Sectional type direct-drive inner-cooling rolling mill with centering assembly

Abstract

The sectional type direct-drive inner-cooling rolling mill comprises a control base, one side of the upper end of the control base is fixedly connected with a centering device body, the other side of the upper end of the control base is provided with a distance adjusting mechanism in a positioning mode, and the upper end of the distance adjusting mechanism is fixedly connected with the direct-drive inner-cooling rolling mill. According to the sectional type direct-drive inner-cooling rolling mill with the centering assembly, flexible adjustment can be conducted according to the requirements of different materials and product specifications through the arranged distance adjusting mechanism, so that the rolling mill adapts to various production technologies, the flexibility of a production line is improved, the heat dissipation effect can be enhanced through the arranged cooling and heat dissipation mechanism, and the service life of the rolling mill is prolonged. The good heat dissipation effect can keep the rolling mill to operate within the optimal working temperature range, the situation that the working efficiency is reduced due to the too high temperature is avoided, the situation that parts are damaged due to the fact that the rolling mill is too hot is prevented, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of direct-driven internally-cooled rolling mills, in particular to a segmented direct-driven internally-cooled rolling mill with a centering component. Background Art

[0002] The direct-drive internally cooled rolling mill is an advanced metal rolling equipment designed to improve transmission efficiency, simplify structure, reduce noise and pollution, and improve product precision. This direct-drive internally cooled rolling mill has the advantages of high transmission efficiency, compact structure, low noise, no pollution, and high degree of automation. It is suitable for high-precision rolling processing of various metal materials.

[0003] When the common segmented direct-drive internally cooled rolling mill with centering components is in use, multiple groups of direct-drive internally cooled rolling mills are usually fixed, which makes it inconvenient to adjust the spacing according to production needs, limiting the flexibility of the production line. When it is necessary to produce products of different specifications, the fixed rolling mill spacing may not be able to meet the new process requirements, resulting in a decrease in production efficiency. At the same time, most of the heat is dissipated through heat dissipation holes, and the heat dissipation efficiency is low. Poor heat dissipation will cause the internal temperature of the rolling mill to be too high, affecting the normal operation of the equipment and bringing certain adverse effects to people's use process. For this reason, we propose a segmented direct-drive internally cooled rolling mill with centering components. Summary of the invention

[0004] Technical problems to be solved: In view of the deficiencies of the prior art, the present invention provides a segmented direct-drive internally-cooled rolling mill with a centering component, which has the advantages of spacing adjustment and efficient heat dissipation. Through the spacing adjustment mechanism, the guide frame is sleeved on the outer wall of the guide rod through the movable hole, which can enhance the guiding stability. The N-type mobile control frame is engaged with the outer wall of the mobile control frame, and the control motor drives the rotating connecting rod to drive the gear to rotate. The gear and the rack are engaged with each other and can transmit to each other, so that the N-type mobile control frame moves at the upper end of the mobile control frame, thereby driving the direct-drive internally-cooled rolling mill at the upper end of the N-type mobile control frame to move and adjust, which can be flexibly adjusted according to the requirements of different materials and product specifications, thereby It can adapt to various production processes and improve the flexibility of the production line. Through the cooling and heat dissipation mechanism, the cooling air cooler can produce cold air, and the air outlet control pump can transmit the cold air to the inside of the air inlet through the connecting transmission pipe, and at the same time, it is evenly transmitted to the inside of the direct-drive internal cooling rolling mill through the uniform wind fan. The bracket at the lower end of the uniform wind fan can enhance the stability, and the dustproof net is positioned on the inner wall of the air inlet through the positioning external thread and the positioning internal thread, which can play a dustproof role. The good heat dissipation effect can keep the rolling mill running within the optimal operating temperature range, avoid the decrease in work efficiency due to excessive temperature, prevent the rolling mill from being damaged due to overheating, and extend the service life of the equipment, which can effectively solve the problems in the background technology.

[0005] Technical solution: To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a segmented direct-drive internally cold rolling mill with a centering component, comprising a control base, one side of the upper end of the control base is fixedly connected with a centering device body, the other side of the upper end of the control base is positioned and installed with a spacing adjustment mechanism, the upper end of the spacing adjustment mechanism is fixedly connected with the direct-drive internally cold rolling mill, the upper end of the direct-drive internally cold rolling mill is positioned and installed with a cooling and heat dissipation mechanism, and the spacing adjustment mechanism includes a guide movable groove, a guide rod, a movable control frame, a rack, a guide frame, a through movable hole, an N-type movable control frame, an inner movable groove, a control motor, a rotating connecting rod and a gear.

