull oil cylinder 31 is fixedly connected with a push-pull hook 32 for hooking the bottom of the three-roller sizing precision rolling mill 4. The function of the push-pull assembly 29 is to realize the push-pull and pull-out of the three-roller sizing precision rolling mill 4 in the C-type three-roller rolling mill assembly frame 2, so as to facilitate the rapid replacement of the three-roller sizing precision rolling mill 4. Specifically, the telescopic cylinder of the push-pull oil cylinder 31 can drive the push-pull hook 32 and the three-roller sizing precision rolling mill 4 connected to the push-pull hook 32 to be pushed and pulled out in the C-type three-roller rolling mill assembly frame 2, and at the same time, the three-roller sizing precision rolling mill 4 is locked.

[0052] like Fig. 9 As shown, a position sensor 33, a proximity sensor 35, a quick-insert positioning component 36 and a positioning column 37 are provided in the middle of each C-type three-roll rolling mill assembly frame 2; the position sensor 33 and the proximity sensor 35 are used to detect the position of the three-roll reducing and sizing precision rolling mill 4 in the C-type three-roll rolling mill assembly frame 2; the quick-insert positioning component 36 and the positioning column 37 are used to fix the three-roll reducing and sizing precision rolling mill 4.

[0053] By setting up the power clutch assembly 23 and the push-pull assembly 29, the transmission shaft 5 in the three-roller star-shaped precision rolling mill can be quickly disconnected and connected with the driving components, and the entire three-roller star-shaped precision rolling mill can be pushed and pulled out in the C-type three-roller rolling mill assembly frame 2, which facilitates the rapid replacement of the three-roller sizing precision rolling mill 4.

[0054] like Figure 3 As shown, as a specific arrangement of the base frame 3, a plurality of installation stations 38 are arranged on the base frame 3 along the length direction of the installation base 1, and each of the installation stations 38 matches one of the C-type three-roll mill assembly frame bodies 2; two slide rails 39 are installed at intervals on each installation station 38, and the length direction of the two slide rails 39 is in the same direction as the opening direction of the C-type three-roll mill assembly frame body 2; the ends of the two slide rails 39 away from the opening direction of the C-type three-roll mill assembly frame body 2 are A limit block 40 is provided at the part; a bidirectional locking cylinder 41 is provided at the middle part of the outer side of the two slide rails 39 in the width direction; a single three-roller sizing precision rolling mill 4 is pulled by the push-pull assembly 29 to slide on the two slide rails 39, and after the three-roller sizing precision rolling mill 4 is fixedly connected with the quick-insert positioning assembly 36 and the positioning column 37, the telescopic cylinder of the bidirectional locking cylinder 41 extends out to press against the outer wall of the three-roller sizing precision rolling mill 4, limiting the position of the three-roller sizing precision rolling mill 4 on the base frame 3.

[0055] The two slide rails 39 are used to carry a single three-roller precision reducing and sizing rolling mill 4, and cooperate with the push-pull assembly 29 to realize the sliding of the single three-roller precision reducing and sizing rolling mill 4 on the two slide rails 39, thereby facilitating the assembly and disassembly of the single three-roller precision reducing and sizing rolling mill 4; the limit block 40 is used to limit the position of the single three-roller precision reducing and sizing rolling mill 4 on the slide rails 39 to prevent the single three-roller precision reducing and sizing rolling mill 4 from sliding out of the two slide rails 39.

[0056] To sum up, a three-roll modular rolling mill in the present invention adopts a modular structure design, and the number and layout of the three-roll reducing and sizing precision rolling mill 4 on the entire three-roll modular rolling mill can be flexibly adjusted according to production needs. It can not only meet the needs of different customers for different passes of the unit, but also has a wide range of applications. It can also achieve rapid replacement and maintenance, thereby improving rolling efficiency.

Claims

1. A three-roller modular rolling mill, characterized in that: It comprises a mounting base, on which a plurality of C-type three-roller rolling mill assembly frames are arranged along the length direction thereof, a base frame is arranged inside the plurality of C-type three-roller rolling mill assembly frames, and a single three-roller sizing precision rolling mill is detachably mounted on the single C-type three-roller rolling mill assembly frame through the base frame; Each C-type three-roller rolling mill assembly frame is provided with a driving component for driving the three transmission shafts of the three-roller sizing precision rolling mill to rotate; a transmission roller is provided in the middle of the three transmission shafts of each three-roller sizing precision rolling mill, and the three transmission rollers surround the rolling center, and the three transmission shafts are arranged in a Y shape, and the angle between the three transmission shafts is 120°; The inlet end of the base frame is provided with a pinch roller device and a guide device, and the outlet end of the base frame is provided with a guide cylinder. The rolled bar billet enters the rolling center of multiple three-roller sizing precision rolling mills through the pinch roller device and the guide device.