[0006] Preferably, the guide movable grooves are opened on both sides of the upper end of the control base, the guide rod is located on the inner side of the guide movable groove, the mobile control frame is located at the upper end of the control base, the rack is located at the upper end of the mobile control frame, the guide frames are located on both sides of the lower end of the direct-drive internal cold rolling mill, and the through movable holes are opened on the inner wall of the guide frame.

[0007] Preferably, the N-type mobile control frame is located in the middle of the lower end of the direct-drive internal cold rolling mill, the inner movable groove is opened on the inner wall of the lower end of the N-type mobile control frame, the control motor is located on one side of the N-type mobile control frame, the rotating connecting rod is located at one end of the control motor and located inside the N-type mobile control frame, and the gear is located on the outer wall of the rotating connecting rod and meshes with the rack.

[0008] Preferably, both ends of the guide rod are fixedly connected to the inner wall of the guide movable groove, the lower end of the movable control frame is fixed to the upper end of the control base by bolts, the lower end of the rack is fixedly connected to the upper end of the movable control frame, the upper ends of the guide frames are fixedly connected to both sides of the lower end of the direct-drive internal cold rolling mill, and the guide frame is mounted on the outer wall of the guide rod by penetrating the movable hole.

[0009] Preferably, the upper end of the N-type mobile control frame is fixedly connected to the middle part of the lower end of the direct-drive internal cold rolling mill, one end of the control motor is fixed to one side of the N-type mobile control frame by bolts, one end of the rotating connecting rod passes through the inner wall of the N-type mobile control frame and is connected to the control motor, and the inner wall of the gear is fixedly connected to the outer wall of the rotating connecting rod.

[0010] Preferably, the cooling and heat dissipation mechanism includes a cooling air blower, an air outlet control pump, a connecting transmission pipe, an air inlet hole, a positioning internal thread, a bracket, a uniform wind fan, a dustproof net and a positioning external thread. The cooling air blower is located on one side of the upper end of the direct-drive internally cooled rolling mill, and the air outlet control pump is located at the upper end of the cooling air blower.

[0011] Preferably, the air inlet is opened on one side of the upper end of the direct-drive internal cold rolling mill, the positioning internal thread is opened on the inner wall of the air inlet, the connecting transmission pipe is located between the air outlet control pump and the air inlet, the bracket is located at the lower end of the inner wall of the air inlet, the uniform air fan is located at the upper end of the bracket, the dustproof net is located at the upper end of the inner wall of the air inlet, and the positioning external thread is opened on the outer wall of the dustproof net.

[0012] Preferably, the lower end of the cooling air cooler is fixedly connected to the upper end of the control base, the lower end of the air outlet control pump is fixedly connected to the upper end of the cooling air cooler, the outer wall of the bracket is fixedly connected to the inner wall of the air inlet hole, and the lower end of the uniform air fan is fixedly connected to the upper end of the bracket.

[0013] Preferably, the dustproof net is positioned on the inner wall of the air inlet hole by means of a positioning external thread and a positioning internal thread, one end of the connecting transmission pipe is fixedly connected to the upper end of the air outlet control pump, and the other end of the connecting transmission pipe is fixedly connected to the upper end of the air inlet hole.

[0014] Beneficial effects: Compared with the prior art, the present invention provides a segmented direct-drive internally-cooled rolling mill with a centering component, which has the following beneficial effects:

[0015] 1. A segmented direct-driven internally cold rolling mill with a centering component has a spacing adjustment mechanism, and the guide frame is sleeved on the outer wall of the guide rod through a movable hole, so that the guiding stability can be enhanced. The N-type mobile control frame is engaged with the outer wall of the mobile control frame, and the control motor drives the rotating connecting rod to drive the gear to rotate. The gear and the rack are engaged with each other and can transmit to each other, so that the N-type mobile control frame moves on the upper end of the mobile control frame, thereby driving the direct-driven internally cold rolling mill on the upper end of the N-type mobile control frame to move and adjust, and can be flexibly adjusted according to the requirements of different materials and product specifications, so as to adapt to a variety of production processes, improve the flexibility of the production line, and facilitate the adjustment of the spacing between each group of direct-driven internally cold rolling mills.

[0016] 2. This is a segmented direct-drive internally cooled rolling mill with a centering component. Through the cooling and heat dissipation mechanism, the cooling air blower can produce cold air, and the air outlet control pump can transmit the cold air to the inside of the air inlet through the connecting transmission pipe, and at the same time, it is evenly transmitted to the inside of the direct-drive internally cooled rolling mill through the uniform wind fan. The bracket at the lower end of the uniform wind fan can enhance stability, and the dustproof net is positioned on the inner wall of the air inlet through the positioning external thread and the positioning internal thread, which can play a dustproof role. The good heat dissipation effect can keep the rolling mill running within the optimal operating temperature range, avoid the decrease in work efficiency due to excessive temperature, prevent the rolling mill from being damaged due to overheating, and extend the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1The present invention is a schematic diagram of the overall structure of a segmented direct-drive internally-cooled rolling mill with a centering component.

[0018] Figure 2 The present invention is a partial structural schematic diagram of a control base and a spacing adjustment mechanism in a segmented direct-drive internally-cooled rolling mill with a centering component.

[0019] Figure 3 It is a partial structural schematic diagram of a direct-driven internally-cooled rolling mill, a spacing adjustment mechanism and a cooling and heat dissipation mechanism in a segmented direct-driven internally-cooled rolling mill with a centering component according to the present invention.

[0020] Figure 4 It is a partial structural plan view of a center distance adjustment mechanism of a segmented direct-driven internally-cooled rolling mill with a centering component according to the present invention.

[0021] Figure 5 The present invention is a partial structural schematic diagram of a center spacing adjustment mechanism and a cooling and heat dissipation mechanism of a segmented direct-drive internally-cooled rolling mill with a centering component.

[0022] Figure 6 The present invention is a schematic diagram of partial structural decomposition of a cooling and heat dissipation mechanism in a segmented direct-drive internally-cooled rolling mill with a centering component.

[0023] Figure 7 The present invention is a schematic diagram of the partial structural breakdown of a cooling and heat dissipation mechanism in a segmented direct-drive internally-cooled rolling mill with a centering component.

[0024] In the figure: 1. control base; 2. direct-drive internally cooled rolling mill; 3. spacing adjustment mechanism; 4. centering device body; 5. cooling and heat dissipation mechanism; 301. guide movable groove; 302. guide rod; 303. mobile control frame; 304. rack; 305. guide frame; 306. through movable hole; 307. N-type mobile control frame; 308. inner movable groove; 309. control motor; 310. rotating connecting rod; 311. gear; 501. cooling air blower; 502. air outlet control pump; 503. connecting transmission pipe; 504. air inlet hole; 505. positioning internal thread; 506. bracket; 507. uniform air fan; 508. dust net; 509. positioning external thread. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0026] like Figure 1-7As shown, a segmented direct-driven internally-cooled rolling mill with a centering assembly comprises a control base 1, one side of the upper end of the control base 1 is fixedly connected with a centering device body 4, the other side of the upper end of the control base 1 is positioned and installed with a spacing adjustment mechanism 3, the upper end of the spacing adjustment mechanism 3 is fixedly connected with a direct-driven internally-cooled rolling mill 2, the upper end of the direct-driven internally-cooled rolling mill 2 is positioned and installed with a cooling and heat dissipation mechanism 5, and the spacing adjustment mechanism 3 comprises a guide movable groove 301, a guide rod 302, a movable control frame 303, a rack 304, a guide frame 305, a through movable hole 306, an N-type movable control frame 307, an inner movable groove 308, a control motor 309, and a rotating connecting rod 301. 10 and the gear 311 can be flexibly adjusted according to the requirements of different materials and product specifications, so as to adapt to various production processes, improve the flexibility of the production line, and facilitate the adjustment of the spacing between each group of direct-driven internal cold rolling mills 2. The guide frame 305 is sleeved on the outer wall of the guide rod 302 through the movable hole 306 to enhance the guiding stability. The N-type mobile control frame 307 is engaged with the outer wall of the mobile control frame 303. The control motor 309 drives the rotating connecting rod 310 to drive the gear 311 to rotate. The gear 311 and the rack 304 are engaged with each other and can transmit to each other, so that the N-type mobile control frame 307 moves on the upper end of the mobile control frame 303.

[0027] Furthermore, the guide movable grooves 301 are opened on both sides of the upper end of the control base 1, the guide rod 302 is located on the inner side of the guide movable groove 301, the movable control frame 303 is located at the upper end of the control base 1, the rack 304 is located at the upper end of the movable control frame 303, and the guide frames 305 are located on both sides of the lower end of the direct-driven internal cold rolling mill 2. The through movable hole 306 is opened on the inner wall of the guide frame 305, and the through movable hole 306 and the guide rod 302 are adapted to each other. The guide frame 305 is sleeved on the outer wall of the guide rod 302 through the through movable hole 306, and is located on the inner side of the guide movable groove 301 for movement, which is convenient for adjusting the moving guide of the direct-driven internal cold rolling mill 2.