2. The three-roller modular rolling mill according to claim 1, characterized in that: The driving component includes an upper driving source, a lower driving source and a horizontal driving source; the upper driving source and the lower driving source respectively include an upper reducer and a lower reducer, the upper reducer and the lower reducer are respectively arranged at the top and the bottom of the C-type three-roller rolling mill assembly frame, and the output shafts of the upper reducer and the lower reducer are both connected to a telescopic coupling, and the power output end of each telescopic coupling is provided with a spline sleeve connected to the end of the transmission shaft of the three-roller sizing precision rolling mill; The horizontal driving source includes a middle reducer arranged in the middle of the C-type three-roller rolling mill assembly frame, the output shaft of the middle reducer is connected to a horizontal coupling, and the power output end of the horizontal coupling is provided with a spline sleeve connected to the end of the transmission shaft of the three-roller sizing precision rolling mill; The output shafts of the upper reducer and the lower reducer are spline-connected to the power output end of the telescopic coupling; the output shaft of the middle reducer is spline-connected to the power output end of the horizontal coupling.

3. The three-roller modular rolling mill according to claim 2, characterized in that: A pneumatic spring assembly is arranged inside the output shaft of the upper reducer and the lower reducer, and the pneumatic spring assembly includes a pneumatic spring. The tail end of the pneumatic spring is fixedly arranged inside the output shaft of the upper reducer and the lower reducer through an adjusting sleeve. The middle section of the pneumatic spring is slidably matched with the end of the output shaft of the upper reducer and the lower reducer through a guide end cover. The head end of the pneumatic spring is located outside the output shaft of the upper reducer and the lower reducer and is provided with a top head and a force transmission sleeve. The force transmission sleeve is in contact with the telescopic coupling. The pneumatic spring pushes the spline sleeve at the power output end of the telescopic coupling to connect with the end of the transmission shaft of the three-roller sizing precision rolling mill.

4. The three-roller modular rolling mill according to claim 3, characterized in that: Each of the telescopic couplings is matched with a power clutch assembly; each of the power clutch assemblies includes a rotating rod, the middle part of which is rotatably connected to the inside of the C-type three-roll mill assembly frame through a rotating shaft, a shift fork with a semicircular structure is provided at one end of the rotating rod, and the shift fork is rotatably connected to the outer wall of the telescopic coupling through a pin shaft, and a telescopic cylinder is hinged at the other end of the rotating rod, and the tail end of the telescopic cylinder is hinged to the inside of the C-type three-roll mill assembly frame through a pin shaft assembly; a position detection device is provided on the outside of each of the telescopic couplings, and each of the position detection devices includes a sensor bracket, and a position switch sensor is provided on the sensor bracket.

5. The three-roller modular rolling mill according to claim 1, characterized in that: A push-pull assembly is arranged in the middle of each C-type three-roll rolling mill assembly frame, and each push-pull assembly includes a horizontally arranged fixed sleeve, and a push-pull oil cylinder is fixed in each fixed sleeve, and the telescopic cylinder of each push-pull oil cylinder is fixedly connected with a push-pull hook for hooking the bottom of the three-roll reducing and sizing precision rolling mill.

6. The three-roller modular rolling mill according to claim 1, characterized in that: A position sensor, a proximity sensor, a quick-insert positioning assembly and a positioning column are arranged in the middle of each C-type three-roll rolling mill assembly frame; the position sensor and the proximity sensor are used to detect the position of the three-roll reducing and sizing precision rolling mill in the C-type three-roll rolling mill assembly frame; the quick-insert positioning assembly and the positioning column are used to fix the three-roll reducing and sizing precision rolling mill.

7. The three-roller modular rolling mill according to claim 6, characterized in that: A plurality of installation stations are arranged on the base frame along the length direction of the installation base, and each of the installation stations matches one of the C-type three-roll rolling mill assembly frames; two slide rails are installed at intervals on each installation station, and the length direction of the two slide rails is in the same direction as the opening direction of the C-type three-roll rolling mill assembly frame; limit blocks are arranged at the ends of the two slide rails away from the opening direction of the C-type three-roll rolling mill assembly frame; a two-way locking cylinder is arranged in the middle of the outer sides in the width direction of the two slide rails; a single three-roll sizing precision rolling mill is pulled to slide on the two slide rails by a push-pull assembly, and after the three-roll sizing precision rolling mill is fixedly connected to the quick-insert positioning assembly, the telescopic cylinder of the two-way locking cylinder extends out to press against the outer wall of the three-roll sizing precision rolling mill to limit the position of the three-roll sizing precision rolling mill on the base frame.

8. The three-roller modular rolling mill according to claim 1, characterized in that: The bottom of each C-type three-roller rolling mill assembly frame is provided with a positioning pin assembly for fixed connection with the mounting base.

9. The three-roller modular rolling mill according to any one of claims 1 to 8, characterized in that: The pinch roller device includes two pinch rollers for pinching the rolled bar blank, and the two pinch rollers are located between the guide device and the entrance end of the base frame; the guide device includes a support frame fixedly connected to the side wall of the entrance end of the base frame, and the support frame is provided with a guide groove and a guide cylinder, and the rolled bar blank enters from the entrance end of the guide groove, and the exit end of the guide groove is connected to the entrance end of the guide cylinder, and the diameter of the exit end of the guide cylinder gradually decreases and is aligned between the two pinch rollers; the entrance end and the exit end of the base frame are both provided with hot metal detectors.

10. The three-roller modular rolling mill according to any one of claims 1 to 8, characterized in that: The three transmission shafts of two adjacent three-roller sizing precision rolling mills are alternately arranged in a positive Y shape and an inverted Y shape, and the rolling center lines of multiple three-roller sizing precision rolling mills coincide.

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