[0028] Furthermore, the N-type mobile control frame 307 is located in the middle of the lower end of the direct-driven internal cold rolling mill 2, the inner movable groove 308 is opened on the inner wall of the lower end of the N-type mobile control frame 307, the control motor 309 is located on one side of the N-type mobile control frame 307, the rotating connecting rod 310 is located at one end of the control motor 309 and is located inside the N-type mobile control frame 307, the gear 311 is located on the outer wall of the rotating connecting rod 310 and is engaged with the rack 304. When the control motor 309 drives the rotating connecting rod 310 to drive the gear 311 to rotate, the N-type mobile control frame 307 is moved at the upper end of the mobile control frame 303 through the rack 304 and the gear 311, thereby controlling the spacing adjustment between each group of direct-driven internal cold rolling mills 2.

[0029] Furthermore, both ends of the guide rod 302 are fixedly connected to the inner wall of the guide movable groove 301, the lower end of the movable control frame 303 is fixed to the upper end of the control base 1 by bolts, the lower end of the rack 304 is fixedly connected to the upper end of the movable control frame 303, and the upper ends of the guide frame 305 are fixedly connected to both sides of the lower end of the direct-drive internal cold rolling mill 2. The guide frame 305 is sleeved on the outer wall of the guide rod 302 by passing through the movable hole 306, which can enhance the guiding stability.

[0030] Furthermore, the upper end of the N-type mobile control frame 307 is fixedly connected to the middle part of the lower end of the direct-drive internal cold rolling mill 2, one end of the control motor 309 is fixed to one side of the N-type mobile control frame 307 by bolts, one end of the rotating connecting rod 310 passes through the inner wall of the N-type mobile control frame 307 and is connected to the control motor 309, the inner wall of the gear 311 is fixedly connected to the outer wall of the rotating connecting rod 310 to enhance the firmness, the control motor 309 drives the rotating connecting rod 310 to drive the gear 311 to rotate, the gear 311 and the rack 304 are engaged with each other and can transmit to each other, so that the N-type mobile control frame 307 moves at the upper end of the mobile control frame 303, thereby driving the direct-drive internal cold rolling mill 2 at the upper end of the N-type mobile control frame 307 to move and adjust, and can be flexibly adjusted according to the requirements of different materials and product specifications, thereby adapting to a variety of production processes and improving the flexibility of the production line.

[0031] Furthermore, the cooling and heat dissipation mechanism 5 includes a cooling air blower 501, an air outlet control pump 502, a connecting transmission pipe 503, an air inlet hole 504, a positioning internal thread 505, a bracket 506, a uniform wind fan 507, a dust screen 508 and a positioning external thread 509. The cooling air blower 501 is located on one side of the upper end of the direct-drive internal cooling rolling mill 2, and the air outlet control pump 502 is located at the upper end of the cooling air blower 501. The cold air generated by the cooling air blower 501 can be blown to the inner side of the air inlet hole 504 through the connecting transmission pipe 503. The uniform wind fan 507 evenly transmits the cold air to the inner side of the direct-drive internal cooling rolling mill 2 to cool the internal components of the direct-drive internal cooling rolling mill 2, thereby avoiding a decrease in work efficiency due to excessive temperature and preventing damage to components of the rolling mill due to overheating.

[0032] Furthermore, the air inlet 504 is opened on one side of the upper end of the direct-drive internal cold rolling mill 2, the positioning internal thread 505 is opened on the inner wall of the air inlet 504, the connecting transmission pipe 503 is located between the air outlet control pump 502 and the air inlet 504, the bracket 506 is located at the lower end of the inner wall of the air inlet 504, the uniform wind fan 507 is located at the upper end of the bracket 506, the dustproof net 508 is located at the upper end of the inner wall of the air inlet 504, the positioning external thread 509 is opened on the outer wall of the dustproof net 508, and the positioning external thread 509 and the positioning internal thread 505 are adapted to each other, thereby controlling the dustproof net 508 to be positioned on the inner side of the air inlet 504 for fixing and isolating impurities and dust.

[0033] Furthermore, the lower end of the cooling air cooler 501 is fixedly connected to the upper end of the control base 1, the lower end of the air outlet control pump 502 is fixedly connected to the upper end of the cooling air cooler 501, the outer wall of the bracket 506 is fixedly connected to the inner wall of the air inlet 504, and the lower end of the uniform wind fan 507 is fixedly connected to the upper end of the bracket 506 to enhance the firmness. The uniform wind fan 507 is driven to rotate by the micro motor at the lower end of the bracket 506, so that the cooling inside the cooling air cooler 501 is evenly blown into the interior of the direct-drive internal cooling rolling mill 2.

[0034] Furthermore, the dustproof net 508 is positioned on the inner wall of the air inlet hole 504 by positioning the external thread 509 and the internal thread 505, and one end of the connecting transmission pipe 503 is fixedly connected to the upper end of the air outlet control pump 502, and the other end of the connecting transmission pipe 503 is fixedly connected to the upper end of the air inlet hole 504. The connecting transmission pipe 503 plays the role of connecting and transmitting the cold air generated by the cooling air cooler 501 to the interior of the direct-drive internal cooling rolling mill 2 through the connecting transmission pipe 503. The good heat dissipation effect can keep the rolling mill running within the optimal operating temperature range, avoid the decrease in work efficiency due to excessively high temperature, prevent the rolling mill from being damaged due to overheating, and extend the service life of the equipment.

[0035] Working principle: A segmented direct-driven internally-cooled rolling mill with a centering assembly comprises a control base 1, a direct-driven internally-cooled rolling mill 2, a spacing adjustment mechanism 3, a centering device body 4 and a cooling and heat dissipation mechanism 5. The material can be placed on the upper end of the centering device body 4, and the material is transferred to the inner side of the direct-driven internally-cooled rolling mill 2 through the conveying structure at the upper end of the centering device body 4. The centering device body 4 can drive the inner movable plate to move through the cylinder to perform the centering operation on the material. After the material is transferred to the inner side of the direct-driven internally-cooled rolling mill 2, The inner roller is used for processing, and the spacing between each group of direct-driven internal cold rolling mills 2 is adjusted by the spacing adjustment mechanism 3. The guide frame 305 is sleeved on the outer wall of the guide rod 302 through the movable hole 306 to enhance the guiding stability. The N-type mobile control frame 307 is engaged with the outer wall of the mobile control frame 303. The control motor 309 drives the rotating connecting rod 310 to drive the gear 311 to rotate. The gear 311 and the rack 304 are engaged with each other and can transmit to each other, so that the N-type mobile control frame 307 can be moved in a certain direction. The upper end of the mobile control frame 303 moves, thereby driving the direct-drive internal cooling rolling mill 2 at the upper end of the N-type mobile control frame 307 to move and adjust, and can be flexibly adjusted according to the requirements of different materials and product specifications, so as to adapt to various production processes and improve the flexibility of the production line. Through the cooling and heat dissipation mechanism 5, the cooling air cooler 501 can produce cold air, and the air outlet control pump 502 can transmit the cold air to the inner side of the air inlet hole 504 through the connection transmission pipe 503, and the micro motor at the lower end of the bracket 506 drives the uniform air fan 5 07 rotates, the uniform air fan 507 evenly transmits the cold air to the inner side of the direct-drive internal cooling rolling mill 2, the bracket 506 at the lower end of the uniform air fan 507 can enhance the stability, the dustproof net 508 is positioned on the inner wall of the air inlet hole 504 by positioning the external thread 509 and the internal thread 505, which can play a role in dust prevention. The good heat dissipation effect can keep the rolling mill running within the optimal operating temperature range, avoid the decrease in work efficiency due to excessive temperature, prevent the rolling mill from being damaged due to overheating, and extend the service life of the equipment.

[0036] It should be noted that, in this article, relational terms such as first and second (number one, number two), etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0037] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A segmented direct-drive internally cooled rolling mill with a centering assembly, comprising a control base (1), characterized in that: A centering device body (4) is fixedly connected to one side of the upper end of the control base (1), a spacing adjustment mechanism (3) is positioned and installed on the other side of the upper end of the control base (1), a direct-driven internally cold rolling mill (2) is fixedly connected to the upper end of the spacing adjustment mechanism (3), a cooling and heat dissipation mechanism (5) is positioned and installed on the upper end of the direct-driven internally cold rolling mill (2), and the spacing adjustment mechanism (3) comprises a guide movable groove (301), a guide rod (302), a movable control frame (303), a rack (304), a guide frame (305), a through movable hole (306), an N-type movable control frame (307), an inner movable groove (308), a control motor (309), a rotating connecting rod (310) and a gear (311).

2. A sectional direct-drive internally-cooled rolling mill with a centering assembly according to claim 1, characterized in that: The guide movable grooves (301) are both provided on both sides of the upper end of the control base (1); the guide rods (302) are located on the inner side of the guide movable grooves (301); the movable control frame (303) is located on the upper end of the control base (1); the rack (304) is located on the upper end of the movable control frame (303); the guide frames (305) are both provided on both sides of the lower end of the direct-drive internal cold rolling mill (2); and the through movable holes (306) are provided on the inner wall of the guide frame (305).

3. A sectional direct-drive internally-cooled rolling mill with a centering assembly according to claim 2, characterized in that: The N-type mobile control frame (307) is located in the middle of the lower end of the direct-drive internal cold rolling mill (2); the inner movable groove (308) is opened on the inner wall of the lower end of the N-type mobile control frame (307); the control motor (309) is located on one side of the N-type mobile control frame (307); the rotating connecting rod (310) is located at one end of the control motor (309) and is located inside the N-type mobile control frame (307); the gear (311) is located on the outer wall of the rotating connecting rod (310) and is engaged with the rack (304).

4. A sectional direct-drive internally-cooled rolling mill with a centering assembly according to claim 3, characterized in that: Both ends of the guide rod (302) are fixedly connected to the inner wall of the guide movable groove (301), the lower end of the movable control frame (303) is fixed to the upper end of the control base (1) by bolts, the lower end of the rack (304) is fixedly connected to the upper end of the movable control frame (303), the upper ends of the guide frame (305) are fixedly connected to both sides of the lower end of the direct-drive internal cold rolling mill (2), and the guide frame (305) is sleeved on the outer wall of the guide rod (302) by penetrating the movable hole (306).

5. A sectional direct-drive internally-cooled rolling mill with a centering assembly according to claim 4, characterized in that: The upper end of the N-type mobile control frame (307) is fixedly connected to the middle of the lower end of the direct-drive internal cold rolling mill (2), one end of the control motor (309) is fixed to one side of the N-type mobile control frame (307) by bolts, one end of the rotating connecting rod (310) passes through the inner wall of the N-type mobile control frame (307) and is connected to the control motor (309), and the inner wall of the gear (311) is fixedly connected to the outer wall of the rotating connecting rod (310).

6. A sectional direct-drive internally-cooled rolling mill with a centering assembly according to claim 5, characterized in that: The cooling and heat dissipation mechanism (5) comprises a cooling air cooler (501), an air outlet control pump (502), a connecting transmission pipe (503), an air inlet hole (504), a positioning internal thread (505), a bracket (506), an air uniforming fan (507), a dustproof net (508) and a positioning external thread (509); the cooling air cooler (501) is located on one side of the upper end of the direct-drive internal cooling rolling mill (2); and the air outlet control pump (502) is located at the upper end of the cooling air cooler (501).

7. A sectional direct-drive internally-cooled rolling mill with a centering assembly according to claim 6, characterized in that: The air inlet (504) is provided on one side of the upper end of the direct-drive internal cold rolling mill (2); the positioning internal thread (505) is provided on the inner wall of the air inlet (504); the connecting transmission pipe (503) is located between the air outlet control pump (502) and the air inlet (504); the bracket (506) is located at the lower end of the inner wall of the air inlet (504); the uniform air fan (507) is located at the upper end of the bracket (506); the dustproof net (508) is located at the upper end of the inner wall of the air inlet (504); and the positioning external thread (509) is provided on the outer wall of the dustproof net (508).

8. A sectional direct-drive internally-cooled rolling mill with a centering assembly according to claim 7, characterized in that: The lower end of the cooling air cooler (501) is fixedly connected to the upper end of the control base (1), the lower end of the air outlet control pump (502) is fixedly connected to the upper end of the cooling air cooler (501), the outer wall of the bracket (506) is fixedly connected to the inner wall of the air inlet hole (504), and the lower end of the uniform air fan (507) is fixedly connected to the upper end of the bracket (506).

9. A sectional direct-drive internally-cooled rolling mill with a centering assembly according to claim 8, characterized in that: The dustproof net (508) is positioned on the inner wall of the air inlet hole (504) by means of a positioning external thread (509) and a positioning internal thread (505); one end of the connecting transmission pipe (503) is fixedly connected to the upper end of the air outlet control pump (502); and the other end of the connecting transmission pipe (503) is fixedly connected to the upper end of the air inlet hole (504).

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